From 251985c92865bc68a0b17a6409a640914f3ab1ba Mon Sep 17 00:00:00 2001
From: Sara Sharon <sara.sharon@intel.com>
Date: Thu, 4 Jan 2018 14:06:07 +0200
Subject: [PATCH] iwlwifi: mvm: use shorter queues for mgmt and auxilary queues
Git-commit: 251985c92865bc68a0b17a6409a640914f3ab1ba
Patch-mainline: v4.18-rc1
References: FATE#326294
In 22000 devices, aka gen2, the TFS is 256 bytes.
In order to save memory, use shorter TX queue for aux and
mgmt queues, since there isn't much traffic on them.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/intel/iwlwifi/fw/api/txq.h | 1 +
drivers/net/wireless/intel/iwlwifi/mvm/utils.c | 9 +++++----
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/txq.h b/drivers/net/wireless/intel/iwlwifi/fw/api/txq.h
index 1f45b2ce5295..6ac240b6eace 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/txq.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/txq.h
@@ -132,6 +132,7 @@ enum iwl_tx_queue_cfg_actions {
};
#define IWL_DEFAULT_QUEUE_SIZE 256
+#define IWL_MGMT_QUEUE_SIZE 16
/**
* struct iwl_tx_queue_cfg_cmd - txq hw scheduler config command
* @sta_id: station id
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index 81c02d6e3d82..e597bc193e5c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -728,13 +728,14 @@ int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, int mac80211_queue,
.sta_id = sta_id,
.tid = tid,
};
- int queue;
+ int queue, size = IWL_DEFAULT_QUEUE_SIZE;
- if (cmd.tid == IWL_MAX_TID_COUNT)
+ if (cmd.tid == IWL_MAX_TID_COUNT) {
cmd.tid = IWL_MGMT_TID;
+ size = IWL_MGMT_QUEUE_SIZE;
+ }
queue = iwl_trans_txq_alloc(mvm->trans, (void *)&cmd,
- SCD_QUEUE_CFG, IWL_DEFAULT_QUEUE_SIZE,
- timeout);
+ SCD_QUEUE_CFG, size, timeout);
if (queue < 0) {
IWL_DEBUG_TX_QUEUES(mvm,
--
2.19.2