c7ef989970
Currently, IPC API will silently ignore unsupported IPC. Fix the API call and its callers to explicitly handle unsupported IPC cases. Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
363 lines
8.8 KiB
C
363 lines
8.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2019 6WIND S.A.
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* Copyright 2019 Mellanox Technologies, Ltd
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <time.h>
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#include <rte_eal.h>
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#include <rte_ethdev_driver.h>
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#include <rte_string_fns.h>
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#include "mlx4.h"
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#include "mlx4_rxtx.h"
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#include "mlx4_utils.h"
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/**
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* Initialize IPC message.
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*
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* @param[in] dev
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* Pointer to Ethernet structure.
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* @param[out] msg
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* Pointer to message to fill in.
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* @param[in] type
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* Message type.
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*/
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static inline void
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mp_init_msg(struct rte_eth_dev *dev, struct rte_mp_msg *msg,
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enum mlx4_mp_req_type type)
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{
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struct mlx4_mp_param *param = (struct mlx4_mp_param *)msg->param;
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memset(msg, 0, sizeof(*msg));
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strlcpy(msg->name, MLX4_MP_NAME, sizeof(msg->name));
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msg->len_param = sizeof(*param);
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param->type = type;
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param->port_id = dev->data->port_id;
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}
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/**
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* IPC message handler of primary process.
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*
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* @param[in] dev
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* Pointer to Ethernet structure.
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* @param[in] peer
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* Pointer to the peer socket path.
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*
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* @return
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* 0 on success, negative errno value otherwise and rte_errno is set.
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*/
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static int
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mp_primary_handle(const struct rte_mp_msg *mp_msg, const void *peer)
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{
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struct rte_mp_msg mp_res;
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struct mlx4_mp_param *res = (struct mlx4_mp_param *)mp_res.param;
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const struct mlx4_mp_param *param =
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(const struct mlx4_mp_param *)mp_msg->param;
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struct rte_eth_dev *dev;
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struct mlx4_priv *priv;
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struct mlx4_mr_cache entry;
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uint32_t lkey;
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int ret;
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assert(rte_eal_process_type() == RTE_PROC_PRIMARY);
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if (!rte_eth_dev_is_valid_port(param->port_id)) {
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rte_errno = ENODEV;
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ERROR("port %u invalid port ID", param->port_id);
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return -rte_errno;
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}
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dev = &rte_eth_devices[param->port_id];
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priv = dev->data->dev_private;
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switch (param->type) {
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case MLX4_MP_REQ_CREATE_MR:
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mp_init_msg(dev, &mp_res, param->type);
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lkey = mlx4_mr_create_primary(dev, &entry, param->args.addr);
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if (lkey == UINT32_MAX)
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res->result = -rte_errno;
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ret = rte_mp_reply(&mp_res, peer);
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break;
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case MLX4_MP_REQ_VERBS_CMD_FD:
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mp_init_msg(dev, &mp_res, param->type);
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mp_res.num_fds = 1;
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mp_res.fds[0] = priv->ctx->cmd_fd;
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res->result = 0;
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ret = rte_mp_reply(&mp_res, peer);
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break;
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default:
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rte_errno = EINVAL;
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ERROR("port %u invalid mp request type", dev->data->port_id);
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return -rte_errno;
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}
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return ret;
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}
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/**
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* IPC message handler of a secondary process.
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*
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* @param[in] dev
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* Pointer to Ethernet structure.
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* @param[in] peer
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* Pointer to the peer socket path.
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*
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* @return
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* 0 on success, a negative errno value otherwise and rte_errno is set.
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*/
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static int
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mp_secondary_handle(const struct rte_mp_msg *mp_msg, const void *peer)
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{
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struct rte_mp_msg mp_res;
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struct mlx4_mp_param *res = (struct mlx4_mp_param *)mp_res.param;
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const struct mlx4_mp_param *param =
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(const struct mlx4_mp_param *)mp_msg->param;
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struct rte_eth_dev *dev;
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int ret;
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assert(rte_eal_process_type() == RTE_PROC_SECONDARY);
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if (!rte_eth_dev_is_valid_port(param->port_id)) {
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rte_errno = ENODEV;
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ERROR("port %u invalid port ID", param->port_id);
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return -rte_errno;
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}
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dev = &rte_eth_devices[param->port_id];
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switch (param->type) {
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case MLX4_MP_REQ_START_RXTX:
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INFO("port %u starting datapath", dev->data->port_id);
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rte_mb();
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dev->tx_pkt_burst = mlx4_tx_burst;
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dev->rx_pkt_burst = mlx4_rx_burst;
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mp_init_msg(dev, &mp_res, param->type);
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res->result = 0;
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ret = rte_mp_reply(&mp_res, peer);
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break;
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case MLX4_MP_REQ_STOP_RXTX:
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INFO("port %u stopping datapath", dev->data->port_id);
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dev->tx_pkt_burst = mlx4_tx_burst_removed;
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dev->rx_pkt_burst = mlx4_rx_burst_removed;
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rte_mb();
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mp_init_msg(dev, &mp_res, param->type);
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res->result = 0;
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ret = rte_mp_reply(&mp_res, peer);
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break;
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default:
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rte_errno = EINVAL;
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ERROR("port %u invalid mp request type", dev->data->port_id);
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return -rte_errno;
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}
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return ret;
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}
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/**
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* Broadcast request of stopping/starting data-path to secondary processes.
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*
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* @param[in] dev
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* Pointer to Ethernet structure.
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* @param[in] type
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* Request type.
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*/
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static void
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mp_req_on_rxtx(struct rte_eth_dev *dev, enum mlx4_mp_req_type type)
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{
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struct rte_mp_msg mp_req;
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struct rte_mp_msg *mp_res;
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struct rte_mp_reply mp_rep;
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struct mlx4_mp_param *res __rte_unused;
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struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
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int ret;
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int i;
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assert(rte_eal_process_type() == RTE_PROC_PRIMARY);
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if (!mlx4_shared_data->secondary_cnt)
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return;
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if (type != MLX4_MP_REQ_START_RXTX && type != MLX4_MP_REQ_STOP_RXTX) {
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ERROR("port %u unknown request (req_type %d)",
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dev->data->port_id, type);
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return;
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}
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mp_init_msg(dev, &mp_req, type);
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ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
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if (ret) {
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if (rte_errno != ENOTSUP)
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ERROR("port %u failed to request stop/start Rx/Tx (%d)",
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dev->data->port_id, type);
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goto exit;
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}
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if (mp_rep.nb_sent != mp_rep.nb_received) {
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ERROR("port %u not all secondaries responded (req_type %d)",
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dev->data->port_id, type);
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goto exit;
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}
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for (i = 0; i < mp_rep.nb_received; i++) {
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mp_res = &mp_rep.msgs[i];
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res = (struct mlx4_mp_param *)mp_res->param;
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if (res->result) {
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ERROR("port %u request failed on secondary #%d",
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dev->data->port_id, i);
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goto exit;
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}
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}
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exit:
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free(mp_rep.msgs);
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}
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/**
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* Broadcast request of starting data-path to secondary processes. The request
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* is synchronous.
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*
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* @param[in] dev
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* Pointer to Ethernet structure.
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*/
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void
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mlx4_mp_req_start_rxtx(struct rte_eth_dev *dev)
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{
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mp_req_on_rxtx(dev, MLX4_MP_REQ_START_RXTX);
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}
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/**
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* Broadcast request of stopping data-path to secondary processes. The request
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* is synchronous.
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*
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* @param[in] dev
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* Pointer to Ethernet structure.
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*/
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void
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mlx4_mp_req_stop_rxtx(struct rte_eth_dev *dev)
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{
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mp_req_on_rxtx(dev, MLX4_MP_REQ_STOP_RXTX);
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}
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/**
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* Request Memory Region creation to the primary process.
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*
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* @param[in] dev
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* Pointer to Ethernet structure.
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* @param addr
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* Target virtual address to register.
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*
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* @return
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* 0 on success, a negative errno value otherwise and rte_errno is set.
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*/
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int
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mlx4_mp_req_mr_create(struct rte_eth_dev *dev, uintptr_t addr)
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{
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struct rte_mp_msg mp_req;
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struct rte_mp_msg *mp_res;
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struct rte_mp_reply mp_rep;
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struct mlx4_mp_param *req = (struct mlx4_mp_param *)mp_req.param;
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struct mlx4_mp_param *res;
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struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
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int ret;
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assert(rte_eal_process_type() == RTE_PROC_SECONDARY);
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mp_init_msg(dev, &mp_req, MLX4_MP_REQ_CREATE_MR);
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req->args.addr = addr;
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ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
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if (ret) {
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ERROR("port %u request to primary process failed",
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dev->data->port_id);
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return -rte_errno;
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}
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assert(mp_rep.nb_received == 1);
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mp_res = &mp_rep.msgs[0];
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res = (struct mlx4_mp_param *)mp_res->param;
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ret = res->result;
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if (ret)
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rte_errno = -ret;
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free(mp_rep.msgs);
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return ret;
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}
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/**
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* IPC message handler of primary process.
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*
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* @param[in] dev
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* Pointer to Ethernet structure.
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*
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* @return
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* fd on success, a negative errno value otherwise and rte_errno is set.
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*/
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int
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mlx4_mp_req_verbs_cmd_fd(struct rte_eth_dev *dev)
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{
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struct rte_mp_msg mp_req;
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struct rte_mp_msg *mp_res;
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struct rte_mp_reply mp_rep;
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struct mlx4_mp_param *res;
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struct timespec ts = {.tv_sec = MLX4_MP_REQ_TIMEOUT_SEC, .tv_nsec = 0};
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int ret;
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assert(rte_eal_process_type() == RTE_PROC_SECONDARY);
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mp_init_msg(dev, &mp_req, MLX4_MP_REQ_VERBS_CMD_FD);
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ret = rte_mp_request_sync(&mp_req, &mp_rep, &ts);
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if (ret) {
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ERROR("port %u request to primary process failed",
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dev->data->port_id);
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return -rte_errno;
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}
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assert(mp_rep.nb_received == 1);
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mp_res = &mp_rep.msgs[0];
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res = (struct mlx4_mp_param *)mp_res->param;
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if (res->result) {
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rte_errno = -res->result;
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ERROR("port %u failed to get command FD from primary process",
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dev->data->port_id);
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ret = -rte_errno;
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goto exit;
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}
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assert(mp_res->num_fds == 1);
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ret = mp_res->fds[0];
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DEBUG("port %u command FD from primary is %d",
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dev->data->port_id, ret);
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exit:
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free(mp_rep.msgs);
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return ret;
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}
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/**
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* Initialize by primary process.
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*/
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int
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mlx4_mp_init_primary(void)
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{
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int ret;
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assert(rte_eal_process_type() == RTE_PROC_PRIMARY);
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/* primary is allowed to not support IPC */
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ret = rte_mp_action_register(MLX4_MP_NAME, mp_primary_handle);
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if (ret && rte_errno != ENOTSUP)
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return -1;
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return 0;
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}
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/**
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* Un-initialize by primary process.
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*/
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void
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mlx4_mp_uninit_primary(void)
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{
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assert(rte_eal_process_type() == RTE_PROC_PRIMARY);
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rte_mp_action_unregister(MLX4_MP_NAME);
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}
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/**
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* Initialize by secondary process.
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*/
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int
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mlx4_mp_init_secondary(void)
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{
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assert(rte_eal_process_type() == RTE_PROC_SECONDARY);
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return rte_mp_action_register(MLX4_MP_NAME, mp_secondary_handle);
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}
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/**
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* Un-initialize by secondary process.
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*/
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void
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mlx4_mp_uninit_secondary(void)
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{
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assert(rte_eal_process_type() == RTE_PROC_SECONDARY);
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rte_mp_action_unregister(MLX4_MP_NAME);
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}
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