/*
 * IrDA netlink layer, for stack configuration.
 *
 * Copyright (c) 2007 Samuel Ortiz <samuel@sortiz.org>
 *
 * Partly based on the 802.11 nelink implementation
 * (see net/wireless/nl80211.c) which is:
 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/socket.h>
#include <linux/irda.h>
#include <linux/gfp.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/irda/irda.h>
#include <net/irda/irlap.h>
#include <net/genetlink.h>



static struct genl_family irda_nl_family;

static struct net_device * ifname_to_netdev(struct net *net, struct genl_info *info)
{
	char * ifname;

	if (!info->attrs[IRDA_NL_ATTR_IFNAME])
		return NULL;

	ifname = nla_data(info->attrs[IRDA_NL_ATTR_IFNAME]);

	pr_debug("%s(): Looking for %s\n", __func__, ifname);

	return dev_get_by_name(net, ifname);
}

static int irda_nl_set_mode(struct sk_buff *skb, struct genl_info *info)
{
	struct net_device * dev;
	struct irlap_cb * irlap;
	u32 mode;

	if (!info->attrs[IRDA_NL_ATTR_MODE])
		return -EINVAL;

	mode = nla_get_u32(info->attrs[IRDA_NL_ATTR_MODE]);

	pr_debug("%s(): Switching to mode: %d\n", __func__, mode);

	dev = ifname_to_netdev(&init_net, info);
	if (!dev)
		return -ENODEV;

	irlap = (struct irlap_cb *)dev->atalk_ptr;
	if (!irlap) {
		dev_put(dev);
		return -ENODEV;
	}

	irlap->mode = mode;

	dev_put(dev);

	return 0;
}

static int irda_nl_get_mode(struct sk_buff *skb, struct genl_info *info)
{
	struct net_device * dev;
	struct irlap_cb * irlap;
	struct sk_buff *msg;
	void *hdr;
	int ret = -ENOBUFS;

	dev = ifname_to_netdev(&init_net, info);
	if (!dev)
		return -ENODEV;

	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!msg) {
		dev_put(dev);
		return -ENOMEM;
	}

	irlap = (struct irlap_cb *)dev->atalk_ptr;
	if (!irlap) {
		ret = -ENODEV;
		goto err_out;
	}

	hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
			  &irda_nl_family, 0,  IRDA_NL_CMD_GET_MODE);
	if (hdr == NULL) {
		ret = -EMSGSIZE;
		goto err_out;
	}

	if(nla_put_string(msg, IRDA_NL_ATTR_IFNAME,
			  dev->name))
		goto err_out;

	if(nla_put_u32(msg, IRDA_NL_ATTR_MODE, irlap->mode))
		goto err_out;

	genlmsg_end(msg, hdr);

	return genlmsg_reply(msg, info);

 err_out:
	nlmsg_free(msg);
	dev_put(dev);

	return ret;
}

static const struct nla_policy irda_nl_policy[IRDA_NL_ATTR_MAX + 1] = {
	[IRDA_NL_ATTR_IFNAME] = { .type = NLA_NUL_STRING,
				  .len = IFNAMSIZ-1 },
	[IRDA_NL_ATTR_MODE] = { .type = NLA_U32 },
};

static const struct genl_ops irda_nl_ops[] = {
	{
		.cmd = IRDA_NL_CMD_SET_MODE,
		.doit = irda_nl_set_mode,
		.policy = irda_nl_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = IRDA_NL_CMD_GET_MODE,
		.doit = irda_nl_get_mode,
		.policy = irda_nl_policy,
		/* can be retrieved by unprivileged users */
	},

};

static struct genl_family irda_nl_family __ro_after_init = {
	.name = IRDA_NL_NAME,
	.hdrsize = 0,
	.version = IRDA_NL_VERSION,
	.maxattr = IRDA_NL_CMD_MAX,
	.module = THIS_MODULE,
	.ops = irda_nl_ops,
	.n_ops = ARRAY_SIZE(irda_nl_ops),
};

int __init irda_nl_register(void)
{
	return genl_register_family(&irda_nl_family);
}

void irda_nl_unregister(void)
{
	genl_unregister_family(&irda_nl_family);
}
n='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>George Spelvin &lt;linux@sciencehorizons.net&gt;</td><td class='right'>2016-05-29 08:05:56 -0400</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-05-29 07:33:47 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/reset?id=e0ab7af9bd1c25e40b9a1dbeb2a634b88267b9d7'>e0ab7af9bd1c25e40b9a1dbeb2a634b88267b9d7</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/reset?id=e0ab7af9bd1c25e40b9a1dbeb2a634b88267b9d7'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=e0ab7af9bd1c25e40b9a1dbeb2a634b88267b9d7'>0012599b46ccd837c6ce808b808456777f7bb92f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/reset?id=e0ab7af9bd1c25e40b9a1dbeb2a634b88267b9d7'>include/dt-bindings/reset</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/reset?id=f2a031b66ec6da1512f9db228e4174ad2c7d2688'>f2a031b66ec6da1512f9db228e4174ad2c7d2688</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/reset?id=e0ab7af9bd1c25e40b9a1dbeb2a634b88267b9d7&amp;id2=f2a031b66ec6da1512f9db228e4174ad2c7d2688'>diff</a>)</td></tr></table>
<div class='commit-subject'>hash_string: Fix zero-length case for !DCACHE_WORD_ACCESS</div><div class='commit-msg'>The self-test was updated to cover zero-length strings; the function
needs to be updated, too.

Reported-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Signed-off-by: George Spelvin &lt;linux@sciencehorizons.net&gt;
Fixes: fcfd2fbf22d2 ("fs/namei.c: Add hashlen_string() function")
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=e0ab7af9bd1c25e40b9a1dbeb2a634b88267b9d7'>Diffstat</a> (limited to 'include/dt-bindings/reset')</div><table summary='diffstat' class='diffstat'>