diff mbox series

[net-next,09/18] mlxsw: spectrum_router: Support RIF without device

Message ID 20190120065007.21352-10-idosch@mellanox.com
State Accepted
Delegated to: David Miller
Headers show
Series mlxsw: spectrum_router: Add GRE tunnel support for Spectrum-2 | expand

Commit Message

Ido Schimmel Jan. 20, 2019, 6:50 a.m. UTC 
From: Nir Dotan <nird@mellanox.com>

Spectrum-2 underlay RIF is merely an auxiliary RIF that points to the
virtual router used for encapsulated packets lookup. It exists only when
its overlay RIF exists but may be shared with other overlay RIFs.
Hence it is undesired to mark any device as related to it.

Therefore allow usage of NULL device when allocating RIF.

Signed-off-by: Nir Dotan <nird@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c |  2 +-
 .../net/ethernet/mellanox/mlxsw/spectrum_router.c    | 12 +++++++-----
 2 files changed, 8 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
index 41e607a14846..49933818c6f5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
@@ -220,7 +220,7 @@  mlxsw_sp_dpipe_table_erif_entries_dump(void *priv, bool counters_enabled,
 	for (; i < rif_count; i++) {
 		struct mlxsw_sp_rif *rif = mlxsw_sp_rif_by_index(mlxsw_sp, i);
 
-		if (!rif)
+		if (!rif || !mlxsw_sp_rif_dev(rif))
 			continue;
 		err = mlxsw_sp_erif_entry_get(mlxsw_sp, &entry, rif,
 					      counters_enabled);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 2cfbba810527..4316afc2c043 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -80,7 +80,7 @@  struct mlxsw_sp_router {
 struct mlxsw_sp_rif {
 	struct list_head nexthop_list;
 	struct list_head neigh_list;
-	struct net_device *dev;
+	struct net_device *dev; /* NULL for underlay RIF */
 	struct mlxsw_sp_fid *fid;
 	unsigned char addr[ETH_ALEN];
 	int mtu;
@@ -6224,10 +6224,12 @@  static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index,
 
 	INIT_LIST_HEAD(&rif->nexthop_list);
 	INIT_LIST_HEAD(&rif->neigh_list);
-	ether_addr_copy(rif->addr, l3_dev->dev_addr);
-	rif->mtu = l3_dev->mtu;
+	if (l3_dev) {
+		ether_addr_copy(rif->addr, l3_dev->dev_addr);
+		rif->mtu = l3_dev->mtu;
+		rif->dev = l3_dev;
+	}
 	rif->vr_id = vr_id;
-	rif->dev = l3_dev;
 	rif->rif_index = rif_index;
 
 	return rif;
@@ -6758,7 +6760,7 @@  static int mlxsw_sp_router_port_check_rif_addr(struct mlxsw_sp *mlxsw_sp,
 
 	for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) {
 		rif = mlxsw_sp->router->rifs[i];
-		if (rif && rif->dev != dev &&
+		if (rif && rif->dev && rif->dev != dev &&
 		    !ether_addr_equal_masked(rif->dev->dev_addr, dev_addr,
 					     mlxsw_sp->mac_mask)) {
 			NL_SET_ERR_MSG_MOD(extack, "All router interface MAC addresses must have the same prefix");