/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2016 6WIND S.A.
- * Copyright 2016 Mellanox Technologies, Ltd
+ * Copyright 2019 Mellanox Technologies, Ltd
*/
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <sys/stat.h>
-#include "mlx5.h"
+#include "rte_eal.h"
#include "mlx5_utils.h"
+#include "mlx5.h"
-/**
- * Initialise the socket to communicate with the secondary process
- *
- * @param[in] dev
- * Pointer to Ethernet device.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_socket_init(struct rte_eth_dev *dev)
-{
- struct mlx5_priv *priv = dev->data->dev_private;
- struct sockaddr_un sun = {
- .sun_family = AF_UNIX,
- };
- int ret;
- int flags;
+/* PMD socket service for tools. */
- /*
- * Close the last socket that was used to communicate
- * with the secondary process
- */
- if (priv->primary_socket)
- mlx5_socket_uninit(dev);
- /*
- * Initialise the socket to communicate with the secondary
- * process.
- */
- ret = socket(AF_UNIX, SOCK_STREAM, 0);
- if (ret < 0) {
- rte_errno = errno;
- DRV_LOG(WARNING, "port %u secondary process not supported: %s",
- dev->data->port_id, strerror(errno));
- goto error;
- }
- priv->primary_socket = ret;
- flags = fcntl(priv->primary_socket, F_GETFL, 0);
- if (flags == -1) {
- rte_errno = errno;
- goto error;
- }
- ret = fcntl(priv->primary_socket, F_SETFL, flags | O_NONBLOCK);
- if (ret < 0) {
- rte_errno = errno;
- goto error;
- }
- snprintf(sun.sun_path, sizeof(sun.sun_path), "/var/tmp/%s_%d",
- MLX5_DRIVER_NAME, priv->primary_socket);
- remove(sun.sun_path);
- ret = bind(priv->primary_socket, (const struct sockaddr *)&sun,
- sizeof(sun));
- if (ret < 0) {
- rte_errno = errno;
- DRV_LOG(WARNING,
- "port %u cannot bind socket, secondary process not"
- " supported: %s",
- dev->data->port_id, strerror(errno));
- goto close;
- }
- ret = listen(priv->primary_socket, 0);
- if (ret < 0) {
- rte_errno = errno;
- DRV_LOG(WARNING, "port %u secondary process not supported: %s",
- dev->data->port_id, strerror(errno));
- goto close;
- }
- return 0;
-close:
- remove(sun.sun_path);
-error:
- claim_zero(close(priv->primary_socket));
- priv->primary_socket = 0;
- return -rte_errno;
-}
+int server_socket; /* Unix socket for primary process. */
+struct rte_intr_handle server_intr_handle; /* Interrupt handler. */
-/**
- * Un-Initialise the socket to communicate with the secondary process
- *
- * @param[in] dev
- */
-void
-mlx5_socket_uninit(struct rte_eth_dev *dev)
+static void
+mlx5_pmd_make_path(struct sockaddr_un *addr, int pid)
{
- struct mlx5_priv *priv = dev->data->dev_private;
-
- MKSTR(path, "/var/tmp/%s_%d", MLX5_DRIVER_NAME, priv->primary_socket);
- claim_zero(close(priv->primary_socket));
- priv->primary_socket = 0;
- claim_zero(remove(path));
+ snprintf(addr->sun_path, sizeof(addr->sun_path), "/var/tmp/dpdk_%s_%d",
+ MLX5_DRIVER_NAME, pid);
}
/**
- * Handle socket interrupts.
- *
- * @param dev
- * Pointer to Ethernet device.
+ * Handle server pmd socket interrupts.
*/
-void
-mlx5_socket_handle(struct rte_eth_dev *dev)
+static void
+mlx5_pmd_socket_handle(void *cb __rte_unused)
{
- struct mlx5_priv *priv = dev->data->dev_private;
int conn_sock;
- int ret = 0;
+ int ret = -1;
struct cmsghdr *cmsg = NULL;
- struct ucred *cred = NULL;
- char buf[CMSG_SPACE(sizeof(struct ucred))] = { 0 };
- char vbuf[1024] = { 0 };
+ int data;
+ char buf[CMSG_SPACE(sizeof(int))] = { 0 };
struct iovec io = {
- .iov_base = vbuf,
- .iov_len = sizeof(*vbuf),
+ .iov_base = &data,
+ .iov_len = sizeof(data),
};
struct msghdr msg = {
.msg_iov = &io,
.msg_control = buf,
.msg_controllen = sizeof(buf),
};
- int *fd;
+ uint16_t port_id;
+ int fd;
+ FILE *file = NULL;
+ struct rte_eth_dev *dev;
/* Accept the connection from the client. */
- conn_sock = accept(priv->primary_socket, NULL, NULL);
+ conn_sock = accept(server_socket, NULL, NULL);
if (conn_sock < 0) {
- DRV_LOG(WARNING, "port %u connection failed: %s",
- dev->data->port_id, strerror(errno));
+ DRV_LOG(WARNING, "connection failed: %s", strerror(errno));
return;
}
- ret = setsockopt(conn_sock, SOL_SOCKET, SO_PASSCRED, &(int){1},
- sizeof(int));
- if (ret < 0) {
- ret = errno;
- DRV_LOG(WARNING, "port %u cannot change socket options: %s",
- dev->data->port_id, strerror(rte_errno));
- goto error;
- }
ret = recvmsg(conn_sock, &msg, MSG_WAITALL);
if (ret < 0) {
- ret = errno;
- DRV_LOG(WARNING, "port %u received an empty message: %s",
- dev->data->port_id, strerror(rte_errno));
+ DRV_LOG(WARNING, "wrong message received: %s",
+ strerror(errno));
goto error;
}
- /* Expect to receive credentials only. */
+ /* Receive file descriptor. */
cmsg = CMSG_FIRSTHDR(&msg);
- if (cmsg == NULL) {
- DRV_LOG(WARNING, "port %u no message", dev->data->port_id);
+ if (cmsg == NULL || cmsg->cmsg_type != SCM_RIGHTS ||
+ cmsg->cmsg_len < sizeof(int)) {
+ DRV_LOG(WARNING, "invalid file descriptor message");
goto error;
}
- if ((cmsg->cmsg_type == SCM_CREDENTIALS) &&
- (cmsg->cmsg_len >= sizeof(*cred))) {
- cred = (struct ucred *)CMSG_DATA(cmsg);
- assert(cred != NULL);
+ memcpy(&fd, CMSG_DATA(cmsg), sizeof(fd));
+ file = fdopen(fd, "w");
+ if (!file) {
+ DRV_LOG(WARNING, "Failed to open file");
+ goto error;
}
- cmsg = CMSG_NXTHDR(&msg, cmsg);
- if (cmsg != NULL) {
- DRV_LOG(WARNING, "port %u message wrongly formatted",
- dev->data->port_id);
+ /* Receive port number. */
+ if (msg.msg_iovlen != 1 || msg.msg_iov->iov_len < sizeof(uint16_t)) {
+ DRV_LOG(WARNING, "wrong port number message");
goto error;
}
- /* Make sure all the ancillary data was received and valid. */
- if ((cred == NULL) || (cred->uid != getuid()) ||
- (cred->gid != getgid())) {
- DRV_LOG(WARNING, "port %u wrong credentials",
- dev->data->port_id);
+ memcpy(&port_id, msg.msg_iov->iov_base, sizeof(port_id));
+ if (!rte_eth_dev_is_valid_port(port_id)) {
+ DRV_LOG(WARNING, "Invalid port %u", port_id);
goto error;
}
- /* Set-up the ancillary data. */
- cmsg = CMSG_FIRSTHDR(&msg);
- assert(cmsg != NULL);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_RIGHTS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(priv->ctx->cmd_fd));
- fd = (int *)CMSG_DATA(cmsg);
- *fd = priv->ctx->cmd_fd;
- ret = sendmsg(conn_sock, &msg, 0);
+ /* Dump flow. */
+ dev = &rte_eth_devices[port_id];
+ ret = mlx5_flow_dev_dump(dev, file, NULL);
+ /* Set-up the ancillary data and reply. */
+ msg.msg_controllen = 0;
+ msg.msg_control = NULL;
+ msg.msg_iovlen = 1;
+ msg.msg_iov = &io;
+ data = -ret;
+ io.iov_len = sizeof(data);
+ io.iov_base = &data;
+ do {
+ ret = sendmsg(conn_sock, &msg, 0);
+ } while (ret < 0 && errno == EINTR);
if (ret < 0)
- DRV_LOG(WARNING, "port %u cannot send response",
- dev->data->port_id);
+ DRV_LOG(WARNING, "failed to send response %s",
+ strerror(errno));
error:
- close(conn_sock);
+ if (conn_sock > 0)
+ close(conn_sock);
+ if (file)
+ fclose(file);
}
/**
- * Connect to the primary process.
+ * Install interrupt handler.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ * @return
+ * 0 on success, a negative errno value otherwise.
+ */
+static int
+mlx5_pmd_interrupt_handler_install(void)
+{
+ MLX5_ASSERT(server_socket);
+ server_intr_handle.fd = server_socket;
+ server_intr_handle.type = RTE_INTR_HANDLE_EXT;
+ return rte_intr_callback_register(&server_intr_handle,
+ mlx5_pmd_socket_handle, NULL);
+}
+
+/**
+ * Uninstall interrupt handler.
+ */
+static void
+mlx5_pmd_interrupt_handler_uninstall(void)
+{
+ if (server_socket) {
+ mlx5_intr_callback_unregister(&server_intr_handle,
+ mlx5_pmd_socket_handle,
+ NULL);
+ }
+ server_intr_handle.fd = 0;
+ server_intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
+}
+
+/**
+ * Initialise the socket to communicate with the secondary process
*
* @param[in] dev
- * Pointer to Ethernet structure.
+ * Pointer to Ethernet device.
*
* @return
- * fd on success, negative errno value otherwise and rte_errno is set.
+ * 0 on success, a negative value otherwise.
*/
int
-mlx5_socket_connect(struct rte_eth_dev *dev)
+mlx5_pmd_socket_init(void)
{
- struct mlx5_priv *priv = dev->data->dev_private;
struct sockaddr_un sun = {
.sun_family = AF_UNIX,
};
- int socket_fd = -1;
- int *fd = NULL;
- int ret;
- struct ucred *cred;
- char buf[CMSG_SPACE(sizeof(*cred))] = { 0 };
- char vbuf[1024] = { 0 };
- struct iovec io = {
- .iov_base = vbuf,
- .iov_len = sizeof(*vbuf),
- };
- struct msghdr msg = {
- .msg_control = buf,
- .msg_controllen = sizeof(buf),
- .msg_iov = &io,
- .msg_iovlen = 1,
- };
- struct cmsghdr *cmsg;
+ int ret = -1;
+ int flags;
+ MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
+ if (server_socket)
+ return 0;
+ /*
+ * Initialize the socket to communicate with the secondary
+ * process.
+ */
ret = socket(AF_UNIX, SOCK_STREAM, 0);
if (ret < 0) {
- rte_errno = errno;
- DRV_LOG(WARNING, "port %u cannot connect to primary",
- dev->data->port_id);
+ DRV_LOG(WARNING, "Failed to open mlx5 socket: %s",
+ strerror(errno));
goto error;
}
- socket_fd = ret;
- snprintf(sun.sun_path, sizeof(sun.sun_path), "/var/tmp/%s_%d",
- MLX5_DRIVER_NAME, priv->primary_socket);
- ret = connect(socket_fd, (const struct sockaddr *)&sun, sizeof(sun));
- if (ret < 0) {
- rte_errno = errno;
- DRV_LOG(WARNING, "port %u cannot connect to primary",
- dev->data->port_id);
- goto error;
- }
- cmsg = CMSG_FIRSTHDR(&msg);
- if (cmsg == NULL) {
- rte_errno = EINVAL;
- DRV_LOG(DEBUG, "port %u cannot get first message",
- dev->data->port_id);
+ server_socket = ret;
+ flags = fcntl(server_socket, F_GETFL, 0);
+ if (flags == -1)
goto error;
- }
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_CREDENTIALS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(*cred));
- cred = (struct ucred *)CMSG_DATA(cmsg);
- if (cred == NULL) {
- rte_errno = EINVAL;
- DRV_LOG(DEBUG, "port %u no credentials received",
- dev->data->port_id);
+ ret = fcntl(server_socket, F_SETFL, flags | O_NONBLOCK);
+ if (ret < 0)
goto error;
- }
- cred->pid = getpid();
- cred->uid = getuid();
- cred->gid = getgid();
- ret = sendmsg(socket_fd, &msg, MSG_DONTWAIT);
+ mlx5_pmd_make_path(&sun, getpid());
+ remove(sun.sun_path);
+ ret = bind(server_socket, (const struct sockaddr *)&sun, sizeof(sun));
if (ret < 0) {
- rte_errno = errno;
DRV_LOG(WARNING,
- "port %u cannot send credentials to primary: %s",
- dev->data->port_id, strerror(errno));
- goto error;
- }
- ret = recvmsg(socket_fd, &msg, MSG_WAITALL);
- if (ret <= 0) {
- rte_errno = errno;
- DRV_LOG(WARNING, "port %u no message from primary: %s",
- dev->data->port_id, strerror(errno));
- goto error;
+ "cannot bind mlx5 socket: %s", strerror(errno));
+ goto close;
}
- cmsg = CMSG_FIRSTHDR(&msg);
- if (cmsg == NULL) {
- rte_errno = EINVAL;
- DRV_LOG(WARNING, "port %u no file descriptor received",
- dev->data->port_id);
- goto error;
+ ret = listen(server_socket, 0);
+ if (ret < 0) {
+ DRV_LOG(WARNING, "cannot listen on mlx5 socket: %s",
+ strerror(errno));
+ goto close;
}
- fd = (int *)CMSG_DATA(cmsg);
- if (*fd < 0) {
- DRV_LOG(WARNING, "port %u no file descriptor received: %s",
- dev->data->port_id, strerror(errno));
- rte_errno = *fd;
- goto error;
+ if (mlx5_pmd_interrupt_handler_install()) {
+ DRV_LOG(WARNING, "cannot register interrupt handler for mlx5 socket: %s",
+ strerror(errno));
+ goto close;
}
- ret = *fd;
- close(socket_fd);
- return ret;
+ return 0;
+close:
+ remove(sun.sun_path);
error:
- if (socket_fd != -1)
- close(socket_fd);
- return -rte_errno;
+ claim_zero(close(server_socket));
+ server_socket = 0;
+ DRV_LOG(ERR, "Cannot initialize socket: %s", strerror(errno));
+ return -errno;
+}
+
+/**
+ * Un-Initialize the pmd socket
+ */
+RTE_FINI(mlx5_pmd_socket_uninit)
+{
+ if (!server_socket)
+ return;
+ mlx5_pmd_interrupt_handler_uninstall();
+ claim_zero(close(server_socket));
+ server_socket = 0;
+ MKSTR(path, "/var/tmp/dpdk_%s_%d", MLX5_DRIVER_NAME, getpid());
+ claim_zero(remove(path));
}
git.droids-corp.org / dpdk.git / blobdiff