/*
 *	NET3:	Support for 802.2 demultiplexing off Ethernet
 *		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.
 *
 *		Demultiplex 802.2 encoded protocols. We match the entry by the
 *		SSAP/DSAP pair and then deliver to the registered datalink that
 *		matches. The control byte is ignored and handling of such items
 *		is up to the routine passed the frame.
 *
 *		Unlike the 802.3 datalink we have a list of 802.2 entries as
 *		there are multiple protocols to demux. The list is currently
 *		short (3 or 4 entries at most). The current demux assumes this.
 */
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <net/datalink.h>
#include <linux/mm.h>
#include <linux/in.h>
#include <linux/init.h>
#include <net/llc.h>
#include <net/p8022.h>

static int p8022_request(struct datalink_proto *dl, struct sk_buff *skb,
			 unsigned char *dest)
{
	llc_build_and_send_ui_pkt(dl->sap, skb, dest, dl->sap->laddr.lsap);
	return 0;
}

struct datalink_proto *register_8022_client(unsigned char type,
					    int (*func)(struct sk_buff *skb,
							struct net_device *dev,
							struct packet_type *pt,
							struct net_device *orig_dev))
{
	struct datalink_proto *proto;

	proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
	if (proto) {
		proto->type[0]		= type;
		proto->header_length	= 3;
		proto->request		= p8022_request;
		proto->sap = llc_sap_open(type, func);
		if (!proto->sap) {
			kfree(proto);
			proto = NULL;
		}
	}
	return proto;
}

void unregister_8022_client(struct datalink_proto *proto)
{
	llc_sap_put(proto->sap);
	kfree(proto);
}

EXPORT_SYMBOL(register_8022_client);
EXPORT_SYMBOL(unregister_8022_client);

MODULE_LICENSE("GPL");
rivate-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/drm.h?h=nds-private-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/drm/drm.h?h=nds-private-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/uapi/drm/drm.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?h=nds-private-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/uapi?h=nds-private-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94'>uapi</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/uapi/drm?h=nds-private-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94'>drm</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/uapi/drm/drm.h?h=nds-private-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94'>drm.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include/uapi/drm/drm.h?h=nds-private-remove&amp;id=3484ecbe0e9deb94afb0b9b6172d77e98eb72b94&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
</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>Christoph Hellwig &lt;hch@lst.de&gt;</td><td class='right'>2017-02-05 18:10:35 +0100</td></tr>
<tr><th>committer</th><td>Jens Axboe &lt;axboe@fb.com&gt;</td><td class='right'>2017-02-06 09:34:46 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/intel-sst.h?id=eeeefd41843218c55a8782a6920f044d9bf6207a'>eeeefd41843218c55a8782a6920f044d9bf6207a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/trace/events/intel-sst.h?id=eeeefd41843218c55a8782a6920f044d9bf6207a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=eeeefd41843218c55a8782a6920f044d9bf6207a'>c342eac46626e62745aa8e1a982626efca8b121d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/trace/events/intel-sst.h?id=eeeefd41843218c55a8782a6920f044d9bf6207a'>include/trace/events/intel-sst.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/intel-sst.h?id=c14024dbb156c8392908aaa822097d27c6af8ec8'>c14024dbb156c8392908aaa822097d27c6af8ec8</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/intel-sst.h?id=eeeefd41843218c55a8782a6920f044d9bf6207a&amp;id2=c14024dbb156c8392908aaa822097d27c6af8ec8'>diff</a>)</td></tr></table>
<div class='commit-subject'>block: don't try Write Same from __blkdev_issue_zeroout</div><div class='commit-msg'>Write Same can return an error asynchronously if it turns out the
underlying SCSI device does not support Write Same, which makes a
proper fallback to other methods in __blkdev_issue_zeroout impossible.
Thus only issue a Write Same from blkdev_issue_zeroout an don't try it
at all from __blkdev_issue_zeroout as a non-invasive workaround.

Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Reported-by: Junichi Nomura &lt;j-nomura@ce.jp.nec.com&gt;
Fixes: e73c23ff ("block: add async variant of blkdev_issue_zeroout")
Tested-by: Junichi Nomura &lt;j-nomura@ce.jp.nec.com&gt;
Signed-off-by: Jens Axboe &lt;axboe@fb.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=eeeefd41843218c55a8782a6920f044d9bf6207a'>Diffstat</a> (limited to 'include/trace/events/intel-sst.h')</div><table summary='diffstat' class='diffstat'>