From 0f21ba7cc3320d33459ecb3f538f1a42040c29cd Mon Sep 17 00:00:00 2001 From: Eric Kinzie Date: Thu, 6 Oct 2005 22:19:28 -0700 Subject: [PATCH] [ATM]: add support for LECS addresses learned from network From: Eric Kinzie Signed-off-by: Chas Williams Signed-off-by: David S. Miller --- include/linux/atmdev.h | 10 +++++++++ net/atm/addr.c | 51 +++++++++++++++++++++++++++++++----------- net/atm/addr.h | 12 +++++----- net/atm/resources.c | 20 ++++++++++++----- 4 files changed, 70 insertions(+), 23 deletions(-) diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h index f1fd849e553..aca9b344bd3 100644 --- a/include/linux/atmdev.h +++ b/include/linux/atmdev.h @@ -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 */ 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; diff --git a/net/atm/addr.h b/net/atm/addr.h index 3099d21feea..f39433ad45d 100644 --- a/net/atm/addr.h +++ b/net/atm/addr.h @@ -9,10 +9,12 @@ #include #include - -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 diff --git a/net/atm/resources.c b/net/atm/resources.c index a57a9268bd2..415d2615d47 100644 --- a/net/atm/resources.c +++ b/net/atm/resources.c @@ -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; -- 2.41.1