I forgot to mention that I use Xilinx lwIP example applications (XAPP
1026). Basically the only thing I have changed is in their
TCP server app, instead of only receiving data, I made server only
to send data (literally, instead of lwip_recv, I put lwip_send).
Also, I don't know whether this means anything, but bug
reproduction is kinda interesting. I am always able to bring up
TCP client several consecutive times and successfully exchange
data (ip_frag never gets called during the exchange) and close TCP
client. Then I don't do anything for about 5-10 minutes. Then I
bring up TCP client again, and TCP server get stuck in ip_frag()
when start sending data.
On 6.3.2017 10:57, pekez wrote:
1) netif->mtu = XEMACPS_MTU - XEMACPS_HDR_SIZE;
#define XEMACPS_MTU 1500U /* max MTU size of
Ethernet frame */
#define XEMACPS_HDR_SIZE 14U /* size of Ethernet header
*/
2) how can I check exact length of pbufs?
3) Yep, IP_FRAG_USES_STATIC_BUF and LWIP_NETIF_TX_SINGLE_PBUF are
both 0.
Thanks!
On 6.3.2017 10:51, Simon Goldschmidt wrote:
pekez wrote:
Anyone? Not a single person can tell me
something about this problem?
Does not seem so.
Could you give us more info:
- what is netif->mtu set to
- exact length of pbufs in a chaing > 1480
- setting of IP_FRAG_USES_STATIC_BUF and
LWIP_NETIF_TX_SINGLE_PBUF (I assume both are 0 - default)
That way I could try to have a quick look.
Simon
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