diff options
| -rw-r--r-- | include/net/tcp.h | 7 | ||||
| -rw-r--r-- | net/ipv4/tcp_input.c | 4 | ||||
| -rw-r--r-- | net/ipv4/tcp_output.c | 8 |
3 files changed, 14 insertions, 5 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 220f54cf42e..ea815723d41 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1037,10 +1037,15 @@ static inline void tcp_mib_init(struct net *net) } /* from STCP */ -static inline void tcp_clear_all_retrans_hints(struct tcp_sock *tp) +static inline void tcp_clear_retrans_hints_partial(struct tcp_sock *tp) { tp->lost_skb_hint = NULL; tp->scoreboard_skb_hint = NULL; +} + +static inline void tcp_clear_all_retrans_hints(struct tcp_sock *tp) +{ + tcp_clear_retrans_hints_partial(tp); tp->retransmit_skb_hint = NULL; } diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index d017aed6edd..44a4fffc2cc 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2925,7 +2925,9 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets) tcp_unlink_write_queue(skb, sk); sk_wmem_free_skb(sk, skb); - tcp_clear_all_retrans_hints(tp); + tcp_clear_retrans_hints_partial(tp); + if (skb == tp->retransmit_skb_hint) + tp->retransmit_skb_hint = NULL; } if (skb && (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED)) diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index f900fae8b87..239cea7b6c0 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -750,7 +750,7 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, BUG_ON(len > skb->len); - tcp_clear_all_retrans_hints(tp); + tcp_clear_retrans_hints_partial(tp); nsize = skb_headlen(skb) - len; if (nsize < 0) nsize = 0; @@ -1823,7 +1823,9 @@ static void tcp_retrans_try_collapse(struct sock *sk, struct sk_buff *skb, tp->packets_out -= tcp_skb_pcount(next_skb); /* changed transmit queue under us so clear hints */ - tcp_clear_all_retrans_hints(tp); + tcp_clear_retrans_hints_partial(tp); + if (next_skb == tp->retransmit_skb_hint) + tp->retransmit_skb_hint = skb; sk_wmem_free_skb(sk, next_skb); } @@ -1853,7 +1855,7 @@ void tcp_simple_retransmit(struct sock *sk) } } - tcp_clear_all_retrans_hints(tp); + tcp_clear_retrans_hints_partial(tp); if (prior_lost == tp->lost_out) return; |