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Commit 8a41d845 authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

mlxsw: spectrum_flower: Add support for tcp flags 



Allow to offload rules that contain tcp flags within the mask.

Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dea2d645

drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c

+1 −0
Original line number Diff line number Diff line
@@ -983,6 +983,7 @@ static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv4[] = { 
	MLXSW_AFK_ELEMENT_SRC_L4_PORT,

	MLXSW_AFK_ELEMENT_VID,

	MLXSW_AFK_ELEMENT_PCP,

	MLXSW_AFK_ELEMENT_TCP_FLAGS,

};



static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv6[] = {

drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c

+29 −0
Original line number Diff line number Diff line
@@ -178,6 +178,32 @@ static int mlxsw_sp_flower_parse_ports(struct mlxsw_sp *mlxsw_sp, 
	return 0;

}



static int mlxsw_sp_flower_parse_tcp(struct mlxsw_sp *mlxsw_sp,

				     struct mlxsw_sp_acl_rule_info *rulei,

				     struct tc_cls_flower_offload *f,

				     u8 ip_proto)

{

	struct flow_dissector_key_tcp *key, *mask;



	if (!dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_TCP))

		return 0;



	if (ip_proto != IPPROTO_TCP) {

		dev_err(mlxsw_sp->bus_info->dev, "TCP keys supported only for TCP\n");

		return -EINVAL;

	}



	key = skb_flow_dissector_target(f->dissector,

					FLOW_DISSECTOR_KEY_TCP,

					f->key);

	mask = skb_flow_dissector_target(f->dissector,

					 FLOW_DISSECTOR_KEY_TCP,

					 f->mask);

	mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_TCP_FLAGS,

				       ntohs(key->flags), ntohs(mask->flags));

	return 0;

}



static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,

				 struct net_device *dev,

				 struct mlxsw_sp_acl_rule_info *rulei,
@@ -284,6 +310,9 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp, 
		mlxsw_sp_flower_parse_ipv6(rulei, f);



	err = mlxsw_sp_flower_parse_ports(mlxsw_sp, rulei, f, ip_proto);

	if (err)

		return err;

	err = mlxsw_sp_flower_parse_tcp(mlxsw_sp, rulei, f, ip_proto);

	if (err)

		return err;