Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c556cd28 authored by Arkadi Sharshevsky's avatar Arkadi Sharshevsky Committed by David S. Miller
Browse files

mlxsw: spectrum_router: Add helpers for nexthop access 



This is done as a preparation before introducing the ability to dump the
adjacency table via dpipe, and to count the table size. The current table
implementation avoids tunnel entries, thus a helper for checking if
the nexthop group contains tunnel entries is also provided. The mlxsw's
nexthop representative struct stays private to the router module.

Signed-off-by: default avatarArkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ec2437f4

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

+71 −0
Original line number Diff line number Diff line
@@ -2068,6 +2068,77 @@ struct mlxsw_sp_nexthop_group { 
#define nh_rif	nexthops[0].rif

};



struct mlxsw_sp_nexthop *mlxsw_sp_nexthop_next(struct mlxsw_sp_router *router,

					       struct mlxsw_sp_nexthop *nh)

{

	if (!nh) {

		if (list_empty(&router->nexthop_list))

			return NULL;

		else

			return list_first_entry(&router->nexthop_list,

						typeof(*nh), router_list_node);

	}

	if (list_is_last(&nh->router_list_node, &router->nexthop_list))

		return NULL;

	return list_next_entry(nh, router_list_node);

}



bool mlxsw_sp_nexthop_offload(struct mlxsw_sp_nexthop *nh)

{

	return nh->offloaded;

}



unsigned char *mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop *nh)

{

	if (!nh->offloaded)

		return NULL;

	return nh->neigh_entry->ha;

}



int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index,

			     u32 *p_adj_hash_index)

{

	struct mlxsw_sp_nexthop_group *nh_grp = nh->nh_grp;

	u32 adj_hash_index = 0;

	int i;



	if (!nh->offloaded || !nh_grp->adj_index_valid)

		return -EINVAL;



	*p_adj_index = nh_grp->adj_index;



	for (i = 0; i < nh_grp->count; i++) {

		struct mlxsw_sp_nexthop *nh_iter = &nh_grp->nexthops[i];



		if (nh_iter == nh)

			break;

		if (nh_iter->offloaded)

			adj_hash_index++;

	}



	*p_adj_hash_index = adj_hash_index;

	return 0;

}



struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh)

{

	return nh->rif;

}



bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh)

{

	struct mlxsw_sp_nexthop_group *nh_grp = nh->nh_grp;

	int i;



	for (i = 0; i < nh_grp->count; i++) {

		struct mlxsw_sp_nexthop *nh_iter = &nh_grp->nexthops[i];



		if (nh_iter->type == MLXSW_SP_NEXTHOP_TYPE_IPIP)

			return true;

	}

	return false;

}



static struct fib_info *

mlxsw_sp_nexthop4_group_fi(const struct mlxsw_sp_nexthop_group *nh_grp)

{

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h

+12 −0
Original line number Diff line number Diff line
@@ -62,6 +62,7 @@ enum mlxsw_sp_rif_counter_dir { 
};



struct mlxsw_sp_neigh_entry;

struct mlxsw_sp_nexthop;



struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp,

					   u16 rif_index);
@@ -108,5 +109,16 @@ union mlxsw_sp_l3addr 
mlxsw_sp_ipip_netdev_daddr(enum mlxsw_sp_l3proto proto,

			   const struct net_device *ol_dev);

__be32 mlxsw_sp_ipip_netdev_daddr4(const struct net_device *ol_dev);

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_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))



#endif /* _MLXSW_ROUTER_H_*/