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net/tcp: define a fallback value for rcv_wnd size

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Some driver implements it's own network packet pool, so PKTBUFSRX is zero.
This results in zero-size TCP receive window, so data transfer doesn't
work. Avoid it by setting a reasonable fallback value.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Mikhail Kshevetskiy 2024-12-28 13:46:36 +03:00 • committed by Tom Rini
parent 3a44b8ba94
commit 0eff920826
1 changed files with 5 additions and 1 deletions
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6
net/tcp.c
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@ -36,7 +36,11 @@
#define TCP_SEND_RETRY 3
#define TCP_SEND_TIMEOUT 2000UL
#define TCP_RX_INACTIVE_TIMEOUT 30000UL
#define TCP_RCV_WND_SIZE (PKTBUFSRX * TCP_MSS)
#if PKTBUFSRX != 0
#define TCP_RCV_WND_SIZE (PKTBUFSRX * TCP_MSS)
#else
#define TCP_RCV_WND_SIZE (4 * TCP_MSS)
#endif
#define TCP_PACKET_OK 0
#define TCP_PACKET_DROP 1