2 *------------------------------------------------------------------
3 * Copyright (c) 2018 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
21 #include <linux/if_link.h>
22 #include <linux/if_ether.h>
24 #include <vppinfra/linux/sysfs.h>
25 #include <vlib/vlib.h>
26 #include <vlib/unix/unix.h>
27 #include <vlib/pci/pci.h>
28 #include <vnet/ethernet/ethernet.h>
30 #include <rdma/rdma.h>
32 /* Default RSS hash key (from DPDK MLX driver) */
33 static u8 rdma_rss_hash_key[] = {
34 0x2c, 0xc6, 0x81, 0xd1,
35 0x5b, 0xdb, 0xf4, 0xf7,
36 0xfc, 0xa2, 0x83, 0x19,
37 0xdb, 0x1a, 0x3e, 0x94,
38 0x6b, 0x9e, 0x38, 0xd9,
39 0x2c, 0x9c, 0x03, 0xd1,
40 0xad, 0x99, 0x44, 0xa7,
41 0xd9, 0x56, 0x3d, 0x59,
42 0x06, 0x3c, 0x25, 0xf3,
43 0xfc, 0x1f, 0xdc, 0x2a,
46 rdma_main_t rdma_main;
48 #define rdma_log__(lvl, dev, f, ...) \
50 vlib_log((lvl), rdma_main.log_class, "%s: " f, \
51 &(dev)->name, ##__VA_ARGS__); \
54 #define rdma_log(lvl, dev, f, ...) \
55 rdma_log__((lvl), (dev), "%s (%d): " f, strerror(errno), errno, ##__VA_ARGS__)
57 static struct ibv_flow *
58 rdma_rxq_init_flow (const rdma_device_t * rd, struct ibv_qp *qp,
59 const mac_address_t * mac, const mac_address_t * mask,
62 struct ibv_flow *flow;
63 struct raw_eth_flow_attr
65 struct ibv_flow_attr attr;
66 struct ibv_flow_spec_eth spec_eth;
67 } __attribute__ ((packed)) fa;
69 memset (&fa, 0, sizeof (fa));
70 fa.attr.num_of_specs = 1;
72 fa.attr.flags = flags;
73 fa.spec_eth.type = IBV_FLOW_SPEC_ETH;
74 fa.spec_eth.size = sizeof (struct ibv_flow_spec_eth);
76 memcpy (fa.spec_eth.val.dst_mac, mac, sizeof (fa.spec_eth.val.dst_mac));
77 memcpy (fa.spec_eth.mask.dst_mac, mask, sizeof (fa.spec_eth.mask.dst_mac));
79 flow = ibv_create_flow (qp, &fa.attr);
81 rdma_log (VLIB_LOG_LEVEL_ERR, rd, "ibv_create_flow() failed");
86 rdma_rxq_destroy_flow (const rdma_device_t * rd, struct ibv_flow **flow)
91 if (ibv_destroy_flow (*flow))
93 rdma_log (VLIB_LOG_LEVEL_ERR, rd, "ibv_destroy_flow() failed");
102 rdma_dev_set_promisc (rdma_device_t * rd)
104 const mac_address_t all = {.bytes = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0} };
107 err = rdma_rxq_destroy_flow (rd, &rd->flow_mcast);
111 err = rdma_rxq_destroy_flow (rd, &rd->flow_ucast);
115 rd->flow_ucast = rdma_rxq_init_flow (rd, rd->rx_qp, &all, &all, 0);
119 rd->flags |= RDMA_DEVICE_F_PROMISC;
124 rdma_dev_set_ucast (rdma_device_t * rd)
126 const mac_address_t ucast = {.bytes = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
128 const mac_address_t mcast = {.bytes = {0x1, 0x0, 0x0, 0x0, 0x0, 0x0} };
131 err = rdma_rxq_destroy_flow (rd, &rd->flow_mcast);
135 err = rdma_rxq_destroy_flow (rd, &rd->flow_ucast);
139 /* receive only packets with src = our MAC */
140 rd->flow_ucast = rdma_rxq_init_flow (rd, rd->rx_qp, &rd->hwaddr, &ucast, 0);
144 /* receive multicast packets */
145 rd->flow_mcast = rdma_rxq_init_flow (rd, rd->rx_qp, &mcast, &mcast,
146 IBV_FLOW_ATTR_FLAGS_DONT_TRAP
147 /* let others receive mcast packet too (eg. Linux) */
152 rd->flags &= ~RDMA_DEVICE_F_PROMISC;
156 static clib_error_t *
157 rdma_mac_change (vnet_hw_interface_t * hw, const u8 * old, const u8 * new)
159 rdma_main_t *rm = &rdma_main;
160 rdma_device_t *rd = vec_elt_at_index (rm->devices, hw->dev_instance);
161 mac_address_from_bytes (&rd->hwaddr, new);
162 if (!(rd->flags & RDMA_DEVICE_F_PROMISC) && rdma_dev_set_ucast (rd))
164 mac_address_from_bytes (&rd->hwaddr, old);
165 return clib_error_return_unix (0, "MAC update failed");
171 rdma_dev_change_mtu (rdma_device_t * rd)
173 rdma_log__ (VLIB_LOG_LEVEL_ERR, rd, "MTU change not supported");
178 rdma_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw, u32 flags)
180 rdma_main_t *rm = &rdma_main;
181 rdma_device_t *rd = vec_elt_at_index (rm->devices, hw->dev_instance);
186 return rdma_dev_set_ucast (rd);
187 case ETHERNET_INTERFACE_FLAG_ACCEPT_ALL:
188 return rdma_dev_set_promisc (rd);
189 case ETHERNET_INTERFACE_FLAG_MTU:
190 return rdma_dev_change_mtu (rd);
193 rdma_log__ (VLIB_LOG_LEVEL_ERR, rd, "unknown flag %x requested", flags);
198 rdma_update_state (vnet_main_t * vnm, rdma_device_t * rd, int port)
200 struct ibv_port_attr attr;
204 if (ibv_query_port (rd->ctx, port, &attr))
206 vnet_hw_interface_set_link_speed (vnm, rd->hw_if_index, 0);
207 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
214 case IBV_PORT_ACTIVE: /* fallthrough */
215 case IBV_PORT_ACTIVE_DEFER:
216 rd->flags |= RDMA_DEVICE_F_LINK_UP;
217 vnet_hw_interface_set_flags (vnm, rd->hw_if_index,
218 VNET_HW_INTERFACE_FLAG_LINK_UP);
221 rd->flags &= ~RDMA_DEVICE_F_LINK_UP;
222 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
227 switch (attr.active_width)
242 switch (attr.active_speed)
250 case 4: /* fallthrough */
261 vnet_hw_interface_set_link_speed (vnm, rd->hw_if_index, width * speed);
264 static clib_error_t *
265 rdma_async_event_error_ready (clib_file_t * f)
267 rdma_main_t *rm = &rdma_main;
268 rdma_device_t *rd = vec_elt_at_index (rm->devices, f->private_data);
269 return clib_error_return (0, "RDMA: %s: async event error", rd->name);
272 static clib_error_t *
273 rdma_async_event_read_ready (clib_file_t * f)
275 vnet_main_t *vnm = vnet_get_main ();
276 rdma_main_t *rm = &rdma_main;
277 rdma_device_t *rd = vec_elt_at_index (rm->devices, f->private_data);
279 struct ibv_async_event event;
280 ret = ibv_get_async_event (rd->ctx, &event);
282 return clib_error_return_unix (0, "ibv_get_async_event() failed");
284 switch (event.event_type)
286 case IBV_EVENT_PORT_ACTIVE:
287 rdma_update_state (vnm, rd, event.element.port_num);
289 case IBV_EVENT_PORT_ERR:
290 rdma_update_state (vnm, rd, event.element.port_num);
292 case IBV_EVENT_DEVICE_FATAL:
293 rd->flags &= ~RDMA_DEVICE_F_LINK_UP;
294 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
295 vlib_log_emerg (rm->log_class, "%s: fatal error", rd->name);
298 rdma_log__ (VLIB_LOG_LEVEL_ERR, rd, "unhandeld RDMA async event %i",
303 ibv_ack_async_event (&event);
307 static clib_error_t *
308 rdma_async_event_init (rdma_device_t * rd)
310 clib_file_t t = { 0 };
313 /* make RDMA async event fd non-blocking */
314 ret = fcntl (rd->ctx->async_fd, F_GETFL);
316 return clib_error_return_unix (0, "fcntl(F_GETFL) failed");
318 ret = fcntl (rd->ctx->async_fd, F_SETFL, ret | O_NONBLOCK);
320 return clib_error_return_unix (0, "fcntl(F_SETFL, O_NONBLOCK) failed");
322 /* register RDMA async event fd */
323 t.read_function = rdma_async_event_read_ready;
324 t.file_descriptor = rd->ctx->async_fd;
325 t.error_function = rdma_async_event_error_ready;
326 t.private_data = rd->dev_instance;
327 t.description = format (0, "%v async event", rd->name);
329 rd->async_event_clib_file_index = clib_file_add (&file_main, &t);
334 rdma_async_event_cleanup (rdma_device_t * rd)
336 clib_file_del_by_index (&file_main, rd->async_event_clib_file_index);
339 static clib_error_t *
340 rdma_register_interface (vnet_main_t * vnm, rdma_device_t * rd)
342 return ethernet_register_interface (vnm, rdma_device_class.index,
343 rd->dev_instance, rd->hwaddr.bytes,
344 &rd->hw_if_index, rdma_flag_change);
348 rdma_unregister_interface (vnet_main_t * vnm, rdma_device_t * rd)
350 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
351 vnet_hw_interface_unassign_rx_thread (vnm, rd->hw_if_index, 0);
352 ethernet_delete_interface (vnm, rd->hw_if_index);
356 rdma_dev_cleanup (rdma_device_t * rd)
358 rdma_main_t *rm = &rdma_main;
362 #define _(fn, arg) if (arg) \
365 if ((rv = fn (arg))) \
366 rdma_log (VLIB_LOG_LEVEL_DEBUG, rd, #fn "() failed (rv = %d)", rv); \
369 _(ibv_destroy_flow, rd->flow_mcast);
370 _(ibv_destroy_flow, rd->flow_ucast);
371 _(ibv_dereg_mr, rd->mr);
372 vec_foreach (txq, rd->txqs)
374 _(ibv_destroy_qp, txq->qp);
375 _(ibv_destroy_cq, txq->cq);
377 vec_foreach (rxq, rd->rxqs)
379 _(ibv_destroy_wq, rxq->wq);
380 _(ibv_destroy_cq, rxq->cq);
382 _(ibv_destroy_rwq_ind_table, rd->rx_rwq_ind_tbl);
383 _(ibv_destroy_qp, rd->rx_qp);
384 _(ibv_dealloc_pd, rd->pd);
385 _(ibv_close_device, rd->ctx);
388 clib_error_free (rd->error);
393 vlib_pci_free_device_info (rd->pci);
394 pool_put (rm->devices, rd);
397 static clib_error_t *
398 rdma_rxq_init (vlib_main_t * vm, rdma_device_t * rd, u16 qid, u32 n_desc)
401 struct ibv_wq_init_attr wqia;
402 struct ibv_wq_attr wqa;
404 vec_validate_aligned (rd->rxqs, qid, CLIB_CACHE_LINE_BYTES);
405 rxq = vec_elt_at_index (rd->rxqs, qid);
407 vec_validate_aligned (rxq->bufs, n_desc - 1, CLIB_CACHE_LINE_BYTES);
409 if ((rxq->cq = ibv_create_cq (rd->ctx, n_desc, NULL, NULL, 0)) == 0)
410 return clib_error_return_unix (0, "Create CQ Failed");
412 memset (&wqia, 0, sizeof (wqia));
413 wqia.wq_type = IBV_WQT_RQ;
414 wqia.max_wr = n_desc;
418 if ((rxq->wq = ibv_create_wq (rd->ctx, &wqia)) == 0)
419 return clib_error_return_unix (0, "Create WQ Failed");
421 memset (&wqa, 0, sizeof (wqa));
422 wqa.attr_mask = IBV_WQ_ATTR_STATE;
423 wqa.wq_state = IBV_WQS_RDY;
424 if (ibv_modify_wq (rxq->wq, &wqa) != 0)
425 return clib_error_return_unix (0, "Modify WQ (RDY) Failed");
430 static clib_error_t *
431 rdma_rxq_finalize (vlib_main_t * vm, rdma_device_t * rd)
433 struct ibv_rwq_ind_table_init_attr rwqia;
434 struct ibv_qp_init_attr_ex qpia;
435 struct ibv_wq **ind_tbl;
438 ASSERT (is_pow2 (vec_len (rd->rxqs))
439 && "rxq number should be a power of 2");
441 ind_tbl = vec_new (struct ibv_wq *, vec_len (rd->rxqs));
442 vec_foreach_index (i, rd->rxqs)
443 ind_tbl[i] = vec_elt_at_index (rd->rxqs, i)->wq;
444 memset (&rwqia, 0, sizeof (rwqia));
445 rwqia.log_ind_tbl_size = min_log2 (vec_len (ind_tbl));
446 rwqia.ind_tbl = ind_tbl;
447 if ((rd->rx_rwq_ind_tbl = ibv_create_rwq_ind_table (rd->ctx, &rwqia)) == 0)
448 return clib_error_return_unix (0, "RWQ indirection table create failed");
451 memset (&qpia, 0, sizeof (qpia));
452 qpia.qp_type = IBV_QPT_RAW_PACKET;
454 IBV_QP_INIT_ATTR_PD | IBV_QP_INIT_ATTR_IND_TABLE |
455 IBV_QP_INIT_ATTR_RX_HASH;
457 qpia.rwq_ind_tbl = rd->rx_rwq_ind_tbl;
458 STATIC_ASSERT_SIZEOF (rdma_rss_hash_key, 40);
459 qpia.rx_hash_conf.rx_hash_key_len = sizeof (rdma_rss_hash_key);
460 qpia.rx_hash_conf.rx_hash_key = rdma_rss_hash_key;
461 qpia.rx_hash_conf.rx_hash_function = IBV_RX_HASH_FUNC_TOEPLITZ;
462 qpia.rx_hash_conf.rx_hash_fields_mask =
463 IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4;
464 if ((rd->rx_qp = ibv_create_qp_ex (rd->ctx, &qpia)) == 0)
465 return clib_error_return_unix (0, "Queue Pair create failed");
467 if (rdma_dev_set_ucast (rd))
468 return clib_error_return_unix (0, "Set unicast mode failed");
473 static clib_error_t *
474 rdma_txq_init (vlib_main_t * vm, rdma_device_t * rd, u16 qid, u32 n_desc)
477 struct ibv_qp_init_attr qpia;
478 struct ibv_qp_attr qpa;
481 vec_validate_aligned (rd->txqs, qid, CLIB_CACHE_LINE_BYTES);
482 txq = vec_elt_at_index (rd->txqs, qid);
484 vec_validate_aligned (txq->bufs, n_desc - 1, CLIB_CACHE_LINE_BYTES);
486 if ((txq->cq = ibv_create_cq (rd->ctx, n_desc, NULL, NULL, 0)) == 0)
487 return clib_error_return_unix (0, "Create CQ Failed");
489 memset (&qpia, 0, sizeof (qpia));
490 qpia.send_cq = txq->cq;
491 qpia.recv_cq = txq->cq;
492 qpia.cap.max_send_wr = n_desc;
493 qpia.cap.max_send_sge = 1;
494 qpia.qp_type = IBV_QPT_RAW_PACKET;
496 if ((txq->qp = ibv_create_qp (rd->pd, &qpia)) == 0)
497 return clib_error_return_unix (0, "Queue Pair create failed");
499 memset (&qpa, 0, sizeof (qpa));
500 qp_flags = IBV_QP_STATE | IBV_QP_PORT;
501 qpa.qp_state = IBV_QPS_INIT;
503 if (ibv_modify_qp (txq->qp, &qpa, qp_flags) != 0)
504 return clib_error_return_unix (0, "Modify QP (init) Failed");
506 memset (&qpa, 0, sizeof (qpa));
507 qp_flags = IBV_QP_STATE;
508 qpa.qp_state = IBV_QPS_RTR;
509 if (ibv_modify_qp (txq->qp, &qpa, qp_flags) != 0)
510 return clib_error_return_unix (0, "Modify QP (receive) Failed");
512 memset (&qpa, 0, sizeof (qpa));
513 qp_flags = IBV_QP_STATE;
514 qpa.qp_state = IBV_QPS_RTS;
515 if (ibv_modify_qp (txq->qp, &qpa, qp_flags) != 0)
516 return clib_error_return_unix (0, "Modify QP (send) Failed");
520 static clib_error_t *
521 rdma_dev_init (vlib_main_t * vm, rdma_device_t * rd, u32 rxq_size,
522 u32 txq_size, u32 rxq_num)
525 vlib_buffer_main_t *bm = vm->buffer_main;
526 vlib_thread_main_t *tm = vlib_get_thread_main ();
530 return clib_error_return_unix (0, "Device Open Failed");
532 if ((rd->pd = ibv_alloc_pd (rd->ctx)) == 0)
533 return clib_error_return_unix (0, "PD Alloc Failed");
535 ethernet_mac_address_generate (rd->hwaddr.bytes);
538 * /!\ WARNING /!\ creation order is important
539 * We *must* create TX queues *before* RX queues, otherwise we will receive
540 * the broacast packets we sent
542 for (i = 0; i < tm->n_vlib_mains; i++)
543 if ((err = rdma_txq_init (vm, rd, i, txq_size)))
546 for (i = 0; i < rxq_num; i++)
547 if ((err = rdma_rxq_init (vm, rd, i, rxq_size)))
549 if ((err = rdma_rxq_finalize (vm, rd)))
552 if ((rd->mr = ibv_reg_mr (rd->pd, (void *) bm->buffer_mem_start,
554 IBV_ACCESS_LOCAL_WRITE)) == 0)
555 return clib_error_return_unix (0, "Register MR Failed");
556 rd->lkey = rd->mr->lkey; /* avoid indirection in datapath */
562 sysfs_path_to_pci_addr (char *path, vlib_pci_addr_t * addr)
568 s = clib_sysfs_link_to_name (path);
572 unformat_init_string (&in, (char *) s, strlen ((char *) s));
573 rv = unformat (&in, "%U", unformat_vlib_pci_addr, addr);
580 rdma_create_if (vlib_main_t * vm, rdma_create_if_args_t * args)
582 vnet_main_t *vnm = vnet_get_main ();
583 rdma_main_t *rm = &rdma_main;
585 vlib_pci_addr_t pci_addr;
586 struct ibv_device **dev_list;
592 args->rxq_size = args->rxq_size ? args->rxq_size : 2 * VLIB_FRAME_SIZE;
593 args->txq_size = args->txq_size ? args->txq_size : 2 * VLIB_FRAME_SIZE;
594 args->rxq_num = args->rxq_num ? args->rxq_num : 1;
596 if (!is_pow2 (args->rxq_num))
598 args->rv = VNET_API_ERROR_INVALID_VALUE;
600 clib_error_return (0, "rx queue number must be a power of two");
604 if (args->rxq_size < VLIB_FRAME_SIZE || args->txq_size < VLIB_FRAME_SIZE ||
605 !is_pow2 (args->rxq_size) || !is_pow2 (args->txq_size))
607 args->rv = VNET_API_ERROR_INVALID_VALUE;
609 clib_error_return (0, "queue size must be a power of two >= %i",
614 dev_list = ibv_get_device_list (&n_devs);
618 clib_error_return_unix (0,
619 "no RDMA devices available. Is the ib_uverbs module loaded?");
623 /* get PCI address */
624 s = format (0, "/sys/class/net/%s/device%c", args->ifname, 0);
625 if (sysfs_path_to_pci_addr ((char *) s, &pci_addr) == 0)
628 clib_error_return (0, "cannot find PCI address for device ");
632 pool_get_zero (rm->devices, rd);
633 rd->dev_instance = rd - rm->devices;
634 rd->per_interface_next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
635 rd->name = format (0, "%s", args->name);
636 rd->linux_ifname = format (0, "%s", args->ifname);
638 rd->pci = vlib_pci_get_device_info (vm, &pci_addr, &args->error);
642 /* if we failed to parse NUMA node, default to 0 */
643 if (-1 == rd->pci->numa_node)
644 rd->pci->numa_node = 0;
646 rd->pool = vlib_buffer_pool_get_default_for_numa (vm, rd->pci->numa_node);
648 if (strncmp ((char *) rd->pci->driver_name, "mlx5_core", 9))
651 clib_error_return (0,
652 "invalid interface (only mlx5 supported for now)");
656 for (i = 0; i < n_devs; i++)
658 vlib_pci_addr_t addr;
660 vec_reset_length (s);
661 s = format (s, "%s/device%c", dev_list[i]->dev_path, 0);
663 if (sysfs_path_to_pci_addr ((char *) s, &addr) == 0)
666 if (addr.as_u32 != rd->pci->addr.as_u32)
669 if ((rd->ctx = ibv_open_device (dev_list[i])))
674 rdma_dev_init (vm, rd, args->rxq_size, args->txq_size, args->rxq_num)))
677 if ((args->error = rdma_register_interface (vnm, rd)))
680 if ((args->error = rdma_async_event_init (rd)))
683 rdma_update_state (vnm, rd, 1);
685 vnet_sw_interface_t *sw = vnet_get_hw_sw_interface (vnm, rd->hw_if_index);
686 args->sw_if_index = rd->sw_if_index = sw->sw_if_index;
688 * FIXME: add support for interrupt mode
689 * vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, rd->hw_if_index);
690 * hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
692 vnet_hw_interface_set_input_node (vnm, rd->hw_if_index,
693 rdma_input_node.index);
694 vec_foreach_index (qid, rd->rxqs)
695 vnet_hw_interface_assign_rx_thread (vnm, rd->hw_if_index, qid, ~0);
701 rdma_unregister_interface (vnm, rd);
703 rdma_dev_cleanup (rd);
705 ibv_free_device_list (dev_list);
707 args->rv = VNET_API_ERROR_INVALID_INTERFACE;
709 vlib_log_err (rm->log_class, "%U", format_clib_error, args->error);
713 rdma_delete_if (vlib_main_t * vm, rdma_device_t * rd)
715 rdma_async_event_cleanup (rd);
716 rdma_unregister_interface (vnet_get_main (), rd);
717 rdma_dev_cleanup (rd);
720 static clib_error_t *
721 rdma_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
723 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
724 rdma_main_t *rm = &rdma_main;
725 rdma_device_t *rd = vec_elt_at_index (rm->devices, hi->dev_instance);
726 uword is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
728 if (rd->flags & RDMA_DEVICE_F_ERROR)
729 return clib_error_return (0, "device is in error state");
733 vnet_hw_interface_set_flags (vnm, rd->hw_if_index,
734 VNET_HW_INTERFACE_FLAG_LINK_UP);
735 rd->flags |= RDMA_DEVICE_F_ADMIN_UP;
739 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
740 rd->flags &= ~RDMA_DEVICE_F_ADMIN_UP;
746 rdma_set_interface_next_node (vnet_main_t * vnm, u32 hw_if_index,
749 rdma_main_t *rm = &rdma_main;
750 vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
751 rdma_device_t *rd = pool_elt_at_index (rm->devices, hw->dev_instance);
753 /* Shut off redirection */
754 if (node_index == ~0)
756 rd->per_interface_next_index = node_index;
760 rd->per_interface_next_index =
761 vlib_node_add_next (vlib_get_main (), rdma_input_node.index, node_index);
764 static char *rdma_tx_func_error_strings[] = {
766 foreach_rdma_tx_func_error
771 VNET_DEVICE_CLASS (rdma_device_class) =
773 .name = "RDMA interface",
774 .format_device = format_rdma_device,
775 .format_device_name = format_rdma_device_name,
776 .admin_up_down_function = rdma_interface_admin_up_down,
777 .rx_redirect_to_node = rdma_set_interface_next_node,
778 .tx_function_n_errors = RDMA_TX_N_ERROR,
779 .tx_function_error_strings = rdma_tx_func_error_strings,
780 .mac_addr_change_function = rdma_mac_change,
785 rdma_init (vlib_main_t * vm)
787 rdma_main_t *rm = &rdma_main;
789 rm->log_class = vlib_log_register_class ("rdma", 0);
795 VLIB_INIT_FUNCTION (rdma_init) =
797 .runs_after = VLIB_INITS ("pci_bus_init"),
802 * fd.io coding-style-patch-verification: ON
805 * eval: (c-set-style "gnu")