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linux-stable/net/ipv4
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David S. Miller 0374d9ceb0 ipv4: Kill spurious write to iph->daddr in ip_forward_options(). 
This code block executes when opt->srr_is_hit is set.  It will be
set only by ip_options_rcv_srr().

ip_options_rcv_srr() walks until it hits a matching nexthop in the SRR
option addresses, and when it matches one 1) looks up the route for
that nexthop and 2) on route lookup success it writes that nexthop
value into iph->daddr.

ip_forward_options() runs later, and again walks the SRR option
addresses looking for the option matching the destination of the route
stored in skb_rtable().  This route will be the same exact one looked
up for the nexthop by ip_options_rcv_srr().

Therefore "rt->rt_dst == iph->daddr" must be true.

All it really needs to do is record the route's source address in the
matching SRR option adddress.  It need not write iph->daddr again,
since that has already been done by ip_options_rcv_srr() as detailed
above.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-13 17:15:50 -04:00
..
netfilter inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
af_inet.c net: ipv4: add IPPROTO_ICMP socket kind 2011-05-13 16:08:13 -04:00
ah4.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
arp.c net: gre: provide multicast mappings for ipv4 and ipv6 2011-03-30 00:10:47 -07:00
cipso_ipv4.c inet: add RCU protection to inet->opt 2011-04-28 13:16:35 -07:00
datagram.c ipv4: Lock socket and use cork flow in ip4_datagram_connect(). 2011-05-08 13:48:57 -07:00
devinet.c net: fix two lockdep splats 2011-05-10 15:03:01 -07:00
esp4.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
fib_frontend.c Disable rp_filter for IPsec packets 2011-04-10 18:50:59 -07:00
fib_lookup.h ipv4: Fix nexthop caching wrt. scoping. 2011-03-24 18:06:47 -07:00
fib_rules.c ipv4: Use flowi4 in FIB layer. 2011-03-12 15:08:49 -08:00
fib_semantics.c ipv4: Fix nexthop caching wrt. scoping. 2011-03-24 18:06:47 -07:00
fib_trie.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-05-05 14:59:02 -07:00
gre.c tunnels: add _rcu annotations 2010-10-25 13:09:45 -07:00
icmp.c net: ipv4: add IPPROTO_ICMP socket kind 2011-05-13 16:08:13 -04:00
igmp.c ipv4: Use flowi4's {saddr,daddr} in igmpv3_newpack() and igmp_send_report() 2011-05-03 20:53:12 -07:00
inet_connection_sock.c ipv4: Create inet_csk_route_child_sock(). 2011-05-08 14:34:22 -07:00
inet_diag.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
inet_fragment.c net/ipv4: EXPORT_SYMBOL cleanups 2010-07-12 12:57:54 -07:00
inet_hashtables.c inet: Fix __inet_inherit_port() to correctly increment bsockets and num_owners 2010-11-28 18:18:44 -08:00
inet_lro.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
inet_timewait_sock.c tcp: fix inet_twsk_deschedule() 2011-02-19 18:59:04 -08:00
inetpeer.c inetpeer: reduce stack usage 2011-04-12 13:58:33 -07:00
ip_forward.c ipv4: Fix 'iph' use before set. 2011-05-12 23:03:46 -04:00
ip_fragment.c net: ip_expire() must revalidate route 2011-05-04 14:04:07 -07:00
ip_gre.c net: call dev_alloc_name from register_netdevice 2011-05-05 10:57:45 -07:00
ip_input.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
ip_options.c ipv4: Kill spurious write to iph->daddr in ip_forward_options(). 2011-05-13 17:15:50 -04:00
ip_output.c ipv4: Pass explicit daddr arg to ip_send_reply(). 2011-05-10 13:32:46 -07:00
ip_sockglue.c inet: add RCU protection to inet->opt 2011-04-28 13:16:35 -07:00
ipcomp.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
ipconfig.c Fix common misspellings 2011-03-31 11:26:23 -03:00
ipip.c net: call dev_alloc_name from register_netdevice 2011-05-05 10:57:45 -07:00
ipmr.c ipv4: Pass explicit saddr/daddr args to ipmr_get_route(). 2011-05-04 12:18:54 -07:00
Kconfig ipv4: Remove fib_hash. 2011-02-01 15:35:25 -08:00
Makefile net: ipv4: add IPPROTO_ICMP socket kind 2011-05-13 16:08:13 -04:00
netfilter.c netfilter: af_info: add 'strict' parameter to limit lookup to .oif 2011-04-04 17:00:54 +02:00
ping.c net: ipv4: add IPPROTO_ICMP socket kind 2011-05-13 16:08:13 -04:00
proc.c tcp: Replace time wait bucket msg by counter 2010-12-08 12:16:33 -08:00
protocol.c net: add __rcu annotations to protocol 2010-10-27 11:37:31 -07:00
raw.c ipv4: Pass flow key down into ip_append_*(). 2011-05-08 21:24:07 -07:00
route.c ipv4: Pass explicit saddr/daddr args to ipmr_get_route(). 2011-05-04 12:18:54 -07:00
syncookies.c inet: add RCU protection to inet->opt 2011-04-28 13:16:35 -07:00
sysctl_net_ipv4.c net: ipv4: add IPPROTO_ICMP socket kind 2011-05-13 16:08:13 -04:00
tcp.c net: Allow no-cache copy from user on transmit 2011-04-04 22:30:30 -07:00
tcp_bic.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_cong.c net/ipv4: Eliminate kstrdup memory leak 2010-08-27 19:31:56 -07:00
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: diag: Dont report negative values for rx queue 2009-12-03 16:06:13 -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: Make undo_ssthresh arg to tcp_undo_cwr() a bool. 2011-03-22 19:37:11 -07:00
tcp_ipv4.c ipv4: Pass explicit daddr arg to ip_send_reply(). 2011-05-10 13:32:46 -07:00
tcp_lp.c Fix common misspellings 2011-03-31 11:26:23 -03:00
tcp_minisocks.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-12-08 13:47:38 -08:00
tcp_output.c inet: Pass flowi to ->queue_xmit(). 2011-05-08 15:28:28 -07:00
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 tcp: Remove debug macro of TCP_CHECK_TIMER 2011-02-20 11:10:14 -08:00
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
tunnel4.c tunnels: add __rcu annotations 2010-10-27 11:37:32 -07:00
udp.c ipv4: udp: Eliminate remaining uses of rt->rt_src 2011-05-10 13:32:47 -07:00
udp_impl.h net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
udplite.c net: fix nulls list corruptions in sk_prot_alloc 2010-12-16 14:26:56 -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 xfrm: Assign the inner mode output function to the dst entry 2011-05-10 15:03:34 -07:00
xfrm4_policy.c ipv4: xfrm: Eliminate ->rt_src reference in policy code. 2011-05-10 13:32:48 -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 net: struct xfrm_tunnel in read_mostly section 2010-08-30 13:50:45 -07:00