/* net/atm/common.c - ATM sockets (common part for PVC and SVC) */ /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ #include #include #include #include /* struct socket, struct net_proto, struct proto_ops */ #include /* ATM stuff */ #include #include /* CLIP_*ENCAP */ #include /* manifest constants */ #include /* for ioctls */ #include /* SOL_SOCKET */ #include /* error codes */ #include #include /* verify_area */ #include #include /* struct timeval */ #include #include #include #include /* struct sock */ #include #include #include #include #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) #include #include "lec.h" #include "lec_arpc.h" struct atm_lane_ops *atm_lane_ops; static DECLARE_MUTEX(atm_lane_ops_mutex); void atm_lane_ops_set(struct atm_lane_ops *hook) { down(&atm_lane_ops_mutex); atm_lane_ops = hook; up(&atm_lane_ops_mutex); } int try_atm_lane_ops(void) { down(&atm_lane_ops_mutex); if (atm_lane_ops && try_inc_mod_count(atm_lane_ops->owner)) { up(&atm_lane_ops_mutex); return 1; } up(&atm_lane_ops_mutex); return 0; } #if defined(CONFIG_ATM_LANE_MODULE) || defined(CONFIG_ATM_MPOA_MODULE) EXPORT_SYMBOL(atm_lane_ops); EXPORT_SYMBOL(try_atm_lane_ops); EXPORT_SYMBOL(atm_lane_ops_set); #endif #endif #if defined(CONFIG_ATM_MPOA) || defined(CONFIG_ATM_MPOA_MODULE) #include #include "mpc.h" struct atm_mpoa_ops *atm_mpoa_ops; static DECLARE_MUTEX(atm_mpoa_ops_mutex); void atm_mpoa_ops_set(struct atm_mpoa_ops *hook) { down(&atm_mpoa_ops_mutex); atm_mpoa_ops = hook; up(&atm_mpoa_ops_mutex); } int try_atm_mpoa_ops(void) { down(&atm_mpoa_ops_mutex); if (atm_mpoa_ops && try_inc_mod_count(atm_mpoa_ops->owner)) { up(&atm_mpoa_ops_mutex); return 1; } up(&atm_mpoa_ops_mutex); return 0; } #ifdef CONFIG_ATM_MPOA_MODULE EXPORT_SYMBOL(atm_mpoa_ops); EXPORT_SYMBOL(try_atm_mpoa_ops); EXPORT_SYMBOL(atm_mpoa_ops_set); #endif #endif #if defined(CONFIG_ATM_TCP) || defined(CONFIG_ATM_TCP_MODULE) #include #ifdef CONFIG_ATM_TCP_MODULE struct atm_tcp_ops atm_tcp_ops; EXPORT_SYMBOL(atm_tcp_ops); #endif #endif #if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE) #include struct atm_clip_ops *atm_clip_ops; static DECLARE_MUTEX(atm_clip_ops_mutex); void atm_clip_ops_set(struct atm_clip_ops *hook) { down(&atm_clip_ops_mutex); atm_clip_ops = hook; up(&atm_clip_ops_mutex); } int try_atm_clip_ops(void) { down(&atm_clip_ops_mutex); if (atm_clip_ops && try_inc_mod_count(atm_clip_ops->owner)) { up(&atm_clip_ops_mutex); return 1; } up(&atm_clip_ops_mutex); return 0; } #ifdef CONFIG_ATM_CLIP_MODULE EXPORT_SYMBOL(atm_clip_ops); EXPORT_SYMBOL(try_atm_clip_ops); EXPORT_SYMBOL(atm_clip_ops_set); #endif #endif #if defined(CONFIG_PPPOATM) || defined(CONFIG_PPPOATM_MODULE) static DECLARE_MUTEX(pppoatm_ioctl_mutex); static int (*pppoatm_ioctl_hook)(struct atm_vcc *, unsigned int, unsigned long); void pppoatm_ioctl_set(int (*hook)(struct atm_vcc *, unsigned int, unsigned long)) { down(&pppoatm_ioctl_mutex); pppoatm_ioctl_hook = hook; up(&pppoatm_ioctl_mutex); } #ifdef CONFIG_PPPOATM_MODULE EXPORT_SYMBOL(pppoatm_ioctl_set); #endif #endif #if defined(CONFIG_ATM_BR2684) || defined(CONFIG_ATM_BR2684_MODULE) static DECLARE_MUTEX(br2684_ioctl_mutex); static int (*br2684_ioctl_hook)(struct atm_vcc *, unsigned int, unsigned long); void br2684_ioctl_set(int (*hook)(struct atm_vcc *, unsigned int, unsigned long)) { down(&br2684_ioctl_mutex); br2684_ioctl_hook = hook; up(&br2684_ioctl_mutex); } #ifdef CONFIG_ATM_BR2684_MODULE EXPORT_SYMBOL(br2684_ioctl_set); #endif #endif #include "resources.h" /* atm_find_dev */ #include "common.h" /* prototypes */ #include "protocols.h" /* atm_init_ */ #include "addr.h" /* address registry */ #ifdef CONFIG_ATM_CLIP #include /* for clip_create */ #endif #include "signaling.h" /* for WAITING and sigd_attach */ #if 0 #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args) #else #define DPRINTK(format,args...) #endif struct sock *vcc_sklist; rwlock_t vcc_sklist_lock = RW_LOCK_UNLOCKED; void __vcc_insert_socket(struct sock *sk) { sk->next = vcc_sklist; if (sk->next) vcc_sklist->pprev = &sk->next; vcc_sklist = sk; sk->pprev = &vcc_sklist; } void vcc_insert_socket(struct sock *sk) { write_lock_irq(&vcc_sklist_lock); __vcc_insert_socket(sk); write_unlock_irq(&vcc_sklist_lock); } void vcc_remove_socket(struct sock *sk) { write_lock_irq(&vcc_sklist_lock); if (sk->pprev) { if (sk->next) sk->next->pprev = sk->pprev; *sk->pprev = sk->next; sk->pprev = NULL; } write_unlock_irq(&vcc_sklist_lock); } static struct sk_buff *alloc_tx(struct atm_vcc *vcc,unsigned int size) { struct sk_buff *skb; if (atomic_read(&vcc->sk->wmem_alloc) && !atm_may_send(vcc,size)) { DPRINTK("Sorry: wmem_alloc = %d, size = %d, sndbuf = %d\n", atomic_read(&vcc->sk->wmem_alloc),size,vcc->sk->sndbuf); return NULL; } while (!(skb = alloc_skb(size,GFP_KERNEL))) schedule(); DPRINTK("AlTx %d += %d\n",atomic_read(&vcc->sk->wmem_alloc),skb->truesize); atomic_add(skb->truesize, &vcc->sk->wmem_alloc); return skb; } EXPORT_SYMBOL(vcc_sklist); EXPORT_SYMBOL(vcc_sklist_lock); EXPORT_SYMBOL(vcc_insert_socket); EXPORT_SYMBOL(vcc_remove_socket); static void vcc_sock_destruct(struct sock *sk) { struct atm_vcc *vcc = sk->protinfo.af_atm; if (atomic_read(&vcc->sk->rmem_alloc)) printk(KERN_DEBUG "vcc_sock_destruct: rmem leakage (%d bytes) detected.\n", atomic_read(&sk->rmem_alloc)); if (atomic_read(&vcc->sk->wmem_alloc)) printk(KERN_DEBUG "vcc_sock_destruct: wmem leakage (%d bytes) detected.\n", atomic_read(&sk->wmem_alloc)); kfree(sk->protinfo.af_atm); MOD_DEC_USE_COUNT; } int vcc_create(struct socket *sock, int protocol, int family) { struct sock *sk; struct atm_vcc *vcc; sock->sk = NULL; if (sock->type == SOCK_STREAM) return -EINVAL; sk = sk_alloc(family, GFP_KERNEL, 1); if (!sk) return -ENOMEM; sock_init_data(NULL, sk); vcc = sk->protinfo.af_atm = kmalloc(sizeof(*vcc), GFP_KERNEL); if (!vcc) { sk_free(sk); return -ENOMEM; } memset(vcc, 0, sizeof(*vcc)); vcc->sk = sk; vcc->dev = NULL; vcc->callback = NULL; memset(&vcc->local,0,sizeof(struct sockaddr_atmsvc)); memset(&vcc->remote,0,sizeof(struct sockaddr_atmsvc)); vcc->qos.txtp.max_sdu = 1 << 16; /* for meta VCs */ atomic_set(&vcc->sk->wmem_alloc,0); atomic_set(&vcc->sk->rmem_alloc,0); vcc->push = NULL; vcc->pop = NULL; vcc->push_oam = NULL; vcc->vpi = vcc->vci = 0; /* no VCI/VPI yet */ vcc->atm_options = vcc->aal_options = 0; init_waitqueue_head(&vcc->sleep); sk->sleep = &vcc->sleep; sk->destruct = vcc_sock_destruct; sock->sk = sk; MOD_INC_USE_COUNT; return 0; } static void vcc_destroy_socket(struct sock *sk) { struct atm_vcc *vcc; struct sk_buff *skb; vcc = sk->protinfo.af_atm; clear_bit(ATM_VF_READY, &vcc->flags); if (vcc->dev) { if (vcc->dev->ops->close) vcc->dev->ops->close(vcc); if (vcc->push) vcc->push(vcc, NULL); /* atmarpd has no push */ vcc_remove_socket(sk); /* no more receive */ while ((skb = skb_dequeue(&vcc->sk->receive_queue))) { atm_return(vcc,skb->truesize); kfree_skb(skb); } if (vcc->dev->ops->owner) __MOD_DEC_USE_COUNT(vcc->dev->ops->owner); atm_dev_put(vcc->dev); } } int vcc_release(struct socket *sock) { struct sock *sk = sock->sk; if (sk) { lock_sock(sk); vcc_destroy_socket(sock->sk); release_sock(sk); sock_put(sk); } return 0; } void vcc_release_async(struct atm_vcc *vcc, int reply) { set_bit(ATM_VF_CLOSE, &vcc->flags); vcc->reply = reply; vcc->sk->err = -reply; wake_up(&vcc->sleep); } EXPORT_SYMBOL(vcc_release_async); static int adjust_tp(struct atm_trafprm *tp,unsigned char aal) { int max_sdu; if (!tp->traffic_class) return 0; switch (aal) { case ATM_AAL0: max_sdu = ATM_CELL_SIZE-1; break; case ATM_AAL34: max_sdu = ATM_MAX_AAL34_PDU; break; default: printk(KERN_WARNING "ATM: AAL problems ... " "(%d)\n",aal); /* fall through */ case ATM_AAL5: max_sdu = ATM_MAX_AAL5_PDU; } if (!tp->max_sdu) tp->max_sdu = max_sdu; else if (tp->max_sdu > max_sdu) return -EINVAL; if (!tp->max_cdv) tp->max_cdv = ATM_MAX_CDV; return 0; } static int __vcc_connect(struct atm_vcc *vcc, struct atm_dev *dev, int vpi, int vci) { int error; if ((vpi != ATM_VPI_UNSPEC && vpi != ATM_VPI_ANY && vpi >> dev->ci_range.vpi_bits) || (vci != ATM_VCI_UNSPEC && vci != ATM_VCI_ANY && vci >> dev->ci_range.vci_bits)) return -EINVAL; if (vci > 0 && vci < ATM_NOT_RSV_VCI && !capable(CAP_NET_BIND_SERVICE)) return -EPERM; error = 0; if (!try_inc_mod_count(dev->ops->owner)) return -ENODEV; vcc->dev = dev; vcc_insert_socket(vcc->sk); switch (vcc->qos.aal) { case ATM_AAL0: error = atm_init_aal0(vcc); vcc->stats = &dev->stats.aal0; break; case ATM_AAL34: error = atm_init_aal34(vcc); vcc->stats = &dev->stats.aal34; break; case ATM_NO_AAL: /* ATM_AAL5 is also used in the "0 for default" case */ vcc->qos.aal = ATM_AAL5; /* fall through */ case ATM_AAL5: error = atm_init_aal5(vcc); vcc->stats = &dev->stats.aal5; break; default: error = -EPROTOTYPE; } if (!error) error = adjust_tp(&vcc->qos.txtp,vcc->qos.aal); if (!error) error = adjust_tp(&vcc->qos.rxtp,vcc->qos.aal); if (error) goto fail; DPRINTK("VCC %d.%d, AAL %d\n",vpi,vci,vcc->qos.aal); DPRINTK(" TX: %d, PCR %d..%d, SDU %d\n",vcc->qos.txtp.traffic_class, vcc->qos.txtp.min_pcr,vcc->qos.txtp.max_pcr,vcc->qos.txtp.max_sdu); DPRINTK(" RX: %d, PCR %d..%d, SDU %d\n",vcc->qos.rxtp.traffic_class, vcc->qos.rxtp.min_pcr,vcc->qos.rxtp.max_pcr,vcc->qos.rxtp.max_sdu); if (dev->ops->open) { if ((error = dev->ops->open(vcc,vpi,vci))) goto fail; } return 0; fail: vcc_remove_socket(vcc->sk); if (dev->ops->owner) __MOD_DEC_USE_COUNT(dev->ops->owner); /* ensure we get dev module ref count correct */ vcc->dev = NULL; return error; } int vcc_connect(struct socket *sock, int itf, short vpi, int vci) { struct atm_dev *dev; struct atm_vcc *vcc = ATM_SD(sock); int error; DPRINTK("vcc_connect (vpi %d, vci %d)\n",vpi,vci); if (sock->state == SS_CONNECTED) return -EISCONN; if (sock->state != SS_UNCONNECTED) return -EINVAL; if (!(vpi || vci)) return -EINVAL; if (vpi != ATM_VPI_UNSPEC && vci != ATM_VCI_UNSPEC) clear_bit(ATM_VF_PARTIAL,&vcc->flags); else if (test_bit(ATM_VF_PARTIAL,&vcc->flags)) return -EINVAL; DPRINTK("vcc_connect (TX: cl %d,bw %d-%d,sdu %d; " "RX: cl %d,bw %d-%d,sdu %d,AAL %s%d)\n", vcc->qos.txtp.traffic_class,vcc->qos.txtp.min_pcr, vcc->qos.txtp.max_pcr,vcc->qos.txtp.max_sdu, vcc->qos.rxtp.traffic_class,vcc->qos.rxtp.min_pcr, vcc->qos.rxtp.max_pcr,vcc->qos.rxtp.max_sdu, vcc->qos.aal == ATM_AAL5 ? "" : vcc->qos.aal == ATM_AAL0 ? "" : " ??? code ",vcc->qos.aal == ATM_AAL0 ? 0 : vcc->qos.aal); if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) return -EBADFD; if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS || vcc->qos.rxtp.traffic_class == ATM_ANYCLASS) return -EINVAL; if (itf != ATM_ITF_ANY) { dev = atm_dev_lookup(itf); if (!dev) return -ENODEV; error = __vcc_connect(vcc, dev, vpi, vci); if (error) { atm_dev_put(dev); return error; } } else { struct list_head *p, *next; dev = NULL; spin_lock(&atm_dev_lock); list_for_each_safe(p, next, &atm_devs) { dev = list_entry(p, struct atm_dev, dev_list); atm_dev_hold(dev); spin_unlock(&atm_dev_lock); if (!__vcc_connect(vcc, dev, vpi, vci)) break; atm_dev_put(dev); dev = NULL; spin_lock(&atm_dev_lock); } spin_unlock(&atm_dev_lock); if (!dev) return -ENODEV; } if (vpi == ATM_VPI_UNSPEC || vci == ATM_VCI_UNSPEC) set_bit(ATM_VF_PARTIAL,&vcc->flags); if (test_bit(ATM_VF_READY,&ATM_SD(sock)->flags)) sock->state = SS_CONNECTED; return 0; } int vcc_recvmsg(struct socket *sock, struct msghdr *msg, int size, int flags, struct scm_cookie *scm) { struct sock *sk = sock->sk; struct atm_vcc *vcc; struct sk_buff *skb; int copied, error = -EINVAL; if (sock->state != SS_CONNECTED) return -ENOTCONN; if (flags & ~MSG_DONTWAIT) /* only handle MSG_DONTWAIT */ return -EOPNOTSUPP; vcc = ATM_SD(sock); if (test_bit(ATM_VF_RELEASED,&vcc->flags) || test_bit(ATM_VF_CLOSE, &vcc->flags) || !test_bit(ATM_VF_READY, &vcc->flags)) return 0; skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &error); if (!skb) return error; copied = skb->len; if (copied > size) { copied = size; msg->msg_flags |= MSG_TRUNC; } error = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); if (error) return error; sock_recv_timestamp(msg, sk, skb); if (vcc->dev->ops->feedback) vcc->dev->ops->feedback(vcc, skb, (unsigned long) skb->data, (unsigned long) msg->msg_iov->iov_base, copied); DPRINTK("RcvM %d -= %d\n", atomic_read(&vcc->sk->rmem_alloc), skb->truesize); atm_return(vcc, skb->truesize); skb_free_datagram(sk, skb); return copied; } int vcc_sendmsg(struct socket *sock, struct msghdr *m, int total_len, struct scm_cookie *scm) { struct sock *sk = sock->sk; DECLARE_WAITQUEUE(wait,current); struct atm_vcc *vcc; struct sk_buff *skb; int eff,error; const void *buff; int size; lock_sock(sk); if (sock->state != SS_CONNECTED) { error = -ENOTCONN; goto out; } if (m->msg_name) { error = -EISCONN; goto out; } if (m->msg_iovlen != 1) { error = -ENOSYS; /* fix this later @@@ */ goto out; } buff = m->msg_iov->iov_base; size = m->msg_iov->iov_len; vcc = ATM_SD(sock); if (test_bit(ATM_VF_RELEASED, &vcc->flags) || test_bit(ATM_VF_CLOSE, &vcc->flags) || !test_bit(ATM_VF_READY, &vcc->flags)) { error = -EPIPE; send_sig(SIGPIPE, current, 0); goto out; } if (!size) { error = 0; goto out; } if (size < 0 || size > vcc->qos.txtp.max_sdu) { error = -EMSGSIZE; goto out; } /* verify_area is done by net/socket.c */ eff = (size+3) & ~3; /* align to word boundary */ add_wait_queue(&vcc->sleep,&wait); set_current_state(TASK_INTERRUPTIBLE); error = 0; while (!(skb = alloc_tx(vcc,eff))) { if (m->msg_flags & MSG_DONTWAIT) { error = -EAGAIN; break; } schedule(); set_current_state(TASK_INTERRUPTIBLE); if (signal_pending(current)) { error = -ERESTARTSYS; break; } if (test_bit(ATM_VF_RELEASED,&vcc->flags) || test_bit(ATM_VF_CLOSE, &vcc->flags) || !test_bit(ATM_VF_READY, &vcc->flags)) { error = -EPIPE; send_sig(SIGPIPE, current, 0); break; } } set_current_state(TASK_RUNNING); remove_wait_queue(&vcc->sleep,&wait); if (error) goto out; skb->dev = NULL; /* for paths shared with net_device interfaces */ ATM_SKB(skb)->atm_options = vcc->atm_options; if (copy_from_user(skb_put(skb,size),buff,size)) { kfree_skb(skb); error = -EFAULT; goto out; } if (eff != size) memset(skb->data+size,0,eff-size); error = vcc->dev->ops->send(vcc,skb); error = error ? error : size; out: release_sock(sk); return error; } unsigned int atm_poll(struct file *file,struct socket *sock,poll_table *wait) { struct atm_vcc *vcc; unsigned int mask; vcc = ATM_SD(sock); poll_wait(file,&vcc->sleep,wait); mask = 0; if (skb_peek(&vcc->sk->receive_queue)) mask |= POLLIN | POLLRDNORM; if (test_bit(ATM_VF_RELEASED,&vcc->flags) || test_bit(ATM_VF_CLOSE,&vcc->flags)) mask |= POLLHUP; if (sock->state != SS_CONNECTING) { if (vcc->qos.txtp.traffic_class != ATM_NONE && vcc->qos.txtp.max_sdu+atomic_read(&vcc->sk->wmem_alloc) <= vcc->sk->sndbuf) mask |= POLLOUT | POLLWRNORM; } else if (vcc->reply != WAITING) { mask |= POLLOUT | POLLWRNORM; if (vcc->reply) mask |= POLLERR; } return mask; } int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { struct atm_vcc *vcc; int error; vcc = ATM_SD(sock); switch (cmd) { case SIOCOUTQ: if (sock->state != SS_CONNECTED || !test_bit(ATM_VF_READY, &vcc->flags)) { error = -EINVAL; goto done; } error = put_user(vcc->sk->sndbuf- atomic_read(&vcc->sk->wmem_alloc), (int *) arg) ? -EFAULT : 0; goto done; case SIOCINQ: { struct sk_buff *skb; if (sock->state != SS_CONNECTED) { error = -EINVAL; goto done; } skb = skb_peek(&vcc->sk->receive_queue); error = put_user(skb ? skb->len : 0, (int *) arg) ? -EFAULT : 0; goto done; } case SIOCGSTAMP: /* borrowed from IP */ if (!vcc->sk->stamp.tv_sec) { error = -ENOENT; goto done; } error = copy_to_user((void *) arg, &vcc->sk->stamp, sizeof(struct timeval)) ? -EFAULT : 0; goto done; case ATM_SETSC: printk(KERN_WARNING "ATM_SETSC is obsolete\n"); error = 0; goto done; case ATMSIGD_CTRL: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } /* * The user/kernel protocol for exchanging signalling * info uses kernel pointers as opaque references, * so the holder of the file descriptor can scribble * on the kernel... so we should make sure that we * have the same privledges that /proc/kcore needs */ if (!capable(CAP_SYS_RAWIO)) { error = -EPERM; goto done; } error = sigd_attach(vcc); if (!error) sock->state = SS_CONNECTED; goto done; #if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE) case SIOCMKCLIP: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (try_atm_clip_ops()) { error = atm_clip_ops->clip_create(arg); if (atm_clip_ops->owner) __MOD_DEC_USE_COUNT(atm_clip_ops->owner); } else error = -ENOSYS; goto done; case ATMARPD_CTRL: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } #if defined(CONFIG_ATM_CLIP_MODULE) if (!atm_clip_ops) request_module("clip"); #endif if (try_atm_clip_ops()) { error = atm_clip_ops->atm_init_atmarp(vcc); if (atm_clip_ops->owner) __MOD_DEC_USE_COUNT(atm_clip_ops->owner); if (!error) sock->state = SS_CONNECTED; } else error = -ENOSYS; goto done; case ATMARP_MKIP: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (try_atm_clip_ops()) { error = atm_clip_ops->clip_mkip(vcc, arg); if (atm_clip_ops->owner) __MOD_DEC_USE_COUNT(atm_clip_ops->owner); } else error = -ENOSYS; goto done; case ATMARP_SETENTRY: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (try_atm_clip_ops()) { error = atm_clip_ops->clip_setentry(vcc, arg); if (atm_clip_ops->owner) __MOD_DEC_USE_COUNT(atm_clip_ops->owner); } else error = -ENOSYS; goto done; case ATMARP_ENCAP: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (try_atm_clip_ops()) { error = atm_clip_ops->clip_encap(vcc, arg); if (atm_clip_ops->owner) __MOD_DEC_USE_COUNT(atm_clip_ops->owner); } else error = -ENOSYS; goto done; #endif #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) case ATMLEC_CTRL: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } #if defined(CONFIG_ATM_LANE_MODULE) if (!atm_lane_ops) request_module("lec"); #endif if (try_atm_lane_ops()) { error = atm_lane_ops->lecd_attach(vcc, (int) arg); if (atm_lane_ops->owner) __MOD_DEC_USE_COUNT(atm_lane_ops->owner); if (error >= 0) sock->state = SS_CONNECTED; } else error = -ENOSYS; goto done; case ATMLEC_MCAST: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (try_atm_lane_ops()) { error = atm_lane_ops->mcast_attach(vcc, (int) arg); if (atm_lane_ops->owner) __MOD_DEC_USE_COUNT(atm_lane_ops->owner); } else error = -ENOSYS; goto done; case ATMLEC_DATA: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (try_atm_lane_ops()) { error = atm_lane_ops->vcc_attach(vcc, (void *) arg); if (atm_lane_ops->owner) __MOD_DEC_USE_COUNT(atm_lane_ops->owner); } else error = -ENOSYS; goto done; #endif #if defined(CONFIG_ATM_MPOA) || defined(CONFIG_ATM_MPOA_MODULE) case ATMMPC_CTRL: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } #if defined(CONFIG_ATM_MPOA_MODULE) if (!atm_mpoa_ops) request_module("mpoa"); #endif if (try_atm_mpoa_ops()) { error = atm_mpoa_ops->mpoad_attach(vcc, (int) arg); if (atm_mpoa_ops->owner) __MOD_DEC_USE_COUNT(atm_mpoa_ops->owner); if (error >= 0) sock->state = SS_CONNECTED; } else error = -ENOSYS; goto done; case ATMMPC_DATA: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (try_atm_mpoa_ops()) { error = atm_mpoa_ops->vcc_attach(vcc, arg); if (atm_mpoa_ops->owner) __MOD_DEC_USE_COUNT(atm_mpoa_ops->owner); } else error = -ENOSYS; goto done; #endif #if defined(CONFIG_ATM_TCP) || defined(CONFIG_ATM_TCP_MODULE) case SIOCSIFATMTCP: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (!atm_tcp_ops.attach) { error = -ENOPKG; goto done; } fops_get(&atm_tcp_ops); error = atm_tcp_ops.attach(vcc, (int) arg); if (error >= 0) sock->state = SS_CONNECTED; else fops_put(&atm_tcp_ops); goto done; case ATMTCP_CREATE: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (!atm_tcp_ops.create_persistent) { error = -ENOPKG; goto done; } error = atm_tcp_ops.create_persistent((int) arg); if (error < 0) fops_put(&atm_tcp_ops); goto done; case ATMTCP_REMOVE: if (!capable(CAP_NET_ADMIN)) { error = -EPERM; goto done; } if (!atm_tcp_ops.remove_persistent) { error = -ENOPKG; goto done; } error = atm_tcp_ops.remove_persistent((int) arg); fops_put(&atm_tcp_ops); goto done; #endif default: break; } error = -ENOIOCTLCMD; #if defined(CONFIG_PPPOATM) || defined(CONFIG_PPPOATM_MODULE) down(&pppoatm_ioctl_mutex); if (pppoatm_ioctl_hook) error = pppoatm_ioctl_hook(vcc, cmd, arg); up(&pppoatm_ioctl_mutex); if (error != -ENOIOCTLCMD) goto done; #endif #if defined(CONFIG_ATM_BR2684) || defined(CONFIG_ATM_BR2684_MODULE) down(&br2684_ioctl_mutex); if (br2684_ioctl_hook) error = br2684_ioctl_hook(vcc, cmd, arg); up(&br2684_ioctl_mutex); if (error != -ENOIOCTLCMD) goto done; #endif error = atm_dev_ioctl(cmd, arg); done: return error; } static int atm_change_qos(struct atm_vcc *vcc,struct atm_qos *qos) { int error; /* * Don't let the QoS change the already connected AAL type nor the * traffic class. */ if (qos->aal != vcc->qos.aal || qos->rxtp.traffic_class != vcc->qos.rxtp.traffic_class || qos->txtp.traffic_class != vcc->qos.txtp.traffic_class) return -EINVAL; error = adjust_tp(&qos->txtp,qos->aal); if (!error) error = adjust_tp(&qos->rxtp,qos->aal); if (error) return error; if (!vcc->dev->ops->change_qos) return -EOPNOTSUPP; if (vcc->sk->family == AF_ATMPVC) return vcc->dev->ops->change_qos(vcc,qos,ATM_MF_SET); return svc_change_qos(vcc,qos); } static int check_tp(struct atm_trafprm *tp) { /* @@@ Should be merged with adjust_tp */ if (!tp->traffic_class || tp->traffic_class == ATM_ANYCLASS) return 0; if (tp->traffic_class != ATM_UBR && !tp->min_pcr && !tp->pcr && !tp->max_pcr) return -EINVAL; if (tp->min_pcr == ATM_MAX_PCR) return -EINVAL; if (tp->min_pcr && tp->max_pcr && tp->max_pcr != ATM_MAX_PCR && tp->min_pcr > tp->max_pcr) return -EINVAL; /* * We allow pcr to be outside [min_pcr,max_pcr], because later * adjustment may still push it in the valid range. */ return 0; } static int check_qos(struct atm_qos *qos) { int error; if (!qos->txtp.traffic_class && !qos->rxtp.traffic_class) return -EINVAL; if (qos->txtp.traffic_class != qos->rxtp.traffic_class && qos->txtp.traffic_class && qos->rxtp.traffic_class && qos->txtp.traffic_class != ATM_ANYCLASS && qos->rxtp.traffic_class != ATM_ANYCLASS) return -EINVAL; error = check_tp(&qos->txtp); if (error) return error; return check_tp(&qos->rxtp); } int vcc_setsockopt(struct socket *sock, int level, int optname, char *optval, int optlen) { struct atm_vcc *vcc; unsigned long value; int error; if (__SO_LEVEL_MATCH(optname, level) && optlen != __SO_SIZE(optname)) return -EINVAL; vcc = ATM_SD(sock); switch (optname) { case SO_ATMQOS: { struct atm_qos qos; if (copy_from_user(&qos,optval,sizeof(qos))) return -EFAULT; error = check_qos(&qos); if (error) return error; if (sock->state == SS_CONNECTED) return atm_change_qos(vcc,&qos); if (sock->state != SS_UNCONNECTED) return -EBADFD; vcc->qos = qos; set_bit(ATM_VF_HASQOS,&vcc->flags); return 0; } case SO_SETCLP: if (get_user(value,(unsigned long *) optval)) return -EFAULT; if (value) vcc->atm_options |= ATM_ATMOPT_CLP; else vcc->atm_options &= ~ATM_ATMOPT_CLP; return 0; default: if (level == SOL_SOCKET) return -EINVAL; break; } if (!vcc->dev || !vcc->dev->ops->setsockopt) return -EINVAL; return vcc->dev->ops->setsockopt(vcc,level,optname,optval,optlen); } int vcc_getsockopt(struct socket *sock, int level, int optname, char *optval, int *optlen) { struct atm_vcc *vcc; int len; if (get_user(len, optlen)) return -EFAULT; if (__SO_LEVEL_MATCH(optname, level) && len != __SO_SIZE(optname)) return -EINVAL; vcc = ATM_SD(sock); switch (optname) { case SO_ATMQOS: if (!test_bit(ATM_VF_HASQOS,&vcc->flags)) return -EINVAL; return copy_to_user(optval,&vcc->qos,sizeof(vcc->qos)) ? -EFAULT : 0; case SO_SETCLP: return put_user(vcc->atm_options & ATM_ATMOPT_CLP ? 1 : 0,(unsigned long *) optval) ? -EFAULT : 0; case SO_ATMPVC: { struct sockaddr_atmpvc pvc; if (!vcc->dev || !test_bit(ATM_VF_ADDR,&vcc->flags)) return -ENOTCONN; pvc.sap_family = AF_ATMPVC; pvc.sap_addr.itf = vcc->dev->number; pvc.sap_addr.vpi = vcc->vpi; pvc.sap_addr.vci = vcc->vci; return copy_to_user(optval,&pvc,sizeof(pvc)) ? -EFAULT : 0; } default: if (level == SOL_SOCKET) return -EINVAL; break; } if (!vcc->dev || !vcc->dev->ops->getsockopt) return -EINVAL; return vcc->dev->ops->getsockopt(vcc, level, optname, optval, len); } #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, unsigned char *addr) = NULL; void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) = NULL; #if defined(CONFIG_ATM_LANE_MODULE) || defined(CONFIG_BRIDGE_MODULE) EXPORT_SYMBOL(br_fdb_get_hook); EXPORT_SYMBOL(br_fdb_put_hook); #endif /* defined(CONFIG_ATM_LANE_MODULE) || defined(CONFIG_BRIDGE_MODULE) */ #endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */ #endif /* defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) */ static int __init atm_init(void) { int error; if ((error = atmpvc_init()) < 0) { printk(KERN_ERR "atmpvc_init() failed with %d\n", error); goto failure; } if ((error = atmsvc_init()) < 0) { printk(KERN_ERR "atmsvc_init() failed with %d\n", error); goto failure; } #ifdef CONFIG_PROC_FS if ((error = atm_proc_init()) < 0) { printk(KERN_ERR "atm_proc_init() failed with %d\n",error); goto failure; } #endif return 0; failure: atmsvc_exit(); atmpvc_exit(); return error; } static void __exit atm_exit(void) { #ifdef CONFIG_PROC_FS atm_proc_exit(); #endif atmsvc_exit(); atmpvc_exit(); } module_init(atm_init); module_exit(atm_exit); MODULE_LICENSE("GPL");