1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2019 6WIND S.A.
3 * Copyright 2019 Mellanox Technologies, Ltd
10 #include <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;
114 #ifdef HAVE_IBV_MLX4_UAR_MMAP_OFFSET
115 struct mlx4_proc_priv *ppriv;
119 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
120 if (!rte_eth_dev_is_valid_port(param->port_id)) {
122 ERROR("port %u invalid port ID", param->port_id);
125 dev = &rte_eth_devices[param->port_id];
126 switch (param->type) {
127 case MLX4_MP_REQ_START_RXTX:
128 INFO("port %u starting datapath", dev->data->port_id);
129 dev->tx_pkt_burst = mlx4_tx_burst;
130 dev->rx_pkt_burst = mlx4_rx_burst;
131 #ifdef HAVE_IBV_MLX4_UAR_MMAP_OFFSET
132 ppriv = (struct mlx4_proc_priv *)dev->process_private;
133 if (ppriv->uar_table_sz != dev->data->nb_tx_queues) {
134 mlx4_tx_uar_uninit_secondary(dev);
135 mlx4_proc_priv_uninit(dev);
136 ret = mlx4_proc_priv_init(dev);
139 ret = mlx4_tx_uar_init_secondary(dev, mp_msg->fds[0]);
141 mlx4_proc_priv_uninit(dev);
147 mp_init_msg(dev, &mp_res, param->type);
149 ret = rte_mp_reply(&mp_res, peer);
151 case MLX4_MP_REQ_STOP_RXTX:
152 INFO("port %u stopping datapath", dev->data->port_id);
153 dev->tx_pkt_burst = mlx4_tx_burst_removed;
154 dev->rx_pkt_burst = mlx4_rx_burst_removed;
156 mp_init_msg(dev, &mp_res, param->type);
158 ret = rte_mp_reply(&mp_res, peer);
162 ERROR("port %u invalid mp request type", dev->data->port_id);
169 * Broadcast request of stopping/starting data-path to secondary processes.
172 * Pointer to Ethernet structure.
177 mp_req_on_rxtx(struct rte_eth_dev *dev, enum mlx4_mp_req_type type)
179 struct rte_mp_msg mp_req;
180 struct rte_mp_msg *mp_res;
181 struct rte_mp_reply mp_rep;
182 struct mlx4_mp_param *res __rte_unused;
183 struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
184 struct mlx4_priv *priv;
188 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
189 if (!mlx4_shared_data->secondary_cnt)
191 if (type != MLX4_MP_REQ_START_RXTX && type != MLX4_MP_REQ_STOP_RXTX) {
192 ERROR("port %u unknown request (req_type %d)",
193 dev->data->port_id, type);
196 mp_init_msg(dev, &mp_req, type);
197 if (type == MLX4_MP_REQ_START_RXTX) {
198 priv = dev->data->dev_private;
200 mp_req.fds[0] = priv->ctx->cmd_fd;
202 ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
204 if (rte_errno != ENOTSUP)
205 ERROR("port %u failed to request stop/start Rx/Tx (%d)",
206 dev->data->port_id, type);
209 if (mp_rep.nb_sent != mp_rep.nb_received) {
210 ERROR("port %u not all secondaries responded (req_type %d)",
211 dev->data->port_id, type);
214 for (i = 0; i < mp_rep.nb_received; i++) {
215 mp_res = &mp_rep.msgs[i];
216 res = (struct mlx4_mp_param *)mp_res->param;
218 ERROR("port %u request failed on secondary #%d",
219 dev->data->port_id, i);
228 * Broadcast request of starting data-path to secondary processes. The request
232 * Pointer to Ethernet structure.
235 mlx4_mp_req_start_rxtx(struct rte_eth_dev *dev)
237 mp_req_on_rxtx(dev, MLX4_MP_REQ_START_RXTX);
241 * Broadcast request of stopping data-path to secondary processes. The request
245 * Pointer to Ethernet structure.
248 mlx4_mp_req_stop_rxtx(struct rte_eth_dev *dev)
250 mp_req_on_rxtx(dev, MLX4_MP_REQ_STOP_RXTX);
254 * Request Memory Region creation to the primary process.
257 * Pointer to Ethernet structure.
259 * Target virtual address to register.
262 * 0 on success, a negative errno value otherwise and rte_errno is set.
265 mlx4_mp_req_mr_create(struct rte_eth_dev *dev, uintptr_t addr)
267 struct rte_mp_msg mp_req;
268 struct rte_mp_msg *mp_res;
269 struct rte_mp_reply mp_rep;
270 struct mlx4_mp_param *req = (struct mlx4_mp_param *)mp_req.param;
271 struct mlx4_mp_param *res;
272 struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
275 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
276 mp_init_msg(dev, &mp_req, MLX4_MP_REQ_CREATE_MR);
277 req->args.addr = addr;
278 ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
280 ERROR("port %u request to primary process failed",
284 MLX4_ASSERT(mp_rep.nb_received == 1);
285 mp_res = &mp_rep.msgs[0];
286 res = (struct mlx4_mp_param *)mp_res->param;
295 * IPC message handler of primary process.
298 * Pointer to Ethernet structure.
301 * fd on success, a negative errno value otherwise and rte_errno is set.
304 mlx4_mp_req_verbs_cmd_fd(struct rte_eth_dev *dev)
306 struct rte_mp_msg mp_req;
307 struct rte_mp_msg *mp_res;
308 struct rte_mp_reply mp_rep;
309 struct mlx4_mp_param *res;
310 struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
313 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
314 mp_init_msg(dev, &mp_req, MLX4_MP_REQ_VERBS_CMD_FD);
315 ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
317 ERROR("port %u request to primary process failed",
321 MLX4_ASSERT(mp_rep.nb_received == 1);
322 mp_res = &mp_rep.msgs[0];
323 res = (struct mlx4_mp_param *)mp_res->param;
325 rte_errno = -res->result;
326 ERROR("port %u failed to get command FD from primary process",
331 MLX4_ASSERT(mp_res->num_fds == 1);
332 ret = mp_res->fds[0];
333 DEBUG("port %u command FD from primary is %d",
334 dev->data->port_id, ret);
341 * Initialize by primary process.
344 mlx4_mp_init_primary(void)
348 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
350 /* primary is allowed to not support IPC */
351 ret = rte_mp_action_register(MLX4_MP_NAME, mp_primary_handle);
352 if (ret && rte_errno != ENOTSUP)
358 * Un-initialize by primary process.
361 mlx4_mp_uninit_primary(void)
363 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
364 rte_mp_action_unregister(MLX4_MP_NAME);
368 * Initialize by secondary process.
371 mlx4_mp_init_secondary(void)
373 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
374 return rte_mp_action_register(MLX4_MP_NAME, mp_secondary_handle);
378 * Un-initialize by secondary process.
381 mlx4_mp_uninit_secondary(void)
383 MLX4_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
384 rte_mp_action_unregister(MLX4_MP_NAME);