drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h - third_party/linux - Git at Google

 /*
  * drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
  * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
  * Copyright (c) 2017 Arkadi Sharshevsky <arkadis@mellanox.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the names of the copyright holders nor the names of its
  *    contributors may be used to endorse or promote products derived from
  *    this software without specific prior written permission.
  *
  * Alternatively, this software may be distributed under the terms of the
  * GNU General Public License ("GPL") version 2 as published by the Free
  * Software Foundation.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */

 #ifndef _MLXSW_ROUTER_H_
 #define _MLXSW_ROUTER_H_

 #include "spectrum.h"
 #include "reg.h"

 enum mlxsw_sp_l3proto {
 	MLXSW_SP_L3_PROTO_IPV4,
 	MLXSW_SP_L3_PROTO_IPV6,
 #define MLXSW_SP_L3_PROTO_MAX	(MLXSW_SP_L3_PROTO_IPV6 + 1)
 };

 union mlxsw_sp_l3addr {
 	__be32 addr4;
 	struct in6_addr addr6;
 };

 struct mlxsw_sp_rif_ipip_lb;
 struct mlxsw_sp_rif_ipip_lb_config {
 	enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
 	u32 okey;
 	enum mlxsw_sp_l3proto ul_protocol; /* Underlay. */
 	union mlxsw_sp_l3addr saddr;
 };

 enum mlxsw_sp_rif_counter_dir {
 	MLXSW_SP_RIF_COUNTER_INGRESS,
 	MLXSW_SP_RIF_COUNTER_EGRESS,
 };

 struct mlxsw_sp_neigh_entry;
 struct mlxsw_sp_nexthop;
 struct mlxsw_sp_ipip_entry;

 struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp,
 					   u16 rif_index);
 u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif);
 u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *rif);
 u16 mlxsw_sp_ipip_lb_ul_vr_id(const struct mlxsw_sp_rif_ipip_lb *rif);
 u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev);
 int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif);
 u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp);
 const struct net_device *mlxsw_sp_rif_dev(const struct mlxsw_sp_rif *rif);
 int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp,
 				   struct mlxsw_sp_rif *rif,
 				   enum mlxsw_sp_rif_counter_dir dir,
 				   u64 *cnt);
 void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp,
 			       struct mlxsw_sp_rif *rif,
 			       enum mlxsw_sp_rif_counter_dir dir);
 int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp,
 			       struct mlxsw_sp_rif *rif,
 			       enum mlxsw_sp_rif_counter_dir dir);
 struct mlxsw_sp_neigh_entry *
 mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif,
 			struct mlxsw_sp_neigh_entry *neigh_entry);
 int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry);
 unsigned char *
 mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry);
 u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry);
 struct in6_addr *
 mlxsw_sp_neigh6_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry);

 #define mlxsw_sp_rif_neigh_for_each(neigh_entry, rif)				\
 	for (neigh_entry = mlxsw_sp_rif_neigh_next(rif, NULL); neigh_entry;	\
 	     neigh_entry = mlxsw_sp_rif_neigh_next(rif, neigh_entry))
 int mlxsw_sp_neigh_counter_get(struct mlxsw_sp *mlxsw_sp,
 			       struct mlxsw_sp_neigh_entry *neigh_entry,
 			       u64 *p_counter);
 void
 mlxsw_sp_neigh_entry_counter_update(struct mlxsw_sp *mlxsw_sp,
 				    struct mlxsw_sp_neigh_entry *neigh_entry,
 				    bool adding);
 bool mlxsw_sp_neigh_ipv6_ignore(struct mlxsw_sp_neigh_entry *neigh_entry);
 int __mlxsw_sp_ipip_entry_update_tunnel(struct mlxsw_sp *mlxsw_sp,
 					struct mlxsw_sp_ipip_entry *ipip_entry,
 					bool recreate_loopback,
 					bool keep_encap,
 					bool update_nexthops,
 					struct netlink_ext_ack *extack);
 void mlxsw_sp_ipip_entry_demote_tunnel(struct mlxsw_sp *mlxsw_sp,
 				       struct mlxsw_sp_ipip_entry *ipip_entry);
 bool
 mlxsw_sp_ipip_demote_tunnel_by_saddr(struct mlxsw_sp *mlxsw_sp,
 				     enum mlxsw_sp_l3proto ul_proto,
 				     union mlxsw_sp_l3addr saddr,
 				     u32 ul_tb_id,
 				     const struct mlxsw_sp_ipip_entry *except);
 struct mlxsw_sp_nexthop *mlxsw_sp_nexthop_next(struct mlxsw_sp_router *router,
 					       struct mlxsw_sp_nexthop *nh);
 bool mlxsw_sp_nexthop_offload(struct mlxsw_sp_nexthop *nh);
 unsigned char *mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop *nh);
 int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index,
 			     u32 *p_adj_size, u32 *p_adj_hash_index);
 struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh);
 bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh);
 #define mlxsw_sp_nexthop_for_each(nh, router)				\
 	for (nh = mlxsw_sp_nexthop_next(router, NULL); nh;		\
 	     nh = mlxsw_sp_nexthop_next(router, nh))
 int mlxsw_sp_nexthop_counter_get(struct mlxsw_sp *mlxsw_sp,
 				 struct mlxsw_sp_nexthop *nh, u64 *p_counter);
 int mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
 			    struct mlxsw_sp_nexthop *nh);
 void mlxsw_sp_nexthop_counter_alloc(struct mlxsw_sp *mlxsw_sp,
 				    struct mlxsw_sp_nexthop *nh);
 void mlxsw_sp_nexthop_counter_free(struct mlxsw_sp *mlxsw_sp,
 				   struct mlxsw_sp_nexthop *nh);

 static inline bool mlxsw_sp_l3addr_eq(const union mlxsw_sp_l3addr *addr1,
 				      const union mlxsw_sp_l3addr *addr2)
 {
 	return !memcmp(addr1, addr2, sizeof(*addr1));
 }

 #endif /* _MLXSW_ROUTER_H_*/
	/*
	* drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
	* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
	* Copyright (c) 2017 Arkadi Sharshevsky <arkadis@mellanox.com>
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. Neither the names of the copyright holders nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* Alternatively, this software may be distributed under the terms of the
	* GNU General Public License ("GPL") version 2 as published by the Free
	* Software Foundation.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGE.
	*/

	#ifndef _MLXSW_ROUTER_H_
	#define _MLXSW_ROUTER_H_

	#include "spectrum.h"
	#include "reg.h"

	enum mlxsw_sp_l3proto {
	MLXSW_SP_L3_PROTO_IPV4,
	MLXSW_SP_L3_PROTO_IPV6,
	#define MLXSW_SP_L3_PROTO_MAX (MLXSW_SP_L3_PROTO_IPV6 + 1)
	};

	union mlxsw_sp_l3addr {
	__be32 addr4;
	struct in6_addr addr6;
	};

	struct mlxsw_sp_rif_ipip_lb;
	struct mlxsw_sp_rif_ipip_lb_config {
	enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
	u32 okey;
	enum mlxsw_sp_l3proto ul_protocol; /* Underlay. */
	union mlxsw_sp_l3addr saddr;
	};

	enum mlxsw_sp_rif_counter_dir {
	MLXSW_SP_RIF_COUNTER_INGRESS,
	MLXSW_SP_RIF_COUNTER_EGRESS,
	};

	struct mlxsw_sp_neigh_entry;
	struct mlxsw_sp_nexthop;
	struct mlxsw_sp_ipip_entry;

	struct mlxsw_sp_rif mlxsw_sp_rif_by_index(const struct mlxsw_sp mlxsw_sp,
	u16 rif_index);
	u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif);
	u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *rif);
	u16 mlxsw_sp_ipip_lb_ul_vr_id(const struct mlxsw_sp_rif_ipip_lb *rif);
	u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev);
	int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif);
	u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp);
	const struct net_device mlxsw_sp_rif_dev(const struct mlxsw_sp_rif rif);
	int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_rif *rif,
	enum mlxsw_sp_rif_counter_dir dir,
	u64 *cnt);
	void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_rif *rif,
	enum mlxsw_sp_rif_counter_dir dir);
	int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_rif *rif,
	enum mlxsw_sp_rif_counter_dir dir);
	struct mlxsw_sp_neigh_entry *
	mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif,
	struct mlxsw_sp_neigh_entry *neigh_entry);
	int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry);
	unsigned char *
	mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry);
	u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry);
	struct in6_addr *
	mlxsw_sp_neigh6_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry);

	#define mlxsw_sp_rif_neigh_for_each(neigh_entry, rif) \
	for (neigh_entry = mlxsw_sp_rif_neigh_next(rif, NULL); neigh_entry; \
	neigh_entry = mlxsw_sp_rif_neigh_next(rif, neigh_entry))
	int mlxsw_sp_neigh_counter_get(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_neigh_entry *neigh_entry,
	u64 *p_counter);
	void
	mlxsw_sp_neigh_entry_counter_update(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_neigh_entry *neigh_entry,
	bool adding);
	bool mlxsw_sp_neigh_ipv6_ignore(struct mlxsw_sp_neigh_entry *neigh_entry);
	int __mlxsw_sp_ipip_entry_update_tunnel(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_ipip_entry *ipip_entry,
	bool recreate_loopback,
	bool keep_encap,
	bool update_nexthops,
	struct netlink_ext_ack *extack);
	void mlxsw_sp_ipip_entry_demote_tunnel(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_ipip_entry *ipip_entry);
	bool
	mlxsw_sp_ipip_demote_tunnel_by_saddr(struct mlxsw_sp *mlxsw_sp,
	enum mlxsw_sp_l3proto ul_proto,
	union mlxsw_sp_l3addr saddr,
	u32 ul_tb_id,
	const struct mlxsw_sp_ipip_entry *except);
	struct mlxsw_sp_nexthop mlxsw_sp_nexthop_next(struct mlxsw_sp_router router,
	struct mlxsw_sp_nexthop *nh);
	bool mlxsw_sp_nexthop_offload(struct mlxsw_sp_nexthop *nh);
	unsigned char mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop nh);
	int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop nh, u32 p_adj_index,
	u32 p_adj_size, u32 p_adj_hash_index);
	struct mlxsw_sp_rif mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop nh);
	bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh);
	#define mlxsw_sp_nexthop_for_each(nh, router) \
	for (nh = mlxsw_sp_nexthop_next(router, NULL); nh; \
	nh = mlxsw_sp_nexthop_next(router, nh))
	int mlxsw_sp_nexthop_counter_get(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_nexthop nh, u64 p_counter);
	int mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
	struct mlxsw_sp_nexthop *nh);
	void mlxsw_sp_nexthop_counter_alloc(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_nexthop *nh);
	void mlxsw_sp_nexthop_counter_free(struct mlxsw_sp *mlxsw_sp,
	struct mlxsw_sp_nexthop *nh);

	static inline bool mlxsw_sp_l3addr_eq(const union mlxsw_sp_l3addr *addr1,
	const union mlxsw_sp_l3addr *addr2)
	{
	return !memcmp(addr1, addr2, sizeof(*addr1));
	}

	#endif /* _MLXSW_ROUTER_H_*/