diff options
| author | Cong Wang <amwang@redhat.com> | 2013-05-22 01:52:54 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-05-23 01:54:37 +0400 |
| commit | 1c8ad5bfa2be5025b0c81e3c2decd0574d453ab1 (patch) | |
| tree | f69ac9d37009526ae924c23940207b6531534f9f /net/bridge/br_sysfs_br.c | |
| parent | 4f45c40f2c018e5c278988521a74fd5ee06fb819 (diff) | |
| download | linux-1c8ad5bfa2be5025b0c81e3c2decd0574d453ab1.tar.xz | |
bridge: use the bridge IP addr as source addr for querier
Quote from Adam:
"If it is believed that the use of 0.0.0.0
as the IP address is what is causing strange behaviour on other devices
then is there a good reason that a bridge rather than a router shouldn't
be the active querier? If not then using the bridge IP address and
having the querier enabled by default may be a reasonable solution
(provided that our querier obeys the election rules and shuts up if it
sees a query from a lower IP address that isn't 0.0.0.0). Just because a
device is the elected querier for IGMP doesn't appear to mean it is
required to perform any other routing functions."
And introduce a new troggle for it, as suggested by Herbert.
Suggested-by: Adam Baker <linux@baker-net.org.uk>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Adam Baker <linux@baker-net.org.uk>
Signed-off-by: Cong Wang <amwang@redhat.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_sysfs_br.c')
| -rw-r--r-- | net/bridge/br_sysfs_br.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c index 8baa9c08e1a4..394bb96b6087 100644 --- a/net/bridge/br_sysfs_br.c +++ b/net/bridge/br_sysfs_br.c @@ -375,6 +375,31 @@ static ssize_t store_multicast_snooping(struct device *d, static DEVICE_ATTR(multicast_snooping, S_IRUGO | S_IWUSR, show_multicast_snooping, store_multicast_snooping); +static ssize_t show_multicast_query_use_ifaddr(struct device *d, + struct device_attribute *attr, + char *buf) +{ + struct net_bridge *br = to_bridge(d); + return sprintf(buf, "%d\n", br->multicast_query_use_ifaddr); +} + +static int set_query_use_ifaddr(struct net_bridge *br, unsigned long val) +{ + br->multicast_query_use_ifaddr = !!val; + return 0; +} + +static ssize_t +store_multicast_query_use_ifaddr(struct device *d, + struct device_attribute *attr, + const char *buf, size_t len) +{ + return store_bridge_parm(d, buf, len, set_query_use_ifaddr); +} +static DEVICE_ATTR(multicast_query_use_ifaddr, S_IRUGO | S_IWUSR, + show_multicast_query_use_ifaddr, + store_multicast_query_use_ifaddr); + static ssize_t show_multicast_querier(struct device *d, struct device_attribute *attr, char *buf) @@ -734,6 +759,7 @@ static struct attribute *bridge_attrs[] = { &dev_attr_multicast_router.attr, &dev_attr_multicast_snooping.attr, &dev_attr_multicast_querier.attr, + &dev_attr_multicast_query_use_ifaddr.attr, &dev_attr_hash_elasticity.attr, &dev_attr_hash_max.attr, &dev_attr_multicast_last_member_count.attr, |