Subversion Repositories or1k

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

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

#include <linux/config.h>

#include <linux/net.h>          /* struct socket, struct net_proto,

                                   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 <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 *optval, 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 *optval, int *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;

        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 struct proto_ops pvc_proto_ops = {

        .family =       PF_ATMPVC,

        .release =      vcc_release,

        .bind =         pvc_bind,

        .connect =      pvc_connect,

        .socketpair =   sock_no_socketpair,

        .accept =       sock_no_accept,

        .getname =      pvc_getname,

        .poll =         atm_poll,

        .ioctl =        vcc_ioctl,

        .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 socket *sock,int protocol)

{

        sock->ops = &pvc_proto_ops;

        return vcc_create(sock, protocol, PF_ATMPVC);

}

static struct net_proto_family pvc_family_ops = {

        PF_ATMPVC,

        pvc_create,

        0,                       /* no authentication */

        0,                       /* no encryption */

};

/*

 *      Initialize the ATM PVC protocol family

 */

int atmpvc_init(void)

{

        return sock_register(&pvc_family_ops);

}

void atmpvc_exit(void)

{

        sock_unregister(PF_ATMPVC);

}