drivers/net/ethernet/rocker/rocker.c

   1 /*
   2  * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   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 <asm-generic/io-64-nonatomic-lo-hi.h>
  40 #include <generated/utsrelease.h>
  41
  42 #include "rocker.h"
  43
  44 static const char rocker_driver_name[] = "rocker";
  45
  46 static const struct pci_device_id rocker_pci_id_table[] = {
  47         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  48         {0, }
  49 };
  50
  51 struct rocker_flow_tbl_key {
  52         u32 priority;
  53         enum rocker_of_dpa_table_id tbl_id;
  54         union {
  55                 struct {
  56                         u32 in_pport;
  57                         u32 in_pport_mask;
  58                         enum rocker_of_dpa_table_id goto_tbl;
  59                 } ig_port;
  60                 struct {
  61                         u32 in_pport;
  62                         __be16 vlan_id;
  63                         __be16 vlan_id_mask;
  64                         enum rocker_of_dpa_table_id goto_tbl;
  65                         bool untagged;
  66                         __be16 new_vlan_id;
  67                 } vlan;
  68                 struct {
  69                         u32 in_pport;
  70                         u32 in_pport_mask;
  71                         __be16 eth_type;
  72                         u8 eth_dst[ETH_ALEN];
  73                         u8 eth_dst_mask[ETH_ALEN];
  74                         __be16 vlan_id;
  75                         __be16 vlan_id_mask;
  76                         enum rocker_of_dpa_table_id goto_tbl;
  77                         bool copy_to_cpu;
  78                 } term_mac;
  79                 struct {
  80                         __be16 eth_type;
  81                         __be32 dst4;
  82                         __be32 dst4_mask;
  83                         enum rocker_of_dpa_table_id goto_tbl;
  84                         u32 group_id;
  85                 } ucast_routing;
  86                 struct {
  87                         u8 eth_dst[ETH_ALEN];
  88                         u8 eth_dst_mask[ETH_ALEN];
  89                         int has_eth_dst;
  90                         int has_eth_dst_mask;
  91                         __be16 vlan_id;
  92                         u32 tunnel_id;
  93                         enum rocker_of_dpa_table_id goto_tbl;
  94                         u32 group_id;
  95                         bool copy_to_cpu;
  96                 } bridge;
  97                 struct {
  98                         u32 in_pport;
  99                         u32 in_pport_mask;
 100                         u8 eth_src[ETH_ALEN];
 101                         u8 eth_src_mask[ETH_ALEN];
 102                         u8 eth_dst[ETH_ALEN];
 103                         u8 eth_dst_mask[ETH_ALEN];
 104                         __be16 eth_type;
 105                         __be16 vlan_id;
 106                         __be16 vlan_id_mask;
 107                         u8 ip_proto;
 108                         u8 ip_proto_mask;
 109                         u8 ip_tos;
 110                         u8 ip_tos_mask;
 111                         u32 group_id;
 112                 } acl;
 113         };
 114 };
 115
 116 struct rocker_flow_tbl_entry {
 117         struct hlist_node entry;
 118         u32 cmd;
 119         u64 cookie;
 120         struct rocker_flow_tbl_key key;
 121         size_t key_len;
 122         u32 key_crc32; /* key */
 123 };
 124
 125 struct rocker_group_tbl_entry {
 126         struct hlist_node entry;
 127         u32 cmd;
 128         u32 group_id; /* key */
 129         u16 group_count;
 130         u32 *group_ids;
 131         union {
 132                 struct {
 133                         u8 pop_vlan;
 134                 } l2_interface;
 135                 struct {
 136                         u8 eth_src[ETH_ALEN];
 137                         u8 eth_dst[ETH_ALEN];
 138                         __be16 vlan_id;
 139                         u32 group_id;
 140                 } l2_rewrite;
 141                 struct {
 142                         u8 eth_src[ETH_ALEN];
 143                         u8 eth_dst[ETH_ALEN];
 144                         __be16 vlan_id;
 145                         bool ttl_check;
 146                         u32 group_id;
 147                 } l3_unicast;
 148         };
 149 };
 150
 151 struct rocker_fdb_tbl_entry {
 152         struct hlist_node entry;
 153         u32 key_crc32; /* key */
 154         bool learned;
 155         struct rocker_fdb_tbl_key {
 156                 u32 pport;
 157                 u8 addr[ETH_ALEN];
 158                 __be16 vlan_id;
 159         } key;
 160 };
 161
 162 struct rocker_internal_vlan_tbl_entry {
 163         struct hlist_node entry;
 164         int ifindex; /* key */
 165         u32 ref_count;
 166         __be16 vlan_id;
 167 };
 168
 169 struct rocker_neigh_tbl_entry {
 170         struct hlist_node entry;
 171         __be32 ip_addr; /* key */
 172         struct net_device *dev;
 173         u32 ref_count;
 174         u32 index;
 175         u8 eth_dst[ETH_ALEN];
 176         bool ttl_check;
 177 };
 178
 179 struct rocker_desc_info {
 180         char *data; /* mapped */
 181         size_t data_size;
 182         size_t tlv_size;
 183         struct rocker_desc *desc;
 184         dma_addr_t mapaddr;
 185 };
 186
 187 struct rocker_dma_ring_info {
 188         size_t size;
 189         u32 head;
 190         u32 tail;
 191         struct rocker_desc *desc; /* mapped */
 192         dma_addr_t mapaddr;
 193         struct rocker_desc_info *desc_info;
 194         unsigned int type;
 195 };
 196
 197 struct rocker;
 198
 199 enum {
 200         ROCKER_CTRL_LINK_LOCAL_MCAST,
 201         ROCKER_CTRL_LOCAL_ARP,
 202         ROCKER_CTRL_IPV4_MCAST,
 203         ROCKER_CTRL_IPV6_MCAST,
 204         ROCKER_CTRL_DFLT_BRIDGING,
 205         ROCKER_CTRL_MAX,
 206 };
 207
 208 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 209 #define ROCKER_N_INTERNAL_VLANS         255
 210 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 211 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 212
 213 struct rocker_port {
 214         struct net_device *dev;
 215         struct net_device *bridge_dev;
 216         struct rocker *rocker;
 217         unsigned int port_number;
 218         u32 pport;
 219         __be16 internal_vlan_id;
 220         int stp_state;
 221         u32 brport_flags;
 222         bool ctrls[ROCKER_CTRL_MAX];
 223         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 224         struct napi_struct napi_tx;
 225         struct napi_struct napi_rx;
 226         struct rocker_dma_ring_info tx_ring;
 227         struct rocker_dma_ring_info rx_ring;
 228         struct list_head trans_mem;
 229 };
 230
 231 struct rocker {
 232         struct pci_dev *pdev;
 233         u8 __iomem *hw_addr;
 234         struct msix_entry *msix_entries;
 235         unsigned int port_count;
 236         struct rocker_port **ports;
 237         struct {
 238                 u64 id;
 239         } hw;
 240         spinlock_t cmd_ring_lock;               /* for cmd ring accesses */
 241         struct rocker_dma_ring_info cmd_ring;
 242         struct rocker_dma_ring_info event_ring;
 243         DECLARE_HASHTABLE(flow_tbl, 16);
 244         spinlock_t flow_tbl_lock;               /* for flow tbl accesses */
 245         u64 flow_tbl_next_cookie;
 246         DECLARE_HASHTABLE(group_tbl, 16);
 247         spinlock_t group_tbl_lock;              /* for group tbl accesses */
 248         DECLARE_HASHTABLE(fdb_tbl, 16);
 249         spinlock_t fdb_tbl_lock;                /* for fdb tbl accesses */
 250         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 251         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 252         spinlock_t internal_vlan_tbl_lock;      /* for vlan tbl accesses */
 253         DECLARE_HASHTABLE(neigh_tbl, 16);
 254         spinlock_t neigh_tbl_lock;              /* for neigh tbl accesses */
 255         u32 neigh_tbl_next_index;
 256 };
 257
 258 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 259 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 260 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 261 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 262 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 263 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 264 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 265 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 266 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 267
 268 /* Rocker priority levels for flow table entries.  Higher
 269  * priority match takes precedence over lower priority match.
 270  */
 271
 272 enum {
 273         ROCKER_PRIORITY_UNKNOWN = 0,
 274         ROCKER_PRIORITY_IG_PORT = 1,
 275         ROCKER_PRIORITY_VLAN = 1,
 276         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 277         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 278         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 279         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 280         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 281         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 282         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 283         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 284         ROCKER_PRIORITY_ACL_CTRL = 3,
 285         ROCKER_PRIORITY_ACL_NORMAL = 2,
 286         ROCKER_PRIORITY_ACL_DFLT = 1,
 287 };
 288
 289 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 290 {
 291         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 292         u16 end = 0xffe;
 293         u16 _vlan_id = ntohs(vlan_id);
 294
 295         return (_vlan_id >= start && _vlan_id <= end);
 296 }
 297
 298 static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
 299                                       u16 vid, bool *pop_vlan)
 300 {
 301         __be16 vlan_id;
 302
 303         if (pop_vlan)
 304                 *pop_vlan = false;
 305         vlan_id = htons(vid);
 306         if (!vlan_id) {
 307                 vlan_id = rocker_port->internal_vlan_id;
 308                 if (pop_vlan)
 309                         *pop_vlan = true;
 310         }
 311
 312         return vlan_id;
 313 }
 314
 315 static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
 316                                    __be16 vlan_id)
 317 {
 318         if (rocker_vlan_id_is_internal(vlan_id))
 319                 return 0;
 320
 321         return ntohs(vlan_id);
 322 }
 323
 324 static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
 325 {
 326         return !!rocker_port->bridge_dev;
 327 }
 328
 329 static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
 330                                      enum switchdev_trans trans, size_t size)
 331 {
 332         struct list_head *elem = NULL;
 333
 334         /* If in transaction prepare phase, allocate the memory
 335          * and enqueue it on a per-port list.  If in transaction
 336          * commit phase, dequeue the memory from the per-port list
 337          * rather than re-allocating the memory.  The idea is the
 338          * driver code paths for prepare and commit are identical
 339          * so the memory allocated in the prepare phase is the
 340          * memory used in the commit phase.
 341          */
 342
 343         switch (trans) {
 344         case SWITCHDEV_TRANS_PREPARE:
 345                 elem = kzalloc(size + sizeof(*elem), GFP_KERNEL);
 346                 if (!elem)
 347                         return NULL;
 348                 list_add_tail(elem, &rocker_port->trans_mem);
 349                 break;
 350         case SWITCHDEV_TRANS_COMMIT:
 351                 BUG_ON(list_empty(&rocker_port->trans_mem));
 352                 elem = rocker_port->trans_mem.next;
 353                 list_del_init(elem);
 354                 break;
 355         case SWITCHDEV_TRANS_NONE:
 356                 elem = kzalloc(size + sizeof(*elem), GFP_KERNEL);
 357                 if (elem)
 358                         INIT_LIST_HEAD(elem);
 359                 break;
 360         default:
 361                 break;
 362         }
 363
 364         return elem ? elem + 1 : NULL;
 365 }
 366
 367 static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
 368                                  enum switchdev_trans trans, size_t size)
 369 {
 370         return __rocker_port_mem_alloc(rocker_port, trans, size);
 371 }
 372
 373 static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
 374                                  enum switchdev_trans trans, size_t n,
 375                                  size_t size)
 376 {
 377         return __rocker_port_mem_alloc(rocker_port, trans, n * size);
 378 }
 379
 380 static void rocker_port_kfree(struct rocker_port *rocker_port,
 381                               enum switchdev_trans trans, const void *mem)
 382 {
 383         struct list_head *elem;
 384
 385         /* Frees are ignored if in transaction prepare phase.  The
 386          * memory remains on the per-port list until freed in the
 387          * commit phase.
 388          */
 389
 390         if (trans == SWITCHDEV_TRANS_PREPARE)
 391                 return;
 392
 393         elem = (struct list_head *)mem - 1;
 394         BUG_ON(!list_empty(elem));
 395         kfree(elem);
 396 }
 397
 398 struct rocker_wait {
 399         wait_queue_head_t wait;
 400         bool done;
 401 };
 402
 403 static void rocker_wait_reset(struct rocker_wait *wait)
 404 {
 405         wait->done = false;
 406 }
 407
 408 static void rocker_wait_init(struct rocker_wait *wait)
 409 {
 410         init_waitqueue_head(&wait->wait);
 411         rocker_wait_reset(wait);
 412 }
 413
 414 static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
 415                                               enum switchdev_trans trans)
 416 {
 417         struct rocker_wait *wait;
 418
 419         wait = rocker_port_kzalloc(rocker_port, trans, sizeof(*wait));
 420         if (!wait)
 421                 return NULL;
 422         rocker_wait_init(wait);
 423         return wait;
 424 }
 425
 426 static void rocker_wait_destroy(struct rocker_port *rocker_port,
 427                                 enum switchdev_trans trans,
 428                                 struct rocker_wait *wait)
 429 {
 430         rocker_port_kfree(rocker_port, trans, wait);
 431 }
 432
 433 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 434                                       unsigned long timeout)
 435 {
 436         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 437         if (!wait->done)
 438                 return false;
 439         return true;
 440 }
 441
 442 static void rocker_wait_wake_up(struct rocker_wait *wait)
 443 {
 444         wait->done = true;
 445         wake_up(&wait->wait);
 446 }
 447
 448 static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
 449 {
 450         return rocker->msix_entries[vector].vector;
 451 }
 452
 453 static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
 454 {
 455         return rocker_msix_vector(rocker_port->rocker,
 456                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 457 }
 458
 459 static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
 460 {
 461         return rocker_msix_vector(rocker_port->rocker,
 462                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 463 }
 464
 465 #define rocker_write32(rocker, reg, val)        \
 466         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 467 #define rocker_read32(rocker, reg)      \
 468         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 469 #define rocker_write64(rocker, reg, val)        \
 470         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 471 #define rocker_read64(rocker, reg)      \
 472         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 473
 474 /*****************************
 475  * HW basic testing functions
 476  *****************************/
 477
 478 static int rocker_reg_test(struct rocker *rocker)
 479 {
 480         struct pci_dev *pdev = rocker->pdev;
 481         u64 test_reg;
 482         u64 rnd;
 483
 484         rnd = prandom_u32();
 485         rnd >>= 1;
 486         rocker_write32(rocker, TEST_REG, rnd);
 487         test_reg = rocker_read32(rocker, TEST_REG);
 488         if (test_reg != rnd * 2) {
 489                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 490                         test_reg, rnd * 2);
 491                 return -EIO;
 492         }
 493
 494         rnd = prandom_u32();
 495         rnd <<= 31;
 496         rnd |= prandom_u32();
 497         rocker_write64(rocker, TEST_REG64, rnd);
 498         test_reg = rocker_read64(rocker, TEST_REG64);
 499         if (test_reg != rnd * 2) {
 500                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 501                         test_reg, rnd * 2);
 502                 return -EIO;
 503         }
 504
 505         return 0;
 506 }
 507
 508 static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
 509                                u32 test_type, dma_addr_t dma_handle,
 510                                unsigned char *buf, unsigned char *expect,
 511                                size_t size)
 512 {
 513         struct pci_dev *pdev = rocker->pdev;
 514         int i;
 515
 516         rocker_wait_reset(wait);
 517         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 518
 519         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 520                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 521                 return -EIO;
 522         }
 523
 524         for (i = 0; i < size; i++) {
 525                 if (buf[i] != expect[i]) {
 526                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 527                                 buf[i], i, expect[i]);
 528                         return -EIO;
 529                 }
 530         }
 531         return 0;
 532 }
 533
 534 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 535 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 536
 537 static int rocker_dma_test_offset(struct rocker *rocker,
 538                                   struct rocker_wait *wait, int offset)
 539 {
 540         struct pci_dev *pdev = rocker->pdev;
 541         unsigned char *alloc;
 542         unsigned char *buf;
 543         unsigned char *expect;
 544         dma_addr_t dma_handle;
 545         int i;
 546         int err;
 547
 548         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 549                         GFP_KERNEL | GFP_DMA);
 550         if (!alloc)
 551                 return -ENOMEM;
 552         buf = alloc + offset;
 553         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 554
 555         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 556                                     PCI_DMA_BIDIRECTIONAL);
 557         if (pci_dma_mapping_error(pdev, dma_handle)) {
 558                 err = -EIO;
 559                 goto free_alloc;
 560         }
 561
 562         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 563         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 564
 565         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 566         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 567                                   dma_handle, buf, expect,
 568                                   ROCKER_TEST_DMA_BUF_SIZE);
 569         if (err)
 570                 goto unmap;
 571
 572         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 573         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 574                                   dma_handle, buf, expect,
 575                                   ROCKER_TEST_DMA_BUF_SIZE);
 576         if (err)
 577                 goto unmap;
 578
 579         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 580         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 581                 expect[i] = ~buf[i];
 582         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 583                                   dma_handle, buf, expect,
 584                                   ROCKER_TEST_DMA_BUF_SIZE);
 585         if (err)
 586                 goto unmap;
 587
 588 unmap:
 589         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 590                          PCI_DMA_BIDIRECTIONAL);
 591 free_alloc:
 592         kfree(alloc);
 593
 594         return err;
 595 }
 596
 597 static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
 598 {
 599         int i;
 600         int err;
 601
 602         for (i = 0; i < 8; i++) {
 603                 err = rocker_dma_test_offset(rocker, wait, i);
 604                 if (err)
 605                         return err;
 606         }
 607         return 0;
 608 }
 609
 610 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 611 {
 612         struct rocker_wait *wait = dev_id;
 613
 614         rocker_wait_wake_up(wait);
 615
 616         return IRQ_HANDLED;
 617 }
 618
 619 static int rocker_basic_hw_test(struct rocker *rocker)
 620 {
 621         struct pci_dev *pdev = rocker->pdev;
 622         struct rocker_wait wait;
 623         int err;
 624
 625         err = rocker_reg_test(rocker);
 626         if (err) {
 627                 dev_err(&pdev->dev, "reg test failed\n");
 628                 return err;
 629         }
 630
 631         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 632                           rocker_test_irq_handler, 0,
 633                           rocker_driver_name, &wait);
 634         if (err) {
 635                 dev_err(&pdev->dev, "cannot assign test irq\n");
 636                 return err;
 637         }
 638
 639         rocker_wait_init(&wait);
 640         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 641
 642         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 643                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 644                 err = -EIO;
 645                 goto free_irq;
 646         }
 647
 648         err = rocker_dma_test(rocker, &wait);
 649         if (err)
 650                 dev_err(&pdev->dev, "dma test failed\n");
 651
 652 free_irq:
 653         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 654         return err;
 655 }
 656
 657 /******
 658  * TLV
 659  ******/
 660
 661 #define ROCKER_TLV_ALIGNTO 8U
 662 #define ROCKER_TLV_ALIGN(len) \
 663         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 664 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 665
 666 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 667  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 668  * |             Header          | Pad |           Payload           | Pad |
 669  * |      (struct rocker_tlv)    | ing |                             | ing |
 670  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 671  *  <--------------------------- tlv->len -------------------------->
 672  */
 673
 674 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 675                                           int *remaining)
 676 {
 677         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 678
 679         *remaining -= totlen;
 680         return (struct rocker_tlv *) ((char *) tlv + totlen);
 681 }
 682
 683 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 684 {
 685         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 686                tlv->len >= ROCKER_TLV_HDRLEN &&
 687                tlv->len <= remaining;
 688 }
 689
 690 #define rocker_tlv_for_each(pos, head, len, rem)        \
 691         for (pos = head, rem = len;                     \
 692              rocker_tlv_ok(pos, rem);                   \
 693              pos = rocker_tlv_next(pos, &(rem)))
 694
 695 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 696         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 697                             rocker_tlv_len(tlv), rem)
 698
 699 static int rocker_tlv_attr_size(int payload)
 700 {
 701         return ROCKER_TLV_HDRLEN + payload;
 702 }
 703
 704 static int rocker_tlv_total_size(int payload)
 705 {
 706         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 707 }
 708
 709 static int rocker_tlv_padlen(int payload)
 710 {
 711         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 712 }
 713
 714 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 715 {
 716         return tlv->type;
 717 }
 718
 719 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 720 {
 721         return (char *) tlv + ROCKER_TLV_HDRLEN;
 722 }
 723
 724 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 725 {
 726         return tlv->len - ROCKER_TLV_HDRLEN;
 727 }
 728
 729 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 730 {
 731         return *(u8 *) rocker_tlv_data(tlv);
 732 }
 733
 734 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 735 {
 736         return *(u16 *) rocker_tlv_data(tlv);
 737 }
 738
 739 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 740 {
 741         return *(__be16 *) rocker_tlv_data(tlv);
 742 }
 743
 744 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 745 {
 746         return *(u32 *) rocker_tlv_data(tlv);
 747 }
 748
 749 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 750 {
 751         return *(u64 *) rocker_tlv_data(tlv);
 752 }
 753
 754 static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
 755                              const char *buf, int buf_len)
 756 {
 757         const struct rocker_tlv *tlv;
 758         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 759         int rem;
 760
 761         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 762
 763         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 764                 u32 type = rocker_tlv_type(tlv);
 765
 766                 if (type > 0 && type <= maxtype)
 767                         tb[type] = (struct rocker_tlv *) tlv;
 768         }
 769 }
 770
 771 static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
 772                                     const struct rocker_tlv *tlv)
 773 {
 774         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 775                          rocker_tlv_len(tlv));
 776 }
 777
 778 static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
 779                                   struct rocker_desc_info *desc_info)
 780 {
 781         rocker_tlv_parse(tb, maxtype, desc_info->data,
 782                          desc_info->desc->tlv_size);
 783 }
 784
 785 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 786 {
 787         return (struct rocker_tlv *) ((char *) desc_info->data +
 788                                                desc_info->tlv_size);
 789 }
 790
 791 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 792                           int attrtype, int attrlen, const void *data)
 793 {
 794         int tail_room = desc_info->data_size - desc_info->tlv_size;
 795         int total_size = rocker_tlv_total_size(attrlen);
 796         struct rocker_tlv *tlv;
 797
 798         if (unlikely(tail_room < total_size))
 799                 return -EMSGSIZE;
 800
 801         tlv = rocker_tlv_start(desc_info);
 802         desc_info->tlv_size += total_size;
 803         tlv->type = attrtype;
 804         tlv->len = rocker_tlv_attr_size(attrlen);
 805         memcpy(rocker_tlv_data(tlv), data, attrlen);
 806         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 807         return 0;
 808 }
 809
 810 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 811                              int attrtype, u8 value)
 812 {
 813         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 814 }
 815
 816 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 817                               int attrtype, u16 value)
 818 {
 819         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 820 }
 821
 822 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 823                                int attrtype, __be16 value)
 824 {
 825         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 826 }
 827
 828 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 829                               int attrtype, u32 value)
 830 {
 831         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 832 }
 833
 834 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 835                                int attrtype, __be32 value)
 836 {
 837         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 838 }
 839
 840 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 841                               int attrtype, u64 value)
 842 {
 843         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 844 }
 845
 846 static struct rocker_tlv *
 847 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 848 {
 849         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 850
 851         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 852                 return NULL;
 853
 854         return start;
 855 }
 856
 857 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 858                                 struct rocker_tlv *start)
 859 {
 860         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 861 }
 862
 863 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 864                                    struct rocker_tlv *start)
 865 {
 866         desc_info->tlv_size = (char *) start - desc_info->data;
 867 }
 868
 869 /******************************************
 870  * DMA rings and descriptors manipulations
 871  ******************************************/
 872
 873 static u32 __pos_inc(u32 pos, size_t limit)
 874 {
 875         return ++pos == limit ? 0 : pos;
 876 }
 877
 878 static int rocker_desc_err(struct rocker_desc_info *desc_info)
 879 {
 880         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 881
 882         switch (err) {
 883         case ROCKER_OK:
 884                 return 0;
 885         case -ROCKER_ENOENT:
 886                 return -ENOENT;
 887         case -ROCKER_ENXIO:
 888                 return -ENXIO;
 889         case -ROCKER_ENOMEM:
 890                 return -ENOMEM;
 891         case -ROCKER_EEXIST:
 892                 return -EEXIST;
 893         case -ROCKER_EINVAL:
 894                 return -EINVAL;
 895         case -ROCKER_EMSGSIZE:
 896                 return -EMSGSIZE;
 897         case -ROCKER_ENOTSUP:
 898                 return -EOPNOTSUPP;
 899         case -ROCKER_ENOBUFS:
 900                 return -ENOBUFS;
 901         }
 902
 903         return -EINVAL;
 904 }
 905
 906 static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
 907 {
 908         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 909 }
 910
 911 static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
 912 {
 913         u32 comp_err = desc_info->desc->comp_err;
 914
 915         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 916 }
 917
 918 static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
 919 {
 920         return (void *)(uintptr_t)desc_info->desc->cookie;
 921 }
 922
 923 static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
 924                                        void *ptr)
 925 {
 926         desc_info->desc->cookie = (uintptr_t) ptr;
 927 }
 928
 929 static struct rocker_desc_info *
 930 rocker_desc_head_get(struct rocker_dma_ring_info *info)
 931 {
 932         static struct rocker_desc_info *desc_info;
 933         u32 head = __pos_inc(info->head, info->size);
 934
 935         desc_info = &info->desc_info[info->head];
 936         if (head == info->tail)
 937                 return NULL; /* ring full */
 938         desc_info->tlv_size = 0;
 939         return desc_info;
 940 }
 941
 942 static void rocker_desc_commit(struct rocker_desc_info *desc_info)
 943 {
 944         desc_info->desc->buf_size = desc_info->data_size;
 945         desc_info->desc->tlv_size = desc_info->tlv_size;
 946 }
 947
 948 static void rocker_desc_head_set(struct rocker *rocker,
 949                                  struct rocker_dma_ring_info *info,
 950                                  struct rocker_desc_info *desc_info)
 951 {
 952         u32 head = __pos_inc(info->head, info->size);
 953
 954         BUG_ON(head == info->tail);
 955         rocker_desc_commit(desc_info);
 956         info->head = head;
 957         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 958 }
 959
 960 static struct rocker_desc_info *
 961 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 962 {
 963         static struct rocker_desc_info *desc_info;
 964
 965         if (info->tail == info->head)
 966                 return NULL; /* nothing to be done between head and tail */
 967         desc_info = &info->desc_info[info->tail];
 968         if (!rocker_desc_gen(desc_info))
 969                 return NULL; /* gen bit not set, desc is not ready yet */
 970         info->tail = __pos_inc(info->tail, info->size);
 971         desc_info->tlv_size = desc_info->desc->tlv_size;
 972         return desc_info;
 973 }
 974
 975 static void rocker_dma_ring_credits_set(struct rocker *rocker,
 976                                         struct rocker_dma_ring_info *info,
 977                                         u32 credits)
 978 {
 979         if (credits)
 980                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 981 }
 982
 983 static unsigned long rocker_dma_ring_size_fix(size_t size)
 984 {
 985         return max(ROCKER_DMA_SIZE_MIN,
 986                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 987 }
 988
 989 static int rocker_dma_ring_create(struct rocker *rocker,
 990                                   unsigned int type,
 991                                   size_t size,
 992                                   struct rocker_dma_ring_info *info)
 993 {
 994         int i;
 995
 996         BUG_ON(size != rocker_dma_ring_size_fix(size));
 997         info->size = size;
 998         info->type = type;
 999         info->head = 0;
1000         info->tail = 0;
1001         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
1002                                   GFP_KERNEL);
1003         if (!info->desc_info)
1004                 return -ENOMEM;
1005
1006         info->desc = pci_alloc_consistent(rocker->pdev,
1007                                           info->size * sizeof(*info->desc),
1008                                           &info->mapaddr);
1009         if (!info->desc) {
1010                 kfree(info->desc_info);
1011                 return -ENOMEM;
1012         }
1013
1014         for (i = 0; i < info->size; i++)
1015                 info->desc_info[i].desc = &info->desc[i];
1016
1017         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
1018                        ROCKER_DMA_DESC_CTRL_RESET);
1019         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
1020         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
1021
1022         return 0;
1023 }
1024
1025 static void rocker_dma_ring_destroy(struct rocker *rocker,
1026                                     struct rocker_dma_ring_info *info)
1027 {
1028         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
1029
1030         pci_free_consistent(rocker->pdev,
1031                             info->size * sizeof(struct rocker_desc),
1032                             info->desc, info->mapaddr);
1033         kfree(info->desc_info);
1034 }
1035
1036 static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
1037                                              struct rocker_dma_ring_info *info)
1038 {
1039         int i;
1040
1041         BUG_ON(info->head || info->tail);
1042
1043         /* When ring is consumer, we need to advance head for each desc.
1044          * That tells hw that the desc is ready to be used by it.
1045          */
1046         for (i = 0; i < info->size - 1; i++)
1047                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
1048         rocker_desc_commit(&info->desc_info[i]);
1049 }
1050
1051 static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
1052                                       struct rocker_dma_ring_info *info,
1053                                       int direction, size_t buf_size)
1054 {
1055         struct pci_dev *pdev = rocker->pdev;
1056         int i;
1057         int err;
1058
1059         for (i = 0; i < info->size; i++) {
1060                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1061                 struct rocker_desc *desc = &info->desc[i];
1062                 dma_addr_t dma_handle;
1063                 char *buf;
1064
1065                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
1066                 if (!buf) {
1067                         err = -ENOMEM;
1068                         goto rollback;
1069                 }
1070
1071                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1072                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1073                         kfree(buf);
1074                         err = -EIO;
1075                         goto rollback;
1076                 }
1077
1078                 desc_info->data = buf;
1079                 desc_info->data_size = buf_size;
1080                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1081
1082                 desc->buf_addr = dma_handle;
1083                 desc->buf_size = buf_size;
1084         }
1085         return 0;
1086
1087 rollback:
1088         for (i--; i >= 0; i--) {
1089                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1090
1091                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1092                                  desc_info->data_size, direction);
1093                 kfree(desc_info->data);
1094         }
1095         return err;
1096 }
1097
1098 static void rocker_dma_ring_bufs_free(struct rocker *rocker,
1099                                       struct rocker_dma_ring_info *info,
1100                                       int direction)
1101 {
1102         struct pci_dev *pdev = rocker->pdev;
1103         int i;
1104
1105         for (i = 0; i < info->size; i++) {
1106                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1107                 struct rocker_desc *desc = &info->desc[i];
1108
1109                 desc->buf_addr = 0;
1110                 desc->buf_size = 0;
1111                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1112                                  desc_info->data_size, direction);
1113                 kfree(desc_info->data);
1114         }
1115 }
1116
1117 static int rocker_dma_rings_init(struct rocker *rocker)
1118 {
1119         struct pci_dev *pdev = rocker->pdev;
1120         int err;
1121
1122         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1123                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1124                                      &rocker->cmd_ring);
1125         if (err) {
1126                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1127                 return err;
1128         }
1129
1130         spin_lock_init(&rocker->cmd_ring_lock);
1131
1132         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1133                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1134         if (err) {
1135                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1136                 goto err_dma_cmd_ring_bufs_alloc;
1137         }
1138
1139         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1140                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1141                                      &rocker->event_ring);
1142         if (err) {
1143                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1144                 goto err_dma_event_ring_create;
1145         }
1146
1147         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1148                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1149         if (err) {
1150                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1151                 goto err_dma_event_ring_bufs_alloc;
1152         }
1153         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1154         return 0;
1155
1156 err_dma_event_ring_bufs_alloc:
1157         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1158 err_dma_event_ring_create:
1159         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1160                                   PCI_DMA_BIDIRECTIONAL);
1161 err_dma_cmd_ring_bufs_alloc:
1162         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1163         return err;
1164 }
1165
1166 static void rocker_dma_rings_fini(struct rocker *rocker)
1167 {
1168         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1169                                   PCI_DMA_BIDIRECTIONAL);
1170         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1171         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1172                                   PCI_DMA_BIDIRECTIONAL);
1173         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1174 }
1175
1176 static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1177                                       struct rocker_port *rocker_port,
1178                                       struct rocker_desc_info *desc_info,
1179                                       struct sk_buff *skb, size_t buf_len)
1180 {
1181         struct pci_dev *pdev = rocker->pdev;
1182         dma_addr_t dma_handle;
1183
1184         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1185                                     PCI_DMA_FROMDEVICE);
1186         if (pci_dma_mapping_error(pdev, dma_handle))
1187                 return -EIO;
1188         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1189                 goto tlv_put_failure;
1190         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1191                 goto tlv_put_failure;
1192         return 0;
1193
1194 tlv_put_failure:
1195         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1196         desc_info->tlv_size = 0;
1197         return -EMSGSIZE;
1198 }
1199
1200 static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1201 {
1202         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1203 }
1204
1205 static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1206                                         struct rocker_port *rocker_port,
1207                                         struct rocker_desc_info *desc_info)
1208 {
1209         struct net_device *dev = rocker_port->dev;
1210         struct sk_buff *skb;
1211         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1212         int err;
1213
1214         /* Ensure that hw will see tlv_size zero in case of an error.
1215          * That tells hw to use another descriptor.
1216          */
1217         rocker_desc_cookie_ptr_set(desc_info, NULL);
1218         desc_info->tlv_size = 0;
1219
1220         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1221         if (!skb)
1222                 return -ENOMEM;
1223         err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1224                                          skb, buf_len);
1225         if (err) {
1226                 dev_kfree_skb_any(skb);
1227                 return err;
1228         }
1229         rocker_desc_cookie_ptr_set(desc_info, skb);
1230         return 0;
1231 }
1232
1233 static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1234                                          struct rocker_tlv **attrs)
1235 {
1236         struct pci_dev *pdev = rocker->pdev;
1237         dma_addr_t dma_handle;
1238         size_t len;
1239
1240         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1241             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1242                 return;
1243         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1244         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1245         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1246 }
1247
1248 static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1249                                         struct rocker_desc_info *desc_info)
1250 {
1251         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1252         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1253
1254         if (!skb)
1255                 return;
1256         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1257         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1258         dev_kfree_skb_any(skb);
1259 }
1260
1261 static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1262                                          struct rocker_port *rocker_port)
1263 {
1264         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1265         int i;
1266         int err;
1267
1268         for (i = 0; i < rx_ring->size; i++) {
1269                 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1270                                                    &rx_ring->desc_info[i]);
1271                 if (err)
1272                         goto rollback;
1273         }
1274         return 0;
1275
1276 rollback:
1277         for (i--; i >= 0; i--)
1278                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1279         return err;
1280 }
1281
1282 static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1283                                          struct rocker_port *rocker_port)
1284 {
1285         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1286         int i;
1287
1288         for (i = 0; i < rx_ring->size; i++)
1289                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1290 }
1291
1292 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1293 {
1294         struct rocker *rocker = rocker_port->rocker;
1295         int err;
1296
1297         err = rocker_dma_ring_create(rocker,
1298                                      ROCKER_DMA_TX(rocker_port->port_number),
1299                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1300                                      &rocker_port->tx_ring);
1301         if (err) {
1302                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1303                 return err;
1304         }
1305
1306         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1307                                          PCI_DMA_TODEVICE,
1308                                          ROCKER_DMA_TX_DESC_SIZE);
1309         if (err) {
1310                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1311                 goto err_dma_tx_ring_bufs_alloc;
1312         }
1313
1314         err = rocker_dma_ring_create(rocker,
1315                                      ROCKER_DMA_RX(rocker_port->port_number),
1316                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1317                                      &rocker_port->rx_ring);
1318         if (err) {
1319                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1320                 goto err_dma_rx_ring_create;
1321         }
1322
1323         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1324                                          PCI_DMA_BIDIRECTIONAL,
1325                                          ROCKER_DMA_RX_DESC_SIZE);
1326         if (err) {
1327                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1328                 goto err_dma_rx_ring_bufs_alloc;
1329         }
1330
1331         err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1332         if (err) {
1333                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1334                 goto err_dma_rx_ring_skbs_alloc;
1335         }
1336         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1337
1338         return 0;
1339
1340 err_dma_rx_ring_skbs_alloc:
1341         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1342                                   PCI_DMA_BIDIRECTIONAL);
1343 err_dma_rx_ring_bufs_alloc:
1344         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1345 err_dma_rx_ring_create:
1346         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1347                                   PCI_DMA_TODEVICE);
1348 err_dma_tx_ring_bufs_alloc:
1349         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1350         return err;
1351 }
1352
1353 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1354 {
1355         struct rocker *rocker = rocker_port->rocker;
1356
1357         rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1358         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1359                                   PCI_DMA_BIDIRECTIONAL);
1360         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1361         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1362                                   PCI_DMA_TODEVICE);
1363         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1364 }
1365
1366 static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1367 {
1368         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1369
1370         if (enable)
1371                 val |= 1ULL << rocker_port->pport;
1372         else
1373                 val &= ~(1ULL << rocker_port->pport);
1374         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1375 }
1376
1377 /********************************
1378  * Interrupt handler and helpers
1379  ********************************/
1380
1381 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1382 {
1383         struct rocker *rocker = dev_id;
1384         struct rocker_desc_info *desc_info;
1385         struct rocker_wait *wait;
1386         u32 credits = 0;
1387
1388         spin_lock(&rocker->cmd_ring_lock);
1389         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1390                 wait = rocker_desc_cookie_ptr_get(desc_info);
1391                 rocker_wait_wake_up(wait);
1392                 credits++;
1393         }
1394         spin_unlock(&rocker->cmd_ring_lock);
1395         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1396
1397         return IRQ_HANDLED;
1398 }
1399
1400 static void rocker_port_link_up(struct rocker_port *rocker_port)
1401 {
1402         netif_carrier_on(rocker_port->dev);
1403         netdev_info(rocker_port->dev, "Link is up\n");
1404 }
1405
1406 static void rocker_port_link_down(struct rocker_port *rocker_port)
1407 {
1408         netif_carrier_off(rocker_port->dev);
1409         netdev_info(rocker_port->dev, "Link is down\n");
1410 }
1411
1412 static int rocker_event_link_change(struct rocker *rocker,
1413                                     const struct rocker_tlv *info)
1414 {
1415         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1416         unsigned int port_number;
1417         bool link_up;
1418         struct rocker_port *rocker_port;
1419
1420         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1421         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1422             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1423                 return -EIO;
1424         port_number =
1425                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1426         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1427
1428         if (port_number >= rocker->port_count)
1429                 return -EINVAL;
1430
1431         rocker_port = rocker->ports[port_number];
1432         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1433                 if (link_up)
1434                         rocker_port_link_up(rocker_port);
1435                 else
1436                         rocker_port_link_down(rocker_port);
1437         }
1438
1439         return 0;
1440 }
1441
1442 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
1443 #define ROCKER_OP_FLAG_LEARNED          BIT(1)
1444 #define ROCKER_OP_FLAG_REFRESH          BIT(2)
1445
1446 static int rocker_port_fdb(struct rocker_port *rocker_port,
1447                            enum switchdev_trans trans,
1448                            const unsigned char *addr,
1449                            __be16 vlan_id, int flags);
1450
1451 struct rocker_mac_vlan_seen_work {
1452         struct work_struct work;
1453         struct rocker_port *rocker_port;
1454         int flags;
1455         unsigned char addr[ETH_ALEN];
1456         __be16 vlan_id;
1457 };
1458
1459 static void rocker_event_mac_vlan_seen_work(struct work_struct *work)
1460 {
1461         struct rocker_mac_vlan_seen_work *sw =
1462                 container_of(work, struct rocker_mac_vlan_seen_work, work);
1463
1464         rtnl_lock();
1465         rocker_port_fdb(sw->rocker_port, SWITCHDEV_TRANS_NONE,
1466                         sw->addr, sw->vlan_id, sw->flags);
1467         rtnl_unlock();
1468
1469         kfree(work);
1470 }
1471
1472 static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1473                                       const struct rocker_tlv *info)
1474 {
1475         struct rocker_mac_vlan_seen_work *sw;
1476         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1477         unsigned int port_number;
1478         struct rocker_port *rocker_port;
1479         unsigned char *addr;
1480         int flags = ROCKER_OP_FLAG_LEARNED;
1481         __be16 vlan_id;
1482
1483         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1484         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1485             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1486             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1487                 return -EIO;
1488         port_number =
1489                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1490         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1491         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1492
1493         if (port_number >= rocker->port_count)
1494                 return -EINVAL;
1495
1496         rocker_port = rocker->ports[port_number];
1497
1498         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1499             rocker_port->stp_state != BR_STATE_FORWARDING)
1500                 return 0;
1501
1502         sw = kmalloc(sizeof(*sw), GFP_ATOMIC);
1503         if (!sw)
1504                 return -ENOMEM;
1505
1506         INIT_WORK(&sw->work, rocker_event_mac_vlan_seen_work);
1507
1508         sw->rocker_port = rocker_port;
1509         sw->flags = flags;
1510         ether_addr_copy(sw->addr, addr);
1511         sw->vlan_id = vlan_id;
1512
1513         schedule_work(&sw->work);
1514
1515         return 0;
1516 }
1517
1518 static int rocker_event_process(struct rocker *rocker,
1519                                 struct rocker_desc_info *desc_info)
1520 {
1521         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1522         struct rocker_tlv *info;
1523         u16 type;
1524
1525         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1526         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1527             !attrs[ROCKER_TLV_EVENT_INFO])
1528                 return -EIO;
1529
1530         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1531         info = attrs[ROCKER_TLV_EVENT_INFO];
1532
1533         switch (type) {
1534         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1535                 return rocker_event_link_change(rocker, info);
1536         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1537                 return rocker_event_mac_vlan_seen(rocker, info);
1538         }
1539
1540         return -EOPNOTSUPP;
1541 }
1542
1543 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1544 {
1545         struct rocker *rocker = dev_id;
1546         struct pci_dev *pdev = rocker->pdev;
1547         struct rocker_desc_info *desc_info;
1548         u32 credits = 0;
1549         int err;
1550
1551         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1552                 err = rocker_desc_err(desc_info);
1553                 if (err) {
1554                         dev_err(&pdev->dev, "event desc received with err %d\n",
1555                                 err);
1556                 } else {
1557                         err = rocker_event_process(rocker, desc_info);
1558                         if (err)
1559                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1560                                         err);
1561                 }
1562                 rocker_desc_gen_clear(desc_info);
1563                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1564                 credits++;
1565         }
1566         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1567
1568         return IRQ_HANDLED;
1569 }
1570
1571 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1572 {
1573         struct rocker_port *rocker_port = dev_id;
1574
1575         napi_schedule(&rocker_port->napi_tx);
1576         return IRQ_HANDLED;
1577 }
1578
1579 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1580 {
1581         struct rocker_port *rocker_port = dev_id;
1582
1583         napi_schedule(&rocker_port->napi_rx);
1584         return IRQ_HANDLED;
1585 }
1586
1587 /********************
1588  * Command interface
1589  ********************/
1590
1591 typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1592                                struct rocker_port *rocker_port,
1593                                struct rocker_desc_info *desc_info,
1594                                void *priv);
1595
1596 static int rocker_cmd_exec(struct rocker *rocker,
1597                            struct rocker_port *rocker_port,
1598                            enum switchdev_trans trans,
1599                            rocker_cmd_cb_t prepare, void *prepare_priv,
1600                            rocker_cmd_cb_t process, void *process_priv)
1601 {
1602         struct rocker_desc_info *desc_info;
1603         struct rocker_wait *wait;
1604         unsigned long flags;
1605         int err;
1606
1607         wait = rocker_wait_create(rocker_port, trans);
1608         if (!wait)
1609                 return -ENOMEM;
1610
1611         spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1612
1613         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1614         if (!desc_info) {
1615                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1616                 err = -EAGAIN;
1617                 goto out;
1618         }
1619
1620         err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1621         if (err) {
1622                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1623                 goto out;
1624         }
1625
1626         rocker_desc_cookie_ptr_set(desc_info, wait);
1627
1628         if (trans != SWITCHDEV_TRANS_PREPARE)
1629                 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1630
1631         spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1632
1633         if (trans != SWITCHDEV_TRANS_PREPARE)
1634                 if (!rocker_wait_event_timeout(wait, HZ / 10))
1635                         return -EIO;
1636
1637         err = rocker_desc_err(desc_info);
1638         if (err)
1639                 return err;
1640
1641         if (process)
1642                 err = process(rocker, rocker_port, desc_info, process_priv);
1643
1644         rocker_desc_gen_clear(desc_info);
1645 out:
1646         rocker_wait_destroy(rocker_port, trans, wait);
1647         return err;
1648 }
1649
1650 static int
1651 rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1652                                   struct rocker_port *rocker_port,
1653                                   struct rocker_desc_info *desc_info,
1654                                   void *priv)
1655 {
1656         struct rocker_tlv *cmd_info;
1657
1658         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1659                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1660                 return -EMSGSIZE;
1661         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1662         if (!cmd_info)
1663                 return -EMSGSIZE;
1664         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1665                                rocker_port->pport))
1666                 return -EMSGSIZE;
1667         rocker_tlv_nest_end(desc_info, cmd_info);
1668         return 0;
1669 }
1670
1671 static int
1672 rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1673                                           struct rocker_port *rocker_port,
1674                                           struct rocker_desc_info *desc_info,
1675                                           void *priv)
1676 {
1677         struct ethtool_cmd *ecmd = priv;
1678         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1679         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1680         u32 speed;
1681         u8 duplex;
1682         u8 autoneg;
1683
1684         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1685         if (!attrs[ROCKER_TLV_CMD_INFO])
1686                 return -EIO;
1687
1688         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1689                                 attrs[ROCKER_TLV_CMD_INFO]);
1690         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1691             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1692             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1693                 return -EIO;
1694
1695         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1696         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1697         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1698
1699         ecmd->transceiver = XCVR_INTERNAL;
1700         ecmd->supported = SUPPORTED_TP;
1701         ecmd->phy_address = 0xff;
1702         ecmd->port = PORT_TP;
1703         ethtool_cmd_speed_set(ecmd, speed);
1704         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1705         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1706
1707         return 0;
1708 }
1709
1710 static int
1711 rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1712                                           struct rocker_port *rocker_port,
1713                                           struct rocker_desc_info *desc_info,
1714                                           void *priv)
1715 {
1716         unsigned char *macaddr = priv;
1717         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1718         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1719         struct rocker_tlv *attr;
1720
1721         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1722         if (!attrs[ROCKER_TLV_CMD_INFO])
1723                 return -EIO;
1724
1725         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1726                                 attrs[ROCKER_TLV_CMD_INFO]);
1727         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1728         if (!attr)
1729                 return -EIO;
1730
1731         if (rocker_tlv_len(attr) != ETH_ALEN)
1732                 return -EINVAL;
1733
1734         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1735         return 0;
1736 }
1737
1738 struct port_name {
1739         char *buf;
1740         size_t len;
1741 };
1742
1743 static int
1744 rocker_cmd_get_port_settings_phys_name_proc(struct rocker *rocker,
1745                                             struct rocker_port *rocker_port,
1746                                             struct rocker_desc_info *desc_info,
1747                                             void *priv)
1748 {
1749         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1750         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1751         struct port_name *name = priv;
1752         struct rocker_tlv *attr;
1753         size_t i, j, len;
1754         char *str;
1755
1756         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1757         if (!attrs[ROCKER_TLV_CMD_INFO])
1758                 return -EIO;
1759
1760         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1761                                 attrs[ROCKER_TLV_CMD_INFO]);
1762         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1763         if (!attr)
1764                 return -EIO;
1765
1766         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1767         str = rocker_tlv_data(attr);
1768
1769         /* make sure name only contains alphanumeric characters */
1770         for (i = j = 0; i < len; ++i) {
1771                 if (isalnum(str[i])) {
1772                         name->buf[j] = str[i];
1773                         j++;
1774                 }
1775         }
1776
1777         if (j == 0)
1778                 return -EIO;
1779
1780         name->buf[j] = '\0';
1781
1782         return 0;
1783 }
1784
1785 static int
1786 rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1787                                           struct rocker_port *rocker_port,
1788                                           struct rocker_desc_info *desc_info,
1789                                           void *priv)
1790 {
1791         struct ethtool_cmd *ecmd = priv;
1792         struct rocker_tlv *cmd_info;
1793
1794         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1795                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1796                 return -EMSGSIZE;
1797         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1798         if (!cmd_info)
1799                 return -EMSGSIZE;
1800         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1801                                rocker_port->pport))
1802                 return -EMSGSIZE;
1803         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1804                                ethtool_cmd_speed(ecmd)))
1805                 return -EMSGSIZE;
1806         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1807                               ecmd->duplex))
1808                 return -EMSGSIZE;
1809         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1810                               ecmd->autoneg))
1811                 return -EMSGSIZE;
1812         rocker_tlv_nest_end(desc_info, cmd_info);
1813         return 0;
1814 }
1815
1816 static int
1817 rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1818                                           struct rocker_port *rocker_port,
1819                                           struct rocker_desc_info *desc_info,
1820                                           void *priv)
1821 {
1822         unsigned char *macaddr = priv;
1823         struct rocker_tlv *cmd_info;
1824
1825         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1826                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1827                 return -EMSGSIZE;
1828         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1829         if (!cmd_info)
1830                 return -EMSGSIZE;
1831         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1832                                rocker_port->pport))
1833                 return -EMSGSIZE;
1834         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1835                            ETH_ALEN, macaddr))
1836                 return -EMSGSIZE;
1837         rocker_tlv_nest_end(desc_info, cmd_info);
1838         return 0;
1839 }
1840
1841 static int
1842 rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1843                                   struct rocker_port *rocker_port,
1844                                   struct rocker_desc_info *desc_info,
1845                                   void *priv)
1846 {
1847         struct rocker_tlv *cmd_info;
1848
1849         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1850                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1851                 return -EMSGSIZE;
1852         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1853         if (!cmd_info)
1854                 return -EMSGSIZE;
1855         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1856                                rocker_port->pport))
1857                 return -EMSGSIZE;
1858         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1859                               !!(rocker_port->brport_flags & BR_LEARNING)))
1860                 return -EMSGSIZE;
1861         rocker_tlv_nest_end(desc_info, cmd_info);
1862         return 0;
1863 }
1864
1865 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1866                                                 struct ethtool_cmd *ecmd)
1867 {
1868         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1869                                SWITCHDEV_TRANS_NONE,
1870                                rocker_cmd_get_port_settings_prep, NULL,
1871                                rocker_cmd_get_port_settings_ethtool_proc,
1872                                ecmd);
1873 }
1874
1875 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1876                                                 unsigned char *macaddr)
1877 {
1878         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1879                                SWITCHDEV_TRANS_NONE,
1880                                rocker_cmd_get_port_settings_prep, NULL,
1881                                rocker_cmd_get_port_settings_macaddr_proc,
1882                                macaddr);
1883 }
1884
1885 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1886                                                 struct ethtool_cmd *ecmd)
1887 {
1888         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1889                                SWITCHDEV_TRANS_NONE,
1890                                rocker_cmd_set_port_settings_ethtool_prep,
1891                                ecmd, NULL, NULL);
1892 }
1893
1894 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1895                                                 unsigned char *macaddr)
1896 {
1897         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1898                                SWITCHDEV_TRANS_NONE,
1899                                rocker_cmd_set_port_settings_macaddr_prep,
1900                                macaddr, NULL, NULL);
1901 }
1902
1903 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1904                                     enum switchdev_trans trans)
1905 {
1906         return rocker_cmd_exec(rocker_port->rocker, rocker_port, trans,
1907                                rocker_cmd_set_port_learning_prep,
1908                                NULL, NULL, NULL);
1909 }
1910
1911 static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1912                                            struct rocker_flow_tbl_entry *entry)
1913 {
1914         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1915                                entry->key.ig_port.in_pport))
1916                 return -EMSGSIZE;
1917         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1918                                entry->key.ig_port.in_pport_mask))
1919                 return -EMSGSIZE;
1920         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1921                                entry->key.ig_port.goto_tbl))
1922                 return -EMSGSIZE;
1923
1924         return 0;
1925 }
1926
1927 static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1928                                         struct rocker_flow_tbl_entry *entry)
1929 {
1930         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1931                                entry->key.vlan.in_pport))
1932                 return -EMSGSIZE;
1933         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1934                                 entry->key.vlan.vlan_id))
1935                 return -EMSGSIZE;
1936         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1937                                 entry->key.vlan.vlan_id_mask))
1938                 return -EMSGSIZE;
1939         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1940                                entry->key.vlan.goto_tbl))
1941                 return -EMSGSIZE;
1942         if (entry->key.vlan.untagged &&
1943             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1944                                 entry->key.vlan.new_vlan_id))
1945                 return -EMSGSIZE;
1946
1947         return 0;
1948 }
1949
1950 static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1951                                             struct rocker_flow_tbl_entry *entry)
1952 {
1953         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1954                                entry->key.term_mac.in_pport))
1955                 return -EMSGSIZE;
1956         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1957                                entry->key.term_mac.in_pport_mask))
1958                 return -EMSGSIZE;
1959         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1960                                 entry->key.term_mac.eth_type))
1961                 return -EMSGSIZE;
1962         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1963                            ETH_ALEN, entry->key.term_mac.eth_dst))
1964                 return -EMSGSIZE;
1965         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1966                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1967                 return -EMSGSIZE;
1968         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1969                                 entry->key.term_mac.vlan_id))
1970                 return -EMSGSIZE;
1971         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1972                                 entry->key.term_mac.vlan_id_mask))
1973                 return -EMSGSIZE;
1974         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1975                                entry->key.term_mac.goto_tbl))
1976                 return -EMSGSIZE;
1977         if (entry->key.term_mac.copy_to_cpu &&
1978             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1979                               entry->key.term_mac.copy_to_cpu))
1980                 return -EMSGSIZE;
1981
1982         return 0;
1983 }
1984
1985 static int
1986 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1987                                       struct rocker_flow_tbl_entry *entry)
1988 {
1989         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1990                                 entry->key.ucast_routing.eth_type))
1991                 return -EMSGSIZE;
1992         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1993                                 entry->key.ucast_routing.dst4))
1994                 return -EMSGSIZE;
1995         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1996                                 entry->key.ucast_routing.dst4_mask))
1997                 return -EMSGSIZE;
1998         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1999                                entry->key.ucast_routing.goto_tbl))
2000                 return -EMSGSIZE;
2001         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2002                                entry->key.ucast_routing.group_id))
2003                 return -EMSGSIZE;
2004
2005         return 0;
2006 }
2007
2008 static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2009                                           struct rocker_flow_tbl_entry *entry)
2010 {
2011         if (entry->key.bridge.has_eth_dst &&
2012             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2013                            ETH_ALEN, entry->key.bridge.eth_dst))
2014                 return -EMSGSIZE;
2015         if (entry->key.bridge.has_eth_dst_mask &&
2016             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2017                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
2018                 return -EMSGSIZE;
2019         if (entry->key.bridge.vlan_id &&
2020             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2021                                 entry->key.bridge.vlan_id))
2022                 return -EMSGSIZE;
2023         if (entry->key.bridge.tunnel_id &&
2024             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2025                                entry->key.bridge.tunnel_id))
2026                 return -EMSGSIZE;
2027         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2028                                entry->key.bridge.goto_tbl))
2029                 return -EMSGSIZE;
2030         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2031                                entry->key.bridge.group_id))
2032                 return -EMSGSIZE;
2033         if (entry->key.bridge.copy_to_cpu &&
2034             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2035                               entry->key.bridge.copy_to_cpu))
2036                 return -EMSGSIZE;
2037
2038         return 0;
2039 }
2040
2041 static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2042                                        struct rocker_flow_tbl_entry *entry)
2043 {
2044         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2045                                entry->key.acl.in_pport))
2046                 return -EMSGSIZE;
2047         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2048                                entry->key.acl.in_pport_mask))
2049                 return -EMSGSIZE;
2050         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2051                            ETH_ALEN, entry->key.acl.eth_src))
2052                 return -EMSGSIZE;
2053         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2054                            ETH_ALEN, entry->key.acl.eth_src_mask))
2055                 return -EMSGSIZE;
2056         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2057                            ETH_ALEN, entry->key.acl.eth_dst))
2058                 return -EMSGSIZE;
2059         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2060                            ETH_ALEN, entry->key.acl.eth_dst_mask))
2061                 return -EMSGSIZE;
2062         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2063                                 entry->key.acl.eth_type))
2064                 return -EMSGSIZE;
2065         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2066                                 entry->key.acl.vlan_id))
2067                 return -EMSGSIZE;
2068         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2069                                 entry->key.acl.vlan_id_mask))
2070                 return -EMSGSIZE;
2071
2072         switch (ntohs(entry->key.acl.eth_type)) {
2073         case ETH_P_IP:
2074         case ETH_P_IPV6:
2075                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2076                                       entry->key.acl.ip_proto))
2077                         return -EMSGSIZE;
2078                 if (rocker_tlv_put_u8(desc_info,
2079                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2080                                       entry->key.acl.ip_proto_mask))
2081                         return -EMSGSIZE;
2082                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2083                                       entry->key.acl.ip_tos & 0x3f))
2084                         return -EMSGSIZE;
2085                 if (rocker_tlv_put_u8(desc_info,
2086                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2087                                       entry->key.acl.ip_tos_mask & 0x3f))
2088                         return -EMSGSIZE;
2089                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2090                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
2091                         return -EMSGSIZE;
2092                 if (rocker_tlv_put_u8(desc_info,
2093                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2094                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2095                         return -EMSGSIZE;
2096                 break;
2097         }
2098
2099         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2100             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2101                                entry->key.acl.group_id))
2102                 return -EMSGSIZE;
2103
2104         return 0;
2105 }
2106
2107 static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
2108                                    struct rocker_port *rocker_port,
2109                                    struct rocker_desc_info *desc_info,
2110                                    void *priv)
2111 {
2112         struct rocker_flow_tbl_entry *entry = priv;
2113         struct rocker_tlv *cmd_info;
2114         int err = 0;
2115
2116         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2117                 return -EMSGSIZE;
2118         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2119         if (!cmd_info)
2120                 return -EMSGSIZE;
2121         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2122                                entry->key.tbl_id))
2123                 return -EMSGSIZE;
2124         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2125                                entry->key.priority))
2126                 return -EMSGSIZE;
2127         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2128                 return -EMSGSIZE;
2129         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2130                                entry->cookie))
2131                 return -EMSGSIZE;
2132
2133         switch (entry->key.tbl_id) {
2134         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2135                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2136                 break;
2137         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2138                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2139                 break;
2140         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2141                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2142                 break;
2143         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2144                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2145                 break;
2146         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2147                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2148                 break;
2149         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2150                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2151                 break;
2152         default:
2153                 err = -ENOTSUPP;
2154                 break;
2155         }
2156
2157         if (err)
2158                 return err;
2159
2160         rocker_tlv_nest_end(desc_info, cmd_info);
2161
2162         return 0;
2163 }
2164
2165 static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
2166                                    struct rocker_port *rocker_port,
2167                                    struct rocker_desc_info *desc_info,
2168                                    void *priv)
2169 {
2170         const struct rocker_flow_tbl_entry *entry = priv;
2171         struct rocker_tlv *cmd_info;
2172
2173         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2174                 return -EMSGSIZE;
2175         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2176         if (!cmd_info)
2177                 return -EMSGSIZE;
2178         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2179                                entry->cookie))
2180                 return -EMSGSIZE;
2181         rocker_tlv_nest_end(desc_info, cmd_info);
2182
2183         return 0;
2184 }
2185
2186 static int
2187 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2188                                       struct rocker_group_tbl_entry *entry)
2189 {
2190         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2191                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2192                 return -EMSGSIZE;
2193         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2194                               entry->l2_interface.pop_vlan))
2195                 return -EMSGSIZE;
2196
2197         return 0;
2198 }
2199
2200 static int
2201 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2202                                     struct rocker_group_tbl_entry *entry)
2203 {
2204         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2205                                entry->l2_rewrite.group_id))
2206                 return -EMSGSIZE;
2207         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2208             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2209                            ETH_ALEN, entry->l2_rewrite.eth_src))
2210                 return -EMSGSIZE;
2211         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2212             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2213                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2214                 return -EMSGSIZE;
2215         if (entry->l2_rewrite.vlan_id &&
2216             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2217                                 entry->l2_rewrite.vlan_id))
2218                 return -EMSGSIZE;
2219
2220         return 0;
2221 }
2222
2223 static int
2224 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2225                                    struct rocker_group_tbl_entry *entry)
2226 {
2227         int i;
2228         struct rocker_tlv *group_ids;
2229
2230         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2231                                entry->group_count))
2232                 return -EMSGSIZE;
2233
2234         group_ids = rocker_tlv_nest_start(desc_info,
2235                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2236         if (!group_ids)
2237                 return -EMSGSIZE;
2238
2239         for (i = 0; i < entry->group_count; i++)
2240                 /* Note TLV array is 1-based */
2241                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2242                         return -EMSGSIZE;
2243
2244         rocker_tlv_nest_end(desc_info, group_ids);
2245
2246         return 0;
2247 }
2248
2249 static int
2250 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2251                                     struct rocker_group_tbl_entry *entry)
2252 {
2253         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2254             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2255                            ETH_ALEN, entry->l3_unicast.eth_src))
2256                 return -EMSGSIZE;
2257         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2258             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2259                            ETH_ALEN, entry->l3_unicast.eth_dst))
2260                 return -EMSGSIZE;
2261         if (entry->l3_unicast.vlan_id &&
2262             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2263                                 entry->l3_unicast.vlan_id))
2264                 return -EMSGSIZE;
2265         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2266                               entry->l3_unicast.ttl_check))
2267                 return -EMSGSIZE;
2268         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2269                                entry->l3_unicast.group_id))
2270                 return -EMSGSIZE;
2271
2272         return 0;
2273 }
2274
2275 static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2276                                     struct rocker_port *rocker_port,
2277                                     struct rocker_desc_info *desc_info,
2278                                     void *priv)
2279 {
2280         struct rocker_group_tbl_entry *entry = priv;
2281         struct rocker_tlv *cmd_info;
2282         int err = 0;
2283
2284         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2285                 return -EMSGSIZE;
2286         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2287         if (!cmd_info)
2288                 return -EMSGSIZE;
2289
2290         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2291                                entry->group_id))
2292                 return -EMSGSIZE;
2293
2294         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2295         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2296                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2297                 break;
2298         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2299                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2300                 break;
2301         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2302         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2303                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2304                 break;
2305         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2306                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2307                 break;
2308         default:
2309                 err = -ENOTSUPP;
2310                 break;
2311         }
2312
2313         if (err)
2314                 return err;
2315
2316         rocker_tlv_nest_end(desc_info, cmd_info);
2317
2318         return 0;
2319 }
2320
2321 static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2322                                     struct rocker_port *rocker_port,
2323                                     struct rocker_desc_info *desc_info,
2324                                     void *priv)
2325 {
2326         const struct rocker_group_tbl_entry *entry = priv;
2327         struct rocker_tlv *cmd_info;
2328
2329         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2330                 return -EMSGSIZE;
2331         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2332         if (!cmd_info)
2333                 return -EMSGSIZE;
2334         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2335                                entry->group_id))
2336                 return -EMSGSIZE;
2337         rocker_tlv_nest_end(desc_info, cmd_info);
2338
2339         return 0;
2340 }
2341
2342 /***************************************************
2343  * Flow, group, FDB, internal VLAN and neigh tables
2344  ***************************************************/
2345
2346 static int rocker_init_tbls(struct rocker *rocker)
2347 {
2348         hash_init(rocker->flow_tbl);
2349         spin_lock_init(&rocker->flow_tbl_lock);
2350
2351         hash_init(rocker->group_tbl);
2352         spin_lock_init(&rocker->group_tbl_lock);
2353
2354         hash_init(rocker->fdb_tbl);
2355         spin_lock_init(&rocker->fdb_tbl_lock);
2356
2357         hash_init(rocker->internal_vlan_tbl);
2358         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2359
2360         hash_init(rocker->neigh_tbl);
2361         spin_lock_init(&rocker->neigh_tbl_lock);
2362
2363         return 0;
2364 }
2365
2366 static void rocker_free_tbls(struct rocker *rocker)
2367 {
2368         unsigned long flags;
2369         struct rocker_flow_tbl_entry *flow_entry;
2370         struct rocker_group_tbl_entry *group_entry;
2371         struct rocker_fdb_tbl_entry *fdb_entry;
2372         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2373         struct rocker_neigh_tbl_entry *neigh_entry;
2374         struct hlist_node *tmp;
2375         int bkt;
2376
2377         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2378         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2379                 hash_del(&flow_entry->entry);
2380         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2381
2382         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2383         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2384                 hash_del(&group_entry->entry);
2385         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2386
2387         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2388         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2389                 hash_del(&fdb_entry->entry);
2390         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2391
2392         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2393         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2394                            tmp, internal_vlan_entry, entry)
2395                 hash_del(&internal_vlan_entry->entry);
2396         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2397
2398         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2399         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2400                 hash_del(&neigh_entry->entry);
2401         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2402 }
2403
2404 static struct rocker_flow_tbl_entry *
2405 rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2406 {
2407         struct rocker_flow_tbl_entry *found;
2408         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2409
2410         hash_for_each_possible(rocker->flow_tbl, found,
2411                                entry, match->key_crc32) {
2412                 if (memcmp(&found->key, &match->key, key_len) == 0)
2413                         return found;
2414         }
2415
2416         return NULL;
2417 }
2418
2419 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2420                                enum switchdev_trans trans,
2421                                struct rocker_flow_tbl_entry *match)
2422 {
2423         struct rocker *rocker = rocker_port->rocker;
2424         struct rocker_flow_tbl_entry *found;
2425         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2426         unsigned long flags;
2427
2428         match->key_crc32 = crc32(~0, &match->key, key_len);
2429
2430         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2431
2432         found = rocker_flow_tbl_find(rocker, match);
2433
2434         if (found) {
2435                 match->cookie = found->cookie;
2436                 if (trans != SWITCHDEV_TRANS_PREPARE)
2437                         hash_del(&found->entry);
2438                 rocker_port_kfree(rocker_port, trans, found);
2439                 found = match;
2440                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2441         } else {
2442                 found = match;
2443                 found->cookie = rocker->flow_tbl_next_cookie++;
2444                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2445         }
2446
2447         if (trans != SWITCHDEV_TRANS_PREPARE)
2448                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2449
2450         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2451
2452         return rocker_cmd_exec(rocker, rocker_port, trans,
2453                                rocker_cmd_flow_tbl_add,
2454                                found, NULL, NULL);
2455 }
2456
2457 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2458                                enum switchdev_trans trans,
2459                                struct rocker_flow_tbl_entry *match)
2460 {
2461         struct rocker *rocker = rocker_port->rocker;
2462         struct rocker_flow_tbl_entry *found;
2463         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2464         unsigned long flags;
2465         int err = 0;
2466
2467         match->key_crc32 = crc32(~0, &match->key, key_len);
2468
2469         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2470
2471         found = rocker_flow_tbl_find(rocker, match);
2472
2473         if (found) {
2474                 if (trans != SWITCHDEV_TRANS_PREPARE)
2475                         hash_del(&found->entry);
2476                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2477         }
2478
2479         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2480
2481         rocker_port_kfree(rocker_port, trans, match);
2482
2483         if (found) {
2484                 err = rocker_cmd_exec(rocker, rocker_port, trans,
2485                                       rocker_cmd_flow_tbl_del,
2486                                       found, NULL, NULL);
2487                 rocker_port_kfree(rocker_port, trans, found);
2488         }
2489
2490         return err;
2491 }
2492
2493 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2494                               enum switchdev_trans trans, int flags,
2495                               struct rocker_flow_tbl_entry *entry)
2496 {
2497         if (flags & ROCKER_OP_FLAG_REMOVE)
2498                 return rocker_flow_tbl_del(rocker_port, trans, entry);
2499         else
2500                 return rocker_flow_tbl_add(rocker_port, trans, entry);
2501 }
2502
2503 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2504                                    enum switchdev_trans trans, int flags,
2505                                    u32 in_pport, u32 in_pport_mask,
2506                                    enum rocker_of_dpa_table_id goto_tbl)
2507 {
2508         struct rocker_flow_tbl_entry *entry;
2509
2510         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2511         if (!entry)
2512                 return -ENOMEM;
2513
2514         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2515         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2516         entry->key.ig_port.in_pport = in_pport;
2517         entry->key.ig_port.in_pport_mask = in_pport_mask;
2518         entry->key.ig_port.goto_tbl = goto_tbl;
2519
2520         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2521 }
2522
2523 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2524                                 enum switchdev_trans trans, int flags,
2525                                 u32 in_pport, __be16 vlan_id,
2526                                 __be16 vlan_id_mask,
2527                                 enum rocker_of_dpa_table_id goto_tbl,
2528                                 bool untagged, __be16 new_vlan_id)
2529 {
2530         struct rocker_flow_tbl_entry *entry;
2531
2532         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2533         if (!entry)
2534                 return -ENOMEM;
2535
2536         entry->key.priority = ROCKER_PRIORITY_VLAN;
2537         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2538         entry->key.vlan.in_pport = in_pport;
2539         entry->key.vlan.vlan_id = vlan_id;
2540         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2541         entry->key.vlan.goto_tbl = goto_tbl;
2542
2543         entry->key.vlan.untagged = untagged;
2544         entry->key.vlan.new_vlan_id = new_vlan_id;
2545
2546         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2547 }
2548
2549 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2550                                     enum switchdev_trans trans,
2551                                     u32 in_pport, u32 in_pport_mask,
2552                                     __be16 eth_type, const u8 *eth_dst,
2553                                     const u8 *eth_dst_mask, __be16 vlan_id,
2554                                     __be16 vlan_id_mask, bool copy_to_cpu,
2555                                     int flags)
2556 {
2557         struct rocker_flow_tbl_entry *entry;
2558
2559         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2560         if (!entry)
2561                 return -ENOMEM;
2562
2563         if (is_multicast_ether_addr(eth_dst)) {
2564                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2565                 entry->key.term_mac.goto_tbl =
2566                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2567         } else {
2568                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2569                 entry->key.term_mac.goto_tbl =
2570                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2571         }
2572
2573         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2574         entry->key.term_mac.in_pport = in_pport;
2575         entry->key.term_mac.in_pport_mask = in_pport_mask;
2576         entry->key.term_mac.eth_type = eth_type;
2577         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2578         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2579         entry->key.term_mac.vlan_id = vlan_id;
2580         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2581         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2582
2583         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2584 }
2585
2586 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2587                                   enum switchdev_trans trans, int flags,
2588                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2589                                   __be16 vlan_id, u32 tunnel_id,
2590                                   enum rocker_of_dpa_table_id goto_tbl,
2591                                   u32 group_id, bool copy_to_cpu)
2592 {
2593         struct rocker_flow_tbl_entry *entry;
2594         u32 priority;
2595         bool vlan_bridging = !!vlan_id;
2596         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2597         bool wild = false;
2598
2599         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2600         if (!entry)
2601                 return -ENOMEM;
2602
2603         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2604
2605         if (eth_dst) {
2606                 entry->key.bridge.has_eth_dst = 1;
2607                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2608         }
2609         if (eth_dst_mask) {
2610                 entry->key.bridge.has_eth_dst_mask = 1;
2611                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2612                 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2613                         wild = true;
2614         }
2615
2616         priority = ROCKER_PRIORITY_UNKNOWN;
2617         if (vlan_bridging && dflt && wild)
2618                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2619         else if (vlan_bridging && dflt && !wild)
2620                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2621         else if (vlan_bridging && !dflt)
2622                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2623         else if (!vlan_bridging && dflt && wild)
2624                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2625         else if (!vlan_bridging && dflt && !wild)
2626                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2627         else if (!vlan_bridging && !dflt)
2628                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2629
2630         entry->key.priority = priority;
2631         entry->key.bridge.vlan_id = vlan_id;
2632         entry->key.bridge.tunnel_id = tunnel_id;
2633         entry->key.bridge.goto_tbl = goto_tbl;
2634         entry->key.bridge.group_id = group_id;
2635         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2636
2637         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2638 }
2639
2640 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2641                                           enum switchdev_trans trans,
2642                                           __be16 eth_type, __be32 dst,
2643                                           __be32 dst_mask, u32 priority,
2644                                           enum rocker_of_dpa_table_id goto_tbl,
2645                                           u32 group_id, int flags)
2646 {
2647         struct rocker_flow_tbl_entry *entry;
2648
2649         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2650         if (!entry)
2651                 return -ENOMEM;
2652
2653         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2654         entry->key.priority = priority;
2655         entry->key.ucast_routing.eth_type = eth_type;
2656         entry->key.ucast_routing.dst4 = dst;
2657         entry->key.ucast_routing.dst4_mask = dst_mask;
2658         entry->key.ucast_routing.goto_tbl = goto_tbl;
2659         entry->key.ucast_routing.group_id = group_id;
2660         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2661                                   ucast_routing.group_id);
2662
2663         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2664 }
2665
2666 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2667                                enum switchdev_trans trans, int flags,
2668                                u32 in_pport, u32 in_pport_mask,
2669                                const u8 *eth_src, const u8 *eth_src_mask,
2670                                const u8 *eth_dst, const u8 *eth_dst_mask,
2671                                __be16 eth_type, __be16 vlan_id,
2672                                __be16 vlan_id_mask, u8 ip_proto,
2673                                u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2674                                u32 group_id)
2675 {
2676         u32 priority;
2677         struct rocker_flow_tbl_entry *entry;
2678
2679         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2680         if (!entry)
2681                 return -ENOMEM;
2682
2683         priority = ROCKER_PRIORITY_ACL_NORMAL;
2684         if (eth_dst && eth_dst_mask) {
2685                 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2686                         priority = ROCKER_PRIORITY_ACL_DFLT;
2687                 else if (is_link_local_ether_addr(eth_dst))
2688                         priority = ROCKER_PRIORITY_ACL_CTRL;
2689         }
2690
2691         entry->key.priority = priority;
2692         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2693         entry->key.acl.in_pport = in_pport;
2694         entry->key.acl.in_pport_mask = in_pport_mask;
2695
2696         if (eth_src)
2697                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2698         if (eth_src_mask)
2699                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2700         if (eth_dst)
2701                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2702         if (eth_dst_mask)
2703                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2704
2705         entry->key.acl.eth_type = eth_type;
2706         entry->key.acl.vlan_id = vlan_id;
2707         entry->key.acl.vlan_id_mask = vlan_id_mask;
2708         entry->key.acl.ip_proto = ip_proto;
2709         entry->key.acl.ip_proto_mask = ip_proto_mask;
2710         entry->key.acl.ip_tos = ip_tos;
2711         entry->key.acl.ip_tos_mask = ip_tos_mask;
2712         entry->key.acl.group_id = group_id;
2713
2714         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2715 }
2716
2717 static struct rocker_group_tbl_entry *
2718 rocker_group_tbl_find(struct rocker *rocker,
2719                       struct rocker_group_tbl_entry *match)
2720 {
2721         struct rocker_group_tbl_entry *found;
2722
2723         hash_for_each_possible(rocker->group_tbl, found,
2724                                entry, match->group_id) {
2725                 if (found->group_id == match->group_id)
2726                         return found;
2727         }
2728
2729         return NULL;
2730 }
2731
2732 static void rocker_group_tbl_entry_free(struct rocker_port *rocker_port,
2733                                         enum switchdev_trans trans,
2734                                         struct rocker_group_tbl_entry *entry)
2735 {
2736         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2737         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2738         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2739                 rocker_port_kfree(rocker_port, trans, entry->group_ids);
2740                 break;
2741         default:
2742                 break;
2743         }
2744         rocker_port_kfree(rocker_port, trans, entry);
2745 }
2746
2747 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2748                                 enum switchdev_trans trans,
2749                                 struct rocker_group_tbl_entry *match)
2750 {
2751         struct rocker *rocker = rocker_port->rocker;
2752         struct rocker_group_tbl_entry *found;
2753         unsigned long flags;
2754
2755         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2756
2757         found = rocker_group_tbl_find(rocker, match);
2758
2759         if (found) {
2760                 if (trans != SWITCHDEV_TRANS_PREPARE)
2761                         hash_del(&found->entry);
2762                 rocker_group_tbl_entry_free(rocker_port, trans, found);
2763                 found = match;
2764                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2765         } else {
2766                 found = match;
2767                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2768         }
2769
2770         if (trans != SWITCHDEV_TRANS_PREPARE)
2771                 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2772
2773         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2774
2775         return rocker_cmd_exec(rocker, rocker_port, trans,
2776                                rocker_cmd_group_tbl_add,
2777                                found, NULL, NULL);
2778 }
2779
2780 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2781                                 enum switchdev_trans trans,
2782                                 struct rocker_group_tbl_entry *match)
2783 {
2784         struct rocker *rocker = rocker_port->rocker;
2785         struct rocker_group_tbl_entry *found;
2786         unsigned long flags;
2787         int err = 0;
2788
2789         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2790
2791         found = rocker_group_tbl_find(rocker, match);
2792
2793         if (found) {
2794                 if (trans != SWITCHDEV_TRANS_PREPARE)
2795                         hash_del(&found->entry);
2796                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2797         }
2798
2799         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2800
2801         rocker_group_tbl_entry_free(rocker_port, trans, match);
2802
2803         if (found) {
2804                 err = rocker_cmd_exec(rocker, rocker_port, trans,
2805                                       rocker_cmd_group_tbl_del,
2806                                       found, NULL, NULL);
2807                 rocker_group_tbl_entry_free(rocker_port, trans, found);
2808         }
2809
2810         return err;
2811 }
2812
2813 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2814                                enum switchdev_trans trans, int flags,
2815                                struct rocker_group_tbl_entry *entry)
2816 {
2817         if (flags & ROCKER_OP_FLAG_REMOVE)
2818                 return rocker_group_tbl_del(rocker_port, trans, entry);
2819         else
2820                 return rocker_group_tbl_add(rocker_port, trans, entry);
2821 }
2822
2823 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2824                                      enum switchdev_trans trans, int flags,
2825                                      __be16 vlan_id, u32 out_pport,
2826                                      int pop_vlan)
2827 {
2828         struct rocker_group_tbl_entry *entry;
2829
2830         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2831         if (!entry)
2832                 return -ENOMEM;
2833
2834         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2835         entry->l2_interface.pop_vlan = pop_vlan;
2836
2837         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2838 }
2839
2840 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2841                                    enum switchdev_trans trans,
2842                                    int flags, u8 group_count,
2843                                    u32 *group_ids, u32 group_id)
2844 {
2845         struct rocker_group_tbl_entry *entry;
2846
2847         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2848         if (!entry)
2849                 return -ENOMEM;
2850
2851         entry->group_id = group_id;
2852         entry->group_count = group_count;
2853
2854         entry->group_ids = rocker_port_kcalloc(rocker_port, trans, group_count,
2855                                                sizeof(u32));
2856         if (!entry->group_ids) {
2857                 rocker_port_kfree(rocker_port, trans, entry);
2858                 return -ENOMEM;
2859         }
2860         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2861
2862         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2863 }
2864
2865 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2866                                  enum switchdev_trans trans, int flags,
2867                                  __be16 vlan_id, u8 group_count,
2868                                  u32 *group_ids, u32 group_id)
2869 {
2870         return rocker_group_l2_fan_out(rocker_port, trans, flags,
2871                                        group_count, group_ids,
2872                                        group_id);
2873 }
2874
2875 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2876                                    enum switchdev_trans trans, int flags,
2877                                    u32 index, u8 *src_mac, u8 *dst_mac,
2878                                    __be16 vlan_id, bool ttl_check, u32 pport)
2879 {
2880         struct rocker_group_tbl_entry *entry;
2881
2882         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2883         if (!entry)
2884                 return -ENOMEM;
2885
2886         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2887         if (src_mac)
2888                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2889         if (dst_mac)
2890                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2891         entry->l3_unicast.vlan_id = vlan_id;
2892         entry->l3_unicast.ttl_check = ttl_check;
2893         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2894
2895         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2896 }
2897
2898 static struct rocker_neigh_tbl_entry *
2899         rocker_neigh_tbl_find(struct rocker *rocker, __be32 ip_addr)
2900 {
2901         struct rocker_neigh_tbl_entry *found;
2902
2903         hash_for_each_possible(rocker->neigh_tbl, found,
2904                                entry, be32_to_cpu(ip_addr))
2905                 if (found->ip_addr == ip_addr)
2906                         return found;
2907
2908         return NULL;
2909 }
2910
2911 static void _rocker_neigh_add(struct rocker *rocker,
2912                               enum switchdev_trans trans,
2913                               struct rocker_neigh_tbl_entry *entry)
2914 {
2915         entry->index = rocker->neigh_tbl_next_index;
2916         if (trans == SWITCHDEV_TRANS_PREPARE)
2917                 return;
2918         rocker->neigh_tbl_next_index++;
2919         entry->ref_count++;
2920         hash_add(rocker->neigh_tbl, &entry->entry,
2921                  be32_to_cpu(entry->ip_addr));
2922 }
2923
2924 static void _rocker_neigh_del(struct rocker_port *rocker_port,
2925                               enum switchdev_trans trans,
2926                               struct rocker_neigh_tbl_entry *entry)
2927 {
2928         if (trans == SWITCHDEV_TRANS_PREPARE)
2929                 return;
2930         if (--entry->ref_count == 0) {
2931                 hash_del(&entry->entry);
2932                 rocker_port_kfree(rocker_port, trans, entry);
2933         }
2934 }
2935
2936 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
2937                                  enum switchdev_trans trans,
2938                                  u8 *eth_dst, bool ttl_check)
2939 {
2940         if (eth_dst) {
2941                 ether_addr_copy(entry->eth_dst, eth_dst);
2942                 entry->ttl_check = ttl_check;
2943         } else if (trans != SWITCHDEV_TRANS_PREPARE) {
2944                 entry->ref_count++;
2945         }
2946 }
2947
2948 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2949                                   enum switchdev_trans trans,
2950                                   int flags, __be32 ip_addr, u8 *eth_dst)
2951 {
2952         struct rocker *rocker = rocker_port->rocker;
2953         struct rocker_neigh_tbl_entry *entry;
2954         struct rocker_neigh_tbl_entry *found;
2955         unsigned long lock_flags;
2956         __be16 eth_type = htons(ETH_P_IP);
2957         enum rocker_of_dpa_table_id goto_tbl =
2958                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2959         u32 group_id;
2960         u32 priority = 0;
2961         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2962         bool updating;
2963         bool removing;
2964         int err = 0;
2965
2966         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2967         if (!entry)
2968                 return -ENOMEM;
2969
2970         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2971
2972         found = rocker_neigh_tbl_find(rocker, ip_addr);
2973
2974         updating = found && adding;
2975         removing = found && !adding;
2976         adding = !found && adding;
2977
2978         if (adding) {
2979                 entry->ip_addr = ip_addr;
2980                 entry->dev = rocker_port->dev;
2981                 ether_addr_copy(entry->eth_dst, eth_dst);
2982                 entry->ttl_check = true;
2983                 _rocker_neigh_add(rocker, trans, entry);
2984         } else if (removing) {
2985                 memcpy(entry, found, sizeof(*entry));
2986                 _rocker_neigh_del(rocker_port, trans, found);
2987         } else if (updating) {
2988                 _rocker_neigh_update(found, trans, eth_dst, true);
2989                 memcpy(entry, found, sizeof(*entry));
2990         } else {
2991                 err = -ENOENT;
2992         }
2993
2994         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2995
2996         if (err)
2997                 goto err_out;
2998
2999         /* For each active neighbor, we have an L3 unicast group and
3000          * a /32 route to the neighbor, which uses the L3 unicast
3001          * group.  The L3 unicast group can also be referred to by
3002          * other routes' nexthops.
3003          */
3004
3005         err = rocker_group_l3_unicast(rocker_port, trans, flags,
3006                                       entry->index,
3007                                       rocker_port->dev->dev_addr,
3008                                       entry->eth_dst,
3009                                       rocker_port->internal_vlan_id,
3010                                       entry->ttl_check,
3011                                       rocker_port->pport);
3012         if (err) {
3013                 netdev_err(rocker_port->dev,
3014                            "Error (%d) L3 unicast group index %d\n",
3015                            err, entry->index);
3016                 goto err_out;
3017         }
3018
3019         if (adding || removing) {
3020                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3021                 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3022                                                      eth_type, ip_addr,
3023                                                      inet_make_mask(32),
3024                                                      priority, goto_tbl,
3025                                                      group_id, flags);
3026
3027                 if (err)
3028                         netdev_err(rocker_port->dev,
3029                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3030                                    err, &entry->ip_addr, group_id);
3031         }
3032
3033 err_out:
3034         if (!adding)
3035                 rocker_port_kfree(rocker_port, trans, entry);
3036
3037         return err;
3038 }
3039
3040 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3041                                     enum switchdev_trans trans, __be32 ip_addr)
3042 {
3043         struct net_device *dev = rocker_port->dev;
3044         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3045         int err = 0;
3046
3047         if (!n) {
3048                 n = neigh_create(&arp_tbl, &ip_addr, dev);
3049                 if (IS_ERR(n))
3050                         return IS_ERR(n);
3051         }
3052
3053         /* If the neigh is already resolved, then go ahead and
3054          * install the entry, otherwise start the ARP process to
3055          * resolve the neigh.
3056          */
3057
3058         if (n->nud_state & NUD_VALID)
3059                 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3060                                              ip_addr, n->ha);
3061         else
3062                 neigh_event_send(n, NULL);
3063
3064         neigh_release(n);
3065         return err;
3066 }
3067
3068 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3069                                enum switchdev_trans trans, int flags,
3070                                __be32 ip_addr, u32 *index)
3071 {
3072         struct rocker *rocker = rocker_port->rocker;
3073         struct rocker_neigh_tbl_entry *entry;
3074         struct rocker_neigh_tbl_entry *found;
3075         unsigned long lock_flags;
3076         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3077         bool updating;
3078         bool removing;
3079         bool resolved = true;
3080         int err = 0;
3081
3082         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
3083         if (!entry)
3084                 return -ENOMEM;
3085
3086         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3087
3088         found = rocker_neigh_tbl_find(rocker, ip_addr);
3089         if (found)
3090                 *index = found->index;
3091
3092         updating = found && adding;
3093         removing = found && !adding;
3094         adding = !found && adding;
3095
3096         if (adding) {
3097                 entry->ip_addr = ip_addr;
3098                 entry->dev = rocker_port->dev;
3099                 _rocker_neigh_add(rocker, trans, entry);
3100                 *index = entry->index;
3101                 resolved = false;
3102         } else if (removing) {
3103                 _rocker_neigh_del(rocker_port, trans, found);
3104         } else if (updating) {
3105                 _rocker_neigh_update(found, trans, NULL, false);
3106                 resolved = !is_zero_ether_addr(found->eth_dst);
3107         } else {
3108                 err = -ENOENT;
3109         }
3110
3111         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3112
3113         if (!adding)
3114                 rocker_port_kfree(rocker_port, trans, entry);
3115
3116         if (err)
3117                 return err;
3118
3119         /* Resolved means neigh ip_addr is resolved to neigh mac. */
3120
3121         if (!resolved)
3122                 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3123
3124         return err;
3125 }
3126
3127 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3128                                         enum switchdev_trans trans,
3129                                         int flags, __be16 vlan_id)
3130 {
3131         struct rocker_port *p;
3132         struct rocker *rocker = rocker_port->rocker;
3133         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3134         u32 *group_ids;
3135         u8 group_count = 0;
3136         int err = 0;
3137         int i;
3138
3139         group_ids = rocker_port_kcalloc(rocker_port, trans, rocker->port_count,
3140                                         sizeof(u32));
3141         if (!group_ids)
3142                 return -ENOMEM;
3143
3144         /* Adjust the flood group for this VLAN.  The flood group
3145          * references an L2 interface group for each port in this
3146          * VLAN.
3147          */
3148
3149         for (i = 0; i < rocker->port_count; i++) {
3150                 p = rocker->ports[i];
3151                 if (!rocker_port_is_bridged(p))
3152                         continue;
3153                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3154                         group_ids[group_count++] =
3155                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3156                 }
3157         }
3158
3159         /* If there are no bridged ports in this VLAN, we're done */
3160         if (group_count == 0)
3161                 goto no_ports_in_vlan;
3162
3163         err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3164                                     group_count, group_ids, group_id);
3165         if (err)
3166                 netdev_err(rocker_port->dev,
3167                            "Error (%d) port VLAN l2 flood group\n", err);
3168
3169 no_ports_in_vlan:
3170         rocker_port_kfree(rocker_port, trans, group_ids);
3171         return err;
3172 }
3173
3174 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3175                                       enum switchdev_trans trans, int flags,
3176                                       __be16 vlan_id, bool pop_vlan)
3177 {
3178         struct rocker *rocker = rocker_port->rocker;
3179         struct rocker_port *p;
3180         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3181         u32 out_pport;
3182         int ref = 0;
3183         int err;
3184         int i;
3185
3186         /* An L2 interface group for this port in this VLAN, but
3187          * only when port STP state is LEARNING|FORWARDING.
3188          */
3189
3190         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3191             rocker_port->stp_state == BR_STATE_FORWARDING) {
3192                 out_pport = rocker_port->pport;
3193                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3194                                                 vlan_id, out_pport, pop_vlan);
3195                 if (err) {
3196                         netdev_err(rocker_port->dev,
3197                                    "Error (%d) port VLAN l2 group for pport %d\n",
3198                                    err, out_pport);
3199                         return err;
3200                 }
3201         }
3202
3203         /* An L2 interface group for this VLAN to CPU port.
3204          * Add when first port joins this VLAN and destroy when
3205          * last port leaves this VLAN.
3206          */
3207
3208         for (i = 0; i < rocker->port_count; i++) {
3209                 p = rocker->ports[i];
3210                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
3211                         ref++;
3212         }
3213
3214         if ((!adding || ref != 1) && (adding || ref != 0))
3215                 return 0;
3216
3217         out_pport = 0;
3218         err = rocker_group_l2_interface(rocker_port, trans, flags,
3219                                         vlan_id, out_pport, pop_vlan);
3220         if (err) {
3221                 netdev_err(rocker_port->dev,
3222                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3223                 return err;
3224         }
3225
3226         return 0;
3227 }
3228
3229 static struct rocker_ctrl {
3230         const u8 *eth_dst;
3231         const u8 *eth_dst_mask;
3232         __be16 eth_type;
3233         bool acl;
3234         bool bridge;
3235         bool term;
3236         bool copy_to_cpu;
3237 } rocker_ctrls[] = {
3238         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3239                 /* pass link local multicast pkts up to CPU for filtering */
3240                 .eth_dst = ll_mac,
3241                 .eth_dst_mask = ll_mask,
3242                 .acl = true,
3243         },
3244         [ROCKER_CTRL_LOCAL_ARP] = {
3245                 /* pass local ARP pkts up to CPU */
3246                 .eth_dst = zero_mac,
3247                 .eth_dst_mask = zero_mac,
3248                 .eth_type = htons(ETH_P_ARP),
3249                 .acl = true,
3250         },
3251         [ROCKER_CTRL_IPV4_MCAST] = {
3252                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3253                 .eth_dst = ipv4_mcast,
3254                 .eth_dst_mask = ipv4_mask,
3255                 .eth_type = htons(ETH_P_IP),
3256                 .term  = true,
3257                 .copy_to_cpu = true,
3258         },
3259         [ROCKER_CTRL_IPV6_MCAST] = {
3260                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3261                 .eth_dst = ipv6_mcast,
3262                 .eth_dst_mask = ipv6_mask,
3263                 .eth_type = htons(ETH_P_IPV6),
3264                 .term  = true,
3265                 .copy_to_cpu = true,
3266         },
3267         [ROCKER_CTRL_DFLT_BRIDGING] = {
3268                 /* flood any pkts on vlan */
3269                 .bridge = true,
3270                 .copy_to_cpu = true,
3271         },
3272 };
3273
3274 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3275                                      enum switchdev_trans trans, int flags,
3276                                      struct rocker_ctrl *ctrl, __be16 vlan_id)
3277 {
3278         u32 in_pport = rocker_port->pport;
3279         u32 in_pport_mask = 0xffffffff;
3280         u32 out_pport = 0;
3281         u8 *eth_src = NULL;
3282         u8 *eth_src_mask = NULL;
3283         __be16 vlan_id_mask = htons(0xffff);
3284         u8 ip_proto = 0;
3285         u8 ip_proto_mask = 0;
3286         u8 ip_tos = 0;
3287         u8 ip_tos_mask = 0;
3288         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3289         int err;
3290
3291         err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3292                                   in_pport, in_pport_mask,
3293                                   eth_src, eth_src_mask,
3294                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3295                                   ctrl->eth_type,
3296                                   vlan_id, vlan_id_mask,
3297                                   ip_proto, ip_proto_mask,
3298                                   ip_tos, ip_tos_mask,
3299                                   group_id);
3300
3301         if (err)
3302                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3303
3304         return err;
3305 }
3306
3307 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3308                                         enum switchdev_trans trans, int flags,
3309                                         struct rocker_ctrl *ctrl,
3310                                         __be16 vlan_id)
3311 {
3312         enum rocker_of_dpa_table_id goto_tbl =
3313                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3314         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3315         u32 tunnel_id = 0;
3316         int err;
3317
3318         if (!rocker_port_is_bridged(rocker_port))
3319                 return 0;
3320
3321         err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3322                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3323                                      vlan_id, tunnel_id,
3324                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3325
3326         if (err)
3327                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3328
3329         return err;
3330 }
3331
3332 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3333                                       enum switchdev_trans trans, int flags,
3334                                       struct rocker_ctrl *ctrl, __be16 vlan_id)
3335 {
3336         u32 in_pport_mask = 0xffffffff;
3337         __be16 vlan_id_mask = htons(0xffff);
3338         int err;
3339
3340         if (ntohs(vlan_id) == 0)
3341                 vlan_id = rocker_port->internal_vlan_id;
3342
3343         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3344                                        rocker_port->pport, in_pport_mask,
3345                                        ctrl->eth_type, ctrl->eth_dst,
3346                                        ctrl->eth_dst_mask, vlan_id,
3347                                        vlan_id_mask, ctrl->copy_to_cpu,
3348                                        flags);
3349
3350         if (err)
3351                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3352
3353         return err;
3354 }
3355
3356 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3357                                  enum switchdev_trans trans, int flags,
3358                                  struct rocker_ctrl *ctrl, __be16 vlan_id)
3359 {
3360         if (ctrl->acl)
3361                 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3362                                                  ctrl, vlan_id);
3363         if (ctrl->bridge)
3364                 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3365                                                     ctrl, vlan_id);
3366
3367         if (ctrl->term)
3368                 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3369                                                   ctrl, vlan_id);
3370
3371         return -EOPNOTSUPP;
3372 }
3373
3374 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3375                                      enum switchdev_trans trans, int flags,
3376                                      __be16 vlan_id)
3377 {
3378         int err = 0;
3379         int i;
3380
3381         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3382                 if (rocker_port->ctrls[i]) {
3383                         err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3384                                                     &rocker_ctrls[i], vlan_id);
3385                         if (err)
3386                                 return err;
3387                 }
3388         }
3389
3390         return err;
3391 }
3392
3393 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3394                             enum switchdev_trans trans, int flags,
3395                             struct rocker_ctrl *ctrl)
3396 {
3397         u16 vid;
3398         int err = 0;
3399
3400         for (vid = 1; vid < VLAN_N_VID; vid++) {
3401                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3402                         continue;
3403                 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3404                                             ctrl, htons(vid));
3405                 if (err)
3406                         break;
3407         }
3408
3409         return err;
3410 }
3411
3412 static int rocker_port_vlan(struct rocker_port *rocker_port,
3413                             enum switchdev_trans trans, int flags, u16 vid)
3414 {
3415         enum rocker_of_dpa_table_id goto_tbl =
3416                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3417         u32 in_pport = rocker_port->pport;
3418         __be16 vlan_id = htons(vid);
3419         __be16 vlan_id_mask = htons(0xffff);
3420         __be16 internal_vlan_id;
3421         bool untagged;
3422         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3423         int err;
3424
3425         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3426
3427         if (adding && test_bit(ntohs(internal_vlan_id),
3428                                rocker_port->vlan_bitmap))
3429                         return 0; /* already added */
3430         else if (!adding && !test_bit(ntohs(internal_vlan_id),
3431                                       rocker_port->vlan_bitmap))
3432                         return 0; /* already removed */
3433
3434         change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3435
3436         if (adding) {
3437                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3438                                                 internal_vlan_id);
3439                 if (err) {
3440                         netdev_err(rocker_port->dev,
3441                                    "Error (%d) port ctrl vlan add\n", err);
3442                         goto err_out;
3443                 }
3444         }
3445
3446         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3447                                          internal_vlan_id, untagged);
3448         if (err) {
3449                 netdev_err(rocker_port->dev,
3450                            "Error (%d) port VLAN l2 groups\n", err);
3451                 goto err_out;
3452         }
3453
3454         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3455                                            internal_vlan_id);
3456         if (err) {
3457                 netdev_err(rocker_port->dev,
3458                            "Error (%d) port VLAN l2 flood group\n", err);
3459                 goto err_out;
3460         }
3461
3462         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3463                                    in_pport, vlan_id, vlan_id_mask,
3464                                    goto_tbl, untagged, internal_vlan_id);
3465         if (err)
3466                 netdev_err(rocker_port->dev,
3467                            "Error (%d) port VLAN table\n", err);
3468
3469 err_out:
3470         if (trans == SWITCHDEV_TRANS_PREPARE)
3471                 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3472
3473         return err;
3474 }
3475
3476 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3477                               enum switchdev_trans trans, int flags)
3478 {
3479         enum rocker_of_dpa_table_id goto_tbl;
3480         u32 in_pport;
3481         u32 in_pport_mask;
3482         int err;
3483
3484         /* Normal Ethernet Frames.  Matches pkts from any local physical
3485          * ports.  Goto VLAN tbl.
3486          */
3487
3488         in_pport = 0;
3489         in_pport_mask = 0xffff0000;
3490         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3491
3492         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3493                                       in_pport, in_pport_mask,
3494                                       goto_tbl);
3495         if (err)
3496                 netdev_err(rocker_port->dev,
3497                            "Error (%d) ingress port table entry\n", err);
3498
3499         return err;
3500 }
3501
3502 struct rocker_fdb_learn_work {
3503         struct work_struct work;
3504         struct rocker_port *rocker_port;
3505         enum switchdev_trans trans;
3506         int flags;
3507         u8 addr[ETH_ALEN];
3508         u16 vid;
3509 };
3510
3511 static void rocker_port_fdb_learn_work(struct work_struct *work)
3512 {
3513         struct rocker_fdb_learn_work *lw =
3514                 container_of(work, struct rocker_fdb_learn_work, work);
3515         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3516         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3517         struct switchdev_notifier_fdb_info info;
3518
3519         info.addr = lw->addr;
3520         info.vid = lw->vid;
3521
3522         if (learned && removing)
3523                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3524                                          lw->rocker_port->dev, &info.info);
3525         else if (learned && !removing)
3526                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3527                                          lw->rocker_port->dev, &info.info);
3528
3529         rocker_port_kfree(lw->rocker_port, lw->trans, work);
3530 }
3531
3532 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3533                                  enum switchdev_trans trans, int flags,
3534                                  const u8 *addr, __be16 vlan_id)
3535 {
3536         struct rocker_fdb_learn_work *lw;
3537         enum rocker_of_dpa_table_id goto_tbl =
3538                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3539         u32 out_pport = rocker_port->pport;
3540         u32 tunnel_id = 0;
3541         u32 group_id = ROCKER_GROUP_NONE;
3542         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3543         bool copy_to_cpu = false;
3544         int err;
3545
3546         if (rocker_port_is_bridged(rocker_port))
3547                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3548
3549         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3550                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3551                                              NULL, vlan_id, tunnel_id, goto_tbl,
3552                                              group_id, copy_to_cpu);
3553                 if (err)
3554                         return err;
3555         }
3556
3557         if (!syncing)
3558                 return 0;
3559
3560         if (!rocker_port_is_bridged(rocker_port))
3561                 return 0;
3562
3563         lw = rocker_port_kzalloc(rocker_port, trans, sizeof(*lw));
3564         if (!lw)
3565                 return -ENOMEM;
3566
3567         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3568
3569         lw->rocker_port = rocker_port;
3570         lw->trans = trans;
3571         lw->flags = flags;
3572         ether_addr_copy(lw->addr, addr);
3573         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3574
3575         if (trans == SWITCHDEV_TRANS_PREPARE)
3576                 rocker_port_kfree(rocker_port, trans, lw);
3577         else
3578                 schedule_work(&lw->work);
3579
3580         return 0;
3581 }
3582
3583 static struct rocker_fdb_tbl_entry *
3584 rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3585 {
3586         struct rocker_fdb_tbl_entry *found;
3587
3588         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3589                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3590                         return found;
3591
3592         return NULL;
3593 }
3594
3595 static int rocker_port_fdb(struct rocker_port *rocker_port,
3596                            enum switchdev_trans trans,
3597                            const unsigned char *addr,
3598                            __be16 vlan_id, int flags)
3599 {
3600         struct rocker *rocker = rocker_port->rocker;
3601         struct rocker_fdb_tbl_entry *fdb;
3602         struct rocker_fdb_tbl_entry *found;
3603         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3604         unsigned long lock_flags;
3605
3606         fdb = rocker_port_kzalloc(rocker_port, trans, sizeof(*fdb));
3607         if (!fdb)
3608                 return -ENOMEM;
3609
3610         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3611         fdb->key.pport = rocker_port->pport;
3612         ether_addr_copy(fdb->key.addr, addr);
3613         fdb->key.vlan_id = vlan_id;
3614         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3615
3616         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3617
3618         found = rocker_fdb_tbl_find(rocker, fdb);
3619
3620         if (removing && found) {
3621                 rocker_port_kfree(rocker_port, trans, fdb);
3622                 if (trans != SWITCHDEV_TRANS_PREPARE)
3623                         hash_del(&found->entry);
3624         } else if (!removing && !found) {
3625                 if (trans != SWITCHDEV_TRANS_PREPARE)
3626                         hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3627         }
3628
3629         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3630
3631         /* Check if adding and already exists, or removing and can't find */
3632         if (!found != !removing) {
3633                 rocker_port_kfree(rocker_port, trans, fdb);
3634                 if (!found && removing)
3635                         return 0;
3636                 /* Refreshing existing to update aging timers */
3637                 flags |= ROCKER_OP_FLAG_REFRESH;
3638         }
3639
3640         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3641 }
3642
3643 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3644                                  enum switchdev_trans trans)
3645 {
3646         struct rocker *rocker = rocker_port->rocker;
3647         struct rocker_fdb_tbl_entry *found;
3648         unsigned long lock_flags;
3649         int flags = ROCKER_OP_FLAG_REMOVE;
3650         struct hlist_node *tmp;
3651         int bkt;
3652         int err = 0;
3653
3654         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3655             rocker_port->stp_state == BR_STATE_FORWARDING)
3656                 return 0;
3657
3658         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3659
3660         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3661                 if (found->key.pport != rocker_port->pport)
3662                         continue;
3663                 if (!found->learned)
3664                         continue;
3665                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3666                                             found->key.addr,
3667                                             found->key.vlan_id);
3668                 if (err)
3669                         goto err_out;
3670                 if (trans != SWITCHDEV_TRANS_PREPARE)
3671                         hash_del(&found->entry);
3672         }
3673
3674 err_out:
3675         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3676
3677         return err;
3678 }
3679
3680 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3681                                   enum switchdev_trans trans, int flags,
3682                                   __be16 vlan_id)
3683 {
3684         u32 in_pport_mask = 0xffffffff;
3685         __be16 eth_type;
3686         const u8 *dst_mac_mask = ff_mac;
3687         __be16 vlan_id_mask = htons(0xffff);
3688         bool copy_to_cpu = false;
3689         int err;
3690
3691         if (ntohs(vlan_id) == 0)
3692                 vlan_id = rocker_port->internal_vlan_id;
3693
3694         eth_type = htons(ETH_P_IP);
3695         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3696                                        rocker_port->pport, in_pport_mask,
3697                                        eth_type, rocker_port->dev->dev_addr,
3698                                        dst_mac_mask, vlan_id, vlan_id_mask,
3699                                        copy_to_cpu, flags);
3700         if (err)
3701                 return err;
3702
3703         eth_type = htons(ETH_P_IPV6);
3704         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3705                                        rocker_port->pport, in_pport_mask,
3706                                        eth_type, rocker_port->dev->dev_addr,
3707                                        dst_mac_mask, vlan_id, vlan_id_mask,
3708                                        copy_to_cpu, flags);
3709
3710         return err;
3711 }
3712
3713 static int rocker_port_fwding(struct rocker_port *rocker_port,
3714                               enum switchdev_trans trans)
3715 {
3716         bool pop_vlan;
3717         u32 out_pport;
3718         __be16 vlan_id;
3719         u16 vid;
3720         int flags = 0;
3721         int err;
3722
3723         /* Port will be forwarding-enabled if its STP state is LEARNING
3724          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3725          * port STP state.  Use L2 interface group on port VLANs as a way
3726          * to toggle port forwarding: if forwarding is disabled, L2
3727          * interface group will not exist.
3728          */
3729
3730         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3731             rocker_port->stp_state != BR_STATE_FORWARDING)
3732                 flags |= ROCKER_OP_FLAG_REMOVE;
3733
3734         out_pport = rocker_port->pport;
3735         for (vid = 1; vid < VLAN_N_VID; vid++) {
3736                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3737                         continue;
3738                 vlan_id = htons(vid);
3739                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3740                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3741                                                 vlan_id, out_pport, pop_vlan);
3742                 if (err) {
3743                         netdev_err(rocker_port->dev,
3744                                    "Error (%d) port VLAN l2 group for pport %d\n",
3745                                    err, out_pport);
3746                         return err;
3747                 }
3748         }
3749
3750         return 0;
3751 }
3752
3753 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3754                                   enum switchdev_trans trans, u8 state)
3755 {
3756         bool want[ROCKER_CTRL_MAX] = { 0, };
3757         bool prev_ctrls[ROCKER_CTRL_MAX];
3758         u8 prev_state;
3759         int flags;
3760         int err;
3761         int i;
3762
3763         if (trans == SWITCHDEV_TRANS_PREPARE) {
3764                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3765                 prev_state = rocker_port->stp_state;
3766         }
3767
3768         if (rocker_port->stp_state == state)
3769                 return 0;
3770
3771         rocker_port->stp_state = state;
3772
3773         switch (state) {
3774         case BR_STATE_DISABLED:
3775                 /* port is completely disabled */
3776                 break;
3777         case BR_STATE_LISTENING:
3778         case BR_STATE_BLOCKING:
3779                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3780                 break;
3781         case BR_STATE_LEARNING:
3782         case BR_STATE_FORWARDING:
3783                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3784                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3785                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3786                 if (rocker_port_is_bridged(rocker_port))
3787                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3788                 else
3789                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3790                 break;
3791         }
3792
3793         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3794                 if (want[i] != rocker_port->ctrls[i]) {
3795                         flags = (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3796                         err = rocker_port_ctrl(rocker_port, trans, flags,
3797                                                &rocker_ctrls[i]);
3798                         if (err)
3799                                 goto err_out;
3800                         rocker_port->ctrls[i] = want[i];
3801                 }
3802         }
3803
3804         err = rocker_port_fdb_flush(rocker_port, trans);
3805         if (err)
3806                 goto err_out;
3807
3808         err = rocker_port_fwding(rocker_port, trans);
3809
3810 err_out:
3811         if (trans == SWITCHDEV_TRANS_PREPARE) {
3812                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3813                 rocker_port->stp_state = prev_state;
3814         }
3815
3816         return err;
3817 }
3818
3819 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3820                                   enum switchdev_trans trans)
3821 {
3822         if (rocker_port_is_bridged(rocker_port))
3823                 /* bridge STP will enable port */
3824                 return 0;
3825
3826         /* port is not bridged, so simulate going to FORWARDING state */
3827         return rocker_port_stp_update(rocker_port, trans, BR_STATE_FORWARDING);
3828 }
3829
3830 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3831                                    enum switchdev_trans trans)
3832 {
3833         if (rocker_port_is_bridged(rocker_port))
3834                 /* bridge STP will disable port */
3835                 return 0;
3836
3837         /* port is not bridged, so simulate going to DISABLED state */
3838         return rocker_port_stp_update(rocker_port, trans, BR_STATE_DISABLED);
3839 }
3840
3841 static struct rocker_internal_vlan_tbl_entry *
3842 rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3843 {
3844         struct rocker_internal_vlan_tbl_entry *found;
3845
3846         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3847                                entry, ifindex) {
3848                 if (found->ifindex == ifindex)
3849                         return found;
3850         }
3851
3852         return NULL;
3853 }
3854
3855 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3856                                                enum switchdev_trans trans,
3857                                                int ifindex)
3858 {
3859         struct rocker *rocker = rocker_port->rocker;
3860         struct rocker_internal_vlan_tbl_entry *entry;
3861         struct rocker_internal_vlan_tbl_entry *found;
3862         unsigned long lock_flags;
3863         int i;
3864
3865         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
3866         if (!entry)
3867                 return 0;
3868
3869         entry->ifindex = ifindex;
3870
3871         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3872
3873         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3874         if (found) {
3875                 rocker_port_kfree(rocker_port, trans, entry);
3876                 goto found;
3877         }
3878
3879         found = entry;
3880         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3881
3882         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3883                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3884                         continue;
3885                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3886                 goto found;
3887         }
3888
3889         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3890
3891 found:
3892         found->ref_count++;
3893         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3894
3895         return found->vlan_id;
3896 }
3897
3898 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3899                                              enum switchdev_trans trans,
3900                                              int ifindex)
3901 {
3902         struct rocker *rocker = rocker_port->rocker;
3903         struct rocker_internal_vlan_tbl_entry *found;
3904         unsigned long lock_flags;
3905         unsigned long bit;
3906
3907         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3908
3909         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3910         if (!found) {
3911                 netdev_err(rocker_port->dev,
3912                            "ifindex (%d) not found in internal VLAN tbl\n",
3913                            ifindex);
3914                 goto not_found;
3915         }
3916
3917         if (--found->ref_count <= 0) {
3918                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3919                 clear_bit(bit, rocker->internal_vlan_bitmap);
3920                 hash_del(&found->entry);
3921                 rocker_port_kfree(rocker_port, trans, found);
3922         }
3923
3924 not_found:
3925         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3926 }
3927
3928 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3929                                 enum switchdev_trans trans, __be32 dst,
3930                                 int dst_len, struct fib_info *fi, u32 tb_id,
3931                                 int flags)
3932 {
3933         struct fib_nh *nh;
3934         __be16 eth_type = htons(ETH_P_IP);
3935         __be32 dst_mask = inet_make_mask(dst_len);
3936         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3937         u32 priority = fi->fib_priority;
3938         enum rocker_of_dpa_table_id goto_tbl =
3939                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3940         u32 group_id;
3941         bool nh_on_port;
3942         bool has_gw;
3943         u32 index;
3944         int err;
3945
3946         /* XXX support ECMP */
3947
3948         nh = fi->fib_nh;
3949         nh_on_port = (fi->fib_dev == rocker_port->dev);
3950         has_gw = !!nh->nh_gw;
3951
3952         if (has_gw && nh_on_port) {
3953                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
3954                                           nh->nh_gw, &index);
3955                 if (err)
3956                         return err;
3957
3958                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3959         } else {
3960                 /* Send to CPU for processing */
3961                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3962         }
3963
3964         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
3965                                              dst_mask, priority, goto_tbl,
3966                                              group_id, flags);
3967         if (err)
3968                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3969                            err, &dst);
3970
3971         return err;
3972 }
3973
3974 /*****************
3975  * Net device ops
3976  *****************/
3977
3978 static int rocker_port_open(struct net_device *dev)
3979 {
3980         struct rocker_port *rocker_port = netdev_priv(dev);
3981         int err;
3982
3983         err = rocker_port_dma_rings_init(rocker_port);
3984         if (err)
3985                 return err;
3986
3987         err = request_irq(rocker_msix_tx_vector(rocker_port),
3988                           rocker_tx_irq_handler, 0,
3989                           rocker_driver_name, rocker_port);
3990         if (err) {
3991                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3992                 goto err_request_tx_irq;
3993         }
3994
3995         err = request_irq(rocker_msix_rx_vector(rocker_port),
3996                           rocker_rx_irq_handler, 0,
3997                           rocker_driver_name, rocker_port);
3998         if (err) {
3999                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
4000                 goto err_request_rx_irq;
4001         }
4002
4003         err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE);
4004         if (err)
4005                 goto err_fwd_enable;
4006
4007         napi_enable(&rocker_port->napi_tx);
4008         napi_enable(&rocker_port->napi_rx);
4009         rocker_port_set_enable(rocker_port, true);
4010         netif_start_queue(dev);
4011         return 0;
4012
4013 err_fwd_enable:
4014         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4015 err_request_rx_irq:
4016         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4017 err_request_tx_irq:
4018         rocker_port_dma_rings_fini(rocker_port);
4019         return err;
4020 }
4021
4022 static int rocker_port_stop(struct net_device *dev)
4023 {
4024         struct rocker_port *rocker_port = netdev_priv(dev);
4025
4026         netif_stop_queue(dev);
4027         rocker_port_set_enable(rocker_port, false);
4028         napi_disable(&rocker_port->napi_rx);
4029         napi_disable(&rocker_port->napi_tx);
4030         rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE);
4031         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4032         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4033         rocker_port_dma_rings_fini(rocker_port);
4034
4035         return 0;
4036 }
4037
4038 static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
4039                                        struct rocker_desc_info *desc_info)
4040 {
4041         struct rocker *rocker = rocker_port->rocker;
4042         struct pci_dev *pdev = rocker->pdev;
4043         struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4044         struct rocker_tlv *attr;
4045         int rem;
4046
4047         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4048         if (!attrs[ROCKER_TLV_TX_FRAGS])
4049                 return;
4050         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4051                 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4052                 dma_addr_t dma_handle;
4053                 size_t len;
4054
4055                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4056                         continue;
4057                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4058                                         attr);
4059                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4060                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4061                         continue;
4062                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4063                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4064                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4065         }
4066 }
4067
4068 static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
4069                                        struct rocker_desc_info *desc_info,
4070                                        char *buf, size_t buf_len)
4071 {
4072         struct rocker *rocker = rocker_port->rocker;
4073         struct pci_dev *pdev = rocker->pdev;
4074         dma_addr_t dma_handle;
4075         struct rocker_tlv *frag;
4076
4077         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4078         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4079                 if (net_ratelimit())
4080                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4081                 return -EIO;
4082         }
4083         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4084         if (!frag)
4085                 goto unmap_frag;
4086         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4087                                dma_handle))
4088                 goto nest_cancel;
4089         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4090                                buf_len))
4091                 goto nest_cancel;
4092         rocker_tlv_nest_end(desc_info, frag);
4093         return 0;
4094
4095 nest_cancel:
4096         rocker_tlv_nest_cancel(desc_info, frag);
4097 unmap_frag:
4098         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4099         return -EMSGSIZE;
4100 }
4101
4102 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4103 {
4104         struct rocker_port *rocker_port = netdev_priv(dev);
4105         struct rocker *rocker = rocker_port->rocker;
4106         struct rocker_desc_info *desc_info;
4107         struct rocker_tlv *frags;
4108         int i;
4109         int err;
4110
4111         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4112         if (unlikely(!desc_info)) {
4113                 if (net_ratelimit())
4114                         netdev_err(dev, "tx ring full when queue awake\n");
4115                 return NETDEV_TX_BUSY;
4116         }
4117
4118         rocker_desc_cookie_ptr_set(desc_info, skb);
4119
4120         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4121         if (!frags)
4122                 goto out;
4123         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4124                                           skb->data, skb_headlen(skb));
4125         if (err)
4126                 goto nest_cancel;
4127         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
4128                 goto nest_cancel;
4129
4130         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4131                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4132
4133                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4134                                                   skb_frag_address(frag),
4135                                                   skb_frag_size(frag));
4136                 if (err)
4137                         goto unmap_frags;
4138         }
4139         rocker_tlv_nest_end(desc_info, frags);
4140
4141         rocker_desc_gen_clear(desc_info);
4142         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4143
4144         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4145         if (!desc_info)
4146                 netif_stop_queue(dev);
4147
4148         return NETDEV_TX_OK;
4149
4150 unmap_frags:
4151         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4152 nest_cancel:
4153         rocker_tlv_nest_cancel(desc_info, frags);
4154 out:
4155         dev_kfree_skb(skb);
4156         dev->stats.tx_dropped++;
4157
4158         return NETDEV_TX_OK;
4159 }
4160
4161 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4162 {
4163         struct sockaddr *addr = p;
4164         struct rocker_port *rocker_port = netdev_priv(dev);
4165         int err;
4166
4167         if (!is_valid_ether_addr(addr->sa_data))
4168                 return -EADDRNOTAVAIL;
4169
4170         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4171         if (err)
4172                 return err;
4173         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4174         return 0;
4175 }
4176
4177 static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
4178                                        __be16 proto, u16 vid)
4179 {
4180         struct rocker_port *rocker_port = netdev_priv(dev);
4181         int err;
4182
4183         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, vid);
4184         if (err)
4185                 return err;
4186
4187         return rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4188                                       0, htons(vid));
4189 }
4190
4191 static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
4192                                         __be16 proto, u16 vid)
4193 {
4194         struct rocker_port *rocker_port = netdev_priv(dev);
4195         int err;
4196
4197         err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4198                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4199         if (err)
4200                 return err;
4201
4202         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4203                                 ROCKER_OP_FLAG_REMOVE, vid);
4204 }
4205
4206 static int rocker_port_get_phys_port_name(struct net_device *dev,
4207                                           char *buf, size_t len)
4208 {
4209         struct rocker_port *rocker_port = netdev_priv(dev);
4210         struct port_name name = { .buf = buf, .len = len };
4211         int err;
4212
4213         err = rocker_cmd_exec(rocker_port->rocker, rocker_port,
4214                               SWITCHDEV_TRANS_NONE,
4215                               rocker_cmd_get_port_settings_prep, NULL,
4216                               rocker_cmd_get_port_settings_phys_name_proc,
4217                               &name);
4218
4219         return err ? -EOPNOTSUPP : 0;
4220 }
4221
4222 static const struct net_device_ops rocker_port_netdev_ops = {
4223         .ndo_open                       = rocker_port_open,
4224         .ndo_stop                       = rocker_port_stop,
4225         .ndo_start_xmit                 = rocker_port_xmit,
4226         .ndo_set_mac_address            = rocker_port_set_mac_address,
4227         .ndo_vlan_rx_add_vid            = rocker_port_vlan_rx_add_vid,
4228         .ndo_vlan_rx_kill_vid           = rocker_port_vlan_rx_kill_vid,
4229         .ndo_bridge_getlink             = switchdev_port_bridge_getlink,
4230         .ndo_bridge_setlink             = switchdev_port_bridge_setlink,
4231         .ndo_bridge_dellink             = switchdev_port_bridge_dellink,
4232         .ndo_fdb_add                    = switchdev_port_fdb_add,
4233         .ndo_fdb_del                    = switchdev_port_fdb_del,
4234         .ndo_fdb_dump                   = switchdev_port_fdb_dump,
4235         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4236 };
4237
4238 /********************
4239  * swdev interface
4240  ********************/
4241
4242 static int rocker_port_attr_get(struct net_device *dev,
4243                                 struct switchdev_attr *attr)
4244 {
4245         struct rocker_port *rocker_port = netdev_priv(dev);
4246         struct rocker *rocker = rocker_port->rocker;
4247
4248         switch (attr->id) {
4249         case SWITCHDEV_ATTR_PORT_PARENT_ID:
4250                 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4251                 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4252                 break;
4253         case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4254                 attr->u.brport_flags = rocker_port->brport_flags;
4255                 break;
4256         default:
4257                 return -EOPNOTSUPP;
4258         }
4259
4260         return 0;
4261 }
4262
4263 static void rocker_port_trans_abort(struct rocker_port *rocker_port)
4264 {
4265         struct list_head *mem, *tmp;
4266
4267         list_for_each_safe(mem, tmp, &rocker_port->trans_mem) {
4268                 list_del(mem);
4269                 kfree(mem);
4270         }
4271 }
4272
4273 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4274                                         enum switchdev_trans trans,
4275                                         unsigned long brport_flags)
4276 {
4277         unsigned long orig_flags;
4278         int err = 0;
4279
4280         orig_flags = rocker_port->brport_flags;
4281         rocker_port->brport_flags = brport_flags;
4282         if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
4283                 err = rocker_port_set_learning(rocker_port, trans);
4284
4285         if (trans == SWITCHDEV_TRANS_PREPARE)
4286                 rocker_port->brport_flags = orig_flags;
4287
4288         return err;
4289 }
4290
4291 static int rocker_port_attr_set(struct net_device *dev,
4292                                 struct switchdev_attr *attr)
4293 {
4294         struct rocker_port *rocker_port = netdev_priv(dev);
4295         int err = 0;
4296
4297         switch (attr->trans) {
4298         case SWITCHDEV_TRANS_PREPARE:
4299                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4300                 break;
4301         case SWITCHDEV_TRANS_ABORT:
4302                 rocker_port_trans_abort(rocker_port);
4303                 return 0;
4304         default:
4305                 break;
4306         }
4307
4308         switch (attr->id) {
4309         case SWITCHDEV_ATTR_PORT_STP_STATE:
4310                 err = rocker_port_stp_update(rocker_port, attr->trans,
4311                                              attr->u.stp_state);
4312                 break;
4313         case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4314                 err = rocker_port_brport_flags_set(rocker_port, attr->trans,
4315                                                    attr->u.brport_flags);
4316                 break;
4317         default:
4318                 err = -EOPNOTSUPP;
4319                 break;
4320         }
4321
4322         return err;
4323 }
4324
4325 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4326                                 enum switchdev_trans trans, u16 vid, u16 flags)
4327 {
4328         int err;
4329
4330         /* XXX deal with flags for PVID and untagged */
4331
4332         err = rocker_port_vlan(rocker_port, trans, 0, vid);
4333         if (err)
4334                 return err;
4335
4336         return rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4337 }
4338
4339 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4340                                  enum switchdev_trans trans,
4341                                  struct switchdev_obj_vlan *vlan)
4342 {
4343         u16 vid;
4344         int err;
4345
4346         for (vid = vlan->vid_start; vid <= vlan->vid_end; vid++) {
4347                 err = rocker_port_vlan_add(rocker_port, trans,
4348                                            vid, vlan->flags);
4349                 if (err)
4350                         return err;
4351         }
4352
4353         return 0;
4354 }
4355
4356 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4357                                enum switchdev_trans trans,
4358                                struct switchdev_obj_fdb *fdb)
4359 {
4360         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4361         int flags = 0;
4362
4363         if (!rocker_port_is_bridged(rocker_port))
4364                 return -EINVAL;
4365
4366         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4367 }
4368
4369 static int rocker_port_obj_add(struct net_device *dev,
4370                                struct switchdev_obj *obj)
4371 {
4372         struct rocker_port *rocker_port = netdev_priv(dev);
4373         struct switchdev_obj_ipv4_fib *fib4;
4374         int err = 0;
4375
4376         switch (obj->trans) {
4377         case SWITCHDEV_TRANS_PREPARE:
4378                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4379                 break;
4380         case SWITCHDEV_TRANS_ABORT:
4381                 rocker_port_trans_abort(rocker_port);
4382                 return 0;
4383         default:
4384                 break;
4385         }
4386
4387         switch (obj->id) {
4388         case SWITCHDEV_OBJ_PORT_VLAN:
4389                 err = rocker_port_vlans_add(rocker_port, obj->trans,
4390                                             &obj->u.vlan);
4391                 break;
4392         case SWITCHDEV_OBJ_IPV4_FIB:
4393                 fib4 = &obj->u.ipv4_fib;
4394                 err = rocker_port_fib_ipv4(rocker_port, obj->trans,
4395                                            htonl(fib4->dst), fib4->dst_len,
4396                                            fib4->fi, fib4->tb_id, 0);
4397                 break;
4398         case SWITCHDEV_OBJ_PORT_FDB:
4399                 err = rocker_port_fdb_add(rocker_port, obj->trans, &obj->u.fdb);
4400                 break;
4401         default:
4402                 err = -EOPNOTSUPP;
4403                 break;
4404         }
4405
4406         return err;
4407 }
4408
4409 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4410                                 u16 vid, u16 flags)
4411 {
4412         int err;
4413
4414         err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4415                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4416         if (err)
4417                 return err;
4418
4419         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4420                                 ROCKER_OP_FLAG_REMOVE, vid);
4421 }
4422
4423 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4424                                  struct switchdev_obj_vlan *vlan)
4425 {
4426         u16 vid;
4427         int err;
4428
4429         for (vid = vlan->vid_start; vid <= vlan->vid_end; vid++) {
4430                 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4431                 if (err)
4432                         return err;
4433         }
4434
4435         return 0;
4436 }
4437
4438 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4439                                enum switchdev_trans trans,
4440                                struct switchdev_obj_fdb *fdb)
4441 {
4442         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4443         int flags = ROCKER_OP_FLAG_REMOVE;
4444
4445         if (!rocker_port_is_bridged(rocker_port))
4446                 return -EINVAL;
4447
4448         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4449 }
4450
4451 static int rocker_port_obj_del(struct net_device *dev,
4452                                struct switchdev_obj *obj)
4453 {
4454         struct rocker_port *rocker_port = netdev_priv(dev);
4455         struct switchdev_obj_ipv4_fib *fib4;
4456         int err = 0;
4457
4458         switch (obj->id) {
4459         case SWITCHDEV_OBJ_PORT_VLAN:
4460                 err = rocker_port_vlans_del(rocker_port, &obj->u.vlan);
4461                 break;
4462         case SWITCHDEV_OBJ_IPV4_FIB:
4463                 fib4 = &obj->u.ipv4_fib;
4464                 err = rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4465                                            htonl(fib4->dst), fib4->dst_len,
4466                                            fib4->fi, fib4->tb_id,
4467                                            ROCKER_OP_FLAG_REMOVE);
4468                 break;
4469         case SWITCHDEV_OBJ_PORT_FDB:
4470                 err = rocker_port_fdb_del(rocker_port, obj->trans, &obj->u.fdb);
4471                 break;
4472         default:
4473                 err = -EOPNOTSUPP;
4474                 break;
4475         }
4476
4477         return err;
4478 }
4479
4480 static int rocker_port_fdb_dump(struct rocker_port *rocker_port,
4481                                 struct switchdev_obj *obj)
4482 {
4483         struct rocker *rocker = rocker_port->rocker;
4484         struct switchdev_obj_fdb *fdb = &obj->u.fdb;
4485         struct rocker_fdb_tbl_entry *found;
4486         struct hlist_node *tmp;
4487         unsigned long lock_flags;
4488         int bkt;
4489         int err = 0;
4490
4491         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4492         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4493                 if (found->key.pport != rocker_port->pport)
4494                         continue;
4495                 fdb->addr = found->key.addr;
4496                 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4497                                                    found->key.vlan_id);
4498                 err = obj->cb(rocker_port->dev, obj);
4499                 if (err)
4500                         break;
4501         }
4502         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4503
4504         return err;
4505 }
4506
4507 static int rocker_port_obj_dump(struct net_device *dev,
4508                                 struct switchdev_obj *obj)
4509 {
4510         struct rocker_port *rocker_port = netdev_priv(dev);
4511         int err = 0;
4512
4513         switch (obj->id) {
4514         case SWITCHDEV_OBJ_PORT_FDB:
4515                 err = rocker_port_fdb_dump(rocker_port, obj);
4516                 break;
4517         default:
4518                 err = -EOPNOTSUPP;
4519                 break;
4520         }
4521
4522         return err;
4523 }
4524
4525 static const struct switchdev_ops rocker_port_switchdev_ops = {
4526         .switchdev_port_attr_get        = rocker_port_attr_get,
4527         .switchdev_port_attr_set        = rocker_port_attr_set,
4528         .switchdev_port_obj_add         = rocker_port_obj_add,
4529         .switchdev_port_obj_del         = rocker_port_obj_del,
4530         .switchdev_port_obj_dump        = rocker_port_obj_dump,
4531 };
4532
4533 /********************
4534  * ethtool interface
4535  ********************/
4536
4537 static int rocker_port_get_settings(struct net_device *dev,
4538                                     struct ethtool_cmd *ecmd)
4539 {
4540         struct rocker_port *rocker_port = netdev_priv(dev);
4541
4542         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4543 }
4544
4545 static int rocker_port_set_settings(struct net_device *dev,
4546                                     struct ethtool_cmd *ecmd)
4547 {
4548         struct rocker_port *rocker_port = netdev_priv(dev);
4549
4550         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4551 }
4552
4553 static void rocker_port_get_drvinfo(struct net_device *dev,
4554                                     struct ethtool_drvinfo *drvinfo)
4555 {
4556         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4557         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4558 }
4559
4560 static struct rocker_port_stats {
4561         char str[ETH_GSTRING_LEN];
4562         int type;
4563 } rocker_port_stats[] = {
4564         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4565         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4566         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4567         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4568
4569         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4570         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4571         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4572         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4573 };
4574
4575 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4576
4577 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4578                                     u8 *data)
4579 {
4580         u8 *p = data;
4581         int i;
4582
4583         switch (stringset) {
4584         case ETH_SS_STATS:
4585                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4586                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4587                         p += ETH_GSTRING_LEN;
4588                 }
4589                 break;
4590         }
4591 }
4592
4593 static int
4594 rocker_cmd_get_port_stats_prep(struct rocker *rocker,
4595                                struct rocker_port *rocker_port,
4596                                struct rocker_desc_info *desc_info,
4597                                void *priv)
4598 {
4599         struct rocker_tlv *cmd_stats;
4600
4601         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4602                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4603                 return -EMSGSIZE;
4604
4605         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4606         if (!cmd_stats)
4607                 return -EMSGSIZE;
4608
4609         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4610                                rocker_port->pport))
4611                 return -EMSGSIZE;
4612
4613         rocker_tlv_nest_end(desc_info, cmd_stats);
4614
4615         return 0;
4616 }
4617
4618 static int
4619 rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
4620                                        struct rocker_port *rocker_port,
4621                                        struct rocker_desc_info *desc_info,
4622                                        void *priv)
4623 {
4624         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4625         struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4626         struct rocker_tlv *pattr;
4627         u32 pport;
4628         u64 *data = priv;
4629         int i;
4630
4631         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4632
4633         if (!attrs[ROCKER_TLV_CMD_INFO])
4634                 return -EIO;
4635
4636         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4637                                 attrs[ROCKER_TLV_CMD_INFO]);
4638
4639         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4640                 return -EIO;
4641
4642         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4643         if (pport != rocker_port->pport)
4644                 return -EIO;
4645
4646         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4647                 pattr = stats_attrs[rocker_port_stats[i].type];
4648                 if (!pattr)
4649                         continue;
4650
4651                 data[i] = rocker_tlv_get_u64(pattr);
4652         }
4653
4654         return 0;
4655 }
4656
4657 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4658                                              void *priv)
4659 {
4660         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
4661                                SWITCHDEV_TRANS_NONE,
4662                                rocker_cmd_get_port_stats_prep, NULL,
4663                                rocker_cmd_get_port_stats_ethtool_proc,
4664                                priv);
4665 }
4666
4667 static void rocker_port_get_stats(struct net_device *dev,
4668                                   struct ethtool_stats *stats, u64 *data)
4669 {
4670         struct rocker_port *rocker_port = netdev_priv(dev);
4671
4672         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4673                 int i;
4674
4675                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4676                         data[i] = 0;
4677         }
4678 }
4679
4680 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4681 {
4682         switch (sset) {
4683         case ETH_SS_STATS:
4684                 return ROCKER_PORT_STATS_LEN;
4685         default:
4686                 return -EOPNOTSUPP;
4687         }
4688 }
4689
4690 static const struct ethtool_ops rocker_port_ethtool_ops = {
4691         .get_settings           = rocker_port_get_settings,
4692         .set_settings           = rocker_port_set_settings,
4693         .get_drvinfo            = rocker_port_get_drvinfo,
4694         .get_link               = ethtool_op_get_link,
4695         .get_strings            = rocker_port_get_strings,
4696         .get_ethtool_stats      = rocker_port_get_stats,
4697         .get_sset_count         = rocker_port_get_sset_count,
4698 };
4699
4700 /*****************
4701  * NAPI interface
4702  *****************/
4703
4704 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4705 {
4706         return container_of(napi, struct rocker_port, napi_tx);
4707 }
4708
4709 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4710 {
4711         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4712         struct rocker *rocker = rocker_port->rocker;
4713         struct rocker_desc_info *desc_info;
4714         u32 credits = 0;
4715         int err;
4716
4717         /* Cleanup tx descriptors */
4718         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4719                 struct sk_buff *skb;
4720
4721                 err = rocker_desc_err(desc_info);
4722                 if (err && net_ratelimit())
4723                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4724                                    err);
4725                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4726
4727                 skb = rocker_desc_cookie_ptr_get(desc_info);
4728                 if (err == 0) {
4729                         rocker_port->dev->stats.tx_packets++;
4730                         rocker_port->dev->stats.tx_bytes += skb->len;
4731                 } else {
4732                         rocker_port->dev->stats.tx_errors++;
4733                 }
4734
4735                 dev_kfree_skb_any(skb);
4736                 credits++;
4737         }
4738
4739         if (credits && netif_queue_stopped(rocker_port->dev))
4740                 netif_wake_queue(rocker_port->dev);
4741
4742         napi_complete(napi);
4743         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4744
4745         return 0;
4746 }
4747
4748 static int rocker_port_rx_proc(struct rocker *rocker,
4749                                struct rocker_port *rocker_port,
4750                                struct rocker_desc_info *desc_info)
4751 {
4752         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4753         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4754         size_t rx_len;
4755
4756         if (!skb)
4757                 return -ENOENT;
4758
4759         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4760         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4761                 return -EINVAL;
4762
4763         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4764
4765         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4766         skb_put(skb, rx_len);
4767         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4768
4769         rocker_port->dev->stats.rx_packets++;
4770         rocker_port->dev->stats.rx_bytes += skb->len;
4771
4772         netif_receive_skb(skb);
4773
4774         return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4775 }
4776
4777 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4778 {
4779         return container_of(napi, struct rocker_port, napi_rx);
4780 }
4781
4782 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4783 {
4784         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4785         struct rocker *rocker = rocker_port->rocker;
4786         struct rocker_desc_info *desc_info;
4787         u32 credits = 0;
4788         int err;
4789
4790         /* Process rx descriptors */
4791         while (credits < budget &&
4792                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4793                 err = rocker_desc_err(desc_info);
4794                 if (err) {
4795                         if (net_ratelimit())
4796                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4797                                            err);
4798                 } else {
4799                         err = rocker_port_rx_proc(rocker, rocker_port,
4800                                                   desc_info);
4801                         if (err && net_ratelimit())
4802                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4803                                            err);
4804                 }
4805                 if (err)
4806                         rocker_port->dev->stats.rx_errors++;
4807
4808                 rocker_desc_gen_clear(desc_info);
4809                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4810                 credits++;
4811         }
4812
4813         if (credits < budget)
4814                 napi_complete(napi);
4815
4816         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4817
4818         return credits;
4819 }
4820
4821 /*****************
4822  * PCI driver ops
4823  *****************/
4824
4825 static void rocker_carrier_init(struct rocker_port *rocker_port)
4826 {
4827         struct rocker *rocker = rocker_port->rocker;
4828         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4829         bool link_up;
4830
4831         link_up = link_status & (1 << rocker_port->pport);
4832         if (link_up)
4833                 netif_carrier_on(rocker_port->dev);
4834         else
4835                 netif_carrier_off(rocker_port->dev);
4836 }
4837
4838 static void rocker_remove_ports(struct rocker *rocker)
4839 {
4840         struct rocker_port *rocker_port;
4841         int i;
4842
4843         for (i = 0; i < rocker->port_count; i++) {
4844                 rocker_port = rocker->ports[i];
4845                 rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4846                                    ROCKER_OP_FLAG_REMOVE);
4847                 unregister_netdev(rocker_port->dev);
4848         }
4849         kfree(rocker->ports);
4850 }
4851
4852 static void rocker_port_dev_addr_init(struct rocker *rocker,
4853                                       struct rocker_port *rocker_port)
4854 {
4855         struct pci_dev *pdev = rocker->pdev;
4856         int err;
4857
4858         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4859                                                    rocker_port->dev->dev_addr);
4860         if (err) {
4861                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4862                 eth_hw_addr_random(rocker_port->dev);
4863         }
4864 }
4865
4866 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4867 {
4868         struct pci_dev *pdev = rocker->pdev;
4869         struct rocker_port *rocker_port;
4870         struct net_device *dev;
4871         int err;
4872
4873         dev = alloc_etherdev(sizeof(struct rocker_port));
4874         if (!dev)
4875                 return -ENOMEM;
4876         rocker_port = netdev_priv(dev);
4877         rocker_port->dev = dev;
4878         rocker_port->rocker = rocker;
4879         rocker_port->port_number = port_number;
4880         rocker_port->pport = port_number + 1;
4881         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4882         INIT_LIST_HEAD(&rocker_port->trans_mem);
4883
4884         rocker_port_dev_addr_init(rocker, rocker_port);
4885         dev->netdev_ops = &rocker_port_netdev_ops;
4886         dev->ethtool_ops = &rocker_port_ethtool_ops;
4887         dev->switchdev_ops = &rocker_port_switchdev_ops;
4888         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4889                        NAPI_POLL_WEIGHT);
4890         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4891                        NAPI_POLL_WEIGHT);
4892         rocker_carrier_init(rocker_port);
4893
4894         dev->features |= NETIF_F_NETNS_LOCAL |
4895                          NETIF_F_HW_VLAN_CTAG_FILTER;
4896
4897         err = register_netdev(dev);
4898         if (err) {
4899                 dev_err(&pdev->dev, "register_netdev failed\n");
4900                 goto err_register_netdev;
4901         }
4902         rocker->ports[port_number] = rocker_port;
4903
4904         rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
4905
4906         rocker_port->internal_vlan_id =
4907                 rocker_port_internal_vlan_id_get(rocker_port,
4908                                                  SWITCHDEV_TRANS_NONE,
4909                                                  dev->ifindex);
4910         err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4911         if (err) {
4912                 dev_err(&pdev->dev, "install ig port table failed\n");
4913                 goto err_port_ig_tbl;
4914         }
4915
4916         return 0;
4917
4918 err_port_ig_tbl:
4919         unregister_netdev(dev);
4920 err_register_netdev:
4921         free_netdev(dev);
4922         return err;
4923 }
4924
4925 static int rocker_probe_ports(struct rocker *rocker)
4926 {
4927         int i;
4928         size_t alloc_size;
4929         int err;
4930
4931         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4932         rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4933         if (!rocker->ports)
4934                 return -ENOMEM;
4935         for (i = 0; i < rocker->port_count; i++) {
4936                 err = rocker_probe_port(rocker, i);
4937                 if (err)
4938                         goto remove_ports;
4939         }
4940         return 0;
4941
4942 remove_ports:
4943         rocker_remove_ports(rocker);
4944         return err;
4945 }
4946
4947 static int rocker_msix_init(struct rocker *rocker)
4948 {
4949         struct pci_dev *pdev = rocker->pdev;
4950         int msix_entries;
4951         int i;
4952         int err;
4953
4954         msix_entries = pci_msix_vec_count(pdev);
4955         if (msix_entries < 0)
4956                 return msix_entries;
4957
4958         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4959                 return -EINVAL;
4960
4961         rocker->msix_entries = kmalloc_array(msix_entries,
4962                                              sizeof(struct msix_entry),
4963                                              GFP_KERNEL);
4964         if (!rocker->msix_entries)
4965                 return -ENOMEM;
4966
4967         for (i = 0; i < msix_entries; i++)
4968                 rocker->msix_entries[i].entry = i;
4969
4970         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4971         if (err < 0)
4972                 goto err_enable_msix;
4973
4974         return 0;
4975
4976 err_enable_msix:
4977         kfree(rocker->msix_entries);
4978         return err;
4979 }
4980
4981 static void rocker_msix_fini(struct rocker *rocker)
4982 {
4983         pci_disable_msix(rocker->pdev);
4984         kfree(rocker->msix_entries);
4985 }
4986
4987 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4988 {
4989         struct rocker *rocker;
4990         int err;
4991
4992         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4993         if (!rocker)
4994                 return -ENOMEM;
4995
4996         err = pci_enable_device(pdev);
4997         if (err) {
4998                 dev_err(&pdev->dev, "pci_enable_device failed\n");
4999                 goto err_pci_enable_device;
5000         }
5001
5002         err = pci_request_regions(pdev, rocker_driver_name);
5003         if (err) {
5004                 dev_err(&pdev->dev, "pci_request_regions failed\n");
5005                 goto err_pci_request_regions;
5006         }
5007
5008         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5009         if (!err) {
5010                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5011                 if (err) {
5012                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5013                         goto err_pci_set_dma_mask;
5014                 }
5015         } else {
5016                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5017                 if (err) {
5018                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5019                         goto err_pci_set_dma_mask;
5020                 }
5021         }
5022
5023         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5024                 dev_err(&pdev->dev, "invalid PCI region size\n");
5025                 err = -EINVAL;
5026                 goto err_pci_resource_len_check;
5027         }
5028
5029         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5030                                   pci_resource_len(pdev, 0));
5031         if (!rocker->hw_addr) {
5032                 dev_err(&pdev->dev, "ioremap failed\n");
5033                 err = -EIO;
5034                 goto err_ioremap;
5035         }
5036         pci_set_master(pdev);
5037
5038         rocker->pdev = pdev;
5039         pci_set_drvdata(pdev, rocker);
5040
5041         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5042
5043         err = rocker_msix_init(rocker);
5044         if (err) {
5045                 dev_err(&pdev->dev, "MSI-X init failed\n");
5046                 goto err_msix_init;
5047         }
5048
5049         err = rocker_basic_hw_test(rocker);
5050         if (err) {
5051                 dev_err(&pdev->dev, "basic hw test failed\n");
5052                 goto err_basic_hw_test;
5053         }
5054
5055         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5056
5057         err = rocker_dma_rings_init(rocker);
5058         if (err)
5059                 goto err_dma_rings_init;
5060
5061         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5062                           rocker_cmd_irq_handler, 0,
5063                           rocker_driver_name, rocker);
5064         if (err) {
5065                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5066                 goto err_request_cmd_irq;
5067         }
5068
5069         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5070                           rocker_event_irq_handler, 0,
5071                           rocker_driver_name, rocker);
5072         if (err) {
5073                 dev_err(&pdev->dev, "cannot assign event irq\n");
5074                 goto err_request_event_irq;
5075         }
5076
5077         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5078
5079         err = rocker_init_tbls(rocker);
5080         if (err) {
5081                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5082                 goto err_init_tbls;
5083         }
5084
5085         err = rocker_probe_ports(rocker);
5086         if (err) {
5087                 dev_err(&pdev->dev, "failed to probe ports\n");
5088                 goto err_probe_ports;
5089         }
5090
5091         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
5092
5093         return 0;
5094
5095 err_probe_ports:
5096         rocker_free_tbls(rocker);
5097 err_init_tbls:
5098         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5099 err_request_event_irq:
5100         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5101 err_request_cmd_irq:
5102         rocker_dma_rings_fini(rocker);
5103 err_dma_rings_init:
5104 err_basic_hw_test:
5105         rocker_msix_fini(rocker);
5106 err_msix_init:
5107         iounmap(rocker->hw_addr);
5108 err_ioremap:
5109 err_pci_resource_len_check:
5110 err_pci_set_dma_mask:
5111         pci_release_regions(pdev);
5112 err_pci_request_regions:
5113         pci_disable_device(pdev);
5114 err_pci_enable_device:
5115         kfree(rocker);
5116         return err;
5117 }
5118
5119 static void rocker_remove(struct pci_dev *pdev)
5120 {
5121         struct rocker *rocker = pci_get_drvdata(pdev);
5122
5123         rocker_free_tbls(rocker);
5124         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5125         rocker_remove_ports(rocker);
5126         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5127         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5128         rocker_dma_rings_fini(rocker);
5129         rocker_msix_fini(rocker);
5130         iounmap(rocker->hw_addr);
5131         pci_release_regions(rocker->pdev);
5132         pci_disable_device(rocker->pdev);
5133         kfree(rocker);
5134 }
5135
5136 static struct pci_driver rocker_pci_driver = {
5137         .name           = rocker_driver_name,
5138         .id_table       = rocker_pci_id_table,
5139         .probe          = rocker_probe,
5140         .remove         = rocker_remove,
5141 };
5142
5143 /************************************
5144  * Net device notifier event handler
5145  ************************************/
5146
5147 static bool rocker_port_dev_check(struct net_device *dev)
5148 {
5149         return dev->netdev_ops == &rocker_port_netdev_ops;
5150 }
5151
5152 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5153                                    struct net_device *bridge)
5154 {
5155         int err;
5156
5157         rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
5158                                          rocker_port->dev->ifindex);
5159
5160         rocker_port->bridge_dev = bridge;
5161
5162         /* Use bridge internal VLAN ID for untagged pkts */
5163         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
5164                                ROCKER_OP_FLAG_REMOVE, 0);
5165         if (err)
5166                 return err;
5167         rocker_port->internal_vlan_id =
5168                 rocker_port_internal_vlan_id_get(rocker_port,
5169                                                  SWITCHDEV_TRANS_NONE,
5170                                                  bridge->ifindex);
5171         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
5172 }
5173
5174 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5175 {
5176         int err;
5177
5178         rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
5179                                          rocker_port->bridge_dev->ifindex);
5180
5181         rocker_port->bridge_dev = NULL;
5182
5183         /* Use port internal VLAN ID for untagged pkts */
5184         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
5185                                ROCKER_OP_FLAG_REMOVE, 0);
5186         if (err)
5187                 return err;
5188         rocker_port->internal_vlan_id =
5189                 rocker_port_internal_vlan_id_get(rocker_port,
5190                                                  SWITCHDEV_TRANS_NONE,
5191                                                  rocker_port->dev->ifindex);
5192         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
5193         if (err)
5194                 return err;
5195
5196         if (rocker_port->dev->flags & IFF_UP)
5197                 err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE);
5198
5199         return err;
5200 }
5201
5202 static int rocker_port_master_changed(struct net_device *dev)
5203 {
5204         struct rocker_port *rocker_port = netdev_priv(dev);
5205         struct net_device *master = netdev_master_upper_dev_get(dev);
5206         int err = 0;
5207
5208         /* There are currently three cases handled here:
5209          * 1. Joining a bridge
5210          * 2. Leaving a previously joined bridge
5211          * 3. Other, e.g. being added to or removed from a bond or openvswitch,
5212          *    in which case nothing is done
5213          */
5214         if (master && master->rtnl_link_ops &&
5215             !strcmp(master->rtnl_link_ops->kind, "bridge"))
5216                 err = rocker_port_bridge_join(rocker_port, master);
5217         else if (rocker_port_is_bridged(rocker_port))
5218                 err = rocker_port_bridge_leave(rocker_port);
5219
5220         return err;
5221 }
5222
5223 static int rocker_netdevice_event(struct notifier_block *unused,
5224                                   unsigned long event, void *ptr)
5225 {
5226         struct net_device *dev;
5227         int err;
5228
5229         switch (event) {
5230         case NETDEV_CHANGEUPPER:
5231                 dev = netdev_notifier_info_to_dev(ptr);
5232                 if (!rocker_port_dev_check(dev))
5233                         return NOTIFY_DONE;
5234                 err = rocker_port_master_changed(dev);
5235                 if (err)
5236                         netdev_warn(dev,
5237                                     "failed to reflect master change (err %d)\n",
5238                                     err);
5239                 break;
5240         }
5241
5242         return NOTIFY_DONE;
5243 }
5244
5245 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5246         .notifier_call = rocker_netdevice_event,
5247 };
5248
5249 /************************************
5250  * Net event notifier event handler
5251  ************************************/
5252
5253 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5254 {
5255         struct rocker_port *rocker_port = netdev_priv(dev);
5256         int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
5257         __be32 ip_addr = *(__be32 *)n->primary_key;
5258
5259         return rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,
5260                                       flags, ip_addr, n->ha);
5261 }
5262
5263 static int rocker_netevent_event(struct notifier_block *unused,
5264                                  unsigned long event, void *ptr)
5265 {
5266         struct net_device *dev;
5267         struct neighbour *n = ptr;
5268         int err;
5269
5270         switch (event) {
5271         case NETEVENT_NEIGH_UPDATE:
5272                 if (n->tbl != &arp_tbl)
5273                         return NOTIFY_DONE;
5274                 dev = n->dev;
5275                 if (!rocker_port_dev_check(dev))
5276                         return NOTIFY_DONE;
5277                 err = rocker_neigh_update(dev, n);
5278                 if (err)
5279                         netdev_warn(dev,
5280                                     "failed to handle neigh update (err %d)\n",
5281                                     err);
5282                 break;
5283         }
5284
5285         return NOTIFY_DONE;
5286 }
5287
5288 static struct notifier_block rocker_netevent_nb __read_mostly = {
5289         .notifier_call = rocker_netevent_event,
5290 };
5291
5292 /***********************
5293  * Module init and exit
5294  ***********************/
5295
5296 static int __init rocker_module_init(void)
5297 {
5298         int err;
5299
5300         register_netdevice_notifier(&rocker_netdevice_nb);
5301         register_netevent_notifier(&rocker_netevent_nb);
5302         err = pci_register_driver(&rocker_pci_driver);
5303         if (err)
5304                 goto err_pci_register_driver;
5305         return 0;
5306
5307 err_pci_register_driver:
5308         unregister_netdevice_notifier(&rocker_netevent_nb);
5309         unregister_netdevice_notifier(&rocker_netdevice_nb);
5310         return err;
5311 }
5312
5313 static void __exit rocker_module_exit(void)
5314 {
5315         unregister_netevent_notifier(&rocker_netevent_nb);
5316         unregister_netdevice_notifier(&rocker_netdevice_nb);
5317         pci_unregister_driver(&rocker_pci_driver);
5318 }
5319
5320 module_init(rocker_module_init);
5321 module_exit(rocker_module_exit);
5322
5323 MODULE_LICENSE("GPL v2");
5324 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5325 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5326 MODULE_DESCRIPTION("Rocker switch device driver");
5327 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);