Commit 955dc68c authored by Samuel Mendoza-Jonas's avatar Samuel Mendoza-Jonas Committed by David S. Miller
Browse files

net/ncsi: Add generic netlink family 



Add a generic netlink family for NCSI. This supports three commands;
NCSI_CMD_PKG_INFO which returns information on packages and their
associated channels, NCSI_CMD_SET_INTERFACE which allows a specific
package or package/channel combination to be set as the preferred
choice, and NCSI_CMD_CLEAR_INTERFACE which clears any preferred setting.

Signed-off-by: default avatarSamuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent be631892

include/uapi/linux/ncsi.h

0 → 100644
+115 −0
Original line number Diff line number Diff line 
/*

 * Copyright Samuel Mendoza-Jonas, IBM Corporation 2018.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */



#ifndef __UAPI_NCSI_NETLINK_H__

#define __UAPI_NCSI_NETLINK_H__



/**

 * enum ncsi_nl_commands - supported NCSI commands

 *

 * @NCSI_CMD_UNSPEC: unspecified command to catch errors

 * @NCSI_CMD_PKG_INFO: list package and channel attributes. Requires

 *	NCSI_ATTR_IFINDEX. If NCSI_ATTR_PACKAGE_ID is specified returns the

 *	specific package and its channels - otherwise a dump request returns

 *	all packages and their associated channels.

 * @NCSI_CMD_SET_INTERFACE: set preferred package and channel combination.

 *	Requires NCSI_ATTR_IFINDEX and the preferred NCSI_ATTR_PACKAGE_ID and

 *	optionally the preferred NCSI_ATTR_CHANNEL_ID.

 * @NCSI_CMD_CLEAR_INTERFACE: clear any preferred package/channel combination.

 *	Requires NCSI_ATTR_IFINDEX.

 * @NCSI_CMD_MAX: highest command number

 */

enum ncsi_nl_commands {

	NCSI_CMD_UNSPEC,

	NCSI_CMD_PKG_INFO,

	NCSI_CMD_SET_INTERFACE,

	NCSI_CMD_CLEAR_INTERFACE,



	__NCSI_CMD_AFTER_LAST,

	NCSI_CMD_MAX = __NCSI_CMD_AFTER_LAST - 1

};



/**

 * enum ncsi_nl_attrs - General NCSI netlink attributes

 *

 * @NCSI_ATTR_UNSPEC: unspecified attributes to catch errors

 * @NCSI_ATTR_IFINDEX: ifindex of network device using NCSI

 * @NCSI_ATTR_PACKAGE_LIST: nested array of NCSI_PKG_ATTR attributes

 * @NCSI_ATTR_PACKAGE_ID: package ID

 * @NCSI_ATTR_CHANNEL_ID: channel ID

 * @NCSI_ATTR_MAX: highest attribute number

 */

enum ncsi_nl_attrs {

	NCSI_ATTR_UNSPEC,

	NCSI_ATTR_IFINDEX,

	NCSI_ATTR_PACKAGE_LIST,

	NCSI_ATTR_PACKAGE_ID,

	NCSI_ATTR_CHANNEL_ID,



	__NCSI_ATTR_AFTER_LAST,

	NCSI_ATTR_MAX = __NCSI_ATTR_AFTER_LAST - 1

};



/**

 * enum ncsi_nl_pkg_attrs - NCSI netlink package-specific attributes

 *

 * @NCSI_PKG_ATTR_UNSPEC: unspecified attributes to catch errors

 * @NCSI_PKG_ATTR: nested array of package attributes

 * @NCSI_PKG_ATTR_ID: package ID

 * @NCSI_PKG_ATTR_FORCED: flag signifying a package has been set as preferred

 * @NCSI_PKG_ATTR_CHANNEL_LIST: nested array of NCSI_CHANNEL_ATTR attributes

 * @NCSI_PKG_ATTR_MAX: highest attribute number

 */

enum ncsi_nl_pkg_attrs {

	NCSI_PKG_ATTR_UNSPEC,

	NCSI_PKG_ATTR,

	NCSI_PKG_ATTR_ID,

	NCSI_PKG_ATTR_FORCED,

	NCSI_PKG_ATTR_CHANNEL_LIST,



	__NCSI_PKG_ATTR_AFTER_LAST,

	NCSI_PKG_ATTR_MAX = __NCSI_PKG_ATTR_AFTER_LAST - 1

};



/**

 * enum ncsi_nl_channel_attrs - NCSI netlink channel-specific attributes

 *

 * @NCSI_CHANNEL_ATTR_UNSPEC: unspecified attributes to catch errors

 * @NCSI_CHANNEL_ATTR: nested array of channel attributes

 * @NCSI_CHANNEL_ATTR_ID: channel ID

 * @NCSI_CHANNEL_ATTR_VERSION_MAJOR: channel major version number

 * @NCSI_CHANNEL_ATTR_VERSION_MINOR: channel minor version number

 * @NCSI_CHANNEL_ATTR_VERSION_STR: channel version string

 * @NCSI_CHANNEL_ATTR_LINK_STATE: channel link state flags

 * @NCSI_CHANNEL_ATTR_ACTIVE: channels with this flag are in

 *	NCSI_CHANNEL_ACTIVE state

 * @NCSI_CHANNEL_ATTR_FORCED: flag signifying a channel has been set as

 *	preferred

 * @NCSI_CHANNEL_ATTR_VLAN_LIST: nested array of NCSI_CHANNEL_ATTR_VLAN_IDs

 * @NCSI_CHANNEL_ATTR_VLAN_ID: VLAN ID being filtered on this channel

 * @NCSI_CHANNEL_ATTR_MAX: highest attribute number

 */

enum ncsi_nl_channel_attrs {

	NCSI_CHANNEL_ATTR_UNSPEC,

	NCSI_CHANNEL_ATTR,

	NCSI_CHANNEL_ATTR_ID,

	NCSI_CHANNEL_ATTR_VERSION_MAJOR,

	NCSI_CHANNEL_ATTR_VERSION_MINOR,

	NCSI_CHANNEL_ATTR_VERSION_STR,

	NCSI_CHANNEL_ATTR_LINK_STATE,

	NCSI_CHANNEL_ATTR_ACTIVE,

	NCSI_CHANNEL_ATTR_FORCED,

	NCSI_CHANNEL_ATTR_VLAN_LIST,

	NCSI_CHANNEL_ATTR_VLAN_ID,



	__NCSI_CHANNEL_ATTR_AFTER_LAST,

	NCSI_CHANNEL_ATTR_MAX = __NCSI_CHANNEL_ATTR_AFTER_LAST - 1

};



#endif /* __UAPI_NCSI_NETLINK_H__ */

net/ncsi/Makefile

+1 −1
Original line number Diff line number Diff line 
#

# Makefile for NCSI API

#

obj-$(CONFIG_NET_NCSI) += ncsi-cmd.o ncsi-rsp.o ncsi-aen.o ncsi-manage.o
 
obj-$(CONFIG_NET_NCSI) += ncsi-cmd.o ncsi-rsp.o ncsi-aen.o ncsi-manage.o ncsi-netlink.o

net/ncsi/internal.h

+3 −0
Original line number Diff line number Diff line
@@ -276,6 +276,8 @@ struct ncsi_dev_priv { 
	unsigned int        package_num;     /* Number of packages         */

	struct list_head    packages;        /* List of packages           */

	struct ncsi_channel *hot_channel;    /* Channel was ever active    */

	struct ncsi_package *force_package;  /* Force a specific package   */

	struct ncsi_channel *force_channel;  /* Force a specific channel   */

	struct ncsi_request requests[256];   /* Request table              */

	unsigned int        request_id;      /* Last used request ID       */

#define NCSI_REQ_START_IDX	1
@@ -318,6 +320,7 @@ extern spinlock_t ncsi_dev_lock; 
	list_for_each_entry_rcu(nc, &np->channels, node)



/* Resources */

u32 *ncsi_get_filter(struct ncsi_channel *nc, int table, int index);

int ncsi_find_filter(struct ncsi_channel *nc, int table, void *data);

int ncsi_add_filter(struct ncsi_channel *nc, int table, void *data);

int ncsi_remove_filter(struct ncsi_channel *nc, int table, int index);

net/ncsi/ncsi-manage.c

+26 −4
Original line number Diff line number Diff line
@@ -12,7 +12,6 @@ 
#include <linux/init.h>

#include <linux/netdevice.h>

#include <linux/skbuff.h>

#include <linux/netlink.h>



#include <net/ncsi.h>

#include <net/net_namespace.h>
@@ -23,6 +22,7 @@ 


#include "internal.h"

#include "ncsi-pkt.h"

#include "ncsi-netlink.h"



LIST_HEAD(ncsi_dev_list);

DEFINE_SPINLOCK(ncsi_dev_lock);
@@ -38,7 +38,7 @@ static inline int ncsi_filter_size(int table) 
	return sizes[table];

}



static u32 *ncsi_get_filter(struct ncsi_channel *nc, int table, int index)

u32 *ncsi_get_filter(struct ncsi_channel *nc, int table, int index)

{

	struct ncsi_channel_filter *ncf;

	int size;
@@ -965,20 +965,37 @@ error: 


static int ncsi_choose_active_channel(struct ncsi_dev_priv *ndp)

{

	struct ncsi_package *np;

	struct ncsi_channel *nc, *found, *hot_nc;

	struct ncsi_package *np, *force_package;

	struct ncsi_channel *nc, *found, *hot_nc, *force_channel;

	struct ncsi_channel_mode *ncm;

	unsigned long flags;



	spin_lock_irqsave(&ndp->lock, flags);

	hot_nc = ndp->hot_channel;

	force_channel = ndp->force_channel;

	force_package = ndp->force_package;

	spin_unlock_irqrestore(&ndp->lock, flags);



	/* Force a specific channel whether or not it has link if we have been

	 * configured to do so

	 */

	if (force_package && force_channel) {

		found = force_channel;

		ncm = &found->modes[NCSI_MODE_LINK];

		if (!(ncm->data[2] & 0x1))

			netdev_info(ndp->ndev.dev,

				    "NCSI: Channel %u forced, but it is link down\n",

				    found->id);

		goto out;

	}



	/* The search is done once an inactive channel with up

	 * link is found.

	 */

	found = NULL;

	NCSI_FOR_EACH_PACKAGE(ndp, np) {

		if (ndp->force_package && np != ndp->force_package)

			continue;

		NCSI_FOR_EACH_CHANNEL(np, nc) {

			spin_lock_irqsave(&nc->lock, flags);
@@ -1594,6 +1611,9 @@ struct ncsi_dev *ncsi_register_dev(struct net_device *dev, 
	ndp->ptype.dev = dev;

	dev_add_pack(&ndp->ptype);



	/* Set up generic netlink interface */

	ncsi_init_netlink(dev);



	return nd;

}

EXPORT_SYMBOL_GPL(ncsi_register_dev);
@@ -1673,6 +1693,8 @@ void ncsi_unregister_dev(struct ncsi_dev *nd) 
#endif

	spin_unlock_irqrestore(&ncsi_dev_lock, flags);



	ncsi_unregister_netlink(nd->dev);



	kfree(ndp);

}

EXPORT_SYMBOL_GPL(ncsi_unregister_dev);

net/ncsi/ncsi-netlink.c

0 → 100644
+421 −0
Original line number Diff line number Diff line 
/*

 * Copyright Samuel Mendoza-Jonas, IBM Corporation 2018.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */



#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/if_arp.h>

#include <linux/rtnetlink.h>

#include <linux/etherdevice.h>

#include <linux/module.h>

#include <net/genetlink.h>

#include <net/ncsi.h>

#include <linux/skbuff.h>

#include <net/sock.h>

#include <uapi/linux/ncsi.h>



#include "internal.h"

#include "ncsi-netlink.h"



static struct genl_family ncsi_genl_family;



static const struct nla_policy ncsi_genl_policy[NCSI_ATTR_MAX + 1] = {

	[NCSI_ATTR_IFINDEX] =		{ .type = NLA_U32 },

	[NCSI_ATTR_PACKAGE_LIST] =	{ .type = NLA_NESTED },

	[NCSI_ATTR_PACKAGE_ID] =	{ .type = NLA_U32 },

	[NCSI_ATTR_CHANNEL_ID] =	{ .type = NLA_U32 },

};



static struct ncsi_dev_priv *ndp_from_ifindex(struct net *net, u32 ifindex)

{

	struct ncsi_dev_priv *ndp;

	struct net_device *dev;

	struct ncsi_dev *nd;

	struct ncsi_dev;



	if (!net)

		return NULL;



	dev = dev_get_by_index(net, ifindex);

	if (!dev) {

		pr_err("NCSI netlink: No device for ifindex %u\n", ifindex);

		return NULL;

	}



	nd = ncsi_find_dev(dev);

	ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;



	dev_put(dev);

	return ndp;

}



static int ncsi_write_channel_info(struct sk_buff *skb,

				   struct ncsi_dev_priv *ndp,

				   struct ncsi_channel *nc)

{

	struct nlattr *vid_nest;

	struct ncsi_channel_filter *ncf;

	struct ncsi_channel_mode *m;

	u32 *data;

	int i;



	nla_put_u32(skb, NCSI_CHANNEL_ATTR_ID, nc->id);

	m = &nc->modes[NCSI_MODE_LINK];

	nla_put_u32(skb, NCSI_CHANNEL_ATTR_LINK_STATE, m->data[2]);

	if (nc->state == NCSI_CHANNEL_ACTIVE)

		nla_put_flag(skb, NCSI_CHANNEL_ATTR_ACTIVE);

	if (ndp->force_channel == nc)

		nla_put_flag(skb, NCSI_CHANNEL_ATTR_FORCED);



	nla_put_u32(skb, NCSI_CHANNEL_ATTR_VERSION_MAJOR, nc->version.version);

	nla_put_u32(skb, NCSI_CHANNEL_ATTR_VERSION_MINOR, nc->version.alpha2);

	nla_put_string(skb, NCSI_CHANNEL_ATTR_VERSION_STR, nc->version.fw_name);



	vid_nest = nla_nest_start(skb, NCSI_CHANNEL_ATTR_VLAN_LIST);

	if (!vid_nest)

		return -ENOMEM;

	ncf = nc->filters[NCSI_FILTER_VLAN];

	i = -1;

	if (ncf) {

		while ((i = find_next_bit((void *)&ncf->bitmap, ncf->total,

					  i + 1)) < ncf->total) {

			data = ncsi_get_filter(nc, NCSI_FILTER_VLAN, i);

			/* Uninitialised channels will have 'zero' vlan ids */

			if (!data || !*data)

				continue;

			nla_put_u16(skb, NCSI_CHANNEL_ATTR_VLAN_ID,

				    *(u16 *)data);

		}

	}

	nla_nest_end(skb, vid_nest);



	return 0;

}



static int ncsi_write_package_info(struct sk_buff *skb,

				   struct ncsi_dev_priv *ndp, unsigned int id)

{

	struct nlattr *pnest, *cnest, *nest;

	struct ncsi_package *np;

	struct ncsi_channel *nc;

	bool found;

	int rc;



	if (id > ndp->package_num) {

		netdev_info(ndp->ndev.dev, "NCSI: No package with id %u\n", id);

		return -ENODEV;

	}



	found = false;

	NCSI_FOR_EACH_PACKAGE(ndp, np) {

		if (np->id != id)

			continue;

		pnest = nla_nest_start(skb, NCSI_PKG_ATTR);

		if (!pnest)

			return -ENOMEM;

		nla_put_u32(skb, NCSI_PKG_ATTR_ID, np->id);

		if (ndp->force_package == np)

			nla_put_flag(skb, NCSI_PKG_ATTR_FORCED);

		cnest = nla_nest_start(skb, NCSI_PKG_ATTR_CHANNEL_LIST);

		if (!cnest) {

			nla_nest_cancel(skb, pnest);

			return -ENOMEM;

		}

		NCSI_FOR_EACH_CHANNEL(np, nc) {

			nest = nla_nest_start(skb, NCSI_CHANNEL_ATTR);

			if (!nest) {

				nla_nest_cancel(skb, cnest);

				nla_nest_cancel(skb, pnest);

				return -ENOMEM;

			}

			rc = ncsi_write_channel_info(skb, ndp, nc);

			if (rc) {

				nla_nest_cancel(skb, nest);

				nla_nest_cancel(skb, cnest);

				nla_nest_cancel(skb, pnest);

				return rc;

			}

			nla_nest_end(skb, nest);

		}

		nla_nest_end(skb, cnest);

		nla_nest_end(skb, pnest);

		found = true;

	}



	if (!found)

		return -ENODEV;



	return 0;

}



static int ncsi_pkg_info_nl(struct sk_buff *msg, struct genl_info *info)

{

	struct ncsi_dev_priv *ndp;

	unsigned int package_id;

	struct sk_buff *skb;

	struct nlattr *attr;

	void *hdr;

	int rc;



	if (!info || !info->attrs)

		return -EINVAL;



	if (!info->attrs[NCSI_ATTR_IFINDEX])

		return -EINVAL;



	if (!info->attrs[NCSI_ATTR_PACKAGE_ID])

		return -EINVAL;



	ndp = ndp_from_ifindex(genl_info_net(info),

			       nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX]));

	if (!ndp)

		return -ENODEV;



	skb = genlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);

	if (!skb)

		return -ENOMEM;



	hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,

			  &ncsi_genl_family, 0, NCSI_CMD_PKG_INFO);

	if (!hdr) {

		kfree(skb);

		return -EMSGSIZE;

	}



	package_id = nla_get_u32(info->attrs[NCSI_ATTR_PACKAGE_ID]);



	attr = nla_nest_start(skb, NCSI_ATTR_PACKAGE_LIST);

	rc = ncsi_write_package_info(skb, ndp, package_id);



	if (rc) {

		nla_nest_cancel(skb, attr);

		goto err;

	}



	nla_nest_end(skb, attr);



	genlmsg_end(skb, hdr);

	return genlmsg_reply(skb, info);



err:

	genlmsg_cancel(skb, hdr);

	kfree(skb);

	return rc;

}



static int ncsi_pkg_info_all_nl(struct sk_buff *skb,

				struct netlink_callback *cb)

{

	struct nlattr *attrs[NCSI_ATTR_MAX];

	struct ncsi_package *np, *package;

	struct ncsi_dev_priv *ndp;

	unsigned int package_id;

	struct nlattr *attr;

	void *hdr;

	int rc;



	rc = genlmsg_parse(cb->nlh, &ncsi_genl_family, attrs, NCSI_ATTR_MAX,

			   ncsi_genl_policy, NULL);

	if (rc)

		return rc;



	if (!attrs[NCSI_ATTR_IFINDEX])

		return -EINVAL;



	ndp = ndp_from_ifindex(get_net(sock_net(skb->sk)),

			       nla_get_u32(attrs[NCSI_ATTR_IFINDEX]));



	if (!ndp)

		return -ENODEV;



	package_id = cb->args[0];

	package = NULL;

	NCSI_FOR_EACH_PACKAGE(ndp, np)

		if (np->id == package_id)

			package = np;



	if (!package)

		return 0; /* done */



	hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,

			  &ncsi_genl_family, 0,  NCSI_CMD_PKG_INFO);

	if (!hdr) {

		rc = -EMSGSIZE;

		goto err;

	}



	attr = nla_nest_start(skb, NCSI_ATTR_PACKAGE_LIST);

	rc = ncsi_write_package_info(skb, ndp, package->id);

	if (rc) {

		nla_nest_cancel(skb, attr);

		goto err;

	}



	nla_nest_end(skb, attr);

	genlmsg_end(skb, hdr);



	cb->args[0] = package_id + 1;



	return skb->len;

err:

	genlmsg_cancel(skb, hdr);

	return rc;

}



static int ncsi_set_interface_nl(struct sk_buff *msg, struct genl_info *info)

{

	struct ncsi_package *np, *package;

	struct ncsi_channel *nc, *channel;

	u32 package_id, channel_id;

	struct ncsi_dev_priv *ndp;

	unsigned long flags;



	if (!info || !info->attrs)

		return -EINVAL;



	if (!info->attrs[NCSI_ATTR_IFINDEX])

		return -EINVAL;



	if (!info->attrs[NCSI_ATTR_PACKAGE_ID])

		return -EINVAL;



	ndp = ndp_from_ifindex(get_net(sock_net(msg->sk)),

			       nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX]));

	if (!ndp)

		return -ENODEV;



	package_id = nla_get_u32(info->attrs[NCSI_ATTR_PACKAGE_ID]);

	package = NULL;



	spin_lock_irqsave(&ndp->lock, flags);



	NCSI_FOR_EACH_PACKAGE(ndp, np)

		if (np->id == package_id)

			package = np;

	if (!package) {

		/* The user has set a package that does not exist */

		return -ERANGE;

	}



	channel = NULL;

	if (!info->attrs[NCSI_ATTR_CHANNEL_ID]) {

		/* Allow any channel */

		channel_id = NCSI_RESERVED_CHANNEL;

	} else {

		channel_id = nla_get_u32(info->attrs[NCSI_ATTR_CHANNEL_ID]);

		NCSI_FOR_EACH_CHANNEL(package, nc)

			if (nc->id == channel_id)

				channel = nc;

	}



	if (channel_id != NCSI_RESERVED_CHANNEL && !channel) {

		/* The user has set a channel that does not exist on this

		 * package

		 */

		netdev_info(ndp->ndev.dev, "NCSI: Channel %u does not exist!\n",

			    channel_id);

		return -ERANGE;

	}



	ndp->force_package = package;

	ndp->force_channel = channel;

	spin_unlock_irqrestore(&ndp->lock, flags);



	netdev_info(ndp->ndev.dev, "Set package 0x%x, channel 0x%x%s as preferred\n",

		    package_id, channel_id,

		    channel_id == NCSI_RESERVED_CHANNEL ? " (any)" : "");



	/* Bounce the NCSI channel to set changes */

	ncsi_stop_dev(&ndp->ndev);

	ncsi_start_dev(&ndp->ndev);



	return 0;

}



static int ncsi_clear_interface_nl(struct sk_buff *msg, struct genl_info *info)

{

	struct ncsi_dev_priv *ndp;

	unsigned long flags;



	if (!info || !info->attrs)

		return -EINVAL;



	if (!info->attrs[NCSI_ATTR_IFINDEX])

		return -EINVAL;



	ndp = ndp_from_ifindex(get_net(sock_net(msg->sk)),

			       nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX]));

	if (!ndp)

		return -ENODEV;



	/* Clear any override */

	spin_lock_irqsave(&ndp->lock, flags);

	ndp->force_package = NULL;

	ndp->force_channel = NULL;

	spin_unlock_irqrestore(&ndp->lock, flags);

	netdev_info(ndp->ndev.dev, "NCSI: Cleared preferred package/channel\n");



	/* Bounce the NCSI channel to set changes */

	ncsi_stop_dev(&ndp->ndev);

	ncsi_start_dev(&ndp->ndev);



	return 0;

}



static const struct genl_ops ncsi_ops[] = {

	{

		.cmd = NCSI_CMD_PKG_INFO,

		.policy = ncsi_genl_policy,

		.doit = ncsi_pkg_info_nl,

		.dumpit = ncsi_pkg_info_all_nl,

		.flags = 0,

	},

	{

		.cmd = NCSI_CMD_SET_INTERFACE,

		.policy = ncsi_genl_policy,

		.doit = ncsi_set_interface_nl,

		.flags = GENL_ADMIN_PERM,

	},

	{

		.cmd = NCSI_CMD_CLEAR_INTERFACE,

		.policy = ncsi_genl_policy,

		.doit = ncsi_clear_interface_nl,

		.flags = GENL_ADMIN_PERM,

	},

};



static struct genl_family ncsi_genl_family __ro_after_init = {

	.name = "NCSI",

	.version = 0,

	.maxattr = NCSI_ATTR_MAX,

	.module = THIS_MODULE,

	.ops = ncsi_ops,

	.n_ops = ARRAY_SIZE(ncsi_ops),

};



int ncsi_init_netlink(struct net_device *dev)

{

	int rc;



	rc = genl_register_family(&ncsi_genl_family);

	if (rc)

		netdev_err(dev, "ncsi: failed to register netlink family\n");



	return rc;

}



int ncsi_unregister_netlink(struct net_device *dev)

{

	int rc;



	rc = genl_unregister_family(&ncsi_genl_family);

	if (rc)

		netdev_err(dev, "ncsi: failed to unregister netlink family\n");



	return rc;

}

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