ipv6: fix sparse warning on rt6i_node
authorWei Wang <weiwan@google.com>
Fri, 25 Aug 2017 22:03:10 +0000 (15:03 -0700)
committerDavid S. Miller <davem@davemloft.net>
Mon, 28 Aug 2017 22:34:40 +0000 (15:34 -0700)
commit4e587ea71bf924f7dac621f1351653bd41e446cb
treed45682c9d22fbedfbb2c807fe1845e9a376c1898
parent0f3086868e8889a823a6e0f3d299102aa895d947
ipv6: fix sparse warning on rt6i_node

Commit c5cff8561d2d adds rcu grace period before freeing fib6_node. This
generates a new sparse warning on rt->rt6i_node related code:
  net/ipv6/route.c:1394:30: error: incompatible types in comparison
  expression (different address spaces)
  ./include/net/ip6_fib.h:187:14: error: incompatible types in comparison
  expression (different address spaces)

This commit adds "__rcu" tag for rt6i_node and makes sure corresponding
rcu API is used for it.
After this fix, sparse no longer generates the above warning.

Fixes: c5cff8561d2d ("ipv6: add rcu grace period before freeing fib6_node")
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/ip6_fib.h
net/ipv6/addrconf.c
net/ipv6/ip6_fib.c
net/ipv6/route.c