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 mq->n_bytes += rte_pktmbuf_data_len(mbuf); 710 /* FIXME: get region index */ 711 d0->region = 1; 712 d0->offset = rte_pktmbuf_mtod(mbuf, uint8_t *) - 713 (uint8_t *)proc_private->regions[d0->region]->addr; 714 d0->flags = 0; 715 716 /* check if buffer is chained */ 717 if (rte_pktmbuf_is_contiguous(mbuf) == 0) { 718 if (n_free < 2) 719 return 0; 720 /* mark buffer as chained */ 721 d0->flags |= MEMIF_DESC_FLAG_NEXT; 722 /* advance mbuf */ 723 mbuf = mbuf->next; 724 /* update counters */ 725 used_slots++; 726 slot++; 727 n_free--; 728 goto next_in_chain; 729 } 730 return used_slots; 731 } 732 733 static uint16_t 734 eth_memif_tx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) 735 { 736 struct memif_queue *mq = queue; 737 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private; 738 struct pmd_process_private *proc_private = 739 rte_eth_devices[mq->in_port].process_private; 740 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq); 741 uint16_t slot, n_free, ring_size, mask, n_tx_pkts = 0; 742 struct rte_eth_link link; 743 744 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0)) 745 return 0; 746 if (unlikely(ring == NULL)) { 747 /* Secondary process will attempt to request regions. */ 748 rte_eth_link_get(mq->in_port, &link); 749 return 0; 750 } 751 752 ring_size = 1 << mq->log2_ring_size; 753 mask = ring_size - 1; 754 755 /* free mbufs received by server */ 756 memif_free_stored_mbufs(proc_private, mq); 757 758 /* ring type always MEMIF_RING_C2S */ 759 /* For C2S queues ring->head is updated by the sender and 760 * this function is called in the context of sending thread. 761 * The loads in the sender do not need to synchronize with 762 * its own stores. Hence, the following load can be a 763 * relaxed load. 764 */ 765 slot = __atomic_load_n(&ring->head, __ATOMIC_RELAXED); 766 n_free = ring_size - slot + mq->last_tail; 767 768 int used_slots; 769 770 while (n_free && (n_tx_pkts < nb_pkts)) { 771 while ((n_free > 4) && ((nb_pkts - n_tx_pkts) > 4)) { 772 if ((nb_pkts - n_tx_pkts) > 8) { 773 rte_prefetch0(*bufs + 4); 774 rte_prefetch0(*bufs + 5); 775 rte_prefetch0(*bufs + 6); 776 rte_prefetch0(*bufs + 7); 777 } 778 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 779 mask, slot, n_free); 780 if (unlikely(used_slots < 1)) 781 goto no_free_slots; 782 n_tx_pkts++; 783 slot += used_slots; 784 n_free -= used_slots; 785 786 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 787 mask, slot, n_free); 788 if (unlikely(used_slots < 1)) 789 goto no_free_slots; 790 n_tx_pkts++; 791 slot += used_slots; 792 n_free -= used_slots; 793 794 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 795 mask, slot, n_free); 796 if (unlikely(used_slots < 1)) 797 goto no_free_slots; 798 n_tx_pkts++; 799 slot += used_slots; 800 n_free -= used_slots; 801 802 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 803 mask, slot, n_free); 804 if (unlikely(used_slots < 1)) 805 goto no_free_slots; 806 n_tx_pkts++; 807 slot += used_slots; 808 n_free -= used_slots; 809 } 810 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++, 811 mask, slot, n_free); 812 if (unlikely(used_slots < 1)) 813 goto no_free_slots; 814 n_tx_pkts++; 815 slot += used_slots; 816 n_free -= used_slots; 817 } 818 819 no_free_slots: 820 /* ring type always MEMIF_RING_C2S */ 821 /* The ring->head acts as a guard variable between Tx and Rx 822 * threads, so using store-release pairs with load-acquire 823 * in function eth_memif_rx for C2S rings. 824 */ 825 __atomic_store_n(&ring->head, slot, __ATOMIC_RELEASE); 826 827 /* Send interrupt, if enabled. */ 828 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) { 829 uint64_t a = 1; 830 ssize_t size = write(mq->intr_handle.fd, &a, sizeof(a)); 831 if (unlikely(size < 0)) { 832 MIF_LOG(WARNING, 833 "Failed to send interrupt. %s", strerror(errno)); 834 } 835 } 836 837 /* increment queue counters */ 838 mq->n_pkts += n_tx_pkts; 839 840 return n_tx_pkts; 841 } 842 843 void 844 memif_free_regions(struct rte_eth_dev *dev) 845 { 846 struct pmd_process_private *proc_private = dev->process_private; 847 struct pmd_internals *pmd = dev->data->dev_private; 848 int i; 849 struct memif_region *r; 850 851 /* regions are allocated contiguously, so it's 852 * enough to loop until 'proc_private->regions_num' 853 */ 854 for (i = 0; i < proc_private->regions_num; i++) { 855 r = proc_private->regions[i]; 856 if (r != NULL) { 857 /* This is memzone */ 858 if (i > 0 && (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY)) { 859 r->addr = NULL; 860 if (r->fd > 0) 861 close(r->fd); 862 } 863 if (r->addr != NULL) { 864 munmap(r->addr, r->region_size); 865 if (r->fd > 0) { 866 close(r->fd); 867 r->fd = -1; 868 } 869 } 870 rte_free(r); 871 proc_private->regions[i] = NULL; 872 } 873 } 874 proc_private->regions_num = 0; 875 } 876 877 static int 878 memif_region_init_zc(const struct rte_memseg_list *msl, const struct rte_memseg *ms, 879 void *arg) 880 { 881 struct pmd_process_private *proc_private = (struct pmd_process_private *)arg; 882 struct memif_region *r; 883 884 if (proc_private->regions_num < 1) { 885 MIF_LOG(ERR, "Missing descriptor region"); 886 return -1; 887 } 888 889 r = proc_private->regions[proc_private->regions_num - 1]; 890 891 if (r->addr != msl->base_va) 892 r = proc_private->regions[++proc_private->regions_num - 1]; 893 894 if (r == NULL) { 895 r = rte_zmalloc("region", sizeof(struct memif_region), 0); 896 if (r == NULL) { 897 MIF_LOG(ERR, "Failed to alloc memif region."); 898 return -ENOMEM; 899 } 900 901 r->addr = msl->base_va; 902 r->region_size = ms->len; 903 r->fd = rte_memseg_get_fd(ms); 904 if (r->fd < 0) 905 return -1; 906 r->pkt_buffer_offset = 0; 907 908 proc_private->regions[proc_private->regions_num - 1] = r; 909 } else { 910 r->region_size += ms->len; 911 } 912 913 return 0; 914 } 915 916 static int 917 memif_region_init_shm(struct rte_eth_dev *dev, uint8_t has_buffers) 918 { 919 struct pmd_internals *pmd = dev->data->dev_private; 920 struct pmd_process_private *proc_private = dev->process_private; 921 char shm_name[ETH_MEMIF_SHM_NAME_SIZE]; 922 int ret = 0; 923 struct memif_region *r; 924 925 if (proc_private->regions_num >= ETH_MEMIF_MAX_REGION_NUM) { 926 MIF_LOG(ERR, "Too many regions."); 927 return -1; 928 } 929 930 r = rte_zmalloc("region", sizeof(struct memif_region), 0); 931 if (r == NULL) { 932 MIF_LOG(ERR, "Failed to alloc memif region."); 933 return -ENOMEM; 934 } 935 936 /* calculate buffer offset */ 937 r->pkt_buffer_offset = (pmd->run.num_c2s_rings + pmd->run.num_s2c_rings) * 938 (sizeof(memif_ring_t) + sizeof(memif_desc_t) * 939 (1 << pmd->run.log2_ring_size)); 940 941 r->region_size = r->pkt_buffer_offset; 942 /* if region has buffers, add buffers size to region_size */ 943 if (has_buffers == 1) 944 r->region_size += (uint32_t)(pmd->run.pkt_buffer_size * 945 (1 << pmd->run.log2_ring_size) * 946 (pmd->run.num_c2s_rings + 947 pmd->run.num_s2c_rings)); 948 949 memset(shm_name, 0, sizeof(char) * ETH_MEMIF_SHM_NAME_SIZE); 950 snprintf(shm_name, ETH_MEMIF_SHM_NAME_SIZE, "memif_region_%d", 951 proc_private->regions_num); 952 953 r->fd = memfd_create(shm_name, MFD_ALLOW_SEALING); 954 if (r->fd < 0) { 955 MIF_LOG(ERR, "Failed to create shm file: %s.", strerror(errno)); 956 ret = -1; 957 goto error; 958 } 959 960 ret = fcntl(r->fd, F_ADD_SEALS, F_SEAL_SHRINK); 961 if (ret < 0) { 962 MIF_LOG(ERR, "Failed to add seals to shm file: %s.", strerror(errno)); 963 goto error; 964 } 965 966 ret = ftruncate(r->fd, r->region_size); 967 if (ret < 0) { 968 MIF_LOG(ERR, "Failed to truncate shm file: %s.", strerror(errno)); 969 goto error; 970 } 971 972 r->addr = mmap(NULL, r->region_size, PROT_READ | 973 PROT_WRITE, MAP_SHARED, r->fd, 0); 974 if (r->addr == MAP_FAILED) { 975 MIF_LOG(ERR, "Failed to mmap shm region: %s.", strerror(ret)); 976 ret = -1; 977 goto error; 978 } 979 980 proc_private->regions[proc_private->regions_num] = r; 981 proc_private->regions_num++; 982 983 return ret; 984 985 error: 986 if (r->fd > 0) 987 close(r->fd); 988 r->fd = -1; 989 990 return ret; 991 } 992 993 static int 994 memif_regions_init(struct rte_eth_dev *dev) 995 { 996 struct pmd_internals *pmd = dev->data->dev_private; 997 int ret; 998 999 /* 1000 * Zero-copy exposes dpdk memory. 1001 * Each memseg list will be represented by memif region. 1002 * Zero-copy regions indexing: memseg list idx + 1, 1003 * as we already have region 0 reserved for descriptors. 1004 */ 1005 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 1006 /* create region idx 0 containing descriptors */ 1007 ret = memif_region_init_shm(dev, 0); 1008 if (ret < 0) 1009 return ret; 1010 ret = rte_memseg_walk(memif_region_init_zc, (void *)dev->process_private); 1011 if (ret < 0) 1012 return ret; 1013 } else { 1014 /* create one memory region contaning rings and buffers */ 1015 ret = memif_region_init_shm(dev, /* has buffers */ 1); 1016 if (ret < 0) 1017 return ret; 1018 } 1019 1020 return 0; 1021 } 1022 1023 static void 1024 memif_init_rings(struct rte_eth_dev *dev) 1025 { 1026 struct pmd_internals *pmd = dev->data->dev_private; 1027 struct pmd_process_private *proc_private = dev->process_private; 1028 memif_ring_t *ring; 1029 int i, j; 1030 uint16_t slot; 1031 1032 for (i = 0; i < pmd->run.num_c2s_rings; i++) { 1033 ring = memif_get_ring(pmd, proc_private, MEMIF_RING_C2S, i); 1034 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED); 1035 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED); 1036 ring->cookie = MEMIF_COOKIE; 1037 ring->flags = 0; 1038 1039 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) 1040 continue; 1041 1042 for (j = 0; j < (1 << pmd->run.log2_ring_size); j++) { 1043 slot = i * (1 << pmd->run.log2_ring_size) + j; 1044 ring->desc[j].region = 0; 1045 ring->desc[j].offset = 1046 proc_private->regions[0]->pkt_buffer_offset + 1047 (uint32_t)(slot * pmd->run.pkt_buffer_size); 1048 ring->desc[j].length = pmd->run.pkt_buffer_size; 1049 } 1050 } 1051 1052 for (i = 0; i < pmd->run.num_s2c_rings; i++) { 1053 ring = memif_get_ring(pmd, proc_private, MEMIF_RING_S2C, i); 1054 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED); 1055 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED); 1056 ring->cookie = MEMIF_COOKIE; 1057 ring->flags = 0; 1058 1059 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) 1060 continue; 1061 1062 for (j = 0; j < (1 << pmd->run.log2_ring_size); j++) { 1063 slot = (i + pmd->run.num_c2s_rings) * 1064 (1 << pmd->run.log2_ring_size) + j; 1065 ring->desc[j].region = 0; 1066 ring->desc[j].offset = 1067 proc_private->regions[0]->pkt_buffer_offset + 1068 (uint32_t)(slot * pmd->run.pkt_buffer_size); 1069 ring->desc[j].length = pmd->run.pkt_buffer_size; 1070 } 1071 } 1072 } 1073 1074 /* called only by client */ 1075 static int 1076 memif_init_queues(struct rte_eth_dev *dev) 1077 { 1078 struct pmd_internals *pmd = dev->data->dev_private; 1079 struct memif_queue *mq; 1080 int i; 1081 1082 for (i = 0; i < pmd->run.num_c2s_rings; i++) { 1083 mq = dev->data->tx_queues[i]; 1084 mq->log2_ring_size = pmd->run.log2_ring_size; 1085 /* queues located only in region 0 */ 1086 mq->region = 0; 1087 mq->ring_offset = memif_get_ring_offset(dev, mq, MEMIF_RING_C2S, i); 1088 mq->last_head = 0; 1089 mq->last_tail = 0; 1090 mq->intr_handle.fd = eventfd(0, EFD_NONBLOCK); 1091 if (mq->intr_handle.fd < 0) { 1092 MIF_LOG(WARNING, 1093 "Failed to create eventfd for tx queue %d: %s.", i, 1094 strerror(errno)); 1095 } 1096 mq->buffers = NULL; 1097 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 1098 mq->buffers = rte_zmalloc("bufs", sizeof(struct rte_mbuf *) * 1099 (1 << mq->log2_ring_size), 0); 1100 if (mq->buffers == NULL) 1101 return -ENOMEM; 1102 } 1103 } 1104 1105 for (i = 0; i < pmd->run.num_s2c_rings; i++) { 1106 mq = dev->data->rx_queues[i]; 1107 mq->log2_ring_size = pmd->run.log2_ring_size; 1108 /* queues located only in region 0 */ 1109 mq->region = 0; 1110 mq->ring_offset = memif_get_ring_offset(dev, mq, MEMIF_RING_S2C, i); 1111 mq->last_head = 0; 1112 mq->last_tail = 0; 1113 mq->intr_handle.fd = eventfd(0, EFD_NONBLOCK); 1114 if (mq->intr_handle.fd < 0) { 1115 MIF_LOG(WARNING, 1116 "Failed to create eventfd for rx queue %d: %s.", i, 1117 strerror(errno)); 1118 } 1119 mq->buffers = NULL; 1120 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 1121 mq->buffers = rte_zmalloc("bufs", sizeof(struct rte_mbuf *) * 1122 (1 << mq->log2_ring_size), 0); 1123 if (mq->buffers == NULL) 1124 return -ENOMEM; 1125 } 1126 } 1127 return 0; 1128 } 1129 1130 int 1131 memif_init_regions_and_queues(struct rte_eth_dev *dev) 1132 { 1133 int ret; 1134 1135 ret = memif_regions_init(dev); 1136 if (ret < 0) 1137 return ret; 1138 1139 memif_init_rings(dev); 1140 1141 ret = memif_init_queues(dev); 1142 if (ret < 0) 1143 return ret; 1144 1145 return 0; 1146 } 1147 1148 int 1149 memif_connect(struct rte_eth_dev *dev) 1150 { 1151 struct pmd_internals *pmd = dev->data->dev_private; 1152 struct pmd_process_private *proc_private = dev->process_private; 1153 struct memif_region *mr; 1154 struct memif_queue *mq; 1155 memif_ring_t *ring; 1156 int i; 1157 1158 for (i = 0; i < proc_private->regions_num; i++) { 1159 mr = proc_private->regions[i]; 1160 if (mr != NULL) { 1161 if (mr->addr == NULL) { 1162 if (mr->fd < 0) 1163 return -1; 1164 mr->addr = mmap(NULL, mr->region_size, 1165 PROT_READ | PROT_WRITE, 1166 MAP_SHARED, mr->fd, 0); 1167 if (mr->addr == MAP_FAILED) { 1168 MIF_LOG(ERR, "mmap failed: %s\n", 1169 strerror(errno)); 1170 return -1; 1171 } 1172 } 1173 if (i > 0 && (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY)) { 1174 /* close memseg file */ 1175 close(mr->fd); 1176 mr->fd = -1; 1177 } 1178 } 1179 } 1180 1181 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 1182 for (i = 0; i < pmd->run.num_c2s_rings; i++) { 1183 mq = (pmd->role == MEMIF_ROLE_CLIENT) ? 1184 dev->data->tx_queues[i] : dev->data->rx_queues[i]; 1185 ring = memif_get_ring_from_queue(proc_private, mq); 1186 if (ring == NULL || ring->cookie != MEMIF_COOKIE) { 1187 MIF_LOG(ERR, "Wrong ring"); 1188 return -1; 1189 } 1190 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED); 1191 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED); 1192 mq->last_head = 0; 1193 mq->last_tail = 0; 1194 /* enable polling mode */ 1195 if (pmd->role == MEMIF_ROLE_SERVER) 1196 ring->flags = MEMIF_RING_FLAG_MASK_INT; 1197 } 1198 for (i = 0; i < pmd->run.num_s2c_rings; i++) { 1199 mq = (pmd->role == MEMIF_ROLE_CLIENT) ? 1200 dev->data->rx_queues[i] : dev->data->tx_queues[i]; 1201 ring = memif_get_ring_from_queue(proc_private, mq); 1202 if (ring == NULL || ring->cookie != MEMIF_COOKIE) { 1203 MIF_LOG(ERR, "Wrong ring"); 1204 return -1; 1205 } 1206 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED); 1207 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED); 1208 mq->last_head = 0; 1209 mq->last_tail = 0; 1210 /* enable polling mode */ 1211 if (pmd->role == MEMIF_ROLE_CLIENT) 1212 ring->flags = MEMIF_RING_FLAG_MASK_INT; 1213 } 1214 1215 pmd->flags &= ~ETH_MEMIF_FLAG_CONNECTING; 1216 pmd->flags |= ETH_MEMIF_FLAG_CONNECTED; 1217 dev->data->dev_link.link_status = ETH_LINK_UP; 1218 } 1219 MIF_LOG(INFO, "Connected."); 1220 return 0; 1221 } 1222 1223 static int 1224 memif_dev_start(struct rte_eth_dev *dev) 1225 { 1226 struct pmd_internals *pmd = dev->data->dev_private; 1227 int ret = 0; 1228 1229 switch (pmd->role) { 1230 case MEMIF_ROLE_CLIENT: 1231 ret = memif_connect_client(dev); 1232 break; 1233 case MEMIF_ROLE_SERVER: 1234 ret = memif_connect_server(dev); 1235 break; 1236 default: 1237 MIF_LOG(ERR, "Unknown role: %d.", pmd->role); 1238 ret = -1; 1239 break; 1240 } 1241 1242 return ret; 1243 } 1244 1245 static int 1246 memif_dev_close(struct rte_eth_dev *dev) 1247 { 1248 struct pmd_internals *pmd = dev->data->dev_private; 1249 int i; 1250 1251 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 1252 memif_msg_enq_disconnect(pmd->cc, "Device closed", 0); 1253 memif_disconnect(dev); 1254 1255 for (i = 0; i < dev->data->nb_rx_queues; i++) 1256 (*dev->dev_ops->rx_queue_release)(dev->data->rx_queues[i]); 1257 for (i = 0; i < dev->data->nb_tx_queues; i++) 1258 (*dev->dev_ops->tx_queue_release)(dev->data->tx_queues[i]); 1259 1260 memif_socket_remove_device(dev); 1261 } else { 1262 memif_disconnect(dev); 1263 } 1264 1265 rte_free(dev->process_private); 1266 1267 return 0; 1268 } 1269 1270 static int 1271 memif_dev_configure(struct rte_eth_dev *dev) 1272 { 1273 struct pmd_internals *pmd = dev->data->dev_private; 1274 1275 /* 1276 * CLIENT - TXQ 1277 * SERVER - RXQ 1278 */ 1279 pmd->cfg.num_c2s_rings = (pmd->role == MEMIF_ROLE_CLIENT) ? 1280 dev->data->nb_tx_queues : dev->data->nb_rx_queues; 1281 1282 /* 1283 * CLIENT - RXQ 1284 * SERVER - TXQ 1285 */ 1286 pmd->cfg.num_s2c_rings = (pmd->role == MEMIF_ROLE_CLIENT) ? 1287 dev->data->nb_rx_queues : dev->data->nb_tx_queues; 1288 1289 return 0; 1290 } 1291 1292 static int 1293 memif_tx_queue_setup(struct rte_eth_dev *dev, 1294 uint16_t qid, 1295 uint16_t nb_tx_desc __rte_unused, 1296 unsigned int socket_id __rte_unused, 1297 const struct rte_eth_txconf *tx_conf __rte_unused) 1298 { 1299 struct pmd_internals *pmd = dev->data->dev_private; 1300 struct memif_queue *mq; 1301 1302 mq = rte_zmalloc("tx-queue", sizeof(struct memif_queue), 0); 1303 if (mq == NULL) { 1304 MIF_LOG(ERR, "Failed to allocate tx queue id: %u", qid); 1305 return -ENOMEM; 1306 } 1307 1308 mq->type = 1309 (pmd->role == MEMIF_ROLE_CLIENT) ? MEMIF_RING_C2S : MEMIF_RING_S2C; 1310 mq->n_pkts = 0; 1311 mq->n_bytes = 0; 1312 mq->intr_handle.fd = -1; 1313 mq->intr_handle.type = RTE_INTR_HANDLE_EXT; 1314 mq->in_port = dev->data->port_id; 1315 dev->data->tx_queues[qid] = mq; 1316 1317 return 0; 1318 } 1319 1320 static int 1321 memif_rx_queue_setup(struct rte_eth_dev *dev, 1322 uint16_t qid, 1323 uint16_t nb_rx_desc __rte_unused, 1324 unsigned int socket_id __rte_unused, 1325 const struct rte_eth_rxconf *rx_conf __rte_unused, 1326 struct rte_mempool *mb_pool) 1327 { 1328 struct pmd_internals *pmd = dev->data->dev_private; 1329 struct memif_queue *mq; 1330 1331 mq = rte_zmalloc("rx-queue", sizeof(struct memif_queue), 0); 1332 if (mq == NULL) { 1333 MIF_LOG(ERR, "Failed to allocate rx queue id: %u", qid); 1334 return -ENOMEM; 1335 } 1336 1337 mq->type = (pmd->role == MEMIF_ROLE_CLIENT) ? MEMIF_RING_S2C : MEMIF_RING_C2S; 1338 mq->n_pkts = 0; 1339 mq->n_bytes = 0; 1340 mq->intr_handle.fd = -1; 1341 mq->intr_handle.type = RTE_INTR_HANDLE_EXT; 1342 mq->mempool = mb_pool; 1343 mq->in_port = dev->data->port_id; 1344 dev->data->rx_queues[qid] = mq; 1345 1346 return 0; 1347 } 1348 1349 static void 1350 memif_queue_release(void *queue) 1351 { 1352 struct memif_queue *mq = (struct memif_queue *)queue; 1353 1354 if (!mq) 1355 return; 1356 1357 rte_free(mq); 1358 } 1359 1360 static int 1361 memif_link_update(struct rte_eth_dev *dev, 1362 int wait_to_complete __rte_unused) 1363 { 1364 struct pmd_process_private *proc_private; 1365 1366 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1367 proc_private = dev->process_private; 1368 if (dev->data->dev_link.link_status == ETH_LINK_UP && 1369 proc_private->regions_num == 0) { 1370 memif_mp_request_regions(dev); 1371 } else if (dev->data->dev_link.link_status == ETH_LINK_DOWN && 1372 proc_private->regions_num > 0) { 1373 memif_free_regions(dev); 1374 } 1375 } 1376 return 0; 1377 } 1378 1379 static int 1380 memif_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1381 { 1382 struct pmd_internals *pmd = dev->data->dev_private; 1383 struct memif_queue *mq; 1384 int i; 1385 uint8_t tmp, nq; 1386 1387 stats->ipackets = 0; 1388 stats->ibytes = 0; 1389 stats->opackets = 0; 1390 stats->obytes = 0; 1391 1392 tmp = (pmd->role == MEMIF_ROLE_CLIENT) ? pmd->run.num_c2s_rings : 1393 pmd->run.num_s2c_rings; 1394 nq = (tmp < RTE_ETHDEV_QUEUE_STAT_CNTRS) ? tmp : 1395 RTE_ETHDEV_QUEUE_STAT_CNTRS; 1396 1397 /* RX stats */ 1398 for (i = 0; i < nq; i++) { 1399 mq = dev->data->rx_queues[i]; 1400 stats->q_ipackets[i] = mq->n_pkts; 1401 stats->q_ibytes[i] = mq->n_bytes; 1402 stats->ipackets += mq->n_pkts; 1403 stats->ibytes += mq->n_bytes; 1404 } 1405 1406 tmp = (pmd->role == MEMIF_ROLE_CLIENT) ? pmd->run.num_s2c_rings : 1407 pmd->run.num_c2s_rings; 1408 nq = (tmp < RTE_ETHDEV_QUEUE_STAT_CNTRS) ? tmp : 1409 RTE_ETHDEV_QUEUE_STAT_CNTRS; 1410 1411 /* TX stats */ 1412 for (i = 0; i < nq; i++) { 1413 mq = dev->data->tx_queues[i]; 1414 stats->q_opackets[i] = mq->n_pkts; 1415 stats->q_obytes[i] = mq->n_bytes; 1416 stats->opackets += mq->n_pkts; 1417 stats->obytes += mq->n_bytes; 1418 } 1419 return 0; 1420 } 1421 1422 static int 1423 memif_stats_reset(struct rte_eth_dev *dev) 1424 { 1425 struct pmd_internals *pmd = dev->data->dev_private; 1426 int i; 1427 struct memif_queue *mq; 1428 1429 for (i = 0; i < pmd->run.num_c2s_rings; i++) { 1430 mq = (pmd->role == MEMIF_ROLE_CLIENT) ? dev->data->tx_queues[i] : 1431 dev->data->rx_queues[i]; 1432 mq->n_pkts = 0; 1433 mq->n_bytes = 0; 1434 } 1435 for (i = 0; i < pmd->run.num_s2c_rings; i++) { 1436 mq = (pmd->role == MEMIF_ROLE_CLIENT) ? dev->data->rx_queues[i] : 1437 dev->data->tx_queues[i]; 1438 mq->n_pkts = 0; 1439 mq->n_bytes = 0; 1440 } 1441 1442 return 0; 1443 } 1444 1445 static int 1446 memif_rx_queue_intr_enable(struct rte_eth_dev *dev __rte_unused, 1447 uint16_t qid __rte_unused) 1448 { 1449 MIF_LOG(WARNING, "Interrupt mode not supported."); 1450 1451 return -1; 1452 } 1453 1454 static int 1455 memif_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t qid __rte_unused) 1456 { 1457 struct pmd_internals *pmd __rte_unused = dev->data->dev_private; 1458 1459 return 0; 1460 } 1461 1462 static const struct eth_dev_ops ops = { 1463 .dev_start = memif_dev_start, 1464 .dev_close = memif_dev_close, 1465 .dev_infos_get = memif_dev_info, 1466 .dev_configure = memif_dev_configure, 1467 .tx_queue_setup = memif_tx_queue_setup, 1468 .rx_queue_setup = memif_rx_queue_setup, 1469 .rx_queue_release = memif_queue_release, 1470 .tx_queue_release = memif_queue_release, 1471 .rx_queue_intr_enable = memif_rx_queue_intr_enable, 1472 .rx_queue_intr_disable = memif_rx_queue_intr_disable, 1473 .link_update = memif_link_update, 1474 .stats_get = memif_stats_get, 1475 .stats_reset = memif_stats_reset, 1476 }; 1477 1478 static int 1479 memif_create(struct rte_vdev_device *vdev, enum memif_role_t role, 1480 memif_interface_id_t id, uint32_t flags, 1481 const char *socket_filename, 1482 memif_log2_ring_size_t log2_ring_size, 1483 uint16_t pkt_buffer_size, const char *secret, 1484 struct rte_ether_addr *ether_addr) 1485 { 1486 int ret = 0; 1487 struct rte_eth_dev *eth_dev; 1488 struct rte_eth_dev_data *data; 1489 struct pmd_internals *pmd; 1490 struct pmd_process_private *process_private; 1491 const unsigned int numa_node = vdev->device.numa_node; 1492 const char *name = rte_vdev_device_name(vdev); 1493 1494 eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*pmd)); 1495 if (eth_dev == NULL) { 1496 MIF_LOG(ERR, "%s: Unable to allocate device struct.", name); 1497 return -1; 1498 } 1499 1500 process_private = (struct pmd_process_private *) 1501 rte_zmalloc(name, sizeof(struct pmd_process_private), 1502 RTE_CACHE_LINE_SIZE); 1503 1504 if (process_private == NULL) { 1505 MIF_LOG(ERR, "Failed to alloc memory for process private"); 1506 return -1; 1507 } 1508 eth_dev->process_private = process_private; 1509 1510 pmd = eth_dev->data->dev_private; 1511 memset(pmd, 0, sizeof(*pmd)); 1512 1513 pmd->id = id; 1514 pmd->flags = flags; 1515 pmd->flags |= ETH_MEMIF_FLAG_DISABLED; 1516 pmd->role = role; 1517 /* Zero-copy flag irelevant to server. */ 1518 if (pmd->role == MEMIF_ROLE_SERVER) 1519 pmd->flags &= ~ETH_MEMIF_FLAG_ZERO_COPY; 1520 1521 ret = memif_socket_init(eth_dev, socket_filename); 1522 if (ret < 0) 1523 return ret; 1524 1525 memset(pmd->secret, 0, sizeof(char) * ETH_MEMIF_SECRET_SIZE); 1526 if (secret != NULL) 1527 strlcpy(pmd->secret, secret, sizeof(pmd->secret)); 1528 1529 pmd->cfg.log2_ring_size = log2_ring_size; 1530 /* set in .dev_configure() */ 1531 pmd->cfg.num_c2s_rings = 0; 1532 pmd->cfg.num_s2c_rings = 0; 1533 1534 pmd->cfg.pkt_buffer_size = pkt_buffer_size; 1535 rte_spinlock_init(&pmd->cc_lock); 1536 1537 data = eth_dev->data; 1538 data->dev_private = pmd; 1539 data->numa_node = numa_node; 1540 data->dev_link = pmd_link; 1541 data->mac_addrs = ether_addr; 1542 data->promiscuous = 1; 1543 data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 1544 1545 eth_dev->dev_ops = &ops; 1546 eth_dev->device = &vdev->device; 1547 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) { 1548 eth_dev->rx_pkt_burst = eth_memif_rx_zc; 1549 eth_dev->tx_pkt_burst = eth_memif_tx_zc; 1550 } else { 1551 eth_dev->rx_pkt_burst = eth_memif_rx; 1552 eth_dev->tx_pkt_burst = eth_memif_tx; 1553 } 1554 1555 rte_eth_dev_probing_finish(eth_dev); 1556 1557 return 0; 1558 } 1559 1560 static int 1561 memif_set_role(const char *key __rte_unused, const char *value, 1562 void *extra_args) 1563 { 1564 enum memif_role_t *role = (enum memif_role_t *)extra_args; 1565 1566 if (strstr(value, "server") != NULL) { 1567 *role = MEMIF_ROLE_SERVER; 1568 } else if (strstr(value, "client") != NULL) { 1569 *role = MEMIF_ROLE_CLIENT; 1570 } else if (strstr(value, "master") != NULL) { 1571 MIF_LOG(NOTICE, "Role argument \"master\" is deprecated, use \"server\""); 1572 *role = MEMIF_ROLE_SERVER; 1573 } else if (strstr(value, "slave") != NULL) { 1574 MIF_LOG(NOTICE, "Role argument \"slave\" is deprecated, use \"client\""); 1575 *role = MEMIF_ROLE_CLIENT; 1576 } else { 1577 MIF_LOG(ERR, "Unknown role: %s.", value); 1578 return -EINVAL; 1579 } 1580 return 0; 1581 } 1582 1583 static int 1584 memif_set_zc(const char *key __rte_unused, const char *value, void *extra_args) 1585 { 1586 uint32_t *flags = (uint32_t *)extra_args; 1587 1588 if (strstr(value, "yes") != NULL) { 1589 if (!rte_mcfg_get_single_file_segments()) { 1590 MIF_LOG(ERR, "Zero-copy doesn't support multi-file segments."); 1591 return -ENOTSUP; 1592 } 1593 *flags |= ETH_MEMIF_FLAG_ZERO_COPY; 1594 } else if (strstr(value, "no") != NULL) { 1595 *flags &= ~ETH_MEMIF_FLAG_ZERO_COPY; 1596 } else { 1597 MIF_LOG(ERR, "Failed to parse zero-copy param: %s.", value); 1598 return -EINVAL; 1599 } 1600 return 0; 1601 } 1602 1603 static int 1604 memif_set_id(const char *key __rte_unused, const char *value, void *extra_args) 1605 { 1606 memif_interface_id_t *id = (memif_interface_id_t *)extra_args; 1607 1608 /* even if parsing fails, 0 is a valid id */ 1609 *id = strtoul(value, NULL, 10); 1610 return 0; 1611 } 1612 1613 static int 1614 memif_set_bs(const char *key __rte_unused, const char *value, void *extra_args) 1615 { 1616 unsigned long tmp; 1617 uint16_t *pkt_buffer_size = (uint16_t *)extra_args; 1618 1619 tmp = strtoul(value, NULL, 10); 1620 if (tmp == 0 || tmp > 0xFFFF) { 1621 MIF_LOG(ERR, "Invalid buffer size: %s.", value); 1622 return -EINVAL; 1623 } 1624 *pkt_buffer_size = tmp; 1625 return 0; 1626 } 1627 1628 static int 1629 memif_set_rs(const char *key __rte_unused, const char *value, void *extra_args) 1630 { 1631 unsigned long tmp; 1632 memif_log2_ring_size_t *log2_ring_size = 1633 (memif_log2_ring_size_t *)extra_args; 1634 1635 tmp = strtoul(value, NULL, 10); 1636 if (tmp == 0 || tmp > ETH_MEMIF_MAX_LOG2_RING_SIZE) { 1637 MIF_LOG(ERR, "Invalid ring size: %s (max %u).", 1638 value, ETH_MEMIF_MAX_LOG2_RING_SIZE); 1639 return -EINVAL; 1640 } 1641 *log2_ring_size = tmp; 1642 return 0; 1643 } 1644 1645 /* check if directory exists and if we have permission to read/write */ 1646 static int 1647 memif_check_socket_filename(const char *filename) 1648 { 1649 char *dir = NULL, *tmp; 1650 uint32_t idx; 1651 int ret = 0; 1652 1653 if (strlen(filename) >= MEMIF_SOCKET_UN_SIZE) { 1654 MIF_LOG(ERR, "Unix socket address too long (max 108)."); 1655 return -1; 1656 } 1657 1658 tmp = strrchr(filename, '/'); 1659 if (tmp != NULL) { 1660 idx = tmp - filename; 1661 dir = rte_zmalloc("memif_tmp", sizeof(char) * (idx + 1), 0); 1662 if (dir == NULL) { 1663 MIF_LOG(ERR, "Failed to allocate memory."); 1664 return -1; 1665 } 1666 strlcpy(dir, filename, sizeof(char) * (idx + 1)); 1667 } 1668 1669 if (dir == NULL || (faccessat(-1, dir, F_OK | R_OK | 1670 W_OK, AT_EACCESS) < 0)) { 1671 MIF_LOG(ERR, "Invalid socket directory."); 1672 ret = -EINVAL; 1673 } 1674 1675 if (dir != NULL) 1676 rte_free(dir); 1677 1678 return ret; 1679 } 1680 1681 static int 1682 memif_set_socket_filename(const char *key __rte_unused, const char *value, 1683 void *extra_args) 1684 { 1685 const char **socket_filename = (const char **)extra_args; 1686 1687 *socket_filename = value; 1688 return 0; 1689 } 1690 1691 static int 1692 memif_set_is_socket_abstract(const char *key __rte_unused, const char *value, void *extra_args) 1693 { 1694 uint32_t *flags = (uint32_t *)extra_args; 1695 1696 if (strstr(value, "yes") != NULL) { 1697 *flags |= ETH_MEMIF_FLAG_SOCKET_ABSTRACT; 1698 } else if (strstr(value, "no") != NULL) { 1699 *flags &= ~ETH_MEMIF_FLAG_SOCKET_ABSTRACT; 1700 } else { 1701 MIF_LOG(ERR, "Failed to parse socket-abstract param: %s.", value); 1702 return -EINVAL; 1703 } 1704 return 0; 1705 } 1706 1707 static int 1708 memif_set_mac(const char *key __rte_unused, const char *value, void *extra_args) 1709 { 1710 struct rte_ether_addr *ether_addr = (struct rte_ether_addr *)extra_args; 1711 1712 if (rte_ether_unformat_addr(value, ether_addr) < 0) 1713 MIF_LOG(WARNING, "Failed to parse mac '%s'.", value); 1714 return 0; 1715 } 1716 1717 static int 1718 memif_set_secret(const char *key __rte_unused, const char *value, void *extra_args) 1719 { 1720 const char **secret = (const char **)extra_args; 1721 1722 *secret = value; 1723 return 0; 1724 } 1725 1726 static int 1727 rte_pmd_memif_probe(struct rte_vdev_device *vdev) 1728 { 1729 RTE_BUILD_BUG_ON(sizeof(memif_msg_t) != 128); 1730 RTE_BUILD_BUG_ON(sizeof(memif_desc_t) != 16); 1731 int ret = 0; 1732 struct rte_kvargs *kvlist; 1733 const char *name = rte_vdev_device_name(vdev); 1734 enum memif_role_t role = MEMIF_ROLE_CLIENT; 1735 memif_interface_id_t id = 0; 1736 uint16_t pkt_buffer_size = ETH_MEMIF_DEFAULT_PKT_BUFFER_SIZE; 1737 memif_log2_ring_size_t log2_ring_size = ETH_MEMIF_DEFAULT_RING_SIZE; 1738 const char *socket_filename = ETH_MEMIF_DEFAULT_SOCKET_FILENAME; 1739 uint32_t flags = 0; 1740 const char *secret = NULL; 1741 struct rte_ether_addr *ether_addr = rte_zmalloc("", 1742 sizeof(struct rte_ether_addr), 0); 1743 struct rte_eth_dev *eth_dev; 1744 1745 rte_eth_random_addr(ether_addr->addr_bytes); 1746 1747 MIF_LOG(INFO, "Initialize MEMIF: %s.", name); 1748 1749 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1750 eth_dev = rte_eth_dev_attach_secondary(name); 1751 if (!eth_dev) { 1752 MIF_LOG(ERR, "Failed to probe %s", name); 1753 return -1; 1754 } 1755 1756 eth_dev->dev_ops = &ops; 1757 eth_dev->device = &vdev->device; 1758 eth_dev->rx_pkt_burst = eth_memif_rx; 1759 eth_dev->tx_pkt_burst = eth_memif_tx; 1760 1761 if (!rte_eal_primary_proc_alive(NULL)) { 1762 MIF_LOG(ERR, "Primary process is missing"); 1763 return -1; 1764 } 1765 1766 eth_dev->process_private = (struct pmd_process_private *) 1767 rte_zmalloc(name, 1768 sizeof(struct pmd_process_private), 1769 RTE_CACHE_LINE_SIZE); 1770 if (eth_dev->process_private == NULL) { 1771 MIF_LOG(ERR, 1772 "Failed to alloc memory for process private"); 1773 return -1; 1774 } 1775 1776 rte_eth_dev_probing_finish(eth_dev); 1777 1778 return 0; 1779 } 1780 1781 ret = rte_mp_action_register(MEMIF_MP_SEND_REGION, memif_mp_send_region); 1782 /* 1783 * Primary process can continue probing, but secondary process won't 1784 * be able to get memory regions information 1785 */ 1786 if (ret < 0 && rte_errno != EEXIST) 1787 MIF_LOG(WARNING, "Failed to register mp action callback: %s", 1788 strerror(rte_errno)); 1789 1790 /* use abstract address by default */ 1791 flags |= ETH_MEMIF_FLAG_SOCKET_ABSTRACT; 1792 1793 kvlist = rte_kvargs_parse(rte_vdev_device_args(vdev), valid_arguments); 1794 1795 /* parse parameters */ 1796 if (kvlist != NULL) { 1797 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ROLE_ARG, 1798 &memif_set_role, &role); 1799 if (ret < 0) 1800 goto exit; 1801 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ID_ARG, 1802 &memif_set_id, &id); 1803 if (ret < 0) 1804 goto exit; 1805 ret = rte_kvargs_process(kvlist, ETH_MEMIF_PKT_BUFFER_SIZE_ARG, 1806 &memif_set_bs, &pkt_buffer_size); 1807 if (ret < 0) 1808 goto exit; 1809 ret = rte_kvargs_process(kvlist, ETH_MEMIF_RING_SIZE_ARG, 1810 &memif_set_rs, &log2_ring_size); 1811 if (ret < 0) 1812 goto exit; 1813 ret = rte_kvargs_process(kvlist, ETH_MEMIF_SOCKET_ARG, 1814 &memif_set_socket_filename, 1815 (void *)(&socket_filename)); 1816 if (ret < 0) 1817 goto exit; 1818 ret = rte_kvargs_process(kvlist, ETH_MEMIF_SOCKET_ABSTRACT_ARG, 1819 &memif_set_is_socket_abstract, &flags); 1820 if (ret < 0) 1821 goto exit; 1822 ret = rte_kvargs_process(kvlist, ETH_MEMIF_MAC_ARG, 1823 &memif_set_mac, ether_addr); 1824 if (ret < 0) 1825 goto exit; 1826 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ZC_ARG, 1827 &memif_set_zc, &flags); 1828 if (ret < 0) 1829 goto exit; 1830 ret = rte_kvargs_process(kvlist, ETH_MEMIF_SECRET_ARG, 1831 &memif_set_secret, (void *)(&secret)); 1832 if (ret < 0) 1833 goto exit; 1834 } 1835 1836 if (!(flags & ETH_MEMIF_FLAG_SOCKET_ABSTRACT)) { 1837 ret = memif_check_socket_filename(socket_filename); 1838 if (ret < 0) 1839 goto exit; 1840 } 1841 1842 /* create interface */ 1843 ret = memif_create(vdev, role, id, flags, socket_filename, 1844 log2_ring_size, pkt_buffer_size, secret, ether_addr); 1845 1846 exit: 1847 if (kvlist != NULL) 1848 rte_kvargs_free(kvlist); 1849 return ret; 1850 } 1851 1852 static int 1853 rte_pmd_memif_remove(struct rte_vdev_device *vdev) 1854 { 1855 struct rte_eth_dev *eth_dev; 1856 1857 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(vdev)); 1858 if (eth_dev == NULL) 1859 return 0; 1860 1861 return rte_eth_dev_close(eth_dev->data->port_id); 1862 } 1863 1864 static struct rte_vdev_driver pmd_memif_drv = { 1865 .probe = rte_pmd_memif_probe, 1866 .remove = rte_pmd_memif_remove, 1867 }; 1868 1869 RTE_PMD_REGISTER_VDEV(net_memif, pmd_memif_drv); 1870 1871 RTE_PMD_REGISTER_PARAM_STRING(net_memif, 1872 ETH_MEMIF_ID_ARG "=<int>" 1873 ETH_MEMIF_ROLE_ARG "=server|client" 1874 ETH_MEMIF_PKT_BUFFER_SIZE_ARG "=<int>" 1875 ETH_MEMIF_RING_SIZE_ARG "=<int>" 1876 ETH_MEMIF_SOCKET_ARG "=<string>" 1877 ETH_MEMIF_SOCKET_ABSTRACT_ARG "=yes|no" 1878 ETH_MEMIF_MAC_ARG "=xx:xx:xx:xx:xx:xx" 1879 ETH_MEMIF_ZC_ARG "=yes|no" 1880 ETH_MEMIF_SECRET_ARG "=<string>"); 1881 1882 RTE_LOG_REGISTER_DEFAULT(memif_logtype, NOTICE); 1883