@@ -407,6 +407,28 @@ struct wpa_driver_scan_params {
*/
const u8 *mac_addr_mask;
+ /**
+ * sched_scan_plans - scan plans for scheduled scan
+ *
+ * Each scan plan consists of the number of iterations to scan and the
+ * interval between scans. When a scan plan finishes (i.e., it was run
+ * for the specified number of iterations), the next scan plan is
+ * executed. The scan plans are executed in the order they appear in
+ * the array (lower index first). The last scan plan will run infinitely
+ * (until requested to stop), thus must not specify the number of
+ * iterations. All other scan plans must specify the number of
+ * iterations.
+ */
+ struct sched_scan_plan {
+ u32 interval; /* in seconds */
+ u32 iterations; /* Zero to run infinitely */
+ } *sched_scan_plans;
+
+ /**
+ * sched_scan_plans_num - number of scan plans in sched_scan_plans array
+ */
+ size_t sched_scan_plans_num;
+
/*
* NOTE: Whenever adding new parameters here, please make sure
* wpa_scan_clone_params() and wpa_scan_free_params() get updated with
@@ -1233,6 +1255,15 @@ struct wpa_driver_capa {
/** Maximum number of supported active probe SSIDs for sched_scan */
int max_sched_scan_ssids;
+ /** Maximum number of supported scan plans for scheduled scan */
+ size_t max_sched_scan_plans;
+
+ /** Maximum interval in a scan plan. In seconds */
+ u32 max_sched_scan_plan_interval;
+
+ /** Maximum number of iterations in a single scan plan */
+ u32 max_sched_scan_plan_iterations;
+
/** Whether sched_scan (offloaded scanning) is supported */
int sched_scan_supported;
@@ -2994,7 +3025,6 @@ struct wpa_driver_ops {
* sched_scan - Request the driver to initiate scheduled scan
* @priv: Private driver interface data
* @params: Scan parameters
- * @interval: Interval between scan cycles in milliseconds
* Returns: 0 on success, -1 on failure
*
* This operation should be used for scheduled scan offload to
@@ -3005,8 +3035,7 @@ struct wpa_driver_ops {
* and if not provided or if it returns -1, we fall back to
* normal host-scheduled scans.
*/
- int (*sched_scan)(void *priv, struct wpa_driver_scan_params *params,
- u32 interval);
+ int (*sched_scan)(void *priv, struct wpa_driver_scan_params *params);
/**
* stop_sched_scan - Request the driver to stop a scheduled scan
@@ -7540,7 +7540,10 @@ static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
"capa.mac_addr_rand_scan_supported=%d\n"
"capa.conc_capab=%u\n"
"capa.max_conc_chan_2_4=%u\n"
- "capa.max_conc_chan_5_0=%u\n",
+ "capa.max_conc_chan_5_0=%u\n"
+ "capa.max_sched_scan_plans=%zu\n"
+ "capa.max_sched_scan_plan_interval=%u\n"
+ "capa.max_sched_scan_plan_iterations=%u\n",
drv->capa.key_mgmt,
drv->capa.enc,
drv->capa.auth,
@@ -7559,7 +7562,10 @@ static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
drv->capa.mac_addr_rand_scan_supported,
drv->capa.conc_capab,
drv->capa.max_conc_chan_2_4,
- drv->capa.max_conc_chan_5_0);
+ drv->capa.max_conc_chan_5_0,
+ drv->capa.max_sched_scan_plans,
+ drv->capa.max_sched_scan_plan_interval,
+ drv->capa.max_sched_scan_plan_iterations);
if (os_snprintf_error(end - pos, res))
return pos - buf;
pos += res;
@@ -276,8 +276,7 @@ void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx);
int wpa_driver_nl80211_scan(struct i802_bss *bss,
struct wpa_driver_scan_params *params);
int wpa_driver_nl80211_sched_scan(void *priv,
- struct wpa_driver_scan_params *params,
- u32 interval);
+ struct wpa_driver_scan_params *params);
int wpa_driver_nl80211_stop_sched_scan(void *priv);
struct wpa_scan_results * wpa_driver_nl80211_get_scan_results(void *priv);
void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv);
@@ -499,6 +499,19 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
capa->max_sched_scan_ssids =
nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
+ if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS] &&
+ tb[NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL] &&
+ tb[NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS]) {
+ capa->max_sched_scan_plans =
+ nla_get_u32(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS]);
+
+ capa->max_sched_scan_plan_interval =
+ nla_get_u32(tb[NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL]);
+
+ capa->max_sched_scan_plan_iterations =
+ nla_get_u32(tb[NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS]);
+ }
+
if (tb[NL80211_ATTR_MAX_MATCH_SETS])
capa->max_match_sets =
nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
@@ -711,6 +724,12 @@ static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
drv->capa.max_csa_counters = 1;
}
+ if (!drv->capa.max_sched_scan_plans) {
+ drv->capa.max_sched_scan_plans = 1;
+ drv->capa.max_sched_scan_plan_interval = UINT32_MAX;
+ drv->capa.max_sched_scan_plan_iterations = 0;
+ }
+
return 0;
}
@@ -1,5 +1,6 @@
/*
* Driver interaction with Linux nl80211/cfg80211 - Scanning
+ * Copyright(c) 2015 Intel Deutschland GmbH
* Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
* Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
* Copyright (c) 2009-2010, Atheros Communications
@@ -307,17 +308,81 @@ fail:
return ret;
}
+static int
+nl80211_sched_scan_add_scan_plans(struct wpa_driver_nl80211_data *drv,
+ struct nl_msg *msg,
+ struct wpa_driver_scan_params *params)
+{
+ struct nlattr *plans;
+ struct sched_scan_plan *scan_plans = params->sched_scan_plans;
+ size_t i;
+
+ plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
+ if (!plans)
+ return -1;
+
+ for (i = 0; i < params->sched_scan_plans_num; i++) {
+ struct nlattr *plan = nla_nest_start(msg, i + 1);
+
+ if (!plan)
+ return -1;
+
+ if (!scan_plans[i].interval ||
+ scan_plans[i].interval >
+ drv->capa.max_sched_scan_plan_interval) {
+ wpa_printf(MSG_DEBUG,
+ "nl80211: scan plan no. %zu: Invalid interval: %u",
+ i, scan_plans[i].interval);
+ return -1;
+ }
+
+ if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
+ scan_plans[i].interval))
+ return -1;
+
+ if (scan_plans[i].iterations >
+ drv->capa.max_sched_scan_plan_iterations) {
+ wpa_printf(MSG_DEBUG,
+ "nl80211: scan plan no. %zu: Invalid number of iterations: %u",
+ i, scan_plans[i].iterations);
+ return -1;
+ }
+
+ if (scan_plans[i].iterations &&
+ nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
+ scan_plans[i].iterations))
+ return -1;
+
+ nla_nest_end(msg, plan);
+
+ /*
+ * All the scan plans must specify the number of iterations
+ * except the last plan, which will run infinitely. So if the
+ * number of iterations is not specified, this ought to be the
+ * last scan plan.
+ */
+ if (!scan_plans[i].iterations)
+ break;
+ }
+
+ if (i != params->sched_scan_plans_num - 1) {
+ wpa_printf(MSG_DEBUG,
+ "nl80211: All scan plans but the last must specify number of iterations");
+ return -1;
+ }
+
+ nla_nest_end(msg, plans);
+ return 0;
+}
/**
* wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
* @priv: Pointer to private driver data from wpa_driver_nl80211_init()
* @params: Scan parameters
- * @interval: Interval between scan cycles in milliseconds
* Returns: 0 on success, -1 on failure or if not supported
*/
int wpa_driver_nl80211_sched_scan(void *priv,
- struct wpa_driver_scan_params *params,
- u32 interval)
+ struct wpa_driver_scan_params *params)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
@@ -332,11 +397,27 @@ int wpa_driver_nl80211_sched_scan(void *priv,
return android_pno_start(bss, params);
#endif /* ANDROID */
+ if (!params->sched_scan_plans_num ||
+ params->sched_scan_plans_num > drv->capa.max_sched_scan_plans) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: Invalid number of scan plans: %zu",
+ params->sched_scan_plans_num);
+ return -1;
+ }
+
msg = nl80211_scan_common(bss, NL80211_CMD_START_SCHED_SCAN, params);
- if (!msg ||
- nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval))
+ if (!msg)
goto fail;
+ if (drv->capa.max_sched_scan_plan_iterations) {
+ if (nl80211_sched_scan_add_scan_plans(drv, msg, params))
+ goto fail;
+ } else {
+ if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
+ params->sched_scan_plans[0].interval * 1000))
+ goto fail;
+ }
+
if ((drv->num_filter_ssids &&
(int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
params->filter_rssi) {
@@ -399,8 +480,7 @@ int wpa_driver_nl80211_sched_scan(void *priv,
goto fail;
}
- wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
- "scan interval %d msec", ret, interval);
+ wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - ", ret);
fail:
nlmsg_free(msg);
@@ -100,12 +100,10 @@ static inline int wpa_drv_scan(struct wpa_supplicant *wpa_s,
}
static inline int wpa_drv_sched_scan(struct wpa_supplicant *wpa_s,
- struct wpa_driver_scan_params *params,
- u32 interval)
+ struct wpa_driver_scan_params *params)
{
if (wpa_s->driver->sched_scan)
- return wpa_s->driver->sched_scan(wpa_s->drv_priv,
- params, interval);
+ return wpa_s->driver->sched_scan(wpa_s->drv_priv, params);
return -1;
}
@@ -271,14 +271,23 @@ int wpa_supplicant_start_sched_scan(struct wpa_supplicant *wpa_s,
int interval)
{
int ret;
+ struct sched_scan_plan scan_plan = {
+ .interval = interval,
+ .iterations = 0,
+ };
+
+ params->sched_scan_plans = &scan_plan;
+ params->sched_scan_plans_num = 1;
wpa_supplicant_notify_scanning(wpa_s, 1);
- ret = wpa_drv_sched_scan(wpa_s, params, interval * 1000);
+ ret = wpa_drv_sched_scan(wpa_s, params);
if (ret)
wpa_supplicant_notify_scanning(wpa_s, 0);
else
wpa_s->sched_scanning = 1;
+ params->sched_scan_plans = NULL;
+ params->sched_scan_plans_num = 0;
return ret;
}
@@ -2217,6 +2226,19 @@ wpa_scan_clone_params(const struct wpa_driver_scan_params *src)
params->only_new_results = src->only_new_results;
params->low_priority = src->low_priority;
+ if (src->sched_scan_plans_num > 0) {
+ params->sched_scan_plans =
+ os_malloc(sizeof(*src->sched_scan_plans) *
+ src->sched_scan_plans_num);
+ if (!params->sched_scan_plans)
+ goto failed;
+
+ os_memcpy(params->sched_scan_plans, src->sched_scan_plans,
+ sizeof(*src->sched_scan_plans) *
+ src->sched_scan_plans_num);
+ params->sched_scan_plans_num = src->sched_scan_plans_num;
+ }
+
if (src->mac_addr_rand) {
params->mac_addr_rand = src->mac_addr_rand;
@@ -2254,6 +2276,7 @@ void wpa_scan_free_params(struct wpa_driver_scan_params *params)
os_free((u8 *) params->extra_ies);
os_free(params->freqs);
os_free(params->filter_ssids);
+ os_free(params->sched_scan_plans);
/*
* Note: params->mac_addr_mask points to same memory allocation and