diff options
Diffstat (limited to 'net/ipv4/tcp_recovery.c')
| -rw-r--r-- | net/ipv4/tcp_recovery.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/net/ipv4/tcp_recovery.c b/net/ipv4/tcp_recovery.c index f38dba5aed7a..7ea0377229c0 100644 --- a/net/ipv4/tcp_recovery.c +++ b/net/ipv4/tcp_recovery.c @@ -32,17 +32,11 @@ static void tcp_rack_mark_skb_lost(struct sock *sk, struct sk_buff *skb) * The current version is only used after recovery starts but can be * easily extended to detect the first loss. */ -int tcp_rack_mark_lost(struct sock *sk) +static void tcp_rack_detect_loss(struct sock *sk) { struct tcp_sock *tp = tcp_sk(sk); struct sk_buff *skb; - u32 reo_wnd, prior_retrans = tp->retrans_out; - - if (inet_csk(sk)->icsk_ca_state < TCP_CA_Recovery || !tp->rack.advanced) - return 0; - - /* Reset the advanced flag to avoid unnecessary queue scanning */ - tp->rack.advanced = 0; + u32 reo_wnd; /* To be more reordering resilient, allow min_rtt/4 settling delay * (lower-bounded to 1000uS). We use min_rtt instead of the smoothed @@ -82,7 +76,17 @@ int tcp_rack_mark_lost(struct sock *sk) break; } } - return prior_retrans - tp->retrans_out; +} + +void tcp_rack_mark_lost(struct sock *sk) +{ + struct tcp_sock *tp = tcp_sk(sk); + + if (inet_csk(sk)->icsk_ca_state < TCP_CA_Recovery || !tp->rack.advanced) + return; + /* Reset the advanced flag to avoid unnecessary queue scanning */ + tp->rack.advanced = 0; + tcp_rack_detect_loss(sk); } /* Record the most recently (re)sent time among the (s)acked packets */ |