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authorChristian Ehrhardt <christian.ehrhardt@canonical.com>2016-07-06 09:22:35 +0200
committerChristian Ehrhardt <christian.ehrhardt@canonical.com>2016-07-06 16:09:40 +0200
commit8b25d1ad5d2264bdfc2818c7bda74ee2697df6db (patch)
tree8c3c769777f7e66a2d1ba7dd7651b563cfde370b /lib/librte_vhost/vhost_user/virtio-net-user.c
parent97f17497d162afdb82c8704bf097f0fee3724b2e (diff)
Imported Upstream version 16.07-rc1
Change-Id: I40a523e52f12e8496fdd69e902824b0226c303de Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'lib/librte_vhost/vhost_user/virtio-net-user.c')
-rw-r--r--lib/librte_vhost/vhost_user/virtio-net-user.c102
1 files changed, 63 insertions, 39 deletions
diff --git a/lib/librte_vhost/vhost_user/virtio-net-user.c b/lib/librte_vhost/vhost_user/virtio-net-user.c
index f5248bc4..e7c43479 100644
--- a/lib/librte_vhost/vhost_user/virtio-net-user.c
+++ b/lib/librte_vhost/vhost_user/virtio-net-user.c
@@ -43,7 +43,6 @@
#include <rte_common.h>
#include <rte_log.h>
-#include "virtio-net.h"
#include "virtio-net-user.h"
#include "vhost-net-user.h"
#include "vhost-net.h"
@@ -64,9 +63,10 @@ static uint64_t
get_blk_size(int fd)
{
struct stat stat;
+ int ret;
- fstat(fd, &stat);
- return (uint64_t)stat.st_blksize;
+ ret = fstat(fd, &stat);
+ return ret == -1 ? (uint64_t)-1 : (uint64_t)stat.st_blksize;
}
static void
@@ -96,10 +96,14 @@ vhost_backend_cleanup(struct virtio_net *dev)
free(dev->mem);
dev->mem = NULL;
}
+ if (dev->log_addr) {
+ munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
+ dev->log_addr = 0;
+ }
}
int
-user_set_mem_table(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
+user_set_mem_table(int vid, struct VhostUserMsg *pmsg)
{
struct VhostUserMemory memory = pmsg->payload.memory;
struct virtio_memory_regions *pregion;
@@ -110,13 +114,15 @@ user_set_mem_table(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
uint64_t alignment;
/* unmap old memory regions one by one*/
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL)
return -1;
/* Remove from the data plane. */
- 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);
+ }
if (dev->mem) {
free_mem_region(dev);
@@ -130,8 +136,8 @@ user_set_mem_table(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
sizeof(struct orig_region_map) * memory.nregions);
if (dev->mem == NULL) {
RTE_LOG(ERR, VHOST_CONFIG,
- "(%"PRIu64") Failed to allocate memory for dev->mem\n",
- dev->device_fh);
+ "(%d) failed to allocate memory for dev->mem\n",
+ dev->vid);
return -1;
}
dev->mem->nregions = memory.nregions;
@@ -162,6 +168,11 @@ user_set_mem_table(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
* aligned.
*/
alignment = get_blk_size(pmsg->fds[idx]);
+ if (alignment == (uint64_t)-1) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "couldn't get hugepage size through fstat\n");
+ goto err_mmap;
+ }
mapped_size = RTE_ALIGN_CEIL(mapped_size, alignment);
mapped_address = (uint64_t)(uintptr_t)mmap(NULL,
@@ -252,7 +263,7 @@ virtio_is_ready(struct virtio_net *dev)
}
void
-user_set_vring_call(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
+user_set_vring_call(int vid, struct VhostUserMsg *pmsg)
{
struct vhost_vring_file file;
@@ -263,7 +274,7 @@ user_set_vring_call(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
file.fd = pmsg->fds[0];
RTE_LOG(INFO, VHOST_CONFIG,
"vring call idx:%d file:%d\n", file.index, file.fd);
- vhost_set_vring_call(ctx, &file);
+ vhost_set_vring_call(vid, &file);
}
@@ -272,10 +283,13 @@ user_set_vring_call(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
* device is ready for packet processing.
*/
void
-user_set_vring_kick(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
+user_set_vring_kick(int vid, struct VhostUserMsg *pmsg)
{
struct vhost_vring_file file;
- struct virtio_net *dev = get_device(ctx);
+ struct virtio_net *dev = get_device(vid);
+
+ if (!dev)
+ return;
file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
@@ -284,30 +298,32 @@ user_set_vring_kick(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
file.fd = pmsg->fds[0];
RTE_LOG(INFO, VHOST_CONFIG,
"vring kick idx:%d file:%d\n", file.index, file.fd);
- vhost_set_vring_kick(ctx, &file);
+ vhost_set_vring_kick(vid, &file);
- if (virtio_is_ready(dev) &&
- !(dev->flags & VIRTIO_DEV_RUNNING))
- notify_ops->new_device(dev);
+ if (virtio_is_ready(dev) && !(dev->flags & VIRTIO_DEV_RUNNING)) {
+ if (notify_ops->new_device(vid) == 0)
+ dev->flags |= VIRTIO_DEV_RUNNING;
+ }
}
/*
* when virtio is stopped, qemu will send us the GET_VRING_BASE message.
*/
int
-user_get_vring_base(struct vhost_device_ctx ctx,
- struct vhost_vring_state *state)
+user_get_vring_base(int vid, struct vhost_vring_state *state)
{
- struct virtio_net *dev = get_device(ctx);
+ struct virtio_net *dev = get_device(vid);
if (dev == NULL)
return -1;
/* We have to stop the queue (virtio) if it is running. */
- 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);
+ }
/* Here we are safe to get the last used index */
- vhost_get_vring_base(ctx, state->index, state);
+ vhost_get_vring_base(vid, state->index, state);
RTE_LOG(INFO, VHOST_CONFIG,
"vring base idx:%d file:%d\n", state->index, state->num);
@@ -329,19 +345,21 @@ user_get_vring_base(struct vhost_device_ctx ctx,
* enable the virtio queue pair.
*/
int
-user_set_vring_enable(struct vhost_device_ctx ctx,
- struct vhost_vring_state *state)
+user_set_vring_enable(int vid, struct vhost_vring_state *state)
{
- struct virtio_net *dev = get_device(ctx);
+ struct virtio_net *dev;
int enable = (int)state->num;
+ dev = get_device(vid);
+ if (dev == NULL)
+ return -1;
+
RTE_LOG(INFO, VHOST_CONFIG,
"set queue enable: %d to qp idx: %d\n",
enable, state->index);
- if (notify_ops->vring_state_changed) {
- notify_ops->vring_state_changed(dev, state->index, enable);
- }
+ if (notify_ops->vring_state_changed)
+ notify_ops->vring_state_changed(vid, state->index, enable);
dev->virtqueue[state->index]->enabled = enable;
@@ -349,12 +367,11 @@ user_set_vring_enable(struct vhost_device_ctx ctx,
}
void
-user_set_protocol_features(struct vhost_device_ctx ctx,
- uint64_t protocol_features)
+user_set_protocol_features(int vid, uint64_t protocol_features)
{
struct virtio_net *dev;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (dev == NULL || protocol_features & ~VHOST_USER_PROTOCOL_FEATURES)
return;
@@ -362,15 +379,14 @@ user_set_protocol_features(struct vhost_device_ctx ctx,
}
int
-user_set_log_base(struct vhost_device_ctx ctx,
- struct VhostUserMsg *msg)
+user_set_log_base(int vid, struct VhostUserMsg *msg)
{
struct virtio_net *dev;
int fd = msg->fds[0];
uint64_t size, off;
void *addr;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (!dev)
return -1;
@@ -397,13 +413,21 @@ user_set_log_base(struct vhost_device_ctx ctx,
* fail when offset is not page size aligned.
*/
addr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ close(fd);
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;
+ /*
+ * Free previously mapped log memory on occasionally
+ * multiple VHOST_USER_SET_LOG_BASE.
+ */
+ if (dev->log_addr) {
+ munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
+ }
+ dev->log_addr = (uint64_t)(uintptr_t)addr;
+ dev->log_base = dev->log_addr + off;
dev->log_size = size;
return 0;
@@ -418,12 +442,12 @@ user_set_log_base(struct vhost_device_ctx ctx,
* a flag 'broadcast_rarp' to let rte_vhost_dequeue_burst() inject it.
*/
int
-user_send_rarp(struct vhost_device_ctx ctx, struct VhostUserMsg *msg)
+user_send_rarp(int vid, struct VhostUserMsg *msg)
{
struct virtio_net *dev;
uint8_t *mac = (uint8_t *)&msg->payload.u64;
- dev = get_device(ctx);
+ dev = get_device(vid);
if (!dev)
return -1;