IB/mlx5: Add HW counter called rx_dct_connect

The rx_dct_connect counter shows the number of received connection
requests for the associated DCTs.
Signed-off-by: Shetu Ayalew <shetu@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Link: https://lore.kernel.org/r/01cd24cd7f591734741309921fdc01fc770d84a8.1690121941.git.leon@kernel.orgSigned-off-by: Leon Romanovsky <leonro@nvidia.com>

drivers/infiniband/hw/mlx5/counters.c

@@ -27,6 +27,7 @@ static const struct mlx5_ib_counter basic_q_cnts[] = {
 	INIT_Q_COUNTER(rx_write_requests),
 	INIT_Q_COUNTER(rx_read_requests),
 	INIT_Q_COUNTER(rx_atomic_requests),
+	INIT_Q_COUNTER(rx_dct_connect),
 	INIT_Q_COUNTER(out_of_buffer),
 };
 
@@ -46,6 +47,7 @@ static const struct mlx5_ib_counter vport_basic_q_cnts[] = {
 	INIT_VPORT_Q_COUNTER(rx_write_requests),
 	INIT_VPORT_Q_COUNTER(rx_read_requests),
 	INIT_VPORT_Q_COUNTER(rx_atomic_requests),
+	INIT_VPORT_Q_COUNTER(rx_dct_connect),
 	INIT_VPORT_Q_COUNTER(out_of_buffer),
 };