11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Copyright (c) 2004 Topspin Communications. All rights reserved. 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * This software is available to you under a choice of one of two 51da177e4SLinus Torvalds * licenses. You may choose to be licensed under the terms of the GNU 61da177e4SLinus Torvalds * General Public License (GPL) Version 2, available from the file 71da177e4SLinus Torvalds * COPYING in the main directory of this source tree, or the 81da177e4SLinus Torvalds * OpenIB.org BSD license below: 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or 111da177e4SLinus Torvalds * without modification, are permitted provided that the following 121da177e4SLinus Torvalds * conditions are met: 131da177e4SLinus Torvalds * 141da177e4SLinus Torvalds * - Redistributions of source code must retain the above 151da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 161da177e4SLinus Torvalds * disclaimer. 171da177e4SLinus Torvalds * 181da177e4SLinus Torvalds * - Redistributions in binary form must reproduce the above 191da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 201da177e4SLinus Torvalds * disclaimer in the documentation and/or other materials 211da177e4SLinus Torvalds * provided with the distribution. 221da177e4SLinus Torvalds * 231da177e4SLinus Torvalds * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 241da177e4SLinus Torvalds * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 251da177e4SLinus Torvalds * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 261da177e4SLinus Torvalds * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 271da177e4SLinus Torvalds * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 281da177e4SLinus Torvalds * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 291da177e4SLinus Torvalds * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 301da177e4SLinus Torvalds * SOFTWARE. 311da177e4SLinus Torvalds */ 321da177e4SLinus Torvalds 331da177e4SLinus Torvalds #include <linux/module.h> 34174cd4b1SIngo Molnar #include <linux/sched/signal.h> 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds #include <linux/init.h> 371da177e4SLinus Torvalds #include <linux/seq_file.h> 381da177e4SLinus Torvalds 397c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds #include "ipoib.h" 421da177e4SLinus Torvalds 4343cb76d9SGreg Kroah-Hartman static ssize_t show_parent(struct device *d, struct device_attribute *attr, 4443cb76d9SGreg Kroah-Hartman char *buf) 451da177e4SLinus Torvalds { 4643cb76d9SGreg Kroah-Hartman struct net_device *dev = to_net_dev(d); 47c1048affSErez Shitrit struct ipoib_dev_priv *priv = ipoib_priv(dev); 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds return sprintf(buf, "%s\n", priv->parent->name); 501da177e4SLinus Torvalds } 5143cb76d9SGreg Kroah-Hartman static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL); 521da177e4SLinus Torvalds 539baa0b03SOr Gerlitz int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 549baa0b03SOr Gerlitz u16 pkey, int type) 551da177e4SLinus Torvalds { 561da177e4SLinus Torvalds int result; 571da177e4SLinus Torvalds 58bc7b3a36SShirley Ma priv->max_ib_mtu = ppriv->max_ib_mtu; 59b4132efaSEli Cohen /* MTU will be reset when mcast join happens */ 60b4132efaSEli Cohen priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu); 61b4132efaSEli Cohen priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu; 622c153959SErez Shitrit priv->parent = ppriv->dev; 631da177e4SLinus Torvalds set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags); 641da177e4SLinus Torvalds 65f7534f45SZhu Yanjun ipoib_set_dev_features(priv, ppriv->ca); 6683bb63f6SOr Gerlitz 671da177e4SLinus Torvalds priv->pkey = pkey; 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN); 70492a7e67SMark Bloch memcpy(&priv->local_gid, &ppriv->local_gid, sizeof(priv->local_gid)); 71492a7e67SMark Bloch set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); 721da177e4SLinus Torvalds priv->dev->broadcast[8] = pkey >> 8; 731da177e4SLinus Torvalds priv->dev->broadcast[9] = pkey & 0xff; 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port); 761da177e4SLinus Torvalds if (result < 0) { 771da177e4SLinus Torvalds ipoib_warn(ppriv, "failed to initialize subinterface: " 781da177e4SLinus Torvalds "device %s, port %d", 791da177e4SLinus Torvalds ppriv->ca->name, ppriv->port); 80edb5abb1SRoland Dreier goto err; 811da177e4SLinus Torvalds } 821da177e4SLinus Torvalds 83cbbe1efaSRoland Dreier result = register_netdevice(priv->dev); 841da177e4SLinus Torvalds if (result) { 851da177e4SLinus Torvalds ipoib_warn(priv, "failed to initialize; error %i", result); 861da177e4SLinus Torvalds goto register_failed; 871da177e4SLinus Torvalds } 881da177e4SLinus Torvalds 89862096a8SOr Gerlitz /* RTNL childs don't need proprietary sysfs entries */ 90862096a8SOr Gerlitz if (type == IPOIB_LEGACY_CHILD) { 91839fcabaSMichael S. Tsirkin if (ipoib_cm_add_mode_attr(priv->dev)) 92839fcabaSMichael S. Tsirkin goto sysfs_failed; 931da177e4SLinus Torvalds if (ipoib_add_pkey_attr(priv->dev)) 941da177e4SLinus Torvalds goto sysfs_failed; 95335a64a5SOr Gerlitz if (ipoib_add_umcast_attr(priv->dev)) 96335a64a5SOr Gerlitz goto sysfs_failed; 971da177e4SLinus Torvalds 9843cb76d9SGreg Kroah-Hartman if (device_create_file(&priv->dev->dev, &dev_attr_parent)) 991da177e4SLinus Torvalds goto sysfs_failed; 100862096a8SOr Gerlitz } 1011da177e4SLinus Torvalds 1029baa0b03SOr Gerlitz priv->child_type = type; 1031da177e4SLinus Torvalds list_add_tail(&priv->list, &ppriv->child_intfs); 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds return 0; 1061da177e4SLinus Torvalds 1071da177e4SLinus Torvalds sysfs_failed: 1089baa0b03SOr Gerlitz result = -ENOMEM; 109cbbe1efaSRoland Dreier unregister_netdevice(priv->dev); 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds register_failed: 1121da177e4SLinus Torvalds ipoib_dev_cleanup(priv->dev); 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds err: 1159baa0b03SOr Gerlitz return result; 1169baa0b03SOr Gerlitz } 1179baa0b03SOr Gerlitz 1189baa0b03SOr Gerlitz int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) 1199baa0b03SOr Gerlitz { 1209baa0b03SOr Gerlitz struct ipoib_dev_priv *ppriv, *priv; 1219baa0b03SOr Gerlitz char intf_name[IFNAMSIZ]; 1229baa0b03SOr Gerlitz struct ipoib_dev_priv *tpriv; 1239baa0b03SOr Gerlitz int result; 1249baa0b03SOr Gerlitz 1259baa0b03SOr Gerlitz if (!capable(CAP_NET_ADMIN)) 1269baa0b03SOr Gerlitz return -EPERM; 1279baa0b03SOr Gerlitz 128cd565b4bSErez Shitrit ppriv = ipoib_priv(pdev); 1299baa0b03SOr Gerlitz 130198b12f7SErez Shitrit if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags)) 131198b12f7SErez Shitrit return -EPERM; 132198b12f7SErez Shitrit 133b1b63970SKamal Heib snprintf(intf_name, sizeof(intf_name), "%s.%04x", 1349baa0b03SOr Gerlitz ppriv->dev->name, pkey); 135cd565b4bSErez Shitrit 13669956d83SErez Shitrit if (!mutex_trylock(&ppriv->sysfs_mutex)) 1374542d66bSFeras Daoud return restart_syscall(); 1384542d66bSFeras Daoud 13969956d83SErez Shitrit if (!rtnl_trylock()) { 14069956d83SErez Shitrit mutex_unlock(&ppriv->sysfs_mutex); 14169956d83SErez Shitrit return restart_syscall(); 14269956d83SErez Shitrit } 14369956d83SErez Shitrit 1449c6f42e9SShalom Lagziel if (!down_write_trylock(&ppriv->vlan_rwsem)) { 14569956d83SErez Shitrit rtnl_unlock(); 14669956d83SErez Shitrit mutex_unlock(&ppriv->sysfs_mutex); 1479c6f42e9SShalom Lagziel return restart_syscall(); 14869956d83SErez Shitrit } 1499baa0b03SOr Gerlitz 1509c6f42e9SShalom Lagziel priv = ipoib_intf_alloc(ppriv->ca, ppriv->port, intf_name); 1519c6f42e9SShalom Lagziel if (!priv) { 1529c6f42e9SShalom Lagziel result = -ENOMEM; 1539c6f42e9SShalom Lagziel goto out; 1549c6f42e9SShalom Lagziel } 1559baa0b03SOr Gerlitz 1569baa0b03SOr Gerlitz /* 1579baa0b03SOr Gerlitz * First ensure this isn't a duplicate. We check the parent device and 1589baa0b03SOr Gerlitz * then all of the legacy child interfaces to make sure the Pkey 1599baa0b03SOr Gerlitz * doesn't match. 1609baa0b03SOr Gerlitz */ 1619baa0b03SOr Gerlitz if (ppriv->pkey == pkey) { 1629baa0b03SOr Gerlitz result = -ENOTUNIQ; 1639baa0b03SOr Gerlitz goto out; 1649baa0b03SOr Gerlitz } 1659baa0b03SOr Gerlitz 1669baa0b03SOr Gerlitz list_for_each_entry(tpriv, &ppriv->child_intfs, list) { 1679baa0b03SOr Gerlitz if (tpriv->pkey == pkey && 1689baa0b03SOr Gerlitz tpriv->child_type == IPOIB_LEGACY_CHILD) { 1699baa0b03SOr Gerlitz result = -ENOTUNIQ; 1709baa0b03SOr Gerlitz goto out; 1719baa0b03SOr Gerlitz } 1729baa0b03SOr Gerlitz } 1739baa0b03SOr Gerlitz 1749baa0b03SOr Gerlitz result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD); 1759baa0b03SOr Gerlitz 1769baa0b03SOr Gerlitz out: 177f47944ccSErez Shitrit up_write(&ppriv->vlan_rwsem); 17889a3987aSFeras Daoud rtnl_unlock(); 17969956d83SErez Shitrit mutex_unlock(&ppriv->sysfs_mutex); 18089a3987aSFeras Daoud 1819c6f42e9SShalom Lagziel if (result && priv) { 1827c9d9662SAlex Vesker struct rdma_netdev *rn; 1837c9d9662SAlex Vesker 1847c9d9662SAlex Vesker rn = netdev_priv(priv->dev); 1857c9d9662SAlex Vesker rn->free_rdma_netdev(priv->dev); 186ab156afdSAlex Vesker kfree(priv); 187ab156afdSAlex Vesker } 188edb5abb1SRoland Dreier 1891da177e4SLinus Torvalds return result; 1901da177e4SLinus Torvalds } 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) 1931da177e4SLinus Torvalds { 1941da177e4SLinus Torvalds struct ipoib_dev_priv *ppriv, *priv, *tpriv; 195edb5abb1SRoland Dreier struct net_device *dev = NULL; 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 1981da177e4SLinus Torvalds return -EPERM; 1991da177e4SLinus Torvalds 200c1048affSErez Shitrit ppriv = ipoib_priv(pdev); 2011da177e4SLinus Torvalds 202198b12f7SErez Shitrit if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags)) 203198b12f7SErez Shitrit return -EPERM; 204198b12f7SErez Shitrit 20569956d83SErez Shitrit if (!mutex_trylock(&ppriv->sysfs_mutex)) 20626574401SEric W. Biederman return restart_syscall(); 207f47944ccSErez Shitrit 20869956d83SErez Shitrit if (!rtnl_trylock()) { 20969956d83SErez Shitrit mutex_unlock(&ppriv->sysfs_mutex); 21069956d83SErez Shitrit return restart_syscall(); 21169956d83SErez Shitrit } 21269956d83SErez Shitrit 2139c6f42e9SShalom Lagziel if (!down_write_trylock(&ppriv->vlan_rwsem)) { 2149c6f42e9SShalom Lagziel rtnl_unlock(); 2159c6f42e9SShalom Lagziel mutex_unlock(&ppriv->sysfs_mutex); 2169c6f42e9SShalom Lagziel return restart_syscall(); 2179c6f42e9SShalom Lagziel } 2189c6f42e9SShalom Lagziel 2191da177e4SLinus Torvalds list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) { 2209baa0b03SOr Gerlitz if (priv->pkey == pkey && 2219baa0b03SOr Gerlitz priv->child_type == IPOIB_LEGACY_CHILD) { 2221da177e4SLinus Torvalds list_del(&priv->list); 223edb5abb1SRoland Dreier dev = priv->dev; 2241da177e4SLinus Torvalds break; 2251da177e4SLinus Torvalds } 2261da177e4SLinus Torvalds } 227f47944ccSErez Shitrit up_write(&ppriv->vlan_rwsem); 228f47944ccSErez Shitrit 2291c3098cdSFeras Daoud if (dev) { 2301c3098cdSFeras Daoud ipoib_dbg(ppriv, "delete child vlan %s\n", dev->name); 2311c3098cdSFeras Daoud unregister_netdevice(dev); 2321c3098cdSFeras Daoud } 2331c3098cdSFeras Daoud 234cbbe1efaSRoland Dreier rtnl_unlock(); 23569956d83SErez Shitrit mutex_unlock(&ppriv->sysfs_mutex); 2361da177e4SLinus Torvalds 237edb5abb1SRoland Dreier if (dev) { 2387c9d9662SAlex Vesker struct rdma_netdev *rn; 2397c9d9662SAlex Vesker 2407c9d9662SAlex Vesker rn = netdev_priv(dev); 2417c9d9662SAlex Vesker rn->free_rdma_netdev(priv->dev); 242ab156afdSAlex Vesker kfree(priv); 243edb5abb1SRoland Dreier return 0; 244edb5abb1SRoland Dreier } 245edb5abb1SRoland Dreier 246edb5abb1SRoland Dreier return -ENODEV; 2471da177e4SLinus Torvalds } 248