net/mlx5e: CT: Fix ipv6 nat header rewrite actions

Set the ipv6 word fields according to the hardware definitions.

Fixes: ac991b48 ("net/mlx5e: CT: Offload established flows")
Signed-off-by: Oz Shlomo <ozsh@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c

@@ -328,21 +328,21 @@ mlx5_tc_ct_parse_mangle_to_mod_act(struct flow_action_entry *act,
 
 	case FLOW_ACT_MANGLE_HDR_TYPE_IP6:
 		MLX5_SET(set_action_in, modact, length, 0);
-		if (offset == offsetof(struct ipv6hdr, saddr))
+		if (offset == offsetof(struct ipv6hdr, saddr) + 12)
 			field = MLX5_ACTION_IN_FIELD_OUT_SIPV6_31_0;
-		else if (offset == offsetof(struct ipv6hdr, saddr) + 4)
-			field = MLX5_ACTION_IN_FIELD_OUT_SIPV6_63_32;
 		else if (offset == offsetof(struct ipv6hdr, saddr) + 8)
+			field = MLX5_ACTION_IN_FIELD_OUT_SIPV6_63_32;
+		else if (offset == offsetof(struct ipv6hdr, saddr) + 4)
 			field = MLX5_ACTION_IN_FIELD_OUT_SIPV6_95_64;
-		else if (offset == offsetof(struct ipv6hdr, saddr) + 12)
+		else if (offset == offsetof(struct ipv6hdr, saddr))
 			field = MLX5_ACTION_IN_FIELD_OUT_SIPV6_127_96;
-		else if (offset == offsetof(struct ipv6hdr, daddr))
+		else if (offset == offsetof(struct ipv6hdr, daddr) + 12)
 			field = MLX5_ACTION_IN_FIELD_OUT_DIPV6_31_0;
-		else if (offset == offsetof(struct ipv6hdr, daddr) + 4)
-			field = MLX5_ACTION_IN_FIELD_OUT_DIPV6_63_32;
 		else if (offset == offsetof(struct ipv6hdr, daddr) + 8)
+			field = MLX5_ACTION_IN_FIELD_OUT_DIPV6_63_32;
+		else if (offset == offsetof(struct ipv6hdr, daddr) + 4)
 			field = MLX5_ACTION_IN_FIELD_OUT_DIPV6_95_64;
-		else if (offset == offsetof(struct ipv6hdr, daddr) + 12)
+		else if (offset == offsetof(struct ipv6hdr, daddr))
 			field = MLX5_ACTION_IN_FIELD_OUT_DIPV6_127_96;
 		else
 			return -EOPNOTSUPP;