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Michael S. Tsirkin edf0e1fb0d netfilter: add CHECKSUM target 
This adds a `CHECKSUM' target, which can be used in the iptables mangle
table.

You can use this target to compute and fill in the checksum in
a packet that lacks a checksum.  This is particularly useful,
if you need to work around old applications such as dhcp clients,
that do not work well with checksum offloads, but don't want to
disable checksum offload in your device.

The problem happens in the field with virtualized applications.
For reference, see Red Hat bz 605555, as well as
http://www.spinics.net/lists/kvm/msg37660.html

Typical expected use (helps old dhclient binary running in a VM):
iptables -A POSTROUTING -t mangle -p udp --dport bootpc \
	-j CHECKSUM --checksum-fill

Includes fixes by Jan Engelhardt <jengelh@medozas.de>

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
 		2010-07-15 17:20:46 +02:00
..
9p kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, SHRT_MAX and SHRT_MIN 2010-05-25 08:07:02 -07:00
802 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-04-11 14:53:53 -07:00
8021q vlan: 64 bit rx counters 2010-06-28 23:24:31 -07:00
appletalk Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-04-11 14:53:53 -07:00
atm net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
ax25 net: sk_sleep() helper 2010-04-20 16:37:13 -07:00
bluetooth net: use __packed annotation 2010-06-03 03:21:52 -07:00
bridge Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2010-07-02 22:42:06 -07:00
caif caif: Kconfig and Makefile fixes 2010-06-29 00:06:38 -07:00
can net/can: Use memdup_user 2010-05-31 00:24:11 -07:00
core netdevice.h net/core/dev.c: Convert netdev_<level> logging macros to functions 2010-07-04 10:40:18 -07:00
dcb include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dccp snmp: add align parameter to snmp_mib_init() 2010-06-25 21:33:17 -07:00
decnet net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
dsa Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-04-11 14:53:53 -07:00
econet econet: fix locking 2010-06-11 18:37:08 -07:00
ethernet net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
ieee802154 ieee802154: Fix possible NULL pointer dereference in wpan_phy_alloc 2010-05-23 23:11:07 -07:00
ipv4 netfilter: ipt_REJECT: avoid touching dst ref 2010-07-05 10:40:09 +02:00
ipv6 netfilter: nf_conntrack_reasm: add fast path for in-order fragments 2010-07-05 10:38:23 +02:00
ipx include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
irda irttp: Print device parameters and statistics as unsigned 2010-06-12 18:18:33 -07:00
iucv net: use __packed annotation 2010-06-03 03:21:52 -07:00
key pfkey: add severity to printk 2010-05-17 23:23:13 -07:00
l2tp net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
lapb include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
llc Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-05-12 00:05:35 -07:00
mac80211 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2010-07-01 17:34:14 -07:00
netfilter netfilter: add CHECKSUM target 2010-07-15 17:20:46 +02:00
netlabel net: Remove unnecessary returns from void function()s 2010-05-17 23:23:14 -07:00
netlink af_netlink: Add needed scm_destroy after scm_send. 2010-06-16 14:55:56 -07:00
netrom net: sk_sleep() helper 2010-04-20 16:37:13 -07:00
packet packet_mmap: expose hw packet timestamps to network packet capture utilities 2010-06-02 05:53:56 -07:00
phonet phonet: use call_rcu for phonet device free 2010-06-09 16:14:25 -07:00
rds net/rds: Add missing mutex_unlock 2010-05-29 00:18:48 -07:00
rfkill Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-04-11 14:53:53 -07:00
rose net: sk_sleep() helper 2010-04-20 16:37:13 -07:00
rxrpc net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
sched act_nat: use stack variable 2010-06-30 12:12:37 -07:00
sctp snmp: add align parameter to snmp_mib_init() 2010-06-25 21:33:17 -07:00
sunrpc sunrpc: fix leak on error on socket xprt setup 2010-05-26 08:43:50 -04:00
tipc tipc: Reduce footprint by un-inlining tipc_msg_* routines 2010-05-12 23:02:29 -07:00
unix af_unix: Allow connecting to sockets in other network namespaces. 2010-06-16 14:58:17 -07:00
wanrouter headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
wimax Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-05-20 21:04:44 -07:00
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2010-07-01 17:34:14 -07:00
x25 X25: Remove bkl in sockopts 2010-05-17 17:39:28 -07:00
xfrm snmp: add align parameter to snmp_mib_init() 2010-06-25 21:33:17 -07:00
Kconfig net/sysfs: Fix the bitrot in network device kobject namespace support 2010-05-21 09:37:32 -07:00
Makefile net/Makefile: conditionally descend to wireless and ieee802154 2010-06-29 15:32:43 -07:00
TUNABLE
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compat.c From abbffa2aa9bd6f8df16d0d0a102af677510d8b9a Mon Sep 17 00:00:00 2001 2010-06-03 20:03:40 -07:00
nonet.c
…
socket.c From abbffa2aa9bd6f8df16d0d0a102af677510d8b9a Mon Sep 17 00:00:00 2001 2010-06-03 20:03:40 -07:00
sysctl_net.c net: Remove unnecessary returns from void function()s 2010-05-17 23:23:14 -07:00