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Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r--net/ipv4/tcp_input.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 0a42e9340346..0f00966b1784 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1995,8 +1995,7 @@ static void tcp_verify_retransmit_hint(struct tcp_sock *tp,
1995} 1995}
1996 1996
1997/* Mark head of queue up as lost. */ 1997/* Mark head of queue up as lost. */
1998static void tcp_mark_head_lost(struct sock *sk, 1998static void tcp_mark_head_lost(struct sock *sk, int packets)
1999 int packets, u32 high_seq)
2000{ 1999{
2001 struct tcp_sock *tp = tcp_sk(sk); 2000 struct tcp_sock *tp = tcp_sk(sk);
2002 struct sk_buff *skb; 2001 struct sk_buff *skb;
@@ -2019,7 +2018,7 @@ static void tcp_mark_head_lost(struct sock *sk,
2019 tp->lost_skb_hint = skb; 2018 tp->lost_skb_hint = skb;
2020 tp->lost_cnt_hint = cnt; 2019 tp->lost_cnt_hint = cnt;
2021 cnt += tcp_skb_pcount(skb); 2020 cnt += tcp_skb_pcount(skb);
2022 if (cnt > packets || after(TCP_SKB_CB(skb)->end_seq, high_seq)) 2021 if (cnt > packets || after(TCP_SKB_CB(skb)->end_seq, tp->high_seq))
2023 break; 2022 break;
2024 if (!(TCP_SKB_CB(skb)->sacked & (TCPCB_SACKED_ACKED|TCPCB_LOST))) { 2023 if (!(TCP_SKB_CB(skb)->sacked & (TCPCB_SACKED_ACKED|TCPCB_LOST))) {
2025 TCP_SKB_CB(skb)->sacked |= TCPCB_LOST; 2024 TCP_SKB_CB(skb)->sacked |= TCPCB_LOST;
@@ -2040,9 +2039,9 @@ static void tcp_update_scoreboard(struct sock *sk)
2040 int lost = tp->fackets_out - tp->reordering; 2039 int lost = tp->fackets_out - tp->reordering;
2041 if (lost <= 0) 2040 if (lost <= 0)
2042 lost = 1; 2041 lost = 1;
2043 tcp_mark_head_lost(sk, lost, tp->high_seq); 2042 tcp_mark_head_lost(sk, lost);
2044 } else { 2043 } else {
2045 tcp_mark_head_lost(sk, 1, tp->high_seq); 2044 tcp_mark_head_lost(sk, 1);
2046 } 2045 }
2047 2046
2048 /* New heuristics: it is possible only after we switched 2047 /* New heuristics: it is possible only after we switched
@@ -2381,7 +2380,7 @@ tcp_fastretrans_alert(struct sock *sk, int pkts_acked, int flag)
2381 before(tp->snd_una, tp->high_seq) && 2380 before(tp->snd_una, tp->high_seq) &&
2382 icsk->icsk_ca_state != TCP_CA_Open && 2381 icsk->icsk_ca_state != TCP_CA_Open &&
2383 tp->fackets_out > tp->reordering) { 2382 tp->fackets_out > tp->reordering) {
2384 tcp_mark_head_lost(sk, tp->fackets_out-tp->reordering, tp->high_seq); 2383 tcp_mark_head_lost(sk, tp->fackets_out - tp->reordering);
2385 NET_INC_STATS_BH(LINUX_MIB_TCPLOSS); 2384 NET_INC_STATS_BH(LINUX_MIB_TCPLOSS);
2386 } 2385 }
2387 2386