sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

tcp_input: Don't put back sndseq on an old ack

Browse Source
This commit is contained in:
YAMAMOTO Takashi 2021-07-27 13:55:04 +09:00 committed by Xiang Xiao
parent e53f989997
commit b815a2c3a8
1 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
net/tcp/tcp_input.c
View File

@ -582,6 +582,7 @@ found:
{
uint32_t unackseq;
uint32_t ackseq;
uint32_t sndseq;
/* The next sequence number is equal to the current sequence
* number (sndseq) plus the size of the outstanding, unacknowledged
@ -639,11 +640,15 @@ found:
* be beyond ackseq.
*/
sndseq = tcp_getsequence(conn->sndseq);
if (TCP_SEQ_LT(sndseq, ackseq))
{
ninfo("sndseq: %08" PRIx32 "->%08" PRIx32
" unackseq: %08" PRIx32 " new tx_unacked: %" PRId32 "\n",
tcp_getsequence(conn->sndseq), ackseq, unackseq,
(uint32_t)conn->tx_unacked);
tcp_setsequence(conn->sndseq, ackseq);
}
/* Do RTT estimation, unless we have done retransmissions. */