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, write to the Free Software 
 28 *     Foundation, Inc., 59 Temple Place, Suite 330, Boston, 
 29 *     MA 02111-1307 USA
 30 *     
 31 ********************************************************************/
 32
 33#ifndef IRLAP_FRAME_H
 34#define IRLAP_FRAME_H
 35
 36#include <linux/skbuff.h>
 37
 38#include <net/irda/irda.h>
 39
 40/* A few forward declarations (to make compiler happy) */
 41struct irlap_cb;
 42struct discovery_t;
 43
 44/* Frame types and templates */
 45#define INVALID   0xff
 46
 47/* Unnumbered (U) commands */
 48#define SNRM_CMD  0x83 /* Set Normal Response Mode */
 49#define DISC_CMD  0x43 /* Disconnect */
 50#define XID_CMD   0x2f /* Exchange Station Identification */
 51#define TEST_CMD  0xe3 /* Test */
 52
 53/* Unnumbered responses */
 54#define RNRM_RSP  0x83 /* Request Normal Response Mode */
 55#define UA_RSP    0x63 /* Unnumbered Acknowledgement */
 56#define FRMR_RSP  0x87 /* Frame Reject */
 57#define DM_RSP    0x0f /* Disconnect Mode */
 58#define RD_RSP    0x43 /* Request Disconnection */
 59#define XID_RSP   0xaf /* Exchange Station Identification */
 60#define TEST_RSP  0xe3 /* Test frame */
 61
 62/* Supervisory (S) */
 63#define RR        0x01 /* Receive Ready */
 64#define REJ       0x09 /* Reject */
 65#define RNR       0x05 /* Receive Not Ready */
 66#define SREJ      0x0d /* Selective Reject */
 67
 68/* Information (I) */
 69#define I_FRAME   0x00 /* Information Format */
 70#define UI_FRAME  0x03 /* Unnumbered Information */
 71
 72#define CMD_FRAME 0x01
 73#define RSP_FRAME 0x00
 74
 75#define PF_BIT    0x10 /* Poll/final bit */
 76
 77/* Some IrLAP field lengths */
 78/*
 79 * Only baud rate triplet is 4 bytes (PV can be 2 bytes).
 80 * All others params (7) are 3 bytes, so that's 7*3 + 1*4 bytes.
 81 */
 82#define IRLAP_NEGOCIATION_PARAMS_LEN 25
 83#define IRLAP_DISCOVERY_INFO_LEN     32
 84
 85struct disc_frame {
 86	__u8 caddr;          /* Connection address */
 87	__u8 control;
 88} __packed;
 89
 90struct xid_frame {
 91	__u8  caddr; /* Connection address */
 92	__u8  control;
 93	__u8  ident; /* Should always be XID_FORMAT */ 
 94	__le32 saddr; /* Source device address */
 95	__le32 daddr; /* Destination device address */
 96	__u8  flags; /* Discovery flags */
 97	__u8  slotnr;
 98	__u8  version;
 99} __packed;
100
101struct test_frame {
102	__u8 caddr;          /* Connection address */
103	__u8 control;
104	__le32 saddr;         /* Source device address */
105	__le32 daddr;         /* Destination device address */
106} __packed;
107
108struct ua_frame {
109	__u8 caddr;
110	__u8 control;
111	__le32 saddr; /* Source device address */
112	__le32 daddr; /* Dest device address */
113} __packed;
114
115struct dm_frame {
116	__u8 caddr;          /* Connection address */
117	__u8 control;
118} __packed;
119
120struct rd_frame {
121	__u8 caddr;          /* Connection address */
122	__u8 control;
123} __packed;
124
125struct rr_frame {
126	__u8 caddr;          /* Connection address */
127	__u8 control;
128} __packed;
129
130struct i_frame {
131	__u8 caddr;
132	__u8 control;
133} __packed;
134
135struct snrm_frame {
136	__u8  caddr;
137	__u8  control;
138	__le32 saddr;
139	__le32 daddr;
140	__u8  ncaddr;
141} __packed;
142
143void irlap_queue_xmit(struct irlap_cb *self, struct sk_buff *skb);
144void irlap_send_discovery_xid_frame(struct irlap_cb *, int S, __u8 s, 
145				    __u8 command,
146				    struct discovery_t *discovery);
147void irlap_send_snrm_frame(struct irlap_cb *, struct qos_info *);
148void irlap_send_test_frame(struct irlap_cb *self, __u8 caddr, __u32 daddr, 
149			   struct sk_buff *cmd);
150void irlap_send_ua_response_frame(struct irlap_cb *, struct qos_info *);
151void irlap_send_dm_frame(struct irlap_cb *self);
152void irlap_send_rd_frame(struct irlap_cb *self);
153void irlap_send_disc_frame(struct irlap_cb *self);
154void irlap_send_rr_frame(struct irlap_cb *self, int command);
155
156void irlap_send_data_primary(struct irlap_cb *, struct sk_buff *);
157void irlap_send_data_primary_poll(struct irlap_cb *, struct sk_buff *);
158void irlap_send_data_secondary(struct irlap_cb *, struct sk_buff *);
159void irlap_send_data_secondary_final(struct irlap_cb *, struct sk_buff *);
160void irlap_resend_rejected_frames(struct irlap_cb *, int command);
161void irlap_resend_rejected_frame(struct irlap_cb *self, int command);
162
163void irlap_send_ui_frame(struct irlap_cb *self, struct sk_buff *skb,
164			 __u8 caddr, int command);
165
166extern int irlap_insert_qos_negotiation_params(struct irlap_cb *self, 
167					       struct sk_buff *skb);
168
169#endif