diff options
| -rw-r--r-- | net/8021q/vlan.c | 153 | ||||
| -rw-r--r-- | net/8021q/vlan.h | 13 | ||||
| -rw-r--r-- | net/8021q/vlan_dev.c | 142 |
3 files changed, 109 insertions, 199 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index de78c9dd713..3678f071993 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -278,43 +278,16 @@ static int unregister_vlan_dev(struct net_device *real_dev, return ret; } -static int unregister_vlan_device(const char *vlan_IF_name) +static int unregister_vlan_device(struct net_device *dev) { - struct net_device *dev = NULL; int ret; + ret = unregister_vlan_dev(VLAN_DEV_INFO(dev)->real_dev, + VLAN_DEV_INFO(dev)->vlan_id); + unregister_netdevice(dev); - dev = dev_get_by_name(vlan_IF_name); - ret = -EINVAL; - if (dev) { - if (dev->priv_flags & IFF_802_1Q_VLAN) { - rtnl_lock(); - - ret = unregister_vlan_dev(VLAN_DEV_INFO(dev)->real_dev, - VLAN_DEV_INFO(dev)->vlan_id); - - dev_put(dev); - unregister_netdevice(dev); - - rtnl_unlock(); - - if (ret == 1) - ret = 0; - } else { - printk(VLAN_ERR - "%s: ERROR: Tried to remove a non-vlan device " - "with VLAN code, name: %s priv_flags: %hX\n", - __FUNCTION__, dev->name, dev->priv_flags); - dev_put(dev); - ret = -EPERM; - } - } else { -#ifdef VLAN_DEBUG - printk(VLAN_DBG "%s: WARNING: Could not find dev.\n", __FUNCTION__); -#endif - ret = -EINVAL; - } - + if (ret == 1) + ret = 0; return ret; } @@ -378,12 +351,11 @@ static struct lock_class_key vlan_netdev_xmit_lock_key; * Returns the device that was created, or NULL if there was * an error of some kind. */ -static struct net_device *register_vlan_device(const char *eth_IF_name, +static struct net_device *register_vlan_device(struct net_device *real_dev, unsigned short VLAN_ID) { struct vlan_group *grp; struct net_device *new_dev; - struct net_device *real_dev; /* the ethernet device */ char name[IFNAMSIZ]; int i; @@ -395,46 +367,36 @@ static struct net_device *register_vlan_device(const char *eth_IF_name, if (VLAN_ID >= VLAN_VID_MASK) goto out_ret_null; - /* find the device relating to eth_IF_name. */ - real_dev = dev_get_by_name(eth_IF_name); - if (!real_dev) - goto out_ret_null; - if (real_dev->features & NETIF_F_VLAN_CHALLENGED) { printk(VLAN_DBG "%s: VLANs not supported on %s.\n", __FUNCTION__, real_dev->name); - goto out_put_dev; + goto out_ret_null; } if ((real_dev->features & NETIF_F_HW_VLAN_RX) && !real_dev->vlan_rx_register) { printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n", __FUNCTION__, real_dev->name); - goto out_put_dev; + goto out_ret_null; } if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) && (!real_dev->vlan_rx_add_vid || !real_dev->vlan_rx_kill_vid)) { printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n", __FUNCTION__, real_dev->name); - goto out_put_dev; + goto out_ret_null; } - /* From this point on, all the data structures must remain - * consistent. - */ - rtnl_lock(); - /* The real device must be up and operating in order to * assosciate a VLAN device with it. */ if (!(real_dev->flags & IFF_UP)) - goto out_unlock; + goto out_ret_null; if (__find_vlan_dev(real_dev, VLAN_ID) != NULL) { /* was already registered. */ printk(VLAN_DBG "%s: ALREADY had VLAN registered\n", __FUNCTION__); - goto out_unlock; + goto out_ret_null; } /* Gotta set up the fields for the device. */ @@ -471,7 +433,7 @@ static struct net_device *register_vlan_device(const char *eth_IF_name, vlan_setup); if (new_dev == NULL) - goto out_unlock; + goto out_ret_null; #ifdef VLAN_DEBUG printk(VLAN_DBG "Allocated new name -:%s:-\n", new_dev->name); @@ -577,9 +539,8 @@ static struct net_device *register_vlan_device(const char *eth_IF_name, if (real_dev->features & NETIF_F_HW_VLAN_FILTER) real_dev->vlan_rx_add_vid(real_dev, VLAN_ID); - rtnl_unlock(); - - + /* Account for reference in struct vlan_dev_info */ + dev_hold(real_dev); #ifdef VLAN_DEBUG printk(VLAN_DBG "Allocated new device successfully, returning.\n"); #endif @@ -590,17 +551,11 @@ out_free_arrays: out_free_unregister: unregister_netdev(new_dev); - goto out_unlock; + goto out_ret_null; out_free_newdev: free_netdev(new_dev); -out_unlock: - rtnl_unlock(); - -out_put_dev: - dev_put(real_dev); - out_ret_null: return NULL; } @@ -693,9 +648,10 @@ out: */ static int vlan_ioctl_handler(void __user *arg) { - int err = 0; + int err; unsigned short vid = 0; struct vlan_ioctl_args args; + struct net_device *dev = NULL; if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args))) return -EFAULT; @@ -708,35 +664,61 @@ static int vlan_ioctl_handler(void __user *arg) printk(VLAN_DBG "%s: args.cmd: %x\n", __FUNCTION__, args.cmd); #endif + rtnl_lock(); + switch (args.cmd) { case SET_VLAN_INGRESS_PRIORITY_CMD: + case SET_VLAN_EGRESS_PRIORITY_CMD: + case SET_VLAN_FLAG_CMD: + case ADD_VLAN_CMD: + case DEL_VLAN_CMD: + case GET_VLAN_REALDEV_NAME_CMD: + case GET_VLAN_VID_CMD: + err = -ENODEV; + dev = __dev_get_by_name(args.device1); + if (!dev) + goto out; + + err = -EINVAL; + if (args.cmd != ADD_VLAN_CMD && + !(dev->priv_flags & IFF_802_1Q_VLAN)) + goto out; + } + + switch (args.cmd) { + case SET_VLAN_INGRESS_PRIORITY_CMD: + err = -EPERM; if (!capable(CAP_NET_ADMIN)) - return -EPERM; - err = vlan_dev_set_ingress_priority(args.device1, - args.u.skb_priority, - args.vlan_qos); + break; + vlan_dev_set_ingress_priority(dev, + args.u.skb_priority, + args.vlan_qos); break; case SET_VLAN_EGRESS_PRIORITY_CMD: + err = -EPERM; if (!capable(CAP_NET_ADMIN)) - return -EPERM; - err = vlan_dev_set_egress_priority(args.device1, + break; + err = vlan_dev_set_egress_priority(dev, args.u.skb_priority, args.vlan_qos); break; case SET_VLAN_FLAG_CMD: + err = -EPERM; if (!capable(CAP_NET_ADMIN)) - return -EPERM; - err = vlan_dev_set_vlan_flag(args.device1, + break; + err = vlan_dev_set_vlan_flag(dev, args.u.flag, args.vlan_qos); break; case SET_VLAN_NAME_TYPE_CMD: + err = -EPERM; if (!capable(CAP_NET_ADMIN)) return -EPERM; - if (args.u.name_type < VLAN_NAME_TYPE_HIGHEST) { + if ((args.u.name_type >= 0) && + (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) { vlan_name_type = args.u.name_type; err = 0; } else { @@ -745,13 +727,10 @@ static int vlan_ioctl_handler(void __user *arg) break; case ADD_VLAN_CMD: + err = -EPERM; if (!capable(CAP_NET_ADMIN)) - return -EPERM; - /* we have been given the name of the Ethernet Device we want to - * talk to: args.dev1 We also have the - * VLAN ID: args.u.VID - */ - if (register_vlan_device(args.device1, args.u.VID)) { + break; + if (register_vlan_device(dev, args.u.VID)) { err = 0; } else { err = -EINVAL; @@ -759,12 +738,10 @@ static int vlan_ioctl_handler(void __user *arg) break; case DEL_VLAN_CMD: + err = -EPERM; if (!capable(CAP_NET_ADMIN)) - return -EPERM; - /* Here, the args.dev1 is the actual VLAN we want - * to get rid of. - */ - err = unregister_vlan_device(args.device1); + break; + err = unregister_vlan_device(dev); break; case GET_VLAN_INGRESS_PRIORITY_CMD: @@ -788,9 +765,7 @@ static int vlan_ioctl_handler(void __user *arg) err = -EINVAL; break; case GET_VLAN_REALDEV_NAME_CMD: - err = vlan_dev_get_realdev_name(args.device1, args.u.device2); - if (err) - goto out; + vlan_dev_get_realdev_name(dev, args.u.device2); if (copy_to_user(arg, &args, sizeof(struct vlan_ioctl_args))) { err = -EFAULT; @@ -798,9 +773,7 @@ static int vlan_ioctl_handler(void __user *arg) break; case GET_VLAN_VID_CMD: - err = vlan_dev_get_vid(args.device1, &vid); - if (err) - goto out; + vlan_dev_get_vid(dev, &vid); args.u.VID = vid; if (copy_to_user(arg, &args, sizeof(struct vlan_ioctl_args))) { @@ -812,9 +785,11 @@ static int vlan_ioctl_handler(void __user *arg) /* pass on to underlying device instead?? */ printk(VLAN_DBG "%s: Unknown VLAN CMD: %x \n", __FUNCTION__, args.cmd); - return -EINVAL; + err = -EINVAL; + break; } out: + rtnl_unlock(); return err; } diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h index 1976cdba8f7..b83739017e9 100644 --- a/net/8021q/vlan.h +++ b/net/8021q/vlan.h @@ -62,11 +62,14 @@ int vlan_dev_set_mac_address(struct net_device *dev, void* addr); int vlan_dev_open(struct net_device* dev); int vlan_dev_stop(struct net_device* dev); int vlan_dev_ioctl(struct net_device* dev, struct ifreq *ifr, int cmd); -int vlan_dev_set_ingress_priority(char* dev_name, __u32 skb_prio, short vlan_prio); -int vlan_dev_set_egress_priority(char* dev_name, __u32 skb_prio, short vlan_prio); -int vlan_dev_set_vlan_flag(char* dev_name, __u32 flag, short flag_val); -int vlan_dev_get_realdev_name(const char* dev_name, char* result); -int vlan_dev_get_vid(const char* dev_name, unsigned short* result); +void vlan_dev_set_ingress_priority(const struct net_device *dev, + u32 skb_prio, short vlan_prio); +int vlan_dev_set_egress_priority(const struct net_device *dev, + u32 skb_prio, short vlan_prio); +int vlan_dev_set_vlan_flag(const struct net_device *dev, + u32 flag, short flag_val); +void vlan_dev_get_realdev_name(const struct net_device *dev, char *result); +void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result); void vlan_dev_set_multicast_list(struct net_device *vlan_dev); #endif /* !(__BEN_VLAN_802_1Q_INC__) */ diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index ec46084f44b..05a23601f67 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -534,136 +534,68 @@ int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) return 0; } -int vlan_dev_set_ingress_priority(char *dev_name, __u32 skb_prio, short vlan_prio) +void vlan_dev_set_ingress_priority(const struct net_device *dev, + u32 skb_prio, short vlan_prio) { - struct net_device *dev = dev_get_by_name(dev_name); - - if (dev) { - if (dev->priv_flags & IFF_802_1Q_VLAN) { - /* see if a priority mapping exists.. */ - VLAN_DEV_INFO(dev)->ingress_priority_map[vlan_prio & 0x7] = skb_prio; - dev_put(dev); - return 0; - } - - dev_put(dev); - } - return -EINVAL; + VLAN_DEV_INFO(dev)->ingress_priority_map[vlan_prio & 0x7] = skb_prio; } -int vlan_dev_set_egress_priority(char *dev_name, __u32 skb_prio, short vlan_prio) +int vlan_dev_set_egress_priority(const struct net_device *dev, + u32 skb_prio, short vlan_prio) { - struct net_device *dev = dev_get_by_name(dev_name); struct vlan_priority_tci_mapping *mp = NULL; struct vlan_priority_tci_mapping *np; - if (dev) { - if (dev->priv_flags & IFF_802_1Q_VLAN) { - /* See if a priority mapping exists.. */ - mp = VLAN_DEV_INFO(dev)->egress_priority_map[skb_prio & 0xF]; - while (mp) { - if (mp->priority == skb_prio) { - mp->vlan_qos = ((vlan_prio << 13) & 0xE000); - dev_put(dev); - return 0; - } - mp = mp->next; - } - - /* Create a new mapping then. */ - mp = VLAN_DEV_INFO(dev)->egress_priority_map[skb_prio & 0xF]; - np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); - if (np) { - np->next = mp; - np->priority = skb_prio; - np->vlan_qos = ((vlan_prio << 13) & 0xE000); - VLAN_DEV_INFO(dev)->egress_priority_map[skb_prio & 0xF] = np; - dev_put(dev); - return 0; - } else { - dev_put(dev); - return -ENOBUFS; - } + /* See if a priority mapping exists.. */ + mp = VLAN_DEV_INFO(dev)->egress_priority_map[skb_prio & 0xF]; + while (mp) { + if (mp->priority == skb_prio) { + mp->vlan_qos = ((vlan_prio << 13) & 0xE000); + return 0; } - dev_put(dev); + mp = mp->next; } - return -EINVAL; + + /* Create a new mapping then. */ + mp = VLAN_DEV_INFO(dev)->egress_priority_map[skb_prio & 0xF]; + np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); + if (!np) + return -ENOBUFS; + + np->next = mp; + np->priority = skb_prio; + np->vlan_qos = ((vlan_prio << 13) & 0xE000); + VLAN_DEV_INFO(dev)->egress_priority_map[skb_prio & 0xF] = np; + return 0; } /* Flags are defined in the vlan_dev_info class in include/linux/if_vlan.h file. */ -int vlan_dev_set_vlan_flag(char *dev_name, __u32 flag, short flag_val) +int vlan_dev_set_vlan_flag(const struct net_device *dev, + u32 flag, short flag_val) { - struct net_device *dev = dev_get_by_name(dev_name); - - if (dev) { - if (dev->priv_flags & IFF_802_1Q_VLAN) { - /* verify flag is supported */ - if (flag == 1) { - if (flag_val) { - VLAN_DEV_INFO(dev)->flags |= 1; - } else { - VLAN_DEV_INFO(dev)->flags &= ~1; - } - dev_put(dev); - return 0; - } else { - printk(KERN_ERR "%s: flag %i is not valid.\n", - __FUNCTION__, (int)(flag)); - dev_put(dev); - return -EINVAL; - } + /* verify flag is supported */ + if (flag == 1) { + if (flag_val) { + VLAN_DEV_INFO(dev)->flags |= 1; } else { - printk(KERN_ERR - "%s: %s is not a vlan device, priv_flags: %hX.\n", - __FUNCTION__, dev->name, dev->priv_flags); - dev_put(dev); + VLAN_DEV_INFO(dev)->flags &= ~1; } - } else { - printk(KERN_ERR "%s: Could not find device: %s\n", - __FUNCTION__, dev_name); + return 0; } - + printk(KERN_ERR "%s: flag %i is not valid.\n", __FUNCTION__, flag); return -EINVAL; } - -int vlan_dev_get_realdev_name(const char *dev_name, char* result) +void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) { - struct net_device *dev = dev_get_by_name(dev_name); - int rv = 0; - if (dev) { - if (dev->priv_flags & IFF_802_1Q_VLAN) { - strncpy(result, VLAN_DEV_INFO(dev)->real_dev->name, 23); - rv = 0; - } else { - rv = -EINVAL; - } - dev_put(dev); - } else { - rv = -ENODEV; - } - return rv; + strncpy(result, VLAN_DEV_INFO(dev)->real_dev->name, 23); } -int vlan_dev_get_vid(const char *dev_name, unsigned short* result) +void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result) { - struct net_device *dev = dev_get_by_name(dev_name); - int rv = 0; - if (dev) { - if (dev->priv_flags & IFF_802_1Q_VLAN) { - *result = VLAN_DEV_INFO(dev)->vlan_id; - rv = 0; - } else { - rv = -EINVAL; - } - dev_put(dev); - } else { - rv = -ENODEV; - } - return rv; + *result = VLAN_DEV_INFO(dev)->vlan_id; } - int vlan_dev_set_mac_address(struct net_device *dev, void *addr_struct_p) { struct sockaddr *addr = (struct sockaddr *)(addr_struct_p); |