mac80211: add support for the ADDBA extension element

HE allows peers to negotiate the aggregation fragmentation level to be used
during transmission. The level can be 1-3. The Ext element is added behind
the ADDBA request inside the action frame. The responder will then reply
with the same level or a lower one if the requested one is not supported.
This patch only handles the negotiation part as the ADDBA frames get passed
to the ATH11k firmware, which does the rest of the magic for us aswell as
generating the requests.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20190729104512.27615-1-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index b5b7feaa24c03d5d2e75d3d533ef714c90ad06ae..803ae87906f44e0f0db338542f5b3e9cf08889ae 100644 (file)
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -983,6 +983,8 @@ struct ieee80211_mgmt {
                                        __le16 capab;
                                        __le16 timeout;
                                        __le16 start_seq_num;
+                                       /* followed by BA Extension */
+                                       u8 variable[0];
                                } __packed addba_req;
                                struct{
                                        u8 action_code;