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authorMoni Shoua <monis@voltaire.com>2009-09-15 05:37:40 -0400
committerDavid S. Miller <davem@davemloft.net>2009-09-15 05:37:40 -0400
commit75c78500ddad74b229cd0691496b8549490496a2 (patch)
tree5249219d68627421e4717c4e8f03f8b4bbad2e92 /include/linux/igmp.h
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 'include/linux/igmp.h')
-rw-r--r--include/linux/igmp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/igmp.h b/include/linux/igmp.h
index 92fbd8cbd68f..fe158e0e20e6 100644
--- a/include/linux/igmp.h
+++ b/include/linux/igmp.h
@@ -233,6 +233,8 @@ extern void ip_mc_init_dev(struct in_device *);
233extern void ip_mc_destroy_dev(struct in_device *); 233extern void ip_mc_destroy_dev(struct in_device *);
234extern void ip_mc_up(struct in_device *); 234extern void ip_mc_up(struct in_device *);
235extern void ip_mc_down(struct in_device *); 235extern void ip_mc_down(struct in_device *);
236extern void ip_mc_unmap(struct in_device *);
237extern void ip_mc_remap(struct in_device *);
236extern void ip_mc_dec_group(struct in_device *in_dev, __be32 addr); 238extern void ip_mc_dec_group(struct in_device *in_dev, __be32 addr);
237extern void ip_mc_inc_group(struct in_device *in_dev, __be32 addr); 239extern void ip_mc_inc_group(struct in_device *in_dev, __be32 addr);
238extern void ip_mc_rejoin_group(struct ip_mc_list *im); 240extern void ip_mc_rejoin_group(struct ip_mc_list *im);