[ATM]: add support for LECS addresses learned from network

From: Eric Kinzie <ekinzie@cmf.nrl.navy.mil>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 38 insertions, 13 deletions

diff --git a/net/atm/addr.c b/net/atm/addr.c
index a30d0bf4806..3060fd0ba4b 100644
--- a/net/atm/addr.c
+++ b/net/atm/addr.c
@@ -44,31 +44,43 @@ static void notify_sigd(struct atm_dev *dev)
         sigd_enq(NULL, as_itf_notify, NULL, &pvc, NULL);
 }
 
-void atm_reset_addr(struct atm_dev *dev)
+void atm_reset_addr(struct atm_dev *dev, enum atm_addr_type_t atype)
 {
         unsigned long flags;
         struct atm_dev_addr *this, *p;
+        struct list_head *head;
 
         spin_lock_irqsave(&dev->lock, flags);
-        list_for_each_entry_safe(this, p, &dev->local, entry) {
+        if (atype == ATM_ADDR_LECS)
+                head = &dev->lecs;
+        else
+                head = &dev->local;
+        list_for_each_entry_safe(this, p, head, entry) {
                 list_del(&this->entry);
                 kfree(this);
         }
         spin_unlock_irqrestore(&dev->lock, flags);
-        notify_sigd(dev);
+        if (head == &dev->local)
+                notify_sigd(dev);
 }
 
-int atm_add_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr)
+int atm_add_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr,
+                 enum atm_addr_type_t atype)
 {
         unsigned long flags;
         struct atm_dev_addr *this;
+        struct list_head *head;
         int error;
 
         error = check_addr(addr);
         if (error)
                 return error;
         spin_lock_irqsave(&dev->lock, flags);
-        list_for_each_entry(this, &dev->local, entry) {
+        if (atype == ATM_ADDR_LECS)
+                head = &dev->lecs;
+        else
+                head = &dev->local;
+        list_for_each_entry(this, head, entry) {
                 if (identical(&this->addr, addr)) {
                         spin_unlock_irqrestore(&dev->lock, flags);
                         return -EEXIST;
@@ -80,28 +92,36 @@ int atm_add_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr)
                 return -ENOMEM;
         }
         this->addr = *addr;
-        list_add(&this->entry, &dev->local);
+        list_add(&this->entry, head);
         spin_unlock_irqrestore(&dev->lock, flags);
-        notify_sigd(dev);
+        if (head == &dev->local)
+                notify_sigd(dev);
         return 0;
 }
 
-int atm_del_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr)
+int atm_del_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr,
+                 enum atm_addr_type_t atype)
 {
         unsigned long flags;
         struct atm_dev_addr *this;
+        struct list_head *head;
         int error;
 
         error = check_addr(addr);
         if (error)
                 return error;
         spin_lock_irqsave(&dev->lock, flags);
-        list_for_each_entry(this, &dev->local, entry) {
+        if (atype == ATM_ADDR_LECS)
+                head = &dev->lecs;
+        else
+                head = &dev->local;
+        list_for_each_entry(this, head, entry) {
                 if (identical(&this->addr, addr)) {
                         list_del(&this->entry);
                         spin_unlock_irqrestore(&dev->lock, flags);
                         kfree(this);
-                        notify_sigd(dev);
+                        if (head == &dev->local)
+                                notify_sigd(dev);
                         return 0;
                 }
         }
@@ -110,22 +130,27 @@ int atm_del_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr)
 }
 
 int atm_get_addr(struct atm_dev *dev, struct sockaddr_atmsvc __user * buf,
-                 size_t size)
+                 size_t size, enum atm_addr_type_t atype)
 {
         unsigned long flags;
         struct atm_dev_addr *this;
+        struct list_head *head;
         int total = 0, error;
         struct sockaddr_atmsvc *tmp_buf, *tmp_bufp;
 
         spin_lock_irqsave(&dev->lock, flags);
-        list_for_each_entry(this, &dev->local, entry)
+        if (atype == ATM_ADDR_LECS)
+                head = &dev->lecs;
+        else
+                head = &dev->local;
+        list_for_each_entry(this, head, entry)
             total += sizeof(struct sockaddr_atmsvc);
         tmp_buf = tmp_bufp = kmalloc(total, GFP_ATOMIC);
         if (!tmp_buf) {
                 spin_unlock_irqrestore(&dev->lock, flags);
                 return -ENOMEM;
         }
-        list_for_each_entry(this, &dev->local, entry)
+        list_for_each_entry(this, head, entry)
             memcpy(tmp_bufp++, &this->addr, sizeof(struct sockaddr_atmsvc));
         spin_unlock_irqrestore(&dev->lock, flags);
         error = total > size ? -E2BIG : total;