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 44static const char rocker_driver_name[] = "rocker"; 45 46static const struct pci_device_id rocker_pci_id_table[] = { 47 {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0}, 48 {0, } 49}; 50 51struct 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 116struct 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 125struct 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 151struct 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 162struct rocker_internal_vlan_tbl_entry { 163 struct hlist_node entry; 164 int ifindex; /* key */ 165 u32 ref_count; 166 __be16 vlan_id; 167}; 168 169struct 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 179struct rocker_desc_info { 180 char *data; /* mapped */ 181 size_t data_size; 182 size_t tlv_size; 183 struct rocker_desc *desc; 184 DEFINE_DMA_UNMAP_ADDR(mapaddr); 185}; 186 187struct 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 197struct rocker; 198 199enum { 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 213struct 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}; 229 230struct rocker { 231 struct pci_dev *pdev; 232 u8 __iomem *hw_addr; 233 struct msix_entry *msix_entries; 234 unsigned int port_count; 235 struct rocker_port **ports; 236 struct { 237 u64 id; 238 } hw; 239 spinlock_t cmd_ring_lock; 240 struct rocker_dma_ring_info cmd_ring; 241 struct rocker_dma_ring_info event_ring; 242 DECLARE_HASHTABLE(flow_tbl, 16); 243 spinlock_t flow_tbl_lock; 244 u64 flow_tbl_next_cookie; 245 DECLARE_HASHTABLE(group_tbl, 16); 246 spinlock_t group_tbl_lock; 247 DECLARE_HASHTABLE(fdb_tbl, 16); 248 spinlock_t fdb_tbl_lock; 249 unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN]; 250 DECLARE_HASHTABLE(internal_vlan_tbl, 8); 251 spinlock_t internal_vlan_tbl_lock; 252 DECLARE_HASHTABLE(neigh_tbl, 16); 253 spinlock_t neigh_tbl_lock; 254 u32 neigh_tbl_next_index; 255}; 256 257static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 258static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 259static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; 260static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 }; 261static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 }; 262static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 }; 263static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 }; 264static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 }; 265static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }; 266 267/* Rocker priority levels for flow table entries. Higher 268 * priority match takes precedence over lower priority match. 269 */ 270 271enum { 272 ROCKER_PRIORITY_UNKNOWN = 0, 273 ROCKER_PRIORITY_IG_PORT = 1, 274 ROCKER_PRIORITY_VLAN = 1, 275 ROCKER_PRIORITY_TERM_MAC_UCAST = 0, 276 ROCKER_PRIORITY_TERM_MAC_MCAST = 1, 277 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1, 278 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2, 279 ROCKER_PRIORITY_BRIDGING_VLAN = 3, 280 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1, 281 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2, 282 ROCKER_PRIORITY_BRIDGING_TENANT = 3, 283 ROCKER_PRIORITY_ACL_CTRL = 3, 284 ROCKER_PRIORITY_ACL_NORMAL = 2, 285 ROCKER_PRIORITY_ACL_DFLT = 1, 286}; 287 288static bool rocker_vlan_id_is_internal(__be16 vlan_id) 289{ 290 u16 start = ROCKER_INTERNAL_VLAN_ID_BASE; 291 u16 end = 0xffe; 292 u16 _vlan_id = ntohs(vlan_id); 293 294 return (_vlan_id >= start && _vlan_id <= end); 295} 296 297static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port, 298 u16 vid, bool *pop_vlan) 299{ 300 __be16 vlan_id; 301 302 if (pop_vlan) 303 *pop_vlan = false; 304 vlan_id = htons(vid); 305 if (!vlan_id) { 306 vlan_id = rocker_port->internal_vlan_id; 307 if (pop_vlan) 308 *pop_vlan = true; 309 } 310 311 return vlan_id; 312} 313 314static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port, 315 __be16 vlan_id) 316{ 317 if (rocker_vlan_id_is_internal(vlan_id)) 318 return 0; 319 320 return ntohs(vlan_id); 321} 322 323static bool rocker_port_is_bridged(struct rocker_port *rocker_port) 324{ 325 return !!rocker_port->bridge_dev; 326} 327 328struct rocker_wait { 329 wait_queue_head_t wait; 330 bool done; 331 bool nowait; 332}; 333 334static void rocker_wait_reset(struct rocker_wait *wait) 335{ 336 wait->done = false; 337 wait->nowait = false; 338} 339 340static void rocker_wait_init(struct rocker_wait *wait) 341{ 342 init_waitqueue_head(&wait->wait); 343 rocker_wait_reset(wait); 344} 345 346static struct rocker_wait *rocker_wait_create(gfp_t gfp) 347{ 348 struct rocker_wait *wait; 349 350 wait = kmalloc(sizeof(*wait), gfp); 351 if (!wait) 352 return NULL; 353 rocker_wait_init(wait); 354 return wait; 355} 356 357static void rocker_wait_destroy(struct rocker_wait *work) 358{ 359 kfree(work); 360} 361 362static bool rocker_wait_event_timeout(struct rocker_wait *wait, 363 unsigned long timeout) 364{ 365 wait_event_timeout(wait->wait, wait->done, HZ / 10); 366 if (!wait->done) 367 return false; 368 return true; 369} 370 371static void rocker_wait_wake_up(struct rocker_wait *wait) 372{ 373 wait->done = true; 374 wake_up(&wait->wait); 375} 376 377static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector) 378{ 379 return rocker->msix_entries[vector].vector; 380} 381 382static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port) 383{ 384 return rocker_msix_vector(rocker_port->rocker, 385 ROCKER_MSIX_VEC_TX(rocker_port->port_number)); 386} 387 388static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port) 389{ 390 return rocker_msix_vector(rocker_port->rocker, 391 ROCKER_MSIX_VEC_RX(rocker_port->port_number)); 392} 393 394#define rocker_write32(rocker, reg, val) \ 395 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg)) 396#define rocker_read32(rocker, reg) \ 397 readl((rocker)->hw_addr + (ROCKER_ ## reg)) 398#define rocker_write64(rocker, reg, val) \ 399 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg)) 400#define rocker_read64(rocker, reg) \ 401 readq((rocker)->hw_addr + (ROCKER_ ## reg)) 402 403/***************************** 404 * HW basic testing functions 405 *****************************/ 406 407static int rocker_reg_test(struct rocker *rocker) 408{ 409 struct pci_dev *pdev = rocker->pdev; 410 u64 test_reg; 411 u64 rnd; 412 413 rnd = prandom_u32(); 414 rnd >>= 1; 415 rocker_write32(rocker, TEST_REG, rnd); 416 test_reg = rocker_read32(rocker, TEST_REG); 417 if (test_reg != rnd * 2) { 418 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n", 419 test_reg, rnd * 2); 420 return -EIO; 421 } 422 423 rnd = prandom_u32(); 424 rnd <<= 31; 425 rnd |= prandom_u32(); 426 rocker_write64(rocker, TEST_REG64, rnd); 427 test_reg = rocker_read64(rocker, TEST_REG64); 428 if (test_reg != rnd * 2) { 429 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n", 430 test_reg, rnd * 2); 431 return -EIO; 432 } 433 434 return 0; 435} 436 437static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait, 438 u32 test_type, dma_addr_t dma_handle, 439 unsigned char *buf, unsigned char *expect, 440 size_t size) 441{ 442 struct pci_dev *pdev = rocker->pdev; 443 int i; 444 445 rocker_wait_reset(wait); 446 rocker_write32(rocker, TEST_DMA_CTRL, test_type); 447 448 if (!rocker_wait_event_timeout(wait, HZ / 10)) { 449 dev_err(&pdev->dev, "no interrupt received within a timeout\n"); 450 return -EIO; 451 } 452 453 for (i = 0; i < size; i++) { 454 if (buf[i] != expect[i]) { 455 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected", 456 buf[i], i, expect[i]); 457 return -EIO; 458 } 459 } 460 return 0; 461} 462 463#define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4) 464#define ROCKER_TEST_DMA_FILL_PATTERN 0x96 465 466static int rocker_dma_test_offset(struct rocker *rocker, 467 struct rocker_wait *wait, int offset) 468{ 469 struct pci_dev *pdev = rocker->pdev; 470 unsigned char *alloc; 471 unsigned char *buf; 472 unsigned char *expect; 473 dma_addr_t dma_handle; 474 int i; 475 int err; 476 477 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset, 478 GFP_KERNEL | GFP_DMA); 479 if (!alloc) 480 return -ENOMEM; 481 buf = alloc + offset; 482 expect = buf + ROCKER_TEST_DMA_BUF_SIZE; 483 484 dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE, 485 PCI_DMA_BIDIRECTIONAL); 486 if (pci_dma_mapping_error(pdev, dma_handle)) { 487 err = -EIO; 488 goto free_alloc; 489 } 490 491 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle); 492 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE); 493 494 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE); 495 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL, 496 dma_handle, buf, expect, 497 ROCKER_TEST_DMA_BUF_SIZE); 498 if (err) 499 goto unmap; 500 501 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE); 502 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR, 503 dma_handle, buf, expect, 504 ROCKER_TEST_DMA_BUF_SIZE); 505 if (err) 506 goto unmap; 507 508 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); 509 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) 510 expect[i] = ~buf[i]; 511 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, 512 dma_handle, buf, expect, 513 ROCKER_TEST_DMA_BUF_SIZE); 514 if (err) 515 goto unmap; 516 517unmap: 518 pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE, 519 PCI_DMA_BIDIRECTIONAL); 520free_alloc: 521 kfree(alloc); 522 523 return err; 524} 525 526static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait) 527{ 528 int i; 529 int err; 530 531 for (i = 0; i < 8; i++) { 532 err = rocker_dma_test_offset(rocker, wait, i); 533 if (err) 534 return err; 535 } 536 return 0; 537} 538 539static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id) 540{ 541 struct rocker_wait *wait = dev_id; 542 543 rocker_wait_wake_up(wait); 544 545 return IRQ_HANDLED; 546} 547 548static int rocker_basic_hw_test(struct rocker *rocker) 549{ 550 struct pci_dev *pdev = rocker->pdev; 551 struct rocker_wait wait; 552 int err; 553 554 err = rocker_reg_test(rocker); 555 if (err) { 556 dev_err(&pdev->dev, "reg test failed\n"); 557 return err; 558 } 559 560 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), 561 rocker_test_irq_handler, 0, 562 rocker_driver_name, &wait); 563 if (err) { 564 dev_err(&pdev->dev, "cannot assign test irq\n"); 565 return err; 566 } 567 568 rocker_wait_init(&wait); 569 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST); 570 571 if (!rocker_wait_event_timeout(&wait, HZ / 10)) { 572 dev_err(&pdev->dev, "no interrupt received within a timeout\n"); 573 err = -EIO; 574 goto free_irq; 575 } 576 577 err = rocker_dma_test(rocker, &wait); 578 if (err) 579 dev_err(&pdev->dev, "dma test failed\n"); 580 581free_irq: 582 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait); 583 return err; 584} 585 586/****** 587 * TLV 588 ******/ 589 590#define ROCKER_TLV_ALIGNTO 8U 591#define ROCKER_TLV_ALIGN(len) \ 592 (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1)) 593#define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv)) 594 595/* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) ---> 596 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+ 597 * | Header | Pad | Payload | Pad | 598 * | (struct rocker_tlv) | ing | | ing | 599 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+ 600 * <--------------------------- tlv->len --------------------------> 601 */ 602 603static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv, 604 int *remaining) 605{ 606 int totlen = ROCKER_TLV_ALIGN(tlv->len); 607 608 *remaining -= totlen; 609 return (struct rocker_tlv *) ((char *) tlv + totlen); 610} 611 612static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining) 613{ 614 return remaining >= (int) ROCKER_TLV_HDRLEN && 615 tlv->len >= ROCKER_TLV_HDRLEN && 616 tlv->len <= remaining; 617} 618 619#define rocker_tlv_for_each(pos, head, len, rem) \ 620 for (pos = head, rem = len; \ 621 rocker_tlv_ok(pos, rem); \ 622 pos = rocker_tlv_next(pos, &(rem))) 623 624#define rocker_tlv_for_each_nested(pos, tlv, rem) \ 625 rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \ 626 rocker_tlv_len(tlv), rem) 627 628static int rocker_tlv_attr_size(int payload) 629{ 630 return ROCKER_TLV_HDRLEN + payload; 631} 632 633static int rocker_tlv_total_size(int payload) 634{ 635 return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload)); 636} 637 638static int rocker_tlv_padlen(int payload) 639{ 640 return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload); 641} 642 643static int rocker_tlv_type(const struct rocker_tlv *tlv) 644{ 645 return tlv->type; 646} 647 648static void *rocker_tlv_data(const struct rocker_tlv *tlv) 649{ 650 return (char *) tlv + ROCKER_TLV_HDRLEN; 651} 652 653static int rocker_tlv_len(const struct rocker_tlv *tlv) 654{ 655 return tlv->len - ROCKER_TLV_HDRLEN; 656} 657 658static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv) 659{ 660 return *(u8 *) rocker_tlv_data(tlv); 661} 662 663static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv) 664{ 665 return *(u16 *) rocker_tlv_data(tlv); 666} 667 668static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv) 669{ 670 return *(__be16 *) rocker_tlv_data(tlv); 671} 672 673static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv) 674{ 675 return *(u32 *) rocker_tlv_data(tlv); 676} 677 678static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv) 679{ 680 return *(u64 *) rocker_tlv_data(tlv); 681} 682 683static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype, 684 const char *buf, int buf_len) 685{ 686 const struct rocker_tlv *tlv; 687 const struct rocker_tlv *head = (const struct rocker_tlv *) buf; 688 int rem; 689 690 memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1)); 691 692 rocker_tlv_for_each(tlv, head, buf_len, rem) { 693 u32 type = rocker_tlv_type(tlv); 694 695 if (type > 0 && type <= maxtype) 696 tb[type] = (struct rocker_tlv *) tlv; 697 } 698} 699 700static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype, 701 const struct rocker_tlv *tlv) 702{ 703 rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv), 704 rocker_tlv_len(tlv)); 705} 706 707static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype, 708 struct rocker_desc_info *desc_info) 709{ 710 rocker_tlv_parse(tb, maxtype, desc_info->data, 711 desc_info->desc->tlv_size); 712} 713 714static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info) 715{ 716 return (struct rocker_tlv *) ((char *) desc_info->data + 717 desc_info->tlv_size); 718} 719 720static int rocker_tlv_put(struct rocker_desc_info *desc_info, 721 int attrtype, int attrlen, const void *data) 722{ 723 int tail_room = desc_info->data_size - desc_info->tlv_size; 724 int total_size = rocker_tlv_total_size(attrlen); 725 struct rocker_tlv *tlv; 726 727 if (unlikely(tail_room < total_size)) 728 return -EMSGSIZE; 729 730 tlv = rocker_tlv_start(desc_info); 731 desc_info->tlv_size += total_size; 732 tlv->type = attrtype; 733 tlv->len = rocker_tlv_attr_size(attrlen); 734 memcpy(rocker_tlv_data(tlv), data, attrlen); 735 memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen)); 736 return 0; 737} 738 739static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info, 740 int attrtype, u8 value) 741{ 742 return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value); 743} 744 745static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info, 746 int attrtype, u16 value) 747{ 748 return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value); 749} 750 751static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info, 752 int attrtype, __be16 value) 753{ 754 return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value); 755} 756 757static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info, 758 int attrtype, u32 value) 759{ 760 return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value); 761} 762 763static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info, 764 int attrtype, __be32 value) 765{ 766 return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value); 767} 768 769static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info, 770 int attrtype, u64 value) 771{ 772 return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value); 773} 774 775static struct rocker_tlv * 776rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype) 777{ 778 struct rocker_tlv *start = rocker_tlv_start(desc_info); 779 780 if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0) 781 return NULL; 782 783 return start; 784} 785 786static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info, 787 struct rocker_tlv *start) 788{ 789 start->len = (char *) rocker_tlv_start(desc_info) - (char *) start; 790} 791 792static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info, 793 struct rocker_tlv *start) 794{ 795 desc_info->tlv_size = (char *) start - desc_info->data; 796} 797 798/****************************************** 799 * DMA rings and descriptors manipulations 800 ******************************************/ 801 802static u32 __pos_inc(u32 pos, size_t limit) 803{ 804 return ++pos == limit ? 0 : pos; 805} 806 807static int rocker_desc_err(struct rocker_desc_info *desc_info) 808{ 809 int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN; 810 811 switch (err) { 812 case ROCKER_OK: 813 return 0; 814 case -ROCKER_ENOENT: 815 return -ENOENT; 816 case -ROCKER_ENXIO: 817 return -ENXIO; 818 case -ROCKER_ENOMEM: 819 return -ENOMEM; 820 case -ROCKER_EEXIST: 821 return -EEXIST; 822 case -ROCKER_EINVAL: 823 return -EINVAL; 824 case -ROCKER_EMSGSIZE: 825 return -EMSGSIZE; 826 case -ROCKER_ENOTSUP: 827 return -EOPNOTSUPP; 828 case -ROCKER_ENOBUFS: 829 return -ENOBUFS; 830 } 831 832 return -EINVAL; 833} 834 835static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info) 836{ 837 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN; 838} 839 840static bool rocker_desc_gen(struct rocker_desc_info *desc_info) 841{ 842 u32 comp_err = desc_info->desc->comp_err; 843 844 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false; 845} 846 847static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info) 848{ 849 return (void *)(uintptr_t)desc_info->desc->cookie; 850} 851 852static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info, 853 void *ptr) 854{ 855 desc_info->desc->cookie = (uintptr_t) ptr; 856} 857 858static struct rocker_desc_info * 859rocker_desc_head_get(struct rocker_dma_ring_info *info) 860{ 861 static struct rocker_desc_info *desc_info; 862 u32 head = __pos_inc(info->head, info->size); 863 864 desc_info = &info->desc_info[info->head]; 865 if (head == info->tail) 866 return NULL; /* ring full */ 867 desc_info->tlv_size = 0; 868 return desc_info; 869} 870 871static void rocker_desc_commit(struct rocker_desc_info *desc_info) 872{ 873 desc_info->desc->buf_size = desc_info->data_size; 874 desc_info->desc->tlv_size = desc_info->tlv_size; 875} 876 877static void rocker_desc_head_set(struct rocker *rocker, 878 struct rocker_dma_ring_info *info, 879 struct rocker_desc_info *desc_info) 880{ 881 u32 head = __pos_inc(info->head, info->size); 882 883 BUG_ON(head == info->tail); 884 rocker_desc_commit(desc_info); 885 info->head = head; 886 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head); 887} 888 889static struct rocker_desc_info * 890rocker_desc_tail_get(struct rocker_dma_ring_info *info) 891{ 892 static struct rocker_desc_info *desc_info; 893 894 if (info->tail == info->head) 895 return NULL; /* nothing to be done between head and tail */ 896 desc_info = &info->desc_info[info->tail]; 897 if (!rocker_desc_gen(desc_info)) 898 return NULL; /* gen bit not set, desc is not ready yet */ 899 info->tail = __pos_inc(info->tail, info->size); 900 desc_info->tlv_size = desc_info->desc->tlv_size; 901 return desc_info; 902} 903 904static void rocker_dma_ring_credits_set(struct rocker *rocker, 905 struct rocker_dma_ring_info *info, 906 u32 credits) 907{ 908 if (credits) 909 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits); 910} 911 912static unsigned long rocker_dma_ring_size_fix(size_t size) 913{ 914 return max(ROCKER_DMA_SIZE_MIN, 915 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX)); 916} 917 918static int rocker_dma_ring_create(struct rocker *rocker, 919 unsigned int type, 920 size_t size, 921 struct rocker_dma_ring_info *info) 922{ 923 int i; 924 925 BUG_ON(size != rocker_dma_ring_size_fix(size)); 926 info->size = size; 927 info->type = type; 928 info->head = 0; 929 info->tail = 0; 930 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info), 931 GFP_KERNEL); 932 if (!info->desc_info) 933 return -ENOMEM; 934 935 info->desc = pci_alloc_consistent(rocker->pdev, 936 info->size * sizeof(*info->desc), 937 &info->mapaddr); 938 if (!info->desc) { 939 kfree(info->desc_info); 940 return -ENOMEM; 941 } 942 943 for (i = 0; i < info->size; i++) 944 info->desc_info[i].desc = &info->desc[i]; 945 946 rocker_write32(rocker, DMA_DESC_CTRL(info->type), 947 ROCKER_DMA_DESC_CTRL_RESET); 948 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr); 949 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size); 950 951 return 0; 952} 953 954static void rocker_dma_ring_destroy(struct rocker *rocker, 955 struct rocker_dma_ring_info *info) 956{ 957 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0); 958 959 pci_free_consistent(rocker->pdev, 960 info->size * sizeof(struct rocker_desc), 961 info->desc, info->mapaddr); 962 kfree(info->desc_info); 963} 964 965static void rocker_dma_ring_pass_to_producer(struct rocker *rocker, 966 struct rocker_dma_ring_info *info) 967{ 968 int i; 969 970 BUG_ON(info->head || info->tail); 971 972 /* When ring is consumer, we need to advance head for each desc. 973 * That tells hw that the desc is ready to be used by it. 974 */ 975 for (i = 0; i < info->size - 1; i++) 976 rocker_desc_head_set(rocker, info, &info->desc_info[i]); 977 rocker_desc_commit(&info->desc_info[i]); 978} 979 980static int rocker_dma_ring_bufs_alloc(struct rocker *rocker, 981 struct rocker_dma_ring_info *info, 982 int direction, size_t buf_size) 983{ 984 struct pci_dev *pdev = rocker->pdev; 985 int i; 986 int err; 987 988 for (i = 0; i < info->size; i++) { 989 struct rocker_desc_info *desc_info = &info->desc_info[i]; 990 struct rocker_desc *desc = &info->desc[i]; 991 dma_addr_t dma_handle; 992 char *buf; 993 994 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA); 995 if (!buf) { 996 err = -ENOMEM; 997 goto rollback; 998 } 999 1000 dma_handle = pci_map_single(pdev, buf, buf_size, direction); 1001 if (pci_dma_mapping_error(pdev, dma_handle)) { 1002 kfree(buf); 1003 err = -EIO; 1004 goto rollback; 1005 } 1006 1007 desc_info->data = buf; 1008 desc_info->data_size = buf_size; 1009 dma_unmap_addr_set(desc_info, mapaddr, dma_handle); 1010 1011 desc->buf_addr = dma_handle; 1012 desc->buf_size = buf_size; 1013 } 1014 return 0; 1015 1016rollback: 1017 for (i--; i >= 0; i--) { 1018 struct rocker_desc_info *desc_info = &info->desc_info[i]; 1019 1020 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr), 1021 desc_info->data_size, direction); 1022 kfree(desc_info->data); 1023 } 1024 return err; 1025} 1026 1027static void rocker_dma_ring_bufs_free(struct rocker *rocker, 1028 struct rocker_dma_ring_info *info, 1029 int direction) 1030{ 1031 struct pci_dev *pdev = rocker->pdev; 1032 int i; 1033 1034 for (i = 0; i < info->size; i++) { 1035 struct rocker_desc_info *desc_info = &info->desc_info[i]; 1036 struct rocker_desc *desc = &info->desc[i]; 1037 1038 desc->buf_addr = 0; 1039 desc->buf_size = 0; 1040 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr), 1041 desc_info->data_size, direction); 1042 kfree(desc_info->data); 1043 } 1044} 1045 1046static int rocker_dma_rings_init(struct rocker *rocker) 1047{ 1048 struct pci_dev *pdev = rocker->pdev; 1049 int err; 1050 1051 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD, 1052 ROCKER_DMA_CMD_DEFAULT_SIZE, 1053 &rocker->cmd_ring); 1054 if (err) { 1055 dev_err(&pdev->dev, "failed to create command dma ring\n"); 1056 return err; 1057 } 1058 1059 spin_lock_init(&rocker->cmd_ring_lock); 1060 1061 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring, 1062 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE); 1063 if (err) { 1064 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n"); 1065 goto err_dma_cmd_ring_bufs_alloc; 1066 } 1067 1068 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT, 1069 ROCKER_DMA_EVENT_DEFAULT_SIZE, 1070 &rocker->event_ring); 1071 if (err) { 1072 dev_err(&pdev->dev, "failed to create event dma ring\n"); 1073 goto err_dma_event_ring_create; 1074 } 1075 1076 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring, 1077 PCI_DMA_FROMDEVICE, PAGE_SIZE); 1078 if (err) { 1079 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n"); 1080 goto err_dma_event_ring_bufs_alloc; 1081 } 1082 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring); 1083 return 0; 1084 1085err_dma_event_ring_bufs_alloc: 1086 rocker_dma_ring_destroy(rocker, &rocker->event_ring); 1087err_dma_event_ring_create: 1088 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, 1089 PCI_DMA_BIDIRECTIONAL); 1090err_dma_cmd_ring_bufs_alloc: 1091 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); 1092 return err; 1093} 1094 1095static void rocker_dma_rings_fini(struct rocker *rocker) 1096{ 1097 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring, 1098 PCI_DMA_BIDIRECTIONAL); 1099 rocker_dma_ring_destroy(rocker, &rocker->event_ring); 1100 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, 1101 PCI_DMA_BIDIRECTIONAL); 1102 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); 1103} 1104 1105static int rocker_dma_rx_ring_skb_map(struct rocker *rocker, 1106 struct rocker_port *rocker_port, 1107 struct rocker_desc_info *desc_info, 1108 struct sk_buff *skb, size_t buf_len) 1109{ 1110 struct pci_dev *pdev = rocker->pdev; 1111 dma_addr_t dma_handle; 1112 1113 dma_handle = pci_map_single(pdev, skb->data, buf_len, 1114 PCI_DMA_FROMDEVICE); 1115 if (pci_dma_mapping_error(pdev, dma_handle)) 1116 return -EIO; 1117 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle)) 1118 goto tlv_put_failure; 1119 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len)) 1120 goto tlv_put_failure; 1121 return 0; 1122 1123tlv_put_failure: 1124 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE); 1125 desc_info->tlv_size = 0; 1126 return -EMSGSIZE; 1127} 1128 1129static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port) 1130{ 1131 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 1132} 1133 1134static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker, 1135 struct rocker_port *rocker_port, 1136 struct rocker_desc_info *desc_info) 1137{ 1138 struct net_device *dev = rocker_port->dev; 1139 struct sk_buff *skb; 1140 size_t buf_len = rocker_port_rx_buf_len(rocker_port); 1141 int err; 1142 1143 /* Ensure that hw will see tlv_size zero in case of an error. 1144 * That tells hw to use another descriptor. 1145 */ 1146 rocker_desc_cookie_ptr_set(desc_info, NULL); 1147 desc_info->tlv_size = 0; 1148 1149 skb = netdev_alloc_skb_ip_align(dev, buf_len); 1150 if (!skb) 1151 return -ENOMEM; 1152 err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info, 1153 skb, buf_len); 1154 if (err) { 1155 dev_kfree_skb_any(skb); 1156 return err; 1157 } 1158 rocker_desc_cookie_ptr_set(desc_info, skb); 1159 return 0; 1160} 1161 1162static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker, 1163 struct rocker_tlv **attrs) 1164{ 1165 struct pci_dev *pdev = rocker->pdev; 1166 dma_addr_t dma_handle; 1167 size_t len; 1168 1169 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] || 1170 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]) 1171 return; 1172 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]); 1173 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]); 1174 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE); 1175} 1176 1177static void rocker_dma_rx_ring_skb_free(struct rocker *rocker, 1178 struct rocker_desc_info *desc_info) 1179{ 1180 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; 1181 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); 1182 1183 if (!skb) 1184 return; 1185 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); 1186 rocker_dma_rx_ring_skb_unmap(rocker, attrs); 1187 dev_kfree_skb_any(skb); 1188} 1189 1190static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker, 1191 struct rocker_port *rocker_port) 1192{ 1193 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; 1194 int i; 1195 int err; 1196 1197 for (i = 0; i < rx_ring->size; i++) { 1198 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, 1199 &rx_ring->desc_info[i]); 1200 if (err) 1201 goto rollback; 1202 } 1203 return 0; 1204 1205rollback: 1206 for (i--; i >= 0; i--) 1207 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); 1208 return err; 1209} 1210 1211static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker, 1212 struct rocker_port *rocker_port) 1213{ 1214 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; 1215 int i; 1216 1217 for (i = 0; i < rx_ring->size; i++) 1218 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); 1219} 1220 1221static int rocker_port_dma_rings_init(struct rocker_port *rocker_port) 1222{ 1223 struct rocker *rocker = rocker_port->rocker; 1224 int err; 1225 1226 err = rocker_dma_ring_create(rocker, 1227 ROCKER_DMA_TX(rocker_port->port_number), 1228 ROCKER_DMA_TX_DEFAULT_SIZE, 1229 &rocker_port->tx_ring); 1230 if (err) { 1231 netdev_err(rocker_port->dev, "failed to create tx dma ring\n"); 1232 return err; 1233 } 1234 1235 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring, 1236 PCI_DMA_TODEVICE, 1237 ROCKER_DMA_TX_DESC_SIZE); 1238 if (err) { 1239 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n"); 1240 goto err_dma_tx_ring_bufs_alloc; 1241 } 1242 1243 err = rocker_dma_ring_create(rocker, 1244 ROCKER_DMA_RX(rocker_port->port_number), 1245 ROCKER_DMA_RX_DEFAULT_SIZE, 1246 &rocker_port->rx_ring); 1247 if (err) { 1248 netdev_err(rocker_port->dev, "failed to create rx dma ring\n"); 1249 goto err_dma_rx_ring_create; 1250 } 1251 1252 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring, 1253 PCI_DMA_BIDIRECTIONAL, 1254 ROCKER_DMA_RX_DESC_SIZE); 1255 if (err) { 1256 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n"); 1257 goto err_dma_rx_ring_bufs_alloc; 1258 } 1259 1260 err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port); 1261 if (err) { 1262 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n"); 1263 goto err_dma_rx_ring_skbs_alloc; 1264 } 1265 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring); 1266 1267 return 0; 1268 1269err_dma_rx_ring_skbs_alloc: 1270 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, 1271 PCI_DMA_BIDIRECTIONAL); 1272err_dma_rx_ring_bufs_alloc: 1273 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); 1274err_dma_rx_ring_create: 1275 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, 1276 PCI_DMA_TODEVICE); 1277err_dma_tx_ring_bufs_alloc: 1278 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); 1279 return err; 1280} 1281 1282static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port) 1283{ 1284 struct rocker *rocker = rocker_port->rocker; 1285 1286 rocker_dma_rx_ring_skbs_free(rocker, rocker_port); 1287 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, 1288 PCI_DMA_BIDIRECTIONAL); 1289 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); 1290 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, 1291 PCI_DMA_TODEVICE); 1292 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); 1293} 1294 1295static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable) 1296{ 1297 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE); 1298 1299 if (enable) 1300 val |= 1ULL << rocker_port->pport; 1301 else 1302 val &= ~(1ULL << rocker_port->pport); 1303 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val); 1304} 1305 1306/******************************** 1307 * Interrupt handler and helpers 1308 ********************************/ 1309 1310static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id) 1311{ 1312 struct rocker *rocker = dev_id; 1313 struct rocker_desc_info *desc_info; 1314 struct rocker_wait *wait; 1315 u32 credits = 0; 1316 1317 spin_lock(&rocker->cmd_ring_lock); 1318 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) { 1319 wait = rocker_desc_cookie_ptr_get(desc_info); 1320 if (wait->nowait) { 1321 rocker_desc_gen_clear(desc_info); 1322 rocker_wait_destroy(wait); 1323 } else { 1324 rocker_wait_wake_up(wait); 1325 } 1326 credits++; 1327 } 1328 spin_unlock(&rocker->cmd_ring_lock); 1329 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits); 1330 1331 return IRQ_HANDLED; 1332} 1333 1334static void rocker_port_link_up(struct rocker_port *rocker_port) 1335{ 1336 netif_carrier_on(rocker_port->dev); 1337 netdev_info(rocker_port->dev, "Link is up\n"); 1338} 1339 1340static void rocker_port_link_down(struct rocker_port *rocker_port) 1341{ 1342 netif_carrier_off(rocker_port->dev); 1343 netdev_info(rocker_port->dev, "Link is down\n"); 1344} 1345 1346static int rocker_event_link_change(struct rocker *rocker, 1347 const struct rocker_tlv *info) 1348{ 1349 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1]; 1350 unsigned int port_number; 1351 bool link_up; 1352 struct rocker_port *rocker_port; 1353 1354 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info); 1355 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] || 1356 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]) 1357 return -EIO; 1358 port_number = 1359 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1; 1360 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]); 1361 1362 if (port_number >= rocker->port_count) 1363 return -EINVAL; 1364 1365 rocker_port = rocker->ports[port_number]; 1366 if (netif_carrier_ok(rocker_port->dev) != link_up) { 1367 if (link_up) 1368 rocker_port_link_up(rocker_port); 1369 else 1370 rocker_port_link_down(rocker_port); 1371 } 1372 1373 return 0; 1374} 1375 1376#define ROCKER_OP_FLAG_REMOVE BIT(0) 1377#define ROCKER_OP_FLAG_NOWAIT BIT(1) 1378#define ROCKER_OP_FLAG_LEARNED BIT(2) 1379#define ROCKER_OP_FLAG_REFRESH BIT(3) 1380 1381static int rocker_port_fdb(struct rocker_port *rocker_port, 1382 const unsigned char *addr, 1383 __be16 vlan_id, int flags); 1384 1385static int rocker_event_mac_vlan_seen(struct rocker *rocker, 1386 const struct rocker_tlv *info) 1387{ 1388 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1]; 1389 unsigned int port_number; 1390 struct rocker_port *rocker_port; 1391 unsigned char *addr; 1392 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED; 1393 __be16 vlan_id; 1394 1395 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info); 1396 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] || 1397 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] || 1398 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]) 1399 return -EIO; 1400 port_number = 1401 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1; 1402 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]); 1403 vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]); 1404 1405 if (port_number >= rocker->port_count) 1406 return -EINVAL; 1407 1408 rocker_port = rocker->ports[port_number]; 1409 1410 if (rocker_port->stp_state != BR_STATE_LEARNING && 1411 rocker_port->stp_state != BR_STATE_FORWARDING) 1412 return 0; 1413 1414 return rocker_port_fdb(rocker_port, addr, vlan_id, flags); 1415} 1416 1417static int rocker_event_process(struct rocker *rocker, 1418 struct rocker_desc_info *desc_info) 1419{ 1420 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1]; 1421 struct rocker_tlv *info; 1422 u16 type; 1423 1424 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info); 1425 if (!attrs[ROCKER_TLV_EVENT_TYPE] || 1426 !attrs[ROCKER_TLV_EVENT_INFO]) 1427 return -EIO; 1428 1429 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]); 1430 info = attrs[ROCKER_TLV_EVENT_INFO]; 1431 1432 switch (type) { 1433 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED: 1434 return rocker_event_link_change(rocker, info); 1435 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN: 1436 return rocker_event_mac_vlan_seen(rocker, info); 1437 } 1438 1439 return -EOPNOTSUPP; 1440} 1441 1442static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id) 1443{ 1444 struct rocker *rocker = dev_id; 1445 struct pci_dev *pdev = rocker->pdev; 1446 struct rocker_desc_info *desc_info; 1447 u32 credits = 0; 1448 int err; 1449 1450 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) { 1451 err = rocker_desc_err(desc_info); 1452 if (err) { 1453 dev_err(&pdev->dev, "event desc received with err %d\n", 1454 err); 1455 } else { 1456 err = rocker_event_process(rocker, desc_info); 1457 if (err) 1458 dev_err(&pdev->dev, "event processing failed with err %d\n", 1459 err); 1460 } 1461 rocker_desc_gen_clear(desc_info); 1462 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info); 1463 credits++; 1464 } 1465 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits); 1466 1467 return IRQ_HANDLED; 1468} 1469 1470static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id) 1471{ 1472 struct rocker_port *rocker_port = dev_id; 1473 1474 napi_schedule(&rocker_port->napi_tx); 1475 return IRQ_HANDLED; 1476} 1477 1478static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id) 1479{ 1480 struct rocker_port *rocker_port = dev_id; 1481 1482 napi_schedule(&rocker_port->napi_rx); 1483 return IRQ_HANDLED; 1484} 1485 1486/******************** 1487 * Command interface 1488 ********************/ 1489 1490typedef int (*rocker_cmd_cb_t)(struct rocker *rocker, 1491 struct rocker_port *rocker_port, 1492 struct rocker_desc_info *desc_info, 1493 void *priv); 1494 1495static int rocker_cmd_exec(struct rocker *rocker, 1496 struct rocker_port *rocker_port, 1497 rocker_cmd_cb_t prepare, void *prepare_priv, 1498 rocker_cmd_cb_t process, void *process_priv, 1499 bool nowait) 1500{ 1501 struct rocker_desc_info *desc_info; 1502 struct rocker_wait *wait; 1503 unsigned long flags; 1504 int err; 1505 1506 wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL); 1507 if (!wait) 1508 return -ENOMEM; 1509 wait->nowait = nowait; 1510 1511 spin_lock_irqsave(&rocker->cmd_ring_lock, flags); 1512 desc_info = rocker_desc_head_get(&rocker->cmd_ring); 1513 if (!desc_info) { 1514 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags); 1515 err = -EAGAIN; 1516 goto out; 1517 } 1518 err = prepare(rocker, rocker_port, desc_info, prepare_priv); 1519 if (err) { 1520 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags); 1521 goto out; 1522 } 1523 rocker_desc_cookie_ptr_set(desc_info, wait); 1524 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info); 1525 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags); 1526 1527 if (nowait) 1528 return 0; 1529 1530 if (!rocker_wait_event_timeout(wait, HZ / 10)) 1531 return -EIO; 1532 1533 err = rocker_desc_err(desc_info); 1534 if (err) 1535 return err; 1536 1537 if (process) 1538 err = process(rocker, rocker_port, desc_info, process_priv); 1539 1540 rocker_desc_gen_clear(desc_info); 1541out: 1542 rocker_wait_destroy(wait); 1543 return err; 1544} 1545 1546static int 1547rocker_cmd_get_port_settings_prep(struct rocker *rocker, 1548 struct rocker_port *rocker_port, 1549 struct rocker_desc_info *desc_info, 1550 void *priv) 1551{ 1552 struct rocker_tlv *cmd_info; 1553 1554 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, 1555 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS)) 1556 return -EMSGSIZE; 1557 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 1558 if (!cmd_info) 1559 return -EMSGSIZE; 1560 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, 1561 rocker_port->pport)) 1562 return -EMSGSIZE; 1563 rocker_tlv_nest_end(desc_info, cmd_info); 1564 return 0; 1565} 1566 1567static int 1568rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker, 1569 struct rocker_port *rocker_port, 1570 struct rocker_desc_info *desc_info, 1571 void *priv) 1572{ 1573 struct ethtool_cmd *ecmd = priv; 1574 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; 1575 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; 1576 u32 speed; 1577 u8 duplex; 1578 u8 autoneg; 1579 1580 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); 1581 if (!attrs[ROCKER_TLV_CMD_INFO]) 1582 return -EIO; 1583 1584 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, 1585 attrs[ROCKER_TLV_CMD_INFO]); 1586 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] || 1587 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] || 1588 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]) 1589 return -EIO; 1590 1591 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]); 1592 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]); 1593 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]); 1594 1595 ecmd->transceiver = XCVR_INTERNAL; 1596 ecmd->supported = SUPPORTED_TP; 1597 ecmd->phy_address = 0xff; 1598 ecmd->port = PORT_TP; 1599 ethtool_cmd_speed_set(ecmd, speed); 1600 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF; 1601 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE; 1602 1603 return 0; 1604} 1605 1606static int 1607rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker, 1608 struct rocker_port *rocker_port, 1609 struct rocker_desc_info *desc_info, 1610 void *priv) 1611{ 1612 unsigned char *macaddr = priv; 1613 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; 1614 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; 1615 struct rocker_tlv *attr; 1616 1617 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); 1618 if (!attrs[ROCKER_TLV_CMD_INFO]) 1619 return -EIO; 1620 1621 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, 1622 attrs[ROCKER_TLV_CMD_INFO]); 1623 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]; 1624 if (!attr) 1625 return -EIO; 1626 1627 if (rocker_tlv_len(attr) != ETH_ALEN) 1628 return -EINVAL; 1629 1630 ether_addr_copy(macaddr, rocker_tlv_data(attr)); 1631 return 0; 1632} 1633 1634struct port_name { 1635 char *buf; 1636 size_t len; 1637}; 1638 1639static int 1640rocker_cmd_get_port_settings_phys_name_proc(struct rocker *rocker, 1641 struct rocker_port *rocker_port, 1642 struct rocker_desc_info *desc_info, 1643 void *priv) 1644{ 1645 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; 1646 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; 1647 struct port_name *name = priv; 1648 struct rocker_tlv *attr; 1649 size_t i, j, len; 1650 char *str; 1651 1652 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); 1653 if (!attrs[ROCKER_TLV_CMD_INFO]) 1654 return -EIO; 1655 1656 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, 1657 attrs[ROCKER_TLV_CMD_INFO]); 1658 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME]; 1659 if (!attr) 1660 return -EIO; 1661 1662 len = min_t(size_t, rocker_tlv_len(attr), name->len); 1663 str = rocker_tlv_data(attr); 1664 1665 /* make sure name only contains alphanumeric characters */ 1666 for (i = j = 0; i < len; ++i) { 1667 if (isalnum(str[i])) { 1668 name->buf[j] = str[i]; 1669 j++; 1670 } 1671 } 1672 1673 if (j == 0) 1674 return -EIO; 1675 1676 name->buf[j] = '\0'; 1677 1678 return 0; 1679} 1680 1681static int 1682rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker, 1683 struct rocker_port *rocker_port, 1684 struct rocker_desc_info *desc_info, 1685 void *priv) 1686{ 1687 struct ethtool_cmd *ecmd = priv; 1688 struct rocker_tlv *cmd_info; 1689 1690 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, 1691 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) 1692 return -EMSGSIZE; 1693 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 1694 if (!cmd_info) 1695 return -EMSGSIZE; 1696 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, 1697 rocker_port->pport)) 1698 return -EMSGSIZE; 1699 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, 1700 ethtool_cmd_speed(ecmd))) 1701 return -EMSGSIZE; 1702 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, 1703 ecmd->duplex)) 1704 return -EMSGSIZE; 1705 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, 1706 ecmd->autoneg)) 1707 return -EMSGSIZE; 1708 rocker_tlv_nest_end(desc_info, cmd_info); 1709 return 0; 1710} 1711 1712static int 1713rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker, 1714 struct rocker_port *rocker_port, 1715 struct rocker_desc_info *desc_info, 1716 void *priv) 1717{ 1718 unsigned char *macaddr = priv; 1719 struct rocker_tlv *cmd_info; 1720 1721 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, 1722 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) 1723 return -EMSGSIZE; 1724 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 1725 if (!cmd_info) 1726 return -EMSGSIZE; 1727 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, 1728 rocker_port->pport)) 1729 return -EMSGSIZE; 1730 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, 1731 ETH_ALEN, macaddr)) 1732 return -EMSGSIZE; 1733 rocker_tlv_nest_end(desc_info, cmd_info); 1734 return 0; 1735} 1736 1737static int 1738rocker_cmd_set_port_learning_prep(struct rocker *rocker, 1739 struct rocker_port *rocker_port, 1740 struct rocker_desc_info *desc_info, 1741 void *priv) 1742{ 1743 struct rocker_tlv *cmd_info; 1744 1745 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, 1746 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) 1747 return -EMSGSIZE; 1748 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 1749 if (!cmd_info) 1750 return -EMSGSIZE; 1751 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, 1752 rocker_port->pport)) 1753 return -EMSGSIZE; 1754 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, 1755 !!(rocker_port->brport_flags & BR_LEARNING))) 1756 return -EMSGSIZE; 1757 rocker_tlv_nest_end(desc_info, cmd_info); 1758 return 0; 1759} 1760 1761static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port, 1762 struct ethtool_cmd *ecmd) 1763{ 1764 return rocker_cmd_exec(rocker_port->rocker, rocker_port, 1765 rocker_cmd_get_port_settings_prep, NULL, 1766 rocker_cmd_get_port_settings_ethtool_proc, 1767 ecmd, false); 1768} 1769 1770static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port, 1771 unsigned char *macaddr) 1772{ 1773 return rocker_cmd_exec(rocker_port->rocker, rocker_port, 1774 rocker_cmd_get_port_settings_prep, NULL, 1775 rocker_cmd_get_port_settings_macaddr_proc, 1776 macaddr, false); 1777} 1778 1779static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port, 1780 struct ethtool_cmd *ecmd) 1781{ 1782 return rocker_cmd_exec(rocker_port->rocker, rocker_port, 1783 rocker_cmd_set_port_settings_ethtool_prep, 1784 ecmd, NULL, NULL, false); 1785} 1786 1787static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port, 1788 unsigned char *macaddr) 1789{ 1790 return rocker_cmd_exec(rocker_port->rocker, rocker_port, 1791 rocker_cmd_set_port_settings_macaddr_prep, 1792 macaddr, NULL, NULL, false); 1793} 1794 1795static int rocker_port_set_learning(struct rocker_port *rocker_port) 1796{ 1797 return rocker_cmd_exec(rocker_port->rocker, rocker_port, 1798 rocker_cmd_set_port_learning_prep, 1799 NULL, NULL, NULL, false); 1800} 1801 1802static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info, 1803 struct rocker_flow_tbl_entry *entry) 1804{ 1805 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, 1806 entry->key.ig_port.in_pport)) 1807 return -EMSGSIZE; 1808 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, 1809 entry->key.ig_port.in_pport_mask)) 1810 return -EMSGSIZE; 1811 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, 1812 entry->key.ig_port.goto_tbl)) 1813 return -EMSGSIZE; 1814 1815 return 0; 1816} 1817 1818static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info, 1819 struct rocker_flow_tbl_entry *entry) 1820{ 1821 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, 1822 entry->key.vlan.in_pport)) 1823 return -EMSGSIZE; 1824 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, 1825 entry->key.vlan.vlan_id)) 1826 return -EMSGSIZE; 1827 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, 1828 entry->key.vlan.vlan_id_mask)) 1829 return -EMSGSIZE; 1830 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, 1831 entry->key.vlan.goto_tbl)) 1832 return -EMSGSIZE; 1833 if (entry->key.vlan.untagged && 1834 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID, 1835 entry->key.vlan.new_vlan_id)) 1836 return -EMSGSIZE; 1837 1838 return 0; 1839} 1840 1841static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info, 1842 struct rocker_flow_tbl_entry *entry) 1843{ 1844 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, 1845 entry->key.term_mac.in_pport)) 1846 return -EMSGSIZE; 1847 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, 1848 entry->key.term_mac.in_pport_mask)) 1849 return -EMSGSIZE; 1850 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, 1851 entry->key.term_mac.eth_type)) 1852 return -EMSGSIZE; 1853 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, 1854 ETH_ALEN, entry->key.term_mac.eth_dst)) 1855 return -EMSGSIZE; 1856 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, 1857 ETH_ALEN, entry->key.term_mac.eth_dst_mask)) 1858 return -EMSGSIZE; 1859 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, 1860 entry->key.term_mac.vlan_id)) 1861 return -EMSGSIZE; 1862 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, 1863 entry->key.term_mac.vlan_id_mask)) 1864 return -EMSGSIZE; 1865 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, 1866 entry->key.term_mac.goto_tbl)) 1867 return -EMSGSIZE; 1868 if (entry->key.term_mac.copy_to_cpu && 1869 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION, 1870 entry->key.term_mac.copy_to_cpu)) 1871 return -EMSGSIZE; 1872 1873 return 0; 1874} 1875 1876static int 1877rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info, 1878 struct rocker_flow_tbl_entry *entry) 1879{ 1880 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, 1881 entry->key.ucast_routing.eth_type)) 1882 return -EMSGSIZE; 1883 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP, 1884 entry->key.ucast_routing.dst4)) 1885 return -EMSGSIZE; 1886 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK, 1887 entry->key.ucast_routing.dst4_mask)) 1888 return -EMSGSIZE; 1889 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, 1890 entry->key.ucast_routing.goto_tbl)) 1891 return -EMSGSIZE; 1892 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, 1893 entry->key.ucast_routing.group_id)) 1894 return -EMSGSIZE; 1895 1896 return 0; 1897} 1898 1899static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info, 1900 struct rocker_flow_tbl_entry *entry) 1901{ 1902 if (entry->key.bridge.has_eth_dst && 1903 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, 1904 ETH_ALEN, entry->key.bridge.eth_dst)) 1905 return -EMSGSIZE; 1906 if (entry->key.bridge.has_eth_dst_mask && 1907 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, 1908 ETH_ALEN, entry->key.bridge.eth_dst_mask)) 1909 return -EMSGSIZE; 1910 if (entry->key.bridge.vlan_id && 1911 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, 1912 entry->key.bridge.vlan_id)) 1913 return -EMSGSIZE; 1914 if (entry->key.bridge.tunnel_id && 1915 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID, 1916 entry->key.bridge.tunnel_id)) 1917 return -EMSGSIZE; 1918 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, 1919 entry->key.bridge.goto_tbl)) 1920 return -EMSGSIZE; 1921 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, 1922 entry->key.bridge.group_id)) 1923 return -EMSGSIZE; 1924 if (entry->key.bridge.copy_to_cpu && 1925 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION, 1926 entry->key.bridge.copy_to_cpu)) 1927 return -EMSGSIZE; 1928 1929 return 0; 1930} 1931 1932static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info, 1933 struct rocker_flow_tbl_entry *entry) 1934{ 1935 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, 1936 entry->key.acl.in_pport)) 1937 return -EMSGSIZE; 1938 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, 1939 entry->key.acl.in_pport_mask)) 1940 return -EMSGSIZE; 1941 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, 1942 ETH_ALEN, entry->key.acl.eth_src)) 1943 return -EMSGSIZE; 1944 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK, 1945 ETH_ALEN, entry->key.acl.eth_src_mask)) 1946 return -EMSGSIZE; 1947 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, 1948 ETH_ALEN, entry->key.acl.eth_dst)) 1949 return -EMSGSIZE; 1950 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, 1951 ETH_ALEN, entry->key.acl.eth_dst_mask)) 1952 return -EMSGSIZE; 1953 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, 1954 entry->key.acl.eth_type)) 1955 return -EMSGSIZE; 1956 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, 1957 entry->key.acl.vlan_id)) 1958 return -EMSGSIZE; 1959 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, 1960 entry->key.acl.vlan_id_mask)) 1961 return -EMSGSIZE; 1962 1963 switch (ntohs(entry->key.acl.eth_type)) { 1964 case ETH_P_IP: 1965 case ETH_P_IPV6: 1966 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO, 1967 entry->key.acl.ip_proto)) 1968 return -EMSGSIZE; 1969 if (rocker_tlv_put_u8(desc_info, 1970 ROCKER_TLV_OF_DPA_IP_PROTO_MASK, 1971 entry->key.acl.ip_proto_mask)) 1972 return -EMSGSIZE; 1973 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP, 1974 entry->key.acl.ip_tos & 0x3f)) 1975 return -EMSGSIZE; 1976 if (rocker_tlv_put_u8(desc_info, 1977 ROCKER_TLV_OF_DPA_IP_DSCP_MASK, 1978 entry->key.acl.ip_tos_mask & 0x3f)) 1979 return -EMSGSIZE; 1980 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN, 1981 (entry->key.acl.ip_tos & 0xc0) >> 6)) 1982 return -EMSGSIZE; 1983 if (rocker_tlv_put_u8(desc_info, 1984 ROCKER_TLV_OF_DPA_IP_ECN_MASK, 1985 (entry->key.acl.ip_tos_mask & 0xc0) >> 6)) 1986 return -EMSGSIZE; 1987 break; 1988 } 1989 1990 if (entry->key.acl.group_id != ROCKER_GROUP_NONE && 1991 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, 1992 entry->key.acl.group_id)) 1993 return -EMSGSIZE; 1994 1995 return 0; 1996} 1997 1998static int rocker_cmd_flow_tbl_add(struct rocker *rocker, 1999 struct rocker_port *rocker_port, 2000 struct rocker_desc_info *desc_info, 2001 void *priv) 2002{ 2003 struct rocker_flow_tbl_entry *entry = priv; 2004 struct rocker_tlv *cmd_info; 2005 int err = 0; 2006 2007 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) 2008 return -EMSGSIZE; 2009 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 2010 if (!cmd_info) 2011 return -EMSGSIZE; 2012 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID, 2013 entry->key.tbl_id)) 2014 return -EMSGSIZE; 2015 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY, 2016 entry->key.priority)) 2017 return -EMSGSIZE; 2018 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0)) 2019 return -EMSGSIZE; 2020 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE, 2021 entry->cookie)) 2022 return -EMSGSIZE; 2023 2024 switch (entry->key.tbl_id) { 2025 case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT: 2026 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry); 2027 break; 2028 case ROCKER_OF_DPA_TABLE_ID_VLAN: 2029 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry); 2030 break; 2031 case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC: 2032 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry); 2033 break; 2034 case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING: 2035 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry); 2036 break; 2037 case ROCKER_OF_DPA_TABLE_ID_BRIDGING: 2038 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry); 2039 break; 2040 case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY: 2041 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry); 2042 break; 2043 default: 2044 err = -ENOTSUPP; 2045 break; 2046 } 2047 2048 if (err) 2049 return err; 2050 2051 rocker_tlv_nest_end(desc_info, cmd_info); 2052 2053 return 0; 2054} 2055 2056static int rocker_cmd_flow_tbl_del(struct rocker *rocker, 2057 struct rocker_port *rocker_port, 2058 struct rocker_desc_info *desc_info, 2059 void *priv) 2060{ 2061 const struct rocker_flow_tbl_entry *entry = priv; 2062 struct rocker_tlv *cmd_info; 2063 2064 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) 2065 return -EMSGSIZE; 2066 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 2067 if (!cmd_info) 2068 return -EMSGSIZE; 2069 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE, 2070 entry->cookie)) 2071 return -EMSGSIZE; 2072 rocker_tlv_nest_end(desc_info, cmd_info); 2073 2074 return 0; 2075} 2076 2077static int 2078rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info, 2079 struct rocker_group_tbl_entry *entry) 2080{ 2081 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT, 2082 ROCKER_GROUP_PORT_GET(entry->group_id))) 2083 return -EMSGSIZE; 2084 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN, 2085 entry->l2_interface.pop_vlan)) 2086 return -EMSGSIZE; 2087 2088 return 0; 2089} 2090 2091static int 2092rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info, 2093 struct rocker_group_tbl_entry *entry) 2094{ 2095 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER, 2096 entry->l2_rewrite.group_id)) 2097 return -EMSGSIZE; 2098 if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) && 2099 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, 2100 ETH_ALEN, entry->l2_rewrite.eth_src)) 2101 return -EMSGSIZE; 2102 if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) && 2103 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, 2104 ETH_ALEN, entry->l2_rewrite.eth_dst)) 2105 return -EMSGSIZE; 2106 if (entry->l2_rewrite.vlan_id && 2107 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, 2108 entry->l2_rewrite.vlan_id)) 2109 return -EMSGSIZE; 2110 2111 return 0; 2112} 2113 2114static int 2115rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info, 2116 struct rocker_group_tbl_entry *entry) 2117{ 2118 int i; 2119 struct rocker_tlv *group_ids; 2120 2121 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT, 2122 entry->group_count)) 2123 return -EMSGSIZE; 2124 2125 group_ids = rocker_tlv_nest_start(desc_info, 2126 ROCKER_TLV_OF_DPA_GROUP_IDS); 2127 if (!group_ids) 2128 return -EMSGSIZE; 2129 2130 for (i = 0; i < entry->group_count; i++) 2131 /* Note TLV array is 1-based */ 2132 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i])) 2133 return -EMSGSIZE; 2134 2135 rocker_tlv_nest_end(desc_info, group_ids); 2136 2137 return 0; 2138} 2139 2140static int 2141rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info, 2142 struct rocker_group_tbl_entry *entry) 2143{ 2144 if (!is_zero_ether_addr(entry->l3_unicast.eth_src) && 2145 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, 2146 ETH_ALEN, entry->l3_unicast.eth_src)) 2147 return -EMSGSIZE; 2148 if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) && 2149 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, 2150 ETH_ALEN, entry->l3_unicast.eth_dst)) 2151 return -EMSGSIZE; 2152 if (entry->l3_unicast.vlan_id && 2153 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, 2154 entry->l3_unicast.vlan_id)) 2155 return -EMSGSIZE; 2156 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK, 2157 entry->l3_unicast.ttl_check)) 2158 return -EMSGSIZE; 2159 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER, 2160 entry->l3_unicast.group_id)) 2161 return -EMSGSIZE; 2162 2163 return 0; 2164} 2165 2166static int rocker_cmd_group_tbl_add(struct rocker *rocker, 2167 struct rocker_port *rocker_port, 2168 struct rocker_desc_info *desc_info, 2169 void *priv) 2170{ 2171 struct rocker_group_tbl_entry *entry = priv; 2172 struct rocker_tlv *cmd_info; 2173 int err = 0; 2174 2175 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) 2176 return -EMSGSIZE; 2177 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 2178 if (!cmd_info) 2179 return -EMSGSIZE; 2180 2181 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, 2182 entry->group_id)) 2183 return -EMSGSIZE; 2184 2185 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) { 2186 case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE: 2187 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry); 2188 break; 2189 case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE: 2190 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry); 2191 break; 2192 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD: 2193 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST: 2194 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry); 2195 break; 2196 case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST: 2197 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry); 2198 break; 2199 default: 2200 err = -ENOTSUPP; 2201 break; 2202 } 2203 2204 if (err) 2205 return err; 2206 2207 rocker_tlv_nest_end(desc_info, cmd_info); 2208 2209 return 0; 2210} 2211 2212static int rocker_cmd_group_tbl_del(struct rocker *rocker, 2213 struct rocker_port *rocker_port, 2214 struct rocker_desc_info *desc_info, 2215 void *priv) 2216{ 2217 const struct rocker_group_tbl_entry *entry = priv; 2218 struct rocker_tlv *cmd_info; 2219 2220 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) 2221 return -EMSGSIZE; 2222 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 2223 if (!cmd_info) 2224 return -EMSGSIZE; 2225 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, 2226 entry->group_id)) 2227 return -EMSGSIZE; 2228 rocker_tlv_nest_end(desc_info, cmd_info); 2229 2230 return 0; 2231} 2232 2233/*************************************************** 2234 * Flow, group, FDB, internal VLAN and neigh tables 2235 ***************************************************/ 2236 2237static int rocker_init_tbls(struct rocker *rocker) 2238{ 2239 hash_init(rocker->flow_tbl); 2240 spin_lock_init(&rocker->flow_tbl_lock); 2241 2242 hash_init(rocker->group_tbl); 2243 spin_lock_init(&rocker->group_tbl_lock); 2244 2245 hash_init(rocker->fdb_tbl); 2246 spin_lock_init(&rocker->fdb_tbl_lock); 2247 2248 hash_init(rocker->internal_vlan_tbl); 2249 spin_lock_init(&rocker->internal_vlan_tbl_lock); 2250 2251 hash_init(rocker->neigh_tbl); 2252 spin_lock_init(&rocker->neigh_tbl_lock); 2253 2254 return 0; 2255} 2256 2257static void rocker_free_tbls(struct rocker *rocker) 2258{ 2259 unsigned long flags; 2260 struct rocker_flow_tbl_entry *flow_entry; 2261 struct rocker_group_tbl_entry *group_entry; 2262 struct rocker_fdb_tbl_entry *fdb_entry; 2263 struct rocker_internal_vlan_tbl_entry *internal_vlan_entry; 2264 struct rocker_neigh_tbl_entry *neigh_entry; 2265 struct hlist_node *tmp; 2266 int bkt; 2267 2268 spin_lock_irqsave(&rocker->flow_tbl_lock, flags); 2269 hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry) 2270 hash_del(&flow_entry->entry); 2271 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); 2272 2273 spin_lock_irqsave(&rocker->group_tbl_lock, flags); 2274 hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry) 2275 hash_del(&group_entry->entry); 2276 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); 2277 2278 spin_lock_irqsave(&rocker->fdb_tbl_lock, flags); 2279 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry) 2280 hash_del(&fdb_entry->entry); 2281 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags); 2282 2283 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags); 2284 hash_for_each_safe(rocker->internal_vlan_tbl, bkt, 2285 tmp, internal_vlan_entry, entry) 2286 hash_del(&internal_vlan_entry->entry); 2287 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags); 2288 2289 spin_lock_irqsave(&rocker->neigh_tbl_lock, flags); 2290 hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry) 2291 hash_del(&neigh_entry->entry); 2292 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags); 2293} 2294 2295static struct rocker_flow_tbl_entry * 2296rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match) 2297{ 2298 struct rocker_flow_tbl_entry *found; 2299 size_t key_len = match->key_len ? match->key_len : sizeof(found->key); 2300 2301 hash_for_each_possible(rocker->flow_tbl, found, 2302 entry, match->key_crc32) { 2303 if (memcmp(&found->key, &match->key, key_len) == 0) 2304 return found; 2305 } 2306 2307 return NULL; 2308} 2309 2310static int rocker_flow_tbl_add(struct rocker_port *rocker_port, 2311 struct rocker_flow_tbl_entry *match, 2312 bool nowait) 2313{ 2314 struct rocker *rocker = rocker_port->rocker; 2315 struct rocker_flow_tbl_entry *found; 2316 size_t key_len = match->key_len ? match->key_len : sizeof(found->key); 2317 unsigned long flags; 2318 2319 match->key_crc32 = crc32(~0, &match->key, key_len); 2320 2321 spin_lock_irqsave(&rocker->flow_tbl_lock, flags); 2322 2323 found = rocker_flow_tbl_find(rocker, match); 2324 2325 if (found) { 2326 match->cookie = found->cookie; 2327 hash_del(&found->entry); 2328 kfree(found); 2329 found = match; 2330 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD; 2331 } else { 2332 found = match; 2333 found->cookie = rocker->flow_tbl_next_cookie++; 2334 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD; 2335 } 2336 2337 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32); 2338 2339 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); 2340 2341 return rocker_cmd_exec(rocker, rocker_port, 2342 rocker_cmd_flow_tbl_add, 2343 found, NULL, NULL, nowait); 2344} 2345 2346static int rocker_flow_tbl_del(struct rocker_port *rocker_port, 2347 struct rocker_flow_tbl_entry *match, 2348 bool nowait) 2349{ 2350 struct rocker *rocker = rocker_port->rocker; 2351 struct rocker_flow_tbl_entry *found; 2352 size_t key_len = match->key_len ? match->key_len : sizeof(found->key); 2353 unsigned long flags; 2354 int err = 0; 2355 2356 match->key_crc32 = crc32(~0, &match->key, key_len); 2357 2358 spin_lock_irqsave(&rocker->flow_tbl_lock, flags); 2359 2360 found = rocker_flow_tbl_find(rocker, match); 2361 2362 if (found) { 2363 hash_del(&found->entry); 2364 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL; 2365 } 2366 2367 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); 2368 2369 kfree(match); 2370 2371 if (found) { 2372 err = rocker_cmd_exec(rocker, rocker_port, 2373 rocker_cmd_flow_tbl_del, 2374 found, NULL, NULL, nowait); 2375 kfree(found); 2376 } 2377 2378 return err; 2379} 2380 2381static gfp_t rocker_op_flags_gfp(int flags) 2382{ 2383 return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL; 2384} 2385 2386static int rocker_flow_tbl_do(struct rocker_port *rocker_port, 2387 int flags, struct rocker_flow_tbl_entry *entry) 2388{ 2389 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT; 2390 2391 if (flags & ROCKER_OP_FLAG_REMOVE) 2392 return rocker_flow_tbl_del(rocker_port, entry, nowait); 2393 else 2394 return rocker_flow_tbl_add(rocker_port, entry, nowait); 2395} 2396 2397static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port, 2398 int flags, u32 in_pport, u32 in_pport_mask, 2399 enum rocker_of_dpa_table_id goto_tbl) 2400{ 2401 struct rocker_flow_tbl_entry *entry; 2402 2403 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2404 if (!entry) 2405 return -ENOMEM; 2406 2407 entry->key.priority = ROCKER_PRIORITY_IG_PORT; 2408 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT; 2409 entry->key.ig_port.in_pport = in_pport; 2410 entry->key.ig_port.in_pport_mask = in_pport_mask; 2411 entry->key.ig_port.goto_tbl = goto_tbl; 2412 2413 return rocker_flow_tbl_do(rocker_port, flags, entry); 2414} 2415 2416static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port, 2417 int flags, u32 in_pport, 2418 __be16 vlan_id, __be16 vlan_id_mask, 2419 enum rocker_of_dpa_table_id goto_tbl, 2420 bool untagged, __be16 new_vlan_id) 2421{ 2422 struct rocker_flow_tbl_entry *entry; 2423 2424 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2425 if (!entry) 2426 return -ENOMEM; 2427 2428 entry->key.priority = ROCKER_PRIORITY_VLAN; 2429 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN; 2430 entry->key.vlan.in_pport = in_pport; 2431 entry->key.vlan.vlan_id = vlan_id; 2432 entry->key.vlan.vlan_id_mask = vlan_id_mask; 2433 entry->key.vlan.goto_tbl = goto_tbl; 2434 2435 entry->key.vlan.untagged = untagged; 2436 entry->key.vlan.new_vlan_id = new_vlan_id; 2437 2438 return rocker_flow_tbl_do(rocker_port, flags, entry); 2439} 2440 2441static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port, 2442 u32 in_pport, u32 in_pport_mask, 2443 __be16 eth_type, const u8 *eth_dst, 2444 const u8 *eth_dst_mask, __be16 vlan_id, 2445 __be16 vlan_id_mask, bool copy_to_cpu, 2446 int flags) 2447{ 2448 struct rocker_flow_tbl_entry *entry; 2449 2450 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2451 if (!entry) 2452 return -ENOMEM; 2453 2454 if (is_multicast_ether_addr(eth_dst)) { 2455 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST; 2456 entry->key.term_mac.goto_tbl = 2457 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING; 2458 } else { 2459 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST; 2460 entry->key.term_mac.goto_tbl = 2461 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING; 2462 } 2463 2464 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC; 2465 entry->key.term_mac.in_pport = in_pport; 2466 entry->key.term_mac.in_pport_mask = in_pport_mask; 2467 entry->key.term_mac.eth_type = eth_type; 2468 ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst); 2469 ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask); 2470 entry->key.term_mac.vlan_id = vlan_id; 2471 entry->key.term_mac.vlan_id_mask = vlan_id_mask; 2472 entry->key.term_mac.copy_to_cpu = copy_to_cpu; 2473 2474 return rocker_flow_tbl_do(rocker_port, flags, entry); 2475} 2476 2477static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port, 2478 int flags, 2479 const u8 *eth_dst, const u8 *eth_dst_mask, 2480 __be16 vlan_id, u32 tunnel_id, 2481 enum rocker_of_dpa_table_id goto_tbl, 2482 u32 group_id, bool copy_to_cpu) 2483{ 2484 struct rocker_flow_tbl_entry *entry; 2485 u32 priority; 2486 bool vlan_bridging = !!vlan_id; 2487 bool dflt = !eth_dst || (eth_dst && eth_dst_mask); 2488 bool wild = false; 2489 2490 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2491 if (!entry) 2492 return -ENOMEM; 2493 2494 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING; 2495 2496 if (eth_dst) { 2497 entry->key.bridge.has_eth_dst = 1; 2498 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst); 2499 } 2500 if (eth_dst_mask) { 2501 entry->key.bridge.has_eth_dst_mask = 1; 2502 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask); 2503 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN)) 2504 wild = true; 2505 } 2506 2507 priority = ROCKER_PRIORITY_UNKNOWN; 2508 if (vlan_bridging && dflt && wild) 2509 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD; 2510 else if (vlan_bridging && dflt && !wild) 2511 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT; 2512 else if (vlan_bridging && !dflt) 2513 priority = ROCKER_PRIORITY_BRIDGING_VLAN; 2514 else if (!vlan_bridging && dflt && wild) 2515 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD; 2516 else if (!vlan_bridging && dflt && !wild) 2517 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT; 2518 else if (!vlan_bridging && !dflt) 2519 priority = ROCKER_PRIORITY_BRIDGING_TENANT; 2520 2521 entry->key.priority = priority; 2522 entry->key.bridge.vlan_id = vlan_id; 2523 entry->key.bridge.tunnel_id = tunnel_id; 2524 entry->key.bridge.goto_tbl = goto_tbl; 2525 entry->key.bridge.group_id = group_id; 2526 entry->key.bridge.copy_to_cpu = copy_to_cpu; 2527 2528 return rocker_flow_tbl_do(rocker_port, flags, entry); 2529} 2530 2531static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port, 2532 __be16 eth_type, __be32 dst, 2533 __be32 dst_mask, u32 priority, 2534 enum rocker_of_dpa_table_id goto_tbl, 2535 u32 group_id, int flags) 2536{ 2537 struct rocker_flow_tbl_entry *entry; 2538 2539 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2540 if (!entry) 2541 return -ENOMEM; 2542 2543 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING; 2544 entry->key.priority = priority; 2545 entry->key.ucast_routing.eth_type = eth_type; 2546 entry->key.ucast_routing.dst4 = dst; 2547 entry->key.ucast_routing.dst4_mask = dst_mask; 2548 entry->key.ucast_routing.goto_tbl = goto_tbl; 2549 entry->key.ucast_routing.group_id = group_id; 2550 entry->key_len = offsetof(struct rocker_flow_tbl_key, 2551 ucast_routing.group_id); 2552 2553 return rocker_flow_tbl_do(rocker_port, flags, entry); 2554} 2555 2556static int rocker_flow_tbl_acl(struct rocker_port *rocker_port, 2557 int flags, u32 in_pport, 2558 u32 in_pport_mask, 2559 const u8 *eth_src, const u8 *eth_src_mask, 2560 const u8 *eth_dst, const u8 *eth_dst_mask, 2561 __be16 eth_type, 2562 __be16 vlan_id, __be16 vlan_id_mask, 2563 u8 ip_proto, u8 ip_proto_mask, 2564 u8 ip_tos, u8 ip_tos_mask, 2565 u32 group_id) 2566{ 2567 u32 priority; 2568 struct rocker_flow_tbl_entry *entry; 2569 2570 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2571 if (!entry) 2572 return -ENOMEM; 2573 2574 priority = ROCKER_PRIORITY_ACL_NORMAL; 2575 if (eth_dst && eth_dst_mask) { 2576 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0) 2577 priority = ROCKER_PRIORITY_ACL_DFLT; 2578 else if (is_link_local_ether_addr(eth_dst)) 2579 priority = ROCKER_PRIORITY_ACL_CTRL; 2580 } 2581 2582 entry->key.priority = priority; 2583 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; 2584 entry->key.acl.in_pport = in_pport; 2585 entry->key.acl.in_pport_mask = in_pport_mask; 2586 2587 if (eth_src) 2588 ether_addr_copy(entry->key.acl.eth_src, eth_src); 2589 if (eth_src_mask) 2590 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask); 2591 if (eth_dst) 2592 ether_addr_copy(entry->key.acl.eth_dst, eth_dst); 2593 if (eth_dst_mask) 2594 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask); 2595 2596 entry->key.acl.eth_type = eth_type; 2597 entry->key.acl.vlan_id = vlan_id; 2598 entry->key.acl.vlan_id_mask = vlan_id_mask; 2599 entry->key.acl.ip_proto = ip_proto; 2600 entry->key.acl.ip_proto_mask = ip_proto_mask; 2601 entry->key.acl.ip_tos = ip_tos; 2602 entry->key.acl.ip_tos_mask = ip_tos_mask; 2603 entry->key.acl.group_id = group_id; 2604 2605 return rocker_flow_tbl_do(rocker_port, flags, entry); 2606} 2607 2608static struct rocker_group_tbl_entry * 2609rocker_group_tbl_find(struct rocker *rocker, 2610 struct rocker_group_tbl_entry *match) 2611{ 2612 struct rocker_group_tbl_entry *found; 2613 2614 hash_for_each_possible(rocker->group_tbl, found, 2615 entry, match->group_id) { 2616 if (found->group_id == match->group_id) 2617 return found; 2618 } 2619 2620 return NULL; 2621} 2622 2623static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry) 2624{ 2625 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) { 2626 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD: 2627 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST: 2628 kfree(entry->group_ids); 2629 break; 2630 default: 2631 break; 2632 } 2633 kfree(entry); 2634} 2635 2636static int rocker_group_tbl_add(struct rocker_port *rocker_port, 2637 struct rocker_group_tbl_entry *match, 2638 bool nowait) 2639{ 2640 struct rocker *rocker = rocker_port->rocker; 2641 struct rocker_group_tbl_entry *found; 2642 unsigned long flags; 2643 2644 spin_lock_irqsave(&rocker->group_tbl_lock, flags); 2645 2646 found = rocker_group_tbl_find(rocker, match); 2647 2648 if (found) { 2649 hash_del(&found->entry); 2650 rocker_group_tbl_entry_free(found); 2651 found = match; 2652 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD; 2653 } else { 2654 found = match; 2655 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD; 2656 } 2657 2658 hash_add(rocker->group_tbl, &found->entry, found->group_id); 2659 2660 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); 2661 2662 return rocker_cmd_exec(rocker, rocker_port, 2663 rocker_cmd_group_tbl_add, 2664 found, NULL, NULL, nowait); 2665} 2666 2667static int rocker_group_tbl_del(struct rocker_port *rocker_port, 2668 struct rocker_group_tbl_entry *match, 2669 bool nowait) 2670{ 2671 struct rocker *rocker = rocker_port->rocker; 2672 struct rocker_group_tbl_entry *found; 2673 unsigned long flags; 2674 int err = 0; 2675 2676 spin_lock_irqsave(&rocker->group_tbl_lock, flags); 2677 2678 found = rocker_group_tbl_find(rocker, match); 2679 2680 if (found) { 2681 hash_del(&found->entry); 2682 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL; 2683 } 2684 2685 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); 2686 2687 rocker_group_tbl_entry_free(match); 2688 2689 if (found) { 2690 err = rocker_cmd_exec(rocker, rocker_port, 2691 rocker_cmd_group_tbl_del, 2692 found, NULL, NULL, nowait); 2693 rocker_group_tbl_entry_free(found); 2694 } 2695 2696 return err; 2697} 2698 2699static int rocker_group_tbl_do(struct rocker_port *rocker_port, 2700 int flags, struct rocker_group_tbl_entry *entry) 2701{ 2702 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT; 2703 2704 if (flags & ROCKER_OP_FLAG_REMOVE) 2705 return rocker_group_tbl_del(rocker_port, entry, nowait); 2706 else 2707 return rocker_group_tbl_add(rocker_port, entry, nowait); 2708} 2709 2710static int rocker_group_l2_interface(struct rocker_port *rocker_port, 2711 int flags, __be16 vlan_id, 2712 u32 out_pport, int pop_vlan) 2713{ 2714 struct rocker_group_tbl_entry *entry; 2715 2716 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2717 if (!entry) 2718 return -ENOMEM; 2719 2720 entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); 2721 entry->l2_interface.pop_vlan = pop_vlan; 2722 2723 return rocker_group_tbl_do(rocker_port, flags, entry); 2724} 2725 2726static int rocker_group_l2_fan_out(struct rocker_port *rocker_port, 2727 int flags, u8 group_count, 2728 u32 *group_ids, u32 group_id) 2729{ 2730 struct rocker_group_tbl_entry *entry; 2731 2732 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2733 if (!entry) 2734 return -ENOMEM; 2735 2736 entry->group_id = group_id; 2737 entry->group_count = group_count; 2738 2739 entry->group_ids = kcalloc(group_count, sizeof(u32), 2740 rocker_op_flags_gfp(flags)); 2741 if (!entry->group_ids) { 2742 kfree(entry); 2743 return -ENOMEM; 2744 } 2745 memcpy(entry->group_ids, group_ids, group_count * sizeof(u32)); 2746 2747 return rocker_group_tbl_do(rocker_port, flags, entry); 2748} 2749 2750static int rocker_group_l2_flood(struct rocker_port *rocker_port, 2751 int flags, __be16 vlan_id, 2752 u8 group_count, u32 *group_ids, 2753 u32 group_id) 2754{ 2755 return rocker_group_l2_fan_out(rocker_port, flags, 2756 group_count, group_ids, 2757 group_id); 2758} 2759 2760static int rocker_group_l3_unicast(struct rocker_port *rocker_port, 2761 int flags, u32 index, u8 *src_mac, 2762 u8 *dst_mac, __be16 vlan_id, 2763 bool ttl_check, u32 pport) 2764{ 2765 struct rocker_group_tbl_entry *entry; 2766 2767 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2768 if (!entry) 2769 return -ENOMEM; 2770 2771 entry->group_id = ROCKER_GROUP_L3_UNICAST(index); 2772 if (src_mac) 2773 ether_addr_copy(entry->l3_unicast.eth_src, src_mac); 2774 if (dst_mac) 2775 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac); 2776 entry->l3_unicast.vlan_id = vlan_id; 2777 entry->l3_unicast.ttl_check = ttl_check; 2778 entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport); 2779 2780 return rocker_group_tbl_do(rocker_port, flags, entry); 2781} 2782 2783static struct rocker_neigh_tbl_entry * 2784 rocker_neigh_tbl_find(struct rocker *rocker, __be32 ip_addr) 2785{ 2786 struct rocker_neigh_tbl_entry *found; 2787 2788 hash_for_each_possible(rocker->neigh_tbl, found, 2789 entry, be32_to_cpu(ip_addr)) 2790 if (found->ip_addr == ip_addr) 2791 return found; 2792 2793 return NULL; 2794} 2795 2796static void _rocker_neigh_add(struct rocker *rocker, 2797 struct rocker_neigh_tbl_entry *entry) 2798{ 2799 entry->index = rocker->neigh_tbl_next_index++; 2800 entry->ref_count++; 2801 hash_add(rocker->neigh_tbl, &entry->entry, 2802 be32_to_cpu(entry->ip_addr)); 2803} 2804 2805static void _rocker_neigh_del(struct rocker *rocker, 2806 struct rocker_neigh_tbl_entry *entry) 2807{ 2808 if (--entry->ref_count == 0) { 2809 hash_del(&entry->entry); 2810 kfree(entry); 2811 } 2812} 2813 2814static void _rocker_neigh_update(struct rocker *rocker, 2815 struct rocker_neigh_tbl_entry *entry, 2816 u8 *eth_dst, bool ttl_check) 2817{ 2818 if (eth_dst) { 2819 ether_addr_copy(entry->eth_dst, eth_dst); 2820 entry->ttl_check = ttl_check; 2821 } else { 2822 entry->ref_count++; 2823 } 2824} 2825 2826static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port, 2827 int flags, __be32 ip_addr, u8 *eth_dst) 2828{ 2829 struct rocker *rocker = rocker_port->rocker; 2830 struct rocker_neigh_tbl_entry *entry; 2831 struct rocker_neigh_tbl_entry *found; 2832 unsigned long lock_flags; 2833 __be16 eth_type = htons(ETH_P_IP); 2834 enum rocker_of_dpa_table_id goto_tbl = 2835 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; 2836 u32 group_id; 2837 u32 priority = 0; 2838 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE); 2839 bool updating; 2840 bool removing; 2841 int err = 0; 2842 2843 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2844 if (!entry) 2845 return -ENOMEM; 2846 2847 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags); 2848 2849 found = rocker_neigh_tbl_find(rocker, ip_addr); 2850 2851 updating = found && adding; 2852 removing = found && !adding; 2853 adding = !found && adding; 2854 2855 if (adding) { 2856 entry->ip_addr = ip_addr; 2857 entry->dev = rocker_port->dev; 2858 ether_addr_copy(entry->eth_dst, eth_dst); 2859 entry->ttl_check = true; 2860 _rocker_neigh_add(rocker, entry); 2861 } else if (removing) { 2862 memcpy(entry, found, sizeof(*entry)); 2863 _rocker_neigh_del(rocker, found); 2864 } else if (updating) { 2865 _rocker_neigh_update(rocker, found, eth_dst, true); 2866 memcpy(entry, found, sizeof(*entry)); 2867 } else { 2868 err = -ENOENT; 2869 } 2870 2871 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags); 2872 2873 if (err) 2874 goto err_out; 2875 2876 /* For each active neighbor, we have an L3 unicast group and 2877 * a /32 route to the neighbor, which uses the L3 unicast 2878 * group. The L3 unicast group can also be referred to by 2879 * other routes' nexthops. 2880 */ 2881 2882 err = rocker_group_l3_unicast(rocker_port, flags, 2883 entry->index, 2884 rocker_port->dev->dev_addr, 2885 entry->eth_dst, 2886 rocker_port->internal_vlan_id, 2887 entry->ttl_check, 2888 rocker_port->pport); 2889 if (err) { 2890 netdev_err(rocker_port->dev, 2891 "Error (%d) L3 unicast group index %d\n", 2892 err, entry->index); 2893 goto err_out; 2894 } 2895 2896 if (adding || removing) { 2897 group_id = ROCKER_GROUP_L3_UNICAST(entry->index); 2898 err = rocker_flow_tbl_ucast4_routing(rocker_port, 2899 eth_type, ip_addr, 2900 inet_make_mask(32), 2901 priority, goto_tbl, 2902 group_id, flags); 2903 2904 if (err) 2905 netdev_err(rocker_port->dev, 2906 "Error (%d) /32 unicast route %pI4 group 0x%08x\n", 2907 err, &entry->ip_addr, group_id); 2908 } 2909 2910err_out: 2911 if (!adding) 2912 kfree(entry); 2913 2914 return err; 2915} 2916 2917static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port, 2918 __be32 ip_addr) 2919{ 2920 struct net_device *dev = rocker_port->dev; 2921 struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr); 2922 int err = 0; 2923 2924 if (!n) { 2925 n = neigh_create(&arp_tbl, &ip_addr, dev); 2926 if (IS_ERR(n)) 2927 return IS_ERR(n); 2928 } 2929 2930 /* If the neigh is already resolved, then go ahead and 2931 * install the entry, otherwise start the ARP process to 2932 * resolve the neigh. 2933 */ 2934 2935 if (n->nud_state & NUD_VALID) 2936 err = rocker_port_ipv4_neigh(rocker_port, 0, ip_addr, n->ha); 2937 else 2938 neigh_event_send(n, NULL); 2939 2940 neigh_release(n); 2941 return err; 2942} 2943 2944static int rocker_port_ipv4_nh(struct rocker_port *rocker_port, int flags, 2945 __be32 ip_addr, u32 *index) 2946{ 2947 struct rocker *rocker = rocker_port->rocker; 2948 struct rocker_neigh_tbl_entry *entry; 2949 struct rocker_neigh_tbl_entry *found; 2950 unsigned long lock_flags; 2951 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE); 2952 bool updating; 2953 bool removing; 2954 bool resolved = true; 2955 int err = 0; 2956 2957 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 2958 if (!entry) 2959 return -ENOMEM; 2960 2961 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags); 2962 2963 found = rocker_neigh_tbl_find(rocker, ip_addr); 2964 if (found) 2965 *index = found->index; 2966 2967 updating = found && adding; 2968 removing = found && !adding; 2969 adding = !found && adding; 2970 2971 if (adding) { 2972 entry->ip_addr = ip_addr; 2973 entry->dev = rocker_port->dev; 2974 _rocker_neigh_add(rocker, entry); 2975 *index = entry->index; 2976 resolved = false; 2977 } else if (removing) { 2978 _rocker_neigh_del(rocker, found); 2979 } else if (updating) { 2980 _rocker_neigh_update(rocker, found, NULL, false); 2981 resolved = !is_zero_ether_addr(found->eth_dst); 2982 } else { 2983 err = -ENOENT; 2984 } 2985 2986 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags); 2987 2988 if (!adding) 2989 kfree(entry); 2990 2991 if (err) 2992 return err; 2993 2994 /* Resolved means neigh ip_addr is resolved to neigh mac. */ 2995 2996 if (!resolved) 2997 err = rocker_port_ipv4_resolve(rocker_port, ip_addr); 2998 2999 return err; 3000} 3001 3002static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port, 3003 int flags, __be16 vlan_id) 3004{ 3005 struct rocker_port *p; 3006 struct rocker *rocker = rocker_port->rocker; 3007 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0); 3008 u32 *group_ids; 3009 u8 group_count = 0; 3010 int err = 0; 3011 int i; 3012 3013 group_ids = kcalloc(rocker->port_count, sizeof(u32), 3014 rocker_op_flags_gfp(flags)); 3015 if (!group_ids) 3016 return -ENOMEM; 3017 3018 /* Adjust the flood group for this VLAN. The flood group 3019 * references an L2 interface group for each port in this 3020 * VLAN. 3021 */ 3022 3023 for (i = 0; i < rocker->port_count; i++) { 3024 p = rocker->ports[i]; 3025 if (!rocker_port_is_bridged(p)) 3026 continue; 3027 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) { 3028 group_ids[group_count++] = 3029 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport); 3030 } 3031 } 3032 3033 /* If there are no bridged ports in this VLAN, we're done */ 3034 if (group_count == 0) 3035 goto no_ports_in_vlan; 3036 3037 err = rocker_group_l2_flood(rocker_port, flags, vlan_id, 3038 group_count, group_ids, 3039 group_id); 3040 if (err) 3041 netdev_err(rocker_port->dev, 3042 "Error (%d) port VLAN l2 flood group\n", err); 3043 3044no_ports_in_vlan: 3045 kfree(group_ids); 3046 return err; 3047} 3048 3049static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port, 3050 int flags, __be16 vlan_id, 3051 bool pop_vlan) 3052{ 3053 struct rocker *rocker = rocker_port->rocker; 3054 struct rocker_port *p; 3055 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE); 3056 u32 out_pport; 3057 int ref = 0; 3058 int err; 3059 int i; 3060 3061 /* An L2 interface group for this port in this VLAN, but 3062 * only when port STP state is LEARNING|FORWARDING. 3063 */ 3064 3065 if (rocker_port->stp_state == BR_STATE_LEARNING || 3066 rocker_port->stp_state == BR_STATE_FORWARDING) { 3067 out_pport = rocker_port->pport; 3068 err = rocker_group_l2_interface(rocker_port, flags, 3069 vlan_id, out_pport, 3070 pop_vlan); 3071 if (err) { 3072 netdev_err(rocker_port->dev, 3073 "Error (%d) port VLAN l2 group for pport %d\n", 3074 err, out_pport); 3075 return err; 3076 } 3077 } 3078 3079 /* An L2 interface group for this VLAN to CPU port. 3080 * Add when first port joins this VLAN and destroy when 3081 * last port leaves this VLAN. 3082 */ 3083 3084 for (i = 0; i < rocker->port_count; i++) { 3085 p = rocker->ports[i]; 3086 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) 3087 ref++; 3088 } 3089 3090 if ((!adding || ref != 1) && (adding || ref != 0)) 3091 return 0; 3092 3093 out_pport = 0; 3094 err = rocker_group_l2_interface(rocker_port, flags, 3095 vlan_id, out_pport, 3096 pop_vlan); 3097 if (err) { 3098 netdev_err(rocker_port->dev, 3099 "Error (%d) port VLAN l2 group for CPU port\n", err); 3100 return err; 3101 } 3102 3103 return 0; 3104} 3105 3106static struct rocker_ctrl { 3107 const u8 *eth_dst; 3108 const u8 *eth_dst_mask; 3109 __be16 eth_type; 3110 bool acl; 3111 bool bridge; 3112 bool term; 3113 bool copy_to_cpu; 3114} rocker_ctrls[] = { 3115 [ROCKER_CTRL_LINK_LOCAL_MCAST] = { 3116 /* pass link local multicast pkts up to CPU for filtering */ 3117 .eth_dst = ll_mac, 3118 .eth_dst_mask = ll_mask, 3119 .acl = true, 3120 }, 3121 [ROCKER_CTRL_LOCAL_ARP] = { 3122 /* pass local ARP pkts up to CPU */ 3123 .eth_dst = zero_mac, 3124 .eth_dst_mask = zero_mac, 3125 .eth_type = htons(ETH_P_ARP), 3126 .acl = true, 3127 }, 3128 [ROCKER_CTRL_IPV4_MCAST] = { 3129 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */ 3130 .eth_dst = ipv4_mcast, 3131 .eth_dst_mask = ipv4_mask, 3132 .eth_type = htons(ETH_P_IP), 3133 .term = true, 3134 .copy_to_cpu = true, 3135 }, 3136 [ROCKER_CTRL_IPV6_MCAST] = { 3137 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */ 3138 .eth_dst = ipv6_mcast, 3139 .eth_dst_mask = ipv6_mask, 3140 .eth_type = htons(ETH_P_IPV6), 3141 .term = true, 3142 .copy_to_cpu = true, 3143 }, 3144 [ROCKER_CTRL_DFLT_BRIDGING] = { 3145 /* flood any pkts on vlan */ 3146 .bridge = true, 3147 .copy_to_cpu = true, 3148 }, 3149}; 3150 3151static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port, 3152 int flags, struct rocker_ctrl *ctrl, 3153 __be16 vlan_id) 3154{ 3155 u32 in_pport = rocker_port->pport; 3156 u32 in_pport_mask = 0xffffffff; 3157 u32 out_pport = 0; 3158 u8 *eth_src = NULL; 3159 u8 *eth_src_mask = NULL; 3160 __be16 vlan_id_mask = htons(0xffff); 3161 u8 ip_proto = 0; 3162 u8 ip_proto_mask = 0; 3163 u8 ip_tos = 0; 3164 u8 ip_tos_mask = 0; 3165 u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); 3166 int err; 3167 3168 err = rocker_flow_tbl_acl(rocker_port, flags, 3169 in_pport, in_pport_mask, 3170 eth_src, eth_src_mask, 3171 ctrl->eth_dst, ctrl->eth_dst_mask, 3172 ctrl->eth_type, 3173 vlan_id, vlan_id_mask, 3174 ip_proto, ip_proto_mask, 3175 ip_tos, ip_tos_mask, 3176 group_id); 3177 3178 if (err) 3179 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err); 3180 3181 return err; 3182} 3183 3184static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port, 3185 int flags, struct rocker_ctrl *ctrl, 3186 __be16 vlan_id) 3187{ 3188 enum rocker_of_dpa_table_id goto_tbl = 3189 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; 3190 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0); 3191 u32 tunnel_id = 0; 3192 int err; 3193 3194 if (!rocker_port_is_bridged(rocker_port)) 3195 return 0; 3196 3197 err = rocker_flow_tbl_bridge(rocker_port, flags, 3198 ctrl->eth_dst, ctrl->eth_dst_mask, 3199 vlan_id, tunnel_id, 3200 goto_tbl, group_id, ctrl->copy_to_cpu); 3201 3202 if (err) 3203 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err); 3204 3205 return err; 3206} 3207 3208static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port, 3209 int flags, struct rocker_ctrl *ctrl, 3210 __be16 vlan_id) 3211{ 3212 u32 in_pport_mask = 0xffffffff; 3213 __be16 vlan_id_mask = htons(0xffff); 3214 int err; 3215 3216 if (ntohs(vlan_id) == 0) 3217 vlan_id = rocker_port->internal_vlan_id; 3218 3219 err = rocker_flow_tbl_term_mac(rocker_port, 3220 rocker_port->pport, in_pport_mask, 3221 ctrl->eth_type, ctrl->eth_dst, 3222 ctrl->eth_dst_mask, vlan_id, 3223 vlan_id_mask, ctrl->copy_to_cpu, 3224 flags); 3225 3226 if (err) 3227 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err); 3228 3229 return err; 3230} 3231 3232static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags, 3233 struct rocker_ctrl *ctrl, __be16 vlan_id) 3234{ 3235 if (ctrl->acl) 3236 return rocker_port_ctrl_vlan_acl(rocker_port, flags, 3237 ctrl, vlan_id); 3238 if (ctrl->bridge) 3239 return rocker_port_ctrl_vlan_bridge(rocker_port, flags, 3240 ctrl, vlan_id); 3241 3242 if (ctrl->term) 3243 return rocker_port_ctrl_vlan_term(rocker_port, flags, 3244 ctrl, vlan_id); 3245 3246 return -EOPNOTSUPP; 3247} 3248 3249static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port, 3250 int flags, __be16 vlan_id) 3251{ 3252 int err = 0; 3253 int i; 3254 3255 for (i = 0; i < ROCKER_CTRL_MAX; i++) { 3256 if (rocker_port->ctrls[i]) { 3257 err = rocker_port_ctrl_vlan(rocker_port, flags, 3258 &rocker_ctrls[i], vlan_id); 3259 if (err) 3260 return err; 3261 } 3262 } 3263 3264 return err; 3265} 3266 3267static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags, 3268 struct rocker_ctrl *ctrl) 3269{ 3270 u16 vid; 3271 int err = 0; 3272 3273 for (vid = 1; vid < VLAN_N_VID; vid++) { 3274 if (!test_bit(vid, rocker_port->vlan_bitmap)) 3275 continue; 3276 err = rocker_port_ctrl_vlan(rocker_port, flags, 3277 ctrl, htons(vid)); 3278 if (err) 3279 break; 3280 } 3281 3282 return err; 3283} 3284 3285static int rocker_port_vlan(struct rocker_port *rocker_port, int flags, 3286 u16 vid) 3287{ 3288 enum rocker_of_dpa_table_id goto_tbl = 3289 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC; 3290 u32 in_pport = rocker_port->pport; 3291 __be16 vlan_id = htons(vid); 3292 __be16 vlan_id_mask = htons(0xffff); 3293 __be16 internal_vlan_id; 3294 bool untagged; 3295 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE); 3296 int err; 3297 3298 internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged); 3299 3300 if (adding && test_and_set_bit(ntohs(internal_vlan_id), 3301 rocker_port->vlan_bitmap)) 3302 return 0; /* already added */ 3303 else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id), 3304 rocker_port->vlan_bitmap)) 3305 return 0; /* already removed */ 3306 3307 if (adding) { 3308 err = rocker_port_ctrl_vlan_add(rocker_port, flags, 3309 internal_vlan_id); 3310 if (err) { 3311 netdev_err(rocker_port->dev, 3312 "Error (%d) port ctrl vlan add\n", err); 3313 return err; 3314 } 3315 } 3316 3317 err = rocker_port_vlan_l2_groups(rocker_port, flags, 3318 internal_vlan_id, untagged); 3319 if (err) { 3320 netdev_err(rocker_port->dev, 3321 "Error (%d) port VLAN l2 groups\n", err); 3322 return err; 3323 } 3324 3325 err = rocker_port_vlan_flood_group(rocker_port, flags, 3326 internal_vlan_id); 3327 if (err) { 3328 netdev_err(rocker_port->dev, 3329 "Error (%d) port VLAN l2 flood group\n", err); 3330 return err; 3331 } 3332 3333 err = rocker_flow_tbl_vlan(rocker_port, flags, 3334 in_pport, vlan_id, vlan_id_mask, 3335 goto_tbl, untagged, internal_vlan_id); 3336 if (err) 3337 netdev_err(rocker_port->dev, 3338 "Error (%d) port VLAN table\n", err); 3339 3340 return err; 3341} 3342 3343static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags) 3344{ 3345 enum rocker_of_dpa_table_id goto_tbl; 3346 u32 in_pport; 3347 u32 in_pport_mask; 3348 int err; 3349 3350 /* Normal Ethernet Frames. Matches pkts from any local physical 3351 * ports. Goto VLAN tbl. 3352 */ 3353 3354 in_pport = 0; 3355 in_pport_mask = 0xffff0000; 3356 goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN; 3357 3358 err = rocker_flow_tbl_ig_port(rocker_port, flags, 3359 in_pport, in_pport_mask, 3360 goto_tbl); 3361 if (err) 3362 netdev_err(rocker_port->dev, 3363 "Error (%d) ingress port table entry\n", err); 3364 3365 return err; 3366} 3367 3368struct rocker_fdb_learn_work { 3369 struct work_struct work; 3370 struct net_device *dev; 3371 int flags; 3372 u8 addr[ETH_ALEN]; 3373 u16 vid; 3374}; 3375 3376static void rocker_port_fdb_learn_work(struct work_struct *work) 3377{ 3378 struct rocker_fdb_learn_work *lw = 3379 container_of(work, struct rocker_fdb_learn_work, work); 3380 bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE); 3381 bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED); 3382 struct netdev_switch_notifier_fdb_info info; 3383 3384 info.addr = lw->addr; 3385 info.vid = lw->vid; 3386 3387 rtnl_lock(); 3388 if (learned && removing) 3389 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL, 3390 lw->dev, &info.info); 3391 else if (learned && !removing) 3392 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD, 3393 lw->dev, &info.info); 3394 rtnl_unlock(); 3395 3396 kfree(work); 3397} 3398 3399static int rocker_port_fdb_learn(struct rocker_port *rocker_port, 3400 int flags, const u8 *addr, __be16 vlan_id) 3401{ 3402 struct rocker_fdb_learn_work *lw; 3403 enum rocker_of_dpa_table_id goto_tbl = 3404 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; 3405 u32 out_pport = rocker_port->pport; 3406 u32 tunnel_id = 0; 3407 u32 group_id = ROCKER_GROUP_NONE; 3408 bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC); 3409 bool copy_to_cpu = false; 3410 int err; 3411 3412 if (rocker_port_is_bridged(rocker_port)) 3413 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); 3414 3415 if (!(flags & ROCKER_OP_FLAG_REFRESH)) { 3416 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL, 3417 vlan_id, tunnel_id, goto_tbl, 3418 group_id, copy_to_cpu); 3419 if (err) 3420 return err; 3421 } 3422 3423 if (!syncing) 3424 return 0; 3425 3426 if (!rocker_port_is_bridged(rocker_port)) 3427 return 0; 3428 3429 lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags)); 3430 if (!lw) 3431 return -ENOMEM; 3432 3433 INIT_WORK(&lw->work, rocker_port_fdb_learn_work); 3434 3435 lw->dev = rocker_port->dev; 3436 lw->flags = flags; 3437 ether_addr_copy(lw->addr, addr); 3438 lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id); 3439 3440 schedule_work(&lw->work); 3441 3442 return 0; 3443} 3444 3445static struct rocker_fdb_tbl_entry * 3446rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match) 3447{ 3448 struct rocker_fdb_tbl_entry *found; 3449 3450 hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32) 3451 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0) 3452 return found; 3453 3454 return NULL; 3455} 3456 3457static int rocker_port_fdb(struct rocker_port *rocker_port, 3458 const unsigned char *addr, 3459 __be16 vlan_id, int flags) 3460{ 3461 struct rocker *rocker = rocker_port->rocker; 3462 struct rocker_fdb_tbl_entry *fdb; 3463 struct rocker_fdb_tbl_entry *found; 3464 bool removing = (flags & ROCKER_OP_FLAG_REMOVE); 3465 unsigned long lock_flags; 3466 3467 fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags)); 3468 if (!fdb) 3469 return -ENOMEM; 3470 3471 fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED); 3472 fdb->key.pport = rocker_port->pport; 3473 ether_addr_copy(fdb->key.addr, addr); 3474 fdb->key.vlan_id = vlan_id; 3475 fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key)); 3476 3477 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); 3478 3479 found = rocker_fdb_tbl_find(rocker, fdb); 3480 3481 if (removing && found) { 3482 kfree(fdb); 3483 hash_del(&found->entry); 3484 } else if (!removing && !found) { 3485 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32); 3486 } 3487 3488 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); 3489 3490 /* Check if adding and already exists, or removing and can't find */ 3491 if (!found != !removing) { 3492 kfree(fdb); 3493 if (!found && removing) 3494 return 0; 3495 /* Refreshing existing to update aging timers */ 3496 flags |= ROCKER_OP_FLAG_REFRESH; 3497 } 3498 3499 return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id); 3500} 3501 3502static int rocker_port_fdb_flush(struct rocker_port *rocker_port) 3503{ 3504 struct rocker *rocker = rocker_port->rocker; 3505 struct rocker_fdb_tbl_entry *found; 3506 unsigned long lock_flags; 3507 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE; 3508 struct hlist_node *tmp; 3509 int bkt; 3510 int err = 0; 3511 3512 if (rocker_port->stp_state == BR_STATE_LEARNING || 3513 rocker_port->stp_state == BR_STATE_FORWARDING) 3514 return 0; 3515 3516 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); 3517 3518 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) { 3519 if (found->key.pport != rocker_port->pport) 3520 continue; 3521 if (!found->learned) 3522 continue; 3523 err = rocker_port_fdb_learn(rocker_port, flags, 3524 found->key.addr, 3525 found->key.vlan_id); 3526 if (err) 3527 goto err_out; 3528 hash_del(&found->entry); 3529 } 3530 3531err_out: 3532 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); 3533 3534 return err; 3535} 3536 3537static int rocker_port_router_mac(struct rocker_port *rocker_port, 3538 int flags, __be16 vlan_id) 3539{ 3540 u32 in_pport_mask = 0xffffffff; 3541 __be16 eth_type; 3542 const u8 *dst_mac_mask = ff_mac; 3543 __be16 vlan_id_mask = htons(0xffff); 3544 bool copy_to_cpu = false; 3545 int err; 3546 3547 if (ntohs(vlan_id) == 0) 3548 vlan_id = rocker_port->internal_vlan_id; 3549 3550 eth_type = htons(ETH_P_IP); 3551 err = rocker_flow_tbl_term_mac(rocker_port, 3552 rocker_port->pport, in_pport_mask, 3553 eth_type, rocker_port->dev->dev_addr, 3554 dst_mac_mask, vlan_id, vlan_id_mask, 3555 copy_to_cpu, flags); 3556 if (err) 3557 return err; 3558 3559 eth_type = htons(ETH_P_IPV6); 3560 err = rocker_flow_tbl_term_mac(rocker_port, 3561 rocker_port->pport, in_pport_mask, 3562 eth_type, rocker_port->dev->dev_addr, 3563 dst_mac_mask, vlan_id, vlan_id_mask, 3564 copy_to_cpu, flags); 3565 3566 return err; 3567} 3568 3569static int rocker_port_fwding(struct rocker_port *rocker_port) 3570{ 3571 bool pop_vlan; 3572 u32 out_pport; 3573 __be16 vlan_id; 3574 u16 vid; 3575 int flags = ROCKER_OP_FLAG_NOWAIT; 3576 int err; 3577 3578 /* Port will be forwarding-enabled if its STP state is LEARNING 3579 * or FORWARDING. Traffic from CPU can still egress, regardless of 3580 * port STP state. Use L2 interface group on port VLANs as a way 3581 * to toggle port forwarding: if forwarding is disabled, L2 3582 * interface group will not exist. 3583 */ 3584 3585 if (rocker_port->stp_state != BR_STATE_LEARNING && 3586 rocker_port->stp_state != BR_STATE_FORWARDING) 3587 flags |= ROCKER_OP_FLAG_REMOVE; 3588 3589 out_pport = rocker_port->pport; 3590 for (vid = 1; vid < VLAN_N_VID; vid++) { 3591 if (!test_bit(vid, rocker_port->vlan_bitmap)) 3592 continue; 3593 vlan_id = htons(vid); 3594 pop_vlan = rocker_vlan_id_is_internal(vlan_id); 3595 err = rocker_group_l2_interface(rocker_port, flags, 3596 vlan_id, out_pport, 3597 pop_vlan); 3598 if (err) { 3599 netdev_err(rocker_port->dev, 3600 "Error (%d) port VLAN l2 group for pport %d\n", 3601 err, out_pport); 3602 return err; 3603 } 3604 } 3605 3606 return 0; 3607} 3608 3609static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state) 3610{ 3611 bool want[ROCKER_CTRL_MAX] = { 0, }; 3612 int flags; 3613 int err; 3614 int i; 3615 3616 if (rocker_port->stp_state == state) 3617 return 0; 3618 3619 rocker_port->stp_state = state; 3620 3621 switch (state) { 3622 case BR_STATE_DISABLED: 3623 /* port is completely disabled */ 3624 break; 3625 case BR_STATE_LISTENING: 3626 case BR_STATE_BLOCKING: 3627 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true; 3628 break; 3629 case BR_STATE_LEARNING: 3630 case BR_STATE_FORWARDING: 3631 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true; 3632 want[ROCKER_CTRL_IPV4_MCAST] = true; 3633 want[ROCKER_CTRL_IPV6_MCAST] = true; 3634 if (rocker_port_is_bridged(rocker_port)) 3635 want[ROCKER_CTRL_DFLT_BRIDGING] = true; 3636 else 3637 want[ROCKER_CTRL_LOCAL_ARP] = true; 3638 break; 3639 } 3640 3641 for (i = 0; i < ROCKER_CTRL_MAX; i++) { 3642 if (want[i] != rocker_port->ctrls[i]) { 3643 flags = ROCKER_OP_FLAG_NOWAIT | 3644 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE); 3645 err = rocker_port_ctrl(rocker_port, flags, 3646 &rocker_ctrls[i]); 3647 if (err) 3648 return err; 3649 rocker_port->ctrls[i] = want[i]; 3650 } 3651 } 3652 3653 err = rocker_port_fdb_flush(rocker_port); 3654 if (err) 3655 return err; 3656 3657 return rocker_port_fwding(rocker_port); 3658} 3659 3660static int rocker_port_fwd_enable(struct rocker_port *rocker_port) 3661{ 3662 if (rocker_port_is_bridged(rocker_port)) 3663 /* bridge STP will enable port */ 3664 return 0; 3665 3666 /* port is not bridged, so simulate going to FORWARDING state */ 3667 return rocker_port_stp_update(rocker_port, BR_STATE_FORWARDING); 3668} 3669 3670static int rocker_port_fwd_disable(struct rocker_port *rocker_port) 3671{ 3672 if (rocker_port_is_bridged(rocker_port)) 3673 /* bridge STP will disable port */ 3674 return 0; 3675 3676 /* port is not bridged, so simulate going to DISABLED state */ 3677 return rocker_port_stp_update(rocker_port, BR_STATE_DISABLED); 3678} 3679 3680static struct rocker_internal_vlan_tbl_entry * 3681rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex) 3682{ 3683 struct rocker_internal_vlan_tbl_entry *found; 3684 3685 hash_for_each_possible(rocker->internal_vlan_tbl, found, 3686 entry, ifindex) { 3687 if (found->ifindex == ifindex) 3688 return found; 3689 } 3690 3691 return NULL; 3692} 3693 3694static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port, 3695 int ifindex) 3696{ 3697 struct rocker *rocker = rocker_port->rocker; 3698 struct rocker_internal_vlan_tbl_entry *entry; 3699 struct rocker_internal_vlan_tbl_entry *found; 3700 unsigned long lock_flags; 3701 int i; 3702 3703 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 3704 if (!entry) 3705 return 0; 3706 3707 entry->ifindex = ifindex; 3708 3709 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags); 3710 3711 found = rocker_internal_vlan_tbl_find(rocker, ifindex); 3712 if (found) { 3713 kfree(entry); 3714 goto found; 3715 } 3716 3717 found = entry; 3718 hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex); 3719 3720 for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) { 3721 if (test_and_set_bit(i, rocker->internal_vlan_bitmap)) 3722 continue; 3723 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i); 3724 goto found; 3725 } 3726 3727 netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n"); 3728 3729found: 3730 found->ref_count++; 3731 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags); 3732 3733 return found->vlan_id; 3734} 3735 3736static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port, 3737 int ifindex) 3738{ 3739 struct rocker *rocker = rocker_port->rocker; 3740 struct rocker_internal_vlan_tbl_entry *found; 3741 unsigned long lock_flags; 3742 unsigned long bit; 3743 3744 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags); 3745 3746 found = rocker_internal_vlan_tbl_find(rocker, ifindex); 3747 if (!found) { 3748 netdev_err(rocker_port->dev, 3749 "ifindex (%d) not found in internal VLAN tbl\n", 3750 ifindex); 3751 goto not_found; 3752 } 3753 3754 if (--found->ref_count <= 0) { 3755 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE; 3756 clear_bit(bit, rocker->internal_vlan_bitmap); 3757 hash_del(&found->entry); 3758 kfree(found); 3759 } 3760 3761not_found: 3762 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags); 3763} 3764 3765static int rocker_port_fib_ipv4(struct rocker_port *rocker_port, __be32 dst, 3766 int dst_len, struct fib_info *fi, u32 tb_id, 3767 int flags) 3768{ 3769 struct fib_nh *nh; 3770 __be16 eth_type = htons(ETH_P_IP); 3771 __be32 dst_mask = inet_make_mask(dst_len); 3772 __be16 internal_vlan_id = rocker_port->internal_vlan_id; 3773 u32 priority = fi->fib_priority; 3774 enum rocker_of_dpa_table_id goto_tbl = 3775 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; 3776 u32 group_id; 3777 bool nh_on_port; 3778 bool has_gw; 3779 u32 index; 3780 int err; 3781 3782 /* XXX support ECMP */ 3783 3784 nh = fi->fib_nh; 3785 nh_on_port = (fi->fib_dev == rocker_port->dev); 3786 has_gw = !!nh->nh_gw; 3787 3788 if (has_gw && nh_on_port) { 3789 err = rocker_port_ipv4_nh(rocker_port, flags, 3790 nh->nh_gw, &index); 3791 if (err) 3792 return err; 3793 3794 group_id = ROCKER_GROUP_L3_UNICAST(index); 3795 } else { 3796 /* Send to CPU for processing */ 3797 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0); 3798 } 3799 3800 err = rocker_flow_tbl_ucast4_routing(rocker_port, eth_type, dst, 3801 dst_mask, priority, goto_tbl, 3802 group_id, flags); 3803 if (err) 3804 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n", 3805 err, &dst); 3806 3807 return err; 3808} 3809 3810/***************** 3811 * Net device ops 3812 *****************/ 3813 3814static int rocker_port_open(struct net_device *dev) 3815{ 3816 struct rocker_port *rocker_port = netdev_priv(dev); 3817 int err; 3818 3819 err = rocker_port_dma_rings_init(rocker_port); 3820 if (err) 3821 return err; 3822 3823 err = request_irq(rocker_msix_tx_vector(rocker_port), 3824 rocker_tx_irq_handler, 0, 3825 rocker_driver_name, rocker_port); 3826 if (err) { 3827 netdev_err(rocker_port->dev, "cannot assign tx irq\n"); 3828 goto err_request_tx_irq; 3829 } 3830 3831 err = request_irq(rocker_msix_rx_vector(rocker_port), 3832 rocker_rx_irq_handler, 0, 3833 rocker_driver_name, rocker_port); 3834 if (err) { 3835 netdev_err(rocker_port->dev, "cannot assign rx irq\n"); 3836 goto err_request_rx_irq; 3837 } 3838 3839 err = rocker_port_fwd_enable(rocker_port); 3840 if (err) 3841 goto err_fwd_enable; 3842 3843 napi_enable(&rocker_port->napi_tx); 3844 napi_enable(&rocker_port->napi_rx); 3845 rocker_port_set_enable(rocker_port, true); 3846 netif_start_queue(dev); 3847 return 0; 3848 3849err_fwd_enable: 3850 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); 3851err_request_rx_irq: 3852 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); 3853err_request_tx_irq: 3854 rocker_port_dma_rings_fini(rocker_port); 3855 return err; 3856} 3857 3858static int rocker_port_stop(struct net_device *dev) 3859{ 3860 struct rocker_port *rocker_port = netdev_priv(dev); 3861 3862 netif_stop_queue(dev); 3863 rocker_port_set_enable(rocker_port, false); 3864 napi_disable(&rocker_port->napi_rx); 3865 napi_disable(&rocker_port->napi_tx); 3866 rocker_port_fwd_disable(rocker_port); 3867 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); 3868 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); 3869 rocker_port_dma_rings_fini(rocker_port); 3870 3871 return 0; 3872} 3873 3874static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port, 3875 struct rocker_desc_info *desc_info) 3876{ 3877 struct rocker *rocker = rocker_port->rocker; 3878 struct pci_dev *pdev = rocker->pdev; 3879 struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1]; 3880 struct rocker_tlv *attr; 3881 int rem; 3882 3883 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info); 3884 if (!attrs[ROCKER_TLV_TX_FRAGS]) 3885 return; 3886 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) { 3887 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1]; 3888 dma_addr_t dma_handle; 3889 size_t len; 3890 3891 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG) 3892 continue; 3893 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX, 3894 attr); 3895 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] || 3896 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]) 3897 continue; 3898 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]); 3899 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]); 3900 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE); 3901 } 3902} 3903 3904static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port, 3905 struct rocker_desc_info *desc_info, 3906 char *buf, size_t buf_len) 3907{ 3908 struct rocker *rocker = rocker_port->rocker; 3909 struct pci_dev *pdev = rocker->pdev; 3910 dma_addr_t dma_handle; 3911 struct rocker_tlv *frag; 3912 3913 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE); 3914 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) { 3915 if (net_ratelimit()) 3916 netdev_err(rocker_port->dev, "failed to dma map tx frag\n"); 3917 return -EIO; 3918 } 3919 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG); 3920 if (!frag) 3921 goto unmap_frag; 3922 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR, 3923 dma_handle)) 3924 goto nest_cancel; 3925 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN, 3926 buf_len)) 3927 goto nest_cancel; 3928 rocker_tlv_nest_end(desc_info, frag); 3929 return 0; 3930 3931nest_cancel: 3932 rocker_tlv_nest_cancel(desc_info, frag); 3933unmap_frag: 3934 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE); 3935 return -EMSGSIZE; 3936} 3937 3938static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev) 3939{ 3940 struct rocker_port *rocker_port = netdev_priv(dev); 3941 struct rocker *rocker = rocker_port->rocker; 3942 struct rocker_desc_info *desc_info; 3943 struct rocker_tlv *frags; 3944 int i; 3945 int err; 3946 3947 desc_info = rocker_desc_head_get(&rocker_port->tx_ring); 3948 if (unlikely(!desc_info)) { 3949 if (net_ratelimit()) 3950 netdev_err(dev, "tx ring full when queue awake\n"); 3951 return NETDEV_TX_BUSY; 3952 } 3953 3954 rocker_desc_cookie_ptr_set(desc_info, skb); 3955 3956 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS); 3957 if (!frags) 3958 goto out; 3959 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, 3960 skb->data, skb_headlen(skb)); 3961 if (err) 3962 goto nest_cancel; 3963 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) 3964 goto nest_cancel; 3965 3966 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 3967 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 3968 3969 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, 3970 skb_frag_address(frag), 3971 skb_frag_size(frag)); 3972 if (err) 3973 goto unmap_frags; 3974 } 3975 rocker_tlv_nest_end(desc_info, frags); 3976 3977 rocker_desc_gen_clear(desc_info); 3978 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info); 3979 3980 desc_info = rocker_desc_head_get(&rocker_port->tx_ring); 3981 if (!desc_info) 3982 netif_stop_queue(dev); 3983 3984 return NETDEV_TX_OK; 3985 3986unmap_frags: 3987 rocker_tx_desc_frags_unmap(rocker_port, desc_info); 3988nest_cancel: 3989 rocker_tlv_nest_cancel(desc_info, frags); 3990out: 3991 dev_kfree_skb(skb); 3992 dev->stats.tx_dropped++; 3993 3994 return NETDEV_TX_OK; 3995} 3996 3997static int rocker_port_set_mac_address(struct net_device *dev, void *p) 3998{ 3999 struct sockaddr *addr = p; 4000 struct rocker_port *rocker_port = netdev_priv(dev); 4001 int err; 4002 4003 if (!is_valid_ether_addr(addr->sa_data)) 4004 return -EADDRNOTAVAIL; 4005 4006 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data); 4007 if (err) 4008 return err; 4009 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); 4010 return 0; 4011} 4012 4013static int rocker_port_vlan_rx_add_vid(struct net_device *dev, 4014 __be16 proto, u16 vid) 4015{ 4016 struct rocker_port *rocker_port = netdev_priv(dev); 4017 int err; 4018 4019 err = rocker_port_vlan(rocker_port, 0, vid); 4020 if (err) 4021 return err; 4022 4023 return rocker_port_router_mac(rocker_port, 0, htons(vid)); 4024} 4025 4026static int rocker_port_vlan_rx_kill_vid(struct net_device *dev, 4027 __be16 proto, u16 vid) 4028{ 4029 struct rocker_port *rocker_port = netdev_priv(dev); 4030 int err; 4031 4032 err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE, 4033 htons(vid)); 4034 if (err) 4035 return err; 4036 4037 return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid); 4038} 4039 4040static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 4041 struct net_device *dev, 4042 const unsigned char *addr, u16 vid, 4043 u16 nlm_flags) 4044{ 4045 struct rocker_port *rocker_port = netdev_priv(dev); 4046 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL); 4047 int flags = 0; 4048 4049 if (!rocker_port_is_bridged(rocker_port)) 4050 return -EINVAL; 4051 4052 return rocker_port_fdb(rocker_port, addr, vlan_id, flags); 4053} 4054 4055static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], 4056 struct net_device *dev, 4057 const unsigned char *addr, u16 vid) 4058{ 4059 struct rocker_port *rocker_port = netdev_priv(dev); 4060 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL); 4061 int flags = ROCKER_OP_FLAG_REMOVE; 4062 4063 if (!rocker_port_is_bridged(rocker_port)) 4064 return -EINVAL; 4065 4066 return rocker_port_fdb(rocker_port, addr, vlan_id, flags); 4067} 4068 4069static int rocker_fdb_fill_info(struct sk_buff *skb, 4070 struct rocker_port *rocker_port, 4071 const unsigned char *addr, u16 vid, 4072 u32 portid, u32 seq, int type, 4073 unsigned int flags) 4074{ 4075 struct nlmsghdr *nlh; 4076 struct ndmsg *ndm; 4077 4078 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags); 4079 if (!nlh) 4080 return -EMSGSIZE; 4081 4082 ndm = nlmsg_data(nlh); 4083 ndm->ndm_family = AF_BRIDGE; 4084 ndm->ndm_pad1 = 0; 4085 ndm->ndm_pad2 = 0; 4086 ndm->ndm_flags = NTF_SELF; 4087 ndm->ndm_type = 0; 4088 ndm->ndm_ifindex = rocker_port->dev->ifindex; 4089 ndm->ndm_state = NUD_REACHABLE; 4090 4091 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) 4092 goto nla_put_failure; 4093 4094 if (vid && nla_put_u16(skb, NDA_VLAN, vid)) 4095 goto nla_put_failure; 4096 4097 nlmsg_end(skb, nlh); 4098 return 0; 4099 4100nla_put_failure: 4101 nlmsg_cancel(skb, nlh); 4102 return -EMSGSIZE; 4103} 4104 4105static int rocker_port_fdb_dump(struct sk_buff *skb, 4106 struct netlink_callback *cb, 4107 struct net_device *dev, 4108 struct net_device *filter_dev, 4109 int idx) 4110{ 4111 struct rocker_port *rocker_port = netdev_priv(dev); 4112 struct rocker *rocker = rocker_port->rocker; 4113 struct rocker_fdb_tbl_entry *found; 4114 struct hlist_node *tmp; 4115 int bkt; 4116 unsigned long lock_flags; 4117 const unsigned char *addr; 4118 u16 vid; 4119 int err; 4120 4121 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); 4122 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) { 4123 if (found->key.pport != rocker_port->pport) 4124 continue; 4125 if (idx < cb->args[0]) 4126 goto skip; 4127 addr = found->key.addr; 4128 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id); 4129 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid, 4130 NETLINK_CB(cb->skb).portid, 4131 cb->nlh->nlmsg_seq, 4132 RTM_NEWNEIGH, NLM_F_MULTI); 4133 if (err < 0) 4134 break; 4135skip: 4136 ++idx; 4137 } 4138 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); 4139 return idx; 4140} 4141 4142static int rocker_port_bridge_setlink(struct net_device *dev, 4143 struct nlmsghdr *nlh, u16 flags) 4144{ 4145 struct rocker_port *rocker_port = netdev_priv(dev); 4146 struct nlattr *protinfo; 4147 struct nlattr *attr; 4148 int err; 4149 4150 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), 4151 IFLA_PROTINFO); 4152 if (protinfo) { 4153 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING); 4154 if (attr) { 4155 if (nla_len(attr) < sizeof(u8)) 4156 return -EINVAL; 4157 4158 if (nla_get_u8(attr)) 4159 rocker_port->brport_flags |= BR_LEARNING; 4160 else 4161 rocker_port->brport_flags &= ~BR_LEARNING; 4162 err = rocker_port_set_learning(rocker_port); 4163 if (err) 4164 return err; 4165 } 4166 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC); 4167 if (attr) { 4168 if (nla_len(attr) < sizeof(u8)) 4169 return -EINVAL; 4170 4171 if (nla_get_u8(attr)) 4172 rocker_port->brport_flags |= BR_LEARNING_SYNC; 4173 else 4174 rocker_port->brport_flags &= ~BR_LEARNING_SYNC; 4175 } 4176 } 4177 4178 return 0; 4179} 4180 4181static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 4182 struct net_device *dev, 4183 u32 filter_mask, int nlflags) 4184{ 4185 struct rocker_port *rocker_port = netdev_priv(dev); 4186 u16 mode = BRIDGE_MODE_UNDEF; 4187 u32 mask = BR_LEARNING | BR_LEARNING_SYNC; 4188 4189 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, 4190 rocker_port->brport_flags, mask, 4191 nlflags); 4192} 4193 4194static int rocker_port_get_phys_port_name(struct net_device *dev, 4195 char *buf, size_t len) 4196{ 4197 struct rocker_port *rocker_port = netdev_priv(dev); 4198 struct port_name name = { .buf = buf, .len = len }; 4199 int err; 4200 4201 err = rocker_cmd_exec(rocker_port->rocker, rocker_port, 4202 rocker_cmd_get_port_settings_prep, NULL, 4203 rocker_cmd_get_port_settings_phys_name_proc, 4204 &name, false); 4205 4206 return err ? -EOPNOTSUPP : 0; 4207} 4208 4209static const struct net_device_ops rocker_port_netdev_ops = { 4210 .ndo_open = rocker_port_open, 4211 .ndo_stop = rocker_port_stop, 4212 .ndo_start_xmit = rocker_port_xmit, 4213 .ndo_set_mac_address = rocker_port_set_mac_address, 4214 .ndo_vlan_rx_add_vid = rocker_port_vlan_rx_add_vid, 4215 .ndo_vlan_rx_kill_vid = rocker_port_vlan_rx_kill_vid, 4216 .ndo_fdb_add = rocker_port_fdb_add, 4217 .ndo_fdb_del = rocker_port_fdb_del, 4218 .ndo_fdb_dump = rocker_port_fdb_dump, 4219 .ndo_bridge_setlink = rocker_port_bridge_setlink, 4220 .ndo_bridge_getlink = rocker_port_bridge_getlink, 4221 .ndo_get_phys_port_name = rocker_port_get_phys_port_name, 4222}; 4223 4224/******************** 4225 * swdev interface 4226 ********************/ 4227 4228static int rocker_port_swdev_parent_id_get(struct net_device *dev, 4229 struct netdev_phys_item_id *psid) 4230{ 4231 struct rocker_port *rocker_port = netdev_priv(dev); 4232 struct rocker *rocker = rocker_port->rocker; 4233 4234 psid->id_len = sizeof(rocker->hw.id); 4235 memcpy(&psid->id, &rocker->hw.id, psid->id_len); 4236 return 0; 4237} 4238 4239static int rocker_port_swdev_port_stp_update(struct net_device *dev, u8 state) 4240{ 4241 struct rocker_port *rocker_port = netdev_priv(dev); 4242 4243 return rocker_port_stp_update(rocker_port, state); 4244} 4245 4246static int rocker_port_swdev_fib_ipv4_add(struct net_device *dev, 4247 __be32 dst, int dst_len, 4248 struct fib_info *fi, 4249 u8 tos, u8 type, 4250 u32 nlflags, u32 tb_id) 4251{ 4252 struct rocker_port *rocker_port = netdev_priv(dev); 4253 int flags = 0; 4254 4255 return rocker_port_fib_ipv4(rocker_port, dst, dst_len, 4256 fi, tb_id, flags); 4257} 4258 4259static int rocker_port_swdev_fib_ipv4_del(struct net_device *dev, 4260 __be32 dst, int dst_len, 4261 struct fib_info *fi, 4262 u8 tos, u8 type, u32 tb_id) 4263{ 4264 struct rocker_port *rocker_port = netdev_priv(dev); 4265 int flags = ROCKER_OP_FLAG_REMOVE; 4266 4267 return rocker_port_fib_ipv4(rocker_port, dst, dst_len, 4268 fi, tb_id, flags); 4269} 4270 4271static const struct swdev_ops rocker_port_swdev_ops = { 4272 .swdev_parent_id_get = rocker_port_swdev_parent_id_get, 4273 .swdev_port_stp_update = rocker_port_swdev_port_stp_update, 4274 .swdev_fib_ipv4_add = rocker_port_swdev_fib_ipv4_add, 4275 .swdev_fib_ipv4_del = rocker_port_swdev_fib_ipv4_del, 4276}; 4277 4278/******************** 4279 * ethtool interface 4280 ********************/ 4281 4282static int rocker_port_get_settings(struct net_device *dev, 4283 struct ethtool_cmd *ecmd) 4284{ 4285 struct rocker_port *rocker_port = netdev_priv(dev); 4286 4287 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd); 4288} 4289 4290static int rocker_port_set_settings(struct net_device *dev, 4291 struct ethtool_cmd *ecmd) 4292{ 4293 struct rocker_port *rocker_port = netdev_priv(dev); 4294 4295 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd); 4296} 4297 4298static void rocker_port_get_drvinfo(struct net_device *dev, 4299 struct ethtool_drvinfo *drvinfo) 4300{ 4301 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver)); 4302 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); 4303} 4304 4305static struct rocker_port_stats { 4306 char str[ETH_GSTRING_LEN]; 4307 int type; 4308} rocker_port_stats[] = { 4309 { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, }, 4310 { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, }, 4311 { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, }, 4312 { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, }, 4313 4314 { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, }, 4315 { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, }, 4316 { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, }, 4317 { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, }, 4318}; 4319 4320#define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats) 4321 4322static void rocker_port_get_strings(struct net_device *netdev, u32 stringset, 4323 u8 *data) 4324{ 4325 u8 *p = data; 4326 int i; 4327 4328 switch (stringset) { 4329 case ETH_SS_STATS: 4330 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { 4331 memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN); 4332 p += ETH_GSTRING_LEN; 4333 } 4334 break; 4335 } 4336} 4337 4338static int 4339rocker_cmd_get_port_stats_prep(struct rocker *rocker, 4340 struct rocker_port *rocker_port, 4341 struct rocker_desc_info *desc_info, 4342 void *priv) 4343{ 4344 struct rocker_tlv *cmd_stats; 4345 4346 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, 4347 ROCKER_TLV_CMD_TYPE_GET_PORT_STATS)) 4348 return -EMSGSIZE; 4349 4350 cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); 4351 if (!cmd_stats) 4352 return -EMSGSIZE; 4353 4354 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT, 4355 rocker_port->pport)) 4356 return -EMSGSIZE; 4357 4358 rocker_tlv_nest_end(desc_info, cmd_stats); 4359 4360 return 0; 4361} 4362 4363static int 4364rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker, 4365 struct rocker_port *rocker_port, 4366 struct rocker_desc_info *desc_info, 4367 void *priv) 4368{ 4369 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; 4370 struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1]; 4371 struct rocker_tlv *pattr; 4372 u32 pport; 4373 u64 *data = priv; 4374 int i; 4375 4376 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); 4377 4378 if (!attrs[ROCKER_TLV_CMD_INFO]) 4379 return -EIO; 4380 4381 rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX, 4382 attrs[ROCKER_TLV_CMD_INFO]); 4383 4384 if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]) 4385 return -EIO; 4386 4387 pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]); 4388 if (pport != rocker_port->pport) 4389 return -EIO; 4390 4391 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { 4392 pattr = stats_attrs[rocker_port_stats[i].type]; 4393 if (!pattr) 4394 continue; 4395 4396 data[i] = rocker_tlv_get_u64(pattr); 4397 } 4398 4399 return 0; 4400} 4401 4402static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port, 4403 void *priv) 4404{ 4405 return rocker_cmd_exec(rocker_port->rocker, rocker_port, 4406 rocker_cmd_get_port_stats_prep, NULL, 4407 rocker_cmd_get_port_stats_ethtool_proc, 4408 priv, false); 4409} 4410 4411static void rocker_port_get_stats(struct net_device *dev, 4412 struct ethtool_stats *stats, u64 *data) 4413{ 4414 struct rocker_port *rocker_port = netdev_priv(dev); 4415 4416 if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) { 4417 int i; 4418 4419 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i) 4420 data[i] = 0; 4421 } 4422 4423 return; 4424} 4425 4426static int rocker_port_get_sset_count(struct net_device *netdev, int sset) 4427{ 4428 switch (sset) { 4429 case ETH_SS_STATS: 4430 return ROCKER_PORT_STATS_LEN; 4431 default: 4432 return -EOPNOTSUPP; 4433 } 4434} 4435 4436static const struct ethtool_ops rocker_port_ethtool_ops = { 4437 .get_settings = rocker_port_get_settings, 4438 .set_settings = rocker_port_set_settings, 4439 .get_drvinfo = rocker_port_get_drvinfo, 4440 .get_link = ethtool_op_get_link, 4441 .get_strings = rocker_port_get_strings, 4442 .get_ethtool_stats = rocker_port_get_stats, 4443 .get_sset_count = rocker_port_get_sset_count, 4444}; 4445 4446/***************** 4447 * NAPI interface 4448 *****************/ 4449 4450static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi) 4451{ 4452 return container_of(napi, struct rocker_port, napi_tx); 4453} 4454 4455static int rocker_port_poll_tx(struct napi_struct *napi, int budget) 4456{ 4457 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi); 4458 struct rocker *rocker = rocker_port->rocker; 4459 struct rocker_desc_info *desc_info; 4460 u32 credits = 0; 4461 int err; 4462 4463 /* Cleanup tx descriptors */ 4464 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) { 4465 struct sk_buff *skb; 4466 4467 err = rocker_desc_err(desc_info); 4468 if (err && net_ratelimit()) 4469 netdev_err(rocker_port->dev, "tx desc received with err %d\n", 4470 err); 4471 rocker_tx_desc_frags_unmap(rocker_port, desc_info); 4472 4473 skb = rocker_desc_cookie_ptr_get(desc_info); 4474 if (err == 0) { 4475 rocker_port->dev->stats.tx_packets++; 4476 rocker_port->dev->stats.tx_bytes += skb->len; 4477 } else 4478 rocker_port->dev->stats.tx_errors++; 4479 4480 dev_kfree_skb_any(skb); 4481 credits++; 4482 } 4483 4484 if (credits && netif_queue_stopped(rocker_port->dev)) 4485 netif_wake_queue(rocker_port->dev); 4486 4487 napi_complete(napi); 4488 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits); 4489 4490 return 0; 4491} 4492 4493static int rocker_port_rx_proc(struct rocker *rocker, 4494 struct rocker_port *rocker_port, 4495 struct rocker_desc_info *desc_info) 4496{ 4497 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; 4498 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); 4499 size_t rx_len; 4500 4501 if (!skb) 4502 return -ENOENT; 4503 4504 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); 4505 if (!attrs[ROCKER_TLV_RX_FRAG_LEN]) 4506 return -EINVAL; 4507 4508 rocker_dma_rx_ring_skb_unmap(rocker, attrs); 4509 4510 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]); 4511 skb_put(skb, rx_len); 4512 skb->protocol = eth_type_trans(skb, rocker_port->dev); 4513 4514 rocker_port->dev->stats.rx_packets++; 4515 rocker_port->dev->stats.rx_bytes += skb->len; 4516 4517 netif_receive_skb(skb); 4518 4519 return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info); 4520} 4521 4522static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi) 4523{ 4524 return container_of(napi, struct rocker_port, napi_rx); 4525} 4526 4527static int rocker_port_poll_rx(struct napi_struct *napi, int budget) 4528{ 4529 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi); 4530 struct rocker *rocker = rocker_port->rocker; 4531 struct rocker_desc_info *desc_info; 4532 u32 credits = 0; 4533 int err; 4534 4535 /* Process rx descriptors */ 4536 while (credits < budget && 4537 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) { 4538 err = rocker_desc_err(desc_info); 4539 if (err) { 4540 if (net_ratelimit()) 4541 netdev_err(rocker_port->dev, "rx desc received with err %d\n", 4542 err); 4543 } else { 4544 err = rocker_port_rx_proc(rocker, rocker_port, 4545 desc_info); 4546 if (err && net_ratelimit()) 4547 netdev_err(rocker_port->dev, "rx processing failed with err %d\n", 4548 err); 4549 } 4550 if (err) 4551 rocker_port->dev->stats.rx_errors++; 4552 4553 rocker_desc_gen_clear(desc_info); 4554 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info); 4555 credits++; 4556 } 4557 4558 if (credits < budget) 4559 napi_complete(napi); 4560 4561 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits); 4562 4563 return credits; 4564} 4565 4566/***************** 4567 * PCI driver ops 4568 *****************/ 4569 4570static void rocker_carrier_init(struct rocker_port *rocker_port) 4571{ 4572 struct rocker *rocker = rocker_port->rocker; 4573 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS); 4574 bool link_up; 4575 4576 link_up = link_status & (1 << rocker_port->pport); 4577 if (link_up) 4578 netif_carrier_on(rocker_port->dev); 4579 else 4580 netif_carrier_off(rocker_port->dev); 4581} 4582 4583static void rocker_remove_ports(struct rocker *rocker) 4584{ 4585 struct rocker_port *rocker_port; 4586 int i; 4587 4588 for (i = 0; i < rocker->port_count; i++) { 4589 rocker_port = rocker->ports[i]; 4590 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE); 4591 unregister_netdev(rocker_port->dev); 4592 free_netdev(rocker_port->dev); 4593 } 4594 kfree(rocker->ports); 4595} 4596 4597static void rocker_port_dev_addr_init(struct rocker *rocker, 4598 struct rocker_port *rocker_port) 4599{ 4600 struct pci_dev *pdev = rocker->pdev; 4601 int err; 4602 4603 err = rocker_cmd_get_port_settings_macaddr(rocker_port, 4604 rocker_port->dev->dev_addr); 4605 if (err) { 4606 dev_warn(&pdev->dev, "failed to get mac address, using random\n"); 4607 eth_hw_addr_random(rocker_port->dev); 4608 } 4609} 4610 4611static int rocker_probe_port(struct rocker *rocker, unsigned int port_number) 4612{ 4613 struct pci_dev *pdev = rocker->pdev; 4614 struct rocker_port *rocker_port; 4615 struct net_device *dev; 4616 int err; 4617 4618 dev = alloc_etherdev(sizeof(struct rocker_port)); 4619 if (!dev) 4620 return -ENOMEM; 4621 rocker_port = netdev_priv(dev); 4622 rocker_port->dev = dev; 4623 rocker_port->rocker = rocker; 4624 rocker_port->port_number = port_number; 4625 rocker_port->pport = port_number + 1; 4626 rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC; 4627 4628 rocker_port_dev_addr_init(rocker, rocker_port); 4629 dev->netdev_ops = &rocker_port_netdev_ops; 4630 dev->ethtool_ops = &rocker_port_ethtool_ops; 4631 dev->swdev_ops = &rocker_port_swdev_ops; 4632 netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx, 4633 NAPI_POLL_WEIGHT); 4634 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx, 4635 NAPI_POLL_WEIGHT); 4636 rocker_carrier_init(rocker_port); 4637 4638 dev->features |= NETIF_F_NETNS_LOCAL | 4639 NETIF_F_HW_VLAN_CTAG_FILTER | 4640 NETIF_F_HW_SWITCH_OFFLOAD; 4641 4642 err = register_netdev(dev); 4643 if (err) { 4644 dev_err(&pdev->dev, "register_netdev failed\n"); 4645 goto err_register_netdev; 4646 } 4647 rocker->ports[port_number] = rocker_port; 4648 4649 rocker_port_set_learning(rocker_port); 4650 4651 rocker_port->internal_vlan_id = 4652 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex); 4653 err = rocker_port_ig_tbl(rocker_port, 0); 4654 if (err) { 4655 dev_err(&pdev->dev, "install ig port table failed\n"); 4656 goto err_port_ig_tbl; 4657 } 4658 4659 return 0; 4660 4661err_port_ig_tbl: 4662 unregister_netdev(dev); 4663err_register_netdev: 4664 free_netdev(dev); 4665 return err; 4666} 4667 4668static int rocker_probe_ports(struct rocker *rocker) 4669{ 4670 int i; 4671 size_t alloc_size; 4672 int err; 4673 4674 alloc_size = sizeof(struct rocker_port *) * rocker->port_count; 4675 rocker->ports = kmalloc(alloc_size, GFP_KERNEL); 4676 if (!rocker->ports) 4677 return -ENOMEM; 4678 for (i = 0; i < rocker->port_count; i++) { 4679 err = rocker_probe_port(rocker, i); 4680 if (err) 4681 goto remove_ports; 4682 } 4683 return 0; 4684 4685remove_ports: 4686 rocker_remove_ports(rocker); 4687 return err; 4688} 4689 4690static int rocker_msix_init(struct rocker *rocker) 4691{ 4692 struct pci_dev *pdev = rocker->pdev; 4693 int msix_entries; 4694 int i; 4695 int err; 4696 4697 msix_entries = pci_msix_vec_count(pdev); 4698 if (msix_entries < 0) 4699 return msix_entries; 4700 4701 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count)) 4702 return -EINVAL; 4703 4704 rocker->msix_entries = kmalloc_array(msix_entries, 4705 sizeof(struct msix_entry), 4706 GFP_KERNEL); 4707 if (!rocker->msix_entries) 4708 return -ENOMEM; 4709 4710 for (i = 0; i < msix_entries; i++) 4711 rocker->msix_entries[i].entry = i; 4712 4713 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries); 4714 if (err < 0) 4715 goto err_enable_msix; 4716 4717 return 0; 4718 4719err_enable_msix: 4720 kfree(rocker->msix_entries); 4721 return err; 4722} 4723 4724static void rocker_msix_fini(struct rocker *rocker) 4725{ 4726 pci_disable_msix(rocker->pdev); 4727 kfree(rocker->msix_entries); 4728} 4729 4730static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id) 4731{ 4732 struct rocker *rocker; 4733 int err; 4734 4735 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL); 4736 if (!rocker) 4737 return -ENOMEM; 4738 4739 err = pci_enable_device(pdev); 4740 if (err) { 4741 dev_err(&pdev->dev, "pci_enable_device failed\n"); 4742 goto err_pci_enable_device; 4743 } 4744 4745 err = pci_request_regions(pdev, rocker_driver_name); 4746 if (err) { 4747 dev_err(&pdev->dev, "pci_request_regions failed\n"); 4748 goto err_pci_request_regions; 4749 } 4750 4751 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 4752 if (!err) { 4753 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 4754 if (err) { 4755 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n"); 4756 goto err_pci_set_dma_mask; 4757 } 4758 } else { 4759 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 4760 if (err) { 4761 dev_err(&pdev->dev, "pci_set_dma_mask failed\n"); 4762 goto err_pci_set_dma_mask; 4763 } 4764 } 4765 4766 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) { 4767 dev_err(&pdev->dev, "invalid PCI region size\n"); 4768 err = -EINVAL; 4769 goto err_pci_resource_len_check; 4770 } 4771 4772 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0), 4773 pci_resource_len(pdev, 0)); 4774 if (!rocker->hw_addr) { 4775 dev_err(&pdev->dev, "ioremap failed\n"); 4776 err = -EIO; 4777 goto err_ioremap; 4778 } 4779 pci_set_master(pdev); 4780 4781 rocker->pdev = pdev; 4782 pci_set_drvdata(pdev, rocker); 4783 4784 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT); 4785 4786 err = rocker_msix_init(rocker); 4787 if (err) { 4788 dev_err(&pdev->dev, "MSI-X init failed\n"); 4789 goto err_msix_init; 4790 } 4791 4792 err = rocker_basic_hw_test(rocker); 4793 if (err) { 4794 dev_err(&pdev->dev, "basic hw test failed\n"); 4795 goto err_basic_hw_test; 4796 } 4797 4798 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); 4799 4800 err = rocker_dma_rings_init(rocker); 4801 if (err) 4802 goto err_dma_rings_init; 4803 4804 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), 4805 rocker_cmd_irq_handler, 0, 4806 rocker_driver_name, rocker); 4807 if (err) { 4808 dev_err(&pdev->dev, "cannot assign cmd irq\n"); 4809 goto err_request_cmd_irq; 4810 } 4811 4812 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), 4813 rocker_event_irq_handler, 0, 4814 rocker_driver_name, rocker); 4815 if (err) { 4816 dev_err(&pdev->dev, "cannot assign event irq\n"); 4817 goto err_request_event_irq; 4818 } 4819 4820 rocker->hw.id = rocker_read64(rocker, SWITCH_ID); 4821 4822 err = rocker_init_tbls(rocker); 4823 if (err) { 4824 dev_err(&pdev->dev, "cannot init rocker tables\n"); 4825 goto err_init_tbls; 4826 } 4827 4828 err = rocker_probe_ports(rocker); 4829 if (err) { 4830 dev_err(&pdev->dev, "failed to probe ports\n"); 4831 goto err_probe_ports; 4832 } 4833 4834 dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id); 4835 4836 return 0; 4837 4838err_probe_ports: 4839 rocker_free_tbls(rocker); 4840err_init_tbls: 4841 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); 4842err_request_event_irq: 4843 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); 4844err_request_cmd_irq: 4845 rocker_dma_rings_fini(rocker); 4846err_dma_rings_init: 4847err_basic_hw_test: 4848 rocker_msix_fini(rocker); 4849err_msix_init: 4850 iounmap(rocker->hw_addr); 4851err_ioremap: 4852err_pci_resource_len_check: 4853err_pci_set_dma_mask: 4854 pci_release_regions(pdev); 4855err_pci_request_regions: 4856 pci_disable_device(pdev); 4857err_pci_enable_device: 4858 kfree(rocker); 4859 return err; 4860} 4861 4862static void rocker_remove(struct pci_dev *pdev) 4863{ 4864 struct rocker *rocker = pci_get_drvdata(pdev); 4865 4866 rocker_free_tbls(rocker); 4867 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); 4868 rocker_remove_ports(rocker); 4869 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); 4870 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); 4871 rocker_dma_rings_fini(rocker); 4872 rocker_msix_fini(rocker); 4873 iounmap(rocker->hw_addr); 4874 pci_release_regions(rocker->pdev); 4875 pci_disable_device(rocker->pdev); 4876 kfree(rocker); 4877} 4878 4879static struct pci_driver rocker_pci_driver = { 4880 .name = rocker_driver_name, 4881 .id_table = rocker_pci_id_table, 4882 .probe = rocker_probe, 4883 .remove = rocker_remove, 4884}; 4885 4886/************************************ 4887 * Net device notifier event handler 4888 ************************************/ 4889 4890static bool rocker_port_dev_check(struct net_device *dev) 4891{ 4892 return dev->netdev_ops == &rocker_port_netdev_ops; 4893} 4894 4895static int rocker_port_bridge_join(struct rocker_port *rocker_port, 4896 struct net_device *bridge) 4897{ 4898 int err; 4899 4900 rocker_port_internal_vlan_id_put(rocker_port, 4901 rocker_port->dev->ifindex); 4902 4903 rocker_port->bridge_dev = bridge; 4904 4905 /* Use bridge internal VLAN ID for untagged pkts */ 4906 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0); 4907 if (err) 4908 return err; 4909 rocker_port->internal_vlan_id = 4910 rocker_port_internal_vlan_id_get(rocker_port, 4911 bridge->ifindex); 4912 return rocker_port_vlan(rocker_port, 0, 0); 4913} 4914 4915static int rocker_port_bridge_leave(struct rocker_port *rocker_port) 4916{ 4917 int err; 4918 4919 rocker_port_internal_vlan_id_put(rocker_port, 4920 rocker_port->bridge_dev->ifindex); 4921 4922 rocker_port->bridge_dev = NULL; 4923 4924 /* Use port internal VLAN ID for untagged pkts */ 4925 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0); 4926 if (err) 4927 return err; 4928 rocker_port->internal_vlan_id = 4929 rocker_port_internal_vlan_id_get(rocker_port, 4930 rocker_port->dev->ifindex); 4931 err = rocker_port_vlan(rocker_port, 0, 0); 4932 if (err) 4933 return err; 4934 4935 if (rocker_port->dev->flags & IFF_UP) 4936 err = rocker_port_fwd_enable(rocker_port); 4937 4938 return err; 4939} 4940 4941static int rocker_port_master_changed(struct net_device *dev) 4942{ 4943 struct rocker_port *rocker_port = netdev_priv(dev); 4944 struct net_device *master = netdev_master_upper_dev_get(dev); 4945 int err = 0; 4946 4947 /* There are currently three cases handled here: 4948 * 1. Joining a bridge 4949 * 2. Leaving a previously joined bridge 4950 * 3. Other, e.g. being added to or removed from a bond or openvswitch, 4951 * in which case nothing is done 4952 */ 4953 if (master && master->rtnl_link_ops && 4954 !strcmp(master->rtnl_link_ops->kind, "bridge")) 4955 err = rocker_port_bridge_join(rocker_port, master); 4956 else if (rocker_port_is_bridged(rocker_port)) 4957 err = rocker_port_bridge_leave(rocker_port); 4958 4959 return err; 4960} 4961 4962static int rocker_netdevice_event(struct notifier_block *unused, 4963 unsigned long event, void *ptr) 4964{ 4965 struct net_device *dev; 4966 int err; 4967 4968 switch (event) { 4969 case NETDEV_CHANGEUPPER: 4970 dev = netdev_notifier_info_to_dev(ptr); 4971 if (!rocker_port_dev_check(dev)) 4972 return NOTIFY_DONE; 4973 err = rocker_port_master_changed(dev); 4974 if (err) 4975 netdev_warn(dev, 4976 "failed to reflect master change (err %d)\n", 4977 err); 4978 break; 4979 } 4980 4981 return NOTIFY_DONE; 4982} 4983 4984static struct notifier_block rocker_netdevice_nb __read_mostly = { 4985 .notifier_call = rocker_netdevice_event, 4986}; 4987 4988/************************************ 4989 * Net event notifier event handler 4990 ************************************/ 4991 4992static int rocker_neigh_update(struct net_device *dev, struct neighbour *n) 4993{ 4994 struct rocker_port *rocker_port = netdev_priv(dev); 4995 int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE; 4996 __be32 ip_addr = *(__be32 *)n->primary_key; 4997 4998 return rocker_port_ipv4_neigh(rocker_port, flags, ip_addr, n->ha); 4999} 5000 5001static int rocker_netevent_event(struct notifier_block *unused, 5002 unsigned long event, void *ptr) 5003{ 5004 struct net_device *dev; 5005 struct neighbour *n = ptr; 5006 int err; 5007 5008 switch (event) { 5009 case NETEVENT_NEIGH_UPDATE: 5010 if (n->tbl != &arp_tbl) 5011 return NOTIFY_DONE; 5012 dev = n->dev; 5013 if (!rocker_port_dev_check(dev)) 5014 return NOTIFY_DONE; 5015 err = rocker_neigh_update(dev, n); 5016 if (err) 5017 netdev_warn(dev, 5018 "failed to handle neigh update (err %d)\n", 5019 err); 5020 break; 5021 } 5022 5023 return NOTIFY_DONE; 5024} 5025 5026static struct notifier_block rocker_netevent_nb __read_mostly = { 5027 .notifier_call = rocker_netevent_event, 5028}; 5029 5030/*********************** 5031 * Module init and exit 5032 ***********************/ 5033 5034static int __init rocker_module_init(void) 5035{ 5036 int err; 5037 5038 register_netdevice_notifier(&rocker_netdevice_nb); 5039 register_netevent_notifier(&rocker_netevent_nb); 5040 err = pci_register_driver(&rocker_pci_driver); 5041 if (err) 5042 goto err_pci_register_driver; 5043 return 0; 5044 5045err_pci_register_driver: 5046 unregister_netdevice_notifier(&rocker_netevent_nb); 5047 unregister_netdevice_notifier(&rocker_netdevice_nb); 5048 return err; 5049} 5050 5051static void __exit rocker_module_exit(void) 5052{ 5053 unregister_netevent_notifier(&rocker_netevent_nb); 5054 unregister_netdevice_notifier(&rocker_netdevice_nb); 5055 pci_unregister_driver(&rocker_pci_driver); 5056} 5057 5058module_init(rocker_module_init); 5059module_exit(rocker_module_exit); 5060 5061MODULE_LICENSE("GPL v2"); 5062MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>"); 5063MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>"); 5064MODULE_DESCRIPTION("Rocker switch device driver"); 5065MODULE_DEVICE_TABLE(pci, rocker_pci_id_table); 5066