diff options
| -rw-r--r-- | net/wireless/reg.c | 133 |
1 files changed, 69 insertions, 64 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c index cf4386fade8a..129586994662 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -65,6 +65,13 @@ #define REG_DBG_PRINT(args...) #endif +enum reg_request_treatment { + REG_REQ_OK, + REG_REQ_IGNORE, + REG_REQ_INTERSECT, + REG_REQ_ALREADY_SET, +}; + static struct regulatory_request core_request_world = { .initiator = NL80211_REGDOM_SET_BY_CORE, .alpha2[0] = '0', @@ -925,16 +932,17 @@ bool reg_last_request_cell_base(void) #ifdef CONFIG_CFG80211_CERTIFICATION_ONUS /* Core specific check */ -static int reg_ignore_cell_hint(struct regulatory_request *pending_request) +static enum reg_request_treatment +reg_ignore_cell_hint(struct regulatory_request *pending_request) { if (!reg_num_devs_support_basehint) - return -EOPNOTSUPP; + return REG_REQ_IGNORE; if (reg_request_cell_base(last_request) && !regdom_changes(pending_request->alpha2)) - return -EALREADY; + return REG_REQ_ALREADY_SET; - return 0; + return REG_REQ_OK; } /* Device specific check */ @@ -945,7 +953,7 @@ static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) #else static int reg_ignore_cell_hint(struct regulatory_request *pending_request) { - return -EOPNOTSUPP; + return REG_REQ_IGNORE; } static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) @@ -1308,15 +1316,10 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy, } EXPORT_SYMBOL(wiphy_apply_custom_regulatory); -/* - * Return value which can be used by ignore_request() to indicate - * it has been determined we should intersect two regulatory domains - */ -#define REG_INTERSECT 1 - /* This has the logic which determines when a new request * should be ignored. */ -static int ignore_request(struct wiphy *wiphy, +static enum reg_request_treatment +get_reg_request_treatment(struct wiphy *wiphy, struct regulatory_request *pending_request) { struct wiphy *last_wiphy = NULL; @@ -1325,17 +1328,17 @@ static int ignore_request(struct wiphy *wiphy, /* All initial requests are respected */ if (!last_request) - return 0; + return REG_REQ_OK; switch (pending_request->initiator) { case NL80211_REGDOM_SET_BY_CORE: - return 0; + return REG_REQ_OK; case NL80211_REGDOM_SET_BY_COUNTRY_IE: if (reg_request_cell_base(last_request)) { /* Trust a Cell base station over the AP's country IE */ if (regdom_changes(pending_request->alpha2)) - return -EOPNOTSUPP; - return -EALREADY; + return REG_REQ_IGNORE; + return REG_REQ_ALREADY_SET; } last_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx); @@ -1352,23 +1355,23 @@ static int ignore_request(struct wiphy *wiphy, * to be correct. Reject second one for now. */ if (regdom_changes(pending_request->alpha2)) - return -EOPNOTSUPP; - return -EALREADY; + return REG_REQ_IGNORE; + return REG_REQ_ALREADY_SET; } /* * Two consecutive Country IE hints on the same wiphy. * This should be picked up early by the driver/stack */ if (WARN_ON(regdom_changes(pending_request->alpha2))) - return 0; - return -EALREADY; + return REG_REQ_OK; + return REG_REQ_ALREADY_SET; } return 0; case NL80211_REGDOM_SET_BY_DRIVER: if (last_request->initiator == NL80211_REGDOM_SET_BY_CORE) { if (regdom_changes(pending_request->alpha2)) - return 0; - return -EALREADY; + return REG_REQ_OK; + return REG_REQ_ALREADY_SET; } /* @@ -1378,25 +1381,25 @@ static int ignore_request(struct wiphy *wiphy, */ if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER && !regdom_changes(pending_request->alpha2)) - return -EALREADY; + return REG_REQ_ALREADY_SET; - return REG_INTERSECT; + return REG_REQ_INTERSECT; case NL80211_REGDOM_SET_BY_USER: if (reg_request_cell_base(pending_request)) return reg_ignore_cell_hint(pending_request); if (reg_request_cell_base(last_request)) - return -EOPNOTSUPP; + return REG_REQ_IGNORE; if (last_request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) - return REG_INTERSECT; + return REG_REQ_INTERSECT; /* * If the user knows better the user should set the regdom * to their country before the IE is picked up */ if (last_request->initiator == NL80211_REGDOM_SET_BY_USER && last_request->intersect) - return -EOPNOTSUPP; + return REG_REQ_IGNORE; /* * Process user requests only after previous user/driver/core * requests have been processed @@ -1405,15 +1408,15 @@ static int ignore_request(struct wiphy *wiphy, last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER || last_request->initiator == NL80211_REGDOM_SET_BY_USER) && regdom_changes(last_request->alpha2)) - return -EAGAIN; + return REG_REQ_IGNORE; if (!regdom_changes(pending_request->alpha2)) - return -EALREADY; + return REG_REQ_ALREADY_SET; - return 0; + return REG_REQ_OK; } - return -EINVAL; + return REG_REQ_IGNORE; } static void reg_set_request_processed(void) @@ -1443,23 +1446,24 @@ static void reg_set_request_processed(void) * The Wireless subsystem can use this function to hint to the wireless core * what it believes should be the current regulatory domain. * - * Returns zero if all went fine, %-EALREADY if a regulatory domain had - * already been set or other standard error codes. + * Returns one of the different reg request treatment values. * * Caller must hold &cfg80211_mutex and ®_mutex */ -static int __regulatory_hint(struct wiphy *wiphy, - struct regulatory_request *pending_request) +static enum reg_request_treatment +__regulatory_hint(struct wiphy *wiphy, + struct regulatory_request *pending_request) { const struct ieee80211_regdomain *regd; bool intersect = false; - int r = 0; + enum reg_request_treatment treatment; assert_cfg80211_lock(); - r = ignore_request(wiphy, pending_request); + treatment = get_reg_request_treatment(wiphy, pending_request); - if (r == REG_INTERSECT) { + switch (treatment) { + case REG_REQ_INTERSECT: if (pending_request->initiator == NL80211_REGDOM_SET_BY_DRIVER) { regd = reg_copy_regd(cfg80211_regdomain); @@ -1470,26 +1474,28 @@ static int __regulatory_hint(struct wiphy *wiphy, wiphy->regd = regd; } intersect = true; - } else if (r) { + break; + case REG_REQ_OK: + break; + default: /* * If the regulatory domain being requested by the * driver has already been set just copy it to the * wiphy */ - if (r == -EALREADY && - pending_request->initiator == - NL80211_REGDOM_SET_BY_DRIVER) { + if (treatment == REG_REQ_ALREADY_SET && + pending_request->initiator == NL80211_REGDOM_SET_BY_DRIVER) { regd = reg_copy_regd(cfg80211_regdomain); if (IS_ERR(regd)) { kfree(pending_request); - return PTR_ERR(regd); + return REG_REQ_IGNORE; } - r = -EALREADY; + treatment = REG_REQ_ALREADY_SET; wiphy->regd = regd; goto new_request; } kfree(pending_request); - return r; + return treatment; } new_request: @@ -1506,28 +1512,29 @@ new_request: user_alpha2[1] = last_request->alpha2[1]; } - /* When r == REG_INTERSECT we do need to call CRDA */ - if (r < 0) { + /* When r == REG_REQ_INTERSECT we do need to call CRDA */ + if (treatment != REG_REQ_OK && treatment != REG_REQ_INTERSECT) { /* * Since CRDA will not be called in this case as we already * have applied the requested regulatory domain before we just * inform userspace we have processed the request */ - if (r == -EALREADY) { + if (treatment == REG_REQ_ALREADY_SET) { nl80211_send_reg_change_event(last_request); reg_set_request_processed(); } - return r; + return treatment; } - return call_crda(last_request->alpha2); + if (call_crda(last_request->alpha2)) + return REG_REQ_IGNORE; + return REG_REQ_OK; } /* This processes *all* regulatory hints */ static void reg_process_hint(struct regulatory_request *reg_request, enum nl80211_reg_initiator reg_initiator) { - int r = 0; struct wiphy *wiphy = NULL; BUG_ON(!reg_request->alpha2); @@ -1540,20 +1547,18 @@ static void reg_process_hint(struct regulatory_request *reg_request, return; } - r = __regulatory_hint(wiphy, reg_request); - /* This is required so that the orig_* parameters are saved */ - if (r == -EALREADY && wiphy && - wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) { - wiphy_update_regulatory(wiphy, reg_initiator); - return; + switch (__regulatory_hint(wiphy, reg_request)) { + case REG_REQ_ALREADY_SET: + /* This is required so that the orig_* parameters are saved */ + if (wiphy && wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) + wiphy_update_regulatory(wiphy, reg_initiator); + break; + default: + if (reg_initiator == NL80211_REGDOM_SET_BY_USER) + schedule_delayed_work(®_timeout, + msecs_to_jiffies(3142)); + break; } - - /* - * We only time out user hints, given that they should be the only - * source of bogus requests. - */ - if (r != -EALREADY && reg_initiator == NL80211_REGDOM_SET_BY_USER) - schedule_delayed_work(®_timeout, msecs_to_jiffies(3142)); } /* |