After reading this page: http://www.hut.fi/~msisomak/diffserv.html and http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc1349.html#sec-3 It appears that the IP TOS values in netinet/ip.h are incorrect: /* * Definitions for IP type of service (ip_tos) */ #define IPTOS_TOS_MASK 0x1E #define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK) #define IPTOS_LOWDELAY 0x10 #define IPTOS_THROUGHPUT 0x08 #define IPTOS_RELIABILITY 0x04 #define IPTOS_LOWCOST 0x02 #define IPTOS_MINCOST IPTOS_LOWCOST I think each value should be left-shifed two times to make room for the 3 precedence bits. Am I missing something?? Also, will the kernel take any 8-bit value I try to stuff in there with: setsockopt(dev_socket, SOL_IP, IP_TOS, (char*)&val, sizeof(int)) or will it normalize values according to it's internal rules? Thanks, Ben -- Ben Greear <greearb@candelatech.com> <Ben_Greear@excite.com> President of Candela Technologies Inc http://www.candelatech.com ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear - : 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
