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Date: Fri, 4 Sep 2020 09:15:27 +0000 From: Henrik Bjoernlund <henrik.bjoernlund@...rochip.com> To: <davem@...emloft.net>, <kuba@...nel.org>, <roopa@...dia.com>, <nikolay@...dia.com>, <jiri@...lanox.com>, <idosch@...lanox.com>, <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>, <bridge@...ts.linux-foundation.org>, <UNGLinuxDriver@...rochip.com> CC: Henrik Bjoernlund <henrik.bjoernlund@...rochip.com>, Horatiu Vultur <horatiu.vultur@...rochip.com> Subject: [PATCH RFC 7/7] bridge: cfm: Bridge port remove. This is addition of CFM functionality to delete MEP instances on a port that is removed from the bridge. A MEP can only exist on a port that is related to a bridge. Signed-off-by: Henrik Bjoernlund <henrik.bjoernlund@...rochip.com> --- net/bridge/br_cfm.c | 13 +++++++++++++ net/bridge/br_if.c | 1 + net/bridge/br_private.h | 6 ++++++ 3 files changed, 20 insertions(+) diff --git a/net/bridge/br_cfm.c b/net/bridge/br_cfm.c index b7fed2c1d8ec..c724ce020ce3 100644 --- a/net/bridge/br_cfm.c +++ b/net/bridge/br_cfm.c @@ -921,3 +921,16 @@ bool br_cfm_created(struct net_bridge *br) { return !list_empty(&br->mep_list); } + +/* Deletes the CFM instances on a specific bridge port + * note: called under rtnl_lock + */ +void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *port) +{ + struct br_cfm_mep *mep; + + list_for_each_entry_rcu(mep, &br->mep_list, head, + lockdep_rtnl_is_held()) + if (mep->create.ifindex == port->dev->ifindex) + mep_delete_implementation(br, mep); +} diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index a0e9a7937412..f7d2f472ae24 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -334,6 +334,7 @@ static void del_nbp(struct net_bridge_port *p) spin_unlock_bh(&br->lock); br_mrp_port_del(br, p); + br_cfm_port_del(br, p); br_ifinfo_notify(RTM_DELLINK, NULL, p); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 53bcbdd21f34..5617255f0c0c 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -1369,6 +1369,7 @@ int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); int br_cfm_rx_frame_process(struct net_bridge_port *p, struct sk_buff *skb); bool br_cfm_created(struct net_bridge *br); +void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br, @@ -1393,6 +1394,11 @@ static inline bool br_cfm_created(struct net_bridge *br) return false; } +static inline void br_cfm_port_del(struct net_bridge *br, + struct net_bridge_port *p) +{ +} + static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) { return -EOPNOTSUPP; -- 2.28.0
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