Author: adrian Date: Tue Sep 9 04:20:53 2014 New Revision: 271302 URL: http://svnweb.freebsd.org/changeset/base/271302
Log: Add basic RSS awareness for the UDPv6 send path. This doesn't include the same kind of userland overriding that the IPv4 path has; nor does it yet know about 2-tuple versus 4-tuple hashing. That'll come later. Differential Revision: https://reviews.freebsd.org/D527 Reviewed by: grehan Modified: head/sys/netinet6/udp6_usrreq.c Modified: head/sys/netinet6/udp6_usrreq.c ============================================================================== --- head/sys/netinet6/udp6_usrreq.c Tue Sep 9 04:19:36 2014 (r271301) +++ head/sys/netinet6/udp6_usrreq.c Tue Sep 9 04:20:53 2014 (r271302) @@ -74,6 +74,7 @@ __FBSDID("$FreeBSD$"); #include "opt_inet6.h" #include "opt_ipfw.h" #include "opt_ipsec.h" +#include "opt_rss.h" #include <sys/param.h> #include <sys/jail.h> @@ -111,6 +112,7 @@ __FBSDID("$FreeBSD$"); #include <netinet/udp.h> #include <netinet/udp_var.h> #include <netinet/udplite.h> +#include <netinet/in_rss.h> #include <netinet6/ip6protosw.h> #include <netinet6/ip6_var.h> @@ -850,8 +852,30 @@ udp6_output(struct inpcb *inp, struct mb m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); } + /* + * XXX for now assume UDP is 2-tuple. + * Later on this may become configurable as 4-tuple; + * we should support that. + * + * XXX .. and we should likely cache this in the inpcb. + */ +#ifdef RSS + m->m_pkthdr.flowid = rss_hash_ip6_2tuple(*faddr, *laddr); + m->m_flags |= M_FLOWID; + M_HASHTYPE_SET(m, M_HASHTYPE_RSS_IPV6); +#endif flags = 0; +#ifdef RSS + /* + * Don't override with the inp cached flowid. + * + * Until the whole UDP path is vetted, it may actually + * be incorrect. + */ + flags |= IP_NODEFAULTFLOWID; +#endif + UDP_PROBE(send, NULL, inp, ip6, inp, udp6); UDPSTAT_INC(udps_opackets); error = ip6_output(m, optp, NULL, flags, inp->in6p_moptions, _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
