-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * 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 Intel Corporation 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(c) 2010-2016 Intel Corporation
*/
#include <sys/socket.h>
#include <errno.h>
#include "vhost.h"
+#include "virtio_user_dev.h"
+
+/* The version of the protocol we support */
+#define VHOST_USER_VERSION 0x1
+
+#define VHOST_MEMORY_MAX_NREGIONS 8
+struct vhost_memory {
+ uint32_t nregions;
+ uint32_t padding;
+ struct vhost_memory_region regions[VHOST_MEMORY_MAX_NREGIONS];
+};
+
+struct vhost_user_msg {
+ enum vhost_user_request request;
+
+#define VHOST_USER_VERSION_MASK 0x3
+#define VHOST_USER_REPLY_MASK (0x1 << 2)
+ uint32_t flags;
+ uint32_t size; /* the following payload size */
+ union {
+#define VHOST_USER_VRING_IDX_MASK 0xff
+#define VHOST_USER_VRING_NOFD_MASK (0x1 << 8)
+ uint64_t u64;
+ struct vhost_vring_state state;
+ struct vhost_vring_addr addr;
+ struct vhost_memory memory;
+ } payload;
+ int fds[VHOST_MEMORY_MAX_NREGIONS];
+} __attribute((packed));
+
+#define VHOST_USER_HDR_SIZE offsetof(struct vhost_user_msg, payload.u64)
+#define VHOST_USER_PAYLOAD_SIZE \
+ (sizeof(struct vhost_user_msg) - VHOST_USER_HDR_SIZE)
static int
vhost_user_write(int fd, void *buf, int len, int *fds, int fd_num)
}
sz_payload = msg->size;
+
+ if ((size_t)sz_payload > sizeof(msg->payload))
+ goto fail;
+
if (sz_payload) {
ret = recv(fd, (void *)((char *)msg + sz_hdr), sz_payload, 0);
if (ret < sz_payload) {
static int
get_hugepage_file_info(struct hugepage_file_info huges[], int max)
{
- int idx;
+ int idx, k, exist;
FILE *f;
char buf[BUFSIZ], *tmp, *tail;
char *str_underline, *str_start;
int huge_index;
uint64_t v_start, v_end;
+ struct stat stats;
f = fopen("/proc/self/maps", "r");
if (!f) {
if (sscanf(str_start, "map_%d", &huge_index) != 1)
continue;
+ /* skip duplicated file which is mapped to different regions */
+ for (k = 0, exist = -1; k < idx; ++k) {
+ if (!strcmp(huges[k].path, tmp)) {
+ exist = k;
+ break;
+ }
+ }
+ if (exist >= 0)
+ continue;
+
if (idx >= max) {
PMD_DRV_LOG(ERR, "Exceed maximum of %d", max);
goto error;
}
+
huges[idx].addr = v_start;
- huges[idx].size = v_end - v_start;
+ huges[idx].size = v_end - v_start; /* To be corrected later */
snprintf(huges[idx].path, PATH_MAX, "%s", tmp);
idx++;
}
+ /* correct the size for files who have many regions */
+ for (k = 0; k < idx; ++k) {
+ if (stat(huges[k].path, &stats) < 0) {
+ PMD_DRV_LOG(ERR, "Failed to stat %s, %s\n",
+ huges[k].path, strerror(errno));
+ continue;
+ }
+ huges[k].size = stats.st_size;
+ PMD_DRV_LOG(INFO, "file %s, size %zx\n",
+ huges[k].path, huges[k].size);
+ }
+
fclose(f);
return idx;
static struct vhost_user_msg m;
-static const char * const vhost_msg_strings[] = {
- [VHOST_USER_SET_OWNER] = "VHOST_USER_SET_OWNER",
- [VHOST_USER_RESET_OWNER] = "VHOST_USER_RESET_OWNER",
- [VHOST_USER_SET_FEATURES] = "VHOST_USER_SET_FEATURES",
- [VHOST_USER_GET_FEATURES] = "VHOST_USER_GET_FEATURES",
- [VHOST_USER_SET_VRING_CALL] = "VHOST_USER_SET_VRING_CALL",
- [VHOST_USER_SET_VRING_NUM] = "VHOST_USER_SET_VRING_NUM",
- [VHOST_USER_SET_VRING_BASE] = "VHOST_USER_SET_VRING_BASE",
- [VHOST_USER_GET_VRING_BASE] = "VHOST_USER_GET_VRING_BASE",
- [VHOST_USER_SET_VRING_ADDR] = "VHOST_USER_SET_VRING_ADDR",
- [VHOST_USER_SET_VRING_KICK] = "VHOST_USER_SET_VRING_KICK",
- [VHOST_USER_SET_MEM_TABLE] = "VHOST_USER_SET_MEM_TABLE",
- [VHOST_USER_SET_VRING_ENABLE] = "VHOST_USER_SET_VRING_ENABLE",
- NULL,
+const char * const vhost_msg_strings[] = {
+ [VHOST_USER_SET_OWNER] = "VHOST_SET_OWNER",
+ [VHOST_USER_RESET_OWNER] = "VHOST_RESET_OWNER",
+ [VHOST_USER_SET_FEATURES] = "VHOST_SET_FEATURES",
+ [VHOST_USER_GET_FEATURES] = "VHOST_GET_FEATURES",
+ [VHOST_USER_SET_VRING_CALL] = "VHOST_SET_VRING_CALL",
+ [VHOST_USER_SET_VRING_NUM] = "VHOST_SET_VRING_NUM",
+ [VHOST_USER_SET_VRING_BASE] = "VHOST_SET_VRING_BASE",
+ [VHOST_USER_GET_VRING_BASE] = "VHOST_GET_VRING_BASE",
+ [VHOST_USER_SET_VRING_ADDR] = "VHOST_SET_VRING_ADDR",
+ [VHOST_USER_SET_VRING_KICK] = "VHOST_SET_VRING_KICK",
+ [VHOST_USER_SET_MEM_TABLE] = "VHOST_SET_MEM_TABLE",
+ [VHOST_USER_SET_VRING_ENABLE] = "VHOST_SET_VRING_ENABLE",
};
-int
-vhost_user_sock(int vhostfd, enum vhost_user_request req, void *arg)
+static int
+vhost_user_sock(struct virtio_user_dev *dev,
+ enum vhost_user_request req,
+ void *arg)
{
struct vhost_user_msg msg;
struct vhost_vring_file *file = 0;
int fds[VHOST_MEMORY_MAX_NREGIONS];
int fd_num = 0;
int i, len;
+ int vhostfd = dev->vhostfd;
RTE_SET_USED(m);
- RTE_SET_USED(vhost_msg_strings);
PMD_DRV_LOG(INFO, "%s", vhost_msg_strings[req]);
return 0;
}
+#define MAX_VIRTIO_USER_BACKLOG 1
+static int
+virtio_user_start_server(struct virtio_user_dev *dev, struct sockaddr_un *un)
+{
+ int ret;
+ int flag;
+ int fd = dev->listenfd;
+
+ ret = bind(fd, (struct sockaddr *)un, sizeof(*un));
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "failed to bind to %s: %s; remove it and try again\n",
+ dev->path, strerror(errno));
+ return -1;
+ }
+ ret = listen(fd, MAX_VIRTIO_USER_BACKLOG);
+ if (ret < 0)
+ return -1;
+
+ flag = fcntl(fd, F_GETFL);
+ fcntl(fd, F_SETFL, flag | O_NONBLOCK);
+
+ return 0;
+}
+
/**
* Set up environment to talk with a vhost user backend.
- * @param path
- * - The path to vhost user unix socket file.
*
* @return
- * - (-1) if fail to set up;
- * - (>=0) if successful, and it is the fd to vhostfd.
+ * - (-1) if fail;
+ * - (0) if succeed.
*/
-int
-vhost_user_setup(const char *path)
+static int
+vhost_user_setup(struct virtio_user_dev *dev)
{
int fd;
int flag;
memset(&un, 0, sizeof(un));
un.sun_family = AF_UNIX;
- snprintf(un.sun_path, sizeof(un.sun_path), "%s", path);
- if (connect(fd, (struct sockaddr *)&un, sizeof(un)) < 0) {
- PMD_DRV_LOG(ERR, "connect error, %s", strerror(errno));
- close(fd);
- return -1;
+ snprintf(un.sun_path, sizeof(un.sun_path), "%s", dev->path);
+
+ if (dev->is_server) {
+ dev->listenfd = fd;
+ if (virtio_user_start_server(dev, &un) < 0) {
+ PMD_DRV_LOG(ERR, "virtio-user startup fails in server mode");
+ close(fd);
+ return -1;
+ }
+ dev->vhostfd = -1;
+ } else {
+ if (connect(fd, (struct sockaddr *)&un, sizeof(un)) < 0) {
+ PMD_DRV_LOG(ERR, "connect error, %s", strerror(errno));
+ close(fd);
+ return -1;
+ }
+ dev->vhostfd = fd;
}
- return fd;
+ return 0;
}
-int
-vhost_user_enable_queue_pair(int vhostfd, uint16_t pair_idx, int enable)
+static int
+vhost_user_enable_queue_pair(struct virtio_user_dev *dev,
+ uint16_t pair_idx,
+ int enable)
{
int i;
.num = enable,
};
- if (vhost_user_sock(vhostfd,
- VHOST_USER_SET_VRING_ENABLE, &state))
+ if (vhost_user_sock(dev, VHOST_USER_SET_VRING_ENABLE, &state))
return -1;
}
return 0;
}
+
+struct virtio_user_backend_ops ops_user = {
+ .setup = vhost_user_setup,
+ .send_request = vhost_user_sock,
+ .enable_qp = vhost_user_enable_queue_pair
+};
git.droids-corp.org / dpdk.git / blobdiff