diff options
Diffstat (limited to 'target/linux/generic/patches-3.18/051-02-bridge-allow-setting-hash_max-multicast_router-if-in.patch')
| -rw-r--r-- | target/linux/generic/patches-3.18/051-02-bridge-allow-setting-hash_max-multicast_router-if-in.patch | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.18/051-02-bridge-allow-setting-hash_max-multicast_router-if-in.patch b/target/linux/generic/patches-3.18/051-02-bridge-allow-setting-hash_max-multicast_router-if-in.patch new file mode 100644 index 0000000..f7f88f8 --- /dev/null +++ b/target/linux/generic/patches-3.18/051-02-bridge-allow-setting-hash_max-multicast_router-if-in.patch @@ -0,0 +1,99 @@ +From 6ae4ae8e512bd229f806c22f8a2cd751e4f987c2 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Linus=20L=C3=BCssing?= <linus.luessing@c0d3.blue> +Date: Sat, 23 May 2015 03:12:34 +0200 +Subject: [PATCH] bridge: allow setting hash_max + multicast_router if + interface is down +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Network managers like netifd (used in OpenWRT for instance) try to +configure interface options after creation but before setting the +interface up. + +Unfortunately the sysfs / bridge currently only allows to configure the +hash_max and multicast_router options when the bridge interface is up. +But since br_multicast_init() doesn't start any timers and only sets +default values and initializes timers it should be save to reconfigure +the default values after that, before things actually get active after +the bridge is set up. + +Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + net/bridge/br_multicast.c | 24 +++--------------------- + 1 file changed, 3 insertions(+), 21 deletions(-) + +--- a/net/bridge/br_multicast.c ++++ b/net/bridge/br_multicast.c +@@ -1948,11 +1948,9 @@ out: + + int br_multicast_set_router(struct net_bridge *br, unsigned long val) + { +- int err = -ENOENT; ++ int err = -EINVAL; + + spin_lock_bh(&br->multicast_lock); +- if (!netif_running(br->dev)) +- goto unlock; + + switch (val) { + case 0: +@@ -1963,13 +1961,8 @@ int br_multicast_set_router(struct net_b + br->multicast_router = val; + err = 0; + break; +- +- default: +- err = -EINVAL; +- break; + } + +-unlock: + spin_unlock_bh(&br->multicast_lock); + + return err; +@@ -1978,11 +1971,9 @@ unlock: + int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) + { + struct net_bridge *br = p->br; +- int err = -ENOENT; ++ int err = -EINVAL; + + spin_lock(&br->multicast_lock); +- if (!netif_running(br->dev) || p->state == BR_STATE_DISABLED) +- goto unlock; + + switch (val) { + case 0: +@@ -2004,13 +1995,8 @@ int br_multicast_set_port_router(struct + + br_multicast_add_router(br, p); + break; +- +- default: +- err = -EINVAL; +- break; + } + +-unlock: + spin_unlock(&br->multicast_lock); + + return err; +@@ -2115,15 +2101,11 @@ unlock: + + int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val) + { +- int err = -ENOENT; ++ int err = -EINVAL; + u32 old; + struct net_bridge_mdb_htable *mdb; + + spin_lock_bh(&br->multicast_lock); +- if (!netif_running(br->dev)) +- goto unlock; +- +- err = -EINVAL; + if (!is_power_of_2(val)) + goto unlock; + |