From: Ivo van Doorn <ivdoorn@gmail.com>
To: "John W. Linville" <linville@tuxdriver.com>
Cc: linux-wireless@vger.kernel.org, users@rt2x00.serialmonkey.com
Subject: [PATCH 12/13] rt2x00: Fix tx aggregation problems with some clients
Date: Mon, 28 Mar 2011 13:35:21 +0200 [thread overview]
Message-ID: <201103281335.23166.IvDoorn@gmail.com> (raw)
In-Reply-To: <201103281334.52023.IvDoorn@gmail.com>
From: Helmut Schaa <helmut.schaa@googlemail.com>
Some clients seem to rely upon the reception of BlockAckReqs to flush
their rx reorder buffer. In order to fix aggregation for these clients
rt2x00 should send a BlockAckReq if the transmission of an AMPDU
subframe fails.
Introduce a new flag TXDONE_AMPDU to indicate that this is an AMPDU
subframe and pass IEEE80211_TX_STAT_AMPDU_NO_BACK to mac80211 if an
AMPDU subframe failed during transmission.
This fixes aggregation problems with Intel 5100 Windows STAs (and maybe
others as well).
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
---
drivers/net/wireless/rt2x00/rt2800lib.c | 3 +++
drivers/net/wireless/rt2x00/rt2x00dev.c | 6 +++++-
drivers/net/wireless/rt2x00/rt2x00queue.h | 1 +
3 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 59302fa..769c05c 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -687,6 +687,9 @@ void rt2800_txdone_entry(struct queue_entry *entry, u32 status)
mcs = real_mcs;
}
+ if (aggr == 1 || ampdu == 1)
+ __set_bit(TXDONE_AMPDU, &txdesc.flags);
+
/*
* Ralink has a retry mechanism using a global fallback
* table. We setup this fallback table to try the immediate
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index a98c434..83252d94 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -353,10 +353,14 @@ void rt2x00lib_txdone(struct queue_entry *entry,
* which would allow the rc algorithm to better decide on
* which rates are suitable.
*/
- if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
+ if (test_bit(TXDONE_AMPDU, &txdesc->flags) ||
+ tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
tx_info->flags |= IEEE80211_TX_STAT_AMPDU;
tx_info->status.ampdu_len = 1;
tx_info->status.ampdu_ack_len = success ? 1 : 0;
+
+ if (!success)
+ tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
}
if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.h b/drivers/net/wireless/rt2x00/rt2x00queue.h
index 0c8b0c6..6ae8200 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.h
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.h
@@ -217,6 +217,7 @@ enum txdone_entry_desc_flags {
TXDONE_FALLBACK,
TXDONE_FAILURE,
TXDONE_EXCESSIVE_RETRY,
+ TXDONE_AMPDU,
};
/**
--
1.7.2.3
next prev parent reply other threads:[~2011-03-28 11:37 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-28 11:29 [PATCH 01/13] rt2x00: Limit rt2x00pci rxdone processing to 16 entries at once Ivo van Doorn
2011-03-28 11:30 ` [PATCH 02/13] rt2x00: Limit rt2800pci txdone " Ivo van Doorn
2011-03-28 11:30 ` [PATCH 03/13] rt2x00: Calculate tx status fifo size instead of hardcoding it Ivo van Doorn
2011-03-28 11:30 ` [PATCH 04/13] rt2x00: Remove DRIVER_SUPPORT_WATCHDOG flag Ivo van Doorn
2011-03-28 11:31 ` [PATCH 05/13] rt2x00: Restructure bw_comp calculationATCHDOG flag Ivo van Doorn
2011-03-28 11:32 ` [PATCH 06/13] rt2x00: Don't recalculate HT40 compensation for each rate Ivo van Doorn
2011-03-28 11:32 ` [PATCH 07/13] rt2x00: Indention cleanup in rt2800lib Ivo van Doorn
2011-03-28 11:33 ` [PATCH 08/13] rt2x00: Remove obsolete rt2x00queue_align_payload Ivo van Doorn
2011-03-28 11:33 ` [PATCH 09/13] rt2x00: Implement tx power temperature compensation Ivo van Doorn
2011-03-28 11:34 ` [PATCH 10/13] rt2x00: Fix STBC transmissions to STAs with Rx STBC > 1 Ivo van Doorn
2011-03-28 11:34 ` [PATCH 11/13] rt2x00: Add support for the ZyXEL NWD-211AN USB Ivo van Doorn
2011-03-28 11:35 ` Ivo van Doorn [this message]
2011-03-28 11:35 ` [PATCH 13/13] rt2x00: Add an error message when trying to send on a full queue Ivo van Doorn
2011-03-29 0:37 ` [PATCH 05/13] rt2x00: Restructure bw_comp calculationATCHDOG flag Julian Calaby
2011-04-02 17:14 ` [PATCH 05/13 v2] rt2x00: Restructure bw_comp calculation Ivo van Doorn
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=201103281335.23166.IvDoorn@gmail.com \
--to=ivdoorn@gmail.com \
--cc=linux-wireless@vger.kernel.org \
--cc=linville@tuxdriver.com \
--cc=users@rt2x00.serialmonkey.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.