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charset="utf-8" Notify user space on mdb offload failure if mdb_offload_fail_notification is enabled. Signed-off-by: Joseph Huang Acked-by: Nikolay Aleksandrov --- net/bridge/br_mdb.c | 26 +++++++++++++++++++++----- net/bridge/br_private.h | 9 +++++++++ net/bridge/br_switchdev.c | 4 ++++ 3 files changed, 34 insertions(+), 5 deletions(-) diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 0639691cd19b..5f53f387d251 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -519,16 +519,17 @@ static size_t rtnl_mdb_nlmsg_size(const struct net_br= idge_port_group *pg) rtnl_mdb_nlmsg_pg_size(pg); } =20 -void br_mdb_notify(struct net_device *dev, - struct net_bridge_mdb_entry *mp, - struct net_bridge_port_group *pg, - int type) +static void __br_mdb_notify(struct net_device *dev, + struct net_bridge_mdb_entry *mp, + struct net_bridge_port_group *pg, + int type, bool notify_switchdev) { struct net *net =3D dev_net(dev); struct sk_buff *skb; int err =3D -ENOBUFS; =20 - br_switchdev_mdb_notify(dev, mp, pg, type); + if (notify_switchdev) + br_switchdev_mdb_notify(dev, mp, pg, type); =20 skb =3D nlmsg_new(rtnl_mdb_nlmsg_size(pg), GFP_ATOMIC); if (!skb) @@ -546,6 +547,21 @@ void br_mdb_notify(struct net_device *dev, rtnl_set_sk_err(net, RTNLGRP_MDB, err); } =20 +void br_mdb_notify(struct net_device *dev, + struct net_bridge_mdb_entry *mp, + struct net_bridge_port_group *pg, + int type) +{ + __br_mdb_notify(dev, mp, pg, type, true); +} + +void br_mdb_flag_change_notify(struct net_device *dev, + struct net_bridge_mdb_entry *mp, + struct net_bridge_port_group *pg) +{ + __br_mdb_notify(dev, mp, pg, RTM_NEWMDB, false); +} + static int nlmsg_populate_rtr_fill(struct sk_buff *skb, struct net_device *dev, int ifindex, u16 vid, u32 pid, diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 02188b7ff8e6..fc43ccc06ccb 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -1005,6 +1005,8 @@ int br_mdb_hash_init(struct net_bridge *br); void br_mdb_hash_fini(struct net_bridge *br); void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp, struct net_bridge_port_group *pg, int type); +void br_mdb_flag_change_notify(struct net_device *dev, struct net_bridge_m= db_entry *mp, + struct net_bridge_port_group *pg); void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *p= mctx, int type); void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, @@ -1354,6 +1356,13 @@ br_multicast_set_pg_offload_flags(struct net_bridge_= port_group *p, p->flags |=3D (offloaded ? MDB_PG_FLAGS_OFFLOAD : MDB_PG_FLAGS_OFFLOAD_FAILED); } + +static inline bool +br_mdb_should_notify(const struct net_bridge *br, u8 changed_flags) +{ + return br_opt_get(br, BROPT_MDB_OFFLOAD_FAIL_NOTIFICATION) && + (changed_flags & MDB_PG_FLAGS_OFFLOAD_FAILED); +} #else static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx, struct net_bridge_mcast_port **pmctx, diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c index 2d769ef3cb8a..95d7355a0407 100644 --- a/net/bridge/br_switchdev.c +++ b/net/bridge/br_switchdev.c @@ -504,6 +504,7 @@ static void br_switchdev_mdb_complete(struct net_device= *dev, int err, void *pri struct net_bridge_mdb_entry *mp; struct net_bridge_port *port =3D data->port; struct net_bridge *br =3D port->br; + u8 old_flags; =20 if (err =3D=3D -EOPNOTSUPP) goto out_free; @@ -517,7 +518,10 @@ static void br_switchdev_mdb_complete(struct net_devic= e *dev, int err, void *pri if (p->key.port !=3D port) continue; =20 + old_flags =3D p->flags; br_multicast_set_pg_offload_flags(p, !err); + if (br_mdb_should_notify(br, old_flags ^ p->flags)) + br_mdb_flag_change_notify(br->dev, mp, p); } out: spin_unlock_bh(&br->multicast_lock); --=20 2.49.0