1227 lines
36 KiB
C
1227 lines
36 KiB
C
/******************************************************************************
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/ieee80211.h>
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#include "iwl-dev.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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#include "iwl-agn-hw.h"
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#include "iwl-agn.h"
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#include "iwl-trans.h"
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static void iwlagn_tx_cmd_protection(struct iwl_priv *priv,
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struct ieee80211_tx_info *info,
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__le16 fc, __le32 *tx_flags)
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{
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if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS ||
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info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT ||
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info->flags & IEEE80211_TX_CTL_AMPDU)
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*tx_flags |= TX_CMD_FLG_PROT_REQUIRE_MSK;
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}
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/*
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* handle build REPLY_TX command notification.
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*/
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static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv,
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struct sk_buff *skb,
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struct iwl_tx_cmd *tx_cmd,
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struct ieee80211_tx_info *info,
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struct ieee80211_hdr *hdr, u8 sta_id)
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{
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__le16 fc = hdr->frame_control;
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__le32 tx_flags = tx_cmd->tx_flags;
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tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
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if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
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tx_flags |= TX_CMD_FLG_ACK_MSK;
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else
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tx_flags &= ~TX_CMD_FLG_ACK_MSK;
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if (ieee80211_is_probe_resp(fc))
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tx_flags |= TX_CMD_FLG_TSF_MSK;
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else if (ieee80211_is_back_req(fc))
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tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
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else if (info->band == IEEE80211_BAND_2GHZ &&
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cfg(priv)->bt_params &&
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cfg(priv)->bt_params->advanced_bt_coexist &&
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(ieee80211_is_auth(fc) || ieee80211_is_assoc_req(fc) ||
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ieee80211_is_reassoc_req(fc) ||
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skb->protocol == cpu_to_be16(ETH_P_PAE)))
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tx_flags |= TX_CMD_FLG_IGNORE_BT;
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tx_cmd->sta_id = sta_id;
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if (ieee80211_has_morefrags(fc))
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tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
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if (ieee80211_is_data_qos(fc)) {
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u8 *qc = ieee80211_get_qos_ctl(hdr);
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tx_cmd->tid_tspec = qc[0] & 0xf;
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tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
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} else {
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if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
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tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
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else
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tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
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}
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iwlagn_tx_cmd_protection(priv, info, fc, &tx_flags);
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tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
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if (ieee80211_is_mgmt(fc)) {
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if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
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tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
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else
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tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
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} else {
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tx_cmd->timeout.pm_frame_timeout = 0;
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}
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tx_cmd->driver_txop = 0;
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tx_cmd->tx_flags = tx_flags;
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tx_cmd->next_frame_len = 0;
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}
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static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv,
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struct iwl_tx_cmd *tx_cmd,
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struct ieee80211_tx_info *info,
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__le16 fc)
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{
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u32 rate_flags;
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int rate_idx;
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u8 rts_retry_limit;
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u8 data_retry_limit;
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u8 rate_plcp;
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if (priv->shrd->wowlan) {
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rts_retry_limit = IWLAGN_LOW_RETRY_LIMIT;
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data_retry_limit = IWLAGN_LOW_RETRY_LIMIT;
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} else {
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/* Set retry limit on RTS packets */
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rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT;
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/* Set retry limit on DATA packets and Probe Responses*/
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if (ieee80211_is_probe_resp(fc)) {
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data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT;
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rts_retry_limit =
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min(data_retry_limit, rts_retry_limit);
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} else if (ieee80211_is_back_req(fc))
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data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT;
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else
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data_retry_limit = IWLAGN_DEFAULT_TX_RETRY;
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}
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tx_cmd->data_retry_limit = data_retry_limit;
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tx_cmd->rts_retry_limit = rts_retry_limit;
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/* DATA packets will use the uCode station table for rate/antenna
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* selection */
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if (ieee80211_is_data(fc)) {
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tx_cmd->initial_rate_index = 0;
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tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK;
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#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
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if (priv->tm_fixed_rate) {
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/*
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* rate overwrite by testmode
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* we not only send lq command to change rate
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* we also re-enforce per data pkt base.
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*/
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tx_cmd->tx_flags &= ~TX_CMD_FLG_STA_RATE_MSK;
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memcpy(&tx_cmd->rate_n_flags, &priv->tm_fixed_rate,
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sizeof(tx_cmd->rate_n_flags));
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}
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#endif
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return;
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} else if (ieee80211_is_back_req(fc))
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tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK;
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/**
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* If the current TX rate stored in mac80211 has the MCS bit set, it's
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* not really a TX rate. Thus, we use the lowest supported rate for
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* this band. Also use the lowest supported rate if the stored rate
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* index is invalid.
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*/
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rate_idx = info->control.rates[0].idx;
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if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS ||
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(rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY))
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rate_idx = rate_lowest_index(&priv->bands[info->band],
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info->control.sta);
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/* For 5 GHZ band, remap mac80211 rate indices into driver indices */
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if (info->band == IEEE80211_BAND_5GHZ)
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rate_idx += IWL_FIRST_OFDM_RATE;
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/* Get PLCP rate for tx_cmd->rate_n_flags */
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rate_plcp = iwl_rates[rate_idx].plcp;
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/* Zero out flags for this packet */
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rate_flags = 0;
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/* Set CCK flag as needed */
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if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE))
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rate_flags |= RATE_MCS_CCK_MSK;
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/* Set up antennas */
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if (cfg(priv)->bt_params &&
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cfg(priv)->bt_params->advanced_bt_coexist &&
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priv->bt_full_concurrent) {
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/* operated as 1x1 in full concurrency mode */
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priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
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first_antenna(hw_params(priv).valid_tx_ant));
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} else
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priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
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hw_params(priv).valid_tx_ant);
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rate_flags |= iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
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/* Set the rate in the TX cmd */
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tx_cmd->rate_n_flags = iwl_hw_set_rate_n_flags(rate_plcp, rate_flags);
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}
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static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv *priv,
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struct ieee80211_tx_info *info,
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struct iwl_tx_cmd *tx_cmd,
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struct sk_buff *skb_frag,
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int sta_id)
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{
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struct ieee80211_key_conf *keyconf = info->control.hw_key;
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switch (keyconf->cipher) {
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case WLAN_CIPHER_SUITE_CCMP:
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tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
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memcpy(tx_cmd->key, keyconf->key, keyconf->keylen);
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if (info->flags & IEEE80211_TX_CTL_AMPDU)
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tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
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IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
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break;
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case WLAN_CIPHER_SUITE_TKIP:
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tx_cmd->sec_ctl = TX_CMD_SEC_TKIP;
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ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key);
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IWL_DEBUG_TX(priv, "tx_cmd with tkip hwcrypto\n");
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break;
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case WLAN_CIPHER_SUITE_WEP104:
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tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
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/* fall through */
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case WLAN_CIPHER_SUITE_WEP40:
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tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP |
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(keyconf->keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT);
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memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen);
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IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
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"with key %d\n", keyconf->keyidx);
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break;
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default:
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IWL_ERR(priv, "Unknown encode cipher %x\n", keyconf->cipher);
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break;
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}
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}
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/*
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* start REPLY_TX command process
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*/
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int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
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{
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct iwl_station_priv *sta_priv = NULL;
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struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
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struct iwl_device_cmd *dev_cmd = NULL;
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struct iwl_tx_cmd *tx_cmd;
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__le16 fc;
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u8 hdr_len;
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u16 len, seq_number = 0;
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u8 sta_id, tid = IWL_MAX_TID_COUNT;
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unsigned long flags;
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bool is_agg = false;
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if (info->control.vif)
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ctx = iwl_rxon_ctx_from_vif(info->control.vif);
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spin_lock_irqsave(&priv->shrd->lock, flags);
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if (iwl_is_rfkill(priv->shrd)) {
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IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
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goto drop_unlock_priv;
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}
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fc = hdr->frame_control;
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#ifdef CONFIG_IWLWIFI_DEBUG
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if (ieee80211_is_auth(fc))
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IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
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else if (ieee80211_is_assoc_req(fc))
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IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
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else if (ieee80211_is_reassoc_req(fc))
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IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
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#endif
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if (unlikely(ieee80211_is_probe_resp(fc))) {
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struct iwl_wipan_noa_data *noa_data =
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rcu_dereference(priv->noa_data);
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if (noa_data &&
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pskb_expand_head(skb, 0, noa_data->length,
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GFP_ATOMIC) == 0) {
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memcpy(skb_put(skb, noa_data->length),
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noa_data->data, noa_data->length);
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hdr = (struct ieee80211_hdr *)skb->data;
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}
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}
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hdr_len = ieee80211_hdrlen(fc);
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/* For management frames use broadcast id to do not break aggregation */
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if (!ieee80211_is_data(fc))
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sta_id = ctx->bcast_sta_id;
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else {
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/* Find index into station table for destination station */
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sta_id = iwl_sta_id_or_broadcast(priv, ctx, info->control.sta);
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if (sta_id == IWL_INVALID_STATION) {
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IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
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hdr->addr1);
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goto drop_unlock_priv;
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}
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}
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IWL_DEBUG_TX(priv, "station Id %d\n", sta_id);
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if (info->control.sta)
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sta_priv = (void *)info->control.sta->drv_priv;
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if (sta_priv && sta_priv->asleep &&
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(info->flags & IEEE80211_TX_CTL_POLL_RESPONSE)) {
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/*
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* This sends an asynchronous command to the device,
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* but we can rely on it being processed before the
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* next frame is processed -- and the next frame to
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* this station is the one that will consume this
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* counter.
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* For now set the counter to just 1 since we do not
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* support uAPSD yet.
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*/
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iwl_sta_modify_sleep_tx_count(priv, sta_id, 1);
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}
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if (info->flags & IEEE80211_TX_CTL_AMPDU)
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is_agg = true;
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/* irqs already disabled/saved above when locking priv->shrd->lock */
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spin_lock(&priv->shrd->sta_lock);
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dev_cmd = kmem_cache_alloc(priv->tx_cmd_pool, GFP_ATOMIC);
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if (unlikely(!dev_cmd))
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goto drop_unlock_sta;
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memset(dev_cmd, 0, sizeof(*dev_cmd));
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tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload;
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/* Total # bytes to be transmitted */
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len = (u16)skb->len;
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tx_cmd->len = cpu_to_le16(len);
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if (info->control.hw_key)
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iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb, sta_id);
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/* TODO need this for burst mode later on */
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iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id);
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iwl_dbg_log_tx_data_frame(priv, len, hdr);
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iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, fc);
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iwl_update_stats(priv, true, fc, len);
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memset(&info->status, 0, sizeof(info->status));
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info->driver_data[0] = ctx;
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info->driver_data[1] = dev_cmd;
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if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) {
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u8 *qc = NULL;
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struct iwl_tid_data *tid_data;
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qc = ieee80211_get_qos_ctl(hdr);
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tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
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if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
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goto drop_unlock_sta;
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tid_data = &priv->tid_data[sta_id][tid];
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/* aggregation is on for this <sta,tid> */
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if (info->flags & IEEE80211_TX_CTL_AMPDU &&
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tid_data->agg.state != IWL_AGG_ON) {
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IWL_ERR(priv, "TX_CTL_AMPDU while not in AGG:"
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" Tx flags = 0x%08x, agg.state = %d",
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info->flags, tid_data->agg.state);
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IWL_ERR(priv, "sta_id = %d, tid = %d seq_num = %d",
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sta_id, tid, SEQ_TO_SN(tid_data->seq_number));
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goto drop_unlock_sta;
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}
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/* We can receive packets from the stack in IWL_AGG_{ON,OFF}
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* only. Check this here.
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*/
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if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON &&
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tid_data->agg.state != IWL_AGG_OFF,
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"Tx while agg.state = %d", tid_data->agg.state))
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goto drop_unlock_sta;
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seq_number = tid_data->seq_number;
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seq_number &= IEEE80211_SCTL_SEQ;
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hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
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hdr->seq_ctrl |= cpu_to_le16(seq_number);
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seq_number += 0x10;
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}
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|
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/* Copy MAC header from skb into command buffer */
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memcpy(tx_cmd->hdr, hdr, hdr_len);
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if (iwl_trans_tx(trans(priv), skb, dev_cmd, ctx->ctxid, sta_id, tid))
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goto drop_unlock_sta;
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if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc) &&
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!ieee80211_has_morefrags(fc))
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priv->tid_data[sta_id][tid].seq_number = seq_number;
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spin_unlock(&priv->shrd->sta_lock);
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spin_unlock_irqrestore(&priv->shrd->lock, flags);
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/*
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* Avoid atomic ops if it isn't an associated client.
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* Also, if this is a packet for aggregation, don't
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* increase the counter because the ucode will stop
|
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* aggregation queues when their respective station
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* goes to sleep.
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*/
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if (sta_priv && sta_priv->client && !is_agg)
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atomic_inc(&sta_priv->pending_frames);
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return 0;
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drop_unlock_sta:
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if (dev_cmd)
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kmem_cache_free(priv->tx_cmd_pool, dev_cmd);
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spin_unlock(&priv->shrd->sta_lock);
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drop_unlock_priv:
|
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spin_unlock_irqrestore(&priv->shrd->lock, flags);
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return -1;
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}
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|
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int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
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struct ieee80211_sta *sta, u16 tid)
|
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{
|
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struct iwl_tid_data *tid_data;
|
|
unsigned long flags;
|
|
int sta_id;
|
|
|
|
sta_id = iwl_sta_id(sta);
|
|
|
|
if (sta_id == IWL_INVALID_STATION) {
|
|
IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
|
|
return -ENXIO;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
|
|
|
|
tid_data = &priv->tid_data[sta_id][tid];
|
|
|
|
switch (priv->tid_data[sta_id][tid].agg.state) {
|
|
case IWL_EMPTYING_HW_QUEUE_ADDBA:
|
|
/*
|
|
* This can happen if the peer stops aggregation
|
|
* again before we've had a chance to drain the
|
|
* queue we selected previously, i.e. before the
|
|
* session was really started completely.
|
|
*/
|
|
IWL_DEBUG_HT(priv, "AGG stop before setup done\n");
|
|
goto turn_off;
|
|
case IWL_AGG_ON:
|
|
break;
|
|
default:
|
|
IWL_WARN(priv, "Stopping AGG while state not ON "
|
|
"or starting for %d on %d (%d)\n", sta_id, tid,
|
|
priv->tid_data[sta_id][tid].agg.state);
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number);
|
|
|
|
/* There are still packets for this RA / TID in the HW */
|
|
if (tid_data->agg.ssn != tid_data->next_reclaimed) {
|
|
IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, "
|
|
"next_recl = %d",
|
|
tid_data->agg.ssn,
|
|
tid_data->next_reclaimed);
|
|
priv->tid_data[sta_id][tid].agg.state =
|
|
IWL_EMPTYING_HW_QUEUE_DELBA;
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d",
|
|
tid_data->agg.ssn);
|
|
turn_off:
|
|
priv->tid_data[sta_id][tid].agg.state = IWL_AGG_OFF;
|
|
|
|
/* do not restore/save irqs */
|
|
spin_unlock(&priv->shrd->sta_lock);
|
|
spin_lock(&priv->shrd->lock);
|
|
|
|
iwl_trans_tx_agg_disable(trans(priv), sta_id, tid);
|
|
|
|
spin_unlock_irqrestore(&priv->shrd->lock, flags);
|
|
|
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta, u16 tid, u16 *ssn)
|
|
{
|
|
struct iwl_tid_data *tid_data;
|
|
unsigned long flags;
|
|
int sta_id;
|
|
int ret;
|
|
|
|
IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n",
|
|
sta->addr, tid);
|
|
|
|
sta_id = iwl_sta_id(sta);
|
|
if (sta_id == IWL_INVALID_STATION) {
|
|
IWL_ERR(priv, "Start AGG on invalid station\n");
|
|
return -ENXIO;
|
|
}
|
|
if (unlikely(tid >= IWL_MAX_TID_COUNT))
|
|
return -EINVAL;
|
|
|
|
if (priv->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) {
|
|
IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
|
|
|
|
tid_data = &priv->tid_data[sta_id][tid];
|
|
tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number);
|
|
|
|
*ssn = tid_data->agg.ssn;
|
|
|
|
ret = iwl_trans_tx_agg_alloc(trans(priv), sta_id, tid);
|
|
if (ret) {
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
if (*ssn == tid_data->next_reclaimed) {
|
|
IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d",
|
|
tid_data->agg.ssn);
|
|
tid_data->agg.state = IWL_AGG_ON;
|
|
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
|
|
} else {
|
|
IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, "
|
|
"next_reclaimed = %d",
|
|
tid_data->agg.ssn,
|
|
tid_data->next_reclaimed);
|
|
tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta, u16 tid, u8 buf_size)
|
|
{
|
|
struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
|
|
struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
|
|
unsigned long flags;
|
|
u16 ssn;
|
|
|
|
buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
|
|
|
|
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
|
|
ssn = priv->tid_data[sta_priv->sta_id][tid].agg.ssn;
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
|
|
iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, sta_priv->sta_id, tid,
|
|
buf_size, ssn);
|
|
|
|
/*
|
|
* If the limit is 0, then it wasn't initialised yet,
|
|
* use the default. We can do that since we take the
|
|
* minimum below, and we don't want to go above our
|
|
* default due to hardware restrictions.
|
|
*/
|
|
if (sta_priv->max_agg_bufsize == 0)
|
|
sta_priv->max_agg_bufsize =
|
|
LINK_QUAL_AGG_FRAME_LIMIT_DEF;
|
|
|
|
/*
|
|
* Even though in theory the peer could have different
|
|
* aggregation reorder buffer sizes for different sessions,
|
|
* our ucode doesn't allow for that and has a global limit
|
|
* for each station. Therefore, use the minimum of all the
|
|
* aggregation sessions and our default value.
|
|
*/
|
|
sta_priv->max_agg_bufsize =
|
|
min(sta_priv->max_agg_bufsize, buf_size);
|
|
|
|
if (cfg(priv)->ht_params &&
|
|
cfg(priv)->ht_params->use_rts_for_aggregation) {
|
|
/*
|
|
* switch to RTS/CTS if it is the prefer protection
|
|
* method for HT traffic
|
|
*/
|
|
|
|
sta_priv->lq_sta.lq.general_params.flags |=
|
|
LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
|
|
}
|
|
priv->agg_tids_count++;
|
|
IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
|
|
priv->agg_tids_count);
|
|
|
|
sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
|
|
sta_priv->max_agg_bufsize;
|
|
|
|
IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
|
|
sta->addr, tid);
|
|
|
|
return iwl_send_lq_cmd(priv, ctx,
|
|
&sta_priv->lq_sta.lq, CMD_ASYNC, false);
|
|
}
|
|
|
|
static void iwlagn_check_ratid_empty(struct iwl_priv *priv, int sta_id, u8 tid)
|
|
{
|
|
struct iwl_tid_data *tid_data = &priv->tid_data[sta_id][tid];
|
|
enum iwl_rxon_context_id ctx;
|
|
struct ieee80211_vif *vif;
|
|
u8 *addr;
|
|
|
|
lockdep_assert_held(&priv->shrd->sta_lock);
|
|
|
|
addr = priv->stations[sta_id].sta.sta.addr;
|
|
ctx = priv->stations[sta_id].ctxid;
|
|
vif = priv->contexts[ctx].vif;
|
|
|
|
switch (priv->tid_data[sta_id][tid].agg.state) {
|
|
case IWL_EMPTYING_HW_QUEUE_DELBA:
|
|
/* There are no packets for this RA / TID in the HW any more */
|
|
if (tid_data->agg.ssn == tid_data->next_reclaimed) {
|
|
IWL_DEBUG_TX_QUEUES(priv,
|
|
"Can continue DELBA flow ssn = next_recl ="
|
|
" %d", tid_data->next_reclaimed);
|
|
iwl_trans_tx_agg_disable(trans(priv), sta_id, tid);
|
|
tid_data->agg.state = IWL_AGG_OFF;
|
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
|
|
}
|
|
break;
|
|
case IWL_EMPTYING_HW_QUEUE_ADDBA:
|
|
/* There are no packets for this RA / TID in the HW any more */
|
|
if (tid_data->agg.ssn == tid_data->next_reclaimed) {
|
|
IWL_DEBUG_TX_QUEUES(priv,
|
|
"Can continue ADDBA flow ssn = next_recl ="
|
|
" %d", tid_data->next_reclaimed);
|
|
tid_data->agg.state = IWL_AGG_ON;
|
|
ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void iwlagn_non_agg_tx_status(struct iwl_priv *priv,
|
|
struct iwl_rxon_context *ctx,
|
|
const u8 *addr1)
|
|
{
|
|
struct ieee80211_sta *sta;
|
|
struct iwl_station_priv *sta_priv;
|
|
|
|
rcu_read_lock();
|
|
sta = ieee80211_find_sta(ctx->vif, addr1);
|
|
if (sta) {
|
|
sta_priv = (void *)sta->drv_priv;
|
|
/* avoid atomic ops if this isn't a client */
|
|
if (sta_priv->client &&
|
|
atomic_dec_return(&sta_priv->pending_frames) == 0)
|
|
ieee80211_sta_block_awake(priv->hw, sta, false);
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
/**
|
|
* translate ucode response to mac80211 tx status control values
|
|
*/
|
|
static void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
|
|
struct ieee80211_tx_info *info)
|
|
{
|
|
struct ieee80211_tx_rate *r = &info->control.rates[0];
|
|
|
|
info->antenna_sel_tx =
|
|
((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
|
|
if (rate_n_flags & RATE_MCS_HT_MSK)
|
|
r->flags |= IEEE80211_TX_RC_MCS;
|
|
if (rate_n_flags & RATE_MCS_GF_MSK)
|
|
r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
|
|
if (rate_n_flags & RATE_MCS_HT40_MSK)
|
|
r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
|
|
if (rate_n_flags & RATE_MCS_DUP_MSK)
|
|
r->flags |= IEEE80211_TX_RC_DUP_DATA;
|
|
if (rate_n_flags & RATE_MCS_SGI_MSK)
|
|
r->flags |= IEEE80211_TX_RC_SHORT_GI;
|
|
r->idx = iwlagn_hwrate_to_mac80211_idx(rate_n_flags, info->band);
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
const char *iwl_get_tx_fail_reason(u32 status)
|
|
{
|
|
#define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x
|
|
#define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x
|
|
|
|
switch (status & TX_STATUS_MSK) {
|
|
case TX_STATUS_SUCCESS:
|
|
return "SUCCESS";
|
|
TX_STATUS_POSTPONE(DELAY);
|
|
TX_STATUS_POSTPONE(FEW_BYTES);
|
|
TX_STATUS_POSTPONE(BT_PRIO);
|
|
TX_STATUS_POSTPONE(QUIET_PERIOD);
|
|
TX_STATUS_POSTPONE(CALC_TTAK);
|
|
TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY);
|
|
TX_STATUS_FAIL(SHORT_LIMIT);
|
|
TX_STATUS_FAIL(LONG_LIMIT);
|
|
TX_STATUS_FAIL(FIFO_UNDERRUN);
|
|
TX_STATUS_FAIL(DRAIN_FLOW);
|
|
TX_STATUS_FAIL(RFKILL_FLUSH);
|
|
TX_STATUS_FAIL(LIFE_EXPIRE);
|
|
TX_STATUS_FAIL(DEST_PS);
|
|
TX_STATUS_FAIL(HOST_ABORTED);
|
|
TX_STATUS_FAIL(BT_RETRY);
|
|
TX_STATUS_FAIL(STA_INVALID);
|
|
TX_STATUS_FAIL(FRAG_DROPPED);
|
|
TX_STATUS_FAIL(TID_DISABLE);
|
|
TX_STATUS_FAIL(FIFO_FLUSHED);
|
|
TX_STATUS_FAIL(INSUFFICIENT_CF_POLL);
|
|
TX_STATUS_FAIL(PASSIVE_NO_RX);
|
|
TX_STATUS_FAIL(NO_BEACON_ON_RADAR);
|
|
}
|
|
|
|
return "UNKNOWN";
|
|
|
|
#undef TX_STATUS_FAIL
|
|
#undef TX_STATUS_POSTPONE
|
|
}
|
|
#endif /* CONFIG_IWLWIFI_DEBUG */
|
|
|
|
static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status)
|
|
{
|
|
status &= AGG_TX_STATUS_MSK;
|
|
|
|
switch (status) {
|
|
case AGG_TX_STATE_UNDERRUN_MSK:
|
|
priv->reply_agg_tx_stats.underrun++;
|
|
break;
|
|
case AGG_TX_STATE_BT_PRIO_MSK:
|
|
priv->reply_agg_tx_stats.bt_prio++;
|
|
break;
|
|
case AGG_TX_STATE_FEW_BYTES_MSK:
|
|
priv->reply_agg_tx_stats.few_bytes++;
|
|
break;
|
|
case AGG_TX_STATE_ABORT_MSK:
|
|
priv->reply_agg_tx_stats.abort++;
|
|
break;
|
|
case AGG_TX_STATE_LAST_SENT_TTL_MSK:
|
|
priv->reply_agg_tx_stats.last_sent_ttl++;
|
|
break;
|
|
case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK:
|
|
priv->reply_agg_tx_stats.last_sent_try++;
|
|
break;
|
|
case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK:
|
|
priv->reply_agg_tx_stats.last_sent_bt_kill++;
|
|
break;
|
|
case AGG_TX_STATE_SCD_QUERY_MSK:
|
|
priv->reply_agg_tx_stats.scd_query++;
|
|
break;
|
|
case AGG_TX_STATE_TEST_BAD_CRC32_MSK:
|
|
priv->reply_agg_tx_stats.bad_crc32++;
|
|
break;
|
|
case AGG_TX_STATE_RESPONSE_MSK:
|
|
priv->reply_agg_tx_stats.response++;
|
|
break;
|
|
case AGG_TX_STATE_DUMP_TX_MSK:
|
|
priv->reply_agg_tx_stats.dump_tx++;
|
|
break;
|
|
case AGG_TX_STATE_DELAY_TX_MSK:
|
|
priv->reply_agg_tx_stats.delay_tx++;
|
|
break;
|
|
default:
|
|
priv->reply_agg_tx_stats.unknown++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void iwl_rx_reply_tx_agg(struct iwl_priv *priv,
|
|
struct iwlagn_tx_resp *tx_resp)
|
|
{
|
|
struct agg_tx_status *frame_status = &tx_resp->status;
|
|
int tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >>
|
|
IWLAGN_TX_RES_TID_POS;
|
|
int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >>
|
|
IWLAGN_TX_RES_RA_POS;
|
|
struct iwl_ht_agg *agg = &priv->tid_data[sta_id][tid].agg;
|
|
u32 status = le16_to_cpu(tx_resp->status.status);
|
|
int i;
|
|
|
|
if (agg->wait_for_ba)
|
|
IWL_DEBUG_TX_REPLY(priv,
|
|
"got tx response w/o block-ack\n");
|
|
|
|
agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
|
|
agg->wait_for_ba = (tx_resp->frame_count > 1);
|
|
|
|
/*
|
|
* If the BT kill count is non-zero, we'll get this
|
|
* notification again.
|
|
*/
|
|
if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 &&
|
|
cfg(priv)->bt_params &&
|
|
cfg(priv)->bt_params->advanced_bt_coexist) {
|
|
IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n");
|
|
}
|
|
|
|
if (tx_resp->frame_count == 1)
|
|
return;
|
|
|
|
/* Construct bit-map of pending frames within Tx window */
|
|
for (i = 0; i < tx_resp->frame_count; i++) {
|
|
u16 fstatus = le16_to_cpu(frame_status[i].status);
|
|
|
|
if (status & AGG_TX_STATUS_MSK)
|
|
iwlagn_count_agg_tx_err_status(priv, fstatus);
|
|
|
|
if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
|
|
AGG_TX_STATE_ABORT_MSK))
|
|
continue;
|
|
|
|
IWL_DEBUG_TX_REPLY(priv, "status %s (0x%08x), "
|
|
"try-count (0x%08x)\n",
|
|
iwl_get_agg_tx_fail_reason(fstatus),
|
|
fstatus & AGG_TX_STATUS_MSK,
|
|
fstatus & AGG_TX_TRY_MSK);
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
#define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x
|
|
|
|
const char *iwl_get_agg_tx_fail_reason(u16 status)
|
|
{
|
|
status &= AGG_TX_STATUS_MSK;
|
|
switch (status) {
|
|
case AGG_TX_STATE_TRANSMITTED:
|
|
return "SUCCESS";
|
|
AGG_TX_STATE_FAIL(UNDERRUN_MSK);
|
|
AGG_TX_STATE_FAIL(BT_PRIO_MSK);
|
|
AGG_TX_STATE_FAIL(FEW_BYTES_MSK);
|
|
AGG_TX_STATE_FAIL(ABORT_MSK);
|
|
AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK);
|
|
AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK);
|
|
AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK);
|
|
AGG_TX_STATE_FAIL(SCD_QUERY_MSK);
|
|
AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK);
|
|
AGG_TX_STATE_FAIL(RESPONSE_MSK);
|
|
AGG_TX_STATE_FAIL(DUMP_TX_MSK);
|
|
AGG_TX_STATE_FAIL(DELAY_TX_MSK);
|
|
}
|
|
|
|
return "UNKNOWN";
|
|
}
|
|
#endif /* CONFIG_IWLWIFI_DEBUG */
|
|
|
|
static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp)
|
|
{
|
|
return le32_to_cpup((__le32 *)&tx_resp->status +
|
|
tx_resp->frame_count) & MAX_SN;
|
|
}
|
|
|
|
static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status)
|
|
{
|
|
status &= TX_STATUS_MSK;
|
|
|
|
switch (status) {
|
|
case TX_STATUS_POSTPONE_DELAY:
|
|
priv->reply_tx_stats.pp_delay++;
|
|
break;
|
|
case TX_STATUS_POSTPONE_FEW_BYTES:
|
|
priv->reply_tx_stats.pp_few_bytes++;
|
|
break;
|
|
case TX_STATUS_POSTPONE_BT_PRIO:
|
|
priv->reply_tx_stats.pp_bt_prio++;
|
|
break;
|
|
case TX_STATUS_POSTPONE_QUIET_PERIOD:
|
|
priv->reply_tx_stats.pp_quiet_period++;
|
|
break;
|
|
case TX_STATUS_POSTPONE_CALC_TTAK:
|
|
priv->reply_tx_stats.pp_calc_ttak++;
|
|
break;
|
|
case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY:
|
|
priv->reply_tx_stats.int_crossed_retry++;
|
|
break;
|
|
case TX_STATUS_FAIL_SHORT_LIMIT:
|
|
priv->reply_tx_stats.short_limit++;
|
|
break;
|
|
case TX_STATUS_FAIL_LONG_LIMIT:
|
|
priv->reply_tx_stats.long_limit++;
|
|
break;
|
|
case TX_STATUS_FAIL_FIFO_UNDERRUN:
|
|
priv->reply_tx_stats.fifo_underrun++;
|
|
break;
|
|
case TX_STATUS_FAIL_DRAIN_FLOW:
|
|
priv->reply_tx_stats.drain_flow++;
|
|
break;
|
|
case TX_STATUS_FAIL_RFKILL_FLUSH:
|
|
priv->reply_tx_stats.rfkill_flush++;
|
|
break;
|
|
case TX_STATUS_FAIL_LIFE_EXPIRE:
|
|
priv->reply_tx_stats.life_expire++;
|
|
break;
|
|
case TX_STATUS_FAIL_DEST_PS:
|
|
priv->reply_tx_stats.dest_ps++;
|
|
break;
|
|
case TX_STATUS_FAIL_HOST_ABORTED:
|
|
priv->reply_tx_stats.host_abort++;
|
|
break;
|
|
case TX_STATUS_FAIL_BT_RETRY:
|
|
priv->reply_tx_stats.bt_retry++;
|
|
break;
|
|
case TX_STATUS_FAIL_STA_INVALID:
|
|
priv->reply_tx_stats.sta_invalid++;
|
|
break;
|
|
case TX_STATUS_FAIL_FRAG_DROPPED:
|
|
priv->reply_tx_stats.frag_drop++;
|
|
break;
|
|
case TX_STATUS_FAIL_TID_DISABLE:
|
|
priv->reply_tx_stats.tid_disable++;
|
|
break;
|
|
case TX_STATUS_FAIL_FIFO_FLUSHED:
|
|
priv->reply_tx_stats.fifo_flush++;
|
|
break;
|
|
case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL:
|
|
priv->reply_tx_stats.insuff_cf_poll++;
|
|
break;
|
|
case TX_STATUS_FAIL_PASSIVE_NO_RX:
|
|
priv->reply_tx_stats.fail_hw_drop++;
|
|
break;
|
|
case TX_STATUS_FAIL_NO_BEACON_ON_RADAR:
|
|
priv->reply_tx_stats.sta_color_mismatch++;
|
|
break;
|
|
default:
|
|
priv->reply_tx_stats.unknown++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void iwlagn_set_tx_status(struct iwl_priv *priv,
|
|
struct ieee80211_tx_info *info,
|
|
struct iwlagn_tx_resp *tx_resp,
|
|
bool is_agg)
|
|
{
|
|
u16 status = le16_to_cpu(tx_resp->status.status);
|
|
|
|
info->status.rates[0].count = tx_resp->failure_frame + 1;
|
|
if (is_agg)
|
|
info->flags &= ~IEEE80211_TX_CTL_AMPDU;
|
|
info->flags |= iwl_tx_status_to_mac80211(status);
|
|
iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
|
|
info);
|
|
if (!iwl_is_tx_success(status))
|
|
iwlagn_count_tx_err_status(priv, status);
|
|
}
|
|
|
|
static void iwl_check_abort_status(struct iwl_priv *priv,
|
|
u8 frame_count, u32 status)
|
|
{
|
|
if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) {
|
|
IWL_ERR(priv, "Tx flush command to flush out all frames\n");
|
|
if (!test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
|
|
queue_work(priv->shrd->workqueue, &priv->tx_flush);
|
|
}
|
|
}
|
|
|
|
int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
|
|
int txq_id = SEQ_TO_QUEUE(sequence);
|
|
int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence);
|
|
struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
|
|
struct ieee80211_hdr *hdr;
|
|
u32 status = le16_to_cpu(tx_resp->status.status);
|
|
u16 ssn = iwlagn_get_scd_ssn(tx_resp);
|
|
int tid;
|
|
int sta_id;
|
|
int freed;
|
|
struct ieee80211_tx_info *info;
|
|
unsigned long flags;
|
|
struct sk_buff_head skbs;
|
|
struct sk_buff *skb;
|
|
struct iwl_rxon_context *ctx;
|
|
bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE);
|
|
|
|
tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >>
|
|
IWLAGN_TX_RES_TID_POS;
|
|
sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >>
|
|
IWLAGN_TX_RES_RA_POS;
|
|
|
|
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
|
|
|
|
if (is_agg)
|
|
iwl_rx_reply_tx_agg(priv, tx_resp);
|
|
|
|
if (tx_resp->frame_count == 1) {
|
|
u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl);
|
|
next_reclaimed = SEQ_TO_SN(next_reclaimed + 0x10);
|
|
|
|
if (is_agg) {
|
|
/* If this is an aggregation queue, we can rely on the
|
|
* ssn since the wifi sequence number corresponds to
|
|
* the index in the TFD ring (%256).
|
|
* The seq_ctl is the sequence control of the packet
|
|
* to which this Tx response relates. But if there is a
|
|
* hole in the bitmap of the BA we received, this Tx
|
|
* response may allow to reclaim the hole and all the
|
|
* subsequent packets that were already acked.
|
|
* In that case, seq_ctl != ssn, and the next packet
|
|
* to be reclaimed will be ssn and not seq_ctl.
|
|
*/
|
|
next_reclaimed = ssn;
|
|
}
|
|
|
|
__skb_queue_head_init(&skbs);
|
|
priv->tid_data[sta_id][tid].next_reclaimed = next_reclaimed;
|
|
|
|
IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d",
|
|
next_reclaimed);
|
|
|
|
/*we can free until ssn % q.n_bd not inclusive */
|
|
WARN_ON(iwl_trans_reclaim(trans(priv), sta_id, tid, txq_id,
|
|
ssn, status, &skbs));
|
|
iwlagn_check_ratid_empty(priv, sta_id, tid);
|
|
freed = 0;
|
|
while (!skb_queue_empty(&skbs)) {
|
|
skb = __skb_dequeue(&skbs);
|
|
hdr = (struct ieee80211_hdr *)skb->data;
|
|
|
|
if (!ieee80211_is_data_qos(hdr->frame_control))
|
|
priv->last_seq_ctl = tx_resp->seq_ctl;
|
|
|
|
info = IEEE80211_SKB_CB(skb);
|
|
ctx = info->driver_data[0];
|
|
kmem_cache_free(priv->tx_cmd_pool,
|
|
(info->driver_data[1]));
|
|
|
|
memset(&info->status, 0, sizeof(info->status));
|
|
|
|
if (status == TX_STATUS_FAIL_PASSIVE_NO_RX &&
|
|
iwl_is_associated_ctx(ctx) && ctx->vif &&
|
|
ctx->vif->type == NL80211_IFTYPE_STATION) {
|
|
ctx->last_tx_rejected = true;
|
|
iwl_trans_stop_queue(trans(priv), txq_id,
|
|
"Tx on passive channel");
|
|
|
|
IWL_DEBUG_TX_REPLY(priv,
|
|
"TXQ %d status %s (0x%08x) "
|
|
"rate_n_flags 0x%x retries %d\n",
|
|
txq_id,
|
|
iwl_get_tx_fail_reason(status),
|
|
status,
|
|
le32_to_cpu(tx_resp->rate_n_flags),
|
|
tx_resp->failure_frame);
|
|
|
|
IWL_DEBUG_TX_REPLY(priv,
|
|
"FrameCnt = %d, idx=%d\n",
|
|
tx_resp->frame_count, cmd_index);
|
|
}
|
|
|
|
/* check if BAR is needed */
|
|
if (is_agg && !iwl_is_tx_success(status))
|
|
info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
|
|
iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb),
|
|
tx_resp, is_agg);
|
|
if (!is_agg)
|
|
iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1);
|
|
|
|
ieee80211_tx_status_irqsafe(priv->hw, skb);
|
|
|
|
freed++;
|
|
}
|
|
|
|
WARN_ON(!is_agg && freed != 1);
|
|
}
|
|
|
|
iwl_check_abort_status(priv, tx_resp->frame_count, status);
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA
|
|
*
|
|
* Handles block-acknowledge notification from device, which reports success
|
|
* of frames sent via aggregation.
|
|
*/
|
|
int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba;
|
|
struct iwl_ht_agg *agg;
|
|
struct sk_buff_head reclaimed_skbs;
|
|
struct ieee80211_tx_info *info;
|
|
struct ieee80211_hdr *hdr;
|
|
struct sk_buff *skb;
|
|
unsigned long flags;
|
|
int sta_id;
|
|
int tid;
|
|
int freed;
|
|
|
|
/* "flow" corresponds to Tx queue */
|
|
u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
|
|
|
|
/* "ssn" is start of block-ack Tx window, corresponds to index
|
|
* (in Tx queue's circular buffer) of first TFD/frame in window */
|
|
u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn);
|
|
|
|
if (scd_flow >= hw_params(priv).max_txq_num) {
|
|
IWL_ERR(priv,
|
|
"BUG_ON scd_flow is bigger than number of queues\n");
|
|
return 0;
|
|
}
|
|
|
|
sta_id = ba_resp->sta_id;
|
|
tid = ba_resp->tid;
|
|
agg = &priv->tid_data[sta_id][tid].agg;
|
|
|
|
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
|
|
|
|
if (unlikely(!agg->wait_for_ba)) {
|
|
if (unlikely(ba_resp->bitmap))
|
|
IWL_ERR(priv, "Received BA when not expected\n");
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
__skb_queue_head_init(&reclaimed_skbs);
|
|
|
|
/* Release all TFDs before the SSN, i.e. all TFDs in front of
|
|
* block-ack window (we assume that they've been successfully
|
|
* transmitted ... if not, it's too late anyway). */
|
|
if (iwl_trans_reclaim(trans(priv), sta_id, tid, scd_flow,
|
|
ba_resp_scd_ssn, 0, &reclaimed_skbs)) {
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, "
|
|
"sta_id = %d\n",
|
|
agg->wait_for_ba,
|
|
(u8 *) &ba_resp->sta_addr_lo32,
|
|
ba_resp->sta_id);
|
|
IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, "
|
|
"scd_flow = %d, scd_ssn = %d\n",
|
|
ba_resp->tid, le16_to_cpu(ba_resp->seq_ctl),
|
|
(unsigned long long)le64_to_cpu(ba_resp->bitmap),
|
|
scd_flow, ba_resp_scd_ssn);
|
|
|
|
/* Mark that the expected block-ack response arrived */
|
|
agg->wait_for_ba = false;
|
|
|
|
/* Sanity check values reported by uCode */
|
|
if (ba_resp->txed_2_done > ba_resp->txed) {
|
|
IWL_DEBUG_TX_REPLY(priv,
|
|
"bogus sent(%d) and ack(%d) count\n",
|
|
ba_resp->txed, ba_resp->txed_2_done);
|
|
/*
|
|
* set txed_2_done = txed,
|
|
* so it won't impact rate scale
|
|
*/
|
|
ba_resp->txed = ba_resp->txed_2_done;
|
|
}
|
|
IWL_DEBUG_HT(priv, "agg frames sent:%d, acked:%d\n",
|
|
ba_resp->txed, ba_resp->txed_2_done);
|
|
|
|
priv->tid_data[sta_id][tid].next_reclaimed = ba_resp_scd_ssn;
|
|
|
|
iwlagn_check_ratid_empty(priv, sta_id, tid);
|
|
freed = 0;
|
|
while (!skb_queue_empty(&reclaimed_skbs)) {
|
|
|
|
skb = __skb_dequeue(&reclaimed_skbs);
|
|
hdr = (struct ieee80211_hdr *)skb->data;
|
|
|
|
if (ieee80211_is_data_qos(hdr->frame_control))
|
|
freed++;
|
|
else
|
|
WARN_ON_ONCE(1);
|
|
|
|
info = IEEE80211_SKB_CB(skb);
|
|
kmem_cache_free(priv->tx_cmd_pool, (info->driver_data[1]));
|
|
|
|
if (freed == 1) {
|
|
/* this is the first skb we deliver in this batch */
|
|
/* put the rate scaling data there */
|
|
info = IEEE80211_SKB_CB(skb);
|
|
memset(&info->status, 0, sizeof(info->status));
|
|
info->flags |= IEEE80211_TX_STAT_ACK;
|
|
info->flags |= IEEE80211_TX_STAT_AMPDU;
|
|
info->status.ampdu_ack_len = ba_resp->txed_2_done;
|
|
info->status.ampdu_len = ba_resp->txed;
|
|
iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags,
|
|
info);
|
|
}
|
|
|
|
ieee80211_tx_status_irqsafe(priv->hw, skb);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
|
|
return 0;
|
|
}
|