Put generic rx_handlers (except iwlagn_rx_reply_compressed_ba) to
iwl-rx.c . Make functions static and change prefix from iwlagn_ to
iwl_ . Beautify iwl_setup_rx_handlers and do some other minor coding
style changes.
Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 235 -------------
drivers/net/wireless/iwlwifi/iwl-agn.c | 176 ----------
drivers/net/wireless/iwlwifi/iwl-agn.h | 13 +-
drivers/net/wireless/iwlwifi/iwl-core.c | 63 ----
drivers/net/wireless/iwlwifi/iwl-core.h | 18 +-
drivers/net/wireless/iwlwifi/iwl-rx.c | 523 ++++++++++++++++++++++++++--
6 files changed, 500 insertions(+), 528 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index fd142be..b889129 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -994,241 +994,6 @@ int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
return -1;
}
-/* Calc max signal level (dBm) among 3 possible receivers */
-static inline int iwlagn_calc_rssi(struct iwl_priv *priv,
- struct iwl_rx_phy_res *rx_resp)
-{
- return priv->cfg->ops->utils->calc_rssi(priv, rx_resp);
-}
-
-static u32 iwlagn_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;
-}
-
-static void iwlagn_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;
-
- /* 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 (!priv->cfg->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);
- memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
-
- ieee80211_rx(priv->hw, skb);
- priv->alloc_rxb_page--;
- rxb->page = NULL;
-}
-
-/* Called for REPLY_RX (legacy ABG frames), or
- * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
-void iwlagn_rx_reply_rx(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
- 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->_agn.last_phy_res_valid) {
- IWL_ERR(priv, "MPDU frame without cached PHY data\n");
- return;
- }
- phy_res = &priv->_agn.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 = iwlagn_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;
- }
-
- 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;
- }
-
- /* 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;
-
- iwlagn_pass_packet_to_mac80211(priv, header, len, ampdu_status,
- rxb, &rx_status);
-}
-
-/* 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. */
-void iwlagn_rx_reply_rx_phy(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- priv->_agn.last_phy_res_valid = true;
- memcpy(&priv->_agn.last_phy_res, pkt->u.raw,
- sizeof(struct iwl_rx_phy_res));
-}
-
static int iwl_get_single_channel_for_scan(struct iwl_priv *priv,
struct ieee80211_vif *vif,
enum ieee80211_band band,
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index c96d4ad..6b6f2d8 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -424,60 +424,6 @@ int iwl_hw_tx_queue_init(struct iwl_priv *priv,
return 0;
}
-/******************************************************************************
- *
- * Generic RX handler implementations
- *
- ******************************************************************************/
-static void iwl_rx_reply_alive(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_alive_resp *palive;
- struct delayed_work *pwork;
-
- palive = &pkt->u.alive_frame;
-
- IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
- "0x%01X 0x%01X\n",
- palive->is_valid, palive->ver_type,
- palive->ver_subtype);
-
- if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
- IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
- memcpy(&priv->card_alive_init,
- &pkt->u.alive_frame,
- sizeof(struct iwl_init_alive_resp));
- pwork = &priv->init_alive_start;
- } else {
- IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
- memcpy(&priv->card_alive, &pkt->u.alive_frame,
- sizeof(struct iwl_alive_resp));
- pwork = &priv->alive_start;
- }
-
- /* We delay the ALIVE response by 5ms to
- * give the HW RF Kill time to activate... */
- if (palive->is_valid == UCODE_VALID_OK)
- queue_delayed_work(priv->workqueue, pwork,
- msecs_to_jiffies(5));
- else {
- IWL_WARN(priv, "%s uCode did not respond OK.\n",
- (palive->ver_subtype == INITIALIZE_SUBTYPE) ?
- "init" : "runtime");
- /*
- * If fail to load init uCode,
- * let's try to load the init uCode again.
- * We should not get into this situation, but if it
- * does happen, we should not move on and loading "runtime"
- * without proper calibrate the device.
- */
- if (palive->ver_subtype == INITIALIZE_SUBTYPE)
- priv->ucode_type = UCODE_NONE;
- queue_work(priv->workqueue, &priv->restart);
- }
-}
-
static void iwl_bg_beacon_update(struct work_struct *work)
{
struct iwl_priv *priv =
@@ -712,83 +658,6 @@ static void iwl_bg_ucode_trace(unsigned long data)
}
}
-static void iwlagn_rx_beacon_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwlagn_beacon_notif *beacon = (void *)pkt->u.raw;
-#ifdef CONFIG_IWLWIFI_DEBUG
- u16 status = le16_to_cpu(beacon->beacon_notify_hdr.status.status);
- u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
-
- IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d "
- "tsf:0x%.8x%.8x rate:%d\n",
- status & TX_STATUS_MSK,
- beacon->beacon_notify_hdr.failure_frame,
- le32_to_cpu(beacon->ibss_mgr_status),
- le32_to_cpu(beacon->high_tsf),
- le32_to_cpu(beacon->low_tsf), rate);
-#endif
-
- priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
-
- if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
- queue_work(priv->workqueue, &priv->beacon_update);
-}
-
-/* Handle notification from uCode that card's power state is changing
- * due to software, hardware, or critical temperature RFKILL */
-static void iwl_rx_card_state_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
- unsigned long status = priv->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(priv, CSR_UCODE_DRV_GP1_SET,
- CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
-
- iwl_write_direct32(priv, HBUS_TARG_MBX_C,
- HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
-
- if (!(flags & RXON_CARD_DISABLED)) {
- iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
- CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
- iwl_write_direct32(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->status);
- else
- clear_bit(STATUS_RF_KILL_HW, &priv->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->status)))
- wiphy_rfkill_set_hw_state(priv->hw->wiphy,
- test_bit(STATUS_RF_KILL_HW, &priv->status));
- else
- wake_up_interruptible(&priv->wait_command_queue);
-}
-
static void iwl_bg_tx_flush(struct work_struct *work)
{
struct iwl_priv *priv =
@@ -808,51 +677,6 @@ static void iwl_bg_tx_flush(struct work_struct *work)
}
/**
- * 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.
- *
- * This function chains into the hardware specific files for them to setup
- * any hardware specific handlers as well.
- */
-static void iwl_setup_rx_handlers(struct iwl_priv *priv)
-{
- priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
- priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
- priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
- priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
- iwl_rx_spectrum_measure_notif;
- priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
- priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
- iwl_rx_pm_debug_statistics_notif;
- priv->rx_handlers[BEACON_NOTIFICATION] = iwlagn_rx_beacon_notif;
-
- /*
- * 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.
- */
- priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
- priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
-
- iwl_setup_rx_scan_handlers(priv);
-
- /* status change handler */
- priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
-
- priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
- iwl_rx_missed_beacon_notif;
- /* Rx handlers */
- priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
- priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
- /* block ack */
- priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
- /* Set up hardware specific Rx handlers */
- priv->cfg->ops->lib->rx_handler_setup(priv);
-}
-
-/**
* iwl_rx_handle - Main entry function for receiving responses from uCode
*
* Uses the priv->rx_handlers callback function array to invoke
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.h b/drivers/net/wireless/iwlwifi/iwl-agn.h
index b5a169b..20f8e41 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.h
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.h
@@ -190,10 +190,7 @@ void iwlagn_rx_replenish_now(struct iwl_priv *priv);
void iwlagn_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
int iwlagn_rxq_stop(struct iwl_priv *priv);
int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band);
-void iwlagn_rx_reply_rx(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
-void iwlagn_rx_reply_rx_phy(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
+void iwl_setup_rx_handlers(struct iwl_priv *priv);
/* tx */
void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
@@ -243,14 +240,6 @@ static inline bool iwl_is_tx_success(u32 status)
u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant_idx, u8 valid);
-/* rx */
-void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
-void iwl_rx_statistics(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
-void iwl_reply_statistics(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
-
/* scan */
int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif);
void iwlagn_post_scan(struct iwl_priv *priv);
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 4bd3420..6c30fa6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -869,33 +869,6 @@ void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
}
}
-void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
- /*
- * MULTI-FIXME
- * See iwl_mac_channel_switch.
- */
- struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
- struct iwl_rxon_cmd *rxon = (void *)&ctx->active;
-
- if (priv->switch_rxon.switch_in_progress) {
- if (!le32_to_cpu(csa->status) &&
- (csa->channel == priv->switch_rxon.channel)) {
- rxon->channel = csa->channel;
- ctx->staging.channel = csa->channel;
- IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
- le16_to_cpu(csa->channel));
- iwl_chswitch_done(priv, true);
- } else {
- IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
- le16_to_cpu(csa->channel));
- iwl_chswitch_done(priv, false);
- }
- }
-}
-
#ifdef CONFIG_IWLWIFI_DEBUG
void iwl_print_rx_config_cmd(struct iwl_priv *priv,
struct iwl_rxon_context *ctx)
@@ -1245,42 +1218,6 @@ int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
&statistics_cmd);
}
-void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
-#ifdef CONFIG_IWLWIFI_DEBUG
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
- IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
- sleep->pm_sleep_mode, sleep->pm_wakeup_src);
-#endif
-}
-
-void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
- IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
- "notification for %s:\n", len,
- get_cmd_string(pkt->hdr.cmd));
- iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
-}
-
-void iwl_rx_reply_error(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
-
- IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
- "seq 0x%04X ser 0x%08X\n",
- le32_to_cpu(pkt->u.err_resp.error_type),
- get_cmd_string(pkt->u.err_resp.cmd_id),
- pkt->u.err_resp.cmd_id,
- le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
- le32_to_cpu(pkt->u.err_resp.error_info));
-}
-
void iwl_clear_isr_stats(struct iwl_priv *priv)
{
memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index d47f3a8..af47750 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -441,10 +441,6 @@ bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
void iwl_connection_init_rx_config(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
void iwl_set_rate(struct iwl_priv *priv);
-int iwl_set_decrypted_flag(struct iwl_priv *priv,
- struct ieee80211_hdr *hdr,
- u32 decrypt_res,
- struct ieee80211_rx_status *stats);
void iwl_irq_handle_error(struct iwl_priv *priv);
int iwl_mac_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
@@ -493,15 +489,6 @@ static inline void iwl_update_stats(struct iwl_priv *priv, bool is_tx,
{
}
#endif
-/*****************************************************
- * RX handlers.
- * **************************************************/
-void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
-void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
-void iwl_rx_reply_error(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
/*****************************************************
* RX
@@ -513,11 +500,8 @@ void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
struct iwl_rx_queue *q);
int iwl_rx_queue_space(const struct iwl_rx_queue *q);
void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
-/* Handlers */
-void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb);
+
void iwl_chswitch_done(struct iwl_priv *priv, bool is_success);
-void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
/* TX helpers */
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index 566e2d9..8dc1294 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -38,7 +38,14 @@
#include "iwl-io.h"
#include "iwl-helpers.h"
#include "iwl-agn-calib.h"
-/************************** RX-FUNCTIONS ****************************/
+#include "iwl-agn.h"
+
+/******************************************************************************
+ *
+ * RX path functions
+ *
+ ******************************************************************************/
+
/*
* Rx theory of operation
*
@@ -211,7 +218,104 @@ err_bd:
return -ENOMEM;
}
-void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
+/******************************************************************************
+ *
+ * Generic RX handler implementations
+ *
+ ******************************************************************************/
+
+static void iwl_rx_reply_alive(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_alive_resp *palive;
+ struct delayed_work *pwork;
+
+ palive = &pkt->u.alive_frame;
+
+ IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
+ "0x%01X 0x%01X\n",
+ palive->is_valid, palive->ver_type,
+ palive->ver_subtype);
+
+ if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
+ IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
+ memcpy(&priv->card_alive_init,
+ &pkt->u.alive_frame,
+ sizeof(struct iwl_init_alive_resp));
+ pwork = &priv->init_alive_start;
+ } else {
+ IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
+ memcpy(&priv->card_alive, &pkt->u.alive_frame,
+ sizeof(struct iwl_alive_resp));
+ pwork = &priv->alive_start;
+ }
+
+ /* We delay the ALIVE response by 5ms to
+ * give the HW RF Kill time to activate... */
+ if (palive->is_valid == UCODE_VALID_OK)
+ queue_delayed_work(priv->workqueue, pwork,
+ msecs_to_jiffies(5));
+ else {
+ IWL_WARN(priv, "%s uCode did not respond OK.\n",
+ (palive->ver_subtype == INITIALIZE_SUBTYPE) ?
+ "init" : "runtime");
+ /*
+ * If fail to load init uCode,
+ * let's try to load the init uCode again.
+ * We should not get into this situation, but if it
+ * does happen, we should not move on and loading "runtime"
+ * without proper calibrate the device.
+ */
+ if (palive->ver_subtype == INITIALIZE_SUBTYPE)
+ priv->ucode_type = UCODE_NONE;
+ queue_work(priv->workqueue, &priv->restart);
+ }
+}
+
+static void iwl_rx_reply_error(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+ IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
+ "seq 0x%04X ser 0x%08X\n",
+ le32_to_cpu(pkt->u.err_resp.error_type),
+ get_cmd_string(pkt->u.err_resp.cmd_id),
+ pkt->u.err_resp.cmd_id,
+ le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
+ le32_to_cpu(pkt->u.err_resp.error_info));
+}
+
+static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
+ /*
+ * MULTI-FIXME
+ * See iwl_mac_channel_switch.
+ */
+ struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+ struct iwl_rxon_cmd *rxon = (void *)&ctx->active;
+
+ if (priv->switch_rxon.switch_in_progress) {
+ if (!le32_to_cpu(csa->status) &&
+ (csa->channel == priv->switch_rxon.channel)) {
+ rxon->channel = csa->channel;
+ ctx->staging.channel = csa->channel;
+ IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
+ le16_to_cpu(csa->channel));
+ iwl_chswitch_done(priv, true);
+ } else {
+ IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
+ le16_to_cpu(csa->channel));
+ iwl_chswitch_done(priv, false);
+ }
+ }
+}
+
+
+static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
@@ -227,6 +331,52 @@ void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
priv->measurement_status |= MEASUREMENT_READY;
}
+static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+#ifdef CONFIG_IWLWIFI_DEBUG
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
+ IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
+ sleep->pm_sleep_mode, sleep->pm_wakeup_src);
+#endif
+}
+
+static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
+ IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
+ "notification for %s:\n", len,
+ get_cmd_string(pkt->hdr.cmd));
+ iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
+}
+
+static void iwl_rx_beacon_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwlagn_beacon_notif *beacon = (void *)pkt->u.raw;
+#ifdef CONFIG_IWLWIFI_DEBUG
+ u16 status = le16_to_cpu(beacon->beacon_notify_hdr.status.status);
+ u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
+
+ IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d "
+ "tsf:0x%.8x%.8x rate:%d\n",
+ status & TX_STATUS_MSK,
+ beacon->beacon_notify_hdr.failure_frame,
+ le32_to_cpu(beacon->ibss_mgr_status),
+ le32_to_cpu(beacon->high_tsf),
+ le32_to_cpu(beacon->low_tsf), rate);
+#endif
+
+ priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
+
+ if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
+ queue_work(priv->workqueue, &priv->beacon_update);
+}
+
/* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
#define ACK_CNT_RATIO (50)
#define BA_TIMEOUT_CNT (5)
@@ -298,7 +448,8 @@ static bool iwl_good_ack_health(struct iwl_priv *priv, struct iwl_rx_packet *pkt
* When the plcp error is exceeding the thresholds, reset the radio
* to improve the throughput.
*/
-static bool iwl_good_plcp_health(struct iwl_priv *priv, struct iwl_rx_packet *pkt)
+static bool iwl_good_plcp_health(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt)
{
bool rc = true;
int combined_plcp_delta;
@@ -378,7 +529,8 @@ static bool iwl_good_plcp_health(struct iwl_priv *priv, struct iwl_rx_packet *pk
return rc;
}
-static void iwl_recover_from_statistics(struct iwl_priv *priv, struct iwl_rx_packet *pkt)
+static void iwl_recover_from_statistics(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt)
{
const struct iwl_mod_params *mod_params = priv->cfg->mod_params;
@@ -442,7 +594,6 @@ static void iwl_rx_calc_noise(struct iwl_priv *priv)
last_rx_noise);
}
-#ifdef CONFIG_IWLWIFI_DEBUGFS
/*
* based on the assumption of all statistics counter are in DWORD
* FIXME: This function is for debugging, do not deal with
@@ -451,6 +602,7 @@ static void iwl_rx_calc_noise(struct iwl_priv *priv)
static void iwl_accumulative_statistics(struct iwl_priv *priv,
__le32 *stats)
{
+#ifdef CONFIG_IWLWIFI_DEBUGFS
int i, size;
__le32 *prev_stats;
u32 *accum_stats;
@@ -498,14 +650,13 @@ static void iwl_accumulative_statistics(struct iwl_priv *priv,
accum_tx->tx_power.ant_a = tx->tx_power.ant_a;
accum_tx->tx_power.ant_b = tx->tx_power.ant_b;
accum_tx->tx_power.ant_c = tx->tx_power.ant_c;
-}
#endif
+}
-#define REG_RECALIB_PERIOD (60)
-
-void iwl_rx_statistics(struct iwl_priv *priv,
+static void iwl_rx_statistics(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
+ const int reg_recalib_period = 60;
int change;
struct iwl_rx_packet *pkt = rxb_addr(rxb);
@@ -522,10 +673,8 @@ void iwl_rx_statistics(struct iwl_priv *priv,
STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
(pkt->u.stats_bt.flag &
STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats_bt);
-#endif
+ iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats_bt);
} else {
IWL_DEBUG_RX(priv,
"Statistics notification received (%d vs %d).\n",
@@ -539,10 +688,8 @@ void iwl_rx_statistics(struct iwl_priv *priv,
STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
(pkt->u.stats.flag &
STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
-#endif
+ iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
}
iwl_recover_from_statistics(priv, pkt);
@@ -557,11 +704,11 @@ void iwl_rx_statistics(struct iwl_priv *priv,
set_bit(STATUS_STATISTICS, &priv->status);
/* Reschedule the statistics timer to occur in
- * REG_RECALIB_PERIOD seconds to ensure we get a
+ * 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));
+ msecs_to_jiffies(reg_recalib_period * 1000));
if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
(pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
@@ -572,8 +719,8 @@ void iwl_rx_statistics(struct iwl_priv *priv,
priv->cfg->ops->lib->temp_ops.temperature(priv);
}
-void iwl_reply_statistics(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
+static void iwl_rx_reply_statistics(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
@@ -597,8 +744,61 @@ void iwl_reply_statistics(struct iwl_priv *priv,
iwl_rx_statistics(priv, rxb);
}
-void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
+/* Handle notification from uCode that card's power state is changing
+ * due to software, hardware, or critical temperature RFKILL */
+static void iwl_rx_card_state_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
+ unsigned long status = priv->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(priv, CSR_UCODE_DRV_GP1_SET,
+ CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+
+ iwl_write_direct32(priv, HBUS_TARG_MBX_C,
+ HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
+
+ if (!(flags & RXON_CARD_DISABLED)) {
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+ CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+ iwl_write_direct32(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->status);
+ else
+ clear_bit(STATUS_RF_KILL_HW, &priv->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->status)))
+ wiphy_rfkill_set_hw_state(priv->hw->wiphy,
+ test_bit(STATUS_RF_KILL_HW, &priv->status));
+ else
+ wake_up_interruptible(&priv->wait_command_queue);
+}
+
+static void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
@@ -618,13 +818,25 @@ void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
}
}
+/* 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 void iwl_rx_reply_rx_phy(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+ priv->_agn.last_phy_res_valid = true;
+ memcpy(&priv->_agn.last_phy_res, pkt->u.raw,
+ sizeof(struct iwl_rx_phy_res));
+}
+
/*
* returns non-zero if packet should be dropped
*/
-int iwl_set_decrypted_flag(struct iwl_priv *priv,
- struct ieee80211_hdr *hdr,
- u32 decrypt_res,
- struct ieee80211_rx_status *stats)
+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);
@@ -669,3 +881,264 @@ int iwl_set_decrypted_flag(struct iwl_priv *priv,
}
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;
+
+ /* 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 (!priv->cfg->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);
+ memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
+
+ ieee80211_rx(priv->hw, skb);
+ priv->alloc_rxb_page--;
+ 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;
+}
+
+/* Called for REPLY_RX (legacy ABG frames), or
+ * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
+static void iwl_rx_reply_rx(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ 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->_agn.last_phy_res_valid) {
+ IWL_ERR(priv, "MPDU frame without cached PHY data\n");
+ return;
+ }
+ phy_res = &priv->_agn.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;
+ }
+
+ 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;
+ }
+
+ /* 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 = priv->cfg->ops->utils->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);
+}
+
+/**
+ * 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)
+{
+ void (**handlers)(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
+
+ handlers = priv->rx_handlers;
+
+ handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
+ 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;
+
+ /*
+ * 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;
+
+ /* Set up hardware specific Rx handlers */
+ priv->cfg->ops->lib->rx_handler_setup(priv);
+}
--
1.7.1
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