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