cfg80211: make regulatory_request use wiphy_idx instead of wiphy
We do this so later on we can move the pending requests onto a
workqueue. By using the wiphy_idx instead of the wiphy we can
later easily check if the wiphy has disappeared or not.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index e49ac9b..d44f3b5 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -831,9 +831,12 @@
const struct ieee80211_power_rule *power_rule = NULL;
struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
+ struct wiphy *request_wiphy;
assert_cfg80211_lock();
+ request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
sband = wiphy->bands[band];
BUG_ON(chan_idx >= sband->n_channels);
chan = &sband->channels[chan_idx];
@@ -881,8 +884,8 @@
power_rule = ®_rule->power_rule;
if (last_request->initiator == REGDOM_SET_BY_DRIVER &&
- last_request->wiphy && last_request->wiphy == wiphy &&
- last_request->wiphy->strict_regulatory) {
+ request_wiphy && request_wiphy == wiphy &&
+ request_wiphy->strict_regulatory) {
/* This gaurantees the driver's requested regulatory domain
* will always be used as a base for further regulatory
* settings */
@@ -1046,6 +1049,7 @@
static int ignore_request(struct wiphy *wiphy, enum reg_set_by set_by,
const char *alpha2)
{
+ struct wiphy *last_wiphy = NULL;
assert_cfg80211_lock();
@@ -1059,10 +1063,13 @@
case REGDOM_SET_BY_CORE:
return -EINVAL;
case REGDOM_SET_BY_COUNTRY_IE:
+
+ last_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
if (unlikely(!is_an_alpha2(alpha2)))
return -EINVAL;
if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
- if (last_request->wiphy != wiphy) {
+ if (last_wiphy != wiphy) {
/*
* Two cards with two APs claiming different
* different Country IE alpha2s. We could
@@ -1163,7 +1170,7 @@
request->alpha2[0] = alpha2[0];
request->alpha2[1] = alpha2[1];
request->initiator = set_by;
- request->wiphy = wiphy;
+ request->wiphy_idx = get_wiphy_idx(wiphy);
request->intersect = intersect;
request->country_ie_checksum = country_ie_checksum;
request->country_ie_env = env;
@@ -1226,11 +1233,16 @@
static bool reg_same_country_ie_hint(struct wiphy *wiphy,
u32 country_ie_checksum)
{
+ struct wiphy *request_wiphy;
+
assert_cfg80211_lock();
- if (!last_request->wiphy)
+ request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
+ if (!request_wiphy)
return false;
- if (likely(last_request->wiphy != wiphy))
+
+ if (likely(request_wiphy != wiphy))
return !country_ie_integrity_changes(country_ie_checksum);
/* We should not have let these through at this point, they
* should have been picked up earlier by the first alpha2 check
@@ -1278,14 +1290,15 @@
/* We will run this for *every* beacon processed for the BSSID, so
* we optimize an early check to exit out early if we don't have to
* do anything */
- if (likely(last_request->wiphy)) {
+ if (likely(wiphy_idx_valid(last_request->wiphy_idx))) {
struct cfg80211_registered_device *drv_last_ie;
- drv_last_ie = wiphy_to_dev(last_request->wiphy);
+ drv_last_ie =
+ cfg80211_drv_by_wiphy_idx(last_request->wiphy_idx);
/* Lets keep this simple -- we trust the first AP
* after we intersect with CRDA */
- if (likely(last_request->wiphy == wiphy)) {
+ if (likely(&drv_last_ie->wiphy == wiphy)) {
/* Ignore IEs coming in on this wiphy with
* the same alpha2 and environment cap */
if (likely(alpha2_equal(drv_last_ie->country_ie_alpha2,
@@ -1377,13 +1390,12 @@
{
if (is_intersected_alpha2(rd->alpha2)) {
- struct wiphy *wiphy = NULL;
- struct cfg80211_registered_device *drv;
if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
- if (last_request->wiphy) {
- wiphy = last_request->wiphy;
- drv = wiphy_to_dev(wiphy);
+ struct cfg80211_registered_device *drv;
+ drv = cfg80211_drv_by_wiphy_idx(
+ last_request->wiphy_idx);
+ if (drv) {
printk(KERN_INFO "cfg80211: Current regulatory "
"domain updated by AP to: %c%c\n",
drv->country_ie_alpha2[0],
@@ -1449,7 +1461,7 @@
{
const struct ieee80211_regdomain *intersected_rd = NULL;
struct cfg80211_registered_device *drv = NULL;
- struct wiphy *wiphy = NULL;
+ struct wiphy *request_wiphy;
/* Some basic sanity checks first */
if (is_world_regdom(rd->alpha2)) {
@@ -1477,8 +1489,6 @@
return -EINVAL;
}
- wiphy = last_request->wiphy;
-
/* Now lets set the regulatory domain, update all driver channels
* and finally inform them of what we have done, in case they want
* to review or adjust their own settings based on their own
@@ -1494,6 +1504,8 @@
return -EINVAL;
}
+ request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
if (!last_request->intersect) {
int r;
@@ -1506,9 +1518,9 @@
/* For a driver hint, lets copy the regulatory domain the
* driver wanted to the wiphy to deal with conflicts */
- BUG_ON(last_request->wiphy->regd);
+ BUG_ON(request_wiphy->regd);
- r = reg_copy_regd(&last_request->wiphy->regd, rd);
+ r = reg_copy_regd(&request_wiphy->regd, rd);
if (r)
return r;
@@ -1529,7 +1541,7 @@
* However if a driver requested this specific regulatory
* domain we keep it for its private use */
if (last_request->initiator == REGDOM_SET_BY_DRIVER)
- last_request->wiphy->regd = rd;
+ request_wiphy->regd = rd;
else
kfree(rd);
@@ -1569,7 +1581,7 @@
if (!intersected_rd)
return -EINVAL;
- drv = wiphy_to_dev(wiphy);
+ drv = wiphy_to_dev(request_wiphy);
drv->country_ie_alpha2[0] = rd->alpha2[0];
drv->country_ie_alpha2[1] = rd->alpha2[1];
@@ -1618,14 +1630,18 @@
/* Caller must hold cfg80211_mutex */
void reg_device_remove(struct wiphy *wiphy)
{
+ struct wiphy *request_wiphy;
+
assert_cfg80211_lock();
+ request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
kfree(wiphy->regd);
- if (!last_request || !last_request->wiphy)
+ if (!last_request || !request_wiphy)
return;
- if (last_request->wiphy != wiphy)
+ if (request_wiphy != wiphy)
return;
- last_request->wiphy = NULL;
+ last_request->wiphy_idx = WIPHY_IDX_STALE;
last_request->country_ie_env = ENVIRON_ANY;
}