From f888f58795b640442165e60a6fa93e8e623d01a5 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 24 Aug 2016 11:18:51 +0200 Subject: [PATCH] mlxsw: spectrum: Add missing flood to router port In case we have a layer 3 interface on top of a bridge (VLAN / FID RIF), then we should flood the following packet types to the router: * Broadcast: If DIP is the broadcast address of the interface, then we need to be able to get it to CPU by trapping it following route lookup. * Reserved IP multicast (224.0.0.X): Some control packets (e.g. OSPF) use this range and are trapped in the router block. Fixes: 99f44bb3527b ("mlxsw: spectrum: Enable L3 interfaces on top of bridge devices") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/port.h | 1 + .../net/ethernet/mellanox/mlxsw/spectrum.c | 43 ++++++++++++++++++- 2 files changed, 43 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/port.h b/drivers/net/ethernet/mellanox/mlxsw/port.h index f33b997f2b61..af371a82c35b 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/port.h +++ b/drivers/net/ethernet/mellanox/mlxsw/port.h @@ -56,6 +56,7 @@ #define MLXSW_PORT_PHY_BITS_MASK (MLXSW_PORT_MAX_PHY_PORTS - 1) #define MLXSW_PORT_CPU_PORT 0x0 +#define MLXSW_PORT_ROUTER_PORT (MLXSW_PORT_MAX_PHY_PORTS + 2) #define MLXSW_PORT_DONT_CARE (MLXSW_PORT_MAX_PORTS) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 1f8168906811..7291f2c4b0c7 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -3324,6 +3324,39 @@ static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp, return mlxsw_sp_fid_find(mlxsw_sp, fid); } +static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid) +{ + return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID : + MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST; +} + +static u16 mlxsw_sp_flood_table_index_get(u16 fid) +{ + return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid; +} + +static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid, + bool set) +{ + enum mlxsw_flood_table_type table_type; + char *sftr_pl; + u16 index; + int err; + + sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); + if (!sftr_pl) + return -ENOMEM; + + table_type = mlxsw_sp_flood_table_type_get(fid); + index = mlxsw_sp_flood_table_index_get(fid); + mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, index, table_type, + 1, MLXSW_PORT_ROUTER_PORT, set); + err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); + + kfree(sftr_pl); + return err; +} + static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid) { if (mlxsw_sp_fid_is_vfid(fid)) @@ -3360,10 +3393,14 @@ static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp, if (rif == MLXSW_SP_RIF_MAX) return -ERANGE; - err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true); + err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true); if (err) return err; + err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true); + if (err) + goto err_rif_bridge_op; + err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true); if (err) goto err_rif_fdb_op; @@ -3385,6 +3422,8 @@ static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp, mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); err_rif_fdb_op: mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false); +err_rif_bridge_op: + mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); return err; } @@ -3404,6 +3443,8 @@ void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp, mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false); + mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); + netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif); } -- GitLab