diff options
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 8f6ba4deadd5..e9b705a4f66e 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1543,6 +1543,10 @@ static inline struct sk_buff *tcp_rtx_queue_tail(const struct sock *sk) { struct sk_buff *skb = tcp_send_head(sk); + /* empty retransmit queue, for example due to zero window */ + if (skb == tcp_write_queue_head(sk)) + return NULL; + return skb ? tcp_write_queue_prev(sk, skb) : tcp_write_queue_tail(sk); } |