diff options
Diffstat (limited to 'net/ipv4/fib_notifier.c')
| -rw-r--r-- | net/ipv4/fib_notifier.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/net/ipv4/fib_notifier.c b/net/ipv4/fib_notifier.c index 0c28bd469a68..b1551c26554b 100644 --- a/net/ipv4/fib_notifier.c +++ b/net/ipv4/fib_notifier.c @@ -6,7 +6,6 @@ #include <linux/export.h> #include <net/net_namespace.h> #include <net/fib_notifier.h> -#include <net/netns/ipv4.h> #include <net/ip_fib.h> int call_fib4_notifier(struct notifier_block *nb, @@ -23,15 +22,15 @@ int call_fib4_notifiers(struct net *net, enum fib_event_type event_type, ASSERT_RTNL(); info->family = AF_INET; - net->ipv4.fib_seq++; + /* Paired with READ_ONCE() in fib4_seq_read() */ + WRITE_ONCE(net->ipv4.fib_seq, net->ipv4.fib_seq + 1); return call_fib_notifiers(net, event_type, info); } -static unsigned int fib4_seq_read(struct net *net) +static unsigned int fib4_seq_read(const struct net *net) { - ASSERT_RTNL(); - - return net->ipv4.fib_seq + fib4_rules_seq_read(net); + /* Paired with WRITE_ONCE() in call_fib4_notifiers() */ + return READ_ONCE(net->ipv4.fib_seq) + fib4_rules_seq_read(net); } static int fib4_dump(struct net *net, struct notifier_block *nb, |