1 /*
2 * Copyright (c) 2016-2019 The Linux Foundation. All rights reserved.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for
5 * any purpose with or without fee is hereby granted, provided that the
6 * above copyright notice and this permission notice appear in all
7 * copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
16 * PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 /**
20 * DOC: lim_roam_timer_utils.c
21 *
22 * Host based roaming timers implementation
23 */
24
25 #include "lim_types.h"
26 #include "lim_utils.h"
27 #include "lim_assoc_utils.h"
28 #include "lim_security_utils.h"
29
30 /**
31 * lim_create_timers_host_roam() - Create timers used in host based roaming
32 * @mac_ctx: Global MAC context
33 *
34 * Create reassoc and preauth timers
35 *
36 * Return: TX_SUCCESS or TX_TIMER_ERROR
37 */
lim_create_timers_host_roam(struct mac_context * mac_ctx)38 uint32_t lim_create_timers_host_roam(struct mac_context *mac_ctx)
39 {
40 uint32_t cfg_value;
41
42 cfg_value = SYS_MS_TO_TICKS(
43 mac_ctx->mlme_cfg->timeouts.reassoc_failure_timeout);
44 /* Create Association failure timer and activate it later */
45 if (tx_timer_create(mac_ctx,
46 &mac_ctx->lim.lim_timers.gLimReassocFailureTimer,
47 "REASSOC FAILURE TIMEOUT", lim_assoc_failure_timer_handler,
48 LIM_REASSOC, cfg_value, 0, TX_NO_ACTIVATE) != TX_SUCCESS) {
49 pe_err("failed to create Reassoc timer");
50 return TX_TIMER_ERROR;
51 }
52 cfg_value = 1000;
53 cfg_value = SYS_MS_TO_TICKS(cfg_value);
54 if (tx_timer_create(mac_ctx,
55 &mac_ctx->lim.lim_timers.gLimFTPreAuthRspTimer,
56 "FT PREAUTH RSP TIMEOUT",
57 lim_timer_handler, SIR_LIM_FT_PREAUTH_RSP_TIMEOUT,
58 cfg_value, 0, TX_NO_ACTIVATE) != TX_SUCCESS) {
59 pe_err("failed to create Join fail timer");
60 goto err_roam_timer;
61 }
62 return TX_SUCCESS;
63
64 err_roam_timer:
65 tx_timer_delete(&mac_ctx->lim.lim_timers.gLimReassocFailureTimer);
66 return TX_TIMER_ERROR;
67 }
68
lim_delete_timers_host_roam(struct mac_context * mac_ctx)69 void lim_delete_timers_host_roam(struct mac_context *mac_ctx)
70 {
71 tLimTimers *lim_timer = &mac_ctx->lim.lim_timers;
72
73 /* Delete Reassociation failure timer. */
74 tx_timer_delete(&lim_timer->gLimReassocFailureTimer);
75 /* Delete FT Preauth response timer */
76 tx_timer_delete(&lim_timer->gLimFTPreAuthRspTimer);
77 }
78
lim_deactivate_timers_host_roam(struct mac_context * mac_ctx)79 void lim_deactivate_timers_host_roam(struct mac_context *mac_ctx)
80 {
81 tLimTimers *lim_timer = &mac_ctx->lim.lim_timers;
82
83 /* Deactivate Reassociation failure timer. */
84 tx_timer_deactivate(&lim_timer->gLimReassocFailureTimer);
85 /* Deactivate FT Preauth response timer */
86 tx_timer_deactivate(&lim_timer->gLimFTPreAuthRspTimer);
87 }
88
89 /**
90 * lim_deactivate_and_change_timer_host_roam() - Change timers in host roaming
91 * @mac_ctx: Pointer to Global MAC structure
92 * @timer_id: enum of timer to be deactivated and changed
93 *
94 * This function is called to deactivate and change a timer for future
95 * re-activation for host roaming timers.
96 *
97 * Return: None
98 */
lim_deactivate_and_change_timer_host_roam(struct mac_context * mac_ctx,uint32_t timer_id)99 void lim_deactivate_and_change_timer_host_roam(struct mac_context *mac_ctx,
100 uint32_t timer_id)
101 {
102 uint32_t val = 0;
103
104 switch (timer_id) {
105 case eLIM_REASSOC_FAIL_TIMER:
106 if (tx_timer_deactivate
107 (&mac_ctx->lim.lim_timers.gLimReassocFailureTimer) !=
108 TX_SUCCESS)
109 pe_warn("unable to deactivate Reassoc fail timer");
110
111 val = SYS_MS_TO_TICKS(
112 mac_ctx->mlme_cfg->timeouts.reassoc_failure_timeout);
113 if (tx_timer_change
114 (&mac_ctx->lim.lim_timers.gLimReassocFailureTimer, val,
115 0) != TX_SUCCESS)
116 pe_warn("unable to change Reassoc fail timer");
117 break;
118
119 case eLIM_FT_PREAUTH_RSP_TIMER:
120 if (tx_timer_deactivate
121 (&mac_ctx->lim.lim_timers.gLimFTPreAuthRspTimer) !=
122 TX_SUCCESS) {
123 pe_err("Unable to deactivate Preauth Fail timer");
124 return;
125 }
126 val = 1000;
127 val = SYS_MS_TO_TICKS(val);
128 if (tx_timer_change(
129 &mac_ctx->lim.lim_timers.gLimFTPreAuthRspTimer,
130 val, 0) != TX_SUCCESS) {
131 pe_err("Unable to change Join Failure timer");
132 return;
133 }
134 break;
135 }
136 }
137
138