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-rw-r--r--include/net/tcp.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 299872d461c7..39d0df6afe47 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -719,6 +719,11 @@ static inline void tcp_ca_event(struct sock *sk, const enum tcp_ca_event event)
icsk->icsk_ca_ops->cwnd_event(sk, event);
}
+static inline unsigned int tcp_left_out(const struct tcp_sock *tp)
+{
+ return tp->sacked_out + tp->lost_out;
+}
+
/* This determines how many packets are "in the network" to the best
* of our knowledge. In many cases it is conservative, but where
* detailed information is available from the receiver (via SACK
@@ -735,8 +740,7 @@ static inline void tcp_ca_event(struct sock *sk, const enum tcp_ca_event event)
*/
static inline unsigned int tcp_packets_in_flight(const struct tcp_sock *tp)
{
- return tp->packets_out - (tp->sacked_out + tp->lost_out) +
- tp->retrans_out;
+ return tp->packets_out - tcp_left_out(tp) + tp->retrans_out;
}
/* If cwnd > ssthresh, we may raise ssthresh to be half-way to cwnd.
@@ -756,8 +760,7 @@ static inline __u32 tcp_current_ssthresh(const struct sock *sk)
static inline void tcp_sync_left_out(struct tcp_sock *tp)
{
- BUG_ON(tp->rx_opt.sack_ok &&
- (tp->sacked_out + tp->lost_out > tp->packets_out));
+ BUG_ON(tp->rx_opt.sack_ok && (tcp_left_out(tp) > tp->packets_out));
}
extern void tcp_enter_cwr(struct sock *sk, const int set_ssthresh);