#include "vhost.h"
#include "vhost_user.h"
+#define VIRTIO_MIN_MTU 68
+#define VIRTIO_MAX_MTU 65535
+
static const char *vhost_message_str[VHOST_USER_MAX] = {
[VHOST_USER_NONE] = "VHOST_USER_NONE",
[VHOST_USER_GET_FEATURES] = "VHOST_USER_GET_FEATURES",
[VHOST_USER_GET_QUEUE_NUM] = "VHOST_USER_GET_QUEUE_NUM",
[VHOST_USER_SET_VRING_ENABLE] = "VHOST_USER_SET_VRING_ENABLE",
[VHOST_USER_SEND_RARP] = "VHOST_USER_SEND_RARP",
+ [VHOST_USER_NET_SET_MTU] = "VHOST_USER_NET_SET_MTU",
};
static uint64_t
free_mem_region(struct virtio_net *dev)
{
uint32_t i;
- struct virtio_memory_region *reg;
+ struct rte_vhost_mem_region *reg;
if (!dev || !dev->mem)
return;
{
if (dev->flags & VIRTIO_DEV_RUNNING) {
dev->flags &= ~VIRTIO_DEV_RUNNING;
- notify_ops->destroy_device(dev->vid);
+ dev->notify_ops->destroy_device(dev->vid);
}
cleanup_device(dev, 0);
* The features that we support are requested.
*/
static uint64_t
-vhost_user_get_features(void)
+vhost_user_get_features(struct virtio_net *dev)
{
- return VHOST_FEATURES;
+ uint64_t features = 0;
+
+ rte_vhost_driver_get_features(dev->ifname, &features);
+ return features;
}
/*
static int
vhost_user_set_features(struct virtio_net *dev, uint64_t features)
{
- if (features & ~VHOST_FEATURES)
+ uint64_t vhost_features = 0;
+
+ rte_vhost_driver_get_features(dev->ifname, &vhost_features);
+ if (features & ~vhost_features)
return -1;
+ if ((dev->flags & VIRTIO_DEV_RUNNING) && dev->features != features) {
+ if (dev->notify_ops->features_changed)
+ dev->notify_ops->features_changed(dev->vid, features);
+ }
+
dev->features = features;
if (dev->features &
((1 << VIRTIO_NET_F_MRG_RXBUF) | (1ULL << VIRTIO_F_VERSION_1))) {
struct vhost_virtqueue *old_vq, *vq;
int ret;
- /*
- * vq is allocated on pairs, we should try to do realloc
- * on first queue of one queue pair only.
- */
- if (index % VIRTIO_QNUM != 0)
- return dev;
+ enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM};
old_dev = dev;
vq = old_vq = dev->virtqueue[index];
if (oldnode != newnode) {
RTE_LOG(INFO, VHOST_CONFIG,
"reallocate vq from %d to %d node\n", oldnode, newnode);
- vq = rte_malloc_socket(NULL, sizeof(*vq) * VIRTIO_QNUM, 0,
- newnode);
+ vq = rte_malloc_socket(NULL, sizeof(*vq), 0, newnode);
if (!vq)
return dev;
out:
dev->virtqueue[index] = vq;
- dev->virtqueue[index + 1] = vq + 1;
vhost_devices[dev->vid] = dev;
return dev;
static uint64_t
qva_to_vva(struct virtio_net *dev, uint64_t qva)
{
- struct virtio_memory_region *reg;
+ struct rte_vhost_mem_region *reg;
uint32_t i;
/* Find the region where the address lives. */
}
static void
-add_guest_pages(struct virtio_net *dev, struct virtio_memory_region *reg,
+add_guest_pages(struct virtio_net *dev, struct rte_vhost_mem_region *reg,
uint64_t page_size)
{
uint64_t reg_size = reg->size;
vhost_user_set_mem_table(struct virtio_net *dev, struct VhostUserMsg *pmsg)
{
struct VhostUserMemory memory = pmsg->payload.memory;
- struct virtio_memory_region *reg;
+ struct rte_vhost_mem_region *reg;
void *mmap_addr;
uint64_t mmap_size;
uint64_t mmap_offset;
uint32_t i;
int fd;
- /* Remove from the data plane. */
- if (dev->flags & VIRTIO_DEV_RUNNING) {
- dev->flags &= ~VIRTIO_DEV_RUNNING;
- notify_ops->destroy_device(dev->vid);
- }
-
if (dev->mem) {
free_mem_region(dev);
rte_free(dev->mem);
sizeof(struct guest_page));
}
- dev->mem = rte_zmalloc("vhost-mem-table", sizeof(struct virtio_memory) +
- sizeof(struct virtio_memory_region) * memory.nregions, 0);
+ dev->mem = rte_zmalloc("vhost-mem-table", sizeof(struct rte_vhost_memory) +
+ sizeof(struct rte_vhost_mem_region) * memory.nregions, 0);
if (dev->mem == NULL) {
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) failed to allocate memory for dev->mem\n",
static int
virtio_is_ready(struct virtio_net *dev)
{
- struct vhost_virtqueue *rvq, *tvq;
+ struct vhost_virtqueue *vq;
uint32_t i;
- for (i = 0; i < dev->virt_qp_nb; i++) {
- rvq = dev->virtqueue[i * VIRTIO_QNUM + VIRTIO_RXQ];
- tvq = dev->virtqueue[i * VIRTIO_QNUM + VIRTIO_TXQ];
+ if (dev->nr_vring == 0)
+ return 0;
- if (!vq_is_ready(rvq) || !vq_is_ready(tvq)) {
- RTE_LOG(INFO, VHOST_CONFIG,
- "virtio is not ready for processing.\n");
+ for (i = 0; i < dev->nr_vring; i++) {
+ vq = dev->virtqueue[i];
+
+ if (!vq_is_ready(vq))
return 0;
- }
}
RTE_LOG(INFO, VHOST_CONFIG,
{
struct vhost_vring_file file;
struct vhost_virtqueue *vq;
- uint32_t cur_qp_idx;
file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
RTE_LOG(INFO, VHOST_CONFIG,
"vring call idx:%d file:%d\n", file.index, file.fd);
- /*
- * FIXME: VHOST_SET_VRING_CALL is the first per-vring message
- * we get, so we do vring queue pair allocation here.
- */
- cur_qp_idx = file.index / VIRTIO_QNUM;
- if (cur_qp_idx + 1 > dev->virt_qp_nb) {
- if (alloc_vring_queue_pair(dev, cur_qp_idx) < 0)
- return;
- }
-
vq = dev->virtqueue[file.index];
- assert(vq != NULL);
-
if (vq->callfd >= 0)
close(vq->callfd);
vq->callfd = file.fd;
}
-/*
- * In vhost-user, when we receive kick message, will test whether virtio
- * device is ready for packet processing.
- */
static void
vhost_user_set_vring_kick(struct virtio_net *dev, struct VhostUserMsg *pmsg)
{
if (vq->kickfd >= 0)
close(vq->kickfd);
vq->kickfd = file.fd;
-
- if (virtio_is_ready(dev) && !(dev->flags & VIRTIO_DEV_RUNNING)) {
- if (dev->dequeue_zero_copy) {
- RTE_LOG(INFO, VHOST_CONFIG,
- "dequeue zero copy is enabled\n");
- }
-
- if (notify_ops->new_device(dev->vid) == 0)
- dev->flags |= VIRTIO_DEV_RUNNING;
- }
}
static void
/* We have to stop the queue (virtio) if it is running. */
if (dev->flags & VIRTIO_DEV_RUNNING) {
dev->flags &= ~VIRTIO_DEV_RUNNING;
- notify_ops->destroy_device(dev->vid);
+ dev->notify_ops->destroy_device(dev->vid);
}
+ dev->flags &= ~VIRTIO_DEV_READY;
+
/* Here we are safe to get the last used index */
state->num = vq->last_used_idx;
"set queue enable: %d to qp idx: %d\n",
enable, state->index);
- if (notify_ops->vring_state_changed)
- notify_ops->vring_state_changed(dev->vid, state->index, enable);
+ if (dev->notify_ops->vring_state_changed)
+ dev->notify_ops->vring_state_changed(dev->vid, state->index, enable);
dev->virtqueue[state->index]->enabled = enable;
return 0;
}
+static int
+vhost_user_net_set_mtu(struct virtio_net *dev, struct VhostUserMsg *msg)
+{
+ if (msg->payload.u64 < VIRTIO_MIN_MTU ||
+ msg->payload.u64 > VIRTIO_MAX_MTU) {
+ RTE_LOG(ERR, VHOST_CONFIG, "Invalid MTU size (%"PRIu64")\n",
+ msg->payload.u64);
+
+ return -1;
+ }
+
+ dev->mtu = msg->payload.u64;
+
+ return 0;
+}
+
/* return bytes# of read on success or negative val on failure. */
static int
read_vhost_message(int sockfd, struct VhostUserMsg *msg)
return 0;
msg->flags &= ~VHOST_USER_VERSION_MASK;
+ msg->flags &= ~VHOST_USER_NEED_REPLY;
msg->flags |= VHOST_USER_VERSION;
msg->flags |= VHOST_USER_REPLY_MASK;
return ret;
}
+/*
+ * Allocate a queue pair if it hasn't been allocated yet
+ */
+static int
+vhost_user_check_and_alloc_queue_pair(struct virtio_net *dev, VhostUserMsg *msg)
+{
+ uint16_t vring_idx;
+
+ switch (msg->request) {
+ case VHOST_USER_SET_VRING_KICK:
+ case VHOST_USER_SET_VRING_CALL:
+ case VHOST_USER_SET_VRING_ERR:
+ vring_idx = msg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
+ break;
+ case VHOST_USER_SET_VRING_NUM:
+ case VHOST_USER_SET_VRING_BASE:
+ case VHOST_USER_SET_VRING_ENABLE:
+ vring_idx = msg->payload.state.index;
+ break;
+ case VHOST_USER_SET_VRING_ADDR:
+ vring_idx = msg->payload.addr.index;
+ break;
+ default:
+ return 0;
+ }
+
+ if (vring_idx >= VHOST_MAX_VRING) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "invalid vring index: %u\n", vring_idx);
+ return -1;
+ }
+
+ if (dev->virtqueue[vring_idx])
+ return 0;
+
+ return alloc_vring_queue(dev, vring_idx);
+}
+
int
vhost_user_msg_handler(int vid, int fd)
{
if (dev == NULL)
return -1;
+ if (!dev->notify_ops) {
+ dev->notify_ops = vhost_driver_callback_get(dev->ifname);
+ if (!dev->notify_ops) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to get callback ops for driver %s\n",
+ dev->ifname);
+ return -1;
+ }
+ }
+
ret = read_vhost_message(fd, &msg);
if (ret <= 0 || msg.request >= VHOST_USER_MAX) {
if (ret < 0)
return -1;
}
+ ret = 0;
RTE_LOG(INFO, VHOST_CONFIG, "read message %s\n",
vhost_message_str[msg.request]);
+
+ ret = vhost_user_check_and_alloc_queue_pair(dev, &msg);
+ if (ret < 0) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to alloc queue\n");
+ return -1;
+ }
+
switch (msg.request) {
case VHOST_USER_GET_FEATURES:
- msg.payload.u64 = vhost_user_get_features();
+ msg.payload.u64 = vhost_user_get_features(dev);
msg.size = sizeof(msg.payload.u64);
send_vhost_message(fd, &msg);
break;
break;
case VHOST_USER_SET_MEM_TABLE:
- vhost_user_set_mem_table(dev, &msg);
+ ret = vhost_user_set_mem_table(dev, &msg);
break;
case VHOST_USER_SET_LOG_BASE:
break;
case VHOST_USER_GET_VRING_BASE:
- ret = vhost_user_get_vring_base(dev, &msg.payload.state);
+ vhost_user_get_vring_base(dev, &msg.payload.state);
msg.size = sizeof(msg.payload.state);
send_vhost_message(fd, &msg);
break;
vhost_user_send_rarp(dev, &msg);
break;
+ case VHOST_USER_NET_SET_MTU:
+ ret = vhost_user_net_set_mtu(dev, &msg);
+ break;
+
default:
+ ret = -1;
break;
}
+ if (msg.flags & VHOST_USER_NEED_REPLY) {
+ msg.payload.u64 = !!ret;
+ msg.size = sizeof(msg.payload.u64);
+ send_vhost_message(fd, &msg);
+ }
+
+ if (!(dev->flags & VIRTIO_DEV_RUNNING) && virtio_is_ready(dev)) {
+ dev->flags |= VIRTIO_DEV_READY;
+
+ if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
+ if (dev->dequeue_zero_copy) {
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "dequeue zero copy is enabled\n");
+ }
+
+ if (dev->notify_ops->new_device(dev->vid) == 0)
+ dev->flags |= VIRTIO_DEV_RUNNING;
+ }
+ }
+
return 0;
}
Code Review / deb_dpdk.git / blobdiff