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tcp: Split BUG_ON() in tcp_tso_should_defer() into two assertions

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The two conditions triggering BUG_ON() are somewhat unrelated:
the tcp_skb_pcount() check is meant to catch TSO flaws, the
second one checks sanity of congestion window bookkeeping.

Split them into two separate BUG_ON() assertions on two lines,
so that we know which one actually triggers, when they do.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefano Brivio 2018-01-05 00:38:05 +01:00 committed by David S. Miller
parent 54dc3e3324
commit c8c9aeb519
1 changed files with 2 additions and 1 deletions
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3
net/ipv4/tcp_output.c
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@ -1944,7 +1944,8 @@ static bool tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb,
in_flight = tcp_packets_in_flight(tp);
BUG_ON(tcp_skb_pcount(skb) <= 1 || (tp->snd_cwnd <= in_flight));
BUG_ON(tcp_skb_pcount(skb) <= 1);
BUG_ON(tp->snd_cwnd <= in_flight);
send_win = tcp_wnd_end(tp) - TCP_SKB_CB(skb)->seq;