Hi All, I plan to change tcp code in the kernel(2.6.13.2) to include a custom algorithm for congestion control. My work is an extension to the Reno algorithm. So, I dont want to use any of the sack, fack, or dsacks. 1. Will disabling the parameters in /proc/sys/net/ipv4 directory would suffice? 2. In addition, I have disabled the sack( and other) options during the initialization in the file "tcp_input.c". I ran ssh between two machines and found during connection set up that these options are disabled. Do I have to take any other actions? 3. Also, in the same file, I found the comment "emulate sack for sackless connection" at the function tcp_add_reno_sack(). Does that mean that even after disabling sack, the estimate about sacked packets would be made? Thanks in advance. regards, dileep __________________________________________________________ Yahoo! India Matrimony: Find your partner now. Go to http://yahoo.shaadi.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html