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-rw-r--r--net/irda/af_irda.c2695
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diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
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--- a/net/irda/af_irda.c
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-/*********************************************************************
- *
- * Filename: af_irda.c
- * Version: 0.9
- * Description: IrDA sockets implementation
- * Status: Stable
- * Author: Dag Brattli <dagb@cs.uit.no>
- * Created at: Sun May 31 10:12:43 1998
- * Modified at: Sat Dec 25 21:10:23 1999
- * Modified by: Dag Brattli <dag@brattli.net>
- * Sources: af_netroom.c, af_ax25.c, af_rose.c, af_x25.c etc.
- *
- * Copyright (c) 1999 Dag Brattli <dagb@cs.uit.no>
- * Copyright (c) 1999-2003 Jean Tourrilhes <jt@hpl.hp.com>
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- *
- * Linux-IrDA now supports four different types of IrDA sockets:
- *
- * o SOCK_STREAM: TinyTP connections with SAR disabled. The
- * max SDU size is 0 for conn. of this type
- * o SOCK_SEQPACKET: TinyTP connections with SAR enabled. TTP may
- * fragment the messages, but will preserve
- * the message boundaries
- * o SOCK_DGRAM: IRDAPROTO_UNITDATA: TinyTP connections with Unitdata
- * (unreliable) transfers
- * IRDAPROTO_ULTRA: Connectionless and unreliable data
- *
- ********************************************************************/
-
-#include <linux/capability.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/slab.h>
-#include <linux/sched/signal.h>
-#include <linux/init.h>
-#include <linux/net.h>
-#include <linux/irda.h>
-#include <linux/poll.h>
-
-#include <asm/ioctls.h> /* TIOCOUTQ, TIOCINQ */
-#include <linux/uaccess.h>
-
-#include <net/sock.h>
-#include <net/tcp_states.h>
-
-#include <net/irda/af_irda.h>
-
-static int irda_create(struct net *net, struct socket *sock, int protocol, int kern);
-
-static const struct proto_ops irda_stream_ops;
-static const struct proto_ops irda_seqpacket_ops;
-static const struct proto_ops irda_dgram_ops;
-
-#ifdef CONFIG_IRDA_ULTRA
-static const struct proto_ops irda_ultra_ops;
-#define ULTRA_MAX_DATA 382
-#endif /* CONFIG_IRDA_ULTRA */
-
-#define IRDA_MAX_HEADER (TTP_MAX_HEADER)
-
-/*
- * Function irda_data_indication (instance, sap, skb)
- *
- * Received some data from TinyTP. Just queue it on the receive queue
- *
- */
-static int irda_data_indication(void *instance, void *sap, struct sk_buff *skb)
-{
- struct irda_sock *self;
- struct sock *sk;
- int err;
-
- self = instance;
- sk = instance;
-
- err = sock_queue_rcv_skb(sk, skb);
- if (err) {
- pr_debug("%s(), error: no more mem!\n", __func__);
- self->rx_flow = FLOW_STOP;
-
- /* When we return error, TTP will need to requeue the skb */
- return err;
- }
-
- return 0;
-}
-
-/*
- * Function irda_disconnect_indication (instance, sap, reason, skb)
- *
- * Connection has been closed. Check reason to find out why
- *
- */
-static void irda_disconnect_indication(void *instance, void *sap,
- LM_REASON reason, struct sk_buff *skb)
-{
- struct irda_sock *self;
- struct sock *sk;
-
- self = instance;
-
- pr_debug("%s(%p)\n", __func__, self);
-
- /* Don't care about it, but let's not leak it */
- if(skb)
- dev_kfree_skb(skb);
-
- sk = instance;
- if (sk == NULL) {
- pr_debug("%s(%p) : BUG : sk is NULL\n",
- __func__, self);
- return;
- }
-
- /* Prevent race conditions with irda_release() and irda_shutdown() */
- bh_lock_sock(sk);
- if (!sock_flag(sk, SOCK_DEAD) && sk->sk_state != TCP_CLOSE) {
- sk->sk_state = TCP_CLOSE;
- sk->sk_shutdown |= SEND_SHUTDOWN;
-
- sk->sk_state_change(sk);
-
- /* Close our TSAP.
- * If we leave it open, IrLMP put it back into the list of
- * unconnected LSAPs. The problem is that any incoming request
- * can then be matched to this socket (and it will be, because
- * it is at the head of the list). This would prevent any
- * listening socket waiting on the same TSAP to get those
- * requests. Some apps forget to close sockets, or hang to it
- * a bit too long, so we may stay in this dead state long
- * enough to be noticed...
- * Note : all socket function do check sk->sk_state, so we are
- * safe...
- * Jean II
- */
- if (self->tsap) {
- irttp_close_tsap(self->tsap);
- self->tsap = NULL;
- }
- }
- bh_unlock_sock(sk);
-
- /* Note : once we are there, there is not much you want to do
- * with the socket anymore, apart from closing it.
- * For example, bind() and connect() won't reset sk->sk_err,
- * sk->sk_shutdown and sk->sk_flags to valid values...
- * Jean II
- */
-}
-
-/*
- * Function irda_connect_confirm (instance, sap, qos, max_sdu_size, skb)
- *
- * Connections has been confirmed by the remote device
- *
- */
-static void irda_connect_confirm(void *instance, void *sap,
- struct qos_info *qos,
- __u32 max_sdu_size, __u8 max_header_size,
- struct sk_buff *skb)
-{
- struct irda_sock *self;
- struct sock *sk;
-
- self = instance;
-
- pr_debug("%s(%p)\n", __func__, self);
-
- sk = instance;
- if (sk == NULL) {
- dev_kfree_skb(skb);
- return;
- }
-
- dev_kfree_skb(skb);
- // Should be ??? skb_queue_tail(&sk->sk_receive_queue, skb);
-
- /* How much header space do we need to reserve */
- self->max_header_size = max_header_size;
-
- /* IrTTP max SDU size in transmit direction */
- self->max_sdu_size_tx = max_sdu_size;
-
- /* Find out what the largest chunk of data that we can transmit is */
- switch (sk->sk_type) {
- case SOCK_STREAM:
- if (max_sdu_size != 0) {
- net_err_ratelimited("%s: max_sdu_size must be 0\n",
- __func__);
- return;
- }
- self->max_data_size = irttp_get_max_seg_size(self->tsap);
- break;
- case SOCK_SEQPACKET:
- if (max_sdu_size == 0) {
- net_err_ratelimited("%s: max_sdu_size cannot be 0\n",
- __func__);
- return;
- }
- self->max_data_size = max_sdu_size;
- break;
- default:
- self->max_data_size = irttp_get_max_seg_size(self->tsap);
- }
-
- pr_debug("%s(), max_data_size=%d\n", __func__,
- self->max_data_size);
-
- memcpy(&self->qos_tx, qos, sizeof(struct qos_info));
-
- /* We are now connected! */
- sk->sk_state = TCP_ESTABLISHED;
- sk->sk_state_change(sk);
-}
-
-/*
- * Function irda_connect_indication(instance, sap, qos, max_sdu_size, userdata)
- *
- * Incoming connection
- *
- */
-static void irda_connect_indication(void *instance, void *sap,
- struct qos_info *qos, __u32 max_sdu_size,
- __u8 max_header_size, struct sk_buff *skb)
-{
- struct irda_sock *self;
- struct sock *sk;
-
- self = instance;
-
- pr_debug("%s(%p)\n", __func__, self);
-
- sk = instance;
- if (sk == NULL) {
- dev_kfree_skb(skb);
- return;
- }
-
- /* How much header space do we need to reserve */
- self->max_header_size = max_header_size;
-
- /* IrTTP max SDU size in transmit direction */
- self->max_sdu_size_tx = max_sdu_size;
-
- /* Find out what the largest chunk of data that we can transmit is */
- switch (sk->sk_type) {
- case SOCK_STREAM:
- if (max_sdu_size != 0) {
- net_err_ratelimited("%s: max_sdu_size must be 0\n",
- __func__);
- kfree_skb(skb);
- return;
- }
- self->max_data_size = irttp_get_max_seg_size(self->tsap);
- break;
- case SOCK_SEQPACKET:
- if (max_sdu_size == 0) {
- net_err_ratelimited("%s: max_sdu_size cannot be 0\n",
- __func__);
- kfree_skb(skb);
- return;
- }
- self->max_data_size = max_sdu_size;
- break;
- default:
- self->max_data_size = irttp_get_max_seg_size(self->tsap);
- }
-
- pr_debug("%s(), max_data_size=%d\n", __func__,
- self->max_data_size);
-
- memcpy(&self->qos_tx, qos, sizeof(struct qos_info));
-
- skb_queue_tail(&sk->sk_receive_queue, skb);
- sk->sk_state_change(sk);
-}
-
-/*
- * Function irda_connect_response (handle)
- *
- * Accept incoming connection
- *
- */
-static void irda_connect_response(struct irda_sock *self)
-{
- struct sk_buff *skb;
-
- skb = alloc_skb(TTP_MAX_HEADER + TTP_SAR_HEADER, GFP_KERNEL);
- if (skb == NULL) {
- pr_debug("%s() Unable to allocate sk_buff!\n",
- __func__);
- return;
- }
-
- /* Reserve space for MUX_CONTROL and LAP header */
- skb_reserve(skb, IRDA_MAX_HEADER);
-
- irttp_connect_response(self->tsap, self->max_sdu_size_rx, skb);
-}
-
-/*
- * Function irda_flow_indication (instance, sap, flow)
- *
- * Used by TinyTP to tell us if it can accept more data or not
- *
- */
-static void irda_flow_indication(void *instance, void *sap, LOCAL_FLOW flow)
-{
- struct irda_sock *self;
- struct sock *sk;
-
- self = instance;
- sk = instance;
- BUG_ON(sk == NULL);
-
- switch (flow) {
- case FLOW_STOP:
- pr_debug("%s(), IrTTP wants us to slow down\n",
- __func__);
- self->tx_flow = flow;
- break;
- case FLOW_START:
- self->tx_flow = flow;
- pr_debug("%s(), IrTTP wants us to start again\n",
- __func__);
- wake_up_interruptible(sk_sleep(sk));
- break;
- default:
- pr_debug("%s(), Unknown flow command!\n", __func__);
- /* Unknown flow command, better stop */
- self->tx_flow = flow;
- break;
- }
-}
-
-/*
- * Function irda_getvalue_confirm (obj_id, value, priv)
- *
- * Got answer from remote LM-IAS, just pass object to requester...
- *
- * Note : duplicate from above, but we need our own version that
- * doesn't touch the dtsap_sel and save the full value structure...
- */
-static void irda_getvalue_confirm(int result, __u16 obj_id,
- struct ias_value *value, void *priv)
-{
- struct irda_sock *self;
-
- self = priv;
- if (!self) {
- net_warn_ratelimited("%s: lost myself!\n", __func__);
- return;
- }
-
- pr_debug("%s(%p)\n", __func__, self);
-
- /* We probably don't need to make any more queries */
- iriap_close(self->iriap);
- self->iriap = NULL;
-
- /* Check if request succeeded */
- if (result != IAS_SUCCESS) {
- pr_debug("%s(), IAS query failed! (%d)\n", __func__,
- result);
-
- self->errno = result; /* We really need it later */
-
- /* Wake up any processes waiting for result */
- wake_up_interruptible(&self->query_wait);
-
- return;
- }
-
- /* Pass the object to the caller (so the caller must delete it) */
- self->ias_result = value;
- self->errno = 0;
-
- /* Wake up any processes waiting for result */
- wake_up_interruptible(&self->query_wait);
-}
-
-/*
- * Function irda_selective_discovery_indication (discovery)
- *
- * Got a selective discovery indication from IrLMP.
- *
- * IrLMP is telling us that this node is new and matching our hint bit
- * filter. Wake up any process waiting for answer...
- */
-static void irda_selective_discovery_indication(discinfo_t *discovery,
- DISCOVERY_MODE mode,
- void *priv)
-{
- struct irda_sock *self;
-
- self = priv;
- if (!self) {
- net_warn_ratelimited("%s: lost myself!\n", __func__);
- return;
- }
-
- /* Pass parameter to the caller */
- self->cachedaddr = discovery->daddr;
-
- /* Wake up process if its waiting for device to be discovered */
- wake_up_interruptible(&self->query_wait);
-}
-
-/*
- * Function irda_discovery_timeout (priv)
- *
- * Timeout in the selective discovery process
- *
- * We were waiting for a node to be discovered, but nothing has come up
- * so far. Wake up the user and tell him that we failed...
- */
-static void irda_discovery_timeout(u_long priv)
-{
- struct irda_sock *self;
-
- self = (struct irda_sock *) priv;
- BUG_ON(self == NULL);
-
- /* Nothing for the caller */
- self->cachelog = NULL;
- self->cachedaddr = 0;
- self->errno = -ETIME;
-
- /* Wake up process if its still waiting... */
- wake_up_interruptible(&self->query_wait);
-}
-
-/*
- * Function irda_open_tsap (self)
- *
- * Open local Transport Service Access Point (TSAP)
- *
- */
-static int irda_open_tsap(struct irda_sock *self, __u8 tsap_sel, char *name)
-{
- notify_t notify;
-
- if (self->tsap) {
- pr_debug("%s: busy!\n", __func__);
- return -EBUSY;
- }
-
- /* Initialize callbacks to be used by the IrDA stack */
- irda_notify_init(&notify);
- notify.connect_confirm = irda_connect_confirm;
- notify.connect_indication = irda_connect_indication;
- notify.disconnect_indication = irda_disconnect_indication;
- notify.data_indication = irda_data_indication;
- notify.udata_indication = irda_data_indication;
- notify.flow_indication = irda_flow_indication;
- notify.instance = self;
- strncpy(notify.name, name, NOTIFY_MAX_NAME);
-
- self->tsap = irttp_open_tsap(tsap_sel, DEFAULT_INITIAL_CREDIT,
- &notify);
- if (self->tsap == NULL) {
- pr_debug("%s(), Unable to allocate TSAP!\n",
- __func__);
- return -ENOMEM;
- }
- /* Remember which TSAP selector we actually got */
- self->stsap_sel = self->tsap->stsap_sel;
-
- return 0;
-}
-
-/*
- * Function irda_open_lsap (self)
- *
- * Open local Link Service Access Point (LSAP). Used for opening Ultra
- * sockets
- */
-#ifdef CONFIG_IRDA_ULTRA
-static int irda_open_lsap(struct irda_sock *self, int pid)
-{
- notify_t notify;
-
- if (self->lsap) {
- net_warn_ratelimited("%s(), busy!\n", __func__);
- return -EBUSY;
- }
-
- /* Initialize callbacks to be used by the IrDA stack */
- irda_notify_init(&notify);
- notify.udata_indication = irda_data_indication;
- notify.instance = self;
- strncpy(notify.name, "Ultra", NOTIFY_MAX_NAME);
-
- self->lsap = irlmp_open_lsap(LSAP_CONNLESS, &notify, pid);
- if (self->lsap == NULL) {
- pr_debug("%s(), Unable to allocate LSAP!\n", __func__);
- return -ENOMEM;
- }
-
- return 0;
-}
-#endif /* CONFIG_IRDA_ULTRA */
-
-/*
- * Function irda_find_lsap_sel (self, name)
- *
- * Try to lookup LSAP selector in remote LM-IAS
- *
- * Basically, we start a IAP query, and then go to sleep. When the query
- * return, irda_getvalue_confirm will wake us up, and we can examine the
- * result of the query...
- * Note that in some case, the query fail even before we go to sleep,
- * creating some races...
- */
-static int irda_find_lsap_sel(struct irda_sock *self, char *name)
-{
- pr_debug("%s(%p, %s)\n", __func__, self, name);
-
- if (self->iriap) {
- net_warn_ratelimited("%s(): busy with a previous query\n",
- __func__);
- return -EBUSY;
- }
-
- self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self,
- irda_getvalue_confirm);
- if(self->iriap == NULL)
- return -ENOMEM;
-
- /* Treat unexpected wakeup as disconnect */
- self->errno = -EHOSTUNREACH;
-
- /* Query remote LM-IAS */
- iriap_getvaluebyclass_request(self->iriap, self->saddr, self->daddr,
- name, "IrDA:TinyTP:LsapSel");
-
- /* Wait for answer, if not yet finished (or failed) */
- if (wait_event_interruptible(self->query_wait, (self->iriap==NULL)))
- /* Treat signals as disconnect */
- return -EHOSTUNREACH;
-
- /* Check what happened */
- if (self->errno)
- {
- /* Requested object/attribute doesn't exist */
- if((self->errno == IAS_CLASS_UNKNOWN) ||
- (self->errno == IAS_ATTRIB_UNKNOWN))
- return -EADDRNOTAVAIL;
- else
- return -EHOSTUNREACH;
- }
-
- /* Get the remote TSAP selector */
- switch (self->ias_result->type) {
- case IAS_INTEGER:
- pr_debug("%s() int=%d\n",
- __func__, self->ias_result->t.integer);
-
- if (self->ias_result->t.integer != -1)
- self->dtsap_sel = self->ias_result->t.integer;
- else
- self->dtsap_sel = 0;
- break;
- default:
- self->dtsap_sel = 0;
- pr_debug("%s(), bad type!\n", __func__);
- break;
- }
- if (self->ias_result)
- irias_delete_value(self->ias_result);
-
- if (self->dtsap_sel)
- return 0;
-
- return -EADDRNOTAVAIL;
-}
-
-/*
- * Function irda_discover_daddr_and_lsap_sel (self, name)
- *
- * This try to find a device with the requested service.
- *
- * It basically look into the discovery log. For each address in the list,
- * it queries the LM-IAS of the device to find if this device offer
- * the requested service.
- * If there is more than one node supporting the service, we complain
- * to the user (it should move devices around).
- * The, we set both the destination address and the lsap selector to point
- * on the service on the unique device we have found.
- *
- * Note : this function fails if there is more than one device in range,
- * because IrLMP doesn't disconnect the LAP when the last LSAP is closed.
- * Moreover, we would need to wait the LAP disconnection...
- */
-static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name)
-{
- discinfo_t *discoveries; /* Copy of the discovery log */
- int number; /* Number of nodes in the log */
- int i;
- int err = -ENETUNREACH;
- __u32 daddr = DEV_ADDR_ANY; /* Address we found the service on */
- __u8 dtsap_sel = 0x0; /* TSAP associated with it */
-
- pr_debug("%s(), name=%s\n", __func__, name);
-
- /* Ask lmp for the current discovery log
- * Note : we have to use irlmp_get_discoveries(), as opposed
- * to play with the cachelog directly, because while we are
- * making our ias query, le log might change... */
- discoveries = irlmp_get_discoveries(&number, self->mask.word,
- self->nslots);
- /* Check if the we got some results */
- if (discoveries == NULL)
- return -ENETUNREACH; /* No nodes discovered */
-
- /*
- * Now, check all discovered devices (if any), and connect
- * client only about the services that the client is
- * interested in...
- */
- for(i = 0; i < number; i++) {
- /* Try the address in the log */
- self->daddr = discoveries[i].daddr;
- self->saddr = 0x0;
- pr_debug("%s(), trying daddr = %08x\n",
- __func__, self->daddr);
-
- /* Query remote LM-IAS for this service */
- err = irda_find_lsap_sel(self, name);
- switch (err) {
- case 0:
- /* We found the requested service */
- if(daddr != DEV_ADDR_ANY) {
- pr_debug("%s(), discovered service ''%s'' in two different devices !!!\n",
- __func__, name);
- self->daddr = DEV_ADDR_ANY;
- kfree(discoveries);
- return -ENOTUNIQ;
- }
- /* First time we found that one, save it ! */
- daddr = self->daddr;
- dtsap_sel = self->dtsap_sel;
- break;
- case -EADDRNOTAVAIL:
- /* Requested service simply doesn't exist on this node */
- break;
- default:
- /* Something bad did happen :-( */
- pr_debug("%s(), unexpected IAS query failure\n",
- __func__);
- self->daddr = DEV_ADDR_ANY;
- kfree(discoveries);
- return -EHOSTUNREACH;
- }
- }
- /* Cleanup our copy of the discovery log */
- kfree(discoveries);
-
- /* Check out what we found */
- if(daddr == DEV_ADDR_ANY) {
- pr_debug("%s(), cannot discover service ''%s'' in any device !!!\n",
- __func__, name);
- self->daddr = DEV_ADDR_ANY;
- return -EADDRNOTAVAIL;
- }
-
- /* Revert back to discovered device & service */
- self->daddr = daddr;
- self->saddr = 0x0;
- self->dtsap_sel = dtsap_sel;
-
- pr_debug("%s(), discovered requested service ''%s'' at address %08x\n",
- __func__, name, self->daddr);
-
- return 0;
-}
-
-/*
- * Function irda_getname (sock, uaddr, uaddr_len, peer)
- *
- * Return the our own, or peers socket address (sockaddr_irda)
- *
- */
-static int irda_getname(struct socket *sock, struct sockaddr *uaddr,
- int *uaddr_len, int peer)
-{
- struct sockaddr_irda saddr;
- struct sock *sk = sock->sk;
- struct irda_sock *self = irda_sk(sk);
-
- memset(&saddr, 0, sizeof(saddr));
- if (peer) {
- if (sk->sk_state != TCP_ESTABLISHED)
- return -ENOTCONN;
-
- saddr.sir_family = AF_IRDA;
- saddr.sir_lsap_sel = self->dtsap_sel;
- saddr.sir_addr = self->daddr;
- } else {
- saddr.sir_family = AF_IRDA;
- saddr.sir_lsap_sel = self->stsap_sel;
- saddr.sir_addr = self->saddr;
- }
-
- pr_debug("%s(), tsap_sel = %#x\n", __func__, saddr.sir_lsap_sel);
- pr_debug("%s(), addr = %08x\n", __func__, saddr.sir_addr);
-
- /* uaddr_len come to us uninitialised */
- *uaddr_len = sizeof (struct sockaddr_irda);
- memcpy(uaddr, &saddr, *uaddr_len);
-
- return 0;
-}
-
-/*
- * Function irda_listen (sock, backlog)
- *
- * Just move to the listen state
- *
- */
-static int irda_listen(struct socket *sock, int backlog)
-{
- struct sock *sk = sock->sk;
- int err = -EOPNOTSUPP;
-
- lock_sock(sk);
-
- if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) &&
- (sk->sk_type != SOCK_DGRAM))
- goto out;
-
- if (sk->sk_state != TCP_LISTEN) {
- sk->sk_max_ack_backlog = backlog;
- sk->sk_state = TCP_LISTEN;
-
- err = 0;
- }
-out:
- release_sock(sk);
-
- return err;
-}
-
-/*
- * Function irda_bind (sock, uaddr, addr_len)
- *
- * Used by servers to register their well known TSAP
- *
- */
-static int irda_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
-{
- struct sock *sk = sock->sk;
- struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr;
- struct irda_sock *self = irda_sk(sk);
- int err;
-
- pr_debug("%s(%p)\n", __func__, self);
-
- if (addr_len != sizeof(struct sockaddr_irda))
- return -EINVAL;
-
- lock_sock(sk);
-#ifdef CONFIG_IRDA_ULTRA
- /* Special care for Ultra sockets */
- if ((sk->sk_type == SOCK_DGRAM) &&
- (sk->sk_protocol == IRDAPROTO_ULTRA)) {
- self->pid = addr->sir_lsap_sel;
- err = -EOPNOTSUPP;
- if (self->pid & 0x80) {
- pr_debug("%s(), extension in PID not supp!\n",
- __func__);
- goto out;
- }
- err = irda_open_lsap(self, self->pid);
- if (err < 0)
- goto out;
-
- /* Pretend we are connected */
- sock->state = SS_CONNECTED;
- sk->sk_state = TCP_ESTABLISHED;
- err = 0;
-
- goto out;
- }
-#endif /* CONFIG_IRDA_ULTRA */
-
- self->ias_obj = irias_new_object(addr->sir_name, jiffies);
- err = -ENOMEM;
- if (self->ias_obj == NULL)
- goto out;
-
- err = irda_open_tsap(self, addr->sir_lsap_sel, addr->sir_name);
- if (err < 0) {
- irias_delete_object(self->ias_obj);
- self->ias_obj = NULL;
- goto out;
- }
-
- /* Register with LM-IAS */
- irias_add_integer_attrib(self->ias_obj, "IrDA:TinyTP:LsapSel",
- self->stsap_sel, IAS_KERNEL_ATTR);
- irias_insert_object(self->ias_obj);
-
- err = 0;
-out:
- release_sock(sk);
- return err;
-}
-
-/*
- * Function irda_accept (sock, newsock, flags)
- *
- * Wait for incoming connection
- *
- */
-static int irda_accept(struct socket *sock, struct socket *newsock, int flags,
- bool kern)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *new, *self = irda_sk(sk);
- struct sock *newsk;
- struct sk_buff *skb = NULL;
- int err;
-
- err = irda_create(sock_net(sk), newsock, sk->sk_protocol, kern);
- if (err)
- return err;
-
- err = -EINVAL;
-
- lock_sock(sk);
- if (sock->state != SS_UNCONNECTED)
- goto out;
-
- err = -EOPNOTSUPP;
- if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) &&
- (sk->sk_type != SOCK_DGRAM))
- goto out;
-
- err = -EINVAL;
- if (sk->sk_state != TCP_LISTEN)
- goto out;
-
- /*
- * The read queue this time is holding sockets ready to use
- * hooked into the SABM we saved
- */
-
- /*
- * We can perform the accept only if there is incoming data
- * on the listening socket.
- * So, we will block the caller until we receive any data.
- * If the caller was waiting on select() or poll() before
- * calling us, the data is waiting for us ;-)
- * Jean II
- */
- while (1) {
- skb = skb_dequeue(&sk->sk_receive_queue);
- if (skb)
- break;
-
- /* Non blocking operation */
- err = -EWOULDBLOCK;
- if (flags & O_NONBLOCK)
- goto out;
-
- err = wait_event_interruptible(*(sk_sleep(sk)),
- skb_peek(&sk->sk_receive_queue));
- if (err)
- goto out;
- }
-
- newsk = newsock->sk;
- err = -EIO;
- if (newsk == NULL)
- goto out;
-
- newsk->sk_state = TCP_ESTABLISHED;
-
- new = irda_sk(newsk);
-
- /* Now attach up the new socket */
- new->tsap = irttp_dup(self->tsap, new);
- err = -EPERM; /* value does not seem to make sense. -arnd */
- if (!new->tsap) {
- pr_debug("%s(), dup failed!\n", __func__);
- goto out;
- }
-
- new->stsap_sel = new->tsap->stsap_sel;
- new->dtsap_sel = new->tsap->dtsap_sel;
- new->saddr = irttp_get_saddr(new->tsap);
- new->daddr = irttp_get_daddr(new->tsap);
-
- new->max_sdu_size_tx = self->max_sdu_size_tx;
- new->max_sdu_size_rx = self->max_sdu_size_rx;
- new->max_data_size = self->max_data_size;
- new->max_header_size = self->max_header_size;
-
- memcpy(&new->qos_tx, &self->qos_tx, sizeof(struct qos_info));
-
- /* Clean up the original one to keep it in listen state */
- irttp_listen(self->tsap);
-
- sk->sk_ack_backlog--;
-
- newsock->state = SS_CONNECTED;
-
- irda_connect_response(new);
- err = 0;
-out:
- kfree_skb(skb);
- release_sock(sk);
- return err;
-}
-
-/*
- * Function irda_connect (sock, uaddr, addr_len, flags)
- *
- * Connect to a IrDA device
- *
- * The main difference with a "standard" connect is that with IrDA we need
- * to resolve the service name into a TSAP selector (in TCP, port number
- * doesn't have to be resolved).
- * Because of this service name resolution, we can offer "auto-connect",
- * where we connect to a service without specifying a destination address.
- *
- * Note : by consulting "errno", the user space caller may learn the cause
- * of the failure. Most of them are visible in the function, others may come
- * from subroutines called and are listed here :
- * o EBUSY : already processing a connect
- * o EHOSTUNREACH : bad addr->sir_addr argument
- * o EADDRNOTAVAIL : bad addr->sir_name argument
- * o ENOTUNIQ : more than one node has addr->sir_name (auto-connect)
- * o ENETUNREACH : no node found on the network (auto-connect)
- */
-static int irda_connect(struct socket *sock, struct sockaddr *uaddr,
- int addr_len, int flags)
-{
- struct sock *sk = sock->sk;
- struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr;
- struct irda_sock *self = irda_sk(sk);
- int err;
-
- pr_debug("%s(%p)\n", __func__, self);
-
- lock_sock(sk);
- /* Don't allow connect for Ultra sockets */
- err = -ESOCKTNOSUPPORT;
- if ((sk->sk_type == SOCK_DGRAM) && (sk->sk_protocol == IRDAPROTO_ULTRA))
- goto out;
-
- if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
- sock->state = SS_CONNECTED;
- err = 0;
- goto out; /* Connect completed during a ERESTARTSYS event */
- }
-
- if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
- sock->state = SS_UNCONNECTED;
- err = -ECONNREFUSED;
- goto out;
- }
-
- err = -EISCONN; /* No reconnect on a seqpacket socket */
- if (sk->sk_state == TCP_ESTABLISHED)
- goto out;
-
- sk->sk_state = TCP_CLOSE;
- sock->state = SS_UNCONNECTED;
-
- err = -EINVAL;
- if (addr_len != sizeof(struct sockaddr_irda))
- goto out;
-
- /* Check if user supplied any destination device address */
- if ((!addr->sir_addr) || (addr->sir_addr == DEV_ADDR_ANY)) {
- /* Try to find one suitable */
- err = irda_discover_daddr_and_lsap_sel(self, addr->sir_name);
- if (err) {
- pr_debug("%s(), auto-connect failed!\n", __func__);
- goto out;
- }
- } else {
- /* Use the one provided by the user */
- self->daddr = addr->sir_addr;
- pr_debug("%s(), daddr = %08x\n", __func__, self->daddr);
-
- /* If we don't have a valid service name, we assume the
- * user want to connect on a specific LSAP. Prevent
- * the use of invalid LSAPs (IrLMP 1.1 p10). Jean II */
- if((addr->sir_name[0] != '\0') ||
- (addr->sir_lsap_sel >= 0x70)) {
- /* Query remote LM-IAS using service name */
- err = irda_find_lsap_sel(self, addr->sir_name);
- if (err) {
- pr_debug("%s(), connect failed!\n", __func__);
- goto out;
- }
- } else {
- /* Directly connect to the remote LSAP
- * specified by the sir_lsap field.
- * Please use with caution, in IrDA LSAPs are
- * dynamic and there is no "well-known" LSAP. */
- self->dtsap_sel = addr->sir_lsap_sel;
- }
- }
-
- /* Check if we have opened a local TSAP */
- if (!self->tsap) {
- err = irda_open_tsap(self, LSAP_ANY, addr->sir_name);
- if (err)
- goto out;
- }
-
- /* Move to connecting socket, start sending Connect Requests */
- sock->state = SS_CONNECTING;
- sk->sk_state = TCP_SYN_SENT;
-
- /* Connect to remote device */
- err = irttp_connect_request(self->tsap, self->dtsap_sel,
- self->saddr, self->daddr, NULL,
- self->max_sdu_size_rx, NULL);
- if (err) {
- pr_debug("%s(), connect failed!\n", __func__);
- goto out;
- }
-
- /* Now the loop */
- err = -EINPROGRESS;
- if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
- goto out;
-
- err = -ERESTARTSYS;
- if (wait_event_interruptible(*(sk_sleep(sk)),
- (sk->sk_state != TCP_SYN_SENT)))
- goto out;
-
- if (sk->sk_state != TCP_ESTABLISHED) {
- sock->state = SS_UNCONNECTED;
- err = sock_error(sk);
- if (!err)
- err = -ECONNRESET;
- goto out;
- }
-
- sock->state = SS_CONNECTED;
-
- /* At this point, IrLMP has assigned our source address */
- self->saddr = irttp_get_saddr(self->tsap);
- err = 0;
-out:
- release_sock(sk);
- return err;
-}
-
-static struct proto irda_proto = {
- .name = "IRDA",
- .owner = THIS_MODULE,
- .obj_size = sizeof(struct irda_sock),
-};
-
-/*
- * Function irda_create (sock, protocol)
- *
- * Create IrDA socket
- *
- */
-static int irda_create(struct net *net, struct socket *sock, int protocol,
- int kern)
-{
- struct sock *sk;
- struct irda_sock *self;
-
- if (protocol < 0 || protocol > SK_PROTOCOL_MAX)
- return -EINVAL;
-
- if (net != &init_net)
- return -EAFNOSUPPORT;
-
- /* Check for valid socket type */
- switch (sock->type) {
- case SOCK_STREAM: /* For TTP connections with SAR disabled */
- case SOCK_SEQPACKET: /* For TTP connections with SAR enabled */
- case SOCK_DGRAM: /* For TTP Unitdata or LMP Ultra transfers */
- break;
- default:
- return -ESOCKTNOSUPPORT;
- }
-
- /* Allocate networking socket */
- sk = sk_alloc(net, PF_IRDA, GFP_KERNEL, &irda_proto, kern);
- if (sk == NULL)
- return -ENOMEM;
-
- self = irda_sk(sk);
- pr_debug("%s() : self is %p\n", __func__, self);
-
- init_waitqueue_head(&self->query_wait);
-
- switch (sock->type) {
- case SOCK_STREAM:
- sock->ops = &irda_stream_ops;
- self->max_sdu_size_rx = TTP_SAR_DISABLE;
- break;
- case SOCK_SEQPACKET:
- sock->ops = &irda_seqpacket_ops;
- self->max_sdu_size_rx = TTP_SAR_UNBOUND;
- break;
- case SOCK_DGRAM:
- switch (protocol) {
-#ifdef CONFIG_IRDA_ULTRA
- case IRDAPROTO_ULTRA:
- sock->ops = &irda_ultra_ops;
- /* Initialise now, because we may send on unbound
- * sockets. Jean II */
- self->max_data_size = ULTRA_MAX_DATA - LMP_PID_HEADER;
- self->max_header_size = IRDA_MAX_HEADER + LMP_PID_HEADER;
- break;
-#endif /* CONFIG_IRDA_ULTRA */
- case IRDAPROTO_UNITDATA:
- sock->ops = &irda_dgram_ops;
- /* We let Unitdata conn. be like seqpack conn. */
- self->max_sdu_size_rx = TTP_SAR_UNBOUND;
- break;
- default:
- sk_free(sk);
- return -ESOCKTNOSUPPORT;
- }
- break;
- default:
- sk_free(sk);
- return -ESOCKTNOSUPPORT;
- }
-
- /* Initialise networking socket struct */
- sock_init_data(sock, sk); /* Note : set sk->sk_refcnt to 1 */
- sk->sk_family = PF_IRDA;
- sk->sk_protocol = protocol;
-
- /* Register as a client with IrLMP */
- self->ckey = irlmp_register_client(0, NULL, NULL, NULL);
- self->mask.word = 0xffff;
- self->rx_flow = self->tx_flow = FLOW_START;
- self->nslots = DISCOVERY_DEFAULT_SLOTS;
- self->daddr = DEV_ADDR_ANY; /* Until we get connected */
- self->saddr = 0x0; /* so IrLMP assign us any link */
- return 0;
-}
-
-/*
- * Function irda_destroy_socket (self)
- *
- * Destroy socket
- *
- */
-static void irda_destroy_socket(struct irda_sock *self)
-{
- pr_debug("%s(%p)\n", __func__, self);
-
- /* Unregister with IrLMP */
- irlmp_unregister_client(self->ckey);
- irlmp_unregister_service(self->skey);
-
- /* Unregister with LM-IAS */
- if (self->ias_obj) {
- irias_delete_object(self->ias_obj);
- self->ias_obj = NULL;
- }
-
- if (self->iriap) {
- iriap_close(self->iriap);
- self->iriap = NULL;
- }
-
- if (self->tsap) {
- irttp_disconnect_request(self->tsap, NULL, P_NORMAL);
- irttp_close_tsap(self->tsap);
- self->tsap = NULL;
- }
-#ifdef CONFIG_IRDA_ULTRA
- if (self->lsap) {
- irlmp_close_lsap(self->lsap);
- self->lsap = NULL;
- }
-#endif /* CONFIG_IRDA_ULTRA */
-}
-
-/*
- * Function irda_release (sock)
- */
-static int irda_release(struct socket *sock)
-{
- struct sock *sk = sock->sk;
-
- if (sk == NULL)
- return 0;
-
- lock_sock(sk);
- sk->sk_state = TCP_CLOSE;
- sk->sk_shutdown |= SEND_SHUTDOWN;
- sk->sk_state_change(sk);
-
- /* Destroy IrDA socket */
- irda_destroy_socket(irda_sk(sk));
-
- sock_orphan(sk);
- sock->sk = NULL;
- release_sock(sk);
-
- /* Purge queues (see sock_init_data()) */
- skb_queue_purge(&sk->sk_receive_queue);
-
- /* Destroy networking socket if we are the last reference on it,
- * i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */
- sock_put(sk);
-
- /* Notes on socket locking and deallocation... - Jean II
- * In theory we should put pairs of sock_hold() / sock_put() to
- * prevent the socket to be destroyed whenever there is an
- * outstanding request or outstanding incoming packet or event.
- *
- * 1) This may include IAS request, both in connect and getsockopt.
- * Unfortunately, the situation is a bit more messy than it looks,
- * because we close iriap and kfree(self) above.
- *
- * 2) This may include selective discovery in getsockopt.
- * Same stuff as above, irlmp registration and self are gone.
- *
- * Probably 1 and 2 may not matter, because it's all triggered
- * by a process and the socket layer already prevent the
- * socket to go away while a process is holding it, through
- * sockfd_put() and fput()...
- *
- * 3) This may include deferred TSAP closure. In particular,
- * we may receive a late irda_disconnect_indication()
- * Fortunately, (tsap_cb *)->close_pend should protect us
- * from that.
- *
- * I did some testing on SMP, and it looks solid. And the socket
- * memory leak is now gone... - Jean II
- */
-
- return 0;
-}
-
-/*
- * Function irda_sendmsg (sock, msg, len)
- *
- * Send message down to TinyTP. This function is used for both STREAM and
- * SEQPACK services. This is possible since it forces the client to
- * fragment the message if necessary
- */
-static int irda_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self;
- struct sk_buff *skb;
- int err = -EPIPE;
-
- pr_debug("%s(), len=%zd\n", __func__, len);
-
- /* Note : socket.c set MSG_EOR on SEQPACKET sockets */
- if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_EOR | MSG_CMSG_COMPAT |
- MSG_NOSIGNAL)) {
- return -EINVAL;
- }
-
- lock_sock(sk);
-
- if (sk->sk_shutdown & SEND_SHUTDOWN)
- goto out_err;
-
- if (sk->sk_state != TCP_ESTABLISHED) {
- err = -ENOTCONN;
- goto out;
- }
-
- self = irda_sk(sk);
-
- /* Check if IrTTP is wants us to slow down */
-
- if (wait_event_interruptible(*(sk_sleep(sk)),
- (self->tx_flow != FLOW_STOP || sk->sk_state != TCP_ESTABLISHED))) {
- err = -ERESTARTSYS;
- goto out;
- }
-
- /* Check if we are still connected */
- if (sk->sk_state != TCP_ESTABLISHED) {
- err = -ENOTCONN;
- goto out;
- }
-
- /* Check that we don't send out too big frames */
- if (len > self->max_data_size) {
- pr_debug("%s(), Chopping frame from %zd to %d bytes!\n",
- __func__, len, self->max_data_size);
- len = self->max_data_size;
- }
-
- skb = sock_alloc_send_skb(sk, len + self->max_header_size + 16,
- msg->msg_flags & MSG_DONTWAIT, &err);
- if (!skb)
- goto out_err;
-
- skb_reserve(skb, self->max_header_size + 16);
- skb_reset_transport_header(skb);
- skb_put(skb, len);
- err = memcpy_from_msg(skb_transport_header(skb), msg, len);
- if (err) {
- kfree_skb(skb);
- goto out_err;
- }
-
- /*
- * Just send the message to TinyTP, and let it deal with possible
- * errors. No need to duplicate all that here
- */
- err = irttp_data_request(self->tsap, skb);
- if (err) {
- pr_debug("%s(), err=%d\n", __func__, err);
- goto out_err;
- }
-
- release_sock(sk);
- /* Tell client how much data we actually sent */
- return len;
-
-out_err:
- err = sk_stream_error(sk, msg->msg_flags, err);
-out:
- release_sock(sk);
- return err;
-
-}
-
-/*
- * Function irda_recvmsg_dgram (sock, msg, size, flags)
- *
- * Try to receive message and copy it to user. The frame is discarded
- * after being read, regardless of how much the user actually read
- */
-static int irda_recvmsg_dgram(struct socket *sock, struct msghdr *msg,
- size_t size, int flags)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self = irda_sk(sk);
- struct sk_buff *skb;
- size_t copied;
- int err;
-
- skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
- flags & MSG_DONTWAIT, &err);
- if (!skb)
- return err;
-
- skb_reset_transport_header(skb);
- copied = skb->len;
-
- if (copied > size) {
- pr_debug("%s(), Received truncated frame (%zd < %zd)!\n",
- __func__, copied, size);
- copied = size;
- msg->msg_flags |= MSG_TRUNC;
- }
- skb_copy_datagram_msg(skb, 0, msg, copied);
-
- skb_free_datagram(sk, skb);
-
- /*
- * Check if we have previously stopped IrTTP and we know
- * have more free space in our rx_queue. If so tell IrTTP
- * to start delivering frames again before our rx_queue gets
- * empty
- */
- if (self->rx_flow == FLOW_STOP) {
- if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) {
- pr_debug("%s(), Starting IrTTP\n", __func__);
- self->rx_flow = FLOW_START;
- irttp_flow_request(self->tsap, FLOW_START);
- }
- }
-
- return copied;
-}
-
-/*
- * Function irda_recvmsg_stream (sock, msg, size, flags)
- */
-static int irda_recvmsg_stream(struct socket *sock, struct msghdr *msg,
- size_t size, int flags)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self = irda_sk(sk);
- int noblock = flags & MSG_DONTWAIT;
- size_t copied = 0;
- int target, err;
- long timeo;
-
- if ((err = sock_error(sk)) < 0)
- return err;
-
- if (sock->flags & __SO_ACCEPTCON)
- return -EINVAL;
-
- err =-EOPNOTSUPP;
- if (flags & MSG_OOB)
- return -EOPNOTSUPP;
-
- err = 0;
- target = sock_rcvlowat(sk, flags & MSG_WAITALL, size);
- timeo = sock_rcvtimeo(sk, noblock);
-
- do {
- int chunk;
- struct sk_buff *skb = skb_dequeue(&sk->sk_receive_queue);
-
- if (skb == NULL) {
- DEFINE_WAIT(wait);
- err = 0;
-
- if (copied >= target)
- break;
-
- prepare_to_wait_exclusive(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
-
- /*
- * POSIX 1003.1g mandates this order.
- */
- err = sock_error(sk);
- if (err)
- ;
- else if (sk->sk_shutdown & RCV_SHUTDOWN)
- ;
- else if (noblock)
- err = -EAGAIN;
- else if (signal_pending(current))
- err = sock_intr_errno(timeo);
- else if (sk->sk_state != TCP_ESTABLISHED)
- err = -ENOTCONN;
- else if (skb_peek(&sk->sk_receive_queue) == NULL)
- /* Wait process until data arrives */
- schedule();
-
- finish_wait(sk_sleep(sk), &wait);
-
- if (err)
- return err;
- if (sk->sk_shutdown & RCV_SHUTDOWN)
- break;
-
- continue;
- }
-
- chunk = min_t(unsigned int, skb->len, size);
- if (memcpy_to_msg(msg, skb->data, chunk)) {
- skb_queue_head(&sk->sk_receive_queue, skb);
- if (copied == 0)
- copied = -EFAULT;
- break;
- }
- copied += chunk;
- size -= chunk;
-
- /* Mark read part of skb as used */
- if (!(flags & MSG_PEEK)) {
- skb_pull(skb, chunk);
-
- /* put the skb back if we didn't use it up.. */
- if (skb->len) {
- pr_debug("%s(), back on q!\n",
- __func__);
- skb_queue_head(&sk->sk_receive_queue, skb);
- break;
- }
-
- kfree_skb(skb);
- } else {
- pr_debug("%s() questionable!?\n", __func__);
-
- /* put message back and return */
- skb_queue_head(&sk->sk_receive_queue, skb);
- break;
- }
- } while (size);
-
- /*
- * Check if we have previously stopped IrTTP and we know
- * have more free space in our rx_queue. If so tell IrTTP
- * to start delivering frames again before our rx_queue gets
- * empty
- */
- if (self->rx_flow == FLOW_STOP) {
- if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) {
- pr_debug("%s(), Starting IrTTP\n", __func__);
- self->rx_flow = FLOW_START;
- irttp_flow_request(self->tsap, FLOW_START);
- }
- }
-
- return copied;
-}
-
-/*
- * Function irda_sendmsg_dgram (sock, msg, len)
- *
- * Send message down to TinyTP for the unreliable sequenced
- * packet service...
- *
- */
-static int irda_sendmsg_dgram(struct socket *sock, struct msghdr *msg,
- size_t len)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self;
- struct sk_buff *skb;
- int err;
-
- pr_debug("%s(), len=%zd\n", __func__, len);
-
- if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
- return -EINVAL;
-
- lock_sock(sk);
-
- if (sk->sk_shutdown & SEND_SHUTDOWN) {
- send_sig(SIGPIPE, current, 0);
- err = -EPIPE;
- goto out;
- }
-
- err = -ENOTCONN;
- if (sk->sk_state != TCP_ESTABLISHED)
- goto out;
-
- self = irda_sk(sk);
-
- /*
- * Check that we don't send out too big frames. This is an unreliable
- * service, so we have no fragmentation and no coalescence
- */
- if (len > self->max_data_size) {
- pr_debug("%s(), Warning too much data! Chopping frame from %zd to %d bytes!\n",
- __func__, len, self->max_data_size);
- len = self->max_data_size;
- }
-
- skb = sock_alloc_send_skb(sk, len + self->max_header_size,
- msg->msg_flags & MSG_DONTWAIT, &err);
- err = -ENOBUFS;
- if (!skb)
- goto out;
-
- skb_reserve(skb, self->max_header_size);
- skb_reset_transport_header(skb);
-
- pr_debug("%s(), appending user data\n", __func__);
- skb_put(skb, len);
- err = memcpy_from_msg(skb_transport_header(skb), msg, len);
- if (err) {
- kfree_skb(skb);
- goto out;
- }
-
- /*
- * Just send the message to TinyTP, and let it deal with possible
- * errors. No need to duplicate all that here
- */
- err = irttp_udata_request(self->tsap, skb);
- if (err) {
- pr_debug("%s(), err=%d\n", __func__, err);
- goto out;
- }
-
- release_sock(sk);
- return len;
-
-out:
- release_sock(sk);
- return err;
-}
-
-/*
- * Function irda_sendmsg_ultra (sock, msg, len)
- *
- * Send message down to IrLMP for the unreliable Ultra
- * packet service...
- */
-#ifdef CONFIG_IRDA_ULTRA
-static int irda_sendmsg_ultra(struct socket *sock, struct msghdr *msg,
- size_t len)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self;
- __u8 pid = 0;
- int bound = 0;
- struct sk_buff *skb;
- int err;
-
- pr_debug("%s(), len=%zd\n", __func__, len);
-
- err = -EINVAL;
- if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
- return -EINVAL;
-
- lock_sock(sk);
-
- err = -EPIPE;
- if (sk->sk_shutdown & SEND_SHUTDOWN) {
- send_sig(SIGPIPE, current, 0);
- goto out;
- }
-
- self = irda_sk(sk);
-
- /* Check if an address was specified with sendto. Jean II */
- if (msg->msg_name) {
- DECLARE_SOCKADDR(struct sockaddr_irda *, addr, msg->msg_name);
- err = -EINVAL;
- /* Check address, extract pid. Jean II */
- if (msg->msg_namelen < sizeof(*addr))
- goto out;
- if (addr->sir_family != AF_IRDA)
- goto out;
-
- pid = addr->sir_lsap_sel;
- if (pid & 0x80) {
- pr_debug("%s(), extension in PID not supp!\n",
- __func__);
- err = -EOPNOTSUPP;
- goto out;
- }
- } else {
- /* Check that the socket is properly bound to an Ultra
- * port. Jean II */
- if ((self->lsap == NULL) ||
- (sk->sk_state != TCP_ESTABLISHED)) {
- pr_debug("%s(), socket not bound to Ultra PID.\n",
- __func__);
- err = -ENOTCONN;
- goto out;
- }
- /* Use PID from socket */
- bound = 1;
- }
-
- /*
- * Check that we don't send out too big frames. This is an unreliable
- * service, so we have no fragmentation and no coalescence
- */
- if (len > self->max_data_size) {
- pr_debug("%s(), Warning too much data! Chopping frame from %zd to %d bytes!\n",
- __func__, len, self->max_data_size);
- len = self->max_data_size;
- }
-
- skb = sock_alloc_send_skb(sk, len + self->max_header_size,
- msg->msg_flags & MSG_DONTWAIT, &err);
- err = -ENOBUFS;
- if (!skb)
- goto out;
-
- skb_reserve(skb, self->max_header_size);
- skb_reset_transport_header(skb);
-
- pr_debug("%s(), appending user data\n", __func__);
- skb_put(skb, len);
- err = memcpy_from_msg(skb_transport_header(skb), msg, len);
- if (err) {
- kfree_skb(skb);
- goto out;
- }
-
- err = irlmp_connless_data_request((bound ? self->lsap : NULL),
- skb, pid);
- if (err)
- pr_debug("%s(), err=%d\n", __func__, err);
-out:
- release_sock(sk);
- return err ? : len;
-}
-#endif /* CONFIG_IRDA_ULTRA */
-
-/*
- * Function irda_shutdown (sk, how)
- */
-static int irda_shutdown(struct socket *sock, int how)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self = irda_sk(sk);
-
- pr_debug("%s(%p)\n", __func__, self);
-
- lock_sock(sk);
-
- sk->sk_state = TCP_CLOSE;
- sk->sk_shutdown |= SEND_SHUTDOWN;
- sk->sk_state_change(sk);
-
- if (self->iriap) {
- iriap_close(self->iriap);
- self->iriap = NULL;
- }
-
- if (self->tsap) {
- irttp_disconnect_request(self->tsap, NULL, P_NORMAL);
- irttp_close_tsap(self->tsap);
- self->tsap = NULL;
- }
-
- /* A few cleanup so the socket look as good as new... */
- self->rx_flow = self->tx_flow = FLOW_START; /* needed ??? */
- self->daddr = DEV_ADDR_ANY; /* Until we get re-connected */
- self->saddr = 0x0; /* so IrLMP assign us any link */
-
- release_sock(sk);
-
- return 0;
-}
-
-/*
- * Function irda_poll (file, sock, wait)
- */
-static unsigned int irda_poll(struct file * file, struct socket *sock,
- poll_table *wait)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self = irda_sk(sk);
- unsigned int mask;
-
- poll_wait(file, sk_sleep(sk), wait);
- mask = 0;
-
- /* Exceptional events? */
- if (sk->sk_err)
- mask |= POLLERR;
- if (sk->sk_shutdown & RCV_SHUTDOWN) {
- pr_debug("%s(), POLLHUP\n", __func__);
- mask |= POLLHUP;
- }
-
- /* Readable? */
- if (!skb_queue_empty(&sk->sk_receive_queue)) {
- pr_debug("Socket is readable\n");
- mask |= POLLIN | POLLRDNORM;
- }
-
- /* Connection-based need to check for termination and startup */
- switch (sk->sk_type) {
- case SOCK_STREAM:
- if (sk->sk_state == TCP_CLOSE) {
- pr_debug("%s(), POLLHUP\n", __func__);
- mask |= POLLHUP;
- }
-
- if (sk->sk_state == TCP_ESTABLISHED) {
- if ((self->tx_flow == FLOW_START) &&
- sock_writeable(sk))
- {
- mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
- }
- }
- break;
- case SOCK_SEQPACKET:
- if ((self->tx_flow == FLOW_START) &&
- sock_writeable(sk))
- {
- mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
- }
- break;
- case SOCK_DGRAM:
- if (sock_writeable(sk))
- mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
- break;
- default:
- break;
- }
-
- return mask;
-}
-
-/*
- * Function irda_ioctl (sock, cmd, arg)
- */
-static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
-{
- struct sock *sk = sock->sk;
- int err;
-
- pr_debug("%s(), cmd=%#x\n", __func__, cmd);
-
- err = -EINVAL;
- switch (cmd) {
- case TIOCOUTQ: {
- long amount;
-
- amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
- if (amount < 0)
- amount = 0;
- err = put_user(amount, (unsigned int __user *)arg);
- break;
- }
-
- case TIOCINQ: {
- struct sk_buff *skb;
- long amount = 0L;
- /* These two are safe on a single CPU system as only user tasks fiddle here */
- if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
- amount = skb->len;
- err = put_user(amount, (unsigned int __user *)arg);
- break;
- }
-
- case SIOCGSTAMP:
- if (sk != NULL)
- err = sock_get_timestamp(sk, (struct timeval __user *)arg);
- break;
-
- case SIOCGIFADDR:
- case SIOCSIFADDR:
- case SIOCGIFDSTADDR:
- case SIOCSIFDSTADDR:
- case SIOCGIFBRDADDR:
- case SIOCSIFBRDADDR:
- case SIOCGIFNETMASK:
- case SIOCSIFNETMASK:
- case SIOCGIFMETRIC:
- case SIOCSIFMETRIC:
- break;
- default:
- pr_debug("%s(), doing device ioctl!\n", __func__);
- err = -ENOIOCTLCMD;
- }
-
- return err;
-}
-
-#ifdef CONFIG_COMPAT
-/*
- * Function irda_ioctl (sock, cmd, arg)
- */
-static int irda_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
-{
- /*
- * All IRDA's ioctl are standard ones.
- */
- return -ENOIOCTLCMD;
-}
-#endif
-
-/*
- * Function irda_setsockopt (sock, level, optname, optval, optlen)
- *
- * Set some options for the socket
- *
- */
-static int irda_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self = irda_sk(sk);
- struct irda_ias_set *ias_opt;
- struct ias_object *ias_obj;
- struct ias_attrib * ias_attr; /* Attribute in IAS object */
- int opt, free_ias = 0, err = 0;
-
- pr_debug("%s(%p)\n", __func__, self);
-
- if (level != SOL_IRLMP)
- return -ENOPROTOOPT;
-
- lock_sock(sk);
-
- switch (optname) {
- case IRLMP_IAS_SET:
- /* The user want to add an attribute to an existing IAS object
- * (in the IAS database) or to create a new object with this
- * attribute.
- * We first query IAS to know if the object exist, and then
- * create the right attribute...
- */
-
- if (optlen != sizeof(struct irda_ias_set)) {
- err = -EINVAL;
- goto out;
- }
-
- /* Copy query to the driver. */
- ias_opt = memdup_user(optval, optlen);
- if (IS_ERR(ias_opt)) {
- err = PTR_ERR(ias_opt);
- goto out;
- }
-
- /* Find the object we target.
- * If the user gives us an empty string, we use the object
- * associated with this socket. This will workaround
- * duplicated class name - Jean II */
- if(ias_opt->irda_class_name[0] == '\0') {
- if(self->ias_obj == NULL) {
- kfree(ias_opt);
- err = -EINVAL;
- goto out;
- }
- ias_obj = self->ias_obj;
- } else
- ias_obj = irias_find_object(ias_opt->irda_class_name);
-
- /* Only ROOT can mess with the global IAS database.
- * Users can only add attributes to the object associated
- * with the socket they own - Jean II */
- if((!capable(CAP_NET_ADMIN)) &&
- ((ias_obj == NULL) || (ias_obj != self->ias_obj))) {
- kfree(ias_opt);
- err = -EPERM;
- goto out;
- }
-
- /* If the object doesn't exist, create it */
- if(ias_obj == (struct ias_object *) NULL) {
- /* Create a new object */
- ias_obj = irias_new_object(ias_opt->irda_class_name,
- jiffies);
- if (ias_obj == NULL) {
- kfree(ias_opt);
- err = -ENOMEM;
- goto out;
- }
- free_ias = 1;
- }
-
- /* Do we have the attribute already ? */
- if(irias_find_attrib(ias_obj, ias_opt->irda_attrib_name)) {
- kfree(ias_opt);
- if (free_ias) {
- kfree(ias_obj->name);
- kfree(ias_obj);
- }
- err = -EINVAL;
- goto out;
- }
-
- /* Look at the type */
- switch(ias_opt->irda_attrib_type) {
- case IAS_INTEGER:
- /* Add an integer attribute */
- irias_add_integer_attrib(
- ias_obj,
- ias_opt->irda_attrib_name,
- ias_opt->attribute.irda_attrib_int,
- IAS_USER_ATTR);
- break;
- case IAS_OCT_SEQ:
- /* Check length */
- if(ias_opt->attribute.irda_attrib_octet_seq.len >
- IAS_MAX_OCTET_STRING) {
- kfree(ias_opt);
- if (free_ias) {
- kfree(ias_obj->name);
- kfree(ias_obj);
- }
-
- err = -EINVAL;
- goto out;
- }
- /* Add an octet sequence attribute */
- irias_add_octseq_attrib(
- ias_obj,
- ias_opt->irda_attrib_name,
- ias_opt->attribute.irda_attrib_octet_seq.octet_seq,
- ias_opt->attribute.irda_attrib_octet_seq.len,
- IAS_USER_ATTR);
- break;
- case IAS_STRING:
- /* Should check charset & co */
- /* Check length */
- /* The length is encoded in a __u8, and
- * IAS_MAX_STRING == 256, so there is no way
- * userspace can pass us a string too large.
- * Jean II */
- /* NULL terminate the string (avoid troubles) */
- ias_opt->attribute.irda_attrib_string.string[ias_opt->attribute.irda_attrib_string.len] = '\0';
- /* Add a string attribute */
- irias_add_string_attrib(
- ias_obj,
- ias_opt->irda_attrib_name,
- ias_opt->attribute.irda_attrib_string.string,
- IAS_USER_ATTR);
- break;
- default :
- kfree(ias_opt);
- if (free_ias) {
- kfree(ias_obj->name);
- kfree(ias_obj);
- }
- err = -EINVAL;
- goto out;
- }
- irias_insert_object(ias_obj);
- kfree(ias_opt);
- break;
- case IRLMP_IAS_DEL:
- /* The user want to delete an object from our local IAS
- * database. We just need to query the IAS, check is the
- * object is not owned by the kernel and delete it.
- */
-
- if (optlen != sizeof(struct irda_ias_set)) {
- err = -EINVAL;
- goto out;
- }
-
- /* Copy query to the driver. */
- ias_opt = memdup_user(optval, optlen);
- if (IS_ERR(ias_opt)) {
- err = PTR_ERR(ias_opt);
- goto out;
- }
-
- /* Find the object we target.
- * If the user gives us an empty string, we use the object
- * associated with this socket. This will workaround
- * duplicated class name - Jean II */
- if(ias_opt->irda_class_name[0] == '\0')
- ias_obj = self->ias_obj;
- else
- ias_obj = irias_find_object(ias_opt->irda_class_name);
- if(ias_obj == (struct ias_object *) NULL) {
- kfree(ias_opt);
- err = -EINVAL;
- goto out;
- }
-
- /* Only ROOT can mess with the global IAS database.
- * Users can only del attributes from the object associated
- * with the socket they own - Jean II */
- if((!capable(CAP_NET_ADMIN)) &&
- ((ias_obj == NULL) || (ias_obj != self->ias_obj))) {
- kfree(ias_opt);
- err = -EPERM;
- goto out;
- }
-
- /* Find the attribute (in the object) we target */
- ias_attr = irias_find_attrib(ias_obj,
- ias_opt->irda_attrib_name);
- if(ias_attr == (struct ias_attrib *) NULL) {
- kfree(ias_opt);
- err = -EINVAL;
- goto out;
- }
-
- /* Check is the user space own the object */
- if(ias_attr->value->owner != IAS_USER_ATTR) {
- pr_debug("%s(), attempting to delete a kernel attribute\n",
- __func__);
- kfree(ias_opt);
- err = -EPERM;
- goto out;
- }
-
- /* Remove the attribute (and maybe the object) */
- irias_delete_attrib(ias_obj, ias_attr, 1);
- kfree(ias_opt);
- break;
- case IRLMP_MAX_SDU_SIZE:
- if (optlen < sizeof(int)) {
- err = -EINVAL;
- goto out;
- }
-
- if (get_user(opt, (int __user *)optval)) {
- err = -EFAULT;
- goto out;
- }
-
- /* Only possible for a seqpacket service (TTP with SAR) */
- if (sk->sk_type != SOCK_SEQPACKET) {
- pr_debug("%s(), setting max_sdu_size = %d\n",
- __func__, opt);
- self->max_sdu_size_rx = opt;
- } else {
- net_warn_ratelimited("%s: not allowed to set MAXSDUSIZE for this socket type!\n",
- __func__);
- err = -ENOPROTOOPT;
- goto out;
- }
- break;
- case IRLMP_HINTS_SET:
- if (optlen < sizeof(int)) {
- err = -EINVAL;
- goto out;
- }
-
- /* The input is really a (__u8 hints[2]), easier as an int */
- if (get_user(opt, (int __user *)optval)) {
- err = -EFAULT;
- goto out;
- }
-
- /* Unregister any old registration */
- irlmp_unregister_service(self->skey);
-
- self->skey = irlmp_register_service((__u16) opt);
- break;
- case IRLMP_HINT_MASK_SET:
- /* As opposed to the previous case which set the hint bits
- * that we advertise, this one set the filter we use when
- * making a discovery (nodes which don't match any hint
- * bit in the mask are not reported).
- */
- if (optlen < sizeof(int)) {
- err = -EINVAL;
- goto out;
- }
-
- /* The input is really a (__u8 hints[2]), easier as an int */
- if (get_user(opt, (int __user *)optval)) {
- err = -EFAULT;
- goto out;
- }
-
- /* Set the new hint mask */
- self->mask.word = (__u16) opt;
- /* Mask out extension bits */
- self->mask.word &= 0x7f7f;
- /* Check if no bits */
- if(!self->mask.word)
- self->mask.word = 0xFFFF;
-
- break;
- default:
- err = -ENOPROTOOPT;
- break;
- }
-
-out:
- release_sock(sk);
-
- return err;
-}
-
-/*
- * Function irda_extract_ias_value(ias_opt, ias_value)
- *
- * Translate internal IAS value structure to the user space representation
- *
- * The external representation of IAS values, as we exchange them with
- * user space program is quite different from the internal representation,
- * as stored in the IAS database (because we need a flat structure for
- * crossing kernel boundary).
- * This function transform the former in the latter. We also check
- * that the value type is valid.
- */
-static int irda_extract_ias_value(struct irda_ias_set *ias_opt,
- struct ias_value *ias_value)
-{
- /* Look at the type */
- switch (ias_value->type) {
- case IAS_INTEGER:
- /* Copy the integer */
- ias_opt->attribute.irda_attrib_int = ias_value->t.integer;
- break;
- case IAS_OCT_SEQ:
- /* Set length */
- ias_opt->attribute.irda_attrib_octet_seq.len = ias_value->len;
- /* Copy over */
- memcpy(ias_opt->attribute.irda_attrib_octet_seq.octet_seq,
- ias_value->t.oct_seq, ias_value->len);
- break;
- case IAS_STRING:
- /* Set length */
- ias_opt->attribute.irda_attrib_string.len = ias_value->len;
- ias_opt->attribute.irda_attrib_string.charset = ias_value->charset;
- /* Copy over */
- memcpy(ias_opt->attribute.irda_attrib_string.string,
- ias_value->t.string, ias_value->len);
- /* NULL terminate the string (avoid troubles) */
- ias_opt->attribute.irda_attrib_string.string[ias_value->len] = '\0';
- break;
- case IAS_MISSING:
- default :
- return -EINVAL;
- }
-
- /* Copy type over */
- ias_opt->irda_attrib_type = ias_value->type;
-
- return 0;
-}
-
-/*
- * Function irda_getsockopt (sock, level, optname, optval, optlen)
- */
-static int irda_getsockopt(struct socket *sock, int level, int optname,
- char __user *optval, int __user *optlen)
-{
- struct sock *sk = sock->sk;
- struct irda_sock *self = irda_sk(sk);
- struct irda_device_list list = { 0 };
- struct irda_device_info *discoveries;
- struct irda_ias_set * ias_opt; /* IAS get/query params */
- struct ias_object * ias_obj; /* Object in IAS */
- struct ias_attrib * ias_attr; /* Attribute in IAS object */
- int daddr = DEV_ADDR_ANY; /* Dest address for IAS queries */
- int val = 0;
- int len = 0;
- int err = 0;
- int offset, total;
-
- pr_debug("%s(%p)\n", __func__, self);
-
- if (level != SOL_IRLMP)
- return -ENOPROTOOPT;
-
- if (get_user(len, optlen))
- return -EFAULT;
-
- if(len < 0)
- return -EINVAL;
-
- lock_sock(sk);
-
- switch (optname) {
- case IRLMP_ENUMDEVICES:
-
- /* Offset to first device entry */
- offset = sizeof(struct irda_device_list) -
- sizeof(struct irda_device_info);
-
- if (len < offset) {
- err = -EINVAL;
- goto out;
- }
-
- /* Ask lmp for the current discovery log */
- discoveries = irlmp_get_discoveries(&list.len, self->mask.word,
- self->nslots);
- /* Check if the we got some results */
- if (discoveries == NULL) {
- err = -EAGAIN;
- goto out; /* Didn't find any devices */
- }
-
- /* Write total list length back to client */
- if (copy_to_user(optval, &list, offset))
- err = -EFAULT;
-
- /* Copy the list itself - watch for overflow */
- if (list.len > 2048) {
- err = -EINVAL;
- goto bed;
- }
- total = offset + (list.len * sizeof(struct irda_device_info));
- if (total > len)
- total = len;
- if (copy_to_user(optval+offset, discoveries, total - offset))
- err = -EFAULT;
-
- /* Write total number of bytes used back to client */
- if (put_user(total, optlen))
- err = -EFAULT;
-bed:
- /* Free up our buffer */
- kfree(discoveries);
- break;
- case IRLMP_MAX_SDU_SIZE:
- val = self->max_data_size;
- len = sizeof(int);
- if (put_user(len, optlen)) {
- err = -EFAULT;
- goto out;
- }
-
- if (copy_to_user(optval, &val, len)) {
- err = -EFAULT;
- goto out;
- }
-
- break;
- case IRLMP_IAS_GET:
- /* The user want an object from our local IAS database.
- * We just need to query the IAS and return the value
- * that we found */
-
- /* Check that the user has allocated the right space for us */
- if (len != sizeof(struct irda_ias_set)) {
- err = -EINVAL;
- goto out;
- }
-
- /* Copy query to the driver. */
- ias_opt = memdup_user(optval, len);
- if (IS_ERR(ias_opt)) {
- err = PTR_ERR(ias_opt);
- goto out;
- }
-
- /* Find the object we target.
- * If the user gives us an empty string, we use the object
- * associated with this socket. This will workaround
- * duplicated class name - Jean II */
- if(ias_opt->irda_class_name[0] == '\0')
- ias_obj = self->ias_obj;
- else
- ias_obj = irias_find_object(ias_opt->irda_class_name);
- if(ias_obj == (struct ias_object *) NULL) {
- kfree(ias_opt);
- err = -EINVAL;
- goto out;
- }
-
- /* Find the attribute (in the object) we target */
- ias_attr = irias_find_attrib(ias_obj,
- ias_opt->irda_attrib_name);
- if(ias_attr == (struct ias_attrib *) NULL) {
- kfree(ias_opt);
- err = -EINVAL;
- goto out;
- }
-
- /* Translate from internal to user structure */
- err = irda_extract_ias_value(ias_opt, ias_attr->value);
- if(err) {
- kfree(ias_opt);
- goto out;
- }
-
- /* Copy reply to the user */
- if (copy_to_user(optval, ias_opt,
- sizeof(struct irda_ias_set))) {
- kfree(ias_opt);
- err = -EFAULT;
- goto out;
- }
- /* Note : don't need to put optlen, we checked it */
- kfree(ias_opt);
- break;
- case IRLMP_IAS_QUERY:
- /* The user want an object from a remote IAS database.
- * We need to use IAP to query the remote database and
- * then wait for the answer to come back. */
-
- /* Check that the user has allocated the right space for us */
- if (len != sizeof(struct irda_ias_set)) {
- err = -EINVAL;
- goto out;
- }
-
- /* Copy query to the driver. */
- ias_opt = memdup_user(optval, len);
- if (IS_ERR(ias_opt)) {
- err = PTR_ERR(ias_opt);
- goto out;
- }
-
- /* At this point, there are two cases...
- * 1) the socket is connected - that's the easy case, we
- * just query the device we are connected to...
- * 2) the socket is not connected - the user doesn't want
- * to connect and/or may not have a valid service name
- * (so can't create a fake connection). In this case,
- * we assume that the user pass us a valid destination
- * address in the requesting structure...
- */
- if(self->daddr != DEV_ADDR_ANY) {
- /* We are connected - reuse known daddr */
- daddr = self->daddr;
- } else {
- /* We are not connected, we must specify a valid
- * destination address */
- daddr = ias_opt->daddr;
- if((!daddr) || (daddr == DEV_ADDR_ANY)) {
- kfree(ias_opt);
- err = -EINVAL;
- goto out;
- }
- }
-
- /* Check that we can proceed with IAP */
- if (self->iriap) {
- net_warn_ratelimited("%s: busy with a previous query\n",
- __func__);
- kfree(ias_opt);
- err = -EBUSY;
- goto out;
- }
-
- self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self,
- irda_getvalue_confirm);
-
- if (self->iriap == NULL) {
- kfree(ias_opt);
- err = -ENOMEM;
- goto out;
- }
-
- /* Treat unexpected wakeup as disconnect */
- self->errno = -EHOSTUNREACH;
-
- /* Query remote LM-IAS */
- iriap_getvaluebyclass_request(self->iriap,
- self->saddr, daddr,
- ias_opt->irda_class_name,
- ias_opt->irda_attrib_name);
-
- /* Wait for answer, if not yet finished (or failed) */
- if (wait_event_interruptible(self->query_wait,
- (self->iriap == NULL))) {
- /* pending request uses copy of ias_opt-content
- * we can free it regardless! */
- kfree(ias_opt);
- /* Treat signals as disconnect */
- err = -EHOSTUNREACH;
- goto out;
- }
-
- /* Check what happened */
- if (self->errno)
- {
- kfree(ias_opt);
- /* Requested object/attribute doesn't exist */
- if((self->errno == IAS_CLASS_UNKNOWN) ||
- (self->errno == IAS_ATTRIB_UNKNOWN))
- err = -EADDRNOTAVAIL;
- else
- err = -EHOSTUNREACH;
-
- goto out;
- }
-
- /* Translate from internal to user structure */
- err = irda_extract_ias_value(ias_opt, self->ias_result);
- if (self->ias_result)
- irias_delete_value(self->ias_result);
- if (err) {
- kfree(ias_opt);
- goto out;
- }
-
- /* Copy reply to the user */
- if (copy_to_user(optval, ias_opt,
- sizeof(struct irda_ias_set))) {
- kfree(ias_opt);
- err = -EFAULT;
- goto out;
- }
- /* Note : don't need to put optlen, we checked it */
- kfree(ias_opt);
- break;
- case IRLMP_WAITDEVICE:
- /* This function is just another way of seeing life ;-)
- * IRLMP_ENUMDEVICES assumes that you have a static network,
- * and that you just want to pick one of the devices present.
- * On the other hand, in here we assume that no device is
- * present and that at some point in the future a device will
- * come into range. When this device arrive, we just wake
- * up the caller, so that he has time to connect to it before
- * the device goes away...
- * Note : once the node has been discovered for more than a
- * few second, it won't trigger this function, unless it
- * goes away and come back changes its hint bits (so we
- * might call it IRLMP_WAITNEWDEVICE).
- */
-
- /* Check that the user is passing us an int */
- if (len != sizeof(int)) {
- err = -EINVAL;
- goto out;
- }
- /* Get timeout in ms (max time we block the caller) */
- if (get_user(val, (int __user *)optval)) {
- err = -EFAULT;
- goto out;
- }
-
- /* Tell IrLMP we want to be notified */
- irlmp_update_client(self->ckey, self->mask.word,
- irda_selective_discovery_indication,
- NULL, (void *) self);
-
- /* Do some discovery (and also return cached results) */
- irlmp_discovery_request(self->nslots);
-
- /* Wait until a node is discovered */
- if (!self->cachedaddr) {
- pr_debug("%s(), nothing discovered yet, going to sleep...\n",
- __func__);
-
- /* Set watchdog timer to expire in <val> ms. */
- self->errno = 0;
- setup_timer(&self->watchdog, irda_discovery_timeout,
- (unsigned long)self);
- mod_timer(&self->watchdog,
- jiffies + msecs_to_jiffies(val));
-
- /* Wait for IR-LMP to call us back */
- err = __wait_event_interruptible(self->query_wait,
- (self->cachedaddr != 0 || self->errno == -ETIME));
-
- /* If watchdog is still activated, kill it! */
- del_timer(&(self->watchdog));
-
- pr_debug("%s(), ...waking up !\n", __func__);
-
- if (err != 0)
- goto out;
- }
- else
- pr_debug("%s(), found immediately !\n",
- __func__);
-
- /* Tell IrLMP that we have been notified */
- irlmp_update_client(self->ckey, self->mask.word,
- NULL, NULL, NULL);
-
- /* Check if the we got some results */
- if (!self->cachedaddr) {
- err = -EAGAIN; /* Didn't find any devices */
- goto out;
- }
- daddr = self->cachedaddr;
- /* Cleanup */
- self->cachedaddr = 0;
-
- /* We return the daddr of the device that trigger the
- * wakeup. As irlmp pass us only the new devices, we
- * are sure that it's not an old device.
- * If the user want more details, he should query
- * the whole discovery log and pick one device...
- */
- if (put_user(daddr, (int __user *)optval)) {
- err = -EFAULT;
- goto out;
- }
-
- break;
- default:
- err = -ENOPROTOOPT;
- }
-
-out:
-
- release_sock(sk);
-
- return err;
-}
-
-static const struct net_proto_family irda_family_ops = {
- .family = PF_IRDA,
- .create = irda_create,
- .owner = THIS_MODULE,
-};
-
-static const struct proto_ops irda_stream_ops = {
- .family = PF_IRDA,
- .owner = THIS_MODULE,
- .release = irda_release,
- .bind = irda_bind,
- .connect = irda_connect,
- .socketpair = sock_no_socketpair,
- .accept = irda_accept,
- .getname = irda_getname,
- .poll = irda_poll,
- .ioctl = irda_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = irda_compat_ioctl,
-#endif
- .listen = irda_listen,
- .shutdown = irda_shutdown,
- .setsockopt = irda_setsockopt,
- .getsockopt = irda_getsockopt,
- .sendmsg = irda_sendmsg,
- .recvmsg = irda_recvmsg_stream,
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
-};
-
-static const struct proto_ops irda_seqpacket_ops = {
- .family = PF_IRDA,
- .owner = THIS_MODULE,
- .release = irda_release,
- .bind = irda_bind,
- .connect = irda_connect,
- .socketpair = sock_no_socketpair,
- .accept = irda_accept,
- .getname = irda_getname,
- .poll = datagram_poll,
- .ioctl = irda_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = irda_compat_ioctl,
-#endif
- .listen = irda_listen,
- .shutdown = irda_shutdown,
- .setsockopt = irda_setsockopt,
- .getsockopt = irda_getsockopt,
- .sendmsg = irda_sendmsg,
- .recvmsg = irda_recvmsg_dgram,
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
-};
-
-static const struct proto_ops irda_dgram_ops = {
- .family = PF_IRDA,
- .owner = THIS_MODULE,
- .release = irda_release,
- .bind = irda_bind,
- .connect = irda_connect,
- .socketpair = sock_no_socketpair,
- .accept = irda_accept,
- .getname = irda_getname,
- .poll = datagram_poll,
- .ioctl = irda_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = irda_compat_ioctl,
-#endif
- .listen = irda_listen,
- .shutdown = irda_shutdown,
- .setsockopt = irda_setsockopt,
- .getsockopt = irda_getsockopt,
- .sendmsg = irda_sendmsg_dgram,
- .recvmsg = irda_recvmsg_dgram,
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
-};
-
-#ifdef CONFIG_IRDA_ULTRA
-static const struct proto_ops irda_ultra_ops = {
- .family = PF_IRDA,
- .owner = THIS_MODULE,
- .release = irda_release,
- .bind = irda_bind,
- .connect = sock_no_connect,
- .socketpair = sock_no_socketpair,
- .accept = sock_no_accept,
- .getname = irda_getname,
- .poll = datagram_poll,
- .ioctl = irda_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = irda_compat_ioctl,
-#endif
- .listen = sock_no_listen,
- .shutdown = irda_shutdown,
- .setsockopt = irda_setsockopt,
- .getsockopt = irda_getsockopt,
- .sendmsg = irda_sendmsg_ultra,
- .recvmsg = irda_recvmsg_dgram,
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
-};
-#endif /* CONFIG_IRDA_ULTRA */
-
-/*
- * Function irsock_init (pro)
- *
- * Initialize IrDA protocol
- *
- */
-int __init irsock_init(void)
-{
- int rc = proto_register(&irda_proto, 0);
-
- if (rc == 0)
- rc = sock_register(&irda_family_ops);
-
- return rc;
-}
-
-/*
- * Function irsock_cleanup (void)
- *
- * Remove IrDA protocol
- *
- */
-void irsock_cleanup(void)
-{
- sock_unregister(PF_IRDA);
- proto_unregister(&irda_proto);
-}