net/mlx5e: Add IPsec and ASO syndromes check in HW

After IPsec decryption it isn't enough to only check the IPsec syndrome
but need to also check the ASO syndrome in order to verify that the
operation was actually successful.

Verify that both syndromes are actually zero and in case not drop the
packet and increment the appropriate flow counter for the drop reason.

Fixes: 6b5c45e1 ("net/mlx5e: Configure IPsec packet offload flow steering")
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h

@@ -189,11 +189,19 @@ struct mlx5e_ipsec_ft {
 	u32 refcnt;
 };
 
+struct mlx5e_ipsec_drop {
+	struct mlx5_flow_handle *rule;
+	struct mlx5_fc *fc;
+};
+
 struct mlx5e_ipsec_rule {
 	struct mlx5_flow_handle *rule;
 	struct mlx5_modify_hdr *modify_hdr;
 	struct mlx5_pkt_reformat *pkt_reformat;
 	struct mlx5_fc *fc;
+	struct mlx5e_ipsec_drop replay;
+	struct mlx5e_ipsec_drop auth;
+	struct mlx5e_ipsec_drop trailer;
 };
 
 struct mlx5e_ipsec_miss {