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Pedro Ribeiro 22441cfa0c IPV6: Fix default gateway criteria wrt. HIGH/LOW preference radv option 
Problem observed:
               In IPv6, in the presence of multiple routers candidates to
               default gateway in one segment, each sending a different
               value of preference, the Linux hosts connected to the
               segment weren't selecting the right one in all the
               combinations possible of LOW/MEDIUM/HIGH preference.

This patch changes two files:
include/linux/icmpv6.h
               Get the "router_pref" bitfield in the right place
               (as RFC4191 says), named the bit left with this fix as
               "home_agent" (RFC3775 say that's his function)

net/ipv6/ndisc.c
               Corrects the binary logic behind the updating of the
               router preference in the flags of the routing table

Result:
               With this two fixes applied, the default route used by
               the system was to consistent with the rules mentioned
               in RFC4191 in case of changes in the value of preference
               in router advertisements

Signed-off-by: Pedro Ribeiro <pribeiro@net.ipl.pt>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2008-10-15 16:03:01 -07:00
..
netfilter netfilter: xtables: provide invoked family value to extensions 2008-10-08 11:35:20 +02:00
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 ipv6: protocol for address routes 2008-08-23 05:16:46 -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 ipv6 netns: Address labels per namespace 2008-06-12 02:38:15 +09:00
af_inet6.c netns: mib6 section fixlet 2008-10-13 18:54:07 -07:00
ah6.c [IPSEC]: Fix bogus usage of u64 on input sequence number 2008-02-12 22:50:35 -08:00
anycast.c ipv6 netns: Make several "global" sysctl variables namespace aware. 2008-07-19 22:35:03 -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 ipsec: Interfamily IPSec BEET, ipv4-inner ipv6-outer 2008-08-06 02:40:25 -07:00
exthdrs.c ipv6: added net argument to IP6_INC_STATS_BH 2008-10-08 11:09:27 -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 ipv6: added net argument to ICMP6MSGIN_INC_STATS_BH 2008-10-08 11:15:46 -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 [IPV6] NETNS: Handle ancillary data in appropriate namespace. 2008-06-05 04:02:36 +09:00
ip6_input.c ipv6: added net argument to IP6_INC_STATS_BH 2008-10-08 11:09:27 -07:00
ip6_output.c ipv6: added net argument to ICMP6MSGOUT_INC_STATS_BH 2008-10-08 11:15:05 -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 ipv6: added net argument to IP6_INC_STATS_BH 2008-10-08 11:09:27 -07:00
ipcomp6.c ipcomp: Fix warnings after ipcomp consolidation. 2008-07-27 03:59:24 -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 ipv6: added net argument to ICMP6MSGOUT_INC_STATS_BH 2008-10-08 11:15:05 -07:00
mip6.c net: convert BUG_TRAP to generic WARN_ON 2008-07-25 21:43:18 -07:00
ndisc.c IPV6: Fix default gateway criteria wrt. HIGH/LOW preference radv option 2008-10-15 16:03:01 -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 netns: add net parameter to IP6_INC_STATS 2008-10-08 10:54:51 -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 ipv6: syncookies: free reqsk on xfrm_lookup error 2008-08-03 18:13:44 -07:00
sysctl_net_ipv6.c ipv6: sysctl fixes 2008-08-25 15:18:15 -07:00
tcp_ipv6.c tcpv6: fix error with CONFIG_TCP_MD5SIG disabled 2008-10-09 21:11:56 -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 inet: Don't lookup the socket if there's a socket attached to the skb 2008-10-07 12:41:01 -07:00
udp_impl.h net: change proto destroy method to return void 2008-06-14 17:04:49 -07:00
udplite.c netns: make uplitev6 mib per/namespace 2008-10-07 14:50:06 -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