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 --- net/tcp.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/tcp.c b/net/tcp.c index 2a95c44b141..b950d2b7727 100644 --- a/net/tcp.c +++ b/net/tcp.c @@ -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