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mlxsw: spectrum_dpipe: Add initial support for the router adjacency table 

Add initial support for router adjacency table. The table does lookup
based on the nexthop-group index and the local nexthop offset. After
locating the nexthop entry it sets the destination MAC address and the
egress RIF.

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 10:32:26 +02:00 committed by David S. Miller
parent c556cd2893
commit c538adb3c6
2 changed files with 100 additions and 1 deletions
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100
drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
View File

@ -841,6 +841,97 @@ static void mlxsw_sp_dpipe_host6_table_fini(struct mlxsw_sp *mlxsw_sp)
MLXSW_SP_DPIPE_TABLE_NAME_HOST6);
}
static int mlxsw_sp_dpipe_table_adj_matches_dump(void *priv,
struct sk_buff *skb)
{
struct devlink_dpipe_match match = {0};
int err;
match.type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;
match.header = &mlxsw_sp_dpipe_header_metadata;
match.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ADJ_INDEX;
err = devlink_dpipe_match_put(skb, &match);
if (err)
return err;
match.type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;
match.header = &mlxsw_sp_dpipe_header_metadata;
match.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ADJ_HASH_INDEX;
return devlink_dpipe_match_put(skb, &match);
}
static int mlxsw_sp_dpipe_table_adj_actions_dump(void *priv,
struct sk_buff *skb)
{
struct devlink_dpipe_action action = {0};
int err;
action.type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;
action.header = &devlink_dpipe_header_ethernet;
action.field_id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC;
err = devlink_dpipe_action_put(skb, &action);
if (err)
return err;
action.type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;
action.header = &mlxsw_sp_dpipe_header_metadata;
action.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ERIF_PORT;
return devlink_dpipe_action_put(skb, &action);
}
static u64 mlxsw_sp_dpipe_table_adj_size(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_nexthop *nh;
u64 size = 0;
mlxsw_sp_nexthop_for_each(nh, mlxsw_sp->router)
if (mlxsw_sp_nexthop_offload(nh) &&
!mlxsw_sp_nexthop_group_has_ipip(nh))
size++;
return size;
}
static u64
mlxsw_sp_dpipe_table_adj_size_get(void *priv)
{
struct mlxsw_sp *mlxsw_sp = priv;
u64 size;
rtnl_lock();
size = mlxsw_sp_dpipe_table_adj_size(mlxsw_sp);
rtnl_unlock();
return size;
}
static struct devlink_dpipe_table_ops mlxsw_sp_dpipe_table_adj_ops = {
.matches_dump = mlxsw_sp_dpipe_table_adj_matches_dump,
.actions_dump = mlxsw_sp_dpipe_table_adj_actions_dump,
.size_get = mlxsw_sp_dpipe_table_adj_size_get,
};
static int mlxsw_sp_dpipe_adj_table_init(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
return devlink_dpipe_table_register(devlink,
MLXSW_SP_DPIPE_TABLE_NAME_ADJ,
&mlxsw_sp_dpipe_table_adj_ops,
mlxsw_sp, false);
}
static void mlxsw_sp_dpipe_adj_table_fini(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
devlink_dpipe_table_unregister(devlink,
MLXSW_SP_DPIPE_TABLE_NAME_ADJ);
}
int mlxsw_sp_dpipe_init(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
@ -861,8 +952,14 @@ int mlxsw_sp_dpipe_init(struct mlxsw_sp *mlxsw_sp)
err = mlxsw_sp_dpipe_host6_table_init(mlxsw_sp);
if (err)
goto err_host6_table_init;
return 0;
err = mlxsw_sp_dpipe_adj_table_init(mlxsw_sp);
if (err)
goto err_adj_table_init;
return 0;
err_adj_table_init:
mlxsw_sp_dpipe_host6_table_fini(mlxsw_sp);
err_host6_table_init:
mlxsw_sp_dpipe_host4_table_fini(mlxsw_sp);
err_host4_table_init:
@ -876,6 +973,7 @@ void mlxsw_sp_dpipe_fini(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
mlxsw_sp_dpipe_adj_table_fini(mlxsw_sp);
mlxsw_sp_dpipe_host6_table_fini(mlxsw_sp);
mlxsw_sp_dpipe_host4_table_fini(mlxsw_sp);
mlxsw_sp_dpipe_erif_table_fini(mlxsw_sp);

1
drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.h
View File

@ -56,5 +56,6 @@ static inline void mlxsw_sp_dpipe_fini(struct mlxsw_sp *mlxsw_sp)
#define MLXSW_SP_DPIPE_TABLE_NAME_ERIF "mlxsw_erif"
#define MLXSW_SP_DPIPE_TABLE_NAME_HOST4 "mlxsw_host4"
#define MLXSW_SP_DPIPE_TABLE_NAME_HOST6 "mlxsw_host6"
#define MLXSW_SP_DPIPE_TABLE_NAME_ADJ "mlxsw_adj"
#endif /* _MLXSW_PIPELINE_H_*/