+++ /dev/null
-/******************************************************************************
- *
- * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2015 Intel Deutschland GmbH
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-
-#include <linux/etherdevice.h>
-#include "iwl-trans.h"
-#include "iwl-modparams.h"
-#include "dev.h"
-#include "agn.h"
-#include "calib.h"
-
-/*
- * initialize rxon structure with default values from eeprom
- */
-void iwl_connection_init_rx_config(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- memset(&ctx->staging, 0, sizeof(ctx->staging));
-
- if (!ctx->vif) {
- ctx->staging.dev_type = ctx->unused_devtype;
- } else
- switch (ctx->vif->type) {
- case NL80211_IFTYPE_AP:
- ctx->staging.dev_type = ctx->ap_devtype;
- break;
-
- case NL80211_IFTYPE_STATION:
- ctx->staging.dev_type = ctx->station_devtype;
- ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
- break;
-
- case NL80211_IFTYPE_ADHOC:
- ctx->staging.dev_type = ctx->ibss_devtype;
- ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
- ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
- RXON_FILTER_ACCEPT_GRP_MSK;
- break;
-
- case NL80211_IFTYPE_MONITOR:
- ctx->staging.dev_type = RXON_DEV_TYPE_SNIFFER;
- break;
-
- default:
- IWL_ERR(priv, "Unsupported interface type %d\n",
- ctx->vif->type);
- break;
- }
-
-#if 0
- /* TODO: Figure out when short_preamble would be set and cache from
- * that */
- if (!hw_to_local(priv->hw)->short_preamble)
- ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
- else
- ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
-#endif
-
- ctx->staging.channel =
- cpu_to_le16(priv->hw->conf.chandef.chan->hw_value);
- priv->band = priv->hw->conf.chandef.chan->band;
-
- iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif);
-
- /* clear both MIX and PURE40 mode flag */
- ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
- RXON_FLG_CHANNEL_MODE_PURE_40);
- if (ctx->vif)
- memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
-
- ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
- ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
- ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff;
-}
-
-static int iwlagn_disable_bss(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct iwl_rxon_cmd *send)
-{
- __le32 old_filter = send->filter_flags;
- int ret;
-
- send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd,
- 0, sizeof(*send), send);
-
- send->filter_flags = old_filter;
-
- if (ret)
- IWL_DEBUG_QUIET_RFKILL(priv,
- "Error clearing ASSOC_MSK on BSS (%d)\n", ret);
-
- return ret;
-}
-
-static int iwlagn_disable_pan(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct iwl_rxon_cmd *send)
-{
- struct iwl_notification_wait disable_wait;
- __le32 old_filter = send->filter_flags;
- u8 old_dev_type = send->dev_type;
- int ret;
- static const u16 deactivate_cmd[] = {
- REPLY_WIPAN_DEACTIVATION_COMPLETE
- };
-
- iwl_init_notification_wait(&priv->notif_wait, &disable_wait,
- deactivate_cmd, ARRAY_SIZE(deactivate_cmd),
- NULL, NULL);
-
- send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- send->dev_type = RXON_DEV_TYPE_P2P;
- ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd,
- 0, sizeof(*send), send);
-
- send->filter_flags = old_filter;
- send->dev_type = old_dev_type;
-
- if (ret) {
- IWL_ERR(priv, "Error disabling PAN (%d)\n", ret);
- iwl_remove_notification(&priv->notif_wait, &disable_wait);
- } else {
- ret = iwl_wait_notification(&priv->notif_wait,
- &disable_wait, HZ);
- if (ret)
- IWL_ERR(priv, "Timed out waiting for PAN disable\n");
- }
-
- return ret;
-}
-
-static int iwlagn_disconn_pan(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct iwl_rxon_cmd *send)
-{
- __le32 old_filter = send->filter_flags;
- int ret;
-
- send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, 0,
- sizeof(*send), send);
-
- send->filter_flags = old_filter;
-
- return ret;
-}
-
-static void iwlagn_update_qos(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- int ret;
-
- if (!ctx->is_active)
- return;
-
- ctx->qos_data.def_qos_parm.qos_flags = 0;
-
- if (ctx->qos_data.qos_active)
- ctx->qos_data.def_qos_parm.qos_flags |=
- QOS_PARAM_FLG_UPDATE_EDCA_MSK;
-
- if (ctx->ht.enabled)
- ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
-
- IWL_DEBUG_INFO(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
- ctx->qos_data.qos_active,
- ctx->qos_data.def_qos_parm.qos_flags);
-
- ret = iwl_dvm_send_cmd_pdu(priv, ctx->qos_cmd, 0,
- sizeof(struct iwl_qosparam_cmd),
- &ctx->qos_data.def_qos_parm);
- if (ret)
- IWL_DEBUG_QUIET_RFKILL(priv, "Failed to update QoS\n");
-}
-
-static int iwlagn_update_beacon(struct iwl_priv *priv,
- struct ieee80211_vif *vif)
-{
- lockdep_assert_held(&priv->mutex);
-
- dev_kfree_skb(priv->beacon_skb);
- priv->beacon_skb = ieee80211_beacon_get(priv->hw, vif);
- if (!priv->beacon_skb)
- return -ENOMEM;
- return iwlagn_send_beacon_cmd(priv);
-}
-
-static int iwlagn_send_rxon_assoc(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- int ret = 0;
- struct iwl_rxon_assoc_cmd rxon_assoc;
- const struct iwl_rxon_cmd *rxon1 = &ctx->staging;
- const struct iwl_rxon_cmd *rxon2 = &ctx->active;
-
- if ((rxon1->flags == rxon2->flags) &&
- (rxon1->filter_flags == rxon2->filter_flags) &&
- (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
- (rxon1->ofdm_ht_single_stream_basic_rates ==
- rxon2->ofdm_ht_single_stream_basic_rates) &&
- (rxon1->ofdm_ht_dual_stream_basic_rates ==
- rxon2->ofdm_ht_dual_stream_basic_rates) &&
- (rxon1->ofdm_ht_triple_stream_basic_rates ==
- rxon2->ofdm_ht_triple_stream_basic_rates) &&
- (rxon1->acquisition_data == rxon2->acquisition_data) &&
- (rxon1->rx_chain == rxon2->rx_chain) &&
- (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
- IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
- return 0;
- }
-
- rxon_assoc.flags = ctx->staging.flags;
- rxon_assoc.filter_flags = ctx->staging.filter_flags;
- rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
- rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
- rxon_assoc.reserved1 = 0;
- rxon_assoc.reserved2 = 0;
- rxon_assoc.reserved3 = 0;
- rxon_assoc.ofdm_ht_single_stream_basic_rates =
- ctx->staging.ofdm_ht_single_stream_basic_rates;
- rxon_assoc.ofdm_ht_dual_stream_basic_rates =
- ctx->staging.ofdm_ht_dual_stream_basic_rates;
- rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain;
- rxon_assoc.ofdm_ht_triple_stream_basic_rates =
- ctx->staging.ofdm_ht_triple_stream_basic_rates;
- rxon_assoc.acquisition_data = ctx->staging.acquisition_data;
-
- ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_assoc_cmd,
- CMD_ASYNC, sizeof(rxon_assoc), &rxon_assoc);
- return ret;
-}
-
-static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
-{
- u16 new_val;
- u16 beacon_factor;
-
- /*
- * If mac80211 hasn't given us a beacon interval, program
- * the default into the device (not checking this here
- * would cause the adjustment below to return the maximum
- * value, which may break PAN.)
- */
- if (!beacon_val)
- return DEFAULT_BEACON_INTERVAL;
-
- /*
- * If the beacon interval we obtained from the peer
- * is too large, we'll have to wake up more often
- * (and in IBSS case, we'll beacon too much)
- *
- * For example, if max_beacon_val is 4096, and the
- * requested beacon interval is 7000, we'll have to
- * use 3500 to be able to wake up on the beacons.
- *
- * This could badly influence beacon detection stats.
- */
-
- beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
- new_val = beacon_val / beacon_factor;
-
- if (!new_val)
- new_val = max_beacon_val;
-
- return new_val;
-}
-
-static int iwl_send_rxon_timing(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- u64 tsf;
- s32 interval_tm, rem;
- struct ieee80211_conf *conf = NULL;
- u16 beacon_int;
- struct ieee80211_vif *vif = ctx->vif;
-
- conf = &priv->hw->conf;
-
- lockdep_assert_held(&priv->mutex);
-
- memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd));
-
- ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
- ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
-
- beacon_int = vif ? vif->bss_conf.beacon_int : 0;
-
- /*
- * TODO: For IBSS we need to get atim_window from mac80211,
- * for now just always use 0
- */
- ctx->timing.atim_window = 0;
-
- if (ctx->ctxid == IWL_RXON_CTX_PAN &&
- (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) &&
- iwl_is_associated(priv, IWL_RXON_CTX_BSS) &&
- priv->contexts[IWL_RXON_CTX_BSS].vif &&
- priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) {
- ctx->timing.beacon_interval =
- priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval;
- beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
- } else if (ctx->ctxid == IWL_RXON_CTX_BSS &&
- iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
- priv->contexts[IWL_RXON_CTX_PAN].vif &&
- priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int &&
- (!iwl_is_associated_ctx(ctx) || !ctx->vif ||
- !ctx->vif->bss_conf.beacon_int)) {
- ctx->timing.beacon_interval =
- priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval;
- beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
- } else {
- beacon_int = iwl_adjust_beacon_interval(beacon_int,
- IWL_MAX_UCODE_BEACON_INTERVAL * TIME_UNIT);
- ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
- }
-
- ctx->beacon_int = beacon_int;
-
- tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
- interval_tm = beacon_int * TIME_UNIT;
- rem = do_div(tsf, interval_tm);
- ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
-
- ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
-
- IWL_DEBUG_ASSOC(priv,
- "beacon interval %d beacon timer %d beacon tim %d\n",
- le16_to_cpu(ctx->timing.beacon_interval),
- le32_to_cpu(ctx->timing.beacon_init_val),
- le16_to_cpu(ctx->timing.atim_window));
-
- return iwl_dvm_send_cmd_pdu(priv, ctx->rxon_timing_cmd,
- 0, sizeof(ctx->timing), &ctx->timing);
-}
-
-static int iwlagn_rxon_disconn(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- int ret;
- struct iwl_rxon_cmd *active = (void *)&ctx->active;
-
- if (ctx->ctxid == IWL_RXON_CTX_BSS) {
- ret = iwlagn_disable_bss(priv, ctx, &ctx->staging);
- } else {
- ret = iwlagn_disable_pan(priv, ctx, &ctx->staging);
- if (ret)
- return ret;
- if (ctx->vif) {
- ret = iwl_send_rxon_timing(priv, ctx);
- if (ret) {
- IWL_ERR(priv, "Failed to send timing (%d)!\n", ret);
- return ret;
- }
- ret = iwlagn_disconn_pan(priv, ctx, &ctx->staging);
- }
- }
- if (ret)
- return ret;
-
- /*
- * Un-assoc RXON clears the station table and WEP
- * keys, so we have to restore those afterwards.
- */
- iwl_clear_ucode_stations(priv, ctx);
- /* update -- might need P2P now */
- iwl_update_bcast_station(priv, ctx);
- iwl_restore_stations(priv, ctx);
- ret = iwl_restore_default_wep_keys(priv, ctx);
- if (ret) {
- IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
- return ret;
- }
-
- memcpy(active, &ctx->staging, sizeof(*active));
- return 0;
-}
-
-static int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
-{
- int ret;
- s8 prev_tx_power;
- bool defer;
- struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
-
- if (priv->calib_disabled & IWL_TX_POWER_CALIB_DISABLED)
- return 0;
-
- lockdep_assert_held(&priv->mutex);
-
- if (priv->tx_power_user_lmt == tx_power && !force)
- return 0;
-
- if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
- IWL_WARN(priv,
- "Requested user TXPOWER %d below lower limit %d.\n",
- tx_power,
- IWLAGN_TX_POWER_TARGET_POWER_MIN);
- return -EINVAL;
- }
-
- if (tx_power > DIV_ROUND_UP(priv->nvm_data->max_tx_pwr_half_dbm, 2)) {
- IWL_WARN(priv,
- "Requested user TXPOWER %d above upper limit %d.\n",
- tx_power, priv->nvm_data->max_tx_pwr_half_dbm);
- return -EINVAL;
- }
-
- if (!iwl_is_ready_rf(priv))
- return -EIO;
-
- /* scan complete and commit_rxon use tx_power_next value,
- * it always need to be updated for newest request */
- priv->tx_power_next = tx_power;
-
- /* do not set tx power when scanning or channel changing */
- defer = test_bit(STATUS_SCANNING, &priv->status) ||
- memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
- if (defer && !force) {
- IWL_DEBUG_INFO(priv, "Deferring tx power set\n");
- return 0;
- }
-
- prev_tx_power = priv->tx_power_user_lmt;
- priv->tx_power_user_lmt = tx_power;
-
- ret = iwlagn_send_tx_power(priv);
-
- /* if fail to set tx_power, restore the orig. tx power */
- if (ret) {
- priv->tx_power_user_lmt = prev_tx_power;
- priv->tx_power_next = prev_tx_power;
- }
- return ret;
-}
-
-static int iwlagn_rxon_connect(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- int ret;
- struct iwl_rxon_cmd *active = (void *)&ctx->active;
-
- /* RXON timing must be before associated RXON */
- if (ctx->ctxid == IWL_RXON_CTX_BSS) {
- ret = iwl_send_rxon_timing(priv, ctx);
- if (ret) {
- IWL_ERR(priv, "Failed to send timing (%d)!\n", ret);
- return ret;
- }
- }
- /* QoS info may be cleared by previous un-assoc RXON */
- iwlagn_update_qos(priv, ctx);
-
- /*
- * We'll run into this code path when beaconing is
- * enabled, but then we also need to send the beacon
- * to the device.
- */
- if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_AP)) {
- ret = iwlagn_update_beacon(priv, ctx->vif);
- if (ret) {
- IWL_ERR(priv,
- "Error sending required beacon (%d)!\n",
- ret);
- return ret;
- }
- }
-
- priv->start_calib = 0;
- /*
- * Apply the new configuration.
- *
- * Associated RXON doesn't clear the station table in uCode,
- * so we don't need to restore stations etc. after this.
- */
- ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, 0,
- sizeof(struct iwl_rxon_cmd), &ctx->staging);
- if (ret) {
- IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
- return ret;
- }
- memcpy(active, &ctx->staging, sizeof(*active));
-
- /* IBSS beacon needs to be sent after setting assoc */
- if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_ADHOC))
- if (iwlagn_update_beacon(priv, ctx->vif))
- IWL_ERR(priv, "Error sending IBSS beacon\n");
- iwl_init_sensitivity(priv);
-
- /*
- * If we issue a new RXON command which required a tune then
- * we must send a new TXPOWER command or we won't be able to
- * Tx any frames.
- *
- * It's expected we set power here if channel is changing.
- */
- ret = iwl_set_tx_power(priv, priv->tx_power_next, true);
- if (ret) {
- IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
- return ret;
- }
-
- if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
- priv->cfg->ht_params && priv->cfg->ht_params->smps_mode)
- ieee80211_request_smps(ctx->vif,
- priv->cfg->ht_params->smps_mode);
-
- return 0;
-}
-
-int iwlagn_set_pan_params(struct iwl_priv *priv)
-{
- struct iwl_wipan_params_cmd cmd;
- struct iwl_rxon_context *ctx_bss, *ctx_pan;
- int slot0 = 300, slot1 = 0;
- int ret;
-
- if (priv->valid_contexts == BIT(IWL_RXON_CTX_BSS))
- return 0;
-
- BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
-
- lockdep_assert_held(&priv->mutex);
-
- ctx_bss = &priv->contexts[IWL_RXON_CTX_BSS];
- ctx_pan = &priv->contexts[IWL_RXON_CTX_PAN];
-
- /*
- * If the PAN context is inactive, then we don't need
- * to update the PAN parameters, the last thing we'll
- * have done before it goes inactive is making the PAN
- * parameters be WLAN-only.
- */
- if (!ctx_pan->is_active)
- return 0;
-
- memset(&cmd, 0, sizeof(cmd));
-
- /* only 2 slots are currently allowed */
- cmd.num_slots = 2;
-
- cmd.slots[0].type = 0; /* BSS */
- cmd.slots[1].type = 1; /* PAN */
-
- if (ctx_bss->vif && ctx_pan->vif) {
- int bcnint = ctx_pan->beacon_int;
- int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1;
-
- /* should be set, but seems unused?? */
- cmd.flags |= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE);
-
- if (ctx_pan->vif->type == NL80211_IFTYPE_AP &&
- bcnint &&
- bcnint != ctx_bss->beacon_int) {
- IWL_ERR(priv,
- "beacon intervals don't match (%d, %d)\n",
- ctx_bss->beacon_int, ctx_pan->beacon_int);
- } else
- bcnint = max_t(int, bcnint,
- ctx_bss->beacon_int);
- if (!bcnint)
- bcnint = DEFAULT_BEACON_INTERVAL;
- slot0 = bcnint / 2;
- slot1 = bcnint - slot0;
-
- if (test_bit(STATUS_SCAN_HW, &priv->status) ||
- (!ctx_bss->vif->bss_conf.idle &&
- !ctx_bss->vif->bss_conf.assoc)) {
- slot0 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
- slot1 = IWL_MIN_SLOT_TIME;
- } else if (!ctx_pan->vif->bss_conf.idle &&
- !ctx_pan->vif->bss_conf.assoc) {
- slot1 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
- slot0 = IWL_MIN_SLOT_TIME;
- }
- } else if (ctx_pan->vif) {
- slot0 = 0;
- slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) *
- ctx_pan->beacon_int;
- slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1);
-
- if (test_bit(STATUS_SCAN_HW, &priv->status)) {
- slot0 = slot1 * 3 - IWL_MIN_SLOT_TIME;
- slot1 = IWL_MIN_SLOT_TIME;
- }
- }
-
- cmd.slots[0].width = cpu_to_le16(slot0);
- cmd.slots[1].width = cpu_to_le16(slot1);
-
- ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WIPAN_PARAMS, 0,
- sizeof(cmd), &cmd);
- if (ret)
- IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret);
-
- return ret;
-}
-
-static void _iwl_set_rxon_ht(struct iwl_priv *priv,
- struct iwl_ht_config *ht_conf,
- struct iwl_rxon_context *ctx)
-{
- struct iwl_rxon_cmd *rxon = &ctx->staging;
-
- if (!ctx->ht.enabled) {
- rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
- RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
- RXON_FLG_HT40_PROT_MSK |
- RXON_FLG_HT_PROT_MSK);
- return;
- }
-
- /* FIXME: if the definition of ht.protection changed, the "translation"
- * will be needed for rxon->flags
- */
- rxon->flags |= cpu_to_le32(ctx->ht.protection <<
- RXON_FLG_HT_OPERATING_MODE_POS);
-
- /* Set up channel bandwidth:
- * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
- /* clear the HT channel mode before set the mode */
- rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
- RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
- if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) {
- /* pure ht40 */
- if (ctx->ht.protection ==
- IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
- rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
- /*
- * Note: control channel is opposite of extension
- * channel
- */
- switch (ctx->ht.extension_chan_offset) {
- case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
- rxon->flags &=
- ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
- break;
- case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
- rxon->flags |=
- RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
- break;
- }
- } else {
- /*
- * Note: control channel is opposite of extension
- * channel
- */
- switch (ctx->ht.extension_chan_offset) {
- case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
- rxon->flags &=
- ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
- rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
- break;
- case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
- rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
- rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
- break;
- case IEEE80211_HT_PARAM_CHA_SEC_NONE:
- default:
- /*
- * channel location only valid if in Mixed
- * mode
- */
- IWL_ERR(priv,
- "invalid extension channel offset\n");
- break;
- }
- }
- } else {
- rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
- }
-
- iwlagn_set_rxon_chain(priv, ctx);
-
- IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
- "extension channel offset 0x%x\n",
- le32_to_cpu(rxon->flags), ctx->ht.protection,
- ctx->ht.extension_chan_offset);
-}
-
-void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
-{
- struct iwl_rxon_context *ctx;
-
- for_each_context(priv, ctx)
- _iwl_set_rxon_ht(priv, ht_conf, ctx);
-}
-
-/**
- * iwl_set_rxon_channel - Set the band and channel values in staging RXON
- * @ch: requested channel as a pointer to struct ieee80211_channel
-
- * NOTE: Does not commit to the hardware; it sets appropriate bit fields
- * in the staging RXON flag structure based on the ch->band
- */
-void iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
- struct iwl_rxon_context *ctx)
-{
- enum ieee80211_band band = ch->band;
- u16 channel = ch->hw_value;
-
- if ((le16_to_cpu(ctx->staging.channel) == channel) &&
- (priv->band == band))
- return;
-
- ctx->staging.channel = cpu_to_le16(channel);
- if (band == IEEE80211_BAND_5GHZ)
- ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
- else
- ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
-
- priv->band = band;
-
- IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
-
-}
-
-void iwl_set_flags_for_band(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- enum ieee80211_band band,
- struct ieee80211_vif *vif)
-{
- if (band == IEEE80211_BAND_5GHZ) {
- ctx->staging.flags &=
- ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
- | RXON_FLG_CCK_MSK);
- ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
- } else {
- /* Copied from iwl_post_associate() */
- if (vif && vif->bss_conf.use_short_slot)
- ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
- else
- ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
-
- ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
- ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
- ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
- }
-}
-
-static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx, int hw_decrypt)
-{
- struct iwl_rxon_cmd *rxon = &ctx->staging;
-
- if (hw_decrypt)
- rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
- else
- rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
-
-}
-
-/* validate RXON structure is valid */
-static int iwl_check_rxon_cmd(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- struct iwl_rxon_cmd *rxon = &ctx->staging;
- u32 errors = 0;
-
- if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
- if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
- IWL_WARN(priv, "check 2.4G: wrong narrow\n");
- errors |= BIT(0);
- }
- if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
- IWL_WARN(priv, "check 2.4G: wrong radar\n");
- errors |= BIT(1);
- }
- } else {
- if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
- IWL_WARN(priv, "check 5.2G: not short slot!\n");
- errors |= BIT(2);
- }
- if (rxon->flags & RXON_FLG_CCK_MSK) {
- IWL_WARN(priv, "check 5.2G: CCK!\n");
- errors |= BIT(3);
- }
- }
- if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
- IWL_WARN(priv, "mac/bssid mcast!\n");
- errors |= BIT(4);
- }
-
- /* make sure basic rates 6Mbps and 1Mbps are supported */
- if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 &&
- (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) {
- IWL_WARN(priv, "neither 1 nor 6 are basic\n");
- errors |= BIT(5);
- }
-
- if (le16_to_cpu(rxon->assoc_id) > 2007) {
- IWL_WARN(priv, "aid > 2007\n");
- errors |= BIT(6);
- }
-
- if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
- == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
- IWL_WARN(priv, "CCK and short slot\n");
- errors |= BIT(7);
- }
-
- if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
- == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
- IWL_WARN(priv, "CCK and auto detect\n");
- errors |= BIT(8);
- }
-
- if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
- RXON_FLG_TGG_PROTECT_MSK)) ==
- RXON_FLG_TGG_PROTECT_MSK) {
- IWL_WARN(priv, "TGg but no auto-detect\n");
- errors |= BIT(9);
- }
-
- if (rxon->channel == 0) {
- IWL_WARN(priv, "zero channel is invalid\n");
- errors |= BIT(10);
- }
-
- WARN(errors, "Invalid RXON (%#x), channel %d",
- errors, le16_to_cpu(rxon->channel));
-
- return errors ? -EINVAL : 0;
-}
-
-/**
- * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
- * @priv: staging_rxon is compared to active_rxon
- *
- * If the RXON structure is changing enough to require a new tune,
- * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
- * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
- */
-static int iwl_full_rxon_required(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- const struct iwl_rxon_cmd *staging = &ctx->staging;
- const struct iwl_rxon_cmd *active = &ctx->active;
-
-#define CHK(cond) \
- if ((cond)) { \
- IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
- return 1; \
- }
-
-#define CHK_NEQ(c1, c2) \
- if ((c1) != (c2)) { \
- IWL_DEBUG_INFO(priv, "need full RXON - " \
- #c1 " != " #c2 " - %d != %d\n", \
- (c1), (c2)); \
- return 1; \
- }
-
- /* These items are only settable from the full RXON command */
- CHK(!iwl_is_associated_ctx(ctx));
- CHK(!ether_addr_equal(staging->bssid_addr, active->bssid_addr));
- CHK(!ether_addr_equal(staging->node_addr, active->node_addr));
- CHK(!ether_addr_equal(staging->wlap_bssid_addr,
- active->wlap_bssid_addr));
- CHK_NEQ(staging->dev_type, active->dev_type);
- CHK_NEQ(staging->channel, active->channel);
- CHK_NEQ(staging->air_propagation, active->air_propagation);
- CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
- active->ofdm_ht_single_stream_basic_rates);
- CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
- active->ofdm_ht_dual_stream_basic_rates);
- CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates,
- active->ofdm_ht_triple_stream_basic_rates);
- CHK_NEQ(staging->assoc_id, active->assoc_id);
-
- /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
- * be updated with the RXON_ASSOC command -- however only some
- * flag transitions are allowed using RXON_ASSOC */
-
- /* Check if we are not switching bands */
- CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
- active->flags & RXON_FLG_BAND_24G_MSK);
-
- /* Check if we are switching association toggle */
- CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
- active->filter_flags & RXON_FILTER_ASSOC_MSK);
-
-#undef CHK
-#undef CHK_NEQ
-
- return 0;
-}
-
-#ifdef CONFIG_IWLWIFI_DEBUG
-void iwl_print_rx_config_cmd(struct iwl_priv *priv,
- enum iwl_rxon_context_id ctxid)
-{
- struct iwl_rxon_context *ctx = &priv->contexts[ctxid];
- struct iwl_rxon_cmd *rxon = &ctx->staging;
-
- IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
- iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
- IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n",
- le16_to_cpu(rxon->channel));
- IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n",
- le32_to_cpu(rxon->flags));
- IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
- le32_to_cpu(rxon->filter_flags));
- IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
- IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
- rxon->ofdm_basic_rates);
- IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n",
- rxon->cck_basic_rates);
- IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
- IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
- IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n",
- le16_to_cpu(rxon->assoc_id));
-}
-#endif
-
-static void iwl_calc_basic_rates(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- int lowest_present_ofdm = 100;
- int lowest_present_cck = 100;
- u8 cck = 0;
- u8 ofdm = 0;
-
- if (ctx->vif) {
- struct ieee80211_supported_band *sband;
- unsigned long basic = ctx->vif->bss_conf.basic_rates;
- int i;
-
- sband = priv->hw->wiphy->bands[priv->hw->conf.chandef.chan->band];
-
- for_each_set_bit(i, &basic, BITS_PER_LONG) {
- int hw = sband->bitrates[i].hw_value;
- if (hw >= IWL_FIRST_OFDM_RATE) {
- ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
- if (lowest_present_ofdm > hw)
- lowest_present_ofdm = hw;
- } else {
- BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
-
- cck |= BIT(hw);
- if (lowest_present_cck > hw)
- lowest_present_cck = hw;
- }
- }
- }
-
- /*
- * Now we've got the basic rates as bitmaps in the ofdm and cck
- * variables. This isn't sufficient though, as there might not
- * be all the right rates in the bitmap. E.g. if the only basic
- * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
- * and 6 Mbps because the 802.11-2007 standard says in 9.6:
- *
- * [...] a STA responding to a received frame shall transmit
- * its Control Response frame [...] at the highest rate in the
- * BSSBasicRateSet parameter that is less than or equal to the
- * rate of the immediately previous frame in the frame exchange
- * sequence ([...]) and that is of the same modulation class
- * ([...]) as the received frame. If no rate contained in the
- * BSSBasicRateSet parameter meets these conditions, then the
- * control frame sent in response to a received frame shall be
- * transmitted at the highest mandatory rate of the PHY that is
- * less than or equal to the rate of the received frame, and
- * that is of the same modulation class as the received frame.
- *
- * As a consequence, we need to add all mandatory rates that are
- * lower than all of the basic rates to these bitmaps.
- */
-
- if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
- ofdm |= IWL_RATE_24M_MASK >> IWL_FIRST_OFDM_RATE;
- if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
- ofdm |= IWL_RATE_12M_MASK >> IWL_FIRST_OFDM_RATE;
- /* 6M already there or needed so always add */
- ofdm |= IWL_RATE_6M_MASK >> IWL_FIRST_OFDM_RATE;
-
- /*
- * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
- * Note, however:
- * - if no CCK rates are basic, it must be ERP since there must
- * be some basic rates at all, so they're OFDM => ERP PHY
- * (or we're in 5 GHz, and the cck bitmap will never be used)
- * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
- * - if 5.5M is basic, 1M and 2M are mandatory
- * - if 2M is basic, 1M is mandatory
- * - if 1M is basic, that's the only valid ACK rate.
- * As a consequence, it's not as complicated as it sounds, just add
- * any lower rates to the ACK rate bitmap.
- */
- if (IWL_RATE_11M_INDEX < lowest_present_cck)
- cck |= IWL_RATE_11M_MASK >> IWL_FIRST_CCK_RATE;
- if (IWL_RATE_5M_INDEX < lowest_present_cck)
- cck |= IWL_RATE_5M_MASK >> IWL_FIRST_CCK_RATE;
- if (IWL_RATE_2M_INDEX < lowest_present_cck)
- cck |= IWL_RATE_2M_MASK >> IWL_FIRST_CCK_RATE;
- /* 1M already there or needed so always add */
- cck |= IWL_RATE_1M_MASK >> IWL_FIRST_CCK_RATE;
-
- IWL_DEBUG_RATE(priv, "Set basic rates cck:0x%.2x ofdm:0x%.2x\n",
- cck, ofdm);
-
- /* "basic_rates" is a misnomer here -- should be called ACK rates */
- ctx->staging.cck_basic_rates = cck;
- ctx->staging.ofdm_basic_rates = ofdm;
-}
-
-/**
- * iwlagn_commit_rxon - commit staging_rxon to hardware
- *
- * The RXON command in staging_rxon is committed to the hardware and
- * the active_rxon structure is updated with the new data. This
- * function correctly transitions out of the RXON_ASSOC_MSK state if
- * a HW tune is required based on the RXON structure changes.
- *
- * The connect/disconnect flow should be as the following:
- *
- * 1. make sure send RXON command with association bit unset if not connect
- * this should include the channel and the band for the candidate
- * to be connected to
- * 2. Add Station before RXON association with the AP
- * 3. RXON_timing has to send before RXON for connection
- * 4. full RXON command - associated bit set
- * 5. use RXON_ASSOC command to update any flags changes
- */
-int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
-{
- /* cast away the const for active_rxon in this function */
- struct iwl_rxon_cmd *active = (void *)&ctx->active;
- bool new_assoc = !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
- int ret;
-
- lockdep_assert_held(&priv->mutex);
-
- if (!iwl_is_alive(priv))
- return -EBUSY;
-
- /* This function hardcodes a bunch of dual-mode assumptions */
- BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
-
- if (!ctx->is_active)
- return 0;
-
- /* always get timestamp with Rx frame */
- ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
-
- /* recalculate basic rates */
- iwl_calc_basic_rates(priv, ctx);
-
- /*
- * force CTS-to-self frames protection if RTS-CTS is not preferred
- * one aggregation protection method
- */
- if (!priv->hw_params.use_rts_for_aggregation)
- ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
-
- if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) ||
- !(ctx->staging.flags & RXON_FLG_BAND_24G_MSK))
- ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
- else
- ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
-
- iwl_print_rx_config_cmd(priv, ctx->ctxid);
- ret = iwl_check_rxon_cmd(priv, ctx);
- if (ret) {
- IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
- return -EINVAL;
- }
-
- /*
- * receive commit_rxon request
- * abort any previous channel switch if still in process
- */
- if (test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status) &&
- (priv->switch_channel != ctx->staging.channel)) {
- IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
- le16_to_cpu(priv->switch_channel));
- iwl_chswitch_done(priv, false);
- }
-
- /*
- * If we don't need to send a full RXON, we can use
- * iwl_rxon_assoc_cmd which is used to reconfigure filter
- * and other flags for the current radio configuration.
- */
- if (!iwl_full_rxon_required(priv, ctx)) {
- ret = iwlagn_send_rxon_assoc(priv, ctx);
- if (ret) {
- IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
- return ret;
- }
-
- memcpy(active, &ctx->staging, sizeof(*active));
- /*
- * We do not commit tx power settings while channel changing,
- * do it now if after settings changed.
- */
- iwl_set_tx_power(priv, priv->tx_power_next, false);
-
- /* make sure we are in the right PS state */
- iwl_power_update_mode(priv, true);
-
- return 0;
- }
-
- iwl_set_rxon_hwcrypto(priv, ctx, !iwlwifi_mod_params.sw_crypto);
-
- IWL_DEBUG_INFO(priv,
- "Going to commit RXON\n"
- " * with%s RXON_FILTER_ASSOC_MSK\n"
- " * channel = %d\n"
- " * bssid = %pM\n",
- (new_assoc ? "" : "out"),
- le16_to_cpu(ctx->staging.channel),
- ctx->staging.bssid_addr);
-
- /*
- * Always clear associated first, but with the correct config.
- * This is required as for example station addition for the
- * AP station must be done after the BSSID is set to correctly
- * set up filters in the device.
- */
- ret = iwlagn_rxon_disconn(priv, ctx);
- if (ret)
- return ret;
-
- ret = iwlagn_set_pan_params(priv);
- if (ret)
- return ret;
-
- if (new_assoc)
- return iwlagn_rxon_connect(priv, ctx);
-
- return 0;
-}
-
-void iwlagn_config_ht40(struct ieee80211_conf *conf,
- struct iwl_rxon_context *ctx)
-{
- if (conf_is_ht40_minus(conf)) {
- ctx->ht.extension_chan_offset =
- IEEE80211_HT_PARAM_CHA_SEC_BELOW;
- ctx->ht.is_40mhz = true;
- } else if (conf_is_ht40_plus(conf)) {
- ctx->ht.extension_chan_offset =
- IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
- ctx->ht.is_40mhz = true;
- } else {
- ctx->ht.extension_chan_offset =
- IEEE80211_HT_PARAM_CHA_SEC_NONE;
- ctx->ht.is_40mhz = false;
- }
-}
-
-int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
-{
- struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
- struct iwl_rxon_context *ctx;
- struct ieee80211_conf *conf = &hw->conf;
- struct ieee80211_channel *channel = conf->chandef.chan;
- int ret = 0;
-
- IWL_DEBUG_MAC80211(priv, "enter: changed %#x\n", changed);
-
- mutex_lock(&priv->mutex);
-
- if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
- IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
- goto out;
- }
-
- if (!iwl_is_ready(priv)) {
- IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
- goto out;
- }
-
- if (changed & (IEEE80211_CONF_CHANGE_SMPS |
- IEEE80211_CONF_CHANGE_CHANNEL)) {
- /* mac80211 uses static for non-HT which is what we want */
- priv->current_ht_config.smps = conf->smps_mode;
-
- /*
- * Recalculate chain counts.
- *
- * If monitor mode is enabled then mac80211 will
- * set up the SM PS mode to OFF if an HT channel is
- * configured.
- */
- for_each_context(priv, ctx)
- iwlagn_set_rxon_chain(priv, ctx);
- }
-
- if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
- for_each_context(priv, ctx) {
- /* Configure HT40 channels */
- if (ctx->ht.enabled != conf_is_ht(conf))
- ctx->ht.enabled = conf_is_ht(conf);
-
- if (ctx->ht.enabled) {
- /* if HT40 is used, it should not change
- * after associated except channel switch */
- if (!ctx->ht.is_40mhz ||
- !iwl_is_associated_ctx(ctx))
- iwlagn_config_ht40(conf, ctx);
- } else
- ctx->ht.is_40mhz = false;
-
- /*
- * Default to no protection. Protection mode will
- * later be set from BSS config in iwl_ht_conf
- */
- ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
-
- /* if we are switching from ht to 2.4 clear flags
- * from any ht related info since 2.4 does not
- * support ht */
- if (le16_to_cpu(ctx->staging.channel) !=
- channel->hw_value)
- ctx->staging.flags = 0;
-
- iwl_set_rxon_channel(priv, channel, ctx);
- iwl_set_rxon_ht(priv, &priv->current_ht_config);
-
- iwl_set_flags_for_band(priv, ctx, channel->band,
- ctx->vif);
- }
-
- iwl_update_bcast_stations(priv);
- }
-
- if (changed & (IEEE80211_CONF_CHANGE_PS |
- IEEE80211_CONF_CHANGE_IDLE)) {
- ret = iwl_power_update_mode(priv, false);
- if (ret)
- IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
- }
-
- if (changed & IEEE80211_CONF_CHANGE_POWER) {
- IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
- priv->tx_power_user_lmt, conf->power_level);
-
- iwl_set_tx_power(priv, conf->power_level, false);
- }
-
- for_each_context(priv, ctx) {
- if (!memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
- continue;
- iwlagn_commit_rxon(priv, ctx);
- }
- out:
- mutex_unlock(&priv->mutex);
- IWL_DEBUG_MAC80211(priv, "leave\n");
-
- return ret;
-}
-
-static void iwlagn_check_needed_chains(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct ieee80211_bss_conf *bss_conf)
-{
- struct ieee80211_vif *vif = ctx->vif;
- struct iwl_rxon_context *tmp;
- struct ieee80211_sta *sta;
- struct iwl_ht_config *ht_conf = &priv->current_ht_config;
- struct ieee80211_sta_ht_cap *ht_cap;
- bool need_multiple;
-
- lockdep_assert_held(&priv->mutex);
-
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- rcu_read_lock();
- sta = ieee80211_find_sta(vif, bss_conf->bssid);
- if (!sta) {
- /*
- * If at all, this can only happen through a race
- * when the AP disconnects us while we're still
- * setting up the connection, in that case mac80211
- * will soon tell us about that.
- */
- need_multiple = false;
- rcu_read_unlock();
- break;
- }
-
- ht_cap = &sta->ht_cap;
-
- need_multiple = true;
-
- /*
- * If the peer advertises no support for receiving 2 and 3
- * stream MCS rates, it can't be transmitting them either.
- */
- if (ht_cap->mcs.rx_mask[1] == 0 &&
- ht_cap->mcs.rx_mask[2] == 0) {
- need_multiple = false;
- } else if (!(ht_cap->mcs.tx_params &
- IEEE80211_HT_MCS_TX_DEFINED)) {
- /* If it can't TX MCS at all ... */
- need_multiple = false;
- } else if (ht_cap->mcs.tx_params &
- IEEE80211_HT_MCS_TX_RX_DIFF) {
- int maxstreams;
-
- /*
- * But if it can receive them, it might still not
- * be able to transmit them, which is what we need
- * to check here -- so check the number of streams
- * it advertises for TX (if different from RX).
- */
-
- maxstreams = (ht_cap->mcs.tx_params &
- IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK);
- maxstreams >>=
- IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
- maxstreams += 1;
-
- if (maxstreams <= 1)
- need_multiple = false;
- }
-
- rcu_read_unlock();
- break;
- case NL80211_IFTYPE_ADHOC:
- /* currently */
- need_multiple = false;
- break;
- default:
- /* only AP really */
- need_multiple = true;
- break;
- }
-
- ctx->ht_need_multiple_chains = need_multiple;
-
- if (!need_multiple) {
- /* check all contexts */
- for_each_context(priv, tmp) {
- if (!tmp->vif)
- continue;
- if (tmp->ht_need_multiple_chains) {
- need_multiple = true;
- break;
- }
- }
- }
-
- ht_conf->single_chain_sufficient = !need_multiple;
-}
-
-static void iwlagn_chain_noise_reset(struct iwl_priv *priv)
-{
- struct iwl_chain_noise_data *data = &priv->chain_noise_data;
- int ret;
-
- if (priv->calib_disabled & IWL_CHAIN_NOISE_CALIB_DISABLED)
- return;
-
- if ((data->state == IWL_CHAIN_NOISE_ALIVE) &&
- iwl_is_any_associated(priv)) {
- struct iwl_calib_chain_noise_reset_cmd cmd;
-
- /* clear data for chain noise calibration algorithm */
- data->chain_noise_a = 0;
- data->chain_noise_b = 0;
- data->chain_noise_c = 0;
- data->chain_signal_a = 0;
- data->chain_signal_b = 0;
- data->chain_signal_c = 0;
- data->beacon_count = 0;
-
- memset(&cmd, 0, sizeof(cmd));
- iwl_set_calib_hdr(&cmd.hdr,
- priv->phy_calib_chain_noise_reset_cmd);
- ret = iwl_dvm_send_cmd_pdu(priv,
- REPLY_PHY_CALIBRATION_CMD,
- 0, sizeof(cmd), &cmd);
- if (ret)
- IWL_ERR(priv,
- "Could not send REPLY_PHY_CALIBRATION_CMD\n");
- data->state = IWL_CHAIN_NOISE_ACCUMULATE;
- IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
- }
-}
-
-void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf,
- u32 changes)
-{
- struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
- struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
- int ret;
- bool force = false;
-
- mutex_lock(&priv->mutex);
-
- if (changes & BSS_CHANGED_IDLE && bss_conf->idle) {
- /*
- * If we go idle, then clearly no "passive-no-rx"
- * workaround is needed any more, this is a reset.
- */
- iwlagn_lift_passive_no_rx(priv);
- }
-
- if (unlikely(!iwl_is_ready(priv))) {
- IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
- mutex_unlock(&priv->mutex);
- return;
- }
-
- if (unlikely(!ctx->vif)) {
- IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n");
- mutex_unlock(&priv->mutex);
- return;
- }
-
- if (changes & BSS_CHANGED_BEACON_INT)
- force = true;
-
- if (changes & BSS_CHANGED_QOS) {
- ctx->qos_data.qos_active = bss_conf->qos;
- iwlagn_update_qos(priv, ctx);
- }
-
- ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
- if (vif->bss_conf.use_short_preamble)
- ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
- else
- ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
-
- if (changes & BSS_CHANGED_ASSOC) {
- if (bss_conf->assoc) {
- priv->timestamp = bss_conf->sync_tsf;
- ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
- } else {
- ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
-
- if (ctx->ctxid == IWL_RXON_CTX_BSS)
- priv->have_rekey_data = false;
- }
-
- iwlagn_bt_coex_rssi_monitor(priv);
- }
-
- if (ctx->ht.enabled) {
- ctx->ht.protection = bss_conf->ht_operation_mode &
- IEEE80211_HT_OP_MODE_PROTECTION;
- ctx->ht.non_gf_sta_present = !!(bss_conf->ht_operation_mode &
- IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
- iwlagn_check_needed_chains(priv, ctx, bss_conf);
- iwl_set_rxon_ht(priv, &priv->current_ht_config);
- }
-
- iwlagn_set_rxon_chain(priv, ctx);
-
- if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
- ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
- else
- ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
-
- if (bss_conf->use_cts_prot)
- ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
- else
- ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
-
- memcpy(ctx->staging.bssid_addr, bss_conf->bssid, ETH_ALEN);
-
- if (vif->type == NL80211_IFTYPE_AP ||
- vif->type == NL80211_IFTYPE_ADHOC) {
- if (vif->bss_conf.enable_beacon) {
- ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
- priv->beacon_ctx = ctx;
- } else {
- ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- priv->beacon_ctx = NULL;
- }
- }
-
- /*
- * If the ucode decides to do beacon filtering before
- * association, it will lose beacons that are needed
- * before sending frames out on passive channels. This
- * causes association failures on those channels. Enable
- * receiving beacons in such cases.
- */
-
- if (vif->type == NL80211_IFTYPE_STATION) {
- if (!bss_conf->assoc)
- ctx->staging.filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
- else
- ctx->staging.filter_flags &=
- ~RXON_FILTER_BCON_AWARE_MSK;
- }
-
- if (force || memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
- iwlagn_commit_rxon(priv, ctx);
-
- if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
- /*
- * The chain noise calibration will enable PM upon
- * completion. If calibration has already been run
- * then we need to enable power management here.
- */
- if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
- iwl_power_update_mode(priv, false);
-
- /* Enable RX differential gain and sensitivity calibrations */
- iwlagn_chain_noise_reset(priv);
- priv->start_calib = 1;
- }
-
- if (changes & BSS_CHANGED_IBSS) {
- ret = iwlagn_manage_ibss_station(priv, vif,
- bss_conf->ibss_joined);
- if (ret)
- IWL_ERR(priv, "failed to %s IBSS station %pM\n",
- bss_conf->ibss_joined ? "add" : "remove",
- bss_conf->bssid);
- }
-
- if (changes & BSS_CHANGED_BEACON && priv->beacon_ctx == ctx) {
- if (iwlagn_update_beacon(priv, vif))
- IWL_ERR(priv, "Error updating beacon\n");
- }
-
- mutex_unlock(&priv->mutex);
-}
-
-void iwlagn_post_scan(struct iwl_priv *priv)
-{
- struct iwl_rxon_context *ctx;
-
- /*
- * We do not commit power settings while scan is pending,
- * do it now if the settings changed.
- */
- iwl_power_set_mode(priv, &priv->power_data.sleep_cmd_next, false);
- iwl_set_tx_power(priv, priv->tx_power_next, false);
-
- /*
- * Since setting the RXON may have been deferred while
- * performing the scan, fire one off if needed
- */
- for_each_context(priv, ctx)
- if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
- iwlagn_commit_rxon(priv, ctx);
-
- iwlagn_set_pan_params(priv);
-}
projects / cascardo / linux.git / blobdiff