Willem de Bruijn 31c2e4926f udp: do not expect udp headers in recv cmsg IP_CMSG_CHECKSUM ...

On udp sockets, recv cmsg IP_CMSG_CHECKSUM returns a checksum over
the packet payload. Since commit e6afc8ace6 pulled the headers,
taking skb->data as the start of transport header is incorrect. Use
the transport header pointer.

Also, when peeking at an offset from the start of the packet, only
return a checksum from the start of the peeked data. Note that the
cmsg does not subtract a tail checkum when reading truncated data.

Fixes: e6afc8ace6 ("udp: remove headers from UDP packets before queueing")

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2016-04-13 22:24:52 -04:00

..

netfilter

netfilter: ipv4: fix NULL dereference

2016-03-28 17:59:29 +02:00

af_inet.c

net: introduce lockdep_is_held and update various places to use it

2016-04-07 16:44:14 -04:00

ah4.c

ah4: Fix error return in ah_input().

2015-08-25 13:38:50 -07:00

arp.c

arp: correct return value of arp_rcv

2016-03-07 14:55:04 -05:00

cipso_ipv4.c

net: introduce lockdep_is_held and update various places to use it

2016-04-07 16:44:14 -04:00

datagram.c

net: Set sk_txhash from a random number

2015-07-29 22:44:04 -07:00

devinet.c

ipv4: Don't do expensive useless work during inetdev destroy.

2016-03-13 23:28:35 -04:00

esp4.c

esp4: Switch to new AEAD interface

2015-05-28 11:23:20 +08:00

fib_frontend.c

ipv4: initialize flowi4_flags before calling fib_lookup()

2016-03-22 15:59:23 -04:00

fib_lookup.h

ipv4: consider TOS in fib_select_default

2015-07-24 22:46:11 -07:00

fib_rules.c

net: ipv6: use common fib_default_rule_pref

2015-09-09 14:19:50 -07:00

fib_semantics.c

net: ipv4: Consider failed nexthops in multipath routes

2016-04-11 15:16:13 -04:00

fib_trie.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-02-01 15:56:08 -08:00

fou.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-04-09 17:41:41 -04:00

gre_demux.c

gre: Remove support for sharing GRE protocol hook.

2015-08-10 14:03:54 -07:00

gre_offload.c

GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU

2016-04-07 16:56:33 -04:00

icmp.c

net: ipv4: Convert IP network timestamps to be y2038 safe

2016-03-01 17:18:44 -05:00

igmp.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-03-08 12:34:12 -05:00

inet_connection_sock.c

tcp/dccp: fix inet_reuseport_add_sock()

2016-04-07 12:02:33 -04:00

inet_diag.c

tcp/dccp: do not touch listener sk_refcnt under synflood

2016-04-04 22:11:20 -04:00

inet_fragment.c

inet: kill unused skb_free op

2016-01-05 22:25:57 -05:00

inet_hashtables.c

tcp/dccp: fix inet_reuseport_add_sock()

2016-04-07 12:02:33 -04:00

inet_timewait_sock.c

tcp/dccp: fix timewait races in timer handling

2015-09-21 16:32:29 -07:00

inetpeer.c

net: Add helper function to compare inetpeer addresses

2015-08-28 13:32:36 -07:00

ip_forward.c

net: remove skb_sender_cpu_clear()

2016-03-01 17:36:47 -05:00

ip_fragment.c

net: Export ip fragment sysctl to unprivileged users

2016-02-16 20:42:54 -05:00

ip_gre.c

GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU

2016-04-07 16:56:33 -04:00

ip_input.c

ipv4: namespacify ip_early_demux sysctl knob

2016-02-16 20:42:54 -05:00

ip_options.c

net: ipv4: Convert IP network timestamps to be y2038 safe

2016-03-01 17:18:44 -05:00

ip_output.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-03-08 12:34:12 -05:00

ip_sockglue.c

udp: do not expect udp headers in recv cmsg IP_CMSG_CHECKSUM

2016-04-13 22:24:52 -04:00

ip_tunnel_core.c

ip_tunnel: implement __iptunnel_pull_header

2016-04-06 16:50:32 -04:00

ip_tunnel.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-03-08 12:34:12 -05:00

ip_vti.c

ip_tunnel: Move stats update to iptunnel_xmit()

2015-12-25 23:32:23 -05:00

ipcomp.c

ipv4: coding style: comparison for equality with NULL

2015-04-03 12:11:15 -04:00

ipconfig.c

ipv4: ipconfig: avoid unused ic_proto_used symbol

2016-01-29 19:39:09 -08:00

ipip.c

iptunnel: scrub packet in iptunnel_pull_header

2016-02-18 14:34:54 -05:00

ipmr.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2015-12-03 21:09:12 -05:00

Kconfig

ipv4: Remove inet_lro library

2016-02-17 16:15:46 -05:00

Makefile

ipv4: Remove inet_lro library

2016-02-17 16:15:46 -05:00

netfilter.c

ipv4: Pass struct net into ip_route_me_harder

2015-09-29 20:21:32 +02:00

ping.c

sock: enable timestamping using control messages

2016-04-04 15:50:30 -04:00

proc.c

ipv4: Namespaceify ip_default_ttl sysctl knob

2016-02-16 20:42:54 -05:00

protocol.c

net: Export inet_offloads and inet6_offloads

2014-09-19 17:15:31 -04:00

raw.c

sock: enable timestamping using control messages

2016-04-04 15:50:30 -04:00

route.c

route: check and remove route cache when we get route

2016-02-18 11:31:36 -05:00

syncookies.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2016-03-19 10:05:34 -07:00

sysctl_net_ipv4.c

net: ipv4: Consider failed nexthops in multipath routes

2016-04-11 15:16:13 -04:00

tcp_bic.c

tcp: add tcp_in_slow_start helper

2015-07-09 14:22:52 -07:00

tcp_cdg.c

tcp: do not slow start when cwnd equals ssthresh

2015-07-09 14:22:52 -07:00

tcp_cong.c

tcp: remove tcp_ecn_make_synack() socket argument

2015-09-25 13:00:38 -07:00

tcp_cubic.c

tcp_cubic: do not set epoch_start in the future

2015-09-17 22:35:07 -07:00

tcp_dctcp.c

tcp: allow dctcp alpha to drop to zero

2015-10-23 02:46:52 -07:00

tcp_diag.c

net: diag: Support destroying TCP sockets.

2015-12-15 23:26:52 -05:00

tcp_fastopen.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2016-03-19 10:05:34 -07:00

tcp_highspeed.c

tcp: add tcp_in_slow_start helper

2015-07-09 14:22:52 -07:00

tcp_htcp.c

tcp: add tcp_in_slow_start helper

2015-07-09 14:22:52 -07:00

tcp_hybla.c

tcp: do not slow start when cwnd equals ssthresh

2015-07-09 14:22:52 -07:00

tcp_illinois.c

tcp: add tcp_in_slow_start helper

2015-07-09 14:22:52 -07:00

tcp_input.c

tcp: increment sk_drops for listeners

2016-04-04 22:11:20 -04:00

tcp_ipv4.c

net: introduce lockdep_is_held and update various places to use it

2016-04-07 16:44:14 -04:00

tcp_lp.c

tcp: remove in_flight parameter from cong_avoid() methods

2014-05-03 19:23:07 -04:00

tcp_metrics.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-03-08 12:34:12 -05:00

tcp_minisocks.c

tcp: rate limit ACK sent by SYN_RECV request sockets

2016-04-04 22:11:20 -04:00

tcp_offload.c

net: Store checksum result for offloaded GSO checksums

2016-02-11 08:55:33 -05:00

tcp_output.c

tcp: Add RFC4898 tcpEStatsPerfDataSegsOut/In

2016-03-14 14:55:26 -04:00

tcp_probe.c

net: ipv4: tcp_probe: Replace timespec with timespec64

2016-03-01 17:18:44 -05:00

tcp_recovery.c

tcp: use RACK to detect losses

2015-10-21 07:00:53 -07:00

tcp_scalable.c

tcp: add tcp_in_slow_start helper

2015-07-09 14:22:52 -07:00

tcp_timer.c

ipv4: Namespaceify tcp_orphan_retries sysctl knob

2016-02-07 14:35:11 -05:00

tcp_vegas.c

tcp: add tcp_in_slow_start helper

2015-07-09 14:22:52 -07:00

tcp_vegas.h

tcp: prepare CC get_info() access from getsockopt()

2015-04-29 17:10:38 -04:00

tcp_veno.c

tcp: add tcp_in_slow_start helper

2015-07-09 14:22:52 -07:00

tcp_westwood.c

tcp_westwood: fix tcp_westwood_info()

2015-05-05 19:50:09 -04:00

tcp_yeah.c

tcp_yeah: don't set ssthresh below 2

2016-01-11 17:25:16 -05:00

tcp.c

sock: enable timestamping using control messages

2016-04-04 15:50:30 -04:00

tunnel4.c

net: Convert printks to pr_<level>

2012-03-11 23:42:51 -07:00

udp_diag.c

udp: no longer use SLAB_DESTROY_BY_RCU

2016-04-04 22:11:19 -04:00

udp_impl.h

net: Remove iocb argument from sendmsg and recvmsg

2015-03-02 13:06:31 -05:00

udp_offload.c

udp: Remove udp_offloads

2016-04-07 16:53:30 -04:00

udp_tunnel.c

udp: Add socket based GRO and config

2016-04-07 16:53:29 -04:00

udp.c

udp: do not expect udp headers in recv cmsg IP_CMSG_CHECKSUM

2016-04-13 22:24:52 -04:00

udplite.c

net: Eliminate no_check from protosw

2014-05-23 16:28:53 -04:00

xfrm4_input.c

netfilter: Pass net into okfn

2015-09-17 17:18:37 -07:00

xfrm4_mode_beet.c

ipv4: ERROR: code indent should use tabs where possible

2013-12-26 13:43:21 -05:00

xfrm4_mode_transport.c

…

xfrm4_mode_tunnel.c

ipv4: hash net ptr into fragmentation bucket selection

2015-03-25 14:07:04 -04:00

xfrm4_output.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2015-10-24 06:54:12 -07:00

xfrm4_policy.c

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec

2015-12-22 16:26:31 -05:00

xfrm4_protocol.c

xfrm4: Remove duplicate semicolon

2014-06-30 07:49:47 +02:00

xfrm4_state.c

inet: make no_pmtu_disc per namespace and kill ipv4_config

2013-12-18 16:58:20 -05:00

xfrm4_tunnel.c

sit: add IPv4 over IPv4 support

2013-05-31 17:19:05 -07:00