Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...

[linux-drm-fsl-dcu.git] / net / ipv4 / tcp_metrics.c

diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index 2ab09cbae74d29155d08f7dd701851136d205e0f..06493736fbc826842876180a24510d9e348cb7f3 100644 (file)
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -663,10 +663,13 @@ void tcp_fastopen_cache_get(struct sock *sk, u16 *mss,
 void tcp_fastopen_cache_set(struct sock *sk, u16 mss,
                            struct tcp_fastopen_cookie *cookie, bool syn_lost)
 {
+       struct dst_entry *dst = __sk_dst_get(sk);
        struct tcp_metrics_block *tm;
 
+       if (!dst)
+               return;
        rcu_read_lock();
-       tm = tcp_get_metrics(sk, __sk_dst_get(sk), true);
+       tm = tcp_get_metrics(sk, dst, true);
        if (tm) {
                struct tcp_fastopen_metrics *tfom = &tm->tcpm_fastopen;
 
@@ -988,7 +991,7 @@ static int tcp_metrics_nl_cmd_del(struct sk_buff *skb, struct genl_info *info)
        return 0;
 }
 
-static struct genl_ops tcp_metrics_nl_ops[] = {
+static const struct genl_ops tcp_metrics_nl_ops[] = {
        {
                .cmd = TCP_METRICS_CMD_GET,
                .doit = tcp_metrics_nl_cmd_get,
@@ -1079,8 +1082,7 @@ void __init tcp_metrics_init(void)
        if (ret < 0)
                goto cleanup;
        ret = genl_register_family_with_ops(&tcp_metrics_nl_family,
-                                           tcp_metrics_nl_ops,
-                                           ARRAY_SIZE(tcp_metrics_nl_ops));
+                                           tcp_metrics_nl_ops);
        if (ret < 0)
                goto cleanup_subsys;
        return;