diff options
| -rw-r--r-- | include/net/phonet/pep.h | 43 | ||||
| -rw-r--r-- | net/phonet/socket.c | 97 |
2 files changed, 140 insertions, 0 deletions
diff --git a/include/net/phonet/pep.h b/include/net/phonet/pep.h new file mode 100644 index 0000000..b2f8c54 --- /dev/null +++ b/include/net/phonet/pep.h @@ -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 diff --git a/net/phonet/socket.c b/net/phonet/socket.c index dfd4061..cea1136 100644 --- a/net/phonet/socket.c +++ b/net/phonet/socket.c @@ -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 */ |
