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Diffstat (limited to 'include/net/irda/irlap.h')
| -rw-r--r-- | include/net/irda/irlap.h | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/include/net/irda/irlap.h b/include/net/irda/irlap.h deleted file mode 100644 index 6f23e820618c..000000000000 --- a/include/net/irda/irlap.h +++ /dev/null @@ -1,311 +0,0 @@ -/********************************************************************* - * - * Filename: irlap.h - * Version: 0.8 - * Description: An IrDA LAP driver for Linux - * Status: Experimental. - * Author: Dag Brattli <dagb@cs.uit.no> - * Created at: Mon Aug 4 20:40:53 1997 - * Modified at: Fri Dec 10 13:21:17 1999 - * Modified by: Dag Brattli <dagb@cs.uit.no> - * - * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, - * All Rights Reserved. - * Copyright (c) 2000-2002 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. - * - ********************************************************************/ - -#ifndef IRLAP_H -#define IRLAP_H - -#include <linux/types.h> -#include <linux/skbuff.h> -#include <linux/netdevice.h> -#include <linux/timer.h> - -#include <net/irda/irqueue.h> /* irda_queue_t */ -#include <net/irda/qos.h> /* struct qos_info */ -#include <net/irda/discovery.h> /* discovery_t */ -#include <net/irda/irlap_event.h> /* IRLAP_STATE, ... */ -#include <net/irda/irmod.h> /* struct notify_t */ - -#define CONFIG_IRDA_DYNAMIC_WINDOW 1 - -#define LAP_RELIABLE 1 -#define LAP_UNRELIABLE 0 - -#define LAP_ADDR_HEADER 1 /* IrLAP Address Header */ -#define LAP_CTRL_HEADER 1 /* IrLAP Control Header */ - -/* May be different when we get VFIR */ -#define LAP_MAX_HEADER (LAP_ADDR_HEADER + LAP_CTRL_HEADER) - -/* Each IrDA device gets a random 32 bits IRLAP device address */ -#define LAP_ALEN 4 - -#define BROADCAST 0xffffffff /* Broadcast device address */ -#define CBROADCAST 0xfe /* Connection broadcast address */ -#define XID_FORMAT 0x01 /* Discovery XID format */ - -/* Nobody seems to use this constant. */ -#define LAP_WINDOW_SIZE 8 -/* We keep the LAP queue very small to minimise the amount of buffering. - * this improve latency and reduce resource consumption. - * This work only because we have synchronous refilling of IrLAP through - * the flow control mechanism (via scheduler and IrTTP). - * 2 buffers is the minimum we can work with, one that we send while polling - * IrTTP, and another to know that we should not send the pf bit. - * Jean II */ -#define LAP_HIGH_THRESHOLD 2 -/* Some rare non TTP clients don't implement flow control, and - * so don't comply with the above limit (and neither with this one). - * For IAP and management, it doesn't matter, because they never transmit much. - *.For IrLPT, this should be fixed. - * - Jean II */ -#define LAP_MAX_QUEUE 10 -/* Please note that all IrDA management frames (LMP/TTP conn req/disc and - * IAS queries) fall in the second category and are sent to LAP even if TTP - * is stopped. This means that those frames will wait only a maximum of - * two (2) data frames before beeing sent on the "wire", which speed up - * new socket setup when the link is saturated. - * Same story for two sockets competing for the medium : if one saturates - * the LAP, when the other want to transmit it only has to wait for - * maximum three (3) packets (2 + one scheduling), which improve performance - * of delay sensitive applications. - * Jean II */ - -#define NR_EXPECTED 1 -#define NR_UNEXPECTED 0 -#define NR_INVALID -1 - -#define NS_EXPECTED 1 -#define NS_UNEXPECTED 0 -#define NS_INVALID -1 - -/* - * Meta information passed within the IrLAP state machine - */ -struct irlap_info { - __u8 caddr; /* Connection address */ - __u8 control; /* Frame type */ - __u8 cmd; - - __u32 saddr; - __u32 daddr; - - int pf; /* Poll/final bit set */ - - __u8 nr; /* Sequence number of next frame expected */ - __u8 ns; /* Sequence number of frame sent */ - - int S; /* Number of slots */ - int slot; /* Random chosen slot */ - int s; /* Current slot */ - - discovery_t *discovery; /* Discovery information */ -}; - -/* Main structure of IrLAP */ -struct irlap_cb { - irda_queue_t q; /* Must be first */ - magic_t magic; - - /* Device we are attached to */ - struct net_device *netdev; - char hw_name[2*IFNAMSIZ + 1]; - - /* Connection state */ - volatile IRLAP_STATE state; /* Current state */ - - /* Timers used by IrLAP */ - struct timer_list query_timer; - struct timer_list slot_timer; - struct timer_list discovery_timer; - struct timer_list final_timer; - struct timer_list poll_timer; - struct timer_list wd_timer; - struct timer_list backoff_timer; - - /* Media busy stuff */ - struct timer_list media_busy_timer; - int media_busy; - - /* Timeouts which will be different with different turn time */ - int slot_timeout; - int poll_timeout; - int final_timeout; - int wd_timeout; - - struct sk_buff_head txq; /* Frames to be transmitted */ - struct sk_buff_head txq_ultra; - - __u8 caddr; /* Connection address */ - __u32 saddr; /* Source device address */ - __u32 daddr; /* Destination device address */ - - int retry_count; /* Times tried to establish connection */ - int add_wait; /* True if we are waiting for frame */ - - __u8 connect_pending; - __u8 disconnect_pending; - - /* To send a faster RR if tx queue empty */ -#ifdef CONFIG_IRDA_FAST_RR - int fast_RR_timeout; - int fast_RR; -#endif /* CONFIG_IRDA_FAST_RR */ - - int N1; /* N1 * F-timer = Negitiated link disconnect warning threshold */ - int N2; /* N2 * F-timer = Negitiated link disconnect time */ - int N3; /* Connection retry count */ - - int local_busy; - int remote_busy; - int xmitflag; - - __u8 vs; /* Next frame to be sent */ - __u8 vr; /* Next frame to be received */ - __u8 va; /* Last frame acked */ - int window; /* Nr of I-frames allowed to send */ - int window_size; /* Current negotiated window size */ - -#ifdef CONFIG_IRDA_DYNAMIC_WINDOW - __u32 line_capacity; /* Number of bytes allowed to send */ - __u32 bytes_left; /* Number of bytes still allowed to transmit */ -#endif /* CONFIG_IRDA_DYNAMIC_WINDOW */ - - struct sk_buff_head wx_list; - - __u8 ack_required; - - /* XID parameters */ - __u8 S; /* Number of slots */ - __u8 slot; /* Random chosen slot */ - __u8 s; /* Current slot */ - int frame_sent; /* Have we sent reply? */ - - hashbin_t *discovery_log; - discovery_t *discovery_cmd; - - __u32 speed; /* Link speed */ - - struct qos_info qos_tx; /* QoS requested by peer */ - struct qos_info qos_rx; /* QoS requested by self */ - struct qos_info *qos_dev; /* QoS supported by device */ - - notify_t notify; /* Callbacks to IrLMP */ - - int mtt_required; /* Minimum turnaround time required */ - int xbofs_delay; /* Nr of XBOF's used to MTT */ - int bofs_count; /* Negotiated extra BOFs */ - int next_bofs; /* Negotiated extra BOFs after next frame */ - - int mode; /* IrLAP mode (primary, secondary or monitor) */ -}; - -/* - * Function prototypes - */ -int irlap_init(void); -void irlap_cleanup(void); - -struct irlap_cb *irlap_open(struct net_device *dev, struct qos_info *qos, - const char *hw_name); -void irlap_close(struct irlap_cb *self); - -void irlap_connect_request(struct irlap_cb *self, __u32 daddr, - struct qos_info *qos, int sniff); -void irlap_connect_response(struct irlap_cb *self, struct sk_buff *skb); -void irlap_connect_indication(struct irlap_cb *self, struct sk_buff *skb); -void irlap_connect_confirm(struct irlap_cb *, struct sk_buff *skb); - -void irlap_data_indication(struct irlap_cb *, struct sk_buff *, int unreliable); -void irlap_data_request(struct irlap_cb *, struct sk_buff *, int unreliable); - -#ifdef CONFIG_IRDA_ULTRA -void irlap_unitdata_request(struct irlap_cb *, struct sk_buff *); -void irlap_unitdata_indication(struct irlap_cb *, struct sk_buff *); -#endif /* CONFIG_IRDA_ULTRA */ - -void irlap_disconnect_request(struct irlap_cb *); -void irlap_disconnect_indication(struct irlap_cb *, LAP_REASON reason); - -void irlap_status_indication(struct irlap_cb *, int quality_of_link); - -void irlap_test_request(__u8 *info, int len); - -void irlap_discovery_request(struct irlap_cb *, discovery_t *discovery); -void irlap_discovery_confirm(struct irlap_cb *, hashbin_t *discovery_log); -void irlap_discovery_indication(struct irlap_cb *, discovery_t *discovery); - -void irlap_reset_indication(struct irlap_cb *self); -void irlap_reset_confirm(void); - -void irlap_update_nr_received(struct irlap_cb *, int nr); -int irlap_validate_nr_received(struct irlap_cb *, int nr); -int irlap_validate_ns_received(struct irlap_cb *, int ns); - -int irlap_generate_rand_time_slot(int S, int s); -void irlap_initiate_connection_state(struct irlap_cb *); -void irlap_flush_all_queues(struct irlap_cb *); -void irlap_wait_min_turn_around(struct irlap_cb *, struct qos_info *); - -void irlap_apply_default_connection_parameters(struct irlap_cb *self); -void irlap_apply_connection_parameters(struct irlap_cb *self, int now); - -#define IRLAP_GET_HEADER_SIZE(self) (LAP_MAX_HEADER) -#define IRLAP_GET_TX_QUEUE_LEN(self) skb_queue_len(&self->txq) - -/* Return TRUE if the node is in primary mode (i.e. master) - * - Jean II */ -static inline int irlap_is_primary(struct irlap_cb *self) -{ - int ret; - switch(self->state) { - case LAP_XMIT_P: - case LAP_NRM_P: - ret = 1; - break; - case LAP_XMIT_S: - case LAP_NRM_S: - ret = 0; - break; - default: - ret = -1; - } - return ret; -} - -/* Clear a pending IrLAP disconnect. - Jean II */ -static inline void irlap_clear_disconnect(struct irlap_cb *self) -{ - self->disconnect_pending = FALSE; -} - -/* - * Function irlap_next_state (self, state) - * - * Switches state and provides debug information - * - */ -static inline void irlap_next_state(struct irlap_cb *self, IRLAP_STATE state) -{ - /* - if (!self || self->magic != LAP_MAGIC) - return; - - pr_debug("next LAP state = %s\n", irlap_state[state]); - */ - self->state = state; -} - -#endif |