[linux-2.6-block.git] / drivers / infiniband / hw / ocrdma / ocrdma_main.c

/*******************************************************************
 * This file is part of the Emulex RoCE Device Driver for          *
 * RoCE (RDMA over Converged Ethernet) adapters.                   *
 * Copyright (C) 2008-2012 Emulex. All rights reserved.            *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.com                                                  *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *
 * Contact Information:
 * linux-drivers@emulex.com
 *
 * Emulex
 * 3333 Susan Street
 * Costa Mesa, CA 92626
 *******************************************************************/

#include <linux/module.h>
#include <linux/idr.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_addr.h>

#include <linux/netdevice.h>
#include <net/addrconf.h>

#include "ocrdma.h"
#include "ocrdma_verbs.h"
#include "ocrdma_ah.h"
#include "be_roce.h"
#include "ocrdma_hw.h"
#include "ocrdma_stats.h"
#include "ocrdma_abi.h"

MODULE_VERSION(OCRDMA_ROCE_DRV_VERSION);
MODULE_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION);
MODULE_AUTHOR("Emulex Corporation");
MODULE_LICENSE("GPL");

static LIST_HEAD(ocrdma_dev_list);
static DEFINE_SPINLOCK(ocrdma_devlist_lock);
static DEFINE_IDR(ocrdma_dev_id);

static union ib_gid ocrdma_zero_sgid;

void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid)
{
	u8 mac_addr[6];

	memcpy(&mac_addr[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
	guid[0] = mac_addr[0] ^ 2;
	guid[1] = mac_addr[1];
	guid[2] = mac_addr[2];
	guid[3] = 0xff;
	guid[4] = 0xfe;
	guid[5] = mac_addr[3];
	guid[6] = mac_addr[4];
	guid[7] = mac_addr[5];
}

static bool ocrdma_add_sgid(struct ocrdma_dev *dev, union ib_gid *new_sgid)
{
	int i;
	unsigned long flags;

	memset(&ocrdma_zero_sgid, 0, sizeof(union ib_gid));


	spin_lock_irqsave(&dev->sgid_lock, flags);
	for (i = 0; i < OCRDMA_MAX_SGID; i++) {
		if (!memcmp(&dev->sgid_tbl[i], &ocrdma_zero_sgid,
			    sizeof(union ib_gid))) {
			/* found free entry */
			memcpy(&dev->sgid_tbl[i], new_sgid,
			       sizeof(union ib_gid));
			spin_unlock_irqrestore(&dev->sgid_lock, flags);
			return true;
		} else if (!memcmp(&dev->sgid_tbl[i], new_sgid,
				   sizeof(union ib_gid))) {
			/* entry already present, no addition is required. */
			spin_unlock_irqrestore(&dev->sgid_lock, flags);
			return false;
		}
	}
	spin_unlock_irqrestore(&dev->sgid_lock, flags);
	return false;
}

static bool ocrdma_del_sgid(struct ocrdma_dev *dev, union ib_gid *sgid)
{
	int found = false;
	int i;
	unsigned long flags;


	spin_lock_irqsave(&dev->sgid_lock, flags);
	/* first is default sgid, which cannot be deleted. */
	for (i = 1; i < OCRDMA_MAX_SGID; i++) {
		if (!memcmp(&dev->sgid_tbl[i], sgid, sizeof(union ib_gid))) {
			/* found matching entry */
			memset(&dev->sgid_tbl[i], 0, sizeof(union ib_gid));
			found = true;
			break;
		}
	}
	spin_unlock_irqrestore(&dev->sgid_lock, flags);
	return found;
}

static int ocrdma_addr_event(unsigned long event, struct net_device *netdev,
			     union ib_gid *gid)
{
	struct ib_event gid_event;
	struct ocrdma_dev *dev;
	bool found = false;
	bool updated = false;
	bool is_vlan = false;

	is_vlan = netdev->priv_flags & IFF_802_1Q_VLAN;
	if (is_vlan)
		netdev = rdma_vlan_dev_real_dev(netdev);

	rcu_read_lock();
	list_for_each_entry_rcu(dev, &ocrdma_dev_list, entry) {
		if (dev->nic_info.netdev == netdev) {
			found = true;
			break;
		}
	}
	rcu_read_unlock();

	if (!found)
		return NOTIFY_DONE;

	mutex_lock(&dev->dev_lock);
	switch (event) {
	case NETDEV_UP:
		updated = ocrdma_add_sgid(dev, gid);
		break;
	case NETDEV_DOWN:
		updated = ocrdma_del_sgid(dev, gid);
		break;
	default:
		break;
	}
	if (updated) {
		/* GID table updated, notify the consumers about it */
		gid_event.device = &dev->ibdev;
		gid_event.element.port_num = 1;
		gid_event.event = IB_EVENT_GID_CHANGE;
		ib_dispatch_event(&gid_event);
	}
	mutex_unlock(&dev->dev_lock);
	return NOTIFY_OK;
}

static int ocrdma_inetaddr_event(struct notifier_block *notifier,
				  unsigned long event, void *ptr)
{
	struct in_ifaddr *ifa = ptr;
	union ib_gid gid;
	struct net_device *netdev = ifa->ifa_dev->dev;

	ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
	return ocrdma_addr_event(event, netdev, &gid);
}

static struct notifier_block ocrdma_inetaddr_notifier = {
	.notifier_call = ocrdma_inetaddr_event
};

#if IS_ENABLED(CONFIG_IPV6)

static int ocrdma_inet6addr_event(struct notifier_block *notifier,
				  unsigned long event, void *ptr)
{
	struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
	union  ib_gid *gid = (union ib_gid *)&ifa->addr;
	struct net_device *netdev = ifa->idev->dev;
	return ocrdma_addr_event(event, netdev, gid);
}

static struct notifier_block ocrdma_inet6addr_notifier = {
	.notifier_call = ocrdma_inet6addr_event
};

#endif /* IPV6 and VLAN */

static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device,
					      u8 port_num)
{
	return IB_LINK_LAYER_ETHERNET;
}

static int ocrdma_register_device(struct ocrdma_dev *dev)
{
	strlcpy(dev->ibdev.name, "ocrdma%d", IB_DEVICE_NAME_MAX);
	ocrdma_get_guid(dev, (u8 *)&dev->ibdev.node_guid);
	memcpy(dev->ibdev.node_desc, OCRDMA_NODE_DESC,
	       sizeof(OCRDMA_NODE_DESC));
	dev->ibdev.owner = THIS_MODULE;
	dev->ibdev.uverbs_abi_ver = OCRDMA_ABI_VERSION;
	dev->ibdev.uverbs_cmd_mask =
	    OCRDMA_UVERBS(GET_CONTEXT) |
	    OCRDMA_UVERBS(QUERY_DEVICE) |
	    OCRDMA_UVERBS(QUERY_PORT) |
	    OCRDMA_UVERBS(ALLOC_PD) |
	    OCRDMA_UVERBS(DEALLOC_PD) |
	    OCRDMA_UVERBS(REG_MR) |
	    OCRDMA_UVERBS(DEREG_MR) |
	    OCRDMA_UVERBS(CREATE_COMP_CHANNEL) |
	    OCRDMA_UVERBS(CREATE_CQ) |
	    OCRDMA_UVERBS(RESIZE_CQ) |
	    OCRDMA_UVERBS(DESTROY_CQ) |
	    OCRDMA_UVERBS(REQ_NOTIFY_CQ) |
	    OCRDMA_UVERBS(CREATE_QP) |
	    OCRDMA_UVERBS(MODIFY_QP) |
	    OCRDMA_UVERBS(QUERY_QP) |
	    OCRDMA_UVERBS(DESTROY_QP) |
	    OCRDMA_UVERBS(POLL_CQ) |
	    OCRDMA_UVERBS(POST_SEND) |
	    OCRDMA_UVERBS(POST_RECV);

	dev->ibdev.uverbs_cmd_mask |=
	    OCRDMA_UVERBS(CREATE_AH) |
	     OCRDMA_UVERBS(MODIFY_AH) |
	     OCRDMA_UVERBS(QUERY_AH) |
	     OCRDMA_UVERBS(DESTROY_AH);

	dev->ibdev.node_type = RDMA_NODE_IB_CA;
	dev->ibdev.phys_port_cnt = 1;
	dev->ibdev.num_comp_vectors = 1;

	/* mandatory verbs. */
	dev->ibdev.query_device = ocrdma_query_device;
	dev->ibdev.query_port = ocrdma_query_port;
	dev->ibdev.modify_port = ocrdma_modify_port;
	dev->ibdev.query_gid = ocrdma_query_gid;
	dev->ibdev.get_link_layer = ocrdma_link_layer;
	dev->ibdev.alloc_pd = ocrdma_alloc_pd;
	dev->ibdev.dealloc_pd = ocrdma_dealloc_pd;

	dev->ibdev.create_cq = ocrdma_create_cq;
	dev->ibdev.destroy_cq = ocrdma_destroy_cq;
	dev->ibdev.resize_cq = ocrdma_resize_cq;

	dev->ibdev.create_qp = ocrdma_create_qp;
	dev->ibdev.modify_qp = ocrdma_modify_qp;
	dev->ibdev.query_qp = ocrdma_query_qp;
	dev->ibdev.destroy_qp = ocrdma_destroy_qp;

	dev->ibdev.query_pkey = ocrdma_query_pkey;
	dev->ibdev.create_ah = ocrdma_create_ah;
	dev->ibdev.destroy_ah = ocrdma_destroy_ah;
	dev->ibdev.query_ah = ocrdma_query_ah;
	dev->ibdev.modify_ah = ocrdma_modify_ah;

	dev->ibdev.poll_cq = ocrdma_poll_cq;
	dev->ibdev.post_send = ocrdma_post_send;
	dev->ibdev.post_recv = ocrdma_post_recv;
	dev->ibdev.req_notify_cq = ocrdma_arm_cq;

	dev->ibdev.get_dma_mr = ocrdma_get_dma_mr;
	dev->ibdev.reg_phys_mr = ocrdma_reg_kernel_mr;
	dev->ibdev.dereg_mr = ocrdma_dereg_mr;
	dev->ibdev.reg_user_mr = ocrdma_reg_user_mr;

	dev->ibdev.alloc_fast_reg_mr = ocrdma_alloc_frmr;
	dev->ibdev.alloc_fast_reg_page_list = ocrdma_alloc_frmr_page_list;
	dev->ibdev.free_fast_reg_page_list = ocrdma_free_frmr_page_list;

	/* mandatory to support user space verbs consumer. */
	dev->ibdev.alloc_ucontext = ocrdma_alloc_ucontext;
	dev->ibdev.dealloc_ucontext = ocrdma_dealloc_ucontext;
	dev->ibdev.mmap = ocrdma_mmap;
	dev->ibdev.dma_device = &dev->nic_info.pdev->dev;

	dev->ibdev.process_mad = ocrdma_process_mad;

	if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
		dev->ibdev.uverbs_cmd_mask |=
		     OCRDMA_UVERBS(CREATE_SRQ) |
		     OCRDMA_UVERBS(MODIFY_SRQ) |
		     OCRDMA_UVERBS(QUERY_SRQ) |
		     OCRDMA_UVERBS(DESTROY_SRQ) |
		     OCRDMA_UVERBS(POST_SRQ_RECV);

		dev->ibdev.create_srq = ocrdma_create_srq;
		dev->ibdev.modify_srq = ocrdma_modify_srq;
		dev->ibdev.query_srq = ocrdma_query_srq;
		dev->ibdev.destroy_srq = ocrdma_destroy_srq;
		dev->ibdev.post_srq_recv = ocrdma_post_srq_recv;
	}
	return ib_register_device(&dev->ibdev, NULL);
}

static int ocrdma_alloc_resources(struct ocrdma_dev *dev)
{
	mutex_init(&dev->dev_lock);
	dev->sgid_tbl = kzalloc(sizeof(union ib_gid) *
				OCRDMA_MAX_SGID, GFP_KERNEL);
	if (!dev->sgid_tbl)
		goto alloc_err;
	spin_lock_init(&dev->sgid_lock);

	dev->cq_tbl = kzalloc(sizeof(struct ocrdma_cq *) *
			      OCRDMA_MAX_CQ, GFP_KERNEL);
	if (!dev->cq_tbl)
		goto alloc_err;

	if (dev->attr.max_qp) {
		dev->qp_tbl = kzalloc(sizeof(struct ocrdma_qp *) *
				      OCRDMA_MAX_QP, GFP_KERNEL);
		if (!dev->qp_tbl)
			goto alloc_err;
	}
	spin_lock_init(&dev->av_tbl.lock);
	spin_lock_init(&dev->flush_q_lock);
	return 0;
alloc_err:
	pr_err("%s(%d) error.\n", __func__, dev->id);
	return -ENOMEM;
}

static void ocrdma_free_resources(struct ocrdma_dev *dev)
{
	kfree(dev->qp_tbl);
	kfree(dev->cq_tbl);
	kfree(dev->sgid_tbl);
}

/* OCRDMA sysfs interface */
static ssize_t show_rev(struct device *device, struct device_attribute *attr,
			char *buf)
{
	struct ocrdma_dev *dev = dev_get_drvdata(device);

	return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->nic_info.pdev->vendor);
}

static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
			char *buf)
{
	struct ocrdma_dev *dev = dev_get_drvdata(device);

	return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->attr.fw_ver[0]);
}

static ssize_t show_hca_type(struct device *device,
			     struct device_attribute *attr, char *buf)
{
	struct ocrdma_dev *dev = dev_get_drvdata(device);

	return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->model_number[0]);
}

static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca_type, NULL);

static struct device_attribute *ocrdma_attributes[] = {
	&dev_attr_hw_rev,
	&dev_attr_fw_ver,
	&dev_attr_hca_type
};

static void ocrdma_remove_sysfiles(struct ocrdma_dev *dev)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++)
		device_remove_file(&dev->ibdev.dev, ocrdma_attributes[i]);
}

static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
{
	int status = 0, i;
	struct ocrdma_dev *dev;

	dev = (struct ocrdma_dev *)ib_alloc_device(sizeof(struct ocrdma_dev));
	if (!dev) {
		pr_err("Unable to allocate ib device\n");
		return NULL;
	}
	dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL);
	if (!dev->mbx_cmd)
		goto idr_err;

	memcpy(&dev->nic_info, dev_info, sizeof(*dev_info));
	dev->id = idr_alloc(&ocrdma_dev_id, NULL, 0, 0, GFP_KERNEL);
	if (dev->id < 0)
		goto idr_err;

	status = ocrdma_init_hw(dev);
	if (status)
		goto init_err;

	status = ocrdma_alloc_resources(dev);
	if (status)
		goto alloc_err;

	ocrdma_init_service_level(dev);
	status = ocrdma_register_device(dev);
	if (status)
		goto alloc_err;

	for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++)
		if (device_create_file(&dev->ibdev.dev, ocrdma_attributes[i]))
			goto sysfs_err;
	spin_lock(&ocrdma_devlist_lock);
	list_add_tail_rcu(&dev->entry, &ocrdma_dev_list);
	spin_unlock(&ocrdma_devlist_lock);
	/* Init stats */
	ocrdma_add_port_stats(dev);

	pr_info("%s %s: %s \"%s\" port %d\n",
		dev_name(&dev->nic_info.pdev->dev), hca_name(dev),
		port_speed_string(dev), dev->model_number,
		dev->hba_port_num);
	pr_info("%s ocrdma%d driver loaded successfully\n",
		dev_name(&dev->nic_info.pdev->dev), dev->id);
	return dev;

sysfs_err:
	ocrdma_remove_sysfiles(dev);
alloc_err:
	ocrdma_free_resources(dev);
	ocrdma_cleanup_hw(dev);
init_err:
	idr_remove(&ocrdma_dev_id, dev->id);
idr_err:
	kfree(dev->mbx_cmd);
	ib_dealloc_device(&dev->ibdev);
	pr_err("%s() leaving. ret=%d\n", __func__, status);
	return NULL;
}

static void ocrdma_remove_free(struct rcu_head *rcu)
{
	struct ocrdma_dev *dev = container_of(rcu, struct ocrdma_dev, rcu);

	idr_remove(&ocrdma_dev_id, dev->id);
	kfree(dev->mbx_cmd);
	ib_dealloc_device(&dev->ibdev);
}

static void ocrdma_remove(struct ocrdma_dev *dev)
{
	/* first unregister with stack to stop all the active traffic
	 * of the registered clients.
	 */
	ocrdma_rem_port_stats(dev);
	ocrdma_remove_sysfiles(dev);

	ib_unregister_device(&dev->ibdev);

	spin_lock(&ocrdma_devlist_lock);
	list_del_rcu(&dev->entry);
	spin_unlock(&ocrdma_devlist_lock);

	ocrdma_free_resources(dev);
	ocrdma_cleanup_hw(dev);

	call_rcu(&dev->rcu, ocrdma_remove_free);
}

static int ocrdma_open(struct ocrdma_dev *dev)
{
	struct ib_event port_event;

	port_event.event = IB_EVENT_PORT_ACTIVE;
	port_event.element.port_num = 1;
	port_event.device = &dev->ibdev;
	ib_dispatch_event(&port_event);
	return 0;
}

static int ocrdma_close(struct ocrdma_dev *dev)
{
	int i;
	struct ocrdma_qp *qp, **cur_qp;
	struct ib_event err_event;
	struct ib_qp_attr attrs;
	int attr_mask = IB_QP_STATE;

	attrs.qp_state = IB_QPS_ERR;
	mutex_lock(&dev->dev_lock);
	if (dev->qp_tbl) {
		cur_qp = dev->qp_tbl;
		for (i = 0; i < OCRDMA_MAX_QP; i++) {
			qp = cur_qp[i];
			if (qp && qp->ibqp.qp_type != IB_QPT_GSI) {
				/* change the QP state to ERROR */
				_ocrdma_modify_qp(&qp->ibqp, &attrs, attr_mask);

				err_event.event = IB_EVENT_QP_FATAL;
				err_event.element.qp = &qp->ibqp;
				err_event.device = &dev->ibdev;
				ib_dispatch_event(&err_event);
			}
		}
	}
	mutex_unlock(&dev->dev_lock);

	err_event.event = IB_EVENT_PORT_ERR;
	err_event.element.port_num = 1;
	err_event.device = &dev->ibdev;
	ib_dispatch_event(&err_event);
	return 0;
}

/* event handling via NIC driver ensures that all the NIC specific
 * initialization done before RoCE driver notifies
 * event to stack.
 */
static void ocrdma_event_handler(struct ocrdma_dev *dev, u32 event)
{
	switch (event) {
	case BE_DEV_UP:
		ocrdma_open(dev);
		break;
	case BE_DEV_DOWN:
		ocrdma_close(dev);
		break;
	}
}

static struct ocrdma_driver ocrdma_drv = {
	.name			= "ocrdma_driver",
	.add			= ocrdma_add,
	.remove			= ocrdma_remove,
	.state_change_handler	= ocrdma_event_handler,
	.be_abi_version		= OCRDMA_BE_ROCE_ABI_VERSION,
};

static void ocrdma_unregister_inet6addr_notifier(void)
{
#if IS_ENABLED(CONFIG_IPV6)
	unregister_inet6addr_notifier(&ocrdma_inet6addr_notifier);
#endif
}

static void ocrdma_unregister_inetaddr_notifier(void)
{
	unregister_inetaddr_notifier(&ocrdma_inetaddr_notifier);
}

static int __init ocrdma_init_module(void)
{
	int status;

	ocrdma_init_debugfs();

	status = register_inetaddr_notifier(&ocrdma_inetaddr_notifier);
	if (status)
		return status;

#if IS_ENABLED(CONFIG_IPV6)
	status = register_inet6addr_notifier(&ocrdma_inet6addr_notifier);
	if (status)
		goto err_notifier6;
#endif

	status = be_roce_register_driver(&ocrdma_drv);
	if (status)
		goto err_be_reg;

	return 0;

err_be_reg:
	ocrdma_unregister_inet6addr_notifier();
err_notifier6:
	ocrdma_unregister_inetaddr_notifier();
	return status;
}

static void __exit ocrdma_exit_module(void)
{
	be_roce_unregister_driver(&ocrdma_drv);
	ocrdma_unregister_inet6addr_notifier();
	ocrdma_unregister_inetaddr_notifier();
	ocrdma_rem_debugfs();
}

module_init(ocrdma_init_module);
module_exit(ocrdma_exit_module);
Commit	Line	Data
fe2caefc PP	1	/*******************************************************************
	2	* This file is part of the Emulex RoCE Device Driver for *
	3	* RoCE (RDMA over Converged Ethernet) adapters. *
	4	* Copyright (C) 2008-2012 Emulex. All rights reserved. *
	5	* EMULEX and SLI are trademarks of Emulex. *
	6	* www.emulex.com *
	7	* *
	8	* This program is free software; you can redistribute it and/or *
	9	* modify it under the terms of version 2 of the GNU General *
	10	* Public License as published by the Free Software Foundation. *
	11	* This program is distributed in the hope that it will be useful. *
	12	* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
	13	* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
	14	* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
	15	* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
	16	* TO BE LEGALLY INVALID. See the GNU General Public License for *
	17	* more details, a copy of which can be found in the file COPYING *
	18	* included with this package. *
	19	*
	20	* Contact Information:
	21	* linux-drivers@emulex.com
	22	*
	23	* Emulex
	24	* 3333 Susan Street
	25	* Costa Mesa, CA 92626
	26	*******************************************************************/
	27
	28	#include <linux/module.h>
fe2caefc PP	29	#include <linux/idr.h>
	30	#include <rdma/ib_verbs.h>
	31	#include <rdma/ib_user_verbs.h>
	32	#include <rdma/ib_addr.h>
	33
	34	#include <linux/netdevice.h>
	35	#include <net/addrconf.h>
	36
	37	#include "ocrdma.h"
	38	#include "ocrdma_verbs.h"
	39	#include "ocrdma_ah.h"
	40	#include "be_roce.h"
	41	#include "ocrdma_hw.h"
a51f06e1	42	#include "ocrdma_stats.h"
38754397	43	#include "ocrdma_abi.h"
fe2caefc	44
0154410b DS	45	MODULE_VERSION(OCRDMA_ROCE_DRV_VERSION);
0154410b DS	46	MODULE_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION);
fe2caefc PP	47	MODULE_AUTHOR("Emulex Corporation");
	48	MODULE_LICENSE("GPL");
	49
	50	static LIST_HEAD(ocrdma_dev_list);
3e4d60a8	51	static DEFINE_SPINLOCK(ocrdma_devlist_lock);
fe2caefc PP	52	static DEFINE_IDR(ocrdma_dev_id);
	53
	54	static union ib_gid ocrdma_zero_sgid;
fe2caefc	55
fe2caefc PP	56	void ocrdma_get_guid(struct ocrdma_dev dev, u8 guid)
	57	{
	58	u8 mac_addr[6];
	59
	60	memcpy(&mac_addr[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
	61	guid[0] = mac_addr[0] ^ 2;
	62	guid[1] = mac_addr[1];
	63	guid[2] = mac_addr[2];
	64	guid[3] = 0xff;
	65	guid[4] = 0xfe;
	66	guid[5] = mac_addr[3];
	67	guid[6] = mac_addr[4];
	68	guid[7] = mac_addr[5];
	69	}
	70
37721d85	71	static bool ocrdma_add_sgid(struct ocrdma_dev dev, union ib_gid new_sgid)
fe2caefc PP	72	{
fe2caefc PP	73	int i;
fe2caefc PP	74	unsigned long flags;
	75
	76	memset(&ocrdma_zero_sgid, 0, sizeof(union ib_gid));
	77
fe2caefc PP	78
	79	spin_lock_irqsave(&dev->sgid_lock, flags);
	80	for (i = 0; i < OCRDMA_MAX_SGID; i++) {
	81	if (!memcmp(&dev->sgid_tbl[i], &ocrdma_zero_sgid,
	82	sizeof(union ib_gid))) {
	83	/* found free entry */
37721d85	84	memcpy(&dev->sgid_tbl[i], new_sgid,
6ab6827e PP	85	sizeof(union ib_gid));
	86	spin_unlock_irqrestore(&dev->sgid_lock, flags);
	87	return true;
37721d85	88	} else if (!memcmp(&dev->sgid_tbl[i], new_sgid,
fe2caefc PP	89	sizeof(union ib_gid))) {
	90	/* entry already present, no addition is required. */
	91	spin_unlock_irqrestore(&dev->sgid_lock, flags);
6ab6827e	92	return false;
fe2caefc PP	93	}
fe2caefc PP	94	}
fe2caefc	95	spin_unlock_irqrestore(&dev->sgid_lock, flags);
6ab6827e	96	return false;
fe2caefc PP	97	}
fe2caefc PP	98
37721d85	99	static bool ocrdma_del_sgid(struct ocrdma_dev dev, union ib_gid sgid)
fe2caefc PP	100	{
	101	int found = false;
	102	int i;
fe2caefc PP	103	unsigned long flags;
fe2caefc PP	104
fe2caefc PP	105
	106	spin_lock_irqsave(&dev->sgid_lock, flags);
	107	/* first is default sgid, which cannot be deleted. */
	108	for (i = 1; i < OCRDMA_MAX_SGID; i++) {
37721d85	109	if (!memcmp(&dev->sgid_tbl[i], sgid, sizeof(union ib_gid))) {
fe2caefc PP	110	/* found matching entry */
	111	memset(&dev->sgid_tbl[i], 0, sizeof(union ib_gid));
	112	found = true;
	113	break;
	114	}
	115	}
	116	spin_unlock_irqrestore(&dev->sgid_lock, flags);
	117	return found;
	118	}
	119
37721d85 MS	120	static int ocrdma_addr_event(unsigned long event, struct net_device *netdev,
37721d85 MS	121	union ib_gid *gid)
6ab6827e	122	{
fe2caefc PP	123	struct ib_event gid_event;
	124	struct ocrdma_dev *dev;
	125	bool found = false;
6ab6827e	126	bool updated = false;
fe2caefc	127	bool is_vlan = false;
fe2caefc	128
d549f55f	129	is_vlan = netdev->priv_flags & IFF_802_1Q_VLAN;
37721d85	130	if (is_vlan)
09de3f13	131	netdev = rdma_vlan_dev_real_dev(netdev);
d549f55f	132
3e4d60a8 SL	133	rcu_read_lock();
3e4d60a8 SL	134	list_for_each_entry_rcu(dev, &ocrdma_dev_list, entry) {
fe2caefc PP	135	if (dev->nic_info.netdev == netdev) {
	136	found = true;
	137	break;
	138	}
	139	}
3e4d60a8	140	rcu_read_unlock();
fe2caefc PP	141
	142	if (!found)
	143	return NOTIFY_DONE;
fe2caefc PP	144
	145	mutex_lock(&dev->dev_lock);
	146	switch (event) {
	147	case NETDEV_UP:
37721d85	148	updated = ocrdma_add_sgid(dev, gid);
fe2caefc PP	149	break;
fe2caefc PP	150	case NETDEV_DOWN:
37721d85	151	updated = ocrdma_del_sgid(dev, gid);
fe2caefc PP	152	break;
	153	default:
	154	break;
	155	}
6ab6827e PP	156	if (updated) {
	157	/* GID table updated, notify the consumers about it */
	158	gid_event.device = &dev->ibdev;
	159	gid_event.element.port_num = 1;
	160	gid_event.event = IB_EVENT_GID_CHANGE;
	161	ib_dispatch_event(&gid_event);
	162	}
fe2caefc PP	163	mutex_unlock(&dev->dev_lock);
	164	return NOTIFY_OK;
	165	}
	166
37721d85 MS	167	static int ocrdma_inetaddr_event(struct notifier_block *notifier,
	168	unsigned long event, void *ptr)
	169	{
	170	struct in_ifaddr *ifa = ptr;
	171	union ib_gid gid;
	172	struct net_device *netdev = ifa->ifa_dev->dev;
	173
	174	ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
	175	return ocrdma_addr_event(event, netdev, &gid);
	176	}
	177
31ab8acb RD	178	static struct notifier_block ocrdma_inetaddr_notifier = {
	179	.notifier_call = ocrdma_inetaddr_event
	180	};
	181
37721d85 MS	182	#if IS_ENABLED(CONFIG_IPV6)
	183
	184	static int ocrdma_inet6addr_event(struct notifier_block *notifier,
	185	unsigned long event, void *ptr)
	186	{
	187	struct inet6_ifaddr ifa = (struct inet6_ifaddr )ptr;
	188	union ib_gid gid = (union ib_gid )&ifa->addr;
	189	struct net_device *netdev = ifa->idev->dev;
	190	return ocrdma_addr_event(event, netdev, gid);
	191	}
	192
34955669 RD	193	static struct notifier_block ocrdma_inet6addr_notifier = {
	194	.notifier_call = ocrdma_inet6addr_event
	195	};
	196
6ab6827e	197	#endif /* IPV6 and VLAN */
34955669	198
fe2caefc PP	199	static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device,
	200	u8 port_num)
	201	{
	202	return IB_LINK_LAYER_ETHERNET;
	203	}
	204
abe3afac	205	static int ocrdma_register_device(struct ocrdma_dev *dev)
fe2caefc PP	206	{
	207	strlcpy(dev->ibdev.name, "ocrdma%d", IB_DEVICE_NAME_MAX);
	208	ocrdma_get_guid(dev, (u8 *)&dev->ibdev.node_guid);
	209	memcpy(dev->ibdev.node_desc, OCRDMA_NODE_DESC,
	210	sizeof(OCRDMA_NODE_DESC));
	211	dev->ibdev.owner = THIS_MODULE;
38754397	212	dev->ibdev.uverbs_abi_ver = OCRDMA_ABI_VERSION;
fe2caefc PP	213	dev->ibdev.uverbs_cmd_mask =
	214	OCRDMA_UVERBS(GET_CONTEXT) \|
	215	OCRDMA_UVERBS(QUERY_DEVICE) \|
	216	OCRDMA_UVERBS(QUERY_PORT) \|
	217	OCRDMA_UVERBS(ALLOC_PD) \|
	218	OCRDMA_UVERBS(DEALLOC_PD) \|
	219	OCRDMA_UVERBS(REG_MR) \|
	220	OCRDMA_UVERBS(DEREG_MR) \|
	221	OCRDMA_UVERBS(CREATE_COMP_CHANNEL) \|
	222	OCRDMA_UVERBS(CREATE_CQ) \|
	223	OCRDMA_UVERBS(RESIZE_CQ) \|
	224	OCRDMA_UVERBS(DESTROY_CQ) \|
	225	OCRDMA_UVERBS(REQ_NOTIFY_CQ) \|
	226	OCRDMA_UVERBS(CREATE_QP) \|
	227	OCRDMA_UVERBS(MODIFY_QP) \|
	228	OCRDMA_UVERBS(QUERY_QP) \|
	229	OCRDMA_UVERBS(DESTROY_QP) \|
	230	OCRDMA_UVERBS(POLL_CQ) \|
	231	OCRDMA_UVERBS(POST_SEND) \|
	232	OCRDMA_UVERBS(POST_RECV);
	233
	234	dev->ibdev.uverbs_cmd_mask \|=
	235	OCRDMA_UVERBS(CREATE_AH) \|
	236	OCRDMA_UVERBS(MODIFY_AH) \|
	237	OCRDMA_UVERBS(QUERY_AH) \|
	238	OCRDMA_UVERBS(DESTROY_AH);
	239
	240	dev->ibdev.node_type = RDMA_NODE_IB_CA;
	241	dev->ibdev.phys_port_cnt = 1;
	242	dev->ibdev.num_comp_vectors = 1;
	243
	244	/* mandatory verbs. */
	245	dev->ibdev.query_device = ocrdma_query_device;
	246	dev->ibdev.query_port = ocrdma_query_port;
	247	dev->ibdev.modify_port = ocrdma_modify_port;
	248	dev->ibdev.query_gid = ocrdma_query_gid;
	249	dev->ibdev.get_link_layer = ocrdma_link_layer;
	250	dev->ibdev.alloc_pd = ocrdma_alloc_pd;
	251	dev->ibdev.dealloc_pd = ocrdma_dealloc_pd;
	252
	253	dev->ibdev.create_cq = ocrdma_create_cq;
	254	dev->ibdev.destroy_cq = ocrdma_destroy_cq;
	255	dev->ibdev.resize_cq = ocrdma_resize_cq;
	256
	257	dev->ibdev.create_qp = ocrdma_create_qp;
	258	dev->ibdev.modify_qp = ocrdma_modify_qp;
	259	dev->ibdev.query_qp = ocrdma_query_qp;
	260	dev->ibdev.destroy_qp = ocrdma_destroy_qp;
	261
	262	dev->ibdev.query_pkey = ocrdma_query_pkey;
	263	dev->ibdev.create_ah = ocrdma_create_ah;
	264	dev->ibdev.destroy_ah = ocrdma_destroy_ah;
	265	dev->ibdev.query_ah = ocrdma_query_ah;
	266	dev->ibdev.modify_ah = ocrdma_modify_ah;
	267
	268	dev->ibdev.poll_cq = ocrdma_poll_cq;
	269	dev->ibdev.post_send = ocrdma_post_send;
	270	dev->ibdev.post_recv = ocrdma_post_recv;
	271	dev->ibdev.req_notify_cq = ocrdma_arm_cq;
	272
	273	dev->ibdev.get_dma_mr = ocrdma_get_dma_mr;
cffce990	274	dev->ibdev.reg_phys_mr = ocrdma_reg_kernel_mr;
fe2caefc PP	275	dev->ibdev.dereg_mr = ocrdma_dereg_mr;
	276	dev->ibdev.reg_user_mr = ocrdma_reg_user_mr;
	277
7c33880c NG	278	dev->ibdev.alloc_fast_reg_mr = ocrdma_alloc_frmr;
	279	dev->ibdev.alloc_fast_reg_page_list = ocrdma_alloc_frmr_page_list;
	280	dev->ibdev.free_fast_reg_page_list = ocrdma_free_frmr_page_list;
	281
fe2caefc PP	282	/* mandatory to support user space verbs consumer. */
	283	dev->ibdev.alloc_ucontext = ocrdma_alloc_ucontext;
	284	dev->ibdev.dealloc_ucontext = ocrdma_dealloc_ucontext;
	285	dev->ibdev.mmap = ocrdma_mmap;
	286	dev->ibdev.dma_device = &dev->nic_info.pdev->dev;
	287
	288	dev->ibdev.process_mad = ocrdma_process_mad;
	289
21c3391a	290	if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
fe2caefc PP	291	dev->ibdev.uverbs_cmd_mask \|=
	292	OCRDMA_UVERBS(CREATE_SRQ) \|
	293	OCRDMA_UVERBS(MODIFY_SRQ) \|
	294	OCRDMA_UVERBS(QUERY_SRQ) \|
	295	OCRDMA_UVERBS(DESTROY_SRQ) \|
	296	OCRDMA_UVERBS(POST_SRQ_RECV);
	297
	298	dev->ibdev.create_srq = ocrdma_create_srq;
	299	dev->ibdev.modify_srq = ocrdma_modify_srq;
	300	dev->ibdev.query_srq = ocrdma_query_srq;
	301	dev->ibdev.destroy_srq = ocrdma_destroy_srq;
	302	dev->ibdev.post_srq_recv = ocrdma_post_srq_recv;
	303	}
	304	return ib_register_device(&dev->ibdev, NULL);
	305	}
	306
	307	static int ocrdma_alloc_resources(struct ocrdma_dev *dev)
	308	{
	309	mutex_init(&dev->dev_lock);
	310	dev->sgid_tbl = kzalloc(sizeof(union ib_gid) *
	311	OCRDMA_MAX_SGID, GFP_KERNEL);
	312	if (!dev->sgid_tbl)
	313	goto alloc_err;
	314	spin_lock_init(&dev->sgid_lock);
	315
	316	dev->cq_tbl = kzalloc(sizeof(struct ocrdma_cq )
	317	OCRDMA_MAX_CQ, GFP_KERNEL);
	318	if (!dev->cq_tbl)
	319	goto alloc_err;
	320
	321	if (dev->attr.max_qp) {
	322	dev->qp_tbl = kzalloc(sizeof(struct ocrdma_qp )
	323	OCRDMA_MAX_QP, GFP_KERNEL);
	324	if (!dev->qp_tbl)
	325	goto alloc_err;
	326	}
	327	spin_lock_init(&dev->av_tbl.lock);
	328	spin_lock_init(&dev->flush_q_lock);
	329	return 0;
	330	alloc_err:
ef99c4c2	331	pr_err("%s(%d) error.\n", __func__, dev->id);
fe2caefc PP	332	return -ENOMEM;
	333	}
	334
	335	static void ocrdma_free_resources(struct ocrdma_dev *dev)
	336	{
	337	kfree(dev->qp_tbl);
	338	kfree(dev->cq_tbl);
	339	kfree(dev->sgid_tbl);
	340	}
	341
334b8db3 SX	342	/* OCRDMA sysfs interface */
	343	static ssize_t show_rev(struct device device, struct device_attribute attr,
	344	char *buf)
	345	{
	346	struct ocrdma_dev *dev = dev_get_drvdata(device);
	347
	348	return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->nic_info.pdev->vendor);
	349	}
	350
	351	static ssize_t show_fw_ver(struct device device, struct device_attribute attr,
	352	char *buf)
	353	{
	354	struct ocrdma_dev *dev = dev_get_drvdata(device);
	355
4808b184 SX	356	return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->attr.fw_ver[0]);
	357	}
	358
	359	static ssize_t show_hca_type(struct device *device,
	360	struct device_attribute attr, char buf)
	361	{
	362	struct ocrdma_dev *dev = dev_get_drvdata(device);
	363
	364	return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->model_number[0]);
334b8db3 SX	365	}
	366
	367	static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
	368	static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
4808b184	369	static DEVICE_ATTR(hca_type, S_IRUGO, show_hca_type, NULL);
334b8db3 SX	370
	371	static struct device_attribute *ocrdma_attributes[] = {
	372	&dev_attr_hw_rev,
4808b184 SX	373	&dev_attr_fw_ver,
4808b184 SX	374	&dev_attr_hca_type
334b8db3 SX	375	};
	376
	377	static void ocrdma_remove_sysfiles(struct ocrdma_dev *dev)
	378	{
	379	int i;
	380
	381	for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++)
	382	device_remove_file(&dev->ibdev.dev, ocrdma_attributes[i]);
	383	}
	384
fe2caefc PP	385	static struct ocrdma_dev ocrdma_add(struct be_dev_info dev_info)
fe2caefc PP	386	{
334b8db3	387	int status = 0, i;
fe2caefc PP	388	struct ocrdma_dev *dev;
	389
	390	dev = (struct ocrdma_dev *)ib_alloc_device(sizeof(struct ocrdma_dev));
	391	if (!dev) {
ef99c4c2	392	pr_err("Unable to allocate ib device\n");
fe2caefc PP	393	return NULL;
	394	}
	395	dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL);
	396	if (!dev->mbx_cmd)
	397	goto idr_err;
	398
	399	memcpy(&dev->nic_info, dev_info, sizeof(*dev_info));
cffcd59f	400	dev->id = idr_alloc(&ocrdma_dev_id, NULL, 0, 0, GFP_KERNEL);
fe2caefc PP	401	if (dev->id < 0)
	402	goto idr_err;
	403
	404	status = ocrdma_init_hw(dev);
	405	if (status)
	406	goto init_err;
	407
	408	status = ocrdma_alloc_resources(dev);
	409	if (status)
	410	goto alloc_err;
	411
31dbdd9a	412	ocrdma_init_service_level(dev);
fe2caefc PP	413	status = ocrdma_register_device(dev);
	414	if (status)
	415	goto alloc_err;
	416
334b8db3 SX	417	for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++)
	418	if (device_create_file(&dev->ibdev.dev, ocrdma_attributes[i]))
	419	goto sysfs_err;
3e4d60a8 SL	420	spin_lock(&ocrdma_devlist_lock);
	421	list_add_tail_rcu(&dev->entry, &ocrdma_dev_list);
	422	spin_unlock(&ocrdma_devlist_lock);
a51f06e1 SX	423	/* Init stats */
	424	ocrdma_add_port_stats(dev);
	425
	426	pr_info("%s %s: %s \"%s\" port %d\n",
	427	dev_name(&dev->nic_info.pdev->dev), hca_name(dev),
	428	port_speed_string(dev), dev->model_number,
	429	dev->hba_port_num);
	430	pr_info("%s ocrdma%d driver loaded successfully\n",
	431	dev_name(&dev->nic_info.pdev->dev), dev->id);
fe2caefc PP	432	return dev;
fe2caefc PP	433
334b8db3 SX	434	sysfs_err:
334b8db3 SX	435	ocrdma_remove_sysfiles(dev);
fe2caefc PP	436	alloc_err:
	437	ocrdma_free_resources(dev);
	438	ocrdma_cleanup_hw(dev);
	439	init_err:
	440	idr_remove(&ocrdma_dev_id, dev->id);
	441	idr_err:
	442	kfree(dev->mbx_cmd);
	443	ib_dealloc_device(&dev->ibdev);
ef99c4c2	444	pr_err("%s() leaving. ret=%d\n", __func__, status);
fe2caefc PP	445	return NULL;
	446	}
	447
3e4d60a8	448	static void ocrdma_remove_free(struct rcu_head *rcu)
fe2caefc	449	{
3e4d60a8	450	struct ocrdma_dev *dev = container_of(rcu, struct ocrdma_dev, rcu);
fe2caefc	451
fe2caefc PP	452	idr_remove(&ocrdma_dev_id, dev->id);
	453	kfree(dev->mbx_cmd);
	454	ib_dealloc_device(&dev->ibdev);
	455	}
	456
3e4d60a8 SL	457	static void ocrdma_remove(struct ocrdma_dev *dev)
	458	{
	459	/* first unregister with stack to stop all the active traffic
	460	* of the registered clients.
	461	*/
a51f06e1	462	ocrdma_rem_port_stats(dev);
334b8db3 SX	463	ocrdma_remove_sysfiles(dev);
334b8db3 SX	464
3e4d60a8 SL	465	ib_unregister_device(&dev->ibdev);
	466
	467	spin_lock(&ocrdma_devlist_lock);
	468	list_del_rcu(&dev->entry);
	469	spin_unlock(&ocrdma_devlist_lock);
1852d1da NG	470
	471	ocrdma_free_resources(dev);
	472	ocrdma_cleanup_hw(dev);
	473
3e4d60a8 SL	474	call_rcu(&dev->rcu, ocrdma_remove_free);
	475	}
	476
fe2caefc PP	477	static int ocrdma_open(struct ocrdma_dev *dev)
	478	{
	479	struct ib_event port_event;
	480
	481	port_event.event = IB_EVENT_PORT_ACTIVE;
	482	port_event.element.port_num = 1;
	483	port_event.device = &dev->ibdev;
	484	ib_dispatch_event(&port_event);
	485	return 0;
	486	}
	487
	488	static int ocrdma_close(struct ocrdma_dev *dev)
	489	{
	490	int i;
	491	struct ocrdma_qp qp, *cur_qp;
	492	struct ib_event err_event;
	493	struct ib_qp_attr attrs;
	494	int attr_mask = IB_QP_STATE;
	495
	496	attrs.qp_state = IB_QPS_ERR;
	497	mutex_lock(&dev->dev_lock);
	498	if (dev->qp_tbl) {
	499	cur_qp = dev->qp_tbl;
	500	for (i = 0; i < OCRDMA_MAX_QP; i++) {
	501	qp = cur_qp[i];
fad51b7d	502	if (qp && qp->ibqp.qp_type != IB_QPT_GSI) {
fe2caefc PP	503	/* change the QP state to ERROR */
	504	_ocrdma_modify_qp(&qp->ibqp, &attrs, attr_mask);
	505
	506	err_event.event = IB_EVENT_QP_FATAL;
	507	err_event.element.qp = &qp->ibqp;
	508	err_event.device = &dev->ibdev;
	509	ib_dispatch_event(&err_event);
	510	}
	511	}
	512	}
	513	mutex_unlock(&dev->dev_lock);
	514
	515	err_event.event = IB_EVENT_PORT_ERR;
	516	err_event.element.port_num = 1;
	517	err_event.device = &dev->ibdev;
	518	ib_dispatch_event(&err_event);
	519	return 0;
	520	}
	521
	522	/* event handling via NIC driver ensures that all the NIC specific
	523	* initialization done before RoCE driver notifies
	524	* event to stack.
	525	*/
	526	static void ocrdma_event_handler(struct ocrdma_dev *dev, u32 event)
	527	{
	528	switch (event) {
	529	case BE_DEV_UP:
	530	ocrdma_open(dev);
	531	break;
	532	case BE_DEV_DOWN:
	533	ocrdma_close(dev);
	534	break;
2b50176d	535	}
fe2caefc PP	536	}
fe2caefc PP	537
abe3afac	538	static struct ocrdma_driver ocrdma_drv = {
fe2caefc PP	539	.name = "ocrdma_driver",
	540	.add = ocrdma_add,
	541	.remove = ocrdma_remove,
	542	.state_change_handler = ocrdma_event_handler,
b6b87d2e	543	.be_abi_version = OCRDMA_BE_ROCE_ABI_VERSION,
fe2caefc PP	544	};
fe2caefc PP	545
34955669 RD	546	static void ocrdma_unregister_inet6addr_notifier(void)
34955669 RD	547	{
d90f9b35	548	#if IS_ENABLED(CONFIG_IPV6)
34955669 RD	549	unregister_inet6addr_notifier(&ocrdma_inet6addr_notifier);
	550	#endif
	551	}
	552
2d8f57d5 SX	553	static void ocrdma_unregister_inetaddr_notifier(void)
	554	{
	555	unregister_inetaddr_notifier(&ocrdma_inetaddr_notifier);
	556	}
	557
fe2caefc PP	558	static int __init ocrdma_init_module(void)
	559	{
	560	int status;
	561
a51f06e1 SX	562	ocrdma_init_debugfs();
a51f06e1 SX	563
37721d85 MS	564	status = register_inetaddr_notifier(&ocrdma_inetaddr_notifier);
	565	if (status)
	566	return status;
	567
d90f9b35	568	#if IS_ENABLED(CONFIG_IPV6)
fe2caefc PP	569	status = register_inet6addr_notifier(&ocrdma_inet6addr_notifier);
fe2caefc PP	570	if (status)
2d8f57d5	571	goto err_notifier6;
34955669 RD	572	#endif
34955669 RD	573
fe2caefc PP	574	status = be_roce_register_driver(&ocrdma_drv);
fe2caefc PP	575	if (status)
2d8f57d5	576	goto err_be_reg;
34955669	577
2d8f57d5 SX	578	return 0;
	579
	580	err_be_reg:
	581	ocrdma_unregister_inet6addr_notifier();
	582	err_notifier6:
	583	ocrdma_unregister_inetaddr_notifier();
fe2caefc PP	584	return status;
	585	}
	586
	587	static void __exit ocrdma_exit_module(void)
	588	{
	589	be_roce_unregister_driver(&ocrdma_drv);
34955669	590	ocrdma_unregister_inet6addr_notifier();
2d8f57d5	591	ocrdma_unregister_inetaddr_notifier();
a51f06e1	592	ocrdma_rem_debugfs();
fe2caefc PP	593	}
	594
	595	module_init(ocrdma_init_module);
	596	module_exit(ocrdma_exit_module);