From: Ben Greear <greearb@candelatech.com>
To: "'netdev@oss.sgi.com'" <netdev@oss.sgi.com>
Subject: VLAN patch for 2.4.21
Date: Tue, 05 Aug 2003 17:27:14 -0700 [thread overview]
Message-ID: <3F304B62.3010505@candelatech.com> (raw)
Here is a patch that adds a few new IOCTL options (not new IOCTLs per se)
for the 802.1Q VLANs. One ioctl allows one to get the VID for a device by
the interface name. A second gets the name of the underlying device for
the VLAN device. Tested on x86 and PPC.
Comments welcome!
Thanks,
Ben
--- linux-2.4.21/net/8021q/vlan_dev.c 2003-06-13 07:51:39.000000000 -0700
+++ linux-2.4.21.amds/net/8021q/vlan_dev.c 2003-07-30 16:20:41.000000000 -0700
@@ -1,4 +1,4 @@
-/*
+/* -*- linux-c -*-
* INET 802.1Q VLAN
* Ethernet-type device handling.
*
@@ -632,6 +632,59 @@
return -EINVAL;
}
+
+int vlan_dev_get_realdev_name(const char *dev_name, 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);
+ dev_put(dev);
+ rv = 0;
+ } else {
+ printk(KERN_ERR
+ "%s: %s is not a vlan device, priv_flags: %hX.\n",
+ __FUNCTION__, dev->name, dev->priv_flags);
+ dev_put(dev);
+ rv = -EINVAL;
+ }
+ } else {
+ printk(KERN_ERR "%s: Could not find device: %s\n",
+ __FUNCTION__, dev_name);
+ rv = -ENODEV;
+ }
+
+ return rv;
+}
+
+int vlan_dev_get_vid(const char *dev_name, 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;
+ dev_put(dev);
+ rv = 0;
+ } else {
+ printk(KERN_ERR
+ "%s: %s is not a vlan device, priv_flags: %hX.\n",
+ __FUNCTION__, dev->name, dev->priv_flags);
+ dev_put(dev);
+ rv = -EINVAL;
+ }
+ } else {
+ printk(KERN_ERR "%s: Could not find device: %s\n",
+ __FUNCTION__, dev_name);
+ rv = -ENODEV;
+ }
+
+ return rv;
+}
+
int vlan_dev_set_mac_address(struct net_device *dev, void *addr_struct_p)
{
struct sockaddr *addr = (struct sockaddr *)(addr_struct_p);
--- linux-2.4.21/net/8021q/vlan.c 2003-06-13 07:51:39.000000000 -0700
+++ linux-2.4.21.amds/net/8021q/vlan.c 2003-07-30 16:20:41.000000000 -0700
@@ -1,4 +1,4 @@
-/*
+/* -*- linux-c -*-
* INET 802.1Q VLAN
* Ethernet-type device handling.
*
@@ -655,12 +655,9 @@
int vlan_ioctl_handler(unsigned long arg)
{
int err = 0;
+ unsigned short vid = 0;
struct vlan_ioctl_args args;
- /* everything here needs root permissions, except aguably the
- * hack ioctls for sending packets. However, I know _I_ don't
- * want users running that on my network! --BLG
- */
if (!capable(CAP_NET_ADMIN))
return -EPERM;
@@ -678,24 +675,32 @@
switch (args.cmd) {
case SET_VLAN_INGRESS_PRIORITY_CMD:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
err = vlan_dev_set_ingress_priority(args.device1,
args.u.skb_priority,
args.vlan_qos);
break;
case SET_VLAN_EGRESS_PRIORITY_CMD:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
err = vlan_dev_set_egress_priority(args.device1,
args.u.skb_priority,
args.vlan_qos);
break;
case SET_VLAN_FLAG_CMD:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
err = vlan_dev_set_vlan_flag(args.device1,
args.u.flag,
args.vlan_qos);
break;
case SET_VLAN_NAME_TYPE_CMD:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
if ((args.u.name_type >= 0) &&
(args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) {
vlan_name_type = args.u.name_type;
@@ -705,17 +710,9 @@
}
break;
- /* TODO: Figure out how to pass info back...
- case GET_VLAN_INGRESS_PRIORITY_IOCTL:
- err = vlan_dev_get_ingress_priority(args);
- break;
-
- case GET_VLAN_EGRESS_PRIORITY_IOCTL:
- err = vlan_dev_get_egress_priority(args);
- break;
- */
-
case ADD_VLAN_CMD:
+ 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
@@ -728,12 +725,53 @@
break;
case DEL_VLAN_CMD:
+ 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;
+ case GET_VLAN_INGRESS_PRIORITY_CMD:
+ /* TODO: Implement
+ err = vlan_dev_get_ingress_priority(args);
+ if (copy_to_user((void*)arg, &args,
+ sizeof(struct vlan_ioctl_args))) {
+ err = -EFAULT;
+ }
+ */
+ err = -EINVAL;
+ break;
+
+ case GET_VLAN_EGRESS_PRIORITY_CMD:
+ /* TODO: Implement
+ err = vlan_dev_get_egress_priority(args.device1, &(args.args);
+ if (copy_to_user((void*)arg, &args,
+ sizeof(struct vlan_ioctl_args))) {
+ err = -EFAULT;
+ }
+ */
+ err = -EINVAL;
+ break;
+
+ case GET_VLAN_REALDEV_NAME_CMD:
+ err = vlan_dev_get_realdev_name(args.device1, args.u.device2);
+ if (copy_to_user((void*)arg, &args,
+ sizeof(struct vlan_ioctl_args))) {
+ err = -EFAULT;
+ }
+ break;
+
+ case GET_VLAN_VID_CMD:
+ err = vlan_dev_get_vid(args.device1, &vid);
+ args.u.VID = vid;
+ if (copy_to_user((void*)arg, &args,
+ sizeof(struct vlan_ioctl_args))) {
+ err = -EFAULT;
+ }
+ break;
+
default:
/* pass on to underlying device instead?? */
printk(VLAN_DBG "%s: Unknown VLAN CMD: %x \n",
--- linux-2.4.21/net/8021q/vlan.h 2002-08-02 17:39:46.000000000 -0700
+++ linux-2.4.21.amds/net/8021q/vlan.h 2003-07-30 16:30:53.000000000 -0700
@@ -72,6 +72,8 @@
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_multicast_list(struct net_device *vlan_dev);
#endif /* !(__BEN_VLAN_802_1Q_INC__) */
--- linux-2.4.21/include/linux/if_vlan.h 2002-11-28 15:53:15.000000000 -0800
+++ linux-2.4.21.amds/include/linux/if_vlan.h 2003-07-30 16:29:30.000000000 -0700
@@ -212,7 +212,9 @@
GET_VLAN_INGRESS_PRIORITY_CMD,
GET_VLAN_EGRESS_PRIORITY_CMD,
SET_VLAN_NAME_TYPE_CMD,
- SET_VLAN_FLAG_CMD
+ SET_VLAN_FLAG_CMD,
+ GET_VLAN_REALDEV_NAME_CMD, /* If this works, you know it's a VLAN device, btw */
+ GET_VLAN_VID_CMD /* Get the VID of this VLAN (specified by name) */
};
enum vlan_name_types {
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next reply other threads:[~2003-08-06 0:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-06 0:27 Ben Greear [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-08-07 6:22 VLAN patch for 2.4.21 Hen, Shmulik
2003-08-07 7:28 ` Ben Greear
2003-08-07 7:30 ` David S. Miller
2003-08-07 10:22 Hen, Shmulik
2003-08-07 15:49 ` Ben Greear
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