Merge nuts.ninka.net:/disk1/davem/BK/net-2.6.1

into nuts.ninka.net:/disk1/davem/BK/net-2.6

include/net/sctp/sctp.h

@@ -90,7 +90,6 @@
 #include <net/snmp.h>
 #include <net/sctp/structs.h>
 #include <net/sctp/constants.h>
-#include <net/sctp/sm.h>
 
 
 /* Set SCTP_DEBUG flag via config if not already set. */

include/net/xfrm.h

@@ -860,7 +860,7 @@ extern void xfrm_policy_flush(void);
 extern void xfrm_policy_kill(struct xfrm_policy *);
 extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
 extern struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir, struct flowi *fl);
-extern int xfrm_flush_bundles(struct xfrm_state *x);
+extern int xfrm_flush_bundles(void);
 
 extern wait_queue_head_t km_waitq;
 extern void km_state_expired(struct xfrm_state *x, int hard);

net/ipv4/netfilter/ipt_recent.c

@@ -91,8 +91,10 @@ static struct recent_ip_tables *r_tables = NULL;
  */
 static spinlock_t recent_lock = SPIN_LOCK_UNLOCKED;
 
+#ifdef CONFIG_PROC_FS
 /* Our /proc/net/ipt_recent entry */
 static struct proc_dir_entry *proc_net_ipt_recent = NULL;
+#endif
 
 /* Function declaration for later. */
 static int
@@ -959,8 +961,10 @@ static int __init init(void)
 	int count;
 
 	printk(version);
+#ifdef CONFIG_PROC_FS
 	proc_net_ipt_recent = proc_mkdir("ipt_recent",proc_net);
 	if(!proc_net_ipt_recent) return -ENOMEM;
+#endif
 
 	if(ip_list_hash_size && ip_list_hash_size <= ip_list_tot) {
 	  printk(KERN_WARNING RECENT_NAME ": ip_list_hash_size too small, resetting to default.\n");

net/ipv6/ndisc.c

@@ -75,6 +75,9 @@
 #include <net/checksum.h>
 #include <linux/proc_fs.h>
 
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv6.h>
+
 static struct socket *ndisc_socket;
 
 static u32 ndisc_hash(const void *pkey, const struct net_device *dev);
@@ -497,10 +500,11 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
 
 	skb->dst = dst;
 	idev = in6_dev_get(dst->dev);
-	dst_output(skb);
-
+	err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
+	if (!err) {
 		ICMP6_INC_STATS(idev, Icmp6OutNeighborAdvertisements);
 		ICMP6_INC_STATS(idev, Icmp6OutMsgs);
+	}
 
 	if (likely(idev != NULL))
 		in6_dev_put(idev);
@@ -576,10 +580,11 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
 	/* send it! */
 	skb->dst = dst;
 	idev = in6_dev_get(dst->dev);
-	dst_output(skb);
-
+	err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
+	if (!err) {
 		ICMP6_INC_STATS(idev, Icmp6OutNeighborSolicits);
 		ICMP6_INC_STATS(idev, Icmp6OutMsgs);
+	}
 
 	if (likely(idev != NULL))
 		in6_dev_put(idev);
@@ -644,10 +649,11 @@ void ndisc_send_rs(struct net_device *dev, struct in6_addr *saddr,
 	/* send it! */
 	skb->dst = dst;
 	idev = in6_dev_get(dst->dev);
-	dst_output(skb);
-
+	err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
+	if (!err) {
 		ICMP6_INC_STATS(idev, Icmp6OutRouterSolicits);
 		ICMP6_INC_STATS(idev, Icmp6OutMsgs);
+	}
 
 	if (likely(idev != NULL))
 		in6_dev_put(idev);
@@ -1404,10 +1410,11 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
 
 	buff->dst = dst;
 	idev = in6_dev_get(dst->dev);
-	dst_output(buff);
-
+	err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, buff, NULL, dst->dev, dst_output);
+	if (!err) {
 		ICMP6_INC_STATS(idev, Icmp6OutRedirects);
 		ICMP6_INC_STATS(idev, Icmp6OutMsgs);
+	}
 
 	if (likely(idev != NULL))
 		in6_dev_put(idev);

net/sctp/associola.c

@@ -58,6 +58,7 @@
 #include <linux/in.h>
 #include <net/ipv6.h>
 #include <net/sctp/sctp.h>
+#include <net/sctp/sm.h>
 
 /* Forward declarations for internal functions. */
 static void sctp_assoc_bh_rcv(struct sctp_association *asoc);

net/sctp/outqueue.c

@@ -53,6 +53,7 @@
 #include <net/sock.h>	  /* For skb_set_owner_w */
 
 #include <net/sctp/sctp.h>
+#include <net/sctp/sm.h>
 
 /* Declare internal functions here.  */
 static int sctp_acked(struct sctp_sackhdr *sack, __u32 tsn);

net/sctp/socket.c

@@ -77,6 +77,7 @@
 #include <linux/socket.h> /* for sa_family_t */
 #include <net/sock.h>
 #include <net/sctp/sctp.h>
+#include <net/sctp/sm.h>
 
 /* WARNING:  Please do not remove the SCTP_STATIC attribute to
  * any of the functions below as they are used to export functions

net/sctp/transport.c

@@ -50,6 +50,7 @@
 
 #include <linux/types.h>
 #include <net/sctp/sctp.h>
+#include <net/sctp/sm.h>
 
 /* 1st Level Abstractions.  */
 

net/xfrm/xfrm_policy.c

@@ -19,6 +19,8 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
+#include <linux/notifier.h>
+#include <linux/netdevice.h>
 #include <net/xfrm.h>
 #include <net/ip.h>
 
@@ -690,6 +692,8 @@ static inline int policy_to_flow_dir(int dir)
 	};
 }
 
+static int stale_bundle(struct dst_entry *dst);
+
 /* Main function: finds/creates a bundle for given flow.
  *
  * At the moment we eat a raw IP route. Mostly to speed up lookups
@@ -814,10 +818,11 @@ int xfrm_lookup(struct dst_entry **dst_p, struct flowi *fl,
 		}
 
 		write_lock_bh(&policy->lock);
-		if (unlikely(policy->dead)) {
+		if (unlikely(policy->dead || stale_bundle(dst))) {
 			/* Wow! While we worked on resolving, this
 			 * policy has gone. Retry. It is not paranoia,
 			 * we just cannot enlist new bundle to dead object.
+			 * We can't enlist stable bundles either.
 			 */
 			write_unlock_bh(&policy->lock);
 
@@ -984,19 +989,28 @@ int __xfrm_route_forward(struct sk_buff *skb, unsigned short family)
 /* Optimize later using cookies and generation ids. */
 
 static struct dst_entry *xfrm_dst_check(struct dst_entry *dst, u32 cookie)
+{
+	if (!stale_bundle(dst))
+		return dst;
+
+	dst_release(dst);
+	return NULL;
+}
+
+static int stale_bundle(struct dst_entry *dst)
 {
 	struct dst_entry *child = dst;
 
 	while (child) {
 		if (child->obsolete > 0 ||
+		    (child->dev && !netif_running(child->dev)) ||
 		    (child->xfrm && child->xfrm->km.state != XFRM_STATE_VALID)) {
-			dst_release(dst);
-			return NULL;
+			return 1;
 		}
 		child = child->child;
 	}
 
-	return dst;
+	return 0;
 }
 
 static void xfrm_dst_destroy(struct dst_entry *dst)
@@ -1022,7 +1036,7 @@ static struct dst_entry *xfrm_negative_advice(struct dst_entry *dst)
 	return dst;
 }
 
-static void __xfrm_garbage_collect(void)
+static void xfrm_prune_bundles(int (*func)(struct dst_entry *))
 {
 	int i;
 	struct xfrm_policy *pol;
@@ -1034,7 +1048,7 @@ static void __xfrm_garbage_collect(void)
 			write_lock(&pol->lock);
 			dstp = &pol->bundles;
 			while ((dst=*dstp) != NULL) {
-				if (atomic_read(&dst->__refcnt) == 0) {
+				if (func(dst)) {
 					*dstp = dst->next;
 					dst->next = gc_list;
 					gc_list = dst;
@@ -1054,46 +1068,19 @@ static void __xfrm_garbage_collect(void)
 	}
 }
 
-static int bundle_depends_on(struct dst_entry *dst, struct xfrm_state *x)
+static int unused_bundle(struct dst_entry *dst)
 {
-	do {
-		if (dst->xfrm == x)
-			return 1;
-	} while ((dst = dst->child) != NULL);
-	return 0;
+	return !atomic_read(&dst->__refcnt);
 }
 
-int xfrm_flush_bundles(struct xfrm_state *x)
+static void __xfrm_garbage_collect(void)
 {
-	int i;
-	struct xfrm_policy *pol;
-	struct dst_entry *dst, **dstp, *gc_list = NULL;
-
-	read_lock_bh(&xfrm_policy_lock);
-	for (i=0; i<2*XFRM_POLICY_MAX; i++) {
-		for (pol = xfrm_policy_list[i]; pol; pol = pol->next) {
-			write_lock(&pol->lock);
-			dstp = &pol->bundles;
-			while ((dst=*dstp) != NULL) {
-				if (bundle_depends_on(dst, x)) {
-					*dstp = dst->next;
-					dst->next = gc_list;
-					gc_list = dst;
-				} else {
-					dstp = &dst->next;
-				}
-			}
-			write_unlock(&pol->lock);
-		}
-	}
-	read_unlock_bh(&xfrm_policy_lock);
-
-	while (gc_list) {
-		dst = gc_list;
-		gc_list = dst->next;
-		dst_free(dst);
-	}
+	xfrm_prune_bundles(unused_bundle);
+}
 
+int xfrm_flush_bundles(void)
+{
+	xfrm_prune_bundles(stale_bundle);
 	return 0;
 }
 
@@ -1216,6 +1203,21 @@ void xfrm_policy_put_afinfo(struct xfrm_policy_afinfo *afinfo)
 	read_unlock(&afinfo->lock);
 }
 
+static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+	switch (event) {
+	case NETDEV_DOWN:
+		xfrm_flush_bundles();
+	}
+	return NOTIFY_DONE;
+}
+
+struct notifier_block xfrm_dev_notifier = {
+	xfrm_dev_event,
+	NULL,
+	0
+};
+
 void __init xfrm_policy_init(void)
 {
 	xfrm_dst_cache = kmem_cache_create("xfrm_dst_cache",
@@ -1226,6 +1228,7 @@ void __init xfrm_policy_init(void)
 		panic("XFRM: failed to allocate xfrm_dst_cache\n");
 
 	INIT_WORK(&xfrm_policy_gc_work, xfrm_policy_gc_task, NULL);
+	register_netdevice_notifier(&xfrm_dev_notifier);
 }
 
 void __init xfrm_init(void)

net/xfrm/xfrm_state.c

@@ -219,7 +219,7 @@ static void __xfrm_state_delete(struct xfrm_state *x)
 		 * there are DSTs attached to this xfrm_state.
 		 */
 		if (atomic_read(&x->refcnt) > 2)
-			xfrm_flush_bundles(x);
+			xfrm_flush_bundles();
 
 		/* All xfrm_state objects are created by one of two possible
 		 * paths: