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 | 6 +++++-
drivers/net/virtio/virtio_user/virtio_user_dev.h | 3 ++-
drivers/net/virtio/virtio_user_ethdev.c | 15 ++++++++++++++-
3 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c
b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 38b8bc90d..3c4034854 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -334,7 +334,8 @@ virtio_user_dev_setup(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)
{
snprintf(dev->path, PATH_MAX, "%s", path);
dev->max_queue_pairs = queues;
@@ -376,6 +377,9 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char
*path, int queues,
dev->device_features = VIRTIO_USER_SUPPORTED_FEATURES;
}
+ if (packed_vq > 0)
+ 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 ade727e46..a6e42f93f 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.h
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.h
@@ -45,7 +45,8 @@ 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 4e7b3c34f..579583a59 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -341,6 +341,8 @@ static const char *valid_args[] = {
VIRTIO_USER_ARG_INTERFACE_NAME,
#define VIRTIO_USER_ARG_SERVER_MODE "server"
VIRTIO_USER_ARG_SERVER_MODE,
+#define VIRTIO_USER_ARG_PACKED_VQ "packed_vq"
+ VIRTIO_USER_ARG_PACKED_VQ,
NULL
};
@@ -447,6 +449,7 @@ 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) {
@@ -530,6 +533,15 @@ 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;
@@ -558,7 +570,8 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
else
vu_dev->is_server = false;
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
