[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx4 / en_main.c

/*
 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#include <linux/cpumask.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/slab.h>

#include <linux/mlx4/driver.h>
#include <linux/mlx4/device.h>
#include <linux/mlx4/cmd.h>

#include "mlx4_en.h"

MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin");
MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION " ("DRV_RELDATE")");

static const char mlx4_en_version[] =
	DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
	DRV_VERSION " (" DRV_RELDATE ")\n";

#define MLX4_EN_PARM_INT(X, def_val, desc) \
	static unsigned int X = def_val;\
	module_param(X , uint, 0444); \
	MODULE_PARM_DESC(X, desc);


/*
 * Device scope module parameters
 */

/* Enable RSS UDP traffic */
MLX4_EN_PARM_INT(udp_rss, 1,
		 "Enable RSS for incomming UDP traffic or disabled (0)");

/* Priority pausing */
MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
			   " Per priority bit mask");
MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
			   " Per priority bit mask");

int en_print(const char *level, const struct mlx4_en_priv *priv,
	     const char *format, ...)
{
	va_list args;
	struct va_format vaf;
	int i;

	va_start(args, format);

	vaf.fmt = format;
	vaf.va = &args;
	if (priv->registered)
		i = printk("%s%s: %s: %pV",
			   level, DRV_NAME, priv->dev->name, &vaf);
	else
		i = printk("%s%s: %s: Port %d: %pV",
			   level, DRV_NAME, dev_name(&priv->mdev->pdev->dev),
			   priv->port, &vaf);
	va_end(args);

	return i;
}

static int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
{
	struct mlx4_en_profile *params = &mdev->profile;
	int i;

	params->udp_rss = udp_rss;
	params->num_tx_rings_p_up = min_t(int, num_online_cpus(),
			MLX4_EN_MAX_TX_RING_P_UP);
	if (params->udp_rss && !(mdev->dev->caps.flags
					& MLX4_DEV_CAP_FLAG_UDP_RSS)) {
		mlx4_warn(mdev, "UDP RSS is not supported on this device.\n");
		params->udp_rss = 0;
	}
	for (i = 1; i <= MLX4_MAX_PORTS; i++) {
		params->prof[i].rx_pause = 1;
		params->prof[i].rx_ppp = pfcrx;
		params->prof[i].tx_pause = 1;
		params->prof[i].tx_ppp = pfctx;
		params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
		params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
		params->prof[i].tx_ring_num = params->num_tx_rings_p_up *
			MLX4_EN_NUM_UP;
		params->prof[i].rss_rings = 0;
	}

	return 0;
}

static void *mlx4_en_get_netdev(struct mlx4_dev *dev, void *ctx, u8 port)
{
	struct mlx4_en_dev *endev = ctx;

	return endev->pndev[port];
}

static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr,
			  enum mlx4_dev_event event, int port)
{
	struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr;
	struct mlx4_en_priv *priv;

	if (!mdev->pndev[port])
		return;

	priv = netdev_priv(mdev->pndev[port]);
	switch (event) {
	case MLX4_DEV_EVENT_PORT_UP:
	case MLX4_DEV_EVENT_PORT_DOWN:
		/* To prevent races, we poll the link state in a separate
		  task rather than changing it here */
		priv->link_state = event;
		queue_work(mdev->workqueue, &priv->linkstate_task);
		break;

	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
		mlx4_err(mdev, "Internal error detected, restarting device\n");
		break;

	default:
		mlx4_warn(mdev, "Unhandled event: %d\n", event);
	}
}

static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr)
{
	struct mlx4_en_dev *mdev = endev_ptr;
	int i;

	mutex_lock(&mdev->state_lock);
	mdev->device_up = false;
	mutex_unlock(&mdev->state_lock);

	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
		if (mdev->pndev[i])
			mlx4_en_destroy_netdev(mdev->pndev[i]);

	flush_workqueue(mdev->workqueue);
	destroy_workqueue(mdev->workqueue);
	mlx4_mr_free(dev, &mdev->mr);
	iounmap(mdev->uar_map);
	mlx4_uar_free(dev, &mdev->priv_uar);
	mlx4_pd_free(dev, mdev->priv_pdn);
	kfree(mdev);
}

static void *mlx4_en_add(struct mlx4_dev *dev)
{
	struct mlx4_en_dev *mdev;
	int i;
	int err;

	printk_once(KERN_INFO "%s", mlx4_en_version);

	mdev = kzalloc(sizeof *mdev, GFP_KERNEL);
	if (!mdev) {
		dev_err(&dev->pdev->dev, "Device struct alloc failed, "
			"aborting.\n");
		err = -ENOMEM;
		goto err_free_res;
	}

	if (mlx4_pd_alloc(dev, &mdev->priv_pdn))
		goto err_free_dev;

	if (mlx4_uar_alloc(dev, &mdev->priv_uar))
		goto err_pd;

	mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT,
				PAGE_SIZE);
	if (!mdev->uar_map)
		goto err_uar;
	spin_lock_init(&mdev->uar_lock);

	mdev->dev = dev;
	mdev->dma_device = &(dev->pdev->dev);
	mdev->pdev = dev->pdev;
	mdev->device_up = false;

	mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
	if (!mdev->LSO_support)
		mlx4_warn(mdev, "LSO not supported, please upgrade to later "
				"FW version to enable LSO\n");

	if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
			 MLX4_PERM_LOCAL_WRITE |  MLX4_PERM_LOCAL_READ,
			 0, 0, &mdev->mr)) {
		mlx4_err(mdev, "Failed allocating memory region\n");
		goto err_map;
	}
	if (mlx4_mr_enable(mdev->dev, &mdev->mr)) {
		mlx4_err(mdev, "Failed enabling memory region\n");
		goto err_mr;
	}

	/* Build device profile according to supplied module parameters */
	err = mlx4_en_get_profile(mdev);
	if (err) {
		mlx4_err(mdev, "Bad module parameters, aborting.\n");
		goto err_mr;
	}

	/* Configure which ports to start according to module parameters */
	mdev->port_cnt = 0;
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
		mdev->port_cnt++;

	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
		if (!dev->caps.comp_pool) {
			mdev->profile.prof[i].rx_ring_num =
				rounddown_pow_of_two(max_t(int, MIN_RX_RINGS,
							   min_t(int,
								 dev->caps.num_comp_vectors,
								 MAX_RX_RINGS)));
		} else {
			mdev->profile.prof[i].rx_ring_num = rounddown_pow_of_two(
				min_t(int, dev->caps.comp_pool/
				      dev->caps.num_ports - 1 , MAX_MSIX_P_PORT - 1));
		}
	}

	/* Create our own workqueue for reset/multicast tasks
	 * Note: we cannot use the shared workqueue because of deadlocks caused
	 *       by the rtnl lock */
	mdev->workqueue = create_singlethread_workqueue("mlx4_en");
	if (!mdev->workqueue) {
		err = -ENOMEM;
		goto err_mr;
	}

	/* At this stage all non-port specific tasks are complete:
	 * mark the card state as up */
	mutex_init(&mdev->state_lock);
	mdev->device_up = true;

	/* Setup ports */

	/* Create a netdev for each port */
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
		mlx4_info(mdev, "Activating port:%d\n", i);
		if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i]))
			mdev->pndev[i] = NULL;
	}
	return mdev;

err_mr:
	mlx4_mr_free(dev, &mdev->mr);
err_map:
	if (!mdev->uar_map)
		iounmap(mdev->uar_map);
err_uar:
	mlx4_uar_free(dev, &mdev->priv_uar);
err_pd:
	mlx4_pd_free(dev, mdev->priv_pdn);
err_free_dev:
	kfree(mdev);
err_free_res:
	return NULL;
}

static struct mlx4_interface mlx4_en_interface = {
	.add		= mlx4_en_add,
	.remove		= mlx4_en_remove,
	.event		= mlx4_en_event,
	.get_dev	= mlx4_en_get_netdev,
	.protocol	= MLX4_PROT_ETH,
};

static int __init mlx4_en_init(void)
{
	return mlx4_register_interface(&mlx4_en_interface);
}

static void __exit mlx4_en_cleanup(void)
{
	mlx4_unregister_interface(&mlx4_en_interface);
}

module_init(mlx4_en_init);
module_exit(mlx4_en_cleanup);
Commit	Line	Data
c27a02cd YP	1	/*
	2	* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*
	32	*/
	33
	34	#include <linux/cpumask.h>
	35	#include <linux/module.h>
	36	#include <linux/delay.h>
	37	#include <linux/netdevice.h>
5a0e3ad6	38	#include <linux/slab.h>
c27a02cd YP	39
	40	#include <linux/mlx4/driver.h>
	41	#include <linux/mlx4/device.h>
	42	#include <linux/mlx4/cmd.h>
	43
	44	#include "mlx4_en.h"
	45
	46	MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin");
	47	MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver");
	48	MODULE_LICENSE("Dual BSD/GPL");
	49	MODULE_VERSION(DRV_VERSION " ("DRV_RELDATE")");
	50
	51	static const char mlx4_en_version[] =
	52	DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
	53	DRV_VERSION " (" DRV_RELDATE ")\n";
	54
a2b28737 YP	55	#define MLX4_EN_PARM_INT(X, def_val, desc) \
	56	static unsigned int X = def_val;\
	57	module_param(X , uint, 0444); \
	58	MODULE_PARM_DESC(X, desc);
	59
	60
	61	/*
	62	* Device scope module parameters
	63	*/
	64
0533943c YP	65	/* Enable RSS UDP traffic */
	66	MLX4_EN_PARM_INT(udp_rss, 1,
	67	"Enable RSS for incomming UDP traffic or disabled (0)");
a2b28737	68
a2b28737 YP	69	/* Priority pausing */
	70	MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
	71	" Per priority bit mask");
	72	MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
	73	" Per priority bit mask");
	74
0a645e80 JP	75	int en_print(const char level, const struct mlx4_en_priv priv,
	76	const char *format, ...)
	77	{
	78	va_list args;
	79	struct va_format vaf;
	80	int i;
	81
	82	va_start(args, format);
	83
	84	vaf.fmt = format;
	85	vaf.va = &args;
	86	if (priv->registered)
	87	i = printk("%s%s: %s: %pV",
	88	level, DRV_NAME, priv->dev->name, &vaf);
	89	else
	90	i = printk("%s%s: %s: Port %d: %pV",
	91	level, DRV_NAME, dev_name(&priv->mdev->pdev->dev),
	92	priv->port, &vaf);
	93	va_end(args);
	94
	95	return i;
	96	}
	97
a2b28737 YP	98	static int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
	99	{
	100	struct mlx4_en_profile *params = &mdev->profile;
	101	int i;
	102
0533943c	103	params->udp_rss = udp_rss;
bc6a4744 AV	104	params->num_tx_rings_p_up = min_t(int, num_online_cpus(),
bc6a4744 AV	105	MLX4_EN_MAX_TX_RING_P_UP);
ccf86321 OG	106	if (params->udp_rss && !(mdev->dev->caps.flags
ccf86321 OG	107	& MLX4_DEV_CAP_FLAG_UDP_RSS)) {
0533943c YP	108	mlx4_warn(mdev, "UDP RSS is not supported on this device.\n");
	109	params->udp_rss = 0;
	110	}
a2b28737 YP	111	for (i = 1; i <= MLX4_MAX_PORTS; i++) {
	112	params->prof[i].rx_pause = 1;
	113	params->prof[i].rx_ppp = pfcrx;
	114	params->prof[i].tx_pause = 1;
	115	params->prof[i].tx_ppp = pfctx;
	116	params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
	117	params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
bc6a4744 AV	118	params->prof[i].tx_ring_num = params->num_tx_rings_p_up *
bc6a4744 AV	119	MLX4_EN_NUM_UP;
93d3e367	120	params->prof[i].rss_rings = 0;
a2b28737 YP	121	}
	122
	123	return 0;
	124	}
	125
33c87f0a EC	126	static void mlx4_en_get_netdev(struct mlx4_dev dev, void *ctx, u8 port)
	127	{
	128	struct mlx4_en_dev *endev = ctx;
	129
	130	return endev->pndev[port];
	131	}
	132
c27a02cd YP	133	static void mlx4_en_event(struct mlx4_dev dev, void endev_ptr,
	134	enum mlx4_dev_event event, int port)
	135	{
	136	struct mlx4_en_dev mdev = (struct mlx4_en_dev ) endev_ptr;
	137	struct mlx4_en_priv *priv;
	138
	139	if (!mdev->pndev[port])
	140	return;
	141
	142	priv = netdev_priv(mdev->pndev[port]);
	143	switch (event) {
	144	case MLX4_DEV_EVENT_PORT_UP:
	145	case MLX4_DEV_EVENT_PORT_DOWN:
	146	/* To prevent races, we poll the link state in a separate
	147	task rather than changing it here */
	148	priv->link_state = event;
	149	queue_work(mdev->workqueue, &priv->linkstate_task);
	150	break;
	151
	152	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
	153	mlx4_err(mdev, "Internal error detected, restarting device\n");
	154	break;
	155
	156	default:
	157	mlx4_warn(mdev, "Unhandled event: %d\n", event);
	158	}
	159	}
	160
	161	static void mlx4_en_remove(struct mlx4_dev dev, void endev_ptr)
	162	{
	163	struct mlx4_en_dev *mdev = endev_ptr;
	164	int i;
	165
	166	mutex_lock(&mdev->state_lock);
	167	mdev->device_up = false;
	168	mutex_unlock(&mdev->state_lock);
	169
	170	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
	171	if (mdev->pndev[i])
	172	mlx4_en_destroy_netdev(mdev->pndev[i]);
	173
	174	flush_workqueue(mdev->workqueue);
	175	destroy_workqueue(mdev->workqueue);
	176	mlx4_mr_free(dev, &mdev->mr);
7398af40	177	iounmap(mdev->uar_map);
c27a02cd YP	178	mlx4_uar_free(dev, &mdev->priv_uar);
	179	mlx4_pd_free(dev, mdev->priv_pdn);
	180	kfree(mdev);
	181	}
	182
	183	static void mlx4_en_add(struct mlx4_dev dev)
	184	{
c27a02cd YP	185	struct mlx4_en_dev *mdev;
	186	int i;
	187	int err;
	188
0a645e80	189	printk_once(KERN_INFO "%s", mlx4_en_version);
c27a02cd YP	190
	191	mdev = kzalloc(sizeof *mdev, GFP_KERNEL);
	192	if (!mdev) {
	193	dev_err(&dev->pdev->dev, "Device struct alloc failed, "
	194	"aborting.\n");
	195	err = -ENOMEM;
	196	goto err_free_res;
	197	}
	198
	199	if (mlx4_pd_alloc(dev, &mdev->priv_pdn))
	200	goto err_free_dev;
	201
	202	if (mlx4_uar_alloc(dev, &mdev->priv_uar))
	203	goto err_pd;
	204
4979d18f RD	205	mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT,
4979d18f RD	206	PAGE_SIZE);
c27a02cd YP	207	if (!mdev->uar_map)
	208	goto err_uar;
	209	spin_lock_init(&mdev->uar_lock);
	210
	211	mdev->dev = dev;
	212	mdev->dma_device = &(dev->pdev->dev);
	213	mdev->pdev = dev->pdev;
	214	mdev->device_up = false;
	215
	216	mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
	217	if (!mdev->LSO_support)
	218	mlx4_warn(mdev, "LSO not supported, please upgrade to later "
	219	"FW version to enable LSO\n");
	220
	221	if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
	222	MLX4_PERM_LOCAL_WRITE \| MLX4_PERM_LOCAL_READ,
	223	0, 0, &mdev->mr)) {
	224	mlx4_err(mdev, "Failed allocating memory region\n");
7398af40	225	goto err_map;
c27a02cd YP	226	}
	227	if (mlx4_mr_enable(mdev->dev, &mdev->mr)) {
	228	mlx4_err(mdev, "Failed enabling memory region\n");
	229	goto err_mr;
	230	}
	231
	232	/* Build device profile according to supplied module parameters */
	233	err = mlx4_en_get_profile(mdev);
	234	if (err) {
	235	mlx4_err(mdev, "Bad module parameters, aborting.\n");
	236	goto err_mr;
	237	}
	238
25985edc	239	/* Configure which ports to start according to module parameters */
c27a02cd YP	240	mdev->port_cnt = 0;
	241	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
	242	mdev->port_cnt++;
	243
c27a02cd	244	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
1fb9876e YP	245	if (!dev->caps.comp_pool) {
	246	mdev->profile.prof[i].rx_ring_num =
	247	rounddown_pow_of_two(max_t(int, MIN_RX_RINGS,
	248	min_t(int,
	249	dev->caps.num_comp_vectors,
	250	MAX_RX_RINGS)));
	251	} else {
	252	mdev->profile.prof[i].rx_ring_num = rounddown_pow_of_two(
	253	min_t(int, dev->caps.comp_pool/
	254	dev->caps.num_ports - 1 , MAX_MSIX_P_PORT - 1));
	255	}
c27a02cd YP	256	}
	257
	258	/* Create our own workqueue for reset/multicast tasks
	259	* Note: we cannot use the shared workqueue because of deadlocks caused
	260	* by the rtnl lock */
	261	mdev->workqueue = create_singlethread_workqueue("mlx4_en");
	262	if (!mdev->workqueue) {
	263	err = -ENOMEM;
1a44cc37	264	goto err_mr;
c27a02cd YP	265	}
	266
	267	/* At this stage all non-port specific tasks are complete:
	268	* mark the card state as up */
	269	mutex_init(&mdev->state_lock);
	270	mdev->device_up = true;
	271
	272	/* Setup ports */
	273
	274	/* Create a netdev for each port */
	275	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
	276	mlx4_info(mdev, "Activating port:%d\n", i);
3c2fa83f	277	if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i]))
c27a02cd	278	mdev->pndev[i] = NULL;
c27a02cd YP	279	}
	280	return mdev;
	281
c27a02cd YP	282	err_mr:
c27a02cd YP	283	mlx4_mr_free(dev, &mdev->mr);
7398af40 AG	284	err_map:
	285	if (!mdev->uar_map)
	286	iounmap(mdev->uar_map);
c27a02cd YP	287	err_uar:
	288	mlx4_uar_free(dev, &mdev->priv_uar);
	289	err_pd:
	290	mlx4_pd_free(dev, mdev->priv_pdn);
	291	err_free_dev:
	292	kfree(mdev);
	293	err_free_res:
	294	return NULL;
	295	}
	296
	297	static struct mlx4_interface mlx4_en_interface = {
33c87f0a EC	298	.add = mlx4_en_add,
	299	.remove = mlx4_en_remove,
	300	.event = mlx4_en_event,
	301	.get_dev = mlx4_en_get_netdev,
0345584e	302	.protocol = MLX4_PROT_ETH,
c27a02cd YP	303	};
	304
	305	static int __init mlx4_en_init(void)
	306	{
	307	return mlx4_register_interface(&mlx4_en_interface);
	308	}
	309
	310	static void __exit mlx4_en_cleanup(void)
	311	{
	312	mlx4_unregister_interface(&mlx4_en_interface);
	313	}
	314
	315	module_init(mlx4_en_init);
	316	module_exit(mlx4_en_cleanup);
	317