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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: 99f44bb352 ("mlxsw: spectrum: Enable L3 interfaces on top of bridge devices")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2016-08-24 11:18:51 +02:00 committed by David S. Miller
parent d7226c7a4d
commit f888f58795
2 changed files with 43 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -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)

43
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -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 @@ err_rif_alloc:
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);
}