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Eric Dumazet 96631ed16c udp: introduce sk_for_each_rcu_safenext() 
Corey Minyard found a race added in commit 271b72c7fa
(udp: RCU handling for Unicast packets.)

 "If the socket is moved from one list to another list in-between the
 time the hash is calculated and the next field is accessed, and the
 socket has moved to the end of the new list, the traversal will not
 complete properly on the list it should have, since the socket will
 be on the end of the new list and there's not a way to tell it's on a
 new list and restart the list traversal.  I think that this can be
 solved by pre-fetching the "next" field (with proper barriers) before
 checking the hash."

This patch corrects this problem, introducing a new
sk_for_each_rcu_safenext() macro.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2008-10-29 11:19:58 -07:00
..
netfilter net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
Kconfig ipsec: ipcomp - Merge IPComp implementations 2008-07-25 02:54:40 -07:00
Makefile [IPV6] MROUTE: Support multicast forwarding. 2008-04-05 22:33:38 +09:00
addrconf.c net: replace all current users of NIP6_SEQFMT with %#p6 2008-10-28 16:05:40 -07:00
addrconf_core.c [IPV6]: ipv6_addr_type() doesn't know about RFC4193 addresses. 2007-07-31 02:28:21 -07:00
addrlabel.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
af_inet6.c netns: mib6 section fixlet 2008-10-13 18:54:07 -07:00
ah6.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
anycast.c net: replace all current users of NIP6_SEQFMT with %#p6 2008-10-28 16:05:40 -07:00
datagram.c IPv6: datagram_send_ctl() should exit immediately when an error occured 2008-07-29 23:57:58 -07:00
esp6.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
exthdrs.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
exthdrs_core.c [NET] IPV6: Fix whitespace errors. 2007-02-10 23:19:42 -08:00
fib6_rules.c netns: Add network namespace argument to rt6_fill_node() and ipv6_dev_get_saddr() 2008-08-14 15:33:21 -07:00
icmp.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
inet6_connection_sock.c net: convert BUG_TRAP to generic WARN_ON 2008-07-25 21:43:18 -07:00
inet6_hashtables.c net: convert BUG_TRAP to generic WARN_ON 2008-07-25 21:43:18 -07:00
ip6_fib.c netns: Add network namespace argument to rt6_fill_node() and ipv6_dev_get_saddr() 2008-08-14 15:33:21 -07:00
ip6_flowlabel.c net: replace all current users of NIP6_SEQFMT with %#p6 2008-10-28 16:05:40 -07:00
ip6_input.c ipv6: added net argument to IP6_INC_STATS_BH 2008-10-08 11:09:27 -07:00
ip6_output.c net: reduce structures when XFRM=n 2008-10-28 13:24:06 -07:00
ip6_tunnel.c net: Use hton[sl]() instead of __constant_hton[sl]() where applicable 2008-09-20 22:20:49 -07:00
ip6mr.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
ipcomp6.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
ipv6_sockglue.c ipv6: Fix the return interface index when get it while no message is received. 2008-08-17 23:21:52 -07:00
mcast.c net: replace all current users of NIP6_SEQFMT with %#p6 2008-10-28 16:05:40 -07:00
mip6.c net: convert BUG_TRAP to generic WARN_ON 2008-07-25 21:43:18 -07:00
ndisc.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
netfilter.c netns: correct mib stats in ip6_route_me_harder() 2008-10-14 22:55:21 -07:00
proc.c ipv6: making ip and icmp statistics per/namespace 2008-10-08 11:16:45 -07:00
protocol.c net: remove CVS keywords 2008-06-11 21:00:38 -07:00
raw.c netns: add net parameter to IP6_INC_STATS 2008-10-08 10:54:51 -07:00
reassembly.c ipv6: added net argument to IP6_ADD_STATS_BH 2008-10-08 11:13:31 -07:00
route.c net: replace all current users of NIP6_SEQFMT with %#p6 2008-10-28 16:05:40 -07:00
sit.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-06-16 18:25:48 -07:00
syncookies.c tcp: Fix IPv6 fallout from 'Port redirection support for TCP' 2008-10-19 23:35:58 -07:00
sysctl_net_ipv6.c ipv6: sysctl fixes 2008-08-25 15:18:15 -07:00
tcp_ipv6.c net: replace uses of NIP6_FMT with %p6 2008-10-28 23:02:31 -07:00
tunnel6.c [IPV6] TUNNEL6: Fix incoming packet length check for inter-protocol tunnel. 2008-06-05 04:02:32 +09:00
udp.c udp: introduce sk_for_each_rcu_safenext() 2008-10-29 11:19:58 -07:00
udp_impl.h udp: introduce struct udp_table and multiple spinlocks 2008-10-29 01:41:45 -07:00
udplite.c udp: RCU handling for Unicast packets. 2008-10-29 02:11:14 -07:00
xfrm6_input.c [XFRM] IPV6: Optimize xfrm6_input_addr(). 2008-03-25 10:23:56 +09:00
xfrm6_mode_beet.c ipsec: Interfamily IPSec BEET, ipv4-inner ipv6-outer 2008-08-06 02:40:25 -07:00
xfrm6_mode_ro.c [IPSEC]: Make x->lastused an unsigned long 2008-01-28 14:53:52 -08:00
xfrm6_mode_transport.c [IPSEC]: Use IPv6 calling convention as the convention for x->mode->output 2007-10-10 16:55:54 -07:00
xfrm6_mode_tunnel.c [IPSEC]: Fix inter address family IPsec tunnel handling. 2008-03-24 14:51:51 -07:00
xfrm6_output.c [IPSEC]: Fix inter address family IPsec tunnel handling. 2008-03-24 14:51:51 -07:00
xfrm6_policy.c netns: Add network namespace argument to rt6_fill_node() and ipv6_dev_get_saddr() 2008-08-14 15:33:21 -07:00
xfrm6_state.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-03-27 18:48:56 -07:00
xfrm6_tunnel.c [XFRM] IPV6: Optimize __xfrm_tunnel_alloc_spi(). 2008-03-25 10:23:57 +09:00