/********************************************************************* * * Filename: iriap.c * Version: 0.8 * Description: Information Access Protocol (IAP) * Status: Experimental. * Author: Dag Brattli * Created at: Thu Aug 21 00:02:07 1997 * Modified at: Sat Dec 25 16:42:42 1999 * Modified by: Dag Brattli * * Copyright (c) 1998-1999 Dag Brattli , * All Rights Reserved. * Copyright (c) 2000-2003 Jean Tourrilhes * * 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. * * Neither Dag Brattli nor University of Tromsø admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * ********************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_IRDA_DEBUG /* FIXME: This one should go in irlmp.c */ static const char *const ias_charset_types[] = { "CS_ASCII", "CS_ISO_8859_1", "CS_ISO_8859_2", "CS_ISO_8859_3", "CS_ISO_8859_4", "CS_ISO_8859_5", "CS_ISO_8859_6", "CS_ISO_8859_7", "CS_ISO_8859_8", "CS_ISO_8859_9", "CS_UNICODE" }; #endif /* CONFIG_IRDA_DEBUG */ static hashbin_t *iriap = NULL; static void *service_handle; static void __iriap_close(struct iriap_cb *self); static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode); static void iriap_disconnect_indication(void *instance, void *sap, LM_REASON reason, struct sk_buff *skb); static void iriap_connect_indication(void *instance, void *sap, struct qos_info *qos, __u32 max_sdu_size, __u8 max_header_size, struct sk_buff *skb); static void iriap_connect_confirm(void *instance, void *sap, struct qos_info *qos, __u32 max_sdu_size, __u8 max_header_size, struct sk_buff *skb); static int iriap_data_indication(void *instance, void *sap, struct sk_buff *skb); static void iriap_watchdog_timer_expired(void *data); static inline void iriap_start_watchdog_timer(struct iriap_cb *self, int timeout) { irda_start_timer(&self->watchdog_timer, timeout, self, iriap_watchdog_timer_expired); } static struct lock_class_key irias_objects_key; /* * Function iriap_init (void) * * Initializes the IrIAP layer, called by the module initialization code * in irmod.c */ int __init iriap_init(void) { struct ias_object *obj; struct iriap_cb *server; __u8 oct_seq[6]; __u16 hints; /* Allocate master array */ iriap = hashbin_new(HB_LOCK); if (!iriap) return -ENOMEM; /* Object repository - defined in irias_object.c */ irias_objects = hashbin_new(HB_LOCK); if (!irias_objects) { IRDA_WARNING("%s: Can't allocate irias_objects hashbin!\n", __func__); hashbin_delete(iriap, NULL); return -ENOMEM; } lockdep_set_class_and_name(&irias_objects->hb_spinlock, &irias_objects_key, "irias_objects"); /* * Register some default services for IrLMP */ hints = irlmp_service_to_hint(S_COMPUTER); service_handle = irlmp_register_service(hints); /* Register the Device object with LM-IAS */ obj = irias_new_object("Device", IAS_DEVICE_ID); irias_add_string_attrib(obj, "DeviceName", "Linux", IAS_KERNEL_ATTR); oct_seq[0] = 0x01; /* Version 1 */ oct_seq[1] = 0x00; /* IAS support bits */ oct_seq[2] = 0x00; /* LM-MUX support bits */ #ifdef CONFIG_IRDA_ULTRA oct_seq[2] |= 0x04; /* Connectionless Data support */ #endif irias_add_octseq_attrib(obj, "IrLMPSupport", oct_seq, 3, IAS_KERNEL_ATTR); irias_insert_object(obj); /* * Register server support with IrLMP so we can accept incoming * connections */ server = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL); if (!server) { IRDA_DEBUG(0, "%s(), unable to open server\n", __func__); return -1; } iriap_register_lsap(server, LSAP_IAS, IAS_SERVER); return 0; } /* * Function iriap_cleanup (void) * * Initializes the IrIAP layer, called by the module cleanup code in * irmod.c */ void iriap_cleanup(void) { irlmp_unregister_service(service_handle); hashbin_delete(iriap, (FREE_FUNC) __iriap_close); hashbin_delete(irias_objects, (FREE_FUNC) __irias_delete_object); } /* * Function iriap_open (void) * * Opens an instance of the IrIAP layer, and registers with IrLMP */ struct iriap_cb *iriap_open(__u8 slsap_sel, int mode, void *priv, CONFIRM_CALLBACK callback) { struct iriap_cb *self; IRDA_DEBUG(2, "%s()\n", __func__); self = kzalloc(sizeof(*self), GFP_ATOMIC); if (!self) { IRDA_WARNING("%s: Unable to kmalloc!\n", __func__); return NULL; } /* * Initialize instance */ self->magic = IAS_MAGIC; self->mode = mode; if (mode == IAS_CLIENT) iriap_register_lsap(self, slsap_sel, mode); self->confirm = callback; self->priv = priv; /* iriap_getvaluebyclass_request() will construct packets before * we connect, so this must have a sane value... Jean II */ self->max_header_size = LMP_MAX_HEADER; init_timer(&self->watchdog_timer); hashbin_insert(iriap, (irda_queue_t *) self, (long) self, NULL); /* Initialize state machines */ iriap_next_client_state(self, S_DISCONNECT); iriap_next_call_state(self, S_MAKE_CALL); iriap_next_server_state(self, R_DISCONNECT); iriap_next_r_connect_state(self, R_WAITING); return self; } EXPORT_SYMBOL(iriap_open); /* * Function __iriap_close (self) * * Removes (deallocates) the IrIAP instance * */ static void __iriap_close(struct iriap_cb *self) { IRDA_DEBUG(4, "%s()\n", __func__); IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IAS_MAGIC, return;); del_timer(&self->watchdog_timer); if (self->request_skb) dev_kfree_skb(self->request_skb); self->magic = 0; kfree(self); } /* * Function iriap_close (void) * * Closes IrIAP and deregisters with IrLMP */ void iriap_close(struct iriap_cb *self) { struct iriap_cb *entry; IRDA_DEBUG(2, "%s()\n", __func__); IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IAS_MAGIC, return;); if (self->lsap) { irlmp_close_lsap(self->lsap); self->lsap = NULL; } entry = (struct iriap_cb *) hashbin_remove(iriap, (long) self, NULL); IRDA_ASSERT(entry == self, return;); __iriap_close(self); } EXPORT_SYMBOL(iriap_close); static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode) { notify_t notify; IRDA_DEBUG(2, "%s()\n", __func__); irda_notify_init(¬ify); notify.connect_confirm = iriap_connect_confirm; notify.connect_indication = iriap_connect_indication; notify.disconnect_indication = iriap_disconnect_indication; notify.data_indication = iriap_data_indication; notify.instance = self; if (mode == IAS_CLIENT) strcpy(notify.name, "IrIAS cli"); else strcpy(notify.name, "IrIAS srv"); self->lsap = irlmp_open_lsap(slsap_sel, ¬ify, 0); if (self->lsap == NULL) { IRDA_ERROR("%s: Unable to allocated LSAP!\n", __func__); return -1; } self->slsap_sel = self->lsap->slsap_sel; return 0; } /* * Function iriap_disconnect_indication (handle, reason) * * Got disconnect, so clean up everything associated with this connection * */ static void iriap_disconnect_indication(void *instance, void *sap, LM_REASON reason, struct sk_buff *skb) { struct iriap_cb *self; IRDA_DEBUG(4, "%s(), reason=%s\n", __func__, irlmp_reasons[reason]); self = instance; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IAS_MAGIC, return;); IRDA_ASSERT(iriap != NULL, return;); del_timer(&self->watchdog_timer); /* Not needed */ if (skb) dev_kfree_skb(skb); if (self->mode == IAS_CLIENT) { IRDA_DEBUG(4, "%s(), disconnect as client\n", __func__); iriap_do_client_event(self, IAP_LM_DISCONNECT_INDICATION, NULL); /* * Inform service user that the request failed by sending * it a NULL value. Warning, the client might close us, so * remember no to use self anymore after calling confirm */ if (self->confirm) self->confirm(IAS_DISCONNECT, 0, NULL, self->priv); } else { IRDA_DEBUG(4, "%s(), disconnect as server\n", __func__); iriap_do_server_event(self, IAP_LM_DISCONNECT_INDICATION, NULL); iriap_close(self); } } /* * Function iriap_disconnect_request (handle) */ static void iriap_disconnect_request(struct iriap_cb *self) { struct sk_buff *tx_skb; IRDA_DEBUG(4, "%s()\n", __func__); IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IAS_MAGIC, return;); tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC); if (tx_skb == NULL) { IRDA_DEBUG(0, "%s(), Could not allocate an sk_buff of length %d\n", __func__, LMP_MAX_HEADER); return; } /* * Reserve space for MUX control and LAP header */ skb_reserve(tx_skb, LMP_MAX_HEADER); irlmp_disconnect_request(self->lsap, tx_skb); } /* * Function iriap_getvaluebyclass (addr, name, attr) * * Retrieve all values from attribute in all objects with given class * name */ int iriap_getvaluebyclass_request(struct iriap_cb *self, __u32 saddr, __u32 daddr, char *name, char *attr) { struct sk_buff *tx_skb; int name_len, attr_len, skb_len; __u8 *frame; IRDA_ASSERT(self != NULL, return -1;); IRDA_ASSERT(self->magic == IAS_MAGIC, return -1;); /* Client must supply the destination device address */ if (!daddr) return -1; self->daddr = daddr; self->saddr = saddr; /* * Save operation, so we know what the later indication is about */ self->operation = GET_VALUE_BY_CLASS; /* Give ourselves 10 secs to finish this operation */ iriap_start_watchdog_timer(self, 10*HZ); name_len = strlen(name); /* Up to IAS_MAX_CLASSNAME = 60 */ attr_len = strlen(attr); /* Up to IAS_MAX_ATTRIBNAME = 60 */ skb_len = self->max_header_size+2+name_len+1+attr_len+4; tx_skb = alloc_skb(skb_len, GFP_ATOMIC); if (!tx_skb) return -ENOMEM; /* Reserve space for MUX and LAP header */ skb_reserve(tx_skb, self->max_header_size); skb_put(tx_skb, 3+name_len+attr_len); frame = tx_skb->data; /* Build frame */ frame[0] = IAP_LST | GET_VALUE_BY_CLASS; frame[1] = name_len; /* Insert length of name */ memcpy(frame+2, name, name_len); /* Insert name */ frame[2+name_len] = attr_len; /* Insert length of attr */ memcpy(frame+3+name_len, attr, attr_len); /* Insert attr */ iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, tx_skb); /* Drop reference count - see state_s_disconnect(). */ dev_kfree_skb(tx_skb); return 0; } EXPORT_SYMBOL(iriap_getvaluebyclass_request); /* * Function iriap_getvaluebyclass_confirm (self, skb) * * Got result from GetValueByClass command. Parse it and return result * to service user. * */ static void iriap_getvaluebyclass_confirm(struct iriap_cb *self, struct sk_buff *skb) { struct ias_value *value; int charset; __u32 value_len; __u32 tmp_cpu32; __u16 obj_id; __u16 len; __u8 type; __u8 *fp; int n; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IAS_MAGIC, return;); IRDA_ASSERT(skb != NULL, return;); /* Initialize variables */ fp = skb->data; n = 2; /* Get length, MSB first */ len = get_unaligned_be16(fp + n); n += 2; IRDA_DEBUG(4, "%s(), len=%d\n", __func__, len); /* Get object ID, MSB first */ obj_id = get_unaligned_be16(fp + n); n += 2; type = fp[n++]; IRDA_DEBUG(4, "%s(), Value type = %d\n", __func__, type); switch (type) { case IAS_INTEGER: memcpy(&tmp_cpu32, fp+n, 4); n += 4; be32_to_cpus(&tmp_cpu32); value = irias_new_integer_value(tmp_cpu32); /* Legal values restricted to 0x01-0x6f, page 15 irttp */ IRDA_DEBUG(4, "%s(), lsap=%d\n", __func__, value->t.integer); break; case IAS_STRING: charset = fp[n++]; switch (charset) { case CS_ASCII: break; /* case CS_ISO_8859_1: */ /* case CS_ISO_8859_2: */ /* case CS_ISO_8859_3: */ /* case CS_ISO_8859_4: */ /* case CS_ISO_8859_5: */ /* case CS_ISO_8859_6: */ /* case CS_ISO_8859_7: */ /* case CS_ISO_8859_8: */ /* case CS_ISO_8859_9: */ /* case CS_UNICODE: */ default: IRDA_DEBUG(0, "%s(), charset %s, not supported\n", __func__, ias_charset_types[charset]); /* Aborting, close connection! */ iriap_disconnect_request(self); return; /* break; */ } value_len = fp[n++]; IRDA_DEBUG(4, "%s(), strlen=%d\n", __func__, value_len); /* Make sure the string is null-terminated */ if (n + value_len < skb->len) 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++]; IRDA_ASSERT(name_len < IAS_MAX_CLASSNAME + 1, return;); memcpy(name, fp+n, name_len); n+=name_len; name[name_len] = '\0'; attr_len = fp[n++]; IRDA_ASSERT(attr_len < IAS_MAX_ATTRIBNAME + 1, return;); 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); } /* * 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 = 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 = 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 = 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 */