iwlwifi-objs += iwl-agn-tt.o iwl-agn-sta.o
iwlwifi-objs += iwl-core.o iwl-eeprom.o iwl-power.o
-iwlwifi-objs += iwl-rx.o iwl-sta.o
-iwlwifi-objs += iwl-scan.o iwl-led.o
+iwlwifi-objs += iwl-rx.o iwl-scan.o iwl-led.o
iwlwifi-objs += iwl-agn-rxon.o
iwlwifi-objs += iwl-5000.o
iwlwifi-objs += iwl-6000.o
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
-#include "iwl-sta.h"
#include "iwl-agn.h"
#include "iwl-helpers.h"
#include "iwl-agn-hw.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
-#include "iwl-sta.h"
#include "iwl-agn.h"
#include "iwl-helpers.h"
#include "iwl-agn-hw.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
-#include "iwl-sta.h"
#include "iwl-helpers.h"
#include "iwl-agn.h"
#include "iwl-agn-hw.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
-#include "iwl-sta.h"
#include "iwl-agn.h"
#include "iwl-helpers.h"
#include "iwl-agn-hw.h"
#include "iwl-helpers.h"
#include "iwl-agn-hw.h"
#include "iwl-agn.h"
-#include "iwl-sta.h"
#include "iwl-trans.h"
#include "iwl-shared.h"
#include <linux/workqueue.h>
#include "iwl-dev.h"
-#include "iwl-sta.h"
#include "iwl-core.h"
#include "iwl-agn.h"
#include "iwl-dev.h"
#include "iwl-agn.h"
-#include "iwl-sta.h"
#include "iwl-core.h"
#include "iwl-agn-calib.h"
#include "iwl-helpers.h"
#include "iwl-dev.h"
#include "iwl-core.h"
-#include "iwl-sta.h"
#include "iwl-agn.h"
#include "iwl-trans.h"
+/* priv->shrd->sta_lock must be held */
+static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
+{
+
+ if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
+ IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u "
+ "addr %pM\n",
+ sta_id, priv->stations[sta_id].sta.sta.addr);
+
+ if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
+ IWL_DEBUG_ASSOC(priv,
+ "STA id %u addr %pM already present in uCode "
+ "(according to driver)\n",
+ sta_id, priv->stations[sta_id].sta.sta.addr);
+ } else {
+ priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
+ IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
+ sta_id, priv->stations[sta_id].sta.sta.addr);
+ }
+}
+
+static int iwl_process_add_sta_resp(struct iwl_priv *priv,
+ struct iwl_addsta_cmd *addsta,
+ struct iwl_rx_packet *pkt)
+{
+ u8 sta_id = addsta->sta.sta_id;
+ unsigned long flags;
+ int ret = -EIO;
+
+ if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
+ IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
+ pkt->hdr.flags);
+ return ret;
+ }
+
+ IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
+ sta_id);
+
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags);
+
+ switch (pkt->u.add_sta.status) {
+ case ADD_STA_SUCCESS_MSK:
+ IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
+ iwl_sta_ucode_activate(priv, sta_id);
+ ret = 0;
+ break;
+ case ADD_STA_NO_ROOM_IN_TABLE:
+ IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
+ sta_id);
+ break;
+ case ADD_STA_NO_BLOCK_ACK_RESOURCE:
+ IWL_ERR(priv, "Adding station %d failed, no block ack "
+ "resource.\n", sta_id);
+ break;
+ case ADD_STA_MODIFY_NON_EXIST_STA:
+ IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
+ sta_id);
+ break;
+ default:
+ IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
+ pkt->u.add_sta.status);
+ break;
+ }
+
+ IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
+ priv->stations[sta_id].sta.mode ==
+ STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
+ sta_id, priv->stations[sta_id].sta.sta.addr);
+
+ /*
+ * XXX: The MAC address in the command buffer is often changed from
+ * the original sent to the device. That is, the MAC address
+ * written to the command buffer often is not the same MAC address
+ * read from the command buffer when the command returns. This
+ * issue has not yet been resolved and this debugging is left to
+ * observe the problem.
+ */
+ IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
+ priv->stations[sta_id].sta.mode ==
+ STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
+ addsta->sta.addr);
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+
+ return ret;
+}
+
+int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
+ struct iwl_device_cmd *cmd)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_addsta_cmd *addsta =
+ (struct iwl_addsta_cmd *) cmd->payload;
+
+ return iwl_process_add_sta_resp(priv, addsta, pkt);
+}
+
+static u16 iwlagn_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
+{
+ u16 size = (u16)sizeof(struct iwl_addsta_cmd);
+ struct iwl_addsta_cmd *addsta = (struct iwl_addsta_cmd *)data;
+ memcpy(addsta, cmd, size);
+ /* resrved in 5000 */
+ addsta->rate_n_flags = cpu_to_le16(0);
+ return size;
+}
+
+int iwl_send_add_sta(struct iwl_priv *priv,
+ struct iwl_addsta_cmd *sta, u8 flags)
+{
+ int ret = 0;
+ u8 data[sizeof(*sta)];
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_ADD_STA,
+ .flags = flags,
+ .data = { data, },
+ };
+ u8 sta_id __maybe_unused = sta->sta.sta_id;
+
+ IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
+ sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
+
+ if (!(flags & CMD_ASYNC)) {
+ cmd.flags |= CMD_WANT_SKB;
+ might_sleep();
+ }
+
+ cmd.len[0] = iwlagn_build_addsta_hcmd(sta, data);
+ ret = iwl_trans_send_cmd(trans(priv), &cmd);
+
+ if (ret || (flags & CMD_ASYNC))
+ return ret;
+ /*else the command was successfully sent in SYNC mode, need to free
+ * the reply page */
+
+ iwl_free_pages(priv->shrd, cmd.reply_page);
+
+ if (cmd.handler_status)
+ IWL_ERR(priv, "%s - error in the CMD response %d", __func__,
+ cmd.handler_status);
+
+ return cmd.handler_status;
+}
+
+static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
+ struct ieee80211_sta *sta,
+ struct iwl_rxon_context *ctx)
+{
+ struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
+ __le32 sta_flags;
+ u8 mimo_ps_mode;
+
+ if (!sta || !sta_ht_inf->ht_supported)
+ goto done;
+
+ mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
+ IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
+ (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
+ "static" :
+ (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
+ "dynamic" : "disabled");
+
+ sta_flags = priv->stations[index].sta.station_flags;
+
+ sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
+
+ switch (mimo_ps_mode) {
+ case WLAN_HT_CAP_SM_PS_STATIC:
+ sta_flags |= STA_FLG_MIMO_DIS_MSK;
+ break;
+ case WLAN_HT_CAP_SM_PS_DYNAMIC:
+ sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
+ break;
+ case WLAN_HT_CAP_SM_PS_DISABLED:
+ break;
+ default:
+ IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
+ break;
+ }
+
+ sta_flags |= cpu_to_le32(
+ (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
+
+ sta_flags |= cpu_to_le32(
+ (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
+
+ if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
+ sta_flags |= STA_FLG_HT40_EN_MSK;
+ else
+ sta_flags &= ~STA_FLG_HT40_EN_MSK;
+
+ priv->stations[index].sta.station_flags = sta_flags;
+ done:
+ return;
+}
+
+/**
+ * iwl_prep_station - Prepare station information for addition
+ *
+ * should be called with sta_lock held
+ */
+u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
+ const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
+{
+ struct iwl_station_entry *station;
+ int i;
+ u8 sta_id = IWL_INVALID_STATION;
+
+ if (is_ap)
+ sta_id = ctx->ap_sta_id;
+ else if (is_broadcast_ether_addr(addr))
+ sta_id = ctx->bcast_sta_id;
+ else
+ for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) {
+ if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
+ addr)) {
+ sta_id = i;
+ break;
+ }
+
+ if (!priv->stations[i].used &&
+ sta_id == IWL_INVALID_STATION)
+ sta_id = i;
+ }
+
+ /*
+ * These two conditions have the same outcome, but keep them
+ * separate
+ */
+ if (unlikely(sta_id == IWL_INVALID_STATION))
+ return sta_id;
+
+ /*
+ * uCode is not able to deal with multiple requests to add a
+ * station. Keep track if one is in progress so that we do not send
+ * another.
+ */
+ if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
+ IWL_DEBUG_INFO(priv, "STA %d already in process of being "
+ "added.\n", sta_id);
+ return sta_id;
+ }
+
+ if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
+ (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
+ !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
+ IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
+ "adding again.\n", sta_id, addr);
+ return sta_id;
+ }
+
+ station = &priv->stations[sta_id];
+ station->used = IWL_STA_DRIVER_ACTIVE;
+ IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
+ sta_id, addr);
+ priv->num_stations++;
+
+ /* Set up the REPLY_ADD_STA command to send to device */
+ memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
+ memcpy(station->sta.sta.addr, addr, ETH_ALEN);
+ station->sta.mode = 0;
+ station->sta.sta.sta_id = sta_id;
+ station->sta.station_flags = ctx->station_flags;
+ station->ctxid = ctx->ctxid;
+
+ if (sta) {
+ struct iwl_station_priv *sta_priv;
+
+ sta_priv = (void *)sta->drv_priv;
+ sta_priv->ctx = ctx;
+ }
+
+ /*
+ * OK to call unconditionally, since local stations (IBSS BSSID
+ * STA and broadcast STA) pass in a NULL sta, and mac80211
+ * doesn't allow HT IBSS.
+ */
+ iwl_set_ht_add_station(priv, sta_id, sta, ctx);
+
+ return sta_id;
+
+}
+
+#define STA_WAIT_TIMEOUT (HZ/2)
+
+/**
+ * iwl_add_station_common -
+ */
+int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
+ const u8 *addr, bool is_ap,
+ struct ieee80211_sta *sta, u8 *sta_id_r)
+{
+ unsigned long flags_spin;
+ int ret = 0;
+ u8 sta_id;
+ struct iwl_addsta_cmd sta_cmd;
+
+ *sta_id_r = 0;
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
+ sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta);
+ if (sta_id == IWL_INVALID_STATION) {
+ IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
+ addr);
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+ return -EINVAL;
+ }
+
+ /*
+ * uCode is not able to deal with multiple requests to add a
+ * station. Keep track if one is in progress so that we do not send
+ * another.
+ */
+ if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
+ IWL_DEBUG_INFO(priv, "STA %d already in process of being "
+ "added.\n", sta_id);
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+ return -EEXIST;
+ }
+
+ if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
+ (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
+ IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
+ "adding again.\n", sta_id, addr);
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+ return -EEXIST;
+ }
+
+ priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
+ memcpy(&sta_cmd, &priv->stations[sta_id].sta,
+ sizeof(struct iwl_addsta_cmd));
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+
+ /* Add station to device's station table */
+ ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
+ if (ret) {
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
+ IWL_ERR(priv, "Adding station %pM failed.\n",
+ priv->stations[sta_id].sta.sta.addr);
+ priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
+ priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+ }
+ *sta_id_r = sta_id;
+ return ret;
+}
+
+/**
+ * iwl_sta_ucode_deactivate - deactivate ucode status for a station
+ *
+ * priv->shrd->sta_lock must be held
+ */
+static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
+{
+ /* Ucode must be active and driver must be non active */
+ if ((priv->stations[sta_id].used &
+ (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) !=
+ IWL_STA_UCODE_ACTIVE)
+ IWL_ERR(priv, "removed non active STA %u\n", sta_id);
+
+ priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
+
+ memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
+ IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
+}
+
+static int iwl_send_remove_station(struct iwl_priv *priv,
+ const u8 *addr, int sta_id,
+ bool temporary)
+{
+ struct iwl_rx_packet *pkt;
+ int ret;
+
+ unsigned long flags_spin;
+ struct iwl_rem_sta_cmd rm_sta_cmd;
+
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_REMOVE_STA,
+ .len = { sizeof(struct iwl_rem_sta_cmd), },
+ .flags = CMD_SYNC,
+ .data = { &rm_sta_cmd, },
+ };
+
+ memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
+ rm_sta_cmd.num_sta = 1;
+ memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
+
+ cmd.flags |= CMD_WANT_SKB;
+
+ ret = iwl_trans_send_cmd(trans(priv), &cmd);
+
+ if (ret)
+ return ret;
+
+ pkt = (struct iwl_rx_packet *)cmd.reply_page;
+ if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
+ IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
+ pkt->hdr.flags);
+ ret = -EIO;
+ }
+
+ if (!ret) {
+ switch (pkt->u.rem_sta.status) {
+ case REM_STA_SUCCESS_MSK:
+ if (!temporary) {
+ spin_lock_irqsave(&priv->shrd->sta_lock,
+ flags_spin);
+ iwl_sta_ucode_deactivate(priv, sta_id);
+ spin_unlock_irqrestore(&priv->shrd->sta_lock,
+ flags_spin);
+ }
+ IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
+ break;
+ default:
+ ret = -EIO;
+ IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
+ break;
+ }
+ }
+ iwl_free_pages(priv->shrd, cmd.reply_page);
+
+ 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)
+{
+ unsigned long flags;
+
+ if (!iwl_is_ready(priv->shrd)) {
+ 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_irqsave(&priv->shrd->sta_lock, flags);
+
+ 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;
+ }
+
+ 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_irqrestore(&priv->shrd->sta_lock, flags);
+
+ return iwl_send_remove_station(priv, addr, sta_id, false);
+out_err:
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+ return -EINVAL;
+}
+
+/**
+ * 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;
+ unsigned long flags_spin;
+ bool cleared = false;
+
+ IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
+
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
+ 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_irqrestore(&priv->shrd->sta_lock, flags_spin);
+
+ 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;
+ struct iwl_link_quality_cmd lq;
+ unsigned long flags_spin;
+ int i;
+ bool found = false;
+ int ret;
+ bool send_lq;
+
+ if (!iwl_is_ready(priv->shrd)) {
+ 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_irqsave(&priv->shrd->sta_lock, flags_spin);
+ 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->shrd->wowlan)
+ iwl_sta_fill_lq(priv, ctx, i, &lq);
+ else
+ memcpy(&lq, priv->stations[i].lq,
+ sizeof(struct iwl_link_quality_cmd));
+ send_lq = true;
+ }
+ spin_unlock_irqrestore(&priv->shrd->sta_lock,
+ flags_spin);
+ ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
+ if (ret) {
+ spin_lock_irqsave(&priv->shrd->sta_lock,
+ flags_spin);
+ 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;
+ spin_unlock_irqrestore(&priv->shrd->sta_lock,
+ flags_spin);
+ }
+ /*
+ * Rate scaling has already been initialized, send
+ * current LQ command
+ */
+ if (send_lq)
+ iwl_send_lq_cmd(priv, ctx, &lq,
+ CMD_SYNC, true);
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
+ priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
+ }
+ }
+
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+ 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");
+}
+
+void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
+{
+ unsigned long flags;
+ int sta_id = ctx->ap_sta_id;
+ int ret;
+ struct iwl_addsta_cmd sta_cmd;
+ struct iwl_link_quality_cmd lq;
+ bool active;
+
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags);
+ if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+ return;
+ }
+
+ memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
+ sta_cmd.mode = 0;
+ memcpy(&lq, priv->stations[sta_id].lq, sizeof(lq));
+
+ active = priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE;
+ priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+
+ if (active) {
+ ret = iwl_send_remove_station(
+ priv, priv->stations[sta_id].sta.sta.addr,
+ sta_id, true);
+ if (ret)
+ IWL_ERR(priv, "failed to remove STA %pM (%d)\n",
+ priv->stations[sta_id].sta.sta.addr, ret);
+ }
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags);
+ priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+
+ ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
+ if (ret)
+ IWL_ERR(priv, "failed to re-add STA %pM (%d)\n",
+ priv->stations[sta_id].sta.sta.addr, ret);
+ iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true);
+}
+
+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)
+{
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags);
+ 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_irqrestore(&priv->shrd->sta_lock, flags);
+}
+
+#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;
+ unsigned long flags_spin;
+
+ 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_irqsave(&priv->shrd->sta_lock, flags_spin);
+ if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+ return -EINVAL;
+ }
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+
+ 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_trans_send_cmd(trans(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_irqsave(&priv->shrd->sta_lock, flags_spin);
+ priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
+ }
+ return ret;
+}
+
+int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct iwl_priv *priv = hw->priv;
+ struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
+ int ret;
+
+ IWL_DEBUG_MAC80211(priv, "enter: received request to remove "
+ "station %pM\n", sta->addr);
+ mutex_lock(&priv->shrd->mutex);
+ IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n",
+ sta->addr);
+ ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
+ if (ret)
+ IWL_ERR(priv, "Error removing station %pM\n",
+ sta->addr);
+ mutex_unlock(&priv->shrd->mutex);
+ IWL_DEBUG_MAC80211(priv, "leave\n");
+
+ return ret;
+}
+
void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
u8 sta_id, struct iwl_link_quality_cmd *link_cmd)
{
hw_params(priv).valid_tx_ant;
}
- link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
+ 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);
}
static struct iwl_link_quality_cmd *
-iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, u8 sta_id)
+iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
+ u8 sta_id)
{
struct iwl_link_quality_cmd *link_cmd;
*
* Function sleeps.
*/
-int iwlagn_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
+int iwlagn_add_bssid_station(struct iwl_priv *priv,
+ struct iwl_rxon_context *ctx,
const u8 *addr, u8 *sta_id_r)
{
int ret;
/* 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",
+ IWL_ERR(priv,
+ "Unable to initialize rate scaling for station %pM.\n",
addr);
return -ENOMEM;
}
memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0]));
if (iwl_is_rfkill(priv->shrd)) {
- IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
+ 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;
}
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);
+ IWL_DEBUG_WEP(priv,
+ "Bad WEP key length %d\n", keyconf->keylen);
return -EINVAL;
}
#include "iwl-dev.h"
#include "iwl-core.h"
-#include "iwl-sta.h"
#include "iwl-io.h"
#include "iwl-helpers.h"
#include "iwl-agn-hw.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-helpers.h"
-#include "iwl-sta.h"
#include "iwl-agn-calib.h"
#include "iwl-agn.h"
#include "iwl-shared.h"
void iwlagn_post_scan(struct iwl_priv *priv);
void iwlagn_disable_roc(struct iwl_priv *priv);
-/* station mgmt */
-int iwlagn_manage_ibss_station(struct iwl_priv *priv,
- struct ieee80211_vif *vif, bool add);
-
/* bt coex */
void iwlagn_send_advance_bt_config(struct iwl_priv *priv);
int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
static inline const char *iwl_get_agg_tx_fail_reason(u16 status) { return ""; }
#endif
+
/* station management */
+int iwlagn_manage_ibss_station(struct iwl_priv *priv,
+ struct ieee80211_vif *vif, bool add);
+#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
+#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
+#define IWL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of
+ being activated */
+#define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211;
+ (this is for the IBSS BSSID stations) */
+#define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */
+
+
+void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
+void iwl_clear_ucode_stations(struct iwl_priv *priv,
+ struct iwl_rxon_context *ctx);
+void iwl_dealloc_bcast_stations(struct iwl_priv *priv);
+int iwl_get_free_ucode_key_offset(struct iwl_priv *priv);
+int iwl_send_add_sta(struct iwl_priv *priv,
+ struct iwl_addsta_cmd *sta, u8 flags);
+int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
+ const u8 *addr, bool is_ap,
+ struct ieee80211_sta *sta, u8 *sta_id_r);
+int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
+ const u8 *addr);
+int iwlagn_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta);
+
+u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
+ const u8 *addr, bool is_ap, struct ieee80211_sta *sta);
+
+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 iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
+ struct iwl_link_quality_cmd *lq, u8 flags, bool init);
+void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
+int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
+ struct iwl_device_cmd *cmd);
+
+
+/**
+ * iwl_clear_driver_stations - clear knowledge of all stations from driver
+ * @priv: iwl priv struct
+ *
+ * This is called during iwl_down() to make sure that in the case
+ * we're coming there from a hardware restart mac80211 will be
+ * able to reconfigure stations -- if we're getting there in the
+ * normal down flow then the stations will already be cleared.
+ */
+static inline void iwl_clear_driver_stations(struct iwl_priv *priv)
+{
+ unsigned long flags;
+ struct iwl_rxon_context *ctx;
+
+ spin_lock_irqsave(&priv->shrd->sta_lock, flags);
+ memset(priv->stations, 0, sizeof(priv->stations));
+ priv->num_stations = 0;
+
+ priv->ucode_key_table = 0;
+
+ for_each_context(priv, ctx) {
+ /*
+ * Remove all key information that is not stored as part
+ * of station information since mac80211 may not have had
+ * a chance to remove all the keys. When device is
+ * reconfigured by mac80211 after an error all keys will
+ * be reconfigured.
+ */
+ memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
+ ctx->key_mapping_keys = 0;
+ }
+
+ spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+}
+
+static inline int iwl_sta_id(struct ieee80211_sta *sta)
+{
+ if (WARN_ON(!sta))
+ return IWL_INVALID_STATION;
+
+ return ((struct iwl_station_priv *)sta->drv_priv)->sta_id;
+}
+
+/**
+ * iwl_sta_id_or_broadcast - return sta_id or broadcast sta
+ * @priv: iwl priv
+ * @context: the current context
+ * @sta: mac80211 station
+ *
+ * In certain circumstances mac80211 passes a station pointer
+ * that may be %NULL, for example during TX or key setup. In
+ * that case, we need to use the broadcast station, so this
+ * inline wraps that pattern.
+ */
+static inline int iwl_sta_id_or_broadcast(struct iwl_priv *priv,
+ struct iwl_rxon_context *context,
+ struct ieee80211_sta *sta)
+{
+ int sta_id;
+
+ if (!sta)
+ return context->bcast_sta_id;
+
+ sta_id = iwl_sta_id(sta);
+
+ /*
+ * mac80211 should not be passing a partially
+ * initialised station!
+ */
+ WARN_ON(sta_id == IWL_INVALID_STATION);
+
+ return sta_id;
+}
+
int iwlagn_alloc_bcast_station(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
int iwlagn_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-power.h"
-#include "iwl-sta.h"
#include "iwl-agn.h"
#include "iwl-helpers.h"
#include "iwl-shared.h"
#include "iwl-eeprom.h"
#include "iwl-dev.h"
#include "iwl-core.h"
-#include "iwl-sta.h"
#include "iwl-io.h"
#include "iwl-helpers.h"
#include "iwl-agn-calib.h"
#include "iwl-eeprom.h"
#include "iwl-dev.h"
#include "iwl-core.h"
-#include "iwl-sta.h"
#include "iwl-io.h"
#include "iwl-helpers.h"
#include "iwl-agn.h"
+++ /dev/null
-/******************************************************************************
- *
- * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
- *
- * Portions of this file are derived from the ipw3945 project, as well
- * as portions of the ieee80211 subsystem header files.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-
-#include <net/mac80211.h>
-#include <linux/etherdevice.h>
-#include <linux/sched.h>
-#include <linux/lockdep.h>
-
-#include "iwl-dev.h"
-#include "iwl-core.h"
-#include "iwl-sta.h"
-#include "iwl-trans.h"
-#include "iwl-agn.h"
-
-/* priv->shrd->sta_lock must be held */
-static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
-{
-
- if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
- IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
- sta_id, priv->stations[sta_id].sta.sta.addr);
-
- if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
- IWL_DEBUG_ASSOC(priv,
- "STA id %u addr %pM already present in uCode (according to driver)\n",
- sta_id, priv->stations[sta_id].sta.sta.addr);
- } else {
- priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
- IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
- sta_id, priv->stations[sta_id].sta.sta.addr);
- }
-}
-
-static int iwl_process_add_sta_resp(struct iwl_priv *priv,
- struct iwl_addsta_cmd *addsta,
- struct iwl_rx_packet *pkt)
-{
- u8 sta_id = addsta->sta.sta_id;
- unsigned long flags;
- int ret = -EIO;
-
- if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
- IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
- pkt->hdr.flags);
- return ret;
- }
-
- IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
- sta_id);
-
- spin_lock_irqsave(&priv->shrd->sta_lock, flags);
-
- switch (pkt->u.add_sta.status) {
- case ADD_STA_SUCCESS_MSK:
- IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
- iwl_sta_ucode_activate(priv, sta_id);
- ret = 0;
- break;
- case ADD_STA_NO_ROOM_IN_TABLE:
- IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
- sta_id);
- break;
- case ADD_STA_NO_BLOCK_ACK_RESOURCE:
- IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
- sta_id);
- break;
- case ADD_STA_MODIFY_NON_EXIST_STA:
- IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
- sta_id);
- break;
- default:
- IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
- pkt->u.add_sta.status);
- break;
- }
-
- IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
- priv->stations[sta_id].sta.mode ==
- STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
- sta_id, priv->stations[sta_id].sta.sta.addr);
-
- /*
- * XXX: The MAC address in the command buffer is often changed from
- * the original sent to the device. That is, the MAC address
- * written to the command buffer often is not the same MAC address
- * read from the command buffer when the command returns. This
- * issue has not yet been resolved and this debugging is left to
- * observe the problem.
- */
- IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
- priv->stations[sta_id].sta.mode ==
- STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
- addsta->sta.addr);
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
-
- return ret;
-}
-
-int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
- struct iwl_device_cmd *cmd)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_addsta_cmd *addsta =
- (struct iwl_addsta_cmd *) cmd->payload;
-
- return iwl_process_add_sta_resp(priv, addsta, pkt);
-}
-
-static u16 iwlagn_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
-{
- u16 size = (u16)sizeof(struct iwl_addsta_cmd);
- struct iwl_addsta_cmd *addsta = (struct iwl_addsta_cmd *)data;
- memcpy(addsta, cmd, size);
- /* resrved in 5000 */
- addsta->rate_n_flags = cpu_to_le16(0);
- return size;
-}
-
-int iwl_send_add_sta(struct iwl_priv *priv,
- struct iwl_addsta_cmd *sta, u8 flags)
-{
- int ret = 0;
- u8 data[sizeof(*sta)];
- struct iwl_host_cmd cmd = {
- .id = REPLY_ADD_STA,
- .flags = flags,
- .data = { data, },
- };
- u8 sta_id __maybe_unused = sta->sta.sta_id;
-
- IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
- sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
-
- if (!(flags & CMD_ASYNC)) {
- cmd.flags |= CMD_WANT_SKB;
- might_sleep();
- }
-
- cmd.len[0] = iwlagn_build_addsta_hcmd(sta, data);
- ret = iwl_trans_send_cmd(trans(priv), &cmd);
-
- if (ret || (flags & CMD_ASYNC))
- return ret;
- /*else the command was successfully sent in SYNC mode, need to free
- * the reply page */
-
- iwl_free_pages(priv->shrd, cmd.reply_page);
-
- if (cmd.handler_status)
- IWL_ERR(priv, "%s - error in the CMD response %d", __func__,
- cmd.handler_status);
-
- return cmd.handler_status;
-}
-
-static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
- struct ieee80211_sta *sta,
- struct iwl_rxon_context *ctx)
-{
- struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
- __le32 sta_flags;
- u8 mimo_ps_mode;
-
- if (!sta || !sta_ht_inf->ht_supported)
- goto done;
-
- mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
- IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
- (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
- "static" :
- (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
- "dynamic" : "disabled");
-
- sta_flags = priv->stations[index].sta.station_flags;
-
- sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
-
- switch (mimo_ps_mode) {
- case WLAN_HT_CAP_SM_PS_STATIC:
- sta_flags |= STA_FLG_MIMO_DIS_MSK;
- break;
- case WLAN_HT_CAP_SM_PS_DYNAMIC:
- sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
- break;
- case WLAN_HT_CAP_SM_PS_DISABLED:
- break;
- default:
- IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
- break;
- }
-
- sta_flags |= cpu_to_le32(
- (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
-
- sta_flags |= cpu_to_le32(
- (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
-
- if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
- sta_flags |= STA_FLG_HT40_EN_MSK;
- else
- sta_flags &= ~STA_FLG_HT40_EN_MSK;
-
- priv->stations[index].sta.station_flags = sta_flags;
- done:
- return;
-}
-
-/**
- * iwl_prep_station - Prepare station information for addition
- *
- * should be called with sta_lock held
- */
-u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
-{
- struct iwl_station_entry *station;
- int i;
- u8 sta_id = IWL_INVALID_STATION;
-
- if (is_ap)
- sta_id = ctx->ap_sta_id;
- else if (is_broadcast_ether_addr(addr))
- sta_id = ctx->bcast_sta_id;
- else
- for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) {
- if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
- addr)) {
- sta_id = i;
- break;
- }
-
- if (!priv->stations[i].used &&
- sta_id == IWL_INVALID_STATION)
- sta_id = i;
- }
-
- /*
- * These two conditions have the same outcome, but keep them
- * separate
- */
- if (unlikely(sta_id == IWL_INVALID_STATION))
- return sta_id;
-
- /*
- * uCode is not able to deal with multiple requests to add a
- * station. Keep track if one is in progress so that we do not send
- * another.
- */
- if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
- IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
- sta_id);
- return sta_id;
- }
-
- if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
- (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
- !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
- IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
- sta_id, addr);
- return sta_id;
- }
-
- station = &priv->stations[sta_id];
- station->used = IWL_STA_DRIVER_ACTIVE;
- IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
- sta_id, addr);
- priv->num_stations++;
-
- /* Set up the REPLY_ADD_STA command to send to device */
- memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
- memcpy(station->sta.sta.addr, addr, ETH_ALEN);
- station->sta.mode = 0;
- station->sta.sta.sta_id = sta_id;
- station->sta.station_flags = ctx->station_flags;
- station->ctxid = ctx->ctxid;
-
- if (sta) {
- struct iwl_station_priv *sta_priv;
-
- sta_priv = (void *)sta->drv_priv;
- sta_priv->ctx = ctx;
- }
-
- /*
- * OK to call unconditionally, since local stations (IBSS BSSID
- * STA and broadcast STA) pass in a NULL sta, and mac80211
- * doesn't allow HT IBSS.
- */
- iwl_set_ht_add_station(priv, sta_id, sta, ctx);
-
- return sta_id;
-
-}
-
-#define STA_WAIT_TIMEOUT (HZ/2)
-
-/**
- * iwl_add_station_common -
- */
-int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- const u8 *addr, bool is_ap,
- struct ieee80211_sta *sta, u8 *sta_id_r)
-{
- unsigned long flags_spin;
- int ret = 0;
- u8 sta_id;
- struct iwl_addsta_cmd sta_cmd;
-
- *sta_id_r = 0;
- spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
- sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta);
- if (sta_id == IWL_INVALID_STATION) {
- IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
- addr);
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
- return -EINVAL;
- }
-
- /*
- * uCode is not able to deal with multiple requests to add a
- * station. Keep track if one is in progress so that we do not send
- * another.
- */
- if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
- IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
- sta_id);
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
- return -EEXIST;
- }
-
- if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
- (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
- IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
- sta_id, addr);
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
- return -EEXIST;
- }
-
- priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
- memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
-
- /* Add station to device's station table */
- ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
- if (ret) {
- spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
- IWL_ERR(priv, "Adding station %pM failed.\n",
- priv->stations[sta_id].sta.sta.addr);
- priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
- priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
- }
- *sta_id_r = sta_id;
- return ret;
-}
-
-/**
- * iwl_sta_ucode_deactivate - deactivate ucode status for a station
- *
- * priv->shrd->sta_lock must be held
- */
-static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
-{
- /* Ucode must be active and driver must be non active */
- if ((priv->stations[sta_id].used &
- (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != IWL_STA_UCODE_ACTIVE)
- IWL_ERR(priv, "removed non active STA %u\n", sta_id);
-
- priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
-
- memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
- IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
-}
-
-static int iwl_send_remove_station(struct iwl_priv *priv,
- const u8 *addr, int sta_id,
- bool temporary)
-{
- struct iwl_rx_packet *pkt;
- int ret;
-
- unsigned long flags_spin;
- struct iwl_rem_sta_cmd rm_sta_cmd;
-
- struct iwl_host_cmd cmd = {
- .id = REPLY_REMOVE_STA,
- .len = { sizeof(struct iwl_rem_sta_cmd), },
- .flags = CMD_SYNC,
- .data = { &rm_sta_cmd, },
- };
-
- memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
- rm_sta_cmd.num_sta = 1;
- memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
-
- cmd.flags |= CMD_WANT_SKB;
-
- ret = iwl_trans_send_cmd(trans(priv), &cmd);
-
- if (ret)
- return ret;
-
- pkt = (struct iwl_rx_packet *)cmd.reply_page;
- if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
- IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
- pkt->hdr.flags);
- ret = -EIO;
- }
-
- if (!ret) {
- switch (pkt->u.rem_sta.status) {
- case REM_STA_SUCCESS_MSK:
- if (!temporary) {
- spin_lock_irqsave(&priv->shrd->sta_lock,
- flags_spin);
- iwl_sta_ucode_deactivate(priv, sta_id);
- spin_unlock_irqrestore(&priv->shrd->sta_lock,
- flags_spin);
- }
- IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
- break;
- default:
- ret = -EIO;
- IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
- break;
- }
- }
- iwl_free_pages(priv->shrd, cmd.reply_page);
-
- 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)
-{
- unsigned long flags;
-
- if (!iwl_is_ready(priv->shrd)) {
- 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_irqsave(&priv->shrd->sta_lock, flags);
-
- 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;
- }
-
- 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_irqrestore(&priv->shrd->sta_lock, flags);
-
- return iwl_send_remove_station(priv, addr, sta_id, false);
-out_err:
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
- return -EINVAL;
-}
-
-/**
- * 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;
- unsigned long flags_spin;
- bool cleared = false;
-
- IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
-
- spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
- 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_irqrestore(&priv->shrd->sta_lock, flags_spin);
-
- 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;
- struct iwl_link_quality_cmd lq;
- unsigned long flags_spin;
- int i;
- bool found = false;
- int ret;
- bool send_lq;
-
- if (!iwl_is_ready(priv->shrd)) {
- 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_irqsave(&priv->shrd->sta_lock, flags_spin);
- 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->shrd->wowlan)
- iwl_sta_fill_lq(priv, ctx, i, &lq);
- else
- memcpy(&lq, priv->stations[i].lq,
- sizeof(struct iwl_link_quality_cmd));
- send_lq = true;
- }
- spin_unlock_irqrestore(&priv->shrd->sta_lock,
- flags_spin);
- ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
- if (ret) {
- spin_lock_irqsave(&priv->shrd->sta_lock,
- flags_spin);
- 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;
- spin_unlock_irqrestore(&priv->shrd->sta_lock,
- flags_spin);
- }
- /*
- * Rate scaling has already been initialized, send
- * current LQ command
- */
- if (send_lq)
- iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true);
- spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
- priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
- }
- }
-
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
- 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");
-}
-
-void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
-{
- unsigned long flags;
- int sta_id = ctx->ap_sta_id;
- int ret;
- struct iwl_addsta_cmd sta_cmd;
- struct iwl_link_quality_cmd lq;
- bool active;
-
- spin_lock_irqsave(&priv->shrd->sta_lock, flags);
- if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
- return;
- }
-
- memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
- sta_cmd.mode = 0;
- memcpy(&lq, priv->stations[sta_id].lq, sizeof(lq));
-
- active = priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE;
- priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
-
- if (active) {
- ret = iwl_send_remove_station(
- priv, priv->stations[sta_id].sta.sta.addr,
- sta_id, true);
- if (ret)
- IWL_ERR(priv, "failed to remove STA %pM (%d)\n",
- priv->stations[sta_id].sta.sta.addr, ret);
- }
- spin_lock_irqsave(&priv->shrd->sta_lock, flags);
- priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
-
- ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
- if (ret)
- IWL_ERR(priv, "failed to re-add STA %pM (%d)\n",
- priv->stations[sta_id].sta.sta.addr, ret);
- iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true);
-}
-
-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)
-{
- unsigned long flags;
- int i;
-
- spin_lock_irqsave(&priv->shrd->sta_lock, flags);
- 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_irqrestore(&priv->shrd->sta_lock, flags);
-}
-
-#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;
- unsigned long flags_spin;
-
- 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_irqsave(&priv->shrd->sta_lock, flags_spin);
- if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
- return -EINVAL;
- }
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
-
- 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_trans_send_cmd(trans(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_irqsave(&priv->shrd->sta_lock, flags_spin);
- priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
- }
- return ret;
-}
-
-int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
-{
- struct iwl_priv *priv = hw->priv;
- struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
- int ret;
-
- IWL_DEBUG_MAC80211(priv, "enter: received request to remove "
- "station %pM\n", sta->addr);
- mutex_lock(&priv->shrd->mutex);
- IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n",
- sta->addr);
- ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
- if (ret)
- IWL_ERR(priv, "Error removing station %pM\n",
- sta->addr);
- mutex_unlock(&priv->shrd->mutex);
- IWL_DEBUG_MAC80211(priv, "leave\n");
-
- return ret;
-}
+++ /dev/null
-/******************************************************************************
- *
- * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
- *
- * Portions of this file are derived from the ipw3945 project, as well
- * as portions of the ieee80211 subsystem header files.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-#ifndef __iwl_sta_h__
-#define __iwl_sta_h__
-
-#include "iwl-dev.h"
-
-#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
-#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
-#define IWL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of
- being activated */
-#define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211;
- (this is for the IBSS BSSID stations) */
-#define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */
-
-
-void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
-void iwl_clear_ucode_stations(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx);
-void iwl_dealloc_bcast_stations(struct iwl_priv *priv);
-int iwl_get_free_ucode_key_offset(struct iwl_priv *priv);
-int iwl_send_add_sta(struct iwl_priv *priv,
- struct iwl_addsta_cmd *sta, u8 flags);
-int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- const u8 *addr, bool is_ap,
- struct ieee80211_sta *sta, u8 *sta_id_r);
-int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
- const u8 *addr);
-int iwlagn_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
- struct ieee80211_sta *sta);
-
-u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- const u8 *addr, bool is_ap, struct ieee80211_sta *sta);
-
-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 iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- struct iwl_link_quality_cmd *lq, u8 flags, bool init);
-void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
-int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
- struct iwl_device_cmd *cmd);
-
-
-/**
- * iwl_clear_driver_stations - clear knowledge of all stations from driver
- * @priv: iwl priv struct
- *
- * This is called during iwl_down() to make sure that in the case
- * we're coming there from a hardware restart mac80211 will be
- * able to reconfigure stations -- if we're getting there in the
- * normal down flow then the stations will already be cleared.
- */
-static inline void iwl_clear_driver_stations(struct iwl_priv *priv)
-{
- unsigned long flags;
- struct iwl_rxon_context *ctx;
-
- spin_lock_irqsave(&priv->shrd->sta_lock, flags);
- memset(priv->stations, 0, sizeof(priv->stations));
- priv->num_stations = 0;
-
- priv->ucode_key_table = 0;
-
- for_each_context(priv, ctx) {
- /*
- * Remove all key information that is not stored as part
- * of station information since mac80211 may not have had
- * a chance to remove all the keys. When device is
- * reconfigured by mac80211 after an error all keys will
- * be reconfigured.
- */
- memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
- ctx->key_mapping_keys = 0;
- }
-
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
-}
-
-static inline int iwl_sta_id(struct ieee80211_sta *sta)
-{
- if (WARN_ON(!sta))
- return IWL_INVALID_STATION;
-
- return ((struct iwl_station_priv *)sta->drv_priv)->sta_id;
-}
-
-/**
- * iwl_sta_id_or_broadcast - return sta_id or broadcast sta
- * @priv: iwl priv
- * @context: the current context
- * @sta: mac80211 station
- *
- * In certain circumstances mac80211 passes a station pointer
- * that may be %NULL, for example during TX or key setup. In
- * that case, we need to use the broadcast station, so this
- * inline wraps that pattern.
- */
-static inline int iwl_sta_id_or_broadcast(struct iwl_priv *priv,
- struct iwl_rxon_context *context,
- struct ieee80211_sta *sta)
-{
- int sta_id;
-
- if (!sta)
- return context->bcast_sta_id;
-
- sta_id = iwl_sta_id(sta);
-
- /*
- * mac80211 should not be passing a partially
- * initialised station!
- */
- WARN_ON(sta_id == IWL_INVALID_STATION);
-
- return sta_id;
-}
-#endif /* __iwl_sta_h__ */
projects / kernel / kernel-generic.git / commitdiff