1 /*
2  * drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
3  * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
4  * Copyright (c) 2017 Arkadi Sharshevsky <arkadis@mellanox.com>
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. Neither the names of the copyright holders nor the names of its
15  *    contributors may be used to endorse or promote products derived from
16  *    this software without specific prior written permission.
17  *
18  * Alternatively, this software may be distributed under the terms of the
19  * GNU General Public License ("GPL") version 2 as published by the Free
20  * Software Foundation.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 #ifndef _MLXSW_ROUTER_H_
36 #define _MLXSW_ROUTER_H_
37 
38 #include "spectrum.h"
39 #include "reg.h"
40 
41 enum mlxsw_sp_l3proto {
42 	MLXSW_SP_L3_PROTO_IPV4,
43 	MLXSW_SP_L3_PROTO_IPV6,
44 };
45 
46 union mlxsw_sp_l3addr {
47 	__be32 addr4;
48 	struct in6_addr addr6;
49 };
50 
51 struct mlxsw_sp_rif_ipip_lb;
52 struct mlxsw_sp_rif_ipip_lb_config {
53 	enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
54 	u32 okey;
55 	enum mlxsw_sp_l3proto ul_protocol; /* Underlay. */
56 	union mlxsw_sp_l3addr saddr;
57 };
58 
59 enum mlxsw_sp_rif_counter_dir {
60 	MLXSW_SP_RIF_COUNTER_INGRESS,
61 	MLXSW_SP_RIF_COUNTER_EGRESS,
62 };
63 
64 struct mlxsw_sp_neigh_entry;
65 struct mlxsw_sp_nexthop;
66 struct mlxsw_sp_ipip_entry;
67 
68 struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp,
69 					   u16 rif_index);
70 u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif);
71 u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *rif);
72 u16 mlxsw_sp_ipip_lb_ul_vr_id(const struct mlxsw_sp_rif_ipip_lb *rif);
73 u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev);
74 int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif);
75 u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp);
76 const struct net_device *mlxsw_sp_rif_dev(const struct mlxsw_sp_rif *rif);
77 int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp,
78 				   struct mlxsw_sp_rif *rif,
79 				   enum mlxsw_sp_rif_counter_dir dir,
80 				   u64 *cnt);
81 void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp,
82 			       struct mlxsw_sp_rif *rif,
83 			       enum mlxsw_sp_rif_counter_dir dir);
84 int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp,
85 			       struct mlxsw_sp_rif *rif,
86 			       enum mlxsw_sp_rif_counter_dir dir);
87 struct mlxsw_sp_neigh_entry *
88 mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif,
89 			struct mlxsw_sp_neigh_entry *neigh_entry);
90 int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry);
91 unsigned char *
92 mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry);
93 u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry);
94 struct in6_addr *
95 mlxsw_sp_neigh6_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry);
96 
97 #define mlxsw_sp_rif_neigh_for_each(neigh_entry, rif)				\
98 	for (neigh_entry = mlxsw_sp_rif_neigh_next(rif, NULL); neigh_entry;	\
99 	     neigh_entry = mlxsw_sp_rif_neigh_next(rif, neigh_entry))
100 int mlxsw_sp_neigh_counter_get(struct mlxsw_sp *mlxsw_sp,
101 			       struct mlxsw_sp_neigh_entry *neigh_entry,
102 			       u64 *p_counter);
103 void
104 mlxsw_sp_neigh_entry_counter_update(struct mlxsw_sp *mlxsw_sp,
105 				    struct mlxsw_sp_neigh_entry *neigh_entry,
106 				    bool adding);
107 bool mlxsw_sp_neigh_ipv6_ignore(struct mlxsw_sp_neigh_entry *neigh_entry);
108 int __mlxsw_sp_ipip_entry_update_tunnel(struct mlxsw_sp *mlxsw_sp,
109 					struct mlxsw_sp_ipip_entry *ipip_entry,
110 					bool recreate_loopback,
111 					bool keep_encap,
112 					bool update_nexthops,
113 					struct netlink_ext_ack *extack);
114 void mlxsw_sp_ipip_entry_demote_tunnel(struct mlxsw_sp *mlxsw_sp,
115 				       struct mlxsw_sp_ipip_entry *ipip_entry);
116 bool
117 mlxsw_sp_ipip_demote_tunnel_by_saddr(struct mlxsw_sp *mlxsw_sp,
118 				     enum mlxsw_sp_l3proto ul_proto,
119 				     union mlxsw_sp_l3addr saddr,
120 				     u32 ul_tb_id,
121 				     const struct mlxsw_sp_ipip_entry *except);
122 struct mlxsw_sp_nexthop *mlxsw_sp_nexthop_next(struct mlxsw_sp_router *router,
123 					       struct mlxsw_sp_nexthop *nh);
124 bool mlxsw_sp_nexthop_offload(struct mlxsw_sp_nexthop *nh);
125 unsigned char *mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop *nh);
126 int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index,
127 			     u32 *p_adj_size, u32 *p_adj_hash_index);
128 struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh);
129 bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh);
130 #define mlxsw_sp_nexthop_for_each(nh, router)				\
131 	for (nh = mlxsw_sp_nexthop_next(router, NULL); nh;		\
132 	     nh = mlxsw_sp_nexthop_next(router, nh))
133 int mlxsw_sp_nexthop_counter_get(struct mlxsw_sp *mlxsw_sp,
134 				 struct mlxsw_sp_nexthop *nh, u64 *p_counter);
135 int mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
136 			    struct mlxsw_sp_nexthop *nh);
137 void mlxsw_sp_nexthop_counter_alloc(struct mlxsw_sp *mlxsw_sp,
138 				    struct mlxsw_sp_nexthop *nh);
139 void mlxsw_sp_nexthop_counter_free(struct mlxsw_sp *mlxsw_sp,
140 				   struct mlxsw_sp_nexthop *nh);
141 
142 static inline bool mlxsw_sp_l3addr_eq(const union mlxsw_sp_l3addr *addr1,
143 				      const union mlxsw_sp_l3addr *addr2)
144 {
145 	return !memcmp(addr1, addr2, sizeof(*addr1));
146 }
147 
148 #endif /* _MLXSW_ROUTER_H_*/
149