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authorMoni Shoua <monis@voltaire.com>2009-09-15 02:37:40 -0700
committerDavid S. Miller <davem@davemloft.net>2009-09-15 02:37:40 -0700
commit75c78500ddad74b229cd0691496b8549490496a2 (patch)
tree5249219d68627421e4717c4e8f03f8b4bbad2e92 /net/ipv4/devinet.c
parent481a8199142c050b72bff8a1956a49fd0a75bbe0 (diff)
bonding: remap muticast addresses without using dev_close() and dev_open()
This patch fixes commit e36b9d16c6a6d0f59803b3ef04ff3c22c3844c10. The approach there is to call dev_close()/dev_open() whenever the device type is changed in order to remap the device IP multicast addresses to HW multicast addresses. This approach suffers from 2 drawbacks: *. It assumes tha the device is UP when calling dev_close(), or otherwise dev_close() has no affect. It is worth to mention that initscripts (Redhat) and sysconfig (Suse) doesn't act the same in this matter. *. dev_close() has other side affects, like deleting entries from the routing table, which might be unnecessary. The fix here is to directly remap the IP multicast addresses to HW multicast addresses for a bonding device that changes its type, and nothing else. Reported-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Moni Shoua <monis@voltaire.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/devinet.c')
-rw-r--r--net/ipv4/devinet.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 3863c3a4223..07336c6201f 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1087,6 +1087,12 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
case NETDEV_DOWN:
ip_mc_down(in_dev);
break;
+ case NETDEV_BONDING_OLDTYPE:
+ ip_mc_unmap(in_dev);
+ break;
+ case NETDEV_BONDING_NEWTYPE:
+ ip_mc_remap(in_dev);
+ break;
case NETDEV_CHANGEMTU:
if (inetdev_valid_mtu(dev->mtu))
break;