-/*-
- * BSD LICENSE
- *
- * Copyright 2016 6WIND S.A.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of 6WIND S.A. nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2019 Mellanox Technologies, Ltd
*/
+
+#ifndef _GNU_SOURCE
#define _GNU_SOURCE
+#endif
#include <sys/types.h>
#include <sys/socket.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] priv
- * Pointer to private structure.
- *
- * @return
- * 0 on success, errno value on failure.
- */
-int
-priv_socket_init(struct priv *priv)
-{
- struct sockaddr_un sun = {
- .sun_family = AF_UNIX,
- };
- int ret;
- int flags;
- struct stat file_stat;
+/* PMD socket service for tools. */
- /*
- * Initialise the socket to communicate with the secondary
- * process.
- */
- ret = socket(AF_UNIX, SOCK_STREAM, 0);
- if (ret < 0) {
- WARN("secondary process not supported: %s", strerror(errno));
- return ret;
- }
- priv->primary_socket = ret;
- flags = fcntl(priv->primary_socket, F_GETFL, 0);
- if (flags == -1)
- goto out;
- ret = fcntl(priv->primary_socket, F_SETFL, flags | O_NONBLOCK);
- if (ret < 0)
- goto out;
- snprintf(sun.sun_path, sizeof(sun.sun_path), "/var/tmp/%s_%d",
- MLX5_DRIVER_NAME, priv->primary_socket);
- ret = stat(sun.sun_path, &file_stat);
- if (!ret)
- claim_zero(remove(sun.sun_path));
- ret = bind(priv->primary_socket, (const struct sockaddr *)&sun,
- sizeof(sun));
- if (ret < 0) {
- WARN("cannot bind socket, secondary process not supported: %s",
- strerror(errno));
- goto close;
- }
- ret = listen(priv->primary_socket, 0);
- if (ret < 0) {
- WARN("Secondary process not supported: %s", strerror(errno));
- goto close;
- }
- return ret;
-close:
- remove(sun.sun_path);
-out:
- claim_zero(close(priv->primary_socket));
- priv->primary_socket = 0;
- return -(ret);
-}
+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] priv
- * Pointer to private structure.
- *
- * @return
- * 0 on success, errno value on failure.
- */
-int
-priv_socket_uninit(struct priv *priv)
+static void
+mlx5_pmd_make_path(struct sockaddr_un *addr, int pid)
{
- 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));
- return 0;
+ snprintf(addr->sun_path, sizeof(addr->sun_path), "/var/tmp/dpdk_%s_%d",
+ MLX5_DRIVER_NAME, pid);
}
/**
- * Handle socket interrupts.
- *
- * @param priv
- * Pointer to private structure.
+ * Handle server pmd socket interrupts.
*/
-void
-priv_socket_handle(struct priv *priv)
+static void
+mlx5_pmd_socket_handle(void *cb __rte_unused)
{
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) {
- WARN("connection failed: %s", 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) {
- WARN("cannot change socket options");
- goto out;
- }
ret = recvmsg(conn_sock, &msg, MSG_WAITALL);
if (ret < 0) {
- WARN("received an empty message: %s", strerror(errno));
- goto out;
- }
- /* Expect to receive credentials only. */
- cmsg = CMSG_FIRSTHDR(&msg);
- if (cmsg == NULL) {
- WARN("no message");
- goto out;
- }
- if ((cmsg->cmsg_type == SCM_CREDENTIALS) &&
- (cmsg->cmsg_len >= sizeof(*cred))) {
- cred = (struct ucred *)CMSG_DATA(cmsg);
- assert(cred != NULL);
+ DRV_LOG(WARNING, "wrong message received: %s",
+ strerror(errno));
+ goto error;
}
- cmsg = CMSG_NXTHDR(&msg, cmsg);
- if (cmsg != NULL) {
- WARN("Message wrongly formatted");
- goto out;
- }
- /* Make sure all the ancillary data was received and valid. */
- if ((cred == NULL) || (cred->uid != getuid()) ||
- (cred->gid != getgid())) {
- WARN("wrong credentials");
- goto out;
- }
- /* Set-up the ancillary data. */
+ /* Receive file descriptor. */
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);
+ if (cmsg == NULL || cmsg->cmsg_type != SCM_RIGHTS ||
+ cmsg->cmsg_len < sizeof(int)) {
+ DRV_LOG(WARNING, "invalid file descriptor message");
+ goto error;
+ }
+ memcpy(&fd, CMSG_DATA(cmsg), sizeof(fd));
+ file = fdopen(fd, "w");
+ if (!file) {
+ DRV_LOG(WARNING, "Failed to open file");
+ goto error;
+ }
+ /* 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;
+ }
+ 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;
+ }
+ /* 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)
- WARN("cannot send response");
-out:
- close(conn_sock);
+ DRV_LOG(WARNING, "failed to send response %s",
+ strerror(errno));
+error:
+ if (conn_sock > 0)
+ close(conn_sock);
+ if (file)
+ fclose(file);
}
/**
- * Connect to the primary process.
+ * Install interrupt handler.
*
- * @param[in] priv
- * Pointer to private structure.
+ * @param dev
+ * Pointer to Ethernet device.
+ * @return
+ * 0 on success, a negative errno value otherwise.
+ */
+static int
+mlx5_pmd_interrupt_handler_install(void)
+{
+ 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 device.
*
* @return
- * fd on success, negative errno value on failure.
+ * 0 on success, a negative value otherwise.
*/
int
-priv_socket_connect(struct priv *priv)
+mlx5_pmd_socket_init(void)
{
struct sockaddr_un sun = {
.sun_family = AF_UNIX,
};
- int socket_fd;
- 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;
+ 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) {
- WARN("cannot connect to primary");
- return ret;
+ 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));
+ server_socket = ret;
+ flags = fcntl(server_socket, F_GETFL, 0);
+ if (flags == -1)
+ goto error;
+ ret = fcntl(server_socket, F_SETFL, flags | O_NONBLOCK);
+ if (ret < 0)
+ goto error;
+ mlx5_pmd_make_path(&sun, getpid());
+ remove(sun.sun_path);
+ ret = bind(server_socket, (const struct sockaddr *)&sun, sizeof(sun));
if (ret < 0) {
- WARN("cannot connect to primary");
- goto out;
- }
- cmsg = CMSG_FIRSTHDR(&msg);
- if (cmsg == NULL) {
- DEBUG("cannot get first message");
- goto out;
- }
- 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) {
- DEBUG("no credentials received");
- goto out;
+ DRV_LOG(WARNING,
+ "cannot bind mlx5 socket: %s", strerror(errno));
+ goto close;
}
- cred->pid = getpid();
- cred->uid = getuid();
- cred->gid = getgid();
- ret = sendmsg(socket_fd, &msg, MSG_DONTWAIT);
+ ret = listen(server_socket, 0);
if (ret < 0) {
- WARN("cannot send credentials to primary: %s",
- strerror(errno));
- goto out;
- }
- ret = recvmsg(socket_fd, &msg, MSG_WAITALL);
- if (ret <= 0) {
- WARN("no message from primary: %s", strerror(errno));
- goto out;
- }
- cmsg = CMSG_FIRSTHDR(&msg);
- if (cmsg == NULL) {
- WARN("No file descriptor received");
- goto out;
+ DRV_LOG(WARNING, "cannot listen on mlx5 socket: %s",
+ strerror(errno));
+ goto close;
}
- fd = (int *)CMSG_DATA(cmsg);
- if (*fd <= 0) {
- WARN("no file descriptor received: %s", strerror(errno));
- ret = *fd;
- goto out;
+ if (mlx5_pmd_interrupt_handler_install()) {
+ DRV_LOG(WARNING, "cannot register interrupt handler for mlx5 socket: %s",
+ strerror(errno));
+ goto close;
}
- ret = *fd;
-out:
- close(socket_fd);
- return ret;
+ return 0;
+close:
+ remove(sun.sun_path);
+error:
+ claim_zero(close(server_socket));
+ server_socket = 0;
+ DRV_LOG(ERR, "Cannot initialize socket: %s", strerror(errno));
+ return -errno;
+}
+
+/**
+ * Un-Initialize the pmd socket
+ */
+void __attribute__((destructor))
+mlx5_pmd_socket_uninit(void)
+{
+ 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