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Commit fcbca821 authored by Or Gerlitz's avatar Or Gerlitz Committed by David S. Miller
Browse files

mlxsw: spectrum_flower: Add support for ip ttl 



Support offloading rules that match on ip ttl.

Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 046759a6

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

+35 −2
Original line number Diff line number Diff line
@@ -212,11 +212,39 @@ static int mlxsw_sp_flower_parse_tcp(struct mlxsw_sp *mlxsw_sp, 
	return 0;

}



static int mlxsw_sp_flower_parse_ip(struct mlxsw_sp *mlxsw_sp,

				    struct mlxsw_sp_acl_rule_info *rulei,

				    struct tc_cls_flower_offload *f,

				    u16 n_proto)

{

	struct flow_dissector_key_ip *key, *mask;



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

		return 0;



	if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) {

		dev_err(mlxsw_sp->bus_info->dev, "IP keys supported only for IPv4/6\n");

		return -EINVAL;

	}



	key = skb_flow_dissector_target(f->dissector,

					FLOW_DISSECTOR_KEY_IP,

					f->key);

	mask = skb_flow_dissector_target(f->dissector,

					 FLOW_DISSECTOR_KEY_IP,

					 f->mask);

	mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_TTL_,

				       key->ttl, mask->ttl);

	return 0;

}



static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,

				 struct net_device *dev,

				 struct mlxsw_sp_acl_rule_info *rulei,

				 struct tc_cls_flower_offload *f)

{

	u16 n_proto_mask = 0;

	u16 n_proto_key = 0;

	u16 addr_type = 0;

	u8 ip_proto = 0;

	int err;
@@ -229,6 +257,7 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp, 
	      BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |

	      BIT(FLOW_DISSECTOR_KEY_PORTS) |

	      BIT(FLOW_DISSECTOR_KEY_TCP) |

	      BIT(FLOW_DISSECTOR_KEY_IP) |

	      BIT(FLOW_DISSECTOR_KEY_VLAN))) {

		dev_err(mlxsw_sp->bus_info->dev, "Unsupported key\n");

		return -EOPNOTSUPP;
@@ -253,8 +282,8 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp, 
			skb_flow_dissector_target(f->dissector,

						  FLOW_DISSECTOR_KEY_BASIC,

						  f->mask);

		u16 n_proto_key = ntohs(key->n_proto);

		u16 n_proto_mask = ntohs(mask->n_proto);

		n_proto_key = ntohs(key->n_proto);

		n_proto_mask = ntohs(mask->n_proto);



		if (n_proto_key == ETH_P_ALL) {

			n_proto_key = 0;
@@ -324,6 +353,10 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp, 
	if (err)

		return err;



	err = mlxsw_sp_flower_parse_ip(mlxsw_sp, rulei, f, n_proto_key & n_proto_mask);

	if (err)

		return err;



	return mlxsw_sp_flower_parse_actions(mlxsw_sp, dev, rulei, f->exts);

}