cfg80211: add WMM traffic stream API

Add nl80211 and driver API to validate, add and delete traffic
streams with appropriate settings.

The API calls for userspace doing the action frame handshake
with the peer, and then allows only to set up the parameters
in the driver. To avoid setting up a session only to tear it
down again, the validate API is provided, but the real usage
later can still fail so userspace must be prepared for that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 29c4399e08b9..e5b8caf5e466 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -722,6 +722,22 @@
  *      QoS mapping is relevant for IP packets, it is only valid during an
  *      association. This is cleared on disassociation and AP restart.
  *
+ * @NL80211_CMD_ADD_TX_TS: Ask the kernel to add a traffic stream for the given
+ *      %NL80211_ATTR_TSID and %NL80211_ATTR_MAC with %NL80211_ATTR_USER_PRIO
+ *      and %NL80211_ATTR_ADMITTED_TIME parameters.
+ *      Note that the action frame handshake with the AP shall be handled by
+ *      userspace via the normal management RX/TX framework, this only sets
+ *      up the TX TS in the driver/device.
+ *      If the admitted time attribute is not added then the request just checks
+ *      if a subsequent setup could be successful, the intent is to use this to
+ *      avoid setting up a session with the AP when local restrictions would
+ *      make that impossible. However, the subsequent "real" setup may still
+ *      fail even if the check was successful.
+ * @NL80211_CMD_DEL_TX_TS: Remove an existing TS with the %NL80211_ATTR_TSID
+ *      and %NL80211_ATTR_MAC parameters. It isn't necessary to call this
+ *      before removing a station entry entirely, or before disassociating
+ *      or similar, cleanup will happen in the driver/device in this case.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -893,6 +909,9 @@ enum nl80211_commands {
 
         NL80211_CMD_SET_QOS_MAP,
 
+        NL80211_CMD_ADD_TX_TS,
+        NL80211_CMD_DEL_TX_TS,
+
         /* add new commands above here */
 
         /* used to define NL80211_CMD_MAX below */
@@ -1611,6 +1630,11 @@ enum nl80211_commands {
  *      drivers to indicate dynack capability. Dynack is automatically disabled
  *      setting valid value for coverage class.
  *
+ * @NL80211_ATTR_TSID: a TSID value (u8 attribute)
+ * @NL80211_ATTR_USER_PRIO: user priority value (u8 attribute)
+ * @NL80211_ATTR_ADMITTED_TIME: admitted time in units of 32 microseconds
+ *      (per second) (u16 attribute)
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1957,6 +1981,10 @@ enum nl80211_attrs {
 
         NL80211_ATTR_WIPHY_DYN_ACK,
 
+        NL80211_ATTR_TSID,
+        NL80211_ATTR_USER_PRIO,
+        NL80211_ATTR_ADMITTED_TIME,
+
         /* add attributes here, update the policy in nl80211.c */
 
         __NL80211_ATTR_AFTER_LAST,