tc_tun.h

  1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
  2/* Copyright (c) 2018 Mellanox Technologies. */
  3
  4#ifndef __MLX5_EN_TC_TUNNEL_H__
  5#define __MLX5_EN_TC_TUNNEL_H__
  6
  7#include <linux/netdevice.h>
  8#include <linux/mlx5/fs.h>
  9#include <net/pkt_cls.h>
 10#include <linux/netlink.h>
 11#include "en.h"
 12#include "en_rep.h"
 13
 14#ifdef CONFIG_MLX5_ESWITCH
 15
 16enum {
 17	MLX5E_TC_TUNNEL_TYPE_UNKNOWN,
 18	MLX5E_TC_TUNNEL_TYPE_VXLAN,
 19	MLX5E_TC_TUNNEL_TYPE_GENEVE,
 20	MLX5E_TC_TUNNEL_TYPE_GRETAP,
 21	MLX5E_TC_TUNNEL_TYPE_MPLSOUDP,
 22};
 23
 24struct mlx5e_encap_key {
 25	const struct ip_tunnel_key *ip_tun_key;
 26	struct mlx5e_tc_tunnel     *tc_tunnel;
 27};
 28
 29struct mlx5e_tc_tunnel {
 30	int tunnel_type;
 31	enum mlx5_flow_match_level match_level;
 32
 33	bool (*can_offload)(struct mlx5e_priv *priv);
 34	int (*calc_hlen)(struct mlx5e_encap_entry *e);
 35	int (*init_encap_attr)(struct net_device *tunnel_dev,
 36			       struct mlx5e_priv *priv,
 37			       struct mlx5e_encap_entry *e,
 38			       struct netlink_ext_ack *extack);
 39	int (*generate_ip_tun_hdr)(char buf[],
 40				   __u8 *ip_proto,
 41				   struct mlx5e_encap_entry *e);
 42	int (*parse_udp_ports)(struct mlx5e_priv *priv,
 43			       struct mlx5_flow_spec *spec,
 44			       struct flow_cls_offload *f,
 45			       void *headers_c,
 46			       void *headers_v);
 47	int (*parse_tunnel)(struct mlx5e_priv *priv,
 48			    struct mlx5_flow_spec *spec,
 49			    struct flow_cls_offload *f,
 50			    void *headers_c,
 51			    void *headers_v);
 52	bool (*encap_info_equal)(struct mlx5e_encap_key *a,
 53				 struct mlx5e_encap_key *b);
 54	int (*get_remote_ifindex)(struct net_device *mirred_dev);
 55};
 56
 57extern struct mlx5e_tc_tunnel vxlan_tunnel;
 58extern struct mlx5e_tc_tunnel geneve_tunnel;
 59extern struct mlx5e_tc_tunnel gre_tunnel;
 60extern struct mlx5e_tc_tunnel mplsoudp_tunnel;
 61
 62struct mlx5e_tc_tunnel *mlx5e_get_tc_tun(struct net_device *tunnel_dev);
 63
 64int mlx5e_tc_tun_init_encap_attr(struct net_device *tunnel_dev,
 65				 struct mlx5e_priv *priv,
 66				 struct mlx5e_encap_entry *e,
 67				 struct netlink_ext_ack *extack);
 68
 69int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv,
 70				    struct net_device *mirred_dev,
 71				    struct mlx5e_encap_entry *e);
 72int mlx5e_tc_tun_update_header_ipv4(struct mlx5e_priv *priv,
 73				    struct net_device *mirred_dev,
 74				    struct mlx5e_encap_entry *e);
 75
 76#if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
 77int mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv,
 78				    struct net_device *mirred_dev,
 79				    struct mlx5e_encap_entry *e);
 80int mlx5e_tc_tun_update_header_ipv6(struct mlx5e_priv *priv,
 81				    struct net_device *mirred_dev,
 82				    struct mlx5e_encap_entry *e);
 83#else
 84static inline int
 85mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv,
 86				struct net_device *mirred_dev,
 87				struct mlx5e_encap_entry *e)
 88{ return -EOPNOTSUPP; }
 89static inline int
 90mlx5e_tc_tun_update_header_ipv6(struct mlx5e_priv *priv,
 91				struct net_device *mirred_dev,
 92				struct mlx5e_encap_entry *e)
 93{ return -EOPNOTSUPP; }
 94#endif
 95int mlx5e_tc_tun_route_lookup(struct mlx5e_priv *priv,
 96			      struct mlx5_flow_spec *spec,
 97			      struct mlx5_flow_attr *attr,
 98			      struct net_device *filter_dev);
 99
100bool mlx5e_tc_tun_device_to_offload(struct mlx5e_priv *priv,
101				    struct net_device *netdev);
102
103int mlx5e_tc_tun_parse(struct net_device *filter_dev,
104		       struct mlx5e_priv *priv,
105		       struct mlx5_flow_spec *spec,
106		       struct flow_cls_offload *f,
107		       u8 *match_level);
108
109int mlx5e_tc_tun_parse_udp_ports(struct mlx5e_priv *priv,
110				 struct mlx5_flow_spec *spec,
111				 struct flow_cls_offload *f,
112				 void *headers_c,
113				 void *headers_v);
114
115bool mlx5e_tc_tun_encap_info_equal_generic(struct mlx5e_encap_key *a,
116					   struct mlx5e_encap_key *b);
117
118bool mlx5e_tc_tun_encap_info_equal_options(struct mlx5e_encap_key *a,
119					   struct mlx5e_encap_key *b,
120					   u32 tun_type);
121#endif /* CONFIG_MLX5_ESWITCH */
122
123#endif //__MLX5_EN_TC_TUNNEL_H__