cfg80211/nl80211: support GTK rekey offload

[firefly-linux-kernel-4.4.55.git] / include / linux / nl80211.h

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index c7ccaae15af60074d4e2da9d8f645b91608e3265..3ec2f949bf7ac72f527e00e4e8e5cafd4c669da3 100644 (file)
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -483,6 +483,14 @@
  *     more background information, see
  *     http://wireless.kernel.org/en/users/Documentation/WoWLAN.
  *
+ * @NL80211_CMD_SET_REKEY_OFFLOAD: This command is used give the driver
+ *     the necessary information for supporting GTK rekey offload. This
+ *     feature is typically used during WoWLAN. The configuration data
+ *     is contained in %NL80211_ATTR_REKEY_DATA (which is nested and
+ *     contains the data in sub-attributes). After rekeying happened,
+ *     this command may also be sent by the driver as an MLME event to
+ *     inform userspace of the new replay counter.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -605,6 +613,8 @@ enum nl80211_commands {
        NL80211_CMD_SCHED_SCAN_RESULTS,
        NL80211_CMD_SCHED_SCAN_STOPPED,
 
+       NL80211_CMD_SET_REKEY_OFFLOAD,
+
        /* add new commands above here */
 
        /* used to define NL80211_CMD_MAX below */
@@ -996,6 +1006,9 @@ enum nl80211_commands {
  *     are managed in software: interfaces of these types aren't subject to
  *     any restrictions in their number or combinations.
  *
+ * @%NL80211_ATTR_REKEY_DATA: nested attribute containing the information
+ *     necessary for GTK rekeying in the device, see &enum nl80211_rekey_data.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1194,6 +1207,8 @@ enum nl80211_attrs {
        NL80211_ATTR_INTERFACE_COMBINATIONS,
        NL80211_ATTR_SOFTWARE_IFTYPES,
 
+       NL80211_ATTR_REKEY_DATA,
+
        /* add attributes here, update the policy in nl80211.c */
 
        __NL80211_ATTR_AFTER_LAST,
@@ -2361,4 +2376,28 @@ enum nl80211_plink_state {
        MAX_NL80211_PLINK_STATES = NUM_NL80211_PLINK_STATES - 1
 };
 
+#define NL80211_KCK_LEN                        16
+#define NL80211_KEK_LEN                        16
+#define NL80211_REPLAY_CTR_LEN         8
+
+/**
+ * enum nl80211_rekey_data - attributes for GTK rekey offload
+ * @__NL80211_REKEY_DATA_INVALID: invalid number for nested attributes
+ * @NL80211_REKEY_DATA_KEK: key encryption key (binary)
+ * @NL80211_REKEY_DATA_KCK: key confirmation key (binary)
+ * @NL80211_REKEY_DATA_REPLAY_CTR: replay counter (binary)
+ * @NUM_NL80211_REKEY_DATA: number of rekey attributes (internal)
+ * @MAX_NL80211_REKEY_DATA: highest rekey attribute (internal)
+ */
+enum nl80211_rekey_data {
+       __NL80211_REKEY_DATA_INVALID,
+       NL80211_REKEY_DATA_KEK,
+       NL80211_REKEY_DATA_KCK,
+       NL80211_REKEY_DATA_REPLAY_CTR,
+
+       /* keep last */
+       NUM_NL80211_REKEY_DATA,
+       MAX_NL80211_REKEY_DATA = NUM_NL80211_REKEY_DATA - 1
+};
+
 #endif /* __LINUX_NL80211_H */