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;
157 rdma_dev_change_mtu (rdma_device_t * rd)
159 rdma_log__ (VLIB_LOG_LEVEL_ERR, rd, "MTU change not supported");
164 rdma_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw, u32 flags)
166 rdma_main_t *rm = &rdma_main;
167 rdma_device_t *rd = vec_elt_at_index (rm->devices, hw->dev_instance);
172 return rdma_dev_set_ucast (rd);
173 case ETHERNET_INTERFACE_FLAG_ACCEPT_ALL:
174 return rdma_dev_set_promisc (rd);
175 case ETHERNET_INTERFACE_FLAG_MTU:
176 return rdma_dev_change_mtu (rd);
179 rdma_log__ (VLIB_LOG_LEVEL_ERR, rd, "unknown flag %x requested", flags);
184 rdma_update_state (vnet_main_t * vnm, rdma_device_t * rd, int port)
186 struct ibv_port_attr attr;
190 if (ibv_query_port (rd->ctx, port, &attr))
192 vnet_hw_interface_set_link_speed (vnm, rd->hw_if_index, 0);
193 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
200 case IBV_PORT_ACTIVE: /* fallthrough */
201 case IBV_PORT_ACTIVE_DEFER:
202 rd->flags |= RDMA_DEVICE_F_LINK_UP;
203 vnet_hw_interface_set_flags (vnm, rd->hw_if_index,
204 VNET_HW_INTERFACE_FLAG_LINK_UP);
207 rd->flags &= ~RDMA_DEVICE_F_LINK_UP;
208 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
213 switch (attr.active_width)
228 switch (attr.active_speed)
236 case 4: /* fallthrough */
247 vnet_hw_interface_set_link_speed (vnm, rd->hw_if_index, width * speed);
250 static clib_error_t *
251 rdma_async_event_error_ready (clib_file_t * f)
253 rdma_main_t *rm = &rdma_main;
254 rdma_device_t *rd = vec_elt_at_index (rm->devices, f->private_data);
255 return clib_error_return (0, "RDMA async event error for device %U",
256 format_vlib_pci_addr, &rd->pci_addr);
259 static clib_error_t *
260 rdma_async_event_read_ready (clib_file_t * f)
262 vnet_main_t *vnm = vnet_get_main ();
263 rdma_main_t *rm = &rdma_main;
264 rdma_device_t *rd = vec_elt_at_index (rm->devices, f->private_data);
266 struct ibv_async_event event;
267 ret = ibv_get_async_event (rd->ctx, &event);
269 return clib_error_return_unix (0, "ibv_get_async_event() failed");
271 switch (event.event_type)
273 case IBV_EVENT_PORT_ACTIVE:
274 rdma_update_state (vnm, rd, event.element.port_num);
276 case IBV_EVENT_PORT_ERR:
277 rdma_update_state (vnm, rd, event.element.port_num);
279 case IBV_EVENT_DEVICE_FATAL:
280 rd->flags &= ~RDMA_DEVICE_F_LINK_UP;
281 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
282 vlib_log_emerg (rm->log_class, "Fatal RDMA error for device %U",
283 format_vlib_pci_addr, &rd->pci_addr);
286 rdma_log__ (VLIB_LOG_LEVEL_ERR, rd, "unhandeld RDMA async event %i",
291 ibv_ack_async_event (&event);
295 static clib_error_t *
296 rdma_async_event_init (rdma_device_t * rd)
298 clib_file_t t = { 0 };
301 /* make RDMA async event fd non-blocking */
302 ret = fcntl (rd->ctx->async_fd, F_GETFL);
304 return clib_error_return_unix (0, "fcntl(F_GETFL) failed");
306 ret = fcntl (rd->ctx->async_fd, F_SETFL, ret | O_NONBLOCK);
308 return clib_error_return_unix (0, "fcntl(F_SETFL, O_NONBLOCK) failed");
310 /* register RDMA async event fd */
311 t.read_function = rdma_async_event_read_ready;
312 t.file_descriptor = rd->ctx->async_fd;
313 t.error_function = rdma_async_event_error_ready;
314 t.private_data = rd->dev_instance;
316 format (0, "RMDA %U async event", format_vlib_pci_addr, &rd->pci_addr);
318 rd->async_event_clib_file_index = clib_file_add (&file_main, &t);
323 rdma_async_event_cleanup (rdma_device_t * rd)
325 clib_file_del_by_index (&file_main, rd->async_event_clib_file_index);
328 static clib_error_t *
329 rdma_register_interface (vnet_main_t * vnm, rdma_device_t * rd)
331 return ethernet_register_interface (vnm, rdma_device_class.index,
332 rd->dev_instance, rd->hwaddr.bytes,
333 &rd->hw_if_index, rdma_flag_change);
337 rdma_unregister_interface (vnet_main_t * vnm, rdma_device_t * rd)
339 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
340 vnet_hw_interface_unassign_rx_thread (vnm, rd->hw_if_index, 0);
341 ethernet_delete_interface (vnm, rd->hw_if_index);
345 rdma_dev_cleanup (rdma_device_t * rd)
347 rdma_main_t *rm = &rdma_main;
351 #define _(fn, arg) if (arg) \
354 if ((rv = fn (arg))) \
355 rdma_log (VLIB_LOG_LEVEL_DEBUG, rd, #fn "() failed (rv = %d)", rv); \
358 _(ibv_destroy_flow, rd->flow_mcast);
359 _(ibv_destroy_flow, rd->flow_ucast);
360 _(ibv_dereg_mr, rd->mr);
361 vec_foreach (txq, rd->txqs)
363 _(ibv_destroy_qp, txq->qp);
364 _(ibv_destroy_cq, txq->cq);
366 vec_foreach (rxq, rd->rxqs)
368 _(ibv_destroy_wq, rxq->wq);
369 _(ibv_destroy_cq, rxq->cq);
371 _(ibv_destroy_rwq_ind_table, rd->rx_rwq_ind_tbl);
372 _(ibv_destroy_qp, rd->rx_qp);
373 _(ibv_dealloc_pd, rd->pd);
374 _(ibv_close_device, rd->ctx);
377 clib_error_free (rd->error);
382 pool_put (rm->devices, rd);
385 static clib_error_t *
386 rdma_rxq_init (vlib_main_t * vm, rdma_device_t * rd, u16 qid, u32 n_desc)
389 struct ibv_wq_init_attr wqia;
390 struct ibv_wq_attr wqa;
392 vec_validate_aligned (rd->rxqs, qid, CLIB_CACHE_LINE_BYTES);
393 rxq = vec_elt_at_index (rd->rxqs, qid);
396 if ((rxq->cq = ibv_create_cq (rd->ctx, n_desc, NULL, NULL, 0)) == 0)
397 return clib_error_return_unix (0, "Create CQ Failed");
399 memset (&wqia, 0, sizeof (wqia));
400 wqia.wq_type = IBV_WQT_RQ;
401 wqia.max_wr = n_desc;
405 if ((rxq->wq = ibv_create_wq (rd->ctx, &wqia)) == 0)
406 return clib_error_return_unix (0, "Create WQ Failed");
408 memset (&wqa, 0, sizeof (wqa));
409 wqa.attr_mask = IBV_WQ_ATTR_STATE;
410 wqa.wq_state = IBV_WQS_RDY;
411 if (ibv_modify_wq (rxq->wq, &wqa) != 0)
412 return clib_error_return_unix (0, "Modify WQ (RDY) Failed");
417 static clib_error_t *
418 rdma_rxq_finalize (vlib_main_t * vm, rdma_device_t * rd)
420 struct ibv_rwq_ind_table_init_attr rwqia;
421 struct ibv_qp_init_attr_ex qpia;
422 struct ibv_wq **ind_tbl;
425 ASSERT (is_pow2 (vec_len (rd->rxqs))
426 && "rxq number should be a power of 2");
428 ind_tbl = vec_new (struct ibv_wq *, vec_len (rd->rxqs));
429 vec_foreach_index (i, rd->rxqs)
430 ind_tbl[i] = vec_elt_at_index (rd->rxqs, i)->wq;
431 memset (&rwqia, 0, sizeof (rwqia));
432 rwqia.log_ind_tbl_size = min_log2 (vec_len (ind_tbl));
433 rwqia.ind_tbl = ind_tbl;
434 if ((rd->rx_rwq_ind_tbl = ibv_create_rwq_ind_table (rd->ctx, &rwqia)) == 0)
435 return clib_error_return_unix (0, "RWQ indirection table create failed");
438 memset (&qpia, 0, sizeof (qpia));
439 qpia.qp_type = IBV_QPT_RAW_PACKET;
441 IBV_QP_INIT_ATTR_PD | IBV_QP_INIT_ATTR_IND_TABLE |
442 IBV_QP_INIT_ATTR_RX_HASH;
444 qpia.rwq_ind_tbl = rd->rx_rwq_ind_tbl;
445 STATIC_ASSERT_SIZEOF (rdma_rss_hash_key, 40);
446 qpia.rx_hash_conf.rx_hash_key_len = sizeof (rdma_rss_hash_key);
447 qpia.rx_hash_conf.rx_hash_key = rdma_rss_hash_key;
448 qpia.rx_hash_conf.rx_hash_function = IBV_RX_HASH_FUNC_TOEPLITZ;
449 qpia.rx_hash_conf.rx_hash_fields_mask =
450 IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4;
451 if ((rd->rx_qp = ibv_create_qp_ex (rd->ctx, &qpia)) == 0)
452 return clib_error_return_unix (0, "Queue Pair create failed");
454 if (rdma_dev_set_ucast (rd))
455 return clib_error_return_unix (0, "Set unicast mode failed");
460 static clib_error_t *
461 rdma_txq_init (vlib_main_t * vm, rdma_device_t * rd, u16 qid, u32 n_desc)
464 struct ibv_qp_init_attr qpia;
465 struct ibv_qp_attr qpa;
468 vec_validate_aligned (rd->txqs, qid, CLIB_CACHE_LINE_BYTES);
469 txq = vec_elt_at_index (rd->txqs, qid);
472 if ((txq->cq = ibv_create_cq (rd->ctx, n_desc, NULL, NULL, 0)) == 0)
473 return clib_error_return_unix (0, "Create CQ Failed");
475 memset (&qpia, 0, sizeof (qpia));
476 qpia.send_cq = txq->cq;
477 qpia.recv_cq = txq->cq;
478 qpia.cap.max_send_wr = n_desc;
479 qpia.cap.max_send_sge = 1;
480 qpia.qp_type = IBV_QPT_RAW_PACKET;
483 if ((txq->qp = ibv_create_qp (rd->pd, &qpia)) == 0)
484 return clib_error_return_unix (0, "Queue Pair create failed");
486 memset (&qpa, 0, sizeof (qpa));
487 qp_flags = IBV_QP_STATE | IBV_QP_PORT;
488 qpa.qp_state = IBV_QPS_INIT;
490 if (ibv_modify_qp (txq->qp, &qpa, qp_flags) != 0)
491 return clib_error_return_unix (0, "Modify QP (init) Failed");
493 memset (&qpa, 0, sizeof (qpa));
494 qp_flags = IBV_QP_STATE;
495 qpa.qp_state = IBV_QPS_RTR;
496 if (ibv_modify_qp (txq->qp, &qpa, qp_flags) != 0)
497 return clib_error_return_unix (0, "Modify QP (receive) Failed");
499 memset (&qpa, 0, sizeof (qpa));
500 qp_flags = IBV_QP_STATE;
501 qpa.qp_state = IBV_QPS_RTS;
502 if (ibv_modify_qp (txq->qp, &qpa, qp_flags) != 0)
503 return clib_error_return_unix (0, "Modify QP (send) Failed");
507 static clib_error_t *
508 rdma_dev_init (vlib_main_t * vm, rdma_device_t * rd, u32 rxq_size,
509 u32 txq_size, u32 rxq_num)
512 vlib_buffer_main_t *bm = vm->buffer_main;
513 vlib_thread_main_t *tm = vlib_get_thread_main ();
517 return clib_error_return_unix (0, "Device Open Failed");
519 if ((rd->pd = ibv_alloc_pd (rd->ctx)) == 0)
520 return clib_error_return_unix (0, "PD Alloc Failed");
522 ethernet_mac_address_generate (rd->hwaddr.bytes);
524 for (i = 0; i < rxq_num; i++)
525 if ((err = rdma_rxq_init (vm, rd, i, rxq_size)))
527 if ((err = rdma_rxq_finalize (vm, rd)))
530 for (i = 0; i < tm->n_vlib_mains; i++)
531 if ((err = rdma_txq_init (vm, rd, i, txq_size)))
534 if ((rd->mr = ibv_reg_mr (rd->pd, (void *) bm->buffer_mem_start,
536 IBV_ACCESS_LOCAL_WRITE)) == 0)
537 return clib_error_return_unix (0, "Register MR Failed");
543 sysfs_path_to_pci_addr (char *path, vlib_pci_addr_t * addr)
549 s = clib_sysfs_link_to_name (path);
550 unformat_init_string (&in, (char *) s, strlen ((char *) s));
551 rv = unformat (&in, "%U", unformat_vlib_pci_addr, addr);
558 rdma_create_if (vlib_main_t * vm, rdma_create_if_args_t * args)
560 vnet_main_t *vnm = vnet_get_main ();
561 rdma_main_t *rm = &rdma_main;
562 rdma_device_t *rd = 0;
563 struct ibv_device **dev_list = 0;
568 args->rxq_size = args->rxq_size ? args->rxq_size : 2 * VLIB_FRAME_SIZE;
569 args->txq_size = args->txq_size ? args->txq_size : 2 * VLIB_FRAME_SIZE;
570 args->rxq_num = args->rxq_num ? args->rxq_num : 1;
572 if (!is_pow2 (args->rxq_num))
574 args->rv = VNET_API_ERROR_INVALID_VALUE;
576 clib_error_return (0, "rx queue number must be a power of two");
580 if (!is_pow2 (args->rxq_size) || !is_pow2 (args->txq_size))
582 args->rv = VNET_API_ERROR_INVALID_VALUE;
584 clib_error_return (0, "queue size must be a power of two");
588 pool_get_zero (rm->devices, rd);
589 rd->dev_instance = rd - rm->devices;
590 rd->per_interface_next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
591 rd->name = vec_dup (args->name);
593 /* check if device exist and if it is bound to mlx5_core */
594 s = format (s, "/sys/class/net/%s/device/driver/module%c", args->ifname, 0);
595 s2 = clib_sysfs_link_to_name ((char *) s);
597 if (s2 == 0 || strncmp ((char *) s2, "mlx5_core", 9) != 0)
600 clib_error_return (0,
601 "invalid interface (only mlx5 supported for now)");
605 /* extract PCI address */
606 vec_reset_length (s);
607 s = format (s, "/sys/class/net/%s/device%c", args->ifname, 0);
608 if (sysfs_path_to_pci_addr ((char *) s, &rd->pci_addr) == 0)
610 args->error = clib_error_return (0, "cannot find PCI address");
614 dev_list = ibv_get_device_list (&n_devs);
618 clib_error_return_unix (0,
619 "no RDMA devices available, errno = %d. "
620 "Is the ib_uverbs module loaded?", errno);
624 for (int i = 0; i < n_devs; i++)
626 vlib_pci_addr_t addr;
628 vec_reset_length (s);
629 s = format (s, "%s/device%c", dev_list[i]->dev_path, 0);
631 if (sysfs_path_to_pci_addr ((char *) s, &addr) == 0)
634 if (addr.as_u32 != rd->pci_addr.as_u32)
637 if ((rd->ctx = ibv_open_device (dev_list[i])))
642 rdma_dev_init (vm, rd, args->rxq_size, args->txq_size, args->rxq_num)))
645 if ((args->error = rdma_register_interface (vnm, rd)))
648 if ((args->error = rdma_async_event_init (rd)))
651 rdma_update_state (vnm, rd, 1);
653 vnet_sw_interface_t *sw = vnet_get_hw_sw_interface (vnm, rd->hw_if_index);
654 args->sw_if_index = rd->sw_if_index = sw->sw_if_index;
656 * FIXME: add support for interrupt mode
657 * vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, rd->hw_if_index);
658 * hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
660 vnet_hw_interface_set_input_node (vnm, rd->hw_if_index,
661 rdma_input_node.index);
662 vec_foreach_index (qid, rd->rxqs)
663 vnet_hw_interface_assign_rx_thread (vnm, rd->hw_if_index, qid, ~0);
667 rdma_unregister_interface (vnm, rd);
669 rdma_dev_cleanup (rd);
671 ibv_free_device_list (dev_list);
675 args->rv = VNET_API_ERROR_INVALID_INTERFACE;
676 vlib_log_err (rm->log_class, "%U", format_clib_error, args->error);
680 rdma_delete_if (vlib_main_t * vm, rdma_device_t * rd)
682 rdma_async_event_cleanup (rd);
683 rdma_unregister_interface (vnet_get_main (), rd);
684 rdma_dev_cleanup (rd);
687 static clib_error_t *
688 rdma_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
690 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
691 rdma_main_t *rm = &rdma_main;
692 rdma_device_t *rd = vec_elt_at_index (rm->devices, hi->dev_instance);
693 uword is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
695 if (rd->flags & RDMA_DEVICE_F_ERROR)
696 return clib_error_return (0, "device is in error state");
700 vnet_hw_interface_set_flags (vnm, rd->hw_if_index,
701 VNET_HW_INTERFACE_FLAG_LINK_UP);
702 rd->flags |= RDMA_DEVICE_F_ADMIN_UP;
706 vnet_hw_interface_set_flags (vnm, rd->hw_if_index, 0);
707 rd->flags &= ~RDMA_DEVICE_F_ADMIN_UP;
713 rdma_set_interface_next_node (vnet_main_t * vnm, u32 hw_if_index,
716 rdma_main_t *rm = &rdma_main;
717 vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
718 rdma_device_t *rd = pool_elt_at_index (rm->devices, hw->dev_instance);
720 /* Shut off redirection */
721 if (node_index == ~0)
723 rd->per_interface_next_index = node_index;
727 rd->per_interface_next_index =
728 vlib_node_add_next (vlib_get_main (), rdma_input_node.index, node_index);
731 static char *rdma_tx_func_error_strings[] = {
733 foreach_rdma_tx_func_error
738 VNET_DEVICE_CLASS (rdma_device_class,) =
740 .name = "RDMA interface",
741 .format_device = format_rdma_device,
742 .format_device_name = format_rdma_device_name,
743 .admin_up_down_function = rdma_interface_admin_up_down,
744 .rx_redirect_to_node = rdma_set_interface_next_node,
745 .tx_function_n_errors = RDMA_TX_N_ERROR,
746 .tx_function_error_strings = rdma_tx_func_error_strings,
751 rdma_init (vlib_main_t * vm)
753 rdma_main_t *rm = &rdma_main;
755 rm->log_class = vlib_log_register_class ("rdma", 0);
760 VLIB_INIT_FUNCTION (rdma_init);
763 * fd.io coding-style-patch-verification: ON
766 * eval: (c-set-style "gnu")