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3639339553
linux/net
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David S. Miller 3639339553 ipv4: Handle PMTU in all ICMP error handlers. 
With ip_rt_frag_needed() removed, we have to explicitly update PMTU
information in every ICMP error handler.

Create two helper functions to facilitate this.

1) ipv4_sk_update_pmtu()

   This updates the PMTU when we have a socket context to
   work with.

2) ipv4_update_pmtu()

   Raw version, used when no socket context is available.  For this
   interface, we essentially just pass in explicit arguments for
   the flow identity information we would have extracted from the
   socket.

   And you'll notice that ipv4_sk_update_pmtu() is simply implemented
   in terms of ipv4_update_pmtu()

Note that __ip_route_output_key() is used, rather than something like
ip_route_output_flow() or ip_route_output_key().  This is because we
absolutely do not want to end up with a route that does IPSEC
encapsulation and the like.  Instead, we only want the route that
would get us to the node described by the outermost IP header.

Reported-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-14 22:22:07 -07:00
..
9p net/9p: Add __force to cast of __user pointer 2012-06-04 13:51:17 -04:00
802 tokenring: delete all remaining driver support 2012-05-15 20:23:16 -04:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
appletalk appletalk: Remove out of date message in printk 2012-06-07 13:11:59 -07:00
atm net: Remove casts to same type 2012-06-04 11:45:11 -04:00
ax25 net: use consume_skb() in place of kfree_skb() 2012-06-04 11:27:40 -04:00
batman-adv batman-adv: unset the TT_CLIENT_PENDING flag if the new local entry already exists 2012-05-14 09:05:08 +02:00
bluetooth Bluetooth: Fix checking the wrong flag when accepting a socket 2012-06-05 06:26:26 +03:00
bridge netfilter: bridge: switch hook PFs to nfproto 2012-06-07 14:58:42 +02:00
caif Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-05-22 19:22:50 -07:00
can can: update documentation wording error frames -> error messages 2012-05-23 22:55:49 +02:00
ceph Merge git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2012-05-30 11:17:19 -07:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-12 21:59:18 -07:00
dcb dcbnl: Use BUG_ON() instead of BUG() 2012-06-14 01:45:46 -07:00
dccp net: include/net/sock.h cleanup 2012-05-17 04:50:21 -04:00
decnet Merge branch 'master' of git://1984.lsi.us.es/net-next 2012-06-11 12:56:14 -07:00
dns_resolver Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2012-05-21 20:27:36 -07:00
dsa dsa: Convert compare_ether_addr to ether_addr_equal 2012-05-09 20:49:19 -04:00
ethernet net, drivers/net: Convert compare_ether_addr_64bits to ether_addr_equal_64bits 2012-05-10 23:33:01 -04:00
ieee802154 ieee802154: interface type to be added 2012-05-16 15:17:08 -04:00
ipv4 ipv4: Handle PMTU in all ICMP error handlers. 2012-06-14 22:22:07 -07:00
ipv6 ipv4: Handle PMTU in all ICMP error handlers. 2012-06-14 22:22:07 -07:00
ipx ipx: Remove spurious NULL checking in ipx_ioctl(). 2012-05-19 00:51:04 -04:00
irda net: Remove casts to same type 2012-06-04 11:45:11 -04:00
iucv Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-03-22 18:15:32 -07:00
key net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-12 21:59:18 -07:00
lapb lapb: Neaten debugging 2012-05-17 18:45:20 -04:00
llc net: include/net/sock.h cleanup 2012-05-17 04:50:21 -04:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-12 21:59:18 -07:00
mac802154 mac802154: monitor device support 2012-05-16 15:17:08 -04:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-12 21:59:18 -07:00
netlabel netlabel: use GFP flags from caller instead of GFP_ATOMIC 2012-03-22 19:29:57 -04:00
netlink genetlink: Build a generic netlink family module alias 2012-05-29 22:33:56 -04:00
netrom net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-12 21:59:18 -07:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
packet af_packet: use sizeof instead of constant in spkt_device 2012-06-11 16:51:51 -07:00
phonet net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
rds rds_rdma: don't assume infiniband device is PCI 2012-05-29 17:30:07 -04:00
rfkill rfkill: Add the capability to switch all devices of all type in __rfkill_switch_all(). 2012-06-06 15:18:17 -04:00
rose net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
rxrpc ipv4: Kill ip_rt_frag_needed(). 2012-06-11 02:08:59 -07:00
sched sch_atm.c: get rid of poinless extern 2012-06-01 10:37:18 -04:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
sunrpc Merge branch 'for-3.5' of git://linux-nfs.org/~bfields/linux 2012-06-01 08:32:58 -07:00
tipc net: Remove casts to same type 2012-06-04 11:45:11 -04:00
unix af_unix: remove unix_iter_state 2012-06-09 19:06:21 -07:00
wanrouter net/wanrouter: Deprecate and schedule for removal 2012-05-24 16:22:53 -04:00
wimax net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
wireless cfg80211: validate remain-on-channel time better 2012-06-06 15:20:22 -04:00
x25 net: add a limit parameter to sk_add_backlog() 2012-04-23 22:28:28 -04:00
xfrm ipv6: fix incorrect ipsec fragment 2012-05-27 01:11:22 -04:00
compat.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2012-05-21 20:27:36 -07:00
Kconfig net: drop NET dependency from HAVE_BPF_JIT 2012-05-21 12:50:12 -07:00
Makefile econet: remove ancient bug ridden protocol 2012-05-18 01:35:08 -04:00
nonet.c
socket.c Merge branch 'for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2012-05-22 17:37:47 -07:00
sysctl_net.c net: delete all instances of special processing for token ring 2012-05-15 20:14:35 -04:00