-/*-
- * 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 <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <rte_alarm.h>
+#include <rte_string_fns.h>
+#include <rte_eal_memconfig.h>
+
#include "vhost.h"
#include "virtio_user_dev.h"
#include "../virtio_ethdev.h"
+#define VIRTIO_USER_MEM_EVENT_CLB_NAME "virtio_user_mem_event_clb"
+
+const char * const virtio_user_backend_strings[] = {
+ [VIRTIO_USER_BACKEND_UNKNOWN] = "VIRTIO_USER_BACKEND_UNKNOWN",
+ [VIRTIO_USER_BACKEND_VHOST_USER] = "VHOST_USER",
+ [VIRTIO_USER_BACKEND_VHOST_KERNEL] = "VHOST_NET",
+ [VIRTIO_USER_BACKEND_VHOST_VDPA] = "VHOST_VDPA",
+};
+
static int
virtio_user_create_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
{
* pair.
*/
struct vhost_vring_file file;
+ int ret;
file.index = queue_sel;
file.fd = dev->callfds[queue_sel];
- dev->ops->send_request(dev, VHOST_USER_SET_VRING_CALL, &file);
+ ret = dev->ops->set_vring_call(dev, &file);
+ if (ret < 0) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to create queue %u", dev->path, queue_sel);
+ return -1;
+ }
return 0;
}
static int
virtio_user_kick_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
{
+ int ret;
struct vhost_vring_file file;
struct vhost_vring_state state;
struct vring *vring = &dev->vrings[queue_sel];
+ struct vring_packed *pq_vring = &dev->packed_vrings[queue_sel];
struct vhost_vring_addr addr = {
.index = queue_sel,
- .desc_user_addr = (uint64_t)(uintptr_t)vring->desc,
- .avail_user_addr = (uint64_t)(uintptr_t)vring->avail,
- .used_user_addr = (uint64_t)(uintptr_t)vring->used,
.log_guest_addr = 0,
.flags = 0, /* disable log */
};
+ if (dev->features & (1ULL << VIRTIO_F_RING_PACKED)) {
+ addr.desc_user_addr =
+ (uint64_t)(uintptr_t)pq_vring->desc;
+ addr.avail_user_addr =
+ (uint64_t)(uintptr_t)pq_vring->driver;
+ addr.used_user_addr =
+ (uint64_t)(uintptr_t)pq_vring->device;
+ } else {
+ addr.desc_user_addr = (uint64_t)(uintptr_t)vring->desc;
+ addr.avail_user_addr = (uint64_t)(uintptr_t)vring->avail;
+ addr.used_user_addr = (uint64_t)(uintptr_t)vring->used;
+ }
+
state.index = queue_sel;
state.num = vring->num;
- dev->ops->send_request(dev, VHOST_USER_SET_VRING_NUM, &state);
+ ret = dev->ops->set_vring_num(dev, &state);
+ if (ret < 0)
+ goto err;
state.index = queue_sel;
state.num = 0; /* no reservation */
- dev->ops->send_request(dev, VHOST_USER_SET_VRING_BASE, &state);
+ if (dev->features & (1ULL << VIRTIO_F_RING_PACKED))
+ state.num |= (1 << 15);
+ ret = dev->ops->set_vring_base(dev, &state);
+ if (ret < 0)
+ goto err;
- dev->ops->send_request(dev, VHOST_USER_SET_VRING_ADDR, &addr);
+ ret = dev->ops->set_vring_addr(dev, &addr);
+ if (ret < 0)
+ goto err;
/* Of all per virtqueue MSGs, make sure VHOST_USER_SET_VRING_KICK comes
* lastly because vhost depends on this msg to judge if
*/
file.index = queue_sel;
file.fd = dev->kickfds[queue_sel];
- dev->ops->send_request(dev, VHOST_USER_SET_VRING_KICK, &file);
+ ret = dev->ops->set_vring_kick(dev, &file);
+ if (ret < 0)
+ goto err;
return 0;
+err:
+ PMD_INIT_LOG(ERR, "(%s) Failed to kick queue %u", dev->path, queue_sel);
+
+ return -1;
}
static int
for (i = 0; i < dev->max_queue_pairs; ++i) {
queue_sel = 2 * i + VTNET_SQ_RQ_QUEUE_IDX;
if (fn(dev, queue_sel) < 0) {
- PMD_DRV_LOG(INFO, "setup rx vq fails: %u", i);
+ PMD_DRV_LOG(ERR, "(%s) setup rx vq %u failed", dev->path, i);
return -1;
}
}
for (i = 0; i < dev->max_queue_pairs; ++i) {
queue_sel = 2 * i + VTNET_SQ_TQ_QUEUE_IDX;
if (fn(dev, queue_sel) < 0) {
- PMD_DRV_LOG(INFO, "setup tx vq fails: %u", i);
+ PMD_DRV_LOG(INFO, "(%s) setup tx vq %u failed", dev->path, i);
return -1;
}
}
}
int
-virtio_user_start_device(struct virtio_user_dev *dev)
+virtio_user_dev_set_features(struct virtio_user_dev *dev)
{
uint64_t features;
- int ret;
+ int ret = -1;
+
+ pthread_mutex_lock(&dev->mutex);
/* Step 0: tell vhost to create queues */
if (virtio_user_queue_setup(dev, virtio_user_create_queue) < 0)
goto error;
- /* Step 1: set features */
features = dev->features;
+
/* Strip VIRTIO_NET_F_MAC, as MAC address is handled in vdev init */
features &= ~(1ull << VIRTIO_NET_F_MAC);
/* Strip VIRTIO_NET_F_CTRL_VQ, as devices do not really need to know */
features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
features &= ~(1ull << VIRTIO_NET_F_STATUS);
- ret = dev->ops->send_request(dev, VHOST_USER_SET_FEATURES, &features);
+ ret = dev->ops->set_features(dev, features);
if (ret < 0)
goto error;
- PMD_DRV_LOG(INFO, "set features: %" PRIx64, features);
+ PMD_DRV_LOG(INFO, "(%s) set features: 0x%" PRIx64, dev->path, features);
+error:
+ pthread_mutex_unlock(&dev->mutex);
+
+ return ret;
+}
+
+int
+virtio_user_start_device(struct virtio_user_dev *dev)
+{
+ int ret;
+
+ /*
+ * XXX workaround!
+ *
+ * We need to make sure that the locks will be
+ * taken in the correct order to avoid deadlocks.
+ *
+ * Before releasing this lock, this thread should
+ * not trigger any memory hotplug events.
+ *
+ * This is a temporary workaround, and should be
+ * replaced when we get proper supports from the
+ * memory subsystem in the future.
+ */
+ rte_mcfg_mem_read_lock();
+ pthread_mutex_lock(&dev->mutex);
/* Step 2: share memory regions */
- ret = dev->ops->send_request(dev, VHOST_USER_SET_MEM_TABLE, NULL);
+ ret = dev->ops->set_memory_table(dev);
if (ret < 0)
goto error;
/* Step 3: kick queues */
- if (virtio_user_queue_setup(dev, virtio_user_kick_queue) < 0)
+ ret = virtio_user_queue_setup(dev, virtio_user_kick_queue);
+ if (ret < 0)
goto error;
/* Step 4: enable queues
* we enable the 1st queue pair by default.
*/
- dev->ops->enable_qp(dev, 0, 1);
+ ret = dev->ops->enable_qp(dev, 0, 1);
+ if (ret < 0)
+ goto error;
+
+ dev->started = true;
+
+ pthread_mutex_unlock(&dev->mutex);
+ rte_mcfg_mem_read_unlock();
return 0;
error:
+ pthread_mutex_unlock(&dev->mutex);
+ rte_mcfg_mem_read_unlock();
+
+ PMD_INIT_LOG(ERR, "(%s) Failed to start device", dev->path);
+
/* TODO: free resource here or caller to check */
return -1;
}
int virtio_user_stop_device(struct virtio_user_dev *dev)
{
+ struct vhost_vring_state state;
uint32_t i;
+ int ret;
- for (i = 0; i < dev->max_queue_pairs; ++i)
- dev->ops->enable_qp(dev, i, 0);
+ pthread_mutex_lock(&dev->mutex);
+ if (!dev->started)
+ goto out;
+
+ for (i = 0; i < dev->max_queue_pairs; ++i) {
+ ret = dev->ops->enable_qp(dev, i, 0);
+ if (ret < 0)
+ goto err;
+ }
+
+ /* Stop the backend. */
+ for (i = 0; i < dev->max_queue_pairs * 2; ++i) {
+ state.index = i;
+ ret = dev->ops->get_vring_base(dev, &state);
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "(%s) get_vring_base failed, index=%u", dev->path, i);
+ goto err;
+ }
+ }
+
+ dev->started = false;
+
+out:
+ pthread_mutex_unlock(&dev->mutex);
return 0;
+err:
+ pthread_mutex_unlock(&dev->mutex);
+
+ PMD_INIT_LOG(ERR, "(%s) Failed to stop device", dev->path);
+
+ return -1;
}
-static inline void
-parse_mac(struct virtio_user_dev *dev, const char *mac)
+int
+virtio_user_dev_set_mac(struct virtio_user_dev *dev)
{
- int i, r;
- uint32_t tmp[ETHER_ADDR_LEN];
+ int ret = 0;
- if (!mac)
- return;
+ if (!(dev->device_features & (1ULL << VIRTIO_NET_F_MAC)))
+ return -ENOTSUP;
- r = sscanf(mac, "%x:%x:%x:%x:%x:%x", &tmp[0],
- &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]);
- if (r == ETHER_ADDR_LEN) {
- for (i = 0; i < ETHER_ADDR_LEN; ++i)
- dev->mac_addr[i] = (uint8_t)tmp[i];
- dev->mac_specified = 1;
- } else {
- /* ignore the wrong mac, use random mac */
- PMD_DRV_LOG(ERR, "wrong format of mac: %s", mac);
- }
+ if (!dev->ops->set_config)
+ return -ENOTSUP;
+
+ ret = dev->ops->set_config(dev, dev->mac_addr,
+ offsetof(struct virtio_net_config, mac),
+ RTE_ETHER_ADDR_LEN);
+ if (ret)
+ PMD_DRV_LOG(ERR, "(%s) Failed to set MAC address in device", dev->path);
+
+ return ret;
}
int
-is_vhost_user_by_type(const char *path)
+virtio_user_dev_get_mac(struct virtio_user_dev *dev)
{
- struct stat sb;
+ int ret = 0;
+
+ if (!(dev->device_features & (1ULL << VIRTIO_NET_F_MAC)))
+ return -ENOTSUP;
+
+ if (!dev->ops->get_config)
+ return -ENOTSUP;
- if (stat(path, &sb) == -1)
- return 0;
+ ret = dev->ops->get_config(dev, dev->mac_addr,
+ offsetof(struct virtio_net_config, mac),
+ RTE_ETHER_ADDR_LEN);
+ if (ret)
+ PMD_DRV_LOG(ERR, "(%s) Failed to get MAC address from device", dev->path);
- return S_ISSOCK(sb.st_mode);
+ return ret;
+}
+
+static void
+virtio_user_dev_init_mac(struct virtio_user_dev *dev, const char *mac)
+{
+ struct rte_ether_addr cmdline_mac;
+ char buf[RTE_ETHER_ADDR_FMT_SIZE];
+ int ret;
+
+ if (mac && rte_ether_unformat_addr(mac, &cmdline_mac) == 0) {
+ /*
+ * MAC address was passed from command-line, try to store
+ * it in the device if it supports it. Otherwise try to use
+ * the device one.
+ */
+ memcpy(dev->mac_addr, &cmdline_mac, RTE_ETHER_ADDR_LEN);
+ dev->mac_specified = 1;
+
+ /* Setting MAC may fail, continue to get the device one in this case */
+ virtio_user_dev_set_mac(dev);
+ ret = virtio_user_dev_get_mac(dev);
+ if (ret == -ENOTSUP)
+ goto out;
+
+ if (memcmp(&cmdline_mac, dev->mac_addr, RTE_ETHER_ADDR_LEN))
+ PMD_DRV_LOG(INFO, "(%s) Device MAC update failed", dev->path);
+ } else {
+ ret = virtio_user_dev_get_mac(dev);
+ if (ret) {
+ PMD_DRV_LOG(ERR, "(%s) No valid MAC in devargs or device, use random",
+ dev->path);
+ return;
+ }
+
+ dev->mac_specified = 1;
+ }
+out:
+ rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE,
+ (struct rte_ether_addr *)dev->mac_addr);
+ PMD_DRV_LOG(INFO, "(%s) MAC %s specified", dev->path, buf);
}
static int
int callfd;
int kickfd;
- for (i = 0; i < VIRTIO_MAX_VIRTQUEUES; ++i) {
- if (i >= dev->max_queue_pairs * 2) {
- dev->kickfds[i] = -1;
- dev->callfds[i] = -1;
- continue;
- }
-
+ for (i = 0; i < dev->max_queue_pairs * 2; i++) {
/* May use invalid flag, but some backend uses kickfd and
* callfd as criteria to judge if dev is alive. so finally we
* use real event_fd.
*/
callfd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
if (callfd < 0) {
- PMD_DRV_LOG(ERR, "callfd error, %s", strerror(errno));
- break;
+ PMD_DRV_LOG(ERR, "(%s) callfd error, %s", dev->path, strerror(errno));
+ goto err;
}
kickfd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
if (kickfd < 0) {
- PMD_DRV_LOG(ERR, "kickfd error, %s", strerror(errno));
- break;
+ close(callfd);
+ PMD_DRV_LOG(ERR, "(%s) kickfd error, %s", dev->path, strerror(errno));
+ goto err;
}
dev->callfds[i] = callfd;
dev->kickfds[i] = kickfd;
}
- if (i < VIRTIO_MAX_VIRTQUEUES) {
- for (j = 0; j <= i; ++j) {
- close(dev->callfds[j]);
+ return 0;
+err:
+ for (j = 0; j < i; j++) {
+ if (dev->kickfds[j] >= 0) {
close(dev->kickfds[j]);
+ dev->kickfds[j] = -1;
+ }
+ if (dev->callfds[j] >= 0) {
+ close(dev->callfds[j]);
+ dev->callfds[j] = -1;
}
-
- return -1;
}
- return 0;
+ return -1;
+}
+
+static void
+virtio_user_dev_uninit_notify(struct virtio_user_dev *dev)
+{
+ uint32_t i;
+
+ for (i = 0; i < dev->max_queue_pairs * 2; ++i) {
+ if (dev->kickfds[i] >= 0) {
+ close(dev->kickfds[i]);
+ dev->kickfds[i] = -1;
+ }
+ if (dev->callfds[i] >= 0) {
+ close(dev->callfds[i]);
+ dev->callfds[i] = -1;
+ }
+ }
}
static int
virtio_user_fill_intr_handle(struct virtio_user_dev *dev)
{
uint32_t i;
- struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->port_id];
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
if (!eth_dev->intr_handle) {
eth_dev->intr_handle = malloc(sizeof(*eth_dev->intr_handle));
if (!eth_dev->intr_handle) {
- PMD_DRV_LOG(ERR, "fail to allocate intr_handle");
+ PMD_DRV_LOG(ERR, "(%s) failed to allocate intr_handle", dev->path);
return -1;
}
memset(eth_dev->intr_handle, 0, sizeof(*eth_dev->intr_handle));
}
for (i = 0; i < dev->max_queue_pairs; ++i)
- eth_dev->intr_handle->efds[i] = dev->callfds[i];
+ eth_dev->intr_handle->efds[i] = dev->callfds[2 * i];
eth_dev->intr_handle->nb_efd = dev->max_queue_pairs;
eth_dev->intr_handle->max_intr = dev->max_queue_pairs + 1;
eth_dev->intr_handle->type = RTE_INTR_HANDLE_VDEV;
- if (dev->vhostfd >= 0)
- eth_dev->intr_handle->fd = dev->vhostfd;
+ /* For virtio vdev, no need to read counter for clean */
+ eth_dev->intr_handle->efd_counter_size = 0;
+ eth_dev->intr_handle->fd = dev->ops->get_intr_fd(dev);
return 0;
}
-static int
-virtio_user_dev_setup(struct virtio_user_dev *dev)
+static void
+virtio_user_mem_event_cb(enum rte_mem_event type __rte_unused,
+ const void *addr,
+ size_t len __rte_unused,
+ void *arg)
{
- uint32_t q;
+ struct virtio_user_dev *dev = arg;
+ struct rte_memseg_list *msl;
+ uint16_t i;
+ int ret = 0;
- dev->vhostfd = -1;
- dev->vhostfds = NULL;
- dev->tapfds = NULL;
+ /* ignore externally allocated memory */
+ msl = rte_mem_virt2memseg_list(addr);
+ if (msl->external)
+ return;
- if (is_vhost_user_by_type(dev->path)) {
- dev->ops = &ops_user;
- } else {
- dev->ops = &ops_kernel;
+ pthread_mutex_lock(&dev->mutex);
- dev->vhostfds = malloc(dev->max_queue_pairs * sizeof(int));
- dev->tapfds = malloc(dev->max_queue_pairs * sizeof(int));
- if (!dev->vhostfds || !dev->tapfds) {
- PMD_INIT_LOG(ERR, "Failed to malloc");
- return -1;
- }
+ if (dev->started == false)
+ goto exit;
- for (q = 0; q < dev->max_queue_pairs; ++q) {
- dev->vhostfds[q] = -1;
- dev->tapfds[q] = -1;
+ /* Step 1: pause the active queues */
+ for (i = 0; i < dev->queue_pairs; i++) {
+ ret = dev->ops->enable_qp(dev, i, 0);
+ if (ret < 0)
+ goto exit;
+ }
+
+ /* Step 2: update memory regions */
+ ret = dev->ops->set_memory_table(dev);
+ if (ret < 0)
+ goto exit;
+
+ /* Step 3: resume the active queues */
+ for (i = 0; i < dev->queue_pairs; i++) {
+ ret = dev->ops->enable_qp(dev, i, 1);
+ if (ret < 0)
+ goto exit;
+ }
+
+exit:
+ pthread_mutex_unlock(&dev->mutex);
+
+ if (ret < 0)
+ PMD_DRV_LOG(ERR, "(%s) Failed to update memory table", dev->path);
+}
+
+static int
+virtio_user_dev_setup(struct virtio_user_dev *dev)
+{
+ if (dev->is_server) {
+ if (dev->backend_type != VIRTIO_USER_BACKEND_VHOST_USER) {
+ PMD_DRV_LOG(ERR, "Server mode only supports vhost-user!");
+ return -1;
}
}
- if (dev->ops->setup(dev) < 0)
+ switch (dev->backend_type) {
+ case VIRTIO_USER_BACKEND_VHOST_USER:
+ dev->ops = &virtio_ops_user;
+ break;
+ case VIRTIO_USER_BACKEND_VHOST_KERNEL:
+ dev->ops = &virtio_ops_kernel;
+ break;
+ case VIRTIO_USER_BACKEND_VHOST_VDPA:
+ dev->ops = &virtio_ops_vdpa;
+ break;
+ default:
+ PMD_DRV_LOG(ERR, "(%s) Unknown backend type", dev->path);
return -1;
+ }
- if (virtio_user_dev_init_notify(dev) < 0)
+ if (dev->ops->setup(dev) < 0) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to setup backend", dev->path);
return -1;
+ }
- if (virtio_user_fill_intr_handle(dev) < 0)
- return -1;
+ if (virtio_user_dev_init_notify(dev) < 0) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to init notifiers", dev->path);
+ goto destroy;
+ }
+
+ if (virtio_user_fill_intr_handle(dev) < 0) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to init interrupt handler", dev->path);
+ goto uninit;
+ }
return 0;
+
+uninit:
+ virtio_user_dev_uninit_notify(dev);
+destroy:
+ dev->ops->destroy(dev);
+
+ return -1;
}
/* Use below macro to filter features from vhost backend */
1ULL << VIRTIO_NET_F_GUEST_CSUM | \
1ULL << VIRTIO_NET_F_GUEST_TSO4 | \
1ULL << VIRTIO_NET_F_GUEST_TSO6 | \
- 1ULL << VIRTIO_F_VERSION_1)
+ 1ULL << VIRTIO_F_IN_ORDER | \
+ 1ULL << VIRTIO_F_VERSION_1 | \
+ 1ULL << VIRTIO_F_RING_PACKED)
int
virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues,
- int cq, int queue_size, const char *mac, char **ifname)
+ int cq, int queue_size, const char *mac, char **ifname,
+ int server, int mrg_rxbuf, int in_order, int packed_vq,
+ enum virtio_user_backend_type backend_type)
{
- snprintf(dev->path, PATH_MAX, "%s", path);
+ uint64_t backend_features;
+ int i;
+
+ pthread_mutex_init(&dev->mutex, NULL);
+ strlcpy(dev->path, path, PATH_MAX);
+
+ for (i = 0; i < VIRTIO_MAX_VIRTQUEUES; i++) {
+ dev->kickfds[i] = -1;
+ dev->callfds[i] = -1;
+ }
+
+ dev->started = 0;
dev->max_queue_pairs = queues;
dev->queue_pairs = 1; /* mq disabled by default */
dev->queue_size = queue_size;
+ dev->is_server = server;
dev->mac_specified = 0;
- parse_mac(dev, mac);
+ dev->frontend_features = 0;
+ dev->unsupported_features = 0;
+ dev->backend_type = backend_type;
if (*ifname) {
dev->ifname = *ifname;
}
if (virtio_user_dev_setup(dev) < 0) {
- PMD_INIT_LOG(ERR, "backend set up fails");
+ PMD_INIT_LOG(ERR, "(%s) backend set up fails", dev->path);
return -1;
}
- if (dev->ops->send_request(dev, VHOST_USER_SET_OWNER, NULL) < 0) {
- PMD_INIT_LOG(ERR, "set_owner fails: %s", strerror(errno));
+
+ if (dev->ops->set_owner(dev) < 0) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to set backend owner", dev->path);
+ return -1;
+ }
+
+ if (dev->ops->get_backend_features(&backend_features) < 0) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to get backend features", dev->path);
return -1;
}
- if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES,
- &dev->device_features) < 0) {
- PMD_INIT_LOG(ERR, "get_features failed: %s", strerror(errno));
+ dev->unsupported_features = ~(VIRTIO_USER_SUPPORTED_FEATURES | backend_features);
+
+ if (dev->ops->get_features(dev, &dev->device_features) < 0) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to get device features", dev->path);
return -1;
}
+
+ virtio_user_dev_init_mac(dev, mac);
+
+ if (!mrg_rxbuf)
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_MRG_RXBUF);
+
+ if (!in_order)
+ dev->unsupported_features |= (1ull << VIRTIO_F_IN_ORDER);
+
+ if (!packed_vq)
+ dev->unsupported_features |= (1ull << VIRTIO_F_RING_PACKED);
+
if (dev->mac_specified)
- dev->device_features |= (1ull << VIRTIO_NET_F_MAC);
+ dev->frontend_features |= (1ull << VIRTIO_NET_F_MAC);
+ else
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_MAC);
if (cq) {
/* device does not really need to know anything about CQ,
* so if necessary, we just claim to support CQ
*/
- dev->device_features |= (1ull << VIRTIO_NET_F_CTRL_VQ);
+ dev->frontend_features |= (1ull << VIRTIO_NET_F_CTRL_VQ);
} else {
- dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
- /* Also disable features depends on VIRTIO_NET_F_CTRL_VQ */
- dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_RX);
- dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_VLAN);
- dev->device_features &= ~(1ull << VIRTIO_NET_F_GUEST_ANNOUNCE);
- dev->device_features &= ~(1ull << VIRTIO_NET_F_MQ);
- dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_VQ);
+ /* Also disable features that depend on VIRTIO_NET_F_CTRL_VQ */
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_RX);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_VLAN);
+ dev->unsupported_features |=
+ (1ull << VIRTIO_NET_F_GUEST_ANNOUNCE);
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_MQ);
+ dev->unsupported_features |=
+ (1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
}
/* The backend will not report this feature, we add it explicitly */
- if (is_vhost_user_by_type(dev->path))
- dev->device_features |= (1ull << VIRTIO_NET_F_STATUS);
+ if (dev->backend_type == VIRTIO_USER_BACKEND_VHOST_USER)
+ dev->frontend_features |= (1ull << VIRTIO_NET_F_STATUS);
- dev->device_features &= VIRTIO_USER_SUPPORTED_FEATURES;
+ dev->frontend_features &= ~dev->unsupported_features;
+ dev->device_features &= ~dev->unsupported_features;
+
+ if (rte_mem_event_callback_register(VIRTIO_USER_MEM_EVENT_CLB_NAME,
+ virtio_user_mem_event_cb, dev)) {
+ if (rte_errno != ENOTSUP) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to register mem event callback",
+ dev->path);
+ return -1;
+ }
+ }
return 0;
}
void
virtio_user_dev_uninit(struct virtio_user_dev *dev)
{
- uint32_t i;
-
- virtio_user_stop_device(dev);
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
- for (i = 0; i < dev->max_queue_pairs * 2; ++i) {
- close(dev->callfds[i]);
- close(dev->kickfds[i]);
+ if (eth_dev->intr_handle) {
+ free(eth_dev->intr_handle);
+ eth_dev->intr_handle = NULL;
}
- close(dev->vhostfd);
+ virtio_user_stop_device(dev);
- if (dev->vhostfds) {
- for (i = 0; i < dev->max_queue_pairs; ++i)
- close(dev->vhostfds[i]);
- free(dev->vhostfds);
- free(dev->tapfds);
- }
+ rte_mem_event_callback_unregister(VIRTIO_USER_MEM_EVENT_CLB_NAME, dev);
+
+ virtio_user_dev_uninit_notify(dev);
free(dev->ifname);
+
+ if (dev->is_server)
+ unlink(dev->path);
+
+ dev->ops->destroy(dev);
}
-static uint8_t
+uint8_t
virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs)
{
uint16_t i;
uint8_t ret = 0;
if (q_pairs > dev->max_queue_pairs) {
- PMD_INIT_LOG(ERR, "multi-q config %u, but only %u supported",
- q_pairs, dev->max_queue_pairs);
+ PMD_INIT_LOG(ERR, "(%s) multi-q config %u, but only %u supported",
+ dev->path, q_pairs, dev->max_queue_pairs);
return -1;
}
queues = *(uint16_t *)(uintptr_t)vring->desc[idx_data].addr;
status = virtio_user_handle_mq(dev, queues);
+ } else if (hdr->class == VIRTIO_NET_CTRL_RX ||
+ hdr->class == VIRTIO_NET_CTRL_MAC ||
+ hdr->class == VIRTIO_NET_CTRL_VLAN) {
+ status = 0;
}
/* Update status */
return n_descs;
}
+static inline int
+desc_is_avail(struct vring_packed_desc *desc, bool wrap_counter)
+{
+ uint16_t flags = __atomic_load_n(&desc->flags, __ATOMIC_ACQUIRE);
+
+ return wrap_counter == !!(flags & VRING_PACKED_DESC_F_AVAIL) &&
+ wrap_counter != !!(flags & VRING_PACKED_DESC_F_USED);
+}
+
+static uint32_t
+virtio_user_handle_ctrl_msg_packed(struct virtio_user_dev *dev,
+ struct vring_packed *vring,
+ uint16_t idx_hdr)
+{
+ struct virtio_net_ctrl_hdr *hdr;
+ virtio_net_ctrl_ack status = ~0;
+ uint16_t idx_data, idx_status;
+ /* initialize to one, header is first */
+ uint32_t n_descs = 1;
+
+ /* locate desc for header, data, and status */
+ idx_data = idx_hdr + 1;
+ if (idx_data >= dev->queue_size)
+ idx_data -= dev->queue_size;
+
+ n_descs++;
+
+ idx_status = idx_data;
+ while (vring->desc[idx_status].flags & VRING_DESC_F_NEXT) {
+ idx_status++;
+ if (idx_status >= dev->queue_size)
+ idx_status -= dev->queue_size;
+ n_descs++;
+ }
+
+ hdr = (void *)(uintptr_t)vring->desc[idx_hdr].addr;
+ if (hdr->class == VIRTIO_NET_CTRL_MQ &&
+ hdr->cmd == VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET) {
+ uint16_t queues;
+
+ queues = *(uint16_t *)(uintptr_t)
+ vring->desc[idx_data].addr;
+ status = virtio_user_handle_mq(dev, queues);
+ } else if (hdr->class == VIRTIO_NET_CTRL_RX ||
+ hdr->class == VIRTIO_NET_CTRL_MAC ||
+ hdr->class == VIRTIO_NET_CTRL_VLAN) {
+ status = 0;
+ }
+
+ /* Update status */
+ *(virtio_net_ctrl_ack *)(uintptr_t)
+ vring->desc[idx_status].addr = status;
+
+ /* Update used descriptor */
+ vring->desc[idx_hdr].id = vring->desc[idx_status].id;
+ vring->desc[idx_hdr].len = sizeof(status);
+
+ return n_descs;
+}
+
+void
+virtio_user_handle_cq_packed(struct virtio_user_dev *dev, uint16_t queue_idx)
+{
+ struct virtio_user_queue *vq = &dev->packed_queues[queue_idx];
+ struct vring_packed *vring = &dev->packed_vrings[queue_idx];
+ uint16_t n_descs, flags;
+
+ /* Perform a load-acquire barrier in desc_is_avail to
+ * enforce the ordering between desc flags and desc
+ * content.
+ */
+ while (desc_is_avail(&vring->desc[vq->used_idx],
+ vq->used_wrap_counter)) {
+
+ n_descs = virtio_user_handle_ctrl_msg_packed(dev, vring,
+ vq->used_idx);
+
+ flags = VRING_DESC_F_WRITE;
+ if (vq->used_wrap_counter)
+ flags |= VRING_PACKED_DESC_F_AVAIL_USED;
+
+ __atomic_store_n(&vring->desc[vq->used_idx].flags, flags,
+ __ATOMIC_RELEASE);
+
+ vq->used_idx += n_descs;
+ if (vq->used_idx >= dev->queue_size) {
+ vq->used_idx -= dev->queue_size;
+ vq->used_wrap_counter ^= 1;
+ }
+ }
+}
+
void
virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx)
{
struct vring *vring = &dev->vrings[queue_idx];
/* Consume avail ring, using used ring idx as first one */
- while (vring->used->idx != vring->avail->idx) {
- avail_idx = (vring->used->idx) & (vring->num - 1);
+ while (__atomic_load_n(&vring->used->idx, __ATOMIC_RELAXED)
+ != vring->avail->idx) {
+ avail_idx = __atomic_load_n(&vring->used->idx, __ATOMIC_RELAXED)
+ & (vring->num - 1);
desc_idx = vring->avail->ring[avail_idx];
n_descs = virtio_user_handle_ctrl_msg(dev, vring, desc_idx);
/* Update used ring */
uep = &vring->used->ring[avail_idx];
- uep->id = avail_idx;
+ uep->id = desc_idx;
uep->len = n_descs;
- vring->used->idx++;
+ __atomic_add_fetch(&vring->used->idx, 1, __ATOMIC_RELAXED);
+ }
+}
+
+int
+virtio_user_dev_set_status(struct virtio_user_dev *dev, uint8_t status)
+{
+ int ret;
+
+ pthread_mutex_lock(&dev->mutex);
+ dev->status = status;
+ ret = dev->ops->set_status(dev, status);
+ if (ret && ret != -ENOTSUP)
+ PMD_INIT_LOG(ERR, "(%s) Failed to set backend status", dev->path);
+
+ pthread_mutex_unlock(&dev->mutex);
+ return ret;
+}
+
+int
+virtio_user_dev_update_status(struct virtio_user_dev *dev)
+{
+ int ret;
+ uint8_t status;
+
+ pthread_mutex_lock(&dev->mutex);
+
+ ret = dev->ops->get_status(dev, &status);
+ if (!ret) {
+ dev->status = status;
+ PMD_INIT_LOG(DEBUG, "Updated Device Status(0x%08x):\n"
+ "\t-RESET: %u\n"
+ "\t-ACKNOWLEDGE: %u\n"
+ "\t-DRIVER: %u\n"
+ "\t-DRIVER_OK: %u\n"
+ "\t-FEATURES_OK: %u\n"
+ "\t-DEVICE_NEED_RESET: %u\n"
+ "\t-FAILED: %u",
+ dev->status,
+ (dev->status == VIRTIO_CONFIG_STATUS_RESET),
+ !!(dev->status & VIRTIO_CONFIG_STATUS_ACK),
+ !!(dev->status & VIRTIO_CONFIG_STATUS_DRIVER),
+ !!(dev->status & VIRTIO_CONFIG_STATUS_DRIVER_OK),
+ !!(dev->status & VIRTIO_CONFIG_STATUS_FEATURES_OK),
+ !!(dev->status & VIRTIO_CONFIG_STATUS_DEV_NEED_RESET),
+ !!(dev->status & VIRTIO_CONFIG_STATUS_FAILED));
+ } else if (ret != -ENOTSUP) {
+ PMD_INIT_LOG(ERR, "(%s) Failed to get backend status", dev->path);
+ }
+
+ pthread_mutex_unlock(&dev->mutex);
+ return ret;
+}
+
+int
+virtio_user_dev_update_link_state(struct virtio_user_dev *dev)
+{
+ if (dev->ops->update_link_state)
+ return dev->ops->update_link_state(dev);
+
+ return 0;
+}
+
+static void
+virtio_user_dev_reset_queues_packed(struct rte_eth_dev *eth_dev)
+{
+ struct virtio_user_dev *dev = eth_dev->data->dev_private;
+ struct virtio_hw *hw = &dev->hw;
+ struct virtnet_rx *rxvq;
+ struct virtnet_tx *txvq;
+ uint16_t i;
+
+ /* Add lock to avoid queue contention. */
+ rte_spinlock_lock(&hw->state_lock);
+ hw->started = 0;
+
+ /*
+ * Waiting for datapath to complete before resetting queues.
+ * 1 ms should be enough for the ongoing Tx/Rx function to finish.
+ */
+ rte_delay_ms(1);
+
+ /* Vring reset for each Tx queue and Rx queue. */
+ for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
+ rxvq = eth_dev->data->rx_queues[i];
+ virtqueue_rxvq_reset_packed(virtnet_rxq_to_vq(rxvq));
+ virtio_dev_rx_queue_setup_finish(eth_dev, i);
+ }
+
+ for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
+ txvq = eth_dev->data->tx_queues[i];
+ virtqueue_txvq_reset_packed(virtnet_txq_to_vq(txvq));
+ }
+
+ hw->started = 1;
+ rte_spinlock_unlock(&hw->state_lock);
+}
+
+void
+virtio_user_dev_delayed_disconnect_handler(void *param)
+{
+ struct virtio_user_dev *dev = param;
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
+
+ if (rte_intr_disable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt disable failed");
+ return;
}
+ PMD_DRV_LOG(DEBUG, "Unregistering intr fd: %d",
+ eth_dev->intr_handle->fd);
+ if (rte_intr_callback_unregister(eth_dev->intr_handle,
+ virtio_interrupt_handler,
+ eth_dev) != 1)
+ PMD_DRV_LOG(ERR, "interrupt unregister failed");
+
+ if (dev->is_server) {
+ if (dev->ops->server_disconnect)
+ dev->ops->server_disconnect(dev);
+
+ eth_dev->intr_handle->fd = dev->ops->get_intr_fd(dev);
+
+ PMD_DRV_LOG(DEBUG, "Registering intr fd: %d",
+ eth_dev->intr_handle->fd);
+
+ if (rte_intr_callback_register(eth_dev->intr_handle,
+ virtio_interrupt_handler,
+ eth_dev))
+ PMD_DRV_LOG(ERR, "interrupt register failed");
+
+ if (rte_intr_enable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt enable failed");
+ return;
+ }
+ }
+}
+
+static void
+virtio_user_dev_delayed_intr_reconfig_handler(void *param)
+{
+ struct virtio_user_dev *dev = param;
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
+
+ PMD_DRV_LOG(DEBUG, "Unregistering intr fd: %d",
+ eth_dev->intr_handle->fd);
+
+ if (rte_intr_callback_unregister(eth_dev->intr_handle,
+ virtio_interrupt_handler,
+ eth_dev) != 1)
+ PMD_DRV_LOG(ERR, "interrupt unregister failed");
+
+ eth_dev->intr_handle->fd = dev->ops->get_intr_fd(dev);
+
+ PMD_DRV_LOG(DEBUG, "Registering intr fd: %d", eth_dev->intr_handle->fd);
+
+ if (rte_intr_callback_register(eth_dev->intr_handle,
+ virtio_interrupt_handler, eth_dev))
+ PMD_DRV_LOG(ERR, "interrupt register failed");
+
+ if (rte_intr_enable(eth_dev->intr_handle) < 0)
+ PMD_DRV_LOG(ERR, "interrupt enable failed");
+}
+
+int
+virtio_user_dev_server_reconnect(struct virtio_user_dev *dev)
+{
+ int ret, old_status;
+ struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
+ struct virtio_hw *hw = &dev->hw;
+
+ if (!dev->ops->server_reconnect) {
+ PMD_DRV_LOG(ERR, "(%s) Missing server reconnect callback", dev->path);
+ return -1;
+ }
+
+ if (dev->ops->server_reconnect(dev)) {
+ PMD_DRV_LOG(ERR, "(%s) Reconnect callback call failed", dev->path);
+ return -1;
+ }
+
+ old_status = dev->status;
+
+ virtio_reset(hw);
+
+ virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
+
+ virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
+
+ if (dev->ops->get_features(dev, &dev->device_features) < 0) {
+ PMD_INIT_LOG(ERR, "get_features failed: %s",
+ strerror(errno));
+ return -1;
+ }
+
+ /* unmask vhost-user unsupported features */
+ dev->device_features &= ~(dev->unsupported_features);
+
+ dev->features &= (dev->device_features | dev->frontend_features);
+
+ /* For packed ring, resetting queues is required in reconnection. */
+ if (virtio_with_packed_queue(hw) &&
+ (old_status & VIRTIO_CONFIG_STATUS_DRIVER_OK)) {
+ PMD_INIT_LOG(NOTICE, "Packets on the fly will be dropped"
+ " when packed ring reconnecting.");
+ virtio_user_dev_reset_queues_packed(eth_dev);
+ }
+
+ virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
+
+ /* Start the device */
+ virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER_OK);
+ if (!dev->started)
+ return -1;
+
+ if (dev->queue_pairs > 1) {
+ ret = virtio_user_handle_mq(dev, dev->queue_pairs);
+ if (ret != 0) {
+ PMD_INIT_LOG(ERR, "Fails to enable multi-queue pairs!");
+ return -1;
+ }
+ }
+ if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
+ if (rte_intr_disable(eth_dev->intr_handle) < 0) {
+ PMD_DRV_LOG(ERR, "interrupt disable failed");
+ return -1;
+ }
+ /*
+ * This function can be called from the interrupt handler, so
+ * we can't unregister interrupt handler here. Setting
+ * alarm to do that later.
+ */
+ rte_eal_alarm_set(1,
+ virtio_user_dev_delayed_intr_reconfig_handler,
+ (void *)dev);
+ }
+ PMD_INIT_LOG(NOTICE, "server mode virtio-user reconnection succeeds!");
+ return 0;
}
git.droids-corp.org / dpdk.git / blobdiff