1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2019 6WIND S.A.
3 * Copyright 2019 Mellanox Technologies, Ltd
10 #include <rte_ethdev_driver.h>
11 #include <rte_string_fns.h>
14 #include "mlx4_rxtx.h"
15 #include "mlx4_utils.h"
18 * Initialize IPC message.
21 * Pointer to Ethernet structure.
23 * Pointer to message to fill in.
28 mp_init_msg(struct rte_eth_dev *dev, struct rte_mp_msg *msg,
29 enum mlx4_mp_req_type type)
31 struct mlx4_mp_param *param = (struct mlx4_mp_param *)msg->param;
33 memset(msg, 0, sizeof(*msg));
34 strlcpy(msg->name, MLX4_MP_NAME, sizeof(msg->name));
35 msg->len_param = sizeof(*param);
37 param->port_id = dev->data->port_id;
41 * IPC message handler of primary process.
44 * Pointer to Ethernet structure.
46 * Pointer to the peer socket path.
49 * 0 on success, negative errno value otherwise and rte_errno is set.
52 mp_primary_handle(const struct rte_mp_msg *mp_msg, const void *peer)
54 struct rte_mp_msg mp_res;
55 struct mlx4_mp_param *res = (struct mlx4_mp_param *)mp_res.param;
56 const struct mlx4_mp_param *param =
57 (const struct mlx4_mp_param *)mp_msg->param;
58 struct rte_eth_dev *dev;
59 struct mlx4_priv *priv;
60 struct mlx4_mr_cache entry;
64 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
65 if (!rte_eth_dev_is_valid_port(param->port_id)) {
67 ERROR("port %u invalid port ID", param->port_id);
70 dev = &rte_eth_devices[param->port_id];
71 priv = dev->data->dev_private;
72 switch (param->type) {
73 case MLX4_MP_REQ_CREATE_MR:
74 mp_init_msg(dev, &mp_res, param->type);
75 lkey = mlx4_mr_create_primary(dev, &entry, param->args.addr);
76 if (lkey == UINT32_MAX)
77 res->result = -rte_errno;
78 ret = rte_mp_reply(&mp_res, peer);
80 case MLX4_MP_REQ_VERBS_CMD_FD:
81 mp_init_msg(dev, &mp_res, param->type);
83 mp_res.fds[0] = priv->ctx->cmd_fd;
85 ret = rte_mp_reply(&mp_res, peer);
89 ERROR("port %u invalid mp request type", dev->data->port_id);
96 * IPC message handler of a secondary process.
99 * Pointer to Ethernet structure.
101 * Pointer to the peer socket path.
104 * 0 on success, a negative errno value otherwise and rte_errno is set.
107 mp_secondary_handle(const struct rte_mp_msg *mp_msg, const void *peer)
109 struct rte_mp_msg mp_res;
110 struct mlx4_mp_param *res = (struct mlx4_mp_param *)mp_res.param;
111 const struct mlx4_mp_param *param =
112 (const struct mlx4_mp_param *)mp_msg->param;
113 struct rte_eth_dev *dev;
116 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
117 if (!rte_eth_dev_is_valid_port(param->port_id)) {
119 ERROR("port %u invalid port ID", param->port_id);
122 dev = &rte_eth_devices[param->port_id];
123 switch (param->type) {
124 case MLX4_MP_REQ_START_RXTX:
125 INFO("port %u starting datapath", dev->data->port_id);
127 dev->tx_pkt_burst = mlx4_tx_burst;
128 dev->rx_pkt_burst = mlx4_rx_burst;
129 mp_init_msg(dev, &mp_res, param->type);
131 ret = rte_mp_reply(&mp_res, peer);
133 case MLX4_MP_REQ_STOP_RXTX:
134 INFO("port %u stopping datapath", dev->data->port_id);
135 dev->tx_pkt_burst = mlx4_tx_burst_removed;
136 dev->rx_pkt_burst = mlx4_rx_burst_removed;
138 mp_init_msg(dev, &mp_res, param->type);
140 ret = rte_mp_reply(&mp_res, peer);
144 ERROR("port %u invalid mp request type", dev->data->port_id);
151 * Broadcast request of stopping/starting data-path to secondary processes.
154 * Pointer to Ethernet structure.
159 mp_req_on_rxtx(struct rte_eth_dev *dev, enum mlx4_mp_req_type type)
161 struct rte_mp_msg mp_req;
162 struct rte_mp_msg *mp_res;
163 struct rte_mp_reply mp_rep;
164 struct mlx4_mp_param *res __rte_unused;
165 struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
169 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
170 if (!mlx4_shared_data->secondary_cnt)
172 if (type != MLX4_MP_REQ_START_RXTX && type != MLX4_MP_REQ_STOP_RXTX) {
173 ERROR("port %u unknown request (req_type %d)",
174 dev->data->port_id, type);
177 mp_init_msg(dev, &mp_req, type);
178 ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
180 if (rte_errno != ENOTSUP)
181 ERROR("port %u failed to request stop/start Rx/Tx (%d)",
182 dev->data->port_id, type);
185 if (mp_rep.nb_sent != mp_rep.nb_received) {
186 ERROR("port %u not all secondaries responded (req_type %d)",
187 dev->data->port_id, type);
190 for (i = 0; i < mp_rep.nb_received; i++) {
191 mp_res = &mp_rep.msgs[i];
192 res = (struct mlx4_mp_param *)mp_res->param;
194 ERROR("port %u request failed on secondary #%d",
195 dev->data->port_id, i);
204 * Broadcast request of starting data-path to secondary processes. The request
208 * Pointer to Ethernet structure.
211 mlx4_mp_req_start_rxtx(struct rte_eth_dev *dev)
213 mp_req_on_rxtx(dev, MLX4_MP_REQ_START_RXTX);
217 * Broadcast request of stopping data-path to secondary processes. The request
221 * Pointer to Ethernet structure.
224 mlx4_mp_req_stop_rxtx(struct rte_eth_dev *dev)
226 mp_req_on_rxtx(dev, MLX4_MP_REQ_STOP_RXTX);
230 * Request Memory Region creation to the primary process.
233 * Pointer to Ethernet structure.
235 * Target virtual address to register.
238 * 0 on success, a negative errno value otherwise and rte_errno is set.
241 mlx4_mp_req_mr_create(struct rte_eth_dev *dev, uintptr_t addr)
243 struct rte_mp_msg mp_req;
244 struct rte_mp_msg *mp_res;
245 struct rte_mp_reply mp_rep;
246 struct mlx4_mp_param *req = (struct mlx4_mp_param *)mp_req.param;
247 struct mlx4_mp_param *res;
248 struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
251 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
252 mp_init_msg(dev, &mp_req, MLX4_MP_REQ_CREATE_MR);
253 req->args.addr = addr;
254 ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
256 ERROR("port %u request to primary process failed",
260 MLX4_ASSERT(mp_rep.nb_received == 1);
261 mp_res = &mp_rep.msgs[0];
262 res = (struct mlx4_mp_param *)mp_res->param;
271 * IPC message handler of primary process.
274 * Pointer to Ethernet structure.
277 * fd on success, a negative errno value otherwise and rte_errno is set.
280 mlx4_mp_req_verbs_cmd_fd(struct rte_eth_dev *dev)
282 struct rte_mp_msg mp_req;
283 struct rte_mp_msg *mp_res;
284 struct rte_mp_reply mp_rep;
285 struct mlx4_mp_param *res;
286 struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
289 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
290 mp_init_msg(dev, &mp_req, MLX4_MP_REQ_VERBS_CMD_FD);
291 ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
293 ERROR("port %u request to primary process failed",
297 MLX4_ASSERT(mp_rep.nb_received == 1);
298 mp_res = &mp_rep.msgs[0];
299 res = (struct mlx4_mp_param *)mp_res->param;
301 rte_errno = -res->result;
302 ERROR("port %u failed to get command FD from primary process",
307 MLX4_ASSERT(mp_res->num_fds == 1);
308 ret = mp_res->fds[0];
309 DEBUG("port %u command FD from primary is %d",
310 dev->data->port_id, ret);
317 * Initialize by primary process.
320 mlx4_mp_init_primary(void)
324 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
326 /* primary is allowed to not support IPC */
327 ret = rte_mp_action_register(MLX4_MP_NAME, mp_primary_handle);
328 if (ret && rte_errno != ENOTSUP)
334 * Un-initialize by primary process.
337 mlx4_mp_uninit_primary(void)
339 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
340 rte_mp_action_unregister(MLX4_MP_NAME);
344 * Initialize by secondary process.
347 mlx4_mp_init_secondary(void)
349 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
350 return rte_mp_action_register(MLX4_MP_NAME, mp_secondary_handle);
354 * Un-initialize by secondary process.
357 mlx4_mp_uninit_secondary(void)
359 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
360 rte_mp_action_unregister(MLX4_MP_NAME);