Merge bk://kernel.bkbits.net/jmorris/net-2.5

into nuts.ninka.net:/home/davem/src/BK/net-2.5

include/net/addrconf.h

@@ -68,6 +68,8 @@ extern int			ipv6_dev_get_saddr(struct net_device *dev,
 					       struct in6_addr *saddr,
 					       int onlink);
 extern int			ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
+extern int			ipv6_rcv_saddr_equal(const struct sock *sk, 
+						      const struct sock *sk2);
 extern void			addrconf_join_solict(struct net_device *dev,
 					struct in6_addr *addr);
 extern void			addrconf_leave_solict(struct net_device *dev,

include/net/ip.h

@@ -79,8 +79,7 @@ extern rwlock_t ip_ra_lock;
 
 extern void		ip_mc_dropsocket(struct sock *);
 extern void		ip_mc_dropdevice(struct net_device *dev);
-extern int		ip_mc_procinfo(char *, char **, off_t, int);
-extern int		ip_mcf_procinfo(char *, char **, off_t, int);
+extern int		igmp_mc_proc_init(void);
 
 /*
  *	Functions provided by ip.c

net/ipv4/ip_output.c

@@ -1314,7 +1314,6 @@ void __init ip_init(void)
 	inet_initpeers();
 
 #ifdef CONFIG_IP_MULTICAST
-	proc_net_create("igmp", 0, ip_mc_procinfo);
+	igmp_mc_proc_init();
 #endif
-	proc_net_create("mcfilter", 0, ip_mcf_procinfo);
 }

net/ipv4/raw.c

@@ -801,7 +801,24 @@ static struct seq_operations raw_seq_ops = {
 
 static int raw_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &raw_seq_ops);
+	struct seq_file *seq;
+	int rc = -ENOMEM;
+	struct raw_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
+
+	if (!s)
+		goto out;
+	rc = seq_open(file, &raw_seq_ops);
+	if (rc)
+		goto out_kfree;
+
+	seq = file->private_data;
+	seq->private = s;
+	memset(s, 0, sizeof(*s));
+out:
+	return rc;
+out_kfree:
+	kfree(s);
+	goto out;
 }
 
 static struct file_operations raw_seq_fops = {
@@ -809,7 +826,7 @@ static struct file_operations raw_seq_fops = {
 	.open	 = raw_seq_open,
 	.read	 = seq_read,
 	.llseek	 = seq_lseek,
-	.release = seq_release,
+	.release = seq_release_private,
 };
 
 int __init raw_proc_init(void)

net/ipv6/addrconf.c

@@ -66,6 +66,7 @@
 #include <net/ndisc.h>
 #include <net/ip6_route.h>
 #include <net/addrconf.h>
+#include <net/tcp.h>
 #include <net/ip.h>
 #include <linux/if_tunnel.h>
 #include <linux/rtnetlink.h>
@@ -969,6 +970,43 @@ struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr, struct net_device *
 	return ifp;
 }
 
+int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
+{
+	struct ipv6_pinfo *np = inet6_sk(sk);
+	int addr_type = ipv6_addr_type(&np->rcv_saddr);
+
+	if (!inet_sk(sk2)->rcv_saddr && !ipv6_only_sock(sk))
+		return 1;
+
+	if (sk2->sk_family == AF_INET6 &&
+	    ipv6_addr_any(&inet6_sk(sk2)->rcv_saddr) &&
+	    !(ipv6_only_sock(sk2) && addr_type == IPV6_ADDR_MAPPED))
+		return 1;
+
+	if (addr_type == IPV6_ADDR_ANY &&
+	    (!ipv6_only_sock(sk) ||
+	     !(sk2->sk_family == AF_INET6 ?
+	       (ipv6_addr_type(&inet6_sk(sk2)->rcv_saddr) == IPV6_ADDR_MAPPED) :
+	        1)))
+		return 1;
+
+	if (sk2->sk_family == AF_INET6 &&
+	    !ipv6_addr_cmp(&np->rcv_saddr,
+			   (sk2->sk_state != TCP_TIME_WAIT ?
+			    &inet6_sk(sk2)->rcv_saddr :
+			    &tcptw_sk(sk)->tw_v6_rcv_saddr)))
+		return 1;
+
+	if (addr_type == IPV6_ADDR_MAPPED &&
+	    !ipv6_only_sock(sk2) &&
+	    (!inet_sk(sk2)->rcv_saddr ||
+	     !inet_sk(sk)->rcv_saddr ||
+	     inet_sk(sk)->rcv_saddr == inet_sk(sk2)->rcv_saddr))
+		return 1;
+
+	return 0;
+}
+
 /* Gets referenced address, destroys ifaddr */
 
 void addrconf_dad_failure(struct inet6_ifaddr *ifp)

net/ipv6/af_inet6.c

@@ -85,7 +85,8 @@ extern int udp6_proc_init(void);
 extern void udp6_proc_exit(void);
 extern int ipv6_misc_proc_init(void);
 extern void ipv6_misc_proc_exit(void);
-extern int anycast6_get_info(char *, char **, off_t, int);
+extern int ac6_proc_init(void);
+extern void ac6_proc_exit(void);
 extern int if6_proc_init(void);
 extern void if6_proc_exit(void);
 #endif
@@ -799,7 +800,7 @@ static int __init inet6_init(void)
 	if (ipv6_misc_proc_init())
 		goto proc_misc6_fail;
 
-	if (!proc_net_create("anycast6", 0, anycast6_get_info))
+	if (ac6_proc_init())
 		goto proc_anycast6_fail;
 	if (if6_proc_init())
 		goto proc_if6_fail;
@@ -825,7 +826,7 @@ static int __init inet6_init(void)
 
 #ifdef CONFIG_PROC_FS
 proc_if6_fail:
-	proc_net_remove("anycast6");
+	ac6_proc_exit();
 proc_anycast6_fail:
 	ipv6_misc_proc_exit();
 proc_misc6_fail:
@@ -863,7 +864,7 @@ static void inet6_exit(void)
 	sock_unregister(PF_INET6);
 #ifdef CONFIG_PROC_FS
 	if6_proc_exit();
- 	proc_net_remove("anycast6");
+	ac6_proc_exit();
  	ipv6_misc_proc_exit();
  	udp6_proc_exit();
  	tcp6_proc_exit();

net/ipv6/anycast.c

@@ -29,6 +29,7 @@
 #include <linux/route.h>
 #include <linux/init.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 
 #include <net/sock.h>
 #include <net/snmp.h>
@@ -435,56 +436,159 @@ int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr)
 
 
 #ifdef CONFIG_PROC_FS
-int anycast6_get_info(char *buffer, char **start, off_t offset, int length)
-{
-	off_t pos=0, begin=0;
-	struct ifacaddr6 *im;
-	int len=0;
+struct ac6_iter_state {
 	struct net_device *dev;
-	
-	read_lock(&dev_base_lock);
-	for (dev = dev_base; dev; dev = dev->next) {
-		struct inet6_dev *idev;
+	struct inet6_dev *idev;
+};
 
-		if ((idev = in6_dev_get(dev)) == NULL)
-			continue;
+#define ac6_seq_private(seq)	((struct ac6_iter_state *)&seq->private)
 
+static inline struct ifacaddr6 *ac6_get_first(struct seq_file *seq)
+{
+	struct ifacaddr6 *im = NULL;
+	struct ac6_iter_state *state = ac6_seq_private(seq);
+
+	for (state->dev = dev_base, state->idev = NULL;
+	     state->dev;
+	     state->dev = state->dev->next) {
+		struct inet6_dev *idev;
+		idev = in6_dev_get(state->dev);
+		if (!idev)
+			continue;
 		read_lock_bh(&idev->lock);
-		for (im = idev->ac_list; im; im = im->aca_next) {
-			int i;
-
-			len += sprintf(buffer+len,"%-4d %-15s ", dev->ifindex, dev->name);
-
-			for (i=0; i<16; i++)
-				len += sprintf(buffer+len, "%02x", im->aca_addr.s6_addr[i]);
-
-			len += sprintf(buffer+len, " %5d\n", im->aca_users);
-
-			pos=begin+len;
-			if (pos < offset) {
-				len=0;
-				begin=pos;
-			}
-			if (pos > offset+length) {
-				read_unlock_bh(&idev->lock);
-				in6_dev_put(idev);
-				goto done;
-			}
+		im = idev->ac_list;
+		if (im) {
+			state->idev = idev;
+			break;
 		}
 		read_unlock_bh(&idev->lock);
-		in6_dev_put(idev);
 	}
+	return im;
+}
+
+static struct ifacaddr6 *ac6_get_next(struct seq_file *seq, struct ifacaddr6 *im)
+{
+	struct ac6_iter_state *state = ac6_seq_private(seq);
+
+	im = im->aca_next;
+	while (!im) {
+		if (likely(state->idev != NULL)) {
+			read_unlock_bh(&state->idev->lock);
+			in6_dev_put(state->idev);
+		}
+		state->dev = state->dev->next;
+		if (!state->dev) {
+			state->idev = NULL;
+			break;
+		}
+		state->idev = in6_dev_get(state->dev);
+		if (!state->idev)
+			continue;
+		read_lock_bh(&state->idev->lock);
+		im = state->idev->ac_list;
+	}
+	return im;
+}
+
+static struct ifacaddr6 *ac6_get_idx(struct seq_file *seq, loff_t pos)
+{
+	struct ifacaddr6 *im = ac6_get_first(seq);
+	if (im)
+		while (pos && (im = ac6_get_next(seq, im)) != NULL)
+			--pos;
+	return pos ? NULL : im;
+}
 
-done:
+static void *ac6_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	read_lock(&dev_base_lock);
+	return *pos ? ac6_get_idx(seq, *pos) : ac6_get_first(seq);
+}
+
+static void *ac6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct ifacaddr6 *im;
+	im = ac6_get_next(seq, v);
+	++*pos;
+	return im;
+}
+
+static void ac6_seq_stop(struct seq_file *seq, void *v)
+{
+	struct ac6_iter_state *state = ac6_seq_private(seq);
+	if (likely(state->idev != NULL)) {
+		read_unlock_bh(&state->idev->lock);
+		in6_dev_put(state->idev);
+	}
 	read_unlock(&dev_base_lock);
+}
 
-	*start=buffer+(offset-begin);
-	len-=(offset-begin);
-	if(len>length)
-		len=length;
-	if (len<0)
-		len=0;
-	return len;
+static int ac6_seq_show(struct seq_file *seq, void *v)
+{
+	struct ifacaddr6 *im = (struct ifacaddr6 *)v;
+	struct ac6_iter_state *state = ac6_seq_private(seq);
+
+	seq_printf(seq,
+		   "%-4d %-15s "
+		   "%04x%04x%04x%04x%04x%04x%04x%04x "
+		   "%5d\n",
+		   state->dev->ifindex, state->dev->name,
+		   NIP6(im->aca_addr),
+		   im->aca_users);
+	return 0;
 }
 
+static struct seq_operations ac6_seq_ops = {
+	.start	=	ac6_seq_start,
+	.next	=	ac6_seq_next,
+	.stop	=	ac6_seq_stop,
+	.show	=	ac6_seq_show,
+};
+
+static int ac6_seq_open(struct inode *inode, struct file *file)
+{
+	struct seq_file *seq;
+	int rc = -ENOMEM;
+	struct ac6_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
+
+	if (!s)
+		goto out;
+
+	rc = seq_open(file, &ac6_seq_ops);
+	if (rc)
+		goto out_kfree;
+
+	seq = file->private_data;
+	seq->private = s;
+	memset(s, 0, sizeof(*s));
+out:
+	return rc;
+out_kfree:
+	kfree(s);
+	goto out;
+}
+
+static struct file_operations ac6_seq_fops = {
+	.owner		=	THIS_MODULE,
+	.open		=	ac6_seq_open,
+	.read		=	seq_read,
+	.llseek		=	seq_lseek,
+	.release	=	seq_release_private,
+};
+
+int __init ac6_proc_init(void)
+{
+	struct proc_dir_entry *p;
+
+	p = create_proc_entry("anycast6", S_IRUGO, proc_net);
+	if (p)
+		p->proc_fops = &ac6_seq_fops;
+	return 0;
+}
+
+void ac6_proc_exit(void)
+{
+	proc_net_remove("anycast6");
+}
 #endif
+

net/ipv6/ip6_flowlabel.c

@@ -657,7 +657,25 @@ static struct seq_operations ip6fl_seq_ops = {
 
 static int ip6fl_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &ip6fl_seq_ops);
+	struct seq_file *seq;
+	int rc = -ENOMEM;
+	struct ip6fl_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
+
+	if (!s)
+		goto out;
+
+	rc = seq_open(file, &ip6fl_seq_ops);
+	if (rc)
+		goto out_kfree;
+
+	seq = file->private_data;
+	seq->private = s;
+	memset(s, 0, sizeof(*s));
+out:
+	return rc;
+out_kfree:
+	kfree(s);
+	goto out;
 }
 
 static struct file_operations ip6fl_seq_fops = {
@@ -665,7 +683,7 @@ static struct file_operations ip6fl_seq_fops = {
 	.open		=	ip6fl_seq_open,
 	.read		=	seq_read,
 	.llseek		=	seq_lseek,
-	.release	=	seq_release,
+	.release	=	seq_release_private,
 };
 #endif
 

net/ipv6/raw.c

@@ -1029,7 +1029,22 @@ static struct seq_operations raw6_seq_ops = {
 
 static int raw6_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &raw6_seq_ops);
+	struct seq_file *seq;
+	int rc = -ENOMEM;
+	struct raw6_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
+	if (!s)
+		goto out;
+	rc = seq_open(file, &raw6_seq_ops);
+	if (rc)
+		goto out_kfree;
+	seq = file->private_data;
+	seq->private = s;
+	memset(s, 0, sizeof(*s));
+out:
+	return rc;
+out_kfree:
+	kfree(s);
+	goto out;
 }
 
 static struct file_operations raw6_seq_fops = {
@@ -1037,7 +1052,7 @@ static struct file_operations raw6_seq_fops = {
 	.open =		raw6_seq_open,
 	.read =		seq_read,
 	.llseek =	seq_lseek,
-	.release =	seq_release,
+	.release =	seq_release_private,
 };
 
 int __init raw6_proc_init(void)

net/ipv6/tcp_ipv6.c

@@ -93,43 +93,6 @@ static __inline__ int tcp_v6_sk_hashfn(struct sock *sk)
 	return tcp_v6_hashfn(laddr, lport, faddr, fport);
 }
 
-static inline int ipv6_rcv_saddr_equal(struct sock *sk, struct sock *sk2)
-{
-	struct ipv6_pinfo *np = inet6_sk(sk);
-	int addr_type = ipv6_addr_type(&np->rcv_saddr);
-
-	if (!inet_sk(sk2)->rcv_saddr && !ipv6_only_sock(sk))
-		return 1;
-
-	if (sk2->sk_family == AF_INET6 &&
-	    ipv6_addr_any(&inet6_sk(sk2)->rcv_saddr) &&
-	    !(ipv6_only_sock(sk2) && addr_type == IPV6_ADDR_MAPPED))
-		return 1;
-
-	if (addr_type == IPV6_ADDR_ANY &&
-	    (!ipv6_only_sock(sk) ||
-	     !(sk2->sk_family == AF_INET6 ?
-	       (ipv6_addr_type(&inet6_sk(sk2)->rcv_saddr) == IPV6_ADDR_MAPPED) :
-	        1)))
-		return 1;
-
-	if (sk2->sk_family == AF_INET6 &&
-	    !ipv6_addr_cmp(&np->rcv_saddr,
-			   (sk2->sk_state != TCP_TIME_WAIT ?
-			    &inet6_sk(sk2)->rcv_saddr :
-			    &((struct tcp_tw_bucket *)sk)->tw_v6_rcv_saddr)))
-		return 1;
-
-	if (addr_type == IPV6_ADDR_MAPPED &&
-	    !ipv6_only_sock(sk2) &&
-	    (!inet_sk(sk2)->rcv_saddr ||
-	     !inet_sk(sk)->rcv_saddr ||
-	     inet_sk(sk)->rcv_saddr == inet_sk(sk2)->rcv_saddr))
-		return 1;
-
-	return 0;
-}
-
 static inline int tcp_v6_bind_conflict(struct sock *sk,
 				       struct tcp_bind_bucket *tb)
 {

net/ipv6/udp.c

@@ -59,43 +59,6 @@
 
 DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6);
 
-/* XXX This is identical to tcp_ipv6.c:ipv6_rcv_saddr_equal, put
- * XXX it somewhere common. -DaveM
- */
-static __inline__ int udv6_rcv_saddr_equal(struct sock *sk, struct sock *sk2)
-{
-	struct ipv6_pinfo *np = inet6_sk(sk);
-	int addr_type = ipv6_addr_type(&np->rcv_saddr);
-
-	if (!inet_sk(sk2)->rcv_saddr && !ipv6_only_sock(sk))
-		return 1;
-
-	if (sk2->sk_family == AF_INET6 && 
-	    ipv6_addr_any(&inet6_sk(sk2)->rcv_saddr) &&
-	    !(ipv6_only_sock(sk2) && addr_type == IPV6_ADDR_MAPPED))
-		return 1;
-
-	if (addr_type == IPV6_ADDR_ANY && 
-	    (!ipv6_only_sock(sk) || 
-	     !(sk2->sk_family == AF_INET6 ?
-	       (ipv6_addr_type(&inet6_sk(sk2)->rcv_saddr) == IPV6_ADDR_MAPPED) : 1)))
-		return 1;
-
-	if (sk2->sk_family == AF_INET6 && 
-	    !ipv6_addr_cmp(&inet6_sk(sk)->rcv_saddr,
-			   &inet6_sk(sk2)->rcv_saddr))
-		return 1;
-
-	if (addr_type == IPV6_ADDR_MAPPED &&
-	    !ipv6_only_sock(sk2) &&
-	    (!inet_sk(sk2)->rcv_saddr || 
-	     !inet_sk(sk)->rcv_saddr ||
-	     inet_sk(sk)->rcv_saddr == inet_sk(sk2)->rcv_saddr))
-		return 1;
-
-	return 0;
-}
-
 /* Grrr, addr_type already calculated by caller, but I don't want
  * to add some silly "cookie" argument to this method just for that.
  */
@@ -151,7 +114,7 @@ static int udp_v6_get_port(struct sock *sk, unsigned short snum)
 			    sk2 != sk &&
 			    sk2->sk_bound_dev_if == sk->sk_bound_dev_if &&
 			    (!sk2->sk_reuse || !sk->sk_reuse) &&
-			    udv6_rcv_saddr_equal(sk, sk2))
+			    ipv6_rcv_saddr_equal(sk, sk2))
 				goto fail;
 		}
 	}

net/ipv6/xfrm6_input.c

@@ -67,10 +67,8 @@ int xfrm6_rcv(struct sk_buff **pskb, unsigned int *nhoffp)
 
 		xfrm_vec[xfrm_nr++].xvec = x;
 
-		iph = skb->nh.ipv6h;
-
 		if (x->props.mode) { /* XXX */
-			if (iph->nexthdr != IPPROTO_IPV6)
+			if (nexthdr != IPPROTO_IPV6)
 				goto drop;
 			skb->nh.raw = skb->data;
 			iph = skb->nh.ipv6h;