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linux/net/ipv6
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Kuniyuki Iwashima dd103c9a53 neighbour: Remove __pneigh_lookup(). 
__pneigh_lookup() is the lockless version of pneigh_lookup(),
but its only caller pndisc_is_router() holds the table lock and
reads pneigh_netry.flags.

This is because accessing pneigh_entry after pneigh_lookup() was
illegal unless the caller holds RTNL or the table lock.

Now, pneigh_entry is guaranteed to be alive during the RCU critical
section.

Let's call pneigh_lookup() and use READ_ONCE() for n->flags in
pndisc_is_router() and remove __pneigh_lookup().

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250716221221.442239-13-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-17 16:25:21 -07:00
..
ila ipv6: adopt dst_dev() helper 2025-07-02 14:32:30 -07:00
netfilter ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
addrconf.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-07-11 11:42:38 -07:00
addrconf_core.c
addrlabel.c net: replace ADDRLABEL with dynamic debug 2025-07-08 15:04:05 +02:00
af_inet6.c net: annotate races around sk->sk_uid 2025-06-23 17:04:03 -07:00
ah6.c
anycast.c dev: Pass netdevice_tracker to dev_get_by_flags_rcu(). 2025-07-14 17:11:14 -07:00
calipso.c net: ipv6: Fix spelling mistake 2025-07-02 15:42:29 -07:00
datagram.c net: dst: annotate data-races around dst->obsolete 2025-07-02 14:32:29 -07:00
esp6.c espintcp: remove encap socket caching to avoid reference leak 2025-04-14 11:59:17 +02:00
esp6_offload.c xfrm: Add an inbound percpu state cache. 2024-10-29 11:56:18 +01:00
exthdrs.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
exthdrs_core.c
exthdrs_offload.c
fib6_notifier.c net: do not acquire rtnl in fib_seq_sum() 2024-10-11 15:35:05 -07:00
fib6_rules.c ipv6: fib_rules: Add DSCP mask matching 2025-02-21 16:08:48 -08:00
fou6.c
icmp.c ipv6: adopt dst_dev() helper 2025-07-02 14:32:30 -07:00
inet6_connection_sock.c net: annotate races around sk->sk_uid 2025-06-23 17:04:03 -07:00
inet6_hashtables.c inet: call inet6_ehashfn() once from inet6_hash_connect() 2025-03-06 15:26:02 -08:00
ioam6.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
ioam6_iptunnel.c ipv6: adopt dst_dev() helper 2025-07-02 14:32:30 -07:00
ip6_checksum.c
ip6_fib.c ipv6: Cleanup fib6_drop_pcpu_from() 2025-07-03 16:00:50 +02:00
ip6_flowlabel.c treewide: Switch/rename to timer_delete[_sync]() 2025-04-05 10:30:12 +02:00
ip6_gre.c ipv6: adopt dst_dev() helper 2025-07-02 14:32:30 -07:00
ip6_icmp.c
ip6_input.c net: preserve MSG_ZEROCOPY with forwarding 2025-07-02 15:07:16 -07:00
ip6_offload.c
ip6_offload.h
ip6_output.c neighbour: Split pneigh_lookup(). 2025-07-17 16:25:20 -07:00
ip6_tunnel.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
ip6_udp_tunnel.c ipv6: adopt dst_dev() helper 2025-07-02 14:32:30 -07:00
ip6_vti.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
ip6mr.c ipv6: ip6_mc_input() and ip6_mr_input() cleanups 2025-07-02 14:32:30 -07:00
ipcomp6.c
ipv6_sockglue.c ipv6: Remove setsockopt_needs_rtnl(). 2025-07-08 18:32:39 -07:00
Kconfig net: ipv6: select DST_CACHE from IPV6_RPL_LWTUNNEL 2024-09-22 19:52:07 +01:00
Makefile
mcast.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-07-17 11:00:33 -07:00
mcast_snoop.c
mip6.c
ndisc.c neighbour: Remove __pneigh_lookup(). 2025-07-17 16:25:21 -07:00
netfilter.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
output_core.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
ping.c net: annotate races around sk->sk_uid 2025-06-23 17:04:03 -07:00
proc.c minmax: add a few more MIN_T/MAX_T users 2024-07-28 13:41:14 -07:00
protocol.c
raw.c net: annotate races around sk->sk_uid 2025-06-23 17:04:03 -07:00
reassembly.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
route.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
rpl.c
rpl_iptunnel.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-07-17 11:00:33 -07:00
seg6.c
seg6_hmac.c ipv6: sr: Use nested-BH locking for hmac_storage 2025-05-15 15:23:31 +02:00
seg6_iptunnel.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
seg6_local.c ipv6: adopt dst_dev() helper 2025-07-02 14:32:30 -07:00
sit.c net: ipv4: Add a flags argument to iptunnel_xmit(), udp_tunnel_xmit_skb() 2025-06-17 18:18:44 -07:00
syncookies.c net: annotate races around sk->sk_uid 2025-06-23 17:04:03 -07:00
sysctl_net_ipv6.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
tcp_ao.c
tcp_ipv6.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
tcpv6_offload.c net: use sock_gen_put() when sk_state is TCP_TIME_WAIT 2025-05-01 07:00:19 -07:00
tunnel6.c
udp.c udp: move udp_memory_allocated into net_aligned_data 2025-07-02 14:22:02 -07:00
udp_impl.h udp: move udp_memory_allocated into net_aligned_data 2025-07-02 14:22:02 -07:00
udp_offload.c udp_tunnel: create a fastpath GRO lookup. 2025-04-08 18:19:41 -07:00
udplite.c udp: move udp_memory_allocated into net_aligned_data 2025-07-02 14:22:02 -07:00
xfrm6_input.c xfrm: Fix UDP GRO handling for some corner cases 2025-04-17 11:08:16 +02:00
xfrm6_output.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
xfrm6_policy.c xfrm: respect ip protocols rules criteria when performing dst lookups 2024-09-23 07:02:07 +02:00
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c