mirror of https://gitee.com/openkylin/linux.git
208 lines
5.2 KiB
C
208 lines
5.2 KiB
C
/*
|
|
* Copyright (c) 2004 Topspin Communications. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
#include <asm/uaccess.h>
|
|
|
|
#include "ipoib.h"
|
|
|
|
static ssize_t show_parent(struct device *d, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct net_device *dev = to_net_dev(d);
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
return sprintf(buf, "%s\n", priv->parent->name);
|
|
}
|
|
static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL);
|
|
|
|
int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
|
|
u16 pkey, int type)
|
|
{
|
|
int result;
|
|
|
|
priv->max_ib_mtu = ppriv->max_ib_mtu;
|
|
/* MTU will be reset when mcast join happens */
|
|
priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu);
|
|
priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu;
|
|
set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
|
|
|
|
result = ipoib_set_dev_features(priv, ppriv->ca);
|
|
if (result)
|
|
goto err;
|
|
|
|
priv->pkey = pkey;
|
|
|
|
memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN);
|
|
priv->dev->broadcast[8] = pkey >> 8;
|
|
priv->dev->broadcast[9] = pkey & 0xff;
|
|
|
|
result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port);
|
|
if (result < 0) {
|
|
ipoib_warn(ppriv, "failed to initialize subinterface: "
|
|
"device %s, port %d",
|
|
ppriv->ca->name, ppriv->port);
|
|
goto err;
|
|
}
|
|
|
|
result = register_netdevice(priv->dev);
|
|
if (result) {
|
|
ipoib_warn(priv, "failed to initialize; error %i", result);
|
|
goto register_failed;
|
|
}
|
|
|
|
priv->parent = ppriv->dev;
|
|
|
|
ipoib_create_debug_files(priv->dev);
|
|
|
|
/* RTNL childs don't need proprietary sysfs entries */
|
|
if (type == IPOIB_LEGACY_CHILD) {
|
|
if (ipoib_cm_add_mode_attr(priv->dev))
|
|
goto sysfs_failed;
|
|
if (ipoib_add_pkey_attr(priv->dev))
|
|
goto sysfs_failed;
|
|
if (ipoib_add_umcast_attr(priv->dev))
|
|
goto sysfs_failed;
|
|
|
|
if (device_create_file(&priv->dev->dev, &dev_attr_parent))
|
|
goto sysfs_failed;
|
|
}
|
|
|
|
priv->child_type = type;
|
|
priv->dev->iflink = ppriv->dev->ifindex;
|
|
list_add_tail(&priv->list, &ppriv->child_intfs);
|
|
|
|
return 0;
|
|
|
|
sysfs_failed:
|
|
result = -ENOMEM;
|
|
ipoib_delete_debug_files(priv->dev);
|
|
unregister_netdevice(priv->dev);
|
|
|
|
register_failed:
|
|
ipoib_dev_cleanup(priv->dev);
|
|
|
|
err:
|
|
return result;
|
|
}
|
|
|
|
int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
|
|
{
|
|
struct ipoib_dev_priv *ppriv, *priv;
|
|
char intf_name[IFNAMSIZ];
|
|
struct ipoib_dev_priv *tpriv;
|
|
int result;
|
|
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
|
|
ppriv = netdev_priv(pdev);
|
|
|
|
snprintf(intf_name, sizeof intf_name, "%s.%04x",
|
|
ppriv->dev->name, pkey);
|
|
priv = ipoib_intf_alloc(intf_name);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
if (!rtnl_trylock())
|
|
return restart_syscall();
|
|
|
|
mutex_lock(&ppriv->vlan_mutex);
|
|
|
|
/*
|
|
* First ensure this isn't a duplicate. We check the parent device and
|
|
* then all of the legacy child interfaces to make sure the Pkey
|
|
* doesn't match.
|
|
*/
|
|
if (ppriv->pkey == pkey) {
|
|
result = -ENOTUNIQ;
|
|
goto out;
|
|
}
|
|
|
|
list_for_each_entry(tpriv, &ppriv->child_intfs, list) {
|
|
if (tpriv->pkey == pkey &&
|
|
tpriv->child_type == IPOIB_LEGACY_CHILD) {
|
|
result = -ENOTUNIQ;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD);
|
|
|
|
out:
|
|
mutex_unlock(&ppriv->vlan_mutex);
|
|
|
|
if (result)
|
|
free_netdev(priv->dev);
|
|
|
|
rtnl_unlock();
|
|
|
|
return result;
|
|
}
|
|
|
|
int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
|
|
{
|
|
struct ipoib_dev_priv *ppriv, *priv, *tpriv;
|
|
struct net_device *dev = NULL;
|
|
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
|
|
ppriv = netdev_priv(pdev);
|
|
|
|
if (!rtnl_trylock())
|
|
return restart_syscall();
|
|
mutex_lock(&ppriv->vlan_mutex);
|
|
list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
|
|
if (priv->pkey == pkey &&
|
|
priv->child_type == IPOIB_LEGACY_CHILD) {
|
|
unregister_netdevice(priv->dev);
|
|
list_del(&priv->list);
|
|
dev = priv->dev;
|
|
break;
|
|
}
|
|
}
|
|
mutex_unlock(&ppriv->vlan_mutex);
|
|
rtnl_unlock();
|
|
|
|
if (dev) {
|
|
free_netdev(dev);
|
|
return 0;
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|