[PATCH net-next 4/6] ipv6: ipv6_chk_prefix() rcu conversion
From: Eric Dumazet <edumazet@google.com>
Date: 2017-10-08 02:30:45
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Signed-off-by: Eric Dumazet <edumazet@google.com> --- net/ipv6/addrconf.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 33ee84c2512b50e316a0a6ed38a604a382ce5319..ea63442209bf268f1a19b5e014cb8c7e34fd40b4 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c@@ -1880,22 +1880,20 @@ EXPORT_SYMBOL(ipv6_chk_custom_prefix); int ipv6_chk_prefix(const struct in6_addr *addr, struct net_device *dev) { - struct inet6_dev *idev; - struct inet6_ifaddr *ifa; + const struct inet6_ifaddr *ifa; + const struct inet6_dev *idev; int onlink; onlink = 0; rcu_read_lock(); idev = __in6_dev_get(dev); if (idev) { - read_lock_bh(&idev->lock); - list_for_each_entry(ifa, &idev->addr_list, if_list) { + list_for_each_entry_rcu(ifa, &idev->addr_list, if_list) { onlink = ipv6_prefix_equal(addr, &ifa->addr, ifa->prefix_len); if (onlink) break; } - read_unlock_bh(&idev->lock); } rcu_read_unlock(); return onlink;
--
2.14.2.920.gcf0c67979c-goog