2008/9/20 zhenfeng ren <[EMAIL PROTECTED]>: > 2008/9/20 Nick Thomas <[EMAIL PROTECTED]>: >> >> Hi, >> >> I know this isn't much to go on, but I think I am getting TCP checksum >> errors. >> >> I am using an ST7101 chip, running OS21. >> >> I have got much of the LWIP stack running, DHCP works and DNS resolution is >> fine (I think both of these use UDP). >> >> But, the httpd example is giving wireshark some TCP Checksum errors, and the >> PC based browsers doesn't get the response from the HTTP GET request. >> >> Now, because anything using the UDP half of the transport layer seems fine, >> I am assuming that I have a problem somewhere in the TCP half, specifically >> in the checksum calcs. >> >> I have read elsewhere on these lists that there may be some hardware level >> checksum calcs happening, I need to read my docs to see if that is being >> enabled on my chip. > I think that there is some hardware level checksum calcs on Sti7109. Sorry!! there is NO some hardware level checksum calcs on Sti7109
> If you use the STMAC > on it . Checksum must be cal by CPU. > Why not use the gdb to see what happens in LwIP? >> Do the above sound like reasonable assumptions? >> >> >> >> Help/comments/advice appreciated. >> >> Regards >> >> Nick >> >> ----------------------------- >> Nick Thomas >> Email: [EMAIL PROTECTED] >> >> >> >> _______________________________________________ >> lwip-users mailing list >> [email protected] >> http://lists.nongnu.org/mailman/listinfo/lwip-users >> > _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
