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mlxsw: spectrum_router: Add helpers for nexthop access

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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: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arkadi Sharshevsky
2017-09-25 10:32:25 +02:00
committed by David S. Miller
parent ec2437f42b
commit c556cd2893
2 changed files with 83 additions and 0 deletions
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71
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
View File

@@ -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)
{

12
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
View File

@@ -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_*/