drivers/net/ethernet/rocker/rocker_main.c

   1 /*
   2  * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
   3  * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com>
   4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/sched.h>
  17 #include <linux/wait.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/hashtable.h>
  20 #include <linux/crc32.h>
  21 #include <linux/sort.h>
  22 #include <linux/random.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/socket.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/if_vlan.h>
  31 #include <linux/if_bridge.h>
  32 #include <linux/bitops.h>
  33 #include <linux/ctype.h>
  34 #include <net/switchdev.h>
  35 #include <net/rtnetlink.h>
  36 #include <net/ip_fib.h>
  37 #include <net/netevent.h>
  38 #include <net/arp.h>
  39 #include <linux/io-64-nonatomic-lo-hi.h>
  40 #include <generated/utsrelease.h>
  41
  42 #include "rocker_hw.h"
  43 #include "rocker.h"
  44 #include "rocker_tlv.h"
  45
  46 static const char rocker_driver_name[] = "rocker";
  47
  48 static const struct pci_device_id rocker_pci_id_table[] = {
  49         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  50         {0, }
  51 };
  52
  53 struct rocker_flow_tbl_key {
  54         u32 priority;
  55         enum rocker_of_dpa_table_id tbl_id;
  56         union {
  57                 struct {
  58                         u32 in_pport;
  59                         u32 in_pport_mask;
  60                         enum rocker_of_dpa_table_id goto_tbl;
  61                 } ig_port;
  62                 struct {
  63                         u32 in_pport;
  64                         __be16 vlan_id;
  65                         __be16 vlan_id_mask;
  66                         enum rocker_of_dpa_table_id goto_tbl;
  67                         bool untagged;
  68                         __be16 new_vlan_id;
  69                 } vlan;
  70                 struct {
  71                         u32 in_pport;
  72                         u32 in_pport_mask;
  73                         __be16 eth_type;
  74                         u8 eth_dst[ETH_ALEN];
  75                         u8 eth_dst_mask[ETH_ALEN];
  76                         __be16 vlan_id;
  77                         __be16 vlan_id_mask;
  78                         enum rocker_of_dpa_table_id goto_tbl;
  79                         bool copy_to_cpu;
  80                 } term_mac;
  81                 struct {
  82                         __be16 eth_type;
  83                         __be32 dst4;
  84                         __be32 dst4_mask;
  85                         enum rocker_of_dpa_table_id goto_tbl;
  86                         u32 group_id;
  87                 } ucast_routing;
  88                 struct {
  89                         u8 eth_dst[ETH_ALEN];
  90                         u8 eth_dst_mask[ETH_ALEN];
  91                         int has_eth_dst;
  92                         int has_eth_dst_mask;
  93                         __be16 vlan_id;
  94                         u32 tunnel_id;
  95                         enum rocker_of_dpa_table_id goto_tbl;
  96                         u32 group_id;
  97                         bool copy_to_cpu;
  98                 } bridge;
  99                 struct {
 100                         u32 in_pport;
 101                         u32 in_pport_mask;
 102                         u8 eth_src[ETH_ALEN];
 103                         u8 eth_src_mask[ETH_ALEN];
 104                         u8 eth_dst[ETH_ALEN];
 105                         u8 eth_dst_mask[ETH_ALEN];
 106                         __be16 eth_type;
 107                         __be16 vlan_id;
 108                         __be16 vlan_id_mask;
 109                         u8 ip_proto;
 110                         u8 ip_proto_mask;
 111                         u8 ip_tos;
 112                         u8 ip_tos_mask;
 113                         u32 group_id;
 114                 } acl;
 115         };
 116 };
 117
 118 struct rocker_flow_tbl_entry {
 119         struct hlist_node entry;
 120         u32 cmd;
 121         u64 cookie;
 122         struct rocker_flow_tbl_key key;
 123         size_t key_len;
 124         u32 key_crc32; /* key */
 125 };
 126
 127 struct rocker_group_tbl_entry {
 128         struct hlist_node entry;
 129         u32 cmd;
 130         u32 group_id; /* key */
 131         u16 group_count;
 132         u32 *group_ids;
 133         union {
 134                 struct {
 135                         u8 pop_vlan;
 136                 } l2_interface;
 137                 struct {
 138                         u8 eth_src[ETH_ALEN];
 139                         u8 eth_dst[ETH_ALEN];
 140                         __be16 vlan_id;
 141                         u32 group_id;
 142                 } l2_rewrite;
 143                 struct {
 144                         u8 eth_src[ETH_ALEN];
 145                         u8 eth_dst[ETH_ALEN];
 146                         __be16 vlan_id;
 147                         bool ttl_check;
 148                         u32 group_id;
 149                 } l3_unicast;
 150         };
 151 };
 152
 153 struct rocker_fdb_tbl_entry {
 154         struct hlist_node entry;
 155         u32 key_crc32; /* key */
 156         bool learned;
 157         unsigned long touched;
 158         struct rocker_fdb_tbl_key {
 159                 struct rocker_port *rocker_port;
 160                 u8 addr[ETH_ALEN];
 161                 __be16 vlan_id;
 162         } key;
 163 };
 164
 165 struct rocker_internal_vlan_tbl_entry {
 166         struct hlist_node entry;
 167         int ifindex; /* key */
 168         u32 ref_count;
 169         __be16 vlan_id;
 170 };
 171
 172 struct rocker_neigh_tbl_entry {
 173         struct hlist_node entry;
 174         __be32 ip_addr; /* key */
 175         struct net_device *dev;
 176         u32 ref_count;
 177         u32 index;
 178         u8 eth_dst[ETH_ALEN];
 179         bool ttl_check;
 180 };
 181
 182 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 183 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 184 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 185 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 186 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 187 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 188 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 189 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 190 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 191
 192 /* Rocker priority levels for flow table entries.  Higher
 193  * priority match takes precedence over lower priority match.
 194  */
 195
 196 enum {
 197         ROCKER_PRIORITY_UNKNOWN = 0,
 198         ROCKER_PRIORITY_IG_PORT = 1,
 199         ROCKER_PRIORITY_VLAN = 1,
 200         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 201         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 202         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 203         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 204         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 205         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 206         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 207         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 208         ROCKER_PRIORITY_ACL_CTRL = 3,
 209         ROCKER_PRIORITY_ACL_NORMAL = 2,
 210         ROCKER_PRIORITY_ACL_DFLT = 1,
 211 };
 212
 213 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 214 {
 215         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 216         u16 end = 0xffe;
 217         u16 _vlan_id = ntohs(vlan_id);
 218
 219         return (_vlan_id >= start && _vlan_id <= end);
 220 }
 221
 222 static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port,
 223                                       u16 vid, bool *pop_vlan)
 224 {
 225         __be16 vlan_id;
 226
 227         if (pop_vlan)
 228                 *pop_vlan = false;
 229         vlan_id = htons(vid);
 230         if (!vlan_id) {
 231                 vlan_id = rocker_port->internal_vlan_id;
 232                 if (pop_vlan)
 233                         *pop_vlan = true;
 234         }
 235
 236         return vlan_id;
 237 }
 238
 239 static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port,
 240                                    __be16 vlan_id)
 241 {
 242         if (rocker_vlan_id_is_internal(vlan_id))
 243                 return 0;
 244
 245         return ntohs(vlan_id);
 246 }
 247
 248 static bool rocker_port_is_bridged(const struct rocker_port *rocker_port)
 249 {
 250         return rocker_port->bridge_dev &&
 251                netif_is_bridge_master(rocker_port->bridge_dev);
 252 }
 253
 254 static bool rocker_port_is_ovsed(const struct rocker_port *rocker_port)
 255 {
 256         return rocker_port->bridge_dev &&
 257                netif_is_ovs_master(rocker_port->bridge_dev);
 258 }
 259
 260 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
 261 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
 262 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
 263 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
 264
 265 static void *__rocker_mem_alloc(struct switchdev_trans *trans, int flags,
 266                                 size_t size)
 267 {
 268         struct switchdev_trans_item *elem = NULL;
 269         gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ?
 270                           GFP_ATOMIC : GFP_KERNEL;
 271
 272         /* If in transaction prepare phase, allocate the memory
 273          * and enqueue it on a transaction.  If in transaction
 274          * commit phase, dequeue the memory from the transaction
 275          * rather than re-allocating the memory.  The idea is the
 276          * driver code paths for prepare and commit are identical
 277          * so the memory allocated in the prepare phase is the
 278          * memory used in the commit phase.
 279          */
 280
 281         if (!trans) {
 282                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 283         } else if (switchdev_trans_ph_prepare(trans)) {
 284                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 285                 if (!elem)
 286                         return NULL;
 287                 switchdev_trans_item_enqueue(trans, elem, kfree, elem);
 288         } else {
 289                 elem = switchdev_trans_item_dequeue(trans);
 290         }
 291
 292         return elem ? elem + 1 : NULL;
 293 }
 294
 295 static void *rocker_kzalloc(struct switchdev_trans *trans, int flags,
 296                             size_t size)
 297 {
 298         return __rocker_mem_alloc(trans, flags, size);
 299 }
 300
 301 static void *rocker_kcalloc(struct switchdev_trans *trans, int flags,
 302                             size_t n, size_t size)
 303 {
 304         return __rocker_mem_alloc(trans, flags, n * size);
 305 }
 306
 307 static void rocker_kfree(struct switchdev_trans *trans, const void *mem)
 308 {
 309         struct switchdev_trans_item *elem;
 310
 311         /* Frees are ignored if in transaction prepare phase.  The
 312          * memory remains on the per-port list until freed in the
 313          * commit phase.
 314          */
 315
 316         if (switchdev_trans_ph_prepare(trans))
 317                 return;
 318
 319         elem = (struct switchdev_trans_item *) mem - 1;
 320         kfree(elem);
 321 }
 322
 323 struct rocker_wait {
 324         wait_queue_head_t wait;
 325         bool done;
 326         bool nowait;
 327 };
 328
 329 static void rocker_wait_reset(struct rocker_wait *wait)
 330 {
 331         wait->done = false;
 332         wait->nowait = false;
 333 }
 334
 335 static void rocker_wait_init(struct rocker_wait *wait)
 336 {
 337         init_waitqueue_head(&wait->wait);
 338         rocker_wait_reset(wait);
 339 }
 340
 341 static struct rocker_wait *rocker_wait_create(void)
 342 {
 343         struct rocker_wait *wait;
 344
 345         wait = kzalloc(sizeof(*wait), GFP_KERNEL);
 346         if (!wait)
 347                 return NULL;
 348         return wait;
 349 }
 350
 351 static void rocker_wait_destroy(struct rocker_wait *wait)
 352 {
 353         kfree(wait);
 354 }
 355
 356 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 357                                       unsigned long timeout)
 358 {
 359         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 360         if (!wait->done)
 361                 return false;
 362         return true;
 363 }
 364
 365 static void rocker_wait_wake_up(struct rocker_wait *wait)
 366 {
 367         wait->done = true;
 368         wake_up(&wait->wait);
 369 }
 370
 371 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
 372 {
 373         return rocker->msix_entries[vector].vector;
 374 }
 375
 376 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
 377 {
 378         return rocker_msix_vector(rocker_port->rocker,
 379                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 380 }
 381
 382 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
 383 {
 384         return rocker_msix_vector(rocker_port->rocker,
 385                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 386 }
 387
 388 #define rocker_write32(rocker, reg, val)        \
 389         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 390 #define rocker_read32(rocker, reg)      \
 391         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 392 #define rocker_write64(rocker, reg, val)        \
 393         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 394 #define rocker_read64(rocker, reg)      \
 395         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 396
 397 /*****************************
 398  * HW basic testing functions
 399  *****************************/
 400
 401 static int rocker_reg_test(const struct rocker *rocker)
 402 {
 403         const struct pci_dev *pdev = rocker->pdev;
 404         u64 test_reg;
 405         u64 rnd;
 406
 407         rnd = prandom_u32();
 408         rnd >>= 1;
 409         rocker_write32(rocker, TEST_REG, rnd);
 410         test_reg = rocker_read32(rocker, TEST_REG);
 411         if (test_reg != rnd * 2) {
 412                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 413                         test_reg, rnd * 2);
 414                 return -EIO;
 415         }
 416
 417         rnd = prandom_u32();
 418         rnd <<= 31;
 419         rnd |= prandom_u32();
 420         rocker_write64(rocker, TEST_REG64, rnd);
 421         test_reg = rocker_read64(rocker, TEST_REG64);
 422         if (test_reg != rnd * 2) {
 423                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 424                         test_reg, rnd * 2);
 425                 return -EIO;
 426         }
 427
 428         return 0;
 429 }
 430
 431 static int rocker_dma_test_one(const struct rocker *rocker,
 432                                struct rocker_wait *wait, u32 test_type,
 433                                dma_addr_t dma_handle, const unsigned char *buf,
 434                                const unsigned char *expect, size_t size)
 435 {
 436         const struct pci_dev *pdev = rocker->pdev;
 437         int i;
 438
 439         rocker_wait_reset(wait);
 440         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 441
 442         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 443                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 444                 return -EIO;
 445         }
 446
 447         for (i = 0; i < size; i++) {
 448                 if (buf[i] != expect[i]) {
 449                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 450                                 buf[i], i, expect[i]);
 451                         return -EIO;
 452                 }
 453         }
 454         return 0;
 455 }
 456
 457 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 458 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 459
 460 static int rocker_dma_test_offset(const struct rocker *rocker,
 461                                   struct rocker_wait *wait, int offset)
 462 {
 463         struct pci_dev *pdev = rocker->pdev;
 464         unsigned char *alloc;
 465         unsigned char *buf;
 466         unsigned char *expect;
 467         dma_addr_t dma_handle;
 468         int i;
 469         int err;
 470
 471         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 472                         GFP_KERNEL | GFP_DMA);
 473         if (!alloc)
 474                 return -ENOMEM;
 475         buf = alloc + offset;
 476         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 477
 478         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 479                                     PCI_DMA_BIDIRECTIONAL);
 480         if (pci_dma_mapping_error(pdev, dma_handle)) {
 481                 err = -EIO;
 482                 goto free_alloc;
 483         }
 484
 485         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 486         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 487
 488         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 489         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 490                                   dma_handle, buf, expect,
 491                                   ROCKER_TEST_DMA_BUF_SIZE);
 492         if (err)
 493                 goto unmap;
 494
 495         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 496         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 497                                   dma_handle, buf, expect,
 498                                   ROCKER_TEST_DMA_BUF_SIZE);
 499         if (err)
 500                 goto unmap;
 501
 502         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 503         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 504                 expect[i] = ~buf[i];
 505         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 506                                   dma_handle, buf, expect,
 507                                   ROCKER_TEST_DMA_BUF_SIZE);
 508         if (err)
 509                 goto unmap;
 510
 511 unmap:
 512         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 513                          PCI_DMA_BIDIRECTIONAL);
 514 free_alloc:
 515         kfree(alloc);
 516
 517         return err;
 518 }
 519
 520 static int rocker_dma_test(const struct rocker *rocker,
 521                            struct rocker_wait *wait)
 522 {
 523         int i;
 524         int err;
 525
 526         for (i = 0; i < 8; i++) {
 527                 err = rocker_dma_test_offset(rocker, wait, i);
 528                 if (err)
 529                         return err;
 530         }
 531         return 0;
 532 }
 533
 534 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 535 {
 536         struct rocker_wait *wait = dev_id;
 537
 538         rocker_wait_wake_up(wait);
 539
 540         return IRQ_HANDLED;
 541 }
 542
 543 static int rocker_basic_hw_test(const struct rocker *rocker)
 544 {
 545         const struct pci_dev *pdev = rocker->pdev;
 546         struct rocker_wait wait;
 547         int err;
 548
 549         err = rocker_reg_test(rocker);
 550         if (err) {
 551                 dev_err(&pdev->dev, "reg test failed\n");
 552                 return err;
 553         }
 554
 555         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 556                           rocker_test_irq_handler, 0,
 557                           rocker_driver_name, &wait);
 558         if (err) {
 559                 dev_err(&pdev->dev, "cannot assign test irq\n");
 560                 return err;
 561         }
 562
 563         rocker_wait_init(&wait);
 564         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 565
 566         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 567                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 568                 err = -EIO;
 569                 goto free_irq;
 570         }
 571
 572         err = rocker_dma_test(rocker, &wait);
 573         if (err)
 574                 dev_err(&pdev->dev, "dma test failed\n");
 575
 576 free_irq:
 577         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 578         return err;
 579 }
 580
 581 /******************************************
 582  * DMA rings and descriptors manipulations
 583  ******************************************/
 584
 585 static u32 __pos_inc(u32 pos, size_t limit)
 586 {
 587         return ++pos == limit ? 0 : pos;
 588 }
 589
 590 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
 591 {
 592         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 593
 594         switch (err) {
 595         case ROCKER_OK:
 596                 return 0;
 597         case -ROCKER_ENOENT:
 598                 return -ENOENT;
 599         case -ROCKER_ENXIO:
 600                 return -ENXIO;
 601         case -ROCKER_ENOMEM:
 602                 return -ENOMEM;
 603         case -ROCKER_EEXIST:
 604                 return -EEXIST;
 605         case -ROCKER_EINVAL:
 606                 return -EINVAL;
 607         case -ROCKER_EMSGSIZE:
 608                 return -EMSGSIZE;
 609         case -ROCKER_ENOTSUP:
 610                 return -EOPNOTSUPP;
 611         case -ROCKER_ENOBUFS:
 612                 return -ENOBUFS;
 613         }
 614
 615         return -EINVAL;
 616 }
 617
 618 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
 619 {
 620         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 621 }
 622
 623 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
 624 {
 625         u32 comp_err = desc_info->desc->comp_err;
 626
 627         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 628 }
 629
 630 static void *
 631 rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
 632 {
 633         return (void *)(uintptr_t)desc_info->desc->cookie;
 634 }
 635
 636 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
 637                                        void *ptr)
 638 {
 639         desc_info->desc->cookie = (uintptr_t) ptr;
 640 }
 641
 642 static struct rocker_desc_info *
 643 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
 644 {
 645         static struct rocker_desc_info *desc_info;
 646         u32 head = __pos_inc(info->head, info->size);
 647
 648         desc_info = &info->desc_info[info->head];
 649         if (head == info->tail)
 650                 return NULL; /* ring full */
 651         desc_info->tlv_size = 0;
 652         return desc_info;
 653 }
 654
 655 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
 656 {
 657         desc_info->desc->buf_size = desc_info->data_size;
 658         desc_info->desc->tlv_size = desc_info->tlv_size;
 659 }
 660
 661 static void rocker_desc_head_set(const struct rocker *rocker,
 662                                  struct rocker_dma_ring_info *info,
 663                                  const struct rocker_desc_info *desc_info)
 664 {
 665         u32 head = __pos_inc(info->head, info->size);
 666
 667         BUG_ON(head == info->tail);
 668         rocker_desc_commit(desc_info);
 669         info->head = head;
 670         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 671 }
 672
 673 static struct rocker_desc_info *
 674 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 675 {
 676         static struct rocker_desc_info *desc_info;
 677
 678         if (info->tail == info->head)
 679                 return NULL; /* nothing to be done between head and tail */
 680         desc_info = &info->desc_info[info->tail];
 681         if (!rocker_desc_gen(desc_info))
 682                 return NULL; /* gen bit not set, desc is not ready yet */
 683         info->tail = __pos_inc(info->tail, info->size);
 684         desc_info->tlv_size = desc_info->desc->tlv_size;
 685         return desc_info;
 686 }
 687
 688 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
 689                                         const struct rocker_dma_ring_info *info,
 690                                         u32 credits)
 691 {
 692         if (credits)
 693                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 694 }
 695
 696 static unsigned long rocker_dma_ring_size_fix(size_t size)
 697 {
 698         return max(ROCKER_DMA_SIZE_MIN,
 699                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 700 }
 701
 702 static int rocker_dma_ring_create(const struct rocker *rocker,
 703                                   unsigned int type,
 704                                   size_t size,
 705                                   struct rocker_dma_ring_info *info)
 706 {
 707         int i;
 708
 709         BUG_ON(size != rocker_dma_ring_size_fix(size));
 710         info->size = size;
 711         info->type = type;
 712         info->head = 0;
 713         info->tail = 0;
 714         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
 715                                   GFP_KERNEL);
 716         if (!info->desc_info)
 717                 return -ENOMEM;
 718
 719         info->desc = pci_alloc_consistent(rocker->pdev,
 720                                           info->size * sizeof(*info->desc),
 721                                           &info->mapaddr);
 722         if (!info->desc) {
 723                 kfree(info->desc_info);
 724                 return -ENOMEM;
 725         }
 726
 727         for (i = 0; i < info->size; i++)
 728                 info->desc_info[i].desc = &info->desc[i];
 729
 730         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
 731                        ROCKER_DMA_DESC_CTRL_RESET);
 732         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
 733         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
 734
 735         return 0;
 736 }
 737
 738 static void rocker_dma_ring_destroy(const struct rocker *rocker,
 739                                     const struct rocker_dma_ring_info *info)
 740 {
 741         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
 742
 743         pci_free_consistent(rocker->pdev,
 744                             info->size * sizeof(struct rocker_desc),
 745                             info->desc, info->mapaddr);
 746         kfree(info->desc_info);
 747 }
 748
 749 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
 750                                              struct rocker_dma_ring_info *info)
 751 {
 752         int i;
 753
 754         BUG_ON(info->head || info->tail);
 755
 756         /* When ring is consumer, we need to advance head for each desc.
 757          * That tells hw that the desc is ready to be used by it.
 758          */
 759         for (i = 0; i < info->size - 1; i++)
 760                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
 761         rocker_desc_commit(&info->desc_info[i]);
 762 }
 763
 764 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
 765                                       const struct rocker_dma_ring_info *info,
 766                                       int direction, size_t buf_size)
 767 {
 768         struct pci_dev *pdev = rocker->pdev;
 769         int i;
 770         int err;
 771
 772         for (i = 0; i < info->size; i++) {
 773                 struct rocker_desc_info *desc_info = &info->desc_info[i];
 774                 struct rocker_desc *desc = &info->desc[i];
 775                 dma_addr_t dma_handle;
 776                 char *buf;
 777
 778                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
 779                 if (!buf) {
 780                         err = -ENOMEM;
 781                         goto rollback;
 782                 }
 783
 784                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
 785                 if (pci_dma_mapping_error(pdev, dma_handle)) {
 786                         kfree(buf);
 787                         err = -EIO;
 788                         goto rollback;
 789                 }
 790
 791                 desc_info->data = buf;
 792                 desc_info->data_size = buf_size;
 793                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
 794
 795                 desc->buf_addr = dma_handle;
 796                 desc->buf_size = buf_size;
 797         }
 798         return 0;
 799
 800 rollback:
 801         for (i--; i >= 0; i--) {
 802                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
 803
 804                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
 805                                  desc_info->data_size, direction);
 806                 kfree(desc_info->data);
 807         }
 808         return err;
 809 }
 810
 811 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
 812                                       const struct rocker_dma_ring_info *info,
 813                                       int direction)
 814 {
 815         struct pci_dev *pdev = rocker->pdev;
 816         int i;
 817
 818         for (i = 0; i < info->size; i++) {
 819                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
 820                 struct rocker_desc *desc = &info->desc[i];
 821
 822                 desc->buf_addr = 0;
 823                 desc->buf_size = 0;
 824                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
 825                                  desc_info->data_size, direction);
 826                 kfree(desc_info->data);
 827         }
 828 }
 829
 830 static int rocker_dma_cmd_ring_wait_alloc(struct rocker_desc_info *desc_info)
 831 {
 832         struct rocker_wait *wait;
 833
 834         wait = rocker_wait_create();
 835         if (!wait)
 836                 return -ENOMEM;
 837         rocker_desc_cookie_ptr_set(desc_info, wait);
 838         return 0;
 839 }
 840
 841 static void
 842 rocker_dma_cmd_ring_wait_free(const struct rocker_desc_info *desc_info)
 843 {
 844         struct rocker_wait *wait = rocker_desc_cookie_ptr_get(desc_info);
 845
 846         rocker_wait_destroy(wait);
 847 }
 848
 849 static int rocker_dma_cmd_ring_waits_alloc(const struct rocker *rocker)
 850 {
 851         const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring;
 852         int i;
 853         int err;
 854
 855         for (i = 0; i < cmd_ring->size; i++) {
 856                 err = rocker_dma_cmd_ring_wait_alloc(&cmd_ring->desc_info[i]);
 857                 if (err)
 858                         goto rollback;
 859         }
 860         return 0;
 861
 862 rollback:
 863         for (i--; i >= 0; i--)
 864                 rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]);
 865         return err;
 866 }
 867
 868 static void rocker_dma_cmd_ring_waits_free(const struct rocker *rocker)
 869 {
 870         const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring;
 871         int i;
 872
 873         for (i = 0; i < cmd_ring->size; i++)
 874                 rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]);
 875 }
 876
 877 static int rocker_dma_rings_init(struct rocker *rocker)
 878 {
 879         const struct pci_dev *pdev = rocker->pdev;
 880         int err;
 881
 882         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
 883                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
 884                                      &rocker->cmd_ring);
 885         if (err) {
 886                 dev_err(&pdev->dev, "failed to create command dma ring\n");
 887                 return err;
 888         }
 889
 890         spin_lock_init(&rocker->cmd_ring_lock);
 891
 892         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
 893                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
 894         if (err) {
 895                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
 896                 goto err_dma_cmd_ring_bufs_alloc;
 897         }
 898
 899         err = rocker_dma_cmd_ring_waits_alloc(rocker);
 900         if (err) {
 901                 dev_err(&pdev->dev, "failed to alloc command dma ring waits\n");
 902                 goto err_dma_cmd_ring_waits_alloc;
 903         }
 904
 905         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
 906                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
 907                                      &rocker->event_ring);
 908         if (err) {
 909                 dev_err(&pdev->dev, "failed to create event dma ring\n");
 910                 goto err_dma_event_ring_create;
 911         }
 912
 913         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
 914                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
 915         if (err) {
 916                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
 917                 goto err_dma_event_ring_bufs_alloc;
 918         }
 919         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
 920         return 0;
 921
 922 err_dma_event_ring_bufs_alloc:
 923         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
 924 err_dma_event_ring_create:
 925         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
 926                                   PCI_DMA_BIDIRECTIONAL);
 927 err_dma_cmd_ring_waits_alloc:
 928         rocker_dma_cmd_ring_waits_free(rocker);
 929 err_dma_cmd_ring_bufs_alloc:
 930         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
 931         return err;
 932 }
 933
 934 static void rocker_dma_rings_fini(struct rocker *rocker)
 935 {
 936         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
 937                                   PCI_DMA_BIDIRECTIONAL);
 938         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
 939         rocker_dma_cmd_ring_waits_free(rocker);
 940         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
 941                                   PCI_DMA_BIDIRECTIONAL);
 942         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
 943 }
 944
 945 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
 946                                       struct rocker_desc_info *desc_info,
 947                                       struct sk_buff *skb, size_t buf_len)
 948 {
 949         const struct rocker *rocker = rocker_port->rocker;
 950         struct pci_dev *pdev = rocker->pdev;
 951         dma_addr_t dma_handle;
 952
 953         dma_handle = pci_map_single(pdev, skb->data, buf_len,
 954                                     PCI_DMA_FROMDEVICE);
 955         if (pci_dma_mapping_error(pdev, dma_handle))
 956                 return -EIO;
 957         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
 958                 goto tlv_put_failure;
 959         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
 960                 goto tlv_put_failure;
 961         return 0;
 962
 963 tlv_put_failure:
 964         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
 965         desc_info->tlv_size = 0;
 966         return -EMSGSIZE;
 967 }
 968
 969 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
 970 {
 971         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 972 }
 973
 974 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
 975                                         struct rocker_desc_info *desc_info)
 976 {
 977         struct net_device *dev = rocker_port->dev;
 978         struct sk_buff *skb;
 979         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
 980         int err;
 981
 982         /* Ensure that hw will see tlv_size zero in case of an error.
 983          * That tells hw to use another descriptor.
 984          */
 985         rocker_desc_cookie_ptr_set(desc_info, NULL);
 986         desc_info->tlv_size = 0;
 987
 988         skb = netdev_alloc_skb_ip_align(dev, buf_len);
 989         if (!skb)
 990                 return -ENOMEM;
 991         err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
 992         if (err) {
 993                 dev_kfree_skb_any(skb);
 994                 return err;
 995         }
 996         rocker_desc_cookie_ptr_set(desc_info, skb);
 997         return 0;
 998 }
 999
1000 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
1001                                          const struct rocker_tlv **attrs)
1002 {
1003         struct pci_dev *pdev = rocker->pdev;
1004         dma_addr_t dma_handle;
1005         size_t len;
1006
1007         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1008             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1009                 return;
1010         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1011         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1012         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1013 }
1014
1015 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
1016                                         const struct rocker_desc_info *desc_info)
1017 {
1018         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1019         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1020
1021         if (!skb)
1022                 return;
1023         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1024         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1025         dev_kfree_skb_any(skb);
1026 }
1027
1028 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
1029 {
1030         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1031         const struct rocker *rocker = rocker_port->rocker;
1032         int i;
1033         int err;
1034
1035         for (i = 0; i < rx_ring->size; i++) {
1036                 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
1037                                                    &rx_ring->desc_info[i]);
1038                 if (err)
1039                         goto rollback;
1040         }
1041         return 0;
1042
1043 rollback:
1044         for (i--; i >= 0; i--)
1045                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1046         return err;
1047 }
1048
1049 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
1050 {
1051         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1052         const struct rocker *rocker = rocker_port->rocker;
1053         int i;
1054
1055         for (i = 0; i < rx_ring->size; i++)
1056                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1057 }
1058
1059 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1060 {
1061         struct rocker *rocker = rocker_port->rocker;
1062         int err;
1063
1064         err = rocker_dma_ring_create(rocker,
1065                                      ROCKER_DMA_TX(rocker_port->port_number),
1066                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1067                                      &rocker_port->tx_ring);
1068         if (err) {
1069                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1070                 return err;
1071         }
1072
1073         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1074                                          PCI_DMA_TODEVICE,
1075                                          ROCKER_DMA_TX_DESC_SIZE);
1076         if (err) {
1077                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1078                 goto err_dma_tx_ring_bufs_alloc;
1079         }
1080
1081         err = rocker_dma_ring_create(rocker,
1082                                      ROCKER_DMA_RX(rocker_port->port_number),
1083                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1084                                      &rocker_port->rx_ring);
1085         if (err) {
1086                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1087                 goto err_dma_rx_ring_create;
1088         }
1089
1090         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1091                                          PCI_DMA_BIDIRECTIONAL,
1092                                          ROCKER_DMA_RX_DESC_SIZE);
1093         if (err) {
1094                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1095                 goto err_dma_rx_ring_bufs_alloc;
1096         }
1097
1098         err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
1099         if (err) {
1100                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1101                 goto err_dma_rx_ring_skbs_alloc;
1102         }
1103         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1104
1105         return 0;
1106
1107 err_dma_rx_ring_skbs_alloc:
1108         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1109                                   PCI_DMA_BIDIRECTIONAL);
1110 err_dma_rx_ring_bufs_alloc:
1111         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1112 err_dma_rx_ring_create:
1113         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1114                                   PCI_DMA_TODEVICE);
1115 err_dma_tx_ring_bufs_alloc:
1116         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1117         return err;
1118 }
1119
1120 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1121 {
1122         struct rocker *rocker = rocker_port->rocker;
1123
1124         rocker_dma_rx_ring_skbs_free(rocker_port);
1125         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1126                                   PCI_DMA_BIDIRECTIONAL);
1127         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1128         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1129                                   PCI_DMA_TODEVICE);
1130         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1131 }
1132
1133 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
1134                                    bool enable)
1135 {
1136         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1137
1138         if (enable)
1139                 val |= 1ULL << rocker_port->pport;
1140         else
1141                 val &= ~(1ULL << rocker_port->pport);
1142         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1143 }
1144
1145 /********************************
1146  * Interrupt handler and helpers
1147  ********************************/
1148
1149 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1150 {
1151         struct rocker *rocker = dev_id;
1152         const struct rocker_desc_info *desc_info;
1153         struct rocker_wait *wait;
1154         u32 credits = 0;
1155
1156         spin_lock(&rocker->cmd_ring_lock);
1157         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1158                 wait = rocker_desc_cookie_ptr_get(desc_info);
1159                 if (wait->nowait) {
1160                         rocker_desc_gen_clear(desc_info);
1161                 } else {
1162                         rocker_wait_wake_up(wait);
1163                 }
1164                 credits++;
1165         }
1166         spin_unlock(&rocker->cmd_ring_lock);
1167         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1168
1169         return IRQ_HANDLED;
1170 }
1171
1172 static void rocker_port_link_up(const struct rocker_port *rocker_port)
1173 {
1174         netif_carrier_on(rocker_port->dev);
1175         netdev_info(rocker_port->dev, "Link is up\n");
1176 }
1177
1178 static void rocker_port_link_down(const struct rocker_port *rocker_port)
1179 {
1180         netif_carrier_off(rocker_port->dev);
1181         netdev_info(rocker_port->dev, "Link is down\n");
1182 }
1183
1184 static int rocker_event_link_change(const struct rocker *rocker,
1185                                     const struct rocker_tlv *info)
1186 {
1187         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1188         unsigned int port_number;
1189         bool link_up;
1190         struct rocker_port *rocker_port;
1191
1192         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1193         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1194             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1195                 return -EIO;
1196         port_number =
1197                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1198         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1199
1200         if (port_number >= rocker->port_count)
1201                 return -EINVAL;
1202
1203         rocker_port = rocker->ports[port_number];
1204         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1205                 if (link_up)
1206                         rocker_port_link_up(rocker_port);
1207                 else
1208                         rocker_port_link_down(rocker_port);
1209         }
1210
1211         return 0;
1212 }
1213
1214 static int rocker_port_fdb(struct rocker_port *rocker_port,
1215                            struct switchdev_trans *trans,
1216                            const unsigned char *addr,
1217                            __be16 vlan_id, int flags);
1218 static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
1219                                               const unsigned char *addr,
1220                                               __be16 vlan_id);
1221
1222 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
1223                                       const struct rocker_tlv *info)
1224 {
1225         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1226         unsigned int port_number;
1227         struct rocker_port *rocker_port;
1228         const unsigned char *addr;
1229         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1230         __be16 vlan_id;
1231         int err;
1232
1233         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1234         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1235             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1236             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1237                 return -EIO;
1238         port_number =
1239                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1240         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1241         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1242
1243         if (port_number >= rocker->port_count)
1244                 return -EINVAL;
1245
1246         rocker_port = rocker->ports[port_number];
1247
1248         err = rocker_world_port_ev_mac_vlan_seen(rocker_port, addr, vlan_id);
1249         if (err)
1250                 return err;
1251
1252         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1253             rocker_port->stp_state != BR_STATE_FORWARDING)
1254                 return 0;
1255
1256         return rocker_port_fdb(rocker_port, NULL, addr, vlan_id, flags);
1257 }
1258
1259 static int rocker_event_process(const struct rocker *rocker,
1260                                 const struct rocker_desc_info *desc_info)
1261 {
1262         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1263         const struct rocker_tlv *info;
1264         u16 type;
1265
1266         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1267         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1268             !attrs[ROCKER_TLV_EVENT_INFO])
1269                 return -EIO;
1270
1271         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1272         info = attrs[ROCKER_TLV_EVENT_INFO];
1273
1274         switch (type) {
1275         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1276                 return rocker_event_link_change(rocker, info);
1277         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1278                 return rocker_event_mac_vlan_seen(rocker, info);
1279         }
1280
1281         return -EOPNOTSUPP;
1282 }
1283
1284 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1285 {
1286         struct rocker *rocker = dev_id;
1287         const struct pci_dev *pdev = rocker->pdev;
1288         const struct rocker_desc_info *desc_info;
1289         u32 credits = 0;
1290         int err;
1291
1292         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1293                 err = rocker_desc_err(desc_info);
1294                 if (err) {
1295                         dev_err(&pdev->dev, "event desc received with err %d\n",
1296                                 err);
1297                 } else {
1298                         err = rocker_event_process(rocker, desc_info);
1299                         if (err)
1300                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1301                                         err);
1302                 }
1303                 rocker_desc_gen_clear(desc_info);
1304                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1305                 credits++;
1306         }
1307         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1308
1309         return IRQ_HANDLED;
1310 }
1311
1312 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1313 {
1314         struct rocker_port *rocker_port = dev_id;
1315
1316         napi_schedule(&rocker_port->napi_tx);
1317         return IRQ_HANDLED;
1318 }
1319
1320 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1321 {
1322         struct rocker_port *rocker_port = dev_id;
1323
1324         napi_schedule(&rocker_port->napi_rx);
1325         return IRQ_HANDLED;
1326 }
1327
1328 /********************
1329  * Command interface
1330  ********************/
1331
1332 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
1333                                     struct rocker_desc_info *desc_info,
1334                                     void *priv);
1335
1336 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
1337                                     const struct rocker_desc_info *desc_info,
1338                                     void *priv);
1339
1340 static int rocker_cmd_exec(struct rocker_port *rocker_port, int flags,
1341                            rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1342                            rocker_cmd_proc_cb_t process, void *process_priv)
1343 {
1344         struct rocker *rocker = rocker_port->rocker;
1345         struct rocker_desc_info *desc_info;
1346         struct rocker_wait *wait;
1347         bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
1348         unsigned long lock_flags;
1349         int err;
1350
1351         spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1352
1353         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1354         if (!desc_info) {
1355                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1356                 return -EAGAIN;
1357         }
1358
1359         wait = rocker_desc_cookie_ptr_get(desc_info);
1360         rocker_wait_init(wait);
1361         wait->nowait = nowait;
1362
1363         err = prepare(rocker_port, desc_info, prepare_priv);
1364         if (err) {
1365                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1366                 return err;
1367         }
1368
1369         rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1370
1371         spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1372
1373         if (nowait)
1374                 return 0;
1375
1376         if (!rocker_wait_event_timeout(wait, HZ / 10))
1377                 return -EIO;
1378
1379         err = rocker_desc_err(desc_info);
1380         if (err)
1381                 return err;
1382
1383         if (process)
1384                 err = process(rocker_port, desc_info, process_priv);
1385
1386         rocker_desc_gen_clear(desc_info);
1387         return err;
1388 }
1389
1390 static int
1391 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1392                                   struct rocker_desc_info *desc_info,
1393                                   void *priv)
1394 {
1395         struct rocker_tlv *cmd_info;
1396
1397         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1398                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1399                 return -EMSGSIZE;
1400         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1401         if (!cmd_info)
1402                 return -EMSGSIZE;
1403         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1404                                rocker_port->pport))
1405                 return -EMSGSIZE;
1406         rocker_tlv_nest_end(desc_info, cmd_info);
1407         return 0;
1408 }
1409
1410 static int
1411 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1412                                           const struct rocker_desc_info *desc_info,
1413                                           void *priv)
1414 {
1415         struct ethtool_cmd *ecmd = priv;
1416         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1417         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1418         u32 speed;
1419         u8 duplex;
1420         u8 autoneg;
1421
1422         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1423         if (!attrs[ROCKER_TLV_CMD_INFO])
1424                 return -EIO;
1425
1426         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1427                                 attrs[ROCKER_TLV_CMD_INFO]);
1428         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1429             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1430             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1431                 return -EIO;
1432
1433         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1434         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1435         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1436
1437         ecmd->transceiver = XCVR_INTERNAL;
1438         ecmd->supported = SUPPORTED_TP;
1439         ecmd->phy_address = 0xff;
1440         ecmd->port = PORT_TP;
1441         ethtool_cmd_speed_set(ecmd, speed);
1442         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1443         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1444
1445         return 0;
1446 }
1447
1448 static int
1449 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1450                                           const struct rocker_desc_info *desc_info,
1451                                           void *priv)
1452 {
1453         unsigned char *macaddr = priv;
1454         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1455         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1456         const struct rocker_tlv *attr;
1457
1458         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1459         if (!attrs[ROCKER_TLV_CMD_INFO])
1460                 return -EIO;
1461
1462         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1463                                 attrs[ROCKER_TLV_CMD_INFO]);
1464         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1465         if (!attr)
1466                 return -EIO;
1467
1468         if (rocker_tlv_len(attr) != ETH_ALEN)
1469                 return -EINVAL;
1470
1471         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1472         return 0;
1473 }
1474
1475 static int
1476 rocker_cmd_get_port_settings_mode_proc(const struct rocker_port *rocker_port,
1477                                        const struct rocker_desc_info *desc_info,
1478                                        void *priv)
1479 {
1480         u8 *p_mode = priv;
1481         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1482         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1483         const struct rocker_tlv *attr;
1484
1485         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1486         if (!attrs[ROCKER_TLV_CMD_INFO])
1487                 return -EIO;
1488
1489         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1490                                 attrs[ROCKER_TLV_CMD_INFO]);
1491         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE];
1492         if (!attr)
1493                 return -EIO;
1494
1495         *p_mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]);
1496         return 0;
1497 }
1498
1499 struct port_name {
1500         char *buf;
1501         size_t len;
1502 };
1503
1504 static int
1505 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1506                                             const struct rocker_desc_info *desc_info,
1507                                             void *priv)
1508 {
1509         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1510         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1511         struct port_name *name = priv;
1512         const struct rocker_tlv *attr;
1513         size_t i, j, len;
1514         const char *str;
1515
1516         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1517         if (!attrs[ROCKER_TLV_CMD_INFO])
1518                 return -EIO;
1519
1520         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1521                                 attrs[ROCKER_TLV_CMD_INFO]);
1522         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1523         if (!attr)
1524                 return -EIO;
1525
1526         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1527         str = rocker_tlv_data(attr);
1528
1529         /* make sure name only contains alphanumeric characters */
1530         for (i = j = 0; i < len; ++i) {
1531                 if (isalnum(str[i])) {
1532                         name->buf[j] = str[i];
1533                         j++;
1534                 }
1535         }
1536
1537         if (j == 0)
1538                 return -EIO;
1539
1540         name->buf[j] = '\0';
1541
1542         return 0;
1543 }
1544
1545 static int
1546 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1547                                           struct rocker_desc_info *desc_info,
1548                                           void *priv)
1549 {
1550         struct ethtool_cmd *ecmd = priv;
1551         struct rocker_tlv *cmd_info;
1552
1553         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1554                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1555                 return -EMSGSIZE;
1556         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1557         if (!cmd_info)
1558                 return -EMSGSIZE;
1559         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1560                                rocker_port->pport))
1561                 return -EMSGSIZE;
1562         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1563                                ethtool_cmd_speed(ecmd)))
1564                 return -EMSGSIZE;
1565         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1566                               ecmd->duplex))
1567                 return -EMSGSIZE;
1568         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1569                               ecmd->autoneg))
1570                 return -EMSGSIZE;
1571         rocker_tlv_nest_end(desc_info, cmd_info);
1572         return 0;
1573 }
1574
1575 static int
1576 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1577                                           struct rocker_desc_info *desc_info,
1578                                           void *priv)
1579 {
1580         const unsigned char *macaddr = priv;
1581         struct rocker_tlv *cmd_info;
1582
1583         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1584                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1585                 return -EMSGSIZE;
1586         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1587         if (!cmd_info)
1588                 return -EMSGSIZE;
1589         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1590                                rocker_port->pport))
1591                 return -EMSGSIZE;
1592         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1593                            ETH_ALEN, macaddr))
1594                 return -EMSGSIZE;
1595         rocker_tlv_nest_end(desc_info, cmd_info);
1596         return 0;
1597 }
1598
1599 static int
1600 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1601                                       struct rocker_desc_info *desc_info,
1602                                       void *priv)
1603 {
1604         int mtu = *(int *)priv;
1605         struct rocker_tlv *cmd_info;
1606
1607         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1608                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1609                 return -EMSGSIZE;
1610         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1611         if (!cmd_info)
1612                 return -EMSGSIZE;
1613         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1614                                rocker_port->pport))
1615                 return -EMSGSIZE;
1616         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1617                                mtu))
1618                 return -EMSGSIZE;
1619         rocker_tlv_nest_end(desc_info, cmd_info);
1620         return 0;
1621 }
1622
1623 static int
1624 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1625                                   struct rocker_desc_info *desc_info,
1626                                   void *priv)
1627 {
1628         bool learning = *(bool *)priv;
1629         struct rocker_tlv *cmd_info;
1630
1631         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1632                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1633                 return -EMSGSIZE;
1634         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1635         if (!cmd_info)
1636                 return -EMSGSIZE;
1637         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1638                                rocker_port->pport))
1639                 return -EMSGSIZE;
1640         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1641                               learning))
1642                 return -EMSGSIZE;
1643         rocker_tlv_nest_end(desc_info, cmd_info);
1644         return 0;
1645 }
1646
1647 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1648                                                 struct ethtool_cmd *ecmd)
1649 {
1650         return rocker_cmd_exec(rocker_port, 0,
1651                                rocker_cmd_get_port_settings_prep, NULL,
1652                                rocker_cmd_get_port_settings_ethtool_proc,
1653                                ecmd);
1654 }
1655
1656 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1657                                                 unsigned char *macaddr)
1658 {
1659         return rocker_cmd_exec(rocker_port, 0,
1660                                rocker_cmd_get_port_settings_prep, NULL,
1661                                rocker_cmd_get_port_settings_macaddr_proc,
1662                                macaddr);
1663 }
1664
1665 static int rocker_cmd_get_port_settings_mode(struct rocker_port *rocker_port,
1666                                              u8 *p_mode)
1667 {
1668         return rocker_cmd_exec(rocker_port, 0,
1669                                rocker_cmd_get_port_settings_prep, NULL,
1670                                rocker_cmd_get_port_settings_mode_proc, p_mode);
1671 }
1672
1673 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1674                                                 struct ethtool_cmd *ecmd)
1675 {
1676         return rocker_cmd_exec(rocker_port, 0,
1677                                rocker_cmd_set_port_settings_ethtool_prep,
1678                                ecmd, NULL, NULL);
1679 }
1680
1681 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1682                                                 unsigned char *macaddr)
1683 {
1684         return rocker_cmd_exec(rocker_port, 0,
1685                                rocker_cmd_set_port_settings_macaddr_prep,
1686                                macaddr, NULL, NULL);
1687 }
1688
1689 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1690                                             int mtu)
1691 {
1692         return rocker_cmd_exec(rocker_port, 0,
1693                                rocker_cmd_set_port_settings_mtu_prep,
1694                                &mtu, NULL, NULL);
1695 }
1696
1697 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1698                                     bool learning)
1699 {
1700         return rocker_cmd_exec(rocker_port, 0,
1701                                rocker_cmd_set_port_learning_prep,
1702                                &learning, NULL, NULL);
1703 }
1704
1705 /**********************
1706  * Worlds manipulation
1707  **********************/
1708
1709 static struct rocker_world_ops *rocker_world_ops[] = {
1710         &rocker_ofdpa_ops,
1711 };
1712
1713 #define ROCKER_WORLD_OPS_LEN ARRAY_SIZE(rocker_world_ops)
1714
1715 static struct rocker_world_ops *rocker_world_ops_find(u8 mode)
1716 {
1717         int i;
1718
1719         for (i = 0; i < ROCKER_WORLD_OPS_LEN; i++)
1720                 if (rocker_world_ops[i]->mode == mode)
1721                         return rocker_world_ops[i];
1722         return NULL;
1723 }
1724
1725 static int rocker_world_init(struct rocker *rocker, u8 mode)
1726 {
1727         struct rocker_world_ops *wops;
1728         int err;
1729
1730         wops = rocker_world_ops_find(mode);
1731         if (!wops) {
1732                 dev_err(&rocker->pdev->dev, "port mode \"%d\" is not supported\n",
1733                         mode);
1734                 return -EINVAL;
1735         }
1736         rocker->wops = wops;
1737         rocker->wpriv = kzalloc(wops->priv_size, GFP_KERNEL);
1738         if (!rocker->wpriv)
1739                 return -ENOMEM;
1740         if (!wops->init)
1741                 return 0;
1742         err = wops->init(rocker);
1743         if (err)
1744                 kfree(rocker->wpriv);
1745         return err;
1746 }
1747
1748 static void rocker_world_fini(struct rocker *rocker)
1749 {
1750         struct rocker_world_ops *wops = rocker->wops;
1751
1752         if (!wops || !wops->fini)
1753                 return;
1754         wops->fini(rocker);
1755         kfree(rocker->wpriv);
1756 }
1757
1758 static int rocker_world_check_init(struct rocker_port *rocker_port)
1759 {
1760         struct rocker *rocker = rocker_port->rocker;
1761         u8 mode;
1762         int err;
1763
1764         err = rocker_cmd_get_port_settings_mode(rocker_port, &mode);
1765         if (err) {
1766                 dev_err(&rocker->pdev->dev, "failed to get port mode\n");
1767                 return err;
1768         }
1769         if (rocker->wops) {
1770                 if (rocker->wops->mode != mode) {
1771                         dev_err(&rocker->pdev->dev, "hardware has ports in different worlds, which is not supported\n");
1772                         return err;
1773                 }
1774                 return 0;
1775         }
1776         return rocker_world_init(rocker, mode);
1777 }
1778
1779 static int rocker_world_port_pre_init(struct rocker_port *rocker_port)
1780 {
1781         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1782         int err;
1783
1784         rocker_port->wpriv = kzalloc(wops->port_priv_size, GFP_KERNEL);
1785         if (!rocker_port->wpriv)
1786                 return -ENOMEM;
1787         if (!wops->port_pre_init)
1788                 return 0;
1789         err = wops->port_pre_init(rocker_port);
1790         if (err)
1791                 kfree(rocker_port->wpriv);
1792         return 0;
1793 }
1794
1795 static int rocker_world_port_init(struct rocker_port *rocker_port)
1796 {
1797         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1798
1799         if (!wops->port_init)
1800                 return 0;
1801         return wops->port_init(rocker_port);
1802 }
1803
1804 static void rocker_world_port_fini(struct rocker_port *rocker_port)
1805 {
1806         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1807
1808         if (!wops->port_fini)
1809                 return;
1810         wops->port_fini(rocker_port);
1811 }
1812
1813 static void rocker_world_port_post_fini(struct rocker_port *rocker_port)
1814 {
1815         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1816
1817         if (!wops->port_post_fini)
1818                 return;
1819         wops->port_post_fini(rocker_port);
1820         kfree(rocker_port->wpriv);
1821 }
1822
1823 static int rocker_world_port_open(struct rocker_port *rocker_port)
1824 {
1825         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1826
1827         if (!wops->port_open)
1828                 return 0;
1829         return wops->port_open(rocker_port);
1830 }
1831
1832 static void rocker_world_port_stop(struct rocker_port *rocker_port)
1833 {
1834         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1835
1836         if (!wops->port_stop)
1837                 return;
1838         wops->port_stop(rocker_port);
1839 }
1840
1841 static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port,
1842                                                 u8 state,
1843                                                 struct switchdev_trans *trans)
1844 {
1845         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1846
1847         if (!wops->port_attr_stp_state_set)
1848                 return 0;
1849         return wops->port_attr_stp_state_set(rocker_port, state, trans);
1850 }
1851
1852 static int
1853 rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
1854                                         unsigned long brport_flags,
1855                                         struct switchdev_trans *trans)
1856 {
1857         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1858
1859         if (!wops->port_attr_bridge_flags_set)
1860                 return 0;
1861         return wops->port_attr_bridge_flags_set(rocker_port, brport_flags,
1862                                                 trans);
1863 }
1864
1865 static int
1866 rocker_world_port_attr_bridge_flags_get(const struct rocker_port *rocker_port,
1867                                         unsigned long *p_brport_flags)
1868 {
1869         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1870
1871         if (!wops->port_attr_bridge_flags_get)
1872                 return 0;
1873         return wops->port_attr_bridge_flags_get(rocker_port, p_brport_flags);
1874 }
1875
1876 static int
1877 rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port,
1878                                               u32 ageing_time,
1879                                               struct switchdev_trans *trans)
1880
1881 {
1882         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1883
1884         if (!wops->port_attr_bridge_ageing_time_set)
1885                 return 0;
1886         return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time,
1887                                                       trans);
1888 }
1889
1890 static int
1891 rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port,
1892                                const struct switchdev_obj_port_vlan *vlan,
1893                                struct switchdev_trans *trans)
1894 {
1895         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1896
1897         if (!wops->port_obj_vlan_add)
1898                 return 0;
1899         return wops->port_obj_vlan_add(rocker_port, vlan, trans);
1900 }
1901
1902 static int
1903 rocker_world_port_obj_vlan_del(struct rocker_port *rocker_port,
1904                                const struct switchdev_obj_port_vlan *vlan)
1905 {
1906         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1907
1908         if (!wops->port_obj_vlan_del)
1909                 return 0;
1910         return wops->port_obj_vlan_del(rocker_port, vlan);
1911 }
1912
1913 static int
1914 rocker_world_port_obj_vlan_dump(const struct rocker_port *rocker_port,
1915                                 struct switchdev_obj_port_vlan *vlan,
1916                                 switchdev_obj_dump_cb_t *cb)
1917 {
1918         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1919
1920         if (!wops->port_obj_vlan_dump)
1921                 return 0;
1922         return wops->port_obj_vlan_dump(rocker_port, vlan, cb);
1923 }
1924
1925 static int
1926 rocker_world_port_obj_fib4_add(struct rocker_port *rocker_port,
1927                                const struct switchdev_obj_ipv4_fib *fib4,
1928                                struct switchdev_trans *trans)
1929 {
1930         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1931
1932         if (!wops->port_obj_fib4_add)
1933                 return 0;
1934         return wops->port_obj_fib4_add(rocker_port, fib4, trans);
1935 }
1936
1937 static int
1938 rocker_world_port_obj_fib4_del(struct rocker_port *rocker_port,
1939                                const struct switchdev_obj_ipv4_fib *fib4)
1940 {
1941         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1942
1943         if (!wops->port_obj_fib4_del)
1944                 return 0;
1945         return wops->port_obj_fib4_del(rocker_port, fib4);
1946 }
1947
1948 static int
1949 rocker_world_port_obj_fdb_add(struct rocker_port *rocker_port,
1950                               const struct switchdev_obj_port_fdb *fdb,
1951                               struct switchdev_trans *trans)
1952 {
1953         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1954
1955         if (!wops->port_obj_fdb_add)
1956                 return 0;
1957         return wops->port_obj_fdb_add(rocker_port, fdb, trans);
1958 }
1959
1960 static int
1961 rocker_world_port_obj_fdb_del(struct rocker_port *rocker_port,
1962                               const struct switchdev_obj_port_fdb *fdb)
1963 {
1964         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1965
1966         if (!wops->port_obj_fdb_del)
1967                 return 0;
1968         return wops->port_obj_fdb_del(rocker_port, fdb);
1969 }
1970
1971 static int
1972 rocker_world_port_obj_fdb_dump(const struct rocker_port *rocker_port,
1973                                struct switchdev_obj_port_fdb *fdb,
1974                                switchdev_obj_dump_cb_t *cb)
1975 {
1976         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1977
1978         if (!wops->port_obj_fdb_dump)
1979                 return 0;
1980         return wops->port_obj_fdb_dump(rocker_port, fdb, cb);
1981 }
1982
1983 static int rocker_world_port_master_linked(struct rocker_port *rocker_port,
1984                                            struct net_device *master)
1985 {
1986         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1987
1988         if (!wops->port_master_linked)
1989                 return 0;
1990         return wops->port_master_linked(rocker_port, master);
1991 }
1992
1993 static int rocker_world_port_master_unlinked(struct rocker_port *rocker_port,
1994                                              struct net_device *master)
1995 {
1996         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1997
1998         if (!wops->port_master_unlinked)
1999                 return 0;
2000         return wops->port_master_unlinked(rocker_port, master);
2001 }
2002
2003 static int rocker_world_port_neigh_update(struct rocker_port *rocker_port,
2004                                           struct neighbour *n)
2005 {
2006         struct rocker_world_ops *wops = rocker_port->rocker->wops;
2007
2008         if (!wops->port_neigh_update)
2009                 return 0;
2010         return wops->port_neigh_update(rocker_port, n);
2011 }
2012
2013 static int rocker_world_port_neigh_destroy(struct rocker_port *rocker_port,
2014                                            struct neighbour *n)
2015 {
2016         struct rocker_world_ops *wops = rocker_port->rocker->wops;
2017
2018         if (!wops->port_neigh_destroy)
2019                 return 0;
2020         return wops->port_neigh_destroy(rocker_port, n);
2021 }
2022
2023 static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
2024                                               const unsigned char *addr,
2025                                               __be16 vlan_id)
2026 {
2027         struct rocker_world_ops *wops = rocker_port->rocker->wops;
2028
2029         if (!wops->port_ev_mac_vlan_seen)
2030                 return 0;
2031         return wops->port_ev_mac_vlan_seen(rocker_port, addr, vlan_id);
2032 }
2033
2034 static int
2035 rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
2036                                 const struct rocker_flow_tbl_entry *entry)
2037 {
2038         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2039                                entry->key.ig_port.in_pport))
2040                 return -EMSGSIZE;
2041         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2042                                entry->key.ig_port.in_pport_mask))
2043                 return -EMSGSIZE;
2044         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2045                                entry->key.ig_port.goto_tbl))
2046                 return -EMSGSIZE;
2047
2048         return 0;
2049 }
2050
2051 static int
2052 rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
2053                              const struct rocker_flow_tbl_entry *entry)
2054 {
2055         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2056                                entry->key.vlan.in_pport))
2057                 return -EMSGSIZE;
2058         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2059                                 entry->key.vlan.vlan_id))
2060                 return -EMSGSIZE;
2061         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2062                                 entry->key.vlan.vlan_id_mask))
2063                 return -EMSGSIZE;
2064         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2065                                entry->key.vlan.goto_tbl))
2066                 return -EMSGSIZE;
2067         if (entry->key.vlan.untagged &&
2068             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
2069                                 entry->key.vlan.new_vlan_id))
2070                 return -EMSGSIZE;
2071
2072         return 0;
2073 }
2074
2075 static int
2076 rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
2077                                  const struct rocker_flow_tbl_entry *entry)
2078 {
2079         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2080                                entry->key.term_mac.in_pport))
2081                 return -EMSGSIZE;
2082         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2083                                entry->key.term_mac.in_pport_mask))
2084                 return -EMSGSIZE;
2085         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2086                                 entry->key.term_mac.eth_type))
2087                 return -EMSGSIZE;
2088         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2089                            ETH_ALEN, entry->key.term_mac.eth_dst))
2090                 return -EMSGSIZE;
2091         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2092                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
2093                 return -EMSGSIZE;
2094         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2095                                 entry->key.term_mac.vlan_id))
2096                 return -EMSGSIZE;
2097         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2098                                 entry->key.term_mac.vlan_id_mask))
2099                 return -EMSGSIZE;
2100         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2101                                entry->key.term_mac.goto_tbl))
2102                 return -EMSGSIZE;
2103         if (entry->key.term_mac.copy_to_cpu &&
2104             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2105                               entry->key.term_mac.copy_to_cpu))
2106                 return -EMSGSIZE;
2107
2108         return 0;
2109 }
2110
2111 static int
2112 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
2113                                       const struct rocker_flow_tbl_entry *entry)
2114 {
2115         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2116                                 entry->key.ucast_routing.eth_type))
2117                 return -EMSGSIZE;
2118         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
2119                                 entry->key.ucast_routing.dst4))
2120                 return -EMSGSIZE;
2121         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
2122                                 entry->key.ucast_routing.dst4_mask))
2123                 return -EMSGSIZE;
2124         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2125                                entry->key.ucast_routing.goto_tbl))
2126                 return -EMSGSIZE;
2127         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2128                                entry->key.ucast_routing.group_id))
2129                 return -EMSGSIZE;
2130
2131         return 0;
2132 }
2133
2134 static int
2135 rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2136                                const struct rocker_flow_tbl_entry *entry)
2137 {
2138         if (entry->key.bridge.has_eth_dst &&
2139             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2140                            ETH_ALEN, entry->key.bridge.eth_dst))
2141                 return -EMSGSIZE;
2142         if (entry->key.bridge.has_eth_dst_mask &&
2143             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2144                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
2145                 return -EMSGSIZE;
2146         if (entry->key.bridge.vlan_id &&
2147             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2148                                 entry->key.bridge.vlan_id))
2149                 return -EMSGSIZE;
2150         if (entry->key.bridge.tunnel_id &&
2151             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2152                                entry->key.bridge.tunnel_id))
2153                 return -EMSGSIZE;
2154         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2155                                entry->key.bridge.goto_tbl))
2156                 return -EMSGSIZE;
2157         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2158                                entry->key.bridge.group_id))
2159                 return -EMSGSIZE;
2160         if (entry->key.bridge.copy_to_cpu &&
2161             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2162                               entry->key.bridge.copy_to_cpu))
2163                 return -EMSGSIZE;
2164
2165         return 0;
2166 }
2167
2168 static int
2169 rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2170                             const struct rocker_flow_tbl_entry *entry)
2171 {
2172         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2173                                entry->key.acl.in_pport))
2174                 return -EMSGSIZE;
2175         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2176                                entry->key.acl.in_pport_mask))
2177                 return -EMSGSIZE;
2178         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2179                            ETH_ALEN, entry->key.acl.eth_src))
2180                 return -EMSGSIZE;
2181         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2182                            ETH_ALEN, entry->key.acl.eth_src_mask))
2183                 return -EMSGSIZE;
2184         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2185                            ETH_ALEN, entry->key.acl.eth_dst))
2186                 return -EMSGSIZE;
2187         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2188                            ETH_ALEN, entry->key.acl.eth_dst_mask))
2189                 return -EMSGSIZE;
2190         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2191                                 entry->key.acl.eth_type))
2192                 return -EMSGSIZE;
2193         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2194                                 entry->key.acl.vlan_id))
2195                 return -EMSGSIZE;
2196         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2197                                 entry->key.acl.vlan_id_mask))
2198                 return -EMSGSIZE;
2199
2200         switch (ntohs(entry->key.acl.eth_type)) {
2201         case ETH_P_IP:
2202         case ETH_P_IPV6:
2203                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2204                                       entry->key.acl.ip_proto))
2205                         return -EMSGSIZE;
2206                 if (rocker_tlv_put_u8(desc_info,
2207                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2208                                       entry->key.acl.ip_proto_mask))
2209                         return -EMSGSIZE;
2210                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2211                                       entry->key.acl.ip_tos & 0x3f))
2212                         return -EMSGSIZE;
2213                 if (rocker_tlv_put_u8(desc_info,
2214                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2215                                       entry->key.acl.ip_tos_mask & 0x3f))
2216                         return -EMSGSIZE;
2217                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2218                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
2219                         return -EMSGSIZE;
2220                 if (rocker_tlv_put_u8(desc_info,
2221                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2222                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2223                         return -EMSGSIZE;
2224                 break;
2225         }
2226
2227         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2228             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2229                                entry->key.acl.group_id))
2230                 return -EMSGSIZE;
2231
2232         return 0;
2233 }
2234
2235 static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
2236                                    struct rocker_desc_info *desc_info,
2237                                    void *priv)
2238 {
2239         const struct rocker_flow_tbl_entry *entry = priv;
2240         struct rocker_tlv *cmd_info;
2241         int err = 0;
2242
2243         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2244                 return -EMSGSIZE;
2245         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2246         if (!cmd_info)
2247                 return -EMSGSIZE;
2248         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2249                                entry->key.tbl_id))
2250                 return -EMSGSIZE;
2251         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2252                                entry->key.priority))
2253                 return -EMSGSIZE;
2254         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2255                 return -EMSGSIZE;
2256         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2257                                entry->cookie))
2258                 return -EMSGSIZE;
2259
2260         switch (entry->key.tbl_id) {
2261         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2262                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2263                 break;
2264         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2265                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2266                 break;
2267         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2268                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2269                 break;
2270         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2271                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2272                 break;
2273         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2274                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2275                 break;
2276         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2277                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2278                 break;
2279         default:
2280                 err = -ENOTSUPP;
2281                 break;
2282         }
2283
2284         if (err)
2285                 return err;
2286
2287         rocker_tlv_nest_end(desc_info, cmd_info);
2288
2289         return 0;
2290 }
2291
2292 static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
2293                                    struct rocker_desc_info *desc_info,
2294                                    void *priv)
2295 {
2296         const struct rocker_flow_tbl_entry *entry = priv;
2297         struct rocker_tlv *cmd_info;
2298
2299         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2300                 return -EMSGSIZE;
2301         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2302         if (!cmd_info)
2303                 return -EMSGSIZE;
2304         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2305                                entry->cookie))
2306                 return -EMSGSIZE;
2307         rocker_tlv_nest_end(desc_info, cmd_info);
2308
2309         return 0;
2310 }
2311
2312 static int
2313 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2314                                       struct rocker_group_tbl_entry *entry)
2315 {
2316         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2317                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2318                 return -EMSGSIZE;
2319         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2320                               entry->l2_interface.pop_vlan))
2321                 return -EMSGSIZE;
2322
2323         return 0;
2324 }
2325
2326 static int
2327 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2328                                     const struct rocker_group_tbl_entry *entry)
2329 {
2330         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2331                                entry->l2_rewrite.group_id))
2332                 return -EMSGSIZE;
2333         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2334             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2335                            ETH_ALEN, entry->l2_rewrite.eth_src))
2336                 return -EMSGSIZE;
2337         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2338             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2339                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2340                 return -EMSGSIZE;
2341         if (entry->l2_rewrite.vlan_id &&
2342             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2343                                 entry->l2_rewrite.vlan_id))
2344                 return -EMSGSIZE;
2345
2346         return 0;
2347 }
2348
2349 static int
2350 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2351                                    const struct rocker_group_tbl_entry *entry)
2352 {
2353         int i;
2354         struct rocker_tlv *group_ids;
2355
2356         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2357                                entry->group_count))
2358                 return -EMSGSIZE;
2359
2360         group_ids = rocker_tlv_nest_start(desc_info,
2361                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2362         if (!group_ids)
2363                 return -EMSGSIZE;
2364
2365         for (i = 0; i < entry->group_count; i++)
2366                 /* Note TLV array is 1-based */
2367                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2368                         return -EMSGSIZE;
2369
2370         rocker_tlv_nest_end(desc_info, group_ids);
2371
2372         return 0;
2373 }
2374
2375 static int
2376 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2377                                     const struct rocker_group_tbl_entry *entry)
2378 {
2379         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2380             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2381                            ETH_ALEN, entry->l3_unicast.eth_src))
2382                 return -EMSGSIZE;
2383         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2384             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2385                            ETH_ALEN, entry->l3_unicast.eth_dst))
2386                 return -EMSGSIZE;
2387         if (entry->l3_unicast.vlan_id &&
2388             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2389                                 entry->l3_unicast.vlan_id))
2390                 return -EMSGSIZE;
2391         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2392                               entry->l3_unicast.ttl_check))
2393                 return -EMSGSIZE;
2394         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2395                                entry->l3_unicast.group_id))
2396                 return -EMSGSIZE;
2397
2398         return 0;
2399 }
2400
2401 static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
2402                                     struct rocker_desc_info *desc_info,
2403                                     void *priv)
2404 {
2405         struct rocker_group_tbl_entry *entry = priv;
2406         struct rocker_tlv *cmd_info;
2407         int err = 0;
2408
2409         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2410                 return -EMSGSIZE;
2411         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2412         if (!cmd_info)
2413                 return -EMSGSIZE;
2414
2415         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2416                                entry->group_id))
2417                 return -EMSGSIZE;
2418
2419         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2420         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2421                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2422                 break;
2423         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2424                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2425                 break;
2426         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2427         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2428                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2429                 break;
2430         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2431                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2432                 break;
2433         default:
2434                 err = -ENOTSUPP;
2435                 break;
2436         }
2437
2438         if (err)
2439                 return err;
2440
2441         rocker_tlv_nest_end(desc_info, cmd_info);
2442
2443         return 0;
2444 }
2445
2446 static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
2447                                     struct rocker_desc_info *desc_info,
2448                                     void *priv)
2449 {
2450         const struct rocker_group_tbl_entry *entry = priv;
2451         struct rocker_tlv *cmd_info;
2452
2453         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2454                 return -EMSGSIZE;
2455         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2456         if (!cmd_info)
2457                 return -EMSGSIZE;
2458         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2459                                entry->group_id))
2460                 return -EMSGSIZE;
2461         rocker_tlv_nest_end(desc_info, cmd_info);
2462
2463         return 0;
2464 }
2465
2466 /***************************************************
2467  * Flow, group, FDB, internal VLAN and neigh tables
2468  ***************************************************/
2469
2470 static int rocker_init_tbls(struct rocker *rocker)
2471 {
2472         hash_init(rocker->flow_tbl);
2473         spin_lock_init(&rocker->flow_tbl_lock);
2474
2475         hash_init(rocker->group_tbl);
2476         spin_lock_init(&rocker->group_tbl_lock);
2477
2478         hash_init(rocker->fdb_tbl);
2479         spin_lock_init(&rocker->fdb_tbl_lock);
2480
2481         hash_init(rocker->internal_vlan_tbl);
2482         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2483
2484         hash_init(rocker->neigh_tbl);
2485         spin_lock_init(&rocker->neigh_tbl_lock);
2486
2487         return 0;
2488 }
2489
2490 static void rocker_free_tbls(struct rocker *rocker)
2491 {
2492         unsigned long flags;
2493         struct rocker_flow_tbl_entry *flow_entry;
2494         struct rocker_group_tbl_entry *group_entry;
2495         struct rocker_fdb_tbl_entry *fdb_entry;
2496         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2497         struct rocker_neigh_tbl_entry *neigh_entry;
2498         struct hlist_node *tmp;
2499         int bkt;
2500
2501         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2502         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2503                 hash_del(&flow_entry->entry);
2504         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2505
2506         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2507         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2508                 hash_del(&group_entry->entry);
2509         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2510
2511         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2512         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2513                 hash_del(&fdb_entry->entry);
2514         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2515
2516         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2517         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2518                            tmp, internal_vlan_entry, entry)
2519                 hash_del(&internal_vlan_entry->entry);
2520         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2521
2522         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2523         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2524                 hash_del(&neigh_entry->entry);
2525         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2526 }
2527
2528 static struct rocker_flow_tbl_entry *
2529 rocker_flow_tbl_find(const struct rocker *rocker,
2530                      const struct rocker_flow_tbl_entry *match)
2531 {
2532         struct rocker_flow_tbl_entry *found;
2533         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2534
2535         hash_for_each_possible(rocker->flow_tbl, found,
2536                                entry, match->key_crc32) {
2537                 if (memcmp(&found->key, &match->key, key_len) == 0)
2538                         return found;
2539         }
2540
2541         return NULL;
2542 }
2543
2544 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2545                                struct switchdev_trans *trans, int flags,
2546                                struct rocker_flow_tbl_entry *match)
2547 {
2548         struct rocker *rocker = rocker_port->rocker;
2549         struct rocker_flow_tbl_entry *found;
2550         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2551         unsigned long lock_flags;
2552
2553         match->key_crc32 = crc32(~0, &match->key, key_len);
2554
2555         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2556
2557         found = rocker_flow_tbl_find(rocker, match);
2558
2559         if (found) {
2560                 match->cookie = found->cookie;
2561                 if (!switchdev_trans_ph_prepare(trans))
2562                         hash_del(&found->entry);
2563                 rocker_kfree(trans, found);
2564                 found = match;
2565                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2566         } else {
2567                 found = match;
2568                 found->cookie = rocker->flow_tbl_next_cookie++;
2569                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2570         }
2571
2572         if (!switchdev_trans_ph_prepare(trans))
2573                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2574
2575         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2576
2577         if (!switchdev_trans_ph_prepare(trans))
2578                 return rocker_cmd_exec(rocker_port, flags,
2579                                        rocker_cmd_flow_tbl_add,
2580                                        found, NULL, NULL);
2581         return 0;
2582 }
2583
2584 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2585                                struct switchdev_trans *trans, int flags,
2586                                struct rocker_flow_tbl_entry *match)
2587 {
2588         struct rocker *rocker = rocker_port->rocker;
2589         struct rocker_flow_tbl_entry *found;
2590         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2591         unsigned long lock_flags;
2592         int err = 0;
2593
2594         match->key_crc32 = crc32(~0, &match->key, key_len);
2595
2596         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2597
2598         found = rocker_flow_tbl_find(rocker, match);
2599
2600         if (found) {
2601                 if (!switchdev_trans_ph_prepare(trans))
2602                         hash_del(&found->entry);
2603                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2604         }
2605
2606         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2607
2608         rocker_kfree(trans, match);
2609
2610         if (found) {
2611                 if (!switchdev_trans_ph_prepare(trans))
2612                         err = rocker_cmd_exec(rocker_port, flags,
2613                                               rocker_cmd_flow_tbl_del,
2614                                               found, NULL, NULL);
2615                 rocker_kfree(trans, found);
2616         }
2617
2618         return err;
2619 }
2620
2621 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2622                               struct switchdev_trans *trans, int flags,
2623                               struct rocker_flow_tbl_entry *entry)
2624 {
2625         if (flags & ROCKER_OP_FLAG_REMOVE)
2626                 return rocker_flow_tbl_del(rocker_port, trans, flags, entry);
2627         else
2628                 return rocker_flow_tbl_add(rocker_port, trans, flags, entry);
2629 }
2630
2631 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2632                                    struct switchdev_trans *trans, int flags,
2633                                    u32 in_pport, u32 in_pport_mask,
2634                                    enum rocker_of_dpa_table_id goto_tbl)
2635 {
2636         struct rocker_flow_tbl_entry *entry;
2637
2638         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2639         if (!entry)
2640                 return -ENOMEM;
2641
2642         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2643         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2644         entry->key.ig_port.in_pport = in_pport;
2645         entry->key.ig_port.in_pport_mask = in_pport_mask;
2646         entry->key.ig_port.goto_tbl = goto_tbl;
2647
2648         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2649 }
2650
2651 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2652                                 struct switchdev_trans *trans, int flags,
2653                                 u32 in_pport, __be16 vlan_id,
2654                                 __be16 vlan_id_mask,
2655                                 enum rocker_of_dpa_table_id goto_tbl,
2656                                 bool untagged, __be16 new_vlan_id)
2657 {
2658         struct rocker_flow_tbl_entry *entry;
2659
2660         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2661         if (!entry)
2662                 return -ENOMEM;
2663
2664         entry->key.priority = ROCKER_PRIORITY_VLAN;
2665         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2666         entry->key.vlan.in_pport = in_pport;
2667         entry->key.vlan.vlan_id = vlan_id;
2668         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2669         entry->key.vlan.goto_tbl = goto_tbl;
2670
2671         entry->key.vlan.untagged = untagged;
2672         entry->key.vlan.new_vlan_id = new_vlan_id;
2673
2674         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2675 }
2676
2677 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2678                                     struct switchdev_trans *trans,
2679                                     u32 in_pport, u32 in_pport_mask,
2680                                     __be16 eth_type, const u8 *eth_dst,
2681                                     const u8 *eth_dst_mask, __be16 vlan_id,
2682                                     __be16 vlan_id_mask, bool copy_to_cpu,
2683                                     int flags)
2684 {
2685         struct rocker_flow_tbl_entry *entry;
2686
2687         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2688         if (!entry)
2689                 return -ENOMEM;
2690
2691         if (is_multicast_ether_addr(eth_dst)) {
2692                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2693                 entry->key.term_mac.goto_tbl =
2694                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2695         } else {
2696                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2697                 entry->key.term_mac.goto_tbl =
2698                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2699         }
2700
2701         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2702         entry->key.term_mac.in_pport = in_pport;
2703         entry->key.term_mac.in_pport_mask = in_pport_mask;
2704         entry->key.term_mac.eth_type = eth_type;
2705         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2706         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2707         entry->key.term_mac.vlan_id = vlan_id;
2708         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2709         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2710
2711         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2712 }
2713
2714 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2715                                   struct switchdev_trans *trans, int flags,
2716                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2717                                   __be16 vlan_id, u32 tunnel_id,
2718                                   enum rocker_of_dpa_table_id goto_tbl,
2719                                   u32 group_id, bool copy_to_cpu)
2720 {
2721         struct rocker_flow_tbl_entry *entry;
2722         u32 priority;
2723         bool vlan_bridging = !!vlan_id;
2724         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2725         bool wild = false;
2726
2727         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2728         if (!entry)
2729                 return -ENOMEM;
2730
2731         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2732
2733         if (eth_dst) {
2734                 entry->key.bridge.has_eth_dst = 1;
2735                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2736         }
2737         if (eth_dst_mask) {
2738                 entry->key.bridge.has_eth_dst_mask = 1;
2739                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2740                 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2741                         wild = true;
2742         }
2743
2744         priority = ROCKER_PRIORITY_UNKNOWN;
2745         if (vlan_bridging && dflt && wild)
2746                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2747         else if (vlan_bridging && dflt && !wild)
2748                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2749         else if (vlan_bridging && !dflt)
2750                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2751         else if (!vlan_bridging && dflt && wild)
2752                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2753         else if (!vlan_bridging && dflt && !wild)
2754                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2755         else if (!vlan_bridging && !dflt)
2756                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2757
2758         entry->key.priority = priority;
2759         entry->key.bridge.vlan_id = vlan_id;
2760         entry->key.bridge.tunnel_id = tunnel_id;
2761         entry->key.bridge.goto_tbl = goto_tbl;
2762         entry->key.bridge.group_id = group_id;
2763         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2764
2765         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2766 }
2767
2768 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2769                                           struct switchdev_trans *trans,
2770                                           __be16 eth_type, __be32 dst,
2771                                           __be32 dst_mask, u32 priority,
2772                                           enum rocker_of_dpa_table_id goto_tbl,
2773                                           u32 group_id, int flags)
2774 {
2775         struct rocker_flow_tbl_entry *entry;
2776
2777         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2778         if (!entry)
2779                 return -ENOMEM;
2780
2781         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2782         entry->key.priority = priority;
2783         entry->key.ucast_routing.eth_type = eth_type;
2784         entry->key.ucast_routing.dst4 = dst;
2785         entry->key.ucast_routing.dst4_mask = dst_mask;
2786         entry->key.ucast_routing.goto_tbl = goto_tbl;
2787         entry->key.ucast_routing.group_id = group_id;
2788         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2789                                   ucast_routing.group_id);
2790
2791         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2792 }
2793
2794 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2795                                struct switchdev_trans *trans, int flags,
2796                                u32 in_pport, u32 in_pport_mask,
2797                                const u8 *eth_src, const u8 *eth_src_mask,
2798                                const u8 *eth_dst, const u8 *eth_dst_mask,
2799                                __be16 eth_type, __be16 vlan_id,
2800                                __be16 vlan_id_mask, u8 ip_proto,
2801                                u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2802                                u32 group_id)
2803 {
2804         u32 priority;
2805         struct rocker_flow_tbl_entry *entry;
2806
2807         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2808         if (!entry)
2809                 return -ENOMEM;
2810
2811         priority = ROCKER_PRIORITY_ACL_NORMAL;
2812         if (eth_dst && eth_dst_mask) {
2813                 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2814                         priority = ROCKER_PRIORITY_ACL_DFLT;
2815                 else if (is_link_local_ether_addr(eth_dst))
2816                         priority = ROCKER_PRIORITY_ACL_CTRL;
2817         }
2818
2819         entry->key.priority = priority;
2820         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2821         entry->key.acl.in_pport = in_pport;
2822         entry->key.acl.in_pport_mask = in_pport_mask;
2823
2824         if (eth_src)
2825                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2826         if (eth_src_mask)
2827                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2828         if (eth_dst)
2829                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2830         if (eth_dst_mask)
2831                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2832
2833         entry->key.acl.eth_type = eth_type;
2834         entry->key.acl.vlan_id = vlan_id;
2835         entry->key.acl.vlan_id_mask = vlan_id_mask;
2836         entry->key.acl.ip_proto = ip_proto;
2837         entry->key.acl.ip_proto_mask = ip_proto_mask;
2838         entry->key.acl.ip_tos = ip_tos;
2839         entry->key.acl.ip_tos_mask = ip_tos_mask;
2840         entry->key.acl.group_id = group_id;
2841
2842         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2843 }
2844
2845 static struct rocker_group_tbl_entry *
2846 rocker_group_tbl_find(const struct rocker *rocker,
2847                       const struct rocker_group_tbl_entry *match)
2848 {
2849         struct rocker_group_tbl_entry *found;
2850
2851         hash_for_each_possible(rocker->group_tbl, found,
2852                                entry, match->group_id) {
2853                 if (found->group_id == match->group_id)
2854                         return found;
2855         }
2856
2857         return NULL;
2858 }
2859
2860 static void rocker_group_tbl_entry_free(struct switchdev_trans *trans,
2861                                         struct rocker_group_tbl_entry *entry)
2862 {
2863         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2864         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2865         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2866                 rocker_kfree(trans, entry->group_ids);
2867                 break;
2868         default:
2869                 break;
2870         }
2871         rocker_kfree(trans, entry);
2872 }
2873
2874 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2875                                 struct switchdev_trans *trans, int flags,
2876                                 struct rocker_group_tbl_entry *match)
2877 {
2878         struct rocker *rocker = rocker_port->rocker;
2879         struct rocker_group_tbl_entry *found;
2880         unsigned long lock_flags;
2881
2882         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2883
2884         found = rocker_group_tbl_find(rocker, match);
2885
2886         if (found) {
2887                 if (!switchdev_trans_ph_prepare(trans))
2888                         hash_del(&found->entry);
2889                 rocker_group_tbl_entry_free(trans, found);
2890                 found = match;
2891                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2892         } else {
2893                 found = match;
2894                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2895         }
2896
2897         if (!switchdev_trans_ph_prepare(trans))
2898                 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2899
2900         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2901
2902         if (!switchdev_trans_ph_prepare(trans))
2903                 return rocker_cmd_exec(rocker_port, flags,
2904                                        rocker_cmd_group_tbl_add,
2905                                        found, NULL, NULL);
2906         return 0;
2907 }
2908
2909 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2910                                 struct switchdev_trans *trans, int flags,
2911                                 struct rocker_group_tbl_entry *match)
2912 {
2913         struct rocker *rocker = rocker_port->rocker;
2914         struct rocker_group_tbl_entry *found;
2915         unsigned long lock_flags;
2916         int err = 0;
2917
2918         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2919
2920         found = rocker_group_tbl_find(rocker, match);
2921
2922         if (found) {
2923                 if (!switchdev_trans_ph_prepare(trans))
2924                         hash_del(&found->entry);
2925                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2926         }
2927
2928         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2929
2930         rocker_group_tbl_entry_free(trans, match);
2931
2932         if (found) {
2933                 if (!switchdev_trans_ph_prepare(trans))
2934                         err = rocker_cmd_exec(rocker_port, flags,
2935                                               rocker_cmd_group_tbl_del,
2936                                               found, NULL, NULL);
2937                 rocker_group_tbl_entry_free(trans, found);
2938         }
2939
2940         return err;
2941 }
2942
2943 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2944                                struct switchdev_trans *trans, int flags,
2945                                struct rocker_group_tbl_entry *entry)
2946 {
2947         if (flags & ROCKER_OP_FLAG_REMOVE)
2948                 return rocker_group_tbl_del(rocker_port, trans, flags, entry);
2949         else
2950                 return rocker_group_tbl_add(rocker_port, trans, flags, entry);
2951 }
2952
2953 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2954                                      struct switchdev_trans *trans, int flags,
2955                                      __be16 vlan_id, u32 out_pport,
2956                                      int pop_vlan)
2957 {
2958         struct rocker_group_tbl_entry *entry;
2959
2960         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2961         if (!entry)
2962                 return -ENOMEM;
2963
2964         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2965         entry->l2_interface.pop_vlan = pop_vlan;
2966
2967         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2968 }
2969
2970 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2971                                    struct switchdev_trans *trans,
2972                                    int flags, u8 group_count,
2973                                    const u32 *group_ids, u32 group_id)
2974 {
2975         struct rocker_group_tbl_entry *entry;
2976
2977         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2978         if (!entry)
2979                 return -ENOMEM;
2980
2981         entry->group_id = group_id;
2982         entry->group_count = group_count;
2983
2984         entry->group_ids = rocker_kcalloc(trans, flags,
2985                                           group_count, sizeof(u32));
2986         if (!entry->group_ids) {
2987                 rocker_kfree(trans, entry);
2988                 return -ENOMEM;
2989         }
2990         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2991
2992         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2993 }
2994
2995 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2996                                  struct switchdev_trans *trans, int flags,
2997                                  __be16 vlan_id, u8 group_count,
2998                                  const u32 *group_ids, u32 group_id)
2999 {
3000         return rocker_group_l2_fan_out(rocker_port, trans, flags,
3001                                        group_count, group_ids,
3002                                        group_id);
3003 }
3004
3005 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
3006                                    struct switchdev_trans *trans, int flags,
3007                                    u32 index, const u8 *src_mac, const u8 *dst_mac,
3008                                    __be16 vlan_id, bool ttl_check, u32 pport)
3009 {
3010         struct rocker_group_tbl_entry *entry;
3011
3012         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
3013         if (!entry)
3014                 return -ENOMEM;
3015
3016         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
3017         if (src_mac)
3018                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
3019         if (dst_mac)
3020                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
3021         entry->l3_unicast.vlan_id = vlan_id;
3022         entry->l3_unicast.ttl_check = ttl_check;
3023         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
3024
3025         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
3026 }
3027
3028 static struct rocker_neigh_tbl_entry *
3029 rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
3030 {
3031         struct rocker_neigh_tbl_entry *found;
3032
3033         hash_for_each_possible(rocker->neigh_tbl, found,
3034                                entry, be32_to_cpu(ip_addr))
3035                 if (found->ip_addr == ip_addr)
3036                         return found;
3037
3038         return NULL;
3039 }
3040
3041 static void _rocker_neigh_add(struct rocker *rocker,
3042                               struct switchdev_trans *trans,
3043                               struct rocker_neigh_tbl_entry *entry)
3044 {
3045         if (!switchdev_trans_ph_commit(trans))
3046                 entry->index = rocker->neigh_tbl_next_index++;
3047         if (switchdev_trans_ph_prepare(trans))
3048                 return;
3049         entry->ref_count++;
3050         hash_add(rocker->neigh_tbl, &entry->entry,
3051                  be32_to_cpu(entry->ip_addr));
3052 }
3053
3054 static void _rocker_neigh_del(struct switchdev_trans *trans,
3055                               struct rocker_neigh_tbl_entry *entry)
3056 {
3057         if (switchdev_trans_ph_prepare(trans))
3058                 return;
3059         if (--entry->ref_count == 0) {
3060                 hash_del(&entry->entry);
3061                 rocker_kfree(trans, entry);
3062         }
3063 }
3064
3065 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
3066                                  struct switchdev_trans *trans,
3067                                  const u8 *eth_dst, bool ttl_check)
3068 {
3069         if (eth_dst) {
3070                 ether_addr_copy(entry->eth_dst, eth_dst);
3071                 entry->ttl_check = ttl_check;
3072         } else if (!switchdev_trans_ph_prepare(trans)) {
3073                 entry->ref_count++;
3074         }
3075 }
3076
3077 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
3078                                   struct switchdev_trans *trans,
3079                                   int flags, __be32 ip_addr, const u8 *eth_dst)
3080 {
3081         struct rocker *rocker = rocker_port->rocker;
3082         struct rocker_neigh_tbl_entry *entry;
3083         struct rocker_neigh_tbl_entry *found;
3084         unsigned long lock_flags;
3085         __be16 eth_type = htons(ETH_P_IP);
3086         enum rocker_of_dpa_table_id goto_tbl =
3087                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3088         u32 group_id;
3089         u32 priority = 0;
3090         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3091         bool updating;
3092         bool removing;
3093         int err = 0;
3094
3095         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
3096         if (!entry)
3097                 return -ENOMEM;
3098
3099         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3100
3101         found = rocker_neigh_tbl_find(rocker, ip_addr);
3102
3103         updating = found && adding;
3104         removing = found && !adding;
3105         adding = !found && adding;
3106
3107         if (adding) {
3108                 entry->ip_addr = ip_addr;
3109                 entry->dev = rocker_port->dev;
3110                 ether_addr_copy(entry->eth_dst, eth_dst);
3111                 entry->ttl_check = true;
3112                 _rocker_neigh_add(rocker, trans, entry);
3113         } else if (removing) {
3114                 memcpy(entry, found, sizeof(*entry));
3115                 _rocker_neigh_del(trans, found);
3116         } else if (updating) {
3117                 _rocker_neigh_update(found, trans, eth_dst, true);
3118                 memcpy(entry, found, sizeof(*entry));
3119         } else {
3120                 err = -ENOENT;
3121         }
3122
3123         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3124
3125         if (err)
3126                 goto err_out;
3127
3128         /* For each active neighbor, we have an L3 unicast group and
3129          * a /32 route to the neighbor, which uses the L3 unicast
3130          * group.  The L3 unicast group can also be referred to by
3131          * other routes' nexthops.
3132          */
3133
3134         err = rocker_group_l3_unicast(rocker_port, trans, flags,
3135                                       entry->index,
3136                                       rocker_port->dev->dev_addr,
3137                                       entry->eth_dst,
3138                                       rocker_port->internal_vlan_id,
3139                                       entry->ttl_check,
3140                                       rocker_port->pport);
3141         if (err) {
3142                 netdev_err(rocker_port->dev,
3143                            "Error (%d) L3 unicast group index %d\n",
3144                            err, entry->index);
3145                 goto err_out;
3146         }
3147
3148         if (adding || removing) {
3149                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3150                 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3151                                                      eth_type, ip_addr,
3152                                                      inet_make_mask(32),
3153                                                      priority, goto_tbl,
3154                                                      group_id, flags);
3155
3156                 if (err)
3157                         netdev_err(rocker_port->dev,
3158                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3159                                    err, &entry->ip_addr, group_id);
3160         }
3161
3162 err_out:
3163         if (!adding)
3164                 rocker_kfree(trans, entry);
3165
3166         return err;
3167 }
3168
3169 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3170                                     struct switchdev_trans *trans,
3171                                     __be32 ip_addr)
3172 {
3173         struct net_device *dev = rocker_port->dev;
3174         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3175         int err = 0;
3176
3177         if (!n) {
3178                 n = neigh_create(&arp_tbl, &ip_addr, dev);
3179                 if (IS_ERR(n))
3180                         return IS_ERR(n);
3181         }
3182
3183         /* If the neigh is already resolved, then go ahead and
3184          * install the entry, otherwise start the ARP process to
3185          * resolve the neigh.
3186          */
3187
3188         if (n->nud_state & NUD_VALID)
3189                 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3190                                              ip_addr, n->ha);
3191         else
3192                 neigh_event_send(n, NULL);
3193
3194         neigh_release(n);
3195         return err;
3196 }
3197
3198 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3199                                struct switchdev_trans *trans, int flags,
3200                                __be32 ip_addr, u32 *index)
3201 {
3202         struct rocker *rocker = rocker_port->rocker;
3203         struct rocker_neigh_tbl_entry *entry;
3204         struct rocker_neigh_tbl_entry *found;
3205         unsigned long lock_flags;
3206         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3207         bool updating;
3208         bool removing;
3209         bool resolved = true;
3210         int err = 0;
3211
3212         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
3213         if (!entry)
3214                 return -ENOMEM;
3215
3216         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3217
3218         found = rocker_neigh_tbl_find(rocker, ip_addr);
3219         if (found)
3220                 *index = found->index;
3221
3222         updating = found && adding;
3223         removing = found && !adding;
3224         adding = !found && adding;
3225
3226         if (adding) {
3227                 entry->ip_addr = ip_addr;
3228                 entry->dev = rocker_port->dev;
3229                 _rocker_neigh_add(rocker, trans, entry);
3230                 *index = entry->index;
3231                 resolved = false;
3232         } else if (removing) {
3233                 _rocker_neigh_del(trans, found);
3234         } else if (updating) {
3235                 _rocker_neigh_update(found, trans, NULL, false);
3236                 resolved = !is_zero_ether_addr(found->eth_dst);
3237         } else {
3238                 err = -ENOENT;
3239         }
3240
3241         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3242
3243         if (!adding)
3244                 rocker_kfree(trans, entry);
3245
3246         if (err)
3247                 return err;
3248
3249         /* Resolved means neigh ip_addr is resolved to neigh mac. */
3250
3251         if (!resolved)
3252                 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3253
3254         return err;
3255 }
3256
3257 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3258                                         struct switchdev_trans *trans,
3259                                         int flags, __be16 vlan_id)
3260 {
3261         struct rocker_port *p;
3262         const struct rocker *rocker = rocker_port->rocker;
3263         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3264         u32 *group_ids;
3265         u8 group_count = 0;
3266         int err = 0;
3267         int i;
3268
3269         group_ids = rocker_kcalloc(trans, flags,
3270                                    rocker->port_count, sizeof(u32));
3271         if (!group_ids)
3272                 return -ENOMEM;
3273
3274         /* Adjust the flood group for this VLAN.  The flood group
3275          * references an L2 interface group for each port in this
3276          * VLAN.
3277          */
3278
3279         for (i = 0; i < rocker->port_count; i++) {
3280                 p = rocker->ports[i];
3281                 if (!p)
3282                         continue;
3283                 if (!rocker_port_is_bridged(p))
3284                         continue;
3285                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3286                         group_ids[group_count++] =
3287                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3288                 }
3289         }
3290
3291         /* If there are no bridged ports in this VLAN, we're done */
3292         if (group_count == 0)
3293                 goto no_ports_in_vlan;
3294
3295         err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3296                                     group_count, group_ids, group_id);
3297         if (err)
3298                 netdev_err(rocker_port->dev,
3299                            "Error (%d) port VLAN l2 flood group\n", err);
3300
3301 no_ports_in_vlan:
3302         rocker_kfree(trans, group_ids);
3303         return err;
3304 }
3305
3306 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3307                                       struct switchdev_trans *trans, int flags,
3308                                       __be16 vlan_id, bool pop_vlan)
3309 {
3310         const struct rocker *rocker = rocker_port->rocker;
3311         struct rocker_port *p;
3312         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3313         u32 out_pport;
3314         int ref = 0;
3315         int err;
3316         int i;
3317
3318         /* An L2 interface group for this port in this VLAN, but
3319          * only when port STP state is LEARNING|FORWARDING.
3320          */
3321
3322         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3323             rocker_port->stp_state == BR_STATE_FORWARDING) {
3324                 out_pport = rocker_port->pport;
3325                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3326                                                 vlan_id, out_pport, pop_vlan);
3327                 if (err) {
3328                         netdev_err(rocker_port->dev,
3329                                    "Error (%d) port VLAN l2 group for pport %d\n",
3330                                    err, out_pport);
3331                         return err;
3332                 }
3333         }
3334
3335         /* An L2 interface group for this VLAN to CPU port.
3336          * Add when first port joins this VLAN and destroy when
3337          * last port leaves this VLAN.
3338          */
3339
3340         for (i = 0; i < rocker->port_count; i++) {
3341                 p = rocker->ports[i];
3342                 if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
3343                         ref++;
3344         }
3345
3346         if ((!adding || ref != 1) && (adding || ref != 0))
3347                 return 0;
3348
3349         out_pport = 0;
3350         err = rocker_group_l2_interface(rocker_port, trans, flags,
3351                                         vlan_id, out_pport, pop_vlan);
3352         if (err) {
3353                 netdev_err(rocker_port->dev,
3354                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3355                 return err;
3356         }
3357
3358         return 0;
3359 }
3360
3361 static struct rocker_ctrl {
3362         const u8 *eth_dst;
3363         const u8 *eth_dst_mask;
3364         __be16 eth_type;
3365         bool acl;
3366         bool bridge;
3367         bool term;
3368         bool copy_to_cpu;
3369 } rocker_ctrls[] = {
3370         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3371                 /* pass link local multicast pkts up to CPU for filtering */
3372                 .eth_dst = ll_mac,
3373                 .eth_dst_mask = ll_mask,
3374                 .acl = true,
3375         },
3376         [ROCKER_CTRL_LOCAL_ARP] = {
3377                 /* pass local ARP pkts up to CPU */
3378                 .eth_dst = zero_mac,
3379                 .eth_dst_mask = zero_mac,
3380                 .eth_type = htons(ETH_P_ARP),
3381                 .acl = true,
3382         },
3383         [ROCKER_CTRL_IPV4_MCAST] = {
3384                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3385                 .eth_dst = ipv4_mcast,
3386                 .eth_dst_mask = ipv4_mask,
3387                 .eth_type = htons(ETH_P_IP),
3388                 .term  = true,
3389                 .copy_to_cpu = true,
3390         },
3391         [ROCKER_CTRL_IPV6_MCAST] = {
3392                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3393                 .eth_dst = ipv6_mcast,
3394                 .eth_dst_mask = ipv6_mask,
3395                 .eth_type = htons(ETH_P_IPV6),
3396                 .term  = true,
3397                 .copy_to_cpu = true,
3398         },
3399         [ROCKER_CTRL_DFLT_BRIDGING] = {
3400                 /* flood any pkts on vlan */
3401                 .bridge = true,
3402                 .copy_to_cpu = true,
3403         },
3404         [ROCKER_CTRL_DFLT_OVS] = {
3405                 /* pass all pkts up to CPU */
3406                 .eth_dst = zero_mac,
3407                 .eth_dst_mask = zero_mac,
3408                 .acl = true,
3409         },
3410 };
3411
3412 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3413                                      struct switchdev_trans *trans, int flags,
3414                                      const struct rocker_ctrl *ctrl, __be16 vlan_id)
3415 {
3416         u32 in_pport = rocker_port->pport;
3417         u32 in_pport_mask = 0xffffffff;
3418         u32 out_pport = 0;
3419         const u8 *eth_src = NULL;
3420         const u8 *eth_src_mask = NULL;
3421         __be16 vlan_id_mask = htons(0xffff);
3422         u8 ip_proto = 0;
3423         u8 ip_proto_mask = 0;
3424         u8 ip_tos = 0;
3425         u8 ip_tos_mask = 0;
3426         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3427         int err;
3428
3429         err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3430                                   in_pport, in_pport_mask,
3431                                   eth_src, eth_src_mask,
3432                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3433                                   ctrl->eth_type,
3434                                   vlan_id, vlan_id_mask,
3435                                   ip_proto, ip_proto_mask,
3436                                   ip_tos, ip_tos_mask,
3437                                   group_id);
3438
3439         if (err)
3440                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3441
3442         return err;
3443 }
3444
3445 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3446                                         struct switchdev_trans *trans,
3447                                         int flags,
3448                                         const struct rocker_ctrl *ctrl,
3449                                         __be16 vlan_id)
3450 {
3451         enum rocker_of_dpa_table_id goto_tbl =
3452                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3453         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3454         u32 tunnel_id = 0;
3455         int err;
3456
3457         if (!rocker_port_is_bridged(rocker_port))
3458                 return 0;
3459
3460         err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3461                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3462                                      vlan_id, tunnel_id,
3463                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3464
3465         if (err)
3466                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3467
3468         return err;
3469 }
3470
3471 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3472                                       struct switchdev_trans *trans, int flags,
3473                                       const struct rocker_ctrl *ctrl, __be16 vlan_id)
3474 {
3475         u32 in_pport_mask = 0xffffffff;
3476         __be16 vlan_id_mask = htons(0xffff);
3477         int err;
3478
3479         if (ntohs(vlan_id) == 0)
3480                 vlan_id = rocker_port->internal_vlan_id;
3481
3482         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3483                                        rocker_port->pport, in_pport_mask,
3484                                        ctrl->eth_type, ctrl->eth_dst,
3485                                        ctrl->eth_dst_mask, vlan_id,
3486                                        vlan_id_mask, ctrl->copy_to_cpu,
3487                                        flags);
3488
3489         if (err)
3490                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3491
3492         return err;
3493 }
3494
3495 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3496                                  struct switchdev_trans *trans, int flags,
3497                                  const struct rocker_ctrl *ctrl, __be16 vlan_id)
3498 {
3499         if (ctrl->acl)
3500                 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3501                                                  ctrl, vlan_id);
3502         if (ctrl->bridge)
3503                 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3504                                                     ctrl, vlan_id);
3505
3506         if (ctrl->term)
3507                 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3508                                                   ctrl, vlan_id);
3509
3510         return -EOPNOTSUPP;
3511 }
3512
3513 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3514                                      struct switchdev_trans *trans, int flags,
3515                                      __be16 vlan_id)
3516 {
3517         int err = 0;
3518         int i;
3519
3520         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3521                 if (rocker_port->ctrls[i]) {
3522                         err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3523                                                     &rocker_ctrls[i], vlan_id);
3524                         if (err)
3525                                 return err;
3526                 }
3527         }
3528
3529         return err;
3530 }
3531
3532 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3533                             struct switchdev_trans *trans, int flags,
3534                             const struct rocker_ctrl *ctrl)
3535 {
3536         u16 vid;
3537         int err = 0;
3538
3539         for (vid = 1; vid < VLAN_N_VID; vid++) {
3540                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3541                         continue;
3542                 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3543                                             ctrl, htons(vid));
3544                 if (err)
3545                         break;
3546         }
3547
3548         return err;
3549 }
3550
3551 static int rocker_port_vlan(struct rocker_port *rocker_port,
3552                             struct switchdev_trans *trans, int flags, u16 vid)
3553 {
3554         enum rocker_of_dpa_table_id goto_tbl =
3555                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3556         u32 in_pport = rocker_port->pport;
3557         __be16 vlan_id = htons(vid);
3558         __be16 vlan_id_mask = htons(0xffff);
3559         __be16 internal_vlan_id;
3560         bool untagged;
3561         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3562         int err;
3563
3564         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3565
3566         if (adding && test_bit(ntohs(internal_vlan_id),
3567                                rocker_port->vlan_bitmap))
3568                 return 0; /* already added */
3569         else if (!adding && !test_bit(ntohs(internal_vlan_id),
3570                                       rocker_port->vlan_bitmap))
3571                 return 0; /* already removed */
3572
3573         change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3574
3575         if (adding) {
3576                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3577                                                 internal_vlan_id);
3578                 if (err) {
3579                         netdev_err(rocker_port->dev,
3580                                    "Error (%d) port ctrl vlan add\n", err);
3581                         goto err_out;
3582                 }
3583         }
3584
3585         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3586                                          internal_vlan_id, untagged);
3587         if (err) {
3588                 netdev_err(rocker_port->dev,
3589                            "Error (%d) port VLAN l2 groups\n", err);
3590                 goto err_out;
3591         }
3592
3593         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3594                                            internal_vlan_id);
3595         if (err) {
3596                 netdev_err(rocker_port->dev,
3597                            "Error (%d) port VLAN l2 flood group\n", err);
3598                 goto err_out;
3599         }
3600
3601         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3602                                    in_pport, vlan_id, vlan_id_mask,
3603                                    goto_tbl, untagged, internal_vlan_id);
3604         if (err)
3605                 netdev_err(rocker_port->dev,
3606                            "Error (%d) port VLAN table\n", err);
3607
3608 err_out:
3609         if (switchdev_trans_ph_prepare(trans))
3610                 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3611
3612         return err;
3613 }
3614
3615 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3616                               struct switchdev_trans *trans, int flags)
3617 {
3618         enum rocker_of_dpa_table_id goto_tbl;
3619         u32 in_pport;
3620         u32 in_pport_mask;
3621         int err;
3622
3623         /* Normal Ethernet Frames.  Matches pkts from any local physical
3624          * ports.  Goto VLAN tbl.
3625          */
3626
3627         in_pport = 0;
3628         in_pport_mask = 0xffff0000;
3629         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3630
3631         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3632                                       in_pport, in_pport_mask,
3633                                       goto_tbl);
3634         if (err)
3635                 netdev_err(rocker_port->dev,
3636                            "Error (%d) ingress port table entry\n", err);
3637
3638         return err;
3639 }
3640
3641 struct rocker_fdb_learn_work {
3642         struct work_struct work;
3643         struct rocker_port *rocker_port;
3644         struct switchdev_trans *trans;
3645         int flags;
3646         u8 addr[ETH_ALEN];
3647         u16 vid;
3648 };
3649
3650 static void rocker_port_fdb_learn_work(struct work_struct *work)
3651 {
3652         const struct rocker_fdb_learn_work *lw =
3653                 container_of(work, struct rocker_fdb_learn_work, work);
3654         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3655         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3656         struct switchdev_notifier_fdb_info info;
3657
3658         info.addr = lw->addr;
3659         info.vid = lw->vid;
3660
3661         rtnl_lock();
3662         if (learned && removing)
3663                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3664                                          lw->rocker_port->dev, &info.info);
3665         else if (learned && !removing)
3666                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3667                                          lw->rocker_port->dev, &info.info);
3668         rtnl_unlock();
3669
3670         rocker_kfree(lw->trans, work);
3671 }
3672
3673 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3674                                  struct switchdev_trans *trans, int flags,
3675                                  const u8 *addr, __be16 vlan_id)
3676 {
3677         struct rocker_fdb_learn_work *lw;
3678         enum rocker_of_dpa_table_id goto_tbl =
3679                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3680         u32 out_pport = rocker_port->pport;
3681         u32 tunnel_id = 0;
3682         u32 group_id = ROCKER_GROUP_NONE;
3683         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3684         bool copy_to_cpu = false;
3685         int err;
3686
3687         if (rocker_port_is_bridged(rocker_port))
3688                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3689
3690         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3691                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3692                                              NULL, vlan_id, tunnel_id, goto_tbl,
3693                                              group_id, copy_to_cpu);
3694                 if (err)
3695                         return err;
3696         }
3697
3698         if (!syncing)
3699                 return 0;
3700
3701         if (!rocker_port_is_bridged(rocker_port))
3702                 return 0;
3703
3704         lw = rocker_kzalloc(trans, flags, sizeof(*lw));
3705         if (!lw)
3706                 return -ENOMEM;
3707
3708         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3709
3710         lw->rocker_port = rocker_port;
3711         lw->trans = trans;
3712         lw->flags = flags;
3713         ether_addr_copy(lw->addr, addr);
3714         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3715
3716         if (switchdev_trans_ph_prepare(trans))
3717                 rocker_kfree(trans, lw);
3718         else
3719                 schedule_work(&lw->work);
3720
3721         return 0;
3722 }
3723
3724 static struct rocker_fdb_tbl_entry *
3725 rocker_fdb_tbl_find(const struct rocker *rocker,
3726                     const struct rocker_fdb_tbl_entry *match)
3727 {
3728         struct rocker_fdb_tbl_entry *found;
3729
3730         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3731                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3732                         return found;
3733
3734         return NULL;
3735 }
3736
3737 static int rocker_port_fdb(struct rocker_port *rocker_port,
3738                            struct switchdev_trans *trans,
3739                            const unsigned char *addr,
3740                            __be16 vlan_id, int flags)
3741 {
3742         struct rocker *rocker = rocker_port->rocker;
3743         struct rocker_fdb_tbl_entry *fdb;
3744         struct rocker_fdb_tbl_entry *found;
3745         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3746         unsigned long lock_flags;
3747
3748         fdb = rocker_kzalloc(trans, flags, sizeof(*fdb));
3749         if (!fdb)
3750                 return -ENOMEM;
3751
3752         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3753         fdb->touched = jiffies;
3754         fdb->key.rocker_port = rocker_port;
3755         ether_addr_copy(fdb->key.addr, addr);
3756         fdb->key.vlan_id = vlan_id;
3757         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3758
3759         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3760
3761         found = rocker_fdb_tbl_find(rocker, fdb);
3762
3763         if (found) {
3764                 found->touched = jiffies;
3765                 if (removing) {
3766                         rocker_kfree(trans, fdb);
3767                         if (!switchdev_trans_ph_prepare(trans))
3768                                 hash_del(&found->entry);
3769                 }
3770         } else if (!removing) {
3771                 if (!switchdev_trans_ph_prepare(trans))
3772                         hash_add(rocker->fdb_tbl, &fdb->entry,
3773                                  fdb->key_crc32);
3774         }
3775
3776         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3777
3778         /* Check if adding and already exists, or removing and can't find */
3779         if (!found != !removing) {
3780                 rocker_kfree(trans, fdb);
3781                 if (!found && removing)
3782                         return 0;
3783                 /* Refreshing existing to update aging timers */
3784                 flags |= ROCKER_OP_FLAG_REFRESH;
3785         }
3786
3787         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3788 }
3789
3790 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3791                                  struct switchdev_trans *trans, int flags)
3792 {
3793         struct rocker *rocker = rocker_port->rocker;
3794         struct rocker_fdb_tbl_entry *found;
3795         unsigned long lock_flags;
3796         struct hlist_node *tmp;
3797         int bkt;
3798         int err = 0;
3799
3800         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3801             rocker_port->stp_state == BR_STATE_FORWARDING)
3802                 return 0;
3803
3804         flags |= ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3805
3806         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3807
3808         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3809                 if (found->key.rocker_port != rocker_port)
3810                         continue;
3811                 if (!found->learned)
3812                         continue;
3813                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3814                                             found->key.addr,
3815                                             found->key.vlan_id);
3816                 if (err)
3817                         goto err_out;
3818                 if (!switchdev_trans_ph_prepare(trans))
3819                         hash_del(&found->entry);
3820         }
3821
3822 err_out:
3823         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3824
3825         return err;
3826 }
3827
3828 static void rocker_fdb_cleanup(unsigned long data)
3829 {
3830         struct rocker *rocker = (struct rocker *)data;
3831         struct rocker_port *rocker_port;
3832         struct rocker_fdb_tbl_entry *entry;
3833         struct hlist_node *tmp;
3834         unsigned long next_timer = jiffies + BR_MIN_AGEING_TIME;
3835         unsigned long expires;
3836         unsigned long lock_flags;
3837         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE |
3838                     ROCKER_OP_FLAG_LEARNED;
3839         int bkt;
3840
3841         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3842
3843         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, entry, entry) {
3844                 if (!entry->learned)
3845                         continue;
3846                 rocker_port = entry->key.rocker_port;
3847                 expires = entry->touched + rocker_port->ageing_time;
3848                 if (time_before_eq(expires, jiffies)) {
3849                         rocker_port_fdb_learn(rocker_port, NULL,
3850                                               flags, entry->key.addr,
3851                                               entry->key.vlan_id);
3852                         hash_del(&entry->entry);
3853                 } else if (time_before(expires, next_timer)) {
3854                         next_timer = expires;
3855                 }
3856         }
3857
3858         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3859
3860         mod_timer(&rocker->fdb_cleanup_timer, round_jiffies_up(next_timer));
3861 }
3862
3863 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3864                                   struct switchdev_trans *trans, int flags,
3865                                   __be16 vlan_id)
3866 {
3867         u32 in_pport_mask = 0xffffffff;
3868         __be16 eth_type;
3869         const u8 *dst_mac_mask = ff_mac;
3870         __be16 vlan_id_mask = htons(0xffff);
3871         bool copy_to_cpu = false;
3872         int err;
3873
3874         if (ntohs(vlan_id) == 0)
3875                 vlan_id = rocker_port->internal_vlan_id;
3876
3877         eth_type = htons(ETH_P_IP);
3878         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3879                                        rocker_port->pport, in_pport_mask,
3880                                        eth_type, rocker_port->dev->dev_addr,
3881                                        dst_mac_mask, vlan_id, vlan_id_mask,
3882                                        copy_to_cpu, flags);
3883         if (err)
3884                 return err;
3885
3886         eth_type = htons(ETH_P_IPV6);
3887         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3888                                        rocker_port->pport, in_pport_mask,
3889                                        eth_type, rocker_port->dev->dev_addr,
3890                                        dst_mac_mask, vlan_id, vlan_id_mask,
3891                                        copy_to_cpu, flags);
3892
3893         return err;
3894 }
3895
3896 static int rocker_port_fwding(struct rocker_port *rocker_port,
3897                               struct switchdev_trans *trans, int flags)
3898 {
3899         bool pop_vlan;
3900         u32 out_pport;
3901         __be16 vlan_id;
3902         u16 vid;
3903         int err;
3904
3905         /* Port will be forwarding-enabled if its STP state is LEARNING
3906          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3907          * port STP state.  Use L2 interface group on port VLANs as a way
3908          * to toggle port forwarding: if forwarding is disabled, L2
3909          * interface group will not exist.
3910          */
3911
3912         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3913             rocker_port->stp_state != BR_STATE_FORWARDING)
3914                 flags |= ROCKER_OP_FLAG_REMOVE;
3915
3916         out_pport = rocker_port->pport;
3917         for (vid = 1; vid < VLAN_N_VID; vid++) {
3918                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3919                         continue;
3920                 vlan_id = htons(vid);
3921                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3922                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3923                                                 vlan_id, out_pport, pop_vlan);
3924                 if (err) {
3925                         netdev_err(rocker_port->dev,
3926                                    "Error (%d) port VLAN l2 group for pport %d\n",
3927                                    err, out_pport);
3928                         return err;
3929                 }
3930         }
3931
3932         return 0;
3933 }
3934
3935 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3936                                   struct switchdev_trans *trans, int flags,
3937                                   u8 state)
3938 {
3939         bool want[ROCKER_CTRL_MAX] = { 0, };
3940         bool prev_ctrls[ROCKER_CTRL_MAX];
3941         u8 uninitialized_var(prev_state);
3942         int err;
3943         int i;
3944
3945         if (switchdev_trans_ph_prepare(trans)) {
3946                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3947                 prev_state = rocker_port->stp_state;
3948         }
3949
3950         if (rocker_port->stp_state == state)
3951                 return 0;
3952
3953         rocker_port->stp_state = state;
3954
3955         switch (state) {
3956         case BR_STATE_DISABLED:
3957                 /* port is completely disabled */
3958                 break;
3959         case BR_STATE_LISTENING:
3960         case BR_STATE_BLOCKING:
3961                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3962                 break;
3963         case BR_STATE_LEARNING:
3964         case BR_STATE_FORWARDING:
3965                 if (!rocker_port_is_ovsed(rocker_port))
3966                         want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3967                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3968                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3969                 if (rocker_port_is_bridged(rocker_port))
3970                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3971                 else if (rocker_port_is_ovsed(rocker_port))
3972                         want[ROCKER_CTRL_DFLT_OVS] = true;
3973                 else
3974                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3975                 break;
3976         }
3977
3978         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3979                 if (want[i] != rocker_port->ctrls[i]) {
3980                         int ctrl_flags = flags |
3981                                          (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3982                         err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
3983                                                &rocker_ctrls[i]);
3984                         if (err)
3985                                 goto err_out;
3986                         rocker_port->ctrls[i] = want[i];
3987                 }
3988         }
3989
3990         err = rocker_port_fdb_flush(rocker_port, trans, flags);
3991         if (err)
3992                 goto err_out;
3993
3994         err = rocker_port_fwding(rocker_port, trans, flags);
3995
3996 err_out:
3997         if (switchdev_trans_ph_prepare(trans)) {
3998                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3999                 rocker_port->stp_state = prev_state;
4000         }
4001
4002         return err;
4003 }
4004
4005 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
4006                                   struct switchdev_trans *trans, int flags)
4007 {
4008         if (rocker_port_is_bridged(rocker_port))
4009                 /* bridge STP will enable port */
4010                 return 0;
4011
4012         /* port is not bridged, so simulate going to FORWARDING state */
4013         return rocker_port_stp_update(rocker_port, trans, flags,
4014                                       BR_STATE_FORWARDING);
4015 }
4016
4017 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
4018                                    struct switchdev_trans *trans, int flags)
4019 {
4020         if (rocker_port_is_bridged(rocker_port))
4021                 /* bridge STP will disable port */
4022                 return 0;
4023
4024         /* port is not bridged, so simulate going to DISABLED state */
4025         return rocker_port_stp_update(rocker_port, trans, flags,
4026                                       BR_STATE_DISABLED);
4027 }
4028
4029 static struct rocker_internal_vlan_tbl_entry *
4030 rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
4031 {
4032         struct rocker_internal_vlan_tbl_entry *found;
4033
4034         hash_for_each_possible(rocker->internal_vlan_tbl, found,
4035                                entry, ifindex) {
4036                 if (found->ifindex == ifindex)
4037                         return found;
4038         }
4039
4040         return NULL;
4041 }
4042
4043 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
4044                                                int ifindex)
4045 {
4046         struct rocker *rocker = rocker_port->rocker;
4047         struct rocker_internal_vlan_tbl_entry *entry;
4048         struct rocker_internal_vlan_tbl_entry *found;
4049         unsigned long lock_flags;
4050         int i;
4051
4052         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
4053         if (!entry)
4054                 return 0;
4055
4056         entry->ifindex = ifindex;
4057
4058         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
4059
4060         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
4061         if (found) {
4062                 kfree(entry);
4063                 goto found;
4064         }
4065
4066         found = entry;
4067         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
4068
4069         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
4070                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
4071                         continue;
4072                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
4073                 goto found;
4074         }
4075
4076         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
4077
4078 found:
4079         found->ref_count++;
4080         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
4081
4082         return found->vlan_id;
4083 }
4084
4085 static void
4086 rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
4087                                  int ifindex)
4088 {
4089         struct rocker *rocker = rocker_port->rocker;
4090         struct rocker_internal_vlan_tbl_entry *found;
4091         unsigned long lock_flags;
4092         unsigned long bit;
4093
4094         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
4095
4096         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
4097         if (!found) {
4098                 netdev_err(rocker_port->dev,
4099                            "ifindex (%d) not found in internal VLAN tbl\n",
4100                            ifindex);
4101                 goto not_found;
4102         }
4103
4104         if (--found->ref_count <= 0) {
4105                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
4106                 clear_bit(bit, rocker->internal_vlan_bitmap);
4107                 hash_del(&found->entry);
4108                 kfree(found);
4109         }
4110
4111 not_found:
4112         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
4113 }
4114
4115 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
4116                                 struct switchdev_trans *trans, __be32 dst,
4117                                 int dst_len, const struct fib_info *fi,
4118                                 u32 tb_id, int flags)
4119 {
4120         const struct fib_nh *nh;
4121         __be16 eth_type = htons(ETH_P_IP);
4122         __be32 dst_mask = inet_make_mask(dst_len);
4123         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
4124         u32 priority = fi->fib_priority;
4125         enum rocker_of_dpa_table_id goto_tbl =
4126                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
4127         u32 group_id;
4128         bool nh_on_port;
4129         bool has_gw;
4130         u32 index;
4131         int err;
4132
4133         /* XXX support ECMP */
4134
4135         nh = fi->fib_nh;
4136         nh_on_port = (fi->fib_dev == rocker_port->dev);
4137         has_gw = !!nh->nh_gw;
4138
4139         if (has_gw && nh_on_port) {
4140                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
4141                                           nh->nh_gw, &index);
4142                 if (err)
4143                         return err;
4144
4145                 group_id = ROCKER_GROUP_L3_UNICAST(index);
4146         } else {
4147                 /* Send to CPU for processing */
4148                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
4149         }
4150
4151         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
4152                                              dst_mask, priority, goto_tbl,
4153                                              group_id, flags);
4154         if (err)
4155                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
4156                            err, &dst);
4157
4158         return err;
4159 }
4160
4161 /*****************
4162  * Net device ops
4163  *****************/
4164
4165 static int rocker_port_open(struct net_device *dev)
4166 {
4167         struct rocker_port *rocker_port = netdev_priv(dev);
4168         int err;
4169
4170         err = rocker_port_dma_rings_init(rocker_port);
4171         if (err)
4172                 return err;
4173
4174         err = request_irq(rocker_msix_tx_vector(rocker_port),
4175                           rocker_tx_irq_handler, 0,
4176                           rocker_driver_name, rocker_port);
4177         if (err) {
4178                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
4179                 goto err_request_tx_irq;
4180         }
4181
4182         err = request_irq(rocker_msix_rx_vector(rocker_port),
4183                           rocker_rx_irq_handler, 0,
4184                           rocker_driver_name, rocker_port);
4185         if (err) {
4186                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
4187                 goto err_request_rx_irq;
4188         }
4189
4190         err = rocker_world_port_open(rocker_port);
4191         if (err) {
4192                 netdev_err(rocker_port->dev, "cannot open port in world\n");
4193                 goto err_world_port_open;
4194         }
4195
4196         err = rocker_port_fwd_enable(rocker_port, NULL, 0);
4197         if (err)
4198                 goto err_fwd_enable;
4199
4200         napi_enable(&rocker_port->napi_tx);
4201         napi_enable(&rocker_port->napi_rx);
4202         if (!dev->proto_down)
4203                 rocker_port_set_enable(rocker_port, true);
4204         netif_start_queue(dev);
4205         return 0;
4206
4207 err_fwd_enable:
4208 err_world_port_open:
4209         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4210 err_request_rx_irq:
4211         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4212 err_request_tx_irq:
4213         rocker_port_dma_rings_fini(rocker_port);
4214         return err;
4215 }
4216
4217 static int rocker_port_stop(struct net_device *dev)
4218 {
4219         struct rocker_port *rocker_port = netdev_priv(dev);
4220
4221         netif_stop_queue(dev);
4222         rocker_port_set_enable(rocker_port, false);
4223         napi_disable(&rocker_port->napi_rx);
4224         napi_disable(&rocker_port->napi_tx);
4225         rocker_world_port_stop(rocker_port);
4226         rocker_port_fwd_disable(rocker_port, NULL,
4227                                 ROCKER_OP_FLAG_NOWAIT);
4228         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4229         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4230         rocker_port_dma_rings_fini(rocker_port);
4231
4232         return 0;
4233 }
4234
4235 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
4236                                        const struct rocker_desc_info *desc_info)
4237 {
4238         const struct rocker *rocker = rocker_port->rocker;
4239         struct pci_dev *pdev = rocker->pdev;
4240         const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4241         struct rocker_tlv *attr;
4242         int rem;
4243
4244         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4245         if (!attrs[ROCKER_TLV_TX_FRAGS])
4246                 return;
4247         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4248                 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4249                 dma_addr_t dma_handle;
4250                 size_t len;
4251
4252                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4253                         continue;
4254                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4255                                         attr);
4256                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4257                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4258                         continue;
4259                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4260                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4261                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4262         }
4263 }
4264
4265 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
4266                                        struct rocker_desc_info *desc_info,
4267                                        char *buf, size_t buf_len)
4268 {
4269         const struct rocker *rocker = rocker_port->rocker;
4270         struct pci_dev *pdev = rocker->pdev;
4271         dma_addr_t dma_handle;
4272         struct rocker_tlv *frag;
4273
4274         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4275         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4276                 if (net_ratelimit())
4277                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4278                 return -EIO;
4279         }
4280         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4281         if (!frag)
4282                 goto unmap_frag;
4283         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4284                                dma_handle))
4285                 goto nest_cancel;
4286         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4287                                buf_len))
4288                 goto nest_cancel;
4289         rocker_tlv_nest_end(desc_info, frag);
4290         return 0;
4291
4292 nest_cancel:
4293         rocker_tlv_nest_cancel(desc_info, frag);
4294 unmap_frag:
4295         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4296         return -EMSGSIZE;
4297 }
4298
4299 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4300 {
4301         struct rocker_port *rocker_port = netdev_priv(dev);
4302         struct rocker *rocker = rocker_port->rocker;
4303         struct rocker_desc_info *desc_info;
4304         struct rocker_tlv *frags;
4305         int i;
4306         int err;
4307
4308         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4309         if (unlikely(!desc_info)) {
4310                 if (net_ratelimit())
4311                         netdev_err(dev, "tx ring full when queue awake\n");
4312                 return NETDEV_TX_BUSY;
4313         }
4314
4315         rocker_desc_cookie_ptr_set(desc_info, skb);
4316
4317         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4318         if (!frags)
4319                 goto out;
4320         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4321                                           skb->data, skb_headlen(skb));
4322         if (err)
4323                 goto nest_cancel;
4324         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) {
4325                 err = skb_linearize(skb);
4326                 if (err)
4327                         goto unmap_frags;
4328         }
4329
4330         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4331                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4332
4333                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4334                                                   skb_frag_address(frag),
4335                                                   skb_frag_size(frag));
4336                 if (err)
4337                         goto unmap_frags;
4338         }
4339         rocker_tlv_nest_end(desc_info, frags);
4340
4341         rocker_desc_gen_clear(desc_info);
4342         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4343
4344         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4345         if (!desc_info)
4346                 netif_stop_queue(dev);
4347
4348         return NETDEV_TX_OK;
4349
4350 unmap_frags:
4351         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4352 nest_cancel:
4353         rocker_tlv_nest_cancel(desc_info, frags);
4354 out:
4355         dev_kfree_skb(skb);
4356         dev->stats.tx_dropped++;
4357
4358         return NETDEV_TX_OK;
4359 }
4360
4361 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4362 {
4363         struct sockaddr *addr = p;
4364         struct rocker_port *rocker_port = netdev_priv(dev);
4365         int err;
4366
4367         if (!is_valid_ether_addr(addr->sa_data))
4368                 return -EADDRNOTAVAIL;
4369
4370         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4371         if (err)
4372                 return err;
4373         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4374         return 0;
4375 }
4376
4377 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
4378 {
4379         struct rocker_port *rocker_port = netdev_priv(dev);
4380         int running = netif_running(dev);
4381         int err;
4382
4383 #define ROCKER_PORT_MIN_MTU     68
4384 #define ROCKER_PORT_MAX_MTU     9000
4385
4386         if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
4387                 return -EINVAL;
4388
4389         if (running)
4390                 rocker_port_stop(dev);
4391
4392         netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
4393         dev->mtu = new_mtu;
4394
4395         err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
4396         if (err)
4397                 return err;
4398
4399         if (running)
4400                 err = rocker_port_open(dev);
4401
4402         return err;
4403 }
4404
4405 static int rocker_port_get_phys_port_name(struct net_device *dev,
4406                                           char *buf, size_t len)
4407 {
4408         struct rocker_port *rocker_port = netdev_priv(dev);
4409         struct port_name name = { .buf = buf, .len = len };
4410         int err;
4411
4412         err = rocker_cmd_exec(rocker_port, 0,
4413                               rocker_cmd_get_port_settings_prep, NULL,
4414                               rocker_cmd_get_port_settings_phys_name_proc,
4415                               &name);
4416
4417         return err ? -EOPNOTSUPP : 0;
4418 }
4419
4420 static int rocker_port_change_proto_down(struct net_device *dev,
4421                                          bool proto_down)
4422 {
4423         struct rocker_port *rocker_port = netdev_priv(dev);
4424
4425         if (rocker_port->dev->flags & IFF_UP)
4426                 rocker_port_set_enable(rocker_port, !proto_down);
4427         rocker_port->dev->proto_down = proto_down;
4428         return 0;
4429 }
4430
4431 static void rocker_port_neigh_destroy(struct neighbour *n)
4432 {
4433         struct rocker_port *rocker_port = netdev_priv(n->dev);
4434         int flags = ROCKER_OP_FLAG_REMOVE | ROCKER_OP_FLAG_NOWAIT;
4435         __be32 ip_addr = *(__be32 *)n->primary_key;
4436         int err;
4437
4438         rocker_port_ipv4_neigh(rocker_port, NULL,
4439                                flags, ip_addr, n->ha);
4440         err = rocker_world_port_neigh_destroy(rocker_port, n);
4441         if (err)
4442                 netdev_warn(rocker_port->dev, "failed to handle neigh destroy (err %d)\n",
4443                             err);
4444 }
4445
4446 static const struct net_device_ops rocker_port_netdev_ops = {
4447         .ndo_open                       = rocker_port_open,
4448         .ndo_stop                       = rocker_port_stop,
4449         .ndo_start_xmit                 = rocker_port_xmit,
4450         .ndo_set_mac_address            = rocker_port_set_mac_address,
4451         .ndo_change_mtu                 = rocker_port_change_mtu,
4452         .ndo_bridge_getlink             = switchdev_port_bridge_getlink,
4453         .ndo_bridge_setlink             = switchdev_port_bridge_setlink,
4454         .ndo_bridge_dellink             = switchdev_port_bridge_dellink,
4455         .ndo_fdb_add                    = switchdev_port_fdb_add,
4456         .ndo_fdb_del                    = switchdev_port_fdb_del,
4457         .ndo_fdb_dump                   = switchdev_port_fdb_dump,
4458         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4459         .ndo_change_proto_down          = rocker_port_change_proto_down,
4460         .ndo_neigh_destroy              = rocker_port_neigh_destroy,
4461 };
4462
4463 /********************
4464  * swdev interface
4465  ********************/
4466
4467 static int rocker_port_attr_get(struct net_device *dev,
4468                                 struct switchdev_attr *attr)
4469 {
4470         const struct rocker_port *rocker_port = netdev_priv(dev);
4471         const struct rocker *rocker = rocker_port->rocker;
4472         int err = 0;
4473
4474         switch (attr->id) {
4475         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
4476                 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4477                 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4478                 break;
4479         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
4480                 attr->u.brport_flags = rocker_port->brport_flags;
4481                 err = rocker_world_port_attr_bridge_flags_get(rocker_port,
4482                                                               &attr->u.brport_flags);
4483                 break;
4484         default:
4485                 return -EOPNOTSUPP;
4486         }
4487
4488         return err;
4489 }
4490
4491 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4492                                         struct switchdev_trans *trans,
4493                                         unsigned long brport_flags)
4494 {
4495         unsigned long orig_flags;
4496         int err = 0;
4497
4498         orig_flags = rocker_port->brport_flags;
4499         rocker_port->brport_flags = brport_flags;
4500         if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING &&
4501             !switchdev_trans_ph_prepare(trans))
4502                 err = rocker_port_set_learning(rocker_port,
4503                                                !!(rocker_port->brport_flags & BR_LEARNING));
4504
4505         if (switchdev_trans_ph_prepare(trans))
4506                 rocker_port->brport_flags = orig_flags;
4507
4508         return err;
4509 }
4510
4511 static int rocker_port_bridge_ageing_time(struct rocker_port *rocker_port,
4512                                           struct switchdev_trans *trans,
4513                                           u32 ageing_time)
4514 {
4515         if (!switchdev_trans_ph_prepare(trans)) {
4516                 rocker_port->ageing_time = clock_t_to_jiffies(ageing_time);
4517                 mod_timer(&rocker_port->rocker->fdb_cleanup_timer, jiffies);
4518         }
4519
4520         return 0;
4521 }
4522
4523 static int rocker_port_attr_set(struct net_device *dev,
4524                                 const struct switchdev_attr *attr,
4525                                 struct switchdev_trans *trans)
4526 {
4527         struct rocker_port *rocker_port = netdev_priv(dev);
4528         int err = 0;
4529
4530         switch (attr->id) {
4531         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
4532                 err = rocker_port_stp_update(rocker_port, trans, 0,
4533                                              attr->u.stp_state);
4534                 if (err)
4535                         break;
4536                 err = rocker_world_port_attr_stp_state_set(rocker_port,
4537                                                            attr->u.stp_state,
4538                                                            trans);
4539                 break;
4540         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
4541                 err = rocker_port_brport_flags_set(rocker_port, trans,
4542                                                    attr->u.brport_flags);
4543                 if (err)
4544                         break;
4545                 err = rocker_world_port_attr_bridge_flags_set(rocker_port,
4546                                                               attr->u.brport_flags,
4547                                                               trans);
4548                 break;
4549         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
4550                 err = rocker_port_bridge_ageing_time(rocker_port, trans,
4551                                                      attr->u.ageing_time);
4552                 if (err)
4553                         break;
4554                 err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port,
4555                                                                     attr->u.ageing_time,
4556                                                                     trans);
4557                 break;
4558         default:
4559                 err = -EOPNOTSUPP;
4560                 break;
4561         }
4562
4563         return err;
4564 }
4565
4566 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4567                                 struct switchdev_trans *trans,
4568                                 u16 vid, u16 flags)
4569 {
4570         int err;
4571
4572         /* XXX deal with flags for PVID and untagged */
4573
4574         err = rocker_port_vlan(rocker_port, trans, 0, vid);
4575         if (err)
4576                 return err;
4577
4578         err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4579         if (err)
4580                 rocker_port_vlan(rocker_port, trans,
4581                                  ROCKER_OP_FLAG_REMOVE, vid);
4582
4583         return err;
4584 }
4585
4586 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4587                                  struct switchdev_trans *trans,
4588                                  const struct switchdev_obj_port_vlan *vlan)
4589 {
4590         u16 vid;
4591         int err;
4592
4593         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4594                 err = rocker_port_vlan_add(rocker_port, trans,
4595                                            vid, vlan->flags);
4596                 if (err)
4597                         return err;
4598         }
4599
4600         return 0;
4601 }
4602
4603 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4604                                struct switchdev_trans *trans,
4605                                const struct switchdev_obj_port_fdb *fdb)
4606 {
4607         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4608         int flags = 0;
4609
4610         if (!rocker_port_is_bridged(rocker_port))
4611                 return -EINVAL;
4612
4613         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4614 }
4615
4616 static int rocker_port_obj_add(struct net_device *dev,
4617                                const struct switchdev_obj *obj,
4618                                struct switchdev_trans *trans)
4619 {
4620         struct rocker_port *rocker_port = netdev_priv(dev);
4621         const struct switchdev_obj_ipv4_fib *fib4;
4622         int err = 0;
4623
4624         switch (obj->id) {
4625         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4626                 err = rocker_port_vlans_add(rocker_port, trans,
4627                                             SWITCHDEV_OBJ_PORT_VLAN(obj));
4628                 if (err)
4629                         break;
4630                 err = rocker_world_port_obj_vlan_add(rocker_port,
4631                                                      SWITCHDEV_OBJ_PORT_VLAN(obj),
4632                                                      trans);
4633                 break;
4634         case SWITCHDEV_OBJ_ID_IPV4_FIB:
4635                 fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
4636                 err = rocker_port_fib_ipv4(rocker_port, trans,
4637                                            htonl(fib4->dst), fib4->dst_len,
4638                                            &fib4->fi, fib4->tb_id, 0);
4639                 if (err)
4640                         break;
4641                 err = rocker_world_port_obj_fib4_add(rocker_port,
4642                                                      SWITCHDEV_OBJ_IPV4_FIB(obj),
4643                                                      trans);
4644                 break;
4645         case SWITCHDEV_OBJ_ID_PORT_FDB:
4646                 err = rocker_port_fdb_add(rocker_port, trans,
4647                                           SWITCHDEV_OBJ_PORT_FDB(obj));
4648                 if (err)
4649                         break;
4650                 err = rocker_world_port_obj_fdb_add(rocker_port,
4651                                                     SWITCHDEV_OBJ_PORT_FDB(obj),
4652                                                     trans);
4653                 break;
4654         default:
4655                 err = -EOPNOTSUPP;
4656                 break;
4657         }
4658
4659         return err;
4660 }
4661
4662 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4663                                 u16 vid, u16 flags)
4664 {
4665         int err;
4666
4667         err = rocker_port_router_mac(rocker_port, NULL,
4668                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4669         if (err)
4670                 return err;
4671
4672         return rocker_port_vlan(rocker_port, NULL,
4673                                 ROCKER_OP_FLAG_REMOVE, vid);
4674 }
4675
4676 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4677                                  const struct switchdev_obj_port_vlan *vlan)
4678 {
4679         u16 vid;
4680         int err;
4681
4682         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4683                 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4684                 if (err)
4685                         return err;
4686         }
4687
4688         return 0;
4689 }
4690
4691 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4692                                struct switchdev_trans *trans,
4693                                const struct switchdev_obj_port_fdb *fdb)
4694 {
4695         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4696         int flags = ROCKER_OP_FLAG_REMOVE;
4697
4698         if (!rocker_port_is_bridged(rocker_port))
4699                 return -EINVAL;
4700
4701         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4702 }
4703
4704 static int rocker_port_obj_del(struct net_device *dev,
4705                                const struct switchdev_obj *obj)
4706 {
4707         struct rocker_port *rocker_port = netdev_priv(dev);
4708         const struct switchdev_obj_ipv4_fib *fib4;
4709         int err = 0;
4710
4711         switch (obj->id) {
4712         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4713                 err = rocker_port_vlans_del(rocker_port,
4714                                             SWITCHDEV_OBJ_PORT_VLAN(obj));
4715                 if (err)
4716                         break;
4717                 err = rocker_world_port_obj_vlan_del(rocker_port,
4718                                                      SWITCHDEV_OBJ_PORT_VLAN(obj));
4719                 break;
4720         case SWITCHDEV_OBJ_ID_IPV4_FIB:
4721                 fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
4722                 err = rocker_port_fib_ipv4(rocker_port, NULL,
4723                                            htonl(fib4->dst), fib4->dst_len,
4724                                            &fib4->fi, fib4->tb_id,
4725                                            ROCKER_OP_FLAG_REMOVE);
4726                 if (err)
4727                         break;
4728                 err = rocker_world_port_obj_fib4_del(rocker_port,
4729                                                      SWITCHDEV_OBJ_IPV4_FIB(obj));
4730                 break;
4731         case SWITCHDEV_OBJ_ID_PORT_FDB:
4732                 err = rocker_port_fdb_del(rocker_port, NULL,
4733                                           SWITCHDEV_OBJ_PORT_FDB(obj));
4734                 if (err)
4735                         break;
4736                 err = rocker_world_port_obj_fdb_del(rocker_port,
4737                                                     SWITCHDEV_OBJ_PORT_FDB(obj));
4738                 break;
4739         default:
4740                 err = -EOPNOTSUPP;
4741                 break;
4742         }
4743
4744         return err;
4745 }
4746
4747 static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
4748                                 struct switchdev_obj_port_fdb *fdb,
4749                                 switchdev_obj_dump_cb_t *cb)
4750 {
4751         struct rocker *rocker = rocker_port->rocker;
4752         struct rocker_fdb_tbl_entry *found;
4753         struct hlist_node *tmp;
4754         unsigned long lock_flags;
4755         int bkt;
4756         int err = 0;
4757
4758         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4759         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4760                 if (found->key.rocker_port != rocker_port)
4761                         continue;
4762                 ether_addr_copy(fdb->addr, found->key.addr);
4763                 fdb->ndm_state = NUD_REACHABLE;
4764                 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4765                                                    found->key.vlan_id);
4766                 err = cb(&fdb->obj);
4767                 if (err)
4768                         break;
4769         }
4770         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4771
4772         return err;
4773 }
4774
4775 static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
4776                                  struct switchdev_obj_port_vlan *vlan,
4777                                  switchdev_obj_dump_cb_t *cb)
4778 {
4779         u16 vid;
4780         int err = 0;
4781
4782         for (vid = 1; vid < VLAN_N_VID; vid++) {
4783                 if (!test_bit(vid, rocker_port->vlan_bitmap))
4784                         continue;
4785                 vlan->flags = 0;
4786                 if (rocker_vlan_id_is_internal(htons(vid)))
4787                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
4788                 vlan->vid_begin = vid;
4789                 vlan->vid_end = vid;
4790                 err = cb(&vlan->obj);
4791                 if (err)
4792                         break;
4793         }
4794
4795         return err;
4796 }
4797
4798 static int rocker_port_obj_dump(struct net_device *dev,
4799                                 struct switchdev_obj *obj,
4800                                 switchdev_obj_dump_cb_t *cb)
4801 {
4802         const struct rocker_port *rocker_port = netdev_priv(dev);
4803         int err = 0;
4804
4805         switch (obj->id) {
4806         case SWITCHDEV_OBJ_ID_PORT_FDB:
4807                 err = rocker_port_fdb_dump(rocker_port,
4808                                            SWITCHDEV_OBJ_PORT_FDB(obj), cb);
4809                 if (err)
4810                         break;
4811                 err = rocker_world_port_obj_fdb_dump(rocker_port,
4812                                                      SWITCHDEV_OBJ_PORT_FDB(obj),
4813                                                      cb);
4814                 break;
4815         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4816                 err = rocker_port_vlan_dump(rocker_port,
4817                                             SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
4818                 if (err)
4819                         break;
4820                 err = rocker_world_port_obj_vlan_dump(rocker_port,
4821                                                       SWITCHDEV_OBJ_PORT_VLAN(obj),
4822                                                       cb);
4823                 break;
4824         default:
4825                 err = -EOPNOTSUPP;
4826                 break;
4827         }
4828
4829         return err;
4830 }
4831
4832 static const struct switchdev_ops rocker_port_switchdev_ops = {
4833         .switchdev_port_attr_get        = rocker_port_attr_get,
4834         .switchdev_port_attr_set        = rocker_port_attr_set,
4835         .switchdev_port_obj_add         = rocker_port_obj_add,
4836         .switchdev_port_obj_del         = rocker_port_obj_del,
4837         .switchdev_port_obj_dump        = rocker_port_obj_dump,
4838 };
4839
4840 /********************
4841  * ethtool interface
4842  ********************/
4843
4844 static int rocker_port_get_settings(struct net_device *dev,
4845                                     struct ethtool_cmd *ecmd)
4846 {
4847         struct rocker_port *rocker_port = netdev_priv(dev);
4848
4849         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4850 }
4851
4852 static int rocker_port_set_settings(struct net_device *dev,
4853                                     struct ethtool_cmd *ecmd)
4854 {
4855         struct rocker_port *rocker_port = netdev_priv(dev);
4856
4857         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4858 }
4859
4860 static void rocker_port_get_drvinfo(struct net_device *dev,
4861                                     struct ethtool_drvinfo *drvinfo)
4862 {
4863         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4864         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4865 }
4866
4867 static struct rocker_port_stats {
4868         char str[ETH_GSTRING_LEN];
4869         int type;
4870 } rocker_port_stats[] = {
4871         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4872         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4873         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4874         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4875
4876         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4877         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4878         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4879         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4880 };
4881
4882 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4883
4884 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4885                                     u8 *data)
4886 {
4887         u8 *p = data;
4888         int i;
4889
4890         switch (stringset) {
4891         case ETH_SS_STATS:
4892                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4893                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4894                         p += ETH_GSTRING_LEN;
4895                 }
4896                 break;
4897         }
4898 }
4899
4900 static int
4901 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
4902                                struct rocker_desc_info *desc_info,
4903                                void *priv)
4904 {
4905         struct rocker_tlv *cmd_stats;
4906
4907         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4908                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4909                 return -EMSGSIZE;
4910
4911         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4912         if (!cmd_stats)
4913                 return -EMSGSIZE;
4914
4915         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4916                                rocker_port->pport))
4917                 return -EMSGSIZE;
4918
4919         rocker_tlv_nest_end(desc_info, cmd_stats);
4920
4921         return 0;
4922 }
4923
4924 static int
4925 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
4926                                        const struct rocker_desc_info *desc_info,
4927                                        void *priv)
4928 {
4929         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4930         const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4931         const struct rocker_tlv *pattr;
4932         u32 pport;
4933         u64 *data = priv;
4934         int i;
4935
4936         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4937
4938         if (!attrs[ROCKER_TLV_CMD_INFO])
4939                 return -EIO;
4940
4941         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4942                                 attrs[ROCKER_TLV_CMD_INFO]);
4943
4944         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4945                 return -EIO;
4946
4947         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4948         if (pport != rocker_port->pport)
4949                 return -EIO;
4950
4951         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4952                 pattr = stats_attrs[rocker_port_stats[i].type];
4953                 if (!pattr)
4954                         continue;
4955
4956                 data[i] = rocker_tlv_get_u64(pattr);
4957         }
4958
4959         return 0;
4960 }
4961
4962 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4963                                              void *priv)
4964 {
4965         return rocker_cmd_exec(rocker_port, 0,
4966                                rocker_cmd_get_port_stats_prep, NULL,
4967                                rocker_cmd_get_port_stats_ethtool_proc,
4968                                priv);
4969 }
4970
4971 static void rocker_port_get_stats(struct net_device *dev,
4972                                   struct ethtool_stats *stats, u64 *data)
4973 {
4974         struct rocker_port *rocker_port = netdev_priv(dev);
4975
4976         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4977                 int i;
4978
4979                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4980                         data[i] = 0;
4981         }
4982 }
4983
4984 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4985 {
4986         switch (sset) {
4987         case ETH_SS_STATS:
4988                 return ROCKER_PORT_STATS_LEN;
4989         default:
4990                 return -EOPNOTSUPP;
4991         }
4992 }
4993
4994 static const struct ethtool_ops rocker_port_ethtool_ops = {
4995         .get_settings           = rocker_port_get_settings,
4996         .set_settings           = rocker_port_set_settings,
4997         .get_drvinfo            = rocker_port_get_drvinfo,
4998         .get_link               = ethtool_op_get_link,
4999         .get_strings            = rocker_port_get_strings,
5000         .get_ethtool_stats      = rocker_port_get_stats,
5001         .get_sset_count         = rocker_port_get_sset_count,
5002 };
5003
5004 /*****************
5005  * NAPI interface
5006  *****************/
5007
5008 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
5009 {
5010         return container_of(napi, struct rocker_port, napi_tx);
5011 }
5012
5013 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
5014 {
5015         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
5016         const struct rocker *rocker = rocker_port->rocker;
5017         const struct rocker_desc_info *desc_info;
5018         u32 credits = 0;
5019         int err;
5020
5021         /* Cleanup tx descriptors */
5022         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
5023                 struct sk_buff *skb;
5024
5025                 err = rocker_desc_err(desc_info);
5026                 if (err && net_ratelimit())
5027                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
5028                                    err);
5029                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
5030
5031                 skb = rocker_desc_cookie_ptr_get(desc_info);
5032                 if (err == 0) {
5033                         rocker_port->dev->stats.tx_packets++;
5034                         rocker_port->dev->stats.tx_bytes += skb->len;
5035                 } else {
5036                         rocker_port->dev->stats.tx_errors++;
5037                 }
5038
5039                 dev_kfree_skb_any(skb);
5040                 credits++;
5041         }
5042
5043         if (credits && netif_queue_stopped(rocker_port->dev))
5044                 netif_wake_queue(rocker_port->dev);
5045
5046         napi_complete(napi);
5047         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
5048
5049         return 0;
5050 }
5051
5052 static int rocker_port_rx_proc(const struct rocker *rocker,
5053                                const struct rocker_port *rocker_port,
5054                                struct rocker_desc_info *desc_info)
5055 {
5056         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
5057         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
5058         size_t rx_len;
5059         u16 rx_flags = 0;
5060
5061         if (!skb)
5062                 return -ENOENT;
5063
5064         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
5065         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
5066                 return -EINVAL;
5067         if (attrs[ROCKER_TLV_RX_FLAGS])
5068                 rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]);
5069
5070         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
5071
5072         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
5073         skb_put(skb, rx_len);
5074         skb->protocol = eth_type_trans(skb, rocker_port->dev);
5075
5076         if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD)
5077                 skb->offload_fwd_mark = rocker_port->dev->offload_fwd_mark;
5078
5079         rocker_port->dev->stats.rx_packets++;
5080         rocker_port->dev->stats.rx_bytes += skb->len;
5081
5082         netif_receive_skb(skb);
5083
5084         return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
5085 }
5086
5087 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
5088 {
5089         return container_of(napi, struct rocker_port, napi_rx);
5090 }
5091
5092 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
5093 {
5094         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
5095         const struct rocker *rocker = rocker_port->rocker;
5096         struct rocker_desc_info *desc_info;
5097         u32 credits = 0;
5098         int err;
5099
5100         /* Process rx descriptors */
5101         while (credits < budget &&
5102                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
5103                 err = rocker_desc_err(desc_info);
5104                 if (err) {
5105                         if (net_ratelimit())
5106                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
5107                                            err);
5108                 } else {
5109                         err = rocker_port_rx_proc(rocker, rocker_port,
5110                                                   desc_info);
5111                         if (err && net_ratelimit())
5112                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
5113                                            err);
5114                 }
5115                 if (err)
5116                         rocker_port->dev->stats.rx_errors++;
5117
5118                 rocker_desc_gen_clear(desc_info);
5119                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
5120                 credits++;
5121         }
5122
5123         if (credits < budget)
5124                 napi_complete(napi);
5125
5126         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
5127
5128         return credits;
5129 }
5130
5131 /*****************
5132  * PCI driver ops
5133  *****************/
5134
5135 static void rocker_carrier_init(const struct rocker_port *rocker_port)
5136 {
5137         const struct rocker *rocker = rocker_port->rocker;
5138         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
5139         bool link_up;
5140
5141         link_up = link_status & (1 << rocker_port->pport);
5142         if (link_up)
5143                 netif_carrier_on(rocker_port->dev);
5144         else
5145                 netif_carrier_off(rocker_port->dev);
5146 }
5147
5148 static void rocker_remove_ports(struct rocker *rocker)
5149 {
5150         struct rocker_port *rocker_port;
5151         int i;
5152
5153         for (i = 0; i < rocker->port_count; i++) {
5154                 rocker_port = rocker->ports[i];
5155                 if (!rocker_port)
5156                         continue;
5157                 rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
5158                 rocker_world_port_fini(rocker_port);
5159                 unregister_netdev(rocker_port->dev);
5160                 rocker_world_port_post_fini(rocker_port);
5161                 free_netdev(rocker_port->dev);
5162         }
5163         rocker_world_fini(rocker);
5164         kfree(rocker->ports);
5165 }
5166
5167 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
5168 {
5169         const struct rocker *rocker = rocker_port->rocker;
5170         const struct pci_dev *pdev = rocker->pdev;
5171         int err;
5172
5173         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
5174                                                    rocker_port->dev->dev_addr);
5175         if (err) {
5176                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
5177                 eth_hw_addr_random(rocker_port->dev);
5178         }
5179 }
5180
5181 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
5182 {
5183         const struct pci_dev *pdev = rocker->pdev;
5184         struct rocker_port *rocker_port;
5185         struct net_device *dev;
5186         u16 untagged_vid = 0;
5187         int err;
5188
5189         dev = alloc_etherdev(sizeof(struct rocker_port));
5190         if (!dev)
5191                 return -ENOMEM;
5192         rocker_port = netdev_priv(dev);
5193         rocker_port->dev = dev;
5194         rocker_port->rocker = rocker;
5195         rocker_port->port_number = port_number;
5196         rocker_port->pport = port_number + 1;
5197         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
5198         rocker_port->ageing_time = BR_DEFAULT_AGEING_TIME;
5199
5200         err = rocker_world_check_init(rocker_port);
5201         if (err) {
5202                 dev_err(&pdev->dev, "world init failed\n");
5203                 goto err_world_check_init;
5204         }
5205
5206         rocker_port_dev_addr_init(rocker_port);
5207         dev->netdev_ops = &rocker_port_netdev_ops;
5208         dev->ethtool_ops = &rocker_port_ethtool_ops;
5209         dev->switchdev_ops = &rocker_port_switchdev_ops;
5210         netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
5211                           NAPI_POLL_WEIGHT);
5212         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
5213                        NAPI_POLL_WEIGHT);
5214         rocker_carrier_init(rocker_port);
5215
5216         dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG;
5217
5218         err = rocker_world_port_pre_init(rocker_port);
5219         if (err) {
5220                 dev_err(&pdev->dev, "port world pre-init failed\n");
5221                 goto err_world_port_pre_init;
5222         }
5223         err = register_netdev(dev);
5224         if (err) {
5225                 dev_err(&pdev->dev, "register_netdev failed\n");
5226                 goto err_register_netdev;
5227         }
5228         rocker->ports[port_number] = rocker_port;
5229
5230         err = rocker_world_port_init(rocker_port);
5231         if (err) {
5232                 dev_err(&pdev->dev, "port world init failed\n");
5233                 goto err_world_port_init;
5234         }
5235
5236         switchdev_port_fwd_mark_set(rocker_port->dev, NULL, false);
5237
5238         rocker_port_set_learning(rocker_port,
5239                                  !!(rocker_port->brport_flags & BR_LEARNING));
5240
5241         err = rocker_port_ig_tbl(rocker_port, NULL, 0);
5242         if (err) {
5243                 netdev_err(rocker_port->dev, "install ig port table failed\n");
5244                 goto err_port_ig_tbl;
5245         }
5246
5247         rocker_port->internal_vlan_id =
5248                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
5249
5250         err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5251         if (err) {
5252                 netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
5253                 goto err_untagged_vlan;
5254         }
5255
5256         return 0;
5257
5258 err_untagged_vlan:
5259         rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
5260 err_port_ig_tbl:
5261         rocker_world_port_fini(rocker_port);
5262 err_world_port_init:
5263         rocker->ports[port_number] = NULL;
5264         unregister_netdev(dev);
5265 err_register_netdev:
5266         rocker_world_port_post_fini(rocker_port);
5267 err_world_port_pre_init:
5268 err_world_check_init:
5269         free_netdev(dev);
5270         return err;
5271 }
5272
5273 static int rocker_probe_ports(struct rocker *rocker)
5274 {
5275         int i;
5276         size_t alloc_size;
5277         int err;
5278
5279         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
5280         rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
5281         if (!rocker->ports)
5282                 return -ENOMEM;
5283         for (i = 0; i < rocker->port_count; i++) {
5284                 err = rocker_probe_port(rocker, i);
5285                 if (err)
5286                         goto remove_ports;
5287         }
5288         return 0;
5289
5290 remove_ports:
5291         rocker_remove_ports(rocker);
5292         return err;
5293 }
5294
5295 static int rocker_msix_init(struct rocker *rocker)
5296 {
5297         struct pci_dev *pdev = rocker->pdev;
5298         int msix_entries;
5299         int i;
5300         int err;
5301
5302         msix_entries = pci_msix_vec_count(pdev);
5303         if (msix_entries < 0)
5304                 return msix_entries;
5305
5306         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
5307                 return -EINVAL;
5308
5309         rocker->msix_entries = kmalloc_array(msix_entries,
5310                                              sizeof(struct msix_entry),
5311                                              GFP_KERNEL);
5312         if (!rocker->msix_entries)
5313                 return -ENOMEM;
5314
5315         for (i = 0; i < msix_entries; i++)
5316                 rocker->msix_entries[i].entry = i;
5317
5318         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
5319         if (err < 0)
5320                 goto err_enable_msix;
5321
5322         return 0;
5323
5324 err_enable_msix:
5325         kfree(rocker->msix_entries);
5326         return err;
5327 }
5328
5329 static void rocker_msix_fini(const struct rocker *rocker)
5330 {
5331         pci_disable_msix(rocker->pdev);
5332         kfree(rocker->msix_entries);
5333 }
5334
5335 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5336 {
5337         struct rocker *rocker;
5338         int err;
5339
5340         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
5341         if (!rocker)
5342                 return -ENOMEM;
5343
5344         err = pci_enable_device(pdev);
5345         if (err) {
5346                 dev_err(&pdev->dev, "pci_enable_device failed\n");
5347                 goto err_pci_enable_device;
5348         }
5349
5350         err = pci_request_regions(pdev, rocker_driver_name);
5351         if (err) {
5352                 dev_err(&pdev->dev, "pci_request_regions failed\n");
5353                 goto err_pci_request_regions;
5354         }
5355
5356         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5357         if (!err) {
5358                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5359                 if (err) {
5360                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5361                         goto err_pci_set_dma_mask;
5362                 }
5363         } else {
5364                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5365                 if (err) {
5366                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5367                         goto err_pci_set_dma_mask;
5368                 }
5369         }
5370
5371         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5372                 dev_err(&pdev->dev, "invalid PCI region size\n");
5373                 err = -EINVAL;
5374                 goto err_pci_resource_len_check;
5375         }
5376
5377         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5378                                   pci_resource_len(pdev, 0));
5379         if (!rocker->hw_addr) {
5380                 dev_err(&pdev->dev, "ioremap failed\n");
5381                 err = -EIO;
5382                 goto err_ioremap;
5383         }
5384         pci_set_master(pdev);
5385
5386         rocker->pdev = pdev;
5387         pci_set_drvdata(pdev, rocker);
5388
5389         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5390
5391         err = rocker_msix_init(rocker);
5392         if (err) {
5393                 dev_err(&pdev->dev, "MSI-X init failed\n");
5394                 goto err_msix_init;
5395         }
5396
5397         err = rocker_basic_hw_test(rocker);
5398         if (err) {
5399                 dev_err(&pdev->dev, "basic hw test failed\n");
5400                 goto err_basic_hw_test;
5401         }
5402
5403         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5404
5405         err = rocker_dma_rings_init(rocker);
5406         if (err)
5407                 goto err_dma_rings_init;
5408
5409         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5410                           rocker_cmd_irq_handler, 0,
5411                           rocker_driver_name, rocker);
5412         if (err) {
5413                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5414                 goto err_request_cmd_irq;
5415         }
5416
5417         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5418                           rocker_event_irq_handler, 0,
5419                           rocker_driver_name, rocker);
5420         if (err) {
5421                 dev_err(&pdev->dev, "cannot assign event irq\n");
5422                 goto err_request_event_irq;
5423         }
5424
5425         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5426
5427         err = rocker_init_tbls(rocker);
5428         if (err) {
5429                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5430                 goto err_init_tbls;
5431         }
5432
5433         setup_timer(&rocker->fdb_cleanup_timer, rocker_fdb_cleanup,
5434                     (unsigned long) rocker);
5435         mod_timer(&rocker->fdb_cleanup_timer, jiffies);
5436
5437         err = rocker_probe_ports(rocker);
5438         if (err) {
5439                 dev_err(&pdev->dev, "failed to probe ports\n");
5440                 goto err_probe_ports;
5441         }
5442
5443         dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
5444                  (int)sizeof(rocker->hw.id), &rocker->hw.id);
5445
5446         return 0;
5447
5448 err_probe_ports:
5449         del_timer_sync(&rocker->fdb_cleanup_timer);
5450         rocker_free_tbls(rocker);
5451 err_init_tbls:
5452         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5453 err_request_event_irq:
5454         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5455 err_request_cmd_irq:
5456         rocker_dma_rings_fini(rocker);
5457 err_dma_rings_init:
5458 err_basic_hw_test:
5459         rocker_msix_fini(rocker);
5460 err_msix_init:
5461         iounmap(rocker->hw_addr);
5462 err_ioremap:
5463 err_pci_resource_len_check:
5464 err_pci_set_dma_mask:
5465         pci_release_regions(pdev);
5466 err_pci_request_regions:
5467         pci_disable_device(pdev);
5468 err_pci_enable_device:
5469         kfree(rocker);
5470         return err;
5471 }
5472
5473 static void rocker_remove(struct pci_dev *pdev)
5474 {
5475         struct rocker *rocker = pci_get_drvdata(pdev);
5476
5477         del_timer_sync(&rocker->fdb_cleanup_timer);
5478         rocker_free_tbls(rocker);
5479         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5480         rocker_remove_ports(rocker);
5481         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5482         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5483         rocker_dma_rings_fini(rocker);
5484         rocker_msix_fini(rocker);
5485         iounmap(rocker->hw_addr);
5486         pci_release_regions(rocker->pdev);
5487         pci_disable_device(rocker->pdev);
5488         kfree(rocker);
5489 }
5490
5491 static struct pci_driver rocker_pci_driver = {
5492         .name           = rocker_driver_name,
5493         .id_table       = rocker_pci_id_table,
5494         .probe          = rocker_probe,
5495         .remove         = rocker_remove,
5496 };
5497
5498 /************************************
5499  * Net device notifier event handler
5500  ************************************/
5501
5502 static bool rocker_port_dev_check(const struct net_device *dev)
5503 {
5504         return dev->netdev_ops == &rocker_port_netdev_ops;
5505 }
5506
5507 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5508                                    struct net_device *bridge)
5509 {
5510         u16 untagged_vid = 0;
5511         int err;
5512
5513         /* Port is joining bridge, so the internal VLAN for the
5514          * port is going to change to the bridge internal VLAN.
5515          * Let's remove untagged VLAN (vid=0) from port and
5516          * re-add once internal VLAN has changed.
5517          */
5518
5519         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5520         if (err)
5521                 return err;
5522
5523         rocker_port_internal_vlan_id_put(rocker_port,
5524                                          rocker_port->dev->ifindex);
5525         rocker_port->internal_vlan_id =
5526                 rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
5527
5528         rocker_port->bridge_dev = bridge;
5529         switchdev_port_fwd_mark_set(rocker_port->dev, bridge, true);
5530
5531         return rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5532 }
5533
5534 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5535 {
5536         u16 untagged_vid = 0;
5537         int err;
5538
5539         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5540         if (err)
5541                 return err;
5542
5543         rocker_port_internal_vlan_id_put(rocker_port,
5544                                          rocker_port->bridge_dev->ifindex);
5545         rocker_port->internal_vlan_id =
5546                 rocker_port_internal_vlan_id_get(rocker_port,
5547                                                  rocker_port->dev->ifindex);
5548
5549         switchdev_port_fwd_mark_set(rocker_port->dev, rocker_port->bridge_dev,
5550                                     false);
5551         rocker_port->bridge_dev = NULL;
5552
5553         err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5554         if (err)
5555                 return err;
5556
5557         if (rocker_port->dev->flags & IFF_UP)
5558                 err = rocker_port_fwd_enable(rocker_port, NULL, 0);
5559
5560         return err;
5561 }
5562
5563 static int rocker_port_ovs_changed(struct rocker_port *rocker_port,
5564                                    struct net_device *master)
5565 {
5566         int err;
5567
5568         rocker_port->bridge_dev = master;
5569
5570         err = rocker_port_fwd_disable(rocker_port, NULL, 0);
5571         if (err)
5572                 return err;
5573         err = rocker_port_fwd_enable(rocker_port, NULL, 0);
5574
5575         return err;
5576 }
5577
5578 static int rocker_port_master_linked(struct rocker_port *rocker_port,
5579                                      struct net_device *master)
5580 {
5581         int err = 0;
5582
5583         if (netif_is_bridge_master(master))
5584                 err = rocker_port_bridge_join(rocker_port, master);
5585         else if (netif_is_ovs_master(master))
5586                 err = rocker_port_ovs_changed(rocker_port, master);
5587         return err;
5588 }
5589
5590 static int rocker_port_master_unlinked(struct rocker_port *rocker_port)
5591 {
5592         int err = 0;
5593
5594         if (rocker_port_is_bridged(rocker_port))
5595                 err = rocker_port_bridge_leave(rocker_port);
5596         else if (rocker_port_is_ovsed(rocker_port))
5597                 err = rocker_port_ovs_changed(rocker_port, NULL);
5598         return err;
5599 }
5600
5601 static int rocker_netdevice_event(struct notifier_block *unused,
5602                                   unsigned long event, void *ptr)
5603 {
5604         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
5605         struct netdev_notifier_changeupper_info *info;
5606         struct rocker_port *rocker_port;
5607         int err;
5608
5609         if (!rocker_port_dev_check(dev))
5610                 return NOTIFY_DONE;
5611
5612         switch (event) {
5613         case NETDEV_CHANGEUPPER:
5614                 info = ptr;
5615                 if (!info->master)
5616                         goto out;
5617                 rocker_port = netdev_priv(dev);
5618                 if (info->linking) {
5619                         err = rocker_world_port_master_linked(rocker_port,
5620                                                               info->upper_dev);
5621                         if (err)
5622                                 netdev_warn(dev, "failed to reflect master linked (err %d)\n",
5623                                             err);
5624                         err = rocker_port_master_linked(rocker_port,
5625                                                         info->upper_dev);
5626                         if (err)
5627                                 netdev_warn(dev, "failed to reflect master linked (err %d)\n",
5628                                             err);
5629                 } else {
5630                         err = rocker_world_port_master_unlinked(rocker_port,
5631                                                                 info->upper_dev);
5632                         if (err)
5633                                 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
5634                                             err);
5635                         err = rocker_port_master_unlinked(rocker_port);
5636                         if (err)
5637                                 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
5638                                             err);
5639                 }
5640                 break;
5641         }
5642 out:
5643         return NOTIFY_DONE;
5644 }
5645
5646 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5647         .notifier_call = rocker_netdevice_event,
5648 };
5649
5650 /************************************
5651  * Net event notifier event handler
5652  ************************************/
5653
5654 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5655 {
5656         struct rocker_port *rocker_port = netdev_priv(dev);
5657         int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
5658                     ROCKER_OP_FLAG_NOWAIT;
5659         __be32 ip_addr = *(__be32 *)n->primary_key;
5660
5661         return rocker_port_ipv4_neigh(rocker_port, NULL, flags, ip_addr, n->ha);
5662 }
5663
5664 static int rocker_netevent_event(struct notifier_block *unused,
5665                                  unsigned long event, void *ptr)
5666 {
5667         struct rocker_port *rocker_port;
5668         struct net_device *dev;
5669         struct neighbour *n = ptr;
5670         int err;
5671
5672         switch (event) {
5673         case NETEVENT_NEIGH_UPDATE:
5674                 if (n->tbl != &arp_tbl)
5675                         return NOTIFY_DONE;
5676                 dev = n->dev;
5677                 if (!rocker_port_dev_check(dev))
5678                         return NOTIFY_DONE;
5679                 rocker_port = netdev_priv(dev);
5680                 err = rocker_world_port_neigh_update(rocker_port, n);
5681                 if (err)
5682                         netdev_warn(dev, "failed to handle neigh update (err %d)\n",
5683                                     err);
5684                 err = rocker_neigh_update(dev, n);
5685                 if (err)
5686                         netdev_warn(dev,
5687                                     "failed to handle neigh update (err %d)\n",
5688                                     err);
5689                 break;
5690         }
5691
5692         return NOTIFY_DONE;
5693 }
5694
5695 static struct notifier_block rocker_netevent_nb __read_mostly = {
5696         .notifier_call = rocker_netevent_event,
5697 };
5698
5699 /***********************
5700  * Module init and exit
5701  ***********************/
5702
5703 static int __init rocker_module_init(void)
5704 {
5705         int err;
5706
5707         register_netdevice_notifier(&rocker_netdevice_nb);
5708         register_netevent_notifier(&rocker_netevent_nb);
5709         err = pci_register_driver(&rocker_pci_driver);
5710         if (err)
5711                 goto err_pci_register_driver;
5712         return 0;
5713
5714 err_pci_register_driver:
5715         unregister_netevent_notifier(&rocker_netevent_nb);
5716         unregister_netdevice_notifier(&rocker_netdevice_nb);
5717         return err;
5718 }
5719
5720 static void __exit rocker_module_exit(void)
5721 {
5722         unregister_netevent_notifier(&rocker_netevent_nb);
5723         unregister_netdevice_notifier(&rocker_netdevice_nb);
5724         pci_unregister_driver(&rocker_pci_driver);
5725 }
5726
5727 module_init(rocker_module_init);
5728 module_exit(rocker_module_exit);
5729
5730 MODULE_LICENSE("GPL v2");
5731 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5732 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5733 MODULE_DESCRIPTION("Rocker switch device driver");
5734 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);