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net/tcp: correct the available iobs count if throttle is enabled

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The number of available iobs is already sub in iob_navail(true) on line 114

net/tcp/tcp_recvwindow.c:
...
 73 uint16_t tcp_get_recvwindow(FAR struct net_driver_s *dev)
...
114   niob_avail    = iob_navail(true);

Change-Id: I230927904d8db08ed8d95d7fa18c5c5fce08aa5e
Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2020-11-26 18:06:13 +08:00 committed by Xiang Xiao
parent c8ff295d59
commit 234d3df19f
1 changed files with 0 additions and 18 deletions
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18
net/tcp/tcp_recvwindow.c
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@ -115,24 +115,6 @@ uint16_t tcp_get_recvwindow(FAR struct net_driver_s *dev,
niob_avail = iob_navail(true);
nqentry_avail = iob_qentry_navail();
/* Are the read-ahead allocations throttled? If so, then not all of these
* IOBs are available for read-ahead buffering.
*
* REVISIT: Should also check that there is at least one available IOB
* chain.
*/
#if CONFIG_IOB_THROTTLE > 0
if (niob_avail > CONFIG_IOB_THROTTLE)
{
niob_avail -= CONFIG_IOB_THROTTLE;
}
else
{
niob_avail = 0;
}
#endif
/* Is there a a queue entry and IOBs available for read-ahead buffering? */
if (nqentry_avail > 0 && niob_avail > 0)