diff options
| author | Dave Airlie <airlied@starflyer.(none)> | 2005-09-25 13:14:45 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@linux.ie> | 2005-09-25 13:14:45 +1000 |
| commit | 4e0c1159d83a658d1ffba5bc3442f4ec4cadb436 (patch) | |
| tree | 36a5079ba7ba9b9e0f2f633356705b980940eac4 /net/ipv4/tcp_input.c | |
| parent | ea98a92ff18c03bf7f4d21536986cbbcb4c10cd9 (diff) | |
| parent | ef6bd6eb90ad72ee8ee7ba8b271f27102e9a90c1 (diff) | |
update from upstream
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 1afb080bdf0c..a7537c7bbd06 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -923,14 +923,6 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_ int flag = 0; int i; - /* So, SACKs for already sent large segments will be lost. - * Not good, but alternative is to resegment the queue. */ - if (sk->sk_route_caps & NETIF_F_TSO) { - sk->sk_route_caps &= ~NETIF_F_TSO; - sock_set_flag(sk, SOCK_NO_LARGESEND); - tp->mss_cache = tp->mss_cache; - } - if (!tp->sacked_out) tp->fackets_out = 0; prior_fackets = tp->fackets_out; @@ -978,20 +970,42 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_ flag |= FLAG_DATA_LOST; sk_stream_for_retrans_queue(skb, sk) { - u8 sacked = TCP_SKB_CB(skb)->sacked; - int in_sack; + int in_sack, pcount; + u8 sacked; /* The retransmission queue is always in order, so * we can short-circuit the walk early. */ - if(!before(TCP_SKB_CB(skb)->seq, end_seq)) + if (!before(TCP_SKB_CB(skb)->seq, end_seq)) break; - fack_count += tcp_skb_pcount(skb); - in_sack = !after(start_seq, TCP_SKB_CB(skb)->seq) && !before(end_seq, TCP_SKB_CB(skb)->end_seq); + pcount = tcp_skb_pcount(skb); + + if (pcount > 1 && !in_sack && + after(TCP_SKB_CB(skb)->end_seq, start_seq)) { + unsigned int pkt_len; + + in_sack = !after(start_seq, + TCP_SKB_CB(skb)->seq); + + if (!in_sack) + pkt_len = (start_seq - + TCP_SKB_CB(skb)->seq); + else + pkt_len = (end_seq - + TCP_SKB_CB(skb)->seq); + if (tcp_fragment(sk, skb, pkt_len, skb_shinfo(skb)->tso_size)) + break; + pcount = tcp_skb_pcount(skb); + } + + fack_count += pcount; + + sacked = TCP_SKB_CB(skb)->sacked; + /* Account D-SACK for retransmitted packet. */ if ((dup_sack && in_sack) && (sacked & TCPCB_RETRANS) && |