diff options
Diffstat (limited to 'net/ipv4/tcp_output.c')
| -rw-r--r-- | net/ipv4/tcp_output.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 896e9dfbdb5c..f57b5aa51b59 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -2529,8 +2529,9 @@ static void tcp_collapse_retrans(struct sock *sk, struct sk_buff *skb) tcp_unlink_write_queue(next_skb, sk); - skb_copy_from_linear_data(next_skb, skb_put(skb, next_skb_size), - next_skb_size); + if (next_skb_size) + skb_copy_bits(next_skb, 0, skb_put(skb, next_skb_size), + next_skb_size); if (next_skb->ip_summed == CHECKSUM_PARTIAL) skb->ip_summed = CHECKSUM_PARTIAL; @@ -2567,14 +2568,11 @@ static bool tcp_can_collapse(const struct sock *sk, const struct sk_buff *skb) { if (tcp_skb_pcount(skb) > 1) return false; - /* TODO: SACK collapsing could be used to remove this condition */ - if (skb_shinfo(skb)->nr_frags != 0) - return false; if (skb_cloned(skb)) return false; if (skb == tcp_send_head(sk)) return false; - /* Some heurestics for collapsing over SACK'd could be invented */ + /* Some heuristics for collapsing over SACK'd could be invented */ if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED) return false; |