https://github.com/torvalds/linux
Revision c65c7a306610ee7c13669a8f5601b472c19dc6f1 authored by Jon Maxwell on 29 May 2014, 07:27:16 UTC, committed by David S. Miller on 02 June 2014, 05:14:50 UTC
There has been a number incidents recently where customers running KVM have reported that VM hosts on different Hypervisors are unreachable. Based on pcap traces we found that the bridge was broadcasting the ARP request out onto the network. However some NICs have an inbuilt switch which on occasions were broadcasting the VMs ARP request back through the physical NIC on the Hypervisor. This resulted in the bridge changing ports and incorrectly learning that the VMs mac address was external. As a result the ARP reply was directed back onto the external network and VM never updated it's ARP cache. This patch will notify the bridge command, after a fdb has been updated to identify such port toggling. Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com> Reviewed-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Acked-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 4324be1
Tip revision: c65c7a306610ee7c13669a8f5601b472c19dc6f1 authored by Jon Maxwell on 29 May 2014, 07:27:16 UTC
bridge: notify user space after fdb update
bridge: notify user space after fdb update
Tip revision: c65c7a3
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .gitignore | -rw-r--r-- | 1.1 KB |
| .mailmap | -rw-r--r-- | 4.4 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 93.6 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 271.8 KB |
| Makefile | -rw-r--r-- | 50.5 KB |
| README | -rw-r--r-- | 18.3 KB |
| REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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