--- /dev/null
+/*********************************************************************
+ *
+ * Filename: iriap.c
+ * Version: 0.8
+ * Description: Information Access Protocol (IAP)
+ * Status: Experimental.
+ * Author: Dag Brattli <dagb@cs.uit.no>
+ * Created at: Thu Aug 21 00:02:07 1997
+ * Modified at: Sat Dec 25 16:42:42 1999
+ * Modified by: Dag Brattli <dagb@cs.uit.no>
+ *
+ * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
+ * All Rights Reserved.
+ * Copyright (c) 2000-2003 Jean Tourrilhes <jt@hpl.hp.com>
+ *
+ * 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 <linux/module.h>
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+
+#include <net/irda/irda.h>
+#include <net/irda/irttp.h>
+#include <net/irda/irlmp.h>
+#include <net/irda/irias_object.h>
+#include <net/irda/iriap_event.h>
+#include <net/irda/iriap.h>
+
+/* FIXME: This one should go in irlmp.c */
+static const char *const ias_charset_types[] __maybe_unused = {
+ "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"
+};
+
+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) {
+ net_warn_ratelimited("%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) {
+ pr_debug("%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;
+
+ self = kzalloc(sizeof(*self), GFP_ATOMIC);
+ if (!self)
+ 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_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_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_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) {
+ net_err_ratelimited("%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;
+
+ pr_debug("%s(), reason=%s [%d]\n", __func__,
+ irlmp_reason_str(reason), 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) {
+ pr_debug("%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 {
+ pr_debug("%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_ASSERT(self != NULL, return;);
+ IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
+
+ tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
+ if (tx_skb == NULL) {
+ pr_debug("%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;
+
+ pr_debug("%s(), len=%d\n", __func__, len);
+
+ /* Get object ID, MSB first */
+ obj_id = get_unaligned_be16(fp + n);
+ n += 2;
+
+ type = fp[n++];
+ pr_debug("%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 */
+ pr_debug("%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:
+ pr_debug("%s(), charset [%d] %s, not supported\n",
+ __func__, charset,
+ charset < ARRAY_SIZE(ias_charset_types) ?
+ ias_charset_types[charset] :
+ "(unknown)");
+
+ /* Aborting, close connection! */
+ iriap_disconnect_request(self);
+ return;
+ /* break; */
+ }
+ value_len = fp[n++];
+ pr_debug("%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;
+ pr_debug("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 {
+ pr_debug("%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_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:
+ pr_debug("%s: sending IAS_MISSING\n", __func__);
+ skb_put(tx_skb, 1);
+ fp[n++] = value->type;
+ break;
+ default:
+ pr_debug("%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_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';
+
+ pr_debug("LM-IAS: Looking up %s: %s\n", name, attr);
+ obj = irias_find_object(name);
+
+ if (obj == NULL) {
+ pr_debug("LM-IAS: Object %s not found\n", name);
+ iriap_getvaluebyclass_response(self, 0x1235, IAS_CLASS_UNKNOWN,
+ &irias_missing);
+ return;
+ }
+ pr_debug("LM-IAS: found %s, id=%d\n", obj->name, obj->id);
+
+ attrib = irias_find_attrib(obj, attr);
+ if (attrib == NULL) {
+ pr_debug("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_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) {
+ pr_debug("%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;
+
+ 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) {
+ pr_debug("%s(), open failed\n", __func__);
+ goto out;
+ }
+
+ /* Now attach up the new "socket" */
+ new->lsap = irlmp_dup(self->lsap, new);
+ if (!new->lsap) {
+ pr_debug("%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;
+
+ 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 */
+ pr_debug("%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) {
+ net_warn_ratelimited("%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) {
+ pr_debug("%s() Got ack frame!\n", __func__);
+ goto out;
+ }
+
+ opcode &= ~IAP_LST; /* Mask away LST bit */
+
+ switch (opcode) {
+ case GET_INFO_BASE:
+ pr_debug("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:
+ pr_debug("%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:
+ pr_debug("%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:
+ pr_debug("%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_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) {
+ net_warn_ratelimited("%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:
+ net_warn_ratelimited("%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 */
Code Review / kvmfornfv.git / blobdiff