Return-path: Received: from mail-wm0-f48.google.com ([74.125.82.48]:36241 "EHLO mail-wm0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751859AbcAEOhg (ORCPT ); Tue, 5 Jan 2016 09:37:36 -0500 Received: by mail-wm0-f48.google.com with SMTP id l65so25151956wmf.1 for ; Tue, 05 Jan 2016 06:37:36 -0800 (PST) From: Helmut Schaa To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Helmut Schaa Subject: [PATCH] mac80211: Don't buffer non-bufferable MMPDUs Date: Tue, 5 Jan 2016 15:37:12 +0100 Message-Id: <1452004632-20263-1-git-send-email-helmut.schaa@googlemail.com> (sfid-20160105_153752_428924_A43877DA) Sender: linux-wireless-owner@vger.kernel.org List-ID: Non-bufferable MMPDUs are sent out to STAs even while in PS mode (for example probe responses). Applying filtered frame handling for these doesn't seem to make much sense and will only create more air utilization when the STA wakes up. Hence, apply filtered frame handling only for bufferable MMPDUs. Signed-off-by: Helmut Schaa --- net/mac80211/status.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 5bad05e..14bd53b 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -51,6 +51,12 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, struct ieee80211_hdr *hdr = (void *)skb->data; int ac; + if (ieee80211_is_mgmt(hdr->frame_control) && + !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) { + ieee80211_free_txskb(&local->hw, skb); + return; + } + /* * This skb 'survived' a round-trip through the driver, and * hopefully the driver didn't mangle it too badly. However, -- 1.8.4.5