From 377b89c55f75aba70c2c66bfc96fb4c4af7311ae Mon Sep 17 00:00:00 2001
From: hrs <hrs@FreeBSD.org>
Date: Wed, 5 Dec 2012 19:45:24 +0000
Subject: - Move definition of V_deembed_scopeid to scope6_var.h. - Deembed
 scope id in L3 address in in6_lltable_dump(). - Simplify scope id recovery in
 rtsock routines. - Remove embedded scope id handling in ndp(8) and route(8)
 completely.

---
 sys/netinet6/in6.c        | 2 ++
 sys/netinet6/scope6.c     | 9 +++++++++
 sys/netinet6/scope6_var.h | 5 +++++
 3 files changed, 16 insertions(+)

(limited to 'sys/netinet6')

diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c
index 63b64ee..8da46cf 100644
--- a/sys/netinet6/in6.c
+++ b/sys/netinet6/in6.c
@@ -2669,6 +2669,8 @@ in6_lltable_dump(struct lltable *llt, struct sysctl_req *wr)
 			ndpc.sin6.sin6_family = AF_INET6;
 			ndpc.sin6.sin6_len = sizeof(ndpc.sin6);
 			bcopy(L3_ADDR(lle), &ndpc.sin6, L3_ADDR_LEN(lle));
+			if (V_deembed_scopeid)
+				sa6_recoverscope(&ndpc.sin6);
 
 			/* publish */
 			if (lle->la_flags & LLE_PUB)
diff --git a/sys/netinet6/scope6.c b/sys/netinet6/scope6.c
index edfb1e6..060fe59 100644
--- a/sys/netinet6/scope6.c
+++ b/sys/netinet6/scope6.c
@@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/socket.h>
 #include <sys/systm.h>
 #include <sys/queue.h>
+#include <sys/sysctl.h>
 #include <sys/syslog.h>
 
 #include <net/if.h>
@@ -55,6 +56,11 @@ VNET_DEFINE(int, ip6_use_defzone) = 1;
 #else
 VNET_DEFINE(int, ip6_use_defzone) = 0;
 #endif
+VNET_DEFINE(int, deembed_scopeid) = 1;
+SYSCTL_DECL(_net_inet6_ip6);
+SYSCTL_VNET_INT(_net_inet6_ip6, OID_AUTO, deembed_scopeid, CTLFLAG_RW,
+    &VNET_NAME(deembed_scopeid), 0,
+    "Extract embedded zone ID and set it to sin6_scope_id in sockaddr_in6.");
 
 /*
  * The scope6_lock protects the global sid default stored in
@@ -379,8 +385,11 @@ sa6_recoverscope(struct sockaddr_in6 *sin6)
 			/* sanity check */
 			if (V_if_index < zoneid)
 				return (ENXIO);
+#if 0
+			/* XXX: Disabled due to possible deadlock. */
 			if (!ifnet_byindex(zoneid))
 				return (ENXIO);
+#endif
 			if (sin6->sin6_scope_id != 0 &&
 			    zoneid != sin6->sin6_scope_id) {
 				log(LOG_NOTICE,
diff --git a/sys/netinet6/scope6_var.h b/sys/netinet6/scope6_var.h
index ae337b8..87de8d7 100644
--- a/sys/netinet6/scope6_var.h
+++ b/sys/netinet6/scope6_var.h
@@ -34,6 +34,8 @@
 #define _NETINET6_SCOPE6_VAR_H_
 
 #ifdef _KERNEL
+#include <net/vnet.h>
+
 struct scope6_id {
 	/*
 	 * 16 is correspondent to 4bit multicast scope field.
@@ -42,6 +44,9 @@ struct scope6_id {
 	u_int32_t s6id_list[16];
 };
 
+VNET_DECLARE(int, deembed_scopeid);
+#define V_deembed_scopeid       VNET(deembed_scopeid)
+
 void	scope6_init(void);
 struct scope6_id *scope6_ifattach(struct ifnet *);
 void	scope6_ifdetach(struct scope6_id *);
-- 
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