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Date:      Sun, 6 Sep 2015 20:57:58 +0000 (UTC)
From:      Adrian Chadd <adrian@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r287525 - head/sys/netinet6
Message-ID:  <201509062057.t86KvwYT042745@repo.freebsd.org>
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Author: adrian
Date: Sun Sep  6 20:57:57 2015
New Revision: 287525
URL: https://svnweb.freebsd.org/changeset/base/287525

Log:
  Add support for receiving flowtype, flowid and RSS bucket information as part of recvmsg().
  
  Submitted by:	Tiwei Bie <btw@mail.ustc.edu.cn>
  Differential Revision:	https://reviews.freebsd.org/D3562

Modified:
  head/sys/netinet6/in6.h
  head/sys/netinet6/ip6_input.c
  head/sys/netinet6/ip6_output.c

Modified: head/sys/netinet6/in6.h
==============================================================================
--- head/sys/netinet6/in6.h	Sun Sep  6 20:20:48 2015	(r287524)
+++ head/sys/netinet6/in6.h	Sun Sep  6 20:57:57 2015	(r287525)
@@ -485,6 +485,8 @@ struct route_in6 {
 #define	IPV6_FLOWID		67 /* int; flowid of given socket */
 #define	IPV6_FLOWTYPE		68 /* int; flowtype of given socket */
 #define	IPV6_RSSBUCKETID	69 /* int; RSS bucket ID of given socket */
+#define	IPV6_RECVFLOWID		70 /* bool; receive IP6 flowid/flowtype w/ datagram */
+#define	IPV6_RECVRSSBUCKETID	71 /* bool; receive IP6 RSS bucket id w/ datagram */
 
 /*
  * The following option is private; do not use it from user applications.

Modified: head/sys/netinet6/ip6_input.c
==============================================================================
--- head/sys/netinet6/ip6_input.c	Sun Sep  6 20:20:48 2015	(r287524)
+++ head/sys/netinet6/ip6_input.c	Sun Sep  6 20:57:57 2015	(r287525)
@@ -93,6 +93,7 @@ __FBSDID("$FreeBSD$");
 #include <net/if_dl.h>
 #include <net/route.h>
 #include <net/netisr.h>
+#include <net/rss_config.h>
 #include <net/pfil.h>
 #include <net/vnet.h>
 
@@ -1349,6 +1350,44 @@ ip6_savecontrol(struct inpcb *in6p, stru
 	  loopend:
 		;
 	}
+
+	if (in6p->inp_flags2 & INP_RECVFLOWID) {
+		uint32_t flowid, flow_type;
+
+		flowid = m->m_pkthdr.flowid;
+		flow_type = M_HASHTYPE_GET(m);
+
+		/*
+		 * XXX should handle the failure of one or the
+		 * other - don't populate both?
+		 */
+		*mp = sbcreatecontrol((caddr_t) &flowid,
+		    sizeof(uint32_t), IPV6_FLOWID, IPPROTO_IPV6);
+		if (*mp)
+			mp = &(*mp)->m_next;
+		*mp = sbcreatecontrol((caddr_t) &flow_type,
+		    sizeof(uint32_t), IPV6_FLOWTYPE, IPPROTO_IPV6);
+		if (*mp)
+			mp = &(*mp)->m_next;
+	}
+
+#ifdef	RSS
+	if (in6p->inp_flags2 & INP_RECVRSSBUCKETID) {
+		uint32_t flowid, flow_type;
+		uint32_t rss_bucketid;
+
+		flowid = m->m_pkthdr.flowid;
+		flow_type = M_HASHTYPE_GET(m);
+
+		if (rss_hash2bucket(flowid, flow_type, &rss_bucketid) == 0) {
+			*mp = sbcreatecontrol((caddr_t) &rss_bucketid,
+			   sizeof(uint32_t), IPV6_RSSBUCKETID, IPPROTO_IPV6);
+			if (*mp)
+				mp = &(*mp)->m_next;
+		}
+	}
+#endif
+
 }
 #undef IS2292
 

Modified: head/sys/netinet6/ip6_output.c
==============================================================================
--- head/sys/netinet6/ip6_output.c	Sun Sep  6 20:20:48 2015	(r287524)
+++ head/sys/netinet6/ip6_output.c	Sun Sep  6 20:57:57 2015	(r287525)
@@ -1400,6 +1400,10 @@ ip6_ctloutput(struct socket *so, struct 
 			case IPV6_RECVRTHDR:
 			case IPV6_RECVPATHMTU:
 			case IPV6_RECVTCLASS:
+			case IPV6_RECVFLOWID:
+#ifdef	RSS
+			case IPV6_RECVRSSBUCKETID:
+#endif
 			case IPV6_V6ONLY:
 			case IPV6_AUTOFLOWLABEL:
 			case IPV6_BINDANY:
@@ -1548,6 +1552,16 @@ do { \
 						OPTSET(IN6P_MTU);
 					break;
 
+				case IPV6_RECVFLOWID:
+					OPTSET2(INP_RECVFLOWID, optval);
+					break;
+
+#ifdef	RSS
+				case IPV6_RECVRSSBUCKETID:
+					OPTSET2(INP_RECVRSSBUCKETID, optval);
+					break;
+#endif
+
 				case IPV6_V6ONLY:
 					/*
 					 * make setsockopt(IPV6_V6ONLY)
@@ -1811,8 +1825,10 @@ do { \
 			case IPV6_BINDANY:
 			case IPV6_FLOWID:
 			case IPV6_FLOWTYPE:
+			case IPV6_RECVFLOWID:
 #ifdef	RSS
 			case IPV6_RSSBUCKETID:
+			case IPV6_RECVRSSBUCKETID:
 #endif
 				switch (optname) {
 
@@ -1883,6 +1899,10 @@ do { \
 				case IPV6_FLOWTYPE:
 					optval = in6p->inp_flowtype;
 					break;
+
+				case IPV6_RECVFLOWID:
+					optval = OPTBIT2(INP_RECVFLOWID);
+					break;
 #ifdef	RSS
 				case IPV6_RSSBUCKETID:
 					retval =
@@ -1894,6 +1914,10 @@ do { \
 					else
 						error = EINVAL;
 					break;
+
+				case IPV6_RECVRSSBUCKETID:
+					optval = OPTBIT2(INP_RECVRSSBUCKETID);
+					break;
 #endif
 
 				case IPV6_BINDMULTI:

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