iwlagn: consolidate the API that sends host commands and move to transport

Now, there are only two functions to send a host command:
* send_cmd that receives a iwl_host_cmd
* send_cmd_pdu that builds the iwl_host_cmd itself and received flags

The flags CMD_ASYNC / CMD_SYNC / CMD_WANT_SKB are not changed by the API
functions.

Kill the unused flags CMD_SIZE_NORMAL / CMD_NO_SKB on the way.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

19 files changed, 100 insertions, 92 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index c55cec853f50..82093344b9b5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -316,7 +316,7 @@ static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
                 return -EFAULT;
         }
 
-        return iwl_send_cmd_sync(priv, &hcmd);
+        return priv->trans.ops->send_cmd(priv, &hcmd);
 }
 
 static struct iwl_lib_ops iwl5000_lib = {
diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c
index 965d010794b4..2134514a40d1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-6000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-6000.c
@@ -255,7 +255,7 @@ static int iwl6000_hw_channel_switch(struct iwl_priv *priv,
                 return -EFAULT;
         }
 
-        return iwl_send_cmd_sync(priv, &hcmd);
+        return priv->trans.ops->send_cmd(priv, &hcmd);
 }
 
 static struct iwl_lib_ops iwl6000_lib = {
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
index c9255def1080..e7c74fcb55c0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
@@ -87,6 +87,7 @@ int iwl_send_calib_results(struct iwl_priv *priv)
 
         struct iwl_host_cmd hcmd = {
                 .id = REPLY_PHY_CALIBRATION_CMD,
+                .flags = CMD_SYNC,
         };
 
         for (i = 0; i < IWL_CALIB_MAX; i++) {
@@ -95,7 +96,7 @@ int iwl_send_calib_results(struct iwl_priv *priv)
                         hcmd.len[0] = priv->calib_results[i].buf_len;
                         hcmd.data[0] = priv->calib_results[i].buf;
                         hcmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
-                        ret = iwl_send_cmd_sync(priv, &hcmd);
+                        ret = priv->trans.ops->send_cmd(priv, &hcmd);
                         if (ret) {
                                 IWL_ERR(priv, "Error %d iteration %d\n",
                                         ret, i);
@@ -481,7 +482,7 @@ static int iwl_sensitivity_write(struct iwl_priv *priv)
         memcpy(&(priv->sensitivity_tbl[0]), &(cmd.table[0]),
                sizeof(u16)*HD_TABLE_SIZE);
 
-        return iwl_send_cmd(priv, &cmd_out);
+        return priv->trans.ops->send_cmd(priv, &cmd_out);
 }
 
 /* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */
@@ -545,7 +546,7 @@ static int iwl_enhance_sensitivity_write(struct iwl_priv *priv)
                &(cmd.enhance_table[HD_INA_NON_SQUARE_DET_OFDM_INDEX]),
                sizeof(u16)*ENHANCE_HD_TABLE_ENTRIES);
 
-        return iwl_send_cmd(priv, &cmd_out);
+        return priv->trans.ops->send_cmd(priv, &cmd_out);
 }
 
 void iwl_init_sensitivity(struct iwl_priv *priv)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
index ce7d4b56d9b2..406bf59bd441 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
@@ -45,7 +45,9 @@ int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 
         if (IWL_UCODE_API(priv->ucode_ver) > 1) {
                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
-                return iwl_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD,
+                return priv->trans.ops->send_cmd_pdu(priv,
+                                        TX_ANT_CONFIGURATION_CMD,
+                                        CMD_SYNC,
                                         sizeof(struct iwl_tx_ant_config_cmd),
                                         &tx_ant_cmd);
         } else {
@@ -115,8 +117,8 @@ static void iwlagn_gain_computation(struct iwl_priv *priv,
                         priv->_agn.phy_calib_chain_noise_gain_cmd);
                 cmd.delta_gain_1 = data->delta_gain_code[1];
                 cmd.delta_gain_2 = data->delta_gain_code[2];
-                iwl_send_cmd_pdu_async(priv, REPLY_PHY_CALIBRATION_CMD,
-                        sizeof(cmd), &cmd, NULL);
+                priv->trans.ops->send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
+                        CMD_ASYNC, sizeof(cmd), &cmd);
 
                 data->radio_write = 1;
                 data->state = IWL_CHAIN_NOISE_CALIBRATED;
@@ -144,8 +146,9 @@ static void iwlagn_chain_noise_reset(struct iwl_priv *priv)
                 memset(&cmd, 0, sizeof(cmd));
                 iwl_set_calib_hdr(&cmd.hdr,
                         priv->_agn.phy_calib_chain_noise_reset_cmd);
-                ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
-                                        sizeof(cmd), &cmd);
+                ret = priv->trans.ops->send_cmd_pdu(priv,
+                                        REPLY_PHY_CALIBRATION_CMD,
+                                        CMD_SYNC, sizeof(cmd), &cmd);
                 if (ret)
                         IWL_ERR(priv,
                                 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
@@ -290,7 +293,8 @@ int iwlagn_set_pan_params(struct iwl_priv *priv)
         cmd.slots[0].width = cpu_to_le16(slot0);
         cmd.slots[1].width = cpu_to_le16(slot1);
 
-        ret = iwl_send_cmd_pdu(priv, REPLY_WIPAN_PARAMS, sizeof(cmd), &cmd);
+        ret = priv->trans.ops->send_cmd_pdu(priv, REPLY_WIPAN_PARAMS, CMD_SYNC,
+                        sizeof(cmd), &cmd);
         if (ret)
                 IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index a926142f470f..39664c9bbff7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -540,8 +540,8 @@ int iwlagn_send_tx_power(struct iwl_priv *priv)
         else
                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
 
-        return iwl_send_cmd_pdu(priv, tx_ant_cfg_cmd, sizeof(tx_power_cmd),
-                                &tx_power_cmd);
+        return priv->trans.ops->send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC,
+                        sizeof(tx_power_cmd), &tx_power_cmd);
 }
 
 void iwlagn_temperature(struct iwl_priv *priv)
@@ -1063,6 +1063,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
         struct iwl_host_cmd cmd = {
                 .id = REPLY_SCAN_CMD,
                 .len = { sizeof(struct iwl_scan_cmd), },
+                .flags = CMD_SYNC,
         };
         struct iwl_scan_cmd *scan;
         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
@@ -1359,7 +1360,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
         if (ret)
                 return ret;
 
-        ret = iwl_send_cmd_sync(priv, &cmd);
+        ret = priv->trans.ops->send_cmd(priv, &cmd);
         if (ret) {
                 clear_bit(STATUS_SCAN_HW, &priv->status);
                 iwlagn_set_pan_params(priv);
@@ -1465,7 +1466,7 @@ int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
                        flush_cmd.fifo_control);
         flush_cmd.flush_control = cpu_to_le16(flush_control);
 
-        return iwl_send_cmd(priv, &cmd);
+        return priv->trans.ops->send_cmd(priv, &cmd);
 }
 
 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
@@ -1657,13 +1658,13 @@ void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
         if (priv->cfg->bt_params->bt_session_2) {
                 memcpy(&bt_cmd_2000.basic, &basic,
                         sizeof(basic));
-                ret = iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
-                        sizeof(bt_cmd_2000), &bt_cmd_2000);
+                ret = priv->trans.ops->send_cmd_pdu(priv, REPLY_BT_CONFIG,
+                        CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000);
         } else {
                 memcpy(&bt_cmd_6000.basic, &basic,
                         sizeof(basic));
-                ret = iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
-                        sizeof(bt_cmd_6000), &bt_cmd_6000);
+                ret = priv->trans.ops->send_cmd_pdu(priv, REPLY_BT_CONFIG,
+                        CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000);
         }
         if (ret)
                 IWL_ERR(priv, "failed to send BT Coex Config\n");
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
index c6bb73a66d9f..c365295cc59f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
@@ -39,7 +39,8 @@ static int iwlagn_disable_bss(struct iwl_priv *priv,
         int ret;
 
         send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
-        ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, sizeof(*send), send);
+        ret = priv->trans.ops->send_cmd_pdu(priv, ctx->rxon_cmd,
+                                CMD_SYNC, sizeof(*send), send);
 
         send->filter_flags = old_filter;
 
@@ -64,7 +65,8 @@ static int iwlagn_disable_pan(struct iwl_priv *priv,
 
         send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
         send->dev_type = RXON_DEV_TYPE_P2P;
-        ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, sizeof(*send), send);
+        ret = priv->trans.ops->send_cmd_pdu(priv, ctx->rxon_cmd,
+                                CMD_SYNC, sizeof(*send), send);
 
         send->filter_flags = old_filter;
         send->dev_type = old_dev_type;
@@ -89,7 +91,8 @@ static int iwlagn_disconn_pan(struct iwl_priv *priv,
         int ret;
 
         send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
-        ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, sizeof(*send), send);
+        ret = priv->trans.ops->send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC,
+                                sizeof(*send), send);
 
         send->filter_flags = old_filter;
 
@@ -117,7 +120,7 @@ static void iwlagn_update_qos(struct iwl_priv *priv,
                       ctx->qos_data.qos_active,
                       ctx->qos_data.def_qos_parm.qos_flags);
 
-        ret = iwl_send_cmd_pdu(priv, ctx->qos_cmd,
+        ret = priv->trans.ops->send_cmd_pdu(priv, ctx->qos_cmd, CMD_SYNC,
                                sizeof(struct iwl_qosparam_cmd),
                                &ctx->qos_data.def_qos_parm);
         if (ret)
@@ -176,8 +179,8 @@ static int iwlagn_send_rxon_assoc(struct iwl_priv *priv,
                  ctx->staging.ofdm_ht_triple_stream_basic_rates;
         rxon_assoc.acquisition_data = ctx->staging.acquisition_data;
 
-        ret = iwl_send_cmd_pdu_async(priv, ctx->rxon_assoc_cmd,
-                                     sizeof(rxon_assoc), &rxon_assoc, NULL);
+        ret = priv->trans.ops->send_cmd_pdu(priv, ctx->rxon_assoc_cmd,
+                                CMD_ASYNC, sizeof(rxon_assoc), &rxon_assoc);
         return ret;
 }
 
@@ -262,7 +265,7 @@ static int iwlagn_rxon_connect(struct iwl_priv *priv,
          * Associated RXON doesn't clear the station table in uCode,
          * so we don't need to restore stations etc. after this.
          */
-        ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
+        ret = priv->trans.ops->send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC,
                       sizeof(struct iwl_rxon_cmd), &ctx->staging);
         if (ret) {
                 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-sta.c b/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
index 9b32f83f0b7f..b0e54c915c78 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
@@ -180,7 +180,7 @@ static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv,
         cmd.len[0] = cmd_size;
 
         if (not_empty || send_if_empty)
-                return iwl_send_cmd(priv, &cmd);
+                return priv->trans.ops->send_cmd(priv, &cmd);
         else
                 return 0;
 }
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
index 2043c8b3139b..1976582df241 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
@@ -223,7 +223,7 @@ static int iwlagn_send_calib_cfg(struct iwl_priv *priv)
         calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
         calib_cfg_cmd.ucd_calib_cfg.flags = IWL_CALIB_INIT_CFG_ALL;
 
-        return iwl_send_cmd(priv, &cmd);
+        return priv->trans.ops->send_cmd(priv, &cmd);
 }
 
 void iwlagn_rx_calib_result(struct iwl_priv *priv,
@@ -321,7 +321,8 @@ static int iwlagn_send_wimax_coex(struct iwl_priv *priv)
                 /* coexistence is disabled */
                 memset(&coex_cmd, 0, sizeof(coex_cmd));
         }
-        return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
+        return priv->trans.ops->send_cmd_pdu(priv,
+                                COEX_PRIORITY_TABLE_CMD, CMD_SYNC,
                                 sizeof(coex_cmd), &coex_cmd);
 }
 
@@ -353,7 +354,8 @@ void iwlagn_send_prio_tbl(struct iwl_priv *priv)
 
         memcpy(prio_tbl_cmd.prio_tbl, iwlagn_bt_prio_tbl,
                 sizeof(iwlagn_bt_prio_tbl));
-        if (iwl_send_cmd_pdu(priv, REPLY_BT_COEX_PRIO_TABLE,
+        if (priv->trans.ops->send_cmd_pdu(priv,
+                                REPLY_BT_COEX_PRIO_TABLE, CMD_SYNC,
                                 sizeof(prio_tbl_cmd), &prio_tbl_cmd))
                 IWL_ERR(priv, "failed to send BT prio tbl command\n");
 }
@@ -365,7 +367,8 @@ int iwlagn_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
 
         env_cmd.action = action;
         env_cmd.type = type;
-        ret = iwl_send_cmd_pdu(priv, REPLY_BT_COEX_PROT_ENV,
+        ret = priv->trans.ops->send_cmd_pdu(priv,
+                               REPLY_BT_COEX_PROT_ENV, CMD_SYNC,
                                sizeof(env_cmd), &env_cmd);
         if (ret)
                 IWL_ERR(priv, "failed to send BT env command\n");
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 4d5b7cc33946..d56d17c59de7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -129,6 +129,7 @@ int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
         struct iwl_host_cmd cmd = {
                 .id = REPLY_TX_BEACON,
+                .flags = CMD_SYNC,
         };
         struct ieee80211_tx_info *info;
         u32 frame_size;
@@ -205,7 +206,7 @@ int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
         cmd.data[1] = priv->beacon_skb->data;
         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 
-        return iwl_send_cmd_sync(priv, &cmd);
+        return priv->trans.ops->send_cmd(priv, &cmd);
 }
 
 static void iwl_bg_beacon_update(struct work_struct *work)
@@ -578,7 +579,8 @@ static void iwl_rx_handle(struct iwl_priv *priv)
 
                 if (reclaim) {
                         /* Invoke any callbacks, transfer the buffer to caller,
-                         * and fire off the (possibly) blocking iwl_send_cmd()
+                         * and fire off the (possibly) blocking
+                         * priv->trans.ops->send_cmd()
                          * as we reclaim the driver command queue */
                         if (rxb->page)
                                 iwl_tx_cmd_complete(priv, rxb);
@@ -1940,8 +1942,9 @@ static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
                 adv_cmd.critical_temperature_exit =
                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
 
-                ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
-                                       sizeof(adv_cmd), &adv_cmd);
+                ret = priv->trans.ops->send_cmd_pdu(priv,
+                                       REPLY_CT_KILL_CONFIG_CMD,
+                                       CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
                 if (ret)
                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
                 else
@@ -1955,8 +1958,9 @@ static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
                 cmd.critical_temperature_R =
                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 
-                ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
-                                       sizeof(cmd), &cmd);
+                ret = priv->trans.ops->send_cmd_pdu(priv,
+                                       REPLY_CT_KILL_CONFIG_CMD,
+                                       CMD_SYNC, sizeof(cmd), &cmd);
                 if (ret)
                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
                 else
@@ -1980,7 +1984,7 @@ static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 
-        return iwl_send_cmd(priv, &cmd);
+        return priv->trans.ops->send_cmd(priv, &cmd);
 }
 
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 9bf46864f0d1..78e031e25481 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -375,8 +375,8 @@ int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
                         le32_to_cpu(ctx->timing.beacon_init_val),
                         le16_to_cpu(ctx->timing.atim_window));
 
-        return iwl_send_cmd_pdu(priv, ctx->rxon_timing_cmd,
-                                sizeof(ctx->timing), &ctx->timing);
+        return priv->trans.ops->send_cmd_pdu(priv, ctx->rxon_timing_cmd,
+                                CMD_SYNC, sizeof(ctx->timing), &ctx->timing);
 }
 
 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
@@ -1131,8 +1131,8 @@ void iwl_send_bt_config(struct iwl_priv *priv)
         IWL_DEBUG_INFO(priv, "BT coex %s\n",
                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
 
-        if (iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
-                             sizeof(struct iwl_bt_cmd), &bt_cmd))
+        if (priv->trans.ops->send_cmd_pdu(priv, REPLY_BT_CONFIG,
+                             CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 }
 
@@ -1144,11 +1144,13 @@ int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
         };
 
         if (flags & CMD_ASYNC)
-                return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
+                return priv->trans.ops->send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
+                                              CMD_ASYNC,
                                                sizeof(struct iwl_statistics_cmd),
-                                               &statistics_cmd, NULL);
+                                               &statistics_cmd);
         else
-                return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
+                return priv->trans.ops->send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
+                                        CMD_SYNC,
                                         sizeof(struct iwl_statistics_cmd),
                                         &statistics_cmd);
 }
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index 76f65350ebc3..3f7b921922ad 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -434,16 +434,9 @@ int __must_check iwl_scan_initiate(struct iwl_priv *priv,
  *****************************************************/
 
 const char *get_cmd_string(u8 cmd);
-int __must_check iwl_send_cmd_sync(struct iwl_priv *priv,
-                                   struct iwl_host_cmd *cmd);
 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
-int __must_check iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id,
+int __must_check iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u32 flags,
                                   u16 len, const void *data);
-int iwl_send_cmd_pdu_async(struct iwl_priv *priv, u8 id, u16 len,
-                           const void *data,
-                           void (*callback)(struct iwl_priv *priv,
-                                            struct iwl_device_cmd *cmd,
-                                            struct iwl_rx_packet *pkt));
 
 int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 85e4fa350371..975ad79a5f77 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -259,10 +259,8 @@ struct iwl_channel_info {
 
 enum {
         CMD_SYNC = 0,
-        CMD_SIZE_NORMAL = 0,
-        CMD_NO_SKB = 0,
-        CMD_ASYNC = (1 << 1),
-        CMD_WANT_SKB = (1 << 2),
+        CMD_ASYNC = BIT(0),
+        CMD_WANT_SKB = BIT(1),
 };
 
 #define DEF_CMD_PAYLOAD_SIZE 320
@@ -295,6 +293,16 @@ enum iwl_hcmd_dataflag {
         IWL_HCMD_DFL_NOCOPY     = BIT(0),
 };
 
+/**
+ * struct iwl_host_cmd - Host command to the uCode
+ * @data: array of chunks that composes the data of the host command
+ * @reply_page: pointer to the page that holds the response to the host command
+ * @callback:
+ * @flags: can be CMD_* note CMD_WANT_SKB is incompatible withe CMD_ASYNC
+ * @len: array of the lenths of the chunks in data
+ * @dataflags:
+ * @id: id of the host command
+ */
 struct iwl_host_cmd {
         const void *data[IWL_MAX_CMD_TFDS];
         unsigned long reply_page;
@@ -1234,6 +1242,8 @@ struct iwl_trans;
  * @tx_init:inits the tx memory, allocate if needed
  * @tx_stop: stop the tx
  * @tx_free: frees the tx memory
+ * @send_cmd:send a host command
+ * @send_cmd_pdu:send a host command: flags can be CMD_*
  */
 struct iwl_trans_ops {
         int (*rx_init)(struct iwl_priv *priv);
@@ -1243,6 +1253,11 @@ struct iwl_trans_ops {
         int (*tx_init)(struct iwl_priv *priv);
         int (*tx_stop)(struct iwl_priv *priv);
         void (*tx_free)(struct iwl_priv *priv);
+
+        int (*send_cmd)(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
+
+        int (*send_cmd_pdu)(struct iwl_priv *priv, u8 id, u32 flags, u16 len,
+                     const void *data);
 };
 
 struct iwl_trans {
diff --git a/drivers/net/wireless/iwlwifi/iwl-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-hcmd.c
index 107b38e2ee93..6cff8c165ce9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-hcmd.c
+++ b/drivers/net/wireless/iwlwifi/iwl-hcmd.c
@@ -143,9 +143,6 @@ static int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 {
         int ret;
 
-        if (WARN_ON(!(cmd->flags & CMD_ASYNC)))
-                return -EINVAL;
-
         /* An asynchronous command can not expect an SKB to be set. */
         if (WARN_ON(cmd->flags & CMD_WANT_SKB))
                 return -EINVAL;
@@ -166,16 +163,13 @@ static int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
         return 0;
 }
 
-int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
+static int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 {
         int cmd_idx;
         int ret;
 
         lockdep_assert_held(&priv->mutex);
 
-        if (WARN_ON(cmd->flags & CMD_ASYNC))
-                return -EINVAL;
-
          /* A synchronous command can not have a callback set. */
         if (WARN_ON(cmd->callback))
                 return -EINVAL;
@@ -263,31 +257,15 @@ int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
         return iwl_send_cmd_sync(priv, cmd);
 }
 
-int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
-{
-        struct iwl_host_cmd cmd = {
-                .id = id,
-                .len = { len, },
-                .data = { data, },
-        };
-
-        return iwl_send_cmd_sync(priv, &cmd);
-}
-
-int iwl_send_cmd_pdu_async(struct iwl_priv *priv,
-                           u8 id, u16 len, const void *data,
-                           void (*callback)(struct iwl_priv *priv,
-                                            struct iwl_device_cmd *cmd,
-                                            struct iwl_rx_packet *pkt))
+int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u32 flags, u16 len,
+                     const void *data)
 {
         struct iwl_host_cmd cmd = {
                 .id = id,
                 .len = { len, },
                 .data = { data, },
+                .flags = flags,
         };
 
-        cmd.flags |= CMD_ASYNC;
-        cmd.callback = callback;
-
-        return iwl_send_cmd_async(priv, &cmd);
+        return iwl_send_cmd(priv, &cmd);
 }
diff --git a/drivers/net/wireless/iwlwifi/iwl-led.c b/drivers/net/wireless/iwlwifi/iwl-led.c
index ff08da099754..d5bc3e09a92f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-led.c
+++ b/drivers/net/wireless/iwlwifi/iwl-led.c
@@ -111,7 +111,7 @@ static int iwl_send_led_cmd(struct iwl_priv *priv, struct iwl_led_cmd *led_cmd)
         if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
                 iwl_write32(priv, CSR_LED_REG, reg & CSR_LED_BSM_CTRL_MSK);
 
-        return iwl_send_cmd(priv, &cmd);
+        return priv->trans.ops->send_cmd(priv, &cmd);
 }
 
 /* Set led pattern command */
diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c
index 565e57e48be8..0c08dfd40dd8 100644
--- a/drivers/net/wireless/iwlwifi/iwl-power.c
+++ b/drivers/net/wireless/iwlwifi/iwl-power.c
@@ -334,7 +334,7 @@ static int iwl_set_power(struct iwl_priv *priv, struct iwl_powertable_cmd *cmd)
                         le32_to_cpu(cmd->sleep_interval[3]),
                         le32_to_cpu(cmd->sleep_interval[4]));
 
-        return iwl_send_cmd_pdu(priv, POWER_TABLE_CMD,
+        return priv->trans.ops->send_cmd_pdu(priv, POWER_TABLE_CMD, CMD_SYNC,
                                 sizeof(struct iwl_powertable_cmd), cmd);
 }
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index 438eecd87335..4c809bf9aacc 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -61,7 +61,7 @@ static int iwl_send_scan_abort(struct iwl_priv *priv)
         struct iwl_rx_packet *pkt;
         struct iwl_host_cmd cmd = {
                 .id = REPLY_SCAN_ABORT_CMD,
-                .flags = CMD_WANT_SKB,
+                .flags = CMD_SYNC | CMD_WANT_SKB,
         };
 
         /* Exit instantly with error when device is not ready
@@ -74,7 +74,7 @@ static int iwl_send_scan_abort(struct iwl_priv *priv)
             test_bit(STATUS_EXIT_PENDING, &priv->status))
                 return -EIO;
 
-        ret = iwl_send_cmd_sync(priv, &cmd);
+        ret = priv->trans.ops->send_cmd(priv, &cmd);
         if (ret)
                 return ret;
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index 7df2814fd4f8..06faa1e2237d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -156,7 +156,7 @@ int iwl_send_add_sta(struct iwl_priv *priv,
         }
 
         cmd.len[0] = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
-        ret = iwl_send_cmd(priv, &cmd);
+        ret = priv->trans.ops->send_cmd(priv, &cmd);
 
         if (ret || (flags & CMD_ASYNC))
                 return ret;
@@ -412,7 +412,7 @@ static int iwl_send_remove_station(struct iwl_priv *priv,
 
         cmd.flags |= CMD_WANT_SKB;
 
-        ret = iwl_send_cmd(priv, &cmd);
+        ret = priv->trans.ops->send_cmd(priv, &cmd);
 
         if (ret)
                 return ret;
@@ -781,7 +781,7 @@ int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
                 return -EINVAL;
 
         if (is_lq_table_valid(priv, ctx, lq))
-                ret = iwl_send_cmd(priv, &cmd);
+                ret = priv->trans.ops->send_cmd(priv, &cmd);
         else
                 ret = -EINVAL;
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-sv-open.c b/drivers/net/wireless/iwlwifi/iwl-sv-open.c
index c00aa5a1b8b8..6f92d22d07e3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sv-open.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sv-open.c
@@ -239,7 +239,7 @@ static int iwl_testmode_ucode(struct ieee80211_hw *hw, struct nlattr **tb)
         IWL_INFO(priv, "testmode ucode command ID 0x%x, flags 0x%x,"
                                 " len %d\n", cmd.id, cmd.flags, cmd.len[0]);
         /* ok, let's submit the command to ucode */
-        return iwl_send_cmd(priv, &cmd);
+        return priv->trans.ops->send_cmd(priv, &cmd);
 }
 
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c
index de627f9ae10a..5c5a489a21fb 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.c
@@ -66,6 +66,7 @@
 #include "iwl-helpers.h"
 /*TODO remove uneeded includes when the transport layer tx_free will be here */
 #include "iwl-agn.h"
+#include "iwl-core.h"
 
 static int iwl_trans_rx_alloc(struct iwl_priv *priv)
 {
@@ -559,6 +560,9 @@ static const struct iwl_trans_ops trans_ops = {
         .tx_init = iwl_trans_tx_init,
         .tx_stop = iwl_trans_tx_stop,
         .tx_free = iwl_trans_tx_free,
+
+        .send_cmd = iwl_send_cmd,
+        .send_cmd_pdu = iwl_send_cmd_pdu,
 };
 
 void iwl_trans_register(struct iwl_trans *trans)