PERFORCE change 193792 for review

[Kazuya Goda]

http://p4web.freebsd.org/@@193792?ac=10

Change 193792 by goda at hassaku on 2011/05/27 12:39:23

	Implements RPS.

Affected files ...

.. //depot/projects/soc2011/kgoda_rpsrfs/src/sys/amd64/conf/RPS#1 add
.. //depot/projects/soc2011/kgoda_rpsrfs/src/sys/conf/options#2 edit
.. //depot/projects/soc2011/kgoda_rpsrfs/src/sys/net/if_ethersubr.c#2 edit

Differences ...

==== //depot/projects/soc2011/kgoda_rpsrfs/src/sys/conf/options#2 (text+ko) ====

@@ -424,6 +424,7 @@
 RADIX_MPATH		opt_mpath.h
 ROUTETABLES		opt_route.h
 RSS			opt_rss.h
+RPS			opt_rps.h
 SLIP_IFF_OPTS		opt_slip.h
 TCPDEBUG
 TCP_OFFLOAD_DISABLE	opt_inet.h #Disable code to dispatch tcp offloading

==== //depot/projects/soc2011/kgoda_rpsrfs/src/sys/net/if_ethersubr.c#2 (text+ko) ====

@@ -30,6 +30,7 @@
  * $FreeBSD: src/sys/net/if_ethersubr.c,v 1.282 2010/11/22 19:32:54 dim Exp $
  */
 
+
 #include "opt_atalk.h"
 #include "opt_inet.h"
 #include "opt_inet6.h"
@@ -37,6 +38,7 @@
 #include "opt_netgraph.h"
 #include "opt_mbuf_profiling.h"
 #include "opt_rss.h"
+#include "opt_rps.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -71,9 +73,12 @@
 #include <netinet/in_var.h>
 #include <netinet/if_ether.h>
 #include <netinet/in_rss.h>
+#include <netinet/ip.h>
 #include <netinet/ip_carp.h>
 #include <netinet/ip_var.h>
 #include <netinet/ip_fw.h>
+#include <netinet/tcp.h>
+
 #include <netinet/ipfw/ip_fw_private.h>
 #endif
 #ifdef INET6
@@ -902,6 +907,28 @@
 	case ETHERTYPE_IP:
 		if ((m = ip_fastforward(m)) == NULL)
 			return;
+
+#ifdef RPS
+		{		
+			struct ip *ip = NULL;
+			struct tcphdr *th = NULL;
+
+			if ( m->m_flags & M_FLOWID )
+				goto not_rps;
+
+			ip = mtod(m, struct ip *);
+			if( ip->ip_p != IPPROTO_TCP )
+				goto not_rps;
+
+			th = (struct tcphdr *)((caddr_t)ip + ( ip->ip_hl << 2 ) );
+
+			m->m_flags |= M_FLOWID;
+			m->m_pkthdr.flowid = rss_hash_ip4_4tuple(ip->ip_src, th->th_sport, ip->ip_dst, th->th_dport);
+
+		}
+
+not_rps:
+#endif
 		isr = NETISR_IP;
 		break;