include/net/irda/irlap_frame.h

   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) */
  39 struct irlap_cb;
  40 struct 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
  83 struct disc_frame {
  84         __u8 caddr;          /* Connection address */
  85         __u8 control;
  86 } __packed;
  87
  88 struct 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
  99 struct 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
 106 struct ua_frame {
 107         __u8 caddr;
 108         __u8 control;
 109         __le32 saddr; /* Source device address */
 110         __le32 daddr; /* Dest device address */
 111 } __packed;
 112
 113 struct dm_frame {
 114         __u8 caddr;          /* Connection address */
 115         __u8 control;
 116 } __packed;
 117
 118 struct rd_frame {
 119         __u8 caddr;          /* Connection address */
 120         __u8 control;
 121 } __packed;
 122
 123 struct rr_frame {
 124         __u8 caddr;          /* Connection address */
 125         __u8 control;
 126 } __packed;
 127
 128 struct i_frame {
 129         __u8 caddr;
 130         __u8 control;
 131 } __packed;
 132
 133 struct snrm_frame {
 134         __u8  caddr;
 135         __u8  control;
 136         __le32 saddr;
 137         __le32 daddr;
 138         __u8  ncaddr;
 139 } __packed;
 140
 141 void irlap_queue_xmit(struct irlap_cb *self, struct sk_buff *skb);
 142 void irlap_send_discovery_xid_frame(struct irlap_cb *, int S, __u8 s,
 143                                     __u8 command,
 144                                     struct discovery_t *discovery);
 145 void irlap_send_snrm_frame(struct irlap_cb *, struct qos_info *);
 146 void irlap_send_test_frame(struct irlap_cb *self, __u8 caddr, __u32 daddr,
 147                            struct sk_buff *cmd);
 148 void irlap_send_ua_response_frame(struct irlap_cb *, struct qos_info *);
 149 void irlap_send_dm_frame(struct irlap_cb *self);
 150 void irlap_send_rd_frame(struct irlap_cb *self);
 151 void irlap_send_disc_frame(struct irlap_cb *self);
 152 void irlap_send_rr_frame(struct irlap_cb *self, int command);
 153
 154 void irlap_send_data_primary(struct irlap_cb *, struct sk_buff *);
 155 void irlap_send_data_primary_poll(struct irlap_cb *, struct sk_buff *);
 156 void irlap_send_data_secondary(struct irlap_cb *, struct sk_buff *);
 157 void irlap_send_data_secondary_final(struct irlap_cb *, struct sk_buff *);
 158 void irlap_resend_rejected_frames(struct irlap_cb *, int command);
 159 void irlap_resend_rejected_frame(struct irlap_cb *self, int command);
 160
 161 void irlap_send_ui_frame(struct irlap_cb *self, struct sk_buff *skb,
 162                          __u8 caddr, int command);
 163
 164 int irlap_insert_qos_negotiation_params(struct irlap_cb *self,
 165                                         struct sk_buff *skb);
 166
 167 #endif