| Message ID | 20201129125407.1391557-8-idosch@idosch.org |
|---|---|
| State | New |
| Headers | show |
| Series | mlxsw: Add support for 802.1ad bridging | expand |
On Sun, 29 Nov 2020 14:54:05 +0200 Ido Schimmel <idosch@idosch.org> wrote: > From: Danielle Ratson <danieller@nvidia.com> > > Drivers that support bridge offload need to be notified about changes to > the bridge's VLAN protocol so that they could react accordingly and > potentially veto the change. > > Add a new switchdev attribute to communicate the change to drivers. > > Signed-off-by: Danielle Ratson <danieller@nvidia.com> > Reviewed-by: Petr Machata <petrm@nvidia.com> > Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com> > Signed-off-by: Ido Schimmel <idosch@nvidia.com> > --- > include/net/switchdev.h | 2 ++ > net/bridge/br_vlan.c | 16 ++++++++++++++-- > 2 files changed, 16 insertions(+), 2 deletions(-) > > diff --git a/include/net/switchdev.h b/include/net/switchdev.h > index 53e8b4994296..99cd538d6519 100644 > --- a/include/net/switchdev.h > +++ b/include/net/switchdev.h > @@ -38,6 +38,7 @@ enum switchdev_attr_id { > SWITCHDEV_ATTR_ID_PORT_MROUTER, > SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME, > SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, > + SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, > SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED, > SWITCHDEV_ATTR_ID_BRIDGE_MROUTER, > #if IS_ENABLED(CONFIG_BRIDGE_MRP) > @@ -58,6 +59,7 @@ struct switchdev_attr { > bool mrouter; /* PORT_MROUTER */ > clock_t ageing_time; /* BRIDGE_AGEING_TIME */ > bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */ > + u16 vlan_protocol; /* BRIDGE_VLAN_PROTOCOL */ > bool mc_disabled; /* MC_DISABLED */ > #if IS_ENABLED(CONFIG_BRIDGE_MRP) > u8 mrp_port_state; /* MRP_PORT_STATE */ > diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c > index 11f54a7c0d1d..d07008678d32 100644 > --- a/net/bridge/br_vlan.c > +++ b/net/bridge/br_vlan.c > @@ -854,15 +854,25 @@ EXPORT_SYMBOL_GPL(br_vlan_get_proto); > > int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) > { > + struct switchdev_attr attr = { > + .orig_dev = br->dev, > + .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, > + .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, > + .u.vlan_protocol = ntohs(proto), > + }; > int err = 0; > struct net_bridge_port *p; > struct net_bridge_vlan *vlan; > struct net_bridge_vlan_group *vg; > - __be16 oldproto; > + __be16 oldproto = br->vlan_proto; > > if (br->vlan_proto == proto) > return 0; > > + err = switchdev_port_attr_set(br->dev, &attr); > + if (err && err != -EOPNOTSUPP) > + return err; > + > /* Add VLANs for the new proto to the device filter. */ > list_for_each_entry(p, &br->port_list, list) { > vg = nbp_vlan_group(p); > @@ -873,7 +883,6 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) > } > } > > - oldproto = br->vlan_proto; > br->vlan_proto = proto; > > recalculate_group_addr(br); > @@ -889,6 +898,9 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) > return 0; > > err_filt: > + attr.u.vlan_protocol = ntohs(oldproto); > + switchdev_port_attr_set(br->dev, &attr); > + > list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) > vlan_vid_del(p->dev, proto, vlan->vid); > Reviewed-by: Ivan Vecera <ivecera@redhat.com>
diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 53e8b4994296..99cd538d6519 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -38,6 +38,7 @@ enum switchdev_attr_id { SWITCHDEV_ATTR_ID_PORT_MROUTER, SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME, SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, + SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED, SWITCHDEV_ATTR_ID_BRIDGE_MROUTER, #if IS_ENABLED(CONFIG_BRIDGE_MRP) @@ -58,6 +59,7 @@ struct switchdev_attr { bool mrouter; /* PORT_MROUTER */ clock_t ageing_time; /* BRIDGE_AGEING_TIME */ bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */ + u16 vlan_protocol; /* BRIDGE_VLAN_PROTOCOL */ bool mc_disabled; /* MC_DISABLED */ #if IS_ENABLED(CONFIG_BRIDGE_MRP) u8 mrp_port_state; /* MRP_PORT_STATE */ diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 11f54a7c0d1d..d07008678d32 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -854,15 +854,25 @@ EXPORT_SYMBOL_GPL(br_vlan_get_proto); int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) { + struct switchdev_attr attr = { + .orig_dev = br->dev, + .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, + .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, + .u.vlan_protocol = ntohs(proto), + }; int err = 0; struct net_bridge_port *p; struct net_bridge_vlan *vlan; struct net_bridge_vlan_group *vg; - __be16 oldproto; + __be16 oldproto = br->vlan_proto; if (br->vlan_proto == proto) return 0; + err = switchdev_port_attr_set(br->dev, &attr); + if (err && err != -EOPNOTSUPP) + return err; + /* Add VLANs for the new proto to the device filter. */ list_for_each_entry(p, &br->port_list, list) { vg = nbp_vlan_group(p); @@ -873,7 +883,6 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) } } - oldproto = br->vlan_proto; br->vlan_proto = proto; recalculate_group_addr(br); @@ -889,6 +898,9 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) return 0; err_filt: + attr.u.vlan_protocol = ntohs(oldproto); + switchdev_port_attr_set(br->dev, &attr); + list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) vlan_vid_del(p->dev, proto, vlan->vid);