#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <unistd.h>
#include <rte_common.h>
#include <rte_log.h>
}
}
+void
+vhost_backend_cleanup(struct virtio_net *dev)
+{
+ if (dev->mem) {
+ free_mem_region(dev);
+ free(dev->mem);
+ dev->mem = NULL;
+ }
+}
+
int
user_set_mem_table(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
{
vq_is_ready(struct vhost_virtqueue *vq)
{
return vq && vq->desc &&
- vq->kickfd != -1 &&
- vq->callfd != -1;
+ vq->kickfd != VIRTIO_UNINITIALIZED_EVENTFD &&
+ vq->callfd != VIRTIO_UNINITIALIZED_EVENTFD;
}
static int
file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
- file.fd = -1;
+ file.fd = VIRTIO_INVALID_EVENTFD;
else
file.fd = pmsg->fds[0];
RTE_LOG(INFO, VHOST_CONFIG,
"vring call idx:%d file:%d\n", file.index, file.fd);
- ops->set_vring_call(ctx, &file);
+ vhost_set_vring_call(ctx, &file);
}
file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
- file.fd = -1;
+ file.fd = VIRTIO_INVALID_EVENTFD;
else
file.fd = pmsg->fds[0];
RTE_LOG(INFO, VHOST_CONFIG,
"vring kick idx:%d file:%d\n", file.index, file.fd);
- ops->set_vring_kick(ctx, &file);
+ vhost_set_vring_kick(ctx, &file);
if (virtio_is_ready(dev) &&
!(dev->flags & VIRTIO_DEV_RUNNING))
notify_ops->destroy_device(dev);
/* Here we are safe to get the last used index */
- ops->get_vring_base(ctx, state->index, state);
+ vhost_get_vring_base(ctx, state->index, state);
RTE_LOG(INFO, VHOST_CONFIG,
"vring base idx:%d file:%d\n", state->index, state->num);
* sent and only sent in vhost_vring_stop.
* TODO: cleanup the vring, it isn't usable since here.
*/
- if (dev->virtqueue[state->index]->kickfd >= 0) {
+ if (dev->virtqueue[state->index]->kickfd >= 0)
close(dev->virtqueue[state->index]->kickfd);
- dev->virtqueue[state->index]->kickfd = -1;
- }
+
+ dev->virtqueue[state->index]->kickfd = VIRTIO_UNINITIALIZED_EVENTFD;
return 0;
}
}
void
-user_destroy_device(struct vhost_device_ctx ctx)
+user_set_protocol_features(struct vhost_device_ctx ctx,
+ uint64_t protocol_features)
{
- struct virtio_net *dev = get_device(ctx);
+ struct virtio_net *dev;
- if (dev && (dev->flags & VIRTIO_DEV_RUNNING))
- notify_ops->destroy_device(dev);
+ dev = get_device(ctx);
+ if (dev == NULL || protocol_features & ~VHOST_USER_PROTOCOL_FEATURES)
+ return;
- if (dev && dev->mem) {
- free_mem_region(dev);
- free(dev->mem);
- dev->mem = NULL;
+ dev->protocol_features = protocol_features;
+}
+
+int
+user_set_log_base(struct vhost_device_ctx ctx,
+ struct VhostUserMsg *msg)
+{
+ struct virtio_net *dev;
+ int fd = msg->fds[0];
+ uint64_t size, off;
+ void *addr;
+
+ dev = get_device(ctx);
+ if (!dev)
+ return -1;
+
+ if (fd < 0) {
+ RTE_LOG(ERR, VHOST_CONFIG, "invalid log fd: %d\n", fd);
+ return -1;
+ }
+
+ if (msg->size != sizeof(VhostUserLog)) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "invalid log base msg size: %"PRId32" != %d\n",
+ msg->size, (int)sizeof(VhostUserLog));
+ return -1;
+ }
+
+ size = msg->payload.log.mmap_size;
+ off = msg->payload.log.mmap_offset;
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "log mmap size: %"PRId64", offset: %"PRId64"\n",
+ size, off);
+
+ /*
+ * mmap from 0 to workaround a hugepage mmap bug: mmap will
+ * fail when offset is not page size aligned.
+ */
+ addr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (addr == MAP_FAILED) {
+ RTE_LOG(ERR, VHOST_CONFIG, "mmap log base failed!\n");
+ return -1;
}
+
+ /* TODO: unmap on stop */
+ dev->log_base = (uint64_t)(uintptr_t)addr + off;
+ dev->log_size = size;
+
+ return 0;
}
-void
-user_set_protocol_features(struct vhost_device_ctx ctx,
- uint64_t protocol_features)
+/*
+ * An rarp packet is constructed and broadcasted to notify switches about
+ * the new location of the migrated VM, so that packets from outside will
+ * not be lost after migration.
+ *
+ * However, we don't actually "send" a rarp packet here, instead, we set
+ * a flag 'broadcast_rarp' to let rte_vhost_dequeue_burst() inject it.
+ */
+int
+user_send_rarp(struct vhost_device_ctx ctx, struct VhostUserMsg *msg)
{
struct virtio_net *dev;
+ uint8_t *mac = (uint8_t *)&msg->payload.u64;
dev = get_device(ctx);
- if (dev == NULL || protocol_features & ~VHOST_USER_PROTOCOL_FEATURES)
- return;
+ if (!dev)
+ return -1;
- dev->protocol_features = protocol_features;
+ RTE_LOG(DEBUG, VHOST_CONFIG,
+ ":: mac: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+ memcpy(dev->mac.addr_bytes, mac, 6);
+
+ /*
+ * Set the flag to inject a RARP broadcast packet at
+ * rte_vhost_dequeue_burst().
+ *
+ * rte_smp_wmb() is for making sure the mac is copied
+ * before the flag is set.
+ */
+ rte_smp_wmb();
+ rte_atomic16_set(&dev->broadcast_rarp, 1);
+
+ return 0;
}
git.droids-corp.org / dpdk.git / blobdiff