/* net/atm/pvc.c - ATM PVC sockets */

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


#include <linux/net.h>		/* struct socket, struct proto_ops */
#include <linux/atm.h>		/* ATM stuff */
#include <linux/atmdev.h>	/* ATM devices */
#include <linux/errno.h>	/* error codes */
#include <linux/kernel.h>	/* printk */
#include <linux/init.h>
#include <linux/skbuff.h>
#include <linux/bitops.h>
#include <linux/export.h>
#include <net/sock.h>		/* for sock_no_* */

#include "resources.h"		/* devs and vccs */
#include "common.h"		/* common for PVCs and SVCs */


static int pvc_shutdown(struct socket *sock, int how)
{
	return 0;
}

static int pvc_bind(struct socket *sock, struct sockaddr *sockaddr,
		    int sockaddr_len)
{
	struct sock *sk = sock->sk;
	struct sockaddr_atmpvc *addr;
	struct atm_vcc *vcc;
	int error;

	if (sockaddr_len != sizeof(struct sockaddr_atmpvc))
		return -EINVAL;
	addr = (struct sockaddr_atmpvc *)sockaddr;
	if (addr->sap_family != AF_ATMPVC)
		return -EAFNOSUPPORT;
	lock_sock(sk);
	vcc = ATM_SD(sock);
	if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
		error = -EBADFD;
		goto out;
	}
	if (test_bit(ATM_VF_PARTIAL, &vcc->flags)) {
		if (vcc->vpi != ATM_VPI_UNSPEC)
			addr->sap_addr.vpi = vcc->vpi;
		if (vcc->vci != ATM_VCI_UNSPEC)
			addr->sap_addr.vci = vcc->vci;
	}
	error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
			    addr->sap_addr.vci);
out:
	release_sock(sk);
	return error;
}

static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr,
		       int sockaddr_len, int flags)
{
	return pvc_bind(sock, sockaddr, sockaddr_len);
}

static int pvc_setsockopt(struct socket *sock, int level, int optname,
			  char __user *optval, unsigned int optlen)
{
	struct sock *sk = sock->sk;
	int error;

	lock_sock(sk);
	error = vcc_setsockopt(sock, level, optname, optval, optlen);
	release_sock(sk);
	return error;
}

static int pvc_getsockopt(struct socket *sock, int level, int optname,
			  char __user *optval, int __user *optlen)
{
	struct sock *sk = sock->sk;
	int error;

	lock_sock(sk);
	error = vcc_getsockopt(sock, level, optname, optval, optlen);
	release_sock(sk);
	return error;
}

static int pvc_getname(struct socket *sock, struct sockaddr *sockaddr,
		       int *sockaddr_len, int peer)
{
	struct sockaddr_atmpvc *addr;
	struct atm_vcc *vcc = ATM_SD(sock);

	if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags))
		return -ENOTCONN;
	*sockaddr_len = sizeof(struct sockaddr_atmpvc);
	addr = (struct sockaddr_atmpvc *)sockaddr;
	memset(addr, 0, sizeof(*addr));
	addr->sap_family = AF_ATMPVC;
	addr->sap_addr.itf = vcc->dev->number;
	addr->sap_addr.vpi = vcc->vpi;
	addr->sap_addr.vci = vcc->vci;
	return 0;
}

static const struct proto_ops pvc_proto_ops = {
	.family =	PF_ATMPVC,
	.owner =	THIS_MODULE,

	.release =	vcc_release,
	.bind =		pvc_bind,
	.connect =	pvc_connect,
	.socketpair =	sock_no_socketpair,
	.accept =	sock_no_accept,
	.getname =	pvc_getname,
	.poll =		vcc_poll,
	.ioctl =	vcc_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl = vcc_compat_ioctl,
#endif
	.listen =	sock_no_listen,
	.shutdown =	pvc_shutdown,
	.setsockopt =	pvc_setsockopt,
	.getsockopt =	pvc_getsockopt,
	.sendmsg =	vcc_sendmsg,
	.recvmsg =	vcc_recvmsg,
	.mmap =		sock_no_mmap,
	.sendpage =	sock_no_sendpage,
};


static int pvc_create(struct net *net, struct socket *sock, int protocol,
		      int kern)
{
	if (net != &init_net)
		return -EAFNOSUPPORT;

	sock->ops = &pvc_proto_ops;
	return vcc_create(net, sock, protocol, PF_ATMPVC, kern);
}

static const struct net_proto_family pvc_family_ops = {
	.family = PF_ATMPVC,
	.create = pvc_create,
	.owner = THIS_MODULE,
};


/*
 *	Initialize the ATM PVC protocol family
 */


int __init atmpvc_init(void)
{
	return sock_register(&pvc_family_ops);
}

void atmpvc_exit(void)
{
	sock_unregister(PF_ATMPVC);
}
='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>Johan Hovold &lt;johan@kernel.org&gt;</td><td class='right'>2017-01-30 11:26:38 +0100</td></tr>
<tr><th>committer</th><td>Jiri Kosina &lt;jkosina@suse.cz&gt;</td><td class='right'>2017-01-31 12:59:32 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/bcm2835-aux.h?id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>7a7b5df84b6b4e5d599c7289526eed96541a0654</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/clock/bcm2835-aux.h?id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>cf7514c7ddf4410fe37ca9099a2785e1cf08fa7d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/clock/bcm2835-aux.h?id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>include/dt-bindings/clock/bcm2835-aux.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/bcm2835-aux.h?id=877a021e08ccb6434718c0cc781fdf943c884cc0'>877a021e08ccb6434718c0cc781fdf943c884cc0</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/clock/bcm2835-aux.h?id=7a7b5df84b6b4e5d599c7289526eed96541a0654&amp;id2=877a021e08ccb6434718c0cc781fdf943c884cc0'>diff</a>)</td></tr></table>
<div class='commit-subject'>HID: cp2112: fix sleep-while-atomic</div><div class='commit-msg'>A recent commit fixing DMA-buffers on stack added a shared transfer
buffer protected by a spinlock. This is broken as the USB HID request
callbacks can sleep. Fix this up by replacing the spinlock with a mutex.

Fixes: 1ffb3c40ffb5 ("HID: cp2112: make transfer buffers DMA capable")
Cc: stable &lt;stable@vger.kernel.org&gt;	# 4.9
Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
Reviewed-by: Benjamin Tissoires &lt;benjamin.tissoires@redhat.com&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>Diffstat</a> (limited to 'include/dt-bindings/clock/bcm2835-aux.h')</div><table summary='diffstat' class='diffstat'>