xiaoxiang781216 commented on code in PR #7914:
URL: https://github.com/apache/nuttx/pull/7914#discussion_r1051600356
##########
net/tcp/tcp_recvwindow.c:
##########
@@ -163,7 +165,29 @@ uint32_t tcp_get_recvwindow(FAR struct net_driver_s *dev,
tailroom = 0;
}
+ /* Get the number of buffers that the NIC needs to reserved */
+
+ niob_reserved = 0;
+ iob = dev->d_iob;
+
+ while (iob != NULL)
+ {
+ niob_reserved++;
+ iob = iob->io_flink;
+ }
+
+ niob_reserved = ((NETDEV_PKTSIZE(dev) + (CONFIG_IOB_BUFSIZE - 1)) /
Review Comment:
why need adjust niob_reserved
##########
net/tcp/tcp_recvwindow.c:
##########
@@ -163,7 +165,29 @@ uint32_t tcp_get_recvwindow(FAR struct net_driver_s *dev,
tailroom = 0;
}
+ /* Get the number of buffers that the NIC needs to reserved */
+
+ niob_reserved = 0;
+ iob = dev->d_iob;
+
+ while (iob != NULL)
Review Comment:
should we add iob function for counting?
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