1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2018 6WIND S.A.
3 * Copyright 2018 Mellanox Technologies, Ltd
7 #include <linux/if_link.h>
8 #include <linux/rtnetlink.h>
9 #include <linux/genetlink.h>
11 #include <rdma/rdma_netlink.h>
17 #include <sys/socket.h>
20 #include <rte_errno.h>
23 #include "mlx5_common_utils.h"
24 #include "mlx5_malloc.h"
26 #include <linux/devlink.h>
30 /* Size of the buffer to receive kernel messages */
31 #define MLX5_NL_BUF_SIZE (32 * 1024)
32 /* Send buffer size for the Netlink socket */
33 #define MLX5_SEND_BUF_SIZE 32768
34 /* Receive buffer size for the Netlink socket */
35 #define MLX5_RECV_BUF_SIZE 32768
37 /** Parameters of VLAN devices created by driver. */
38 #define MLX5_VMWA_VLAN_DEVICE_PFX "evmlx"
40 * Define NDA_RTA as defined in iproute2 sources.
42 * see in iproute2 sources file include/libnetlink.h
45 #define MLX5_NDA_RTA(r) \
46 ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
49 * Define NLMSG_TAIL as defined in iproute2 sources.
51 * see in iproute2 sources file include/libnetlink.h
54 #define NLMSG_TAIL(nmsg) \
55 ((struct rtattr *)(((char *)(nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
58 * The following definitions are normally found in rdma/rdma_netlink.h,
59 * however they are so recent that most systems do not expose them yet.
61 #ifndef HAVE_RDMA_NL_NLDEV
62 #define RDMA_NL_NLDEV 5
64 #ifndef HAVE_RDMA_NLDEV_CMD_GET
65 #define RDMA_NLDEV_CMD_GET 1
67 #ifndef HAVE_RDMA_NLDEV_CMD_PORT_GET
68 #define RDMA_NLDEV_CMD_PORT_GET 5
70 #ifndef HAVE_RDMA_NLDEV_ATTR_DEV_INDEX
71 #define RDMA_NLDEV_ATTR_DEV_INDEX 1
73 #ifndef HAVE_RDMA_NLDEV_ATTR_DEV_NAME
74 #define RDMA_NLDEV_ATTR_DEV_NAME 2
76 #ifndef HAVE_RDMA_NLDEV_ATTR_PORT_INDEX
77 #define RDMA_NLDEV_ATTR_PORT_INDEX 3
79 #ifndef HAVE_RDMA_NLDEV_ATTR_NDEV_INDEX
80 #define RDMA_NLDEV_ATTR_NDEV_INDEX 50
83 /* These are normally found in linux/if_link.h. */
84 #ifndef HAVE_IFLA_NUM_VF
85 #define IFLA_NUM_VF 21
87 #ifndef HAVE_IFLA_EXT_MASK
88 #define IFLA_EXT_MASK 29
90 #ifndef HAVE_IFLA_PHYS_SWITCH_ID
91 #define IFLA_PHYS_SWITCH_ID 36
93 #ifndef HAVE_IFLA_PHYS_PORT_NAME
94 #define IFLA_PHYS_PORT_NAME 38
98 * Some Devlink defines may be missed in old kernel versions,
99 * adjust used defines.
101 #ifndef DEVLINK_GENL_NAME
102 #define DEVLINK_GENL_NAME "devlink"
104 #ifndef DEVLINK_GENL_VERSION
105 #define DEVLINK_GENL_VERSION 1
107 #ifndef DEVLINK_ATTR_BUS_NAME
108 #define DEVLINK_ATTR_BUS_NAME 1
110 #ifndef DEVLINK_ATTR_DEV_NAME
111 #define DEVLINK_ATTR_DEV_NAME 2
113 #ifndef DEVLINK_ATTR_PARAM
114 #define DEVLINK_ATTR_PARAM 80
116 #ifndef DEVLINK_ATTR_PARAM_NAME
117 #define DEVLINK_ATTR_PARAM_NAME 81
119 #ifndef DEVLINK_ATTR_PARAM_TYPE
120 #define DEVLINK_ATTR_PARAM_TYPE 83
122 #ifndef DEVLINK_ATTR_PARAM_VALUES_LIST
123 #define DEVLINK_ATTR_PARAM_VALUES_LIST 84
125 #ifndef DEVLINK_ATTR_PARAM_VALUE
126 #define DEVLINK_ATTR_PARAM_VALUE 85
128 #ifndef DEVLINK_ATTR_PARAM_VALUE_DATA
129 #define DEVLINK_ATTR_PARAM_VALUE_DATA 86
131 #ifndef DEVLINK_ATTR_PARAM_VALUE_CMODE
132 #define DEVLINK_ATTR_PARAM_VALUE_CMODE 87
134 #ifndef DEVLINK_PARAM_CMODE_DRIVERINIT
135 #define DEVLINK_PARAM_CMODE_DRIVERINIT 1
137 #ifndef DEVLINK_CMD_RELOAD
138 #define DEVLINK_CMD_RELOAD 37
140 #ifndef DEVLINK_CMD_PARAM_GET
141 #define DEVLINK_CMD_PARAM_GET 38
143 #ifndef DEVLINK_CMD_PARAM_SET
144 #define DEVLINK_CMD_PARAM_SET 39
150 /* Add/remove MAC address through Netlink */
151 struct mlx5_nl_mac_addr {
152 struct rte_ether_addr (*mac)[];
153 /**< MAC address handled by the device. */
154 int mac_n; /**< Number of addresses in the array. */
157 #define MLX5_NL_CMD_GET_IB_NAME (1 << 0)
158 #define MLX5_NL_CMD_GET_IB_INDEX (1 << 1)
159 #define MLX5_NL_CMD_GET_NET_INDEX (1 << 2)
160 #define MLX5_NL_CMD_GET_PORT_INDEX (1 << 3)
162 /** Data structure used by mlx5_nl_cmdget_cb(). */
163 struct mlx5_nl_ifindex_data {
164 const char *name; /**< IB device name (in). */
165 uint32_t flags; /**< found attribute flags (out). */
166 uint32_t ibindex; /**< IB device index (out). */
167 uint32_t ifindex; /**< Network interface index (out). */
168 uint32_t portnum; /**< IB device max port number (out). */
173 /* Generate Netlink sequence number. */
174 #define MLX5_NL_SN_GENERATE __atomic_add_fetch(&atomic_sn, 1, __ATOMIC_RELAXED)
177 * Opens a Netlink socket.
180 * Netlink protocol (e.g. NETLINK_ROUTE, NETLINK_RDMA).
183 * A file descriptor on success, a negative errno value otherwise and
187 mlx5_nl_init(int protocol)
190 int sndbuf_size = MLX5_SEND_BUF_SIZE;
191 int rcvbuf_size = MLX5_RECV_BUF_SIZE;
192 struct sockaddr_nl local = {
193 .nl_family = AF_NETLINK,
197 fd = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, protocol);
202 ret = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sndbuf_size, sizeof(int));
207 ret = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf_size, sizeof(int));
212 ret = bind(fd, (struct sockaddr *)&local, sizeof(local));
224 * Send a request message to the kernel on the Netlink socket.
227 * Netlink socket file descriptor.
229 * The Netlink message send to the kernel.
233 * Pointer to the request structure.
235 * Length of the request in bytes.
238 * The number of sent bytes on success, a negative errno value otherwise and
242 mlx5_nl_request(int nlsk_fd, struct nlmsghdr *nh, uint32_t sn, void *req,
245 struct sockaddr_nl sa = {
246 .nl_family = AF_NETLINK,
248 struct iovec iov[2] = {
249 { .iov_base = nh, .iov_len = sizeof(*nh), },
250 { .iov_base = req, .iov_len = len, },
252 struct msghdr msg = {
254 .msg_namelen = sizeof(sa),
260 nh->nlmsg_pid = 0; /* communication with the kernel uses pid 0 */
262 send_bytes = sendmsg(nlsk_fd, &msg, 0);
263 if (send_bytes < 0) {
271 * Send a message to the kernel on the Netlink socket.
274 * The Netlink socket file descriptor used for communication.
276 * The Netlink message send to the kernel.
281 * The number of sent bytes on success, a negative errno value otherwise and
285 mlx5_nl_send(int nlsk_fd, struct nlmsghdr *nh, uint32_t sn)
287 struct sockaddr_nl sa = {
288 .nl_family = AF_NETLINK,
292 .iov_len = nh->nlmsg_len,
294 struct msghdr msg = {
296 .msg_namelen = sizeof(sa),
302 nh->nlmsg_pid = 0; /* communication with the kernel uses pid 0 */
304 send_bytes = sendmsg(nlsk_fd, &msg, 0);
305 if (send_bytes < 0) {
313 * Receive a message from the kernel on the Netlink socket, following
317 * The Netlink socket file descriptor used for communication.
321 * The callback function to call for each Netlink message received.
322 * @param[in, out] arg
323 * Custom arguments for the callback.
326 * 0 on success, a negative errno value otherwise and rte_errno is set.
329 mlx5_nl_recv(int nlsk_fd, uint32_t sn, int (*cb)(struct nlmsghdr *, void *arg),
332 struct sockaddr_nl sa;
333 void *buf = mlx5_malloc(0, MLX5_RECV_BUF_SIZE, 0, SOCKET_ID_ANY);
336 .iov_len = MLX5_RECV_BUF_SIZE,
338 struct msghdr msg = {
340 .msg_namelen = sizeof(sa),
342 /* One message at a time */
357 recv_bytes = recvmsg(nlsk_fd, &msg, 0);
358 if (recv_bytes == -1) {
363 nh = (struct nlmsghdr *)buf;
364 } while (nh->nlmsg_seq != sn);
366 NLMSG_OK(nh, (unsigned int)recv_bytes);
367 nh = NLMSG_NEXT(nh, recv_bytes)) {
368 if (nh->nlmsg_type == NLMSG_ERROR) {
369 struct nlmsgerr *err_data = NLMSG_DATA(nh);
371 if (err_data->error < 0) {
372 rte_errno = -err_data->error;
380 /* Multi-part msgs and their trailing DONE message. */
381 if (nh->nlmsg_flags & NLM_F_MULTI) {
382 if (nh->nlmsg_type == NLMSG_DONE) {
401 * Parse Netlink message to retrieve the bridge MAC address.
404 * Pointer to Netlink Message Header.
406 * PMD data register with this callback.
409 * 0 on success, a negative errno value otherwise and rte_errno is set.
412 mlx5_nl_mac_addr_cb(struct nlmsghdr *nh, void *arg)
414 struct mlx5_nl_mac_addr *data = arg;
415 struct ndmsg *r = NLMSG_DATA(nh);
416 struct rtattr *attribute;
419 len = nh->nlmsg_len - NLMSG_LENGTH(sizeof(*r));
420 for (attribute = MLX5_NDA_RTA(r);
421 RTA_OK(attribute, len);
422 attribute = RTA_NEXT(attribute, len)) {
423 if (attribute->rta_type == NDA_LLADDR) {
424 if (data->mac_n == MLX5_MAX_MAC_ADDRESSES) {
426 "not enough room to finalize the"
431 #ifdef RTE_LIBRTE_MLX5_DEBUG
432 char m[RTE_ETHER_ADDR_FMT_SIZE];
434 rte_ether_format_addr(m, RTE_ETHER_ADDR_FMT_SIZE,
435 RTA_DATA(attribute));
436 DRV_LOG(DEBUG, "bridge MAC address %s", m);
438 memcpy(&(*data->mac)[data->mac_n++],
439 RTA_DATA(attribute), RTE_ETHER_ADDR_LEN);
446 * Get bridge MAC addresses.
449 * Netlink socket file descriptor.
450 * @param[in] iface_idx
451 * Net device interface index.
453 * Pointer to the array table of MAC addresses to fill.
454 * Its size should be of MLX5_MAX_MAC_ADDRESSES.
456 * Number of entries filled in MAC array.
459 * 0 on success, a negative errno value otherwise and rte_errno is set.
462 mlx5_nl_mac_addr_list(int nlsk_fd, unsigned int iface_idx,
463 struct rte_ether_addr (*mac)[], int *mac_n)
467 struct ifinfomsg ifm;
470 .nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
471 .nlmsg_type = RTM_GETNEIGH,
472 .nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
475 .ifi_family = PF_BRIDGE,
476 .ifi_index = iface_idx,
479 struct mlx5_nl_mac_addr data = {
483 uint32_t sn = MLX5_NL_SN_GENERATE;
488 ret = mlx5_nl_request(nlsk_fd, &req.hdr, sn, &req.ifm,
489 sizeof(struct ifinfomsg));
492 ret = mlx5_nl_recv(nlsk_fd, sn, mlx5_nl_mac_addr_cb, &data);
498 DRV_LOG(DEBUG, "Interface %u cannot retrieve MAC address list %s",
499 iface_idx, strerror(rte_errno));
504 * Modify the MAC address neighbour table with Netlink.
507 * Netlink socket file descriptor.
508 * @param[in] iface_idx
509 * Net device interface index.
511 * MAC address to consider.
513 * 1 to add the MAC address, 0 to remove the MAC address.
516 * 0 on success, a negative errno value otherwise and rte_errno is set.
519 mlx5_nl_mac_addr_modify(int nlsk_fd, unsigned int iface_idx,
520 struct rte_ether_addr *mac, int add)
526 uint8_t buffer[RTE_ETHER_ADDR_LEN];
529 .nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
530 .nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE |
531 NLM_F_EXCL | NLM_F_ACK,
532 .nlmsg_type = add ? RTM_NEWNEIGH : RTM_DELNEIGH,
535 .ndm_family = PF_BRIDGE,
536 .ndm_state = NUD_NOARP | NUD_PERMANENT,
537 .ndm_ifindex = iface_idx,
538 .ndm_flags = NTF_SELF,
541 .rta_type = NDA_LLADDR,
542 .rta_len = RTA_LENGTH(RTE_ETHER_ADDR_LEN),
545 uint32_t sn = MLX5_NL_SN_GENERATE;
550 memcpy(RTA_DATA(&req.rta), mac, RTE_ETHER_ADDR_LEN);
551 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
552 RTA_ALIGN(req.rta.rta_len);
553 ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
556 ret = mlx5_nl_recv(nlsk_fd, sn, NULL, NULL);
561 #ifdef RTE_LIBRTE_MLX5_DEBUG
563 char m[RTE_ETHER_ADDR_FMT_SIZE];
565 rte_ether_format_addr(m, RTE_ETHER_ADDR_FMT_SIZE, mac);
567 "Interface %u cannot %s MAC address %s %s",
569 add ? "add" : "remove", m, strerror(rte_errno));
576 * Modify the VF MAC address neighbour table with Netlink.
579 * Netlink socket file descriptor.
580 * @param[in] iface_idx
581 * Net device interface index.
583 * MAC address to consider.
588 * 0 on success, a negative errno value otherwise and rte_errno is set.
591 mlx5_nl_vf_mac_addr_modify(int nlsk_fd, unsigned int iface_idx,
592 struct rte_ether_addr *mac, int vf_index)
597 struct ifinfomsg ifm;
598 struct rtattr vf_list_rta;
599 struct rtattr vf_info_rta;
600 struct rtattr vf_mac_rta;
601 struct ifla_vf_mac ivm;
604 .nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
605 .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
606 .nlmsg_type = RTM_BASE,
609 .ifi_index = iface_idx,
612 .rta_type = IFLA_VFINFO_LIST,
613 .rta_len = RTA_ALIGN(RTA_LENGTH(0)),
616 .rta_type = IFLA_VF_INFO,
617 .rta_len = RTA_ALIGN(RTA_LENGTH(0)),
620 .rta_type = IFLA_VF_MAC,
623 struct ifla_vf_mac ivm = {
626 uint32_t sn = MLX5_NL_SN_GENERATE;
628 memcpy(&ivm.mac, mac, RTE_ETHER_ADDR_LEN);
629 memcpy(RTA_DATA(&req.vf_mac_rta), &ivm, sizeof(ivm));
631 req.vf_mac_rta.rta_len = RTA_LENGTH(sizeof(ivm));
632 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
633 RTA_ALIGN(req.vf_list_rta.rta_len) +
634 RTA_ALIGN(req.vf_info_rta.rta_len) +
635 RTA_ALIGN(req.vf_mac_rta.rta_len);
636 req.vf_list_rta.rta_len = RTE_PTR_DIFF(NLMSG_TAIL(&req.hdr),
638 req.vf_info_rta.rta_len = RTE_PTR_DIFF(NLMSG_TAIL(&req.hdr),
643 ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
646 ret = mlx5_nl_recv(nlsk_fd, sn, NULL, NULL);
652 "representor %u cannot set VF MAC address "
653 "%02X:%02X:%02X:%02X:%02X:%02X : %s",
655 mac->addr_bytes[0], mac->addr_bytes[1],
656 mac->addr_bytes[2], mac->addr_bytes[3],
657 mac->addr_bytes[4], mac->addr_bytes[5],
658 strerror(rte_errno));
666 * Netlink socket file descriptor.
667 * @param[in] iface_idx
668 * Net device interface index.
670 * BITFIELD_DECLARE array to store the mac.
672 * MAC address to register.
677 * 0 on success, a negative errno value otherwise and rte_errno is set.
680 mlx5_nl_mac_addr_add(int nlsk_fd, unsigned int iface_idx,
681 uint64_t *mac_own, struct rte_ether_addr *mac,
686 ret = mlx5_nl_mac_addr_modify(nlsk_fd, iface_idx, mac, 1);
688 MLX5_ASSERT(index < MLX5_MAX_MAC_ADDRESSES);
689 if (index >= MLX5_MAX_MAC_ADDRESSES)
692 BITFIELD_SET(mac_own, index);
700 * Remove a MAC address.
703 * Netlink socket file descriptor.
704 * @param[in] iface_idx
705 * Net device interface index.
707 * BITFIELD_DECLARE array to store the mac.
709 * MAC address to remove.
714 * 0 on success, a negative errno value otherwise and rte_errno is set.
717 mlx5_nl_mac_addr_remove(int nlsk_fd, unsigned int iface_idx, uint64_t *mac_own,
718 struct rte_ether_addr *mac, uint32_t index)
720 MLX5_ASSERT(index < MLX5_MAX_MAC_ADDRESSES);
721 if (index >= MLX5_MAX_MAC_ADDRESSES)
724 BITFIELD_RESET(mac_own, index);
725 return mlx5_nl_mac_addr_modify(nlsk_fd, iface_idx, mac, 0);
729 * Synchronize Netlink bridge table to the internal table.
732 * Netlink socket file descriptor.
733 * @param[in] iface_idx
734 * Net device interface index.
736 * Mac addresses array to sync.
738 * @p mac_addrs array size.
741 mlx5_nl_mac_addr_sync(int nlsk_fd, unsigned int iface_idx,
742 struct rte_ether_addr *mac_addrs, int n)
744 struct rte_ether_addr macs[n];
749 ret = mlx5_nl_mac_addr_list(nlsk_fd, iface_idx, &macs, &macs_n);
752 for (i = 0; i != macs_n; ++i) {
755 /* Verify the address is not in the array yet. */
756 for (j = 0; j != n; ++j)
757 if (rte_is_same_ether_addr(&macs[i], &mac_addrs[j]))
761 /* Find the first entry available. */
762 for (j = 0; j != n; ++j) {
763 if (rte_is_zero_ether_addr(&mac_addrs[j])) {
764 mac_addrs[j] = macs[i];
772 * Flush all added MAC addresses.
775 * Netlink socket file descriptor.
776 * @param[in] iface_idx
777 * Net device interface index.
778 * @param[in] mac_addrs
779 * Mac addresses array to flush.
781 * @p mac_addrs array size.
783 * BITFIELD_DECLARE array to store the mac.
786 mlx5_nl_mac_addr_flush(int nlsk_fd, unsigned int iface_idx,
787 struct rte_ether_addr *mac_addrs, int n,
792 if (n <= 0 || n > MLX5_MAX_MAC_ADDRESSES)
795 for (i = n - 1; i >= 0; --i) {
796 struct rte_ether_addr *m = &mac_addrs[i];
798 if (BITFIELD_ISSET(mac_own, i))
799 mlx5_nl_mac_addr_remove(nlsk_fd, iface_idx, mac_own, m,
805 * Enable promiscuous / all multicast mode through Netlink.
808 * Netlink socket file descriptor.
809 * @param[in] iface_idx
810 * Net device interface index.
812 * IFF_PROMISC for promiscuous, IFF_ALLMULTI for allmulti.
814 * Nonzero to enable, disable otherwise.
817 * 0 on success, a negative errno value otherwise and rte_errno is set.
820 mlx5_nl_device_flags(int nlsk_fd, unsigned int iface_idx, uint32_t flags,
825 struct ifinfomsg ifi;
828 .nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
829 .nlmsg_type = RTM_NEWLINK,
830 .nlmsg_flags = NLM_F_REQUEST,
833 .ifi_flags = enable ? flags : 0,
835 .ifi_index = iface_idx,
838 uint32_t sn = MLX5_NL_SN_GENERATE;
841 MLX5_ASSERT(!(flags & ~(IFF_PROMISC | IFF_ALLMULTI)));
844 ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
851 * Enable promiscuous mode through Netlink.
854 * Netlink socket file descriptor.
855 * @param[in] iface_idx
856 * Net device interface index.
858 * Nonzero to enable, disable otherwise.
861 * 0 on success, a negative errno value otherwise and rte_errno is set.
864 mlx5_nl_promisc(int nlsk_fd, unsigned int iface_idx, int enable)
866 int ret = mlx5_nl_device_flags(nlsk_fd, iface_idx, IFF_PROMISC, enable);
870 "Interface %u cannot %s promisc mode: Netlink error %s",
871 iface_idx, enable ? "enable" : "disable",
872 strerror(rte_errno));
877 * Enable all multicast mode through Netlink.
880 * Netlink socket file descriptor.
881 * @param[in] iface_idx
882 * Net device interface index.
884 * Nonzero to enable, disable otherwise.
887 * 0 on success, a negative errno value otherwise and rte_errno is set.
890 mlx5_nl_allmulti(int nlsk_fd, unsigned int iface_idx, int enable)
892 int ret = mlx5_nl_device_flags(nlsk_fd, iface_idx, IFF_ALLMULTI,
897 "Interface %u cannot %s allmulti : Netlink error %s",
898 iface_idx, enable ? "enable" : "disable",
899 strerror(rte_errno));
904 * Process network interface information from Netlink message.
907 * Pointer to Netlink message header.
909 * Opaque data pointer for this callback.
912 * 0 on success, a negative errno value otherwise and rte_errno is set.
915 mlx5_nl_cmdget_cb(struct nlmsghdr *nh, void *arg)
917 struct mlx5_nl_ifindex_data *data = arg;
918 struct mlx5_nl_ifindex_data local = {
921 size_t off = NLMSG_HDRLEN;
923 if (nh->nlmsg_type !=
924 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET) &&
926 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_PORT_GET))
928 while (off < nh->nlmsg_len) {
929 struct nlattr *na = (void *)((uintptr_t)nh + off);
930 void *payload = (void *)((uintptr_t)na + NLA_HDRLEN);
932 if (na->nla_len > nh->nlmsg_len - off)
934 switch (na->nla_type) {
935 case RDMA_NLDEV_ATTR_DEV_INDEX:
936 local.ibindex = *(uint32_t *)payload;
937 local.flags |= MLX5_NL_CMD_GET_IB_INDEX;
939 case RDMA_NLDEV_ATTR_DEV_NAME:
940 if (!strcmp(payload, data->name))
941 local.flags |= MLX5_NL_CMD_GET_IB_NAME;
943 case RDMA_NLDEV_ATTR_NDEV_INDEX:
944 local.ifindex = *(uint32_t *)payload;
945 local.flags |= MLX5_NL_CMD_GET_NET_INDEX;
947 case RDMA_NLDEV_ATTR_PORT_INDEX:
948 local.portnum = *(uint32_t *)payload;
949 local.flags |= MLX5_NL_CMD_GET_PORT_INDEX;
954 off += NLA_ALIGN(na->nla_len);
957 * It is possible to have multiple messages for all
958 * Infiniband devices in the system with appropriate name.
959 * So we should gather parameters locally and copy to
960 * query context only in case of coinciding device name.
962 if (local.flags & MLX5_NL_CMD_GET_IB_NAME) {
963 data->flags = local.flags;
964 data->ibindex = local.ibindex;
965 data->ifindex = local.ifindex;
966 data->portnum = local.portnum;
975 * Get index of network interface associated with some IB device.
977 * This is the only somewhat safe method to avoid resorting to heuristics
978 * when faced with port representors. Unfortunately it requires at least
982 * Netlink socket of the RDMA kind (NETLINK_RDMA).
986 * IB device port index, starting from 1
988 * A valid (nonzero) interface index on success, 0 otherwise and rte_errno
992 mlx5_nl_ifindex(int nl, const char *name, uint32_t pindex)
994 struct mlx5_nl_ifindex_data data = {
997 .ibindex = 0, /* Determined during first pass. */
998 .ifindex = 0, /* Determined during second pass. */
1002 uint8_t buf[NLMSG_HDRLEN +
1003 NLA_HDRLEN + NLA_ALIGN(sizeof(data.ibindex)) +
1004 NLA_HDRLEN + NLA_ALIGN(sizeof(pindex))];
1007 .nlmsg_len = NLMSG_LENGTH(0),
1008 .nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1009 RDMA_NLDEV_CMD_GET),
1010 .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP,
1014 uint32_t sn = MLX5_NL_SN_GENERATE;
1017 ret = mlx5_nl_send(nl, &req.nh, sn);
1020 ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
1023 if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
1024 !(data.flags & MLX5_NL_CMD_GET_IB_INDEX))
1027 sn = MLX5_NL_SN_GENERATE;
1028 req.nh.nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1029 RDMA_NLDEV_CMD_PORT_GET);
1030 req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
1031 req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.buf) - NLMSG_HDRLEN);
1032 na = (void *)((uintptr_t)req.buf + NLMSG_HDRLEN);
1033 na->nla_len = NLA_HDRLEN + sizeof(data.ibindex);
1034 na->nla_type = RDMA_NLDEV_ATTR_DEV_INDEX;
1035 memcpy((void *)((uintptr_t)na + NLA_HDRLEN),
1036 &data.ibindex, sizeof(data.ibindex));
1037 na = (void *)((uintptr_t)na + NLA_ALIGN(na->nla_len));
1038 na->nla_len = NLA_HDRLEN + sizeof(pindex);
1039 na->nla_type = RDMA_NLDEV_ATTR_PORT_INDEX;
1040 memcpy((void *)((uintptr_t)na + NLA_HDRLEN),
1041 &pindex, sizeof(pindex));
1042 ret = mlx5_nl_send(nl, &req.nh, sn);
1045 ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
1048 if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
1049 !(data.flags & MLX5_NL_CMD_GET_IB_INDEX) ||
1050 !(data.flags & MLX5_NL_CMD_GET_NET_INDEX) ||
1053 return data.ifindex;
1060 * Get the number of physical ports of given IB device.
1063 * Netlink socket of the RDMA kind (NETLINK_RDMA).
1068 * A valid (nonzero) number of ports on success, 0 otherwise
1069 * and rte_errno is set.
1072 mlx5_nl_portnum(int nl, const char *name)
1074 struct mlx5_nl_ifindex_data data = {
1080 struct nlmsghdr req = {
1081 .nlmsg_len = NLMSG_LENGTH(0),
1082 .nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
1083 RDMA_NLDEV_CMD_GET),
1084 .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP,
1086 uint32_t sn = MLX5_NL_SN_GENERATE;
1089 ret = mlx5_nl_send(nl, &req, sn);
1092 ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
1095 if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
1096 !(data.flags & MLX5_NL_CMD_GET_IB_INDEX) ||
1097 !(data.flags & MLX5_NL_CMD_GET_PORT_INDEX)) {
1103 return data.portnum;
1107 * Analyze gathered port parameters via Netlink to recognize master
1108 * and representor devices for E-Switch configuration.
1110 * @param[in] num_vf_set
1111 * flag of presence of number of VFs port attribute.
1112 * @param[inout] switch_info
1113 * Port information, including port name as a number and port name
1114 * type if recognized
1117 * master and representor flags are set in switch_info according to
1118 * recognized parameters (if any).
1121 mlx5_nl_check_switch_info(bool num_vf_set,
1122 struct mlx5_switch_info *switch_info)
1124 switch (switch_info->name_type) {
1125 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1127 * Name is not recognized, assume the master,
1128 * check the number of VFs key presence.
1130 switch_info->master = num_vf_set;
1132 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1134 * Name is not set, this assumes the legacy naming
1135 * schema for master, just check if there is a
1136 * number of VFs key.
1138 switch_info->master = num_vf_set;
1140 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1141 /* New uplink naming schema recognized. */
1142 switch_info->master = 1;
1144 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1145 /* Legacy representors naming schema. */
1146 switch_info->representor = !num_vf_set;
1148 case MLX5_PHYS_PORT_NAME_TYPE_PFHPF:
1150 case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1151 /* New representors naming schema. */
1152 switch_info->representor = 1;
1158 * Process switch information from Netlink message.
1161 * Pointer to Netlink message header.
1163 * Opaque data pointer for this callback.
1166 * 0 on success, a negative errno value otherwise and rte_errno is set.
1169 mlx5_nl_switch_info_cb(struct nlmsghdr *nh, void *arg)
1171 struct mlx5_switch_info info = {
1174 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1178 size_t off = NLMSG_LENGTH(sizeof(struct ifinfomsg));
1179 bool switch_id_set = false;
1180 bool num_vf_set = false;
1182 if (nh->nlmsg_type != RTM_NEWLINK)
1184 while (off < nh->nlmsg_len) {
1185 struct rtattr *ra = (void *)((uintptr_t)nh + off);
1186 void *payload = RTA_DATA(ra);
1189 if (ra->rta_len > nh->nlmsg_len - off)
1191 switch (ra->rta_type) {
1195 case IFLA_PHYS_PORT_NAME:
1196 mlx5_translate_port_name((char *)payload, &info);
1198 case IFLA_PHYS_SWITCH_ID:
1200 for (i = 0; i < RTA_PAYLOAD(ra); ++i) {
1201 info.switch_id <<= 8;
1202 info.switch_id |= ((uint8_t *)payload)[i];
1204 switch_id_set = true;
1207 off += RTA_ALIGN(ra->rta_len);
1209 if (switch_id_set) {
1210 /* We have some E-Switch configuration. */
1211 mlx5_nl_check_switch_info(num_vf_set, &info);
1213 MLX5_ASSERT(!(info.master && info.representor));
1214 memcpy(arg, &info, sizeof(info));
1222 * Get switch information associated with network interface.
1225 * Netlink socket of the ROUTE kind (NETLINK_ROUTE).
1227 * Network interface index.
1229 * Switch information object, populated in case of success.
1232 * 0 on success, a negative errno value otherwise and rte_errno is set.
1235 mlx5_nl_switch_info(int nl, unsigned int ifindex,
1236 struct mlx5_switch_info *info)
1240 struct ifinfomsg info;
1245 .nlmsg_len = NLMSG_LENGTH
1247 RTA_LENGTH(sizeof(uint32_t))),
1248 .nlmsg_type = RTM_GETLINK,
1249 .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
1252 .ifi_family = AF_UNSPEC,
1253 .ifi_index = ifindex,
1256 .rta_type = IFLA_EXT_MASK,
1257 .rta_len = RTA_LENGTH(sizeof(int32_t)),
1259 .extmask = RTE_LE32(1),
1261 uint32_t sn = MLX5_NL_SN_GENERATE;
1264 ret = mlx5_nl_send(nl, &req.nh, sn);
1266 ret = mlx5_nl_recv(nl, sn, mlx5_nl_switch_info_cb, info);
1267 if (info->master && info->representor) {
1268 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1269 " and as representor", ifindex);
1277 * Delete VLAN network device by ifindex.
1280 * Context object initialized by mlx5_nl_vlan_vmwa_init().
1281 * @param[in] ifindex
1282 * Interface index of network device to delete.
1285 mlx5_nl_vlan_vmwa_delete(struct mlx5_nl_vlan_vmwa_context *vmwa,
1288 uint32_t sn = MLX5_NL_SN_GENERATE;
1292 struct ifinfomsg info;
1295 .nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
1296 .nlmsg_type = RTM_DELLINK,
1297 .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
1300 .ifi_family = AF_UNSPEC,
1301 .ifi_index = ifindex,
1306 ret = mlx5_nl_send(vmwa->nl_socket, &req.nh, sn);
1308 ret = mlx5_nl_recv(vmwa->nl_socket, sn, NULL, NULL);
1310 DRV_LOG(WARNING, "netlink: error deleting VLAN WA"
1311 " ifindex %u, %d", ifindex, ret);
1315 /* Set of subroutines to build Netlink message. */
1316 static struct nlattr *
1317 nl_msg_tail(struct nlmsghdr *nlh)
1319 return (struct nlattr *)
1320 (((uint8_t *)nlh) + NLMSG_ALIGN(nlh->nlmsg_len));
1324 nl_attr_put(struct nlmsghdr *nlh, int type, const void *data, int alen)
1326 struct nlattr *nla = nl_msg_tail(nlh);
1328 nla->nla_type = type;
1329 nla->nla_len = NLMSG_ALIGN(sizeof(struct nlattr)) + alen;
1330 nlh->nlmsg_len += NLMSG_ALIGN(nla->nla_len);
1333 memcpy((uint8_t *)nla + sizeof(struct nlattr), data, alen);
1336 static struct nlattr *
1337 nl_attr_nest_start(struct nlmsghdr *nlh, int type)
1339 struct nlattr *nest = (struct nlattr *)nl_msg_tail(nlh);
1341 nl_attr_put(nlh, type, NULL, 0);
1346 nl_attr_nest_end(struct nlmsghdr *nlh, struct nlattr *nest)
1348 nest->nla_len = (uint8_t *)nl_msg_tail(nlh) - (uint8_t *)nest;
1352 * Create network VLAN device with specified VLAN tag.
1355 * Context object initialized by mlx5_nl_vlan_vmwa_init().
1356 * @param[in] ifindex
1357 * Base network interface index.
1359 * VLAN tag for VLAN network device to create.
1362 mlx5_nl_vlan_vmwa_create(struct mlx5_nl_vlan_vmwa_context *vmwa,
1363 uint32_t ifindex, uint16_t tag)
1365 struct nlmsghdr *nlh;
1366 struct ifinfomsg *ifm;
1367 char name[sizeof(MLX5_VMWA_VLAN_DEVICE_PFX) + 32];
1370 uint8_t buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
1371 NLMSG_ALIGN(sizeof(struct ifinfomsg)) +
1372 NLMSG_ALIGN(sizeof(struct nlattr)) * 8 +
1373 NLMSG_ALIGN(sizeof(uint32_t)) +
1374 NLMSG_ALIGN(sizeof(name)) +
1375 NLMSG_ALIGN(sizeof("vlan")) +
1376 NLMSG_ALIGN(sizeof(uint32_t)) +
1377 NLMSG_ALIGN(sizeof(uint16_t)) + 16];
1378 struct nlattr *na_info;
1379 struct nlattr *na_vlan;
1380 uint32_t sn = MLX5_NL_SN_GENERATE;
1383 memset(buf, 0, sizeof(buf));
1384 nlh = (struct nlmsghdr *)buf;
1385 nlh->nlmsg_len = sizeof(struct nlmsghdr);
1386 nlh->nlmsg_type = RTM_NEWLINK;
1387 nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE |
1388 NLM_F_EXCL | NLM_F_ACK;
1389 ifm = (struct ifinfomsg *)nl_msg_tail(nlh);
1390 nlh->nlmsg_len += sizeof(struct ifinfomsg);
1391 ifm->ifi_family = AF_UNSPEC;
1394 ifm->ifi_flags = IFF_UP;
1395 ifm->ifi_change = 0xffffffff;
1396 nl_attr_put(nlh, IFLA_LINK, &ifindex, sizeof(ifindex));
1397 ret = snprintf(name, sizeof(name), "%s.%u.%u",
1398 MLX5_VMWA_VLAN_DEVICE_PFX, ifindex, tag);
1399 nl_attr_put(nlh, IFLA_IFNAME, name, ret + 1);
1400 na_info = nl_attr_nest_start(nlh, IFLA_LINKINFO);
1401 nl_attr_put(nlh, IFLA_INFO_KIND, "vlan", sizeof("vlan"));
1402 na_vlan = nl_attr_nest_start(nlh, IFLA_INFO_DATA);
1403 nl_attr_put(nlh, IFLA_VLAN_ID, &tag, sizeof(tag));
1404 nl_attr_nest_end(nlh, na_vlan);
1405 nl_attr_nest_end(nlh, na_info);
1406 MLX5_ASSERT(sizeof(buf) >= nlh->nlmsg_len);
1407 ret = mlx5_nl_send(vmwa->nl_socket, nlh, sn);
1409 ret = mlx5_nl_recv(vmwa->nl_socket, sn, NULL, NULL);
1411 DRV_LOG(WARNING, "netlink: VLAN %s create failure (%d)", name,
1414 /* Try to get ifindex of created or pre-existing device. */
1415 ret = if_nametoindex(name);
1417 DRV_LOG(WARNING, "VLAN %s failed to get index (%d)", name,
1425 * Parse Netlink message to retrieve the general family ID.
1428 * Pointer to Netlink Message Header.
1430 * PMD data register with this callback.
1433 * 0 on success, a negative errno value otherwise and rte_errno is set.
1436 mlx5_nl_family_id_cb(struct nlmsghdr *nh, void *arg)
1439 struct nlattr *tail = RTE_PTR_ADD(nh, nh->nlmsg_len);
1440 struct nlattr *nla = RTE_PTR_ADD(nh, NLMSG_ALIGN(sizeof(*nh)) +
1441 NLMSG_ALIGN(sizeof(struct genlmsghdr)));
1443 for (; nla->nla_len && nla < tail;
1444 nla = RTE_PTR_ADD(nla, NLMSG_ALIGN(nla->nla_len))) {
1445 if (nla->nla_type == CTRL_ATTR_FAMILY_ID) {
1446 *(uint16_t *)arg = *(uint16_t *)(nla + 1);
1453 #define MLX5_NL_MAX_ATTR_SIZE 100
1455 * Get generic netlink family ID.
1457 * @param[in] nlsk_fd
1458 * Netlink socket file descriptor.
1463 * ID >= 0 on success and @p enable is updated, a negative errno value
1464 * otherwise and rte_errno is set.
1467 mlx5_nl_generic_family_id_get(int nlsk_fd, const char *name)
1469 struct nlmsghdr *nlh;
1470 struct genlmsghdr *genl;
1471 uint32_t sn = MLX5_NL_SN_GENERATE;
1472 int name_size = strlen(name) + 1;
1475 uint8_t buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
1476 NLMSG_ALIGN(sizeof(struct genlmsghdr)) +
1477 NLMSG_ALIGN(sizeof(struct nlattr)) +
1478 NLMSG_ALIGN(MLX5_NL_MAX_ATTR_SIZE)];
1480 memset(buf, 0, sizeof(buf));
1481 nlh = (struct nlmsghdr *)buf;
1482 nlh->nlmsg_len = sizeof(struct nlmsghdr);
1483 nlh->nlmsg_type = GENL_ID_CTRL;
1484 nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
1485 genl = (struct genlmsghdr *)nl_msg_tail(nlh);
1486 nlh->nlmsg_len += sizeof(struct genlmsghdr);
1487 genl->cmd = CTRL_CMD_GETFAMILY;
1489 nl_attr_put(nlh, CTRL_ATTR_FAMILY_NAME, name, name_size);
1490 ret = mlx5_nl_send(nlsk_fd, nlh, sn);
1492 ret = mlx5_nl_recv(nlsk_fd, sn, mlx5_nl_family_id_cb, &id);
1494 DRV_LOG(DEBUG, "Failed to get Netlink %s family ID: %d.", name,
1498 DRV_LOG(DEBUG, "Netlink \"%s\" family ID is %u.", name, id);
1503 * Get Devlink family ID.
1505 * @param[in] nlsk_fd
1506 * Netlink socket file descriptor.
1509 * ID >= 0 on success and @p enable is updated, a negative errno value
1510 * otherwise and rte_errno is set.
1514 mlx5_nl_devlink_family_id_get(int nlsk_fd)
1516 return mlx5_nl_generic_family_id_get(nlsk_fd, DEVLINK_GENL_NAME);
1520 * Parse Netlink message to retrieve the ROCE enable status.
1523 * Pointer to Netlink Message Header.
1525 * PMD data register with this callback.
1528 * 0 on success, a negative errno value otherwise and rte_errno is set.
1531 mlx5_nl_roce_cb(struct nlmsghdr *nh, void *arg)
1536 struct nlattr *tail = RTE_PTR_ADD(nh, nh->nlmsg_len);
1537 struct nlattr *nla = RTE_PTR_ADD(nh, NLMSG_ALIGN(sizeof(*nh)) +
1538 NLMSG_ALIGN(sizeof(struct genlmsghdr)));
1540 while (nla->nla_len && nla < tail) {
1541 switch (nla->nla_type) {
1542 /* Expected nested attributes case. */
1543 case DEVLINK_ATTR_PARAM:
1544 case DEVLINK_ATTR_PARAM_VALUES_LIST:
1545 case DEVLINK_ATTR_PARAM_VALUE:
1549 case DEVLINK_ATTR_PARAM_VALUE_DATA:
1553 nla = RTE_PTR_ADD(nla, NLMSG_ALIGN(nla->nla_len));
1561 * Get ROCE enable status through Netlink.
1563 * @param[in] nlsk_fd
1564 * Netlink socket file descriptor.
1565 * @param[in] family_id
1566 * the Devlink family ID.
1568 * The device PCI address.
1569 * @param[out] enable
1570 * Where to store the enable status.
1573 * 0 on success and @p enable is updated, a negative errno value otherwise
1574 * and rte_errno is set.
1577 mlx5_nl_enable_roce_get(int nlsk_fd, int family_id, const char *pci_addr,
1580 struct nlmsghdr *nlh;
1581 struct genlmsghdr *genl;
1582 uint32_t sn = MLX5_NL_SN_GENERATE;
1585 uint8_t buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
1586 NLMSG_ALIGN(sizeof(struct genlmsghdr)) +
1587 NLMSG_ALIGN(sizeof(struct nlattr)) * 4 +
1588 NLMSG_ALIGN(MLX5_NL_MAX_ATTR_SIZE) * 4];
1590 memset(buf, 0, sizeof(buf));
1591 nlh = (struct nlmsghdr *)buf;
1592 nlh->nlmsg_len = sizeof(struct nlmsghdr);
1593 nlh->nlmsg_type = family_id;
1594 nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
1595 genl = (struct genlmsghdr *)nl_msg_tail(nlh);
1596 nlh->nlmsg_len += sizeof(struct genlmsghdr);
1597 genl->cmd = DEVLINK_CMD_PARAM_GET;
1598 genl->version = DEVLINK_GENL_VERSION;
1599 nl_attr_put(nlh, DEVLINK_ATTR_BUS_NAME, "pci", 4);
1600 nl_attr_put(nlh, DEVLINK_ATTR_DEV_NAME, pci_addr, strlen(pci_addr) + 1);
1601 nl_attr_put(nlh, DEVLINK_ATTR_PARAM_NAME, "enable_roce", 12);
1602 ret = mlx5_nl_send(nlsk_fd, nlh, sn);
1604 ret = mlx5_nl_recv(nlsk_fd, sn, mlx5_nl_roce_cb, &cur_en);
1606 DRV_LOG(DEBUG, "Failed to get ROCE enable on device %s: %d.",
1611 DRV_LOG(DEBUG, "ROCE is %sabled for device \"%s\".",
1612 cur_en ? "en" : "dis", pci_addr);
1617 * Reload mlx5 device kernel driver through Netlink.
1619 * @param[in] nlsk_fd
1620 * Netlink socket file descriptor.
1621 * @param[in] family_id
1622 * the Devlink family ID.
1624 * The device PCI address.
1625 * @param[out] enable
1626 * The enable status to set.
1629 * 0 on success, a negative errno value otherwise and rte_errno is set.
1632 mlx5_nl_driver_reload(int nlsk_fd, int family_id, const char *pci_addr)
1634 struct nlmsghdr *nlh;
1635 struct genlmsghdr *genl;
1636 uint32_t sn = MLX5_NL_SN_GENERATE;
1638 uint8_t buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
1639 NLMSG_ALIGN(sizeof(struct genlmsghdr)) +
1640 NLMSG_ALIGN(sizeof(struct nlattr)) * 2 +
1641 NLMSG_ALIGN(MLX5_NL_MAX_ATTR_SIZE) * 2];
1643 memset(buf, 0, sizeof(buf));
1644 nlh = (struct nlmsghdr *)buf;
1645 nlh->nlmsg_len = sizeof(struct nlmsghdr);
1646 nlh->nlmsg_type = family_id;
1647 nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
1648 genl = (struct genlmsghdr *)nl_msg_tail(nlh);
1649 nlh->nlmsg_len += sizeof(struct genlmsghdr);
1650 genl->cmd = DEVLINK_CMD_RELOAD;
1651 genl->version = DEVLINK_GENL_VERSION;
1652 nl_attr_put(nlh, DEVLINK_ATTR_BUS_NAME, "pci", 4);
1653 nl_attr_put(nlh, DEVLINK_ATTR_DEV_NAME, pci_addr, strlen(pci_addr) + 1);
1654 ret = mlx5_nl_send(nlsk_fd, nlh, sn);
1656 ret = mlx5_nl_recv(nlsk_fd, sn, NULL, NULL);
1658 DRV_LOG(DEBUG, "Failed to reload %s device by Netlink - %d",
1662 DRV_LOG(DEBUG, "Device \"%s\" was reloaded by Netlink successfully.",
1668 * Set ROCE enable status through Netlink.
1670 * @param[in] nlsk_fd
1671 * Netlink socket file descriptor.
1672 * @param[in] family_id
1673 * the Devlink family ID.
1675 * The device PCI address.
1676 * @param[out] enable
1677 * The enable status to set.
1680 * 0 on success, a negative errno value otherwise and rte_errno is set.
1683 mlx5_nl_enable_roce_set(int nlsk_fd, int family_id, const char *pci_addr,
1686 struct nlmsghdr *nlh;
1687 struct genlmsghdr *genl;
1688 uint32_t sn = MLX5_NL_SN_GENERATE;
1690 uint8_t buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
1691 NLMSG_ALIGN(sizeof(struct genlmsghdr)) +
1692 NLMSG_ALIGN(sizeof(struct nlattr)) * 6 +
1693 NLMSG_ALIGN(MLX5_NL_MAX_ATTR_SIZE) * 6];
1694 uint8_t cmode = DEVLINK_PARAM_CMODE_DRIVERINIT;
1695 uint8_t ptype = NLA_FLAG;
1698 memset(buf, 0, sizeof(buf));
1699 nlh = (struct nlmsghdr *)buf;
1700 nlh->nlmsg_len = sizeof(struct nlmsghdr);
1701 nlh->nlmsg_type = family_id;
1702 nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
1703 genl = (struct genlmsghdr *)nl_msg_tail(nlh);
1704 nlh->nlmsg_len += sizeof(struct genlmsghdr);
1705 genl->cmd = DEVLINK_CMD_PARAM_SET;
1706 genl->version = DEVLINK_GENL_VERSION;
1707 nl_attr_put(nlh, DEVLINK_ATTR_BUS_NAME, "pci", 4);
1708 nl_attr_put(nlh, DEVLINK_ATTR_DEV_NAME, pci_addr, strlen(pci_addr) + 1);
1709 nl_attr_put(nlh, DEVLINK_ATTR_PARAM_NAME, "enable_roce", 12);
1710 nl_attr_put(nlh, DEVLINK_ATTR_PARAM_VALUE_CMODE, &cmode, sizeof(cmode));
1711 nl_attr_put(nlh, DEVLINK_ATTR_PARAM_TYPE, &ptype, sizeof(ptype));
1713 nl_attr_put(nlh, DEVLINK_ATTR_PARAM_VALUE_DATA, NULL, 0);
1714 ret = mlx5_nl_send(nlsk_fd, nlh, sn);
1716 ret = mlx5_nl_recv(nlsk_fd, sn, NULL, NULL);
1718 DRV_LOG(DEBUG, "Failed to %sable ROCE for device %s by Netlink:"
1719 " %d.", enable ? "en" : "dis", pci_addr, ret);
1722 DRV_LOG(DEBUG, "Device %s ROCE was %sabled by Netlink successfully.",
1723 pci_addr, enable ? "en" : "dis");
1724 /* Now, need to reload the driver. */
1725 return mlx5_nl_driver_reload(nlsk_fd, family_id, pci_addr);