1 /*
2  * FST module - miscellaneous definitions
3  * Copyright (c) 2014, Qualcomm Atheros, Inc.
4  *
5  * This software may be distributed under the terms of the BSD license.
6  * See README for more details.
7  */
8 
9 #ifndef FST_CTRL_AUX_H
10 #define FST_CTRL_AUX_H
11 
12 #include "common/defs.h"
13 
14 /* FST module control interface API */
15 #define FST_INVALID_SESSION_ID ((u32) -1)
16 #define FST_MAX_GROUP_ID_SIZE   32
17 #define FST_MAX_INTERFACE_SIZE  32
18 
19 enum fst_session_state {
20 	FST_SESSION_STATE_INITIAL,
21 	FST_SESSION_STATE_SETUP_COMPLETION,
22 	FST_SESSION_STATE_TRANSITION_DONE,
23 	FST_SESSION_STATE_TRANSITION_CONFIRMED,
24 	FST_SESSION_STATE_LAST
25 };
26 
27 enum fst_event_type {
28 	EVENT_FST_IFACE_STATE_CHANGED,  /* An interface has been either attached
29 					 * to or detached from an FST group */
30 	EVENT_FST_ESTABLISHED,          /* FST Session has been established */
31 	EVENT_FST_SETUP,                /* FST Session request received */
32 	EVENT_FST_SESSION_STATE_CHANGED,/* FST Session state has been changed */
33 	EVENT_PEER_STATE_CHANGED        /* FST related generic event occurred,
34 					 * see struct fst_hostap_event_data for
35 					 *  more info */
36 };
37 
38 enum fst_reason {
39 	REASON_TEARDOWN,
40 	REASON_SETUP,
41 	REASON_SWITCH,
42 	REASON_STT,
43 	REASON_REJECT,
44 	REASON_ERROR_PARAMS,
45 	REASON_RESET,
46 	REASON_DETACH_IFACE,
47 };
48 
49 enum fst_initiator {
50 	FST_INITIATOR_UNDEFINED,
51 	FST_INITIATOR_LOCAL,
52 	FST_INITIATOR_REMOTE,
53 };
54 
55 union fst_event_extra {
56 	struct fst_event_extra_iface_state {
57 		bool attached;
58 		char ifname[FST_MAX_INTERFACE_SIZE];
59 		char group_id[FST_MAX_GROUP_ID_SIZE];
60 	} iface_state; /* for EVENT_FST_IFACE_STATE_CHANGED */
61 	struct fst_event_extra_peer_state {
62 		bool connected;
63 		char ifname[FST_MAX_INTERFACE_SIZE];
64 		u8 addr[ETH_ALEN];
65 	} peer_state; /* for EVENT_PEER_STATE_CHANGED */
66 	struct fst_event_extra_session_state {
67 		enum fst_session_state old_state;
68 		enum fst_session_state new_state;
69 		union fst_session_state_switch_extra {
70 			struct {
71 				enum fst_reason reason;
72 				u8 reject_code; /* REASON_REJECT */
73 				/* REASON_SWITCH,
74 				 * REASON_TEARDOWN,
75 				 * REASON_REJECT
76 				 */
77 				enum fst_initiator initiator;
78 			} to_initial;
79 		} extra;
80 	} session_state; /* for EVENT_FST_SESSION_STATE_CHANGED */
81 };
82 
83 /* helpers - prints enum in string form */
84 #define FST_NAME_UNKNOWN "UNKNOWN"
85 
86 const char * fst_get_str_name(unsigned index, const char *names[],
87 			      size_t names_size);
88 
89 const char * fst_session_event_type_name(enum fst_event_type);
90 const char * fst_reason_name(enum fst_reason reason);
91 const char * fst_session_state_name(enum fst_session_state state);
92 
93 #endif /* FST_CTRL_AUX_H */
94