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,
1341                            struct switchdev_trans *trans, int flags,
1342                            rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1343                            rocker_cmd_proc_cb_t process, void *process_priv)
1344 {
1345         struct rocker *rocker = rocker_port->rocker;
1346         struct rocker_desc_info *desc_info;
1347         struct rocker_wait *wait;
1348         bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
1349         unsigned long lock_flags;
1350         int err;
1351
1352         spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1353
1354         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1355         if (!desc_info) {
1356                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1357                 return -EAGAIN;
1358         }
1359
1360         wait = rocker_desc_cookie_ptr_get(desc_info);
1361         rocker_wait_init(wait);
1362         wait->nowait = nowait;
1363
1364         err = prepare(rocker_port, desc_info, prepare_priv);
1365         if (err) {
1366                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1367                 return err;
1368         }
1369
1370         if (!switchdev_trans_ph_prepare(trans))
1371                 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1372
1373         spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1374
1375         if (nowait)
1376                 return 0;
1377
1378         if (!switchdev_trans_ph_prepare(trans))
1379                 if (!rocker_wait_event_timeout(wait, HZ / 10))
1380                         return -EIO;
1381
1382         err = rocker_desc_err(desc_info);
1383         if (err)
1384                 return err;
1385
1386         if (process)
1387                 err = process(rocker_port, desc_info, process_priv);
1388
1389         rocker_desc_gen_clear(desc_info);
1390         return err;
1391 }
1392
1393 static int
1394 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1395                                   struct rocker_desc_info *desc_info,
1396                                   void *priv)
1397 {
1398         struct rocker_tlv *cmd_info;
1399
1400         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1401                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1402                 return -EMSGSIZE;
1403         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1404         if (!cmd_info)
1405                 return -EMSGSIZE;
1406         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1407                                rocker_port->pport))
1408                 return -EMSGSIZE;
1409         rocker_tlv_nest_end(desc_info, cmd_info);
1410         return 0;
1411 }
1412
1413 static int
1414 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1415                                           const struct rocker_desc_info *desc_info,
1416                                           void *priv)
1417 {
1418         struct ethtool_cmd *ecmd = priv;
1419         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1420         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1421         u32 speed;
1422         u8 duplex;
1423         u8 autoneg;
1424
1425         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1426         if (!attrs[ROCKER_TLV_CMD_INFO])
1427                 return -EIO;
1428
1429         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1430                                 attrs[ROCKER_TLV_CMD_INFO]);
1431         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1432             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1433             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1434                 return -EIO;
1435
1436         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1437         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1438         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1439
1440         ecmd->transceiver = XCVR_INTERNAL;
1441         ecmd->supported = SUPPORTED_TP;
1442         ecmd->phy_address = 0xff;
1443         ecmd->port = PORT_TP;
1444         ethtool_cmd_speed_set(ecmd, speed);
1445         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1446         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1447
1448         return 0;
1449 }
1450
1451 static int
1452 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1453                                           const struct rocker_desc_info *desc_info,
1454                                           void *priv)
1455 {
1456         unsigned char *macaddr = priv;
1457         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1458         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1459         const struct rocker_tlv *attr;
1460
1461         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1462         if (!attrs[ROCKER_TLV_CMD_INFO])
1463                 return -EIO;
1464
1465         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1466                                 attrs[ROCKER_TLV_CMD_INFO]);
1467         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1468         if (!attr)
1469                 return -EIO;
1470
1471         if (rocker_tlv_len(attr) != ETH_ALEN)
1472                 return -EINVAL;
1473
1474         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1475         return 0;
1476 }
1477
1478 static int
1479 rocker_cmd_get_port_settings_mode_proc(const struct rocker_port *rocker_port,
1480                                        const struct rocker_desc_info *desc_info,
1481                                        void *priv)
1482 {
1483         u8 *p_mode = priv;
1484         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1485         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1486         const struct rocker_tlv *attr;
1487
1488         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1489         if (!attrs[ROCKER_TLV_CMD_INFO])
1490                 return -EIO;
1491
1492         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1493                                 attrs[ROCKER_TLV_CMD_INFO]);
1494         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE];
1495         if (!attr)
1496                 return -EIO;
1497
1498         *p_mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]);
1499         return 0;
1500 }
1501
1502 struct port_name {
1503         char *buf;
1504         size_t len;
1505 };
1506
1507 static int
1508 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1509                                             const struct rocker_desc_info *desc_info,
1510                                             void *priv)
1511 {
1512         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1513         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1514         struct port_name *name = priv;
1515         const struct rocker_tlv *attr;
1516         size_t i, j, len;
1517         const char *str;
1518
1519         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1520         if (!attrs[ROCKER_TLV_CMD_INFO])
1521                 return -EIO;
1522
1523         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1524                                 attrs[ROCKER_TLV_CMD_INFO]);
1525         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1526         if (!attr)
1527                 return -EIO;
1528
1529         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1530         str = rocker_tlv_data(attr);
1531
1532         /* make sure name only contains alphanumeric characters */
1533         for (i = j = 0; i < len; ++i) {
1534                 if (isalnum(str[i])) {
1535                         name->buf[j] = str[i];
1536                         j++;
1537                 }
1538         }
1539
1540         if (j == 0)
1541                 return -EIO;
1542
1543         name->buf[j] = '\0';
1544
1545         return 0;
1546 }
1547
1548 static int
1549 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1550                                           struct rocker_desc_info *desc_info,
1551                                           void *priv)
1552 {
1553         struct ethtool_cmd *ecmd = priv;
1554         struct rocker_tlv *cmd_info;
1555
1556         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1557                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1558                 return -EMSGSIZE;
1559         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1560         if (!cmd_info)
1561                 return -EMSGSIZE;
1562         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1563                                rocker_port->pport))
1564                 return -EMSGSIZE;
1565         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1566                                ethtool_cmd_speed(ecmd)))
1567                 return -EMSGSIZE;
1568         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1569                               ecmd->duplex))
1570                 return -EMSGSIZE;
1571         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1572                               ecmd->autoneg))
1573                 return -EMSGSIZE;
1574         rocker_tlv_nest_end(desc_info, cmd_info);
1575         return 0;
1576 }
1577
1578 static int
1579 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1580                                           struct rocker_desc_info *desc_info,
1581                                           void *priv)
1582 {
1583         const unsigned char *macaddr = priv;
1584         struct rocker_tlv *cmd_info;
1585
1586         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1587                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1588                 return -EMSGSIZE;
1589         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1590         if (!cmd_info)
1591                 return -EMSGSIZE;
1592         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1593                                rocker_port->pport))
1594                 return -EMSGSIZE;
1595         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1596                            ETH_ALEN, macaddr))
1597                 return -EMSGSIZE;
1598         rocker_tlv_nest_end(desc_info, cmd_info);
1599         return 0;
1600 }
1601
1602 static int
1603 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1604                                       struct rocker_desc_info *desc_info,
1605                                       void *priv)
1606 {
1607         int mtu = *(int *)priv;
1608         struct rocker_tlv *cmd_info;
1609
1610         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1611                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1612                 return -EMSGSIZE;
1613         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1614         if (!cmd_info)
1615                 return -EMSGSIZE;
1616         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1617                                rocker_port->pport))
1618                 return -EMSGSIZE;
1619         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1620                                mtu))
1621                 return -EMSGSIZE;
1622         rocker_tlv_nest_end(desc_info, cmd_info);
1623         return 0;
1624 }
1625
1626 static int
1627 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1628                                   struct rocker_desc_info *desc_info,
1629                                   void *priv)
1630 {
1631         bool learning = *(bool *)priv;
1632         struct rocker_tlv *cmd_info;
1633
1634         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1635                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1636                 return -EMSGSIZE;
1637         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1638         if (!cmd_info)
1639                 return -EMSGSIZE;
1640         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1641                                rocker_port->pport))
1642                 return -EMSGSIZE;
1643         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1644                               learning))
1645                 return -EMSGSIZE;
1646         rocker_tlv_nest_end(desc_info, cmd_info);
1647         return 0;
1648 }
1649
1650 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1651                                                 struct ethtool_cmd *ecmd)
1652 {
1653         return rocker_cmd_exec(rocker_port, NULL, 0,
1654                                rocker_cmd_get_port_settings_prep, NULL,
1655                                rocker_cmd_get_port_settings_ethtool_proc,
1656                                ecmd);
1657 }
1658
1659 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1660                                                 unsigned char *macaddr)
1661 {
1662         return rocker_cmd_exec(rocker_port, NULL, 0,
1663                                rocker_cmd_get_port_settings_prep, NULL,
1664                                rocker_cmd_get_port_settings_macaddr_proc,
1665                                macaddr);
1666 }
1667
1668 static int rocker_cmd_get_port_settings_mode(struct rocker_port *rocker_port,
1669                                              u8 *p_mode)
1670 {
1671         return rocker_cmd_exec(rocker_port, NULL, 0,
1672                                rocker_cmd_get_port_settings_prep, NULL,
1673                                rocker_cmd_get_port_settings_mode_proc, p_mode);
1674 }
1675
1676 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1677                                                 struct ethtool_cmd *ecmd)
1678 {
1679         return rocker_cmd_exec(rocker_port, NULL, 0,
1680                                rocker_cmd_set_port_settings_ethtool_prep,
1681                                ecmd, NULL, NULL);
1682 }
1683
1684 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1685                                                 unsigned char *macaddr)
1686 {
1687         return rocker_cmd_exec(rocker_port, NULL, 0,
1688                                rocker_cmd_set_port_settings_macaddr_prep,
1689                                macaddr, NULL, NULL);
1690 }
1691
1692 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1693                                             int mtu)
1694 {
1695         return rocker_cmd_exec(rocker_port, NULL, 0,
1696                                rocker_cmd_set_port_settings_mtu_prep,
1697                                &mtu, NULL, NULL);
1698 }
1699
1700 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1701                                     struct switchdev_trans *trans,
1702                                     bool learning)
1703 {
1704         return rocker_cmd_exec(rocker_port, trans, 0,
1705                                rocker_cmd_set_port_learning_prep,
1706                                &learning, NULL, NULL);
1707 }
1708
1709 /**********************
1710  * Worlds manipulation
1711  **********************/
1712
1713 static struct rocker_world_ops *rocker_world_ops[] = {
1714         &rocker_ofdpa_ops,
1715 };
1716
1717 #define ROCKER_WORLD_OPS_LEN ARRAY_SIZE(rocker_world_ops)
1718
1719 static struct rocker_world_ops *rocker_world_ops_find(u8 mode)
1720 {
1721         int i;
1722
1723         for (i = 0; i < ROCKER_WORLD_OPS_LEN; i++)
1724                 if (rocker_world_ops[i]->mode == mode)
1725                         return rocker_world_ops[i];
1726         return NULL;
1727 }
1728
1729 static int rocker_world_init(struct rocker *rocker, u8 mode)
1730 {
1731         struct rocker_world_ops *wops;
1732         int err;
1733
1734         wops = rocker_world_ops_find(mode);
1735         if (!wops) {
1736                 dev_err(&rocker->pdev->dev, "port mode \"%d\" is not supported\n",
1737                         mode);
1738                 return -EINVAL;
1739         }
1740         rocker->wops = wops;
1741         rocker->wpriv = kzalloc(wops->priv_size, GFP_KERNEL);
1742         if (!rocker->wpriv)
1743                 return -ENOMEM;
1744         if (!wops->init)
1745                 return 0;
1746         err = wops->init(rocker);
1747         if (err)
1748                 kfree(rocker->wpriv);
1749         return err;
1750 }
1751
1752 static void rocker_world_fini(struct rocker *rocker)
1753 {
1754         struct rocker_world_ops *wops = rocker->wops;
1755
1756         if (!wops || !wops->fini)
1757                 return;
1758         wops->fini(rocker);
1759         kfree(rocker->wpriv);
1760 }
1761
1762 static int rocker_world_check_init(struct rocker_port *rocker_port)
1763 {
1764         struct rocker *rocker = rocker_port->rocker;
1765         u8 mode;
1766         int err;
1767
1768         err = rocker_cmd_get_port_settings_mode(rocker_port, &mode);
1769         if (err) {
1770                 dev_err(&rocker->pdev->dev, "failed to get port mode\n");
1771                 return err;
1772         }
1773         if (rocker->wops) {
1774                 if (rocker->wops->mode != mode) {
1775                         dev_err(&rocker->pdev->dev, "hardware has ports in different worlds, which is not supported\n");
1776                         return err;
1777                 }
1778                 return 0;
1779         }
1780         return rocker_world_init(rocker, mode);
1781 }
1782
1783 static int rocker_world_port_pre_init(struct rocker_port *rocker_port)
1784 {
1785         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1786         int err;
1787
1788         rocker_port->wpriv = kzalloc(wops->port_priv_size, GFP_KERNEL);
1789         if (!rocker_port->wpriv)
1790                 return -ENOMEM;
1791         if (!wops->port_pre_init)
1792                 return 0;
1793         err = wops->port_pre_init(rocker_port);
1794         if (err)
1795                 kfree(rocker_port->wpriv);
1796         return 0;
1797 }
1798
1799 static int rocker_world_port_init(struct rocker_port *rocker_port)
1800 {
1801         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1802
1803         if (!wops->port_init)
1804                 return 0;
1805         return wops->port_init(rocker_port);
1806 }
1807
1808 static void rocker_world_port_fini(struct rocker_port *rocker_port)
1809 {
1810         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1811
1812         if (!wops->port_fini)
1813                 return;
1814         wops->port_fini(rocker_port);
1815 }
1816
1817 static void rocker_world_port_post_fini(struct rocker_port *rocker_port)
1818 {
1819         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1820
1821         if (!wops->port_post_fini)
1822                 return;
1823         wops->port_post_fini(rocker_port);
1824         kfree(rocker_port->wpriv);
1825 }
1826
1827 static int rocker_world_port_open(struct rocker_port *rocker_port)
1828 {
1829         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1830
1831         if (!wops->port_open)
1832                 return 0;
1833         return wops->port_open(rocker_port);
1834 }
1835
1836 static void rocker_world_port_stop(struct rocker_port *rocker_port)
1837 {
1838         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1839
1840         if (!wops->port_stop)
1841                 return;
1842         wops->port_stop(rocker_port);
1843 }
1844
1845 static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port,
1846                                                 u8 state,
1847                                                 struct switchdev_trans *trans)
1848 {
1849         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1850
1851         if (!wops->port_attr_stp_state_set)
1852                 return 0;
1853         return wops->port_attr_stp_state_set(rocker_port, state, trans);
1854 }
1855
1856 static int
1857 rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
1858                                         unsigned long brport_flags,
1859                                         struct switchdev_trans *trans)
1860 {
1861         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1862
1863         if (!wops->port_attr_bridge_flags_set)
1864                 return 0;
1865         return wops->port_attr_bridge_flags_set(rocker_port, brport_flags,
1866                                                 trans);
1867 }
1868
1869 static int
1870 rocker_world_port_attr_bridge_flags_get(const struct rocker_port *rocker_port,
1871                                         unsigned long *p_brport_flags)
1872 {
1873         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1874
1875         if (!wops->port_attr_bridge_flags_get)
1876                 return 0;
1877         return wops->port_attr_bridge_flags_get(rocker_port, p_brport_flags);
1878 }
1879
1880 static int
1881 rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port,
1882                                               u32 ageing_time,
1883                                               struct switchdev_trans *trans)
1884
1885 {
1886         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1887
1888         if (!wops->port_attr_bridge_ageing_time_set)
1889                 return 0;
1890         return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time,
1891                                                       trans);
1892 }
1893
1894 static int
1895 rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port,
1896                                const struct switchdev_obj_port_vlan *vlan,
1897                                struct switchdev_trans *trans)
1898 {
1899         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1900
1901         if (!wops->port_obj_vlan_add)
1902                 return 0;
1903         return wops->port_obj_vlan_add(rocker_port, vlan, trans);
1904 }
1905
1906 static int
1907 rocker_world_port_obj_vlan_del(struct rocker_port *rocker_port,
1908                                const struct switchdev_obj_port_vlan *vlan)
1909 {
1910         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1911
1912         if (!wops->port_obj_vlan_del)
1913                 return 0;
1914         return wops->port_obj_vlan_del(rocker_port, vlan);
1915 }
1916
1917 static int
1918 rocker_world_port_obj_vlan_dump(const struct rocker_port *rocker_port,
1919                                 struct switchdev_obj_port_vlan *vlan,
1920                                 switchdev_obj_dump_cb_t *cb)
1921 {
1922         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1923
1924         if (!wops->port_obj_vlan_dump)
1925                 return 0;
1926         return wops->port_obj_vlan_dump(rocker_port, vlan, cb);
1927 }
1928
1929 static int
1930 rocker_world_port_obj_fib4_add(struct rocker_port *rocker_port,
1931                                const struct switchdev_obj_ipv4_fib *fib4,
1932                                struct switchdev_trans *trans)
1933 {
1934         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1935
1936         if (!wops->port_obj_fib4_add)
1937                 return 0;
1938         return wops->port_obj_fib4_add(rocker_port, fib4, trans);
1939 }
1940
1941 static int
1942 rocker_world_port_obj_fib4_del(struct rocker_port *rocker_port,
1943                                const struct switchdev_obj_ipv4_fib *fib4)
1944 {
1945         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1946
1947         if (!wops->port_obj_fib4_del)
1948                 return 0;
1949         return wops->port_obj_fib4_del(rocker_port, fib4);
1950 }
1951
1952 static int
1953 rocker_world_port_obj_fdb_add(struct rocker_port *rocker_port,
1954                               const struct switchdev_obj_port_fdb *fdb,
1955                               struct switchdev_trans *trans)
1956 {
1957         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1958
1959         if (!wops->port_obj_fdb_add)
1960                 return 0;
1961         return wops->port_obj_fdb_add(rocker_port, fdb, trans);
1962 }
1963
1964 static int
1965 rocker_world_port_obj_fdb_del(struct rocker_port *rocker_port,
1966                               const struct switchdev_obj_port_fdb *fdb)
1967 {
1968         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1969
1970         if (!wops->port_obj_fdb_del)
1971                 return 0;
1972         return wops->port_obj_fdb_del(rocker_port, fdb);
1973 }
1974
1975 static int
1976 rocker_world_port_obj_fdb_dump(const struct rocker_port *rocker_port,
1977                                struct switchdev_obj_port_fdb *fdb,
1978                                switchdev_obj_dump_cb_t *cb)
1979 {
1980         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1981
1982         if (!wops->port_obj_fdb_dump)
1983                 return 0;
1984         return wops->port_obj_fdb_dump(rocker_port, fdb, cb);
1985 }
1986
1987 static int rocker_world_port_master_linked(struct rocker_port *rocker_port,
1988                                            struct net_device *master)
1989 {
1990         struct rocker_world_ops *wops = rocker_port->rocker->wops;
1991
1992         if (!wops->port_master_linked)
1993                 return 0;
1994         return wops->port_master_linked(rocker_port, master);
1995 }
1996
1997 static int rocker_world_port_master_unlinked(struct rocker_port *rocker_port,
1998                                              struct net_device *master)
1999 {
2000         struct rocker_world_ops *wops = rocker_port->rocker->wops;
2001
2002         if (!wops->port_master_unlinked)
2003                 return 0;
2004         return wops->port_master_unlinked(rocker_port, master);
2005 }
2006
2007 static int rocker_world_port_neigh_update(struct rocker_port *rocker_port,
2008                                           struct neighbour *n)
2009 {
2010         struct rocker_world_ops *wops = rocker_port->rocker->wops;
2011
2012         if (!wops->port_neigh_update)
2013                 return 0;
2014         return wops->port_neigh_update(rocker_port, n);
2015 }
2016
2017 static int rocker_world_port_neigh_destroy(struct rocker_port *rocker_port,
2018                                            struct neighbour *n)
2019 {
2020         struct rocker_world_ops *wops = rocker_port->rocker->wops;
2021
2022         if (!wops->port_neigh_destroy)
2023                 return 0;
2024         return wops->port_neigh_destroy(rocker_port, n);
2025 }
2026
2027 static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
2028                                               const unsigned char *addr,
2029                                               __be16 vlan_id)
2030 {
2031         struct rocker_world_ops *wops = rocker_port->rocker->wops;
2032
2033         if (!wops->port_ev_mac_vlan_seen)
2034                 return 0;
2035         return wops->port_ev_mac_vlan_seen(rocker_port, addr, vlan_id);
2036 }
2037
2038 static int
2039 rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
2040                                 const struct rocker_flow_tbl_entry *entry)
2041 {
2042         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2043                                entry->key.ig_port.in_pport))
2044                 return -EMSGSIZE;
2045         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2046                                entry->key.ig_port.in_pport_mask))
2047                 return -EMSGSIZE;
2048         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2049                                entry->key.ig_port.goto_tbl))
2050                 return -EMSGSIZE;
2051
2052         return 0;
2053 }
2054
2055 static int
2056 rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
2057                              const struct rocker_flow_tbl_entry *entry)
2058 {
2059         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2060                                entry->key.vlan.in_pport))
2061                 return -EMSGSIZE;
2062         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2063                                 entry->key.vlan.vlan_id))
2064                 return -EMSGSIZE;
2065         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2066                                 entry->key.vlan.vlan_id_mask))
2067                 return -EMSGSIZE;
2068         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2069                                entry->key.vlan.goto_tbl))
2070                 return -EMSGSIZE;
2071         if (entry->key.vlan.untagged &&
2072             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
2073                                 entry->key.vlan.new_vlan_id))
2074                 return -EMSGSIZE;
2075
2076         return 0;
2077 }
2078
2079 static int
2080 rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
2081                                  const struct rocker_flow_tbl_entry *entry)
2082 {
2083         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2084                                entry->key.term_mac.in_pport))
2085                 return -EMSGSIZE;
2086         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2087                                entry->key.term_mac.in_pport_mask))
2088                 return -EMSGSIZE;
2089         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2090                                 entry->key.term_mac.eth_type))
2091                 return -EMSGSIZE;
2092         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2093                            ETH_ALEN, entry->key.term_mac.eth_dst))
2094                 return -EMSGSIZE;
2095         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2096                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
2097                 return -EMSGSIZE;
2098         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2099                                 entry->key.term_mac.vlan_id))
2100                 return -EMSGSIZE;
2101         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2102                                 entry->key.term_mac.vlan_id_mask))
2103                 return -EMSGSIZE;
2104         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2105                                entry->key.term_mac.goto_tbl))
2106                 return -EMSGSIZE;
2107         if (entry->key.term_mac.copy_to_cpu &&
2108             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2109                               entry->key.term_mac.copy_to_cpu))
2110                 return -EMSGSIZE;
2111
2112         return 0;
2113 }
2114
2115 static int
2116 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
2117                                       const struct rocker_flow_tbl_entry *entry)
2118 {
2119         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2120                                 entry->key.ucast_routing.eth_type))
2121                 return -EMSGSIZE;
2122         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
2123                                 entry->key.ucast_routing.dst4))
2124                 return -EMSGSIZE;
2125         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
2126                                 entry->key.ucast_routing.dst4_mask))
2127                 return -EMSGSIZE;
2128         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2129                                entry->key.ucast_routing.goto_tbl))
2130                 return -EMSGSIZE;
2131         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2132                                entry->key.ucast_routing.group_id))
2133                 return -EMSGSIZE;
2134
2135         return 0;
2136 }
2137
2138 static int
2139 rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2140                                const struct rocker_flow_tbl_entry *entry)
2141 {
2142         if (entry->key.bridge.has_eth_dst &&
2143             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2144                            ETH_ALEN, entry->key.bridge.eth_dst))
2145                 return -EMSGSIZE;
2146         if (entry->key.bridge.has_eth_dst_mask &&
2147             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2148                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
2149                 return -EMSGSIZE;
2150         if (entry->key.bridge.vlan_id &&
2151             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2152                                 entry->key.bridge.vlan_id))
2153                 return -EMSGSIZE;
2154         if (entry->key.bridge.tunnel_id &&
2155             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2156                                entry->key.bridge.tunnel_id))
2157                 return -EMSGSIZE;
2158         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2159                                entry->key.bridge.goto_tbl))
2160                 return -EMSGSIZE;
2161         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2162                                entry->key.bridge.group_id))
2163                 return -EMSGSIZE;
2164         if (entry->key.bridge.copy_to_cpu &&
2165             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2166                               entry->key.bridge.copy_to_cpu))
2167                 return -EMSGSIZE;
2168
2169         return 0;
2170 }
2171
2172 static int
2173 rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2174                             const struct rocker_flow_tbl_entry *entry)
2175 {
2176         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2177                                entry->key.acl.in_pport))
2178                 return -EMSGSIZE;
2179         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2180                                entry->key.acl.in_pport_mask))
2181                 return -EMSGSIZE;
2182         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2183                            ETH_ALEN, entry->key.acl.eth_src))
2184                 return -EMSGSIZE;
2185         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2186                            ETH_ALEN, entry->key.acl.eth_src_mask))
2187                 return -EMSGSIZE;
2188         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2189                            ETH_ALEN, entry->key.acl.eth_dst))
2190                 return -EMSGSIZE;
2191         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2192                            ETH_ALEN, entry->key.acl.eth_dst_mask))
2193                 return -EMSGSIZE;
2194         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2195                                 entry->key.acl.eth_type))
2196                 return -EMSGSIZE;
2197         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2198                                 entry->key.acl.vlan_id))
2199                 return -EMSGSIZE;
2200         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2201                                 entry->key.acl.vlan_id_mask))
2202                 return -EMSGSIZE;
2203
2204         switch (ntohs(entry->key.acl.eth_type)) {
2205         case ETH_P_IP:
2206         case ETH_P_IPV6:
2207                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2208                                       entry->key.acl.ip_proto))
2209                         return -EMSGSIZE;
2210                 if (rocker_tlv_put_u8(desc_info,
2211                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2212                                       entry->key.acl.ip_proto_mask))
2213                         return -EMSGSIZE;
2214                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2215                                       entry->key.acl.ip_tos & 0x3f))
2216                         return -EMSGSIZE;
2217                 if (rocker_tlv_put_u8(desc_info,
2218                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2219                                       entry->key.acl.ip_tos_mask & 0x3f))
2220                         return -EMSGSIZE;
2221                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2222                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
2223                         return -EMSGSIZE;
2224                 if (rocker_tlv_put_u8(desc_info,
2225                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2226                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2227                         return -EMSGSIZE;
2228                 break;
2229         }
2230
2231         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2232             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2233                                entry->key.acl.group_id))
2234                 return -EMSGSIZE;
2235
2236         return 0;
2237 }
2238
2239 static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
2240                                    struct rocker_desc_info *desc_info,
2241                                    void *priv)
2242 {
2243         const struct rocker_flow_tbl_entry *entry = priv;
2244         struct rocker_tlv *cmd_info;
2245         int err = 0;
2246
2247         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2248                 return -EMSGSIZE;
2249         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2250         if (!cmd_info)
2251                 return -EMSGSIZE;
2252         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2253                                entry->key.tbl_id))
2254                 return -EMSGSIZE;
2255         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2256                                entry->key.priority))
2257                 return -EMSGSIZE;
2258         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2259                 return -EMSGSIZE;
2260         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2261                                entry->cookie))
2262                 return -EMSGSIZE;
2263
2264         switch (entry->key.tbl_id) {
2265         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2266                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2267                 break;
2268         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2269                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2270                 break;
2271         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2272                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2273                 break;
2274         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2275                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2276                 break;
2277         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2278                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2279                 break;
2280         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2281                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2282                 break;
2283         default:
2284                 err = -ENOTSUPP;
2285                 break;
2286         }
2287
2288         if (err)
2289                 return err;
2290
2291         rocker_tlv_nest_end(desc_info, cmd_info);
2292
2293         return 0;
2294 }
2295
2296 static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
2297                                    struct rocker_desc_info *desc_info,
2298                                    void *priv)
2299 {
2300         const struct rocker_flow_tbl_entry *entry = priv;
2301         struct rocker_tlv *cmd_info;
2302
2303         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2304                 return -EMSGSIZE;
2305         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2306         if (!cmd_info)
2307                 return -EMSGSIZE;
2308         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2309                                entry->cookie))
2310                 return -EMSGSIZE;
2311         rocker_tlv_nest_end(desc_info, cmd_info);
2312
2313         return 0;
2314 }
2315
2316 static int
2317 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2318                                       struct rocker_group_tbl_entry *entry)
2319 {
2320         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2321                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2322                 return -EMSGSIZE;
2323         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2324                               entry->l2_interface.pop_vlan))
2325                 return -EMSGSIZE;
2326
2327         return 0;
2328 }
2329
2330 static int
2331 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2332                                     const struct rocker_group_tbl_entry *entry)
2333 {
2334         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2335                                entry->l2_rewrite.group_id))
2336                 return -EMSGSIZE;
2337         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2338             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2339                            ETH_ALEN, entry->l2_rewrite.eth_src))
2340                 return -EMSGSIZE;
2341         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2342             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2343                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2344                 return -EMSGSIZE;
2345         if (entry->l2_rewrite.vlan_id &&
2346             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2347                                 entry->l2_rewrite.vlan_id))
2348                 return -EMSGSIZE;
2349
2350         return 0;
2351 }
2352
2353 static int
2354 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2355                                    const struct rocker_group_tbl_entry *entry)
2356 {
2357         int i;
2358         struct rocker_tlv *group_ids;
2359
2360         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2361                                entry->group_count))
2362                 return -EMSGSIZE;
2363
2364         group_ids = rocker_tlv_nest_start(desc_info,
2365                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2366         if (!group_ids)
2367                 return -EMSGSIZE;
2368
2369         for (i = 0; i < entry->group_count; i++)
2370                 /* Note TLV array is 1-based */
2371                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2372                         return -EMSGSIZE;
2373
2374         rocker_tlv_nest_end(desc_info, group_ids);
2375
2376         return 0;
2377 }
2378
2379 static int
2380 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2381                                     const struct rocker_group_tbl_entry *entry)
2382 {
2383         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2384             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2385                            ETH_ALEN, entry->l3_unicast.eth_src))
2386                 return -EMSGSIZE;
2387         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2388             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2389                            ETH_ALEN, entry->l3_unicast.eth_dst))
2390                 return -EMSGSIZE;
2391         if (entry->l3_unicast.vlan_id &&
2392             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2393                                 entry->l3_unicast.vlan_id))
2394                 return -EMSGSIZE;
2395         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2396                               entry->l3_unicast.ttl_check))
2397                 return -EMSGSIZE;
2398         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2399                                entry->l3_unicast.group_id))
2400                 return -EMSGSIZE;
2401
2402         return 0;
2403 }
2404
2405 static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
2406                                     struct rocker_desc_info *desc_info,
2407                                     void *priv)
2408 {
2409         struct rocker_group_tbl_entry *entry = priv;
2410         struct rocker_tlv *cmd_info;
2411         int err = 0;
2412
2413         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2414                 return -EMSGSIZE;
2415         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2416         if (!cmd_info)
2417                 return -EMSGSIZE;
2418
2419         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2420                                entry->group_id))
2421                 return -EMSGSIZE;
2422
2423         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2424         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2425                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2426                 break;
2427         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2428                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2429                 break;
2430         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2431         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2432                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2433                 break;
2434         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2435                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2436                 break;
2437         default:
2438                 err = -ENOTSUPP;
2439                 break;
2440         }
2441
2442         if (err)
2443                 return err;
2444
2445         rocker_tlv_nest_end(desc_info, cmd_info);
2446
2447         return 0;
2448 }
2449
2450 static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
2451                                     struct rocker_desc_info *desc_info,
2452                                     void *priv)
2453 {
2454         const struct rocker_group_tbl_entry *entry = priv;
2455         struct rocker_tlv *cmd_info;
2456
2457         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2458                 return -EMSGSIZE;
2459         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2460         if (!cmd_info)
2461                 return -EMSGSIZE;
2462         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2463                                entry->group_id))
2464                 return -EMSGSIZE;
2465         rocker_tlv_nest_end(desc_info, cmd_info);
2466
2467         return 0;
2468 }
2469
2470 /***************************************************
2471  * Flow, group, FDB, internal VLAN and neigh tables
2472  ***************************************************/
2473
2474 static int rocker_init_tbls(struct rocker *rocker)
2475 {
2476         hash_init(rocker->flow_tbl);
2477         spin_lock_init(&rocker->flow_tbl_lock);
2478
2479         hash_init(rocker->group_tbl);
2480         spin_lock_init(&rocker->group_tbl_lock);
2481
2482         hash_init(rocker->fdb_tbl);
2483         spin_lock_init(&rocker->fdb_tbl_lock);
2484
2485         hash_init(rocker->internal_vlan_tbl);
2486         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2487
2488         hash_init(rocker->neigh_tbl);
2489         spin_lock_init(&rocker->neigh_tbl_lock);
2490
2491         return 0;
2492 }
2493
2494 static void rocker_free_tbls(struct rocker *rocker)
2495 {
2496         unsigned long flags;
2497         struct rocker_flow_tbl_entry *flow_entry;
2498         struct rocker_group_tbl_entry *group_entry;
2499         struct rocker_fdb_tbl_entry *fdb_entry;
2500         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2501         struct rocker_neigh_tbl_entry *neigh_entry;
2502         struct hlist_node *tmp;
2503         int bkt;
2504
2505         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2506         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2507                 hash_del(&flow_entry->entry);
2508         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2509
2510         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2511         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2512                 hash_del(&group_entry->entry);
2513         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2514
2515         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2516         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2517                 hash_del(&fdb_entry->entry);
2518         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2519
2520         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2521         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2522                            tmp, internal_vlan_entry, entry)
2523                 hash_del(&internal_vlan_entry->entry);
2524         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2525
2526         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2527         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2528                 hash_del(&neigh_entry->entry);
2529         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2530 }
2531
2532 static struct rocker_flow_tbl_entry *
2533 rocker_flow_tbl_find(const struct rocker *rocker,
2534                      const struct rocker_flow_tbl_entry *match)
2535 {
2536         struct rocker_flow_tbl_entry *found;
2537         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2538
2539         hash_for_each_possible(rocker->flow_tbl, found,
2540                                entry, match->key_crc32) {
2541                 if (memcmp(&found->key, &match->key, key_len) == 0)
2542                         return found;
2543         }
2544
2545         return NULL;
2546 }
2547
2548 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2549                                struct switchdev_trans *trans, int flags,
2550                                struct rocker_flow_tbl_entry *match)
2551 {
2552         struct rocker *rocker = rocker_port->rocker;
2553         struct rocker_flow_tbl_entry *found;
2554         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2555         unsigned long lock_flags;
2556
2557         match->key_crc32 = crc32(~0, &match->key, key_len);
2558
2559         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2560
2561         found = rocker_flow_tbl_find(rocker, match);
2562
2563         if (found) {
2564                 match->cookie = found->cookie;
2565                 if (!switchdev_trans_ph_prepare(trans))
2566                         hash_del(&found->entry);
2567                 rocker_kfree(trans, found);
2568                 found = match;
2569                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2570         } else {
2571                 found = match;
2572                 found->cookie = rocker->flow_tbl_next_cookie++;
2573                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2574         }
2575
2576         if (!switchdev_trans_ph_prepare(trans))
2577                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2578
2579         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2580
2581         return rocker_cmd_exec(rocker_port, trans, flags,
2582                                rocker_cmd_flow_tbl_add, found, NULL, NULL);
2583 }
2584
2585 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2586                                struct switchdev_trans *trans, int flags,
2587                                struct rocker_flow_tbl_entry *match)
2588 {
2589         struct rocker *rocker = rocker_port->rocker;
2590         struct rocker_flow_tbl_entry *found;
2591         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2592         unsigned long lock_flags;
2593         int err = 0;
2594
2595         match->key_crc32 = crc32(~0, &match->key, key_len);
2596
2597         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2598
2599         found = rocker_flow_tbl_find(rocker, match);
2600
2601         if (found) {
2602                 if (!switchdev_trans_ph_prepare(trans))
2603                         hash_del(&found->entry);
2604                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2605         }
2606
2607         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2608
2609         rocker_kfree(trans, match);
2610
2611         if (found) {
2612                 err = rocker_cmd_exec(rocker_port, trans, 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         return rocker_cmd_exec(rocker_port, trans, flags,
2903                                rocker_cmd_group_tbl_add, found, NULL, NULL);
2904 }
2905
2906 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2907                                 struct switchdev_trans *trans, int flags,
2908                                 struct rocker_group_tbl_entry *match)
2909 {
2910         struct rocker *rocker = rocker_port->rocker;
2911         struct rocker_group_tbl_entry *found;
2912         unsigned long lock_flags;
2913         int err = 0;
2914
2915         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2916
2917         found = rocker_group_tbl_find(rocker, match);
2918
2919         if (found) {
2920                 if (!switchdev_trans_ph_prepare(trans))
2921                         hash_del(&found->entry);
2922                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2923         }
2924
2925         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2926
2927         rocker_group_tbl_entry_free(trans, match);
2928
2929         if (found) {
2930                 err = rocker_cmd_exec(rocker_port, trans, flags,
2931                                       rocker_cmd_group_tbl_del,
2932                                       found, NULL, NULL);
2933                 rocker_group_tbl_entry_free(trans, found);
2934         }
2935
2936         return err;
2937 }
2938
2939 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2940                                struct switchdev_trans *trans, int flags,
2941                                struct rocker_group_tbl_entry *entry)
2942 {
2943         if (flags & ROCKER_OP_FLAG_REMOVE)
2944                 return rocker_group_tbl_del(rocker_port, trans, flags, entry);
2945         else
2946                 return rocker_group_tbl_add(rocker_port, trans, flags, entry);
2947 }
2948
2949 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2950                                      struct switchdev_trans *trans, int flags,
2951                                      __be16 vlan_id, u32 out_pport,
2952                                      int pop_vlan)
2953 {
2954         struct rocker_group_tbl_entry *entry;
2955
2956         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2957         if (!entry)
2958                 return -ENOMEM;
2959
2960         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2961         entry->l2_interface.pop_vlan = pop_vlan;
2962
2963         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2964 }
2965
2966 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2967                                    struct switchdev_trans *trans,
2968                                    int flags, u8 group_count,
2969                                    const u32 *group_ids, u32 group_id)
2970 {
2971         struct rocker_group_tbl_entry *entry;
2972
2973         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
2974         if (!entry)
2975                 return -ENOMEM;
2976
2977         entry->group_id = group_id;
2978         entry->group_count = group_count;
2979
2980         entry->group_ids = rocker_kcalloc(trans, flags,
2981                                           group_count, sizeof(u32));
2982         if (!entry->group_ids) {
2983                 rocker_kfree(trans, entry);
2984                 return -ENOMEM;
2985         }
2986         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2987
2988         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2989 }
2990
2991 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2992                                  struct switchdev_trans *trans, int flags,
2993                                  __be16 vlan_id, u8 group_count,
2994                                  const u32 *group_ids, u32 group_id)
2995 {
2996         return rocker_group_l2_fan_out(rocker_port, trans, flags,
2997                                        group_count, group_ids,
2998                                        group_id);
2999 }
3000
3001 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
3002                                    struct switchdev_trans *trans, int flags,
3003                                    u32 index, const u8 *src_mac, const u8 *dst_mac,
3004                                    __be16 vlan_id, bool ttl_check, u32 pport)
3005 {
3006         struct rocker_group_tbl_entry *entry;
3007
3008         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
3009         if (!entry)
3010                 return -ENOMEM;
3011
3012         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
3013         if (src_mac)
3014                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
3015         if (dst_mac)
3016                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
3017         entry->l3_unicast.vlan_id = vlan_id;
3018         entry->l3_unicast.ttl_check = ttl_check;
3019         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
3020
3021         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
3022 }
3023
3024 static struct rocker_neigh_tbl_entry *
3025 rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
3026 {
3027         struct rocker_neigh_tbl_entry *found;
3028
3029         hash_for_each_possible(rocker->neigh_tbl, found,
3030                                entry, be32_to_cpu(ip_addr))
3031                 if (found->ip_addr == ip_addr)
3032                         return found;
3033
3034         return NULL;
3035 }
3036
3037 static void _rocker_neigh_add(struct rocker *rocker,
3038                               struct switchdev_trans *trans,
3039                               struct rocker_neigh_tbl_entry *entry)
3040 {
3041         if (!switchdev_trans_ph_commit(trans))
3042                 entry->index = rocker->neigh_tbl_next_index++;
3043         if (switchdev_trans_ph_prepare(trans))
3044                 return;
3045         entry->ref_count++;
3046         hash_add(rocker->neigh_tbl, &entry->entry,
3047                  be32_to_cpu(entry->ip_addr));
3048 }
3049
3050 static void _rocker_neigh_del(struct switchdev_trans *trans,
3051                               struct rocker_neigh_tbl_entry *entry)
3052 {
3053         if (switchdev_trans_ph_prepare(trans))
3054                 return;
3055         if (--entry->ref_count == 0) {
3056                 hash_del(&entry->entry);
3057                 rocker_kfree(trans, entry);
3058         }
3059 }
3060
3061 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
3062                                  struct switchdev_trans *trans,
3063                                  const u8 *eth_dst, bool ttl_check)
3064 {
3065         if (eth_dst) {
3066                 ether_addr_copy(entry->eth_dst, eth_dst);
3067                 entry->ttl_check = ttl_check;
3068         } else if (!switchdev_trans_ph_prepare(trans)) {
3069                 entry->ref_count++;
3070         }
3071 }
3072
3073 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
3074                                   struct switchdev_trans *trans,
3075                                   int flags, __be32 ip_addr, const u8 *eth_dst)
3076 {
3077         struct rocker *rocker = rocker_port->rocker;
3078         struct rocker_neigh_tbl_entry *entry;
3079         struct rocker_neigh_tbl_entry *found;
3080         unsigned long lock_flags;
3081         __be16 eth_type = htons(ETH_P_IP);
3082         enum rocker_of_dpa_table_id goto_tbl =
3083                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3084         u32 group_id;
3085         u32 priority = 0;
3086         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3087         bool updating;
3088         bool removing;
3089         int err = 0;
3090
3091         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
3092         if (!entry)
3093                 return -ENOMEM;
3094
3095         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3096
3097         found = rocker_neigh_tbl_find(rocker, ip_addr);
3098
3099         updating = found && adding;
3100         removing = found && !adding;
3101         adding = !found && adding;
3102
3103         if (adding) {
3104                 entry->ip_addr = ip_addr;
3105                 entry->dev = rocker_port->dev;
3106                 ether_addr_copy(entry->eth_dst, eth_dst);
3107                 entry->ttl_check = true;
3108                 _rocker_neigh_add(rocker, trans, entry);
3109         } else if (removing) {
3110                 memcpy(entry, found, sizeof(*entry));
3111                 _rocker_neigh_del(trans, found);
3112         } else if (updating) {
3113                 _rocker_neigh_update(found, trans, eth_dst, true);
3114                 memcpy(entry, found, sizeof(*entry));
3115         } else {
3116                 err = -ENOENT;
3117         }
3118
3119         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3120
3121         if (err)
3122                 goto err_out;
3123
3124         /* For each active neighbor, we have an L3 unicast group and
3125          * a /32 route to the neighbor, which uses the L3 unicast
3126          * group.  The L3 unicast group can also be referred to by
3127          * other routes' nexthops.
3128          */
3129
3130         err = rocker_group_l3_unicast(rocker_port, trans, flags,
3131                                       entry->index,
3132                                       rocker_port->dev->dev_addr,
3133                                       entry->eth_dst,
3134                                       rocker_port->internal_vlan_id,
3135                                       entry->ttl_check,
3136                                       rocker_port->pport);
3137         if (err) {
3138                 netdev_err(rocker_port->dev,
3139                            "Error (%d) L3 unicast group index %d\n",
3140                            err, entry->index);
3141                 goto err_out;
3142         }
3143
3144         if (adding || removing) {
3145                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3146                 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3147                                                      eth_type, ip_addr,
3148                                                      inet_make_mask(32),
3149                                                      priority, goto_tbl,
3150                                                      group_id, flags);
3151
3152                 if (err)
3153                         netdev_err(rocker_port->dev,
3154                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3155                                    err, &entry->ip_addr, group_id);
3156         }
3157
3158 err_out:
3159         if (!adding)
3160                 rocker_kfree(trans, entry);
3161
3162         return err;
3163 }
3164
3165 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3166                                     struct switchdev_trans *trans,
3167                                     __be32 ip_addr)
3168 {
3169         struct net_device *dev = rocker_port->dev;
3170         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3171         int err = 0;
3172
3173         if (!n) {
3174                 n = neigh_create(&arp_tbl, &ip_addr, dev);
3175                 if (IS_ERR(n))
3176                         return IS_ERR(n);
3177         }
3178
3179         /* If the neigh is already resolved, then go ahead and
3180          * install the entry, otherwise start the ARP process to
3181          * resolve the neigh.
3182          */
3183
3184         if (n->nud_state & NUD_VALID)
3185                 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3186                                              ip_addr, n->ha);
3187         else
3188                 neigh_event_send(n, NULL);
3189
3190         neigh_release(n);
3191         return err;
3192 }
3193
3194 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3195                                struct switchdev_trans *trans, int flags,
3196                                __be32 ip_addr, u32 *index)
3197 {
3198         struct rocker *rocker = rocker_port->rocker;
3199         struct rocker_neigh_tbl_entry *entry;
3200         struct rocker_neigh_tbl_entry *found;
3201         unsigned long lock_flags;
3202         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3203         bool updating;
3204         bool removing;
3205         bool resolved = true;
3206         int err = 0;
3207
3208         entry = rocker_kzalloc(trans, flags, sizeof(*entry));
3209         if (!entry)
3210                 return -ENOMEM;
3211
3212         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3213
3214         found = rocker_neigh_tbl_find(rocker, ip_addr);
3215         if (found)
3216                 *index = found->index;
3217
3218         updating = found && adding;
3219         removing = found && !adding;
3220         adding = !found && adding;
3221
3222         if (adding) {
3223                 entry->ip_addr = ip_addr;
3224                 entry->dev = rocker_port->dev;
3225                 _rocker_neigh_add(rocker, trans, entry);
3226                 *index = entry->index;
3227                 resolved = false;
3228         } else if (removing) {
3229                 _rocker_neigh_del(trans, found);
3230         } else if (updating) {
3231                 _rocker_neigh_update(found, trans, NULL, false);
3232                 resolved = !is_zero_ether_addr(found->eth_dst);
3233         } else {
3234                 err = -ENOENT;
3235         }
3236
3237         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3238
3239         if (!adding)
3240                 rocker_kfree(trans, entry);
3241
3242         if (err)
3243                 return err;
3244
3245         /* Resolved means neigh ip_addr is resolved to neigh mac. */
3246
3247         if (!resolved)
3248                 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3249
3250         return err;
3251 }
3252
3253 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3254                                         struct switchdev_trans *trans,
3255                                         int flags, __be16 vlan_id)
3256 {
3257         struct rocker_port *p;
3258         const struct rocker *rocker = rocker_port->rocker;
3259         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3260         u32 *group_ids;
3261         u8 group_count = 0;
3262         int err = 0;
3263         int i;
3264
3265         group_ids = rocker_kcalloc(trans, flags,
3266                                    rocker->port_count, sizeof(u32));
3267         if (!group_ids)
3268                 return -ENOMEM;
3269
3270         /* Adjust the flood group for this VLAN.  The flood group
3271          * references an L2 interface group for each port in this
3272          * VLAN.
3273          */
3274
3275         for (i = 0; i < rocker->port_count; i++) {
3276                 p = rocker->ports[i];
3277                 if (!p)
3278                         continue;
3279                 if (!rocker_port_is_bridged(p))
3280                         continue;
3281                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3282                         group_ids[group_count++] =
3283                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3284                 }
3285         }
3286
3287         /* If there are no bridged ports in this VLAN, we're done */
3288         if (group_count == 0)
3289                 goto no_ports_in_vlan;
3290
3291         err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3292                                     group_count, group_ids, group_id);
3293         if (err)
3294                 netdev_err(rocker_port->dev,
3295                            "Error (%d) port VLAN l2 flood group\n", err);
3296
3297 no_ports_in_vlan:
3298         rocker_kfree(trans, group_ids);
3299         return err;
3300 }
3301
3302 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3303                                       struct switchdev_trans *trans, int flags,
3304                                       __be16 vlan_id, bool pop_vlan)
3305 {
3306         const struct rocker *rocker = rocker_port->rocker;
3307         struct rocker_port *p;
3308         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3309         u32 out_pport;
3310         int ref = 0;
3311         int err;
3312         int i;
3313
3314         /* An L2 interface group for this port in this VLAN, but
3315          * only when port STP state is LEARNING|FORWARDING.
3316          */
3317
3318         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3319             rocker_port->stp_state == BR_STATE_FORWARDING) {
3320                 out_pport = rocker_port->pport;
3321                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3322                                                 vlan_id, out_pport, pop_vlan);
3323                 if (err) {
3324                         netdev_err(rocker_port->dev,
3325                                    "Error (%d) port VLAN l2 group for pport %d\n",
3326                                    err, out_pport);
3327                         return err;
3328                 }
3329         }
3330
3331         /* An L2 interface group for this VLAN to CPU port.
3332          * Add when first port joins this VLAN and destroy when
3333          * last port leaves this VLAN.
3334          */
3335
3336         for (i = 0; i < rocker->port_count; i++) {
3337                 p = rocker->ports[i];
3338                 if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
3339                         ref++;
3340         }
3341
3342         if ((!adding || ref != 1) && (adding || ref != 0))
3343                 return 0;
3344
3345         out_pport = 0;
3346         err = rocker_group_l2_interface(rocker_port, trans, flags,
3347                                         vlan_id, out_pport, pop_vlan);
3348         if (err) {
3349                 netdev_err(rocker_port->dev,
3350                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3351                 return err;
3352         }
3353
3354         return 0;
3355 }
3356
3357 static struct rocker_ctrl {
3358         const u8 *eth_dst;
3359         const u8 *eth_dst_mask;
3360         __be16 eth_type;
3361         bool acl;
3362         bool bridge;
3363         bool term;
3364         bool copy_to_cpu;
3365 } rocker_ctrls[] = {
3366         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3367                 /* pass link local multicast pkts up to CPU for filtering */
3368                 .eth_dst = ll_mac,
3369                 .eth_dst_mask = ll_mask,
3370                 .acl = true,
3371         },
3372         [ROCKER_CTRL_LOCAL_ARP] = {
3373                 /* pass local ARP pkts up to CPU */
3374                 .eth_dst = zero_mac,
3375                 .eth_dst_mask = zero_mac,
3376                 .eth_type = htons(ETH_P_ARP),
3377                 .acl = true,
3378         },
3379         [ROCKER_CTRL_IPV4_MCAST] = {
3380                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3381                 .eth_dst = ipv4_mcast,
3382                 .eth_dst_mask = ipv4_mask,
3383                 .eth_type = htons(ETH_P_IP),
3384                 .term  = true,
3385                 .copy_to_cpu = true,
3386         },
3387         [ROCKER_CTRL_IPV6_MCAST] = {
3388                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3389                 .eth_dst = ipv6_mcast,
3390                 .eth_dst_mask = ipv6_mask,
3391                 .eth_type = htons(ETH_P_IPV6),
3392                 .term  = true,
3393                 .copy_to_cpu = true,
3394         },
3395         [ROCKER_CTRL_DFLT_BRIDGING] = {
3396                 /* flood any pkts on vlan */
3397                 .bridge = true,
3398                 .copy_to_cpu = true,
3399         },
3400         [ROCKER_CTRL_DFLT_OVS] = {
3401                 /* pass all pkts up to CPU */
3402                 .eth_dst = zero_mac,
3403                 .eth_dst_mask = zero_mac,
3404                 .acl = true,
3405         },
3406 };
3407
3408 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3409                                      struct switchdev_trans *trans, int flags,
3410                                      const struct rocker_ctrl *ctrl, __be16 vlan_id)
3411 {
3412         u32 in_pport = rocker_port->pport;
3413         u32 in_pport_mask = 0xffffffff;
3414         u32 out_pport = 0;
3415         const u8 *eth_src = NULL;
3416         const u8 *eth_src_mask = NULL;
3417         __be16 vlan_id_mask = htons(0xffff);
3418         u8 ip_proto = 0;
3419         u8 ip_proto_mask = 0;
3420         u8 ip_tos = 0;
3421         u8 ip_tos_mask = 0;
3422         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3423         int err;
3424
3425         err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3426                                   in_pport, in_pport_mask,
3427                                   eth_src, eth_src_mask,
3428                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3429                                   ctrl->eth_type,
3430                                   vlan_id, vlan_id_mask,
3431                                   ip_proto, ip_proto_mask,
3432                                   ip_tos, ip_tos_mask,
3433                                   group_id);
3434
3435         if (err)
3436                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3437
3438         return err;
3439 }
3440
3441 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3442                                         struct switchdev_trans *trans,
3443                                         int flags,
3444                                         const struct rocker_ctrl *ctrl,
3445                                         __be16 vlan_id)
3446 {
3447         enum rocker_of_dpa_table_id goto_tbl =
3448                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3449         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3450         u32 tunnel_id = 0;
3451         int err;
3452
3453         if (!rocker_port_is_bridged(rocker_port))
3454                 return 0;
3455
3456         err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3457                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3458                                      vlan_id, tunnel_id,
3459                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3460
3461         if (err)
3462                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3463
3464         return err;
3465 }
3466
3467 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3468                                       struct switchdev_trans *trans, int flags,
3469                                       const struct rocker_ctrl *ctrl, __be16 vlan_id)
3470 {
3471         u32 in_pport_mask = 0xffffffff;
3472         __be16 vlan_id_mask = htons(0xffff);
3473         int err;
3474
3475         if (ntohs(vlan_id) == 0)
3476                 vlan_id = rocker_port->internal_vlan_id;
3477
3478         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3479                                        rocker_port->pport, in_pport_mask,
3480                                        ctrl->eth_type, ctrl->eth_dst,
3481                                        ctrl->eth_dst_mask, vlan_id,
3482                                        vlan_id_mask, ctrl->copy_to_cpu,
3483                                        flags);
3484
3485         if (err)
3486                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3487
3488         return err;
3489 }
3490
3491 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3492                                  struct switchdev_trans *trans, int flags,
3493                                  const struct rocker_ctrl *ctrl, __be16 vlan_id)
3494 {
3495         if (ctrl->acl)
3496                 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3497                                                  ctrl, vlan_id);
3498         if (ctrl->bridge)
3499                 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3500                                                     ctrl, vlan_id);
3501
3502         if (ctrl->term)
3503                 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3504                                                   ctrl, vlan_id);
3505
3506         return -EOPNOTSUPP;
3507 }
3508
3509 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3510                                      struct switchdev_trans *trans, int flags,
3511                                      __be16 vlan_id)
3512 {
3513         int err = 0;
3514         int i;
3515
3516         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3517                 if (rocker_port->ctrls[i]) {
3518                         err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3519                                                     &rocker_ctrls[i], vlan_id);
3520                         if (err)
3521                                 return err;
3522                 }
3523         }
3524
3525         return err;
3526 }
3527
3528 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3529                             struct switchdev_trans *trans, int flags,
3530                             const struct rocker_ctrl *ctrl)
3531 {
3532         u16 vid;
3533         int err = 0;
3534
3535         for (vid = 1; vid < VLAN_N_VID; vid++) {
3536                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3537                         continue;
3538                 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3539                                             ctrl, htons(vid));
3540                 if (err)
3541                         break;
3542         }
3543
3544         return err;
3545 }
3546
3547 static int rocker_port_vlan(struct rocker_port *rocker_port,
3548                             struct switchdev_trans *trans, int flags, u16 vid)
3549 {
3550         enum rocker_of_dpa_table_id goto_tbl =
3551                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3552         u32 in_pport = rocker_port->pport;
3553         __be16 vlan_id = htons(vid);
3554         __be16 vlan_id_mask = htons(0xffff);
3555         __be16 internal_vlan_id;
3556         bool untagged;
3557         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3558         int err;
3559
3560         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3561
3562         if (adding && test_bit(ntohs(internal_vlan_id),
3563                                rocker_port->vlan_bitmap))
3564                 return 0; /* already added */
3565         else if (!adding && !test_bit(ntohs(internal_vlan_id),
3566                                       rocker_port->vlan_bitmap))
3567                 return 0; /* already removed */
3568
3569         change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3570
3571         if (adding) {
3572                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3573                                                 internal_vlan_id);
3574                 if (err) {
3575                         netdev_err(rocker_port->dev,
3576                                    "Error (%d) port ctrl vlan add\n", err);
3577                         goto err_out;
3578                 }
3579         }
3580
3581         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3582                                          internal_vlan_id, untagged);
3583         if (err) {
3584                 netdev_err(rocker_port->dev,
3585                            "Error (%d) port VLAN l2 groups\n", err);
3586                 goto err_out;
3587         }
3588
3589         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3590                                            internal_vlan_id);
3591         if (err) {
3592                 netdev_err(rocker_port->dev,
3593                            "Error (%d) port VLAN l2 flood group\n", err);
3594                 goto err_out;
3595         }
3596
3597         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3598                                    in_pport, vlan_id, vlan_id_mask,
3599                                    goto_tbl, untagged, internal_vlan_id);
3600         if (err)
3601                 netdev_err(rocker_port->dev,
3602                            "Error (%d) port VLAN table\n", err);
3603
3604 err_out:
3605         if (switchdev_trans_ph_prepare(trans))
3606                 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3607
3608         return err;
3609 }
3610
3611 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3612                               struct switchdev_trans *trans, int flags)
3613 {
3614         enum rocker_of_dpa_table_id goto_tbl;
3615         u32 in_pport;
3616         u32 in_pport_mask;
3617         int err;
3618
3619         /* Normal Ethernet Frames.  Matches pkts from any local physical
3620          * ports.  Goto VLAN tbl.
3621          */
3622
3623         in_pport = 0;
3624         in_pport_mask = 0xffff0000;
3625         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3626
3627         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3628                                       in_pport, in_pport_mask,
3629                                       goto_tbl);
3630         if (err)
3631                 netdev_err(rocker_port->dev,
3632                            "Error (%d) ingress port table entry\n", err);
3633
3634         return err;
3635 }
3636
3637 struct rocker_fdb_learn_work {
3638         struct work_struct work;
3639         struct rocker_port *rocker_port;
3640         struct switchdev_trans *trans;
3641         int flags;
3642         u8 addr[ETH_ALEN];
3643         u16 vid;
3644 };
3645
3646 static void rocker_port_fdb_learn_work(struct work_struct *work)
3647 {
3648         const struct rocker_fdb_learn_work *lw =
3649                 container_of(work, struct rocker_fdb_learn_work, work);
3650         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3651         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3652         struct switchdev_notifier_fdb_info info;
3653
3654         info.addr = lw->addr;
3655         info.vid = lw->vid;
3656
3657         rtnl_lock();
3658         if (learned && removing)
3659                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3660                                          lw->rocker_port->dev, &info.info);
3661         else if (learned && !removing)
3662                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3663                                          lw->rocker_port->dev, &info.info);
3664         rtnl_unlock();
3665
3666         rocker_kfree(lw->trans, work);
3667 }
3668
3669 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3670                                  struct switchdev_trans *trans, int flags,
3671                                  const u8 *addr, __be16 vlan_id)
3672 {
3673         struct rocker_fdb_learn_work *lw;
3674         enum rocker_of_dpa_table_id goto_tbl =
3675                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3676         u32 out_pport = rocker_port->pport;
3677         u32 tunnel_id = 0;
3678         u32 group_id = ROCKER_GROUP_NONE;
3679         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3680         bool copy_to_cpu = false;
3681         int err;
3682
3683         if (rocker_port_is_bridged(rocker_port))
3684                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3685
3686         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3687                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3688                                              NULL, vlan_id, tunnel_id, goto_tbl,
3689                                              group_id, copy_to_cpu);
3690                 if (err)
3691                         return err;
3692         }
3693
3694         if (!syncing)
3695                 return 0;
3696
3697         if (!rocker_port_is_bridged(rocker_port))
3698                 return 0;
3699
3700         lw = rocker_kzalloc(trans, flags, sizeof(*lw));
3701         if (!lw)
3702                 return -ENOMEM;
3703
3704         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3705
3706         lw->rocker_port = rocker_port;
3707         lw->trans = trans;
3708         lw->flags = flags;
3709         ether_addr_copy(lw->addr, addr);
3710         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3711
3712         if (switchdev_trans_ph_prepare(trans))
3713                 rocker_kfree(trans, lw);
3714         else
3715                 schedule_work(&lw->work);
3716
3717         return 0;
3718 }
3719
3720 static struct rocker_fdb_tbl_entry *
3721 rocker_fdb_tbl_find(const struct rocker *rocker,
3722                     const struct rocker_fdb_tbl_entry *match)
3723 {
3724         struct rocker_fdb_tbl_entry *found;
3725
3726         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3727                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3728                         return found;
3729
3730         return NULL;
3731 }
3732
3733 static int rocker_port_fdb(struct rocker_port *rocker_port,
3734                            struct switchdev_trans *trans,
3735                            const unsigned char *addr,
3736                            __be16 vlan_id, int flags)
3737 {
3738         struct rocker *rocker = rocker_port->rocker;
3739         struct rocker_fdb_tbl_entry *fdb;
3740         struct rocker_fdb_tbl_entry *found;
3741         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3742         unsigned long lock_flags;
3743
3744         fdb = rocker_kzalloc(trans, flags, sizeof(*fdb));
3745         if (!fdb)
3746                 return -ENOMEM;
3747
3748         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3749         fdb->touched = jiffies;
3750         fdb->key.rocker_port = rocker_port;
3751         ether_addr_copy(fdb->key.addr, addr);
3752         fdb->key.vlan_id = vlan_id;
3753         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3754
3755         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3756
3757         found = rocker_fdb_tbl_find(rocker, fdb);
3758
3759         if (found) {
3760                 found->touched = jiffies;
3761                 if (removing) {
3762                         rocker_kfree(trans, fdb);
3763                         if (!switchdev_trans_ph_prepare(trans))
3764                                 hash_del(&found->entry);
3765                 }
3766         } else if (!removing) {
3767                 if (!switchdev_trans_ph_prepare(trans))
3768                         hash_add(rocker->fdb_tbl, &fdb->entry,
3769                                  fdb->key_crc32);
3770         }
3771
3772         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3773
3774         /* Check if adding and already exists, or removing and can't find */
3775         if (!found != !removing) {
3776                 rocker_kfree(trans, fdb);
3777                 if (!found && removing)
3778                         return 0;
3779                 /* Refreshing existing to update aging timers */
3780                 flags |= ROCKER_OP_FLAG_REFRESH;
3781         }
3782
3783         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3784 }
3785
3786 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3787                                  struct switchdev_trans *trans, int flags)
3788 {
3789         struct rocker *rocker = rocker_port->rocker;
3790         struct rocker_fdb_tbl_entry *found;
3791         unsigned long lock_flags;
3792         struct hlist_node *tmp;
3793         int bkt;
3794         int err = 0;
3795
3796         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3797             rocker_port->stp_state == BR_STATE_FORWARDING)
3798                 return 0;
3799
3800         flags |= ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3801
3802         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3803
3804         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3805                 if (found->key.rocker_port != rocker_port)
3806                         continue;
3807                 if (!found->learned)
3808                         continue;
3809                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3810                                             found->key.addr,
3811                                             found->key.vlan_id);
3812                 if (err)
3813                         goto err_out;
3814                 if (!switchdev_trans_ph_prepare(trans))
3815                         hash_del(&found->entry);
3816         }
3817
3818 err_out:
3819         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3820
3821         return err;
3822 }
3823
3824 static void rocker_fdb_cleanup(unsigned long data)
3825 {
3826         struct rocker *rocker = (struct rocker *)data;
3827         struct rocker_port *rocker_port;
3828         struct rocker_fdb_tbl_entry *entry;
3829         struct hlist_node *tmp;
3830         unsigned long next_timer = jiffies + BR_MIN_AGEING_TIME;
3831         unsigned long expires;
3832         unsigned long lock_flags;
3833         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE |
3834                     ROCKER_OP_FLAG_LEARNED;
3835         int bkt;
3836
3837         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3838
3839         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, entry, entry) {
3840                 if (!entry->learned)
3841                         continue;
3842                 rocker_port = entry->key.rocker_port;
3843                 expires = entry->touched + rocker_port->ageing_time;
3844                 if (time_before_eq(expires, jiffies)) {
3845                         rocker_port_fdb_learn(rocker_port, NULL,
3846                                               flags, entry->key.addr,
3847                                               entry->key.vlan_id);
3848                         hash_del(&entry->entry);
3849                 } else if (time_before(expires, next_timer)) {
3850                         next_timer = expires;
3851                 }
3852         }
3853
3854         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3855
3856         mod_timer(&rocker->fdb_cleanup_timer, round_jiffies_up(next_timer));
3857 }
3858
3859 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3860                                   struct switchdev_trans *trans, int flags,
3861                                   __be16 vlan_id)
3862 {
3863         u32 in_pport_mask = 0xffffffff;
3864         __be16 eth_type;
3865         const u8 *dst_mac_mask = ff_mac;
3866         __be16 vlan_id_mask = htons(0xffff);
3867         bool copy_to_cpu = false;
3868         int err;
3869
3870         if (ntohs(vlan_id) == 0)
3871                 vlan_id = rocker_port->internal_vlan_id;
3872
3873         eth_type = htons(ETH_P_IP);
3874         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3875                                        rocker_port->pport, in_pport_mask,
3876                                        eth_type, rocker_port->dev->dev_addr,
3877                                        dst_mac_mask, vlan_id, vlan_id_mask,
3878                                        copy_to_cpu, flags);
3879         if (err)
3880                 return err;
3881
3882         eth_type = htons(ETH_P_IPV6);
3883         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3884                                        rocker_port->pport, in_pport_mask,
3885                                        eth_type, rocker_port->dev->dev_addr,
3886                                        dst_mac_mask, vlan_id, vlan_id_mask,
3887                                        copy_to_cpu, flags);
3888
3889         return err;
3890 }
3891
3892 static int rocker_port_fwding(struct rocker_port *rocker_port,
3893                               struct switchdev_trans *trans, int flags)
3894 {
3895         bool pop_vlan;
3896         u32 out_pport;
3897         __be16 vlan_id;
3898         u16 vid;
3899         int err;
3900
3901         /* Port will be forwarding-enabled if its STP state is LEARNING
3902          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3903          * port STP state.  Use L2 interface group on port VLANs as a way
3904          * to toggle port forwarding: if forwarding is disabled, L2
3905          * interface group will not exist.
3906          */
3907
3908         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3909             rocker_port->stp_state != BR_STATE_FORWARDING)
3910                 flags |= ROCKER_OP_FLAG_REMOVE;
3911
3912         out_pport = rocker_port->pport;
3913         for (vid = 1; vid < VLAN_N_VID; vid++) {
3914                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3915                         continue;
3916                 vlan_id = htons(vid);
3917                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3918                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3919                                                 vlan_id, out_pport, pop_vlan);
3920                 if (err) {
3921                         netdev_err(rocker_port->dev,
3922                                    "Error (%d) port VLAN l2 group for pport %d\n",
3923                                    err, out_pport);
3924                         return err;
3925                 }
3926         }
3927
3928         return 0;
3929 }
3930
3931 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3932                                   struct switchdev_trans *trans, int flags,
3933                                   u8 state)
3934 {
3935         bool want[ROCKER_CTRL_MAX] = { 0, };
3936         bool prev_ctrls[ROCKER_CTRL_MAX];
3937         u8 uninitialized_var(prev_state);
3938         int err;
3939         int i;
3940
3941         if (switchdev_trans_ph_prepare(trans)) {
3942                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3943                 prev_state = rocker_port->stp_state;
3944         }
3945
3946         if (rocker_port->stp_state == state)
3947                 return 0;
3948
3949         rocker_port->stp_state = state;
3950
3951         switch (state) {
3952         case BR_STATE_DISABLED:
3953                 /* port is completely disabled */
3954                 break;
3955         case BR_STATE_LISTENING:
3956         case BR_STATE_BLOCKING:
3957                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3958                 break;
3959         case BR_STATE_LEARNING:
3960         case BR_STATE_FORWARDING:
3961                 if (!rocker_port_is_ovsed(rocker_port))
3962                         want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3963                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3964                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3965                 if (rocker_port_is_bridged(rocker_port))
3966                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3967                 else if (rocker_port_is_ovsed(rocker_port))
3968                         want[ROCKER_CTRL_DFLT_OVS] = true;
3969                 else
3970                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3971                 break;
3972         }
3973
3974         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3975                 if (want[i] != rocker_port->ctrls[i]) {
3976                         int ctrl_flags = flags |
3977                                          (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3978                         err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
3979                                                &rocker_ctrls[i]);
3980                         if (err)
3981                                 goto err_out;
3982                         rocker_port->ctrls[i] = want[i];
3983                 }
3984         }
3985
3986         err = rocker_port_fdb_flush(rocker_port, trans, flags);
3987         if (err)
3988                 goto err_out;
3989
3990         err = rocker_port_fwding(rocker_port, trans, flags);
3991
3992 err_out:
3993         if (switchdev_trans_ph_prepare(trans)) {
3994                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3995                 rocker_port->stp_state = prev_state;
3996         }
3997
3998         return err;
3999 }
4000
4001 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
4002                                   struct switchdev_trans *trans, int flags)
4003 {
4004         if (rocker_port_is_bridged(rocker_port))
4005                 /* bridge STP will enable port */
4006                 return 0;
4007
4008         /* port is not bridged, so simulate going to FORWARDING state */
4009         return rocker_port_stp_update(rocker_port, trans, flags,
4010                                       BR_STATE_FORWARDING);
4011 }
4012
4013 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
4014                                    struct switchdev_trans *trans, int flags)
4015 {
4016         if (rocker_port_is_bridged(rocker_port))
4017                 /* bridge STP will disable port */
4018                 return 0;
4019
4020         /* port is not bridged, so simulate going to DISABLED state */
4021         return rocker_port_stp_update(rocker_port, trans, flags,
4022                                       BR_STATE_DISABLED);
4023 }
4024
4025 static struct rocker_internal_vlan_tbl_entry *
4026 rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
4027 {
4028         struct rocker_internal_vlan_tbl_entry *found;
4029
4030         hash_for_each_possible(rocker->internal_vlan_tbl, found,
4031                                entry, ifindex) {
4032                 if (found->ifindex == ifindex)
4033                         return found;
4034         }
4035
4036         return NULL;
4037 }
4038
4039 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
4040                                                int ifindex)
4041 {
4042         struct rocker *rocker = rocker_port->rocker;
4043         struct rocker_internal_vlan_tbl_entry *entry;
4044         struct rocker_internal_vlan_tbl_entry *found;
4045         unsigned long lock_flags;
4046         int i;
4047
4048         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
4049         if (!entry)
4050                 return 0;
4051
4052         entry->ifindex = ifindex;
4053
4054         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
4055
4056         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
4057         if (found) {
4058                 kfree(entry);
4059                 goto found;
4060         }
4061
4062         found = entry;
4063         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
4064
4065         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
4066                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
4067                         continue;
4068                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
4069                 goto found;
4070         }
4071
4072         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
4073
4074 found:
4075         found->ref_count++;
4076         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
4077
4078         return found->vlan_id;
4079 }
4080
4081 static void
4082 rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
4083                                  int ifindex)
4084 {
4085         struct rocker *rocker = rocker_port->rocker;
4086         struct rocker_internal_vlan_tbl_entry *found;
4087         unsigned long lock_flags;
4088         unsigned long bit;
4089
4090         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
4091
4092         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
4093         if (!found) {
4094                 netdev_err(rocker_port->dev,
4095                            "ifindex (%d) not found in internal VLAN tbl\n",
4096                            ifindex);
4097                 goto not_found;
4098         }
4099
4100         if (--found->ref_count <= 0) {
4101                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
4102                 clear_bit(bit, rocker->internal_vlan_bitmap);
4103                 hash_del(&found->entry);
4104                 kfree(found);
4105         }
4106
4107 not_found:
4108         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
4109 }
4110
4111 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
4112                                 struct switchdev_trans *trans, __be32 dst,
4113                                 int dst_len, const struct fib_info *fi,
4114                                 u32 tb_id, int flags)
4115 {
4116         const struct fib_nh *nh;
4117         __be16 eth_type = htons(ETH_P_IP);
4118         __be32 dst_mask = inet_make_mask(dst_len);
4119         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
4120         u32 priority = fi->fib_priority;
4121         enum rocker_of_dpa_table_id goto_tbl =
4122                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
4123         u32 group_id;
4124         bool nh_on_port;
4125         bool has_gw;
4126         u32 index;
4127         int err;
4128
4129         /* XXX support ECMP */
4130
4131         nh = fi->fib_nh;
4132         nh_on_port = (fi->fib_dev == rocker_port->dev);
4133         has_gw = !!nh->nh_gw;
4134
4135         if (has_gw && nh_on_port) {
4136                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
4137                                           nh->nh_gw, &index);
4138                 if (err)
4139                         return err;
4140
4141                 group_id = ROCKER_GROUP_L3_UNICAST(index);
4142         } else {
4143                 /* Send to CPU for processing */
4144                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
4145         }
4146
4147         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
4148                                              dst_mask, priority, goto_tbl,
4149                                              group_id, flags);
4150         if (err)
4151                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
4152                            err, &dst);
4153
4154         return err;
4155 }
4156
4157 /*****************
4158  * Net device ops
4159  *****************/
4160
4161 static int rocker_port_open(struct net_device *dev)
4162 {
4163         struct rocker_port *rocker_port = netdev_priv(dev);
4164         int err;
4165
4166         err = rocker_port_dma_rings_init(rocker_port);
4167         if (err)
4168                 return err;
4169
4170         err = request_irq(rocker_msix_tx_vector(rocker_port),
4171                           rocker_tx_irq_handler, 0,
4172                           rocker_driver_name, rocker_port);
4173         if (err) {
4174                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
4175                 goto err_request_tx_irq;
4176         }
4177
4178         err = request_irq(rocker_msix_rx_vector(rocker_port),
4179                           rocker_rx_irq_handler, 0,
4180                           rocker_driver_name, rocker_port);
4181         if (err) {
4182                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
4183                 goto err_request_rx_irq;
4184         }
4185
4186         err = rocker_world_port_open(rocker_port);
4187         if (err) {
4188                 netdev_err(rocker_port->dev, "cannot open port in world\n");
4189                 goto err_world_port_open;
4190         }
4191
4192         err = rocker_port_fwd_enable(rocker_port, NULL, 0);
4193         if (err)
4194                 goto err_fwd_enable;
4195
4196         napi_enable(&rocker_port->napi_tx);
4197         napi_enable(&rocker_port->napi_rx);
4198         if (!dev->proto_down)
4199                 rocker_port_set_enable(rocker_port, true);
4200         netif_start_queue(dev);
4201         return 0;
4202
4203 err_fwd_enable:
4204 err_world_port_open:
4205         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4206 err_request_rx_irq:
4207         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4208 err_request_tx_irq:
4209         rocker_port_dma_rings_fini(rocker_port);
4210         return err;
4211 }
4212
4213 static int rocker_port_stop(struct net_device *dev)
4214 {
4215         struct rocker_port *rocker_port = netdev_priv(dev);
4216
4217         netif_stop_queue(dev);
4218         rocker_port_set_enable(rocker_port, false);
4219         napi_disable(&rocker_port->napi_rx);
4220         napi_disable(&rocker_port->napi_tx);
4221         rocker_world_port_stop(rocker_port);
4222         rocker_port_fwd_disable(rocker_port, NULL,
4223                                 ROCKER_OP_FLAG_NOWAIT);
4224         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4225         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4226         rocker_port_dma_rings_fini(rocker_port);
4227
4228         return 0;
4229 }
4230
4231 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
4232                                        const struct rocker_desc_info *desc_info)
4233 {
4234         const struct rocker *rocker = rocker_port->rocker;
4235         struct pci_dev *pdev = rocker->pdev;
4236         const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4237         struct rocker_tlv *attr;
4238         int rem;
4239
4240         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4241         if (!attrs[ROCKER_TLV_TX_FRAGS])
4242                 return;
4243         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4244                 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4245                 dma_addr_t dma_handle;
4246                 size_t len;
4247
4248                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4249                         continue;
4250                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4251                                         attr);
4252                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4253                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4254                         continue;
4255                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4256                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4257                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4258         }
4259 }
4260
4261 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
4262                                        struct rocker_desc_info *desc_info,
4263                                        char *buf, size_t buf_len)
4264 {
4265         const struct rocker *rocker = rocker_port->rocker;
4266         struct pci_dev *pdev = rocker->pdev;
4267         dma_addr_t dma_handle;
4268         struct rocker_tlv *frag;
4269
4270         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4271         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4272                 if (net_ratelimit())
4273                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4274                 return -EIO;
4275         }
4276         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4277         if (!frag)
4278                 goto unmap_frag;
4279         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4280                                dma_handle))
4281                 goto nest_cancel;
4282         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4283                                buf_len))
4284                 goto nest_cancel;
4285         rocker_tlv_nest_end(desc_info, frag);
4286         return 0;
4287
4288 nest_cancel:
4289         rocker_tlv_nest_cancel(desc_info, frag);
4290 unmap_frag:
4291         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4292         return -EMSGSIZE;
4293 }
4294
4295 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4296 {
4297         struct rocker_port *rocker_port = netdev_priv(dev);
4298         struct rocker *rocker = rocker_port->rocker;
4299         struct rocker_desc_info *desc_info;
4300         struct rocker_tlv *frags;
4301         int i;
4302         int err;
4303
4304         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4305         if (unlikely(!desc_info)) {
4306                 if (net_ratelimit())
4307                         netdev_err(dev, "tx ring full when queue awake\n");
4308                 return NETDEV_TX_BUSY;
4309         }
4310
4311         rocker_desc_cookie_ptr_set(desc_info, skb);
4312
4313         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4314         if (!frags)
4315                 goto out;
4316         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4317                                           skb->data, skb_headlen(skb));
4318         if (err)
4319                 goto nest_cancel;
4320         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) {
4321                 err = skb_linearize(skb);
4322                 if (err)
4323                         goto unmap_frags;
4324         }
4325
4326         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4327                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4328
4329                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4330                                                   skb_frag_address(frag),
4331                                                   skb_frag_size(frag));
4332                 if (err)
4333                         goto unmap_frags;
4334         }
4335         rocker_tlv_nest_end(desc_info, frags);
4336
4337         rocker_desc_gen_clear(desc_info);
4338         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4339
4340         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4341         if (!desc_info)
4342                 netif_stop_queue(dev);
4343
4344         return NETDEV_TX_OK;
4345
4346 unmap_frags:
4347         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4348 nest_cancel:
4349         rocker_tlv_nest_cancel(desc_info, frags);
4350 out:
4351         dev_kfree_skb(skb);
4352         dev->stats.tx_dropped++;
4353
4354         return NETDEV_TX_OK;
4355 }
4356
4357 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4358 {
4359         struct sockaddr *addr = p;
4360         struct rocker_port *rocker_port = netdev_priv(dev);
4361         int err;
4362
4363         if (!is_valid_ether_addr(addr->sa_data))
4364                 return -EADDRNOTAVAIL;
4365
4366         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4367         if (err)
4368                 return err;
4369         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4370         return 0;
4371 }
4372
4373 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
4374 {
4375         struct rocker_port *rocker_port = netdev_priv(dev);
4376         int running = netif_running(dev);
4377         int err;
4378
4379 #define ROCKER_PORT_MIN_MTU     68
4380 #define ROCKER_PORT_MAX_MTU     9000
4381
4382         if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
4383                 return -EINVAL;
4384
4385         if (running)
4386                 rocker_port_stop(dev);
4387
4388         netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
4389         dev->mtu = new_mtu;
4390
4391         err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
4392         if (err)
4393                 return err;
4394
4395         if (running)
4396                 err = rocker_port_open(dev);
4397
4398         return err;
4399 }
4400
4401 static int rocker_port_get_phys_port_name(struct net_device *dev,
4402                                           char *buf, size_t len)
4403 {
4404         struct rocker_port *rocker_port = netdev_priv(dev);
4405         struct port_name name = { .buf = buf, .len = len };
4406         int err;
4407
4408         err = rocker_cmd_exec(rocker_port, NULL, 0,
4409                               rocker_cmd_get_port_settings_prep, NULL,
4410                               rocker_cmd_get_port_settings_phys_name_proc,
4411                               &name);
4412
4413         return err ? -EOPNOTSUPP : 0;
4414 }
4415
4416 static int rocker_port_change_proto_down(struct net_device *dev,
4417                                          bool proto_down)
4418 {
4419         struct rocker_port *rocker_port = netdev_priv(dev);
4420
4421         if (rocker_port->dev->flags & IFF_UP)
4422                 rocker_port_set_enable(rocker_port, !proto_down);
4423         rocker_port->dev->proto_down = proto_down;
4424         return 0;
4425 }
4426
4427 static void rocker_port_neigh_destroy(struct neighbour *n)
4428 {
4429         struct rocker_port *rocker_port = netdev_priv(n->dev);
4430         int flags = ROCKER_OP_FLAG_REMOVE | ROCKER_OP_FLAG_NOWAIT;
4431         __be32 ip_addr = *(__be32 *)n->primary_key;
4432         int err;
4433
4434         rocker_port_ipv4_neigh(rocker_port, NULL,
4435                                flags, ip_addr, n->ha);
4436         err = rocker_world_port_neigh_destroy(rocker_port, n);
4437         if (err)
4438                 netdev_warn(rocker_port->dev, "failed to handle neigh destroy (err %d)\n",
4439                             err);
4440 }
4441
4442 static const struct net_device_ops rocker_port_netdev_ops = {
4443         .ndo_open                       = rocker_port_open,
4444         .ndo_stop                       = rocker_port_stop,
4445         .ndo_start_xmit                 = rocker_port_xmit,
4446         .ndo_set_mac_address            = rocker_port_set_mac_address,
4447         .ndo_change_mtu                 = rocker_port_change_mtu,
4448         .ndo_bridge_getlink             = switchdev_port_bridge_getlink,
4449         .ndo_bridge_setlink             = switchdev_port_bridge_setlink,
4450         .ndo_bridge_dellink             = switchdev_port_bridge_dellink,
4451         .ndo_fdb_add                    = switchdev_port_fdb_add,
4452         .ndo_fdb_del                    = switchdev_port_fdb_del,
4453         .ndo_fdb_dump                   = switchdev_port_fdb_dump,
4454         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4455         .ndo_change_proto_down          = rocker_port_change_proto_down,
4456         .ndo_neigh_destroy              = rocker_port_neigh_destroy,
4457 };
4458
4459 /********************
4460  * swdev interface
4461  ********************/
4462
4463 static int rocker_port_attr_get(struct net_device *dev,
4464                                 struct switchdev_attr *attr)
4465 {
4466         const struct rocker_port *rocker_port = netdev_priv(dev);
4467         const struct rocker *rocker = rocker_port->rocker;
4468         int err = 0;
4469
4470         switch (attr->id) {
4471         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
4472                 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4473                 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4474                 break;
4475         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
4476                 attr->u.brport_flags = rocker_port->brport_flags;
4477                 err = rocker_world_port_attr_bridge_flags_get(rocker_port,
4478                                                               &attr->u.brport_flags);
4479                 break;
4480         default:
4481                 return -EOPNOTSUPP;
4482         }
4483
4484         return err;
4485 }
4486
4487 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4488                                         struct switchdev_trans *trans,
4489                                         unsigned long brport_flags)
4490 {
4491         unsigned long orig_flags;
4492         int err = 0;
4493
4494         orig_flags = rocker_port->brport_flags;
4495         rocker_port->brport_flags = brport_flags;
4496         if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
4497                 err = rocker_port_set_learning(rocker_port, trans,
4498                                                !!(rocker_port->brport_flags & BR_LEARNING));
4499
4500         if (switchdev_trans_ph_prepare(trans))
4501                 rocker_port->brport_flags = orig_flags;
4502
4503         return err;
4504 }
4505
4506 static int rocker_port_bridge_ageing_time(struct rocker_port *rocker_port,
4507                                           struct switchdev_trans *trans,
4508                                           u32 ageing_time)
4509 {
4510         if (!switchdev_trans_ph_prepare(trans)) {
4511                 rocker_port->ageing_time = clock_t_to_jiffies(ageing_time);
4512                 mod_timer(&rocker_port->rocker->fdb_cleanup_timer, jiffies);
4513         }
4514
4515         return 0;
4516 }
4517
4518 static int rocker_port_attr_set(struct net_device *dev,
4519                                 const struct switchdev_attr *attr,
4520                                 struct switchdev_trans *trans)
4521 {
4522         struct rocker_port *rocker_port = netdev_priv(dev);
4523         int err = 0;
4524
4525         switch (attr->id) {
4526         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
4527                 err = rocker_port_stp_update(rocker_port, trans, 0,
4528                                              attr->u.stp_state);
4529                 if (err)
4530                         break;
4531                 err = rocker_world_port_attr_stp_state_set(rocker_port,
4532                                                            attr->u.stp_state,
4533                                                            trans);
4534                 break;
4535         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
4536                 err = rocker_port_brport_flags_set(rocker_port, trans,
4537                                                    attr->u.brport_flags);
4538                 if (err)
4539                         break;
4540                 err = rocker_world_port_attr_bridge_flags_set(rocker_port,
4541                                                               attr->u.brport_flags,
4542                                                               trans);
4543                 break;
4544         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
4545                 err = rocker_port_bridge_ageing_time(rocker_port, trans,
4546                                                      attr->u.ageing_time);
4547                 if (err)
4548                         break;
4549                 err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port,
4550                                                                     attr->u.ageing_time,
4551                                                                     trans);
4552                 break;
4553         default:
4554                 err = -EOPNOTSUPP;
4555                 break;
4556         }
4557
4558         return err;
4559 }
4560
4561 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4562                                 struct switchdev_trans *trans,
4563                                 u16 vid, u16 flags)
4564 {
4565         int err;
4566
4567         /* XXX deal with flags for PVID and untagged */
4568
4569         err = rocker_port_vlan(rocker_port, trans, 0, vid);
4570         if (err)
4571                 return err;
4572
4573         err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4574         if (err)
4575                 rocker_port_vlan(rocker_port, trans,
4576                                  ROCKER_OP_FLAG_REMOVE, vid);
4577
4578         return err;
4579 }
4580
4581 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4582                                  struct switchdev_trans *trans,
4583                                  const struct switchdev_obj_port_vlan *vlan)
4584 {
4585         u16 vid;
4586         int err;
4587
4588         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4589                 err = rocker_port_vlan_add(rocker_port, trans,
4590                                            vid, vlan->flags);
4591                 if (err)
4592                         return err;
4593         }
4594
4595         return 0;
4596 }
4597
4598 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4599                                struct switchdev_trans *trans,
4600                                const struct switchdev_obj_port_fdb *fdb)
4601 {
4602         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4603         int flags = 0;
4604
4605         if (!rocker_port_is_bridged(rocker_port))
4606                 return -EINVAL;
4607
4608         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4609 }
4610
4611 static int rocker_port_obj_add(struct net_device *dev,
4612                                const struct switchdev_obj *obj,
4613                                struct switchdev_trans *trans)
4614 {
4615         struct rocker_port *rocker_port = netdev_priv(dev);
4616         const struct switchdev_obj_ipv4_fib *fib4;
4617         int err = 0;
4618
4619         switch (obj->id) {
4620         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4621                 err = rocker_port_vlans_add(rocker_port, trans,
4622                                             SWITCHDEV_OBJ_PORT_VLAN(obj));
4623                 if (err)
4624                         break;
4625                 err = rocker_world_port_obj_vlan_add(rocker_port,
4626                                                      SWITCHDEV_OBJ_PORT_VLAN(obj),
4627                                                      trans);
4628                 break;
4629         case SWITCHDEV_OBJ_ID_IPV4_FIB:
4630                 fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
4631                 err = rocker_port_fib_ipv4(rocker_port, trans,
4632                                            htonl(fib4->dst), fib4->dst_len,
4633                                            &fib4->fi, fib4->tb_id, 0);
4634                 if (err)
4635                         break;
4636                 err = rocker_world_port_obj_fib4_add(rocker_port,
4637                                                      SWITCHDEV_OBJ_IPV4_FIB(obj),
4638                                                      trans);
4639                 break;
4640         case SWITCHDEV_OBJ_ID_PORT_FDB:
4641                 err = rocker_port_fdb_add(rocker_port, trans,
4642                                           SWITCHDEV_OBJ_PORT_FDB(obj));
4643                 if (err)
4644                         break;
4645                 err = rocker_world_port_obj_fdb_add(rocker_port,
4646                                                     SWITCHDEV_OBJ_PORT_FDB(obj),
4647                                                     trans);
4648                 break;
4649         default:
4650                 err = -EOPNOTSUPP;
4651                 break;
4652         }
4653
4654         return err;
4655 }
4656
4657 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4658                                 u16 vid, u16 flags)
4659 {
4660         int err;
4661
4662         err = rocker_port_router_mac(rocker_port, NULL,
4663                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4664         if (err)
4665                 return err;
4666
4667         return rocker_port_vlan(rocker_port, NULL,
4668                                 ROCKER_OP_FLAG_REMOVE, vid);
4669 }
4670
4671 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4672                                  const struct switchdev_obj_port_vlan *vlan)
4673 {
4674         u16 vid;
4675         int err;
4676
4677         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4678                 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4679                 if (err)
4680                         return err;
4681         }
4682
4683         return 0;
4684 }
4685
4686 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4687                                struct switchdev_trans *trans,
4688                                const struct switchdev_obj_port_fdb *fdb)
4689 {
4690         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4691         int flags = ROCKER_OP_FLAG_REMOVE;
4692
4693         if (!rocker_port_is_bridged(rocker_port))
4694                 return -EINVAL;
4695
4696         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4697 }
4698
4699 static int rocker_port_obj_del(struct net_device *dev,
4700                                const struct switchdev_obj *obj)
4701 {
4702         struct rocker_port *rocker_port = netdev_priv(dev);
4703         const struct switchdev_obj_ipv4_fib *fib4;
4704         int err = 0;
4705
4706         switch (obj->id) {
4707         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4708                 err = rocker_port_vlans_del(rocker_port,
4709                                             SWITCHDEV_OBJ_PORT_VLAN(obj));
4710                 if (err)
4711                         break;
4712                 err = rocker_world_port_obj_vlan_del(rocker_port,
4713                                                      SWITCHDEV_OBJ_PORT_VLAN(obj));
4714                 break;
4715         case SWITCHDEV_OBJ_ID_IPV4_FIB:
4716                 fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
4717                 err = rocker_port_fib_ipv4(rocker_port, NULL,
4718                                            htonl(fib4->dst), fib4->dst_len,
4719                                            &fib4->fi, fib4->tb_id,
4720                                            ROCKER_OP_FLAG_REMOVE);
4721                 if (err)
4722                         break;
4723                 err = rocker_world_port_obj_fib4_del(rocker_port,
4724                                                      SWITCHDEV_OBJ_IPV4_FIB(obj));
4725                 break;
4726         case SWITCHDEV_OBJ_ID_PORT_FDB:
4727                 err = rocker_port_fdb_del(rocker_port, NULL,
4728                                           SWITCHDEV_OBJ_PORT_FDB(obj));
4729                 if (err)
4730                         break;
4731                 err = rocker_world_port_obj_fdb_del(rocker_port,
4732                                                     SWITCHDEV_OBJ_PORT_FDB(obj));
4733                 break;
4734         default:
4735                 err = -EOPNOTSUPP;
4736                 break;
4737         }
4738
4739         return err;
4740 }
4741
4742 static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
4743                                 struct switchdev_obj_port_fdb *fdb,
4744                                 switchdev_obj_dump_cb_t *cb)
4745 {
4746         struct rocker *rocker = rocker_port->rocker;
4747         struct rocker_fdb_tbl_entry *found;
4748         struct hlist_node *tmp;
4749         unsigned long lock_flags;
4750         int bkt;
4751         int err = 0;
4752
4753         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4754         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4755                 if (found->key.rocker_port != rocker_port)
4756                         continue;
4757                 ether_addr_copy(fdb->addr, found->key.addr);
4758                 fdb->ndm_state = NUD_REACHABLE;
4759                 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4760                                                    found->key.vlan_id);
4761                 err = cb(&fdb->obj);
4762                 if (err)
4763                         break;
4764         }
4765         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4766
4767         return err;
4768 }
4769
4770 static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
4771                                  struct switchdev_obj_port_vlan *vlan,
4772                                  switchdev_obj_dump_cb_t *cb)
4773 {
4774         u16 vid;
4775         int err = 0;
4776
4777         for (vid = 1; vid < VLAN_N_VID; vid++) {
4778                 if (!test_bit(vid, rocker_port->vlan_bitmap))
4779                         continue;
4780                 vlan->flags = 0;
4781                 if (rocker_vlan_id_is_internal(htons(vid)))
4782                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
4783                 vlan->vid_begin = vid;
4784                 vlan->vid_end = vid;
4785                 err = cb(&vlan->obj);
4786                 if (err)
4787                         break;
4788         }
4789
4790         return err;
4791 }
4792
4793 static int rocker_port_obj_dump(struct net_device *dev,
4794                                 struct switchdev_obj *obj,
4795                                 switchdev_obj_dump_cb_t *cb)
4796 {
4797         const struct rocker_port *rocker_port = netdev_priv(dev);
4798         int err = 0;
4799
4800         switch (obj->id) {
4801         case SWITCHDEV_OBJ_ID_PORT_FDB:
4802                 err = rocker_port_fdb_dump(rocker_port,
4803                                            SWITCHDEV_OBJ_PORT_FDB(obj), cb);
4804                 if (err)
4805                         break;
4806                 err = rocker_world_port_obj_fdb_dump(rocker_port,
4807                                                      SWITCHDEV_OBJ_PORT_FDB(obj),
4808                                                      cb);
4809                 break;
4810         case SWITCHDEV_OBJ_ID_PORT_VLAN:
4811                 err = rocker_port_vlan_dump(rocker_port,
4812                                             SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
4813                 if (err)
4814                         break;
4815                 err = rocker_world_port_obj_vlan_dump(rocker_port,
4816                                                       SWITCHDEV_OBJ_PORT_VLAN(obj),
4817                                                       cb);
4818                 break;
4819         default:
4820                 err = -EOPNOTSUPP;
4821                 break;
4822         }
4823
4824         return err;
4825 }
4826
4827 static const struct switchdev_ops rocker_port_switchdev_ops = {
4828         .switchdev_port_attr_get        = rocker_port_attr_get,
4829         .switchdev_port_attr_set        = rocker_port_attr_set,
4830         .switchdev_port_obj_add         = rocker_port_obj_add,
4831         .switchdev_port_obj_del         = rocker_port_obj_del,
4832         .switchdev_port_obj_dump        = rocker_port_obj_dump,
4833 };
4834
4835 /********************
4836  * ethtool interface
4837  ********************/
4838
4839 static int rocker_port_get_settings(struct net_device *dev,
4840                                     struct ethtool_cmd *ecmd)
4841 {
4842         struct rocker_port *rocker_port = netdev_priv(dev);
4843
4844         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4845 }
4846
4847 static int rocker_port_set_settings(struct net_device *dev,
4848                                     struct ethtool_cmd *ecmd)
4849 {
4850         struct rocker_port *rocker_port = netdev_priv(dev);
4851
4852         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4853 }
4854
4855 static void rocker_port_get_drvinfo(struct net_device *dev,
4856                                     struct ethtool_drvinfo *drvinfo)
4857 {
4858         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4859         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4860 }
4861
4862 static struct rocker_port_stats {
4863         char str[ETH_GSTRING_LEN];
4864         int type;
4865 } rocker_port_stats[] = {
4866         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4867         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4868         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4869         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4870
4871         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4872         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4873         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4874         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4875 };
4876
4877 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4878
4879 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4880                                     u8 *data)
4881 {
4882         u8 *p = data;
4883         int i;
4884
4885         switch (stringset) {
4886         case ETH_SS_STATS:
4887                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4888                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4889                         p += ETH_GSTRING_LEN;
4890                 }
4891                 break;
4892         }
4893 }
4894
4895 static int
4896 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
4897                                struct rocker_desc_info *desc_info,
4898                                void *priv)
4899 {
4900         struct rocker_tlv *cmd_stats;
4901
4902         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4903                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4904                 return -EMSGSIZE;
4905
4906         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4907         if (!cmd_stats)
4908                 return -EMSGSIZE;
4909
4910         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4911                                rocker_port->pport))
4912                 return -EMSGSIZE;
4913
4914         rocker_tlv_nest_end(desc_info, cmd_stats);
4915
4916         return 0;
4917 }
4918
4919 static int
4920 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
4921                                        const struct rocker_desc_info *desc_info,
4922                                        void *priv)
4923 {
4924         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4925         const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4926         const struct rocker_tlv *pattr;
4927         u32 pport;
4928         u64 *data = priv;
4929         int i;
4930
4931         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4932
4933         if (!attrs[ROCKER_TLV_CMD_INFO])
4934                 return -EIO;
4935
4936         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4937                                 attrs[ROCKER_TLV_CMD_INFO]);
4938
4939         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4940                 return -EIO;
4941
4942         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4943         if (pport != rocker_port->pport)
4944                 return -EIO;
4945
4946         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4947                 pattr = stats_attrs[rocker_port_stats[i].type];
4948                 if (!pattr)
4949                         continue;
4950
4951                 data[i] = rocker_tlv_get_u64(pattr);
4952         }
4953
4954         return 0;
4955 }
4956
4957 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4958                                              void *priv)
4959 {
4960         return rocker_cmd_exec(rocker_port, NULL, 0,
4961                                rocker_cmd_get_port_stats_prep, NULL,
4962                                rocker_cmd_get_port_stats_ethtool_proc,
4963                                priv);
4964 }
4965
4966 static void rocker_port_get_stats(struct net_device *dev,
4967                                   struct ethtool_stats *stats, u64 *data)
4968 {
4969         struct rocker_port *rocker_port = netdev_priv(dev);
4970
4971         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4972                 int i;
4973
4974                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4975                         data[i] = 0;
4976         }
4977 }
4978
4979 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4980 {
4981         switch (sset) {
4982         case ETH_SS_STATS:
4983                 return ROCKER_PORT_STATS_LEN;
4984         default:
4985                 return -EOPNOTSUPP;
4986         }
4987 }
4988
4989 static const struct ethtool_ops rocker_port_ethtool_ops = {
4990         .get_settings           = rocker_port_get_settings,
4991         .set_settings           = rocker_port_set_settings,
4992         .get_drvinfo            = rocker_port_get_drvinfo,
4993         .get_link               = ethtool_op_get_link,
4994         .get_strings            = rocker_port_get_strings,
4995         .get_ethtool_stats      = rocker_port_get_stats,
4996         .get_sset_count         = rocker_port_get_sset_count,
4997 };
4998
4999 /*****************
5000  * NAPI interface
5001  *****************/
5002
5003 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
5004 {
5005         return container_of(napi, struct rocker_port, napi_tx);
5006 }
5007
5008 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
5009 {
5010         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
5011         const struct rocker *rocker = rocker_port->rocker;
5012         const struct rocker_desc_info *desc_info;
5013         u32 credits = 0;
5014         int err;
5015
5016         /* Cleanup tx descriptors */
5017         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
5018                 struct sk_buff *skb;
5019
5020                 err = rocker_desc_err(desc_info);
5021                 if (err && net_ratelimit())
5022                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
5023                                    err);
5024                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
5025
5026                 skb = rocker_desc_cookie_ptr_get(desc_info);
5027                 if (err == 0) {
5028                         rocker_port->dev->stats.tx_packets++;
5029                         rocker_port->dev->stats.tx_bytes += skb->len;
5030                 } else {
5031                         rocker_port->dev->stats.tx_errors++;
5032                 }
5033
5034                 dev_kfree_skb_any(skb);
5035                 credits++;
5036         }
5037
5038         if (credits && netif_queue_stopped(rocker_port->dev))
5039                 netif_wake_queue(rocker_port->dev);
5040
5041         napi_complete(napi);
5042         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
5043
5044         return 0;
5045 }
5046
5047 static int rocker_port_rx_proc(const struct rocker *rocker,
5048                                const struct rocker_port *rocker_port,
5049                                struct rocker_desc_info *desc_info)
5050 {
5051         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
5052         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
5053         size_t rx_len;
5054         u16 rx_flags = 0;
5055
5056         if (!skb)
5057                 return -ENOENT;
5058
5059         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
5060         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
5061                 return -EINVAL;
5062         if (attrs[ROCKER_TLV_RX_FLAGS])
5063                 rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]);
5064
5065         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
5066
5067         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
5068         skb_put(skb, rx_len);
5069         skb->protocol = eth_type_trans(skb, rocker_port->dev);
5070
5071         if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD)
5072                 skb->offload_fwd_mark = rocker_port->dev->offload_fwd_mark;
5073
5074         rocker_port->dev->stats.rx_packets++;
5075         rocker_port->dev->stats.rx_bytes += skb->len;
5076
5077         netif_receive_skb(skb);
5078
5079         return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
5080 }
5081
5082 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
5083 {
5084         return container_of(napi, struct rocker_port, napi_rx);
5085 }
5086
5087 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
5088 {
5089         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
5090         const struct rocker *rocker = rocker_port->rocker;
5091         struct rocker_desc_info *desc_info;
5092         u32 credits = 0;
5093         int err;
5094
5095         /* Process rx descriptors */
5096         while (credits < budget &&
5097                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
5098                 err = rocker_desc_err(desc_info);
5099                 if (err) {
5100                         if (net_ratelimit())
5101                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
5102                                            err);
5103                 } else {
5104                         err = rocker_port_rx_proc(rocker, rocker_port,
5105                                                   desc_info);
5106                         if (err && net_ratelimit())
5107                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
5108                                            err);
5109                 }
5110                 if (err)
5111                         rocker_port->dev->stats.rx_errors++;
5112
5113                 rocker_desc_gen_clear(desc_info);
5114                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
5115                 credits++;
5116         }
5117
5118         if (credits < budget)
5119                 napi_complete(napi);
5120
5121         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
5122
5123         return credits;
5124 }
5125
5126 /*****************
5127  * PCI driver ops
5128  *****************/
5129
5130 static void rocker_carrier_init(const struct rocker_port *rocker_port)
5131 {
5132         const struct rocker *rocker = rocker_port->rocker;
5133         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
5134         bool link_up;
5135
5136         link_up = link_status & (1 << rocker_port->pport);
5137         if (link_up)
5138                 netif_carrier_on(rocker_port->dev);
5139         else
5140                 netif_carrier_off(rocker_port->dev);
5141 }
5142
5143 static void rocker_remove_ports(struct rocker *rocker)
5144 {
5145         struct rocker_port *rocker_port;
5146         int i;
5147
5148         for (i = 0; i < rocker->port_count; i++) {
5149                 rocker_port = rocker->ports[i];
5150                 if (!rocker_port)
5151                         continue;
5152                 rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
5153                 rocker_world_port_fini(rocker_port);
5154                 unregister_netdev(rocker_port->dev);
5155                 rocker_world_port_post_fini(rocker_port);
5156                 free_netdev(rocker_port->dev);
5157         }
5158         rocker_world_fini(rocker);
5159         kfree(rocker->ports);
5160 }
5161
5162 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
5163 {
5164         const struct rocker *rocker = rocker_port->rocker;
5165         const struct pci_dev *pdev = rocker->pdev;
5166         int err;
5167
5168         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
5169                                                    rocker_port->dev->dev_addr);
5170         if (err) {
5171                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
5172                 eth_hw_addr_random(rocker_port->dev);
5173         }
5174 }
5175
5176 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
5177 {
5178         const struct pci_dev *pdev = rocker->pdev;
5179         struct rocker_port *rocker_port;
5180         struct net_device *dev;
5181         u16 untagged_vid = 0;
5182         int err;
5183
5184         dev = alloc_etherdev(sizeof(struct rocker_port));
5185         if (!dev)
5186                 return -ENOMEM;
5187         rocker_port = netdev_priv(dev);
5188         rocker_port->dev = dev;
5189         rocker_port->rocker = rocker;
5190         rocker_port->port_number = port_number;
5191         rocker_port->pport = port_number + 1;
5192         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
5193         rocker_port->ageing_time = BR_DEFAULT_AGEING_TIME;
5194
5195         err = rocker_world_check_init(rocker_port);
5196         if (err) {
5197                 dev_err(&pdev->dev, "world init failed\n");
5198                 goto err_world_check_init;
5199         }
5200
5201         rocker_port_dev_addr_init(rocker_port);
5202         dev->netdev_ops = &rocker_port_netdev_ops;
5203         dev->ethtool_ops = &rocker_port_ethtool_ops;
5204         dev->switchdev_ops = &rocker_port_switchdev_ops;
5205         netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
5206                           NAPI_POLL_WEIGHT);
5207         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
5208                        NAPI_POLL_WEIGHT);
5209         rocker_carrier_init(rocker_port);
5210
5211         dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG;
5212
5213         err = rocker_world_port_pre_init(rocker_port);
5214         if (err) {
5215                 dev_err(&pdev->dev, "port world pre-init failed\n");
5216                 goto err_world_port_pre_init;
5217         }
5218         err = register_netdev(dev);
5219         if (err) {
5220                 dev_err(&pdev->dev, "register_netdev failed\n");
5221                 goto err_register_netdev;
5222         }
5223         rocker->ports[port_number] = rocker_port;
5224
5225         err = rocker_world_port_init(rocker_port);
5226         if (err) {
5227                 dev_err(&pdev->dev, "port world init failed\n");
5228                 goto err_world_port_init;
5229         }
5230
5231         switchdev_port_fwd_mark_set(rocker_port->dev, NULL, false);
5232
5233         rocker_port_set_learning(rocker_port, NULL,
5234                                  !!(rocker_port->brport_flags & BR_LEARNING));
5235
5236         err = rocker_port_ig_tbl(rocker_port, NULL, 0);
5237         if (err) {
5238                 netdev_err(rocker_port->dev, "install ig port table failed\n");
5239                 goto err_port_ig_tbl;
5240         }
5241
5242         rocker_port->internal_vlan_id =
5243                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
5244
5245         err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5246         if (err) {
5247                 netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
5248                 goto err_untagged_vlan;
5249         }
5250
5251         return 0;
5252
5253 err_untagged_vlan:
5254         rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
5255 err_port_ig_tbl:
5256         rocker_world_port_fini(rocker_port);
5257 err_world_port_init:
5258         rocker->ports[port_number] = NULL;
5259         unregister_netdev(dev);
5260 err_register_netdev:
5261         rocker_world_port_post_fini(rocker_port);
5262 err_world_port_pre_init:
5263 err_world_check_init:
5264         free_netdev(dev);
5265         return err;
5266 }
5267
5268 static int rocker_probe_ports(struct rocker *rocker)
5269 {
5270         int i;
5271         size_t alloc_size;
5272         int err;
5273
5274         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
5275         rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
5276         if (!rocker->ports)
5277                 return -ENOMEM;
5278         for (i = 0; i < rocker->port_count; i++) {
5279                 err = rocker_probe_port(rocker, i);
5280                 if (err)
5281                         goto remove_ports;
5282         }
5283         return 0;
5284
5285 remove_ports:
5286         rocker_remove_ports(rocker);
5287         return err;
5288 }
5289
5290 static int rocker_msix_init(struct rocker *rocker)
5291 {
5292         struct pci_dev *pdev = rocker->pdev;
5293         int msix_entries;
5294         int i;
5295         int err;
5296
5297         msix_entries = pci_msix_vec_count(pdev);
5298         if (msix_entries < 0)
5299                 return msix_entries;
5300
5301         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
5302                 return -EINVAL;
5303
5304         rocker->msix_entries = kmalloc_array(msix_entries,
5305                                              sizeof(struct msix_entry),
5306                                              GFP_KERNEL);
5307         if (!rocker->msix_entries)
5308                 return -ENOMEM;
5309
5310         for (i = 0; i < msix_entries; i++)
5311                 rocker->msix_entries[i].entry = i;
5312
5313         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
5314         if (err < 0)
5315                 goto err_enable_msix;
5316
5317         return 0;
5318
5319 err_enable_msix:
5320         kfree(rocker->msix_entries);
5321         return err;
5322 }
5323
5324 static void rocker_msix_fini(const struct rocker *rocker)
5325 {
5326         pci_disable_msix(rocker->pdev);
5327         kfree(rocker->msix_entries);
5328 }
5329
5330 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5331 {
5332         struct rocker *rocker;
5333         int err;
5334
5335         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
5336         if (!rocker)
5337                 return -ENOMEM;
5338
5339         err = pci_enable_device(pdev);
5340         if (err) {
5341                 dev_err(&pdev->dev, "pci_enable_device failed\n");
5342                 goto err_pci_enable_device;
5343         }
5344
5345         err = pci_request_regions(pdev, rocker_driver_name);
5346         if (err) {
5347                 dev_err(&pdev->dev, "pci_request_regions failed\n");
5348                 goto err_pci_request_regions;
5349         }
5350
5351         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5352         if (!err) {
5353                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5354                 if (err) {
5355                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5356                         goto err_pci_set_dma_mask;
5357                 }
5358         } else {
5359                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5360                 if (err) {
5361                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5362                         goto err_pci_set_dma_mask;
5363                 }
5364         }
5365
5366         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5367                 dev_err(&pdev->dev, "invalid PCI region size\n");
5368                 err = -EINVAL;
5369                 goto err_pci_resource_len_check;
5370         }
5371
5372         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5373                                   pci_resource_len(pdev, 0));
5374         if (!rocker->hw_addr) {
5375                 dev_err(&pdev->dev, "ioremap failed\n");
5376                 err = -EIO;
5377                 goto err_ioremap;
5378         }
5379         pci_set_master(pdev);
5380
5381         rocker->pdev = pdev;
5382         pci_set_drvdata(pdev, rocker);
5383
5384         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5385
5386         err = rocker_msix_init(rocker);
5387         if (err) {
5388                 dev_err(&pdev->dev, "MSI-X init failed\n");
5389                 goto err_msix_init;
5390         }
5391
5392         err = rocker_basic_hw_test(rocker);
5393         if (err) {
5394                 dev_err(&pdev->dev, "basic hw test failed\n");
5395                 goto err_basic_hw_test;
5396         }
5397
5398         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5399
5400         err = rocker_dma_rings_init(rocker);
5401         if (err)
5402                 goto err_dma_rings_init;
5403
5404         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5405                           rocker_cmd_irq_handler, 0,
5406                           rocker_driver_name, rocker);
5407         if (err) {
5408                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5409                 goto err_request_cmd_irq;
5410         }
5411
5412         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5413                           rocker_event_irq_handler, 0,
5414                           rocker_driver_name, rocker);
5415         if (err) {
5416                 dev_err(&pdev->dev, "cannot assign event irq\n");
5417                 goto err_request_event_irq;
5418         }
5419
5420         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5421
5422         err = rocker_init_tbls(rocker);
5423         if (err) {
5424                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5425                 goto err_init_tbls;
5426         }
5427
5428         setup_timer(&rocker->fdb_cleanup_timer, rocker_fdb_cleanup,
5429                     (unsigned long) rocker);
5430         mod_timer(&rocker->fdb_cleanup_timer, jiffies);
5431
5432         err = rocker_probe_ports(rocker);
5433         if (err) {
5434                 dev_err(&pdev->dev, "failed to probe ports\n");
5435                 goto err_probe_ports;
5436         }
5437
5438         dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
5439                  (int)sizeof(rocker->hw.id), &rocker->hw.id);
5440
5441         return 0;
5442
5443 err_probe_ports:
5444         del_timer_sync(&rocker->fdb_cleanup_timer);
5445         rocker_free_tbls(rocker);
5446 err_init_tbls:
5447         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5448 err_request_event_irq:
5449         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5450 err_request_cmd_irq:
5451         rocker_dma_rings_fini(rocker);
5452 err_dma_rings_init:
5453 err_basic_hw_test:
5454         rocker_msix_fini(rocker);
5455 err_msix_init:
5456         iounmap(rocker->hw_addr);
5457 err_ioremap:
5458 err_pci_resource_len_check:
5459 err_pci_set_dma_mask:
5460         pci_release_regions(pdev);
5461 err_pci_request_regions:
5462         pci_disable_device(pdev);
5463 err_pci_enable_device:
5464         kfree(rocker);
5465         return err;
5466 }
5467
5468 static void rocker_remove(struct pci_dev *pdev)
5469 {
5470         struct rocker *rocker = pci_get_drvdata(pdev);
5471
5472         del_timer_sync(&rocker->fdb_cleanup_timer);
5473         rocker_free_tbls(rocker);
5474         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5475         rocker_remove_ports(rocker);
5476         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5477         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5478         rocker_dma_rings_fini(rocker);
5479         rocker_msix_fini(rocker);
5480         iounmap(rocker->hw_addr);
5481         pci_release_regions(rocker->pdev);
5482         pci_disable_device(rocker->pdev);
5483         kfree(rocker);
5484 }
5485
5486 static struct pci_driver rocker_pci_driver = {
5487         .name           = rocker_driver_name,
5488         .id_table       = rocker_pci_id_table,
5489         .probe          = rocker_probe,
5490         .remove         = rocker_remove,
5491 };
5492
5493 /************************************
5494  * Net device notifier event handler
5495  ************************************/
5496
5497 static bool rocker_port_dev_check(const struct net_device *dev)
5498 {
5499         return dev->netdev_ops == &rocker_port_netdev_ops;
5500 }
5501
5502 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5503                                    struct net_device *bridge)
5504 {
5505         u16 untagged_vid = 0;
5506         int err;
5507
5508         /* Port is joining bridge, so the internal VLAN for the
5509          * port is going to change to the bridge internal VLAN.
5510          * Let's remove untagged VLAN (vid=0) from port and
5511          * re-add once internal VLAN has changed.
5512          */
5513
5514         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5515         if (err)
5516                 return err;
5517
5518         rocker_port_internal_vlan_id_put(rocker_port,
5519                                          rocker_port->dev->ifindex);
5520         rocker_port->internal_vlan_id =
5521                 rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
5522
5523         rocker_port->bridge_dev = bridge;
5524         switchdev_port_fwd_mark_set(rocker_port->dev, bridge, true);
5525
5526         return rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5527 }
5528
5529 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5530 {
5531         u16 untagged_vid = 0;
5532         int err;
5533
5534         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5535         if (err)
5536                 return err;
5537
5538         rocker_port_internal_vlan_id_put(rocker_port,
5539                                          rocker_port->bridge_dev->ifindex);
5540         rocker_port->internal_vlan_id =
5541                 rocker_port_internal_vlan_id_get(rocker_port,
5542                                                  rocker_port->dev->ifindex);
5543
5544         switchdev_port_fwd_mark_set(rocker_port->dev, rocker_port->bridge_dev,
5545                                     false);
5546         rocker_port->bridge_dev = NULL;
5547
5548         err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5549         if (err)
5550                 return err;
5551
5552         if (rocker_port->dev->flags & IFF_UP)
5553                 err = rocker_port_fwd_enable(rocker_port, NULL, 0);
5554
5555         return err;
5556 }
5557
5558 static int rocker_port_ovs_changed(struct rocker_port *rocker_port,
5559                                    struct net_device *master)
5560 {
5561         int err;
5562
5563         rocker_port->bridge_dev = master;
5564
5565         err = rocker_port_fwd_disable(rocker_port, NULL, 0);
5566         if (err)
5567                 return err;
5568         err = rocker_port_fwd_enable(rocker_port, NULL, 0);
5569
5570         return err;
5571 }
5572
5573 static int rocker_port_master_linked(struct rocker_port *rocker_port,
5574                                      struct net_device *master)
5575 {
5576         int err = 0;
5577
5578         if (netif_is_bridge_master(master))
5579                 err = rocker_port_bridge_join(rocker_port, master);
5580         else if (netif_is_ovs_master(master))
5581                 err = rocker_port_ovs_changed(rocker_port, master);
5582         return err;
5583 }
5584
5585 static int rocker_port_master_unlinked(struct rocker_port *rocker_port)
5586 {
5587         int err = 0;
5588
5589         if (rocker_port_is_bridged(rocker_port))
5590                 err = rocker_port_bridge_leave(rocker_port);
5591         else if (rocker_port_is_ovsed(rocker_port))
5592                 err = rocker_port_ovs_changed(rocker_port, NULL);
5593         return err;
5594 }
5595
5596 static int rocker_netdevice_event(struct notifier_block *unused,
5597                                   unsigned long event, void *ptr)
5598 {
5599         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
5600         struct netdev_notifier_changeupper_info *info;
5601         struct rocker_port *rocker_port;
5602         int err;
5603
5604         if (!rocker_port_dev_check(dev))
5605                 return NOTIFY_DONE;
5606
5607         switch (event) {
5608         case NETDEV_CHANGEUPPER:
5609                 info = ptr;
5610                 if (!info->master)
5611                         goto out;
5612                 rocker_port = netdev_priv(dev);
5613                 if (info->linking) {
5614                         err = rocker_world_port_master_linked(rocker_port,
5615                                                               info->upper_dev);
5616                         if (err)
5617                                 netdev_warn(dev, "failed to reflect master linked (err %d)\n",
5618                                             err);
5619                         err = rocker_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                 } else {
5625                         err = rocker_world_port_master_unlinked(rocker_port,
5626                                                                 info->upper_dev);
5627                         if (err)
5628                                 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
5629                                             err);
5630                         err = rocker_port_master_unlinked(rocker_port);
5631                         if (err)
5632                                 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
5633                                             err);
5634                 }
5635                 break;
5636         }
5637 out:
5638         return NOTIFY_DONE;
5639 }
5640
5641 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5642         .notifier_call = rocker_netdevice_event,
5643 };
5644
5645 /************************************
5646  * Net event notifier event handler
5647  ************************************/
5648
5649 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5650 {
5651         struct rocker_port *rocker_port = netdev_priv(dev);
5652         int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
5653                     ROCKER_OP_FLAG_NOWAIT;
5654         __be32 ip_addr = *(__be32 *)n->primary_key;
5655
5656         return rocker_port_ipv4_neigh(rocker_port, NULL, flags, ip_addr, n->ha);
5657 }
5658
5659 static int rocker_netevent_event(struct notifier_block *unused,
5660                                  unsigned long event, void *ptr)
5661 {
5662         struct rocker_port *rocker_port;
5663         struct net_device *dev;
5664         struct neighbour *n = ptr;
5665         int err;
5666
5667         switch (event) {
5668         case NETEVENT_NEIGH_UPDATE:
5669                 if (n->tbl != &arp_tbl)
5670                         return NOTIFY_DONE;
5671                 dev = n->dev;
5672                 if (!rocker_port_dev_check(dev))
5673                         return NOTIFY_DONE;
5674                 rocker_port = netdev_priv(dev);
5675                 err = rocker_world_port_neigh_update(rocker_port, n);
5676                 if (err)
5677                         netdev_warn(dev, "failed to handle neigh update (err %d)\n",
5678                                     err);
5679                 err = rocker_neigh_update(dev, n);
5680                 if (err)
5681                         netdev_warn(dev,
5682                                     "failed to handle neigh update (err %d)\n",
5683                                     err);
5684                 break;
5685         }
5686
5687         return NOTIFY_DONE;
5688 }
5689
5690 static struct notifier_block rocker_netevent_nb __read_mostly = {
5691         .notifier_call = rocker_netevent_event,
5692 };
5693
5694 /***********************
5695  * Module init and exit
5696  ***********************/
5697
5698 static int __init rocker_module_init(void)
5699 {
5700         int err;
5701
5702         register_netdevice_notifier(&rocker_netdevice_nb);
5703         register_netevent_notifier(&rocker_netevent_nb);
5704         err = pci_register_driver(&rocker_pci_driver);
5705         if (err)
5706                 goto err_pci_register_driver;
5707         return 0;
5708
5709 err_pci_register_driver:
5710         unregister_netevent_notifier(&rocker_netevent_nb);
5711         unregister_netdevice_notifier(&rocker_netdevice_nb);
5712         return err;
5713 }
5714
5715 static void __exit rocker_module_exit(void)
5716 {
5717         unregister_netevent_notifier(&rocker_netevent_nb);
5718         unregister_netdevice_notifier(&rocker_netdevice_nb);
5719         pci_unregister_driver(&rocker_pci_driver);
5720 }
5721
5722 module_init(rocker_module_init);
5723 module_exit(rocker_module_exit);
5724
5725 MODULE_LICENSE("GPL v2");
5726 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5727 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5728 MODULE_DESCRIPTION("Rocker switch device driver");
5729 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);