1 /*********************************************************************
2 *
3 *
4 * Filename: irlap_event.h
5 * Version: 0.1
6 * Description:
7 * Status: Experimental.
8 * Author: Dag Brattli <dagb@cs.uit.no>
9 * Created at: Sat Aug 16 00:59:29 1997
10 * Modified at: Tue Dec 21 11:20:30 1999
11 * Modified by: Dag Brattli <dagb@cs.uit.no>
12 *
13 * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
14 * All Rights Reserved.
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_EVENT_H
34 #define IRLAP_EVENT_H
35
36 #include <net/irda/irda.h>
37 #include <net/irda/discovery.h>
38
39 struct irlap_cb;
40
41 /* IrLAP States */
42 typedef enum {
43 LAP_NDM, /* Normal disconnected mode */
44 LAP_QUERY,
45 LAP_REPLY,
46 LAP_CONN, /* Connect indication */
47 LAP_SETUP, /* Setting up connection */
48 LAP_OFFLINE, /* A really boring state */
49 LAP_XMIT_P,
50 LAP_PCLOSE,
51 LAP_NRM_P, /* Normal response mode as primary */
52 LAP_RESET_WAIT,
53 LAP_RESET,
54 LAP_NRM_S, /* Normal response mode as secondary */
55 LAP_XMIT_S,
56 LAP_SCLOSE,
57 LAP_RESET_CHECK,
58 } IRLAP_STATE;
59
60 /* IrLAP Events */
61 typedef enum {
62 /* Services events */
63 DISCOVERY_REQUEST,
64 CONNECT_REQUEST,
65 CONNECT_RESPONSE,
66 DISCONNECT_REQUEST,
67 DATA_REQUEST,
68 RESET_REQUEST,
69 RESET_RESPONSE,
70
71 /* Send events */
72 SEND_I_CMD,
73 SEND_UI_FRAME,
74
75 /* Receive events */
76 RECV_DISCOVERY_XID_CMD,
77 RECV_DISCOVERY_XID_RSP,
78 RECV_SNRM_CMD,
79 RECV_TEST_CMD,
80 RECV_TEST_RSP,
81 RECV_UA_RSP,
82 RECV_DM_RSP,
83 RECV_RD_RSP,
84 RECV_I_CMD,
85 RECV_I_RSP,
86 RECV_UI_FRAME,
87 RECV_FRMR_RSP,
88 RECV_RR_CMD,
89 RECV_RR_RSP,
90 RECV_RNR_CMD,
91 RECV_RNR_RSP,
92 RECV_REJ_CMD,
93 RECV_REJ_RSP,
94 RECV_SREJ_CMD,
95 RECV_SREJ_RSP,
96 RECV_DISC_CMD,
97
98 /* Timer events */
99 SLOT_TIMER_EXPIRED,
100 QUERY_TIMER_EXPIRED,
101 FINAL_TIMER_EXPIRED,
102 POLL_TIMER_EXPIRED,
103 DISCOVERY_TIMER_EXPIRED,
104 WD_TIMER_EXPIRED,
105 BACKOFF_TIMER_EXPIRED,
106 } IRLAP_EVENT;
107
108 /*
109 * Various things used by the IrLAP state machine
110 */
111 struct irlap_info {
112 __u8 caddr; /* Connection address */
113 __u8 control; /* Frame type */
114 __u8 cmd;
115
116 __u32 saddr;
117 __u32 daddr;
118
119 int pf; /* Poll/final bit set */
120
121 __u8 nr; /* Sequence number of next frame expected */
122 __u8 ns; /* Sequence number of frame sent */
123
124 int S; /* Number of slots */
125 int slot; /* Random chosen slot */
126 int s; /* Current slot */
127
128 discovery_t *discovery; /* Discovery information */
129 };
130
131 extern const char *irlap_state[];
132
133 void irlap_do_event(struct irlap_cb *self, IRLAP_EVENT event,
134 struct sk_buff *skb, struct irlap_info *info);
135 void irlap_next_state(struct irlap_cb *self, IRLAP_STATE state);
136 void irlap_print_event(IRLAP_EVENT event);
137
138 extern int irlap_qos_negotiate(struct irlap_cb *self, struct sk_buff *skb);
139
140 #endif
141
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