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23 October 2021, 00:29:24 UTC
Revision a816c7c712ff9f6770168b91facb9bfa9f0acd48 authored by Jay Vosburgh on 01 March 2007, 01:03:37 UTC, committed by Jeff Garzik on 06 March 2007, 11:08:11 UTC 
bonding: Improve IGMP join processing
 
	In active-backup mode, the current bonding code duplicates IGMP
traffic to all slaves, so that switches are up to date in case of a
failover from an active to a backup interface.  If bonding then fails
back to the original active interface, it is likely that the "active
slave" switch's IGMP forwarding for the port will be out of date until
some event occurs to refresh the switch (e.g., a membership query).

	This patch alters the behavior of bonding to no longer flood
IGMP to all ports, and to issue IGMP JOINs to the newly active port at
the time of a failover.  This insures that switches are kept up to date
for all cases.

	"GOELLESCH Niels" <niels.goellesch@eurocontrol.int> originally
reported this problem, and included a patch.  His original patch was
modified by Jay Vosburgh to additionally remove the existing IGMP flood
behavior, use RCU, streamline code paths, fix trailing white space, and
adjust for style.

Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
1 parent e245cb7
History
Tip revision: a816c7c712ff9f6770168b91facb9bfa9f0acd48 authored by Jay Vosburgh on 01 March 2007, 01:03:37 UTC
bonding: Improve IGMP join processing
Tip revision: a816c7c
File Mode Size
Kconfig -rw-r--r-- 1.5 KB
Kconfig.iosched -rw-r--r-- 1.9 KB
Makefile -rw-r--r-- 347 bytes
as-iosched.c -rw-r--r-- 37.7 KB
blktrace.c -rw-r--r-- 12.4 KB
cfq-iosched.c -rw-r--r-- 53.0 KB
deadline-iosched.c -rw-r--r-- 11.6 KB
elevator.c -rw-r--r-- 25.0 KB
genhd.c -rw-r--r-- 17.5 KB
ioctl.c -rw-r--r-- 7.4 KB
ll_rw_blk.c -rw-r--r-- 102.4 KB
noop-iosched.c -rw-r--r-- 2.5 KB
scsi_ioctl.c -rw-r--r-- 16.3 KB
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