From: Yuanhan Liu <yuanhan....@linux.intel.com>
Add option to enable packed queue support for virtio-user
devices.
Signed-off-by: Yuanhan Liu <yuanhan....@linux.intel.com>
---
drivers/net/virtio/virtio_user/virtio_user_dev.c | 12 ++++++++++--
drivers/net/virtio/virtio_user/virtio_user_dev.h | 3 ++-
drivers/net/virtio/virtio_user_ethdev.c | 15 ++++++++++++++-
3 files changed, 26 insertions(+), 4 deletions(-)
diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c
b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index f90fee9e5..e5e7af185 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -314,11 +314,13 @@ virtio_user_dev_setup(struct virtio_user_dev *dev)
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_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 packed_vq)
{
snprintf(dev->path, PATH_MAX, "%s", path);
dev->max_queue_pairs = queues;
@@ -347,6 +349,12 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char
*path, int queues,
PMD_INIT_LOG(ERR, "get_features failed: %s", strerror(errno));
return -1;
}
+
+ if (packed_vq)
+ dev->device_features |= (1ull << VIRTIO_F_RING_PACKED);
+ else
+ dev->device_features &= ~(1ull << VIRTIO_F_RING_PACKED);
+
if (dev->mac_specified)
dev->device_features |= (1ull << VIRTIO_NET_F_MAC);
diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.h
b/drivers/net/virtio/virtio_user/virtio_user_dev.h
index 5f8755771..50c60c8a7 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.h
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.h
@@ -42,7 +42,8 @@ int is_vhost_user_by_type(const char *path);
int virtio_user_start_device(struct virtio_user_dev *dev);
int virtio_user_stop_device(struct virtio_user_dev *dev);
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 packed_vq);
void virtio_user_dev_uninit(struct virtio_user_dev *dev);
void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx);
#endif
diff --git a/drivers/net/virtio/virtio_user_ethdev.c
b/drivers/net/virtio/virtio_user_ethdev.c
index 263649006..1c6086f14 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -278,6 +278,8 @@ static const char *valid_args[] = {
VIRTIO_USER_ARG_QUEUE_SIZE,
#define VIRTIO_USER_ARG_INTERFACE_NAME "iface"
VIRTIO_USER_ARG_INTERFACE_NAME,
+#define VIRTIO_USER_ARG_PACKED_VQ "packed_vq"
+ VIRTIO_USER_ARG_PACKED_VQ,
NULL
};
@@ -382,6 +384,7 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
char *ifname = NULL;
char *mac_addr = NULL;
int ret = -1;
+ uint64_t packed_vq = 0;
kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_args);
if (!kvlist) {
@@ -456,6 +459,15 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
cq = 1;
}
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PACKED_VQ) == 1) {
+ if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PACKED_VQ,
+ &get_integer_arg, &packed_vq) < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_PACKED_VQ);
+ goto end;
+ }
+ }
+
if (queues > 1 && cq == 0) {
PMD_INIT_LOG(ERR, "multi-q requires ctrl-q");
goto end;
@@ -477,7 +489,8 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
hw = eth_dev->data->dev_private;
if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq,
- queue_size, mac_addr, &ifname) < 0) {
+ queue_size, mac_addr, &ifname,
+ packed_vq) < 0) {
PMD_INIT_LOG(ERR, "virtio_user_dev_init fails");
virtio_user_eth_dev_free(eth_dev);
goto end;
--
2.14.3
