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linux-next/drivers/isdn/mISDN/socket.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

836 lines
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/*
*
* Author Karsten Keil <kkeil@novell.com>
*
* Copyright 2008 by Karsten Keil <kkeil@novell.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/mISDNif.h>
#include <linux/slab.h>
#include "core.h"
static u_int *debug;
static struct proto mISDN_proto = {
.name = "misdn",
.owner = THIS_MODULE,
.obj_size = sizeof(struct mISDN_sock)
};
#define _pms(sk) ((struct mISDN_sock *)sk)
static struct mISDN_sock_list data_sockets = {
.lock = __RW_LOCK_UNLOCKED(data_sockets.lock)
};
static struct mISDN_sock_list base_sockets = {
.lock = __RW_LOCK_UNLOCKED(base_sockets.lock)
};
#define L2_HEADER_LEN 4
static inline struct sk_buff *
_l2_alloc_skb(unsigned int len, gfp_t gfp_mask)
{
struct sk_buff *skb;
skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask);
if (likely(skb))
skb_reserve(skb, L2_HEADER_LEN);
return skb;
}
static void
mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk)
{
write_lock_bh(&l->lock);
sk_add_node(sk, &l->head);
write_unlock_bh(&l->lock);
}
static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk)
{
write_lock_bh(&l->lock);
sk_del_node_init(sk);
write_unlock_bh(&l->lock);
}
static int
mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb)
{
struct mISDN_sock *msk;
int err;
msk = container_of(ch, struct mISDN_sock, ch);
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb);
if (msk->sk.sk_state == MISDN_CLOSED)
return -EUNATCH;
__net_timestamp(skb);
err = sock_queue_rcv_skb(&msk->sk, skb);
if (err)
printk(KERN_WARNING "%s: error %d\n", __func__, err);
return err;
}
static int
mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
{
struct mISDN_sock *msk;
msk = container_of(ch, struct mISDN_sock, ch);
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg);
switch (cmd) {
case CLOSE_CHANNEL:
msk->sk.sk_state = MISDN_CLOSED;
break;
}
return 0;
}
static inline void
mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
{
struct timeval tv;
if (_pms(sk)->cmask & MISDN_TIME_STAMP) {
skb_get_timestamp(skb, &tv);
put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv);
}
}
static int
mISDN_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t len, int flags)
{
struct sk_buff *skb;
struct sock *sk = sock->sk;
struct sockaddr_mISDN *maddr;
int copied, err;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n",
__func__, (int)len, flags, _pms(sk)->ch.nr,
sk->sk_protocol);
if (flags & (MSG_OOB))
return -EOPNOTSUPP;
if (sk->sk_state == MISDN_CLOSED)
return 0;
skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err);
if (!skb)
return err;
if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) {
msg->msg_namelen = sizeof(struct sockaddr_mISDN);
maddr = (struct sockaddr_mISDN *)msg->msg_name;
maddr->family = AF_ISDN;
maddr->dev = _pms(sk)->dev->id;
if ((sk->sk_protocol == ISDN_P_LAPD_TE) ||
(sk->sk_protocol == ISDN_P_LAPD_NT)) {
maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff;
maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff;
maddr->sapi = mISDN_HEAD_ID(skb) & 0xff;
} else {
maddr->channel = _pms(sk)->ch.nr;
maddr->sapi = _pms(sk)->ch.addr & 0xFF;
maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF;
}
} else {
if (msg->msg_namelen)
printk(KERN_WARNING "%s: too small namelen %d\n",
__func__, msg->msg_namelen);
msg->msg_namelen = 0;
}
copied = skb->len + MISDN_HEADER_LEN;
if (len < copied) {
if (flags & MSG_PEEK)
atomic_dec(&skb->users);
else
skb_queue_head(&sk->sk_receive_queue, skb);
return -ENOSPC;
}
memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb),
MISDN_HEADER_LEN);
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
mISDN_sock_cmsg(sk, msg, skb);
skb_free_datagram(sk, skb);
return err ? : copied;
}
static int
mISDN_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t len)
{
struct sock *sk = sock->sk;
struct sk_buff *skb;
int err = -ENOMEM;
struct sockaddr_mISDN *maddr;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n",
__func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr,
sk->sk_protocol);
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE))
return -EINVAL;
if (len < MISDN_HEADER_LEN)
return -EINVAL;
if (sk->sk_state != MISDN_BOUND)
return -EBADFD;
lock_sock(sk);
skb = _l2_alloc_skb(len, GFP_KERNEL);
if (!skb)
goto done;
if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
err = -EFAULT;
goto done;
}
memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN);
skb_pull(skb, MISDN_HEADER_LEN);
if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) {
/* if we have a address, we use it */
maddr = (struct sockaddr_mISDN *)msg->msg_name;
mISDN_HEAD_ID(skb) = maddr->channel;
} else { /* use default for L2 messages */
if ((sk->sk_protocol == ISDN_P_LAPD_TE) ||
(sk->sk_protocol == ISDN_P_LAPD_NT))
mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr;
}
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s: ID:%x\n",
__func__, mISDN_HEAD_ID(skb));
err = -ENODEV;
if (!_pms(sk)->ch.peer)
goto done;
err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb);
if (err)
goto done;
else {
skb = NULL;
err = len;
}
done:
if (skb)
kfree_skb(skb);
release_sock(sk);
return err;
}
static int
data_sock_release(struct socket *sock)
{
struct sock *sk = sock->sk;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
if (!sk)
return 0;
switch (sk->sk_protocol) {
case ISDN_P_TE_S0:
case ISDN_P_NT_S0:
case ISDN_P_TE_E1:
case ISDN_P_NT_E1:
if (sk->sk_state == MISDN_BOUND)
delete_channel(&_pms(sk)->ch);
else
mISDN_sock_unlink(&data_sockets, sk);
break;
case ISDN_P_LAPD_TE:
case ISDN_P_LAPD_NT:
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
case ISDN_P_B_X75SLP:
case ISDN_P_B_L2DTMF:
case ISDN_P_B_L2DSP:
case ISDN_P_B_L2DSPHDLC:
delete_channel(&_pms(sk)->ch);
mISDN_sock_unlink(&data_sockets, sk);
break;
}
lock_sock(sk);
sock_orphan(sk);
skb_queue_purge(&sk->sk_receive_queue);
release_sock(sk);
sock_put(sk);
return 0;
}
static int
data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p)
{
struct mISDN_ctrl_req cq;
int err = -EINVAL, val[2];
struct mISDNchannel *bchan, *next;
lock_sock(sk);
if (!_pms(sk)->dev) {
err = -ENODEV;
goto done;
}
switch (cmd) {
case IMCTRLREQ:
if (copy_from_user(&cq, p, sizeof(cq))) {
err = -EFAULT;
break;
}
if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) {
list_for_each_entry_safe(bchan, next,
&_pms(sk)->dev->bchannels, list) {
if (bchan->nr == cq.channel) {
err = bchan->ctrl(bchan,
CONTROL_CHANNEL, &cq);
break;
}
}
} else
err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D,
CONTROL_CHANNEL, &cq);
if (err)
break;
if (copy_to_user(p, &cq, sizeof(cq)))
err = -EFAULT;
break;
case IMCLEAR_L2:
if (sk->sk_protocol != ISDN_P_LAPD_NT) {
err = -EINVAL;
break;
}
val[0] = cmd;
if (get_user(val[1], (int __user *)p)) {
err = -EFAULT;
break;
}
err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
CONTROL_CHANNEL, val);
break;
case IMHOLD_L1:
if (sk->sk_protocol != ISDN_P_LAPD_NT
&& sk->sk_protocol != ISDN_P_LAPD_TE) {
err = -EINVAL;
break;
}
val[0] = cmd;
if (get_user(val[1], (int __user *)p)) {
err = -EFAULT;
break;
}
err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
CONTROL_CHANNEL, val);
break;
default:
err = -EINVAL;
break;
}
done:
release_sock(sk);
return err;
}
static int
data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
int err = 0, id;
struct sock *sk = sock->sk;
struct mISDNdevice *dev;
struct mISDNversion ver;
switch (cmd) {
case IMGETVERSION:
ver.major = MISDN_MAJOR_VERSION;
ver.minor = MISDN_MINOR_VERSION;
ver.release = MISDN_RELEASE;
if (copy_to_user((void __user *)arg, &ver, sizeof(ver)))
err = -EFAULT;
break;
case IMGETCOUNT:
id = get_mdevice_count();
if (put_user(id, (int __user *)arg))
err = -EFAULT;
break;
case IMGETDEVINFO:
if (get_user(id, (int __user *)arg)) {
err = -EFAULT;
break;
}
dev = get_mdevice(id);
if (dev) {
struct mISDN_devinfo di;
di.id = dev->id;
di.Dprotocols = dev->Dprotocols;
di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
di.protocol = dev->D.protocol;
memcpy(di.channelmap, dev->channelmap,
sizeof(di.channelmap));
di.nrbchan = dev->nrbchan;
strcpy(di.name, dev_name(&dev->dev));
if (copy_to_user((void __user *)arg, &di, sizeof(di)))
err = -EFAULT;
} else
err = -ENODEV;
break;
default:
if (sk->sk_state == MISDN_BOUND)
err = data_sock_ioctl_bound(sk, cmd,
(void __user *)arg);
else
err = -ENOTCONN;
}
return err;
}
static int data_sock_setsockopt(struct socket *sock, int level, int optname,
char __user *optval, unsigned int len)
{
struct sock *sk = sock->sk;
int err = 0, opt = 0;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock,
level, optname, optval, len);
lock_sock(sk);
switch (optname) {
case MISDN_TIME_STAMP:
if (get_user(opt, (int __user *)optval)) {
err = -EFAULT;
break;
}
if (opt)
_pms(sk)->cmask |= MISDN_TIME_STAMP;
else
_pms(sk)->cmask &= ~MISDN_TIME_STAMP;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int data_sock_getsockopt(struct socket *sock, int level, int optname,
char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
int len, opt;
if (get_user(len, optlen))
return -EFAULT;
switch (optname) {
case MISDN_TIME_STAMP:
if (_pms(sk)->cmask & MISDN_TIME_STAMP)
opt = 1;
else
opt = 0;
if (put_user(opt, optval))
return -EFAULT;
break;
default:
return -ENOPROTOOPT;
}
return 0;
}
static int
data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
{
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
struct sock *sk = sock->sk;
struct hlist_node *node;
struct sock *csk;
int err = 0;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
if (addr_len != sizeof(struct sockaddr_mISDN))
return -EINVAL;
if (!maddr || maddr->family != AF_ISDN)
return -EINVAL;
lock_sock(sk);
if (_pms(sk)->dev) {
err = -EALREADY;
goto done;
}
_pms(sk)->dev = get_mdevice(maddr->dev);
if (!_pms(sk)->dev) {
err = -ENODEV;
goto done;
}
if (sk->sk_protocol < ISDN_P_B_START) {
read_lock_bh(&data_sockets.lock);
sk_for_each(csk, node, &data_sockets.head) {
if (sk == csk)
continue;
if (_pms(csk)->dev != _pms(sk)->dev)
continue;
if (csk->sk_protocol >= ISDN_P_B_START)
continue;
if (IS_ISDN_P_TE(csk->sk_protocol)
== IS_ISDN_P_TE(sk->sk_protocol))
continue;
read_unlock_bh(&data_sockets.lock);
err = -EBUSY;
goto done;
}
read_unlock_bh(&data_sockets.lock);
}
_pms(sk)->ch.send = mISDN_send;
_pms(sk)->ch.ctrl = mISDN_ctrl;
switch (sk->sk_protocol) {
case ISDN_P_TE_S0:
case ISDN_P_NT_S0:
case ISDN_P_TE_E1:
case ISDN_P_NT_E1:
mISDN_sock_unlink(&data_sockets, sk);
err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch,
sk->sk_protocol, maddr);
if (err)
mISDN_sock_link(&data_sockets, sk);
break;
case ISDN_P_LAPD_TE:
case ISDN_P_LAPD_NT:
err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch,
sk->sk_protocol, maddr);
break;
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
case ISDN_P_B_X75SLP:
case ISDN_P_B_L2DTMF:
case ISDN_P_B_L2DSP:
case ISDN_P_B_L2DSPHDLC:
err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch,
sk->sk_protocol, maddr);
break;
default:
err = -EPROTONOSUPPORT;
}
if (err)
goto done;
sk->sk_state = MISDN_BOUND;
_pms(sk)->ch.protocol = sk->sk_protocol;
done:
release_sock(sk);
return err;
}
static int
data_sock_getname(struct socket *sock, struct sockaddr *addr,
int *addr_len, int peer)
{
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
struct sock *sk = sock->sk;
if (!_pms(sk)->dev)
return -EBADFD;
lock_sock(sk);
*addr_len = sizeof(*maddr);
maddr->dev = _pms(sk)->dev->id;
maddr->channel = _pms(sk)->ch.nr;
maddr->sapi = _pms(sk)->ch.addr & 0xff;
maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff;
release_sock(sk);
return 0;
}
static const struct proto_ops data_sock_ops = {
.family = PF_ISDN,
.owner = THIS_MODULE,
.release = data_sock_release,
.ioctl = data_sock_ioctl,
.bind = data_sock_bind,
.getname = data_sock_getname,
.sendmsg = mISDN_sock_sendmsg,
.recvmsg = mISDN_sock_recvmsg,
.poll = datagram_poll,
.listen = sock_no_listen,
.shutdown = sock_no_shutdown,
.setsockopt = data_sock_setsockopt,
.getsockopt = data_sock_getsockopt,
.connect = sock_no_connect,
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.mmap = sock_no_mmap
};
static int
data_sock_create(struct net *net, struct socket *sock, int protocol)
{
struct sock *sk;
if (sock->type != SOCK_DGRAM)
return -ESOCKTNOSUPPORT;
sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto);
if (!sk)
return -ENOMEM;
sock_init_data(sock, sk);
sock->ops = &data_sock_ops;
sock->state = SS_UNCONNECTED;
sock_reset_flag(sk, SOCK_ZAPPED);
sk->sk_protocol = protocol;
sk->sk_state = MISDN_OPEN;
mISDN_sock_link(&data_sockets, sk);
return 0;
}
static int
base_sock_release(struct socket *sock)
{
struct sock *sk = sock->sk;
printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
if (!sk)
return 0;
mISDN_sock_unlink(&base_sockets, sk);
sock_orphan(sk);
sock_put(sk);
return 0;
}
static int
base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
int err = 0, id;
struct mISDNdevice *dev;
struct mISDNversion ver;
switch (cmd) {
case IMGETVERSION:
ver.major = MISDN_MAJOR_VERSION;
ver.minor = MISDN_MINOR_VERSION;
ver.release = MISDN_RELEASE;
if (copy_to_user((void __user *)arg, &ver, sizeof(ver)))
err = -EFAULT;
break;
case IMGETCOUNT:
id = get_mdevice_count();
if (put_user(id, (int __user *)arg))
err = -EFAULT;
break;
case IMGETDEVINFO:
if (get_user(id, (int __user *)arg)) {
err = -EFAULT;
break;
}
dev = get_mdevice(id);
if (dev) {
struct mISDN_devinfo di;
di.id = dev->id;
di.Dprotocols = dev->Dprotocols;
di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
di.protocol = dev->D.protocol;
memcpy(di.channelmap, dev->channelmap,
sizeof(di.channelmap));
di.nrbchan = dev->nrbchan;
strcpy(di.name, dev_name(&dev->dev));
if (copy_to_user((void __user *)arg, &di, sizeof(di)))
err = -EFAULT;
} else
err = -ENODEV;
break;
case IMSETDEVNAME:
{
struct mISDN_devrename dn;
if (copy_from_user(&dn, (void __user *)arg,
sizeof(dn))) {
err = -EFAULT;
break;
}
dev = get_mdevice(dn.id);
if (dev)
err = device_rename(&dev->dev, dn.name);
else
err = -ENODEV;
}
break;
default:
err = -EINVAL;
}
return err;
}
static int
base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
{
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
struct sock *sk = sock->sk;
int err = 0;
if (!maddr || maddr->family != AF_ISDN)
return -EINVAL;
lock_sock(sk);
if (_pms(sk)->dev) {
err = -EALREADY;
goto done;
}
_pms(sk)->dev = get_mdevice(maddr->dev);
if (!_pms(sk)->dev) {
err = -ENODEV;
goto done;
}
sk->sk_state = MISDN_BOUND;
done:
release_sock(sk);
return err;
}
static const struct proto_ops base_sock_ops = {
.family = PF_ISDN,
.owner = THIS_MODULE,
.release = base_sock_release,
.ioctl = base_sock_ioctl,
.bind = base_sock_bind,
.getname = sock_no_getname,
.sendmsg = sock_no_sendmsg,
.recvmsg = sock_no_recvmsg,
.poll = sock_no_poll,
.listen = sock_no_listen,
.shutdown = sock_no_shutdown,
.setsockopt = sock_no_setsockopt,
.getsockopt = sock_no_getsockopt,
.connect = sock_no_connect,
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.mmap = sock_no_mmap
};
static int
base_sock_create(struct net *net, struct socket *sock, int protocol)
{
struct sock *sk;
if (sock->type != SOCK_RAW)
return -ESOCKTNOSUPPORT;
sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto);
if (!sk)
return -ENOMEM;
sock_init_data(sock, sk);
sock->ops = &base_sock_ops;
sock->state = SS_UNCONNECTED;
sock_reset_flag(sk, SOCK_ZAPPED);
sk->sk_protocol = protocol;
sk->sk_state = MISDN_OPEN;
mISDN_sock_link(&base_sockets, sk);
return 0;
}
static int
mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern)
{
int err = -EPROTONOSUPPORT;
switch (proto) {
case ISDN_P_BASE:
err = base_sock_create(net, sock, proto);
break;
case ISDN_P_TE_S0:
case ISDN_P_NT_S0:
case ISDN_P_TE_E1:
case ISDN_P_NT_E1:
case ISDN_P_LAPD_TE:
case ISDN_P_LAPD_NT:
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
case ISDN_P_B_X75SLP:
case ISDN_P_B_L2DTMF:
case ISDN_P_B_L2DSP:
case ISDN_P_B_L2DSPHDLC:
err = data_sock_create(net, sock, proto);
break;
default:
return err;
}
return err;
}
static const struct net_proto_family mISDN_sock_family_ops = {
.owner = THIS_MODULE,
.family = PF_ISDN,
.create = mISDN_sock_create,
};
int
misdn_sock_init(u_int *deb)
{
int err;
debug = deb;
err = sock_register(&mISDN_sock_family_ops);
if (err)
printk(KERN_ERR "%s: error(%d)\n", __func__, err);
return err;
}
void
misdn_sock_cleanup(void)
{
sock_unregister(PF_ISDN);
}
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