diff options
-rw-r--r-- | net/ipv4/tcp_input.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 97d57676b8ee..e6291dde3348 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c | |||
@@ -1379,6 +1379,11 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *prev, | |||
1379 | 1379 | ||
1380 | BUG_ON(!pcount); | 1380 | BUG_ON(!pcount); |
1381 | 1381 | ||
1382 | /* Tweak before seqno plays */ | ||
1383 | if (!tcp_is_fack(tp) && tcp_is_sack(tp) && tp->lost_skb_hint && | ||
1384 | !before(TCP_SKB_CB(tp->lost_skb_hint)->seq, TCP_SKB_CB(skb)->seq)) | ||
1385 | tp->lost_cnt_hint += pcount; | ||
1386 | |||
1382 | TCP_SKB_CB(prev)->end_seq += shifted; | 1387 | TCP_SKB_CB(prev)->end_seq += shifted; |
1383 | TCP_SKB_CB(skb)->seq += shifted; | 1388 | TCP_SKB_CB(skb)->seq += shifted; |
1384 | 1389 | ||
@@ -1408,8 +1413,6 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *prev, | |||
1408 | /* Difference in this won't matter, both ACKed by the same cumul. ACK */ | 1413 | /* Difference in this won't matter, both ACKed by the same cumul. ACK */ |
1409 | TCP_SKB_CB(prev)->sacked |= (TCP_SKB_CB(skb)->sacked & TCPCB_EVER_RETRANS); | 1414 | TCP_SKB_CB(prev)->sacked |= (TCP_SKB_CB(skb)->sacked & TCPCB_EVER_RETRANS); |
1410 | 1415 | ||
1411 | tcp_clear_all_retrans_hints(tp); | ||
1412 | |||
1413 | if (skb->len > 0) { | 1416 | if (skb->len > 0) { |
1414 | BUG_ON(!tcp_skb_pcount(skb)); | 1417 | BUG_ON(!tcp_skb_pcount(skb)); |
1415 | return 0; | 1418 | return 0; |
@@ -1417,6 +1420,15 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *prev, | |||
1417 | 1420 | ||
1418 | /* Whole SKB was eaten :-) */ | 1421 | /* Whole SKB was eaten :-) */ |
1419 | 1422 | ||
1423 | if (skb == tp->retransmit_skb_hint) | ||
1424 | tp->retransmit_skb_hint = prev; | ||
1425 | if (skb == tp->scoreboard_skb_hint) | ||
1426 | tp->scoreboard_skb_hint = prev; | ||
1427 | if (skb == tp->lost_skb_hint) { | ||
1428 | tp->lost_skb_hint = prev; | ||
1429 | tp->lost_cnt_hint -= tcp_skb_pcount(prev); | ||
1430 | } | ||
1431 | |||
1420 | TCP_SKB_CB(skb)->flags |= TCP_SKB_CB(prev)->flags; | 1432 | TCP_SKB_CB(skb)->flags |= TCP_SKB_CB(prev)->flags; |
1421 | if (skb == tcp_highest_sack(sk)) | 1433 | if (skb == tcp_highest_sack(sk)) |
1422 | tcp_advance_highest_sack(sk, skb); | 1434 | tcp_advance_highest_sack(sk, skb); |