cfg80211: mlme API must be able to sleep

After the mac80211 mlme cleanup, we can require that
the MLME functions in cfg80211 can sleep. This will
simplify future work in cfg80211 a lot.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 33 insertions, 18 deletions

diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 087d3377958f..f7dc7524e145 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -12,7 +12,7 @@
 #include "core.h"
 #include "nl80211.h"
 
-void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp)
+void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
@@ -23,6 +23,8 @@ void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len, gf
         u16 status = le16_to_cpu(mgmt->u.auth.status_code);
         bool done = false;
 
+        might_sleep();
+
         for (i = 0; i < MAX_AUTH_BSSES; i++) {
                 if (wdev->authtry_bsses[i] &&
                     memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid,
@@ -41,12 +43,12 @@ void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len, gf
 
         WARN_ON(!done);
 
-        nl80211_send_rx_auth(rdev, dev, buf, len, gfp);
+        nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
         cfg80211_sme_rx_auth(dev, buf, len);
 }
 EXPORT_SYMBOL(cfg80211_send_rx_auth);
 
-void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp)
+void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
 {
         u16 status_code;
         struct wireless_dev *wdev = dev->ieee80211_ptr;
@@ -57,12 +59,14 @@ void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len, g
         int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
         bool done;
 
+        might_sleep();
+
         status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
 
-        nl80211_send_rx_assoc(rdev, dev, buf, len, gfp);
+        nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
 
         cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
-                                status_code, gfp);
+                                status_code, GFP_KERNEL);
 
         if (status_code == WLAN_STATUS_SUCCESS) {
                 for (i = 0; wdev->current_bss && i < MAX_AUTH_BSSES; i++) {
@@ -80,7 +84,7 @@ void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len, g
 }
 EXPORT_SYMBOL(cfg80211_send_rx_assoc);
 
-void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp)
+void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
@@ -90,7 +94,9 @@ void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len, gfp
         int i;
         bool done = false;
 
-        nl80211_send_deauth(rdev, dev, buf, len, gfp);
+        might_sleep();
+
+        nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
 
         if (wdev->current_bss &&
             memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
@@ -132,16 +138,17 @@ void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len, gfp
                 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
 
                 from_ap = memcmp(mgmt->da, dev->dev_addr, ETH_ALEN) == 0;
-                __cfg80211_disconnected(dev, gfp, NULL, 0,
+                __cfg80211_disconnected(dev, GFP_KERNEL, NULL, 0,
                                         reason_code, from_ap);
         } else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
                 cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
-                                        WLAN_STATUS_UNSPECIFIED_FAILURE, gfp);
+                                        WLAN_STATUS_UNSPECIFIED_FAILURE,
+                                        GFP_KERNEL);
         }
 }
 EXPORT_SYMBOL(cfg80211_send_deauth);
 
-void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp)
+void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
@@ -153,7 +160,9 @@ void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len, g
         bool from_ap;
         bool done = false;
 
-        nl80211_send_disassoc(rdev, dev, buf, len, gfp);
+        might_sleep();
+
+        nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
 
         if (!wdev->sme_state == CFG80211_SME_CONNECTED)
                 return;
@@ -177,12 +186,12 @@ void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len, g
         reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
 
         from_ap = memcmp(mgmt->da, dev->dev_addr, ETH_ALEN) == 0;
-        __cfg80211_disconnected(dev, gfp, NULL, 0,
+        __cfg80211_disconnected(dev, GFP_KERNEL, NULL, 0,
                                 reason_code, from_ap);
 }
 EXPORT_SYMBOL(cfg80211_send_disassoc);
 
-void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr, gfp_t gfp)
+void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
@@ -190,10 +199,13 @@ void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr, gfp_t gf
         int i;
         bool done = false;
 
-        nl80211_send_auth_timeout(rdev, dev, addr, gfp);
+        might_sleep();
+
+        nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
         if (wdev->sme_state == CFG80211_SME_CONNECTING)
                 cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
-                                        WLAN_STATUS_UNSPECIFIED_FAILURE, gfp);
+                                        WLAN_STATUS_UNSPECIFIED_FAILURE,
+                                        GFP_KERNEL);
 
         for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
                 if (wdev->authtry_bsses[i] &&
@@ -211,7 +223,7 @@ void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr, gfp_t gf
 }
 EXPORT_SYMBOL(cfg80211_send_auth_timeout);
 
-void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr, gfp_t gfp)
+void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
@@ -219,10 +231,13 @@ void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr, gfp_t g
         int i;
         bool done = false;
 
-        nl80211_send_assoc_timeout(rdev, dev, addr, gfp);
+        might_sleep();
+
+        nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
         if (wdev->sme_state == CFG80211_SME_CONNECTING)
                 cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
-                                        WLAN_STATUS_UNSPECIFIED_FAILURE, gfp);
+                                        WLAN_STATUS_UNSPECIFIED_FAILURE,
+                                        GFP_KERNEL);
 
         for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
                 if (wdev->auth_bsses[i] &&