Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

9 files changed, 3883 insertions, 0 deletions

diff --git a/drivers/infiniband/ulp/ipoib/Kconfig b/drivers/infiniband/ulp/ipoib/Kconfig
new file mode 100644
index 000000000000..8d2e04cac68e
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/Kconfig
@@ -0,0 +1,33 @@
+config INFINIBAND_IPOIB
+	tristate "IP-over-InfiniBand"
+	depends on INFINIBAND && NETDEVICES && INET
+	---help---
+	  Support for the IP-over-InfiniBand protocol (IPoIB). This
+	  transports IP packets over InfiniBand so you can use your IB
+	  device as a fancy NIC.
+
+	  The IPoIB protocol is defined by the IETF ipoib working
+	  group: <http://www.ietf.org/html.charters/ipoib-charter.html>.
+
+config INFINIBAND_IPOIB_DEBUG
+	bool "IP-over-InfiniBand debugging"
+	depends on INFINIBAND_IPOIB
+	---help---
+	  This option causes debugging code to be compiled into the
+	  IPoIB driver.  The output can be turned on via the
+	  debug_level and mcast_debug_level module parameters (which
+	  can also be set after the driver is loaded through sysfs).
+
+	  This option also creates an "ipoib_debugfs," which can be
+	  mounted to expose debugging information about IB multicast
+	  groups used by the IPoIB driver.
+
+config INFINIBAND_IPOIB_DEBUG_DATA
+	bool "IP-over-InfiniBand data path debugging"
+	depends on INFINIBAND_IPOIB_DEBUG
+	---help---
+	  This option compiles debugging code into the the data path
+	  of the IPoIB driver.  The output can be turned on via the
+	  data_debug_level module parameter; however, even with output
+	  turned off, this debugging code will have some performance
+	  impact.
diff --git a/drivers/infiniband/ulp/ipoib/Makefile b/drivers/infiniband/ulp/ipoib/Makefile
new file mode 100644
index 000000000000..394bc08abc6f
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/Makefile
@@ -0,0 +1,11 @@
+EXTRA_CFLAGS += -Idrivers/infiniband/include
+
+obj-$(CONFIG_INFINIBAND_IPOIB)			+= ib_ipoib.o
+
+ib_ipoib-y					:= ipoib_main.o \
+						   ipoib_ib.o \
+						   ipoib_multicast.o \
+						   ipoib_verbs.o \
+						   ipoib_vlan.o
+ib_ipoib-$(CONFIG_INFINIBAND_IPOIB_DEBUG)	+= ipoib_fs.o
+
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
new file mode 100644
index 000000000000..04c98f54e9c4
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -0,0 +1,353 @@
+/*
+ * Copyright (c) 2004, 2005 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.
+ *
+ * $Id: ipoib.h 1358 2004-12-17 22:00:11Z roland $
+ */
+
+#ifndef _IPOIB_H
+#define _IPOIB_H
+
+#include <linux/list.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/workqueue.h>
+#include <linux/pci.h>
+#include <linux/config.h>
+#include <linux/kref.h>
+#include <linux/if_infiniband.h>
+
+#include <net/neighbour.h>
+
+#include <asm/atomic.h>
+#include <asm/semaphore.h>
+
+#include <ib_verbs.h>
+#include <ib_pack.h>
+#include <ib_sa.h>
+
+/* constants */
+
+enum {
+	IPOIB_PACKET_SIZE         = 2048,
+	IPOIB_BUF_SIZE 		  = IPOIB_PACKET_SIZE + IB_GRH_BYTES,
+
+	IPOIB_ENCAP_LEN 	  = 4,
+
+	IPOIB_RX_RING_SIZE 	  = 128,
+	IPOIB_TX_RING_SIZE 	  = 64,
+
+	IPOIB_NUM_WC 		  = 4,
+
+	IPOIB_MAX_PATH_REC_QUEUE  = 3,
+	IPOIB_MAX_MCAST_QUEUE     = 3,
+
+	IPOIB_FLAG_OPER_UP 	  = 0,
+	IPOIB_FLAG_ADMIN_UP 	  = 1,
+	IPOIB_PKEY_ASSIGNED 	  = 2,
+	IPOIB_PKEY_STOP 	  = 3,
+	IPOIB_FLAG_SUBINTERFACE   = 4,
+	IPOIB_MCAST_RUN 	  = 5,
+	IPOIB_STOP_REAPER         = 6,
+
+	IPOIB_MAX_BACKOFF_SECONDS = 16,
+
+	IPOIB_MCAST_FLAG_FOUND 	  = 0,	/* used in set_multicast_list */
+	IPOIB_MCAST_FLAG_SENDONLY = 1,
+	IPOIB_MCAST_FLAG_BUSY 	  = 2,	/* joining or already joined */
+	IPOIB_MCAST_FLAG_ATTACHED = 3,
+};
+
+/* structs */
+
+struct ipoib_header {
+	u16 proto;
+	u16 reserved;
+};
+
+struct ipoib_pseudoheader {
+	u8  hwaddr[INFINIBAND_ALEN];
+};
+
+struct ipoib_mcast;
+
+struct ipoib_buf {
+	struct sk_buff *skb;
+	DECLARE_PCI_UNMAP_ADDR(mapping)
+};
+
+/*
+ * Device private locking: tx_lock protects members used in TX fast
+ * path (and we use LLTX so upper layers don't do extra locking).
+ * lock protects everything else.  lock nests inside of tx_lock (ie
+ * tx_lock must be acquired first if needed).
+ */
+struct ipoib_dev_priv {
+	spinlock_t lock;
+
+	struct net_device *dev;
+
+	unsigned long flags;
+
+	struct semaphore mcast_mutex;
+	struct semaphore vlan_mutex;
+
+	struct rb_root  path_tree;
+	struct list_head path_list;
+
+	struct ipoib_mcast *broadcast;
+	struct list_head multicast_list;
+	struct rb_root multicast_tree;
+
+	struct work_struct pkey_task;
+	struct work_struct mcast_task;
+	struct work_struct flush_task;
+	struct work_struct restart_task;
+	struct work_struct ah_reap_task;
+
+	struct ib_device *ca;
+	u8            	  port;
+	u16           	  pkey;
+	struct ib_pd  	 *pd;
+	struct ib_mr  	 *mr;
+	struct ib_cq  	 *cq;
+	struct ib_qp  	 *qp;
+	u32           	  qkey;
+
+	union ib_gid local_gid;
+	u16          local_lid;
+	u8           local_rate;
+
+	unsigned int admin_mtu;
+	unsigned int mcast_mtu;
+
+	struct ipoib_buf *rx_ring;
+
+	spinlock_t        tx_lock;
+	struct ipoib_buf *tx_ring;
+	unsigned          tx_head;
+	unsigned          tx_tail;
+	struct ib_sge     tx_sge;
+	struct ib_send_wr tx_wr;
+
+	struct ib_wc ibwc[IPOIB_NUM_WC];
+
+	struct list_head dead_ahs;
+
+	struct ib_event_handler event_handler;
+
+	struct net_device_stats stats;
+
+	struct net_device *parent;
+	struct list_head child_intfs;
+	struct list_head list;
+
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+	struct list_head fs_list;
+	struct dentry *mcg_dentry;
+#endif
+};
+
+struct ipoib_ah {
+	struct net_device *dev;
+	struct ib_ah      *ah;
+	struct list_head   list;
+	struct kref        ref;
+	unsigned           last_send;
+};
+
+struct ipoib_path {
+	struct net_device    *dev;
+	struct ib_sa_path_rec pathrec;
+	struct ipoib_ah      *ah;
+	struct sk_buff_head   queue;
+
+	struct list_head      neigh_list;
+
+	int                   query_id;
+	struct ib_sa_query   *query;
+	struct completion     done;
+
+	struct rb_node        rb_node;
+	struct list_head      list;
+};
+
+struct ipoib_neigh {
+	struct ipoib_ah    *ah;
+	struct sk_buff_head queue;
+
+	struct neighbour   *neighbour;
+
+	struct list_head    list;
+};
+
+static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
+{
+	return (struct ipoib_neigh **) (neigh->ha + 24 -
+					(offsetof(struct neighbour, ha) & 4));
+}
+
+extern struct workqueue_struct *ipoib_workqueue;
+
+/* functions */
+
+void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
+
+struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
+				 struct ib_pd *pd, struct ib_ah_attr *attr);
+void ipoib_free_ah(struct kref *kref);
+static inline void ipoib_put_ah(struct ipoib_ah *ah)
+{
+	kref_put(&ah->ref, ipoib_free_ah);
+}
+
+int ipoib_add_pkey_attr(struct net_device *dev);
+
+void ipoib_send(struct net_device *dev, struct sk_buff *skb,
+		struct ipoib_ah *address, u32 qpn);
+void ipoib_reap_ah(void *dev_ptr);
+
+void ipoib_flush_paths(struct net_device *dev);
+struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
+
+int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
+void ipoib_ib_dev_flush(void *dev);
+void ipoib_ib_dev_cleanup(struct net_device *dev);
+
+int ipoib_ib_dev_open(struct net_device *dev);
+int ipoib_ib_dev_up(struct net_device *dev);
+int ipoib_ib_dev_down(struct net_device *dev);
+int ipoib_ib_dev_stop(struct net_device *dev);
+
+int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
+void ipoib_dev_cleanup(struct net_device *dev);
+
+void ipoib_mcast_join_task(void *dev_ptr);
+void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
+		      struct sk_buff *skb);
+
+void ipoib_mcast_restart_task(void *dev_ptr);
+int ipoib_mcast_start_thread(struct net_device *dev);
+int ipoib_mcast_stop_thread(struct net_device *dev);
+
+void ipoib_mcast_dev_down(struct net_device *dev);
+void ipoib_mcast_dev_flush(struct net_device *dev);
+
+struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
+void ipoib_mcast_iter_free(struct ipoib_mcast_iter *iter);
+int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
+void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
+				  union ib_gid *gid,
+				  unsigned long *created,
+				  unsigned int *queuelen,
+				  unsigned int *complete,
+				  unsigned int *send_only);
+
+int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
+		       union ib_gid *mgid);
+int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
+		       union ib_gid *mgid);
+
+int ipoib_qp_create(struct net_device *dev);
+int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
+void ipoib_transport_dev_cleanup(struct net_device *dev);
+
+void ipoib_event(struct ib_event_handler *handler,
+		 struct ib_event *record);
+
+int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
+int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
+
+void ipoib_pkey_poll(void *dev);
+int ipoib_pkey_dev_delay_open(struct net_device *dev);
+
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+int ipoib_create_debug_file(struct net_device *dev);
+void ipoib_delete_debug_file(struct net_device *dev);
+int ipoib_register_debugfs(void);
+void ipoib_unregister_debugfs(void);
+#else
+static inline int ipoib_create_debug_file(struct net_device *dev) { return 0; }
+static inline void ipoib_delete_debug_file(struct net_device *dev) { }
+static inline int ipoib_register_debugfs(void) { return 0; }
+static inline void ipoib_unregister_debugfs(void) { }
+#endif
+
+
+#define ipoib_printk(level, priv, format, arg...)	\
+	printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
+#define ipoib_warn(priv, format, arg...)		\
+	ipoib_printk(KERN_WARNING, priv, format , ## arg)
+
+
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+extern int ipoib_debug_level;
+
+#define ipoib_dbg(priv, format, arg...)			\
+	do {					        \
+		if (ipoib_debug_level > 0)			\
+			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
+	} while (0)
+#define ipoib_dbg_mcast(priv, format, arg...)		\
+	do {					        \
+		if (mcast_debug_level > 0)		\
+			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
+	} while (0)
+#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
+#define ipoib_dbg(priv, format, arg...)			\
+	do { (void) (priv); } while (0)
+#define ipoib_dbg_mcast(priv, format, arg...)		\
+	do { (void) (priv); } while (0)
+#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
+
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
+#define ipoib_dbg_data(priv, format, arg...)		\
+	do {					        \
+		if (data_debug_level > 0)		\
+			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
+	} while (0)
+#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
+#define ipoib_dbg_data(priv, format, arg...)		\
+	do { (void) (priv); } while (0)
+#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
+
+
+#define IPOIB_GID_FMT		"%x:%x:%x:%x:%x:%x:%x:%x"
+
+#define IPOIB_GID_ARG(gid)	be16_to_cpup((__be16 *) ((gid).raw +  0)), \
+				be16_to_cpup((__be16 *) ((gid).raw +  2)), \
+				be16_to_cpup((__be16 *) ((gid).raw +  4)), \
+				be16_to_cpup((__be16 *) ((gid).raw +  6)), \
+				be16_to_cpup((__be16 *) ((gid).raw +  8)), \
+				be16_to_cpup((__be16 *) ((gid).raw + 10)), \
+				be16_to_cpup((__be16 *) ((gid).raw + 12)), \
+				be16_to_cpup((__be16 *) ((gid).raw + 14))
+
+#endif /* _IPOIB_H */
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_fs.c b/drivers/infiniband/ulp/ipoib/ipoib_fs.c
new file mode 100644
index 000000000000..044f2c78ef15
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/ipoib_fs.c
@@ -0,0 +1,287 @@
+/*
+ * 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.
+ *
+ * $Id: ipoib_fs.c 1389 2004-12-27 22:56:47Z roland $
+ */
+
+#include <linux/pagemap.h>
+#include <linux/seq_file.h>
+
+#include "ipoib.h"
+
+enum {
+	IPOIB_MAGIC = 0x49504942 /* "IPIB" */
+};
+
+static DECLARE_MUTEX(ipoib_fs_mutex);
+static struct dentry *ipoib_root;
+static struct super_block *ipoib_sb;
+static LIST_HEAD(ipoib_device_list);
+
+static void *ipoib_mcg_seq_start(struct seq_file *file, loff_t *pos)
+{
+	struct ipoib_mcast_iter *iter;
+	loff_t n = *pos;
+
+	iter = ipoib_mcast_iter_init(file->private);
+	if (!iter)
+		return NULL;
+
+	while (n--) {
+		if (ipoib_mcast_iter_next(iter)) {
+			ipoib_mcast_iter_free(iter);
+			return NULL;
+		}
+	}
+
+	return iter;
+}
+
+static void *ipoib_mcg_seq_next(struct seq_file *file, void *iter_ptr,
+				   loff_t *pos)
+{
+	struct ipoib_mcast_iter *iter = iter_ptr;
+
+	(*pos)++;
+
+	if (ipoib_mcast_iter_next(iter)) {
+		ipoib_mcast_iter_free(iter);
+		return NULL;
+	}
+
+	return iter;
+}
+
+static void ipoib_mcg_seq_stop(struct seq_file *file, void *iter_ptr)
+{
+	/* nothing for now */
+}
+
+static int ipoib_mcg_seq_show(struct seq_file *file, void *iter_ptr)
+{
+	struct ipoib_mcast_iter *iter = iter_ptr;
+	char gid_buf[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
+	union ib_gid mgid;
+	int i, n;
+	unsigned long created;
+	unsigned int queuelen, complete, send_only;
+
+	if (iter) {
+		ipoib_mcast_iter_read(iter, &mgid, &created, &queuelen,
+				      &complete, &send_only);
+
+		for (n = 0, i = 0; i < sizeof mgid / 2; ++i) {
+			n += sprintf(gid_buf + n, "%x",
+				     be16_to_cpu(((u16 *)mgid.raw)[i]));
+			if (i < sizeof mgid / 2 - 1)
+				gid_buf[n++] = ':';
+		}
+	}
+
+	seq_printf(file, "GID: %*s", -(1 + (int) sizeof gid_buf), gid_buf);
+
+	seq_printf(file,
+		   " created: %10ld queuelen: %4d complete: %d send_only: %d\n",
+		   created, queuelen, complete, send_only);
+
+	return 0;
+}
+
+static struct seq_operations ipoib_seq_ops = {
+	.start = ipoib_mcg_seq_start,
+	.next  = ipoib_mcg_seq_next,
+	.stop  = ipoib_mcg_seq_stop,
+	.show  = ipoib_mcg_seq_show,
+};
+
+static int ipoib_mcg_open(struct inode *inode, struct file *file)
+{
+	struct seq_file *seq;
+	int ret;
+
+	ret = seq_open(file, &ipoib_seq_ops);
+	if (ret)
+		return ret;
+
+	seq = file->private_data;
+	seq->private = inode->u.generic_ip;
+
+	return 0;
+}
+
+static struct file_operations ipoib_fops = {
+	.owner   = THIS_MODULE,
+	.open    = ipoib_mcg_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release
+};
+
+static struct inode *ipoib_get_inode(void)
+{
+	struct inode *inode = new_inode(ipoib_sb);
+
+	if (inode) {
+		inode->i_mode 	 = S_IFREG | S_IRUGO;
+		inode->i_uid 	 = 0;
+		inode->i_gid 	 = 0;
+		inode->i_blksize = PAGE_CACHE_SIZE;
+		inode->i_blocks  = 0;
+		inode->i_atime 	 = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+		inode->i_fop     = &ipoib_fops;
+	}
+
+	return inode;
+}
+
+static int __ipoib_create_debug_file(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct dentry *dentry;
+	struct inode *inode;
+	char name[IFNAMSIZ + sizeof "_mcg"];
+
+	snprintf(name, sizeof name, "%s_mcg", dev->name);
+
+	dentry = d_alloc_name(ipoib_root, name);
+	if (!dentry)
+		return -ENOMEM;
+
+	inode = ipoib_get_inode();
+	if (!inode) {
+		dput(dentry);
+		return -ENOMEM;
+	}
+
+	inode->u.generic_ip = dev;
+	priv->mcg_dentry = dentry;
+
+	d_add(dentry, inode);
+
+	return 0;
+}
+
+int ipoib_create_debug_file(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	down(&ipoib_fs_mutex);
+
+	list_add_tail(&priv->fs_list, &ipoib_device_list);
+
+	if (!ipoib_sb) {
+		up(&ipoib_fs_mutex);
+		return 0;
+	}
+
+	up(&ipoib_fs_mutex);
+
+	return __ipoib_create_debug_file(dev);
+}
+
+void ipoib_delete_debug_file(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	down(&ipoib_fs_mutex);
+	list_del(&priv->fs_list);
+	if (!ipoib_sb) {
+		up(&ipoib_fs_mutex);
+		return;
+	}
+	up(&ipoib_fs_mutex);
+
+	if (priv->mcg_dentry) {
+		d_drop(priv->mcg_dentry);
+		simple_unlink(ipoib_root->d_inode, priv->mcg_dentry);
+	}
+}
+
+static int ipoib_fill_super(struct super_block *sb, void *data, int silent)
+{
+	static struct tree_descr ipoib_files[] = {
+		{ "" }
+	};
+	struct ipoib_dev_priv *priv;
+	int ret;
+
+	ret = simple_fill_super(sb, IPOIB_MAGIC, ipoib_files);
+	if (ret)
+		return ret;
+
+	ipoib_root = sb->s_root;
+
+	down(&ipoib_fs_mutex);
+
+	ipoib_sb = sb;
+
+	list_for_each_entry(priv, &ipoib_device_list, fs_list) {
+		ret = __ipoib_create_debug_file(priv->dev);
+		if (ret)
+			break;
+	}
+
+	up(&ipoib_fs_mutex);
+
+	return ret;
+}
+
+static struct super_block *ipoib_get_sb(struct file_system_type *fs_type,
+	int flags, const char *dev_name, void *data)
+{
+	return get_sb_single(fs_type, flags, data, ipoib_fill_super);
+}
+
+static void ipoib_kill_sb(struct super_block *sb)
+{
+	down(&ipoib_fs_mutex);
+	ipoib_sb = NULL;
+	up(&ipoib_fs_mutex);
+
+	kill_litter_super(sb);
+}
+
+static struct file_system_type ipoib_fs_type = {
+	.owner		= THIS_MODULE,
+	.name		= "ipoib_debugfs",
+	.get_sb		= ipoib_get_sb,
+	.kill_sb	= ipoib_kill_sb,
+};
+
+int ipoib_register_debugfs(void)
+{
+	return register_filesystem(&ipoib_fs_type);
+}
+
+void ipoib_unregister_debugfs(void)
+{
+	unregister_filesystem(&ipoib_fs_type);
+}
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
new file mode 100644
index 000000000000..c5a1d45e0ac5
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -0,0 +1,668 @@
+/*
+ * Copyright (c) 2004, 2005 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.
+ *
+ * $Id: ipoib_ib.c 1386 2004-12-27 16:23:17Z roland $
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+
+#include <ib_cache.h>
+
+#include "ipoib.h"
+
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
+static int data_debug_level;
+
+module_param(data_debug_level, int, 0644);
+MODULE_PARM_DESC(data_debug_level,
+		 "Enable data path debug tracing if > 0");
+#endif
+
+#define	IPOIB_OP_RECV	(1ul << 31)
+
+static DECLARE_MUTEX(pkey_sem);
+
+struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
+				 struct ib_pd *pd, struct ib_ah_attr *attr)
+{
+	struct ipoib_ah *ah;
+
+	ah = kmalloc(sizeof *ah, GFP_KERNEL);
+	if (!ah)
+		return NULL;
+
+	ah->dev       = dev;
+	ah->last_send = 0;
+	kref_init(&ah->ref);
+
+	ah->ah = ib_create_ah(pd, attr);
+	if (IS_ERR(ah->ah)) {
+		kfree(ah);
+		ah = NULL;
+	} else
+		ipoib_dbg(netdev_priv(dev), "Created ah %p\n", ah->ah);
+
+	return ah;
+}
+
+void ipoib_free_ah(struct kref *kref)
+{
+	struct ipoib_ah *ah = container_of(kref, struct ipoib_ah, ref);
+	struct ipoib_dev_priv *priv = netdev_priv(ah->dev);
+
+	unsigned long flags;
+
+	if (ah->last_send <= priv->tx_tail) {
+		ipoib_dbg(priv, "Freeing ah %p\n", ah->ah);
+		ib_destroy_ah(ah->ah);
+		kfree(ah);
+	} else {
+		spin_lock_irqsave(&priv->lock, flags);
+		list_add_tail(&ah->list, &priv->dead_ahs);
+		spin_unlock_irqrestore(&priv->lock, flags);
+	}
+}
+
+static inline int ipoib_ib_receive(struct ipoib_dev_priv *priv,
+				   unsigned int wr_id,
+				   dma_addr_t addr)
+{
+	struct ib_sge list = {
+		.addr    = addr,
+		.length  = IPOIB_BUF_SIZE,
+		.lkey    = priv->mr->lkey,
+	};
+	struct ib_recv_wr param = {
+		.wr_id 	    = wr_id | IPOIB_OP_RECV,
+		.sg_list    = &list,
+		.num_sge    = 1,
+	};
+	struct ib_recv_wr *bad_wr;
+
+	return ib_post_recv(priv->qp, &param, &bad_wr);
+}
+
+static int ipoib_ib_post_receive(struct net_device *dev, int id)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct sk_buff *skb;
+	dma_addr_t addr;
+	int ret;
+
+	skb = dev_alloc_skb(IPOIB_BUF_SIZE + 4);
+	if (!skb) {
+		ipoib_warn(priv, "failed to allocate receive buffer\n");
+
+		priv->rx_ring[id].skb = NULL;
+		return -ENOMEM;
+	}
+	skb_reserve(skb, 4);	/* 16 byte align IP header */
+	priv->rx_ring[id].skb = skb;
+	addr = dma_map_single(priv->ca->dma_device,
+			      skb->data, IPOIB_BUF_SIZE,
+			      DMA_FROM_DEVICE);
+	pci_unmap_addr_set(&priv->rx_ring[id], mapping, addr);
+
+	ret = ipoib_ib_receive(priv, id, addr);
+	if (ret) {
+		ipoib_warn(priv, "ipoib_ib_receive failed for buf %d (%d)\n",
+			   id, ret);
+		dma_unmap_single(priv->ca->dma_device, addr,
+				 IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
+		dev_kfree_skb_any(skb);
+		priv->rx_ring[id].skb = NULL;
+	}
+
+	return ret;
+}
+
+static int ipoib_ib_post_receives(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	int i;
+
+	for (i = 0; i < IPOIB_RX_RING_SIZE; ++i) {
+		if (ipoib_ib_post_receive(dev, i)) {
+			ipoib_warn(priv, "ipoib_ib_post_receive failed for buf %d\n", i);
+			return -EIO;
+		}
+	}
+
+	return 0;
+}
+
+static void ipoib_ib_handle_wc(struct net_device *dev,
+			       struct ib_wc *wc)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	unsigned int wr_id = wc->wr_id;
+
+	ipoib_dbg_data(priv, "called: id %d, op %d, status: %d\n",
+		       wr_id, wc->opcode, wc->status);
+
+	if (wr_id & IPOIB_OP_RECV) {
+		wr_id &= ~IPOIB_OP_RECV;
+
+		if (wr_id < IPOIB_RX_RING_SIZE) {
+			struct sk_buff *skb = priv->rx_ring[wr_id].skb;
+
+			priv->rx_ring[wr_id].skb = NULL;
+
+			dma_unmap_single(priv->ca->dma_device,
+					 pci_unmap_addr(&priv->rx_ring[wr_id],
+							mapping),
+					 IPOIB_BUF_SIZE,
+					 DMA_FROM_DEVICE);
+
+			if (wc->status != IB_WC_SUCCESS) {
+				if (wc->status != IB_WC_WR_FLUSH_ERR)
+					ipoib_warn(priv, "failed recv event "
+						   "(status=%d, wrid=%d vend_err %x)\n",
+						   wc->status, wr_id, wc->vendor_err);
+				dev_kfree_skb_any(skb);
+				return;
+			}
+
+			ipoib_dbg_data(priv, "received %d bytes, SLID 0x%04x\n",
+				       wc->byte_len, wc->slid);
+
+			skb_put(skb, wc->byte_len);
+			skb_pull(skb, IB_GRH_BYTES);
+
+			if (wc->slid != priv->local_lid ||
+			    wc->src_qp != priv->qp->qp_num) {
+				skb->protocol = ((struct ipoib_header *) skb->data)->proto;
+
+				skb_pull(skb, IPOIB_ENCAP_LEN);
+
+				dev->last_rx = jiffies;
+				++priv->stats.rx_packets;
+				priv->stats.rx_bytes += skb->len;
+
+				skb->dev = dev;
+				/* XXX get correct PACKET_ type here */
+				skb->pkt_type = PACKET_HOST;
+				netif_rx_ni(skb);
+			} else {
+				ipoib_dbg_data(priv, "dropping loopback packet\n");
+				dev_kfree_skb_any(skb);
+			}
+
+			/* repost receive */
+			if (ipoib_ib_post_receive(dev, wr_id))
+				ipoib_warn(priv, "ipoib_ib_post_receive failed "
+					   "for buf %d\n", wr_id);
+		} else
+			ipoib_warn(priv, "completion event with wrid %d\n",
+				   wr_id);
+
+	} else {
+		struct ipoib_buf *tx_req;
+		unsigned long flags;
+
+		if (wr_id >= IPOIB_TX_RING_SIZE) {
+			ipoib_warn(priv, "completion event with wrid %d (> %d)\n",
+				   wr_id, IPOIB_TX_RING_SIZE);
+			return;
+		}
+
+		ipoib_dbg_data(priv, "send complete, wrid %d\n", wr_id);
+
+		tx_req = &priv->tx_ring[wr_id];
+
+		dma_unmap_single(priv->ca->dma_device,
+				 pci_unmap_addr(tx_req, mapping),
+				 tx_req->skb->len,
+				 DMA_TO_DEVICE);
+
+		++priv->stats.tx_packets;
+		priv->stats.tx_bytes += tx_req->skb->len;
+
+		dev_kfree_skb_any(tx_req->skb);
+
+		spin_lock_irqsave(&priv->tx_lock, flags);
+		++priv->tx_tail;
+		if (netif_queue_stopped(dev) &&
+		    priv->tx_head - priv->tx_tail <= IPOIB_TX_RING_SIZE / 2)
+			netif_wake_queue(dev);
+		spin_unlock_irqrestore(&priv->tx_lock, flags);
+
+		if (wc->status != IB_WC_SUCCESS &&
+		    wc->status != IB_WC_WR_FLUSH_ERR)
+			ipoib_warn(priv, "failed send event "
+				   "(status=%d, wrid=%d vend_err %x)\n",
+				   wc->status, wr_id, wc->vendor_err);
+	}
+}
+
+void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr)
+{
+	struct net_device *dev = (struct net_device *) dev_ptr;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	int n, i;
+
+	ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
+	do {
+		n = ib_poll_cq(cq, IPOIB_NUM_WC, priv->ibwc);
+		for (i = 0; i < n; ++i)
+			ipoib_ib_handle_wc(dev, priv->ibwc + i);
+	} while (n == IPOIB_NUM_WC);
+}
+
+static inline int post_send(struct ipoib_dev_priv *priv,
+			    unsigned int wr_id,
+			    struct ib_ah *address, u32 qpn,
+			    dma_addr_t addr, int len)
+{
+	struct ib_send_wr *bad_wr;
+
+	priv->tx_sge.addr             = addr;
+	priv->tx_sge.length           = len;
+
+	priv->tx_wr.wr_id 	      = wr_id;
+	priv->tx_wr.wr.ud.remote_qpn  = qpn;
+	priv->tx_wr.wr.ud.ah 	      = address;
+
+	return ib_post_send(priv->qp, &priv->tx_wr, &bad_wr);
+}
+
+void ipoib_send(struct net_device *dev, struct sk_buff *skb,
+		struct ipoib_ah *address, u32 qpn)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_buf *tx_req;
+	dma_addr_t addr;
+
+	if (skb->len > dev->mtu + INFINIBAND_ALEN) {
+		ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n",
+			   skb->len, dev->mtu + INFINIBAND_ALEN);
+		++priv->stats.tx_dropped;
+		++priv->stats.tx_errors;
+		dev_kfree_skb_any(skb);
+		return;
+	}
+
+	ipoib_dbg_data(priv, "sending packet, length=%d address=%p qpn=0x%06x\n",
+		       skb->len, address, qpn);
+
+	/*
+	 * We put the skb into the tx_ring _before_ we call post_send()
+	 * because it's entirely possible that the completion handler will
+	 * run before we execute anything after the post_send().  That
+	 * means we have to make sure everything is properly recorded and
+	 * our state is consistent before we call post_send().
+	 */
+	tx_req = &priv->tx_ring[priv->tx_head & (IPOIB_TX_RING_SIZE - 1)];
+	tx_req->skb = skb;
+	addr = dma_map_single(priv->ca->dma_device, skb->data, skb->len,
+			      DMA_TO_DEVICE);
+	pci_unmap_addr_set(tx_req, mapping, addr);
+
+	if (unlikely(post_send(priv, priv->tx_head & (IPOIB_TX_RING_SIZE - 1),
+			       address->ah, qpn, addr, skb->len))) {
+		ipoib_warn(priv, "post_send failed\n");
+		++priv->stats.tx_errors;
+		dma_unmap_single(priv->ca->dma_device, addr, skb->len,
+				 DMA_TO_DEVICE);
+		dev_kfree_skb_any(skb);
+	} else {
+		dev->trans_start = jiffies;
+
+		address->last_send = priv->tx_head;
+		++priv->tx_head;
+
+		if (priv->tx_head - priv->tx_tail == IPOIB_TX_RING_SIZE) {
+			ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n");
+			netif_stop_queue(dev);
+		}
+	}
+}
+
+static void __ipoib_reap_ah(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_ah *ah, *tah;
+	LIST_HEAD(remove_list);
+
+	spin_lock_irq(&priv->lock);
+	list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list)
+		if (ah->last_send <= priv->tx_tail) {
+			list_del(&ah->list);
+			list_add_tail(&ah->list, &remove_list);
+		}
+	spin_unlock_irq(&priv->lock);
+
+	list_for_each_entry_safe(ah, tah, &remove_list, list) {
+		ipoib_dbg(priv, "Reaping ah %p\n", ah->ah);
+		ib_destroy_ah(ah->ah);
+		kfree(ah);
+	}
+}
+
+void ipoib_reap_ah(void *dev_ptr)
+{
+	struct net_device *dev = dev_ptr;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	__ipoib_reap_ah(dev);
+
+	if (!test_bit(IPOIB_STOP_REAPER, &priv->flags))
+		queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ);
+}
+
+int ipoib_ib_dev_open(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	int ret;
+
+	ret = ipoib_qp_create(dev);
+	if (ret) {
+		ipoib_warn(priv, "ipoib_qp_create returned %d\n", ret);
+		return -1;
+	}
+
+	ret = ipoib_ib_post_receives(dev);
+	if (ret) {
+		ipoib_warn(priv, "ipoib_ib_post_receives returned %d\n", ret);
+		return -1;
+	}
+
+	clear_bit(IPOIB_STOP_REAPER, &priv->flags);
+	queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ);
+
+	return 0;
+}
+
+int ipoib_ib_dev_up(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	set_bit(IPOIB_FLAG_OPER_UP, &priv->flags);
+
+	return ipoib_mcast_start_thread(dev);
+}
+
+int ipoib_ib_dev_down(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_dbg(priv, "downing ib_dev\n");
+
+	clear_bit(IPOIB_FLAG_OPER_UP, &priv->flags);
+	netif_carrier_off(dev);
+
+	/* Shutdown the P_Key thread if still active */
+	if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
+		down(&pkey_sem);
+		set_bit(IPOIB_PKEY_STOP, &priv->flags);
+		cancel_delayed_work(&priv->pkey_task);
+		up(&pkey_sem);
+		flush_workqueue(ipoib_workqueue);
+	}
+
+	ipoib_mcast_stop_thread(dev);
+
+	/*
+	 * Flush the multicast groups first so we stop any multicast joins. The
+	 * completion thread may have already died and we may deadlock waiting
+	 * for the completion thread to finish some multicast joins.
+	 */
+	ipoib_mcast_dev_flush(dev);
+
+	/* Delete broadcast and local addresses since they will be recreated */
+	ipoib_mcast_dev_down(dev);
+
+	ipoib_flush_paths(dev);
+
+	return 0;
+}
+
+static int recvs_pending(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	int pending = 0;
+	int i;
+
+	for (i = 0; i < IPOIB_RX_RING_SIZE; ++i)
+		if (priv->rx_ring[i].skb)
+			++pending;
+
+	return pending;
+}
+
+int ipoib_ib_dev_stop(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ib_qp_attr qp_attr;
+	int attr_mask;
+	unsigned long begin;
+	struct ipoib_buf *tx_req;
+	int i;
+
+	/* Kill the existing QP and allocate a new one */
+	qp_attr.qp_state = IB_QPS_ERR;
+	attr_mask        = IB_QP_STATE;
+	if (ib_modify_qp(priv->qp, &qp_attr, attr_mask))
+		ipoib_warn(priv, "Failed to modify QP to ERROR state\n");
+
+	/* Wait for all sends and receives to complete */
+	begin = jiffies;
+
+	while (priv->tx_head != priv->tx_tail || recvs_pending(dev)) {
+		if (time_after(jiffies, begin + 5 * HZ)) {
+			ipoib_warn(priv, "timing out; %d sends %d receives not completed\n",
+				   priv->tx_head - priv->tx_tail, recvs_pending(dev));
+
+			/*
+			 * assume the HW is wedged and just free up
+			 * all our pending work requests.
+			 */
+			while (priv->tx_tail < priv->tx_head) {
+				tx_req = &priv->tx_ring[priv->tx_tail &
+							(IPOIB_TX_RING_SIZE - 1)];
+				dma_unmap_single(priv->ca->dma_device,
+						 pci_unmap_addr(tx_req, mapping),
+						 tx_req->skb->len,
+						 DMA_TO_DEVICE);
+				dev_kfree_skb_any(tx_req->skb);
+				++priv->tx_tail;
+			}
+
+			for (i = 0; i < IPOIB_RX_RING_SIZE; ++i)
+				if (priv->rx_ring[i].skb) {
+					dma_unmap_single(priv->ca->dma_device,
+							 pci_unmap_addr(&priv->rx_ring[i],
+									mapping),
+							 IPOIB_BUF_SIZE,
+							 DMA_FROM_DEVICE);
+					dev_kfree_skb_any(priv->rx_ring[i].skb);
+					priv->rx_ring[i].skb = NULL;
+				}
+
+			goto timeout;
+		}
+
+		msleep(1);
+	}
+
+	ipoib_dbg(priv, "All sends and receives done.\n");
+
+timeout:
+	qp_attr.qp_state = IB_QPS_RESET;
+	attr_mask        = IB_QP_STATE;
+	if (ib_modify_qp(priv->qp, &qp_attr, attr_mask))
+		ipoib_warn(priv, "Failed to modify QP to RESET state\n");
+
+	/* Wait for all AHs to be reaped */
+	set_bit(IPOIB_STOP_REAPER, &priv->flags);
+	cancel_delayed_work(&priv->ah_reap_task);
+	flush_workqueue(ipoib_workqueue);
+
+	begin = jiffies;
+
+	while (!list_empty(&priv->dead_ahs)) {
+		__ipoib_reap_ah(dev);
+
+		if (time_after(jiffies, begin + HZ)) {
+			ipoib_warn(priv, "timing out; will leak address handles\n");
+			break;
+		}
+
+		msleep(1);
+	}
+
+	return 0;
+}
+
+int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	priv->ca = ca;
+	priv->port = port;
+	priv->qp = NULL;
+
+	if (ipoib_transport_dev_init(dev, ca)) {
+		printk(KERN_WARNING "%s: ipoib_transport_dev_init failed\n", ca->name);
+		return -ENODEV;
+	}
+
+	if (dev->flags & IFF_UP) {
+		if (ipoib_ib_dev_open(dev)) {
+			ipoib_transport_dev_cleanup(dev);
+			return -ENODEV;
+		}
+	}
+
+	return 0;
+}
+
+void ipoib_ib_dev_flush(void *_dev)
+{
+	struct net_device *dev = (struct net_device *)_dev;
+	struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv;
+
+	if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
+		return;
+
+	ipoib_dbg(priv, "flushing\n");
+
+	ipoib_ib_dev_down(dev);
+
+	/*
+	 * The device could have been brought down between the start and when
+	 * we get here, don't bring it back up if it's not configured up
+	 */
+	if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
+		ipoib_ib_dev_up(dev);
+
+	/* Flush any child interfaces too */
+	list_for_each_entry(cpriv, &priv->child_intfs, list)
+		ipoib_ib_dev_flush(&cpriv->dev);
+}
+
+void ipoib_ib_dev_cleanup(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_dbg(priv, "cleaning up ib_dev\n");
+
+	ipoib_mcast_stop_thread(dev);
+
+	/* Delete the broadcast address and the local address */
+	ipoib_mcast_dev_down(dev);
+
+	ipoib_transport_dev_cleanup(dev);
+}
+
+/*
+ * Delayed P_Key Assigment Interim Support
+ *
+ * The following is initial implementation of delayed P_Key assigment
+ * mechanism. It is using the same approach implemented for the multicast
+ * group join. The single goal of this implementation is to quickly address
+ * Bug #2507. This implementation will probably be removed when the P_Key
+ * change async notification is available.
+ */
+int ipoib_open(struct net_device *dev);
+
+static void ipoib_pkey_dev_check_presence(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	u16 pkey_index = 0;
+
+	if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index))
+		clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+	else
+		set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+}
+
+void ipoib_pkey_poll(void *dev_ptr)
+{
+	struct net_device *dev = dev_ptr;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_pkey_dev_check_presence(dev);
+
+	if (test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags))
+		ipoib_open(dev);
+	else {
+		down(&pkey_sem);
+		if (!test_bit(IPOIB_PKEY_STOP, &priv->flags))
+			queue_delayed_work(ipoib_workqueue,
+					   &priv->pkey_task,
+					   HZ);
+		up(&pkey_sem);
+	}
+}
+
+int ipoib_pkey_dev_delay_open(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	/* Look for the interface pkey value in the IB Port P_Key table and */
+	/* set the interface pkey assigment flag                            */
+	ipoib_pkey_dev_check_presence(dev);
+
+	/* P_Key value not assigned yet - start polling */
+	if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
+		down(&pkey_sem);
+		clear_bit(IPOIB_PKEY_STOP, &priv->flags);
+		queue_delayed_work(ipoib_workqueue,
+				   &priv->pkey_task,
+				   HZ);
+		up(&pkey_sem);
+		return 1;
+	}
+
+	return 0;
+}
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
new file mode 100644
index 000000000000..5a3b5c6a4494
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -0,0 +1,1103 @@
+/*
+ * 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.
+ *
+ * $Id: ipoib_main.c 1377 2004-12-23 19:57:12Z roland $
+ */
+
+#include "ipoib.h"
+
+#include <linux/version.h>
+#include <linux/module.h>
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+
+#include <linux/if_arp.h>	/* For ARPHRD_xxx */
+
+#include <linux/ip.h>
+#include <linux/in.h>
+
+MODULE_AUTHOR("Roland Dreier");
+MODULE_DESCRIPTION("IP-over-InfiniBand net driver");
+MODULE_LICENSE("Dual BSD/GPL");
+
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+int ipoib_debug_level;
+
+module_param_named(debug_level, ipoib_debug_level, int, 0644);
+MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
+#endif
+
+static const u8 ipv4_bcast_addr[] = {
+	0x00, 0xff, 0xff, 0xff,
+	0xff, 0x12, 0x40, 0x1b,	0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00,	0xff, 0xff, 0xff, 0xff
+};
+
+struct workqueue_struct *ipoib_workqueue;
+
+static void ipoib_add_one(struct ib_device *device);
+static void ipoib_remove_one(struct ib_device *device);
+
+static struct ib_client ipoib_client = {
+	.name   = "ipoib",
+	.add    = ipoib_add_one,
+	.remove = ipoib_remove_one
+};
+
+int ipoib_open(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_dbg(priv, "bringing up interface\n");
+
+	set_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags);
+
+	if (ipoib_pkey_dev_delay_open(dev))
+		return 0;
+
+	if (ipoib_ib_dev_open(dev))
+		return -EINVAL;
+
+	if (ipoib_ib_dev_up(dev))
+		return -EINVAL;
+
+	if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) {
+		struct ipoib_dev_priv *cpriv;
+
+		/* Bring up any child interfaces too */
+		down(&priv->vlan_mutex);
+		list_for_each_entry(cpriv, &priv->child_intfs, list) {
+			int flags;
+
+			flags = cpriv->dev->flags;
+			if (flags & IFF_UP)
+				continue;
+
+			dev_change_flags(cpriv->dev, flags | IFF_UP);
+		}
+		up(&priv->vlan_mutex);
+	}
+
+	netif_start_queue(dev);
+
+	return 0;
+}
+
+static int ipoib_stop(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_dbg(priv, "stopping interface\n");
+
+	clear_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags);
+
+	netif_stop_queue(dev);
+
+	ipoib_ib_dev_down(dev);
+	ipoib_ib_dev_stop(dev);
+
+	if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) {
+		struct ipoib_dev_priv *cpriv;
+
+		/* Bring down any child interfaces too */
+		down(&priv->vlan_mutex);
+		list_for_each_entry(cpriv, &priv->child_intfs, list) {
+			int flags;
+
+			flags = cpriv->dev->flags;
+			if (!(flags & IFF_UP))
+				continue;
+
+			dev_change_flags(cpriv->dev, flags & ~IFF_UP);
+		}
+		up(&priv->vlan_mutex);
+	}
+
+	return 0;
+}
+
+static int ipoib_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	if (new_mtu > IPOIB_PACKET_SIZE - IPOIB_ENCAP_LEN)
+		return -EINVAL;
+
+	priv->admin_mtu = new_mtu;
+
+	dev->mtu = min(priv->mcast_mtu, priv->admin_mtu);
+
+	return 0;
+}
+
+static struct ipoib_path *__path_find(struct net_device *dev,
+				      union ib_gid *gid)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct rb_node *n = priv->path_tree.rb_node;
+	struct ipoib_path *path;
+	int ret;
+
+	while (n) {
+		path = rb_entry(n, struct ipoib_path, rb_node);
+
+		ret = memcmp(gid->raw, path->pathrec.dgid.raw,
+			     sizeof (union ib_gid));
+
+		if (ret < 0)
+			n = n->rb_left;
+		else if (ret > 0)
+			n = n->rb_right;
+		else
+			return path;
+	}
+
+	return NULL;
+}
+
+static int __path_add(struct net_device *dev, struct ipoib_path *path)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct rb_node **n = &priv->path_tree.rb_node;
+	struct rb_node *pn = NULL;
+	struct ipoib_path *tpath;
+	int ret;
+
+	while (*n) {
+		pn = *n;
+		tpath = rb_entry(pn, struct ipoib_path, rb_node);
+
+		ret = memcmp(path->pathrec.dgid.raw, tpath->pathrec.dgid.raw,
+			     sizeof (union ib_gid));
+		if (ret < 0)
+			n = &pn->rb_left;
+		else if (ret > 0)
+			n = &pn->rb_right;
+		else
+			return -EEXIST;
+	}
+
+	rb_link_node(&path->rb_node, pn, n);
+	rb_insert_color(&path->rb_node, &priv->path_tree);
+
+	list_add_tail(&path->list, &priv->path_list);
+
+	return 0;
+}
+
+static void path_free(struct net_device *dev, struct ipoib_path *path)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_neigh *neigh, *tn;
+	struct sk_buff *skb;
+	unsigned long flags;
+
+	while ((skb = __skb_dequeue(&path->queue)))
+		dev_kfree_skb_irq(skb);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) {
+		/*
+		 * It's safe to call ipoib_put_ah() inside priv->lock
+		 * here, because we know that path->ah will always
+		 * hold one more reference, so ipoib_put_ah() will
+		 * never do more than decrement the ref count.
+		 */
+		if (neigh->ah)
+			ipoib_put_ah(neigh->ah);
+		*to_ipoib_neigh(neigh->neighbour) = NULL;
+		neigh->neighbour->ops->destructor = NULL;
+		kfree(neigh);
+	}
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	if (path->ah)
+		ipoib_put_ah(path->ah);
+
+	kfree(path);
+}
+
+void ipoib_flush_paths(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_path *path, *tp;
+	LIST_HEAD(remove_list);
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	list_splice(&priv->path_list, &remove_list);
+	INIT_LIST_HEAD(&priv->path_list);
+
+	list_for_each_entry(path, &remove_list, list)
+		rb_erase(&path->rb_node, &priv->path_tree);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	list_for_each_entry_safe(path, tp, &remove_list, list) {
+		if (path->query)
+			ib_sa_cancel_query(path->query_id, path->query);
+		wait_for_completion(&path->done);
+		path_free(dev, path);
+	}
+}
+
+static void path_rec_completion(int status,
+				struct ib_sa_path_rec *pathrec,
+				void *path_ptr)
+{
+	struct ipoib_path *path = path_ptr;
+	struct net_device *dev = path->dev;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_ah *ah = NULL;
+	struct ipoib_neigh *neigh;
+	struct sk_buff_head skqueue;
+	struct sk_buff *skb;
+	unsigned long flags;
+
+	if (pathrec)
+		ipoib_dbg(priv, "PathRec LID 0x%04x for GID " IPOIB_GID_FMT "\n",
+			  be16_to_cpu(pathrec->dlid), IPOIB_GID_ARG(pathrec->dgid));
+	else
+		ipoib_dbg(priv, "PathRec status %d for GID " IPOIB_GID_FMT "\n",
+			  status, IPOIB_GID_ARG(path->pathrec.dgid));
+
+	skb_queue_head_init(&skqueue);
+
+	if (!status) {
+		struct ib_ah_attr av = {
+			.dlid 	       = be16_to_cpu(pathrec->dlid),
+			.sl 	       = pathrec->sl,
+			.port_num      = priv->port
+		};
+
+		if (ib_sa_rate_enum_to_int(pathrec->rate) > 0)
+			av.static_rate = (2 * priv->local_rate -
+					  ib_sa_rate_enum_to_int(pathrec->rate) - 1) /
+				(priv->local_rate ? priv->local_rate : 1);
+
+		ipoib_dbg(priv, "static_rate %d for local port %dX, path %dX\n",
+			  av.static_rate, priv->local_rate,
+			  ib_sa_rate_enum_to_int(pathrec->rate));
+
+		ah = ipoib_create_ah(dev, priv->pd, &av);
+	}
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	path->ah = ah;
+
+	if (ah) {
+		path->pathrec = *pathrec;
+
+		ipoib_dbg(priv, "created address handle %p for LID 0x%04x, SL %d\n",
+			  ah, be16_to_cpu(pathrec->dlid), pathrec->sl);
+
+		while ((skb = __skb_dequeue(&path->queue)))
+			__skb_queue_tail(&skqueue, skb);
+
+		list_for_each_entry(neigh, &path->neigh_list, list) {
+			kref_get(&path->ah->ref);
+			neigh->ah = path->ah;
+
+			while ((skb = __skb_dequeue(&neigh->queue)))
+				__skb_queue_tail(&skqueue, skb);
+		}
+	} else
+		path->query = NULL;
+
+	complete(&path->done);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	while ((skb = __skb_dequeue(&skqueue))) {
+		skb->dev = dev;
+		if (dev_queue_xmit(skb))
+			ipoib_warn(priv, "dev_queue_xmit failed "
+				   "to requeue packet\n");
+	}
+}
+
+static struct ipoib_path *path_rec_create(struct net_device *dev,
+					  union ib_gid *gid)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_path *path;
+
+	path = kmalloc(sizeof *path, GFP_ATOMIC);
+	if (!path)
+		return NULL;
+
+	path->dev          = dev;
+	path->pathrec.dlid = 0;
+	path->ah           = NULL;
+
+	skb_queue_head_init(&path->queue);
+
+	INIT_LIST_HEAD(&path->neigh_list);
+	path->query = NULL;
+	init_completion(&path->done);
+
+	memcpy(path->pathrec.dgid.raw, gid->raw, sizeof (union ib_gid));
+	path->pathrec.sgid      = priv->local_gid;
+	path->pathrec.pkey      = cpu_to_be16(priv->pkey);
+	path->pathrec.numb_path = 1;
+
+	return path;
+}
+
+static int path_rec_start(struct net_device *dev,
+			  struct ipoib_path *path)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_dbg(priv, "Start path record lookup for " IPOIB_GID_FMT "\n",
+		  IPOIB_GID_ARG(path->pathrec.dgid));
+
+	path->query_id =
+		ib_sa_path_rec_get(priv->ca, priv->port,
+				   &path->pathrec,
+				   IB_SA_PATH_REC_DGID		|
+				   IB_SA_PATH_REC_SGID		|
+				   IB_SA_PATH_REC_NUMB_PATH	|
+				   IB_SA_PATH_REC_PKEY,
+				   1000, GFP_ATOMIC,
+				   path_rec_completion,
+				   path, &path->query);
+	if (path->query_id < 0) {
+		ipoib_warn(priv, "ib_sa_path_rec_get failed\n");
+		path->query = NULL;
+		return path->query_id;
+	}
+
+	return 0;
+}
+
+static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_path *path;
+	struct ipoib_neigh *neigh;
+
+	neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
+	if (!neigh) {
+		++priv->stats.tx_dropped;
+		dev_kfree_skb_any(skb);
+		return;
+	}
+
+	skb_queue_head_init(&neigh->queue);
+	neigh->neighbour = skb->dst->neighbour;
+	*to_ipoib_neigh(skb->dst->neighbour) = neigh;
+
+	/*
+	 * We can only be called from ipoib_start_xmit, so we're
+	 * inside tx_lock -- no need to save/restore flags.
+	 */
+	spin_lock(&priv->lock);
+
+	path = __path_find(dev, (union ib_gid *) (skb->dst->neighbour->ha + 4));
+	if (!path) {
+		path = path_rec_create(dev,
+				       (union ib_gid *) (skb->dst->neighbour->ha + 4));
+		if (!path)
+			goto err;
+
+		__path_add(dev, path);
+	}
+
+	list_add_tail(&neigh->list, &path->neigh_list);
+
+	if (path->pathrec.dlid) {
+		kref_get(&path->ah->ref);
+		neigh->ah = path->ah;
+
+		ipoib_send(dev, skb, path->ah,
+			   be32_to_cpup((__be32 *) skb->dst->neighbour->ha));
+	} else {
+		neigh->ah  = NULL;
+		if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
+			__skb_queue_tail(&neigh->queue, skb);
+		} else {
+			++priv->stats.tx_dropped;
+			dev_kfree_skb_any(skb);
+		}
+
+		if (!path->query && path_rec_start(dev, path))
+			goto err;
+	}
+
+	spin_unlock(&priv->lock);
+	return;
+
+err:
+	*to_ipoib_neigh(skb->dst->neighbour) = NULL;
+	list_del(&neigh->list);
+	neigh->neighbour->ops->destructor = NULL;
+	kfree(neigh);
+
+	++priv->stats.tx_dropped;
+	dev_kfree_skb_any(skb);
+
+	spin_unlock(&priv->lock);
+}
+
+static void path_lookup(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(skb->dev);
+
+	/* Look up path record for unicasts */
+	if (skb->dst->neighbour->ha[4] != 0xff) {
+		neigh_add_path(skb, dev);
+		return;
+	}
+
+	/* Add in the P_Key for multicasts */
+	skb->dst->neighbour->ha[8] = (priv->pkey >> 8) & 0xff;
+	skb->dst->neighbour->ha[9] = priv->pkey & 0xff;
+	ipoib_mcast_send(dev, (union ib_gid *) (skb->dst->neighbour->ha + 4), skb);
+}
+
+static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
+			     struct ipoib_pseudoheader *phdr)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_path *path;
+
+	/*
+	 * We can only be called from ipoib_start_xmit, so we're
+	 * inside tx_lock -- no need to save/restore flags.
+	 */
+	spin_lock(&priv->lock);
+
+	path = __path_find(dev, (union ib_gid *) (phdr->hwaddr + 4));
+	if (!path) {
+		path = path_rec_create(dev,
+				       (union ib_gid *) (phdr->hwaddr + 4));
+		if (path) {
+			/* put pseudoheader back on for next time */
+			skb_push(skb, sizeof *phdr);
+			__skb_queue_tail(&path->queue, skb);
+
+			if (path_rec_start(dev, path)) {
+				spin_unlock(&priv->lock);
+				path_free(dev, path);
+				return;
+			} else
+				__path_add(dev, path);
+		} else {
+			++priv->stats.tx_dropped;
+			dev_kfree_skb_any(skb);
+		}
+
+		spin_unlock(&priv->lock);
+		return;
+	}
+
+	if (path->pathrec.dlid) {
+		ipoib_dbg(priv, "Send unicast ARP to %04x\n",
+			  be16_to_cpu(path->pathrec.dlid));
+
+		ipoib_send(dev, skb, path->ah,
+			   be32_to_cpup((__be32 *) phdr->hwaddr));
+	} else if ((path->query || !path_rec_start(dev, path)) &&
+		   skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
+		/* put pseudoheader back on for next time */
+		skb_push(skb, sizeof *phdr);
+		__skb_queue_tail(&path->queue, skb);
+	} else {
+		++priv->stats.tx_dropped;
+		dev_kfree_skb_any(skb);
+	}
+
+	spin_unlock(&priv->lock);
+}
+
+static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_neigh *neigh;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	if (!spin_trylock(&priv->tx_lock)) {
+		local_irq_restore(flags);
+		return NETDEV_TX_LOCKED;
+	}
+
+	/*
+	 * Check if our queue is stopped.  Since we have the LLTX bit
+	 * set, we can't rely on netif_stop_queue() preventing our
+	 * xmit function from being called with a full queue.
+	 */
+	if (unlikely(netif_queue_stopped(dev))) {
+		spin_unlock_irqrestore(&priv->tx_lock, flags);
+		return NETDEV_TX_BUSY;
+	}
+
+	if (skb->dst && skb->dst->neighbour) {
+		if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) {
+			path_lookup(skb, dev);
+			goto out;
+		}
+
+		neigh = *to_ipoib_neigh(skb->dst->neighbour);
+
+		if (likely(neigh->ah)) {
+			ipoib_send(dev, skb, neigh->ah,
+				   be32_to_cpup((__be32 *) skb->dst->neighbour->ha));
+			goto out;
+		}
+
+		if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
+			spin_lock(&priv->lock);
+			__skb_queue_tail(&neigh->queue, skb);
+			spin_unlock(&priv->lock);
+		} else {
+			++priv->stats.tx_dropped;
+			dev_kfree_skb_any(skb);
+		}
+	} else {
+		struct ipoib_pseudoheader *phdr =
+			(struct ipoib_pseudoheader *) skb->data;
+		skb_pull(skb, sizeof *phdr);
+
+		if (phdr->hwaddr[4] == 0xff) {
+			/* Add in the P_Key for multicast*/
+			phdr->hwaddr[8] = (priv->pkey >> 8) & 0xff;
+			phdr->hwaddr[9] = priv->pkey & 0xff;
+
+			ipoib_mcast_send(dev, (union ib_gid *) (phdr->hwaddr + 4), skb);
+		} else {
+			/* unicast GID -- should be ARP reply */
+
+			if (be16_to_cpup((u16 *) skb->data) != ETH_P_ARP) {
+				ipoib_warn(priv, "Unicast, no %s: type %04x, QPN %06x "
+					   IPOIB_GID_FMT "\n",
+					   skb->dst ? "neigh" : "dst",
+					   be16_to_cpup((u16 *) skb->data),
+					   be32_to_cpup((u32 *) phdr->hwaddr),
+					   IPOIB_GID_ARG(*(union ib_gid *) (phdr->hwaddr + 4)));
+				dev_kfree_skb_any(skb);
+				++priv->stats.tx_dropped;
+				goto out;
+			}
+
+			unicast_arp_send(skb, dev, phdr);
+		}
+	}
+
+out:
+	spin_unlock_irqrestore(&priv->tx_lock, flags);
+
+	return NETDEV_TX_OK;
+}
+
+static struct net_device_stats *ipoib_get_stats(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	return &priv->stats;
+}
+
+static void ipoib_timeout(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_warn(priv, "transmit timeout: latency %ld\n",
+		   jiffies - dev->trans_start);
+	/* XXX reset QP, etc. */
+}
+
+static int ipoib_hard_header(struct sk_buff *skb,
+			     struct net_device *dev,
+			     unsigned short type,
+			     void *daddr, void *saddr, unsigned len)
+{
+	struct ipoib_header *header;
+
+	header = (struct ipoib_header *) skb_push(skb, sizeof *header);
+
+	header->proto = htons(type);
+	header->reserved = 0;
+
+	/*
+	 * If we don't have a neighbour structure, stuff the
+	 * destination address onto the front of the skb so we can
+	 * figure out where to send the packet later.
+	 */
+	if (!skb->dst || !skb->dst->neighbour) {
+		struct ipoib_pseudoheader *phdr =
+			(struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr);
+		memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);
+	}
+
+	return 0;
+}
+
+static void ipoib_set_mcast_list(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	schedule_work(&priv->restart_task);
+}
+
+static void ipoib_neigh_destructor(struct neighbour *n)
+{
+	struct ipoib_neigh *neigh;
+	struct ipoib_dev_priv *priv = netdev_priv(n->dev);
+	unsigned long flags;
+	struct ipoib_ah *ah = NULL;
+
+	ipoib_dbg(priv,
+		  "neigh_destructor for %06x " IPOIB_GID_FMT "\n",
+		  be32_to_cpup((__be32 *) n->ha),
+		  IPOIB_GID_ARG(*((union ib_gid *) (n->ha + 4))));
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	neigh = *to_ipoib_neigh(n);
+	if (neigh) {
+		if (neigh->ah)
+			ah = neigh->ah;
+		list_del(&neigh->list);
+		*to_ipoib_neigh(n) = NULL;
+		kfree(neigh);
+	}
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	if (ah)
+		ipoib_put_ah(ah);
+}
+
+static int ipoib_neigh_setup(struct neighbour *neigh)
+{
+	/*
+	 * Is this kosher?  I can't find anybody in the kernel that
+	 * sets neigh->destructor, so we should be able to set it here
+	 * without trouble.
+	 */
+	neigh->ops->destructor = ipoib_neigh_destructor;
+
+	return 0;
+}
+
+static int ipoib_neigh_setup_dev(struct net_device *dev, struct neigh_parms *parms)
+{
+	parms->neigh_setup = ipoib_neigh_setup;
+
+	return 0;
+}
+
+int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	/* Allocate RX/TX "rings" to hold queued skbs */
+
+	priv->rx_ring =	kmalloc(IPOIB_RX_RING_SIZE * sizeof (struct ipoib_buf),
+				GFP_KERNEL);
+	if (!priv->rx_ring) {
+		printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n",
+		       ca->name, IPOIB_RX_RING_SIZE);
+		goto out;
+	}
+	memset(priv->rx_ring, 0,
+	       IPOIB_RX_RING_SIZE * sizeof (struct ipoib_buf));
+
+	priv->tx_ring = kmalloc(IPOIB_TX_RING_SIZE * sizeof (struct ipoib_buf),
+				GFP_KERNEL);
+	if (!priv->tx_ring) {
+		printk(KERN_WARNING "%s: failed to allocate TX ring (%d entries)\n",
+		       ca->name, IPOIB_TX_RING_SIZE);
+		goto out_rx_ring_cleanup;
+	}
+	memset(priv->tx_ring, 0,
+	       IPOIB_TX_RING_SIZE * sizeof (struct ipoib_buf));
+
+	/* priv->tx_head & tx_tail are already 0 */
+
+	if (ipoib_ib_dev_init(dev, ca, port))
+		goto out_tx_ring_cleanup;
+
+	return 0;
+
+out_tx_ring_cleanup:
+	kfree(priv->tx_ring);
+
+out_rx_ring_cleanup:
+	kfree(priv->rx_ring);
+
+out:
+	return -ENOMEM;
+}
+
+void ipoib_dev_cleanup(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv, *tcpriv;
+
+	ipoib_delete_debug_file(dev);
+
+	/* Delete any child interfaces first */
+	list_for_each_entry_safe(cpriv, tcpriv, &priv->child_intfs, list) {
+		unregister_netdev(cpriv->dev);
+		ipoib_dev_cleanup(cpriv->dev);
+		free_netdev(cpriv->dev);
+	}
+
+	ipoib_ib_dev_cleanup(dev);
+
+	if (priv->rx_ring) {
+		kfree(priv->rx_ring);
+		priv->rx_ring = NULL;
+	}
+
+	if (priv->tx_ring) {
+		kfree(priv->tx_ring);
+		priv->tx_ring = NULL;
+	}
+}
+
+static void ipoib_setup(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	dev->open 		 = ipoib_open;
+	dev->stop 		 = ipoib_stop;
+	dev->change_mtu 	 = ipoib_change_mtu;
+	dev->hard_start_xmit 	 = ipoib_start_xmit;
+	dev->get_stats 		 = ipoib_get_stats;
+	dev->tx_timeout 	 = ipoib_timeout;
+	dev->hard_header 	 = ipoib_hard_header;
+	dev->set_multicast_list  = ipoib_set_mcast_list;
+	dev->neigh_setup         = ipoib_neigh_setup_dev;
+
+	dev->watchdog_timeo 	 = HZ;
+
+	dev->rebuild_header 	 = NULL;
+	dev->set_mac_address 	 = NULL;
+	dev->header_cache_update = NULL;
+
+	dev->flags              |= IFF_BROADCAST | IFF_MULTICAST;
+
+	/*
+	 * We add in INFINIBAND_ALEN to allow for the destination
+	 * address "pseudoheader" for skbs without neighbour struct.
+	 */
+	dev->hard_header_len 	 = IPOIB_ENCAP_LEN + INFINIBAND_ALEN;
+	dev->addr_len 		 = INFINIBAND_ALEN;
+	dev->type 		 = ARPHRD_INFINIBAND;
+	dev->tx_queue_len 	 = IPOIB_TX_RING_SIZE * 2;
+	dev->features            = NETIF_F_VLAN_CHALLENGED | NETIF_F_LLTX;
+
+	/* MTU will be reset when mcast join happens */
+	dev->mtu 		 = IPOIB_PACKET_SIZE - IPOIB_ENCAP_LEN;
+	priv->mcast_mtu 	 = priv->admin_mtu = dev->mtu;
+
+	memcpy(dev->broadcast, ipv4_bcast_addr, INFINIBAND_ALEN);
+
+	netif_carrier_off(dev);
+
+	SET_MODULE_OWNER(dev);
+
+	priv->dev = dev;
+
+	spin_lock_init(&priv->lock);
+	spin_lock_init(&priv->tx_lock);
+
+	init_MUTEX(&priv->mcast_mutex);
+	init_MUTEX(&priv->vlan_mutex);
+
+	INIT_LIST_HEAD(&priv->path_list);
+	INIT_LIST_HEAD(&priv->child_intfs);
+	INIT_LIST_HEAD(&priv->dead_ahs);
+	INIT_LIST_HEAD(&priv->multicast_list);
+
+	INIT_WORK(&priv->pkey_task,    ipoib_pkey_poll,          priv->dev);
+	INIT_WORK(&priv->mcast_task,   ipoib_mcast_join_task,    priv->dev);
+	INIT_WORK(&priv->flush_task,   ipoib_ib_dev_flush,       priv->dev);
+	INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task, priv->dev);
+	INIT_WORK(&priv->ah_reap_task, ipoib_reap_ah,            priv->dev);
+}
+
+struct ipoib_dev_priv *ipoib_intf_alloc(const char *name)
+{
+	struct net_device *dev;
+
+	dev = alloc_netdev((int) sizeof (struct ipoib_dev_priv), name,
+			   ipoib_setup);
+	if (!dev)
+		return NULL;
+
+	return netdev_priv(dev);
+}
+
+static ssize_t show_pkey(struct class_device *cdev, char *buf)
+{
+	struct ipoib_dev_priv *priv =
+		netdev_priv(container_of(cdev, struct net_device, class_dev));
+
+	return sprintf(buf, "0x%04x\n", priv->pkey);
+}
+static CLASS_DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
+
+static ssize_t create_child(struct class_device *cdev,
+			    const char *buf, size_t count)
+{
+	int pkey;
+	int ret;
+
+	if (sscanf(buf, "%i", &pkey) != 1)
+		return -EINVAL;
+
+	if (pkey < 0 || pkey > 0xffff)
+		return -EINVAL;
+
+	ret = ipoib_vlan_add(container_of(cdev, struct net_device, class_dev),
+			     pkey);
+
+	return ret ? ret : count;
+}
+static CLASS_DEVICE_ATTR(create_child, S_IWUGO, NULL, create_child);
+
+static ssize_t delete_child(struct class_device *cdev,
+			    const char *buf, size_t count)
+{
+	int pkey;
+	int ret;
+
+	if (sscanf(buf, "%i", &pkey) != 1)
+		return -EINVAL;
+
+	if (pkey < 0 || pkey > 0xffff)
+		return -EINVAL;
+
+	ret = ipoib_vlan_delete(container_of(cdev, struct net_device, class_dev),
+				pkey);
+
+	return ret ? ret : count;
+
+}
+static CLASS_DEVICE_ATTR(delete_child, S_IWUGO, NULL, delete_child);
+
+int ipoib_add_pkey_attr(struct net_device *dev)
+{
+	return class_device_create_file(&dev->class_dev,
+					&class_device_attr_pkey);
+}
+
+static struct net_device *ipoib_add_port(const char *format,
+					 struct ib_device *hca, u8 port)
+{
+	struct ipoib_dev_priv *priv;
+	int result = -ENOMEM;
+
+	priv = ipoib_intf_alloc(format);
+	if (!priv)
+		goto alloc_mem_failed;
+
+	SET_NETDEV_DEV(priv->dev, hca->dma_device);
+
+	result = ib_query_pkey(hca, port, 0, &priv->pkey);
+	if (result) {
+		printk(KERN_WARNING "%s: ib_query_pkey port %d failed (ret = %d)\n",
+		       hca->name, port, result);
+		goto alloc_mem_failed;
+	}
+
+	priv->dev->broadcast[8] = priv->pkey >> 8;
+	priv->dev->broadcast[9] = priv->pkey & 0xff;
+
+	result = ib_query_gid(hca, port, 0, &priv->local_gid);
+	if (result) {
+		printk(KERN_WARNING "%s: ib_query_gid port %d failed (ret = %d)\n",
+		       hca->name, port, result);
+		goto alloc_mem_failed;
+	} else
+		memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid));
+
+
+	result = ipoib_dev_init(priv->dev, hca, port);
+	if (result < 0) {
+		printk(KERN_WARNING "%s: failed to initialize port %d (ret = %d)\n",
+		       hca->name, port, result);
+		goto device_init_failed;
+	}
+
+	INIT_IB_EVENT_HANDLER(&priv->event_handler,
+			      priv->ca, ipoib_event);
+	result = ib_register_event_handler(&priv->event_handler);
+	if (result < 0) {
+		printk(KERN_WARNING "%s: ib_register_event_handler failed for "
+		       "port %d (ret = %d)\n",
+		       hca->name, port, result);
+		goto event_failed;
+	}
+
+	result = register_netdev(priv->dev);
+	if (result) {
+		printk(KERN_WARNING "%s: couldn't register ipoib port %d; error %d\n",
+		       hca->name, port, result);
+		goto register_failed;
+	}
+
+	if (ipoib_create_debug_file(priv->dev))
+		goto debug_failed;
+
+	if (ipoib_add_pkey_attr(priv->dev))
+		goto sysfs_failed;
+	if (class_device_create_file(&priv->dev->class_dev,
+				     &class_device_attr_create_child))
+		goto sysfs_failed;
+	if (class_device_create_file(&priv->dev->class_dev,
+				     &class_device_attr_delete_child))
+		goto sysfs_failed;
+
+	return priv->dev;
+
+sysfs_failed:
+	ipoib_delete_debug_file(priv->dev);
+
+debug_failed:
+	unregister_netdev(priv->dev);
+
+register_failed:
+	ib_unregister_event_handler(&priv->event_handler);
+
+event_failed:
+	ipoib_dev_cleanup(priv->dev);
+
+device_init_failed:
+	free_netdev(priv->dev);
+
+alloc_mem_failed:
+	return ERR_PTR(result);
+}
+
+static void ipoib_add_one(struct ib_device *device)
+{
+	struct list_head *dev_list;
+	struct net_device *dev;
+	struct ipoib_dev_priv *priv;
+	int s, e, p;
+
+	dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL);
+	if (!dev_list)
+		return;
+
+	INIT_LIST_HEAD(dev_list);
+
+	if (device->node_type == IB_NODE_SWITCH) {
+		s = 0;
+		e = 0;
+	} else {
+		s = 1;
+		e = device->phys_port_cnt;
+	}
+
+	for (p = s; p <= e; ++p) {
+		dev = ipoib_add_port("ib%d", device, p);
+		if (!IS_ERR(dev)) {
+			priv = netdev_priv(dev);
+			list_add_tail(&priv->list, dev_list);
+		}
+	}
+
+	ib_set_client_data(device, &ipoib_client, dev_list);
+}
+
+static void ipoib_remove_one(struct ib_device *device)
+{
+	struct ipoib_dev_priv *priv, *tmp;
+	struct list_head *dev_list;
+
+	dev_list = ib_get_client_data(device, &ipoib_client);
+
+	list_for_each_entry_safe(priv, tmp, dev_list, list) {
+		ib_unregister_event_handler(&priv->event_handler);
+
+		unregister_netdev(priv->dev);
+		ipoib_dev_cleanup(priv->dev);
+		free_netdev(priv->dev);
+	}
+}
+
+static int __init ipoib_init_module(void)
+{
+	int ret;
+
+	ret = ipoib_register_debugfs();
+	if (ret)
+		return ret;
+
+	/*
+	 * We create our own workqueue mainly because we want to be
+	 * able to flush it when devices are being removed.  We can't
+	 * use schedule_work()/flush_scheduled_work() because both
+	 * unregister_netdev() and linkwatch_event take the rtnl lock,
+	 * so flush_scheduled_work() can deadlock during device
+	 * removal.
+	 */
+	ipoib_workqueue = create_singlethread_workqueue("ipoib");
+	if (!ipoib_workqueue) {
+		ret = -ENOMEM;
+		goto err_fs;
+	}
+
+	ret = ib_register_client(&ipoib_client);
+	if (ret)
+		goto err_wq;
+
+	return 0;
+
+err_fs:
+	ipoib_unregister_debugfs();
+
+err_wq:
+	destroy_workqueue(ipoib_workqueue);
+
+	return ret;
+}
+
+static void __exit ipoib_cleanup_module(void)
+{
+	ipoib_unregister_debugfs();
+	ib_unregister_client(&ipoib_client);
+	destroy_workqueue(ipoib_workqueue);
+}
+
+module_init(ipoib_init_module);
+module_exit(ipoib_cleanup_module);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
new file mode 100644
index 000000000000..f46932dc81c9
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -0,0 +1,991 @@
+/*
+ * Copyright (c) 2004, 2005 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.
+ *
+ * $Id: ipoib_multicast.c 1362 2004-12-18 15:56:29Z roland $
+ */
+
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/igmp.h>
+#include <linux/inetdevice.h>
+#include <linux/delay.h>
+#include <linux/completion.h>
+
+#include "ipoib.h"
+
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+static int mcast_debug_level;
+
+module_param(mcast_debug_level, int, 0644);
+MODULE_PARM_DESC(mcast_debug_level,
+		 "Enable multicast debug tracing if > 0");
+#endif
+
+static DECLARE_MUTEX(mcast_mutex);
+
+/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
+struct ipoib_mcast {
+	struct ib_sa_mcmember_rec mcmember;
+	struct ipoib_ah          *ah;
+
+	struct rb_node    rb_node;
+	struct list_head  list;
+	struct completion done;
+
+	int                 query_id;
+	struct ib_sa_query *query;
+
+	unsigned long created;
+	unsigned long backoff;
+
+	unsigned long flags;
+	unsigned char logcount;
+
+	struct list_head  neigh_list;
+
+	struct sk_buff_head pkt_queue;
+
+	struct net_device *dev;
+};
+
+struct ipoib_mcast_iter {
+	struct net_device *dev;
+	union ib_gid       mgid;
+	unsigned long      created;
+	unsigned int       queuelen;
+	unsigned int       complete;
+	unsigned int       send_only;
+};
+
+static void ipoib_mcast_free(struct ipoib_mcast *mcast)
+{
+	struct net_device *dev = mcast->dev;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_neigh *neigh, *tmp;
+	unsigned long flags;
+	LIST_HEAD(ah_list);
+	struct ipoib_ah *ah, *tah;
+
+	ipoib_dbg_mcast(netdev_priv(dev),
+			"deleting multicast group " IPOIB_GID_FMT "\n",
+			IPOIB_GID_ARG(mcast->mcmember.mgid));
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	list_for_each_entry_safe(neigh, tmp, &mcast->neigh_list, list) {
+		if (neigh->ah)
+			list_add_tail(&neigh->ah->list, &ah_list);
+		*to_ipoib_neigh(neigh->neighbour) = NULL;
+		neigh->neighbour->ops->destructor = NULL;
+		kfree(neigh);
+	}
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	list_for_each_entry_safe(ah, tah, &ah_list, list)
+		ipoib_put_ah(ah);
+
+	if (mcast->ah)
+		ipoib_put_ah(mcast->ah);
+
+	while (!skb_queue_empty(&mcast->pkt_queue)) {
+		struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
+
+		skb->dev = dev;
+		dev_kfree_skb_any(skb);
+	}
+
+	kfree(mcast);
+}
+
+static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev,
+					     int can_sleep)
+{
+	struct ipoib_mcast *mcast;
+
+	mcast = kmalloc(sizeof (*mcast), can_sleep ? GFP_KERNEL : GFP_ATOMIC);
+	if (!mcast)
+		return NULL;
+
+	memset(mcast, 0, sizeof (*mcast));
+
+	init_completion(&mcast->done);
+
+	mcast->dev = dev;
+	mcast->created = jiffies;
+	mcast->backoff = HZ;
+	mcast->logcount = 0;
+
+	INIT_LIST_HEAD(&mcast->list);
+	INIT_LIST_HEAD(&mcast->neigh_list);
+	skb_queue_head_init(&mcast->pkt_queue);
+
+	mcast->ah    = NULL;
+	mcast->query = NULL;
+
+	return mcast;
+}
+
+static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, union ib_gid *mgid)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct rb_node *n = priv->multicast_tree.rb_node;
+
+	while (n) {
+		struct ipoib_mcast *mcast;
+		int ret;
+
+		mcast = rb_entry(n, struct ipoib_mcast, rb_node);
+
+		ret = memcmp(mgid->raw, mcast->mcmember.mgid.raw,
+			     sizeof (union ib_gid));
+		if (ret < 0)
+			n = n->rb_left;
+		else if (ret > 0)
+			n = n->rb_right;
+		else
+			return mcast;
+	}
+
+	return NULL;
+}
+
+static int __ipoib_mcast_add(struct net_device *dev, struct ipoib_mcast *mcast)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct rb_node **n = &priv->multicast_tree.rb_node, *pn = NULL;
+
+	while (*n) {
+		struct ipoib_mcast *tmcast;
+		int ret;
+
+		pn = *n;
+		tmcast = rb_entry(pn, struct ipoib_mcast, rb_node);
+
+		ret = memcmp(mcast->mcmember.mgid.raw, tmcast->mcmember.mgid.raw,
+			     sizeof (union ib_gid));
+		if (ret < 0)
+			n = &pn->rb_left;
+		else if (ret > 0)
+			n = &pn->rb_right;
+		else
+			return -EEXIST;
+	}
+
+	rb_link_node(&mcast->rb_node, pn, n);
+	rb_insert_color(&mcast->rb_node, &priv->multicast_tree);
+
+	return 0;
+}
+
+static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
+				   struct ib_sa_mcmember_rec *mcmember)
+{
+	struct net_device *dev = mcast->dev;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	int ret;
+
+	mcast->mcmember = *mcmember;
+
+	/* Set the cached Q_Key before we attach if it's the broadcast group */
+	if (!memcmp(mcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
+		    sizeof (union ib_gid))) {
+		priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey);
+		priv->tx_wr.wr.ud.remote_qkey = priv->qkey;
+	}
+
+	if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
+		if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) {
+			ipoib_warn(priv, "multicast group " IPOIB_GID_FMT
+				   " already attached\n",
+				   IPOIB_GID_ARG(mcast->mcmember.mgid));
+
+			return 0;
+		}
+
+		ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid),
+					 &mcast->mcmember.mgid);
+		if (ret < 0) {
+			ipoib_warn(priv, "couldn't attach QP to multicast group "
+				   IPOIB_GID_FMT "\n",
+				   IPOIB_GID_ARG(mcast->mcmember.mgid));
+
+			clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags);
+			return ret;
+		}
+	}
+
+	{
+		struct ib_ah_attr av = {
+			.dlid	       = be16_to_cpu(mcast->mcmember.mlid),
+			.port_num      = priv->port,
+			.sl	       = mcast->mcmember.sl,
+			.ah_flags      = IB_AH_GRH,
+			.grh	       = {
+				.flow_label    = be32_to_cpu(mcast->mcmember.flow_label),
+				.hop_limit     = mcast->mcmember.hop_limit,
+				.sgid_index    = 0,
+				.traffic_class = mcast->mcmember.traffic_class
+			}
+		};
+
+		av.grh.dgid = mcast->mcmember.mgid;
+
+		if (ib_sa_rate_enum_to_int(mcast->mcmember.rate) > 0)
+			av.static_rate = (2 * priv->local_rate -
+					  ib_sa_rate_enum_to_int(mcast->mcmember.rate) - 1) /
+				(priv->local_rate ? priv->local_rate : 1);
+
+		ipoib_dbg_mcast(priv, "static_rate %d for local port %dX, mcmember %dX\n",
+				av.static_rate, priv->local_rate,
+				ib_sa_rate_enum_to_int(mcast->mcmember.rate));
+
+		mcast->ah = ipoib_create_ah(dev, priv->pd, &av);
+		if (!mcast->ah) {
+			ipoib_warn(priv, "ib_address_create failed\n");
+		} else {
+			ipoib_dbg_mcast(priv, "MGID " IPOIB_GID_FMT
+					" AV %p, LID 0x%04x, SL %d\n",
+					IPOIB_GID_ARG(mcast->mcmember.mgid),
+					mcast->ah->ah,
+					be16_to_cpu(mcast->mcmember.mlid),
+					mcast->mcmember.sl);
+		}
+	}
+
+	/* actually send any queued packets */
+	while (!skb_queue_empty(&mcast->pkt_queue)) {
+		struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
+
+		skb->dev = dev;
+
+		if (!skb->dst || !skb->dst->neighbour) {
+			/* put pseudoheader back on for next time */
+			skb_push(skb, sizeof (struct ipoib_pseudoheader));
+		}
+
+		if (dev_queue_xmit(skb))
+			ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n");
+	}
+
+	return 0;
+}
+
+static void
+ipoib_mcast_sendonly_join_complete(int status,
+				   struct ib_sa_mcmember_rec *mcmember,
+				   void *mcast_ptr)
+{
+	struct ipoib_mcast *mcast = mcast_ptr;
+	struct net_device *dev = mcast->dev;
+
+	if (!status)
+		ipoib_mcast_join_finish(mcast, mcmember);
+	else {
+		if (mcast->logcount++ < 20)
+			ipoib_dbg_mcast(netdev_priv(dev), "multicast join failed for "
+					IPOIB_GID_FMT ", status %d\n",
+					IPOIB_GID_ARG(mcast->mcmember.mgid), status);
+
+		/* Flush out any queued packets */
+		while (!skb_queue_empty(&mcast->pkt_queue)) {
+			struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
+
+			skb->dev = dev;
+
+			dev_kfree_skb_any(skb);
+		}
+
+		/* Clear the busy flag so we try again */
+		clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags);
+	}
+
+	complete(&mcast->done);
+}
+
+static int ipoib_mcast_sendonly_join(struct ipoib_mcast *mcast)
+{
+	struct net_device *dev = mcast->dev;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ib_sa_mcmember_rec rec = {
+#if 0				/* Some SMs don't support send-only yet */
+		.join_state = 4
+#else
+		.join_state = 1
+#endif
+	};
+	int ret = 0;
+
+	if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) {
+		ipoib_dbg_mcast(priv, "device shutting down, no multicast joins\n");
+		return -ENODEV;
+	}
+
+	if (test_and_set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) {
+		ipoib_dbg_mcast(priv, "multicast entry busy, skipping\n");
+		return -EBUSY;
+	}
+
+	rec.mgid     = mcast->mcmember.mgid;
+	rec.port_gid = priv->local_gid;
+	rec.pkey     = be16_to_cpu(priv->pkey);
+
+	ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec,
+				     IB_SA_MCMEMBER_REC_MGID		|
+				     IB_SA_MCMEMBER_REC_PORT_GID	|
+				     IB_SA_MCMEMBER_REC_PKEY		|
+				     IB_SA_MCMEMBER_REC_JOIN_STATE,
+				     1000, GFP_ATOMIC,
+				     ipoib_mcast_sendonly_join_complete,
+				     mcast, &mcast->query);
+	if (ret < 0) {
+		ipoib_warn(priv, "ib_sa_mcmember_rec_set failed (ret = %d)\n",
+			   ret);
+	} else {
+		ipoib_dbg_mcast(priv, "no multicast record for " IPOIB_GID_FMT
+				", starting join\n",
+				IPOIB_GID_ARG(mcast->mcmember.mgid));
+
+		mcast->query_id = ret;
+	}
+
+	return ret;
+}
+
+static void ipoib_mcast_join_complete(int status,
+				      struct ib_sa_mcmember_rec *mcmember,
+				      void *mcast_ptr)
+{
+	struct ipoib_mcast *mcast = mcast_ptr;
+	struct net_device *dev = mcast->dev;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_dbg_mcast(priv, "join completion for " IPOIB_GID_FMT
+			" (status %d)\n",
+			IPOIB_GID_ARG(mcast->mcmember.mgid), status);
+
+	if (!status && !ipoib_mcast_join_finish(mcast, mcmember)) {
+		mcast->backoff = HZ;
+		down(&mcast_mutex);
+		if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
+			queue_work(ipoib_workqueue, &priv->mcast_task);
+		up(&mcast_mutex);
+		complete(&mcast->done);
+		return;
+	}
+
+	if (status == -EINTR) {
+		complete(&mcast->done);
+		return;
+	}
+
+	if (status && mcast->logcount++ < 20) {
+		if (status == -ETIMEDOUT || status == -EINTR) {
+			ipoib_dbg_mcast(priv, "multicast join failed for " IPOIB_GID_FMT
+					", status %d\n",
+					IPOIB_GID_ARG(mcast->mcmember.mgid),
+					status);
+		} else {
+			ipoib_warn(priv, "multicast join failed for "
+				   IPOIB_GID_FMT ", status %d\n",
+				   IPOIB_GID_ARG(mcast->mcmember.mgid),
+				   status);
+		}
+	}
+
+	mcast->backoff *= 2;
+	if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS)
+		mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS;
+
+	mcast->query = NULL;
+
+	down(&mcast_mutex);
+	if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) {
+		if (status == -ETIMEDOUT)
+			queue_work(ipoib_workqueue, &priv->mcast_task);
+		else
+			queue_delayed_work(ipoib_workqueue, &priv->mcast_task,
+					   mcast->backoff * HZ);
+	} else
+		complete(&mcast->done);
+	up(&mcast_mutex);
+
+	return;
+}
+
+static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast,
+			     int create)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ib_sa_mcmember_rec rec = {
+		.join_state = 1
+	};
+	ib_sa_comp_mask comp_mask;
+	int ret = 0;
+
+	ipoib_dbg_mcast(priv, "joining MGID " IPOIB_GID_FMT "\n",
+			IPOIB_GID_ARG(mcast->mcmember.mgid));
+
+	rec.mgid     = mcast->mcmember.mgid;
+	rec.port_gid = priv->local_gid;
+	rec.pkey     = be16_to_cpu(priv->pkey);
+
+	comp_mask =
+		IB_SA_MCMEMBER_REC_MGID		|
+		IB_SA_MCMEMBER_REC_PORT_GID	|
+		IB_SA_MCMEMBER_REC_PKEY		|
+		IB_SA_MCMEMBER_REC_JOIN_STATE;
+
+	if (create) {
+		comp_mask |=
+			IB_SA_MCMEMBER_REC_QKEY		|
+			IB_SA_MCMEMBER_REC_SL		|
+			IB_SA_MCMEMBER_REC_FLOW_LABEL	|
+			IB_SA_MCMEMBER_REC_TRAFFIC_CLASS;
+
+		rec.qkey	  = priv->broadcast->mcmember.qkey;
+		rec.sl		  = priv->broadcast->mcmember.sl;
+		rec.flow_label	  = priv->broadcast->mcmember.flow_label;
+		rec.traffic_class = priv->broadcast->mcmember.traffic_class;
+	}
+
+	ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec, comp_mask,
+				     mcast->backoff * 1000, GFP_ATOMIC,
+				     ipoib_mcast_join_complete,
+				     mcast, &mcast->query);
+
+	if (ret < 0) {
+		ipoib_warn(priv, "ib_sa_mcmember_rec_set failed, status %d\n", ret);
+
+		mcast->backoff *= 2;
+		if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS)
+			mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS;
+
+		down(&mcast_mutex);
+		if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
+			queue_delayed_work(ipoib_workqueue,
+					   &priv->mcast_task,
+					   mcast->backoff);
+		up(&mcast_mutex);
+	} else
+		mcast->query_id = ret;
+}
+
+void ipoib_mcast_join_task(void *dev_ptr)
+{
+	struct net_device *dev = dev_ptr;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	if (!test_bit(IPOIB_MCAST_RUN, &priv->flags))
+		return;
+
+	if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid))
+		ipoib_warn(priv, "ib_gid_entry_get() failed\n");
+	else
+		memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid));
+
+	{
+		struct ib_port_attr attr;
+
+		if (!ib_query_port(priv->ca, priv->port, &attr)) {
+			priv->local_lid  = attr.lid;
+			priv->local_rate = attr.active_speed *
+				ib_width_enum_to_int(attr.active_width);
+		} else
+			ipoib_warn(priv, "ib_query_port failed\n");
+	}
+
+	if (!priv->broadcast) {
+		priv->broadcast = ipoib_mcast_alloc(dev, 1);
+		if (!priv->broadcast) {
+			ipoib_warn(priv, "failed to allocate broadcast group\n");
+			down(&mcast_mutex);
+			if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
+				queue_delayed_work(ipoib_workqueue,
+						   &priv->mcast_task, HZ);
+			up(&mcast_mutex);
+			return;
+		}
+
+		memcpy(priv->broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
+		       sizeof (union ib_gid));
+
+		spin_lock_irq(&priv->lock);
+		__ipoib_mcast_add(dev, priv->broadcast);
+		spin_unlock_irq(&priv->lock);
+	}
+
+	if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) {
+		ipoib_mcast_join(dev, priv->broadcast, 0);
+		return;
+	}
+
+	while (1) {
+		struct ipoib_mcast *mcast = NULL;
+
+		spin_lock_irq(&priv->lock);
+		list_for_each_entry(mcast, &priv->multicast_list, list) {
+			if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)
+			    && !test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)
+			    && !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) {
+				/* Found the next unjoined group */
+				break;
+			}
+		}
+		spin_unlock_irq(&priv->lock);
+
+		if (&mcast->list == &priv->multicast_list) {
+			/* All done */
+			break;
+		}
+
+		ipoib_mcast_join(dev, mcast, 1);
+		return;
+	}
+
+	priv->mcast_mtu = ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu) -
+		IPOIB_ENCAP_LEN;
+	dev->mtu = min(priv->mcast_mtu, priv->admin_mtu);
+
+	ipoib_dbg_mcast(priv, "successfully joined all multicast groups\n");
+
+	clear_bit(IPOIB_MCAST_RUN, &priv->flags);
+	netif_carrier_on(dev);
+}
+
+int ipoib_mcast_start_thread(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	ipoib_dbg_mcast(priv, "starting multicast thread\n");
+
+	down(&mcast_mutex);
+	if (!test_and_set_bit(IPOIB_MCAST_RUN, &priv->flags))
+		queue_work(ipoib_workqueue, &priv->mcast_task);
+	up(&mcast_mutex);
+
+	return 0;
+}
+
+int ipoib_mcast_stop_thread(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_mcast *mcast;
+
+	ipoib_dbg_mcast(priv, "stopping multicast thread\n");
+
+	down(&mcast_mutex);
+	clear_bit(IPOIB_MCAST_RUN, &priv->flags);
+	cancel_delayed_work(&priv->mcast_task);
+	up(&mcast_mutex);
+
+	flush_workqueue(ipoib_workqueue);
+
+	if (priv->broadcast && priv->broadcast->query) {
+		ib_sa_cancel_query(priv->broadcast->query_id, priv->broadcast->query);
+		priv->broadcast->query = NULL;
+		ipoib_dbg_mcast(priv, "waiting for bcast\n");
+		wait_for_completion(&priv->broadcast->done);
+	}
+
+	list_for_each_entry(mcast, &priv->multicast_list, list) {
+		if (mcast->query) {
+			ib_sa_cancel_query(mcast->query_id, mcast->query);
+			mcast->query = NULL;
+			ipoib_dbg_mcast(priv, "waiting for MGID " IPOIB_GID_FMT "\n",
+					IPOIB_GID_ARG(mcast->mcmember.mgid));
+			wait_for_completion(&mcast->done);
+		}
+	}
+
+	return 0;
+}
+
+static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ib_sa_mcmember_rec rec = {
+		.join_state = 1
+	};
+	int ret = 0;
+
+	if (!test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags))
+		return 0;
+
+	ipoib_dbg_mcast(priv, "leaving MGID " IPOIB_GID_FMT "\n",
+			IPOIB_GID_ARG(mcast->mcmember.mgid));
+
+	rec.mgid     = mcast->mcmember.mgid;
+	rec.port_gid = priv->local_gid;
+	rec.pkey     = be16_to_cpu(priv->pkey);
+
+	/* Remove ourselves from the multicast group */
+	ret = ipoib_mcast_detach(dev, be16_to_cpu(mcast->mcmember.mlid),
+				 &mcast->mcmember.mgid);
+	if (ret)
+		ipoib_warn(priv, "ipoib_mcast_detach failed (result = %d)\n", ret);
+
+	/*
+	 * Just make one shot at leaving and don't wait for a reply;
+	 * if we fail, too bad.
+	 */
+	ret = ib_sa_mcmember_rec_delete(priv->ca, priv->port, &rec,
+					IB_SA_MCMEMBER_REC_MGID		|
+					IB_SA_MCMEMBER_REC_PORT_GID	|
+					IB_SA_MCMEMBER_REC_PKEY		|
+					IB_SA_MCMEMBER_REC_JOIN_STATE,
+					0, GFP_ATOMIC, NULL,
+					mcast, &mcast->query);
+	if (ret < 0)
+		ipoib_warn(priv, "ib_sa_mcmember_rec_delete failed "
+			   "for leave (result = %d)\n", ret);
+
+	return 0;
+}
+
+void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
+		      struct sk_buff *skb)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ipoib_mcast *mcast;
+
+	/*
+	 * We can only be called from ipoib_start_xmit, so we're
+	 * inside tx_lock -- no need to save/restore flags.
+	 */
+	spin_lock(&priv->lock);
+
+	mcast = __ipoib_mcast_find(dev, mgid);
+	if (!mcast) {
+		/* Let's create a new send only group now */
+		ipoib_dbg_mcast(priv, "setting up send only multicast group for "
+				IPOIB_GID_FMT "\n", IPOIB_GID_ARG(*mgid));
+
+		mcast = ipoib_mcast_alloc(dev, 0);
+		if (!mcast) {
+			ipoib_warn(priv, "unable to allocate memory for "
+				   "multicast structure\n");
+			dev_kfree_skb_any(skb);
+			goto out;
+		}
+
+		set_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags);
+		mcast->mcmember.mgid = *mgid;
+		__ipoib_mcast_add(dev, mcast);
+		list_add_tail(&mcast->list, &priv->multicast_list);
+	}
+
+	if (!mcast->ah) {
+		if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE)
+			skb_queue_tail(&mcast->pkt_queue, skb);
+		else
+			dev_kfree_skb_any(skb);
+
+		if (mcast->query)
+			ipoib_dbg_mcast(priv, "no address vector, "
+					"but multicast join already started\n");
+		else if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags))
+			ipoib_mcast_sendonly_join(mcast);
+
+		/*
+		 * If lookup completes between here and out:, don't
+		 * want to send packet twice.
+		 */
+		mcast = NULL;
+	}
+
+out:
+	if (mcast && mcast->ah) {
+		if (skb->dst            &&
+		    skb->dst->neighbour &&
+		    !*to_ipoib_neigh(skb->dst->neighbour)) {
+			struct ipoib_neigh *neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
+
+			if (neigh) {
+				kref_get(&mcast->ah->ref);
+				neigh->ah  	= mcast->ah;
+				neigh->neighbour = skb->dst->neighbour;
+				*to_ipoib_neigh(skb->dst->neighbour) = neigh;
+				list_add_tail(&neigh->list, &mcast->neigh_list);
+			}
+		}
+
+		ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN);
+	}
+
+	spin_unlock(&priv->lock);
+}
+
+void ipoib_mcast_dev_flush(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	LIST_HEAD(remove_list);
+	struct ipoib_mcast *mcast, *tmcast, *nmcast;
+	unsigned long flags;
+
+	ipoib_dbg_mcast(priv, "flushing multicast list\n");
+
+	spin_lock_irqsave(&priv->lock, flags);
+	list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) {
+		nmcast = ipoib_mcast_alloc(dev, 0);
+		if (nmcast) {
+			nmcast->flags =
+				mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY);
+
+			nmcast->mcmember.mgid = mcast->mcmember.mgid;
+
+			/* Add the new group in before the to-be-destroyed group */
+			list_add_tail(&nmcast->list, &mcast->list);
+			list_del_init(&mcast->list);
+
+			rb_replace_node(&mcast->rb_node, &nmcast->rb_node,
+					&priv->multicast_tree);
+
+			list_add_tail(&mcast->list, &remove_list);
+		} else {
+			ipoib_warn(priv, "could not reallocate multicast group "
+				   IPOIB_GID_FMT "\n",
+				   IPOIB_GID_ARG(mcast->mcmember.mgid));
+		}
+	}
+
+	if (priv->broadcast) {
+		nmcast = ipoib_mcast_alloc(dev, 0);
+		if (nmcast) {
+			nmcast->mcmember.mgid = priv->broadcast->mcmember.mgid;
+
+			rb_replace_node(&priv->broadcast->rb_node,
+					&nmcast->rb_node,
+					&priv->multicast_tree);
+
+			list_add_tail(&priv->broadcast->list, &remove_list);
+		}
+
+		priv->broadcast = nmcast;
+	}
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {
+		ipoib_mcast_leave(dev, mcast);
+		ipoib_mcast_free(mcast);
+	}
+}
+
+void ipoib_mcast_dev_down(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	unsigned long flags;
+
+	/* Delete broadcast since it will be recreated */
+	if (priv->broadcast) {
+		ipoib_dbg_mcast(priv, "deleting broadcast group\n");
+
+		spin_lock_irqsave(&priv->lock, flags);
+		rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree);
+		spin_unlock_irqrestore(&priv->lock, flags);
+		ipoib_mcast_leave(dev, priv->broadcast);
+		ipoib_mcast_free(priv->broadcast);
+		priv->broadcast = NULL;
+	}
+}
+
+void ipoib_mcast_restart_task(void *dev_ptr)
+{
+	struct net_device *dev = dev_ptr;
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct dev_mc_list *mclist;
+	struct ipoib_mcast *mcast, *tmcast;
+	LIST_HEAD(remove_list);
+	unsigned long flags;
+
+	ipoib_dbg_mcast(priv, "restarting multicast task\n");
+
+	ipoib_mcast_stop_thread(dev);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	/*
+	 * Unfortunately, the networking core only gives us a list of all of
+	 * the multicast hardware addresses. We need to figure out which ones
+	 * are new and which ones have been removed
+	 */
+
+	/* Clear out the found flag */
+	list_for_each_entry(mcast, &priv->multicast_list, list)
+		clear_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags);
+
+	/* Mark all of the entries that are found or don't exist */
+	for (mclist = dev->mc_list; mclist; mclist = mclist->next) {
+		union ib_gid mgid;
+
+		memcpy(mgid.raw, mclist->dmi_addr + 4, sizeof mgid);
+
+		/* Add in the P_Key */
+		mgid.raw[4] = (priv->pkey >> 8) & 0xff;
+		mgid.raw[5] = priv->pkey & 0xff;
+
+		mcast = __ipoib_mcast_find(dev, &mgid);
+		if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
+			struct ipoib_mcast *nmcast;
+
+			/* Not found or send-only group, let's add a new entry */
+			ipoib_dbg_mcast(priv, "adding multicast entry for mgid "
+					IPOIB_GID_FMT "\n", IPOIB_GID_ARG(mgid));
+
+			nmcast = ipoib_mcast_alloc(dev, 0);
+			if (!nmcast) {
+				ipoib_warn(priv, "unable to allocate memory for multicast structure\n");
+				continue;
+			}
+
+			set_bit(IPOIB_MCAST_FLAG_FOUND, &nmcast->flags);
+
+			nmcast->mcmember.mgid = mgid;
+
+			if (mcast) {
+				/* Destroy the send only entry */
+				list_del(&mcast->list);
+				list_add_tail(&mcast->list, &remove_list);
+
+				rb_replace_node(&mcast->rb_node,
+						&nmcast->rb_node,
+						&priv->multicast_tree);
+			} else
+				__ipoib_mcast_add(dev, nmcast);
+
+			list_add_tail(&nmcast->list, &priv->multicast_list);
+		}
+
+		if (mcast)
+			set_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags);
+	}
+
+	/* Remove all of the entries don't exist anymore */
+	list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) {
+		if (!test_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags) &&
+		    !test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
+			ipoib_dbg_mcast(priv, "deleting multicast group " IPOIB_GID_FMT "\n",
+					IPOIB_GID_ARG(mcast->mcmember.mgid));
+
+			rb_erase(&mcast->rb_node, &priv->multicast_tree);
+
+			/* Move to the remove list */
+			list_del(&mcast->list);
+			list_add_tail(&mcast->list, &remove_list);
+		}
+	}
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	/* We have to cancel outside of the spinlock */
+	list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {
+		ipoib_mcast_leave(mcast->dev, mcast);
+		ipoib_mcast_free(mcast);
+	}
+
+	if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
+		ipoib_mcast_start_thread(dev);
+}
+
+struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev)
+{
+	struct ipoib_mcast_iter *iter;
+
+	iter = kmalloc(sizeof *iter, GFP_KERNEL);
+	if (!iter)
+		return NULL;
+
+	iter->dev = dev;
+	memset(iter->mgid.raw, 0, sizeof iter->mgid);
+
+	if (ipoib_mcast_iter_next(iter)) {
+		ipoib_mcast_iter_free(iter);
+		return NULL;
+	}
+
+	return iter;
+}
+
+void ipoib_mcast_iter_free(struct ipoib_mcast_iter *iter)
+{
+	kfree(iter);
+}
+
+int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(iter->dev);
+	struct rb_node *n;
+	struct ipoib_mcast *mcast;
+	int ret = 1;
+
+	spin_lock_irq(&priv->lock);
+
+	n = rb_first(&priv->multicast_tree);
+
+	while (n) {
+		mcast = rb_entry(n, struct ipoib_mcast, rb_node);
+
+		if (memcmp(iter->mgid.raw, mcast->mcmember.mgid.raw,
+			   sizeof (union ib_gid)) < 0) {
+			iter->mgid      = mcast->mcmember.mgid;
+			iter->created   = mcast->created;
+			iter->queuelen  = skb_queue_len(&mcast->pkt_queue);
+			iter->complete  = !!mcast->ah;
+			iter->send_only = !!(mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY));
+
+			ret = 0;
+
+			break;
+		}
+
+		n = rb_next(n);
+	}
+
+	spin_unlock_irq(&priv->lock);
+
+	return ret;
+}
+
+void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
+			   union ib_gid *mgid,
+			   unsigned long *created,
+			   unsigned int *queuelen,
+			   unsigned int *complete,
+			   unsigned int *send_only)
+{
+	*mgid      = iter->mgid;
+	*created   = iter->created;
+	*queuelen  = iter->queuelen;
+	*complete  = iter->complete;
+	*send_only = iter->send_only;
+}
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
new file mode 100644
index 000000000000..4933edf062c2
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
@@ -0,0 +1,260 @@
+/*
+ * Copyright (c) 2004, 2005 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.
+ *
+ * $Id: ipoib_verbs.c 1349 2004-12-16 21:09:43Z roland $
+ */
+
+#include <ib_cache.h>
+
+#include "ipoib.h"
+
+int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ib_qp_attr *qp_attr;
+	int attr_mask;
+	int ret;
+	u16 pkey_index;
+
+	ret = -ENOMEM;
+	qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL);
+	if (!qp_attr)
+		goto out;
+
+	if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) {
+		clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+		ret = -ENXIO;
+		goto out;
+	}
+	set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+
+	/* set correct QKey for QP */
+	qp_attr->qkey = priv->qkey;
+	attr_mask = IB_QP_QKEY;
+	ret = ib_modify_qp(priv->qp, qp_attr, attr_mask);
+	if (ret) {
+		ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret);
+		goto out;
+	}
+
+	/* attach QP to multicast group */
+	down(&priv->mcast_mutex);
+	ret = ib_attach_mcast(priv->qp, mgid, mlid);
+	up(&priv->mcast_mutex);
+	if (ret)
+		ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret);
+
+out:
+	kfree(qp_attr);
+	return ret;
+}
+
+int ipoib_mcast_detach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	int ret;
+
+	down(&priv->mcast_mutex);
+	ret = ib_detach_mcast(priv->qp, mgid, mlid);
+	up(&priv->mcast_mutex);
+	if (ret)
+		ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret);
+
+	return ret;
+}
+
+int ipoib_qp_create(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	int ret;
+	u16 pkey_index;
+	struct ib_qp_attr qp_attr;
+	int attr_mask;
+
+	/*
+	 * Search through the port P_Key table for the requested pkey value.
+	 * The port has to be assigned to the respective IB partition in
+	 * advance.
+	 */
+	ret = ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index);
+	if (ret) {
+		clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+		return ret;
+	}
+	set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+
+	qp_attr.qp_state = IB_QPS_INIT;
+	qp_attr.qkey = 0;
+	qp_attr.port_num = priv->port;
+	qp_attr.pkey_index = pkey_index;
+	attr_mask =
+	    IB_QP_QKEY |
+	    IB_QP_PORT |
+	    IB_QP_PKEY_INDEX |
+	    IB_QP_STATE;
+	ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
+	if (ret) {
+		ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret);
+		goto out_fail;
+	}
+
+	qp_attr.qp_state = IB_QPS_RTR;
+	/* Can't set this in a INIT->RTR transition */
+	attr_mask &= ~IB_QP_PORT;
+	ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
+	if (ret) {
+		ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret);
+		goto out_fail;
+	}
+
+	qp_attr.qp_state = IB_QPS_RTS;
+	qp_attr.sq_psn = 0;
+	attr_mask |= IB_QP_SQ_PSN;
+	attr_mask &= ~IB_QP_PKEY_INDEX;
+	ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
+	if (ret) {
+		ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret);
+		goto out_fail;
+	}
+
+	return 0;
+
+out_fail:
+	ib_destroy_qp(priv->qp);
+	priv->qp = NULL;
+
+	return -EINVAL;
+}
+
+int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+	struct ib_qp_init_attr init_attr = {
+		.cap = {
+			.max_send_wr  = IPOIB_TX_RING_SIZE,
+			.max_recv_wr  = IPOIB_RX_RING_SIZE,
+			.max_send_sge = 1,
+			.max_recv_sge = 1
+		},
+		.sq_sig_type = IB_SIGNAL_ALL_WR,
+		.qp_type     = IB_QPT_UD
+	};
+
+	priv->pd = ib_alloc_pd(priv->ca);
+	if (IS_ERR(priv->pd)) {
+		printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name);
+		return -ENODEV;
+	}
+
+	priv->cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev,
+				IPOIB_TX_RING_SIZE + IPOIB_RX_RING_SIZE + 1);
+	if (IS_ERR(priv->cq)) {
+		printk(KERN_WARNING "%s: failed to create CQ\n", ca->name);
+		goto out_free_pd;
+	}
+
+	if (ib_req_notify_cq(priv->cq, IB_CQ_NEXT_COMP))
+		goto out_free_cq;
+
+	priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE);
+	if (IS_ERR(priv->mr)) {
+		printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name);
+		goto out_free_cq;
+	}
+
+	init_attr.send_cq = priv->cq;
+	init_attr.recv_cq = priv->cq,
+
+	priv->qp = ib_create_qp(priv->pd, &init_attr);
+	if (IS_ERR(priv->qp)) {
+		printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
+		goto out_free_mr;
+	}
+
+	priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff;
+	priv->dev->dev_addr[2] = (priv->qp->qp_num >>  8) & 0xff;
+	priv->dev->dev_addr[3] = (priv->qp->qp_num      ) & 0xff;
+
+	priv->tx_sge.lkey 	= priv->mr->lkey;
+
+	priv->tx_wr.opcode 	= IB_WR_SEND;
+	priv->tx_wr.sg_list 	= &priv->tx_sge;
+	priv->tx_wr.num_sge 	= 1;
+	priv->tx_wr.send_flags 	= IB_SEND_SIGNALED;
+
+	return 0;
+
+out_free_mr:
+	ib_dereg_mr(priv->mr);
+
+out_free_cq:
+	ib_destroy_cq(priv->cq);
+
+out_free_pd:
+	ib_dealloc_pd(priv->pd);
+	return -ENODEV;
+}
+
+void ipoib_transport_dev_cleanup(struct net_device *dev)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	if (priv->qp) {
+		if (ib_destroy_qp(priv->qp))
+			ipoib_warn(priv, "ib_qp_destroy failed\n");
+
+		priv->qp = NULL;
+		clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
+	}
+
+	if (ib_dereg_mr(priv->mr))
+		ipoib_warn(priv, "ib_dereg_mr failed\n");
+
+	if (ib_destroy_cq(priv->cq))
+		ipoib_warn(priv, "ib_cq_destroy failed\n");
+
+	if (ib_dealloc_pd(priv->pd))
+		ipoib_warn(priv, "ib_dealloc_pd failed\n");
+}
+
+void ipoib_event(struct ib_event_handler *handler,
+		 struct ib_event *record)
+{
+	struct ipoib_dev_priv *priv =
+		container_of(handler, struct ipoib_dev_priv, event_handler);
+
+	if (record->event == IB_EVENT_PORT_ACTIVE ||
+	    record->event == IB_EVENT_LID_CHANGE  ||
+	    record->event == IB_EVENT_SM_CHANGE) {
+		ipoib_dbg(priv, "Port active event\n");
+		schedule_work(&priv->flush_task);
+	}
+}
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
new file mode 100644
index 000000000000..94b8ea812fef
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
@@ -0,0 +1,177 @@
+/*
+ * 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.
+ *
+ * $Id: ipoib_vlan.c 1349 2004-12-16 21:09:43Z roland $
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+
+#include <asm/uaccess.h>
+
+#include "ipoib.h"
+
+static ssize_t show_parent(struct class_device *class_dev, char *buf)
+{
+	struct net_device *dev =
+		container_of(class_dev, struct net_device, class_dev);
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	return sprintf(buf, "%s\n", priv->parent->name);
+}
+static CLASS_DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL);
+
+int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
+{
+	struct ipoib_dev_priv *ppriv, *priv;
+	char intf_name[IFNAMSIZ];
+	int result;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	ppriv = netdev_priv(pdev);
+
+	down(&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;
+		goto err;
+	}
+
+	list_for_each_entry(priv, &ppriv->child_intfs, list) {
+		if (priv->pkey == pkey) {
+			result = -ENOTUNIQ;
+			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;
+	}
+
+	set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
+
+	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 device_init_failed;
+	}
+
+	result = register_netdev(priv->dev);
+	if (result) {
+		ipoib_warn(priv, "failed to initialize; error %i", result);
+		goto register_failed;
+	}
+
+	priv->parent = ppriv->dev;
+
+	if (ipoib_create_debug_file(priv->dev))
+		goto debug_failed;
+
+	if (ipoib_add_pkey_attr(priv->dev))
+		goto sysfs_failed;
+
+	if (class_device_create_file(&priv->dev->class_dev,
+				     &class_device_attr_parent))
+		goto sysfs_failed;
+
+	list_add_tail(&priv->list, &ppriv->child_intfs);
+
+	up(&ppriv->vlan_mutex);
+
+	return 0;
+
+sysfs_failed:
+	ipoib_delete_debug_file(priv->dev);
+
+debug_failed:
+	unregister_netdev(priv->dev);
+
+register_failed:
+	ipoib_dev_cleanup(priv->dev);
+
+device_init_failed:
+	free_netdev(priv->dev);
+
+err:
+	up(&ppriv->vlan_mutex);
+	return result;
+}
+
+int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
+{
+	struct ipoib_dev_priv *ppriv, *priv, *tpriv;
+	int ret = -ENOENT;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	ppriv = netdev_priv(pdev);
+
+	down(&ppriv->vlan_mutex);
+	list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
+		if (priv->pkey == pkey) {
+			unregister_netdev(priv->dev);
+			ipoib_dev_cleanup(priv->dev);
+
+			list_del(&priv->list);
+
+			kfree(priv);
+
+			ret = 0;
+			break;
+		}
+	}
+	up(&ppriv->vlan_mutex);
+
+	return ret;
+}