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Jiri Benc 4c507d2897 net: implement IP_RECVTOS for IP_PKTOPTIONS 
Currently, it is not easily possible to get TOS/DSCP value of packets from
an incoming TCP stream. The mechanism is there, IP_PKTOPTIONS getsockopt
with IP_RECVTOS set, the same way as incoming TTL can be queried. This is
not actually implemented for TOS, though.

This patch adds this functionality, both for IPv4 (IP_PKTOPTIONS) and IPv6
(IPV6_2292PKTOPTIONS). For IPv4, like in the IP_RECVTTL case, the value of
the TOS field is stored from the other party's ACK.

This is needed for proxies which require DSCP transparency. One such example
is at http://zph.bratcheda.org/.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-13 00:46:41 -05:00
..
netfilter
Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security
2012-01-14 18:36:33 -08:00
af_inet.c
net: implement IP_RECVTOS for IP_PKTOPTIONS
2012-02-13 00:46:41 -05:00
ah4.c
ah: Don't return NET_XMIT_DROP on input.
2011-11-12 18:13:32 -05:00
arp.c
net: Don't proxy arp respond if iif == rt->dst.dev if private VLAN is disabled
2012-02-10 15:13:36 -05:00
cipso_ipv4.c
cipso: remove an unneeded NULL check in cipso_v4_doi_add()
2011-10-11 18:43:53 -04:00
datagram.c
ipv4: Lock socket and use cork flow in ip4_datagram_connect().
2011-05-08 13:48:57 -07:00
devinet.c
net: reintroduce missing rcu_assign_pointer() calls
2012-01-12 12:26:56 -08:00
esp4.c
inet: constify ip headers and in6_addr
2011-04-22 11:04:14 -07:00
fib_frontend.c
rtnetlink: Compute and store minimum ifinfo dump size
2011-06-09 20:38:07 -07:00
fib_lookup.h
ipv4: Fix nexthop caching wrt. scoping.
2011-03-24 18:06:47 -07:00
fib_rules.c
net: ipv4: export fib_lookup and fib_table_lookup
2011-12-04 22:43:33 +01:00
fib_semantics.c
ipv4: Fix fib_info->fib_metrics leak
2011-09-16 17:42:26 -04:00
fib_trie.c
net: reintroduce missing rcu_assign_pointer() calls
2012-01-12 12:26:56 -08:00
gre.c
rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER
2011-08-02 04:29:23 -07:00
icmp.c
net: more accurate skb truesize
2011-10-13 16:05:07 -04:00
igmp.c
net: reintroduce missing rcu_assign_pointer() calls
2012-01-12 12:26:56 -08:00
inet_connection_sock.c
tcp: bind() optimize port allocation
2012-01-25 21:50:43 -05:00
inet_diag.c
inet_diag: Rename inet_diag_req_compat into inet_diag_req
2012-01-11 12:56:06 -08:00
inet_fragment.c
net/ipv4: EXPORT_SYMBOL cleanups
2010-07-12 12:57:54 -07:00
inet_hashtables.c
net: Compute protocol sequence numbers and fragment IDs using MD5.
2011-08-06 18:33:19 -07:00
inet_lro.c
net: add skb frag size accessors
2011-10-19 03:10:46 -04:00
inet_timewait_sock.c
net: Fix files explicitly needing to include module.h
2011-10-31 19:30:28 -04:00
inetpeer.c
inetpeer: initialize ->redirect_genid in inet_getpeer()
2012-01-17 15:52:12 -05:00
ip_forward.c
ipv4: Save nexthop address of LSRR/SSRR option to IPCB.
2011-11-23 19:19:32 -05:00
ip_fragment.c
treewide: Fix typos in various parts of the kernel, and fix some comments.
2011-12-02 14:57:31 +01:00
ip_gre.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2012-02-04 16:39:32 -05:00
ip_input.c
ip: introduce ip_is_fragment helper inline function
2011-06-21 20:33:34 -07:00
ip_options.c
ipv4: Fix wrong order of ip_rt_get_source() and update iph->daddr.
2012-02-10 15:12:12 -05:00
ip_output.c
net: Rename dst_get_neighbour{, _raw} to dst_get_neighbour_noref{, _raw}.
2011-12-05 15:20:19 -05:00
ip_sockglue.c
net: implement IP_RECVTOS for IP_PKTOPTIONS
2012-02-13 00:46:41 -05:00
ipcomp.c
inet: constify ip headers and in6_addr
2011-04-22 11:04:14 -07:00
ipconfig.c
net: fix some sparse errors
2012-01-17 10:31:12 -05:00
ipip.c
ipip: Fix bug added to ipip_tunnel_xmit().
2012-01-24 18:18:05 -05:00
ipmr.c
net: reintroduce missing rcu_assign_pointer() calls
2012-01-12 12:26:56 -08:00
Kconfig
net: Fix build regression when INET_UDP_DIAG=y and IPV6=m
2012-02-07 13:35:28 -05:00
Makefile
tcp memory pressure controls
2011-12-12 19:04:10 -05:00
netfilter.c
netfilter: possible unaligned packet header in ip_route_me_harder
2011-11-21 18:46:18 +01:00
ping.c
ipv4: Implement IP_UNICAST_IF socket option.
2012-02-08 15:52:45 -05:00
proc.c
tcp: add LINUX_MIB_TCPRETRANSFAIL counter
2012-01-26 13:51:00 -05:00
protocol.c
net: add __rcu annotations to protocol
2010-10-27 11:37:31 -07:00
raw.c
ipv4: Implement IP_UNICAST_IF socket option.
2012-02-08 15:52:45 -05:00
route.c
ipv4/ipv6: Prepare for new route gateway semantics.
2012-01-26 15:22:32 -05:00
syncookies.c
tcp: Replace constants with #define macros
2011-12-21 01:03:23 -05:00
sysctl_net_ipv4.c
tcp: properly initialize tcp memory limits
2012-02-02 14:34:41 -05:00
tcp_bic.c
tcp: fix undo after RTO for BIC
2012-01-20 14:17:26 -05:00
tcp_cong.c
tcp: do not scale TSO segment size with reordering degree
2011-11-29 00:29:41 -05:00
tcp_cubic.c
tcp: fix undo after RTO for CUBIC
2012-01-20 14:17:26 -05:00
tcp_diag.c
inet_diag: Rename inet_diag_req into inet_diag_req_v2
2012-01-11 12:56:06 -08:00
tcp_highspeed.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_htcp.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_hybla.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_illinois.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_input.c
tcp: detect loss above high_seq in recovery
2012-01-22 15:08:44 -05:00
tcp_ipv4.c
net: implement IP_RECVTOS for IP_PKTOPTIONS
2012-02-13 00:46:41 -05:00
tcp_lp.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
tcp_memcontrol.c
net: decrement memcg jump label when limit, not usage, is changed
2012-01-12 12:27:59 -08:00
tcp_minisocks.c
tcp: md5: rcu conversion
2012-01-31 12:14:00 -05:00
tcp_output.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2012-02-04 16:39:32 -05:00
tcp_probe.c
net: ipv4: tcp_probe: cleanup snprintf() use
2010-11-17 12:27:46 -08:00
tcp_scalable.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_timer.c
net: Disambiguate kernel message
2012-02-01 14:41:50 -05:00
tcp_vegas.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_vegas.h
…
tcp_veno.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_westwood.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_yeah.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
tcp.c
tcp: properly initialize tcp memory limits
2012-02-02 14:34:41 -05:00
tunnel4.c
net: use IS_ENABLED(CONFIG_IPV6)
2011-12-11 18:25:16 -05:00
udp_diag.c
net: kill duplicate included header
2012-01-17 10:31:12 -05:00
udp_impl.h
…
udp.c
ipv4: Implement IP_UNICAST_IF socket option.
2012-02-08 15:52:45 -05:00
udplite.c
Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
2011-11-06 19:44:47 -08:00
xfrm4_input.c
net/ipv4: EXPORT_SYMBOL cleanups
2010-07-12 12:57:54 -07:00
xfrm4_mode_beet.c
…
xfrm4_mode_transport.c
…
xfrm4_mode_tunnel.c
ipv4: Don't pre-seed hoplimit metric.
2010-12-12 22:08:17 -08:00
xfrm4_output.c
xfrm4: Don't call icmp_send on local error
2011-07-01 17:33:19 -07:00
xfrm4_policy.c
ipv4: fix ipsec forward performance regression
2011-10-24 03:01:22 -04:00
xfrm4_state.c
net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules
2011-10-31 19:30:30 -04:00
xfrm4_tunnel.c
net: use IS_ENABLED(CONFIG_IPV6)
2011-12-11 18:25:16 -05:00