During port start, function mlx5_ctrl_flow_vlan() is called to create
default ingress flow rules.
For specific use-cases, a port can be used for Tx only.
In such case, number of Rx queues can be set to 0 to save resources,
hence the default ingress rules are irrelevant.
This patch modifies function mlx5_ctrl_flow_vlan() to avoid the
creation of the default ingress rules when number of Rx queues is 0.
It also includes update of validation functions for relevant actions,
mlx5_flow_validate_action_queue() and mlx5_flow_validate_action_rss(),
to prevent creation of flow rules with these actions when number of Rx
queues is 0.
Signed-off-by: Dekel Peled <dek...@mellanox.com>
---
drivers/net/mlx5/mlx5_flow.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 0fd6ed5..f91aecd 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -846,6 +846,10 @@ uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev
*dev, int32_t priority,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't have 2 fate actions in"
" same flow");
+ if (!priv->rxqs_n)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION_CONF,
+ NULL, "No Rx queues configured");
if (queue->index >= priv->rxqs_n)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
@@ -939,6 +943,10 @@ uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev
*dev, int32_t priority,
&rss->types,
"some RSS protocols are not"
" supported");
+ if (!priv->rxqs_n)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION_CONF,
+ NULL, "No Rx queues configured");
for (i = 0; i != rss->queue_num; ++i) {
if (!(*priv->rxqs)[rss->queue[i]])
return rte_flow_error_set
@@ -2325,8 +2333,7 @@ struct rte_flow *
unsigned int i;
if (!priv->reta_idx_n || !priv->rxqs_n) {
- rte_errno = EINVAL;
- return -rte_errno;
+ return 0;
}
for (i = 0; i != priv->reta_idx_n; ++i)
queue[i] = (*priv->reta_idx)[i];
--
1.8.3.1
