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tcp: fix tcp can not retransmit timely when ACK with TCP_NEWDATA

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The current receive data needs to be handled by following
tcp_recvhandler or tcp_data_event. Notify driver to send the
message and marked as rexmit

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu 2024-11-08 10:37:52 +08:00 committed by Xiang Xiao
parent 19fc0628ae
commit af6db95fea
1 changed files with 15 additions and 7 deletions
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22
net/tcp/tcp_send_buffered.c
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@ -593,18 +593,26 @@ static uint16_t psock_send_eventhandler(FAR struct net_driver_s *dev,
#ifdef CONFIG_NET_TCP_CC_NEWRENO
if (conn->dupacks >= TCP_FAST_RETRANSMISSION_THRESH)
#else
/* Reset the duplicate ack counter */
if ((flags & TCP_NEWDATA) != 0)
{
TCP_WBNACK(wrb) = 0;
}
/* Duplicate ACK? Retransmit data if need */
if (++TCP_WBNACK(wrb) == TCP_FAST_RETRANSMISSION_THRESH)
#endif
{
/* Fast retransmission has been triggered */
if ((flags & TCP_NEWDATA) != 0)
{
/* The current receive data needs to be handled by
* following tcp_recvhandler or tcp_data_event. Notify
* driver to send the message and marked as rexmit
*/
TCP_WBNACK(wrb) = 0;
conn->timeout = true;
netdev_txnotify_dev(conn->dev);
return flags;
}
#ifdef CONFIG_NET_TCP_SELECTIVE_ACK
if ((conn->flags & TCP_SACK) &&
(tcp->tcpoffset & 0xf0) > 0x50)