net/mlx5: fix RSS action for tunneled packets
net/mlx5: fix RSS action for tunneled packets

The flow engine in mlx5 searches for the most specific layer in the
pattern in order to set the flow rule priority properly.

Since the RSS can be currently performed only for the outer headers, avoid
updating the layer for the inner headers.

Fixes: 8086cf08b2f0 ("net/mlx5: handle RSS hash configuration in RSS flow")

Signed-off-by: Shahaf Shuler <59427d49da6f2b944fbf4cb5ee70ef3ac25f744f@mellanox.com>
Acked-by: Nelio Laranjeiro <2f8dd9032d5b85ca4b53dec8ce664eb6998836be@6wind.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk