Phonet: connected sockets glue (9995a32b) · Commits · e / devices / android_kernel_teracube_2e

include/net/phonet/pep.h

0 → 100644

+43 −0

Original line number	Diff line number	Diff line
		/*
		* 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

net/phonet/socket.c

+97 −0

Original line number	Diff line number	Diff line
		@@ -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 */