* be intersected with the current one.
* @REG_REQ_ALREADY_SET: the regulatory request will not change the current
* regulatory settings, and no further processing is required.
- * @REG_REQ_USER_HINT_HANDLED: a non alpha2 user hint was handled and no
- * further processing is required, i.e., not need to update last_request
- * etc. This should be used for user hints that do not provide an alpha2
- * but some other type of regulatory hint, i.e., indoor operation.
*/
enum reg_request_treatment {
REG_REQ_OK,
REG_REQ_IGNORE,
REG_REQ_INTERSECT,
REG_REQ_ALREADY_SET,
- REG_REQ_USER_HINT_HANDLED,
};
static struct regulatory_request core_request_world = {
* State variable indicating if the platform on which the devices
* are attached is operating in an indoor environment. The state variable
* is relevant for all registered devices.
- * (protected by RTNL)
*/
static bool reg_is_indoor;
+static spinlock_t reg_indoor_lock;
+
+/* Used to track the userspace process controlling the indoor setting */
+static u32 reg_is_indoor_portid;
+
+/* Max number of consecutive attempts to communicate with CRDA */
+#define REG_MAX_CRDA_TIMEOUTS 10
+
+static u32 reg_crda_timeouts;
static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
{
mutex_unlock(®_regdb_search_mutex);
if (!IS_ERR_OR_NULL(regdom))
- set_regdom(regdom);
+ set_regdom(regdom, REGD_SOURCE_INTERNAL_DB);
rtnl_unlock();
}
snprintf(country, sizeof(country), "COUNTRY=%c%c",
alpha2[0], alpha2[1]);
+ /* query internal regulatory database (if it exists) */
+ reg_regdb_query(alpha2);
+
+ if (reg_crda_timeouts > REG_MAX_CRDA_TIMEOUTS) {
+ pr_info("Exceeded CRDA call max attempts. Not calling CRDA\n");
+ return -EINVAL;
+ }
+
if (!is_world_regdom((char *) alpha2))
pr_info("Calling CRDA for country: %c%c\n",
alpha2[0], alpha2[1]);
else
pr_info("Calling CRDA to update world regulatory domain\n");
- /* query internal regulatory database (if it exists) */
- reg_regdb_query(alpha2);
-
return kobject_uevent_env(®_pdev->dev.kobj, KOBJ_CHANGE, env);
}
{
if (call_crda(request->alpha2))
return REG_REQ_IGNORE;
+
+ queue_delayed_work(system_power_efficient_wq,
+ ®_timeout, msecs_to_jiffies(3142));
return REG_REQ_OK;
}
channel_flags |= IEEE80211_CHAN_NO_OFDM;
if (rd_flags & NL80211_RRF_NO_OUTDOOR)
channel_flags |= IEEE80211_CHAN_INDOOR_ONLY;
- if (rd_flags & NL80211_RRF_GO_CONCURRENT)
- channel_flags |= IEEE80211_CHAN_GO_CONCURRENT;
+ if (rd_flags & NL80211_RRF_IR_CONCURRENT)
+ channel_flags |= IEEE80211_CHAN_IR_CONCURRENT;
if (rd_flags & NL80211_RRF_NO_HT40MINUS)
channel_flags |= IEEE80211_CHAN_NO_HT40MINUS;
if (rd_flags & NL80211_RRF_NO_HT40PLUS)
return request->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE;
}
-static bool reg_request_indoor(struct regulatory_request *request)
-{
- if (request->initiator != NL80211_REGDOM_SET_BY_USER)
- return false;
- return request->user_reg_hint_type == NL80211_USER_REG_HINT_INDOOR;
-}
-
bool reg_last_request_cell_base(void)
{
return reg_request_cell_base(get_last_request());
need_more_processing = true;
spin_unlock(®_requests_lock);
- if (lr->initiator == NL80211_REGDOM_SET_BY_USER)
- cancel_delayed_work(®_timeout);
+ cancel_delayed_work(®_timeout);
if (need_more_processing)
schedule_work(®_work);
{
struct regulatory_request *lr = get_last_request();
- if (reg_request_indoor(user_request)) {
- reg_is_indoor = true;
- return REG_REQ_USER_HINT_HANDLED;
- }
-
if (reg_request_cell_base(user_request))
return reg_ignore_cell_hint(user_request);
treatment = __reg_process_hint_user(user_request);
if (treatment == REG_REQ_IGNORE ||
- treatment == REG_REQ_ALREADY_SET ||
- treatment == REG_REQ_USER_HINT_HANDLED) {
+ treatment == REG_REQ_ALREADY_SET) {
reg_free_request(user_request);
return treatment;
}
case REG_REQ_OK:
break;
case REG_REQ_IGNORE:
- case REG_REQ_USER_HINT_HANDLED:
reg_free_request(driver_request);
return treatment;
case REG_REQ_INTERSECT:
case REG_REQ_OK:
break;
case REG_REQ_IGNORE:
- case REG_REQ_USER_HINT_HANDLED:
/* fall through */
case REG_REQ_ALREADY_SET:
reg_free_request(country_ie_request);
case NL80211_REGDOM_SET_BY_USER:
treatment = reg_process_hint_user(reg_request);
if (treatment == REG_REQ_IGNORE ||
- treatment == REG_REQ_ALREADY_SET ||
- treatment == REG_REQ_USER_HINT_HANDLED)
+ treatment == REG_REQ_ALREADY_SET)
return;
- queue_delayed_work(system_power_efficient_wq,
- ®_timeout, msecs_to_jiffies(3142));
return;
case NL80211_REGDOM_SET_BY_DRIVER:
if (!wiphy)
}
reg_process_hint(reg_request);
+
+ lr = get_last_request();
+
+ spin_lock(®_requests_lock);
+ if (!list_empty(®_requests_list) && lr && lr->processed)
+ schedule_work(®_work);
+ spin_unlock(®_requests_lock);
}
/* Processes beacon hints -- this has nothing to do with country IEs */
request->initiator = NL80211_REGDOM_SET_BY_USER;
request->user_reg_hint_type = user_reg_hint_type;
+ /* Allow calling CRDA again */
+ reg_crda_timeouts = 0;
+
queue_regulatory_request(request);
return 0;
}
-int regulatory_hint_indoor_user(void)
+int regulatory_hint_indoor(bool is_indoor, u32 portid)
{
- struct regulatory_request *request;
+ spin_lock(®_indoor_lock);
- request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
- if (!request)
- return -ENOMEM;
+ /* It is possible that more than one user space process is trying to
+ * configure the indoor setting. To handle such cases, clear the indoor
+ * setting in case that some process does not think that the device
+ * is operating in an indoor environment. In addition, if a user space
+ * process indicates that it is controlling the indoor setting, save its
+ * portid, i.e., make it the owner.
+ */
+ reg_is_indoor = is_indoor;
+ if (reg_is_indoor) {
+ if (!reg_is_indoor_portid)
+ reg_is_indoor_portid = portid;
+ } else {
+ reg_is_indoor_portid = 0;
+ }
- request->wiphy_idx = WIPHY_IDX_INVALID;
- request->initiator = NL80211_REGDOM_SET_BY_USER;
- request->user_reg_hint_type = NL80211_USER_REG_HINT_INDOOR;
- queue_regulatory_request(request);
+ spin_unlock(®_indoor_lock);
+
+ if (!is_indoor)
+ reg_check_channels();
return 0;
}
+void regulatory_netlink_notify(u32 portid)
+{
+ spin_lock(®_indoor_lock);
+
+ if (reg_is_indoor_portid != portid) {
+ spin_unlock(®_indoor_lock);
+ return;
+ }
+
+ reg_is_indoor = false;
+ reg_is_indoor_portid = 0;
+
+ spin_unlock(®_indoor_lock);
+
+ reg_check_channels();
+}
+
/* Driver hints */
int regulatory_hint(struct wiphy *wiphy, const char *alpha2)
{
request->alpha2[1] = alpha2[1];
request->initiator = NL80211_REGDOM_SET_BY_DRIVER;
+ /* Allow calling CRDA again */
+ reg_crda_timeouts = 0;
+
queue_regulatory_request(request);
return 0;
request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE;
request->country_ie_env = env;
+ /* Allow calling CRDA again */
+ reg_crda_timeouts = 0;
+
queue_regulatory_request(request);
request = NULL;
out:
char alpha2[2];
char world_alpha2[2];
struct reg_beacon *reg_beacon, *btmp;
- struct regulatory_request *reg_request, *tmp;
LIST_HEAD(tmp_reg_req_list);
struct cfg80211_registered_device *rdev;
ASSERT_RTNL();
- reg_is_indoor = false;
+ /*
+ * Clear the indoor setting in case that it is not controlled by user
+ * space, as otherwise there is no guarantee that the device is still
+ * operating in an indoor environment.
+ */
+ spin_lock(®_indoor_lock);
+ if (reg_is_indoor && !reg_is_indoor_portid) {
+ reg_is_indoor = false;
+ reg_check_channels();
+ }
+ spin_unlock(®_indoor_lock);
reset_regdomains(true, &world_regdom);
restore_alpha2(alpha2, reset_user);
* settings.
*/
spin_lock(®_requests_lock);
- list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) {
- if (reg_request->initiator != NL80211_REGDOM_SET_BY_USER)
- continue;
- list_move_tail(®_request->list, &tmp_reg_req_list);
- }
+ list_splice_tail_init(®_requests_list, &tmp_reg_req_list);
spin_unlock(®_requests_lock);
/* Clear beacon hints */
* multiple drivers can be ironed out later. Caller must've already
* kmalloc'd the rd structure.
*/
-int set_regdom(const struct ieee80211_regdomain *rd)
+int set_regdom(const struct ieee80211_regdomain *rd,
+ enum ieee80211_regd_source regd_src)
{
struct regulatory_request *lr;
bool user_reset = false;
return -EINVAL;
}
+ if (regd_src == REGD_SOURCE_CRDA)
+ reg_crda_timeouts = 0;
+
lr = get_last_request();
/* Note that this doesn't update the wiphys, this is done below */
{
REG_DBG_PRINT("Timeout while waiting for CRDA to reply, restoring regulatory settings\n");
rtnl_lock();
+ reg_crda_timeouts++;
restore_regulatory_settings(true);
rtnl_unlock();
}
spin_lock_init(®_requests_lock);
spin_lock_init(®_pending_beacons_lock);
+ spin_lock_init(®_indoor_lock);
reg_regdb_size_check();
projects / cascardo / linux.git / blobdiff