This is a note to let you know that I've just added the patch titled
iwlwifi: mvm: disable CTS to Self
to the 3.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iwlwifi-mvm-disable-cts-to-self.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From dc271ee0d04d12d6bfabacbec803289a7072fbd9 Mon Sep 17 00:00:00 2001
From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Date: Thu, 3 Jul 2014 20:46:35 +0300
Subject: iwlwifi: mvm: disable CTS to Self
From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
commit dc271ee0d04d12d6bfabacbec803289a7072fbd9 upstream.
Firmware folks seem say that this flag can make trouble.
Drop it. The advantage of CTS to self is that it slightly
reduces the cost of the protection, but make the protection
less reliable.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
--- a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
@@ -667,13 +667,9 @@ static void iwl_mvm_mac_ctxt_cmd_common(
if (vif->bss_conf.qos)
cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
- /* Don't use cts to self as the fw doesn't support it currently. */
- if (vif->bss_conf.use_cts_prot) {
+ if (vif->bss_conf.use_cts_prot)
cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
- if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 8)
- cmd->protection_flags |=
- cpu_to_le32(MAC_PROT_FLG_SELF_CTS_EN);
- }
+
IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
vif->bss_conf.use_cts_prot,
vif->bss_conf.ht_operation_mode);
Patches currently in stable-queue which might be from emmanuel.grumbach@xxxxxxxxx are
queue-3.15/iwlwifi-update-the-7265-series-hw-ids.patch
queue-3.15/iwlwifi-dvm-don-t-enable-cts-to-self.patch
queue-3.15/iwlwifi-mvm-disable-cts-to-self.patch
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