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Commit 0f21ba7c authored by Eric Kinzie's avatar Eric Kinzie Committed by David S. Miller
Browse files

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



From: Eric Kinzie <ekinzie@cmf.nrl.navy.mil>
Signed-off-by: default avatarChas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 20c9c825

include/linux/atmdev.h

+10 −0
Original line number Diff line number Diff line
@@ -76,6 +76,13 @@ struct atm_dev_stats { 
					/* set interface ESI */

#define ATM_SETESIF	_IOW('a',ATMIOC_ITF+13,struct atmif_sioc)

					/* force interface ESI */

#define ATM_ADDLECSADDR	_IOW('a', ATMIOC_ITF+14, struct atmif_sioc)

					/* register a LECS address */

#define ATM_DELLECSADDR	_IOW('a', ATMIOC_ITF+15, struct atmif_sioc)

					/* unregister a LECS address */

#define ATM_GETLECSADDR	_IOW('a', ATMIOC_ITF+16, struct atmif_sioc)

					/* retrieve LECS address(es) */



#define ATM_GETSTAT	_IOW('a',ATMIOC_SARCOM+0,struct atmif_sioc)

					/* get AAL layer statistics */

#define ATM_GETSTATZ	_IOW('a',ATMIOC_SARCOM+1,struct atmif_sioc)
@@ -328,6 +335,8 @@ struct atm_dev_addr { 
	struct list_head entry;		/* next address */

};



enum atm_addr_type_t { ATM_ADDR_LOCAL, ATM_ADDR_LECS };



struct atm_dev {

	const struct atmdev_ops *ops;	/* device operations; NULL if unused */

	const struct atmphy_ops *phy;	/* PHY operations, may be undefined */
@@ -338,6 +347,7 @@ struct atm_dev { 
	void		*phy_data;	/* private PHY date */

	unsigned long	flags;		/* device flags (ATM_DF_*) */

	struct list_head local;		/* local ATM addresses */

	struct list_head lecs;		/* LECS ATM addresses learned via ILMI */

	unsigned char	esi[ESI_LEN];	/* ESI ("MAC" addr) */

	struct atm_cirange ci_range;	/* VPI/VCI range */

	struct k_atm_dev_stats stats;	/* statistics */

net/atm/addr.c

+38 −13
Original line number Diff line number Diff line
@@ -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);

	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;
@@ -80,27 +92,35 @@ 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);

	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);

			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;

net/atm/addr.h

+7 −5
Original line number Diff line number Diff line
@@ -9,10 +9,12 @@ 
#include <linux/atm.h>

#include <linux/atmdev.h>





void atm_reset_addr(struct atm_dev *dev);

int atm_add_addr(struct atm_dev *dev,struct sockaddr_atmsvc *addr);

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);

void atm_reset_addr(struct atm_dev *dev, enum atm_addr_type_t type);

int atm_add_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr,

		 enum atm_addr_type_t type);

int atm_del_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr,

		 enum atm_addr_type_t type);

int atm_get_addr(struct atm_dev *dev, struct sockaddr_atmsvc __user *buf,

		 size_t size, enum atm_addr_type_t type);



#endif

net/atm/resources.c

+15 −5
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ static struct atm_dev *__alloc_atm_dev(const char *type) 
	dev->link_rate = ATM_OC3_PCR;

	spin_lock_init(&dev->lock);

	INIT_LIST_HEAD(&dev->local);

	INIT_LIST_HEAD(&dev->lecs);



	return dev;

}
@@ -320,10 +321,12 @@ int atm_dev_ioctl(unsigned int cmd, void __user *arg) 
				error = -EPERM;

				goto done;

			}

			atm_reset_addr(dev);

			atm_reset_addr(dev, ATM_ADDR_LOCAL);

			break;

		case ATM_ADDADDR:

		case ATM_DELADDR:

		case ATM_ADDLECSADDR:

		case ATM_DELLECSADDR:

			if (!capable(CAP_NET_ADMIN)) {

				error = -EPERM;

				goto done;
@@ -335,14 +338,21 @@ int atm_dev_ioctl(unsigned int cmd, void __user *arg) 
					error = -EFAULT;

					goto done;

				}

				if (cmd == ATM_ADDADDR)

					error = atm_add_addr(dev, &addr);

				if (cmd == ATM_ADDADDR || cmd == ATM_ADDLECSADDR)

					error = atm_add_addr(dev, &addr,

							     (cmd == ATM_ADDADDR ?

							      ATM_ADDR_LOCAL : ATM_ADDR_LECS));

				else

					error = atm_del_addr(dev, &addr);

					error = atm_del_addr(dev, &addr,

							     (cmd == ATM_DELADDR ?

							      ATM_ADDR_LOCAL : ATM_ADDR_LECS));

				goto done;

			}

		case ATM_GETADDR:

			error = atm_get_addr(dev, buf, len);

		case ATM_GETLECSADDR:

			error = atm_get_addr(dev, buf, len,

					     (cmd == ATM_GETADDR ?

					      ATM_ADDR_LOCAL : ATM_ADDR_LECS));

			if (error < 0)

				goto done;

			size = error;