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66b13d99d9
kernel_optimize_test/net/ipv4
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Eric Dumazet 66b13d99d9 ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT 
There is a long standing bug in linux tcp stack, about ACK messages sent
on behalf of TIME_WAIT sockets.

In the IP header of the ACK message, we choose to reflect TOS field of
incoming message, and this might break some setups.

Example of things that were broken :
  - Routing using TOS as a selector
  - Firewalls
  - Trafic classification / shaping

We now remember in timewait structure the inet tos field and use it in
ACK generation, and route lookup.

Notes :
 - We still reflect incoming TOS in RST messages.
 - We could extend MuraliRaja Muniraju patch to report TOS value in
netlink messages for TIME_WAIT sockets.
 - A patch is needed for IPv6

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-24 03:06:21 -04:00
..
netfilter Merge branch 'master' of github.com:davem330/net 2011-09-22 03:23:13 -04:00
af_inet.c ipv4: compat_ioctl is local to af_inet.c, make it static 2011-10-19 19:24:39 -04:00
ah4.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
arp.c neigh: Pass neighbour entry to output ops. 2011-07-17 23:11:17 -07:00
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 rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER 2011-08-02 04:29:23 -07:00
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
fib_rules.c
fib_semantics.c ipv4: Fix fib_info->fib_metrics leak 2011-09-16 17:42:26 -04:00
fib_trie.c rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER 2011-08-02 04:29:23 -07:00
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 Merge branch 'master' of github.com:davem330/net 2011-09-22 03:23:13 -04:00
inet_connection_sock.c seqlock: Get rid of SEQLOCK_UNLOCKED 2011-05-24 15:22:17 +02:00
inet_diag.c net-netlink: Add a new attribute to expose TOS values via netlink 2011-10-12 19:09:18 -04:00
inet_fragment.c
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 ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT 2011-10-24 03:06:21 -04:00
inetpeer.c net: Compute protocol sequence numbers and fragment IDs using MD5. 2011-08-06 18:33:19 -07:00
ip_forward.c ipv4: Fix 'iph' use before set. 2011-05-12 23:03:46 -04:00
ip_fragment.c net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
ip_gre.c net: Abstract dst->neighbour accesses behind helpers. 2011-07-17 23:11:35 -07:00
ip_input.c ip: introduce ip_is_fragment helper inline function 2011-06-21 20:33:34 -07:00
ip_options.c ip_options_compile: properly handle unaligned pointer 2011-05-31 15:11:02 -07:00
ip_output.c ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT 2011-10-24 03:06:21 -04:00
ip_sockglue.c net: use INET_ECN_MASK instead of hardcoded 3 2011-10-22 00:07:47 -04:00
ipcomp.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
ipconfig.c ipconfig: Reduce switch/case indent 2011-07-01 16:11:15 -07:00
ipip.c rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER 2011-08-02 04:29:23 -07:00
ipmr.c net: cleanup some rcu_dereference_raw 2011-08-12 02:55:28 -07:00
Kconfig
Makefile net: ipv4: add IPPROTO_ICMP socket kind 2011-05-13 16:08:13 -04:00
netfilter.c netfilter: TCP and raw fix for ip_route_me_harder 2011-08-07 22:52:32 -07:00
ping.c ipv4, ping: Remove duplicate icmp.h include 2011-06-20 13:04:38 -07:00
proc.c tcp: Change possible SYN flooding messages 2011-09-15 14:49:43 -04:00
protocol.c
raw.c ipv4: route non-local sources for raw socket 2011-08-07 22:52:32 -07:00
route.c ipv4: NET_IPV4_ROUTE_GC_INTERVAL removal 2011-10-03 14:13:01 -04:00
syncookies.c tcp: add const qualifiers where possible 2011-10-21 05:22:42 -04:00
sysctl_net_ipv4.c inetpeer: remove unused list 2011-06-08 17:05:30 -07:00
tcp_bic.c
tcp_cong.c
tcp_cubic.c tcp_cubic: limit delayed_ack ratio to prevent divide error 2011-05-08 15:51:57 -07:00
tcp_diag.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c tcp: add const qualifiers where possible 2011-10-21 05:22:42 -04:00
tcp_ipv4.c ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT 2011-10-24 03:06:21 -04:00
tcp_lp.c Fix common misspellings 2011-03-31 11:26:23 -03:00
tcp_minisocks.c tcp: add const qualifiers where possible 2011-10-21 05:22:42 -04:00
tcp_output.c tcp: add const qualifiers where possible 2011-10-21 05:22:42 -04:00
tcp_probe.c
tcp_scalable.c
tcp_timer.c
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c Fix common misspellings 2011-03-31 11:26:23 -03:00
tcp.c tcp: md5: dont write skb head in tcp_md5_hash_header() 2011-10-24 01:52:35 -04:00
tunnel4.c
udp_impl.h
udp.c rps: Add flag to skb to indicate rxhash is based on L4 tuple 2011-08-17 20:06:03 -07:00
udplite.c
xfrm4_input.c
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c xfrm4: Don't call icmp_send on local error 2011-07-01 17:33:19 -07:00
xfrm4_policy.c ip: introduce ip_is_fragment helper inline function 2011-06-21 20:33:34 -07:00
xfrm4_state.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-3.6 2011-05-11 14:26:58 -04:00
xfrm4_tunnel.c