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