1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2018-2019 Cisco Systems, Inc. All rights reserved.
9 #include <sys/socket.h>
11 #include <sys/ioctl.h>
13 #include <linux/if_ether.h>
15 #include <sys/eventfd.h>
17 #include <rte_version.h>
19 #include <rte_ether.h>
20 #include <rte_ethdev_driver.h>
21 #include <rte_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>
31 #include "rte_eth_memif.h"
32 #include "memif_socket.h"
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_MAC_ARG "mac"
40 #define ETH_MEMIF_ZC_ARG "zero-copy"
41 #define ETH_MEMIF_SECRET_ARG "secret"
43 static const char * const valid_arguments[] = {
46 ETH_MEMIF_PKT_BUFFER_SIZE_ARG,
47 ETH_MEMIF_RING_SIZE_ARG,
55 #define MEMIF_MP_SEND_REGION "memif_mp_send_region"
58 static int memif_region_init_zc(const struct rte_memseg_list *msl,
59 const struct rte_memseg *ms, void *arg);
64 return ("memif-" RTE_STR(MEMIF_VERSION_MAJOR) "." RTE_STR(MEMIF_VERSION_MINOR));
67 /* Message header to synchronize regions */
68 struct mp_region_msg {
69 char port_name[RTE_DEV_NAME_MAX_LEN];
70 memif_region_index_t idx;
71 memif_region_size_t size;
75 memif_mp_send_region(const struct rte_mp_msg *msg, const void *peer)
77 struct rte_eth_dev *dev;
78 struct pmd_process_private *proc_private;
79 const struct mp_region_msg *msg_param = (const struct mp_region_msg *)msg->param;
80 struct rte_mp_msg reply;
81 struct mp_region_msg *reply_param = (struct mp_region_msg *)reply.param;
85 /* Get requested port */
86 ret = rte_eth_dev_get_port_by_name(msg_param->port_name, &port_id);
88 MIF_LOG(ERR, "Failed to get port id for %s",
89 msg_param->port_name);
92 dev = &rte_eth_devices[port_id];
93 proc_private = dev->process_private;
95 memset(&reply, 0, sizeof(reply));
96 strlcpy(reply.name, msg->name, sizeof(reply.name));
97 reply_param->idx = msg_param->idx;
98 if (proc_private->regions[msg_param->idx] != NULL) {
99 reply_param->size = proc_private->regions[msg_param->idx]->region_size;
100 reply.fds[0] = proc_private->regions[msg_param->idx]->fd;
103 reply.len_param = sizeof(*reply_param);
104 if (rte_mp_reply(&reply, peer) < 0) {
105 MIF_LOG(ERR, "Failed to reply to an add region request");
114 * Called by secondary process, when ports link status goes up.
117 memif_mp_request_regions(struct rte_eth_dev *dev)
120 struct timespec timeout = {.tv_sec = 5, .tv_nsec = 0};
121 struct rte_mp_msg msg, *reply;
122 struct rte_mp_reply replies;
123 struct mp_region_msg *msg_param = (struct mp_region_msg *)msg.param;
124 struct mp_region_msg *reply_param;
125 struct memif_region *r;
126 struct pmd_process_private *proc_private = dev->process_private;
127 struct pmd_internals *pmd = dev->data->dev_private;
128 /* in case of zero-copy slave, only request region 0 */
129 uint16_t max_region_num = (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) ?
130 1 : ETH_MEMIF_MAX_REGION_NUM;
132 MIF_LOG(DEBUG, "Requesting memory regions");
134 for (i = 0; i < max_region_num; i++) {
135 /* Prepare the message */
136 memset(&msg, 0, sizeof(msg));
137 strlcpy(msg.name, MEMIF_MP_SEND_REGION, sizeof(msg.name));
138 strlcpy(msg_param->port_name, dev->data->name,
139 sizeof(msg_param->port_name));
141 msg.len_param = sizeof(*msg_param);
144 ret = rte_mp_request_sync(&msg, &replies, &timeout);
145 if (ret < 0 || replies.nb_received != 1) {
146 MIF_LOG(ERR, "Failed to send mp msg: %d",
151 reply = &replies.msgs[0];
152 reply_param = (struct mp_region_msg *)reply->param;
154 if (reply_param->size > 0) {
155 r = rte_zmalloc("region", sizeof(struct memif_region), 0);
157 MIF_LOG(ERR, "Failed to alloc memif region.");
161 r->region_size = reply_param->size;
162 if (reply->num_fds < 1) {
163 MIF_LOG(ERR, "Missing file descriptor.");
167 r->fd = reply->fds[0];
170 proc_private->regions[reply_param->idx] = r;
171 proc_private->regions_num++;
176 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) {
177 ret = rte_memseg_walk(memif_region_init_zc, (void *)proc_private);
182 return memif_connect(dev);
186 memif_dev_info(struct rte_eth_dev *dev __rte_unused, struct rte_eth_dev_info *dev_info)
188 dev_info->max_mac_addrs = 1;
189 dev_info->max_rx_pktlen = (uint32_t)ETH_FRAME_LEN;
190 dev_info->max_rx_queues = ETH_MEMIF_MAX_NUM_Q_PAIRS;
191 dev_info->max_tx_queues = ETH_MEMIF_MAX_NUM_Q_PAIRS;
192 dev_info->min_rx_bufsize = 0;
197 static memif_ring_t *
198 memif_get_ring(struct pmd_internals *pmd, struct pmd_process_private *proc_private,
199 memif_ring_type_t type, uint16_t ring_num)
201 /* rings only in region 0 */
202 void *p = proc_private->regions[0]->addr;
203 int ring_size = sizeof(memif_ring_t) + sizeof(memif_desc_t) *
204 (1 << pmd->run.log2_ring_size);
206 p = (uint8_t *)p + (ring_num + type * pmd->run.num_s2m_rings) * ring_size;
208 return (memif_ring_t *)p;
211 static memif_region_offset_t
212 memif_get_ring_offset(struct rte_eth_dev *dev, struct memif_queue *mq,
213 memif_ring_type_t type, uint16_t num)
215 struct pmd_internals *pmd = dev->data->dev_private;
216 struct pmd_process_private *proc_private = dev->process_private;
218 return ((uint8_t *)memif_get_ring(pmd, proc_private, type, num) -
219 (uint8_t *)proc_private->regions[mq->region]->addr);
222 static memif_ring_t *
223 memif_get_ring_from_queue(struct pmd_process_private *proc_private,
224 struct memif_queue *mq)
226 struct memif_region *r;
228 r = proc_private->regions[mq->region];
232 return (memif_ring_t *)((uint8_t *)r->addr + mq->ring_offset);
236 memif_get_buffer(struct pmd_process_private *proc_private, memif_desc_t *d)
238 return ((uint8_t *)proc_private->regions[d->region]->addr + d->offset);
241 /* Free mbufs received by master */
243 memif_free_stored_mbufs(struct pmd_process_private *proc_private, struct memif_queue *mq)
245 uint16_t mask = (1 << mq->log2_ring_size) - 1;
246 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq);
248 /* FIXME: improve performance */
249 while (mq->last_tail != ring->tail) {
250 RTE_MBUF_PREFETCH_TO_FREE(mq->buffers[(mq->last_tail + 1) & mask]);
251 /* Decrement refcnt and free mbuf. (current segment) */
252 rte_mbuf_refcnt_update(mq->buffers[mq->last_tail & mask], -1);
253 rte_pktmbuf_free_seg(mq->buffers[mq->last_tail & mask]);
259 memif_pktmbuf_chain(struct rte_mbuf *head, struct rte_mbuf *cur_tail,
260 struct rte_mbuf *tail)
262 /* Check for number-of-segments-overflow */
263 if (unlikely(head->nb_segs + tail->nb_segs > RTE_MBUF_MAX_NB_SEGS))
266 /* Chain 'tail' onto the old tail */
267 cur_tail->next = tail;
269 /* accumulate number of segments and total length. */
270 head->nb_segs = (uint16_t)(head->nb_segs + tail->nb_segs);
272 tail->pkt_len = tail->data_len;
273 head->pkt_len += tail->pkt_len;
279 eth_memif_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
281 struct memif_queue *mq = queue;
282 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private;
283 struct pmd_process_private *proc_private =
284 rte_eth_devices[mq->in_port].process_private;
285 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq);
286 uint16_t cur_slot, last_slot, n_slots, ring_size, mask, s0;
287 uint16_t n_rx_pkts = 0;
288 uint16_t mbuf_size = rte_pktmbuf_data_room_size(mq->mempool) -
289 RTE_PKTMBUF_HEADROOM;
290 uint16_t src_len, src_off, dst_len, dst_off, cp_len;
291 memif_ring_type_t type = mq->type;
293 struct rte_mbuf *mbuf, *mbuf_head, *mbuf_tail;
295 ssize_t size __rte_unused;
298 struct rte_eth_link link;
300 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0))
302 if (unlikely(ring == NULL)) {
303 /* Secondary process will attempt to request regions. */
304 ret = rte_eth_link_get(mq->in_port, &link);
306 MIF_LOG(ERR, "Failed to get port %u link info: %s",
307 mq->in_port, rte_strerror(-ret));
311 /* consume interrupt */
312 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0)
313 size = read(mq->intr_handle.fd, &b, sizeof(b));
315 ring_size = 1 << mq->log2_ring_size;
316 mask = ring_size - 1;
318 if (type == MEMIF_RING_S2M) {
319 cur_slot = mq->last_head;
320 last_slot = __atomic_load_n(&ring->head, __ATOMIC_ACQUIRE);
322 cur_slot = mq->last_tail;
323 last_slot = __atomic_load_n(&ring->tail, __ATOMIC_ACQUIRE);
326 if (cur_slot == last_slot)
328 n_slots = last_slot - cur_slot;
330 while (n_slots && n_rx_pkts < nb_pkts) {
331 mbuf_head = rte_pktmbuf_alloc(mq->mempool);
332 if (unlikely(mbuf_head == NULL))
335 mbuf->port = mq->in_port;
338 s0 = cur_slot & mask;
339 d0 = &ring->desc[s0];
341 src_len = d0->length;
346 dst_len = mbuf_size - dst_off;
351 /* store pointer to tail */
353 mbuf = rte_pktmbuf_alloc(mq->mempool);
354 if (unlikely(mbuf == NULL))
356 mbuf->port = mq->in_port;
357 ret = memif_pktmbuf_chain(mbuf_head, mbuf_tail, mbuf);
358 if (unlikely(ret < 0)) {
359 MIF_LOG(ERR, "number-of-segments-overflow");
360 rte_pktmbuf_free(mbuf);
364 cp_len = RTE_MIN(dst_len, src_len);
366 rte_pktmbuf_data_len(mbuf) += cp_len;
367 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf);
368 if (mbuf != mbuf_head)
369 rte_pktmbuf_pkt_len(mbuf_head) += cp_len;
371 memcpy(rte_pktmbuf_mtod_offset(mbuf, void *, dst_off),
372 (uint8_t *)memif_get_buffer(proc_private, d0) + src_off,
383 if (d0->flags & MEMIF_DESC_FLAG_NEXT)
386 mq->n_bytes += rte_pktmbuf_pkt_len(mbuf_head);
392 if (type == MEMIF_RING_S2M) {
393 __atomic_store_n(&ring->tail, cur_slot, __ATOMIC_RELEASE);
394 mq->last_head = cur_slot;
396 mq->last_tail = cur_slot;
400 if (type == MEMIF_RING_M2S) {
401 head = __atomic_load_n(&ring->head, __ATOMIC_ACQUIRE);
402 n_slots = ring_size - head + mq->last_tail;
406 d0 = &ring->desc[s0];
407 d0->length = pmd->run.pkt_buffer_size;
409 __atomic_store_n(&ring->head, head, __ATOMIC_RELEASE);
412 mq->n_pkts += n_rx_pkts;
417 eth_memif_rx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
419 struct memif_queue *mq = queue;
420 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private;
421 struct pmd_process_private *proc_private =
422 rte_eth_devices[mq->in_port].process_private;
423 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq);
424 uint16_t cur_slot, last_slot, n_slots, ring_size, mask, s0, head;
425 uint16_t n_rx_pkts = 0;
427 struct rte_mbuf *mbuf, *mbuf_tail;
428 struct rte_mbuf *mbuf_head = NULL;
430 struct rte_eth_link link;
432 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0))
434 if (unlikely(ring == NULL)) {
435 /* Secondary process will attempt to request regions. */
436 rte_eth_link_get(mq->in_port, &link);
440 /* consume interrupt */
441 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) {
443 ssize_t size __rte_unused;
444 size = read(mq->intr_handle.fd, &b, sizeof(b));
447 ring_size = 1 << mq->log2_ring_size;
448 mask = ring_size - 1;
450 cur_slot = mq->last_tail;
451 last_slot = ring->tail;
452 if (cur_slot == last_slot)
454 n_slots = last_slot - cur_slot;
456 while (n_slots && n_rx_pkts < nb_pkts) {
457 s0 = cur_slot & mask;
459 d0 = &ring->desc[s0];
460 mbuf_head = mq->buffers[s0];
464 /* prefetch next descriptor */
465 if (n_rx_pkts + 1 < nb_pkts)
466 rte_prefetch0(&ring->desc[(cur_slot + 1) & mask]);
468 mbuf->port = mq->in_port;
469 rte_pktmbuf_data_len(mbuf) = d0->length;
470 rte_pktmbuf_pkt_len(mbuf) = rte_pktmbuf_data_len(mbuf);
472 mq->n_bytes += rte_pktmbuf_data_len(mbuf);
476 if (d0->flags & MEMIF_DESC_FLAG_NEXT) {
477 s0 = cur_slot & mask;
478 d0 = &ring->desc[s0];
480 mbuf = mq->buffers[s0];
481 ret = memif_pktmbuf_chain(mbuf_head, mbuf_tail, mbuf);
482 if (unlikely(ret < 0)) {
483 MIF_LOG(ERR, "number-of-segments-overflow");
493 mq->last_tail = cur_slot;
495 /* Supply master with new buffers */
498 n_slots = ring_size - head + mq->last_tail;
503 ret = rte_pktmbuf_alloc_bulk(mq->mempool, &mq->buffers[head & mask], n_slots);
504 if (unlikely(ret < 0))
510 rte_prefetch0(mq->buffers[head & mask]);
511 d0 = &ring->desc[s0];
512 /* store buffer header */
513 mbuf = mq->buffers[s0];
514 /* populate descriptor */
515 d0->length = rte_pktmbuf_data_room_size(mq->mempool) -
516 RTE_PKTMBUF_HEADROOM;
518 d0->offset = rte_pktmbuf_mtod(mbuf, uint8_t *) -
519 (uint8_t *)proc_private->regions[d0->region]->addr;
525 mq->n_pkts += n_rx_pkts;
531 eth_memif_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
533 struct memif_queue *mq = queue;
534 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private;
535 struct pmd_process_private *proc_private =
536 rte_eth_devices[mq->in_port].process_private;
537 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq);
538 uint16_t slot, saved_slot, n_free, ring_size, mask, n_tx_pkts = 0;
539 uint16_t src_len, src_off, dst_len, dst_off, cp_len;
540 memif_ring_type_t type = mq->type;
542 struct rte_mbuf *mbuf;
543 struct rte_mbuf *mbuf_head;
546 struct rte_eth_link link;
548 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0))
550 if (unlikely(ring == NULL)) {
553 /* Secondary process will attempt to request regions. */
554 ret = rte_eth_link_get(mq->in_port, &link);
556 MIF_LOG(ERR, "Failed to get port %u link info: %s",
557 mq->in_port, rte_strerror(-ret));
561 ring_size = 1 << mq->log2_ring_size;
562 mask = ring_size - 1;
564 n_free = __atomic_load_n(&ring->tail, __ATOMIC_ACQUIRE) - mq->last_tail;
565 mq->last_tail += n_free;
567 if (type == MEMIF_RING_S2M) {
568 slot = __atomic_load_n(&ring->head, __ATOMIC_ACQUIRE);
569 n_free = ring_size - slot + mq->last_tail;
571 slot = __atomic_load_n(&ring->tail, __ATOMIC_ACQUIRE);
572 n_free = __atomic_load_n(&ring->head, __ATOMIC_ACQUIRE) - slot;
575 while (n_tx_pkts < nb_pkts && n_free) {
580 d0 = &ring->desc[slot & mask];
582 dst_len = (type == MEMIF_RING_S2M) ?
583 pmd->run.pkt_buffer_size : d0->length;
587 src_len = rte_pktmbuf_data_len(mbuf);
594 d0->flags |= MEMIF_DESC_FLAG_NEXT;
595 d0 = &ring->desc[slot & mask];
597 dst_len = (type == MEMIF_RING_S2M) ?
598 pmd->run.pkt_buffer_size : d0->length;
605 cp_len = RTE_MIN(dst_len, src_len);
607 memcpy((uint8_t *)memif_get_buffer(proc_private, d0) + dst_off,
608 rte_pktmbuf_mtod_offset(mbuf, void *, src_off),
611 mq->n_bytes += cp_len;
617 d0->length = dst_off;
620 if (rte_pktmbuf_is_contiguous(mbuf) == 0) {
628 rte_pktmbuf_free(mbuf_head);
632 if (type == MEMIF_RING_S2M)
633 __atomic_store_n(&ring->head, slot, __ATOMIC_RELEASE);
635 __atomic_store_n(&ring->tail, slot, __ATOMIC_RELEASE);
637 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) {
639 size = write(mq->intr_handle.fd, &a, sizeof(a));
640 if (unlikely(size < 0)) {
642 "Failed to send interrupt. %s", strerror(errno));
646 mq->n_pkts += n_tx_pkts;
652 memif_tx_one_zc(struct pmd_process_private *proc_private, struct memif_queue *mq,
653 memif_ring_t *ring, struct rte_mbuf *mbuf, const uint16_t mask,
654 uint16_t slot, uint16_t n_free)
660 /* store pointer to mbuf to free it later */
661 mq->buffers[slot & mask] = mbuf;
662 /* Increment refcnt to make sure the buffer is not freed before master
663 * receives it. (current segment)
665 rte_mbuf_refcnt_update(mbuf, 1);
666 /* populate descriptor */
667 d0 = &ring->desc[slot & mask];
668 d0->length = rte_pktmbuf_data_len(mbuf);
669 /* FIXME: get region index */
671 d0->offset = rte_pktmbuf_mtod(mbuf, uint8_t *) -
672 (uint8_t *)proc_private->regions[d0->region]->addr;
675 /* check if buffer is chained */
676 if (rte_pktmbuf_is_contiguous(mbuf) == 0) {
679 /* mark buffer as chained */
680 d0->flags |= MEMIF_DESC_FLAG_NEXT;
683 /* update counters */
693 eth_memif_tx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
695 struct memif_queue *mq = queue;
696 struct pmd_internals *pmd = rte_eth_devices[mq->in_port].data->dev_private;
697 struct pmd_process_private *proc_private =
698 rte_eth_devices[mq->in_port].process_private;
699 memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq);
700 uint16_t slot, n_free, ring_size, mask, n_tx_pkts = 0;
701 memif_ring_type_t type = mq->type;
702 struct rte_eth_link link;
704 if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0))
706 if (unlikely(ring == NULL)) {
707 /* Secondary process will attempt to request regions. */
708 rte_eth_link_get(mq->in_port, &link);
712 ring_size = 1 << mq->log2_ring_size;
713 mask = ring_size - 1;
715 /* free mbufs received by master */
716 memif_free_stored_mbufs(proc_private, mq);
718 /* ring type always MEMIF_RING_S2M */
720 n_free = ring_size - ring->head + mq->last_tail;
724 while (n_free && (n_tx_pkts < nb_pkts)) {
725 while ((n_free > 4) && ((nb_pkts - n_tx_pkts) > 4)) {
726 if ((nb_pkts - n_tx_pkts) > 8) {
727 rte_prefetch0(*bufs + 4);
728 rte_prefetch0(*bufs + 5);
729 rte_prefetch0(*bufs + 6);
730 rte_prefetch0(*bufs + 7);
732 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++,
734 if (unlikely(used_slots < 1))
738 n_free -= used_slots;
740 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++,
742 if (unlikely(used_slots < 1))
746 n_free -= used_slots;
748 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++,
750 if (unlikely(used_slots < 1))
754 n_free -= used_slots;
756 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++,
758 if (unlikely(used_slots < 1))
762 n_free -= used_slots;
764 used_slots = memif_tx_one_zc(proc_private, mq, ring, *bufs++,
766 if (unlikely(used_slots < 1))
770 n_free -= used_slots;
775 /* update ring pointers */
776 if (type == MEMIF_RING_S2M)
781 /* Send interrupt, if enabled. */
782 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) {
784 ssize_t size = write(mq->intr_handle.fd, &a, sizeof(a));
785 if (unlikely(size < 0)) {
787 "Failed to send interrupt. %s", strerror(errno));
791 /* increment queue counters */
792 mq->n_pkts += n_tx_pkts;
798 memif_free_regions(struct rte_eth_dev *dev)
800 struct pmd_process_private *proc_private = dev->process_private;
801 struct pmd_internals *pmd = dev->data->dev_private;
803 struct memif_region *r;
805 /* regions are allocated contiguously, so it's
806 * enough to loop until 'proc_private->regions_num'
808 for (i = 0; i < proc_private->regions_num; i++) {
809 r = proc_private->regions[i];
811 /* This is memzone */
812 if (i > 0 && (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY)) {
817 if (r->addr != NULL) {
818 munmap(r->addr, r->region_size);
825 proc_private->regions[i] = NULL;
828 proc_private->regions_num = 0;
832 memif_region_init_zc(const struct rte_memseg_list *msl, const struct rte_memseg *ms,
835 struct pmd_process_private *proc_private = (struct pmd_process_private *)arg;
836 struct memif_region *r;
838 if (proc_private->regions_num < 1) {
839 MIF_LOG(ERR, "Missing descriptor region");
843 r = proc_private->regions[proc_private->regions_num - 1];
845 if (r->addr != msl->base_va)
846 r = proc_private->regions[++proc_private->regions_num - 1];
849 r = rte_zmalloc("region", sizeof(struct memif_region), 0);
851 MIF_LOG(ERR, "Failed to alloc memif region.");
855 r->addr = msl->base_va;
856 r->region_size = ms->len;
857 r->fd = rte_memseg_get_fd(ms);
860 r->pkt_buffer_offset = 0;
862 proc_private->regions[proc_private->regions_num - 1] = r;
864 r->region_size += ms->len;
871 memif_region_init_shm(struct rte_eth_dev *dev, uint8_t has_buffers)
873 struct pmd_internals *pmd = dev->data->dev_private;
874 struct pmd_process_private *proc_private = dev->process_private;
875 char shm_name[ETH_MEMIF_SHM_NAME_SIZE];
877 struct memif_region *r;
879 if (proc_private->regions_num >= ETH_MEMIF_MAX_REGION_NUM) {
880 MIF_LOG(ERR, "Too many regions.");
884 r = rte_zmalloc("region", sizeof(struct memif_region), 0);
886 MIF_LOG(ERR, "Failed to alloc memif region.");
890 /* calculate buffer offset */
891 r->pkt_buffer_offset = (pmd->run.num_s2m_rings + pmd->run.num_m2s_rings) *
892 (sizeof(memif_ring_t) + sizeof(memif_desc_t) *
893 (1 << pmd->run.log2_ring_size));
895 r->region_size = r->pkt_buffer_offset;
896 /* if region has buffers, add buffers size to region_size */
897 if (has_buffers == 1)
898 r->region_size += (uint32_t)(pmd->run.pkt_buffer_size *
899 (1 << pmd->run.log2_ring_size) *
900 (pmd->run.num_s2m_rings +
901 pmd->run.num_m2s_rings));
903 memset(shm_name, 0, sizeof(char) * ETH_MEMIF_SHM_NAME_SIZE);
904 snprintf(shm_name, ETH_MEMIF_SHM_NAME_SIZE, "memif_region_%d",
905 proc_private->regions_num);
907 r->fd = memfd_create(shm_name, MFD_ALLOW_SEALING);
909 MIF_LOG(ERR, "Failed to create shm file: %s.", strerror(errno));
914 ret = fcntl(r->fd, F_ADD_SEALS, F_SEAL_SHRINK);
916 MIF_LOG(ERR, "Failed to add seals to shm file: %s.", strerror(errno));
920 ret = ftruncate(r->fd, r->region_size);
922 MIF_LOG(ERR, "Failed to truncate shm file: %s.", strerror(errno));
926 r->addr = mmap(NULL, r->region_size, PROT_READ |
927 PROT_WRITE, MAP_SHARED, r->fd, 0);
928 if (r->addr == MAP_FAILED) {
929 MIF_LOG(ERR, "Failed to mmap shm region: %s.", strerror(ret));
934 proc_private->regions[proc_private->regions_num] = r;
935 proc_private->regions_num++;
948 memif_regions_init(struct rte_eth_dev *dev)
950 struct pmd_internals *pmd = dev->data->dev_private;
954 * Zero-copy exposes dpdk memory.
955 * Each memseg list will be represented by memif region.
956 * Zero-copy regions indexing: memseg list idx + 1,
957 * as we already have region 0 reserved for descriptors.
959 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) {
960 /* create region idx 0 containing descriptors */
961 ret = memif_region_init_shm(dev, 0);
964 ret = rte_memseg_walk(memif_region_init_zc, (void *)dev->process_private);
968 /* create one memory region contaning rings and buffers */
969 ret = memif_region_init_shm(dev, /* has buffers */ 1);
978 memif_init_rings(struct rte_eth_dev *dev)
980 struct pmd_internals *pmd = dev->data->dev_private;
981 struct pmd_process_private *proc_private = dev->process_private;
986 for (i = 0; i < pmd->run.num_s2m_rings; i++) {
987 ring = memif_get_ring(pmd, proc_private, MEMIF_RING_S2M, i);
988 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED);
989 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED);
990 ring->cookie = MEMIF_COOKIE;
993 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY)
996 for (j = 0; j < (1 << pmd->run.log2_ring_size); j++) {
997 slot = i * (1 << pmd->run.log2_ring_size) + j;
998 ring->desc[j].region = 0;
999 ring->desc[j].offset =
1000 proc_private->regions[0]->pkt_buffer_offset +
1001 (uint32_t)(slot * pmd->run.pkt_buffer_size);
1002 ring->desc[j].length = pmd->run.pkt_buffer_size;
1006 for (i = 0; i < pmd->run.num_m2s_rings; i++) {
1007 ring = memif_get_ring(pmd, proc_private, MEMIF_RING_M2S, i);
1008 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED);
1009 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED);
1010 ring->cookie = MEMIF_COOKIE;
1013 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY)
1016 for (j = 0; j < (1 << pmd->run.log2_ring_size); j++) {
1017 slot = (i + pmd->run.num_s2m_rings) *
1018 (1 << pmd->run.log2_ring_size) + j;
1019 ring->desc[j].region = 0;
1020 ring->desc[j].offset =
1021 proc_private->regions[0]->pkt_buffer_offset +
1022 (uint32_t)(slot * pmd->run.pkt_buffer_size);
1023 ring->desc[j].length = pmd->run.pkt_buffer_size;
1028 /* called only by slave */
1030 memif_init_queues(struct rte_eth_dev *dev)
1032 struct pmd_internals *pmd = dev->data->dev_private;
1033 struct memif_queue *mq;
1036 for (i = 0; i < pmd->run.num_s2m_rings; i++) {
1037 mq = dev->data->tx_queues[i];
1038 mq->log2_ring_size = pmd->run.log2_ring_size;
1039 /* queues located only in region 0 */
1041 mq->ring_offset = memif_get_ring_offset(dev, mq, MEMIF_RING_S2M, i);
1044 mq->intr_handle.fd = eventfd(0, EFD_NONBLOCK);
1045 if (mq->intr_handle.fd < 0) {
1047 "Failed to create eventfd for tx queue %d: %s.", i,
1051 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) {
1052 mq->buffers = rte_zmalloc("bufs", sizeof(struct rte_mbuf *) *
1053 (1 << mq->log2_ring_size), 0);
1054 if (mq->buffers == NULL)
1059 for (i = 0; i < pmd->run.num_m2s_rings; i++) {
1060 mq = dev->data->rx_queues[i];
1061 mq->log2_ring_size = pmd->run.log2_ring_size;
1062 /* queues located only in region 0 */
1064 mq->ring_offset = memif_get_ring_offset(dev, mq, MEMIF_RING_M2S, i);
1067 mq->intr_handle.fd = eventfd(0, EFD_NONBLOCK);
1068 if (mq->intr_handle.fd < 0) {
1070 "Failed to create eventfd for rx queue %d: %s.", i,
1074 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) {
1075 mq->buffers = rte_zmalloc("bufs", sizeof(struct rte_mbuf *) *
1076 (1 << mq->log2_ring_size), 0);
1077 if (mq->buffers == NULL)
1085 memif_init_regions_and_queues(struct rte_eth_dev *dev)
1089 ret = memif_regions_init(dev);
1093 memif_init_rings(dev);
1095 ret = memif_init_queues(dev);
1103 memif_connect(struct rte_eth_dev *dev)
1105 struct pmd_internals *pmd = dev->data->dev_private;
1106 struct pmd_process_private *proc_private = dev->process_private;
1107 struct memif_region *mr;
1108 struct memif_queue *mq;
1112 for (i = 0; i < proc_private->regions_num; i++) {
1113 mr = proc_private->regions[i];
1115 if (mr->addr == NULL) {
1118 mr->addr = mmap(NULL, mr->region_size,
1119 PROT_READ | PROT_WRITE,
1120 MAP_SHARED, mr->fd, 0);
1121 if (mr->addr == MAP_FAILED) {
1122 MIF_LOG(ERR, "mmap failed: %s\n",
1127 if (i > 0 && (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY)) {
1128 /* close memseg file */
1135 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1136 for (i = 0; i < pmd->run.num_s2m_rings; i++) {
1137 mq = (pmd->role == MEMIF_ROLE_SLAVE) ?
1138 dev->data->tx_queues[i] : dev->data->rx_queues[i];
1139 ring = memif_get_ring_from_queue(proc_private, mq);
1140 if (ring == NULL || ring->cookie != MEMIF_COOKIE) {
1141 MIF_LOG(ERR, "Wrong ring");
1144 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED);
1145 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED);
1148 /* enable polling mode */
1149 if (pmd->role == MEMIF_ROLE_MASTER)
1150 ring->flags = MEMIF_RING_FLAG_MASK_INT;
1152 for (i = 0; i < pmd->run.num_m2s_rings; i++) {
1153 mq = (pmd->role == MEMIF_ROLE_SLAVE) ?
1154 dev->data->rx_queues[i] : dev->data->tx_queues[i];
1155 ring = memif_get_ring_from_queue(proc_private, mq);
1156 if (ring == NULL || ring->cookie != MEMIF_COOKIE) {
1157 MIF_LOG(ERR, "Wrong ring");
1160 __atomic_store_n(&ring->head, 0, __ATOMIC_RELAXED);
1161 __atomic_store_n(&ring->tail, 0, __ATOMIC_RELAXED);
1164 /* enable polling mode */
1165 if (pmd->role == MEMIF_ROLE_SLAVE)
1166 ring->flags = MEMIF_RING_FLAG_MASK_INT;
1169 pmd->flags &= ~ETH_MEMIF_FLAG_CONNECTING;
1170 pmd->flags |= ETH_MEMIF_FLAG_CONNECTED;
1171 dev->data->dev_link.link_status = ETH_LINK_UP;
1173 MIF_LOG(INFO, "Connected.");
1178 memif_dev_start(struct rte_eth_dev *dev)
1180 struct pmd_internals *pmd = dev->data->dev_private;
1183 switch (pmd->role) {
1184 case MEMIF_ROLE_SLAVE:
1185 ret = memif_connect_slave(dev);
1187 case MEMIF_ROLE_MASTER:
1188 ret = memif_connect_master(dev);
1191 MIF_LOG(ERR, "Unknown role: %d.", pmd->role);
1200 memif_dev_close(struct rte_eth_dev *dev)
1202 struct pmd_internals *pmd = dev->data->dev_private;
1205 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1206 memif_msg_enq_disconnect(pmd->cc, "Device closed", 0);
1207 memif_disconnect(dev);
1209 for (i = 0; i < dev->data->nb_rx_queues; i++)
1210 (*dev->dev_ops->rx_queue_release)(dev->data->rx_queues[i]);
1211 for (i = 0; i < dev->data->nb_tx_queues; i++)
1212 (*dev->dev_ops->tx_queue_release)(dev->data->tx_queues[i]);
1214 memif_socket_remove_device(dev);
1216 memif_disconnect(dev);
1219 rte_free(dev->process_private);
1223 memif_dev_configure(struct rte_eth_dev *dev)
1225 struct pmd_internals *pmd = dev->data->dev_private;
1231 pmd->cfg.num_s2m_rings = (pmd->role == MEMIF_ROLE_SLAVE) ?
1232 dev->data->nb_tx_queues : dev->data->nb_rx_queues;
1238 pmd->cfg.num_m2s_rings = (pmd->role == MEMIF_ROLE_SLAVE) ?
1239 dev->data->nb_rx_queues : dev->data->nb_tx_queues;
1245 memif_tx_queue_setup(struct rte_eth_dev *dev,
1247 uint16_t nb_tx_desc __rte_unused,
1248 unsigned int socket_id __rte_unused,
1249 const struct rte_eth_txconf *tx_conf __rte_unused)
1251 struct pmd_internals *pmd = dev->data->dev_private;
1252 struct memif_queue *mq;
1254 mq = rte_zmalloc("tx-queue", sizeof(struct memif_queue), 0);
1256 MIF_LOG(ERR, "Failed to allocate tx queue id: %u", qid);
1261 (pmd->role == MEMIF_ROLE_SLAVE) ? MEMIF_RING_S2M : MEMIF_RING_M2S;
1264 mq->intr_handle.fd = -1;
1265 mq->intr_handle.type = RTE_INTR_HANDLE_EXT;
1266 mq->in_port = dev->data->port_id;
1267 dev->data->tx_queues[qid] = mq;
1273 memif_rx_queue_setup(struct rte_eth_dev *dev,
1275 uint16_t nb_rx_desc __rte_unused,
1276 unsigned int socket_id __rte_unused,
1277 const struct rte_eth_rxconf *rx_conf __rte_unused,
1278 struct rte_mempool *mb_pool)
1280 struct pmd_internals *pmd = dev->data->dev_private;
1281 struct memif_queue *mq;
1283 mq = rte_zmalloc("rx-queue", sizeof(struct memif_queue), 0);
1285 MIF_LOG(ERR, "Failed to allocate rx queue id: %u", qid);
1289 mq->type = (pmd->role == MEMIF_ROLE_SLAVE) ? MEMIF_RING_M2S : MEMIF_RING_S2M;
1292 mq->intr_handle.fd = -1;
1293 mq->intr_handle.type = RTE_INTR_HANDLE_EXT;
1294 mq->mempool = mb_pool;
1295 mq->in_port = dev->data->port_id;
1296 dev->data->rx_queues[qid] = mq;
1302 memif_queue_release(void *queue)
1304 struct memif_queue *mq = (struct memif_queue *)queue;
1313 memif_link_update(struct rte_eth_dev *dev,
1314 int wait_to_complete __rte_unused)
1316 struct pmd_process_private *proc_private;
1318 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1319 proc_private = dev->process_private;
1320 if (dev->data->dev_link.link_status == ETH_LINK_UP &&
1321 proc_private->regions_num == 0) {
1322 memif_mp_request_regions(dev);
1323 } else if (dev->data->dev_link.link_status == ETH_LINK_DOWN &&
1324 proc_private->regions_num > 0) {
1325 memif_free_regions(dev);
1332 memif_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1334 struct pmd_internals *pmd = dev->data->dev_private;
1335 struct memif_queue *mq;
1339 stats->ipackets = 0;
1341 stats->opackets = 0;
1344 tmp = (pmd->role == MEMIF_ROLE_SLAVE) ? pmd->run.num_s2m_rings :
1345 pmd->run.num_m2s_rings;
1346 nq = (tmp < RTE_ETHDEV_QUEUE_STAT_CNTRS) ? tmp :
1347 RTE_ETHDEV_QUEUE_STAT_CNTRS;
1350 for (i = 0; i < nq; i++) {
1351 mq = dev->data->rx_queues[i];
1352 stats->q_ipackets[i] = mq->n_pkts;
1353 stats->q_ibytes[i] = mq->n_bytes;
1354 stats->ipackets += mq->n_pkts;
1355 stats->ibytes += mq->n_bytes;
1358 tmp = (pmd->role == MEMIF_ROLE_SLAVE) ? pmd->run.num_m2s_rings :
1359 pmd->run.num_s2m_rings;
1360 nq = (tmp < RTE_ETHDEV_QUEUE_STAT_CNTRS) ? tmp :
1361 RTE_ETHDEV_QUEUE_STAT_CNTRS;
1364 for (i = 0; i < nq; i++) {
1365 mq = dev->data->tx_queues[i];
1366 stats->q_opackets[i] = mq->n_pkts;
1367 stats->q_obytes[i] = mq->n_bytes;
1368 stats->opackets += mq->n_pkts;
1369 stats->obytes += mq->n_bytes;
1375 memif_stats_reset(struct rte_eth_dev *dev)
1377 struct pmd_internals *pmd = dev->data->dev_private;
1379 struct memif_queue *mq;
1381 for (i = 0; i < pmd->run.num_s2m_rings; i++) {
1382 mq = (pmd->role == MEMIF_ROLE_SLAVE) ? dev->data->tx_queues[i] :
1383 dev->data->rx_queues[i];
1387 for (i = 0; i < pmd->run.num_m2s_rings; i++) {
1388 mq = (pmd->role == MEMIF_ROLE_SLAVE) ? dev->data->rx_queues[i] :
1389 dev->data->tx_queues[i];
1398 memif_rx_queue_intr_enable(struct rte_eth_dev *dev __rte_unused,
1399 uint16_t qid __rte_unused)
1401 MIF_LOG(WARNING, "Interrupt mode not supported.");
1407 memif_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t qid __rte_unused)
1409 struct pmd_internals *pmd __rte_unused = dev->data->dev_private;
1414 static const struct eth_dev_ops ops = {
1415 .dev_start = memif_dev_start,
1416 .dev_close = memif_dev_close,
1417 .dev_infos_get = memif_dev_info,
1418 .dev_configure = memif_dev_configure,
1419 .tx_queue_setup = memif_tx_queue_setup,
1420 .rx_queue_setup = memif_rx_queue_setup,
1421 .rx_queue_release = memif_queue_release,
1422 .tx_queue_release = memif_queue_release,
1423 .rx_queue_intr_enable = memif_rx_queue_intr_enable,
1424 .rx_queue_intr_disable = memif_rx_queue_intr_disable,
1425 .link_update = memif_link_update,
1426 .stats_get = memif_stats_get,
1427 .stats_reset = memif_stats_reset,
1431 memif_create(struct rte_vdev_device *vdev, enum memif_role_t role,
1432 memif_interface_id_t id, uint32_t flags,
1433 const char *socket_filename,
1434 memif_log2_ring_size_t log2_ring_size,
1435 uint16_t pkt_buffer_size, const char *secret,
1436 struct rte_ether_addr *ether_addr)
1439 struct rte_eth_dev *eth_dev;
1440 struct rte_eth_dev_data *data;
1441 struct pmd_internals *pmd;
1442 struct pmd_process_private *process_private;
1443 const unsigned int numa_node = vdev->device.numa_node;
1444 const char *name = rte_vdev_device_name(vdev);
1446 eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*pmd));
1447 if (eth_dev == NULL) {
1448 MIF_LOG(ERR, "%s: Unable to allocate device struct.", name);
1452 process_private = (struct pmd_process_private *)
1453 rte_zmalloc(name, sizeof(struct pmd_process_private),
1454 RTE_CACHE_LINE_SIZE);
1456 if (process_private == NULL) {
1457 MIF_LOG(ERR, "Failed to alloc memory for process private");
1460 eth_dev->process_private = process_private;
1462 pmd = eth_dev->data->dev_private;
1463 memset(pmd, 0, sizeof(*pmd));
1467 pmd->flags |= ETH_MEMIF_FLAG_DISABLED;
1469 /* Zero-copy flag irelevant to master. */
1470 if (pmd->role == MEMIF_ROLE_MASTER)
1471 pmd->flags &= ~ETH_MEMIF_FLAG_ZERO_COPY;
1473 ret = memif_socket_init(eth_dev, socket_filename);
1477 memset(pmd->secret, 0, sizeof(char) * ETH_MEMIF_SECRET_SIZE);
1479 strlcpy(pmd->secret, secret, sizeof(pmd->secret));
1481 pmd->cfg.log2_ring_size = log2_ring_size;
1482 /* set in .dev_configure() */
1483 pmd->cfg.num_s2m_rings = 0;
1484 pmd->cfg.num_m2s_rings = 0;
1486 pmd->cfg.pkt_buffer_size = pkt_buffer_size;
1488 data = eth_dev->data;
1489 data->dev_private = pmd;
1490 data->numa_node = numa_node;
1491 data->mac_addrs = ether_addr;
1493 eth_dev->dev_ops = &ops;
1494 eth_dev->device = &vdev->device;
1495 if (pmd->flags & ETH_MEMIF_FLAG_ZERO_COPY) {
1496 eth_dev->rx_pkt_burst = eth_memif_rx_zc;
1497 eth_dev->tx_pkt_burst = eth_memif_tx_zc;
1499 eth_dev->rx_pkt_burst = eth_memif_rx;
1500 eth_dev->tx_pkt_burst = eth_memif_tx;
1504 eth_dev->data->dev_flags &= RTE_ETH_DEV_CLOSE_REMOVE;
1506 rte_eth_dev_probing_finish(eth_dev);
1512 memif_set_role(const char *key __rte_unused, const char *value,
1515 enum memif_role_t *role = (enum memif_role_t *)extra_args;
1517 if (strstr(value, "master") != NULL) {
1518 *role = MEMIF_ROLE_MASTER;
1519 } else if (strstr(value, "slave") != NULL) {
1520 *role = MEMIF_ROLE_SLAVE;
1522 MIF_LOG(ERR, "Unknown role: %s.", value);
1529 memif_set_zc(const char *key __rte_unused, const char *value, void *extra_args)
1531 uint32_t *flags = (uint32_t *)extra_args;
1533 if (strstr(value, "yes") != NULL) {
1534 if (!rte_mcfg_get_single_file_segments()) {
1535 MIF_LOG(ERR, "Zero-copy doesn't support multi-file segments.");
1538 *flags |= ETH_MEMIF_FLAG_ZERO_COPY;
1539 } else if (strstr(value, "no") != NULL) {
1540 *flags &= ~ETH_MEMIF_FLAG_ZERO_COPY;
1542 MIF_LOG(ERR, "Failed to parse zero-copy param: %s.", value);
1549 memif_set_id(const char *key __rte_unused, const char *value, void *extra_args)
1551 memif_interface_id_t *id = (memif_interface_id_t *)extra_args;
1553 /* even if parsing fails, 0 is a valid id */
1554 *id = strtoul(value, NULL, 10);
1559 memif_set_bs(const char *key __rte_unused, const char *value, void *extra_args)
1562 uint16_t *pkt_buffer_size = (uint16_t *)extra_args;
1564 tmp = strtoul(value, NULL, 10);
1565 if (tmp == 0 || tmp > 0xFFFF) {
1566 MIF_LOG(ERR, "Invalid buffer size: %s.", value);
1569 *pkt_buffer_size = tmp;
1574 memif_set_rs(const char *key __rte_unused, const char *value, void *extra_args)
1577 memif_log2_ring_size_t *log2_ring_size =
1578 (memif_log2_ring_size_t *)extra_args;
1580 tmp = strtoul(value, NULL, 10);
1581 if (tmp == 0 || tmp > ETH_MEMIF_MAX_LOG2_RING_SIZE) {
1582 MIF_LOG(ERR, "Invalid ring size: %s (max %u).",
1583 value, ETH_MEMIF_MAX_LOG2_RING_SIZE);
1586 *log2_ring_size = tmp;
1590 /* check if directory exists and if we have permission to read/write */
1592 memif_check_socket_filename(const char *filename)
1594 char *dir = NULL, *tmp;
1598 if (strlen(filename) >= MEMIF_SOCKET_UN_SIZE) {
1599 MIF_LOG(ERR, "Unix socket address too long (max 108).");
1603 tmp = strrchr(filename, '/');
1605 idx = tmp - filename;
1606 dir = rte_zmalloc("memif_tmp", sizeof(char) * (idx + 1), 0);
1608 MIF_LOG(ERR, "Failed to allocate memory.");
1611 strlcpy(dir, filename, sizeof(char) * (idx + 1));
1614 if (dir == NULL || (faccessat(-1, dir, F_OK | R_OK |
1615 W_OK, AT_EACCESS) < 0)) {
1616 MIF_LOG(ERR, "Invalid socket directory.");
1627 memif_set_socket_filename(const char *key __rte_unused, const char *value,
1630 const char **socket_filename = (const char **)extra_args;
1632 *socket_filename = value;
1633 return memif_check_socket_filename(*socket_filename);
1637 memif_set_mac(const char *key __rte_unused, const char *value, void *extra_args)
1639 struct rte_ether_addr *ether_addr = (struct rte_ether_addr *)extra_args;
1641 if (rte_ether_unformat_addr(value, ether_addr) < 0)
1642 MIF_LOG(WARNING, "Failed to parse mac '%s'.", value);
1647 memif_set_secret(const char *key __rte_unused, const char *value, void *extra_args)
1649 const char **secret = (const char **)extra_args;
1656 rte_pmd_memif_probe(struct rte_vdev_device *vdev)
1658 RTE_BUILD_BUG_ON(sizeof(memif_msg_t) != 128);
1659 RTE_BUILD_BUG_ON(sizeof(memif_desc_t) != 16);
1661 struct rte_kvargs *kvlist;
1662 const char *name = rte_vdev_device_name(vdev);
1663 enum memif_role_t role = MEMIF_ROLE_SLAVE;
1664 memif_interface_id_t id = 0;
1665 uint16_t pkt_buffer_size = ETH_MEMIF_DEFAULT_PKT_BUFFER_SIZE;
1666 memif_log2_ring_size_t log2_ring_size = ETH_MEMIF_DEFAULT_RING_SIZE;
1667 const char *socket_filename = ETH_MEMIF_DEFAULT_SOCKET_FILENAME;
1669 const char *secret = NULL;
1670 struct rte_ether_addr *ether_addr = rte_zmalloc("",
1671 sizeof(struct rte_ether_addr), 0);
1672 struct rte_eth_dev *eth_dev;
1674 rte_eth_random_addr(ether_addr->addr_bytes);
1676 MIF_LOG(INFO, "Initialize MEMIF: %s.", name);
1678 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1679 eth_dev = rte_eth_dev_attach_secondary(name);
1681 MIF_LOG(ERR, "Failed to probe %s", name);
1685 eth_dev->dev_ops = &ops;
1686 eth_dev->device = &vdev->device;
1687 eth_dev->rx_pkt_burst = eth_memif_rx;
1688 eth_dev->tx_pkt_burst = eth_memif_tx;
1690 if (!rte_eal_primary_proc_alive(NULL)) {
1691 MIF_LOG(ERR, "Primary process is missing");
1695 eth_dev->process_private = (struct pmd_process_private *)
1697 sizeof(struct pmd_process_private),
1698 RTE_CACHE_LINE_SIZE);
1699 if (eth_dev->process_private == NULL) {
1701 "Failed to alloc memory for process private");
1705 rte_eth_dev_probing_finish(eth_dev);
1710 ret = rte_mp_action_register(MEMIF_MP_SEND_REGION, memif_mp_send_region);
1712 * Primary process can continue probing, but secondary process won't
1713 * be able to get memory regions information
1715 if (ret < 0 && rte_errno != EEXIST)
1716 MIF_LOG(WARNING, "Failed to register mp action callback: %s",
1717 strerror(rte_errno));
1719 kvlist = rte_kvargs_parse(rte_vdev_device_args(vdev), valid_arguments);
1721 /* parse parameters */
1722 if (kvlist != NULL) {
1723 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ROLE_ARG,
1724 &memif_set_role, &role);
1727 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ID_ARG,
1728 &memif_set_id, &id);
1731 ret = rte_kvargs_process(kvlist, ETH_MEMIF_PKT_BUFFER_SIZE_ARG,
1732 &memif_set_bs, &pkt_buffer_size);
1735 ret = rte_kvargs_process(kvlist, ETH_MEMIF_RING_SIZE_ARG,
1736 &memif_set_rs, &log2_ring_size);
1739 ret = rte_kvargs_process(kvlist, ETH_MEMIF_SOCKET_ARG,
1740 &memif_set_socket_filename,
1741 (void *)(&socket_filename));
1744 ret = rte_kvargs_process(kvlist, ETH_MEMIF_MAC_ARG,
1745 &memif_set_mac, ether_addr);
1748 ret = rte_kvargs_process(kvlist, ETH_MEMIF_ZC_ARG,
1749 &memif_set_zc, &flags);
1752 ret = rte_kvargs_process(kvlist, ETH_MEMIF_SECRET_ARG,
1753 &memif_set_secret, (void *)(&secret));
1758 /* create interface */
1759 ret = memif_create(vdev, role, id, flags, socket_filename,
1760 log2_ring_size, pkt_buffer_size, secret, ether_addr);
1764 rte_kvargs_free(kvlist);
1769 rte_pmd_memif_remove(struct rte_vdev_device *vdev)
1771 struct rte_eth_dev *eth_dev;
1773 eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(vdev));
1774 if (eth_dev == NULL)
1777 rte_eth_dev_close(eth_dev->data->port_id);
1782 static struct rte_vdev_driver pmd_memif_drv = {
1783 .probe = rte_pmd_memif_probe,
1784 .remove = rte_pmd_memif_remove,
1787 RTE_PMD_REGISTER_VDEV(net_memif, pmd_memif_drv);
1789 RTE_PMD_REGISTER_PARAM_STRING(net_memif,
1790 ETH_MEMIF_ID_ARG "=<int>"
1791 ETH_MEMIF_ROLE_ARG "=master|slave"
1792 ETH_MEMIF_PKT_BUFFER_SIZE_ARG "=<int>"
1793 ETH_MEMIF_RING_SIZE_ARG "=<int>"
1794 ETH_MEMIF_SOCKET_ARG "=<string>"
1795 ETH_MEMIF_MAC_ARG "=xx:xx:xx:xx:xx:xx"
1796 ETH_MEMIF_ZC_ARG "=yes|no"
1797 ETH_MEMIF_SECRET_ARG "=<string>");
1801 RTE_INIT(memif_init_log)
1803 memif_logtype = rte_log_register("pmd.net.memif");
1804 if (memif_logtype >= 0)
1805 rte_log_set_level(memif_logtype, RTE_LOG_NOTICE);