1142 lines
35 KiB
C
1142 lines
35 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* This program is free software; you can redistribute it and/or modify it
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* 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 WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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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/etherdevice.h>
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#include <linux/slab.h>
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#include <linux/sched.h>
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#include <net/mac80211.h>
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#include <asm/unaligned.h>
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#include "iwl-eeprom.h"
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#include "iwl-dev.h"
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#include "iwl-core.h"
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#include "iwl-sta.h"
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#include "iwl-io.h"
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#include "iwl-helpers.h"
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#include "iwl-agn-calib.h"
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#include "iwl-agn.h"
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#include "iwl-shared.h"
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const char *get_cmd_string(u8 cmd)
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{
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switch (cmd) {
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IWL_CMD(REPLY_ALIVE);
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IWL_CMD(REPLY_ERROR);
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IWL_CMD(REPLY_RXON);
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IWL_CMD(REPLY_RXON_ASSOC);
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IWL_CMD(REPLY_QOS_PARAM);
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IWL_CMD(REPLY_RXON_TIMING);
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IWL_CMD(REPLY_ADD_STA);
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IWL_CMD(REPLY_REMOVE_STA);
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IWL_CMD(REPLY_REMOVE_ALL_STA);
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IWL_CMD(REPLY_TXFIFO_FLUSH);
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IWL_CMD(REPLY_WEPKEY);
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IWL_CMD(REPLY_TX);
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IWL_CMD(REPLY_LEDS_CMD);
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IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
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IWL_CMD(COEX_PRIORITY_TABLE_CMD);
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IWL_CMD(COEX_MEDIUM_NOTIFICATION);
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IWL_CMD(COEX_EVENT_CMD);
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IWL_CMD(REPLY_QUIET_CMD);
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IWL_CMD(REPLY_CHANNEL_SWITCH);
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IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
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IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
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IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
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IWL_CMD(POWER_TABLE_CMD);
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IWL_CMD(PM_SLEEP_NOTIFICATION);
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IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
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IWL_CMD(REPLY_SCAN_CMD);
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IWL_CMD(REPLY_SCAN_ABORT_CMD);
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IWL_CMD(SCAN_START_NOTIFICATION);
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IWL_CMD(SCAN_RESULTS_NOTIFICATION);
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IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
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IWL_CMD(BEACON_NOTIFICATION);
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IWL_CMD(REPLY_TX_BEACON);
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IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
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IWL_CMD(QUIET_NOTIFICATION);
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IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
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IWL_CMD(MEASURE_ABORT_NOTIFICATION);
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IWL_CMD(REPLY_BT_CONFIG);
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IWL_CMD(REPLY_STATISTICS_CMD);
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IWL_CMD(STATISTICS_NOTIFICATION);
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IWL_CMD(REPLY_CARD_STATE_CMD);
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IWL_CMD(CARD_STATE_NOTIFICATION);
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IWL_CMD(MISSED_BEACONS_NOTIFICATION);
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IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
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IWL_CMD(SENSITIVITY_CMD);
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IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
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IWL_CMD(REPLY_RX_PHY_CMD);
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IWL_CMD(REPLY_RX_MPDU_CMD);
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IWL_CMD(REPLY_RX);
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IWL_CMD(REPLY_COMPRESSED_BA);
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IWL_CMD(CALIBRATION_CFG_CMD);
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IWL_CMD(CALIBRATION_RES_NOTIFICATION);
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IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION);
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IWL_CMD(REPLY_TX_POWER_DBM_CMD);
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IWL_CMD(TEMPERATURE_NOTIFICATION);
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IWL_CMD(TX_ANT_CONFIGURATION_CMD);
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IWL_CMD(REPLY_BT_COEX_PROFILE_NOTIF);
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IWL_CMD(REPLY_BT_COEX_PRIO_TABLE);
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IWL_CMD(REPLY_BT_COEX_PROT_ENV);
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IWL_CMD(REPLY_WIPAN_PARAMS);
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IWL_CMD(REPLY_WIPAN_RXON);
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IWL_CMD(REPLY_WIPAN_RXON_TIMING);
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IWL_CMD(REPLY_WIPAN_RXON_ASSOC);
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IWL_CMD(REPLY_WIPAN_QOS_PARAM);
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IWL_CMD(REPLY_WIPAN_WEPKEY);
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IWL_CMD(REPLY_WIPAN_P2P_CHANNEL_SWITCH);
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IWL_CMD(REPLY_WIPAN_NOA_NOTIFICATION);
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IWL_CMD(REPLY_WIPAN_DEACTIVATION_COMPLETE);
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IWL_CMD(REPLY_WOWLAN_PATTERNS);
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IWL_CMD(REPLY_WOWLAN_WAKEUP_FILTER);
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IWL_CMD(REPLY_WOWLAN_TSC_RSC_PARAMS);
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IWL_CMD(REPLY_WOWLAN_TKIP_PARAMS);
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IWL_CMD(REPLY_WOWLAN_KEK_KCK_MATERIAL);
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IWL_CMD(REPLY_WOWLAN_GET_STATUS);
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default:
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return "UNKNOWN";
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}
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}
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/******************************************************************************
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*
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* Generic RX handler implementations
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*
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******************************************************************************/
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static int iwl_rx_reply_error(struct iwl_priv *priv,
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struct iwl_rx_mem_buffer *rxb,
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struct iwl_device_cmd *cmd)
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{
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
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"seq 0x%04X ser 0x%08X\n",
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le32_to_cpu(pkt->u.err_resp.error_type),
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get_cmd_string(pkt->u.err_resp.cmd_id),
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pkt->u.err_resp.cmd_id,
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le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
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le32_to_cpu(pkt->u.err_resp.error_info));
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return 0;
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}
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static int iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
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struct iwl_device_cmd *cmd)
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{
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
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/*
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* MULTI-FIXME
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* See iwl_mac_channel_switch.
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*/
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struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
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struct iwl_rxon_cmd *rxon = (void *)&ctx->active;
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if (!test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
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return 0;
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if (!le32_to_cpu(csa->status) && csa->channel == priv->switch_channel) {
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rxon->channel = csa->channel;
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ctx->staging.channel = csa->channel;
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IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
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le16_to_cpu(csa->channel));
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iwl_chswitch_done(priv, true);
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} else {
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IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
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le16_to_cpu(csa->channel));
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iwl_chswitch_done(priv, false);
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}
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return 0;
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}
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static int iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
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struct iwl_rx_mem_buffer *rxb,
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struct iwl_device_cmd *cmd)
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{
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
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if (!report->state) {
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IWL_DEBUG_11H(priv,
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"Spectrum Measure Notification: Start\n");
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return 0;
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}
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memcpy(&priv->measure_report, report, sizeof(*report));
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priv->measurement_status |= MEASUREMENT_READY;
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return 0;
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}
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static int iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
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struct iwl_rx_mem_buffer *rxb,
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struct iwl_device_cmd *cmd)
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{
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#ifdef CONFIG_IWLWIFI_DEBUG
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
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IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
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sleep->pm_sleep_mode, sleep->pm_wakeup_src);
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#endif
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return 0;
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}
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static int iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
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struct iwl_rx_mem_buffer *rxb,
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struct iwl_device_cmd *cmd)
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{
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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u32 __maybe_unused len =
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le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
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IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
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"notification for %s:\n", len,
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get_cmd_string(pkt->hdr.cmd));
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iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
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return 0;
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}
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static int iwl_rx_beacon_notif(struct iwl_priv *priv,
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struct iwl_rx_mem_buffer *rxb,
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struct iwl_device_cmd *cmd)
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{
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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struct iwlagn_beacon_notif *beacon = (void *)pkt->u.raw;
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#ifdef CONFIG_IWLWIFI_DEBUG
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u16 status = le16_to_cpu(beacon->beacon_notify_hdr.status.status);
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u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
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IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d "
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"tsf:0x%.8x%.8x rate:%d\n",
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status & TX_STATUS_MSK,
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beacon->beacon_notify_hdr.failure_frame,
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le32_to_cpu(beacon->ibss_mgr_status),
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le32_to_cpu(beacon->high_tsf),
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le32_to_cpu(beacon->low_tsf), rate);
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#endif
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priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
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if (!test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
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queue_work(priv->shrd->workqueue, &priv->beacon_update);
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return 0;
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}
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/* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
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#define ACK_CNT_RATIO (50)
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#define BA_TIMEOUT_CNT (5)
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#define BA_TIMEOUT_MAX (16)
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/**
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* iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
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*
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* When the ACK count ratio is low and aggregated BA timeout retries exceeding
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* the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
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* operation state.
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*/
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static bool iwl_good_ack_health(struct iwl_priv *priv,
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struct statistics_tx *cur)
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{
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int actual_delta, expected_delta, ba_timeout_delta;
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struct statistics_tx *old;
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if (priv->agg_tids_count)
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return true;
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old = &priv->statistics.tx;
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actual_delta = le32_to_cpu(cur->actual_ack_cnt) -
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le32_to_cpu(old->actual_ack_cnt);
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expected_delta = le32_to_cpu(cur->expected_ack_cnt) -
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le32_to_cpu(old->expected_ack_cnt);
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/* Values should not be negative, but we do not trust the firmware */
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if (actual_delta <= 0 || expected_delta <= 0)
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return true;
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ba_timeout_delta = le32_to_cpu(cur->agg.ba_timeout) -
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le32_to_cpu(old->agg.ba_timeout);
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if ((actual_delta * 100 / expected_delta) < ACK_CNT_RATIO &&
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ba_timeout_delta > BA_TIMEOUT_CNT) {
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IWL_DEBUG_RADIO(priv, "deltas: actual %d expected %d ba_timeout %d\n",
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actual_delta, expected_delta, ba_timeout_delta);
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#ifdef CONFIG_IWLWIFI_DEBUGFS
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/*
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* This is ifdef'ed on DEBUGFS because otherwise the
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* statistics aren't available. If DEBUGFS is set but
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* DEBUG is not, these will just compile out.
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*/
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IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta %d\n",
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priv->delta_stats.tx.rx_detected_cnt);
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IWL_DEBUG_RADIO(priv,
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"ack_or_ba_timeout_collision delta %d\n",
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priv->delta_stats.tx.ack_or_ba_timeout_collision);
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#endif
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if (ba_timeout_delta >= BA_TIMEOUT_MAX)
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return false;
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}
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return true;
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}
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/**
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* iwl_good_plcp_health - checks for plcp error.
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*
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* When the plcp error is exceeding the thresholds, reset the radio
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* to improve the throughput.
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*/
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static bool iwl_good_plcp_health(struct iwl_priv *priv,
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struct statistics_rx_phy *cur_ofdm,
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struct statistics_rx_ht_phy *cur_ofdm_ht,
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unsigned int msecs)
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{
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int delta;
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int threshold = priv->cfg->base_params->plcp_delta_threshold;
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if (threshold == IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
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IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
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return true;
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}
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delta = le32_to_cpu(cur_ofdm->plcp_err) -
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le32_to_cpu(priv->statistics.rx_ofdm.plcp_err) +
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le32_to_cpu(cur_ofdm_ht->plcp_err) -
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le32_to_cpu(priv->statistics.rx_ofdm_ht.plcp_err);
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/* Can be negative if firmware reset statistics */
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if (delta <= 0)
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return true;
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if ((delta * 100 / msecs) > threshold) {
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IWL_DEBUG_RADIO(priv,
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"plcp health threshold %u delta %d msecs %u\n",
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threshold, delta, msecs);
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return false;
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}
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return true;
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}
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static void iwl_recover_from_statistics(struct iwl_priv *priv,
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struct statistics_rx_phy *cur_ofdm,
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struct statistics_rx_ht_phy *cur_ofdm_ht,
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struct statistics_tx *tx,
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unsigned long stamp)
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{
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unsigned int msecs;
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if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
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return;
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msecs = jiffies_to_msecs(stamp - priv->rx_statistics_jiffies);
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/* Only gather statistics and update time stamp when not associated */
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if (!iwl_is_any_associated(priv))
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return;
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/* Do not check/recover when do not have enough statistics data */
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if (msecs < 99)
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return;
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if (iwlagn_mod_params.ack_check && !iwl_good_ack_health(priv, tx)) {
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IWL_ERR(priv, "low ack count detected, restart firmware\n");
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if (!iwl_force_reset(priv, IWL_FW_RESET, false))
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return;
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}
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if (iwlagn_mod_params.plcp_check &&
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!iwl_good_plcp_health(priv, cur_ofdm, cur_ofdm_ht, msecs))
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iwl_force_reset(priv, IWL_RF_RESET, false);
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}
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/* Calculate noise level, based on measurements during network silence just
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* before arriving beacon. This measurement can be done only if we know
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* exactly when to expect beacons, therefore only when we're associated. */
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static void iwl_rx_calc_noise(struct iwl_priv *priv)
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{
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struct statistics_rx_non_phy *rx_info;
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int num_active_rx = 0;
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int total_silence = 0;
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int bcn_silence_a, bcn_silence_b, bcn_silence_c;
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int last_rx_noise;
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rx_info = &priv->statistics.rx_non_phy;
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bcn_silence_a =
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le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
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bcn_silence_b =
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le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
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bcn_silence_c =
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le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
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if (bcn_silence_a) {
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total_silence += bcn_silence_a;
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num_active_rx++;
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}
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if (bcn_silence_b) {
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total_silence += bcn_silence_b;
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num_active_rx++;
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}
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if (bcn_silence_c) {
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total_silence += bcn_silence_c;
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num_active_rx++;
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}
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/* Average among active antennas */
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if (num_active_rx)
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last_rx_noise = (total_silence / num_active_rx) - 107;
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else
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last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
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IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",
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bcn_silence_a, bcn_silence_b, bcn_silence_c,
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last_rx_noise);
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}
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#ifdef CONFIG_IWLWIFI_DEBUGFS
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/*
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* based on the assumption of all statistics counter are in DWORD
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* FIXME: This function is for debugging, do not deal with
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* the case of counters roll-over.
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*/
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static void accum_stats(__le32 *prev, __le32 *cur, __le32 *delta,
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__le32 *max_delta, __le32 *accum, int size)
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{
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int i;
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for (i = 0;
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i < size / sizeof(__le32);
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i++, prev++, cur++, delta++, max_delta++, accum++) {
|
|
if (le32_to_cpu(*cur) > le32_to_cpu(*prev)) {
|
|
*delta = cpu_to_le32(
|
|
le32_to_cpu(*cur) - le32_to_cpu(*prev));
|
|
le32_add_cpu(accum, le32_to_cpu(*delta));
|
|
if (le32_to_cpu(*delta) > le32_to_cpu(*max_delta))
|
|
*max_delta = *delta;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
iwl_accumulative_statistics(struct iwl_priv *priv,
|
|
struct statistics_general_common *common,
|
|
struct statistics_rx_non_phy *rx_non_phy,
|
|
struct statistics_rx_phy *rx_ofdm,
|
|
struct statistics_rx_ht_phy *rx_ofdm_ht,
|
|
struct statistics_rx_phy *rx_cck,
|
|
struct statistics_tx *tx,
|
|
struct statistics_bt_activity *bt_activity)
|
|
{
|
|
#define ACCUM(_name) \
|
|
accum_stats((__le32 *)&priv->statistics._name, \
|
|
(__le32 *)_name, \
|
|
(__le32 *)&priv->delta_stats._name, \
|
|
(__le32 *)&priv->max_delta_stats._name, \
|
|
(__le32 *)&priv->accum_stats._name, \
|
|
sizeof(*_name));
|
|
|
|
ACCUM(common);
|
|
ACCUM(rx_non_phy);
|
|
ACCUM(rx_ofdm);
|
|
ACCUM(rx_ofdm_ht);
|
|
ACCUM(rx_cck);
|
|
ACCUM(tx);
|
|
if (bt_activity)
|
|
ACCUM(bt_activity);
|
|
#undef ACCUM
|
|
}
|
|
#else
|
|
static inline void
|
|
iwl_accumulative_statistics(struct iwl_priv *priv,
|
|
struct statistics_general_common *common,
|
|
struct statistics_rx_non_phy *rx_non_phy,
|
|
struct statistics_rx_phy *rx_ofdm,
|
|
struct statistics_rx_ht_phy *rx_ofdm_ht,
|
|
struct statistics_rx_phy *rx_cck,
|
|
struct statistics_tx *tx,
|
|
struct statistics_bt_activity *bt_activity)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static int iwl_rx_statistics(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd)
|
|
{
|
|
unsigned long stamp = jiffies;
|
|
const int reg_recalib_period = 60;
|
|
int change;
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
|
|
__le32 *flag;
|
|
struct statistics_general_common *common;
|
|
struct statistics_rx_non_phy *rx_non_phy;
|
|
struct statistics_rx_phy *rx_ofdm;
|
|
struct statistics_rx_ht_phy *rx_ofdm_ht;
|
|
struct statistics_rx_phy *rx_cck;
|
|
struct statistics_tx *tx;
|
|
struct statistics_bt_activity *bt_activity;
|
|
|
|
len -= sizeof(struct iwl_cmd_header); /* skip header */
|
|
|
|
IWL_DEBUG_RX(priv, "Statistics notification received (%d bytes).\n",
|
|
len);
|
|
|
|
if (len == sizeof(struct iwl_bt_notif_statistics)) {
|
|
struct iwl_bt_notif_statistics *stats;
|
|
stats = &pkt->u.stats_bt;
|
|
flag = &stats->flag;
|
|
common = &stats->general.common;
|
|
rx_non_phy = &stats->rx.general.common;
|
|
rx_ofdm = &stats->rx.ofdm;
|
|
rx_ofdm_ht = &stats->rx.ofdm_ht;
|
|
rx_cck = &stats->rx.cck;
|
|
tx = &stats->tx;
|
|
bt_activity = &stats->general.activity;
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
|
/* handle this exception directly */
|
|
priv->statistics.num_bt_kills = stats->rx.general.num_bt_kills;
|
|
le32_add_cpu(&priv->statistics.accum_num_bt_kills,
|
|
le32_to_cpu(stats->rx.general.num_bt_kills));
|
|
#endif
|
|
} else if (len == sizeof(struct iwl_notif_statistics)) {
|
|
struct iwl_notif_statistics *stats;
|
|
stats = &pkt->u.stats;
|
|
flag = &stats->flag;
|
|
common = &stats->general.common;
|
|
rx_non_phy = &stats->rx.general;
|
|
rx_ofdm = &stats->rx.ofdm;
|
|
rx_ofdm_ht = &stats->rx.ofdm_ht;
|
|
rx_cck = &stats->rx.cck;
|
|
tx = &stats->tx;
|
|
bt_activity = NULL;
|
|
} else {
|
|
WARN_ONCE(1, "len %d doesn't match BT (%zu) or normal (%zu)\n",
|
|
len, sizeof(struct iwl_bt_notif_statistics),
|
|
sizeof(struct iwl_notif_statistics));
|
|
return 0;
|
|
}
|
|
|
|
change = common->temperature != priv->statistics.common.temperature ||
|
|
(*flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
|
|
(priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK);
|
|
|
|
iwl_accumulative_statistics(priv, common, rx_non_phy, rx_ofdm,
|
|
rx_ofdm_ht, rx_cck, tx, bt_activity);
|
|
|
|
iwl_recover_from_statistics(priv, rx_ofdm, rx_ofdm_ht, tx, stamp);
|
|
|
|
priv->statistics.flag = *flag;
|
|
memcpy(&priv->statistics.common, common, sizeof(*common));
|
|
memcpy(&priv->statistics.rx_non_phy, rx_non_phy, sizeof(*rx_non_phy));
|
|
memcpy(&priv->statistics.rx_ofdm, rx_ofdm, sizeof(*rx_ofdm));
|
|
memcpy(&priv->statistics.rx_ofdm_ht, rx_ofdm_ht, sizeof(*rx_ofdm_ht));
|
|
memcpy(&priv->statistics.rx_cck, rx_cck, sizeof(*rx_cck));
|
|
memcpy(&priv->statistics.tx, tx, sizeof(*tx));
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
|
if (bt_activity)
|
|
memcpy(&priv->statistics.bt_activity, bt_activity,
|
|
sizeof(*bt_activity));
|
|
#endif
|
|
|
|
priv->rx_statistics_jiffies = stamp;
|
|
|
|
set_bit(STATUS_STATISTICS, &priv->shrd->status);
|
|
|
|
/* Reschedule the statistics timer to occur in
|
|
* reg_recalib_period seconds to ensure we get a
|
|
* thermal update even if the uCode doesn't give
|
|
* us one */
|
|
mod_timer(&priv->statistics_periodic, jiffies +
|
|
msecs_to_jiffies(reg_recalib_period * 1000));
|
|
|
|
if (unlikely(!test_bit(STATUS_SCANNING, &priv->shrd->status)) &&
|
|
(pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
|
|
iwl_rx_calc_noise(priv);
|
|
queue_work(priv->shrd->workqueue, &priv->run_time_calib_work);
|
|
}
|
|
if (priv->cfg->lib->temperature && change)
|
|
priv->cfg->lib->temperature(priv);
|
|
return 0;
|
|
}
|
|
|
|
static int iwl_rx_reply_statistics(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
|
|
if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
|
memset(&priv->accum_stats, 0,
|
|
sizeof(priv->accum_stats));
|
|
memset(&priv->delta_stats, 0,
|
|
sizeof(priv->delta_stats));
|
|
memset(&priv->max_delta_stats, 0,
|
|
sizeof(priv->max_delta_stats));
|
|
#endif
|
|
IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
|
|
}
|
|
iwl_rx_statistics(priv, rxb, cmd);
|
|
return 0;
|
|
}
|
|
|
|
/* Handle notification from uCode that card's power state is changing
|
|
* due to software, hardware, or critical temperature RFKILL */
|
|
static int iwl_rx_card_state_notif(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
|
|
unsigned long status = priv->shrd->status;
|
|
|
|
IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
|
|
(flags & HW_CARD_DISABLED) ? "Kill" : "On",
|
|
(flags & SW_CARD_DISABLED) ? "Kill" : "On",
|
|
(flags & CT_CARD_DISABLED) ?
|
|
"Reached" : "Not reached");
|
|
|
|
if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
|
|
CT_CARD_DISABLED)) {
|
|
|
|
iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
|
|
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
|
|
|
|
iwl_write_direct32(bus(priv), HBUS_TARG_MBX_C,
|
|
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
|
|
|
|
if (!(flags & RXON_CARD_DISABLED)) {
|
|
iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
|
|
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
|
|
iwl_write_direct32(bus(priv), HBUS_TARG_MBX_C,
|
|
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
|
|
}
|
|
if (flags & CT_CARD_DISABLED)
|
|
iwl_tt_enter_ct_kill(priv);
|
|
}
|
|
if (!(flags & CT_CARD_DISABLED))
|
|
iwl_tt_exit_ct_kill(priv);
|
|
|
|
if (flags & HW_CARD_DISABLED)
|
|
set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
|
|
else
|
|
clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
|
|
|
|
|
|
if (!(flags & RXON_CARD_DISABLED))
|
|
iwl_scan_cancel(priv);
|
|
|
|
if ((test_bit(STATUS_RF_KILL_HW, &status) !=
|
|
test_bit(STATUS_RF_KILL_HW, &priv->shrd->status)))
|
|
wiphy_rfkill_set_hw_state(priv->hw->wiphy,
|
|
test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
|
|
else
|
|
wake_up(&priv->shrd->wait_command_queue);
|
|
return 0;
|
|
}
|
|
|
|
static int iwl_rx_missed_beacon_notif(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_missed_beacon_notif *missed_beacon;
|
|
|
|
missed_beacon = &pkt->u.missed_beacon;
|
|
if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >
|
|
priv->missed_beacon_threshold) {
|
|
IWL_DEBUG_CALIB(priv,
|
|
"missed bcn cnsq %d totl %d rcd %d expctd %d\n",
|
|
le32_to_cpu(missed_beacon->consecutive_missed_beacons),
|
|
le32_to_cpu(missed_beacon->total_missed_becons),
|
|
le32_to_cpu(missed_beacon->num_recvd_beacons),
|
|
le32_to_cpu(missed_beacon->num_expected_beacons));
|
|
if (!test_bit(STATUS_SCANNING, &priv->shrd->status))
|
|
iwl_init_sensitivity(priv);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
|
|
* This will be used later in iwl_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
|
|
static int iwl_rx_reply_rx_phy(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
|
|
priv->last_phy_res_valid = true;
|
|
memcpy(&priv->last_phy_res, pkt->u.raw,
|
|
sizeof(struct iwl_rx_phy_res));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* returns non-zero if packet should be dropped
|
|
*/
|
|
static int iwl_set_decrypted_flag(struct iwl_priv *priv,
|
|
struct ieee80211_hdr *hdr,
|
|
u32 decrypt_res,
|
|
struct ieee80211_rx_status *stats)
|
|
{
|
|
u16 fc = le16_to_cpu(hdr->frame_control);
|
|
|
|
/*
|
|
* All contexts have the same setting here due to it being
|
|
* a module parameter, so OK to check any context.
|
|
*/
|
|
if (priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags &
|
|
RXON_FILTER_DIS_DECRYPT_MSK)
|
|
return 0;
|
|
|
|
if (!(fc & IEEE80211_FCTL_PROTECTED))
|
|
return 0;
|
|
|
|
IWL_DEBUG_RX(priv, "decrypt_res:0x%x\n", decrypt_res);
|
|
switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
|
|
case RX_RES_STATUS_SEC_TYPE_TKIP:
|
|
/* The uCode has got a bad phase 1 Key, pushes the packet.
|
|
* Decryption will be done in SW. */
|
|
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
|
|
RX_RES_STATUS_BAD_KEY_TTAK)
|
|
break;
|
|
|
|
case RX_RES_STATUS_SEC_TYPE_WEP:
|
|
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
|
|
RX_RES_STATUS_BAD_ICV_MIC) {
|
|
/* bad ICV, the packet is destroyed since the
|
|
* decryption is inplace, drop it */
|
|
IWL_DEBUG_RX(priv, "Packet destroyed\n");
|
|
return -1;
|
|
}
|
|
case RX_RES_STATUS_SEC_TYPE_CCMP:
|
|
if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
|
|
RX_RES_STATUS_DECRYPT_OK) {
|
|
IWL_DEBUG_RX(priv, "hw decrypt successfully!!!\n");
|
|
stats->flag |= RX_FLAG_DECRYPTED;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void iwl_pass_packet_to_mac80211(struct iwl_priv *priv,
|
|
struct ieee80211_hdr *hdr,
|
|
u16 len,
|
|
u32 ampdu_status,
|
|
struct iwl_rx_mem_buffer *rxb,
|
|
struct ieee80211_rx_status *stats)
|
|
{
|
|
struct sk_buff *skb;
|
|
__le16 fc = hdr->frame_control;
|
|
struct iwl_rxon_context *ctx;
|
|
|
|
/* We only process data packets if the interface is open */
|
|
if (unlikely(!priv->is_open)) {
|
|
IWL_DEBUG_DROP_LIMIT(priv,
|
|
"Dropping packet while interface is not open.\n");
|
|
return;
|
|
}
|
|
|
|
/* In case of HW accelerated crypto and bad decryption, drop */
|
|
if (!iwlagn_mod_params.sw_crypto &&
|
|
iwl_set_decrypted_flag(priv, hdr, ampdu_status, stats))
|
|
return;
|
|
|
|
skb = dev_alloc_skb(128);
|
|
if (!skb) {
|
|
IWL_ERR(priv, "dev_alloc_skb failed\n");
|
|
return;
|
|
}
|
|
|
|
skb_add_rx_frag(skb, 0, rxb->page, (void *)hdr - rxb_addr(rxb), len);
|
|
|
|
iwl_update_stats(priv, false, fc, len);
|
|
|
|
/*
|
|
* Wake any queues that were stopped due to a passive channel tx
|
|
* failure. This can happen because the regulatory enforcement in
|
|
* the device waits for a beacon before allowing transmission,
|
|
* sometimes even after already having transmitted frames for the
|
|
* association because the new RXON may reset the information.
|
|
*/
|
|
if (unlikely(ieee80211_is_beacon(fc))) {
|
|
for_each_context(priv, ctx) {
|
|
if (!ctx->last_tx_rejected)
|
|
continue;
|
|
if (compare_ether_addr(hdr->addr3,
|
|
ctx->active.bssid_addr))
|
|
continue;
|
|
ctx->last_tx_rejected = false;
|
|
iwl_trans_wake_any_queue(trans(priv), ctx->ctxid);
|
|
}
|
|
}
|
|
|
|
memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
|
|
|
|
ieee80211_rx(priv->hw, skb);
|
|
rxb->page = NULL;
|
|
}
|
|
|
|
static u32 iwl_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
|
|
{
|
|
u32 decrypt_out = 0;
|
|
|
|
if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) ==
|
|
RX_RES_STATUS_STATION_FOUND)
|
|
decrypt_out |= (RX_RES_STATUS_STATION_FOUND |
|
|
RX_RES_STATUS_NO_STATION_INFO_MISMATCH);
|
|
|
|
decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK);
|
|
|
|
/* packet was not encrypted */
|
|
if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
|
|
RX_RES_STATUS_SEC_TYPE_NONE)
|
|
return decrypt_out;
|
|
|
|
/* packet was encrypted with unknown alg */
|
|
if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
|
|
RX_RES_STATUS_SEC_TYPE_ERR)
|
|
return decrypt_out;
|
|
|
|
/* decryption was not done in HW */
|
|
if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) !=
|
|
RX_MPDU_RES_STATUS_DEC_DONE_MSK)
|
|
return decrypt_out;
|
|
|
|
switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) {
|
|
|
|
case RX_RES_STATUS_SEC_TYPE_CCMP:
|
|
/* alg is CCM: check MIC only */
|
|
if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK))
|
|
/* Bad MIC */
|
|
decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
|
|
else
|
|
decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
|
|
|
|
break;
|
|
|
|
case RX_RES_STATUS_SEC_TYPE_TKIP:
|
|
if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) {
|
|
/* Bad TTAK */
|
|
decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK;
|
|
break;
|
|
}
|
|
/* fall through if TTAK OK */
|
|
default:
|
|
if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK))
|
|
decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
|
|
else
|
|
decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
|
|
break;
|
|
}
|
|
|
|
IWL_DEBUG_RX(priv, "decrypt_in:0x%x decrypt_out = 0x%x\n",
|
|
decrypt_in, decrypt_out);
|
|
|
|
return decrypt_out;
|
|
}
|
|
|
|
/* Calc max signal level (dBm) among 3 possible receivers */
|
|
static int iwlagn_calc_rssi(struct iwl_priv *priv,
|
|
struct iwl_rx_phy_res *rx_resp)
|
|
{
|
|
/* data from PHY/DSP regarding signal strength, etc.,
|
|
* contents are always there, not configurable by host
|
|
*/
|
|
struct iwlagn_non_cfg_phy *ncphy =
|
|
(struct iwlagn_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
|
|
u32 val, rssi_a, rssi_b, rssi_c, max_rssi;
|
|
u8 agc;
|
|
|
|
val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_AGC_IDX]);
|
|
agc = (val & IWLAGN_OFDM_AGC_MSK) >> IWLAGN_OFDM_AGC_BIT_POS;
|
|
|
|
/* Find max rssi among 3 possible receivers.
|
|
* These values are measured by the digital signal processor (DSP).
|
|
* They should stay fairly constant even as the signal strength varies,
|
|
* if the radio's automatic gain control (AGC) is working right.
|
|
* AGC value (see below) will provide the "interesting" info.
|
|
*/
|
|
val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_AB_IDX]);
|
|
rssi_a = (val & IWLAGN_OFDM_RSSI_INBAND_A_BITMSK) >>
|
|
IWLAGN_OFDM_RSSI_A_BIT_POS;
|
|
rssi_b = (val & IWLAGN_OFDM_RSSI_INBAND_B_BITMSK) >>
|
|
IWLAGN_OFDM_RSSI_B_BIT_POS;
|
|
val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_C_IDX]);
|
|
rssi_c = (val & IWLAGN_OFDM_RSSI_INBAND_C_BITMSK) >>
|
|
IWLAGN_OFDM_RSSI_C_BIT_POS;
|
|
|
|
max_rssi = max_t(u32, rssi_a, rssi_b);
|
|
max_rssi = max_t(u32, max_rssi, rssi_c);
|
|
|
|
IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
|
|
rssi_a, rssi_b, rssi_c, max_rssi, agc);
|
|
|
|
/* dBm = max_rssi dB - agc dB - constant.
|
|
* Higher AGC (higher radio gain) means lower signal. */
|
|
return max_rssi - agc - IWLAGN_RSSI_OFFSET;
|
|
}
|
|
|
|
/* Called for REPLY_RX (legacy ABG frames), or
|
|
* REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
|
|
static int iwl_rx_reply_rx(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd)
|
|
{
|
|
struct ieee80211_hdr *header;
|
|
struct ieee80211_rx_status rx_status;
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
struct iwl_rx_phy_res *phy_res;
|
|
__le32 rx_pkt_status;
|
|
struct iwl_rx_mpdu_res_start *amsdu;
|
|
u32 len;
|
|
u32 ampdu_status;
|
|
u32 rate_n_flags;
|
|
|
|
/**
|
|
* REPLY_RX and REPLY_RX_MPDU_CMD are handled differently.
|
|
* REPLY_RX: physical layer info is in this buffer
|
|
* REPLY_RX_MPDU_CMD: physical layer info was sent in separate
|
|
* command and cached in priv->last_phy_res
|
|
*
|
|
* Here we set up local variables depending on which command is
|
|
* received.
|
|
*/
|
|
if (pkt->hdr.cmd == REPLY_RX) {
|
|
phy_res = (struct iwl_rx_phy_res *)pkt->u.raw;
|
|
header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*phy_res)
|
|
+ phy_res->cfg_phy_cnt);
|
|
|
|
len = le16_to_cpu(phy_res->byte_count);
|
|
rx_pkt_status = *(__le32 *)(pkt->u.raw + sizeof(*phy_res) +
|
|
phy_res->cfg_phy_cnt + len);
|
|
ampdu_status = le32_to_cpu(rx_pkt_status);
|
|
} else {
|
|
if (!priv->last_phy_res_valid) {
|
|
IWL_ERR(priv, "MPDU frame without cached PHY data\n");
|
|
return 0;
|
|
}
|
|
phy_res = &priv->last_phy_res;
|
|
amsdu = (struct iwl_rx_mpdu_res_start *)pkt->u.raw;
|
|
header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*amsdu));
|
|
len = le16_to_cpu(amsdu->byte_count);
|
|
rx_pkt_status = *(__le32 *)(pkt->u.raw + sizeof(*amsdu) + len);
|
|
ampdu_status = iwl_translate_rx_status(priv,
|
|
le32_to_cpu(rx_pkt_status));
|
|
}
|
|
|
|
if ((unlikely(phy_res->cfg_phy_cnt > 20))) {
|
|
IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
|
|
phy_res->cfg_phy_cnt);
|
|
return 0;
|
|
}
|
|
|
|
if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) ||
|
|
!(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
|
|
IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n",
|
|
le32_to_cpu(rx_pkt_status));
|
|
return 0;
|
|
}
|
|
|
|
/* This will be used in several places later */
|
|
rate_n_flags = le32_to_cpu(phy_res->rate_n_flags);
|
|
|
|
/* rx_status carries information about the packet to mac80211 */
|
|
rx_status.mactime = le64_to_cpu(phy_res->timestamp);
|
|
rx_status.band = (phy_res->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
|
|
IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
|
|
rx_status.freq =
|
|
ieee80211_channel_to_frequency(le16_to_cpu(phy_res->channel),
|
|
rx_status.band);
|
|
rx_status.rate_idx =
|
|
iwlagn_hwrate_to_mac80211_idx(rate_n_flags, rx_status.band);
|
|
rx_status.flag = 0;
|
|
|
|
/* TSF isn't reliable. In order to allow smooth user experience,
|
|
* this W/A doesn't propagate it to the mac80211 */
|
|
/*rx_status.flag |= RX_FLAG_MACTIME_MPDU;*/
|
|
|
|
priv->ucode_beacon_time = le32_to_cpu(phy_res->beacon_time_stamp);
|
|
|
|
/* Find max signal strength (dBm) among 3 antenna/receiver chains */
|
|
rx_status.signal = iwlagn_calc_rssi(priv, phy_res);
|
|
|
|
iwl_dbg_log_rx_data_frame(priv, len, header);
|
|
IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, TSF %llu\n",
|
|
rx_status.signal, (unsigned long long)rx_status.mactime);
|
|
|
|
/*
|
|
* "antenna number"
|
|
*
|
|
* It seems that the antenna field in the phy flags value
|
|
* is actually a bit field. This is undefined by radiotap,
|
|
* it wants an actual antenna number but I always get "7"
|
|
* for most legacy frames I receive indicating that the
|
|
* same frame was received on all three RX chains.
|
|
*
|
|
* I think this field should be removed in favor of a
|
|
* new 802.11n radiotap field "RX chains" that is defined
|
|
* as a bitmask.
|
|
*/
|
|
rx_status.antenna =
|
|
(le16_to_cpu(phy_res->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK)
|
|
>> RX_RES_PHY_FLAGS_ANTENNA_POS;
|
|
|
|
/* set the preamble flag if appropriate */
|
|
if (phy_res->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
|
|
rx_status.flag |= RX_FLAG_SHORTPRE;
|
|
|
|
/* Set up the HT phy flags */
|
|
if (rate_n_flags & RATE_MCS_HT_MSK)
|
|
rx_status.flag |= RX_FLAG_HT;
|
|
if (rate_n_flags & RATE_MCS_HT40_MSK)
|
|
rx_status.flag |= RX_FLAG_40MHZ;
|
|
if (rate_n_flags & RATE_MCS_SGI_MSK)
|
|
rx_status.flag |= RX_FLAG_SHORT_GI;
|
|
|
|
iwl_pass_packet_to_mac80211(priv, header, len, ampdu_status,
|
|
rxb, &rx_status);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl_setup_rx_handlers - Initialize Rx handler callbacks
|
|
*
|
|
* Setup the RX handlers for each of the reply types sent from the uCode
|
|
* to the host.
|
|
*/
|
|
void iwl_setup_rx_handlers(struct iwl_priv *priv)
|
|
{
|
|
int (**handlers)(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd);
|
|
|
|
handlers = priv->rx_handlers;
|
|
|
|
handlers[REPLY_ERROR] = iwl_rx_reply_error;
|
|
handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
|
|
handlers[SPECTRUM_MEASURE_NOTIFICATION] = iwl_rx_spectrum_measure_notif;
|
|
handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
|
|
handlers[PM_DEBUG_STATISTIC_NOTIFIC] = iwl_rx_pm_debug_statistics_notif;
|
|
handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
|
|
handlers[REPLY_ADD_STA] = iwl_add_sta_callback;
|
|
|
|
/*
|
|
* The same handler is used for both the REPLY to a discrete
|
|
* statistics request from the host as well as for the periodic
|
|
* statistics notifications (after received beacons) from the uCode.
|
|
*/
|
|
handlers[REPLY_STATISTICS_CMD] = iwl_rx_reply_statistics;
|
|
handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
|
|
|
|
iwl_setup_rx_scan_handlers(priv);
|
|
|
|
handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
|
|
handlers[MISSED_BEACONS_NOTIFICATION] = iwl_rx_missed_beacon_notif;
|
|
|
|
/* Rx handlers */
|
|
handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
|
|
handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
|
|
|
|
/* block ack */
|
|
handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
|
|
|
|
/* init calibration handlers */
|
|
priv->rx_handlers[CALIBRATION_RES_NOTIFICATION] =
|
|
iwlagn_rx_calib_result;
|
|
priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx;
|
|
|
|
/* set up notification wait support */
|
|
spin_lock_init(&priv->notif_wait_lock);
|
|
INIT_LIST_HEAD(&priv->notif_waits);
|
|
init_waitqueue_head(&priv->notif_waitq);
|
|
|
|
/* Set up BT Rx handlers */
|
|
if (priv->cfg->lib->bt_rx_handler_setup)
|
|
priv->cfg->lib->bt_rx_handler_setup(priv);
|
|
|
|
}
|
|
|
|
int iwl_rx_dispatch(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
|
|
struct iwl_device_cmd *cmd)
|
|
{
|
|
struct iwl_rx_packet *pkt = rxb_addr(rxb);
|
|
int err = 0;
|
|
|
|
/*
|
|
* Do the notification wait before RX handlers so
|
|
* even if the RX handler consumes the RXB we have
|
|
* access to it in the notification wait entry.
|
|
*/
|
|
if (!list_empty(&priv->notif_waits)) {
|
|
struct iwl_notification_wait *w;
|
|
|
|
spin_lock(&priv->notif_wait_lock);
|
|
list_for_each_entry(w, &priv->notif_waits, list) {
|
|
if (w->cmd != pkt->hdr.cmd)
|
|
continue;
|
|
IWL_DEBUG_RX(priv,
|
|
"Notif: %s, 0x%02x - wake the callers up\n",
|
|
get_cmd_string(pkt->hdr.cmd),
|
|
pkt->hdr.cmd);
|
|
w->triggered = true;
|
|
if (w->fn)
|
|
w->fn(priv, pkt, w->fn_data);
|
|
}
|
|
spin_unlock(&priv->notif_wait_lock);
|
|
|
|
wake_up_all(&priv->notif_waitq);
|
|
}
|
|
|
|
if (priv->pre_rx_handler)
|
|
priv->pre_rx_handler(priv, rxb);
|
|
|
|
/* Based on type of command response or notification,
|
|
* handle those that need handling via function in
|
|
* rx_handlers table. See iwl_setup_rx_handlers() */
|
|
if (priv->rx_handlers[pkt->hdr.cmd]) {
|
|
priv->rx_handlers_stats[pkt->hdr.cmd]++;
|
|
err = priv->rx_handlers[pkt->hdr.cmd] (priv, rxb, cmd);
|
|
} else {
|
|
/* No handling needed */
|
|
IWL_DEBUG_RX(priv,
|
|
"No handler needed for %s, 0x%02x\n",
|
|
get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
|
|
}
|
|
return err;
|
|
}
|