UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

mlxsw: spectrum_router: Demote tunnels on VRF migration 

The mlxsw driver currently doesn't offload GRE tunnels if they have the
same local address and use the same underlay VRF. When such a situation
arises, the tunnels in conflict are demoted to slow path.

However, the current code only verifies this condition on tunnel
creation and tunnel change, not when a tunnel is moved to a different
VRF. When the tunnel has no bound device, underlay and overlay are the
same. Thus moving a tunnel moves the underlay as well, and that can
cause local address conflict.

So modify mlxsw_sp_netdevice_ipip_ol_vrf_event() to check if there are
any conflicting tunnels, and demote them if yes.

Fixes: af641713e9 ("mlxsw: spectrum_router: Onload conflicting tunnels")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-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:
Petr Machata 2017-11-28 13:17:12 +01:00 committed by David S. Miller
parent 57c77ce470
commit cab43d9c87
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
View File

@ -1449,9 +1449,27 @@ static int mlxsw_sp_netdevice_ipip_ol_vrf_event(struct mlxsw_sp *mlxsw_sp,
{
struct mlxsw_sp_ipip_entry *ipip_entry =
mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
enum mlxsw_sp_l3proto ul_proto;
union mlxsw_sp_l3addr saddr;
u32 ul_tb_id;
if (!ipip_entry)
return 0;
/* For flat configuration cases, moving overlay to a different VRF might
* cause local address conflict, and the conflicting tunnels need to be
* demoted.
*/
ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ol_dev);
ul_proto = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]->ul_proto;
saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ol_dev);
if (mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp, ul_proto,
saddr, ul_tb_id,
ipip_entry)) {
mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry);
return 0;
}
return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
true, false, false, extack);
}