diff mbox series

[net-next,5/8] bridge: mcast: Use MDB group key from configuration structure

Message ID 20221205074251.4049275-6-idosch@nvidia.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series bridge: mcast: Preparations for EVPN extensions | expand

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Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 57 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Ido Schimmel Dec. 5, 2022, 7:42 a.m. UTC 
The MDB group key (i.e., {source, destination, protocol, VID}) is
currently determined under the multicast lock from the netlink
attributes. Instead, use the group key from the MDB configuration
structure that was prepared before acquiring the lock.

No functional changes intended.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
---
 net/bridge/br_mdb.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

Comments

Nikolay Aleksandrov Dec. 5, 2022, 11:41 a.m. UTC | #1 
On 05/12/2022 09:42, Ido Schimmel wrote:
> The MDB group key (i.e., {source, destination, protocol, VID}) is
> currently determined under the multicast lock from the netlink
> attributes. Instead, use the group key from the MDB configuration
> structure that was prepared before acquiring the lock.
> 
> No functional changes intended.
> 
> Signed-off-by: Ido Schimmel <idosch@nvidia.com>
> ---
>  net/bridge/br_mdb.c | 15 +++++++--------
>  1 file changed, 7 insertions(+), 8 deletions(-)
> 

Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
diff mbox series

Patch

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 2f9b192500a3..cb4fd27f118f 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -855,20 +855,19 @@  __br_mdb_choose_context(struct net_bridge *br,
 
 static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
 			    struct br_mdb_entry *entry,
-			    struct nlattr **mdb_attrs,
+			    struct br_mdb_config *cfg,
 			    struct netlink_ext_ack *extack)
 {
 	struct net_bridge_mdb_entry *mp, *star_mp;
 	struct net_bridge_port_group __rcu **pp;
 	struct net_bridge_port_group *p;
 	struct net_bridge_mcast *brmctx;
-	struct br_ip group, star_group;
+	struct br_ip group = cfg->group;
 	unsigned long now = jiffies;
 	unsigned char flags = 0;
+	struct br_ip star_group;
 	u8 filter_mode;
 
-	__mdb_entry_to_br_ip(entry, &group, mdb_attrs);
-
 	brmctx = __br_mdb_choose_context(br, entry, extack);
 	if (!brmctx)
 		return -EINVAL;
@@ -966,7 +965,7 @@  static int __br_mdb_add(struct br_mdb_config *cfg,
 	int ret;
 
 	spin_lock_bh(&cfg->br->multicast_lock);
-	ret = br_mdb_add_group(cfg->br, cfg->p, cfg->entry, mdb_attrs, extack);
+	ret = br_mdb_add_group(cfg->br, cfg->p, cfg->entry, cfg, extack);
 	spin_unlock_bh(&cfg->br->multicast_lock);
 
 	return ret;
@@ -1118,6 +1117,7 @@  static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if (br_vlan_enabled(cfg.br->dev) && vg && cfg.entry->vid == 0) {
 		list_for_each_entry(v, &vg->vlan_list, vlist) {
 			cfg.entry->vid = v->vid;
+			cfg.group.vid = v->vid;
 			err = __br_mdb_add(&cfg, mdb_attrs, extack);
 			if (err)
 				break;
@@ -1137,11 +1137,9 @@  static int __br_mdb_del(struct br_mdb_config *cfg,
 	struct net_bridge_mdb_entry *mp;
 	struct net_bridge_port_group *p;
 	struct net_bridge_port_group __rcu **pp;
-	struct br_ip ip;
+	struct br_ip ip = cfg->group;
 	int err = -EINVAL;
 
-	__mdb_entry_to_br_ip(entry, &ip, mdb_attrs);
-
 	spin_lock_bh(&br->multicast_lock);
 	mp = br_mdb_ip_get(br, &ip);
 	if (!mp)
@@ -1204,6 +1202,7 @@  static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if (br_vlan_enabled(cfg.br->dev) && vg && cfg.entry->vid == 0) {
 		list_for_each_entry(v, &vg->vlan_list, vlist) {
 			cfg.entry->vid = v->vid;
+			cfg.group.vid = v->vid;
 			err = __br_mdb_del(&cfg, mdb_attrs);
 		}
 	} else {