In some cases when using the vHost PMD, certain vHost library functions
may still need to be accessed. One such example is the
rte_vhost_get_queue_num function which returns the number of virtqueues
reported by the guest - information which is not exposed by the PMD.
This commit introduces a new rte_eth_vhost function that returns the
'vid' associated with a given port id. This allows the PMD user to call
vHost library functions which require the 'vid' value.
Signed-off-by: Ciara Loftus <ciara.loftus at intel.com>
---
drivers/net/vhost/rte_eth_vhost.c | 29 +++++++++++++++++++++++++++++
drivers/net/vhost/rte_eth_vhost.h | 9 +++++++++
drivers/net/vhost/rte_pmd_vhost_version.map | 6 ++++++
3 files changed, 44 insertions(+)
diff --git a/drivers/net/vhost/rte_eth_vhost.c
b/drivers/net/vhost/rte_eth_vhost.c
index 7539cd4..091517d 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c
@@ -428,6 +428,35 @@ rte_eth_vhost_get_queue_event(uint8_t port_id,
return -1;
}
+int
+rte_eth_vhost_get_vid_from_port_id(uint8_t port_id)
+{
+ struct internal_list *list;
+ struct rte_eth_dev *eth_dev;
+ struct vhost_queue *vq;
+ int vid = -1;
+
+ if (!rte_eth_dev_is_valid_port(port_id))
+ return -1;
+
+ pthread_mutex_lock(&internal_list_lock);
+
+ TAILQ_FOREACH(list, &internal_list, next) {
+ eth_dev = list->eth_dev;
+ if (eth_dev->data->port_id == port_id) {
+ vq = eth_dev->data->rx_queues[0];
+ if (vq) {
+ vid = vq->vid;
+ }
+ break;
+ }
+ }
+
+ pthread_mutex_unlock(&internal_list_lock);
+
+ return vid;
+}
+
static void *
vhost_driver_session(void *param __rte_unused)
{
diff --git a/drivers/net/vhost/rte_eth_vhost.h
b/drivers/net/vhost/rte_eth_vhost.h
index ff5d877..7c98b1a 100644
--- a/drivers/net/vhost/rte_eth_vhost.h
+++ b/drivers/net/vhost/rte_eth_vhost.h
@@ -102,6 +102,15 @@ struct rte_eth_vhost_queue_event {
int rte_eth_vhost_get_queue_event(uint8_t port_id,
struct rte_eth_vhost_queue_event *event);
+/**
+ * Get the 'vid' value associated with the specified port.
+ *
+ * @return
+ * - On success, the 'vid' associated with 'port_id'.
+ * - On failure, a negative value.
+ */
+int rte_eth_vhost_get_vid_from_port_id(uint8_t port_id);
+
#ifdef __cplusplus
}
#endif
diff --git a/drivers/net/vhost/rte_pmd_vhost_version.map
b/drivers/net/vhost/rte_pmd_vhost_version.map
index 65bf3a8..0533a83 100644
--- a/drivers/net/vhost/rte_pmd_vhost_version.map
+++ b/drivers/net/vhost/rte_pmd_vhost_version.map
@@ -8,3 +8,9 @@ DPDK_16.04 {
local: *;
};
+
+DPDK_16.11 {
+ global:
+
+ rte_eth_vhost_get_vid_from_port_id;
+}
--
2.4.3
