[dpdk-dev] [RFC 03/29] net/virtio-user: add option to enable 1.1

[Tiwei Bie <tiwei.bie@intel.com>]

From: Yuanhan Liu <yuanhan.liu@linux.intel.com>

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
---
 drivers/net/virtio/virtio_user/virtio_user_dev.c |  9 ++++++++-
 drivers/net/virtio/virtio_user/virtio_user_dev.h |  3 ++-
 drivers/net/virtio/virtio_user_ethdev.c          | 14 +++++++++++++-
 3 files changed, 23 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 450404b..3ff6a05 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -337,7 +337,8 @@ 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 version_1_1)
 {
 	snprintf(dev->path, PATH_MAX, "%s", path);
 	dev->max_queue_pairs = queues;
@@ -365,6 +366,12 @@ 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 (version_1_1)
+		dev->features |= (1ull << VIRTIO_F_VERSION_1_1);
+	else
+		dev->features &= ~(1ull << VIRTIO_F_VERSION_1_1);
+
 	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 8361b6b..76fa17f 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.h
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.h
@@ -71,7 +71,8 @@ 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 version_1_1);
 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 280406c..74c7c60 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -300,6 +300,8 @@ 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_VERSION_1_1     "version_1_1"
+	VIRTIO_USER_ARG_VERSION_1_1,
 	NULL
 };
 
@@ -404,6 +406,7 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
 	char *ifname = NULL;
 	char *mac_addr = NULL;
 	int ret = -1;
+	uint64_t version_1_1 = 0;
 
 	kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_args);
 	if (!kvlist) {
@@ -478,6 +481,15 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
 		cq = 1;
 	}
 
+	if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_VERSION_1_1) == 1) {
+		if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_VERSION_1_1,
+				       &get_integer_arg, &version_1_1) < 0) {
+			PMD_INIT_LOG(ERR, "error to parse %s",
+				     VIRTIO_USER_ARG_VERSION_1_1);
+			goto end;
+		}
+	}
+
 	if (queues > 1 && cq == 0) {
 		PMD_INIT_LOG(ERR, "multi-q requires ctrl-q");
 		goto end;
@@ -499,7 +511,7 @@ 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, version_1_1) < 0) {
 			PMD_INIT_LOG(ERR, "virtio_user_dev_init fails");
 			virtio_user_eth_dev_free(eth_dev);
 			goto end;
-- 
2.7.4