net/mlx5: fix verbs flow counter query

Function flow_verbs_counter_query() was recently modified.
The new 'if' condition uses a pointer to flow counter-set.
This pointer is valid only if flow contains a count action.

This patch adds check to verify the pointer is valid.

Fixes: d85c7b5ea59f ("net/mlx5: split hairpin flows")

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>

diff --git a/drivers/net/mlx5/mlx5_flow_verbs.c b/drivers/net/mlx5/mlx5_flow_verbs.c
index ea85fa1..c787c98 100644 (file)
--- a/drivers/net/mlx5/mlx5_flow_verbs.c
+++ b/drivers/net/mlx5/mlx5_flow_verbs.c
@@ -191,7 +191,7 @@ flow_verbs_counter_query(struct rte_eth_dev *dev __rte_unused,
 {
 #if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) || \
        defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45)
-       if (flow->counter->cs) {
+       if (flow->counter && flow->counter->cs) {
                struct rte_flow_query_count *qc = data;
                uint64_t counters[2] = {0, 0};
 #if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42)