From: Yuchung Cheng
Date: Mon, 25 Jan 2016 14:01:53 -0800
> From: Neal Cardwell
>
> This commit fixes a corner case in tcp_mark_head_lost() which was
> causing the WARN_ON(len > skb->len) in tcp_fragment() to fire.
>
> tcp_mark_head_lost() was assuming that if a packet has
> tcp_skb_pcount(skb
From: Neal Cardwell
This commit fixes a corner case in tcp_mark_head_lost() which was
causing the WARN_ON(len > skb->len) in tcp_fragment() to fire.
tcp_mark_head_lost() was assuming that if a packet has
tcp_skb_pcount(skb) of N, then it's safe to fragment off a prefix of
M*mss bytes, for any M
