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mlxsw: spectrum_router: Add helpers for neighbor access 

This is done as a preparation before introducing the ability to dump the
host table via dpipe, and to count the table size. The mlxsw's neighbor
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 2017-08-24 08:40:04 +02:00 committed by David S. Miller
parent 3580732448
commit f17cc84d1c
2 changed files with 49 additions and 0 deletions
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36
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
View File

@ -909,6 +909,42 @@ static const struct rhashtable_params mlxsw_sp_neigh_ht_params = {
.key_len = sizeof(struct mlxsw_sp_neigh_key),
};
struct mlxsw_sp_neigh_entry *
mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif,
struct mlxsw_sp_neigh_entry *neigh_entry)
{
if (!neigh_entry) {
if (list_empty(&rif->neigh_list))
return NULL;
else
return list_first_entry(&rif->neigh_list,
typeof(*neigh_entry),
rif_list_node);
}
if (neigh_entry->rif_list_node.next == &rif->neigh_list)
return NULL;
return list_next_entry(neigh_entry, rif_list_node);
}
int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry)
{
return neigh_entry->key.n->tbl->family;
}
unsigned char *
mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry)
{
return neigh_entry->ha;
}
u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry)
{
struct neighbour *n;
n = neigh_entry->key.n;
return ntohl(*((__be32 *) n->primary_key));
}
static struct mlxsw_sp_neigh_entry *
mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n,
u16 rif)

13
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
View File

@ -42,6 +42,8 @@ enum mlxsw_sp_rif_counter_dir {
MLXSW_SP_RIF_COUNTER_EGRESS,
};
struct mlxsw_sp_neigh_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);
@ -56,5 +58,16 @@ void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp,
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);
#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))
#endif /* _MLXSW_ROUTER_H_*/