From 8b8aa4b5a66ecf90f0a7033c8cbc49cfd97c4347 Mon Sep 17 00:00:00 2001
From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Sun, 20 Nov 2005 12:18:17 +0900
Subject: [IPV6]: Fix memory management error during setting up new advapi
 sockopts.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 9225495..748577b 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -628,6 +628,7 @@ ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
 	if (!tot_len)
 		return NULL;
 
+	tot_len += sizeof(*opt2);
 	opt2 = sock_kmalloc(sk, tot_len, GFP_ATOMIC);
 	if (!opt2)
 		return ERR_PTR(-ENOBUFS);
@@ -668,7 +669,7 @@ ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
 
 	return opt2;
 out:
-	sock_kfree_s(sk, p, tot_len);
+	sock_kfree_s(sk, opt2, opt2->tot_len);
 	return ERR_PTR(err);
 }
 
-- 
cgit v0.10.2


From a305989386e402f48b216786a5c8cf440b33bdad Mon Sep 17 00:00:00 2001
From: Ville Nuorvala <vnuorval@tcs.hut.fi>
Date: Sun, 20 Nov 2005 12:21:59 +0900
Subject: [IPV6]: Fix calculation of AH length during filling ancillary data.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index cc51840..c4a3a99 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -437,7 +437,7 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
 				break;
 			case IPPROTO_AH:
 				nexthdr = ptr[0];
-				len = (ptr[1] + 1) << 2;
+				len = (ptr[1] + 2) << 2;
 				break;
 			default:
 				nexthdr = ptr[0];
-- 
cgit v0.10.2


From df9890c31a1a447254f39e40c3fd81ad6547945b Mon Sep 17 00:00:00 2001
From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Sun, 20 Nov 2005 12:23:18 +0900
Subject: [IPV6]: Fix sending extension headers before and including routing
 header.

Based on suggestion from Masahide Nakamura <nakam@linux-ipv6.org>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 65ec866..53c76c8 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -237,6 +237,8 @@ extern struct ipv6_txoptions *	ipv6_renew_options(struct sock *sk, struct ipv6_t
 						   int newtype,
 						   struct ipv6_opt_hdr __user *newopt,
 						   int newoptlen);
+struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
+					  struct ipv6_txoptions *opt);
 
 extern int ip6_frag_nqueues;
 extern atomic_t ip6_frag_mem;
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 748577b..be6faf3 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -673,3 +673,22 @@ out:
 	return ERR_PTR(err);
 }
 
+struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
+					  struct ipv6_txoptions *opt)
+{
+	/*
+	 * ignore the dest before srcrt unless srcrt is being included.
+	 * --yoshfuji
+	 */
+	if (opt && opt->dst0opt && !opt->srcrt) {
+		if (opt_space != opt) {
+			memcpy(opt_space, opt, sizeof(*opt_space));
+			opt = opt_space;
+		}
+		opt->opt_nflen -= ipv6_optlen(opt->dst0opt);
+		opt->dst0opt = NULL;
+	}
+
+	return opt;
+}
+
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index bbbe80c..1cf0276 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -225,20 +225,16 @@ struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
 					 struct ip6_flowlabel * fl,
 					 struct ipv6_txoptions * fopt)
 {
-	struct ipv6_txoptions * fl_opt = fl ? fl->opt : NULL;
-
-	if (fopt == NULL || fopt->opt_flen == 0) {
-		if (!fl_opt || !fl_opt->dst0opt || fl_opt->srcrt)
-			return fl_opt;
-	}
-
+	struct ipv6_txoptions * fl_opt = fl->opt;
+	
+	if (fopt == NULL || fopt->opt_flen == 0)
+		return fl_opt;
+	
 	if (fl_opt != NULL) {
 		opt_space->hopopt = fl_opt->hopopt;
-		opt_space->dst0opt = fl_opt->srcrt ? fl_opt->dst0opt : NULL;
+		opt_space->dst0opt = fl_opt->dst0opt;
 		opt_space->srcrt = fl_opt->srcrt;
 		opt_space->opt_nflen = fl_opt->opt_nflen;
-		if (fl_opt->dst0opt && !fl_opt->srcrt)
-			opt_space->opt_nflen -= ipv6_optlen(fl_opt->dst0opt);
 	} else {
 		if (fopt->opt_nflen == 0)
 			return fopt;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index a1265a3..d77d335 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -756,7 +756,9 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
 	}
 	if (opt == NULL)
 		opt = np->opt;
-	opt = fl6_merge_options(&opt_space, flowlabel, opt);
+	if (flowlabel)
+		opt = fl6_merge_options(&opt_space, flowlabel, opt);
+	opt = ipv6_fixup_options(&opt_space, opt);
 
 	fl.proto = proto;
 	rawv6_probe_proto_opt(&fl, msg);
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index bf95193..e2b87cc 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -778,7 +778,9 @@ do_udp_sendmsg:
 	}
 	if (opt == NULL)
 		opt = np->opt;
-	opt = fl6_merge_options(&opt_space, flowlabel, opt);
+	if (flowlabel)
+		opt = fl6_merge_options(&opt_space, flowlabel, opt);
+	opt = ipv6_fixup_options(&opt_space, opt);
 
 	fl->proto = IPPROTO_UDP;
 	ipv6_addr_copy(&fl->fl6_dst, daddr);
-- 
cgit v0.10.2