[NET]: Make device event notification network namespace safe

[pandora-kernel.git] / net / atm / clip.c

diff --git a/net/atm/clip.c b/net/atm/clip.c
index ecf0f79..741742f 100644 (file)
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -40,14 +40,6 @@
 #include "resources.h"
 #include <net/atmclip.h>
 
-
-#if 0
-#define DPRINTK(format,args...) printk(format,##args)
-#else
-#define DPRINTK(format,args...)
-#endif
-
-
 static struct net_device *clip_devs;
 static struct atm_vcc *atmarpd;
 static struct neigh_table clip_tbl;
@@ -59,7 +51,7 @@ static int to_atmarpd(enum atmarp_ctrl_type type, int itf, __be32 ip)
        struct atmarp_ctrl *ctrl;
        struct sk_buff *skb;
 
-       DPRINTK("to_atmarpd(%d)\n", type);
+       pr_debug("to_atmarpd(%d)\n", type);
        if (!atmarpd)
                return -EUNATCH;
        skb = alloc_skb(sizeof(struct atmarp_ctrl),GFP_ATOMIC);
@@ -79,7 +71,7 @@ static int to_atmarpd(enum atmarp_ctrl_type type, int itf, __be32 ip)
 
 static void link_vcc(struct clip_vcc *clip_vcc, struct atmarp_entry *entry)
 {
-       DPRINTK("link_vcc %p to entry %p (neigh %p)\n", clip_vcc, entry,
+       pr_debug("link_vcc %p to entry %p (neigh %p)\n", clip_vcc, entry,
                entry->neigh);
        clip_vcc->entry = entry;
        clip_vcc->xoff = 0;     /* @@@ may overrun buffer by one packet */
@@ -134,7 +126,7 @@ static int neigh_check_cb(struct neighbour *n)
                unsigned long exp = cv->last_use + cv->idle_timeout;
 
                if (cv->idle_timeout && time_after(jiffies, exp)) {
-                       DPRINTK("releasing vcc %p->%p of entry %p\n",
+                       pr_debug("releasing vcc %p->%p of entry %p\n",
                                cv, cv->vcc, entry);
                        vcc_release_async(cv->vcc, -ETIMEDOUT);
                }
@@ -146,7 +138,7 @@ static int neigh_check_cb(struct neighbour *n)
        if (atomic_read(&n->refcnt) > 1) {
                struct sk_buff *skb;
 
-               DPRINTK("destruction postponed with ref %d\n",
+               pr_debug("destruction postponed with ref %d\n",
                        atomic_read(&n->refcnt));
 
                while ((skb = skb_dequeue(&n->arp_queue)) != NULL)
@@ -155,7 +147,7 @@ static int neigh_check_cb(struct neighbour *n)
                return 0;
        }
 
-       DPRINTK("expired neigh %p\n", n);
+       pr_debug("expired neigh %p\n", n);
        return 1;
 }
 
@@ -171,14 +163,14 @@ static int clip_arp_rcv(struct sk_buff *skb)
 {
        struct atm_vcc *vcc;
 
-       DPRINTK("clip_arp_rcv\n");
+       pr_debug("clip_arp_rcv\n");
        vcc = ATM_SKB(skb)->vcc;
        if (!vcc || !atm_charge(vcc, skb->truesize)) {
                dev_kfree_skb_any(skb);
                return 0;
        }
-       DPRINTK("pushing to %p\n", vcc);
-       DPRINTK("using %p\n", CLIP_VCC(vcc)->old_push);
+       pr_debug("pushing to %p\n", vcc);
+       pr_debug("using %p\n", CLIP_VCC(vcc)->old_push);
        CLIP_VCC(vcc)->old_push(vcc, skb);
        return 0;
 }
@@ -196,9 +188,9 @@ static void clip_push(struct atm_vcc *vcc, struct sk_buff *skb)
 {
        struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
 
-       DPRINTK("clip push\n");
+       pr_debug("clip push\n");
        if (!skb) {
-               DPRINTK("removing VCC %p\n", clip_vcc);
+               pr_debug("removing VCC %p\n", clip_vcc);
                if (clip_vcc->entry)
                        unlink_clip_vcc(clip_vcc);
                clip_vcc->old_push(vcc, NULL);  /* pass on the bad news */
@@ -247,7 +239,7 @@ static void clip_pop(struct atm_vcc *vcc, struct sk_buff *skb)
        int old;
        unsigned long flags;
 
-       DPRINTK("clip_pop(vcc %p)\n", vcc);
+       pr_debug("clip_pop(vcc %p)\n", vcc);
        clip_vcc->old_pop(vcc, skb);
        /* skb->dev == NULL in outbound ARP packets */
        if (!dev)
@@ -263,7 +255,7 @@ static void clip_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 
 static void clip_neigh_solicit(struct neighbour *neigh, struct sk_buff *skb)
 {
-       DPRINTK("clip_neigh_solicit (neigh %p, skb %p)\n", neigh, skb);
+       pr_debug("clip_neigh_solicit (neigh %p, skb %p)\n", neigh, skb);
        to_atmarpd(act_need, PRIV(neigh->dev)->number, NEIGH2ENTRY(neigh)->ip);
 }
 
@@ -292,7 +284,7 @@ static int clip_constructor(struct neighbour *neigh)
        struct in_device *in_dev;
        struct neigh_parms *parms;
 
-       DPRINTK("clip_constructor (neigh %p, entry %p)\n", neigh, entry);
+       pr_debug("clip_constructor (neigh %p, entry %p)\n", neigh, entry);
        neigh->type = inet_addr_type(entry->ip);
        if (neigh->type != RTN_UNICAST)
                return -EINVAL;
@@ -376,7 +368,7 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
        int old;
        unsigned long flags;
 
-       DPRINTK("clip_start_xmit (skb %p)\n", skb);
+       pr_debug("clip_start_xmit (skb %p)\n", skb);
        if (!skb->dst) {
                printk(KERN_ERR "clip_start_xmit: skb->dst == NULL\n");
                dev_kfree_skb(skb);
@@ -412,9 +404,9 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
                }
                return 0;
        }
-       DPRINTK("neigh %p, vccs %p\n", entry, entry->vccs);
+       pr_debug("neigh %p, vccs %p\n", entry, entry->vccs);
        ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc;
-       DPRINTK("using neighbour %p, vcc %p\n", skb->dst->neighbour, vcc);
+       pr_debug("using neighbour %p, vcc %p\n", skb->dst->neighbour, vcc);
        if (entry->vccs->encap) {
                void *here;
 
@@ -425,7 +417,7 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
        atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
        ATM_SKB(skb)->atm_options = vcc->atm_options;
        entry->vccs->last_use = jiffies;
-       DPRINTK("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, vcc, vcc->dev);
+       pr_debug("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, vcc, vcc->dev);
        old = xchg(&entry->vccs->xoff, 1);      /* assume XOFF ... */
        if (old) {
                printk(KERN_WARNING "clip_start_xmit: XOFF->XOFF transition\n");
@@ -468,7 +460,7 @@ static int clip_mkip(struct atm_vcc *vcc, int timeout)
        clip_vcc = kmalloc(sizeof(struct clip_vcc), GFP_KERNEL);
        if (!clip_vcc)
                return -ENOMEM;
-       DPRINTK("mkip clip_vcc %p vcc %p\n", clip_vcc, vcc);
+       pr_debug("mkip clip_vcc %p vcc %p\n", clip_vcc, vcc);
        clip_vcc->vcc = vcc;
        vcc->user_back = clip_vcc;
        set_bit(ATM_VF_IS_CLIP, &vcc->flags);
@@ -538,7 +530,7 @@ static int clip_setentry(struct atm_vcc *vcc, __be32 ip)
                        printk(KERN_ERR "hiding hidden ATMARP entry\n");
                        return 0;
                }
-               DPRINTK("setentry: remove\n");
+               pr_debug("setentry: remove\n");
                unlink_clip_vcc(clip_vcc);
                return 0;
        }
@@ -552,9 +544,9 @@ static int clip_setentry(struct atm_vcc *vcc, __be32 ip)
        entry = NEIGH2ENTRY(neigh);
        if (entry != clip_vcc->entry) {
                if (!clip_vcc->entry)
-                       DPRINTK("setentry: add\n");
+                       pr_debug("setentry: add\n");
                else {
-                       DPRINTK("setentry: update\n");
+                       pr_debug("setentry: update\n");
                        unlink_clip_vcc(clip_vcc);
                }
                link_vcc(clip_vcc, entry);
@@ -611,7 +603,7 @@ static int clip_create(int number)
        }
        clip_priv->next = clip_devs;
        clip_devs = dev;
-       DPRINTK("registered (net:%s)\n", dev->name);
+       pr_debug("registered (net:%s)\n", dev->name);
        return number;
 }
 
@@ -620,6 +612,9 @@ static int clip_device_event(struct notifier_block *this, unsigned long event,
 {
        struct net_device *dev = arg;
 
+       if (dev->nd_net != &init_net)
+               return NOTIFY_DONE;
+
        if (event == NETDEV_UNREGISTER) {
                neigh_ifdown(&clip_tbl, dev);
                return NOTIFY_DONE;
@@ -631,16 +626,16 @@ static int clip_device_event(struct notifier_block *this, unsigned long event,
 
        switch (event) {
        case NETDEV_UP:
-               DPRINTK("clip_device_event NETDEV_UP\n");
+               pr_debug("clip_device_event NETDEV_UP\n");
                to_atmarpd(act_up, PRIV(dev)->number, 0);
                break;
        case NETDEV_GOING_DOWN:
-               DPRINTK("clip_device_event NETDEV_DOWN\n");
+               pr_debug("clip_device_event NETDEV_DOWN\n");
                to_atmarpd(act_down, PRIV(dev)->number, 0);
                break;
        case NETDEV_CHANGE:
        case NETDEV_CHANGEMTU:
-               DPRINTK("clip_device_event NETDEV_CHANGE*\n");
+               pr_debug("clip_device_event NETDEV_CHANGE*\n");
                to_atmarpd(act_change, PRIV(dev)->number, 0);
                break;
        }
@@ -681,14 +676,14 @@ static struct notifier_block clip_inet_notifier = {
 
 static void atmarpd_close(struct atm_vcc *vcc)
 {
-       DPRINTK("atmarpd_close\n");
+       pr_debug("atmarpd_close\n");
 
        rtnl_lock();
        atmarpd = NULL;
        skb_queue_purge(&sk_atm(vcc)->sk_receive_queue);
        rtnl_unlock();
 
-       DPRINTK("(done)\n");
+       pr_debug("(done)\n");
        module_put(THIS_MODULE);
 }