diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp_input.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 5573202f086..7d0958785bf 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2138,7 +2138,9 @@ static void tcp_mark_head_lost(struct sock *sk, int packets) { struct tcp_sock *tp = tcp_sk(sk); struct sk_buff *skb; - int cnt; + int cnt, oldcnt; + int err; + unsigned int mss; BUG_TRAP(packets <= tp->packets_out); if (tp->lost_skb_hint) { @@ -2157,13 +2159,25 @@ static void tcp_mark_head_lost(struct sock *sk, int packets) tp->lost_skb_hint = skb; tp->lost_cnt_hint = cnt; + if (after(TCP_SKB_CB(skb)->end_seq, tp->high_seq)) + break; + + oldcnt = cnt; if (tcp_is_fack(tp) || tcp_is_reno(tp) || (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED)) cnt += tcp_skb_pcount(skb); - if ((cnt > packets) || - after(TCP_SKB_CB(skb)->end_seq, tp->high_seq)) - break; + if (cnt > packets) { + if (tcp_is_sack(tp) || (oldcnt >= packets)) + break; + + mss = skb_shinfo(skb)->gso_size; + err = tcp_fragment(sk, skb, (packets - oldcnt) * mss, mss); + if (err < 0) + break; + cnt = packets; + } + if (!(TCP_SKB_CB(skb)->sacked & (TCPCB_SACKED_ACKED|TCPCB_LOST))) { TCP_SKB_CB(skb)->sacked |= TCPCB_LOST; tp->lost_out += tcp_skb_pcount(skb); |