Re:

[Mohammed Shafi <shafi.wireless@gmail.com>]

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On Tue, Jan 31, 2012 at 1:13 AM, Laurent Bonnans <bonnans.l@gmail.com> wrote:
> Since the update from linux 3.2.1 to 3.2.2, dhcp stopped working on
> some APs on my laptop with an AR9285 Wireless card.
>
> dhcp works fine on an open wifi network but receives no response on a
> wep network I use. I haven't been able to test it on a third network
> for now.

 reverting  "ath9k_hw: fix interpretation of the rx KeyMiss flag" does
helps.  i  need to analyze
if it exposes some real issue which need to be fixed.


> Reverting to 3.2.1 solved the issue which is still there in the latest
> git revision as of today.
>
> DHCPDISCOVER requests are still sent but no ACK is received (nothing
> in Wireshark).
>
> dhcp failure may be one particular instance of the problem but I
> haven't been able to connect with a static ip (my ap doesn't like it)
> so this is the
> only result I know.
>
>
> ver_linux output (latest git kernel) :
>
> Linux litbox 3.3.0-rc1-hack-00383-g0a96265 #1 SMP PREEMPT Mon Jan 30
> 02:22:54 CET 2012 x86_64 Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
> GenuineIntel GNU/Linux
>
> Gnu C                  4.6.2
> Gnu make               3.82
> binutils               2.22.0.20111227
> util-linux             2.20.1
> mount                  support
> module-init-tools      4
> e2fsprogs              1.42
> jfsutils               1.1.15
> reiserfsprogs          3.6.21
> xfsprogs               3.1.7
> pcmciautils            018
> PPP                    2.4.5
> Linux C Library        2.15
> Dynamic linker (ldd)   2.15
> Linux C++ Library      so.6.0
> Procps                 3.2.8
> Net-tools              1.60
> Kbd                    1.15.3
> Sh-utils               8.15
> wireless-tools         29
> Modules Loaded         ipv6 cpufreq_ondemand fuse xts gf128mul
> uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev
> v4l2_compat_ioctl32 media arc4 ath9k ath9k_common ath9k_hw nouveau
> ehci_hcd usbcore i915 snd_hda_codec_hdmi snd_hda_codec_realtek joydev
> ath ttm intel_ips mac80211 cfg80211 asus_laptop sparse_keymap rfkill
> drm_kms_helper drm snd_hda_intel snd_hda_codec snd_hwdep mxm_wmi
> psmouse i2c_algo_bit serio_raw i2c_core pcspkr input_polldev mei
> iTCO_wdt usb_common evdev intel_agp iTCO_vendor_support intel_gtt
> atl1c wmi video snd_pcm snd_page_alloc snd_timer snd soundcore thermal
> battery ac button tun kvm_intel kvm aes_x86_64 aes_generic
> acpi_cpufreq mperf processor freq_table ext4 crc16 jbd2 mbcache
> dm_crypt dm_mod sd_mod ahci libahci libata scsi_mod
> --
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-- 
shafi

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From 171ef4d092d47bf63b33b1e4d5eafd4320e6bb1d Mon Sep 17 00:00:00 2001
From: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Date: Tue, 31 Jan 2012 10:36:47 +0530
Subject: [PATCH] Revert "ath9k_hw: fix interpretation of the rx KeyMiss flag"

This reverts commit 7a532fe7131216a02c81a6c1b1f8632da1195a58.
---
 drivers/net/wireless/ath/ath9k/ar9003_mac.c |    5 ++---
 drivers/net/wireless/ath/ath9k/mac.c        |    5 ++---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 09b8c9d..88c81c5 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -557,11 +557,10 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
 			rxs->rs_status |= ATH9K_RXERR_DECRYPT;
 		else if (rxsp->status11 & AR_MichaelErr)
 			rxs->rs_status |= ATH9K_RXERR_MIC;
+		if (rxsp->status11 & AR_KeyMiss)
+			rxs->rs_status |= ATH9K_RXERR_KEYMISS;
 	}
 
-	if (rxsp->status11 & AR_KeyMiss)
-		rxs->rs_status |= ATH9K_RXERR_KEYMISS;
-
 	return 0;
 }
 EXPORT_SYMBOL(ath9k_hw_process_rxdesc_edma);
diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
index e196aba..fd3f19c 100644
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -618,11 +618,10 @@ int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
 			rs->rs_status |= ATH9K_RXERR_DECRYPT;
 		else if (ads.ds_rxstatus8 & AR_MichaelErr)
 			rs->rs_status |= ATH9K_RXERR_MIC;
+		if (ads.ds_rxstatus8 & AR_KeyMiss)
+			rs->rs_status |= ATH9K_RXERR_KEYMISS;
 	}
 
-	if (ads.ds_rxstatus8 & AR_KeyMiss)
-		rs->rs_status |= ATH9K_RXERR_KEYMISS;
-
 	return 0;
 }
 EXPORT_SYMBOL(ath9k_hw_rxprocdesc);
-- 
1.7.0.4