[ofa-general] [PATCH 08/13] QLogic VNIC: sysfs interface implementation for the driver

[Ramachandra K <ramachandra.kuchimanchi@qlogic.com>]

From: Amar Mudrankit <amar.mudrankit@qlogic.com>

The sysfs interface for the QLogic VNIC driver is implemented through
this patch.

Signed-off-by: Ramachandra K <ramachandra.kuchimanchi@qlogic.com>
Signed-off-by: Poornima Kamath <poornima.kamath@qlogic.com>
---

 drivers/infiniband/ulp/qlgc_vnic/vnic_sys.c | 1127 +++++++++++++++++++++++++++
 drivers/infiniband/ulp/qlgc_vnic/vnic_sys.h |   62 +
 2 files changed, 1189 insertions(+), 0 deletions(-)
 create mode 100644 drivers/infiniband/ulp/qlgc_vnic/vnic_sys.c
 create mode 100644 drivers/infiniband/ulp/qlgc_vnic/vnic_sys.h

diff --git a/drivers/infiniband/ulp/qlgc_vnic/vnic_sys.c b/drivers/infiniband/ulp/qlgc_vnic/vnic_sys.c
new file mode 100644
index 0000000..7e70b0c
--- /dev/null
+++ b/drivers/infiniband/ulp/qlgc_vnic/vnic_sys.c
@@ -0,0 +1,1127 @@
+/*
+ * Copyright (c) 2006 QLogic, Inc.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/parser.h>
+#include <linux/netdevice.h>
+#include <linux/if.h>
+
+#include "vnic_util.h"
+#include "vnic_config.h"
+#include "vnic_ib.h"
+#include "vnic_viport.h"
+#include "vnic_main.h"
+#include "vnic_stats.h"
+
+/*
+ * target eiocs are added by writing
+ *
+ * ioc_guid=<EIOC GUID>,dgid=<dest GID>,pkey=<P_key>,name=<interface_name>
+ * to the create_primary  sysfs attribute.
+ */
+enum {
+	VNIC_OPT_ERR = 0,
+	VNIC_OPT_IOC_GUID = 1 << 0,
+	VNIC_OPT_DGID = 1 << 1,
+	VNIC_OPT_PKEY = 1 << 2,
+	VNIC_OPT_NAME = 1 << 3,
+	VNIC_OPT_INSTANCE = 1 << 4,
+	VNIC_OPT_RXCSUM = 1 << 5,
+	VNIC_OPT_TXCSUM = 1 << 6,
+	VNIC_OPT_HEARTBEAT = 1 << 7,
+	VNIC_OPT_IOC_STRING = 1 << 8,
+	VNIC_OPT_IB_MULTICAST = 1 << 9,
+	VNIC_OPT_ALL = (VNIC_OPT_IOC_GUID |
+			VNIC_OPT_DGID | VNIC_OPT_NAME | VNIC_OPT_PKEY),
+};
+
+static match_table_t vnic_opt_tokens = {
+	{VNIC_OPT_IOC_GUID, "ioc_guid=%s"},
+	{VNIC_OPT_DGID, "dgid=%s"},
+	{VNIC_OPT_PKEY, "pkey=%x"},
+	{VNIC_OPT_NAME, "name=%s"},
+	{VNIC_OPT_INSTANCE, "instance=%d"},
+	{VNIC_OPT_RXCSUM, "rx_csum=%s"},
+	{VNIC_OPT_TXCSUM, "tx_csum=%s"},
+	{VNIC_OPT_HEARTBEAT, "heartbeat=%d"},
+	{VNIC_OPT_IOC_STRING, "ioc_string=\"%s"},
+	{VNIC_OPT_IB_MULTICAST, "ib_multicast=%s"},
+	{VNIC_OPT_ERR, NULL}
+};
+
+void vnic_release_dev(struct device *dev)
+{
+	struct dev_info *dev_info =
+	    container_of(dev, struct dev_info, dev);
+
+	complete(&dev_info->released);
+
+}
+
+struct class vnic_class = {
+	.name = "infiniband_qlgc_vnic",
+	.dev_release = vnic_release_dev
+};
+
+struct dev_info interface_dev;
+
+DEVICE_ATTR(create_primary, S_IWUSR, NULL, vnic_create_primary);
+DEVICE_ATTR(create_secondary, S_IWUSR, NULL, vnic_create_secondary);
+DEVICE_ATTR(delete_vnic, S_IWUSR, NULL, vnic_delete);
+
+static int vnic_parse_options(const char *buf, struct path_param *param)
+{
+	char *options, *sep_opt;
+	char *p;
+	char dgid[3];
+	substring_t args[MAX_OPT_ARGS];
+	int opt_mask = 0;
+	int token;
+	int ret = -EINVAL;
+	int i, len;
+
+	options = kstrdup(buf, GFP_KERNEL);
+	if (!options)
+		return -ENOMEM;
+
+	sep_opt = options;
+	while ((p = strsep(&sep_opt, ",")) != NULL) {
+		if (!*p)
+			continue;
+
+		token = match_token(p, vnic_opt_tokens, args);
+		opt_mask |= token;
+
+		switch (token) {
+		case VNIC_OPT_IOC_GUID:
+			p = match_strdup(args);
+			param->ioc_guid = cpu_to_be64(simple_strtoull(p, NULL,
+								      16));
+			kfree(p);
+			break;
+
+		case VNIC_OPT_DGID:
+			p = match_strdup(args);
+			if (strlen(p) != 32) {
+				printk(KERN_WARNING PFX
+				       "bad dest GID parameter '%s'\n", p);
+				kfree(p);
+				goto out;
+			}
+
+			for (i = 0; i < 16; ++i) {
+				strlcpy(dgid, p + i * 2, 3);
+				param->dgid[i] = simple_strtoul(dgid, NULL,
+								16);
+
+			}
+			kfree(p);
+			break;
+
+		case VNIC_OPT_PKEY:
+			if (match_hex(args, &token)) {
+				printk(KERN_WARNING PFX
+				       "bad P_key parameter '%s'\n", p);
+				goto out;
+			}
+			param->pkey = cpu_to_be16(token);
+			break;
+
+		case VNIC_OPT_NAME:
+			p = match_strdup(args);
+			if (strlen(p) >= IFNAMSIZ) {
+				printk(KERN_WARNING PFX
+				       "interface name parameter too long\n");
+				kfree(p);
+				goto out;
+			}
+			strcpy(param->name, p);
+			kfree(p);
+			break;
+		case VNIC_OPT_INSTANCE:
+			if (match_int(args, &token)) {
+				printk(KERN_WARNING PFX
+				       "bad instance parameter '%s'\n", p);
+				goto out;
+			}
+
+			if (token > 255 || token < 0) {
+				printk(KERN_WARNING PFX
+				       "instance parameter must be"
+				       " >= 0 and <= 255\n");
+				goto out;
+			}
+
+			param->instance = token;
+			break;
+		case VNIC_OPT_RXCSUM:
+			p = match_strdup(args);
+			if (!strncmp(p, "true", 4))
+				param->rx_csum = 1;
+			else if (!strncmp(p, "false", 5))
+				param->rx_csum = 0;
+			else {
+				printk(KERN_WARNING PFX
+				       "bad rx_csum parameter."
+				       " must be 'true' or 'false'\n");
+				kfree(p);
+				goto out;
+			}
+			kfree(p);
+			break;
+		case VNIC_OPT_TXCSUM:
+			p = match_strdup(args);
+			if (!strncmp(p, "true", 4))
+				param->tx_csum = 1;
+			else if (!strncmp(p, "false", 5))
+				param->tx_csum = 0;
+			else {
+				printk(KERN_WARNING PFX
+				       "bad tx_csum parameter."
+				       " must be 'true' or 'false'\n");
+				kfree(p);
+				goto out;
+			}
+			kfree(p);
+			break;
+		case VNIC_OPT_HEARTBEAT:
+			if (match_int(args, &token)) {
+				printk(KERN_WARNING PFX
+				       "bad instance parameter '%s'\n", p);
+				goto out;
+			}
+
+			if (token > 6000 || token <= 0) {
+				printk(KERN_WARNING PFX
+				       "heartbeat parameter must be"
+				       " > 0 and <= 6000\n");
+				goto out;
+			}
+			param->heartbeat = token;
+			break;
+		case VNIC_OPT_IOC_STRING:
+			p = match_strdup(args);
+			len = strlen(p);
+			if (len > MAX_IOC_STRING_LEN) {
+				printk(KERN_WARNING PFX
+				       "ioc string parameter too long\n");
+				kfree(p);
+				goto out;
+			}
+			strcpy(param->ioc_string, p);
+			if (*(p + len - 1) != '\"') {
+				strcat(param->ioc_string, ",");
+				kfree(p);
+				p = strsep(&sep_opt, "\"");
+				strcat(param->ioc_string, p);
+				sep_opt++;
+			} else {
+				*(param->ioc_string + len - 1) = '\0';
+				kfree(p);
+			}
+			break;
+		case VNIC_OPT_IB_MULTICAST:
+			p = match_strdup(args);
+			if (!strncmp(p, "true", 4))
+				param->ib_multicast = 1;
+			else if (!strncmp(p, "false", 5))
+				param->ib_multicast = 0;
+			else {
+					printk(KERN_WARNING PFX
+					"bad ib_multicast parameter."
+					" must be 'true' or 'false'\n");
+				kfree(p);
+				goto out;
+			}
+			kfree(p);
+			break;
+		default:
+			printk(KERN_WARNING PFX
+			       "unknown parameter or missing value "
+			       "'%s' in target creation request\n", p);
+			goto out;
+		}
+
+	}
+
+	if ((opt_mask & VNIC_OPT_ALL) == VNIC_OPT_ALL)
+		ret = 0;
+	else
+		for (i = 0; i < ARRAY_SIZE(vnic_opt_tokens); ++i)
+			if ((vnic_opt_tokens[i].token & VNIC_OPT_ALL) &&
+			    !(vnic_opt_tokens[i].token & opt_mask))
+				printk(KERN_WARNING PFX
+				       "target creation request is "
+				       "missing parameter '%s'\n",
+				       vnic_opt_tokens[i].pattern);
+
+out:
+	kfree(options);
+	return ret;
+
+}
+
+static ssize_t show_vnic_state(struct device *dev,
+			       struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+	struct vnic *vnic = container_of(info, struct vnic, dev_info);
+	switch (vnic->state) {
+	case VNIC_UNINITIALIZED:
+		return sprintf(buf, "VNIC_UNINITIALIZED\n");
+	case VNIC_REGISTERED:
+		return sprintf(buf, "VNIC_REGISTERED\n");
+	default:
+		return sprintf(buf, "INVALID STATE\n");
+	}
+
+}
+
+static DEVICE_ATTR(vnic_state, S_IRUGO, show_vnic_state, NULL);
+
+static ssize_t show_rx_csum(struct device *dev,
+			    struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+	struct vnic *vnic = container_of(info, struct vnic, dev_info);
+
+	if (vnic->config->use_rx_csum)
+		return sprintf(buf, "true\n");
+	else
+		return sprintf(buf, "false\n");
+}
+
+static DEVICE_ATTR(rx_csum, S_IRUGO, show_rx_csum, NULL);
+
+static ssize_t show_tx_csum(struct device *dev,
+			    struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+	struct vnic *vnic = container_of(info, struct vnic, dev_info);
+
+	if (vnic->config->use_tx_csum)
+		return sprintf(buf, "true\n");
+	else
+		return sprintf(buf, "false\n");
+}
+
+static DEVICE_ATTR(tx_csum, S_IRUGO, show_tx_csum, NULL);
+
+static ssize_t show_current_path(struct device *dev,
+				 struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+	struct vnic *vnic = container_of(info, struct vnic, dev_info);
+
+	if (vnic->current_path == &vnic->primary_path)
+		return sprintf(buf, "primary path\n");
+	else if (vnic->current_path == &vnic->secondary_path)
+		return sprintf(buf, "secondary path\n");
+	else
+		return sprintf(buf, "none\n");
+
+}
+
+static DEVICE_ATTR(current_path, S_IRUGO, show_current_path, NULL);
+
+static struct attribute *vnic_dev_attrs[] = {
+	&dev_attr_vnic_state.attr,
+	&dev_attr_rx_csum.attr,
+	&dev_attr_tx_csum.attr,
+	&dev_attr_current_path.attr,
+	NULL
+};
+
+struct attribute_group vnic_dev_attr_group = {
+	.attrs = vnic_dev_attrs,
+};
+
+static inline void print_dgid(u8 *dgid)
+{
+	int i;
+
+	for (i = 0; i < 16; i += 2)
+		printk("%04x", be16_to_cpu(*(__be16 *)&dgid[i]));
+}
+
+static inline int is_dgid_zero(u8 *dgid)
+{
+	int i;
+
+	for (i = 0; i < 16; i++) {
+		if (dgid[i] != 0)
+			return 1;
+	}
+	return 0;
+}
+
+static int create_netpath(struct netpath *npdest,
+			  struct path_param *p_params)
+{
+	struct viport_config	*viport_config;
+	struct viport		*viport;
+	struct vnic		*vnic;
+	struct list_head	*ptr;
+	int			ret = 0;
+
+	list_for_each(ptr, &vnic_list) {
+		vnic = list_entry(ptr, struct vnic, list_ptrs);
+		if (vnic->primary_path.viport) {
+			viport_config = vnic->primary_path.viport->config;
+			if ((viport_config->ioc_guid == p_params->ioc_guid)
+			    && (viport_config->control_config.vnic_instance
+				== p_params->instance)
+			    && (be64_to_cpu(p_params->ioc_guid))) {
+				SYS_ERROR("GUID %llx,"
+					  " INSTANCE %d already in use\n",
+					  be64_to_cpu(p_params->ioc_guid),
+					  p_params->instance);
+				ret = -EINVAL;
+				goto out;
+			}
+		}
+
+		if (vnic->secondary_path.viport) {
+			viport_config = vnic->secondary_path.viport->config;
+			if ((viport_config->ioc_guid == p_params->ioc_guid)
+			    && (viport_config->control_config.vnic_instance
+				== p_params->instance)
+			    && (be64_to_cpu(p_params->ioc_guid))) {
+				SYS_ERROR("GUID %llx,"
+					  " INSTANCE %d already in use\n",
+					  be64_to_cpu(p_params->ioc_guid),
+					  p_params->instance);
+				ret = -EINVAL;
+				goto out;
+			}
+		}
+	}
+
+	if (npdest->viport) {
+		SYS_ERROR("create_netpath: path already exists\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	viport_config = config_alloc_viport(p_params);
+	if (!viport_config) {
+		SYS_ERROR("create_netpath: failed creating viport config\n");
+		ret = -1;
+		goto out;
+	}
+
+	/*User specified heartbeat value is in 1/100s of a sec*/
+	if (p_params->heartbeat != -1) {
+		viport_config->hb_interval =
+			msecs_to_jiffies(p_params->heartbeat * 10);
+		viport_config->hb_timeout =
+			(p_params->heartbeat << 6) * 10000; /* usec */
+	}
+
+	viport_config->path_idx = 0;
+
+	viport = viport_allocate(viport_config);
+	if (!viport) {
+		SYS_ERROR("create_netpath: failed creating viport\n");
+		kfree(viport_config);
+		ret = -1;
+		goto out;
+	}
+
+	npdest->viport = viport;
+	viport->parent = npdest;
+	viport->vnic = npdest->parent;
+
+	if (is_dgid_zero(p_params->dgid) &&  p_params->ioc_guid != 0
+	   &&  p_params->pkey != 0) {
+		viport_kick(viport);
+		vnic_disconnected(npdest->parent, npdest);
+	} else {
+		printk(KERN_WARNING "Specified parameters IOCGUID=%llx, "
+			"P_Key=%x, DGID=", be64_to_cpu(p_params->ioc_guid),
+			p_params->pkey);
+		print_dgid(p_params->dgid);
+		printk(" insufficient for establishing %s path for interface "
+			"%s. Hence, path will not be established.\n",
+			(npdest->second_bias ? "secondary" : "primary"),
+			p_params->name);
+	}
+out:
+	return ret;
+}
+
+static struct vnic *create_vnic(struct path_param *param)
+{
+	struct vnic_config *vnic_config;
+	struct vnic *vnic;
+	struct list_head *ptr;
+
+	SYS_INFO("create_vnic: name = %s\n", param->name);
+	list_for_each(ptr, &vnic_list) {
+		vnic = list_entry(ptr, struct vnic, list_ptrs);
+		if (!strcmp(vnic->config->name, param->name)) {
+			SYS_ERROR("vnic %s already exists\n",
+				   param->name);
+			return NULL;
+		}
+	}
+
+	vnic_config = config_alloc_vnic();
+	if (!vnic_config) {
+		SYS_ERROR("create_vnic: failed creating vnic config\n");
+		return NULL;
+	}
+
+	if (param->rx_csum != -1)
+		vnic_config->use_rx_csum = param->rx_csum;
+
+	if (param->tx_csum != -1)
+		vnic_config->use_tx_csum = param->tx_csum;
+
+	strcpy(vnic_config->name, param->name);
+	vnic = vnic_allocate(vnic_config);
+	if (!vnic) {
+		SYS_ERROR("create_vnic: failed allocating vnic\n");
+		goto free_vnic_config;
+	}
+
+	init_completion(&vnic->dev_info.released);
+
+	vnic->dev_info.dev.class = NULL;
+	vnic->dev_info.dev.parent = &interface_dev.dev;
+	vnic->dev_info.dev.release = vnic_release_dev;
+	snprintf(vnic->dev_info.dev.bus_id, BUS_ID_SIZE,
+		 vnic_config->name);
+
+	if (device_register(&vnic->dev_info.dev)) {
+		SYS_ERROR("create_vnic: error in registering"
+			  " vnic class dev\n");
+		goto free_vnic;
+	}
+
+	if (sysfs_create_group(&vnic->dev_info.dev.kobj,
+			       &vnic_dev_attr_group)) {
+		SYS_ERROR("create_vnic: error in creating"
+			  "vnic attr group\n");
+		goto err_attr;
+
+	}
+
+	if (vnic_setup_stats_files(vnic))
+		goto err_stats;
+
+	return vnic;
+err_stats:
+	sysfs_remove_group(&vnic->dev_info.dev.kobj,
+			   &vnic_dev_attr_group);
+err_attr:
+	device_unregister(&vnic->dev_info.dev);
+	wait_for_completion(&vnic->dev_info.released);
+free_vnic:
+	list_del(&vnic->list_ptrs);
+	kfree(vnic);
+free_vnic_config:
+	kfree(vnic_config);
+	return NULL;
+}
+
+ssize_t vnic_delete(struct device *dev, struct device_attribute *dev_attr,
+		    const char *buf, size_t count)
+{
+	struct vnic *vnic;
+	struct list_head *ptr;
+	int ret = -EINVAL;
+
+	if (count > IFNAMSIZ) {
+		printk(KERN_WARNING PFX "invalid vnic interface name\n");
+		return ret;
+	}
+
+	SYS_INFO("vnic_delete: name = %s\n", buf);
+	list_for_each(ptr, &vnic_list) {
+		vnic = list_entry(ptr, struct vnic, list_ptrs);
+		if (!strcmp(vnic->config->name, buf)) {
+			vnic_free(vnic);
+			return count;
+		}
+	}
+
+	printk(KERN_WARNING PFX "vnic interface '%s' does not exist\n", buf);
+	return ret;
+}
+
+static ssize_t show_viport_state(struct device *dev,
+				 struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+	switch (path->viport->state) {
+	case VIPORT_DISCONNECTED:
+		return sprintf(buf, "VIPORT_DISCONNECTED\n");
+	case VIPORT_CONNECTED:
+		return sprintf(buf, "VIPORT_CONNECTED\n");
+	default:
+		return sprintf(buf, "INVALID STATE\n");
+	}
+
+}
+
+static DEVICE_ATTR(viport_state, S_IRUGO, show_viport_state, NULL);
+
+static ssize_t show_link_state(struct device *dev,
+			       struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+
+	switch (path->viport->link_state) {
+	case LINK_UNINITIALIZED:
+		return sprintf(buf, "LINK_UNINITIALIZED\n");
+	case LINK_INITIALIZE:
+		return sprintf(buf, "LINK_INITIALIZE\n");
+	case LINK_INITIALIZECONTROL:
+		return sprintf(buf, "LINK_INITIALIZECONTROL\n");
+	case LINK_INITIALIZEDATA:
+		return sprintf(buf, "LINK_INITIALIZEDATA\n");
+	case LINK_CONTROLCONNECT:
+		return sprintf(buf, "LINK_CONTROLCONNECT\n");
+	case LINK_CONTROLCONNECTWAIT:
+		return sprintf(buf, "LINK_CONTROLCONNECTWAIT\n");
+	case LINK_INITVNICREQ:
+		return sprintf(buf, "LINK_INITVNICREQ\n");
+	case LINK_INITVNICRSP:
+		return sprintf(buf, "LINK_INITVNICRSP\n");
+	case LINK_BEGINDATAPATH:
+		return sprintf(buf, "LINK_BEGINDATAPATH\n");
+	case LINK_CONFIGDATAPATHREQ:
+		return sprintf(buf, "LINK_CONFIGDATAPATHREQ\n");
+	case LINK_CONFIGDATAPATHRSP:
+		return sprintf(buf, "LINK_CONFIGDATAPATHRSP\n");
+	case LINK_DATACONNECT:
+		return sprintf(buf, "LINK_DATACONNECT\n");
+	case LINK_DATACONNECTWAIT:
+		return sprintf(buf, "LINK_DATACONNECTWAIT\n");
+	case LINK_XCHGPOOLREQ:
+		return sprintf(buf, "LINK_XCHGPOOLREQ\n");
+	case LINK_XCHGPOOLRSP:
+		return sprintf(buf, "LINK_XCHGPOOLRSP\n");
+	case LINK_INITIALIZED:
+		return sprintf(buf, "LINK_INITIALIZED\n");
+	case LINK_IDLE:
+		return sprintf(buf, "LINK_IDLE\n");
+	case LINK_IDLING:
+		return sprintf(buf, "LINK_IDLING\n");
+	case LINK_CONFIGLINKREQ:
+		return sprintf(buf, "LINK_CONFIGLINKREQ\n");
+	case LINK_CONFIGLINKRSP:
+		return sprintf(buf, "LINK_CONFIGLINKRSP\n");
+	case LINK_CONFIGADDRSREQ:
+		return sprintf(buf, "LINK_CONFIGADDRSREQ\n");
+	case LINK_CONFIGADDRSRSP:
+		return sprintf(buf, "LINK_CONFIGADDRSRSP\n");
+	case LINK_REPORTSTATREQ:
+		return sprintf(buf, "LINK_REPORTSTATREQ\n");
+	case LINK_REPORTSTATRSP:
+		return sprintf(buf, "LINK_REPORTSTATRSP\n");
+	case LINK_HEARTBEATREQ:
+		return sprintf(buf, "LINK_HEARTBEATREQ\n");
+	case LINK_HEARTBEATRSP:
+		return sprintf(buf, "LINK_HEARTBEATRSP\n");
+	case LINK_RESET:
+		return sprintf(buf, "LINK_RESET\n");
+	case LINK_RESETRSP:
+		return sprintf(buf, "LINK_RESETRSP\n");
+	case LINK_RESETCONTROL:
+		return sprintf(buf, "LINK_RESETCONTROL\n");
+	case LINK_RESETCONTROLRSP:
+		return sprintf(buf, "LINK_RESETCONTROLRSP\n");
+	case LINK_DATADISCONNECT:
+		return sprintf(buf, "LINK_DATADISCONNECT\n");
+	case LINK_CONTROLDISCONNECT:
+		return sprintf(buf, "LINK_CONTROLDISCONNECT\n");
+	case LINK_CLEANUPDATA:
+		return sprintf(buf, "LINK_CLEANUPDATA\n");
+	case LINK_CLEANUPCONTROL:
+		return sprintf(buf, "LINK_CLEANUPCONTROL\n");
+	case LINK_DISCONNECTED:
+		return sprintf(buf, "LINK_DISCONNECTED\n");
+	case LINK_RETRYWAIT:
+		return sprintf(buf, "LINK_RETRYWAIT\n");
+	default:
+		return sprintf(buf, "INVALID STATE\n");
+
+	}
+
+}
+static DEVICE_ATTR(link_state, S_IRUGO, show_link_state, NULL);
+
+static ssize_t show_heartbeat(struct device *dev,
+			      struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+
+	/* hb_inteval is in jiffies, convert it back to
+	 * 1/100ths of a second
+	 */
+	return sprintf(buf, "%d\n",
+		(jiffies_to_msecs(path->viport->config->hb_interval)/10));
+}
+
+static DEVICE_ATTR(heartbeat, S_IRUGO, show_heartbeat, NULL);
+
+static ssize_t show_ioc_guid(struct device *dev,
+			     struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+
+	return sprintf(buf, "%llx\n",
+				__be64_to_cpu(path->viport->config->ioc_guid));
+}
+
+static DEVICE_ATTR(ioc_guid, S_IRUGO, show_ioc_guid, NULL);
+
+static inline void get_dgid_string(u8 *dgid, char *buf)
+{
+	int i;
+	char holder[5];
+
+	for (i = 0; i < 16; i += 2) {
+		sprintf(holder, "%04x", be16_to_cpu(*(__be16 *)&dgid[i]));
+		strcat(buf, holder);
+	}
+
+	strcat(buf, "\n");
+}
+
+static ssize_t show_dgid(struct device *dev,
+			 struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info =	container_of(dev, struct dev_info, dev);
+
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+
+	get_dgid_string(path->viport->config->path_info.path.dgid.raw, buf);
+
+	return strlen(buf);
+}
+
+static DEVICE_ATTR(dgid, S_IRUGO, show_dgid, NULL);
+
+static ssize_t show_pkey(struct device *dev,
+			 struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info =	container_of(dev, struct dev_info, dev);
+
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+
+	return sprintf(buf, "%x\n", path->viport->config->path_info.path.pkey);
+}
+
+static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
+
+static ssize_t show_hca_info(struct device *dev,
+			     struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info =	container_of(dev, struct dev_info, dev);
+
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+
+	return sprintf(buf, "vnic-%s-%d\n", path->viport->config->ibdev->name,
+						path->viport->config->port);
+}
+
+static DEVICE_ATTR(hca_info, S_IRUGO, show_hca_info, NULL);
+
+static ssize_t show_ioc_string(struct device *dev,
+			       struct device_attribute *dev_attr, char *buf)
+{
+	struct dev_info *info =	container_of(dev, struct dev_info, dev);
+
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+
+	return sprintf(buf, "%s\n", path->viport->config->ioc_string);
+}
+
+static  DEVICE_ATTR(ioc_string, S_IRUGO, show_ioc_string, NULL);
+
+static ssize_t show_multicast_state(struct device *dev,
+				    struct device_attribute *dev_attr,
+				    char *buf)
+{
+	struct dev_info *info =	container_of(dev, struct dev_info, dev);
+
+	struct netpath *path = container_of(info, struct netpath, dev_info);
+
+	if (!(path->viport->features_supported & VNIC_FEAT_INBOUND_IB_MC))
+		return sprintf(buf, "feature not enabled\n");
+
+	switch (path->viport->mc_info.state) {
+	case MCAST_STATE_INVALID:
+		return sprintf(buf, "state=Invalid\n");
+	case MCAST_STATE_JOINING:
+		return sprintf(buf, "state=Joining MGID:" VNIC_GID_FMT "\n",
+			VNIC_GID_RAW_ARG(path->viport->mc_info.mgid.raw));
+	case MCAST_STATE_ATTACHING:
+		return sprintf(buf, "state=Attaching MGID:" VNIC_GID_FMT
+			" MLID:%X\n",
+			VNIC_GID_RAW_ARG(path->viport->mc_info.mgid.raw),
+			path->viport->mc_info.mlid);
+	case MCAST_STATE_JOINED_ATTACHED:
+		return sprintf(buf,
+			"state=Joined & Attached MGID:" VNIC_GID_FMT
+			" MLID:%X\n",
+			VNIC_GID_RAW_ARG(path->viport->mc_info.mgid.raw),
+			path->viport->mc_info.mlid);
+	case MCAST_STATE_DETACHING:
+		return sprintf(buf, "state=Detaching MGID: " VNIC_GID_FMT "\n",
+			VNIC_GID_RAW_ARG(path->viport->mc_info.mgid.raw));
+	case MCAST_STATE_RETRIED:
+		return sprintf(buf, "state=Retries Exceeded\n");
+	}
+	return sprintf(buf, "invalid state\n");
+}
+
+static  DEVICE_ATTR(multicast_state, S_IRUGO, show_multicast_state, NULL);
+
+static struct attribute *vnic_path_attrs[] = {
+	&dev_attr_viport_state.attr,
+	&dev_attr_link_state.attr,
+	&dev_attr_heartbeat.attr,
+	&dev_attr_ioc_guid.attr,
+	&dev_attr_dgid.attr,
+	&dev_attr_pkey.attr,
+	&dev_attr_hca_info.attr,
+	&dev_attr_ioc_string.attr,
+	&dev_attr_multicast_state.attr,
+	NULL
+};
+
+struct attribute_group vnic_path_attr_group = {
+	.attrs = vnic_path_attrs,
+};
+
+
+static int setup_path_class_files(struct netpath *path, char *name)
+{
+	init_completion(&path->dev_info.released);
+
+	path->dev_info.dev.class = NULL;
+	path->dev_info.dev.parent = &path->parent->dev_info.dev;
+	path->dev_info.dev.release = vnic_release_dev;
+	snprintf(path->dev_info.dev.bus_id, BUS_ID_SIZE, name);
+
+	if (device_register(&path->dev_info.dev)) {
+		SYS_ERROR("error in registering path class dev\n");
+		goto out;
+	}
+
+	if (sysfs_create_group(&path->dev_info.dev.kobj,
+			       &vnic_path_attr_group)) {
+		SYS_ERROR("error in creating vnic path group attrs");
+		goto err_path;
+	}
+
+	return 0;
+
+err_path:
+	device_unregister(&path->dev_info.dev);
+	wait_for_completion(&path->dev_info.released);
+out:
+	return -1;
+
+}
+
+static inline void update_dgids(u8 *old, u8 *new, char *vnic_name,
+				char *path_name)
+{
+	int i;
+
+	if (!memcmp(old, new, 16))
+		return;
+
+	printk(KERN_INFO PFX "Changing dgid from 0x");
+	print_dgid(old);
+	printk(" to 0x");
+	print_dgid(new);
+	printk(" for %s path of %s\n", path_name, vnic_name);
+	for (i = 0; i < 16; i++)
+		old[i] = new[i];
+}
+
+static inline void update_ioc_guids(struct path_param *params,
+				    struct netpath *path,
+				    char *vnic_name, char *path_name)
+{
+	u64 sid;
+
+	if (path->viport->config->ioc_guid == params->ioc_guid)
+		return;
+
+	printk(KERN_INFO PFX "Changing IOC GUID from 0x%llx to 0x%llx "
+			 "for %s path of %s\n",
+			 __be64_to_cpu(path->viport->config->ioc_guid),
+			 __be64_to_cpu(params->ioc_guid), path_name, vnic_name);
+
+	path->viport->config->ioc_guid = params->ioc_guid;
+
+	sid = (SST_AGN << 56) | (SST_OUI << 32) | (CONTROL_PATH_ID << 8)
+				| IOC_NUMBER(be64_to_cpu(params->ioc_guid));
+
+	path->viport->config->control_config.ib_config.service_id =
+							 cpu_to_be64(sid);
+
+	sid = (SST_AGN << 56) | (SST_OUI << 32) | (DATA_PATH_ID << 8)
+				| IOC_NUMBER(be64_to_cpu(params->ioc_guid));
+
+	path->viport->config->data_config.ib_config.service_id =
+							 cpu_to_be64(sid);
+}
+
+static inline void update_pkeys(__be16 *old, __be16 *new, char *vnic_name,
+				char *path_name)
+{
+	if (*old == *new)
+		return;
+
+	printk(KERN_INFO PFX "Changing P_Key from 0x%x to 0x%x "
+			 "for %s path of %s\n", *old, *new,
+			 path_name, vnic_name);
+	*old = *new;
+}
+
+static void update_ioc_strings(struct path_param *params, struct netpath *path,
+								char *path_name)
+{
+	if (!strcmp(params->ioc_string, path->viport->config->ioc_string))
+		return;
+
+	printk(KERN_INFO PFX "Changing ioc_string to %s for %s path of %s\n",
+				params->ioc_string, path_name, params->name);
+
+	strcpy(path->viport->config->ioc_string, params->ioc_string);
+}
+
+static void update_path_parameters(struct path_param *params,
+				   struct netpath *path)
+{
+	update_dgids(path->viport->config->path_info.path.dgid.raw,
+		params->dgid, params->name,
+		(path->second_bias ? "secondary" : "primary"));
+
+	update_ioc_guids(params, path, params->name,
+		(path->second_bias ? "secondary" : "primary"));
+
+	update_pkeys(&path->viport->config->path_info.path.pkey,
+		&params->pkey, params->name,
+		(path->second_bias ? "secondary" : "primary"));
+
+	update_ioc_strings(params, path,
+		(path->second_bias ? "secondary" : "primary"));
+}
+
+static ssize_t update_params_and_connect(struct path_param *params,
+					 struct netpath *path, size_t count)
+{
+	if (is_dgid_zero(params->dgid) && params->ioc_guid != 0 &&
+	    params->pkey != 0) {
+
+		if (!memcmp(path->viport->config->path_info.path.dgid.raw,
+			params->dgid, 16) &&
+		    params->ioc_guid == path->viport->config->ioc_guid &&
+		    params->pkey     == path->viport->config->path_info.path.pkey) {
+
+			printk(KERN_WARNING PFX "All of the dgid, ioc_guid and "
+						"pkeys are same as the existing"
+						" one. Not updating values.\n");
+			return -EINVAL;
+		} else {
+			if (path->viport->state == VIPORT_CONNECTED) {
+				printk(KERN_WARNING PFX "%s path of %s "
+					"interface is already in connected "
+					"state. Not updating values.\n",
+				(path->second_bias ? "Secondary" : "Primary"),
+				path->parent->config->name);
+				return -EINVAL;
+			} else {
+				update_path_parameters(params, path);
+				viport_kick(path->viport);
+				vnic_disconnected(path->parent, path);
+				return count;
+			}
+		}
+	} else {
+		printk(KERN_WARNING PFX "Either dgid, iocguid, pkey is zero. "
+					"No update.\n");
+		return -EINVAL;
+	}
+}
+
+ssize_t vnic_create_primary(struct device *dev,
+			    struct device_attribute *dev_attr, const char *buf,
+			    size_t count)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+	struct vnic_ib_port *target =
+	    container_of(info, struct vnic_ib_port, pdev_info);
+
+	struct path_param param;
+	int ret = -EINVAL;
+	struct vnic *vnic;
+	struct list_head    *ptr;
+
+	param.instance = 0;
+	param.rx_csum = -1;
+	param.tx_csum = -1;
+	param.heartbeat = -1;
+	param.ib_multicast = -1;
+	*param.ioc_string = '\0';
+
+	ret = vnic_parse_options(buf, &param);
+
+	if (ret)
+		goto out;
+
+	list_for_each(ptr, &vnic_list) {
+		vnic = list_entry(ptr, struct vnic, list_ptrs);
+		if (!strcmp(vnic->config->name, param.name)) {
+			ret = update_params_and_connect(&param,
+							&vnic->primary_path,
+							count);
+			goto out;
+		}
+	 }
+
+	param.ibdev = target->dev->dev;
+	param.ibport = target;
+	param.port = target->port_num;
+
+	vnic = create_vnic(&param);
+	if (!vnic) {
+		printk(KERN_ERR PFX "creating vnic failed\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (create_netpath(&vnic->primary_path, &param)) {
+		printk(KERN_ERR PFX "creating primary netpath failed\n");
+		goto free_vnic;
+	}
+
+	if (setup_path_class_files(&vnic->primary_path, "primary_path"))
+		goto free_vnic;
+
+	if (vnic && !vnic->primary_path.viport) {
+		printk(KERN_ERR PFX "no valid netpaths\n");
+		goto free_vnic;
+	}
+
+	return count;
+
+free_vnic:
+	vnic_free(vnic);
+	ret = -EINVAL;
+out:
+	return ret;
+}
+
+ssize_t vnic_create_secondary(struct device *dev,
+			      struct device_attribute *dev_attr,
+			      const char *buf, size_t count)
+{
+	struct dev_info *info = container_of(dev, struct dev_info, dev);
+	struct vnic_ib_port *target =
+	    container_of(info, struct vnic_ib_port, pdev_info);
+
+	struct path_param param;
+	struct vnic *vnic = NULL;
+	int ret = -EINVAL;
+	struct list_head *ptr;
+	int found = 0;
+
+	param.instance = 0;
+	param.rx_csum = -1;
+	param.tx_csum = -1;
+	param.heartbeat = -1;
+	param.ib_multicast = -1;
+	*param.ioc_string = '\0';
+
+	ret = vnic_parse_options(buf, &param);
+
+	if (ret)
+		goto out;
+
+	list_for_each(ptr, &vnic_list) {
+		vnic = list_entry(ptr, struct vnic, list_ptrs);
+		if (!strncmp(vnic->config->name, param.name, IFNAMSIZ)) {
+			if (vnic->secondary_path.viport) {
+				ret = update_params_and_connect(&param,
+								&vnic->secondary_path,
+								count);
+				goto out;
+			}
+			found = 1;
+			break;
+		}
+	}
+
+	if (!found) {
+		printk(KERN_ERR PFX
+		       "primary connection with name '%s' does not exist\n",
+		       param.name);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	param.ibdev = target->dev->dev;
+	param.ibport = target;
+	param.port = target->port_num;
+
+	if (create_netpath(&vnic->secondary_path, &param)) {
+		printk(KERN_ERR PFX "creating secondary netpath failed\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (setup_path_class_files(&vnic->secondary_path, "secondary_path"))
+		goto free_vnic;
+
+	return count;
+
+free_vnic:
+	vnic_free(vnic);
+	ret = -EINVAL;
+out:
+	return ret;
+}
diff --git a/drivers/infiniband/ulp/qlgc_vnic/vnic_sys.h b/drivers/infiniband/ulp/qlgc_vnic/vnic_sys.h
new file mode 100644
index 0000000..b41e770
--- /dev/null
+++ b/drivers/infiniband/ulp/qlgc_vnic/vnic_sys.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2006 QLogic, Inc.  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.
+ */
+
+#ifndef VNIC_SYS_H_INCLUDED
+#define VNIC_SYS_H_INCLUDED
+
+struct dev_info {
+	struct device		dev;
+	struct completion	released;
+};
+
+extern struct class vnic_class;
+extern struct dev_info interface_dev;
+extern struct attribute_group vnic_dev_attr_group;
+extern struct attribute_group vnic_path_attr_group;
+extern struct device_attribute dev_attr_create_primary;
+extern struct device_attribute dev_attr_create_secondary;
+extern struct device_attribute dev_attr_delete_vnic;
+
+extern void vnic_release_dev(struct device *dev);
+
+extern ssize_t vnic_create_primary(struct device *dev,
+				   struct device_attribute *dev_attr,
+				   const char *buf, size_t count);
+
+extern ssize_t vnic_create_secondary(struct device *dev,
+				     struct device_attribute *dev_attr,
+				     const char *buf, size_t count);
+
+extern ssize_t vnic_delete(struct device *dev,
+			   struct device_attribute *dev_attr,
+			   const char *buf, size_t count);
+#endif	/*VNIC_SYS_H_INCLUDED*/