mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-18 18:23:53 +08:00
Phonet: connected sockets glue
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rémi Denis-Courmont
David S. Miller
parent
25532824fb
commit
9995a32b4d
43
include/net/phonet/pep.h
Normal file
43
include/net/phonet/pep.h
Normal file
@ -0,0 +1,43 @@
|
||||
/*
|
||||
* File: pep.h
|
||||
*
|
||||
* Phonet Pipe End Point sockets definitions
|
||||
*
|
||||
* Copyright (C) 2008 Nokia Corporation.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
|
||||
* 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifndef NET_PHONET_PEP_H
|
||||
#define NET_PHONET_PEP_H
|
||||
|
||||
struct pep_sock {
|
||||
struct pn_sock pn_sk;
|
||||
|
||||
/* Listening socket stuff: */
|
||||
struct hlist_head ackq;
|
||||
|
||||
/* Connected socket stuff: */
|
||||
u8 tx_credits;
|
||||
};
|
||||
|
||||
static inline struct pep_sock *pep_sk(struct sock *sk)
|
||||
{
|
||||
return (struct pep_sock *)sk;
|
||||
}
|
||||
|
||||
extern const struct proto_ops phonet_stream_ops;
|
||||
|
||||
#endif
|
||||
@ -25,11 +25,13 @@
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/net.h>
|
||||
#include <linux/poll.h>
|
||||
#include <net/sock.h>
|
||||
#include <net/tcp_states.h>
|
||||
|
||||
#include <linux/phonet.h>
|
||||
#include <net/phonet/phonet.h>
|
||||
#include <net/phonet/pep.h>
|
||||
#include <net/phonet/pn_dev.h>
|
||||
|
||||
static int pn_socket_release(struct socket *sock)
|
||||
@ -166,6 +168,24 @@ static int pn_socket_autobind(struct socket *sock)
|
||||
return 0; /* socket was already bound */
|
||||
}
|
||||
|
||||
static int pn_socket_accept(struct socket *sock, struct socket *newsock,
|
||||
int flags)
|
||||
{
|
||||
struct sock *sk = sock->sk;
|
||||
struct sock *newsk;
|
||||
int err;
|
||||
|
||||
newsk = sk->sk_prot->accept(sk, flags, &err);
|
||||
if (!newsk)
|
||||
return err;
|
||||
|
||||
lock_sock(newsk);
|
||||
sock_graft(newsk, newsock);
|
||||
newsock->state = SS_CONNECTED;
|
||||
release_sock(newsk);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pn_socket_getname(struct socket *sock, struct sockaddr *addr,
|
||||
int *sockaddr_len, int peer)
|
||||
{
|
||||
@ -182,6 +202,33 @@ static int pn_socket_getname(struct socket *sock, struct sockaddr *addr,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static unsigned int pn_socket_poll(struct file *file, struct socket *sock,
|
||||
poll_table *wait)
|
||||
{
|
||||
struct sock *sk = sock->sk;
|
||||
struct pep_sock *pn = pep_sk(sk);
|
||||
unsigned int mask = 0;
|
||||
|
||||
poll_wait(file, &sock->wait, wait);
|
||||
|
||||
switch (sk->sk_state) {
|
||||
case TCP_LISTEN:
|
||||
return hlist_empty(&pn->ackq) ? 0 : POLLIN;
|
||||
case TCP_CLOSE:
|
||||
return POLLERR;
|
||||
}
|
||||
|
||||
if (!skb_queue_empty(&sk->sk_receive_queue))
|
||||
mask |= POLLIN | POLLRDNORM;
|
||||
else if (sk->sk_state == TCP_CLOSE_WAIT)
|
||||
return POLLHUP;
|
||||
|
||||
if (sk->sk_state == TCP_ESTABLISHED && pn->tx_credits)
|
||||
mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
|
||||
|
||||
return mask;
|
||||
}
|
||||
|
||||
static int pn_socket_ioctl(struct socket *sock, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
@ -220,6 +267,30 @@ static int pn_socket_ioctl(struct socket *sock, unsigned int cmd,
|
||||
return sk->sk_prot->ioctl(sk, cmd, arg);
|
||||
}
|
||||
|
||||
static int pn_socket_listen(struct socket *sock, int backlog)
|
||||
{
|
||||
struct sock *sk = sock->sk;
|
||||
int err = 0;
|
||||
|
||||
if (sock->state != SS_UNCONNECTED)
|
||||
return -EINVAL;
|
||||
if (pn_socket_autobind(sock))
|
||||
return -ENOBUFS;
|
||||
|
||||
lock_sock(sk);
|
||||
if (sk->sk_state != TCP_CLOSE) {
|
||||
err = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
sk->sk_state = TCP_LISTEN;
|
||||
sk->sk_ack_backlog = 0;
|
||||
sk->sk_max_ack_backlog = backlog;
|
||||
out:
|
||||
release_sock(sk);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int pn_socket_sendmsg(struct kiocb *iocb, struct socket *sock,
|
||||
struct msghdr *m, size_t total_len)
|
||||
{
|
||||
@ -256,6 +327,32 @@ const struct proto_ops phonet_dgram_ops = {
|
||||
.sendpage = sock_no_sendpage,
|
||||
};
|
||||
|
||||
const struct proto_ops phonet_stream_ops = {
|
||||
.family = AF_PHONET,
|
||||
.owner = THIS_MODULE,
|
||||
.release = pn_socket_release,
|
||||
.bind = pn_socket_bind,
|
||||
.connect = sock_no_connect,
|
||||
.socketpair = sock_no_socketpair,
|
||||
.accept = pn_socket_accept,
|
||||
.getname = pn_socket_getname,
|
||||
.poll = pn_socket_poll,
|
||||
.ioctl = pn_socket_ioctl,
|
||||
.listen = pn_socket_listen,
|
||||
.shutdown = sock_no_shutdown,
|
||||
.setsockopt = sock_no_setsockopt,
|
||||
.getsockopt = sock_no_getsockopt,
|
||||
#ifdef CONFIG_COMPAT
|
||||
.compat_setsockopt = sock_no_setsockopt,
|
||||
.compat_getsockopt = compat_sock_no_getsockopt,
|
||||
#endif
|
||||
.sendmsg = pn_socket_sendmsg,
|
||||
.recvmsg = sock_common_recvmsg,
|
||||
.mmap = sock_no_mmap,
|
||||
.sendpage = sock_no_sendpage,
|
||||
};
|
||||
EXPORT_SYMBOL(phonet_stream_ops);
|
||||
|
||||
static DEFINE_MUTEX(port_mutex);
|
||||
|
||||
/* allocate port for a socket */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user