LXR linux/include/net/irda/irlap

   1/*********************************************************************
   2 *                
   3 * Filename:      irlap_frame.h
   4 * Version:       0.9
   5 * Description:   IrLAP frame declarations
   6 * Status:        Experimental.
   7 * Author:        Dag Brattli <dagb@cs.uit.no>
   8 * Created at:    Tue Aug 19 10:27:26 1997
   9 * Modified at:   Sat Dec 25 21:07:26 1999
  10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11 * 
  12 *     Copyright (c) 1997-1999 Dag Brattli <dagb@cs.uit.no>,
  13 *     All Rights Reserved.
  14 *     Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com>
  15 *     
  16 *     This program is free software; you can redistribute it and/or 
  17 *     modify it under the terms of the GNU General Public License as 
  18 *     published by the Free Software Foundation; either version 2 of 
  19 *     the License, or (at your option) any later version.
  20 * 
  21 *     This program is distributed in the hope that it will be useful,
  22 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  24 *     GNU General Public License for more details.
  25 * 
  26 *     You should have received a copy of the GNU General Public License 
  27 *     along with this program; if not, see <http://www.gnu.org/licenses/>.
  28 *     
  29 ********************************************************************/
  30
  31#ifndef IRLAP_FRAME_H
  32#define IRLAP_FRAME_H
  33
  34#include <linux/skbuff.h>
  35
  36#include <net/irda/irda.h>
  37
  38/* A few forward declarations (to make compiler happy) */
  39struct irlap_cb;
  40struct discovery_t;
  41
  42/* Frame types and templates */
  43#define INVALID   0xff
  44
  45/* Unnumbered (U) commands */
  46#define SNRM_CMD  0x83 /* Set Normal Response Mode */
  47#define DISC_CMD  0x43 /* Disconnect */
  48#define XID_CMD   0x2f /* Exchange Station Identification */
  49#define TEST_CMD  0xe3 /* Test */
  50
  51/* Unnumbered responses */
  52#define RNRM_RSP  0x83 /* Request Normal Response Mode */
  53#define UA_RSP    0x63 /* Unnumbered Acknowledgement */
  54#define FRMR_RSP  0x87 /* Frame Reject */
  55#define DM_RSP    0x0f /* Disconnect Mode */
  56#define RD_RSP    0x43 /* Request Disconnection */
  57#define XID_RSP   0xaf /* Exchange Station Identification */
  58#define TEST_RSP  0xe3 /* Test frame */
  59
  60/* Supervisory (S) */
  61#define RR        0x01 /* Receive Ready */
  62#define REJ       0x09 /* Reject */
  63#define RNR       0x05 /* Receive Not Ready */
  64#define SREJ      0x0d /* Selective Reject */
  65
  66/* Information (I) */
  67#define I_FRAME   0x00 /* Information Format */
  68#define UI_FRAME  0x03 /* Unnumbered Information */
  69
  70#define CMD_FRAME 0x01
  71#define RSP_FRAME 0x00
  72
  73#define PF_BIT    0x10 /* Poll/final bit */
  74
  75/* Some IrLAP field lengths */
  76/*
  77 * Only baud rate triplet is 4 bytes (PV can be 2 bytes).
  78 * All others params (7) are 3 bytes, so that's 7*3 + 1*4 bytes.
  79 */
  80#define IRLAP_NEGOCIATION_PARAMS_LEN 25
  81#define IRLAP_DISCOVERY_INFO_LEN     32
  82
  83struct disc_frame {
  84        __u8 caddr;          /* Connection address */
  85        __u8 control;
  86} __packed;
  87
  88struct xid_frame {
  89        __u8  caddr; /* Connection address */
  90        __u8  control;
  91        __u8  ident; /* Should always be XID_FORMAT */ 
  92        __le32 saddr; /* Source device address */
  93        __le32 daddr; /* Destination device address */
  94        __u8  flags; /* Discovery flags */
  95        __u8  slotnr;
  96        __u8  version;
  97} __packed;
  98
  99struct test_frame {
 100        __u8 caddr;          /* Connection address */
 101        __u8 control;
 102        __le32 saddr;         /* Source device address */
 103        __le32 daddr;         /* Destination device address */
 104} __packed;
 105
 106struct ua_frame {
 107        __u8 caddr;
 108        __u8 control;
 109        __le32 saddr; /* Source device address */
 110        __le32 daddr; /* Dest device address */
 111} __packed;
 112
 113struct dm_frame {
 114        __u8 caddr;          /* Connection address */
 115        __u8 control;
 116} __packed;
 117
 118struct rd_frame {
 119        __u8 caddr;          /* Connection address */
 120        __u8 control;
 121} __packed;
 122
 123struct rr_frame {
 124        __u8 caddr;          /* Connection address */
 125        __u8 control;
 126} __packed;
 127
 128struct i_frame {
 129        __u8 caddr;
 130        __u8 control;
 131} __packed;
 132
 133struct snrm_frame {
 134        __u8  caddr;
 135        __u8  control;
 136        __le32 saddr;
 137        __le32 daddr;
 138        __u8  ncaddr;
 139} __packed;
 140
 141void irlap_queue_xmit(struct irlap_cb *self, struct sk_buff *skb);
 142void irlap_send_discovery_xid_frame(struct irlap_cb *, int S, __u8 s, 
 143                                    __u8 command,
 144                                    struct discovery_t *discovery);
 145void irlap_send_snrm_frame(struct irlap_cb *, struct qos_info *);
 146void irlap_send_test_frame(struct irlap_cb *self, __u8 caddr, __u32 daddr, 
 147                           struct sk_buff *cmd);
 148void irlap_send_ua_response_frame(struct irlap_cb *, struct qos_info *);
 149void irlap_send_dm_frame(struct irlap_cb *self);
 150void irlap_send_rd_frame(struct irlap_cb *self);
 151void irlap_send_disc_frame(struct irlap_cb *self);
 152void irlap_send_rr_frame(struct irlap_cb *self, int command);
 153
 154void irlap_send_data_primary(struct irlap_cb *, struct sk_buff *);
 155void irlap_send_data_primary_poll(struct irlap_cb *, struct sk_buff *);
 156void irlap_send_data_secondary(struct irlap_cb *, struct sk_buff *);
 157void irlap_send_data_secondary_final(struct irlap_cb *, struct sk_buff *);
 158void irlap_resend_rejected_frames(struct irlap_cb *, int command);
 159void irlap_resend_rejected_frame(struct irlap_cb *self, int command);
 160
 161void irlap_send_ui_frame(struct irlap_cb *self, struct sk_buff *skb,
 162                         __u8 caddr, int command);
 163
 164int irlap_insert_qos_negotiation_params(struct irlap_cb *self,
 165                                        struct sk_buff *skb);
 166
 167#endif
 168