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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 | /********************************************************************* * * 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: Tue Nov 16 10:00:36 1999 * Modified by: Dag Brattli <dagb@cs.uit.no> * * 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. * ********************************************************************/ #ifndef IRLAP_H #define IRLAP_H #include <linux/config.h> #include <linux/types.h> #include <linux/skbuff.h> #include <linux/netdevice.h> #include <linux/ppp_defs.h> #include <linux/ppp-comp.h> #include <linux/timer.h> #include <net/irda/irlap_event.h> #define LAP_RELIABLE 1 #define LAP_UNRELIABLE 0 #define LAP_ADDR_HEADER 1 /* IrLAP Address Header */ #define LAP_CTRL_HEADER 1 /* IrLAP Control Header */ #define LAP_COMP_HEADER 1 /* IrLAP Compression Header */ #ifdef CONFIG_IRDA_COMPRESSION # define LAP_MAX_HEADER (LAP_ADDR_HEADER + LAP_CTRL_HEADER + LAP_COMP_HEADER) # define IRDA_COMPRESSED 1 # define IRDA_NORMAL 0 #else #define LAP_MAX_HEADER (LAP_ADDR_HEADER + LAP_CTRL_HEADER) #endif #define BROADCAST 0xffffffff /* Broadcast device address */ #define CBROADCAST 0xfe /* Connection broadcast address */ #define XID_FORMAT 0x01 /* Discovery XID format */ #define LAP_WINDOW_SIZE 8 #define LAP_MAX_QUEUE 10 #define NR_EXPECTED 1 #define NR_UNEXPECTED 0 #define NR_INVALID -1 #define NS_EXPECTED 1 #define NS_UNEXPECTED 0 #define NS_INVALID -1 #ifdef CONFIG_IRDA_COMPRESSION /* * Just some shortcuts (may give you strange compiler errors if you change * them :-) */ #define irda_compress (*self->compessor.cp->compress) #define irda_comp_free (*self->compressor.cp->comp_free) #define irda_decompress (*self->decompressor.cp->decompress) #define irda_decomp_free (*self->decompressor.cp->decomp_free) #define irda_incomp (*self->decompressor.cp->incomp) struct irda_compressor { queue_t q; struct compressor *cp; void *state; /* Not used by IrDA */ }; #endif /* Main structure of IrLAP */ struct irlap_cb { queue_t q; /* Must be first */ magic_t magic; struct net_device *netdev; /* 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 tx_list; /* Frames to be transmitted */ __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 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 */ __u32 window_bytes; /* Number of bytes allowed to send */ __u32 bytes_left; /* Number of bytes allowed to transmit */ 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; 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; /* Minumum turnaround time required */ int xbofs_delay; /* Nr of XBOF's used to MTT */ int bofs_count; /* Negotiated extra BOFs */ #ifdef CONFIG_IRDA_COMPRESSION struct irda_compressor compressor; struct irda_compressor decompressor; #endif }; extern hashbin_t *irlap; /* * Function prototypes */ int irlap_init(void); void irlap_cleanup(void); struct irlap_cb *irlap_open(struct net_device *dev, struct qos_info *qos); 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 *); void irlap_unit_data_indication(struct irlap_cb *, struct sk_buff *); void irlap_data_request(struct irlap_cb *, struct sk_buff *, int reliable); void irlap_disconnect_request(struct irlap_cb *); void irlap_disconnect_indication(struct irlap_cb *, LAP_REASON reason); void irlap_status_indication(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_change_speed(struct irlap_cb *self, __u32 speed, int now); void irlap_wait_min_turn_around(struct irlap_cb *, struct qos_info *); void irlap_init_qos_capabilities(struct irlap_cb *, struct qos_info *); void irlap_apply_default_connection_parameters(struct irlap_cb *self); void irlap_apply_connection_parameters(struct irlap_cb *, struct qos_info *); void irlap_set_local_busy(struct irlap_cb *self, int status); #define IRLAP_GET_HEADER_SIZE(self) 2 /* Will be different when we get VFIR */ #define IRLAP_GET_TX_QUEUE_LEN(self) skb_queue_len(&self->tx_list) #endif |