diff options
| -rw-r--r-- | Documentation/infiniband/ipoib.txt | 3 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/Makefile | 3 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib.h | 13 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_main.c | 25 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_netlink.c | 114 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_vlan.c | 102 | ||||
| -rw-r--r-- | include/linux/if_link.h | 11 |
7 files changed, 220 insertions, 51 deletions
diff --git a/Documentation/infiniband/ipoib.txt b/Documentation/infiniband/ipoib.txt index 64eeb55..f2cfe26 100644 --- a/Documentation/infiniband/ipoib.txt +++ b/Documentation/infiniband/ipoib.txt @@ -24,6 +24,9 @@ Partitions and P_Keys The P_Key for any interface is given by the "pkey" file, and the main interface for a subinterface is in "parent." + Child interface create/delete can also be done using IPoIB's + rtnl_link_ops, where childs created using either way behave the same. + Datagram vs Connected modes The IPoIB driver supports two modes of operation: datagram and diff --git a/drivers/infiniband/ulp/ipoib/Makefile b/drivers/infiniband/ulp/ipoib/Makefile index 3090100..e5430dd 100644 --- a/drivers/infiniband/ulp/ipoib/Makefile +++ b/drivers/infiniband/ulp/ipoib/Makefile @@ -5,7 +5,8 @@ ib_ipoib-y := ipoib_main.o \ ipoib_multicast.o \ ipoib_verbs.o \ ipoib_vlan.o \ - ipoib_ethtool.o + ipoib_ethtool.o \ + ipoib_netlink.o ib_ipoib-$(CONFIG_INFINIBAND_IPOIB_CM) += ipoib_cm.o ib_ipoib-$(CONFIG_INFINIBAND_IPOIB_DEBUG) += ipoib_fs.o diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h index ca43901..381f51b 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib.h +++ b/drivers/infiniband/ulp/ipoib/ipoib.h @@ -104,6 +104,10 @@ enum { MAX_SEND_CQE = 16, IPOIB_CM_COPYBREAK = 256, + + IPOIB_NON_CHILD = 0, + IPOIB_LEGACY_CHILD = 1, + IPOIB_RTNL_CHILD = 2, }; #define IPOIB_OP_RECV (1ul << 31) @@ -350,6 +354,7 @@ struct ipoib_dev_priv { struct net_device *parent; struct list_head child_intfs; struct list_head list; + int child_type; #ifdef CONFIG_INFINIBAND_IPOIB_CM struct ipoib_cm_dev_priv cm; @@ -509,6 +514,14 @@ void ipoib_event(struct ib_event_handler *handler, int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); +int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, + u16 pkey, int child_type); + +int __init ipoib_netlink_init(void); +void __exit ipoib_netlink_fini(void); + +void ipoib_setup(struct net_device *dev); + void ipoib_pkey_poll(struct work_struct *work); int ipoib_pkey_dev_delay_open(struct net_device *dev); void ipoib_drain_cq(struct net_device *dev); diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 3e2085a..b3e9709 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -173,6 +173,11 @@ static int ipoib_stop(struct net_device *dev) return 0; } +static void ipoib_uninit(struct net_device *dev) +{ + ipoib_dev_cleanup(dev); +} + static netdev_features_t ipoib_fix_features(struct net_device *dev, netdev_features_t features) { struct ipoib_dev_priv *priv = netdev_priv(dev); @@ -1262,6 +1267,9 @@ out: void ipoib_dev_cleanup(struct net_device *dev) { struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv, *tcpriv; + LIST_HEAD(head); + + ASSERT_RTNL(); ipoib_delete_debug_files(dev); @@ -1270,10 +1278,9 @@ void ipoib_dev_cleanup(struct net_device *dev) /* Stop GC on child */ set_bit(IPOIB_STOP_NEIGH_GC, &cpriv->flags); cancel_delayed_work(&cpriv->neigh_reap_task); - unregister_netdev(cpriv->dev); - ipoib_dev_cleanup(cpriv->dev); - free_netdev(cpriv->dev); + unregister_netdevice_queue(cpriv->dev, &head); } + unregister_netdevice_many(&head); ipoib_ib_dev_cleanup(dev); @@ -1291,6 +1298,7 @@ static const struct header_ops ipoib_header_ops = { }; static const struct net_device_ops ipoib_netdev_ops = { + .ndo_uninit = ipoib_uninit, .ndo_open = ipoib_open, .ndo_stop = ipoib_stop, .ndo_change_mtu = ipoib_change_mtu, @@ -1300,7 +1308,7 @@ static const struct net_device_ops ipoib_netdev_ops = { .ndo_set_rx_mode = ipoib_set_mcast_list, }; -static void ipoib_setup(struct net_device *dev) +void ipoib_setup(struct net_device *dev) { struct ipoib_dev_priv *priv = netdev_priv(dev); @@ -1662,7 +1670,6 @@ static void ipoib_remove_one(struct ib_device *device) flush_workqueue(ipoib_workqueue); unregister_netdev(priv->dev); - ipoib_dev_cleanup(priv->dev); free_netdev(priv->dev); } @@ -1714,8 +1721,15 @@ static int __init ipoib_init_module(void) if (ret) goto err_sa; + ret = ipoib_netlink_init(); + if (ret) + goto err_client; + return 0; +err_client: + ib_unregister_client(&ipoib_client); + err_sa: ib_sa_unregister_client(&ipoib_sa_client); destroy_workqueue(ipoib_workqueue); @@ -1728,6 +1742,7 @@ err_fs: static void __exit ipoib_cleanup_module(void) { + ipoib_netlink_fini(); ib_unregister_client(&ipoib_client); ib_sa_unregister_client(&ipoib_sa_client); ipoib_unregister_debugfs(); diff --git a/drivers/infiniband/ulp/ipoib/ipoib_netlink.c b/drivers/infiniband/ulp/ipoib/ipoib_netlink.c new file mode 100644 index 0000000..a7dc5ea --- /dev/null +++ b/drivers/infiniband/ulp/ipoib/ipoib_netlink.c @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2012 Mellanox Technologies. - 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/netdevice.h> +#include <linux/module.h> +#include <net/rtnetlink.h> +#include "ipoib.h" + +static const struct nla_policy ipoib_policy[IFLA_IPOIB_MAX + 1] = { + [IFLA_IPOIB_PKEY] = { .type = NLA_U16 }, +}; + +static int ipoib_new_child_link(struct net *src_net, struct net_device *dev, + struct nlattr *tb[], struct nlattr *data[]) +{ + struct net_device *pdev; + struct ipoib_dev_priv *ppriv; + u16 child_pkey; + int err; + + if (!tb[IFLA_LINK]) + return -EINVAL; + + pdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); + if (!pdev) + return -ENODEV; + + ppriv = netdev_priv(pdev); + + if (test_bit(IPOIB_FLAG_SUBINTERFACE, &ppriv->flags)) { + ipoib_warn(ppriv, "child creation disallowed for child devices\n"); + return -EINVAL; + } + + if (!data || !data[IFLA_IPOIB_PKEY]) { + ipoib_dbg(ppriv, "no pkey specified, using parent pkey\n"); + child_pkey = ppriv->pkey; + } else + child_pkey = nla_get_u16(data[IFLA_IPOIB_PKEY]); + + err = __ipoib_vlan_add(ppriv, netdev_priv(dev), child_pkey, IPOIB_RTNL_CHILD); + + return err; +} + +static void ipoib_unregister_child_dev(struct net_device *dev, struct list_head *head) +{ + struct ipoib_dev_priv *priv, *ppriv; + + priv = netdev_priv(dev); + ppriv = netdev_priv(priv->parent); + + mutex_lock(&ppriv->vlan_mutex); + unregister_netdevice_queue(dev, head); + list_del(&priv->list); + mutex_unlock(&ppriv->vlan_mutex); +} + +static size_t ipoib_get_size(const struct net_device *dev) +{ + return nla_total_size(2); /* IFLA_IPOIB_PKEY */ +} + +static struct rtnl_link_ops ipoib_link_ops __read_mostly = { + .kind = "ipoib", + .maxtype = IFLA_IPOIB_MAX, + .policy = ipoib_policy, + .priv_size = sizeof(struct ipoib_dev_priv), + .setup = ipoib_setup, + .newlink = ipoib_new_child_link, + .dellink = ipoib_unregister_child_dev, + .get_size = ipoib_get_size, +}; + +int __init ipoib_netlink_init(void) +{ + return rtnl_link_register(&ipoib_link_ops); +} + +void __exit ipoib_netlink_fini(void) +{ + rtnl_link_unregister(&ipoib_link_ops); +} + +MODULE_ALIAS_RTNL_LINK("ipoib"); diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c index d7e9740..238bbf9 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c @@ -49,47 +49,11 @@ static ssize_t show_parent(struct device *d, struct device_attribute *attr, } static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL); -int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) +int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, + u16 pkey, int type) { - struct ipoib_dev_priv *ppriv, *priv; - char intf_name[IFNAMSIZ]; int result; - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - - ppriv = netdev_priv(pdev); - - 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 child interfaces to make sure the Pkey doesn't match. - */ - if (ppriv->pkey == pkey) { - result = -ENOTUNIQ; - priv = NULL; - goto err; - } - - list_for_each_entry(priv, &ppriv->child_intfs, list) { - if (priv->pkey == pkey) { - result = -ENOTUNIQ; - priv = NULL; - goto err; - } - } - - snprintf(intf_name, sizeof intf_name, "%s.%04x", - ppriv->dev->name, pkey); - priv = ipoib_intf_alloc(intf_name); - if (!priv) { - result = -ENOMEM; - goto err; - } - 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); @@ -134,14 +98,13 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) if (device_create_file(&priv->dev->dev, &dev_attr_parent)) goto sysfs_failed; + priv->child_type = type; list_add_tail(&priv->list, &ppriv->child_intfs); - mutex_unlock(&ppriv->vlan_mutex); - rtnl_unlock(); - return 0; sysfs_failed: + result = -ENOMEM; ipoib_delete_debug_files(priv->dev); unregister_netdevice(priv->dev); @@ -149,11 +112,60 @@ 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); - rtnl_unlock(); - if (priv) + + if (result) free_netdev(priv->dev); + rtnl_unlock(); + return result; } @@ -171,9 +183,9 @@ int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) return restart_syscall(); mutex_lock(&ppriv->vlan_mutex); list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) { - if (priv->pkey == pkey) { + if (priv->pkey == pkey && + priv->child_type == IPOIB_LEGACY_CHILD) { unregister_netdevice(priv->dev); - ipoib_dev_cleanup(priv->dev); list_del(&priv->list); dev = priv->dev; break; diff --git a/include/linux/if_link.h b/include/linux/if_link.h index ac173bd..24c0dd0 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -398,4 +398,15 @@ struct ifla_port_vsi { __u8 pad[3]; }; + +/* IPoIB section */ + +enum { + IFLA_IPOIB_UNSPEC, + IFLA_IPOIB_PKEY, + __IFLA_IPOIB_MAX +}; + +#define IFLA_IPOIB_MAX (__IFLA_IPOIB_MAX - 1) + #endif /* _LINUX_IF_LINK_H */ |
