#include <rte_virtio_net.h>
#include "vhost-net.h"
-#include "virtio-net.h"
#define MAX_VHOST_DEVICE 1024
static struct virtio_net *vhost_devices[MAX_VHOST_DEVICE];
return vhost_va;
}
-
struct virtio_net *
-get_device(struct vhost_device_ctx ctx)
+get_device(int vid)
{
- struct virtio_net *dev = vhost_devices[ctx.fh];
+ struct virtio_net *dev = vhost_devices[vid];
if (unlikely(!dev)) {
RTE_LOG(ERR, VHOST_CONFIG,
- "(%"PRIu64") device not found.\n", ctx.fh);
+ "(%d) device not found.\n", vid);
}
return dev;
{
memset(vq, 0, sizeof(struct vhost_virtqueue));
- vq->kickfd = -1;
- vq->callfd = -1;
+ vq->kickfd = VIRTIO_UNINITIALIZED_EVENTFD;
+ vq->callfd = VIRTIO_UNINITIALIZED_EVENTFD;
/* Backends are set to -1 indicating an inactive device. */
vq->backend = -1;
/*
* Reset some variables in device structure, while keeping few
- * others untouched, such as device_fh, ifname, virt_qp_nb: they
+ * others untouched, such as vid, ifname, virt_qp_nb: they
* should be same unless the device is removed.
*/
static void
* list.
*/
int
-vhost_new_device(struct vhost_device_ctx ctx)
+vhost_new_device(void)
{
struct virtio_net *dev;
int i;
dev = rte_zmalloc(NULL, sizeof(struct virtio_net), 0);
if (dev == NULL) {
RTE_LOG(ERR, VHOST_CONFIG,
- "(%"PRIu64") Failed to allocate memory for dev.\n",
- ctx.fh);
+ "Failed to allocate memory for new dev.\n");
return -1;
}
}
vhost_devices[i] = dev;
- dev->device_fh = i;
+ dev->vid = i;
return i;
}
* cleanup the device and remove it from device configuration linked list.
*/
void
-vhost_destroy_device(struct vhost_device_ctx ctx)
+vhost_destroy_device(int vid)
{
- struct virtio_net *dev = get_device(ctx);
+ struct virtio_net *dev = get_device(vid);
+
+ if (dev == NULL)
+ return;
- if (dev->flags & VIRTIO_DEV_RUNNING)
- notify_ops->destroy_device(dev);
+ if (dev->flags & VIRTIO_DEV_RUNNING) {
+ dev->flags &= ~VIRTIO_DEV_RUNNING;
+ notify_ops->destroy_device(vid);
+ }
cleanup_device(dev, 1);
free_device(dev);
- vhost_devices[ctx.fh] = NULL;
+ vhost_devices[vid] = NULL;
}
void
-vhost_set_ifname(struct vhost_device_ctx ctx,
- const char *if_name, unsigned int if_len)
+vhost_set_ifname(int vid, const char *if_name, unsigned int if_len)
{
struct virtio_net *dev;
unsigned int len;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return;
sizeof(dev->ifname) : if_len;
strncpy(dev->ifname, if_name, len);
+ dev->ifname[sizeof(dev->ifname) - 1] = '\0';
}
* the device hasn't been initialised.
*/
int
-vhost_set_owner(struct vhost_device_ctx ctx)
+vhost_set_owner(int vid)
{
struct virtio_net *dev;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
* Called from CUSE IOCTL: VHOST_RESET_OWNER
*/
int
-vhost_reset_owner(struct vhost_device_ctx ctx)
+vhost_reset_owner(int vid)
{
struct virtio_net *dev;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
- if (dev->flags & VIRTIO_DEV_RUNNING)
- notify_ops->destroy_device(dev);
+ if (dev->flags & VIRTIO_DEV_RUNNING) {
+ dev->flags &= ~VIRTIO_DEV_RUNNING;
+ notify_ops->destroy_device(vid);
+ }
cleanup_device(dev, 0);
reset_device(dev);
* The features that we support are requested.
*/
int
-vhost_get_features(struct vhost_device_ctx ctx, uint64_t *pu)
+vhost_get_features(int vid, uint64_t *pu)
{
struct virtio_net *dev;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
* We receive the negotiated features supported by us and the virtio device.
*/
int
-vhost_set_features(struct vhost_device_ctx ctx, uint64_t *pu)
+vhost_set_features(int vid, uint64_t *pu)
{
struct virtio_net *dev;
- uint16_t vhost_hlen;
- uint16_t i;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
if (*pu & ~VHOST_FEATURES)
dev->features = *pu;
if (dev->features &
((1 << VIRTIO_NET_F_MRG_RXBUF) | (1ULL << VIRTIO_F_VERSION_1))) {
- vhost_hlen = sizeof(struct virtio_net_hdr_mrg_rxbuf);
+ dev->vhost_hlen = sizeof(struct virtio_net_hdr_mrg_rxbuf);
} else {
- vhost_hlen = sizeof(struct virtio_net_hdr);
+ dev->vhost_hlen = sizeof(struct virtio_net_hdr);
}
LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") Mergeable RX buffers %s, virtio 1 %s\n",
- dev->device_fh,
+ "(%d) mergeable RX buffers %s, virtio 1 %s\n",
+ dev->vid,
(dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) ? "on" : "off",
(dev->features & (1ULL << VIRTIO_F_VERSION_1)) ? "on" : "off");
- for (i = 0; i < dev->virt_qp_nb; i++) {
- uint16_t base_idx = i * VIRTIO_QNUM;
-
- dev->virtqueue[base_idx + VIRTIO_RXQ]->vhost_hlen = vhost_hlen;
- dev->virtqueue[base_idx + VIRTIO_TXQ]->vhost_hlen = vhost_hlen;
- }
-
return 0;
}
* The virtio device sends us the size of the descriptor ring.
*/
int
-vhost_set_vring_num(struct vhost_device_ctx ctx,
- struct vhost_vring_state *state)
+vhost_set_vring_num(int vid, struct vhost_vring_state *state)
{
struct virtio_net *dev;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
numa_realloc(struct virtio_net *dev, int index)
{
int oldnode, newnode;
- struct virtio_net *old_dev, *new_dev = NULL;
- struct vhost_virtqueue *old_vq, *new_vq = NULL;
+ struct virtio_net *old_dev;
+ struct vhost_virtqueue *old_vq, *vq;
int ret;
- int realloc_dev = 0, realloc_vq = 0;
+
+ /*
+ * 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;
old_dev = dev;
- old_vq = dev->virtqueue[index];
+ vq = old_vq = dev->virtqueue[index];
+
+ ret = get_mempolicy(&newnode, NULL, 0, old_vq->desc,
+ MPOL_F_NODE | MPOL_F_ADDR);
- ret = get_mempolicy(&newnode, NULL, 0, old_vq->desc,
- MPOL_F_NODE | MPOL_F_ADDR);
- ret = ret | get_mempolicy(&oldnode, NULL, 0, old_dev,
- MPOL_F_NODE | MPOL_F_ADDR);
+ /* check if we need to reallocate vq */
+ ret |= get_mempolicy(&oldnode, NULL, 0, old_vq,
+ MPOL_F_NODE | MPOL_F_ADDR);
if (ret) {
RTE_LOG(ERR, VHOST_CONFIG,
- "Unable to get vring desc or dev numa information.\n");
+ "Unable to get vq numa information.\n");
return dev;
}
- if (oldnode != newnode)
- realloc_dev = 1;
+ 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);
+ if (!vq)
+ return dev;
+
+ memcpy(vq, old_vq, sizeof(*vq) * VIRTIO_QNUM);
+ rte_free(old_vq);
+ }
- ret = get_mempolicy(&oldnode, NULL, 0, old_vq,
- MPOL_F_NODE | MPOL_F_ADDR);
+ /* check if we need to reallocate dev */
+ ret = get_mempolicy(&oldnode, NULL, 0, old_dev,
+ MPOL_F_NODE | MPOL_F_ADDR);
if (ret) {
RTE_LOG(ERR, VHOST_CONFIG,
- "Unable to get vq numa information.\n");
- return dev;
+ "Unable to get dev numa information.\n");
+ goto out;
}
- if (oldnode != newnode)
- realloc_vq = 1;
-
- if (realloc_dev == 0 && realloc_vq == 0)
- return dev;
-
- if (realloc_dev)
- new_dev = rte_malloc_socket(NULL,
- sizeof(struct virtio_net), 0, newnode);
- if (realloc_vq)
- new_vq = rte_malloc_socket(NULL,
- sizeof(struct vhost_virtqueue), 0, newnode);
- if (!new_dev && !new_vq)
- return dev;
-
- if (realloc_vq)
- memcpy(new_vq, old_vq, sizeof(*new_vq));
- if (realloc_dev)
- memcpy(new_dev, old_dev, sizeof(*new_dev));
+ if (oldnode != newnode) {
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "reallocate dev from %d to %d node\n",
+ oldnode, newnode);
+ dev = rte_malloc_socket(NULL, sizeof(*dev), 0, newnode);
+ if (!dev) {
+ dev = old_dev;
+ goto out;
+ }
- (new_dev ? new_dev : old_dev)->virtqueue[index] =
- new_vq ? new_vq : old_vq;
- if (realloc_vq)
- rte_free(old_vq);
- if (realloc_dev) {
+ memcpy(dev, old_dev, sizeof(*dev));
rte_free(old_dev);
-
- vhost_devices[new_dev->device_fh] = new_dev;
}
- return realloc_dev ? new_dev : dev;
+out:
+ dev->virtqueue[index] = vq;
+ dev->virtqueue[index + 1] = vq + 1;
+ vhost_devices[dev->vid] = dev;
+
+ return dev;
}
#else
static struct virtio_net*
* This function then converts these to our address space.
*/
int
-vhost_set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
+vhost_set_vring_addr(int vid, struct vhost_vring_addr *addr)
{
struct virtio_net *dev;
struct vhost_virtqueue *vq;
- dev = get_device(ctx);
+ dev = get_device(vid);
if ((dev == NULL) || (dev->mem == NULL))
return -1;
addr->desc_user_addr);
if (vq->desc == 0) {
RTE_LOG(ERR, VHOST_CONFIG,
- "(%"PRIu64") Failed to find desc ring address.\n",
- dev->device_fh);
+ "(%d) failed to find desc ring address.\n",
+ dev->vid);
return -1;
}
addr->avail_user_addr);
if (vq->avail == 0) {
RTE_LOG(ERR, VHOST_CONFIG,
- "(%"PRIu64") Failed to find avail ring address.\n",
- dev->device_fh);
+ "(%d) failed to find avail ring address.\n",
+ dev->vid);
return -1;
}
addr->used_user_addr);
if (vq->used == 0) {
RTE_LOG(ERR, VHOST_CONFIG,
- "(%"PRIu64") Failed to find used ring address.\n",
- dev->device_fh);
+ "(%d) failed to find used ring address.\n",
+ dev->vid);
return -1;
}
+ if (vq->last_used_idx != vq->used->idx) {
+ RTE_LOG(WARNING, VHOST_CONFIG,
+ "last_used_idx (%u) and vq->used->idx (%u) mismatches; "
+ "some packets maybe resent for Tx and dropped for Rx\n",
+ vq->last_used_idx, vq->used->idx);
+ vq->last_used_idx = vq->used->idx;
+ }
+
vq->log_guest_addr = addr->log_guest_addr;
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n",
- dev->device_fh, vq->desc);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n",
- dev->device_fh, vq->avail);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n",
- dev->device_fh, vq->used);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") log_guest_addr: %"PRIx64"\n",
- dev->device_fh, vq->log_guest_addr);
+ LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address desc: %p\n",
+ dev->vid, vq->desc);
+ LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address avail: %p\n",
+ dev->vid, vq->avail);
+ LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address used: %p\n",
+ dev->vid, vq->used);
+ LOG_DEBUG(VHOST_CONFIG, "(%d) log_guest_addr: %" PRIx64 "\n",
+ dev->vid, vq->log_guest_addr);
return 0;
}
* The virtio device sends us the available ring last used index.
*/
int
-vhost_set_vring_base(struct vhost_device_ctx ctx,
- struct vhost_vring_state *state)
+vhost_set_vring_base(int vid, struct vhost_vring_state *state)
{
struct virtio_net *dev;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
/* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->last_used_idx = state->num;
- dev->virtqueue[state->index]->last_used_idx_res = state->num;
return 0;
}
* We send the virtio device our available ring last used index.
*/
int
-vhost_get_vring_base(struct vhost_device_ctx ctx, uint32_t index,
+vhost_get_vring_base(int vid, uint32_t index,
struct vhost_vring_state *state)
{
struct virtio_net *dev;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
* copied into our process space.
*/
int
-vhost_set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
+vhost_set_vring_call(int vid, struct vhost_vring_file *file)
{
struct virtio_net *dev;
struct vhost_virtqueue *vq;
uint32_t cur_qp_idx = file->index / VIRTIO_QNUM;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
* This fd gets copied into our process space.
*/
int
-vhost_set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
+vhost_set_vring_kick(int vid, struct vhost_vring_file *file)
{
struct virtio_net *dev;
struct vhost_virtqueue *vq;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
* The device will still exist in the device configuration linked list.
*/
int
-vhost_set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
+vhost_set_backend(int vid, struct vhost_vring_file *file)
{
struct virtio_net *dev;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
* we add the device.
*/
if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
- if (((int)dev->virtqueue[VIRTIO_TXQ]->backend != VIRTIO_DEV_STOPPED) &&
- ((int)dev->virtqueue[VIRTIO_RXQ]->backend != VIRTIO_DEV_STOPPED)) {
- return notify_ops->new_device(dev);
+ if (dev->virtqueue[VIRTIO_TXQ]->backend != VIRTIO_DEV_STOPPED &&
+ dev->virtqueue[VIRTIO_RXQ]->backend != VIRTIO_DEV_STOPPED) {
+ if (notify_ops->new_device(vid) < 0)
+ return -1;
+ dev->flags |= VIRTIO_DEV_RUNNING;
}
- /* Otherwise we remove it. */
- } else
- if (file->fd == VIRTIO_DEV_STOPPED)
- notify_ops->destroy_device(dev);
+ } else if (file->fd == VIRTIO_DEV_STOPPED) {
+ dev->flags &= ~VIRTIO_DEV_RUNNING;
+ notify_ops->destroy_device(vid);
+ }
+
+ return 0;
+}
+
+int
+rte_vhost_get_numa_node(int vid)
+{
+#ifdef RTE_LIBRTE_VHOST_NUMA
+ struct virtio_net *dev = get_device(vid);
+ int numa_node;
+ int ret;
+
+ if (dev == NULL)
+ return -1;
+
+ ret = get_mempolicy(&numa_node, NULL, 0, dev,
+ MPOL_F_NODE | MPOL_F_ADDR);
+ if (ret < 0) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%d) failed to query numa node: %d\n", vid, ret);
+ return -1;
+ }
+
+ return numa_node;
+#else
+ RTE_SET_USED(vid);
+ return -1;
+#endif
+}
+
+uint32_t
+rte_vhost_get_queue_num(int vid)
+{
+ struct virtio_net *dev = get_device(vid);
+
+ if (dev == NULL)
+ return 0;
+
+ return dev->virt_qp_nb;
+}
+
+int
+rte_vhost_get_ifname(int vid, char *buf, size_t len)
+{
+ struct virtio_net *dev = get_device(vid);
+
+ if (dev == NULL)
+ return -1;
+
+ len = RTE_MIN(len, sizeof(dev->ifname));
+
+ strncpy(buf, dev->ifname, len);
+ buf[len - 1] = '\0';
+
return 0;
}
-int rte_vhost_enable_guest_notification(struct virtio_net *dev,
- uint16_t queue_id, int enable)
+uint16_t
+rte_vhost_avail_entries(int vid, uint16_t queue_id)
{
+ struct virtio_net *dev;
+ struct vhost_virtqueue *vq;
+
+ dev = get_device(vid);
+ if (!dev)
+ return 0;
+
+ vq = dev->virtqueue[queue_id];
+ if (!vq->enabled)
+ return 0;
+
+ return *(volatile uint16_t *)&vq->avail->idx - vq->last_used_idx;
+}
+
+int
+rte_vhost_enable_guest_notification(int vid, uint16_t queue_id, int enable)
+{
+ struct virtio_net *dev = get_device(vid);
+
+ if (dev == NULL)
+ return -1;
+
if (enable) {
RTE_LOG(ERR, VHOST_CONFIG,
"guest notification isn't supported.\n");
git.droids-corp.org / dpdk.git / blobdiff