Michal Kubeček 2759647247 ipv6: fix ECMP route replacement ... When replacing an IPv6 multipath route with "ip route replace", i.e. NLM_F_CREATE | NLM_F_REPLACE, fib6_add_rt2node() replaces only first matching route without fixing its siblings, resulting in corrupted siblings linked list; removing one of the siblings can then end in an infinite loop. IPv6 ECMP implementation is a bit different from IPv4 so that route replacement cannot work in exactly the same way. This should be a reasonable approximation: 1. If the new route is ECMP-able and there is a matching ECMP-able one already, replace it and all its siblings (if any). 2. If the new route is ECMP-able and no matching ECMP-able route exists, replace first matching non-ECMP-able (if any) or just add the new one. 3. If the new route is not ECMP-able, replace first matching non-ECMP-able route (if any) or add the new route. We also need to remove the NLM_F_REPLACE flag after replacing old route(s) by first nexthop of an ECMP route so that each subsequent nexthop does not replace previous one. Fixes: 51ebd31815 ("ipv6: add support of equal cost multipath (ECMP)") Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-05-20 12:02:26 -04:00
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netfilter
addrconf_core.c
addrconf.c
addrlabel.c
af_inet6.c
ah6.c
anycast.c
datagram.c
esp6.c
exthdrs_core.c
exthdrs_offload.c
exthdrs.c
fib6_rules.c
icmp.c
inet6_connection_sock.c
inet6_hashtables.c
ip6_checksum.c
ip6_fib.c	ipv6: fix ECMP route replacement	2015-05-20 12:02:26 -04:00
ip6_flowlabel.c
ip6_gre.c
ip6_icmp.c
ip6_input.c
ip6_offload.c
ip6_offload.h
ip6_output.c	ipv6: Fix udp checksums with raw sockets	2015-05-14 22:27:03 -04:00
ip6_tunnel.c
ip6_udp_tunnel.c
ip6_vti.c
ip6mr.c
ipcomp6.c
ipv6_sockglue.c
Kconfig
Makefile
mcast.c
mip6.c
ndisc.c
netfilter.c
output_core.c
ping.c
proc.c
protocol.c
raw.c
reassembly.c
route.c	ipv6: fix ECMP route replacement	2015-05-20 12:02:26 -04:00
sit.c
syncookies.c
sysctl_net_ipv6.c
tcp_ipv6.c	tcp/ipv6: fix flow label setting in TIME_WAIT state	2015-05-17 23:41:59 -04:00
tcpv6_offload.c
tunnel6.c
udp_impl.h
udp_offload.c
udp.c	net/ipv6/udp: Fix ipv6 multicast socket filter regression	2015-05-19 16:34:43 -04:00
udplite.c
xfrm6_input.c
xfrm6_mode_beet.c
xfrm6_mode_ro.c
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c
xfrm6_output.c
xfrm6_policy.c
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c