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net: bridge: mst: Notify switchdev drivers of VLAN MSTI migrations

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Whenever a VLAN moves to a new MSTI, send a switchdev notification so
that switchdevs can track a bridge's VID to MSTI mappings.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Tobias Waldekranz 2022-03-16 16:08:47 +01:00 committed by Jakub Kicinski
parent 87c167bb94
commit 6284c723d9
3 changed files with 66 additions and 0 deletions
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7
include/net/switchdev.h
View File

@ -29,6 +29,7 @@ enum switchdev_attr_id {
SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
SWITCHDEV_ATTR_ID_BRIDGE_MST,
SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
SWITCHDEV_ATTR_ID_VLAN_MSTI,
};
struct switchdev_brport_flags {
@ -36,6 +37,11 @@ struct switchdev_brport_flags {
unsigned long mask;
};
struct switchdev_vlan_msti {
u16 vid;
u16 msti;
};
struct switchdev_attr {
struct net_device *orig_dev;
enum switchdev_attr_id id;
@ -52,6 +58,7 @@ struct switchdev_attr {
bool mst; /* BRIDGE_MST */
bool mc_disabled; /* MC_DISABLED */
u8 mrp_port_role; /* MRP_PORT_ROLE */
struct switchdev_vlan_msti vlan_msti; /* VLAN_MSTI */
} u;
};

13
net/bridge/br_mst.c
View File

@ -69,13 +69,26 @@ static void br_mst_vlan_sync_state(struct net_bridge_vlan *pv, u16 msti)
int br_mst_vlan_set_msti(struct net_bridge_vlan *mv, u16 msti)
{
struct switchdev_attr attr = {
.id = SWITCHDEV_ATTR_ID_VLAN_MSTI,
.orig_dev = mv->br->dev,
.u.vlan_msti = {
.vid = mv->vid,
.msti = msti,
},
};
struct net_bridge_vlan_group *vg;
struct net_bridge_vlan *pv;
struct net_bridge_port *p;
int err;
if (mv->msti == msti)
return 0;
err = switchdev_port_attr_set(mv->br->dev, &attr, NULL);
if (err && err != -EOPNOTSUPP)
return err;
mv->msti = msti;
list_for_each_entry(p, &mv->br->port_list, list) {

46
net/bridge/br_switchdev.c
View File

@ -331,6 +331,46 @@ br_switchdev_fdb_replay(const struct net_device *br_dev, const void *ctx,
return err;
}
static int br_switchdev_vlan_attr_replay(struct net_device *br_dev,
const void *ctx,
struct notifier_block *nb,
struct netlink_ext_ack *extack)
{
struct switchdev_notifier_port_attr_info attr_info = {
.info = {
.dev = br_dev,
.extack = extack,
.ctx = ctx,
},
};
struct net_bridge *br = netdev_priv(br_dev);
struct net_bridge_vlan_group *vg;
struct switchdev_attr attr;
struct net_bridge_vlan *v;
int err;
attr_info.attr = &attr;
attr.orig_dev = br_dev;
vg = br_vlan_group(br);
list_for_each_entry(v, &vg->vlan_list, vlist) {
if (v->msti) {
attr.id = SWITCHDEV_ATTR_ID_VLAN_MSTI;
attr.u.vlan_msti.vid = v->vid;
attr.u.vlan_msti.msti = v->msti;
err = nb->notifier_call(nb, SWITCHDEV_PORT_ATTR_SET,
&attr_info);
err = notifier_to_errno(err);
if (err)
return err;
}
}
return 0;
}
static int
br_switchdev_vlan_replay_one(struct notifier_block *nb,
struct net_device *dev,
@ -425,6 +465,12 @@ static int br_switchdev_vlan_replay(struct net_device *br_dev,
return err;
}
if (adding) {
err = br_switchdev_vlan_attr_replay(br_dev, ctx, nb, extack);
if (err)
return err;
}
return 0;
}