1 files changed, 103 insertions, 0 deletions
diff --git a/sys/netinet6/in6_pcbgroup.c b/sys/netinet6/in6_pcbgroup.c
new file mode 100644
index 0000000..850d7f4
--- /dev/null
+++ b/sys/netinet6/in6_pcbgroup.c
@@ -0,0 +1,103 @@
+/*-
+ * Copyright (c) 2010-2011 Juniper Networks, Inc.
+ * All rights reserved.
+ *
+ * This software was developed by Robert N. M. Watson under contract
+ * to Juniper Networks, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+__FBSDID("$FreeBSD$");
+
+#include "opt_inet6.h"
+
+#include <sys/param.h>
+#include <sys/mbuf.h>
+
+#include <netinet/in.h>
+#include <netinet/in_pcb.h>
+#ifdef INET6
+#include <netinet6/in6_pcb.h>
+#endif /* INET6 */
+
+/*
+ * Given a hash of whatever the covered tuple might be, return a pcbgroup
+ * index.
+ */
+static __inline u_int
+in6_pcbgroup_getbucket(struct inpcbinfo *pcbinfo, uint32_t hash)
+{
+
+	return (hash % pcbinfo->ipi_npcbgroups);
+}
+
+/*
+ * Map a (hashtype, hash) tuple into a connection group, or NULL if the hash 
+ * information is insufficient to identify the pcbgroup.
+ */
+struct inpcbgroup *
+in6_pcbgroup_byhash(struct inpcbinfo *pcbinfo, u_int hashtype, uint32_t hash)
+{
+
+	return (NULL);
+}
+
+struct inpcbgroup *
+in6_pcbgroup_bymbuf(struct inpcbinfo *pcbinfo, struct mbuf *m)
+{
+
+	return (in6_pcbgroup_byhash(pcbinfo, M_HASHTYPE_GET(m),
+	    m->m_pkthdr.flowid));
+}
+
+struct inpcbgroup *
+in6_pcbgroup_bytuple(struct inpcbinfo *pcbinfo, const struct in6_addr *laddrp,
+    u_short lport, const struct in6_addr *faddrp, u_short fport)
+{
+	uint32_t hash;
+
+	switch (pcbinfo->ipi_hashfields) {
+	case IPI_HASHFIELDS_4TUPLE:
+		hash = faddrp->s6_addr32[3] ^ fport;
+		break;
+
+	case IPI_HASHFIELDS_2TUPLE:
+		hash = faddrp->s6_addr32[3] ^ laddrp->s6_addr32[3];
+		break;
+
+	default:
+		hash = 0;
+	}
+	return (&pcbinfo->ipi_pcbgroups[in6_pcbgroup_getbucket(pcbinfo,
+	    hash)]);
+}
+
+struct inpcbgroup *
+in6_pcbgroup_byinpcb(struct inpcb *inp)
+{
+
+	return (in6_pcbgroup_bytuple(inp->inp_pcbinfo, &inp->in6p_laddr,
+	    inp->inp_lport, &inp->in6p_faddr, inp->inp_fport));
+}