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-rw-r--r--net/irda/irlan/irlan_provider.c408
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diff --git a/net/irda/irlan/irlan_provider.c b/net/irda/irlan/irlan_provider.c
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index 15c292c..0000000
--- a/net/irda/irlan/irlan_provider.c
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-/*********************************************************************
- *
- * Filename: irlan_provider.c
- * Version: 0.9
- * Description: IrDA LAN Access Protocol Implementation
- * Status: Experimental.
- * Author: Dag Brattli <dagb@cs.uit.no>
- * Created at: Sun Aug 31 20:14:37 1997
- * Modified at: Sat Oct 30 12:52:10 1999
- * Modified by: Dag Brattli <dagb@cs.uit.no>
- * Sources: skeleton.c by Donald Becker <becker@CESDIS.gsfc.nasa.gov>
- * slip.c by Laurence Culhane, <loz@holmes.demon.co.uk>
- * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
- *
- * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * 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/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/init.h>
-#include <linux/random.h>
-#include <linux/bitops.h>
-#include <linux/slab.h>
-
-#include <asm/byteorder.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.h>
-#include <net/irda/timer.h>
-
-#include <net/irda/irlan_common.h>
-#include <net/irda/irlan_eth.h>
-#include <net/irda/irlan_event.h>
-#include <net/irda/irlan_provider.h>
-#include <net/irda/irlan_filter.h>
-#include <net/irda/irlan_client.h>
-
-static void irlan_provider_connect_indication(void *instance, void *sap,
- struct qos_info *qos,
- __u32 max_sdu_size,
- __u8 max_header_size,
- struct sk_buff *skb);
-
-/*
- * Function irlan_provider_control_data_indication (handle, skb)
- *
- * This function gets the data that is received on the control channel
- *
- */
-static int irlan_provider_data_indication(void *instance, void *sap,
- struct sk_buff *skb)
-{
- struct irlan_cb *self;
- __u8 code;
-
- self = instance;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -1;);
-
- IRDA_ASSERT(skb != NULL, return -1;);
-
- code = skb->data[0];
- switch(code) {
- case CMD_GET_PROVIDER_INFO:
- pr_debug("Got GET_PROVIDER_INFO command!\n");
- irlan_do_provider_event(self, IRLAN_GET_INFO_CMD, skb);
- break;
-
- case CMD_GET_MEDIA_CHAR:
- pr_debug("Got GET_MEDIA_CHAR command!\n");
- irlan_do_provider_event(self, IRLAN_GET_MEDIA_CMD, skb);
- break;
- case CMD_OPEN_DATA_CHANNEL:
- pr_debug("Got OPEN_DATA_CHANNEL command!\n");
- irlan_do_provider_event(self, IRLAN_OPEN_DATA_CMD, skb);
- break;
- case CMD_FILTER_OPERATION:
- pr_debug("Got FILTER_OPERATION command!\n");
- irlan_do_provider_event(self, IRLAN_FILTER_CONFIG_CMD, skb);
- break;
- case CMD_RECONNECT_DATA_CHAN:
- pr_debug("%s(), Got RECONNECT_DATA_CHAN command\n", __func__);
- pr_debug("%s(), NOT IMPLEMENTED\n", __func__);
- break;
- case CMD_CLOSE_DATA_CHAN:
- pr_debug("Got CLOSE_DATA_CHAN command!\n");
- pr_debug("%s(), NOT IMPLEMENTED\n", __func__);
- break;
- default:
- pr_debug("%s(), Unknown command!\n", __func__);
- break;
- }
- return 0;
-}
-
-/*
- * Function irlan_provider_connect_indication (handle, skb, priv)
- *
- * Got connection from peer IrLAN client
- *
- */
-static void irlan_provider_connect_indication(void *instance, void *sap,
- struct qos_info *qos,
- __u32 max_sdu_size,
- __u8 max_header_size,
- struct sk_buff *skb)
-{
- struct irlan_cb *self;
- struct tsap_cb *tsap;
-
- self = instance;
- tsap = sap;
-
- IRDA_ASSERT(self != NULL, return;);
- IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
-
- IRDA_ASSERT(tsap == self->provider.tsap_ctrl,return;);
- IRDA_ASSERT(self->provider.state == IRLAN_IDLE, return;);
-
- self->provider.max_sdu_size = max_sdu_size;
- self->provider.max_header_size = max_header_size;
-
- irlan_do_provider_event(self, IRLAN_CONNECT_INDICATION, NULL);
-
- /*
- * If we are in peer mode, the client may not have got the discovery
- * indication it needs to make progress. If the client is still in
- * IDLE state, we must kick it.
- */
- if ((self->provider.access_type == ACCESS_PEER) &&
- (self->client.state == IRLAN_IDLE))
- {
- irlan_client_wakeup(self, self->saddr, self->daddr);
- }
-}
-
-/*
- * Function irlan_provider_connect_response (handle)
- *
- * Accept incoming connection
- *
- */
-void irlan_provider_connect_response(struct irlan_cb *self,
- struct tsap_cb *tsap)
-{
- IRDA_ASSERT(self != NULL, return;);
- IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
-
- /* Just accept */
- irttp_connect_response(tsap, IRLAN_MTU, NULL);
-}
-
-static void irlan_provider_disconnect_indication(void *instance, void *sap,
- LM_REASON reason,
- struct sk_buff *userdata)
-{
- struct irlan_cb *self;
- struct tsap_cb *tsap;
-
- pr_debug("%s(), reason=%d\n", __func__ , reason);
-
- self = instance;
- tsap = sap;
-
- IRDA_ASSERT(self != NULL, return;);
- IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
- IRDA_ASSERT(tsap != NULL, return;);
- IRDA_ASSERT(tsap->magic == TTP_TSAP_MAGIC, return;);
-
- IRDA_ASSERT(tsap == self->provider.tsap_ctrl, return;);
-
- irlan_do_provider_event(self, IRLAN_LMP_DISCONNECT, NULL);
-}
-
-/*
- * Function irlan_parse_open_data_cmd (self, skb)
- *
- *
- *
- */
-int irlan_parse_open_data_cmd(struct irlan_cb *self, struct sk_buff *skb)
-{
- int ret;
-
- ret = irlan_provider_parse_command(self, CMD_OPEN_DATA_CHANNEL, skb);
-
- /* Open data channel */
- irlan_open_data_tsap(self);
-
- return ret;
-}
-
-/*
- * Function parse_command (skb)
- *
- * Extract all parameters from received buffer, then feed them to
- * check_params for parsing
- *
- */
-int irlan_provider_parse_command(struct irlan_cb *self, int cmd,
- struct sk_buff *skb)
-{
- __u8 *frame;
- __u8 *ptr;
- int count;
- __u16 val_len;
- int i;
- char *name;
- char *value;
- int ret = RSP_SUCCESS;
-
- IRDA_ASSERT(skb != NULL, return -RSP_PROTOCOL_ERROR;);
-
- pr_debug("%s(), skb->len=%d\n", __func__ , (int)skb->len);
-
- IRDA_ASSERT(self != NULL, return -RSP_PROTOCOL_ERROR;);
- IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -RSP_PROTOCOL_ERROR;);
-
- if (!skb)
- return -RSP_PROTOCOL_ERROR;
-
- frame = skb->data;
-
- name = kmalloc(255, GFP_ATOMIC);
- if (!name)
- return -RSP_INSUFFICIENT_RESOURCES;
- value = kmalloc(1016, GFP_ATOMIC);
- if (!value) {
- kfree(name);
- return -RSP_INSUFFICIENT_RESOURCES;
- }
-
- /* How many parameters? */
- count = frame[1];
-
- pr_debug("Got %d parameters\n", count);
-
- ptr = frame+2;
-
- /* For all parameters */
- for (i=0; i<count;i++) {
- ret = irlan_extract_param(ptr, name, value, &val_len);
- if (ret < 0) {
- pr_debug("%s(), IrLAN, Error!\n", __func__);
- break;
- }
- ptr+=ret;
- ret = RSP_SUCCESS;
- irlan_check_command_param(self, name, value);
- }
- /* Cleanup */
- kfree(name);
- kfree(value);
-
- return ret;
-}
-
-/*
- * Function irlan_provider_send_reply (self, info)
- *
- * Send reply to query to peer IrLAN layer
- *
- */
-void irlan_provider_send_reply(struct irlan_cb *self, int command,
- int ret_code)
-{
- struct sk_buff *skb;
-
- IRDA_ASSERT(self != NULL, return;);
- IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
-
- skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER +
- /* Bigger param length comes from CMD_GET_MEDIA_CHAR */
- IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "DIRECTED") +
- IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "BROADCAST") +
- IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "MULTICAST") +
- IRLAN_STRING_PARAMETER_LEN("ACCESS_TYPE", "HOSTED"),
- GFP_ATOMIC);
-
- if (!skb)
- return;
-
- /* Reserve space for TTP, LMP, and LAP header */
- skb_reserve(skb, self->provider.max_header_size);
- skb_put(skb, 2);
-
- switch (command) {
- case CMD_GET_PROVIDER_INFO:
- skb->data[0] = 0x00; /* Success */
- skb->data[1] = 0x02; /* 2 parameters */
- switch (self->media) {
- case MEDIA_802_3:
- irlan_insert_string_param(skb, "MEDIA", "802.3");
- break;
- case MEDIA_802_5:
- irlan_insert_string_param(skb, "MEDIA", "802.5");
- break;
- default:
- pr_debug("%s(), unknown media type!\n", __func__);
- break;
- }
- irlan_insert_short_param(skb, "IRLAN_VER", 0x0101);
- break;
-
- case CMD_GET_MEDIA_CHAR:
- skb->data[0] = 0x00; /* Success */
- skb->data[1] = 0x05; /* 5 parameters */
- irlan_insert_string_param(skb, "FILTER_TYPE", "DIRECTED");
- irlan_insert_string_param(skb, "FILTER_TYPE", "BROADCAST");
- irlan_insert_string_param(skb, "FILTER_TYPE", "MULTICAST");
-
- switch (self->provider.access_type) {
- case ACCESS_DIRECT:
- irlan_insert_string_param(skb, "ACCESS_TYPE", "DIRECT");
- break;
- case ACCESS_PEER:
- irlan_insert_string_param(skb, "ACCESS_TYPE", "PEER");
- break;
- case ACCESS_HOSTED:
- irlan_insert_string_param(skb, "ACCESS_TYPE", "HOSTED");
- break;
- default:
- pr_debug("%s(), Unknown access type\n", __func__);
- break;
- }
- irlan_insert_short_param(skb, "MAX_FRAME", 0x05ee);
- break;
- case CMD_OPEN_DATA_CHANNEL:
- skb->data[0] = 0x00; /* Success */
- if (self->provider.send_arb_val) {
- skb->data[1] = 0x03; /* 3 parameters */
- irlan_insert_short_param(skb, "CON_ARB",
- self->provider.send_arb_val);
- } else
- skb->data[1] = 0x02; /* 2 parameters */
- irlan_insert_byte_param(skb, "DATA_CHAN", self->stsap_sel_data);
- irlan_insert_string_param(skb, "RECONNECT_KEY", "LINUX RULES!");
- break;
- case CMD_FILTER_OPERATION:
- irlan_filter_request(self, skb);
- break;
- default:
- pr_debug("%s(), Unknown command!\n", __func__);
- break;
- }
-
- irttp_data_request(self->provider.tsap_ctrl, skb);
-}
-
-/*
- * Function irlan_provider_register(void)
- *
- * Register provider support so we can accept incoming connections.
- *
- */
-int irlan_provider_open_ctrl_tsap(struct irlan_cb *self)
-{
- struct tsap_cb *tsap;
- notify_t notify;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -1;);
-
- /* Check if already open */
- if (self->provider.tsap_ctrl)
- return -1;
-
- /*
- * First register well known control TSAP
- */
- irda_notify_init(&notify);
- notify.data_indication = irlan_provider_data_indication;
- notify.connect_indication = irlan_provider_connect_indication;
- notify.disconnect_indication = irlan_provider_disconnect_indication;
- notify.instance = self;
- strlcpy(notify.name, "IrLAN ctrl (p)", sizeof(notify.name));
-
- tsap = irttp_open_tsap(LSAP_ANY, 1, &notify);
- if (!tsap) {
- pr_debug("%s(), Got no tsap!\n", __func__);
- return -1;
- }
- self->provider.tsap_ctrl = tsap;
-
- /* Register with LM-IAS */
- irlan_ias_register(self, tsap->stsap_sel);
-
- return 0;
-}
-
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