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1427 lines
37 KiB
1427 lines
37 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/****************************************************************************** |
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* |
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* Copyright(c) 2003 - 2014 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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* Contact Information: |
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* Intel Linux Wireless <[email protected]> |
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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 <net/mac80211.h> |
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#include "iwl-trans.h" |
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#include "dev.h" |
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#include "agn.h" |
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|
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const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
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|
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static int iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
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{ |
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lockdep_assert_held(&priv->sta_lock); |
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|
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if (sta_id >= IWLAGN_STATION_COUNT) { |
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IWL_ERR(priv, "invalid sta_id %u\n", sta_id); |
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return -EINVAL; |
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} |
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if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) |
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IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u " |
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"addr %pM\n", |
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sta_id, priv->stations[sta_id].sta.sta.addr); |
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|
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if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) { |
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IWL_DEBUG_ASSOC(priv, |
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"STA id %u addr %pM already present in uCode " |
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"(according to driver)\n", |
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sta_id, priv->stations[sta_id].sta.sta.addr); |
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} else { |
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priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; |
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IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n", |
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sta_id, priv->stations[sta_id].sta.sta.addr); |
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} |
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return 0; |
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} |
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|
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static void iwl_process_add_sta_resp(struct iwl_priv *priv, |
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struct iwl_rx_packet *pkt) |
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{ |
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struct iwl_add_sta_resp *add_sta_resp = (void *)pkt->data; |
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|
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IWL_DEBUG_INFO(priv, "Processing response for adding station\n"); |
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|
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spin_lock_bh(&priv->sta_lock); |
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|
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switch (add_sta_resp->status) { |
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case ADD_STA_SUCCESS_MSK: |
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IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n"); |
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break; |
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case ADD_STA_NO_ROOM_IN_TABLE: |
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IWL_ERR(priv, "Adding station failed, no room in table.\n"); |
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break; |
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case ADD_STA_NO_BLOCK_ACK_RESOURCE: |
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IWL_ERR(priv, |
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"Adding station failed, no block ack resource.\n"); |
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break; |
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case ADD_STA_MODIFY_NON_EXIST_STA: |
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IWL_ERR(priv, "Attempting to modify non-existing station\n"); |
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break; |
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default: |
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IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n", |
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add_sta_resp->status); |
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break; |
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} |
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|
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spin_unlock_bh(&priv->sta_lock); |
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} |
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|
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void iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb) |
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{ |
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struct iwl_rx_packet *pkt = rxb_addr(rxb); |
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|
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iwl_process_add_sta_resp(priv, pkt); |
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} |
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|
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int iwl_send_add_sta(struct iwl_priv *priv, |
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struct iwl_addsta_cmd *sta, u8 flags) |
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{ |
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int ret = 0; |
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struct iwl_host_cmd cmd = { |
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.id = REPLY_ADD_STA, |
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.flags = flags, |
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.data = { sta, }, |
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.len = { sizeof(*sta), }, |
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}; |
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u8 sta_id __maybe_unused = sta->sta.sta_id; |
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struct iwl_rx_packet *pkt; |
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struct iwl_add_sta_resp *add_sta_resp; |
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|
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IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n", |
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sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : ""); |
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|
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if (!(flags & CMD_ASYNC)) { |
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cmd.flags |= CMD_WANT_SKB; |
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might_sleep(); |
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} |
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|
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ret = iwl_dvm_send_cmd(priv, &cmd); |
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|
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if (ret || (flags & CMD_ASYNC)) |
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return ret; |
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pkt = cmd.resp_pkt; |
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add_sta_resp = (void *)pkt->data; |
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|
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/* debug messages are printed in the handler */ |
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if (add_sta_resp->status == ADD_STA_SUCCESS_MSK) { |
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spin_lock_bh(&priv->sta_lock); |
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ret = iwl_sta_ucode_activate(priv, sta_id); |
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spin_unlock_bh(&priv->sta_lock); |
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} else { |
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ret = -EIO; |
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} |
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iwl_free_resp(&cmd); |
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|
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return ret; |
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} |
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|
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bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, |
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struct iwl_rxon_context *ctx, |
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struct ieee80211_sta *sta) |
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{ |
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if (!ctx->ht.enabled || !ctx->ht.is_40mhz) |
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return false; |
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|
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#ifdef CONFIG_IWLWIFI_DEBUGFS |
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if (priv->disable_ht40) |
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return false; |
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#endif |
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|
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/* special case for RXON */ |
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if (!sta) |
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return true; |
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|
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return sta->bandwidth >= IEEE80211_STA_RX_BW_40; |
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} |
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|
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static void iwl_sta_calc_ht_flags(struct iwl_priv *priv, |
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struct ieee80211_sta *sta, |
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struct iwl_rxon_context *ctx, |
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__le32 *flags, __le32 *mask) |
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{ |
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struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; |
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|
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*mask = STA_FLG_RTS_MIMO_PROT_MSK | |
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STA_FLG_MIMO_DIS_MSK | |
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STA_FLG_HT40_EN_MSK | |
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STA_FLG_MAX_AGG_SIZE_MSK | |
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STA_FLG_AGG_MPDU_DENSITY_MSK; |
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*flags = 0; |
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|
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if (!sta || !sta_ht_inf->ht_supported) |
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return; |
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|
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IWL_DEBUG_INFO(priv, "STA %pM SM PS mode: %s\n", |
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sta->addr, |
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(sta->smps_mode == IEEE80211_SMPS_STATIC) ? |
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"static" : |
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(sta->smps_mode == IEEE80211_SMPS_DYNAMIC) ? |
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"dynamic" : "disabled"); |
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|
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switch (sta->smps_mode) { |
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case IEEE80211_SMPS_STATIC: |
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*flags |= STA_FLG_MIMO_DIS_MSK; |
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break; |
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case IEEE80211_SMPS_DYNAMIC: |
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*flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
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break; |
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case IEEE80211_SMPS_OFF: |
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break; |
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default: |
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IWL_WARN(priv, "Invalid MIMO PS mode %d\n", sta->smps_mode); |
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break; |
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} |
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|
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*flags |= cpu_to_le32( |
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(u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); |
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|
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*flags |= cpu_to_le32( |
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(u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); |
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|
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if (iwl_is_ht40_tx_allowed(priv, ctx, sta)) |
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*flags |= STA_FLG_HT40_EN_MSK; |
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} |
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|
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int iwl_sta_update_ht(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
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struct ieee80211_sta *sta) |
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{ |
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u8 sta_id = iwl_sta_id(sta); |
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__le32 flags, mask; |
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struct iwl_addsta_cmd cmd; |
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|
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if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) |
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return -EINVAL; |
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|
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iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); |
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|
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spin_lock_bh(&priv->sta_lock); |
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priv->stations[sta_id].sta.station_flags &= ~mask; |
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priv->stations[sta_id].sta.station_flags |= flags; |
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spin_unlock_bh(&priv->sta_lock); |
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|
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memset(&cmd, 0, sizeof(cmd)); |
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cmd.mode = STA_CONTROL_MODIFY_MSK; |
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cmd.station_flags_msk = mask; |
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cmd.station_flags = flags; |
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cmd.sta.sta_id = sta_id; |
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|
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return iwl_send_add_sta(priv, &cmd, 0); |
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} |
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|
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static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, |
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struct ieee80211_sta *sta, |
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struct iwl_rxon_context *ctx) |
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{ |
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__le32 flags, mask; |
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|
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iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); |
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|
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lockdep_assert_held(&priv->sta_lock); |
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priv->stations[index].sta.station_flags &= ~mask; |
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priv->stations[index].sta.station_flags |= flags; |
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} |
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|
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/* |
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* iwl_prep_station - Prepare station information for addition |
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* |
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* should be called with sta_lock held |
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*/ |
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u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
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const u8 *addr, bool is_ap, struct ieee80211_sta *sta) |
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{ |
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struct iwl_station_entry *station; |
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int i; |
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u8 sta_id = IWL_INVALID_STATION; |
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|
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if (is_ap) |
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sta_id = ctx->ap_sta_id; |
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else if (is_broadcast_ether_addr(addr)) |
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sta_id = ctx->bcast_sta_id; |
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else |
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for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) { |
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if (ether_addr_equal(priv->stations[i].sta.sta.addr, |
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addr)) { |
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sta_id = i; |
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break; |
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} |
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|
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if (!priv->stations[i].used && |
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sta_id == IWL_INVALID_STATION) |
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sta_id = i; |
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} |
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|
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/* |
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* These two conditions have the same outcome, but keep them |
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* separate |
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*/ |
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if (unlikely(sta_id == IWL_INVALID_STATION)) |
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return sta_id; |
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|
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/* |
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* uCode is not able to deal with multiple requests to add a |
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* station. Keep track if one is in progress so that we do not send |
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* another. |
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*/ |
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if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { |
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IWL_DEBUG_INFO(priv, "STA %d already in process of being " |
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"added.\n", sta_id); |
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return sta_id; |
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} |
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|
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if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && |
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(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && |
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ether_addr_equal(priv->stations[sta_id].sta.sta.addr, addr)) { |
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IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " |
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"adding again.\n", sta_id, addr); |
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return sta_id; |
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} |
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|
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station = &priv->stations[sta_id]; |
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station->used = IWL_STA_DRIVER_ACTIVE; |
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IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", |
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sta_id, addr); |
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priv->num_stations++; |
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|
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/* Set up the REPLY_ADD_STA command to send to device */ |
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memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); |
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memcpy(station->sta.sta.addr, addr, ETH_ALEN); |
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station->sta.mode = 0; |
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station->sta.sta.sta_id = sta_id; |
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station->sta.station_flags = ctx->station_flags; |
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station->ctxid = ctx->ctxid; |
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|
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if (sta) { |
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struct iwl_station_priv *sta_priv; |
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|
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sta_priv = (void *)sta->drv_priv; |
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sta_priv->ctx = ctx; |
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} |
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|
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/* |
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* OK to call unconditionally, since local stations (IBSS BSSID |
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* STA and broadcast STA) pass in a NULL sta, and mac80211 |
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* doesn't allow HT IBSS. |
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*/ |
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iwl_set_ht_add_station(priv, sta_id, sta, ctx); |
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|
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return sta_id; |
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|
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} |
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|
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#define STA_WAIT_TIMEOUT (HZ/2) |
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|
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/* |
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* iwl_add_station_common - |
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*/ |
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int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
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const u8 *addr, bool is_ap, |
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struct ieee80211_sta *sta, u8 *sta_id_r) |
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{ |
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int ret = 0; |
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u8 sta_id; |
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struct iwl_addsta_cmd sta_cmd; |
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|
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*sta_id_r = 0; |
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spin_lock_bh(&priv->sta_lock); |
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sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta); |
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if (sta_id == IWL_INVALID_STATION) { |
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IWL_ERR(priv, "Unable to prepare station %pM for addition\n", |
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addr); |
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spin_unlock_bh(&priv->sta_lock); |
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return -EINVAL; |
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} |
|
|
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/* |
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* uCode is not able to deal with multiple requests to add a |
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* station. Keep track if one is in progress so that we do not send |
|
* another. |
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*/ |
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if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { |
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IWL_DEBUG_INFO(priv, "STA %d already in process of being " |
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"added.\n", sta_id); |
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spin_unlock_bh(&priv->sta_lock); |
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return -EEXIST; |
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} |
|
|
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if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && |
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(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { |
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IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " |
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"adding again.\n", sta_id, addr); |
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spin_unlock_bh(&priv->sta_lock); |
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return -EEXIST; |
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} |
|
|
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priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS; |
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memcpy(&sta_cmd, &priv->stations[sta_id].sta, |
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sizeof(struct iwl_addsta_cmd)); |
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spin_unlock_bh(&priv->sta_lock); |
|
|
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/* Add station to device's station table */ |
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ret = iwl_send_add_sta(priv, &sta_cmd, 0); |
|
if (ret) { |
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spin_lock_bh(&priv->sta_lock); |
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IWL_ERR(priv, "Adding station %pM failed.\n", |
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priv->stations[sta_id].sta.sta.addr); |
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priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
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priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
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spin_unlock_bh(&priv->sta_lock); |
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} |
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*sta_id_r = sta_id; |
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return ret; |
|
} |
|
|
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/* |
|
* iwl_sta_ucode_deactivate - deactivate ucode status for a station |
|
*/ |
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static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) |
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{ |
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lockdep_assert_held(&priv->sta_lock); |
|
|
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/* Ucode must be active and driver must be non active */ |
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if ((priv->stations[sta_id].used & |
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(IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != |
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IWL_STA_UCODE_ACTIVE) |
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IWL_ERR(priv, "removed non active STA %u\n", sta_id); |
|
|
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priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; |
|
|
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memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); |
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IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); |
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} |
|
|
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static int iwl_send_remove_station(struct iwl_priv *priv, |
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const u8 *addr, int sta_id, |
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bool temporary) |
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{ |
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struct iwl_rx_packet *pkt; |
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int ret; |
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struct iwl_rem_sta_cmd rm_sta_cmd; |
|
struct iwl_rem_sta_resp *rem_sta_resp; |
|
|
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struct iwl_host_cmd cmd = { |
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.id = REPLY_REMOVE_STA, |
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.len = { sizeof(struct iwl_rem_sta_cmd), }, |
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.data = { &rm_sta_cmd, }, |
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}; |
|
|
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memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); |
|
rm_sta_cmd.num_sta = 1; |
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memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); |
|
|
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cmd.flags |= CMD_WANT_SKB; |
|
|
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ret = iwl_dvm_send_cmd(priv, &cmd); |
|
|
|
if (ret) |
|
return ret; |
|
|
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pkt = cmd.resp_pkt; |
|
rem_sta_resp = (void *)pkt->data; |
|
|
|
switch (rem_sta_resp->status) { |
|
case REM_STA_SUCCESS_MSK: |
|
if (!temporary) { |
|
spin_lock_bh(&priv->sta_lock); |
|
iwl_sta_ucode_deactivate(priv, sta_id); |
|
spin_unlock_bh(&priv->sta_lock); |
|
} |
|
IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); |
|
break; |
|
default: |
|
ret = -EIO; |
|
IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); |
|
break; |
|
} |
|
|
|
iwl_free_resp(&cmd); |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* iwl_remove_station - Remove driver's knowledge of station. |
|
*/ |
|
int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, |
|
const u8 *addr) |
|
{ |
|
u8 tid; |
|
|
|
if (!iwl_is_ready(priv)) { |
|
IWL_DEBUG_INFO(priv, |
|
"Unable to remove station %pM, device not ready.\n", |
|
addr); |
|
/* |
|
* It is typical for stations to be removed when we are |
|
* going down. Return success since device will be down |
|
* soon anyway |
|
*/ |
|
return 0; |
|
} |
|
|
|
IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", |
|
sta_id, addr); |
|
|
|
if (WARN_ON(sta_id == IWL_INVALID_STATION)) |
|
return -EINVAL; |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
|
|
if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
|
IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", |
|
addr); |
|
goto out_err; |
|
} |
|
|
|
if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { |
|
IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", |
|
addr); |
|
goto out_err; |
|
} |
|
|
|
if (priv->stations[sta_id].used & IWL_STA_LOCAL) { |
|
kfree(priv->stations[sta_id].lq); |
|
priv->stations[sta_id].lq = NULL; |
|
} |
|
|
|
for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) |
|
memset(&priv->tid_data[sta_id][tid], 0, |
|
sizeof(priv->tid_data[sta_id][tid])); |
|
|
|
priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
|
|
|
priv->num_stations--; |
|
|
|
if (WARN_ON(priv->num_stations < 0)) |
|
priv->num_stations = 0; |
|
|
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
return iwl_send_remove_station(priv, addr, sta_id, false); |
|
out_err: |
|
spin_unlock_bh(&priv->sta_lock); |
|
return -EINVAL; |
|
} |
|
|
|
void iwl_deactivate_station(struct iwl_priv *priv, const u8 sta_id, |
|
const u8 *addr) |
|
{ |
|
u8 tid; |
|
|
|
if (!iwl_is_ready(priv)) { |
|
IWL_DEBUG_INFO(priv, |
|
"Unable to remove station %pM, device not ready.\n", |
|
addr); |
|
return; |
|
} |
|
|
|
IWL_DEBUG_ASSOC(priv, "Deactivating STA: %pM (%d)\n", addr, sta_id); |
|
|
|
if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) |
|
return; |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
|
|
WARN_ON_ONCE(!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)); |
|
|
|
for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) |
|
memset(&priv->tid_data[sta_id][tid], 0, |
|
sizeof(priv->tid_data[sta_id][tid])); |
|
|
|
priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
|
priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
|
|
|
priv->num_stations--; |
|
|
|
if (WARN_ON_ONCE(priv->num_stations < 0)) |
|
priv->num_stations = 0; |
|
|
|
spin_unlock_bh(&priv->sta_lock); |
|
} |
|
|
|
static void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
|
u8 sta_id, struct iwl_link_quality_cmd *link_cmd) |
|
{ |
|
int i, r; |
|
u32 rate_flags = 0; |
|
__le32 rate_n_flags; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
memset(link_cmd, 0, sizeof(*link_cmd)); |
|
|
|
/* Set up the rate scaling to start at selected rate, fall back |
|
* all the way down to 1M in IEEE order, and then spin on 1M */ |
|
if (priv->band == NL80211_BAND_5GHZ) |
|
r = IWL_RATE_6M_INDEX; |
|
else if (ctx && ctx->vif && ctx->vif->p2p) |
|
r = IWL_RATE_6M_INDEX; |
|
else |
|
r = IWL_RATE_1M_INDEX; |
|
|
|
if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) |
|
rate_flags |= RATE_MCS_CCK_MSK; |
|
|
|
rate_flags |= first_antenna(priv->nvm_data->valid_tx_ant) << |
|
RATE_MCS_ANT_POS; |
|
rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); |
|
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) |
|
link_cmd->rs_table[i].rate_n_flags = rate_n_flags; |
|
|
|
link_cmd->general_params.single_stream_ant_msk = |
|
first_antenna(priv->nvm_data->valid_tx_ant); |
|
|
|
link_cmd->general_params.dual_stream_ant_msk = |
|
priv->nvm_data->valid_tx_ant & |
|
~first_antenna(priv->nvm_data->valid_tx_ant); |
|
if (!link_cmd->general_params.dual_stream_ant_msk) { |
|
link_cmd->general_params.dual_stream_ant_msk = ANT_AB; |
|
} else if (num_of_ant(priv->nvm_data->valid_tx_ant) == 2) { |
|
link_cmd->general_params.dual_stream_ant_msk = |
|
priv->nvm_data->valid_tx_ant; |
|
} |
|
|
|
link_cmd->agg_params.agg_dis_start_th = |
|
LINK_QUAL_AGG_DISABLE_START_DEF; |
|
link_cmd->agg_params.agg_time_limit = |
|
cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); |
|
|
|
link_cmd->sta_id = sta_id; |
|
} |
|
|
|
/* |
|
* iwl_clear_ucode_stations - clear ucode station table bits |
|
* |
|
* This function clears all the bits in the driver indicating |
|
* which stations are active in the ucode. Call when something |
|
* other than explicit station management would cause this in |
|
* the ucode, e.g. unassociated RXON. |
|
*/ |
|
void iwl_clear_ucode_stations(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx) |
|
{ |
|
int i; |
|
bool cleared = false; |
|
|
|
IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
|
if (ctx && ctx->ctxid != priv->stations[i].ctxid) |
|
continue; |
|
|
|
if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { |
|
IWL_DEBUG_INFO(priv, |
|
"Clearing ucode active for station %d\n", i); |
|
priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; |
|
cleared = true; |
|
} |
|
} |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
if (!cleared) |
|
IWL_DEBUG_INFO(priv, |
|
"No active stations found to be cleared\n"); |
|
} |
|
|
|
/* |
|
* iwl_restore_stations() - Restore driver known stations to device |
|
* |
|
* All stations considered active by driver, but not present in ucode, is |
|
* restored. |
|
* |
|
* Function sleeps. |
|
*/ |
|
void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
|
{ |
|
struct iwl_addsta_cmd sta_cmd; |
|
static const struct iwl_link_quality_cmd zero_lq = {}; |
|
struct iwl_link_quality_cmd lq; |
|
int i; |
|
bool found = false; |
|
int ret; |
|
bool send_lq; |
|
|
|
if (!iwl_is_ready(priv)) { |
|
IWL_DEBUG_INFO(priv, |
|
"Not ready yet, not restoring any stations.\n"); |
|
return; |
|
} |
|
|
|
IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); |
|
spin_lock_bh(&priv->sta_lock); |
|
for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
|
if (ctx->ctxid != priv->stations[i].ctxid) |
|
continue; |
|
if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && |
|
!(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { |
|
IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", |
|
priv->stations[i].sta.sta.addr); |
|
priv->stations[i].sta.mode = 0; |
|
priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; |
|
found = true; |
|
} |
|
} |
|
|
|
for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
|
if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { |
|
memcpy(&sta_cmd, &priv->stations[i].sta, |
|
sizeof(struct iwl_addsta_cmd)); |
|
send_lq = false; |
|
if (priv->stations[i].lq) { |
|
if (priv->wowlan) |
|
iwl_sta_fill_lq(priv, ctx, i, &lq); |
|
else |
|
memcpy(&lq, priv->stations[i].lq, |
|
sizeof(struct iwl_link_quality_cmd)); |
|
|
|
if (memcmp(&lq, &zero_lq, sizeof(lq))) |
|
send_lq = true; |
|
} |
|
spin_unlock_bh(&priv->sta_lock); |
|
ret = iwl_send_add_sta(priv, &sta_cmd, 0); |
|
if (ret) { |
|
spin_lock_bh(&priv->sta_lock); |
|
IWL_ERR(priv, "Adding station %pM failed.\n", |
|
priv->stations[i].sta.sta.addr); |
|
priv->stations[i].used &= |
|
~IWL_STA_DRIVER_ACTIVE; |
|
priv->stations[i].used &= |
|
~IWL_STA_UCODE_INPROGRESS; |
|
continue; |
|
} |
|
/* |
|
* Rate scaling has already been initialized, send |
|
* current LQ command |
|
*/ |
|
if (send_lq) |
|
iwl_send_lq_cmd(priv, ctx, &lq, 0, true); |
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
|
} |
|
} |
|
|
|
spin_unlock_bh(&priv->sta_lock); |
|
if (!found) |
|
IWL_DEBUG_INFO(priv, "Restoring all known stations .... " |
|
"no stations to be restored.\n"); |
|
else |
|
IWL_DEBUG_INFO(priv, "Restoring all known stations .... " |
|
"complete.\n"); |
|
} |
|
|
|
int iwl_get_free_ucode_key_offset(struct iwl_priv *priv) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < priv->sta_key_max_num; i++) |
|
if (!test_and_set_bit(i, &priv->ucode_key_table)) |
|
return i; |
|
|
|
return WEP_INVALID_OFFSET; |
|
} |
|
|
|
void iwl_dealloc_bcast_stations(struct iwl_priv *priv) |
|
{ |
|
int i; |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
|
if (!(priv->stations[i].used & IWL_STA_BCAST)) |
|
continue; |
|
|
|
priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; |
|
priv->num_stations--; |
|
if (WARN_ON(priv->num_stations < 0)) |
|
priv->num_stations = 0; |
|
kfree(priv->stations[i].lq); |
|
priv->stations[i].lq = NULL; |
|
} |
|
spin_unlock_bh(&priv->sta_lock); |
|
} |
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG |
|
static void iwl_dump_lq_cmd(struct iwl_priv *priv, |
|
struct iwl_link_quality_cmd *lq) |
|
{ |
|
int i; |
|
IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); |
|
IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", |
|
lq->general_params.single_stream_ant_msk, |
|
lq->general_params.dual_stream_ant_msk); |
|
|
|
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) |
|
IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", |
|
i, lq->rs_table[i].rate_n_flags); |
|
} |
|
#else |
|
static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, |
|
struct iwl_link_quality_cmd *lq) |
|
{ |
|
} |
|
#endif |
|
|
|
/* |
|
* is_lq_table_valid() - Test one aspect of LQ cmd for validity |
|
* |
|
* It sometimes happens when a HT rate has been in use and we |
|
* loose connectivity with AP then mac80211 will first tell us that the |
|
* current channel is not HT anymore before removing the station. In such a |
|
* scenario the RXON flags will be updated to indicate we are not |
|
* communicating HT anymore, but the LQ command may still contain HT rates. |
|
* Test for this to prevent driver from sending LQ command between the time |
|
* RXON flags are updated and when LQ command is updated. |
|
*/ |
|
static bool is_lq_table_valid(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx, |
|
struct iwl_link_quality_cmd *lq) |
|
{ |
|
int i; |
|
|
|
if (ctx->ht.enabled) |
|
return true; |
|
|
|
IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", |
|
ctx->active.channel); |
|
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
|
if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & |
|
RATE_MCS_HT_MSK) { |
|
IWL_DEBUG_INFO(priv, |
|
"index %d of LQ expects HT channel\n", |
|
i); |
|
return false; |
|
} |
|
} |
|
return true; |
|
} |
|
|
|
/* |
|
* iwl_send_lq_cmd() - Send link quality command |
|
* @init: This command is sent as part of station initialization right |
|
* after station has been added. |
|
* |
|
* The link quality command is sent as the last step of station creation. |
|
* This is the special case in which init is set and we call a callback in |
|
* this case to clear the state indicating that station creation is in |
|
* progress. |
|
*/ |
|
int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
|
struct iwl_link_quality_cmd *lq, u8 flags, bool init) |
|
{ |
|
int ret = 0; |
|
struct iwl_host_cmd cmd = { |
|
.id = REPLY_TX_LINK_QUALITY_CMD, |
|
.len = { sizeof(struct iwl_link_quality_cmd), }, |
|
.flags = flags, |
|
.data = { lq, }, |
|
}; |
|
|
|
if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) |
|
return -EINVAL; |
|
|
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
|
spin_unlock_bh(&priv->sta_lock); |
|
return -EINVAL; |
|
} |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
iwl_dump_lq_cmd(priv, lq); |
|
if (WARN_ON(init && (cmd.flags & CMD_ASYNC))) |
|
return -EINVAL; |
|
|
|
if (is_lq_table_valid(priv, ctx, lq)) |
|
ret = iwl_dvm_send_cmd(priv, &cmd); |
|
else |
|
ret = -EINVAL; |
|
|
|
if (cmd.flags & CMD_ASYNC) |
|
return ret; |
|
|
|
if (init) { |
|
IWL_DEBUG_INFO(priv, "init LQ command complete, " |
|
"clearing sta addition status for sta %d\n", |
|
lq->sta_id); |
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
|
spin_unlock_bh(&priv->sta_lock); |
|
} |
|
return ret; |
|
} |
|
|
|
|
|
static struct iwl_link_quality_cmd * |
|
iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
|
u8 sta_id) |
|
{ |
|
struct iwl_link_quality_cmd *link_cmd; |
|
|
|
link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); |
|
if (!link_cmd) { |
|
IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); |
|
return NULL; |
|
} |
|
|
|
iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd); |
|
|
|
return link_cmd; |
|
} |
|
|
|
/* |
|
* iwlagn_add_bssid_station - Add the special IBSS BSSID station |
|
* |
|
* Function sleeps. |
|
*/ |
|
int iwlagn_add_bssid_station(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx, |
|
const u8 *addr, u8 *sta_id_r) |
|
{ |
|
int ret; |
|
u8 sta_id; |
|
struct iwl_link_quality_cmd *link_cmd; |
|
|
|
if (sta_id_r) |
|
*sta_id_r = IWL_INVALID_STATION; |
|
|
|
ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); |
|
if (ret) { |
|
IWL_ERR(priv, "Unable to add station %pM\n", addr); |
|
return ret; |
|
} |
|
|
|
if (sta_id_r) |
|
*sta_id_r = sta_id; |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[sta_id].used |= IWL_STA_LOCAL; |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
/* Set up default rate scaling table in device's station table */ |
|
link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
|
if (!link_cmd) { |
|
IWL_ERR(priv, |
|
"Unable to initialize rate scaling for station %pM.\n", |
|
addr); |
|
return -ENOMEM; |
|
} |
|
|
|
ret = iwl_send_lq_cmd(priv, ctx, link_cmd, 0, true); |
|
if (ret) |
|
IWL_ERR(priv, "Link quality command failed (%d)\n", ret); |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[sta_id].lq = link_cmd; |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* static WEP keys |
|
* |
|
* For each context, the device has a table of 4 static WEP keys |
|
* (one for each key index) that is updated with the following |
|
* commands. |
|
*/ |
|
|
|
static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx, |
|
bool send_if_empty) |
|
{ |
|
int i, not_empty = 0; |
|
u8 buff[sizeof(struct iwl_wep_cmd) + |
|
sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; |
|
struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; |
|
size_t cmd_size = sizeof(struct iwl_wep_cmd); |
|
struct iwl_host_cmd cmd = { |
|
.id = ctx->wep_key_cmd, |
|
.data = { wep_cmd, }, |
|
}; |
|
|
|
might_sleep(); |
|
|
|
memset(wep_cmd, 0, cmd_size + |
|
(sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); |
|
|
|
for (i = 0; i < WEP_KEYS_MAX ; i++) { |
|
wep_cmd->key[i].key_index = i; |
|
if (ctx->wep_keys[i].key_size) { |
|
wep_cmd->key[i].key_offset = i; |
|
not_empty = 1; |
|
} else { |
|
wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; |
|
} |
|
|
|
wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; |
|
memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, |
|
ctx->wep_keys[i].key_size); |
|
} |
|
|
|
wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; |
|
wep_cmd->num_keys = WEP_KEYS_MAX; |
|
|
|
cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; |
|
|
|
cmd.len[0] = cmd_size; |
|
|
|
if (not_empty || send_if_empty) |
|
return iwl_dvm_send_cmd(priv, &cmd); |
|
else |
|
return 0; |
|
} |
|
|
|
int iwl_restore_default_wep_keys(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx) |
|
{ |
|
lockdep_assert_held(&priv->mutex); |
|
|
|
return iwl_send_static_wepkey_cmd(priv, ctx, false); |
|
} |
|
|
|
int iwl_remove_default_wep_key(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx, |
|
struct ieee80211_key_conf *keyconf) |
|
{ |
|
int ret; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", |
|
keyconf->keyidx); |
|
|
|
memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); |
|
if (iwl_is_rfkill(priv)) { |
|
IWL_DEBUG_WEP(priv, |
|
"Not sending REPLY_WEPKEY command due to RFKILL.\n"); |
|
/* but keys in device are clear anyway so return success */ |
|
return 0; |
|
} |
|
ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); |
|
IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", |
|
keyconf->keyidx, ret); |
|
|
|
return ret; |
|
} |
|
|
|
int iwl_set_default_wep_key(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx, |
|
struct ieee80211_key_conf *keyconf) |
|
{ |
|
int ret; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
if (keyconf->keylen != WEP_KEY_LEN_128 && |
|
keyconf->keylen != WEP_KEY_LEN_64) { |
|
IWL_DEBUG_WEP(priv, |
|
"Bad WEP key length %d\n", keyconf->keylen); |
|
return -EINVAL; |
|
} |
|
|
|
keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT; |
|
|
|
ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; |
|
memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, |
|
keyconf->keylen); |
|
|
|
ret = iwl_send_static_wepkey_cmd(priv, ctx, false); |
|
IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", |
|
keyconf->keylen, keyconf->keyidx, ret); |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* dynamic (per-station) keys |
|
* |
|
* The dynamic keys are a little more complicated. The device has |
|
* a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys. |
|
* These are linked to stations by a table that contains an index |
|
* into the key table for each station/key index/{mcast,unicast}, |
|
* i.e. it's basically an array of pointers like this: |
|
* key_offset_t key_mapping[NUM_STATIONS][4][2]; |
|
* (it really works differently, but you can think of it as such) |
|
* |
|
* The key uploading and linking happens in the same command, the |
|
* add station command with STA_MODIFY_KEY_MASK. |
|
*/ |
|
|
|
static u8 iwlagn_key_sta_id(struct iwl_priv *priv, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
|
|
|
if (sta) |
|
return iwl_sta_id(sta); |
|
|
|
/* |
|
* The device expects GTKs for station interfaces to be |
|
* installed as GTKs for the AP station. If we have no |
|
* station ID, then use the ap_sta_id in that case. |
|
*/ |
|
if (vif->type == NL80211_IFTYPE_STATION && vif_priv->ctx) |
|
return vif_priv->ctx->ap_sta_id; |
|
|
|
return IWL_INVALID_STATION; |
|
} |
|
|
|
static int iwlagn_send_sta_key(struct iwl_priv *priv, |
|
struct ieee80211_key_conf *keyconf, |
|
u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, |
|
u32 cmd_flags) |
|
{ |
|
__le16 key_flags; |
|
struct iwl_addsta_cmd sta_cmd; |
|
int i; |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
|
key_flags |= STA_KEY_FLG_MAP_KEY_MSK; |
|
|
|
switch (keyconf->cipher) { |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
key_flags |= STA_KEY_FLG_CCMP; |
|
memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); |
|
break; |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
key_flags |= STA_KEY_FLG_TKIP; |
|
sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32; |
|
for (i = 0; i < 5; i++) |
|
sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
|
memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); |
|
break; |
|
case WLAN_CIPHER_SUITE_WEP104: |
|
key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; |
|
fallthrough; |
|
case WLAN_CIPHER_SUITE_WEP40: |
|
key_flags |= STA_KEY_FLG_WEP; |
|
memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen); |
|
break; |
|
default: |
|
WARN_ON(1); |
|
return -EINVAL; |
|
} |
|
|
|
if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) |
|
key_flags |= STA_KEY_MULTICAST_MSK; |
|
|
|
/* key pointer (offset) */ |
|
sta_cmd.key.key_offset = keyconf->hw_key_idx; |
|
|
|
sta_cmd.key.key_flags = key_flags; |
|
sta_cmd.mode = STA_CONTROL_MODIFY_MSK; |
|
sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; |
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, cmd_flags); |
|
} |
|
|
|
void iwl_update_tkip_key(struct iwl_priv *priv, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_key_conf *keyconf, |
|
struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) |
|
{ |
|
u8 sta_id = iwlagn_key_sta_id(priv, vif, sta); |
|
|
|
if (sta_id == IWL_INVALID_STATION) |
|
return; |
|
|
|
if (iwl_scan_cancel(priv)) { |
|
/* cancel scan failed, just live w/ bad key and rely |
|
briefly on SW decryption */ |
|
return; |
|
} |
|
|
|
iwlagn_send_sta_key(priv, keyconf, sta_id, |
|
iv32, phase1key, CMD_ASYNC); |
|
} |
|
|
|
int iwl_remove_dynamic_key(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx, |
|
struct ieee80211_key_conf *keyconf, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_addsta_cmd sta_cmd; |
|
u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
|
__le16 key_flags; |
|
|
|
/* if station isn't there, neither is the key */ |
|
if (sta_id == IWL_INVALID_STATION) |
|
return -ENOENT; |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
|
if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) |
|
sta_id = IWL_INVALID_STATION; |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
if (sta_id == IWL_INVALID_STATION) |
|
return 0; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
ctx->key_mapping_keys--; |
|
|
|
IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
|
keyconf->keyidx, sta_id); |
|
|
|
if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table)) |
|
IWL_ERR(priv, "offset %d not used in uCode key table.\n", |
|
keyconf->hw_key_idx); |
|
|
|
key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
|
key_flags |= STA_KEY_FLG_MAP_KEY_MSK | STA_KEY_FLG_NO_ENC | |
|
STA_KEY_FLG_INVALID; |
|
|
|
if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) |
|
key_flags |= STA_KEY_MULTICAST_MSK; |
|
|
|
sta_cmd.key.key_flags = key_flags; |
|
sta_cmd.key.key_offset = keyconf->hw_key_idx; |
|
sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; |
|
sta_cmd.mode = STA_CONTROL_MODIFY_MSK; |
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, 0); |
|
} |
|
|
|
int iwl_set_dynamic_key(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx, |
|
struct ieee80211_key_conf *keyconf, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct ieee80211_key_seq seq; |
|
u16 p1k[5]; |
|
int ret; |
|
u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
|
const u8 *addr; |
|
|
|
if (sta_id == IWL_INVALID_STATION) |
|
return -EINVAL; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv); |
|
if (keyconf->hw_key_idx == WEP_INVALID_OFFSET) |
|
return -ENOSPC; |
|
|
|
ctx->key_mapping_keys++; |
|
|
|
switch (keyconf->cipher) { |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
if (sta) |
|
addr = sta->addr; |
|
else /* station mode case only */ |
|
addr = ctx->active.bssid_addr; |
|
|
|
/* pre-fill phase 1 key into device cache */ |
|
ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
|
ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); |
|
ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
|
seq.tkip.iv32, p1k, 0); |
|
break; |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
case WLAN_CIPHER_SUITE_WEP40: |
|
case WLAN_CIPHER_SUITE_WEP104: |
|
ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
|
0, NULL, 0); |
|
break; |
|
default: |
|
IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher); |
|
ret = -EINVAL; |
|
} |
|
|
|
if (ret) { |
|
ctx->key_mapping_keys--; |
|
clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table); |
|
} |
|
|
|
IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", |
|
keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
|
sta ? sta->addr : NULL, ret); |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* iwlagn_alloc_bcast_station - add broadcast station into driver's station table. |
|
* |
|
* This adds the broadcast station into the driver's station table |
|
* and marks it driver active, so that it will be restored to the |
|
* device at the next best time. |
|
*/ |
|
int iwlagn_alloc_bcast_station(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx) |
|
{ |
|
struct iwl_link_quality_cmd *link_cmd; |
|
u8 sta_id; |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
|
if (sta_id == IWL_INVALID_STATION) { |
|
IWL_ERR(priv, "Unable to prepare broadcast station\n"); |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
return -EINVAL; |
|
} |
|
|
|
priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; |
|
priv->stations[sta_id].used |= IWL_STA_BCAST; |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
|
if (!link_cmd) { |
|
IWL_ERR(priv, |
|
"Unable to initialize rate scaling for bcast station.\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[sta_id].lq = link_cmd; |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* iwl_update_bcast_station - update broadcast station's LQ command |
|
* |
|
* Only used by iwlagn. Placed here to have all bcast station management |
|
* code together. |
|
*/ |
|
int iwl_update_bcast_station(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx) |
|
{ |
|
struct iwl_link_quality_cmd *link_cmd; |
|
u8 sta_id = ctx->bcast_sta_id; |
|
|
|
link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
|
if (!link_cmd) { |
|
IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
if (priv->stations[sta_id].lq) |
|
kfree(priv->stations[sta_id].lq); |
|
else |
|
IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); |
|
priv->stations[sta_id].lq = link_cmd; |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
return 0; |
|
} |
|
|
|
int iwl_update_bcast_stations(struct iwl_priv *priv) |
|
{ |
|
struct iwl_rxon_context *ctx; |
|
int ret = 0; |
|
|
|
for_each_context(priv, ctx) { |
|
ret = iwl_update_bcast_station(priv, ctx); |
|
if (ret) |
|
break; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table |
|
*/ |
|
int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) |
|
{ |
|
struct iwl_addsta_cmd sta_cmd; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
/* Remove "disable" flag, to enable Tx for this TID */ |
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
|
priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); |
|
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, 0); |
|
} |
|
|
|
int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, |
|
int tid, u16 ssn) |
|
{ |
|
int sta_id; |
|
struct iwl_addsta_cmd sta_cmd; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
sta_id = iwl_sta_id(sta); |
|
if (sta_id == IWL_INVALID_STATION) |
|
return -ENXIO; |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[sta_id].sta.station_flags_msk = 0; |
|
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; |
|
priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; |
|
priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); |
|
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, 0); |
|
} |
|
|
|
int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, |
|
int tid) |
|
{ |
|
int sta_id; |
|
struct iwl_addsta_cmd sta_cmd; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
sta_id = iwl_sta_id(sta); |
|
if (sta_id == IWL_INVALID_STATION) { |
|
IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); |
|
return -ENXIO; |
|
} |
|
|
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[sta_id].sta.station_flags_msk = 0; |
|
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; |
|
priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; |
|
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
|
spin_unlock_bh(&priv->sta_lock); |
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, 0); |
|
} |
|
|
|
|
|
|
|
void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) |
|
{ |
|
struct iwl_addsta_cmd cmd = { |
|
.mode = STA_CONTROL_MODIFY_MSK, |
|
.station_flags = STA_FLG_PWR_SAVE_MSK, |
|
.station_flags_msk = STA_FLG_PWR_SAVE_MSK, |
|
.sta.sta_id = sta_id, |
|
.sta.modify_mask = STA_MODIFY_SLEEP_TX_COUNT_MSK, |
|
.sleep_tx_count = cpu_to_le16(cnt), |
|
}; |
|
|
|
iwl_send_add_sta(priv, &cmd, CMD_ASYNC); |
|
}
|
|
|