nl80211: PMKSA caching support
This is an interface to set, delete and flush PMKIDs through nl80211.
Main users would be fullmac devices which firmwares are capable of
generating the RSN IEs for the re-association requests, e.g. iwmc3200wifi.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index afa8e0a..d9724a2 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1266,6 +1266,8 @@
#define WLAN_MAX_KEY_LEN 32
+#define WLAN_PMKID_LEN 16
+
/**
* ieee80211_get_qos_ctl - get pointer to qos control bytes
* @hdr: the frame
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 45db17f..da8ea2e 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -349,6 +349,10 @@
NL80211_CMD_GET_SURVEY,
NL80211_CMD_NEW_SURVEY_RESULTS,
+ NL80211_CMD_SET_PMKSA,
+ NL80211_CMD_DEL_PMKSA,
+ NL80211_CMD_FLUSH_PMKSA,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -598,6 +602,10 @@
* the survey response for %NL80211_CMD_GET_SURVEY, nested attribute
* containing info as possible, see &enum survey_info.
*
+ * @NL80211_ATTR_PMKID: PMK material for PMKSA caching.
+ * @NL80211_ATTR_MAX_NUM_PMKIDS: maximum number of PMKIDs a firmware can
+ * cache, a wiphy attribute.
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -732,6 +740,9 @@
NL80211_ATTR_SURVEY_INFO,
+ NL80211_ATTR_PMKID,
+ NL80211_ATTR_MAX_NUM_PMKIDS,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index a6492e9..0884b9a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -871,6 +871,19 @@
u32 fixed; /* fixed bitrate, 0 == not fixed */
u32 maxrate; /* in kbps, 0 == no limit */
};
+/**
+ * struct cfg80211_pmksa - PMK Security Association
+ *
+ * This structure is passed to the set/del_pmksa() method for PMKSA
+ * caching.
+ *
+ * @bssid: The AP's BSSID.
+ * @pmkid: The PMK material itself.
+ */
+struct cfg80211_pmksa {
+ u8 *bssid;
+ u8 *pmkid;
+};
/**
* struct cfg80211_ops - backend description for wireless configuration
@@ -976,6 +989,13 @@
* @dump_survey: get site survey information.
*
* @testmode_cmd: run a test mode command
+ *
+ * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac
+ * devices running firmwares capable of generating the (re) association
+ * RSN IE. It allows for faster roaming between WPA2 BSSIDs.
+ * @del_pmksa: Delete a cached PMKID.
+ * @flush_pmksa: Flush all cached PMKIDs.
+ *
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy);
@@ -1097,6 +1117,12 @@
int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev,
int idx, struct survey_info *info);
+ int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev,
+ struct cfg80211_pmksa *pmksa);
+ int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev,
+ struct cfg80211_pmksa *pmksa);
+ int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev);
+
/* some temporary stuff to finish wext */
int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
bool enabled, int timeout);
@@ -1195,6 +1221,8 @@
char fw_version[ETHTOOL_BUSINFO_LEN];
u32 hw_version;
+ u8 max_num_pmkids;
+
/* If multiple wiphys are registered and you're handed e.g.
* a regular netdev with assigned ieee80211_ptr, you won't
* know whether it points to a wiphy your driver has registered