--- Nick Patavalis <npat@inaccessnetworks.com> wrote: > What I'm not sure about is whether the kernel or the > hardware does the > IP-header checksum calculation The kernel calculate IP-header checksum in both Rx and Tx path. In kernel 2.4.22, Rx path, ip_rcv() calls ip_fast_csum() to calculate and verify IP header checksum (ip_input.c, line 418); Tx path, ip_queue_xmit2() calls ip_send_check(iph) to add IP header checksum (ip_output.c, line 317). In kernel 2.6.0-test2 Rx path, ip_rcv() calls ip_fast_csum() to calculate and verify IP header checksum (ip_input.c, line 404); Tx path, ip_queue_xmit() calls ip_send_check(iph) to add IP header checksum (ip_output.c, line 383). Bluesea __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
