1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2018-2019 Cisco Systems, Inc. All rights reserved. 3 */ 4 5 #include <stdlib.h> 6 #include <fcntl.h> 7 #include <unistd.h> 8 #include <sys/types.h> 9 #include <sys/socket.h> 10 #include <sys/un.h> 11 #include <sys/ioctl.h> 12 #include <sys/mman.h> 13 #include <linux/if_ether.h> 14 #include <errno.h> 15 #include <sys/eventfd.h> 16 17 #include <rte_version.h> 18 #include <rte_mbuf.h> 19 #include <rte_ether.h> 20 #include <ethdev_driver.h> 21 #include <ethdev_vdev.h> 22 #include <rte_malloc.h> 23 #include <rte_kvargs.h> 24 #include <rte_bus_vdev.h> 25 #include <rte_string_fns.h> 26 #include <rte_errno.h> 27 #include <rte_memory.h> 28 #include <rte_memzone.h> 29 #include <rte_eal_memconfig.h> 30 31 #include "rte_eth_memif.h" 32 #include "memif_socket.h" 33 34 #define ETH_MEMIF_ID_ARG "id" 35 #define ETH_MEMIF_ROLE_ARG "role" 36 #define ETH_MEMIF_PKT_BUFFER_SIZE_ARG "bsize" 37 #define ETH_MEMIF_RING_SIZE_ARG "rsize" 38 #define ETH_MEMIF_SOCKET_ARG "socket" 39 #define ETH_MEMIF_SOCKET_ABSTRACT_ARG "socket-abstract" 40 #define ETH_MEMIF_MAC_ARG "mac" 41 #define ETH_MEMIF_ZC_ARG "zero-copy" 42 #define ETH_MEMIF_SECRET_ARG "secret" 43 44 static const char * const valid_arguments[] = { 45 ETH_MEMIF_ID_ARG, 46 ETH_MEMIF_ROLE_ARG, 47 ETH_MEMIF_PKT_BUFFER_SIZE_ARG, 48 ETH_MEMIF_RING_SIZE_ARG, 49 ETH_MEMIF_SOCKET_ARG, 50 ETH_MEMIF_SOCKET_ABSTRACT_ARG, 51 ETH_MEMIF_MAC_ARG, 52 ETH_MEMIF_ZC_ARG, 53 ETH_MEMIF_SECRET_ARG, 54 NULL 55 }; 56 57 static const struct rte_eth_link pmd_link = { 58 .link_speed = ETH_SPEED_NUM_10G, 59 .link_duplex = ETH_LINK_FULL_DUPLEX, 60 .link_status = ETH_LINK_DOWN, 61 .link_autoneg = ETH_LINK_AUTONEG 62 }; 63 64 #define MEMIF_MP_SEND_REGION "memif_mp_send_region" 65 66 67 static int memif_region_init_zc(const struct rte_memseg_list *msl, 68 const struct rte_memseg *ms, void *arg); 69 70 const char * 71 memif_version(void) 72 { 73 return ("memif-" RTE_STR(MEMIF_VERSION_MAJOR) "." RTE_STR(MEMIF_VERSION_MINOR)); 74 } 75 76 /* Message header to synchronize regions */ 77 struct mp_region_msg { 78 char port_name[RTE_DEV_NAME_MAX_LEN]; 79 memif_region_index_t idx; 80 memif_region_size_t size; 81 }; 82 83 static int 84 memif_mp_send_region(const struct rte_mp_msg *msg, const void *peer) 85 { 86 struct rte_eth_dev *dev; 87 struct pmd_process_private *proc_private; 88 const struct mp_region_msg *msg_param = (const struct mp_region_msg *)msg->param; 89 struct rte_mp_msg reply; 90 struct mp_region_msg *reply_param = (struct mp_region_msg *)reply.param; 91 uint16_t port_id; 92 int ret; 93 94 /* Get requested port */ 95 ret = rte_eth_dev_get_port_by_name(msg_param->port_name, &port_id); 96 if (ret) { 97 MIF_LOG(ERR, "Failed to get port id for %s", 98 msg_param->port_name); 99 return -1; 100 } 101 dev = &rte_eth_devices[port_id]; 102 proc_private = dev->process_private; 103 104 memset(&reply, 0, sizeof(reply)); 105 strlcpy(reply.name, msg->name, sizeof(reply.name)); 106 reply_param->idx = msg_param->idx; 107 if (proc_private->regions[msg_param->idx] != NULL) { 108 reply_param->size = proc_private->regions[msg_param->idx]->region_size; 109 reply.fds[0] = proc_private->regions[msg_param->idx]->fd; 110 reply.num_fds = 1; 111 } 112 reply.len_param = sizeof(*reply_param); 113 if (rte_mp_reply(&reply, peer) < 0) { 114 MIF_LOG(ERR, "Failed to reply to an add region request"); 115 return -1; 116 } 117 118 return 0; 119 } 120 121 /* 122 * Request regions 123 * Called by secondary process, when ports link status goes up. 124 */ 125 static int 126 memif_mp_request_regions(struct rte_eth_dev *dev) 127 { 128 int ret, i; 129 struct timespec timeout = {.tv_sec = 5, .tv_nsec = 0}; 130 struct rte_mp_msg msg, *reply; 131 struct rte_mp_reply replies; 132 struct mp_region_msg *msg_param = (struct mp_region_msg *)msg.param; 133 struct mp_region_msg *reply_param; 134 struct memif_region *r; 135 struct pmd_process_private *proc_private = dev->process_private; 136 struct pmd_internals *pmd = dev->data->dev_private; 137 /* in case of zero-copy client, only request region 0 */ 138 uint16_t max_region_num = (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) ? 139 1 : ETH_MEMIF_MAX_REGION_NUM; 140 141 MIF_LOG(DEBUG, "Requesting memory regions"); 142 143 for (i = 0; i < max_region_num; i++) { 144 /* Prepare the message */ 145 memset(&msg, 0, sizeof(msg)); 146 strlcpy(msg.name, MEMIF_MP_SEND_REGION, sizeof(msg.name)); 147 strlcpy(msg_param->port_name, dev->data->name, 148 sizeof(msg_param->port_name)); 149 msg_param->idx = i; 150 msg.len_param = sizeof(*msg_param); 151 152 /* Send message */ 153 ret = rte_mp_request_sync(&msg, &replies, &timeout); 154 if (ret < 0 || replies.nb_received != 1) { 155 MIF_LOG(ERR, "Failed to send mp msg: %d", 156 rte_errno); 157 return -1; 158 } 159 160 reply = &replies.msgs[0]; 161 reply_param = (struct mp_region_msg *)reply->param; 162 163 if (reply_param->size > 0) { 164 r = rte_zmalloc("region", sizeof(struct memif_region), 0); 165 if (r == NULL) { 166 MIF_LOG(ERR, "Failed to alloc memif region."); 167 free(reply); 168 return -ENOMEM; 169 } 170 r->region_size = reply_param->size; 171 if (reply->num_fds < 1) { 172 MIF_LOG(ERR, "Missing file descriptor."); 173 free(reply); 174 return -1; 175 } 176 r->fd = reply->fds[0]; 177 r->addr = NULL; 178 179 proc_private->regions[reply_param->idx] = r; 180 proc_private->regions_num++; 181 } 182 free(reply); 183 } 184 185 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 186 ret = rte_memseg_walk(memif_region_init_zc, (void *)proc_private); 187 if (ret < 0) 188 return ret; 189 } 190 191 return memif_connect(dev); 192 } 193 194 static int 195 memif_dev_info(struct rte_eth_dev *dev __rte_unused, struct rte_eth_dev_info *dev_info) 196 { 197 dev_info->max_mac_addrs = 1; 198 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN; 199 dev_info->max_rx_queues = ETH_MEMIF_MAX_NUM_Q_PAIRS; 200 dev_info->max_tx_queues = ETH_MEMIF_MAX_NUM_Q_PAIRS; 201 dev_info->min_rx_bufsize = 0; 202 203 return 0; 204 } 205 206 static memif_ring_t * 207 memif_get_ring(struct pmd_internals *pmd, struct pmd_process_private *proc_private, 208 memif_ring_type_t type, uint16_t ring_num) 209 { 210 /* rings only in region 0 */ 211 void *p = proc_private->regions[0]->addr; 212 int ring_size = sizeof(memif_ring_t) + sizeof(memif_desc_t) * 213 (1 << pmd->run.log2_ring_size); 214 215 p = (uint8_t *)p + (ring_num + type * pmd->run.num_c2s_rings) * ring_size; 216 217 return (memif_ring_t *)p; 218 } 219 220 static memif_region_offset_t 221 memif_get_ring_offset(struct rte_eth_dev *dev, struct memif_queue *mq, 222 memif_ring_type_t type, uint16_t num) 223 { 224 struct pmd_internals *pmd = dev->data->dev_private; 225 struct pmd_process_private *proc_private = dev->process_private; 226 227 return ((uint8_t *)memif_get_ring(pmd, proc_private, type, num) - 228 (uint8_t *)proc_private->regions[mq->region]->addr); 229 } 230 231 static memif_ring_t * 232 memif_get_ring_from_queue(struct pmd_process_private *proc_private, 233 struct memif_queue *mq) 234 { 235 struct memif_region *r; 236 237 r = proc_private->regions[mq->region]; 238 if (r == NULL) 239 return NULL; 240 241 return (memif_ring_t *)((uint8_t *)r->addr + mq->ring_offset); 242 } 243 244 static void * 245 memif_get_buffer(struct pmd_process_private *proc_private, memif_desc_t *d) 246 { 247 return ((uint8_t *)proc_private->regions[d->region]->addr + d->offset); 248 } 249 250 /* Free mbufs received by server */ 251 static void 252 memif_free_stored_mbufs(struct pmd_process_private *proc_private, struct memif_queue *mq) 253 { 254 uint16_t cur_tail; 255 uint16_t mask = (1 << mq->log2_ring_size) - 1; 256 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq); 257 258 /* FIXME: improve performance */ 259 /* The ring->tail acts as a guard variable between Tx and Rx 260 * threads, so using load-acquire pairs with store-release 261 * in function eth_memif_rx for C2S queues. 262 */ 263 cur_tail = __atomic_load_n(&ring->tail, __ATOMIC_ACQUIRE); 264 while (mq->last_tail != cur_tail) { 265 RTE_MBUF_PREFETCH_TO_FREE(mq->buffers[(mq->last_tail + 1) & mask]); 266 /* Decrement refcnt and free mbuf. (current segment) */ 267 rte_mbuf_refcnt_update(mq->buffers[mq->last_tail & mask], -1); 268 rte_pktmbuf_free_seg(mq->buffers[mq->last_tail & mask]); 269 mq->last_tail++; 270 } 271 } 272 273 static int 274 memif_pktmbuf_chain(struct rte_mbuf *head, struct rte_mbuf *cur_tail, 275 struct rte_mbuf *tail) 276 { 277 /* Check for number-of-segments-overflow */ 278 if (unlikely(head->nb_segs + tail->nb_segs > RTE_MBUF_MAX_NB_SEGS)) 279 return -EOVERFLOW; 280 281 /* Chain 'tail' onto the old tail */ 282 cur_tail->next = tail; 283 284 /* accumulate number of segments and total length. */ 285 head->nb_segs = (uint16_t)(head->nb_segs + tail->nb_segs); 286 287 tail->pkt_len = tail->data_len; 288 head->pkt_len += tail->pkt_len; 289 290 return 0; 291 } 292 293 static uint16_t 294 eth_memif_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) 295 { 296 struct memif_queue *mq = queue; 297 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private; 298 struct pmd_process_private *proc_private = 299 rte_eth_devices[mq->in_port].process_private; 300 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq); 301 uint16_t cur_slot, last_slot, n_slots, ring_size, mask, s0; 302 uint16_t n_rx_pkts = 0; 303 uint16_t mbuf_size = rte_pktmbuf_data_room_size(mq->mempool) - 304 RTE_PKTMBUF_HEADROOM; 305 uint16_t src_len, src_off, dst_len, dst_off, cp_len; 306 memif_ring_type_t type = mq->type; 307 memif_desc_t *d0; 308 struct rte_mbuf *mbuf, *mbuf_head, *mbuf_tail; 309 uint64_t b; 310 ssize_t size __rte_unused; 311 uint16_t head; 312 int ret; 313 struct rte_eth_link link; 314 315 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0)) 316 return 0; 317 if (unlikely(ring == NULL)) { 318 /* Secondary process will attempt to request regions. */ 319 ret = rte_eth_link_get(mq->in_port, &link); 320 if (ret < 0) 321 MIF_LOG(ERR, "Failed to get port %u link info: %s", 322 mq->in_port, rte_strerror(-ret)); 323 return 0; 324 } 325 326 /* consume interrupt */ 327 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) 328 size = read(mq->intr_handle.fd, &b, sizeof(b)); 329 330 ring_size = 1 << mq->log2_ring_size; 331 mask = ring_size - 1; 332 333 if (type == MEMIF_RING_C2S) { 334 cur_slot = mq->last_head; 335 last_slot = __atomic_load_n(&ring->head, __ATOMIC_ACQUIRE); 336 } else { 337 cur_slot = mq->last_tail; 338 last_slot = __atomic_load_n(&ring->tail, __ATOMIC_ACQUIRE); 339 } 340 341 if (cur_slot == last_slot) 342 goto refill; 343 n_slots = last_slot - cur_slot; 344 345 while (n_slots && n_rx_pkts < nb_pkts) { 346 mbuf_head = rte_pktmbuf_alloc(mq->mempool); 347 if (unlikely(mbuf_head == NULL)) 348 goto no_free_bufs; 349 mbuf = mbuf_head; 350 mbuf->port = mq->in_port; 351 352 next_slot: 353 s0 = cur_slot & mask; 354 d0 = &ring->desc[s0]; 355 356 src_len = d0->length; 357 dst_off = 0; 358 src_off = 0; 359 360 do { 361 dst_len = mbuf_size - dst_off; 362 if (dst_len == 0) { 363 dst_off = 0; 364 dst_len = mbuf_size; 365 366 /* store pointer to tail */ 367 mbuf_tail = mbuf; 368 mbuf = rte_pktmbuf_alloc(mq->mempool); 369 if (unlikely(mbuf == NULL)) 370 goto no_free_bufs; 371 mbuf->port = mq->in_port; 372 ret = memif_pktmbuf_chain(mbuf_head, mbuf_tail, mbuf); 373 if (unlikely(ret < 0)) { 374 MIF_LOG(ERR, "number-of-segments-overflow"); 375 rte_pktmbuf_free(mbuf); 376 goto no_free_bufs; 377 } 378 } 379 cp_len = RTE_MIN(dst_len, src_len); 380 381 rte_pktmbuf_data_len(mbuf) += cp_len; 382 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf); 383 if (mbuf != mbuf_head) 384 rte_pktmbuf_pkt_len(mbuf_head) += cp_len; 385 386 memcpy(rte_pktmbuf_mtod_offset(mbuf, void *, dst_off), 387 (uint8_t *)memif_get_buffer(proc_private, d0) + src_off, 388 cp_len); 389 390 src_off += cp_len; 391 dst_off += cp_len; 392 src_len -= cp_len; 393 } while (src_len); 394 395 cur_slot++; 396 n_slots--; 397 398 if (d0->flags & MEMIF_DESC_FLAG_NEXT) 399 goto next_slot; 400 401 mq->n_bytes += rte_pktmbuf_pkt_len(mbuf_head); 402 *bufs++ = mbuf_head; 403 n_rx_pkts++; 404 } 405 406 no_free_bufs: 407 if (type == MEMIF_RING_C2S) { 408 __atomic_store_n(&ring->tail, cur_slot, __ATOMIC_RELEASE); 409 mq->last_head = cur_slot; 410 } else { 411 mq->last_tail = cur_slot; 412 } 413 414 refill: 415 if (type == MEMIF_RING_S2C) { 416 /* ring->head is updated by the receiver and this function 417 * is called in the context of receiver thread. The loads in 418 * the receiver do not need to synchronize with its own stores. 419 */ 420 head = __atomic_load_n(&ring->head, __ATOMIC_RELAXED); 421 n_slots = ring_size - head + mq->last_tail; 422 423 while (n_slots--) { 424 s0 = head++ & mask; 425 d0 = &ring->desc[s0]; 426 d0->length = pmd->run.pkt_buffer_size; 427 } 428 __atomic_store_n(&ring->head, head, __ATOMIC_RELEASE); 429 } 430 431 mq->n_pkts += n_rx_pkts; 432 return n_rx_pkts; 433 } 434 435 static uint16_t 436 eth_memif_rx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) 437 { 438 struct memif_queue *mq = queue; 439 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private; 440 struct pmd_process_private *proc_private = 441 rte_eth_devices[mq->in_port].process_private; 442 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq); 443 uint16_t cur_slot, last_slot, n_slots, ring_size, mask, s0, head; 444 uint16_t n_rx_pkts = 0; 445 memif_desc_t *d0; 446 struct rte_mbuf *mbuf, *mbuf_tail; 447 struct rte_mbuf *mbuf_head = NULL; 448 int ret; 449 struct rte_eth_link link; 450 451 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0)) 452 return 0; 453 if (unlikely(ring == NULL)) { 454 /* Secondary process will attempt to request regions. */ 455 rte_eth_link_get(mq->in_port, &link); 456 return 0; 457 } 458 459 /* consume interrupt */ 460 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) { 461 uint64_t b; 462 ssize_t size __rte_unused; 463 size = read(mq->intr_handle.fd, &b, sizeof(b)); 464 } 465 466 ring_size = 1 << mq->log2_ring_size; 467 mask = ring_size - 1; 468 469 cur_slot = mq->last_tail; 470 /* The ring->tail acts as a guard variable between Tx and Rx 471 * threads, so using load-acquire pairs with store-release 472 * to synchronize it between threads. 473 */ 474 last_slot = __atomic_load_n(&ring->tail, __ATOMIC_ACQUIRE); 475 if (cur_slot == last_slot) 476 goto refill; 477 n_slots = last_slot - cur_slot; 478 479 while (n_slots && n_rx_pkts < nb_pkts) { 480 s0 = cur_slot & mask; 481 482 d0 = &ring->desc[s0]; 483 mbuf_head = mq->buffers[s0]; 484 mbuf = mbuf_head; 485 486 next_slot: 487 /* prefetch next descriptor */ 488 if (n_rx_pkts + 1 < nb_pkts) 489 rte_prefetch0(&ring->desc[(cur_slot + 1) & mask]); 490 491 mbuf->port = mq->in_port; 492 rte_pktmbuf_data_len(mbuf) = d0->length; 493 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf); 494 495 mq->n_bytes += rte_pktmbuf_data_len(mbuf); 496 497 cur_slot++; 498 n_slots--; 499 if (d0->flags & MEMIF_DESC_FLAG_NEXT) { 500 s0 = cur_slot & mask; 501 d0 = &ring->desc[s0]; 502 mbuf_tail = mbuf; 503 mbuf = mq->buffers[s0]; 504 ret = memif_pktmbuf_chain(mbuf_head, mbuf_tail, mbuf); 505 if (unlikely(ret < 0)) { 506 MIF_LOG(ERR, "number-of-segments-overflow"); 507 goto refill; 508 } 509 goto next_slot; 510 } 511 512 *bufs++ = mbuf_head; 513 n_rx_pkts++; 514 } 515 516 mq->last_tail = cur_slot; 517 518 /* Supply server with new buffers */ 519 refill: 520 /* ring->head is updated by the receiver and this function 521 * is called in the context of receiver thread. The loads in 522 * the receiver do not need to synchronize with its own stores. 523 */ 524 head = __atomic_load_n(&ring->head, __ATOMIC_RELAXED); 525 n_slots = ring_size - head + mq->last_tail; 526 527 if (n_slots < 32) 528 goto no_free_mbufs; 529 530 ret = rte_pktmbuf_alloc_bulk(mq->mempool, &mq->buffers[head & mask], n_slots); 531 if (unlikely(ret < 0)) 532 goto no_free_mbufs; 533 534 while (n_slots--) { 535 s0 = head++ & mask; 536 if (n_slots > 0) 537 rte_prefetch0(mq->buffers[head & mask]); 538 d0 = &ring->desc[s0]; 539 /* store buffer header */ 540 mbuf = mq->buffers[s0]; 541 /* populate descriptor */ 542 d0->length = rte_pktmbuf_data_room_size(mq->mempool) - 543 RTE_PKTMBUF_HEADROOM; 544 d0->region = 1; 545 d0->offset = rte_pktmbuf_mtod(mbuf, uint8_t *) - 546 (uint8_t *)proc_private->regions[d0->region]->addr; 547 } 548 no_free_mbufs: 549 /* The ring->head acts as a guard variable between Tx and Rx 550 * threads, so using store-release pairs with load-acquire 551 * in function eth_memif_tx. 552 */ 553 __atomic_store_n(&ring->head, head, __ATOMIC_RELEASE); 554 555 mq->n_pkts += n_rx_pkts; 556 557 return n_rx_pkts; 558 } 559 560 static uint16_t 561 eth_memif_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) 562 { 563 struct memif_queue *mq = queue; 564 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private; 565 struct pmd_process_private *proc_private = 566 rte_eth_devices[mq->in_port].process_private; 567 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq); 568 uint16_t slot, saved_slot, n_free, ring_size, mask, n_tx_pkts = 0; 569 uint16_t src_len, src_off, dst_len, dst_off, cp_len; 570 memif_ring_type_t type = mq->type; 571 memif_desc_t *d0; 572 struct rte_mbuf *mbuf; 573 struct rte_mbuf *mbuf_head; 574 uint64_t a; 575 ssize_t size; 576 struct rte_eth_link link; 577 578 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0)) 579 return 0; 580 if (unlikely(ring == NULL)) { 581 int ret; 582 583 /* Secondary process will attempt to request regions. */ 584 ret = rte_eth_link_get(mq->in_port, &link); 585 if (ret < 0) 586 MIF_LOG(ERR, "Failed to get port %u link info: %s", 587 mq->in_port, rte_strerror(-ret)); 588 return 0; 589 } 590 591 ring_size = 1 << mq->log2_ring_size; 592 mask = ring_size - 1; 593 594 if (type == MEMIF_RING_C2S) { 595 /* For C2S queues ring->head is updated by the sender and 596 * this function is called in the context of sending thread. 597 * The loads in the sender do not need to synchronize with 598 * its own stores. Hence, the following load can be a 599 * relaxed load. 600 */ 601 slot = __atomic_load_n(&ring->head, __ATOMIC_RELAXED); 602 n_free = ring_size - slot + 603 __atomic_load_n(&ring->tail, __ATOMIC_ACQUIRE); 604 } else { 605 /* For S2C queues ring->tail is updated by the sender and 606 * this function is called in the context of sending thread. 607 * The loads in the sender do not need to synchronize with 608 * its own stores. Hence, the following load can be a 609 * relaxed load. 610 */ 611 slot = __atomic_load_n(&ring->tail, __ATOMIC_RELAXED); 612 n_free = __atomic_load_n(&ring->head, __ATOMIC_ACQUIRE) - slot; 613 } 614 615 while (n_tx_pkts < nb_pkts && n_free) { 616 mbuf_head = *bufs++; 617 mbuf = mbuf_head; 618 619 saved_slot = slot; 620 d0 = &ring->desc[slot & mask]; 621 dst_off = 0; 622 dst_len = (type == MEMIF_RING_C2S) ? 623 pmd->run.pkt_buffer_size : d0->length; 624 625 next_in_chain: 626 src_off = 0; 627 src_len = rte_pktmbuf_data_len(mbuf); 628 629 while (src_len) { 630 if (dst_len == 0) { 631 if (n_free) { 632 slot++; 633 n_free--; 634 d0->flags |= MEMIF_DESC_FLAG_NEXT; 635 d0 = &ring->desc[slot & mask]; 636 dst_off = 0; 637 dst_len = (type == MEMIF_RING_C2S) ? 638 pmd->run.pkt_buffer_size : d0->length; 639 d0->flags = 0; 640 } else { 641 slot = saved_slot; 642 goto no_free_slots; 643 } 644 } 645 cp_len = RTE_MIN(dst_len, src_len); 646 647 memcpy((uint8_t *)memif_get_buffer(proc_private, d0) + dst_off, 648 rte_pktmbuf_mtod_offset(mbuf, void *, src_off), 649 cp_len); 650 651 mq->n_bytes += cp_len; 652 src_off += cp_len; 653 dst_off += cp_len; 654 src_len -= cp_len; 655 dst_len -= cp_len; 656 657 d0->length = dst_off; 658 } 659 660 if (rte_pktmbuf_is_contiguous(mbuf) == 0) { 661 mbuf = mbuf->next; 662 goto next_in_chain; 663 } 664 665 n_tx_pkts++; 666 slot++; 667 n_free--; 668 rte_pktmbuf_free(mbuf_head); 669 } 670 671 no_free_slots: 672 if (type == MEMIF_RING_C2S) 673 __atomic_store_n(&ring->head, slot, __ATOMIC_RELEASE); 674 else 675 __atomic_store_n(&ring->tail, slot, __ATOMIC_RELEASE); 676 677 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) { 678 a = 1; 679 size = write(mq->intr_handle.fd, &a, sizeof(a)); 680 if (unlikely(size < 0)) { 681 MIF_LOG(WARNING, 682 "Failed to send interrupt. %s", strerror(errno)); 683 } 684 } 685 686 mq->n_pkts += n_tx_pkts; 687 return n_tx_pkts; 688 } 689 690 691 static int 692 memif_tx_one_zc(struct pmd_process_private *proc_private, struct memif_queue *mq, 693 memif_ring_t *ring, struct rte_mbuf *mbuf, const uint16_t mask, 694 uint16_t slot, uint16_t n_free) 695 { 696 memif_desc_t *d0; 697 int used_slots = 1; 698 699 next_in_chain: 700 /* store pointer to mbuf to free it later */ 701 mq->buffers[slot & mask] = mbuf; 702 /* Increment refcnt to make sure the buffer is not freed before server 703 * receives it. (current segment) 704 */ 705 rte_mbuf_refcnt_update(mbuf, 1); 706 /* populate descriptor */ 707 d0 = &ring->desc[slot & mask]; 708 d0->length = rte_pktmbuf_data_len(mbuf); 709 /* FIXME: get region index */ 710 d0->region = 1; 711 d0->offset = rte_pktmbuf_mtod(mbuf, uint8_t *) - 712 (uint8_t *)proc_private->regions[d0->region]->addr; 713 d0->flags = 0; 714 715 /* check if buffer is chained */ 716 if (rte_pktmbuf_is_contiguous(mbuf) == 0) { 717 if (n_free < 2) 718 return 0; 719 /* mark buffer as chained */ 720 d0->flags |= MEMIF_DESC_FLAG_NEXT; 721 /* advance mbuf */ 722 mbuf = mbuf->next; 723 /* update counters */ 724 used_slots++; 725 slot++; 726 n_free--; 727 goto next_in_chain; 728 } 729 return used_slots; 730 } 731 732 static uint16_t 733 eth_memif_tx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) 734 { 735 struct memif_queue *mq = queue; 736 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private; 737 struct pmd_process_private *proc_private = 738 rte_eth_devices[mq->in_port].process_private; 739 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq); 740 uint16_t slot, n_free, ring_size, mask, n_tx_pkts = 0; 741 struct rte_eth_link link; 742 743 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0)) 744 return 0; 745 if (unlikely(ring == NULL)) { 746 /* Secondary process will attempt to request regions. */ 747 rte_eth_link_get(mq->in_port, &link); 748 return 0; 749 } 750 751 ring_size = 1 << mq->log2_ring_size; 752 mask = ring_size - 1; 753 754 /* free mbufs received by server */ 755 memif_free_stored_mbufs(proc_private, mq); 756 757 /* ring type always MEMIF_RING_C2S */ 758 /* For C2S queues ring->head is updated by the sender and 759 * this function is called in the context of sending thread. 760 * The loads in the sender do not need to synchronize with 761 * its own stores. Hence, the following load can be a 762 * relaxed load. 763 */ 764 slot = __atomic_load_n(&ring->head, __ATOMIC_RELAXED); 765 n_free = ring_size - slot + mq->last_tail; 766 767 int used_slots; 768 769 while (n_free && (n_tx_pkts < nb_pkts)) { 770 while ((n_free > 4) && ((nb_pkts - n_tx_pkts) > 4)) { 771 if ((nb_pkts - n_tx_pkts) > 8) { 772 rte_prefetch0(*bufs + 4); 773 rte_prefetch0(*bufs + 5); 774 rte_prefetch0(*bufs + 6); 775 rte_prefetch0(*bufs + 7); 776 } 777 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 778 mask, slot, n_free); 779 if (unlikely(used_slots < 1)) 780 goto no_free_slots; 781 n_tx_pkts++; 782 slot += used_slots; 783 n_free -= used_slots; 784 785 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 786 mask, slot, n_free); 787 if (unlikely(used_slots < 1)) 788 goto no_free_slots; 789 n_tx_pkts++; 790 slot += used_slots; 791 n_free -= used_slots; 792 793 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 794 mask, slot, n_free); 795 if (unlikely(used_slots < 1)) 796 goto no_free_slots; 797 n_tx_pkts++; 798 slot += used_slots; 799 n_free -= used_slots; 800 801 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 802 mask, slot, n_free); 803 if (unlikely(used_slots < 1)) 804 goto no_free_slots; 805 n_tx_pkts++; 806 slot += used_slots; 807 n_free -= used_slots; 808 } 809 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 810 mask, slot, n_free); 811 if (unlikely(used_slots < 1)) 812 goto no_free_slots; 813 n_tx_pkts++; 814 slot += used_slots; 815 n_free -= used_slots; 816 } 817 818 no_free_slots: 819 /* ring type always MEMIF_RING_C2S */ 820 /* The ring->head acts as a guard variable between Tx and Rx 821 * threads, so using store-release pairs with load-acquire 822 * in function eth_memif_rx for C2S rings. 823 */ 824 __atomic_store_n(&ring->head, slot, __ATOMIC_RELEASE); 825 826 /* Send interrupt, if enabled. */ 827 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) { 828 uint64_t a = 1; 829 ssize_t size = write(mq->intr_handle.fd, &a, sizeof(a)); 830 if (unlikely(size < 0)) { 831 MIF_LOG(WARNING, 832 "Failed to send interrupt. %s", strerror(errno)); 833 } 834 } 835 836 /* increment queue counters */ 837 mq->n_pkts += n_tx_pkts; 838 839 return n_tx_pkts; 840 } 841 842 void 843 memif_free_regions(struct rte_eth_dev *dev) 844 { 845 struct pmd_process_private *proc_private = dev->process_private; 846 struct pmd_internals *pmd = dev->data->dev_private; 847 int i; 848 struct memif_region *r; 849 850 /* regions are allocated contiguously, so it's 851 * enough to loop until 'proc_private->regions_num' 852 */ 853 for (i = 0; i < proc_private->regions_num; i++) { 854 r = proc_private->regions[i]; 855 if (r != NULL) { 856 /* This is memzone */ 857 if (i > 0 && (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY)) { 858 r->addr = NULL; 859 if (r->fd > 0) 860 close(r->fd); 861 } 862 if (r->addr != NULL) { 863 munmap(r->addr, r->region_size); 864 if (r->fd > 0) { 865 close(r->fd); 866 r->fd = -1; 867 } 868 } 869 rte_free(r); 870 proc_private->regions[i] = NULL; 871 } 872 } 873 proc_private->regions_num = 0; 874 } 875 876 static int 877 memif_region_init_zc(const struct rte_memseg_list *msl, const struct rte_memseg *ms, 878 void *arg) 879 { 880 struct pmd_process_private *proc_private = (struct pmd_process_private *)arg; 881 struct memif_region *r; 882 883 if (proc_private->regions_num < 1) { 884 MIF_LOG(ERR, "Missing descriptor region"); 885 return -1; 886 } 887 888 r = proc_private->regions[proc_private->regions_num - 1]; 889 890 if (r->addr != msl->base_va) 891 r = proc_private->regions[++proc_private->regions_num - 1]; 892 893 if (r == NULL) { 894 r = rte_zmalloc("region", sizeof(struct memif_region), 0); 895 if (r == NULL) { 896 MIF_LOG(ERR, "Failed to alloc memif region."); 897 return -ENOMEM; 898 } 899 900 r->addr = msl->base_va; 901 r->region_size = ms->len; 902 r->fd = rte_memseg_get_fd(ms); 903 if (r->fd < 0) 904 return -1; 905 r->pkt_buffer_offset = 0; 906 907 proc_private->regions[proc_private->regions_num - 1] = r; 908 } else { 909 r->region_size += ms->len; 910 } 911 912 return 0; 913 } 914 915 static int 916 memif_region_init_shm(struct rte_eth_dev *dev, uint8_t has_buffers) 917 { 918 struct pmd_internals *pmd = dev->data->dev_private; 919 struct pmd_process_private *proc_private = dev->process_private; 920 char shm_name[ETH_MEMIF_SHM_NAME_SIZE]; 921 int ret = 0; 922 struct memif_region *r; 923 924 if (proc_private->regions_num >= ETH_MEMIF_MAX_REGION_NUM) { 925 MIF_LOG(ERR, "Too many regions."); 926 return -1; 927 } 928 929 r = rte_zmalloc("region", sizeof(struct memif_region), 0); 930 if (r == NULL) { 931 MIF_LOG(ERR, "Failed to alloc memif region."); 932 return -ENOMEM; 933 } 934 935 /* calculate buffer offset */ 936 r->pkt_buffer_offset = (pmd->run.num_c2s_rings + pmd->run.num_s2c_rings) * 937 (sizeof(memif_ring_t) + sizeof(memif_desc_t) * 938 (1 << pmd->run.log2_ring_size)); 939 940 r->region_size = r->pkt_buffer_offset; 941 /* if region has buffers, add buffers size to region_size */ 942 if (has_buffers == 1) 943 r->region_size += (uint32_t)(pmd->run.pkt_buffer_size * 944 (1 << pmd->run.log2_ring_size) * 945 (pmd->run.num_c2s_rings + 946 pmd->run.num_s2c_rings)); 947 948 memset(shm_name, 0, sizeof(char) * ETH_MEMIF_SHM_NAME_SIZE); 949 snprintf(shm_name, ETH_MEMIF_SHM_NAME_SIZE, "memif_region_%d", 950 proc_private->regions_num); 951 952 r->fd = memfd_create(shm_name, MFD_ALLOW_SEALING); 953 if (r->fd < 0) { 954 MIF_LOG(ERR, "Failed to create shm file: %s.", strerror(errno)); 955 ret = -1; 956 goto error; 957 } 958 959 ret = fcntl(r->fd, F_ADD_SEALS, F_SEAL_SHRINK); 960 if (ret < 0) { 961 MIF_LOG(ERR, "Failed to add seals to shm file: %s.", strerror(errno)); 962 goto error; 963 } 964 965 ret = ftruncate(r->fd, r->region_size); 966 if (ret < 0) { 967 MIF_LOG(ERR, "Failed to truncate shm file: %s.", strerror(errno)); 968 goto error; 969 } 970 971 r->addr = mmap(NULL, r->region_size, PROT_READ | 972 PROT_WRITE, MAP_SHARED, r->fd, 0); 973 if (r->addr == MAP_FAILED) { 974 MIF_LOG(ERR, "Failed to mmap shm region: %s.", strerror(ret)); 975 ret = -1; 976 goto error; 977 } 978 979 proc_private->regions[proc_private->regions_num] = r; 980 proc_private->regions_num++; 981 982 return ret; 983 984 error: 985 if (r->fd > 0) 986 close(r->fd); 987 r->fd = -1; 988 989 return ret; 990 } 991 992 static int 993 memif_regions_init(struct rte_eth_dev *dev) 994 { 995 struct pmd_internals *pmd = dev->data->dev_private; 996 int ret; 997 998 /* 999 * Zero-copy exposes dpdk memory. 1000 * Each memseg list will be represented by memif region. 1001 * Zero-copy regions indexing: memseg list idx + 1, 1002 * as we already have region 0 reserved for descriptors. 1003 */ 1004 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 1005 /* create region idx 0 containing descriptors */ 1006 ret = memif_region_init_shm(dev, 0); 1007 if (ret < 0) 1008 return ret; 1009 ret = rte_memseg_walk(memif_region_init_zc, (void *)dev->process_private); 1010 if (ret < 0) 1011 return ret; 1012 } else { 1013 /* create one memory region contaning rings and buffers */ 1014 ret = memif_region_init_shm(dev, /* has buffers */ 1); 1015 if (ret < 0) 1016 return ret; 1017 } 1018 1019 return 0; 1020 } 1021 1022 static void 1023 memif_init_rings(struct rte_eth_dev *dev) 1024 { 1025 struct pmd_internals *pmd = dev->data->dev_private; 1026 struct pmd_process_private *proc_private = dev->process_private; 1027 memif_ring_t *ring; 1028 int i, j; 1029 uint16_t slot; 1030 1031 for (i = 0; i < pmd->run.num_c2s_rings; i++) { 1032 ring = memif_get_ring(pmd, proc_private, MEMIF_RING_C2S, i); 1033 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED); 1034 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED); 1035 ring->cookie = MEMIF_COOKIE; 1036 ring->flags = 0; 1037 1038 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) 1039 continue; 1040 1041 for (j = 0; j < (1 << pmd->run.log2_ring_size); j++) { 1042 slot = i * (1 << pmd->run.log2_ring_size) + j; 1043 ring->desc[j].region = 0; 1044 ring->desc[j].offset = 1045 proc_private->regions[0]->pkt_buffer_offset + 1046 (uint32_t)(slot * pmd->run.pkt_buffer_size); 1047 ring->desc[j].length = pmd->run.pkt_buffer_size; 1048 } 1049 } 1050 1051 for (i = 0; i < pmd->run.num_s2c_rings; i++) { 1052 ring = memif_get_ring(pmd, proc_private, MEMIF_RING_S2C, i); 1053 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED); 1054 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED); 1055 ring->cookie = MEMIF_COOKIE; 1056 ring->flags = 0; 1057 1058 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) 1059 continue; 1060 1061 for (j = 0; j < (1 << pmd->run.log2_ring_size); j++) { 1062 slot = (i + pmd->run.num_c2s_rings) * 1063 (1 << pmd->run.log2_ring_size) + j; 1064 ring->desc[j].region = 0; 1065 ring->desc[j].offset = 1066 proc_private->regions[0]->pkt_buffer_offset + 1067 (uint32_t)(slot * pmd->run.pkt_buffer_size); 1068 ring->desc[j].length = pmd->run.pkt_buffer_size; 1069 } 1070 } 1071 } 1072 1073 /* called only by client */ 1074 static int 1075 memif_init_queues(struct rte_eth_dev *dev) 1076 { 1077 struct pmd_internals *pmd = dev->data->dev_private; 1078 struct memif_queue *mq; 1079 int i; 1080 1081 for (i = 0; i < pmd->run.num_c2s_rings; i++) { 1082 mq = dev->data->tx_queues[i]; 1083 mq->log2_ring_size = pmd->run.log2_ring_size; 1084 /* queues located only in region 0 */ 1085 mq->region = 0; 1086 mq->ring_offset = memif_get_ring_offset(dev, mq, MEMIF_RING_C2S, i); 1087 mq->last_head = 0; 1088 mq->last_tail = 0; 1089 mq->intr_handle.fd = eventfd(0, EFD_NONBLOCK); 1090 if (mq->intr_handle.fd < 0) { 1091 MIF_LOG(WARNING, 1092 "Failed to create eventfd for tx queue %d: %s.", i, 1093 strerror(errno)); 1094 } 1095 mq->buffers = NULL; 1096 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 1097 mq->buffers = rte_zmalloc("bufs", sizeof(struct rte_mbuf *) * 1098 (1 << mq->log2_ring_size), 0); 1099 if (mq->buffers == NULL) 1100 return -ENOMEM; 1101 } 1102 } 1103 1104 for (i = 0; i < pmd->run.num_s2c_rings; i++) { 1105 mq = dev->data->rx_queues[i]; 1106 mq->log2_ring_size = pmd->run.log2_ring_size; 1107 /* queues located only in region 0 */ 1108 mq->region = 0; 1109 mq->ring_offset = memif_get_ring_offset(dev, mq, MEMIF_RING_S2C, i); 1110 mq->last_head = 0; 1111 mq->last_tail = 0; 1112 mq->intr_handle.fd = eventfd(0, EFD_NONBLOCK); 1113 if (mq->intr_handle.fd < 0) { 1114 MIF_LOG(WARNING, 1115 "Failed to create eventfd for rx queue %d: %s.", i, 1116 strerror(errno)); 1117 } 1118 mq->buffers = NULL; 1119 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 1120 mq->buffers = rte_zmalloc("bufs", sizeof(struct rte_mbuf *) * 1121 (1 << mq->log2_ring_size), 0); 1122 if (mq->buffers == NULL) 1123 return -ENOMEM; 1124 } 1125 } 1126 return 0; 1127 } 1128 1129 int 1130 memif_init_regions_and_queues(struct rte_eth_dev *dev) 1131 { 1132 int ret; 1133 1134 ret = memif_regions_init(dev); 1135 if (ret < 0) 1136 return ret; 1137 1138 memif_init_rings(dev); 1139 1140 ret = memif_init_queues(dev); 1141 if (ret < 0) 1142 return ret; 1143 1144 return 0; 1145 } 1146 1147 int 1148 memif_connect(struct rte_eth_dev *dev) 1149 { 1150 struct pmd_internals *pmd = dev->data->dev_private; 1151 struct pmd_process_private *proc_private = dev->process_private; 1152 struct memif_region *mr; 1153 struct memif_queue *mq; 1154 memif_ring_t *ring; 1155 int i; 1156 1157 for (i = 0; i < proc_private->regions_num; i++) { 1158 mr = proc_private->regions[i]; 1159 if (mr != NULL) { 1160 if (mr->addr == NULL) { 1161 if (mr->fd < 0) 1162 return -1; 1163 mr->addr = mmap(NULL, mr->region_size, 1164 PROT_READ | PROT_WRITE, 1165 MAP_SHARED, mr->fd, 0); 1166 if (mr->addr == MAP_FAILED) { 1167 MIF_LOG(ERR, "mmap failed: %s\n", 1168 strerror(errno)); 1169 return -1; 1170 } 1171 } 1172 if (i > 0 && (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY)) { 1173 /* close memseg file */ 1174 close(mr->fd); 1175 mr->fd = -1; 1176 } 1177 } 1178 } 1179 1180 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 1181 for (i = 0; i < pmd->run.num_c2s_rings; i++) { 1182 mq = (pmd->role == MEMIF_ROLE_CLIENT) ? 1183 dev->data->tx_queues[i] : dev->data->rx_queues[i]; 1184 ring = memif_get_ring_from_queue(proc_private, mq); 1185 if (ring == NULL || ring->cookie != MEMIF_COOKIE) { 1186 MIF_LOG(ERR, "Wrong ring"); 1187 return -1; 1188 } 1189 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED); 1190 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED); 1191 mq->last_head = 0; 1192 mq->last_tail = 0; 1193 /* enable polling mode */ 1194 if (pmd->role == MEMIF_ROLE_SERVER) 1195 ring->flags = MEMIF_RING_FLAG_MASK_INT; 1196 } 1197 for (i = 0; i < pmd->run.num_s2c_rings; i++) { 1198 mq = (pmd->role == MEMIF_ROLE_CLIENT) ? 1199 dev->data->rx_queues[i] : dev->data->tx_queues[i]; 1200 ring = memif_get_ring_from_queue(proc_private, mq); 1201 if (ring == NULL || ring->cookie != MEMIF_COOKIE) { 1202 MIF_LOG(ERR, "Wrong ring"); 1203 return -1; 1204 } 1205 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED); 1206 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED); 1207 mq->last_head = 0; 1208 mq->last_tail = 0; 1209 /* enable polling mode */ 1210 if (pmd->role == MEMIF_ROLE_CLIENT) 1211 ring->flags = MEMIF_RING_FLAG_MASK_INT; 1212 } 1213 1214 pmd->flags &= ~ETH_MEMIF_FLAG_CONNECTING; 1215 pmd->flags |= ETH_MEMIF_FLAG_CONNECTED; 1216 dev->data->dev_link.link_status = ETH_LINK_UP; 1217 } 1218 MIF_LOG(INFO, "Connected."); 1219 return 0; 1220 } 1221 1222 static int 1223 memif_dev_start(struct rte_eth_dev *dev) 1224 { 1225 struct pmd_internals *pmd = dev->data->dev_private; 1226 int ret = 0; 1227 1228 switch (pmd->role) { 1229 case MEMIF_ROLE_CLIENT: 1230 ret = memif_connect_client(dev); 1231 break; 1232 case MEMIF_ROLE_SERVER: 1233 ret = memif_connect_server(dev); 1234 break; 1235 default: 1236 MIF_LOG(ERR, "Unknown role: %d.", pmd->role); 1237 ret = -1; 1238 break; 1239 } 1240 1241 return ret; 1242 } 1243 1244 static int 1245 memif_dev_close(struct rte_eth_dev *dev) 1246 { 1247 struct pmd_internals *pmd = dev->data->dev_private; 1248 int i; 1249 1250 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 1251 memif_msg_enq_disconnect(pmd->cc, "Device closed", 0); 1252 memif_disconnect(dev); 1253 1254 for (i = 0; i < dev->data->nb_rx_queues; i++) 1255 (*dev->dev_ops->rx_queue_release)(dev->data->rx_queues[i]); 1256 for (i = 0; i < dev->data->nb_tx_queues; i++) 1257 (*dev->dev_ops->tx_queue_release)(dev->data->tx_queues[i]); 1258 1259 memif_socket_remove_device(dev); 1260 } else { 1261 memif_disconnect(dev); 1262 } 1263 1264 rte_free(dev->process_private); 1265 1266 return 0; 1267 } 1268 1269 static int 1270 memif_dev_configure(struct rte_eth_dev *dev) 1271 { 1272 struct pmd_internals *pmd = dev->data->dev_private; 1273 1274 /* 1275 * CLIENT - TXQ 1276 * SERVER - RXQ 1277 */ 1278 pmd->cfg.num_c2s_rings = (pmd->role == MEMIF_ROLE_CLIENT) ? 1279 dev->data->nb_tx_queues : dev->data->nb_rx_queues; 1280 1281 /* 1282 * CLIENT - RXQ 1283 * SERVER - TXQ 1284 */ 1285 pmd->cfg.num_s2c_rings = (pmd->role == MEMIF_ROLE_CLIENT) ? 1286 dev->data->nb_rx_queues : dev->data->nb_tx_queues; 1287 1288 return 0; 1289 } 1290 1291 static int 1292 memif_tx_queue_setup(struct rte_eth_dev *dev, 1293 uint16_t qid, 1294 uint16_t nb_tx_desc __rte_unused, 1295 unsigned int socket_id __rte_unused, 1296 const struct rte_eth_txconf *tx_conf __rte_unused) 1297 { 1298 struct pmd_internals *pmd = dev->data->dev_private; 1299 struct memif_queue *mq; 1300 1301 mq = rte_zmalloc("tx-queue", sizeof(struct memif_queue), 0); 1302 if (mq == NULL) { 1303 MIF_LOG(ERR, "Failed to allocate tx queue id: %u", qid); 1304 return -ENOMEM; 1305 } 1306 1307 mq->type = 1308 (pmd->role == MEMIF_ROLE_CLIENT) ? MEMIF_RING_C2S : MEMIF_RING_S2C; 1309 mq->n_pkts = 0; 1310 mq->n_bytes = 0; 1311 mq->intr_handle.fd = -1; 1312 mq->intr_handle.type = RTE_INTR_HANDLE_EXT; 1313 mq->in_port = dev->data->port_id; 1314 dev->data->tx_queues[qid] = mq; 1315 1316 return 0; 1317 } 1318 1319 static int 1320 memif_rx_queue_setup(struct rte_eth_dev *dev, 1321 uint16_t qid, 1322 uint16_t nb_rx_desc __rte_unused, 1323 unsigned int socket_id __rte_unused, 1324 const struct rte_eth_rxconf *rx_conf __rte_unused, 1325 struct rte_mempool *mb_pool) 1326 { 1327 struct pmd_internals *pmd = dev->data->dev_private; 1328 struct memif_queue *mq; 1329 1330 mq = rte_zmalloc("rx-queue", sizeof(struct memif_queue), 0); 1331 if (mq == NULL) { 1332 MIF_LOG(ERR, "Failed to allocate rx queue id: %u", qid); 1333 return -ENOMEM; 1334 } 1335 1336 mq->type = (pmd->role == MEMIF_ROLE_CLIENT) ? MEMIF_RING_S2C : MEMIF_RING_C2S; 1337 mq->n_pkts = 0; 1338 mq->n_bytes = 0; 1339 mq->intr_handle.fd = -1; 1340 mq->intr_handle.type = RTE_INTR_HANDLE_EXT; 1341 mq->mempool = mb_pool; 1342 mq->in_port = dev->data->port_id; 1343 dev->data->rx_queues[qid] = mq; 1344 1345 return 0; 1346 } 1347 1348 static void 1349 memif_queue_release(void *queue) 1350 { 1351 struct memif_queue *mq = (struct memif_queue *)queue; 1352 1353 if (!mq) 1354 return; 1355 1356 rte_free(mq); 1357 } 1358 1359 static int 1360 memif_link_update(struct rte_eth_dev *dev, 1361 int wait_to_complete __rte_unused) 1362 { 1363 struct pmd_process_private *proc_private; 1364 1365 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1366 proc_private = dev->process_private; 1367 if (dev->data->dev_link.link_status == ETH_LINK_UP && 1368 proc_private->regions_num == 0) { 1369 memif_mp_request_regions(dev); 1370 } else if (dev->data->dev_link.link_status == ETH_LINK_DOWN && 1371 proc_private->regions_num > 0) { 1372 memif_free_regions(dev); 1373 } 1374 } 1375 return 0; 1376 } 1377 1378 static int 1379 memif_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1380 { 1381 struct pmd_internals *pmd = dev->data->dev_private; 1382 struct memif_queue *mq; 1383 int i; 1384 uint8_t tmp, nq; 1385 1386 stats->ipackets = 0; 1387 stats->ibytes = 0; 1388 stats->opackets = 0; 1389 stats->obytes = 0; 1390 1391 tmp = (pmd->role == MEMIF_ROLE_CLIENT) ? pmd->run.num_c2s_rings : 1392 pmd->run.num_s2c_rings; 1393 nq = (tmp < RTE_ETHDEV_QUEUE_STAT_CNTRS) ? tmp : 1394 RTE_ETHDEV_QUEUE_STAT_CNTRS; 1395 1396 /* RX stats */ 1397 for (i = 0; i < nq; i++) { 1398 mq = dev->data->rx_queues[i]; 1399 stats->q_ipackets[i] = mq->n_pkts; 1400 stats->q_ibytes[i] = mq->n_bytes; 1401 stats->ipackets += mq->n_pkts; 1402 stats->ibytes += mq->n_bytes; 1403 } 1404 1405 tmp = (pmd->role == MEMIF_ROLE_CLIENT) ? pmd->run.num_s2c_rings : 1406 pmd->run.num_c2s_rings; 1407 nq = (tmp < RTE_ETHDEV_QUEUE_STAT_CNTRS) ? tmp : 1408 RTE_ETHDEV_QUEUE_STAT_CNTRS; 1409 1410 /* TX stats */ 1411 for (i = 0; i < nq; i++) { 1412 mq = dev->data->tx_queues[i]; 1413 stats->q_opackets[i] = mq->n_pkts; 1414 stats->q_obytes[i] = mq->n_bytes; 1415 stats->opackets += mq->n_pkts; 1416 stats->obytes += mq->n_bytes; 1417 } 1418 return 0; 1419 } 1420 1421 static int 1422 memif_stats_reset(struct rte_eth_dev *dev) 1423 { 1424 struct pmd_internals *pmd = dev->data->dev_private; 1425 int i; 1426 struct memif_queue *mq; 1427 1428 for (i = 0; i < pmd->run.num_c2s_rings; i++) { 1429 mq = (pmd->role == MEMIF_ROLE_CLIENT) ? dev->data->tx_queues[i] : 1430 dev->data->rx_queues[i]; 1431 mq->n_pkts = 0; 1432 mq->n_bytes = 0; 1433 } 1434 for (i = 0; i < pmd->run.num_s2c_rings; i++) { 1435 mq = (pmd->role == MEMIF_ROLE_CLIENT) ? dev->data->rx_queues[i] : 1436 dev->data->tx_queues[i]; 1437 mq->n_pkts = 0; 1438 mq->n_bytes = 0; 1439 } 1440 1441 return 0; 1442 } 1443 1444 static int 1445 memif_rx_queue_intr_enable(struct rte_eth_dev *dev __rte_unused, 1446 uint16_t qid __rte_unused) 1447 { 1448 MIF_LOG(WARNING, "Interrupt mode not supported."); 1449 1450 return -1; 1451 } 1452 1453 static int 1454 memif_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t qid __rte_unused) 1455 { 1456 struct pmd_internals *pmd __rte_unused = dev->data->dev_private; 1457 1458 return 0; 1459 } 1460 1461 static const struct eth_dev_ops ops = { 1462 .dev_start = memif_dev_start, 1463 .dev_close = memif_dev_close, 1464 .dev_infos_get = memif_dev_info, 1465 .dev_configure = memif_dev_configure, 1466 .tx_queue_setup = memif_tx_queue_setup, 1467 .rx_queue_setup = memif_rx_queue_setup, 1468 .rx_queue_release = memif_queue_release, 1469 .tx_queue_release = memif_queue_release, 1470 .rx_queue_intr_enable = memif_rx_queue_intr_enable, 1471 .rx_queue_intr_disable = memif_rx_queue_intr_disable, 1472 .link_update = memif_link_update, 1473 .stats_get = memif_stats_get, 1474 .stats_reset = memif_stats_reset, 1475 }; 1476 1477 static int 1478 memif_create(struct rte_vdev_device *vdev, enum memif_role_t role, 1479 memif_interface_id_t id, uint32_t flags, 1480 const char *socket_filename, 1481 memif_log2_ring_size_t log2_ring_size, 1482 uint16_t pkt_buffer_size, const char *secret, 1483 struct rte_ether_addr *ether_addr) 1484 { 1485 int ret = 0; 1486 struct rte_eth_dev *eth_dev; 1487 struct rte_eth_dev_data *data; 1488 struct pmd_internals *pmd; 1489 struct pmd_process_private *process_private; 1490 const unsigned int numa_node = vdev->device.numa_node; 1491 const char *name = rte_vdev_device_name(vdev); 1492 1493 eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*pmd)); 1494 if (eth_dev == NULL) { 1495 MIF_LOG(ERR, "%s: Unable to allocate device struct.", name); 1496 return -1; 1497 } 1498 1499 process_private = (struct pmd_process_private *) 1500 rte_zmalloc(name, sizeof(struct pmd_process_private), 1501 RTE_CACHE_LINE_SIZE); 1502 1503 if (process_private == NULL) { 1504 MIF_LOG(ERR, "Failed to alloc memory for process private"); 1505 return -1; 1506 } 1507 eth_dev->process_private = process_private; 1508 1509 pmd = eth_dev->data->dev_private; 1510 memset(pmd, 0, sizeof(*pmd)); 1511 1512 pmd->id = id; 1513 pmd->flags = flags; 1514 pmd->flags |= ETH_MEMIF_FLAG_DISABLED; 1515 pmd->role = role; 1516 /* Zero-copy flag irelevant to server. */ 1517 if (pmd->role == MEMIF_ROLE_SERVER) 1518 pmd->flags &= ~ETH_MEMIF_FLAG_ZERO_COPY; 1519 1520 ret = memif_socket_init(eth_dev, socket_filename); 1521 if (ret < 0) 1522 return ret; 1523 1524 memset(pmd->secret, 0, sizeof(char) * ETH_MEMIF_SECRET_SIZE); 1525 if (secret != NULL) 1526 strlcpy(pmd->secret, secret, sizeof(pmd->secret)); 1527 1528 pmd->cfg.log2_ring_size = log2_ring_size; 1529 /* set in .dev_configure() */ 1530 pmd->cfg.num_c2s_rings = 0; 1531 pmd->cfg.num_s2c_rings = 0; 1532 1533 pmd->cfg.pkt_buffer_size = pkt_buffer_size; 1534 rte_spinlock_init(&pmd->cc_lock); 1535 1536 data = eth_dev->data; 1537 data->dev_private = pmd; 1538 data->numa_node = numa_node; 1539 data->dev_link = pmd_link; 1540 data->mac_addrs = ether_addr; 1541 data->promiscuous = 1; 1542 data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 1543 1544 eth_dev->dev_ops = &ops; 1545 eth_dev->device = &vdev->device; 1546 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 1547 eth_dev->rx_pkt_burst = eth_memif_rx_zc; 1548 eth_dev->tx_pkt_burst = eth_memif_tx_zc; 1549 } else { 1550 eth_dev->rx_pkt_burst = eth_memif_rx; 1551 eth_dev->tx_pkt_burst = eth_memif_tx; 1552 } 1553 1554 rte_eth_dev_probing_finish(eth_dev); 1555 1556 return 0; 1557 } 1558 1559 static int 1560 memif_set_role(const char *key __rte_unused, const char *value, 1561 void *extra_args) 1562 { 1563 enum memif_role_t *role = (enum memif_role_t *)extra_args; 1564 1565 if (strstr(value, "server") != NULL) { 1566 *role = MEMIF_ROLE_SERVER; 1567 } else if (strstr(value, "client") != NULL) { 1568 *role = MEMIF_ROLE_CLIENT; 1569 } else if (strstr(value, "master") != NULL) { 1570 MIF_LOG(NOTICE, "Role argument \"master\" is deprecated, use \"server\""); 1571 *role = MEMIF_ROLE_SERVER; 1572 } else if (strstr(value, "slave") != NULL) { 1573 MIF_LOG(NOTICE, "Role argument \"slave\" is deprecated, use \"client\""); 1574 *role = MEMIF_ROLE_CLIENT; 1575 } else { 1576 MIF_LOG(ERR, "Unknown role: %s.", value); 1577 return -EINVAL; 1578 } 1579 return 0; 1580 } 1581 1582 static int 1583 memif_set_zc(const char *key __rte_unused, const char *value, void *extra_args) 1584 { 1585 uint32_t *flags = (uint32_t *)extra_args; 1586 1587 if (strstr(value, "yes") != NULL) { 1588 if (!rte_mcfg_get_single_file_segments()) { 1589 MIF_LOG(ERR, "Zero-copy doesn't support multi-file segments."); 1590 return -ENOTSUP; 1591 } 1592 *flags |= ETH_MEMIF_FLAG_ZERO_COPY; 1593 } else if (strstr(value, "no") != NULL) { 1594 *flags &= ~ETH_MEMIF_FLAG_ZERO_COPY; 1595 } else { 1596 MIF_LOG(ERR, "Failed to parse zero-copy param: %s.", value); 1597 return -EINVAL; 1598 } 1599 return 0; 1600 } 1601 1602 static int 1603 memif_set_id(const char *key __rte_unused, const char *value, void *extra_args) 1604 { 1605 memif_interface_id_t *id = (memif_interface_id_t *)extra_args; 1606 1607 /* even if parsing fails, 0 is a valid id */ 1608 *id = strtoul(value, NULL, 10); 1609 return 0; 1610 } 1611 1612 static int 1613 memif_set_bs(const char *key __rte_unused, const char *value, void *extra_args) 1614 { 1615 unsigned long tmp; 1616 uint16_t *pkt_buffer_size = (uint16_t *)extra_args; 1617 1618 tmp = strtoul(value, NULL, 10); 1619 if (tmp == 0 || tmp > 0xFFFF) { 1620 MIF_LOG(ERR, "Invalid buffer size: %s.", value); 1621 return -EINVAL; 1622 } 1623 *pkt_buffer_size = tmp; 1624 return 0; 1625 } 1626 1627 static int 1628 memif_set_rs(const char *key __rte_unused, const char *value, void *extra_args) 1629 { 1630 unsigned long tmp; 1631 memif_log2_ring_size_t *log2_ring_size = 1632 (memif_log2_ring_size_t *)extra_args; 1633 1634 tmp = strtoul(value, NULL, 10); 1635 if (tmp == 0 || tmp > ETH_MEMIF_MAX_LOG2_RING_SIZE) { 1636 MIF_LOG(ERR, "Invalid ring size: %s (max %u).", 1637 value, ETH_MEMIF_MAX_LOG2_RING_SIZE); 1638 return -EINVAL; 1639 } 1640 *log2_ring_size = tmp; 1641 return 0; 1642 } 1643 1644 /* check if directory exists and if we have permission to read/write */ 1645 static int 1646 memif_check_socket_filename(const char *filename) 1647 { 1648 char *dir = NULL, *tmp; 1649 uint32_t idx; 1650 int ret = 0; 1651 1652 if (strlen(filename) >= MEMIF_SOCKET_UN_SIZE) { 1653 MIF_LOG(ERR, "Unix socket address too long (max 108)."); 1654 return -1; 1655 } 1656 1657 tmp = strrchr(filename, '/'); 1658 if (tmp != NULL) { 1659 idx = tmp - filename; 1660 dir = rte_zmalloc("memif_tmp", sizeof(char) * (idx + 1), 0); 1661 if (dir == NULL) { 1662 MIF_LOG(ERR, "Failed to allocate memory."); 1663 return -1; 1664 } 1665 strlcpy(dir, filename, sizeof(char) * (idx + 1)); 1666 } 1667 1668 if (dir == NULL || (faccessat(-1, dir, F_OK | R_OK | 1669 W_OK, AT_EACCESS) < 0)) { 1670 MIF_LOG(ERR, "Invalid socket directory."); 1671 ret = -EINVAL; 1672 } 1673 1674 if (dir != NULL) 1675 rte_free(dir); 1676 1677 return ret; 1678 } 1679 1680 static int 1681 memif_set_socket_filename(const char *key __rte_unused, const char *value, 1682 void *extra_args) 1683 { 1684 const char **socket_filename = (const char **)extra_args; 1685 1686 *socket_filename = value; 1687 return 0; 1688 } 1689 1690 static int 1691 memif_set_is_socket_abstract(const char *key __rte_unused, const char *value, void *extra_args) 1692 { 1693 uint32_t *flags = (uint32_t *)extra_args; 1694 1695 if (strstr(value, "yes") != NULL) { 1696 *flags |= ETH_MEMIF_FLAG_SOCKET_ABSTRACT; 1697 } else if (strstr(value, "no") != NULL) { 1698 *flags &= ~ETH_MEMIF_FLAG_SOCKET_ABSTRACT; 1699 } else { 1700 MIF_LOG(ERR, "Failed to parse socket-abstract param: %s.", value); 1701 return -EINVAL; 1702 } 1703 return 0; 1704 } 1705 1706 static int 1707 memif_set_mac(const char *key __rte_unused, const char *value, void *extra_args) 1708 { 1709 struct rte_ether_addr *ether_addr = (struct rte_ether_addr *)extra_args; 1710 1711 if (rte_ether_unformat_addr(value, ether_addr) < 0) 1712 MIF_LOG(WARNING, "Failed to parse mac '%s'.", value); 1713 return 0; 1714 } 1715 1716 static int 1717 memif_set_secret(const char *key __rte_unused, const char *value, void *extra_args) 1718 { 1719 const char **secret = (const char **)extra_args; 1720 1721 *secret = value; 1722 return 0; 1723 } 1724 1725 static int 1726 rte_pmd_memif_probe(struct rte_vdev_device *vdev) 1727 { 1728 RTE_BUILD_BUG_ON(sizeof(memif_msg_t) != 128); 1729 RTE_BUILD_BUG_ON(sizeof(memif_desc_t) != 16); 1730 int ret = 0; 1731 struct rte_kvargs *kvlist; 1732 const char *name = rte_vdev_device_name(vdev); 1733 enum memif_role_t role = MEMIF_ROLE_CLIENT; 1734 memif_interface_id_t id = 0; 1735 uint16_t pkt_buffer_size = ETH_MEMIF_DEFAULT_PKT_BUFFER_SIZE; 1736 memif_log2_ring_size_t log2_ring_size = ETH_MEMIF_DEFAULT_RING_SIZE; 1737 const char *socket_filename = ETH_MEMIF_DEFAULT_SOCKET_FILENAME; 1738 uint32_t flags = 0; 1739 const char *secret = NULL; 1740 struct rte_ether_addr *ether_addr = rte_zmalloc("", 1741 sizeof(struct rte_ether_addr), 0); 1742 struct rte_eth_dev *eth_dev; 1743 1744 rte_eth_random_addr(ether_addr->addr_bytes); 1745 1746 MIF_LOG(INFO, "Initialize MEMIF: %s.", name); 1747 1748 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1749 eth_dev = rte_eth_dev_attach_secondary(name); 1750 if (!eth_dev) { 1751 MIF_LOG(ERR, "Failed to probe %s", name); 1752 return -1; 1753 } 1754 1755 eth_dev->dev_ops = &ops; 1756 eth_dev->device = &vdev->device; 1757 eth_dev->rx_pkt_burst = eth_memif_rx; 1758 eth_dev->tx_pkt_burst = eth_memif_tx; 1759 1760 if (!rte_eal_primary_proc_alive(NULL)) { 1761 MIF_LOG(ERR, "Primary process is missing"); 1762 return -1; 1763 } 1764 1765 eth_dev->process_private = (struct pmd_process_private *) 1766 rte_zmalloc(name, 1767 sizeof(struct pmd_process_private), 1768 RTE_CACHE_LINE_SIZE); 1769 if (eth_dev->process_private == NULL) { 1770 MIF_LOG(ERR, 1771 "Failed to alloc memory for process private"); 1772 return -1; 1773 } 1774 1775 rte_eth_dev_probing_finish(eth_dev); 1776 1777 return 0; 1778 } 1779 1780 ret = rte_mp_action_register(MEMIF_MP_SEND_REGION, memif_mp_send_region); 1781 /* 1782 * Primary process can continue probing, but secondary process won't 1783 * be able to get memory regions information 1784 */ 1785 if (ret < 0 && rte_errno != EEXIST) 1786 MIF_LOG(WARNING, "Failed to register mp action callback: %s", 1787 strerror(rte_errno)); 1788 1789 /* use abstract address by default */ 1790 flags |= ETH_MEMIF_FLAG_SOCKET_ABSTRACT; 1791 1792 kvlist = rte_kvargs_parse(rte_vdev_device_args(vdev), valid_arguments); 1793 1794 /* parse parameters */ 1795 if (kvlist != NULL) { 1796 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ROLE_ARG, 1797 &memif_set_role, &role); 1798 if (ret < 0) 1799 goto exit; 1800 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ID_ARG, 1801 &memif_set_id, &id); 1802 if (ret < 0) 1803 goto exit; 1804 ret = rte_kvargs_process(kvlist, ETH_MEMIF_PKT_BUFFER_SIZE_ARG, 1805 &memif_set_bs, &pkt_buffer_size); 1806 if (ret < 0) 1807 goto exit; 1808 ret = rte_kvargs_process(kvlist, ETH_MEMIF_RING_SIZE_ARG, 1809 &memif_set_rs, &log2_ring_size); 1810 if (ret < 0) 1811 goto exit; 1812 ret = rte_kvargs_process(kvlist, ETH_MEMIF_SOCKET_ARG, 1813 &memif_set_socket_filename, 1814 (void *)(&socket_filename)); 1815 if (ret < 0) 1816 goto exit; 1817 ret = rte_kvargs_process(kvlist, ETH_MEMIF_SOCKET_ABSTRACT_ARG, 1818 &memif_set_is_socket_abstract, &flags); 1819 if (ret < 0) 1820 goto exit; 1821 ret = rte_kvargs_process(kvlist, ETH_MEMIF_MAC_ARG, 1822 &memif_set_mac, ether_addr); 1823 if (ret < 0) 1824 goto exit; 1825 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ZC_ARG, 1826 &memif_set_zc, &flags); 1827 if (ret < 0) 1828 goto exit; 1829 ret = rte_kvargs_process(kvlist, ETH_MEMIF_SECRET_ARG, 1830 &memif_set_secret, (void *)(&secret)); 1831 if (ret < 0) 1832 goto exit; 1833 } 1834 1835 if (!(flags & ETH_MEMIF_FLAG_SOCKET_ABSTRACT)) { 1836 ret = memif_check_socket_filename(socket_filename); 1837 if (ret < 0) 1838 goto exit; 1839 } 1840 1841 /* create interface */ 1842 ret = memif_create(vdev, role, id, flags, socket_filename, 1843 log2_ring_size, pkt_buffer_size, secret, ether_addr); 1844 1845 exit: 1846 if (kvlist != NULL) 1847 rte_kvargs_free(kvlist); 1848 return ret; 1849 } 1850 1851 static int 1852 rte_pmd_memif_remove(struct rte_vdev_device *vdev) 1853 { 1854 struct rte_eth_dev *eth_dev; 1855 1856 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(vdev)); 1857 if (eth_dev == NULL) 1858 return 0; 1859 1860 return rte_eth_dev_close(eth_dev->data->port_id); 1861 } 1862 1863 static struct rte_vdev_driver pmd_memif_drv = { 1864 .probe = rte_pmd_memif_probe, 1865 .remove = rte_pmd_memif_remove, 1866 }; 1867 1868 RTE_PMD_REGISTER_VDEV(net_memif, pmd_memif_drv); 1869 1870 RTE_PMD_REGISTER_PARAM_STRING(net_memif, 1871 ETH_MEMIF_ID_ARG "=<int>" 1872 ETH_MEMIF_ROLE_ARG "=server|client" 1873 ETH_MEMIF_PKT_BUFFER_SIZE_ARG "=<int>" 1874 ETH_MEMIF_RING_SIZE_ARG "=<int>" 1875 ETH_MEMIF_SOCKET_ARG "=<string>" 1876 ETH_MEMIF_SOCKET_ABSTRACT_ARG "=yes|no" 1877 ETH_MEMIF_MAC_ARG "=xx:xx:xx:xx:xx:xx" 1878 ETH_MEMIF_ZC_ARG "=yes|no" 1879 ETH_MEMIF_SECRET_ARG "=<string>"); 1880 1881 RTE_LOG_REGISTER(memif_logtype, pmd.net.memif, NOTICE); 1882