X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv6%2Freassembly.c;h=7b247e3a16fe4873feee9e3e903f835d54a61a70;hb=5b3f129c5592ca35b3fe8916767c58b98710478c;hp=241b2cc49bf51e2ef8a65baf344ba23e65b16492;hpb=6ddc082223ef0f73717b4133fa7e648842bbfd02;p=linux-2.6-omap-h63xx.git

diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 241b2cc49bf..7b247e3a16f 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -202,7 +202,7 @@ static void ip6_frag_expire(unsigned long data)
 
 	spin_lock(&fq->q.lock);
 
-	if (fq->q.last_in & COMPLETE)
+	if (fq->q.last_in & INET_FRAG_COMPLETE)
 		goto out;
 
 	fq_kill(fq);
@@ -217,7 +217,7 @@ static void ip6_frag_expire(unsigned long data)
 	rcu_read_unlock();
 
 	/* Don't send error if the first segment did not arrive. */
-	if (!(fq->q.last_in&FIRST_IN) || !fq->q.fragments)
+	if (!(fq->q.last_in & INET_FRAG_FIRST_IN) || !fq->q.fragments)
 		goto out;
 
 	/*
@@ -265,7 +265,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
 	struct net_device *dev;
 	int offset, end;
 
-	if (fq->q.last_in & COMPLETE)
+	if (fq->q.last_in & INET_FRAG_COMPLETE)
 		goto err;
 
 	offset = ntohs(fhdr->frag_off) & ~0x7;
@@ -294,9 +294,9 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
 		 * or have different end, the segment is corrupted.
 		 */
 		if (end < fq->q.len ||
-		    ((fq->q.last_in & LAST_IN) && end != fq->q.len))
+		    ((fq->q.last_in & INET_FRAG_LAST_IN) && end != fq->q.len))
 			goto err;
-		fq->q.last_in |= LAST_IN;
+		fq->q.last_in |= INET_FRAG_LAST_IN;
 		fq->q.len = end;
 	} else {
 		/* Check if the fragment is rounded to 8 bytes.
@@ -314,7 +314,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
 		}
 		if (end > fq->q.len) {
 			/* Some bits beyond end -> corruption. */
-			if (fq->q.last_in & LAST_IN)
+			if (fq->q.last_in & INET_FRAG_LAST_IN)
 				goto err;
 			fq->q.len = end;
 		}
@@ -417,14 +417,15 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
 	 */
 	if (offset == 0) {
 		fq->nhoffset = nhoff;
-		fq->q.last_in |= FIRST_IN;
+		fq->q.last_in |= INET_FRAG_FIRST_IN;
 	}
 
-	if (fq->q.last_in == (FIRST_IN | LAST_IN) && fq->q.meat == fq->q.len)
+	if (fq->q.last_in == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) &&
+	    fq->q.meat == fq->q.len)
 		return ip6_frag_reasm(fq, prev, dev);
 
 	write_lock(&ip6_frags.lock);
-	list_move_tail(&fq->q.lru_list, &ip6_frags.lru_list);
+	list_move_tail(&fq->q.lru_list, &fq->q.net->lru_list);
 	write_unlock(&ip6_frags.lock);
 	return -1;
 
@@ -600,9 +601,8 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
 		return 1;
 	}
 
-	net = skb->dev->nd_net;
-	if (atomic_read(&net->ipv6.frags.mem) >
-			init_net.ipv6.sysctl.frags.high_thresh)
+	net = dev_net(skb->dev);
+	if (atomic_read(&net->ipv6.frags.mem) > net->ipv6.frags.high_thresh)
 		ip6_evictor(net, ip6_dst_idev(skb->dst));
 
 	if ((fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr,
@@ -634,7 +634,7 @@ static struct ctl_table ip6_frags_ctl_table[] = {
 	{
 		.ctl_name	= NET_IPV6_IP6FRAG_HIGH_THRESH,
 		.procname	= "ip6frag_high_thresh",
-		.data		= &init_net.ipv6.sysctl.frags.high_thresh,
+		.data		= &init_net.ipv6.frags.high_thresh,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec
@@ -642,7 +642,7 @@ static struct ctl_table ip6_frags_ctl_table[] = {
 	{
 		.ctl_name	= NET_IPV6_IP6FRAG_LOW_THRESH,
 		.procname	= "ip6frag_low_thresh",
-		.data		= &init_net.ipv6.sysctl.frags.low_thresh,
+		.data		= &init_net.ipv6.frags.low_thresh,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec
@@ -650,7 +650,7 @@ static struct ctl_table ip6_frags_ctl_table[] = {
 	{
 		.ctl_name	= NET_IPV6_IP6FRAG_TIME,
 		.procname	= "ip6frag_time",
-		.data		= &init_net.ipv6.sysctl.frags.timeout,
+		.data		= &init_net.ipv6.frags.timeout,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_jiffies,
@@ -659,7 +659,7 @@ static struct ctl_table ip6_frags_ctl_table[] = {
 	{
 		.ctl_name	= NET_IPV6_IP6FRAG_SECRET_INTERVAL,
 		.procname	= "ip6frag_secret_interval",
-		.data		= &init_net.ipv6.sysctl.frags.secret_interval,
+		.data		= &ip6_frags.secret_interval,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_jiffies,
@@ -670,33 +670,76 @@ static struct ctl_table ip6_frags_ctl_table[] = {
 
 static int ip6_frags_sysctl_register(struct net *net)
 {
+	struct ctl_table *table;
 	struct ctl_table_header *hdr;
 
-	hdr = register_net_sysctl_table(net, net_ipv6_ctl_path,
-			ip6_frags_ctl_table);
-	return hdr == NULL ? -ENOMEM : 0;
+	table = ip6_frags_ctl_table;
+	if (net != &init_net) {
+		table = kmemdup(table, sizeof(ip6_frags_ctl_table), GFP_KERNEL);
+		if (table == NULL)
+			goto err_alloc;
+
+		table[0].data = &net->ipv6.frags.high_thresh;
+		table[1].data = &net->ipv6.frags.low_thresh;
+		table[2].data = &net->ipv6.frags.timeout;
+		table[3].mode &= ~0222;
+	}
+
+	hdr = register_net_sysctl_table(net, net_ipv6_ctl_path, table);
+	if (hdr == NULL)
+		goto err_reg;
+
+	net->ipv6.sysctl.frags_hdr = hdr;
+	return 0;
+
+err_reg:
+	if (net != &init_net)
+		kfree(table);
+err_alloc:
+	return -ENOMEM;
+}
+
+static void ip6_frags_sysctl_unregister(struct net *net)
+{
+	struct ctl_table *table;
+
+	table = net->ipv6.sysctl.frags_hdr->ctl_table_arg;
+	unregister_net_sysctl_table(net->ipv6.sysctl.frags_hdr);
+	kfree(table);
 }
 #else
 static inline int ip6_frags_sysctl_register(struct net *net)
 {
 	return 0;
 }
+
+static inline void ip6_frags_sysctl_unregister(struct net *net)
+{
+}
 #endif
 
 static int ipv6_frags_init_net(struct net *net)
 {
-	ip6_frags.ctl = &net->ipv6.sysctl.frags;
-
-	net->ipv6.sysctl.frags.high_thresh = 256 * 1024;
-	net->ipv6.sysctl.frags.low_thresh = 192 * 1024;
-	net->ipv6.sysctl.frags.timeout = IPV6_FRAG_TIMEOUT;
-	net->ipv6.sysctl.frags.secret_interval = 10 * 60 * HZ;
+	net->ipv6.frags.high_thresh = 256 * 1024;
+	net->ipv6.frags.low_thresh = 192 * 1024;
+	net->ipv6.frags.timeout = IPV6_FRAG_TIMEOUT;
 
 	inet_frags_init_net(&net->ipv6.frags);
 
 	return ip6_frags_sysctl_register(net);
 }
 
+static void ipv6_frags_exit_net(struct net *net)
+{
+	ip6_frags_sysctl_unregister(net);
+	inet_frags_exit_net(&net->ipv6.frags, &ip6_frags);
+}
+
+static struct pernet_operations ip6_frags_ops = {
+	.init = ipv6_frags_init_net,
+	.exit = ipv6_frags_exit_net,
+};
+
 int __init ipv6_frag_init(void)
 {
 	int ret;
@@ -705,7 +748,7 @@ int __init ipv6_frag_init(void)
 	if (ret)
 		goto out;
 
-	ipv6_frags_init_net(&init_net);
+	register_pernet_subsys(&ip6_frags_ops);
 
 	ip6_frags.hashfn = ip6_hashfn;
 	ip6_frags.constructor = ip6_frag_init;
@@ -714,6 +757,7 @@ int __init ipv6_frag_init(void)
 	ip6_frags.qsize = sizeof(struct frag_queue);
 	ip6_frags.match = ip6_frag_match;
 	ip6_frags.frag_expire = ip6_frag_expire;
+	ip6_frags.secret_interval = 10 * 60 * HZ;
 	inet_frags_init(&ip6_frags);
 out:
 	return ret;
@@ -722,5 +766,6 @@ out:
 void ipv6_frag_exit(void)
 {
 	inet_frags_fini(&ip6_frags);
+	unregister_pernet_subsys(&ip6_frags_ops);
 	inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT);
 }