diff options
Diffstat (limited to 'net/ipv4/ip_output.c')
| -rw-r--r-- | net/ipv4/ip_output.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index f07ce051760d..9fc7be2c2033 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -1387,8 +1387,8 @@ struct sk_buff *__ip_make_skb(struct sock *sk, struct ip_options *opt = NULL; struct rtable *rt = (struct rtable *)cork->dst; struct iphdr *iph; + u8 pmtudisc, ttl; __be16 df = 0; - __u8 ttl; skb = __skb_dequeue(queue); if (!skb) @@ -1418,8 +1418,9 @@ struct sk_buff *__ip_make_skb(struct sock *sk, /* DF bit is set when we want to see DF on outgoing frames. * If ignore_df is set too, we still allow to fragment this frame * locally. */ - if (inet->pmtudisc == IP_PMTUDISC_DO || - inet->pmtudisc == IP_PMTUDISC_PROBE || + pmtudisc = READ_ONCE(inet->pmtudisc); + if (pmtudisc == IP_PMTUDISC_DO || + pmtudisc == IP_PMTUDISC_PROBE || (skb->len <= dst_mtu(&rt->dst) && ip_dont_fragment(sk, &rt->dst))) df = htons(IP_DF); |