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net/atm/pvc.c
3.69 KB
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/* net/atm/pvc.c - ATM PVC sockets */ /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ |
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#include <linux/net.h> /* struct socket, 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> |
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#include <linux/export.h> |
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#include <net/sock.h> /* for sock_no_* */ #include "resources.h" /* devs and vccs */ #include "common.h" /* common for PVCs and SVCs */ |
6b6dd498f net/atm/pvc.c: ch... |
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static int pvc_shutdown(struct socket *sock, int how) |
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{ return 0; } |
6b6dd498f net/atm/pvc.c: ch... |
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static int pvc_bind(struct socket *sock, struct sockaddr *sockaddr, int sockaddr_len) |
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{ struct sock *sk = sock->sk; struct sockaddr_atmpvc *addr; struct atm_vcc *vcc; int error; |
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if (sockaddr_len != sizeof(struct sockaddr_atmpvc)) return -EINVAL; addr = (struct sockaddr_atmpvc *)sockaddr; if (addr->sap_family != AF_ATMPVC) return -EAFNOSUPPORT; |
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lock_sock(sk); vcc = ATM_SD(sock); if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) { error = -EBADFD; goto out; } |
6b6dd498f net/atm/pvc.c: ch... |
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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; |
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} error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi, addr->sap_addr.vci); out: release_sock(sk); return error; } |
6b6dd498f net/atm/pvc.c: ch... |
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static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr, int sockaddr_len, int flags) |
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{ |
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return pvc_bind(sock, sockaddr, sockaddr_len); |
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} static int pvc_setsockopt(struct socket *sock, int level, int optname, |
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char __user *optval, unsigned int optlen) |
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{ struct sock *sk = sock->sk; int error; lock_sock(sk); error = vcc_setsockopt(sock, level, optname, optval, optlen); release_sock(sk); return error; } |
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static int pvc_getsockopt(struct socket *sock, int level, int optname, |
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char __user *optval, int __user *optlen) |
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{ struct sock *sk = sock->sk; int error; lock_sock(sk); error = vcc_getsockopt(sock, level, optname, optval, optlen); release_sock(sk); return error; } |
6b6dd498f net/atm/pvc.c: ch... |
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static int pvc_getname(struct socket *sock, struct sockaddr *sockaddr, int *sockaddr_len, int peer) |
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{ struct sockaddr_atmpvc *addr; struct atm_vcc *vcc = ATM_SD(sock); |
6b6dd498f net/atm/pvc.c: ch... |
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if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags)) return -ENOTCONN; |
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*sockaddr_len = sizeof(struct sockaddr_atmpvc); |
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addr = (struct sockaddr_atmpvc *)sockaddr; |
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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; } |
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static const struct proto_ops pvc_proto_ops = { |
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.family = PF_ATMPVC, .owner = THIS_MODULE, .release = vcc_release, .bind = pvc_bind, .connect = pvc_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = pvc_getname, .poll = vcc_poll, .ioctl = vcc_ioctl, |
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#ifdef CONFIG_COMPAT .compat_ioctl = vcc_compat_ioctl, #endif |
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.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, }; |
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static int pvc_create(struct net *net, struct socket *sock, int protocol, int kern) |
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{ |
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if (net != &init_net) return -EAFNOSUPPORT; |
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sock->ops = &pvc_proto_ops; |
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return vcc_create(net, sock, protocol, PF_ATMPVC); |
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} |
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static const struct net_proto_family pvc_family_ops = { |
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.family = PF_ATMPVC, .create = pvc_create, .owner = THIS_MODULE, }; /* * Initialize the ATM PVC protocol family */ int __init atmpvc_init(void) { return sock_register(&pvc_family_ops); } void atmpvc_exit(void) { sock_unregister(PF_ATMPVC); } |