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 168