new file mode 100644
@@ -0,0 +1,188 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2019 6WIND S.A.
+ * Copyright 2019 Mellanox Technologies, Ltd
+ */
+
+#include <stdio.h>
+#include <time.h>
+
+#include <rte_eal.h>
+#include <rte_errno.h>
+
+#include "mlx5_common_mp.h"
+#include "mlx5_common_utils.h"
+
+/**
+ * Request Memory Region creation to the primary process.
+ *
+ * @param[in] mp_id
+ * ID of the MP process.
+ * @param addr
+ * Target virtual address to register.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_mp_req_mr_create(struct mlx5_mp_id *mp_id, uintptr_t addr)
+{
+ struct rte_mp_msg mp_req;
+ struct rte_mp_msg *mp_res;
+ struct rte_mp_reply mp_rep;
+ struct mlx5_mp_param *req = (struct mlx5_mp_param *)mp_req.param;
+ struct mlx5_mp_param *res;
+ struct timespec ts = {.tv_sec = MLX5_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
+ int ret;
+
+ MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
+ mp_init_msg(mp_id, &mp_req, MLX5_MP_REQ_CREATE_MR);
+ req->args.addr = addr;
+ ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
+ if (ret) {
+ DRV_LOG(ERR, "port %u request to primary process failed",
+ mp_id->port_id);
+ return -rte_errno;
+ }
+ MLX5_ASSERT(mp_rep.nb_received == 1);
+ mp_res = &mp_rep.msgs[0];
+ res = (struct mlx5_mp_param *)mp_res->param;
+ ret = res->result;
+ if (ret)
+ rte_errno = -ret;
+ free(mp_rep.msgs);
+ return ret;
+}
+
+/**
+ * Request Verbs queue state modification to the primary process.
+ *
+ * @param[in] mp_id
+ * ID of the MP process.
+ * @param sm
+ * State modify parameters.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_mp_req_queue_state_modify(struct mlx5_mp_id *mp_id,
+ struct mlx5_mp_arg_queue_state_modify *sm)
+{
+ struct rte_mp_msg mp_req;
+ struct rte_mp_msg *mp_res;
+ struct rte_mp_reply mp_rep;
+ struct mlx5_mp_param *req = (struct mlx5_mp_param *)mp_req.param;
+ struct mlx5_mp_param *res;
+ struct timespec ts = {.tv_sec = MLX5_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
+ int ret;
+
+ MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
+ mp_init_msg(mp_id, &mp_req, MLX5_MP_REQ_QUEUE_STATE_MODIFY);
+ req->args.state_modify = *sm;
+ ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
+ if (ret) {
+ DRV_LOG(ERR, "port %u request to primary process failed",
+ mp_id->port_id);
+ return -rte_errno;
+ }
+ MLX5_ASSERT(mp_rep.nb_received == 1);
+ mp_res = &mp_rep.msgs[0];
+ res = (struct mlx5_mp_param *)mp_res->param;
+ ret = res->result;
+ free(mp_rep.msgs);
+ return ret;
+}
+
+/**
+ * Request Verbs command file descriptor for mmap to the primary process.
+ *
+ * @param[in] mp_id
+ * ID of the MP process.
+ *
+ * @return
+ * fd on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_mp_req_verbs_cmd_fd(struct mlx5_mp_id *mp_id)
+{
+ struct rte_mp_msg mp_req;
+ struct rte_mp_msg *mp_res;
+ struct rte_mp_reply mp_rep;
+ struct mlx5_mp_param *res;
+ struct timespec ts = {.tv_sec = MLX5_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
+ int ret;
+
+ MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
+ mp_init_msg(mp_id, &mp_req, MLX5_MP_REQ_VERBS_CMD_FD);
+ ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
+ if (ret) {
+ DRV_LOG(ERR, "port %u request to primary process failed",
+ mp_id->port_id);
+ return -rte_errno;
+ }
+ MLX5_ASSERT(mp_rep.nb_received == 1);
+ mp_res = &mp_rep.msgs[0];
+ res = (struct mlx5_mp_param *)mp_res->param;
+ if (res->result) {
+ rte_errno = -res->result;
+ DRV_LOG(ERR,
+ "port %u failed to get command FD from primary process",
+ mp_id->port_id);
+ ret = -rte_errno;
+ goto exit;
+ }
+ MLX5_ASSERT(mp_res->num_fds == 1);
+ ret = mp_res->fds[0];
+ DRV_LOG(DEBUG, "port %u command FD from primary is %d",
+ mp_id->port_id, ret);
+exit:
+ free(mp_rep.msgs);
+ return ret;
+}
+
+/**
+ * Initialize by primary process.
+ */
+int
+mlx5_mp_init_primary(const char *name, const rte_mp_t primary_action)
+{
+ int ret;
+
+ MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
+
+ /* primary is allowed to not support IPC */
+ ret = rte_mp_action_register(name, primary_action);
+ if (ret && rte_errno != ENOTSUP)
+ return -1;
+ return 0;
+}
+
+/**
+ * Un-initialize by primary process.
+ */
+void
+mlx5_mp_uninit_primary(const char *name)
+{
+ MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
+ rte_mp_action_unregister(name);
+}
+
+/**
+ * Initialize by secondary process.
+ */
+int
+mlx5_mp_init_secondary(const char *name, const rte_mp_t secondary_action)
+{
+ MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
+ return rte_mp_action_register(name, secondary_action);
+}
+
+/**
+ * Un-initialize by secondary process.
+ */
+void
+mlx5_mp_uninit_secondary(const char *name)
+{
+ MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_SECONDARY);
+ rte_mp_action_unregister(name);
+}
new file mode 100644
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2018 6WIND S.A.
+ * Copyright 2018 Mellanox Technologies, Ltd
+ */
+
+#ifndef RTE_PMD_MLX5_COMMON_MP_H_
+#define RTE_PMD_MLX5_COMMON_MP_H_
+
+/* Verbs header. */
+/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+#include <infiniband/verbs.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-Wpedantic"
+#endif
+
+#include <rte_eal.h>
+#include <rte_string_fns.h>
+
+/* Request types for IPC. */
+enum mlx5_mp_req_type {
+ MLX5_MP_REQ_VERBS_CMD_FD = 1,
+ MLX5_MP_REQ_CREATE_MR,
+ MLX5_MP_REQ_START_RXTX,
+ MLX5_MP_REQ_STOP_RXTX,
+ MLX5_MP_REQ_QUEUE_STATE_MODIFY,
+};
+
+struct mlx5_mp_arg_queue_state_modify {
+ uint8_t is_wq; /* Set if WQ. */
+ uint16_t queue_id; /* DPDK queue ID. */
+ enum ibv_wq_state state; /* WQ requested state. */
+};
+
+/* Pameters for IPC. */
+struct mlx5_mp_param {
+ enum mlx5_mp_req_type type;
+ int port_id;
+ int result;
+ RTE_STD_C11
+ union {
+ uintptr_t addr; /* MLX5_MP_REQ_CREATE_MR */
+ struct mlx5_mp_arg_queue_state_modify state_modify;
+ /* MLX5_MP_REQ_QUEUE_STATE_MODIFY */
+ } args;
+};
+
+/* Identifier of a MP process */
+struct mlx5_mp_id {
+ char name[RTE_MP_MAX_NAME_LEN];
+ uint16_t port_id;
+};
+
+/** Request timeout for IPC. */
+#define MLX5_MP_REQ_TIMEOUT_SEC 5
+
+/**
+ * Initialize IPC message.
+ *
+ * @param[in] port_id
+ * Port ID of the device.
+ * @param[out] msg
+ * Pointer to message to fill in.
+ * @param[in] type
+ * Message type.
+ */
+static inline void
+mp_init_msg(struct mlx5_mp_id *mp_id, struct rte_mp_msg *msg,
+ enum mlx5_mp_req_type type)
+{
+ struct mlx5_mp_param *param = (struct mlx5_mp_param *)msg->param;
+
+ memset(msg, 0, sizeof(*msg));
+ strlcpy(msg->name, mp_id->name, sizeof(msg->name));
+ msg->len_param = sizeof(*param);
+ param->type = type;
+ param->port_id = mp_id->port_id;
+}
+
+__rte_experimental
+int mlx5_mp_init_primary(const char *name, const rte_mp_t primary_action);
+__rte_experimental
+void mlx5_mp_uninit_primary(const char *name);
+__rte_experimental
+int mlx5_mp_init_secondary(const char *name, const rte_mp_t secondary_action);
+__rte_experimental
+void mlx5_mp_uninit_secondary(const char *name);
+__rte_experimental
+int mlx5_mp_req_mr_create(struct mlx5_mp_id *mp_id, uintptr_t addr);
+__rte_experimental
+int mlx5_mp_req_queue_state_modify(struct mlx5_mp_id *mp_id,
+ struct mlx5_mp_arg_queue_state_modify *sm);
+__rte_experimental
+int mlx5_mp_req_verbs_cmd_fd(struct mlx5_mp_id *mp_id);
+
+#endif /* RTE_PMD_MLX5_COMMON_MP_H_ */
@@ -48,4 +48,17 @@ DPDK_20.0.1 {
mlx5_nl_vlan_vmwa_delete;
mlx5_translate_port_name;
+
+};
+
+EXPERIMENTAL {
+ global:
+
+ mlx5_mp_init_primary;
+ mlx5_mp_uninit_primary;
+ mlx5_mp_init_secondary;
+ mlx5_mp_uninit_secondary;
+ mlx5_mp_req_mr_create;
+ mlx5_mp_req_queue_state_modify;
+ mlx5_mp_req_verbs_cmd_fd;
};