linux/net
Ian Campbell d54bb28bc9 arp_notify: unconditionally send gratuitous ARP for NETDEV_NOTIFY_PEERS.
commit d11327ad66 upstream.

NETDEV_NOTIFY_PEER is an explicit request by the driver to send a link
notification while NETDEV_UP/NETDEV_CHANGEADDR generate link
notifications as a sort of side effect.

In the later cases the sysctl option is present because link
notification events can have undesired effects e.g. if the link is
flapping. I don't think this applies in the case of an explicit
request from a driver.

This patch makes NETDEV_NOTIFY_PEER unconditional, if preferred we
could add a new sysctl for this case which defaults to on.

This change causes Xen post-migration ARP notifications (which cause
switches to relearn their MAC tables etc) to be sent by default.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[reported to solve hyperv live migration problem - gkh]
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Mike Surcouf <mike@surcouf.co.uk>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-07 15:17:59 -08:00
..
9p 9p: strlen() doesn't count the terminator 2010-08-10 10:20:39 -07:00
802 net: remove COMPAT_NET_DEV_OPS 2009-05-25 01:53:53 -07:00
8021q vlan: Fix register_vlan_dev() error path 2009-11-17 06:45:04 -08:00
appletalk Have atalk_route_packet() return NET_RX_SUCCESS not NET_XMIT_SUCCESS 2009-09-14 17:02:47 -07:00
atm net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
ax25 ax25: netrom: rose: Fix timer oopses 2010-02-09 04:50:56 -08:00
bluetooth Bluetooth: Fix kernel crash on L2CAP stress tests 2010-04-01 15:58:55 -07:00
bridge bridge: Clear INET control block of SKBs passed into ip_fragment(). 2010-09-26 17:21:19 -07:00
can can-bcm: fix minor heap overflow 2010-12-09 13:27:10 -08:00
core filter: make sure filters dont read uninitialized memory 2011-03-02 09:46:35 -05:00
dcb net: fix double skb free in dcbnl 2009-09-26 20:16:15 -07:00
dccp dccp: fix oops on Reset after close 2011-03-07 15:17:57 -08:00
decnet DECnet: don't leak uninitialized stack byte 2010-12-09 13:27:03 -08:00
dsa netdev: convert pseudo-devices to netdev_tx_t 2009-09-01 01:13:07 -07:00
econet econet: fix CVE-2010-3850 2010-12-09 13:27:12 -08:00
ethernet net: remove COMPAT_NET_DEV_OPS 2009-05-25 01:53:53 -07:00
ieee802154 net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
ipv4 arp_notify: unconditionally send gratuitous ARP for NETDEV_NOTIFY_PEERS. 2011-03-07 15:17:59 -08:00
ipv6 ip: fix truesize mismatch in ip fragmentation 2010-10-28 21:44:08 -07:00
ipx net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
irda irda: Fix heap memory corruption in iriap.c 2010-12-09 13:26:32 -08:00
iucv net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
key net: file_operations should be const 2009-09-02 01:03:53 -07:00
lapb net: remove NET_RX_BAD and NET_RX_CN* defines 2009-07-05 19:15:35 -07:00
llc net/llc: make opt unsigned in llc_ui_setsockopt() 2010-09-26 17:21:24 -07:00
mac80211 mac80211: fix supported rates IE if AP doesn't give us it's rates 2010-08-02 10:21:27 -07:00
netfilter netfilter: nf_conntrack: allow nf_ct_alloc_hashtable() to get highmem pages 2010-12-09 13:26:51 -08:00
netlabel Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-07-30 19:22:43 -07:00
netlink netlink: fix compat recvmsg 2010-08-26 16:41:55 -07:00
netrom ax25: netrom: rose: Fix timer oopses 2010-02-09 04:50:56 -08:00
packet af_packet: Don't use skb after dev_queue_xmit() 2010-02-09 04:50:56 -08:00
phonet Phonet: disable network namespace support 2010-10-28 21:44:17 -07:00
rds rds: Integer overflow in RDS cmsg handling 2010-12-09 13:27:12 -08:00
rfkill Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2009-11-23 14:01:47 -08:00
rose rose: Fix signedness issues wrt. digi count. 2010-10-28 21:44:10 -07:00
rxrpc net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
sched sched: Fix softirq time accounting 2011-02-17 15:37:24 -08:00
sctp sctp: Fix oops when sending queued ASCONF chunks 2011-03-07 15:17:55 -08:00
sunrpc sunrpc/cache: fix module refcnt leak in a failure path 2011-03-02 09:46:44 -05:00
tipc tipc: Fix oops on send prior to entering networked mode (v3) 2010-07-05 11:11:16 -07:00
unix UNIX: Do not loop forever at unix_autobind(). 2010-09-26 17:21:21 -07:00
wanrouter headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
wimax wimax: fix warning caused by not checking retval of rfkill_set_hw_state() 2009-06-11 11:12:48 -07:00
wireless wext: fix potential private ioctl memory content leak 2010-10-28 21:44:02 -07:00
x25 x25: Do not reference freed memory. 2011-03-02 09:47:07 -05:00
xfrm net: file_operations should be const 2009-09-02 01:03:53 -07:00
compat.c net: Limit socket I/O iovec total length to INT_MAX. 2010-12-09 13:27:13 -08:00
Kconfig net/compat/wext: send different messages to compat tasks 2009-07-15 08:53:39 -07:00
Makefile net: remove redundant sched/ in net/Makefile 2009-07-12 20:11:14 -07:00
nonet.c
socket.c net: Truncate recvfrom and sendto length to INT_MAX. 2010-12-09 13:27:12 -08:00
sysctl_net.c net: sysctl_net - use net_eq to compare nets 2009-03-16 16:23:30 +01:00
TUNABLE