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![Jan Engelhardt](/assets/img/avatar_default.png)
String literals are constant, and usually, we can also tag the array of pointers const too, moving it to the .rodata section. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: David S. Miller <davem@davemloft.net>
1093 lines
26 KiB
C
1093 lines
26 KiB
C
/*********************************************************************
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*
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* Filename: iriap.c
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* Version: 0.8
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* Description: Information Access Protocol (IAP)
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* Status: Experimental.
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* Author: Dag Brattli <dagb@cs.uit.no>
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* Created at: Thu Aug 21 00:02:07 1997
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* Modified at: Sat Dec 25 16:42:42 1999
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* Modified by: Dag Brattli <dagb@cs.uit.no>
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*
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* Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
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* All Rights Reserved.
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* Copyright (c) 2000-2003 Jean Tourrilhes <jt@hpl.hp.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* Neither Dag Brattli nor University of Tromsø admit liability nor
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* provide warranty for any of this software. This material is
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* provided "AS-IS" and at no charge.
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*
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********************************************************************/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/skbuff.h>
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#include <linux/fs.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/seq_file.h>
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#include <asm/byteorder.h>
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#include <asm/unaligned.h>
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#include <net/irda/irda.h>
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#include <net/irda/irttp.h>
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#include <net/irda/irlmp.h>
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#include <net/irda/irias_object.h>
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#include <net/irda/iriap_event.h>
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#include <net/irda/iriap.h>
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#ifdef CONFIG_IRDA_DEBUG
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/* FIXME: This one should go in irlmp.c */
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static const char *const ias_charset_types[] = {
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"CS_ASCII",
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"CS_ISO_8859_1",
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"CS_ISO_8859_2",
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"CS_ISO_8859_3",
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"CS_ISO_8859_4",
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"CS_ISO_8859_5",
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"CS_ISO_8859_6",
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"CS_ISO_8859_7",
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"CS_ISO_8859_8",
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"CS_ISO_8859_9",
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"CS_UNICODE"
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};
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#endif /* CONFIG_IRDA_DEBUG */
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static hashbin_t *iriap = NULL;
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static void *service_handle;
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static void __iriap_close(struct iriap_cb *self);
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static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode);
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static void iriap_disconnect_indication(void *instance, void *sap,
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LM_REASON reason, struct sk_buff *skb);
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static void iriap_connect_indication(void *instance, void *sap,
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struct qos_info *qos, __u32 max_sdu_size,
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__u8 max_header_size,
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struct sk_buff *skb);
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static void iriap_connect_confirm(void *instance, void *sap,
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struct qos_info *qos,
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__u32 max_sdu_size, __u8 max_header_size,
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struct sk_buff *skb);
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static int iriap_data_indication(void *instance, void *sap,
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struct sk_buff *skb);
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static void iriap_watchdog_timer_expired(void *data);
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static inline void iriap_start_watchdog_timer(struct iriap_cb *self,
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int timeout)
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{
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irda_start_timer(&self->watchdog_timer, timeout, self,
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iriap_watchdog_timer_expired);
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}
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/*
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* Function iriap_init (void)
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*
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* Initializes the IrIAP layer, called by the module initialization code
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* in irmod.c
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*/
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int __init iriap_init(void)
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{
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struct ias_object *obj;
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struct iriap_cb *server;
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__u8 oct_seq[6];
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__u16 hints;
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/* Allocate master array */
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iriap = hashbin_new(HB_LOCK);
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if (!iriap)
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return -ENOMEM;
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/* Object repository - defined in irias_object.c */
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irias_objects = hashbin_new(HB_LOCK);
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if (!irias_objects) {
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IRDA_WARNING("%s: Can't allocate irias_objects hashbin!\n",
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__func__);
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hashbin_delete(iriap, NULL);
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return -ENOMEM;
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}
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/*
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* Register some default services for IrLMP
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*/
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hints = irlmp_service_to_hint(S_COMPUTER);
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service_handle = irlmp_register_service(hints);
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/* Register the Device object with LM-IAS */
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obj = irias_new_object("Device", IAS_DEVICE_ID);
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irias_add_string_attrib(obj, "DeviceName", "Linux", IAS_KERNEL_ATTR);
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oct_seq[0] = 0x01; /* Version 1 */
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oct_seq[1] = 0x00; /* IAS support bits */
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oct_seq[2] = 0x00; /* LM-MUX support bits */
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#ifdef CONFIG_IRDA_ULTRA
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oct_seq[2] |= 0x04; /* Connectionless Data support */
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#endif
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irias_add_octseq_attrib(obj, "IrLMPSupport", oct_seq, 3,
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IAS_KERNEL_ATTR);
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irias_insert_object(obj);
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/*
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* Register server support with IrLMP so we can accept incoming
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* connections
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*/
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server = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
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if (!server) {
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IRDA_DEBUG(0, "%s(), unable to open server\n", __func__);
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return -1;
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}
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iriap_register_lsap(server, LSAP_IAS, IAS_SERVER);
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return 0;
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}
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/*
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* Function iriap_cleanup (void)
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*
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* Initializes the IrIAP layer, called by the module cleanup code in
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* irmod.c
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*/
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void iriap_cleanup(void)
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{
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irlmp_unregister_service(service_handle);
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hashbin_delete(iriap, (FREE_FUNC) __iriap_close);
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hashbin_delete(irias_objects, (FREE_FUNC) __irias_delete_object);
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}
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/*
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* Function iriap_open (void)
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*
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* Opens an instance of the IrIAP layer, and registers with IrLMP
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*/
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struct iriap_cb *iriap_open(__u8 slsap_sel, int mode, void *priv,
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CONFIRM_CALLBACK callback)
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{
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struct iriap_cb *self;
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IRDA_DEBUG(2, "%s()\n", __func__);
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self = kzalloc(sizeof(*self), GFP_ATOMIC);
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if (!self) {
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IRDA_WARNING("%s: Unable to kmalloc!\n", __func__);
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return NULL;
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}
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/*
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* Initialize instance
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*/
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self->magic = IAS_MAGIC;
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self->mode = mode;
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if (mode == IAS_CLIENT)
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iriap_register_lsap(self, slsap_sel, mode);
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self->confirm = callback;
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self->priv = priv;
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/* iriap_getvaluebyclass_request() will construct packets before
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* we connect, so this must have a sane value... Jean II */
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self->max_header_size = LMP_MAX_HEADER;
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init_timer(&self->watchdog_timer);
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hashbin_insert(iriap, (irda_queue_t *) self, (long) self, NULL);
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/* Initialize state machines */
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iriap_next_client_state(self, S_DISCONNECT);
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iriap_next_call_state(self, S_MAKE_CALL);
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iriap_next_server_state(self, R_DISCONNECT);
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iriap_next_r_connect_state(self, R_WAITING);
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return self;
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}
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EXPORT_SYMBOL(iriap_open);
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/*
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* Function __iriap_close (self)
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*
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* Removes (deallocates) the IrIAP instance
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*
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*/
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static void __iriap_close(struct iriap_cb *self)
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{
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IRDA_DEBUG(4, "%s()\n", __func__);
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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del_timer(&self->watchdog_timer);
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if (self->request_skb)
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dev_kfree_skb(self->request_skb);
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self->magic = 0;
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kfree(self);
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}
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/*
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* Function iriap_close (void)
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*
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* Closes IrIAP and deregisters with IrLMP
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*/
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void iriap_close(struct iriap_cb *self)
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{
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struct iriap_cb *entry;
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IRDA_DEBUG(2, "%s()\n", __func__);
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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if (self->lsap) {
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irlmp_close_lsap(self->lsap);
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self->lsap = NULL;
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}
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entry = (struct iriap_cb *) hashbin_remove(iriap, (long) self, NULL);
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IRDA_ASSERT(entry == self, return;);
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__iriap_close(self);
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}
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EXPORT_SYMBOL(iriap_close);
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static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode)
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{
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notify_t notify;
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IRDA_DEBUG(2, "%s()\n", __func__);
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irda_notify_init(¬ify);
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notify.connect_confirm = iriap_connect_confirm;
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notify.connect_indication = iriap_connect_indication;
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notify.disconnect_indication = iriap_disconnect_indication;
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notify.data_indication = iriap_data_indication;
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notify.instance = self;
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if (mode == IAS_CLIENT)
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strcpy(notify.name, "IrIAS cli");
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else
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strcpy(notify.name, "IrIAS srv");
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self->lsap = irlmp_open_lsap(slsap_sel, ¬ify, 0);
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if (self->lsap == NULL) {
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IRDA_ERROR("%s: Unable to allocated LSAP!\n", __func__);
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return -1;
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}
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self->slsap_sel = self->lsap->slsap_sel;
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return 0;
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}
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/*
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* Function iriap_disconnect_indication (handle, reason)
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*
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* Got disconnect, so clean up everything associated with this connection
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*
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*/
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static void iriap_disconnect_indication(void *instance, void *sap,
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LM_REASON reason,
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struct sk_buff *skb)
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{
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struct iriap_cb *self;
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IRDA_DEBUG(4, "%s(), reason=%s\n", __func__, irlmp_reasons[reason]);
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self = (struct iriap_cb *) instance;
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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IRDA_ASSERT(iriap != NULL, return;);
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del_timer(&self->watchdog_timer);
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/* Not needed */
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if (skb)
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dev_kfree_skb(skb);
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if (self->mode == IAS_CLIENT) {
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IRDA_DEBUG(4, "%s(), disconnect as client\n", __func__);
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iriap_do_client_event(self, IAP_LM_DISCONNECT_INDICATION,
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NULL);
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/*
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* Inform service user that the request failed by sending
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* it a NULL value. Warning, the client might close us, so
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* remember no to use self anymore after calling confirm
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*/
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if (self->confirm)
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self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
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} else {
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IRDA_DEBUG(4, "%s(), disconnect as server\n", __func__);
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iriap_do_server_event(self, IAP_LM_DISCONNECT_INDICATION,
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NULL);
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iriap_close(self);
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}
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}
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/*
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* Function iriap_disconnect_request (handle)
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*/
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static void iriap_disconnect_request(struct iriap_cb *self)
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{
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struct sk_buff *tx_skb;
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IRDA_DEBUG(4, "%s()\n", __func__);
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
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if (tx_skb == NULL) {
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IRDA_DEBUG(0,
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"%s(), Could not allocate an sk_buff of length %d\n",
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__func__, LMP_MAX_HEADER);
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return;
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}
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/*
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* Reserve space for MUX control and LAP header
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*/
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skb_reserve(tx_skb, LMP_MAX_HEADER);
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irlmp_disconnect_request(self->lsap, tx_skb);
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}
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/*
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* Function iriap_getvaluebyclass (addr, name, attr)
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*
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* Retrieve all values from attribute in all objects with given class
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* name
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*/
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int iriap_getvaluebyclass_request(struct iriap_cb *self,
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__u32 saddr, __u32 daddr,
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char *name, char *attr)
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{
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struct sk_buff *tx_skb;
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int name_len, attr_len, skb_len;
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__u8 *frame;
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IRDA_ASSERT(self != NULL, return -1;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return -1;);
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/* Client must supply the destination device address */
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if (!daddr)
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return -1;
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self->daddr = daddr;
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self->saddr = saddr;
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/*
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* Save operation, so we know what the later indication is about
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*/
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self->operation = GET_VALUE_BY_CLASS;
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/* Give ourselves 10 secs to finish this operation */
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iriap_start_watchdog_timer(self, 10*HZ);
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name_len = strlen(name); /* Up to IAS_MAX_CLASSNAME = 60 */
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attr_len = strlen(attr); /* Up to IAS_MAX_ATTRIBNAME = 60 */
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skb_len = self->max_header_size+2+name_len+1+attr_len+4;
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tx_skb = alloc_skb(skb_len, GFP_ATOMIC);
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if (!tx_skb)
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return -ENOMEM;
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/* Reserve space for MUX and LAP header */
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skb_reserve(tx_skb, self->max_header_size);
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skb_put(tx_skb, 3+name_len+attr_len);
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frame = tx_skb->data;
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/* Build frame */
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frame[0] = IAP_LST | GET_VALUE_BY_CLASS;
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frame[1] = name_len; /* Insert length of name */
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memcpy(frame+2, name, name_len); /* Insert name */
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frame[2+name_len] = attr_len; /* Insert length of attr */
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memcpy(frame+3+name_len, attr, attr_len); /* Insert attr */
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iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, tx_skb);
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/* Drop reference count - see state_s_disconnect(). */
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dev_kfree_skb(tx_skb);
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return 0;
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}
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EXPORT_SYMBOL(iriap_getvaluebyclass_request);
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/*
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* Function iriap_getvaluebyclass_confirm (self, skb)
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*
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* Got result from GetValueByClass command. Parse it and return result
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* to service user.
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*
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*/
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static void iriap_getvaluebyclass_confirm(struct iriap_cb *self,
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struct sk_buff *skb)
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{
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struct ias_value *value;
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int charset;
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__u32 value_len;
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__u32 tmp_cpu32;
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__u16 obj_id;
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__u16 len;
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__u8 type;
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__u8 *fp;
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int n;
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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IRDA_ASSERT(skb != NULL, return;);
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/* Initialize variables */
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fp = skb->data;
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n = 2;
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/* Get length, MSB first */
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len = get_unaligned_be16(fp + n);
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n += 2;
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IRDA_DEBUG(4, "%s(), len=%d\n", __func__, len);
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/* Get object ID, MSB first */
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obj_id = get_unaligned_be16(fp + n);
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n += 2;
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type = fp[n++];
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IRDA_DEBUG(4, "%s(), Value type = %d\n", __func__, type);
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switch (type) {
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case IAS_INTEGER:
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memcpy(&tmp_cpu32, fp+n, 4); n += 4;
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be32_to_cpus(&tmp_cpu32);
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value = irias_new_integer_value(tmp_cpu32);
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/* Legal values restricted to 0x01-0x6f, page 15 irttp */
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IRDA_DEBUG(4, "%s(), lsap=%d\n", __func__, value->t.integer);
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break;
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case IAS_STRING:
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charset = fp[n++];
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switch (charset) {
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case CS_ASCII:
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break;
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/* case CS_ISO_8859_1: */
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/* case CS_ISO_8859_2: */
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/* case CS_ISO_8859_3: */
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/* case CS_ISO_8859_4: */
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/* case CS_ISO_8859_5: */
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/* case CS_ISO_8859_6: */
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/* case CS_ISO_8859_7: */
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/* case CS_ISO_8859_8: */
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/* case CS_ISO_8859_9: */
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/* case CS_UNICODE: */
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default:
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IRDA_DEBUG(0, "%s(), charset %s, not supported\n",
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__func__, ias_charset_types[charset]);
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|
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/* Aborting, close connection! */
|
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iriap_disconnect_request(self);
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return;
|
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/* break; */
|
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}
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value_len = fp[n++];
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IRDA_DEBUG(4, "%s(), strlen=%d\n", __func__, value_len);
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/* Make sure the string is null-terminated */
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fp[n+value_len] = 0x00;
|
|
IRDA_DEBUG(4, "Got string %s\n", fp+n);
|
|
|
|
/* Will truncate to IAS_MAX_STRING bytes */
|
|
value = irias_new_string_value(fp+n);
|
|
break;
|
|
case IAS_OCT_SEQ:
|
|
value_len = get_unaligned_be16(fp + n);
|
|
n += 2;
|
|
|
|
/* Will truncate to IAS_MAX_OCTET_STRING bytes */
|
|
value = irias_new_octseq_value(fp+n, value_len);
|
|
break;
|
|
default:
|
|
value = irias_new_missing_value();
|
|
break;
|
|
}
|
|
|
|
/* Finished, close connection! */
|
|
iriap_disconnect_request(self);
|
|
|
|
/* Warning, the client might close us, so remember no to use self
|
|
* anymore after calling confirm
|
|
*/
|
|
if (self->confirm)
|
|
self->confirm(IAS_SUCCESS, obj_id, value, self->priv);
|
|
else {
|
|
IRDA_DEBUG(0, "%s(), missing handler!\n", __func__);
|
|
irias_delete_value(value);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Function iriap_getvaluebyclass_response ()
|
|
*
|
|
* Send answer back to remote LM-IAS
|
|
*
|
|
*/
|
|
static void iriap_getvaluebyclass_response(struct iriap_cb *self,
|
|
__u16 obj_id,
|
|
__u8 ret_code,
|
|
struct ias_value *value)
|
|
{
|
|
struct sk_buff *tx_skb;
|
|
int n;
|
|
__be32 tmp_be32;
|
|
__be16 tmp_be16;
|
|
__u8 *fp;
|
|
|
|
IRDA_DEBUG(4, "%s()\n", __func__);
|
|
|
|
IRDA_ASSERT(self != NULL, return;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
|
|
IRDA_ASSERT(value != NULL, return;);
|
|
IRDA_ASSERT(value->len <= 1024, return;);
|
|
|
|
/* Initialize variables */
|
|
n = 0;
|
|
|
|
/*
|
|
* We must adjust the size of the response after the length of the
|
|
* value. We add 32 bytes because of the 6 bytes for the frame and
|
|
* max 5 bytes for the value coding.
|
|
*/
|
|
tx_skb = alloc_skb(value->len + self->max_header_size + 32,
|
|
GFP_ATOMIC);
|
|
if (!tx_skb)
|
|
return;
|
|
|
|
/* Reserve space for MUX and LAP header */
|
|
skb_reserve(tx_skb, self->max_header_size);
|
|
skb_put(tx_skb, 6);
|
|
|
|
fp = tx_skb->data;
|
|
|
|
/* Build frame */
|
|
fp[n++] = GET_VALUE_BY_CLASS | IAP_LST;
|
|
fp[n++] = ret_code;
|
|
|
|
/* Insert list length (MSB first) */
|
|
tmp_be16 = htons(0x0001);
|
|
memcpy(fp+n, &tmp_be16, 2); n += 2;
|
|
|
|
/* Insert object identifier ( MSB first) */
|
|
tmp_be16 = cpu_to_be16(obj_id);
|
|
memcpy(fp+n, &tmp_be16, 2); n += 2;
|
|
|
|
switch (value->type) {
|
|
case IAS_STRING:
|
|
skb_put(tx_skb, 3 + value->len);
|
|
fp[n++] = value->type;
|
|
fp[n++] = 0; /* ASCII */
|
|
fp[n++] = (__u8) value->len;
|
|
memcpy(fp+n, value->t.string, value->len); n+=value->len;
|
|
break;
|
|
case IAS_INTEGER:
|
|
skb_put(tx_skb, 5);
|
|
fp[n++] = value->type;
|
|
|
|
tmp_be32 = cpu_to_be32(value->t.integer);
|
|
memcpy(fp+n, &tmp_be32, 4); n += 4;
|
|
break;
|
|
case IAS_OCT_SEQ:
|
|
skb_put(tx_skb, 3 + value->len);
|
|
fp[n++] = value->type;
|
|
|
|
tmp_be16 = cpu_to_be16(value->len);
|
|
memcpy(fp+n, &tmp_be16, 2); n += 2;
|
|
memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len;
|
|
break;
|
|
case IAS_MISSING:
|
|
IRDA_DEBUG( 3, "%s: sending IAS_MISSING\n", __func__);
|
|
skb_put(tx_skb, 1);
|
|
fp[n++] = value->type;
|
|
break;
|
|
default:
|
|
IRDA_DEBUG(0, "%s(), type not implemented!\n", __func__);
|
|
break;
|
|
}
|
|
iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, tx_skb);
|
|
|
|
/* Drop reference count - see state_r_execute(). */
|
|
dev_kfree_skb(tx_skb);
|
|
}
|
|
|
|
/*
|
|
* Function iriap_getvaluebyclass_indication (self, skb)
|
|
*
|
|
* getvaluebyclass is requested from peer LM-IAS
|
|
*
|
|
*/
|
|
static void iriap_getvaluebyclass_indication(struct iriap_cb *self,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ias_object *obj;
|
|
struct ias_attrib *attrib;
|
|
int name_len;
|
|
int attr_len;
|
|
char name[IAS_MAX_CLASSNAME + 1]; /* 60 bytes */
|
|
char attr[IAS_MAX_ATTRIBNAME + 1]; /* 60 bytes */
|
|
__u8 *fp;
|
|
int n;
|
|
|
|
IRDA_DEBUG(4, "%s()\n", __func__);
|
|
|
|
IRDA_ASSERT(self != NULL, return;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
|
|
IRDA_ASSERT(skb != NULL, return;);
|
|
|
|
fp = skb->data;
|
|
n = 1;
|
|
|
|
name_len = fp[n++];
|
|
memcpy(name, fp+n, name_len); n+=name_len;
|
|
name[name_len] = '\0';
|
|
|
|
attr_len = fp[n++];
|
|
memcpy(attr, fp+n, attr_len); n+=attr_len;
|
|
attr[attr_len] = '\0';
|
|
|
|
IRDA_DEBUG(4, "LM-IAS: Looking up %s: %s\n", name, attr);
|
|
obj = irias_find_object(name);
|
|
|
|
if (obj == NULL) {
|
|
IRDA_DEBUG(2, "LM-IAS: Object %s not found\n", name);
|
|
iriap_getvaluebyclass_response(self, 0x1235, IAS_CLASS_UNKNOWN,
|
|
&irias_missing);
|
|
return;
|
|
}
|
|
IRDA_DEBUG(4, "LM-IAS: found %s, id=%d\n", obj->name, obj->id);
|
|
|
|
attrib = irias_find_attrib(obj, attr);
|
|
if (attrib == NULL) {
|
|
IRDA_DEBUG(2, "LM-IAS: Attribute %s not found\n", attr);
|
|
iriap_getvaluebyclass_response(self, obj->id,
|
|
IAS_ATTRIB_UNKNOWN,
|
|
&irias_missing);
|
|
return;
|
|
}
|
|
|
|
/* We have a match; send the value. */
|
|
iriap_getvaluebyclass_response(self, obj->id, IAS_SUCCESS,
|
|
attrib->value);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Function iriap_send_ack (void)
|
|
*
|
|
* Currently not used
|
|
*
|
|
*/
|
|
void iriap_send_ack(struct iriap_cb *self)
|
|
{
|
|
struct sk_buff *tx_skb;
|
|
__u8 *frame;
|
|
|
|
IRDA_DEBUG(2, "%s()\n", __func__);
|
|
|
|
IRDA_ASSERT(self != NULL, return;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
|
|
|
|
tx_skb = alloc_skb(LMP_MAX_HEADER + 1, GFP_ATOMIC);
|
|
if (!tx_skb)
|
|
return;
|
|
|
|
/* Reserve space for MUX and LAP header */
|
|
skb_reserve(tx_skb, self->max_header_size);
|
|
skb_put(tx_skb, 1);
|
|
frame = tx_skb->data;
|
|
|
|
/* Build frame */
|
|
frame[0] = IAP_LST | IAP_ACK | self->operation;
|
|
|
|
irlmp_data_request(self->lsap, tx_skb);
|
|
}
|
|
|
|
void iriap_connect_request(struct iriap_cb *self)
|
|
{
|
|
int ret;
|
|
|
|
IRDA_ASSERT(self != NULL, return;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
|
|
|
|
ret = irlmp_connect_request(self->lsap, LSAP_IAS,
|
|
self->saddr, self->daddr,
|
|
NULL, NULL);
|
|
if (ret < 0) {
|
|
IRDA_DEBUG(0, "%s(), connect failed!\n", __func__);
|
|
self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Function iriap_connect_confirm (handle, skb)
|
|
*
|
|
* LSAP connection confirmed!
|
|
*
|
|
*/
|
|
static void iriap_connect_confirm(void *instance, void *sap,
|
|
struct qos_info *qos, __u32 max_seg_size,
|
|
__u8 max_header_size,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct iriap_cb *self;
|
|
|
|
self = (struct iriap_cb *) instance;
|
|
|
|
IRDA_ASSERT(self != NULL, return;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
|
|
IRDA_ASSERT(skb != NULL, return;);
|
|
|
|
self->max_data_size = max_seg_size;
|
|
self->max_header_size = max_header_size;
|
|
|
|
del_timer(&self->watchdog_timer);
|
|
|
|
iriap_do_client_event(self, IAP_LM_CONNECT_CONFIRM, skb);
|
|
|
|
/* Drop reference count - see state_s_make_call(). */
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
/*
|
|
* Function iriap_connect_indication ( handle, skb)
|
|
*
|
|
* Remote LM-IAS is requesting connection
|
|
*
|
|
*/
|
|
static void iriap_connect_indication(void *instance, void *sap,
|
|
struct qos_info *qos, __u32 max_seg_size,
|
|
__u8 max_header_size,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct iriap_cb *self, *new;
|
|
|
|
IRDA_DEBUG(1, "%s()\n", __func__);
|
|
|
|
self = (struct iriap_cb *) instance;
|
|
|
|
IRDA_ASSERT(skb != NULL, return;);
|
|
IRDA_ASSERT(self != NULL, goto out;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;);
|
|
|
|
/* Start new server */
|
|
new = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
|
|
if (!new) {
|
|
IRDA_DEBUG(0, "%s(), open failed\n", __func__);
|
|
goto out;
|
|
}
|
|
|
|
/* Now attach up the new "socket" */
|
|
new->lsap = irlmp_dup(self->lsap, new);
|
|
if (!new->lsap) {
|
|
IRDA_DEBUG(0, "%s(), dup failed!\n", __func__);
|
|
goto out;
|
|
}
|
|
|
|
new->max_data_size = max_seg_size;
|
|
new->max_header_size = max_header_size;
|
|
|
|
/* Clean up the original one to keep it in listen state */
|
|
irlmp_listen(self->lsap);
|
|
|
|
iriap_do_server_event(new, IAP_LM_CONNECT_INDICATION, skb);
|
|
|
|
out:
|
|
/* Drop reference count - see state_r_disconnect(). */
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
/*
|
|
* Function iriap_data_indication (handle, skb)
|
|
*
|
|
* Receives data from connection identified by handle from IrLMP
|
|
*
|
|
*/
|
|
static int iriap_data_indication(void *instance, void *sap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct iriap_cb *self;
|
|
__u8 *frame;
|
|
__u8 opcode;
|
|
|
|
IRDA_DEBUG(3, "%s()\n", __func__);
|
|
|
|
self = (struct iriap_cb *) instance;
|
|
|
|
IRDA_ASSERT(skb != NULL, return 0;);
|
|
IRDA_ASSERT(self != NULL, goto out;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;);
|
|
|
|
frame = skb->data;
|
|
|
|
if (self->mode == IAS_SERVER) {
|
|
/* Call server */
|
|
IRDA_DEBUG(4, "%s(), Calling server!\n", __func__);
|
|
iriap_do_r_connect_event(self, IAP_RECV_F_LST, skb);
|
|
goto out;
|
|
}
|
|
opcode = frame[0];
|
|
if (~opcode & IAP_LST) {
|
|
IRDA_WARNING("%s:, IrIAS multiframe commands or "
|
|
"results is not implemented yet!\n",
|
|
__func__);
|
|
goto out;
|
|
}
|
|
|
|
/* Check for ack frames since they don't contain any data */
|
|
if (opcode & IAP_ACK) {
|
|
IRDA_DEBUG(0, "%s() Got ack frame!\n", __func__);
|
|
goto out;
|
|
}
|
|
|
|
opcode &= ~IAP_LST; /* Mask away LST bit */
|
|
|
|
switch (opcode) {
|
|
case GET_INFO_BASE:
|
|
IRDA_DEBUG(0, "IrLMP GetInfoBaseDetails not implemented!\n");
|
|
break;
|
|
case GET_VALUE_BY_CLASS:
|
|
iriap_do_call_event(self, IAP_RECV_F_LST, NULL);
|
|
|
|
switch (frame[1]) {
|
|
case IAS_SUCCESS:
|
|
iriap_getvaluebyclass_confirm(self, skb);
|
|
break;
|
|
case IAS_CLASS_UNKNOWN:
|
|
IRDA_DEBUG(1, "%s(), No such class!\n", __func__);
|
|
/* Finished, close connection! */
|
|
iriap_disconnect_request(self);
|
|
|
|
/*
|
|
* Warning, the client might close us, so remember
|
|
* no to use self anymore after calling confirm
|
|
*/
|
|
if (self->confirm)
|
|
self->confirm(IAS_CLASS_UNKNOWN, 0, NULL,
|
|
self->priv);
|
|
break;
|
|
case IAS_ATTRIB_UNKNOWN:
|
|
IRDA_DEBUG(1, "%s(), No such attribute!\n", __func__);
|
|
/* Finished, close connection! */
|
|
iriap_disconnect_request(self);
|
|
|
|
/*
|
|
* Warning, the client might close us, so remember
|
|
* no to use self anymore after calling confirm
|
|
*/
|
|
if (self->confirm)
|
|
self->confirm(IAS_ATTRIB_UNKNOWN, 0, NULL,
|
|
self->priv);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
IRDA_DEBUG(0, "%s(), Unknown op-code: %02x\n", __func__,
|
|
opcode);
|
|
break;
|
|
}
|
|
|
|
out:
|
|
/* Cleanup - sub-calls will have done skb_get() as needed. */
|
|
dev_kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Function iriap_call_indication (self, skb)
|
|
*
|
|
* Received call to server from peer LM-IAS
|
|
*
|
|
*/
|
|
void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb)
|
|
{
|
|
__u8 *fp;
|
|
__u8 opcode;
|
|
|
|
IRDA_DEBUG(4, "%s()\n", __func__);
|
|
|
|
IRDA_ASSERT(self != NULL, return;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
|
|
IRDA_ASSERT(skb != NULL, return;);
|
|
|
|
fp = skb->data;
|
|
|
|
opcode = fp[0];
|
|
if (~opcode & 0x80) {
|
|
IRDA_WARNING("%s: IrIAS multiframe commands or results "
|
|
"is not implemented yet!\n", __func__);
|
|
return;
|
|
}
|
|
opcode &= 0x7f; /* Mask away LST bit */
|
|
|
|
switch (opcode) {
|
|
case GET_INFO_BASE:
|
|
IRDA_WARNING("%s: GetInfoBaseDetails not implemented yet!\n",
|
|
__func__);
|
|
break;
|
|
case GET_VALUE_BY_CLASS:
|
|
iriap_getvaluebyclass_indication(self, skb);
|
|
break;
|
|
}
|
|
/* skb will be cleaned up in iriap_data_indication */
|
|
}
|
|
|
|
/*
|
|
* Function iriap_watchdog_timer_expired (data)
|
|
*
|
|
* Query has taken too long time, so abort
|
|
*
|
|
*/
|
|
static void iriap_watchdog_timer_expired(void *data)
|
|
{
|
|
struct iriap_cb *self = (struct iriap_cb *) data;
|
|
|
|
IRDA_ASSERT(self != NULL, return;);
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
|
|
|
|
/* iriap_close(self); */
|
|
}
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
|
|
static const char *const ias_value_types[] = {
|
|
"IAS_MISSING",
|
|
"IAS_INTEGER",
|
|
"IAS_OCT_SEQ",
|
|
"IAS_STRING"
|
|
};
|
|
|
|
static inline struct ias_object *irias_seq_idx(loff_t pos)
|
|
{
|
|
struct ias_object *obj;
|
|
|
|
for (obj = (struct ias_object *) hashbin_get_first(irias_objects);
|
|
obj; obj = (struct ias_object *) hashbin_get_next(irias_objects)) {
|
|
if (pos-- == 0)
|
|
break;
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
static void *irias_seq_start(struct seq_file *seq, loff_t *pos)
|
|
{
|
|
spin_lock_irq(&irias_objects->hb_spinlock);
|
|
|
|
return *pos ? irias_seq_idx(*pos - 1) : SEQ_START_TOKEN;
|
|
}
|
|
|
|
static void *irias_seq_next(struct seq_file *seq, void *v, loff_t *pos)
|
|
{
|
|
++*pos;
|
|
|
|
return (v == SEQ_START_TOKEN)
|
|
? (void *) hashbin_get_first(irias_objects)
|
|
: (void *) hashbin_get_next(irias_objects);
|
|
}
|
|
|
|
static void irias_seq_stop(struct seq_file *seq, void *v)
|
|
{
|
|
spin_unlock_irq(&irias_objects->hb_spinlock);
|
|
}
|
|
|
|
static int irias_seq_show(struct seq_file *seq, void *v)
|
|
{
|
|
if (v == SEQ_START_TOKEN)
|
|
seq_puts(seq, "LM-IAS Objects:\n");
|
|
else {
|
|
struct ias_object *obj = v;
|
|
struct ias_attrib *attrib;
|
|
|
|
IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -EINVAL;);
|
|
|
|
seq_printf(seq, "name: %s, id=%d\n",
|
|
obj->name, obj->id);
|
|
|
|
/* Careful for priority inversions here !
|
|
* All other uses of attrib spinlock are independent of
|
|
* the object spinlock, so we are safe. Jean II */
|
|
spin_lock(&obj->attribs->hb_spinlock);
|
|
|
|
/* List all attributes for this object */
|
|
for (attrib = (struct ias_attrib *) hashbin_get_first(obj->attribs);
|
|
attrib != NULL;
|
|
attrib = (struct ias_attrib *) hashbin_get_next(obj->attribs)) {
|
|
|
|
IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC,
|
|
goto outloop; );
|
|
|
|
seq_printf(seq, " - Attribute name: \"%s\", ",
|
|
attrib->name);
|
|
seq_printf(seq, "value[%s]: ",
|
|
ias_value_types[attrib->value->type]);
|
|
|
|
switch (attrib->value->type) {
|
|
case IAS_INTEGER:
|
|
seq_printf(seq, "%d\n",
|
|
attrib->value->t.integer);
|
|
break;
|
|
case IAS_STRING:
|
|
seq_printf(seq, "\"%s\"\n",
|
|
attrib->value->t.string);
|
|
break;
|
|
case IAS_OCT_SEQ:
|
|
seq_printf(seq, "octet sequence (%d bytes)\n",
|
|
attrib->value->len);
|
|
break;
|
|
case IAS_MISSING:
|
|
seq_puts(seq, "missing\n");
|
|
break;
|
|
default:
|
|
seq_printf(seq, "type %d?\n",
|
|
attrib->value->type);
|
|
}
|
|
seq_putc(seq, '\n');
|
|
|
|
}
|
|
IRDA_ASSERT_LABEL(outloop:)
|
|
spin_unlock(&obj->attribs->hb_spinlock);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations irias_seq_ops = {
|
|
.start = irias_seq_start,
|
|
.next = irias_seq_next,
|
|
.stop = irias_seq_stop,
|
|
.show = irias_seq_show,
|
|
};
|
|
|
|
static int irias_seq_open(struct inode *inode, struct file *file)
|
|
{
|
|
IRDA_ASSERT( irias_objects != NULL, return -EINVAL;);
|
|
|
|
return seq_open(file, &irias_seq_ops);
|
|
}
|
|
|
|
const struct file_operations irias_seq_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = irias_seq_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
#endif /* PROC_FS */
|