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7d26bb103c
linux-next/drivers
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Weiping Pan 7d26bb103c bonding: emit event when bonding changes MAC 
When a bonding device is configured with fail_over_mac=active,
we expect to see the MAC address of the new active slave as the source MAC
address after failover. But we see that the source MAC address is the MAC
address of previous active slave.

Emit NETDEV_CHANGEADDR event when bonding changes its MAC address, in order
to let arp_netdev_event flush neighbour cache and route cache.

How to reproduce this bug ?

                       -----------hostB----------------
hostA ----- switch ---|-- eth0--bond0(192.168.100.2/24)|
(192.168.100.1/24  \--|-- eth1-/                       |
                       --------------------------------

1 on hostB,
modprobe bonding mode=1 miimon=500 fail_over_mac=active downdelay=1000
num_grat_arp=1
ifconfig bond0 192.168.100.2/24 up
ifenslave bond0 eth0
ifenslave bond0 eth1

then eth0 is the active slave, and MAC of bond0 is MAC of eth0.

2 on hostA, ping 192.168.100.2

3 on hostB,
tcpdump -i bond0 -p icmp -XXX
you will see bond0 uses MAC of eth0 as source MAC in icmp reply.

4 on hostB,
ifconfig eth0 down
tcpdump -i bond0 -p icmp -XXX (just keep it running in step 3)
you will see first bond0 uses MAC of eth1 as source MAC in icmp
reply, then it will use MAC of eth0 as source MAC.

Signed-off-by: Weiping Pan <wpan@redhat.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-29 18:11:57 -04:00
..
accessibility vt:tackle kbd_table 2012-03-08 10:50:35 -08:00
acpi
amba
ata 1) AHCI regression fix. A recent "make driver conform to spec" change 2012-03-22 20:22:30 -07:00
atm eni: fix driver remove function and driver probe error path. 2012-03-16 23:13:20 -07:00
auxdisplay
base The following text was taken from the original review request: 2012-03-24 10:41:37 -07:00
bcma
block One tiny feature that accidentally got lost in the initial git pull: 2012-03-24 12:20:25 -07:00
bluetooth Bluetooth: Adding USB device 13d3:3375 as an Atheros AR3012. 2012-03-08 02:16:24 -03:00
cdrom powerpc: Remove some of the legacy iSeries specific device drivers 2012-03-16 09:28:05 +11:00
char ARM: global cleanups 2012-03-27 16:03:32 -07:00
clk
clocksource ARM: device tree work 2012-03-27 16:47:35 -07:00
connector
cpufreq Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2012-03-23 17:56:39 -07:00
cpuidle
crypto Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-03-22 18:15:32 -07:00
dca
devfreq ARM: global cleanups 2012-03-27 16:03:32 -07:00
dio
dma The following text was taken from the original review request: 2012-03-24 10:24:31 -07:00
edac The following text was taken from the original review request: 2012-03-24 10:41:37 -07:00
eisa
firewire IEEE 1394 (FireWire) subsystem updates post v3.3: 2012-03-22 20:31:15 -07:00
firmware
gpio ARM: driver specific updates 2012-03-27 16:41:24 -07:00
gpu The following text was taken from the original review request: 2012-03-24 10:08:39 -07:00
hid Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-03-23 14:39:09 -07:00
hv Tools: hv: Support enumeration from all the pools 2012-03-16 13:36:04 -07:00
hwmon hwmon: Add MCP3021 ADC driver 2012-03-23 10:02:20 +01:00
hwspinlock
i2c ARM: device tree work 2012-03-27 16:47:35 -07:00
ide ide: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:17 +08:00
idle drivers/idle/intel_idle.c: fix confusing code identation 2012-03-21 17:54:54 -07:00
ieee802154
infiniband Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2012-03-22 12:38:04 -07:00
input ARM: board specific updates 2012-03-27 16:27:28 -07:00
iommu The IOMMU updates for this round are not very large patch-wise. But 2012-03-23 14:15:07 -07:00
isdn mISDN: array underflow in open_bchannel() 2012-03-27 22:42:32 -04:00
leds ARM: board specific updates 2012-03-27 16:27:28 -07:00
lguest
macintosh Core device tree changes for Linux v3.4 2012-03-21 10:30:03 -07:00
mca
md md updates for 3.4 2012-03-22 12:29:50 -07:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-03-23 14:39:09 -07:00
memstick memstick: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:19 +08:00
message
mfd The following text was taken from the original review request: 2012-03-24 10:41:37 -07:00
misc ARM: device tree work 2012-03-27 16:47:35 -07:00
mmc ARM: driver specific updates 2012-03-27 16:41:24 -07:00
mtd ARM: board specific updates 2012-03-27 16:27:28 -07:00
net bonding: emit event when bonding changes MAC 2012-03-29 18:11:57 -04:00
nfc
nubus
of Merge branch 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm 2012-03-23 17:30:49 -07:00
oprofile tidy up after d_make_root() conversion 2012-03-20 21:29:37 -04:00
parisc Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-03-23 14:02:12 -07:00
parport
pci Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-03-23 14:02:12 -07:00
pcmcia ARM: device tree work 2012-03-27 16:47:35 -07:00
pinctrl pinctrl: support pinconfig on the U300 2012-03-12 22:49:03 +01:00
platform Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-03-23 14:02:12 -07:00
pnp
power The following text was taken from the original review request: 2012-03-24 10:41:37 -07:00
pps
ps3
ptp phc: Update author's email address. 2012-03-17 01:41:43 -07:00
rapidio rapidio/tsi721: fix bug in register offset definitions 2012-03-15 17:03:03 -07:00
regulator ARM: driver specific updates 2012-03-27 16:41:24 -07:00
remoteproc
rpmsg
rtc ARM: device tree work 2012-03-27 16:47:35 -07:00
s390 s390/char: use for_each_clear_bit() 2012-03-23 16:58:34 -07:00
sbus
scsi Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-03-23 14:02:12 -07:00
sfi
sh sh: convert cpg code to sh_clk_ops 2012-03-12 22:19:07 +01:00
sn
spi ARM: global cleanups 2012-03-27 16:03:32 -07:00
ssb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-03-20 21:04:47 -07:00
staging The following text was taken from the original review request: 2012-03-24 10:24:31 -07:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2012-03-22 12:38:04 -07:00
tc
thermal
tty ARM: device tree work 2012-03-27 16:47:35 -07:00
uio
usb f_phonet: fix skb truesize underestimation 2012-03-27 22:50:54 -04:00
uwb uwb: use for_each_clear_bit() 2012-03-23 16:58:34 -07:00
vhost Merge branch 'vhost-net' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost 2012-03-23 14:46:48 -04:00
video ARM: board specific updates 2012-03-27 16:27:28 -07:00
virt
virtio
vlynq
w1 DS2781 Maxim Stand-Alone Fuel Gauge battery and w1 slave drivers 2012-03-08 11:15:33 -08:00
watchdog ARM: device tree work 2012-03-27 16:47:35 -07:00
xen One tiny feature that accidentally got lost in the initial git pull: 2012-03-24 12:20:25 -07:00
zorro
Kconfig remoteproc/rpmsg: new subsystem 2012-03-27 16:30:09 -07:00
Makefile remoteproc/rpmsg: new subsystem 2012-03-27 16:30:09 -07:00