/* net/atm/raw.c - Raw AAL0 and AAL5 transports */

/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */

#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__

#include <linux/module.h>
#include <linux/atmdev.h>
#include <linux/capability.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/mm.h>
#include <linux/slab.h>

#include "common.h"
#include "protocols.h"

/*
 * SKB == NULL indicates that the link is being closed
 */

static void atm_push_raw(struct atm_vcc *vcc, struct sk_buff *skb)
{
	if (skb) {
		struct sock *sk = sk_atm(vcc);

		skb_queue_tail(&sk->sk_receive_queue, skb);
		sk->sk_data_ready(sk);
	}
}

static void atm_pop_raw(struct atm_vcc *vcc, struct sk_buff *skb)
{
	struct sock *sk = sk_atm(vcc);

	pr_debug("(%d) %d -= %d\n",
		 vcc->vci, sk_wmem_alloc_get(sk), skb->truesize);
	atomic_sub(skb->truesize, &sk->sk_wmem_alloc);
	dev_kfree_skb_any(skb);
	sk->sk_write_space(sk);
}

static int atm_send_aal0(struct atm_vcc *vcc, struct sk_buff *skb)
{
	/*
	 * Note that if vpi/vci are _ANY or _UNSPEC the below will
	 * still work
	 */
	if (!capable(CAP_NET_ADMIN) &&
	    (((u32 *)skb->data)[0] & (ATM_HDR_VPI_MASK | ATM_HDR_VCI_MASK)) !=
	    ((vcc->vpi << ATM_HDR_VPI_SHIFT) |
	     (vcc->vci << ATM_HDR_VCI_SHIFT))) {
		kfree_skb(skb);
		return -EADDRNOTAVAIL;
	}
	return vcc->dev->ops->send(vcc, skb);
}

int atm_init_aal0(struct atm_vcc *vcc)
{
	vcc->push = atm_push_raw;
	vcc->pop = atm_pop_raw;
	vcc->push_oam = NULL;
	vcc->send = atm_send_aal0;
	return 0;
}

int atm_init_aal34(struct atm_vcc *vcc)
{
	vcc->push = atm_push_raw;
	vcc->pop = atm_pop_raw;
	vcc->push_oam = NULL;
	vcc->send = vcc->dev->ops->send;
	return 0;
}

int atm_init_aal5(struct atm_vcc *vcc)
{
	vcc->push = atm_push_raw;
	vcc->pop = atm_pop_raw;
	vcc->push_oam = NULL;
	vcc->send = vcc->dev->ops->send;
	return 0;
}
EXPORT_SYMBOL(atm_init_aal5);
g</a><a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests/vDSO?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/vDSO?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/vDSO?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/vDSO'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>testing</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>selftests</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/vDSO?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>vDSO</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='eeeefd41843218c55a8782a6920f044d9bf6207a'/><table><tr><td colspan='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>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/tools/testing/selftests/vDSO?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>eeeefd41843218c55a8782a6920f044d9bf6207a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/testing/selftests/vDSO?id=eeeefd41843218c55a8782a6920f044d9bf6207a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>c342eac46626e62745aa8e1a982626efca8b121d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests/vDSO?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>tools/testing/selftests/vDSO</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/vDSO?h=nds-private-remove&amp;id=c14024dbb156c8392908aaa822097d27c6af8ec8'>c14024dbb156c8392908aaa822097d27c6af8ec8</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/vDSO?h=nds-private-remove&amp;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/?h=nds-private-remove&amp;id=eeeefd41843218c55a8782a6920f044d9bf6207a'>Diffstat</a> (limited to 'tools/testing/selftests/vDSO')</div><table summary='diffstat' class='diffstat'>