Staging: add CSR wifi module

This consists of two modules, the driver, and a "helper" module that is
just a wrapper around common kernel functions.  The wrapper module will
be removed soon, but for now it's needed.

These files were based on the csr-linux-wifi-5.0.3-oss.tar.gz package
provided by CSR and Blue Giga, and is covered under the license
specified in the LICENSE.txt file (basically dual BSD and GPLv2).  The
files were flattened out of the deep directory mess they were originally
in, and a few EXPORT_SYMBOL_GPL() were added in order for everything to
link properly with the helper module setup.

Cc: Mikko Virkkilä <mikko.virkkila@bluegiga.com>
Cc: Lauri Hintsala <Lauri.Hintsala@bluegiga.com>
Cc: Riku Mettälä <riku.mettala@bluegiga.com>
Cc: Veli-Pekka Peltola <veli-pekka.peltola@bluegiga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 316 insertions, 0 deletions

diff --git a/drivers/staging/csr/sme_userspace.c b/drivers/staging/csr/sme_userspace.c
new file mode 100644
index 0000000..38df94b6
--- /dev/null
+++ b/drivers/staging/csr/sme_userspace.c
@@ -0,0 +1,316 @@
+/*
+ *****************************************************************************
+ *
+ * FILE : sme_userspace.c
+ *
+ * PURPOSE : Support functions for userspace SME helper application.
+ *
+ *
+ * Copyright (C) 2008-2011 by Cambridge Silicon Radio Ltd.
+ *
+ * Refer to LICENSE.txt included with this source code for details on
+ * the license terms.
+ *
+ *****************************************************************************
+ */
+
+#include "unifi_priv.h"
+
+/*
+ * Fix Me..... These need to be the correct values...
+ * Dynamic from the user space.
+ */
+CsrSchedQid CSR_WIFI_ROUTER_IFACEQUEUE   = 0xFFFF;
+CsrSchedQid CSR_WIFI_SME_IFACEQUEUE      = 0xFFFF;
+#ifdef CSR_SUPPORT_WEXT_AP
+CsrSchedQid CSR_WIFI_NME_IFACEQUEUE      = 0xFFFF;
+#endif
+int
+uf_sme_init(unifi_priv_t *priv)
+{
+    int i, j;
+
+    CsrWifiRouterTransportInit(priv);
+
+    priv->smepriv = priv;
+
+    init_waitqueue_head(&priv->sme_request_wq);
+
+    priv->filter_tclas_ies = NULL;
+    memset(&priv->packet_filters, 0, sizeof(uf_cfg_bcast_packet_filter_t));
+
+#ifdef CSR_SUPPORT_WEXT
+    priv->ignore_bssid_join = FALSE;
+    priv->mib_data.length = 0;
+
+    uf_sme_wext_set_defaults(priv);
+#endif /* CSR_SUPPORT_WEXT*/
+
+    priv->sta_ip_address = 0xFFFFFFFF;
+
+    priv->wifi_on_state = wifi_on_unspecified;
+
+    sema_init(&priv->sme_sem, 1);
+    memset(&priv->sme_reply, 0, sizeof(sme_reply_t));
+
+    priv->ta_ind_work.in_use = 0;
+    priv->ta_sample_ind_work.in_use = 0;
+
+    priv->CSR_WIFI_SME_IFACEQUEUE = 0xFFFF;
+
+    for (i = 0; i < MAX_MA_UNIDATA_IND_FILTERS; i++) {
+        priv->sme_unidata_ind_filters[i].in_use = 0;
+    }
+
+    /* Create a work queue item for Traffic Analysis indications to SME */
+    INIT_WORK(&priv->ta_ind_work.task, uf_ta_ind_wq);
+    INIT_WORK(&priv->ta_sample_ind_work.task, uf_ta_sample_ind_wq);
+#ifdef CSR_SUPPORT_WEXT
+    INIT_WORK(&priv->sme_config_task, uf_sme_config_wq);
+#endif
+
+    for (i = 0; i < CSR_WIFI_NUM_INTERFACES; i++) {
+        netInterface_priv_t *interfacePriv = priv->interfacePriv[i];
+        interfacePriv->m4_sent = FALSE;
+        interfacePriv->m4_bulk_data.net_buf_length = 0;
+        interfacePriv->m4_bulk_data.data_length = 0;
+        interfacePriv->m4_bulk_data.os_data_ptr = interfacePriv->m4_bulk_data.os_net_buf_ptr = NULL;
+
+        memset(&interfacePriv->controlled_data_port, 0, sizeof(unifi_port_config_t));
+        interfacePriv->controlled_data_port.entries_in_use = 1;
+        interfacePriv->controlled_data_port.port_cfg[0].in_use = TRUE;
+        interfacePriv->controlled_data_port.port_cfg[0].port_action = CSR_WIFI_ROUTER_CTRL_PORT_ACTION_8021X_PORT_CLOSED_DISCARD;
+        interfacePriv->controlled_data_port.overide_action = UF_DATA_PORT_OVERIDE;
+
+        memset(&interfacePriv->uncontrolled_data_port, 0, sizeof(unifi_port_config_t));
+        interfacePriv->uncontrolled_data_port.entries_in_use = 1;
+        interfacePriv->uncontrolled_data_port.port_cfg[0].in_use = TRUE;
+        interfacePriv->uncontrolled_data_port.port_cfg[0].port_action = CSR_WIFI_ROUTER_CTRL_PORT_ACTION_8021X_PORT_CLOSED_DISCARD;
+        interfacePriv->uncontrolled_data_port.overide_action = UF_DATA_PORT_OVERIDE;
+
+        /* Mark the remainder of the port config table as unallocated */
+        for(j = 1; j < UNIFI_MAX_CONNECTIONS; j++) {
+            interfacePriv->controlled_data_port.port_cfg[j].in_use = FALSE;
+            interfacePriv->controlled_data_port.port_cfg[j].port_action = CSR_WIFI_ROUTER_CTRL_PORT_ACTION_8021X_PORT_CLOSED_DISCARD;
+
+            interfacePriv->uncontrolled_data_port.port_cfg[j].in_use = FALSE;
+            interfacePriv->uncontrolled_data_port.port_cfg[j].port_action = CSR_WIFI_ROUTER_CTRL_PORT_ACTION_8021X_PORT_CLOSED_DISCARD;
+        }
+
+        /* intializing the lists */
+        INIT_LIST_HEAD(&interfacePriv->genericMgtFrames);
+        INIT_LIST_HEAD(&interfacePriv->genericMulticastOrBroadCastMgtFrames);
+        INIT_LIST_HEAD(&interfacePriv->genericMulticastOrBroadCastFrames);
+        INIT_LIST_HEAD(&interfacePriv->directedMaPktReq);
+
+        for(j = 0; j < UNIFI_MAX_CONNECTIONS; j++) {
+            interfacePriv->staInfo[j] = NULL;
+        }
+
+        interfacePriv->num_stations_joined = 0;
+        interfacePriv->sta_activity_check_enabled = FALSE;
+    }
+
+
+    return 0;
+} /* uf_sme_init() */
+
+
+void
+uf_sme_deinit(unifi_priv_t *priv)
+{
+    int i,j;
+    CsrUint8 ba_session_idx;
+    ba_session_rx_struct *ba_session_rx = NULL;
+    ba_session_tx_struct *ba_session_tx = NULL;
+    CsrWifiRouterCtrlStaInfo_t *staInfo = NULL;
+    netInterface_priv_t *interfacePriv = NULL;
+
+    /* Free any TCLASs previously allocated */
+    if (priv->packet_filters.tclas_ies_length) {
+        priv->packet_filters.tclas_ies_length = 0;
+        CsrPmemFree(priv->filter_tclas_ies);
+        priv->filter_tclas_ies = NULL;
+    }
+
+    for (i = 0; i < MAX_MA_UNIDATA_IND_FILTERS; i++) {
+        priv->sme_unidata_ind_filters[i].in_use = 0;
+    }
+
+    /* Remove all the Peer database, before going down */
+    for (i = 0; i < CSR_WIFI_NUM_INTERFACES; i++) {
+        spin_lock(&priv->ba_lock);
+        for(ba_session_idx=0; ba_session_idx < MAX_SUPPORTED_BA_SESSIONS_RX; ba_session_idx++){
+            ba_session_rx = priv->interfacePriv[i]->ba_session_rx[ba_session_idx];
+            if(ba_session_rx) {
+                blockack_session_stop(priv,
+                                    i,
+                                    CSR_WIFI_ROUTER_CTRL_BLOCK_ACK_RECIPIENT,
+                                    ba_session_rx->tID,
+                                    ba_session_rx->macAddress);
+            }
+        }
+        for(ba_session_idx=0; ba_session_idx < MAX_SUPPORTED_BA_SESSIONS_TX; ba_session_idx++){
+            ba_session_tx = priv->interfacePriv[i]->ba_session_tx[ba_session_idx];
+            if(ba_session_tx) {
+                blockack_session_stop(priv,
+                                    i,
+                                    CSR_WIFI_ROUTER_CTRL_BLOCK_ACK_ORIGINATOR,
+                                    ba_session_tx->tID,
+                                    ba_session_tx->macAddress);
+            }
+        }
+
+        spin_unlock(&priv->ba_lock);
+        interfacePriv = priv->interfacePriv[i];
+        if(interfacePriv){
+            for(j = 0; j < UNIFI_MAX_CONNECTIONS; j++) {
+                if ((staInfo=interfacePriv->staInfo[j]) != NULL) {
+                    /* Clear the STA activity parameters before freeing station Record */
+                    unifi_trace(priv, UDBG1, "uf_sme_deinit: Canceling work queue for STA with AID: %d\n", staInfo->aid);
+                    cancel_work_sync(&staInfo->send_disconnected_ind_task);
+                    staInfo->nullDataHostTag = INVALID_HOST_TAG;
+                }
+            }
+            if (interfacePriv->sta_activity_check_enabled){
+                interfacePriv->sta_activity_check_enabled = FALSE;
+                del_timer_sync(&interfacePriv->sta_activity_check_timer);
+            }
+        }
+        CsrWifiRouterCtrlInterfaceReset(priv, i);
+        priv->interfacePriv[i]->interfaceMode = CSR_WIFI_ROUTER_CTRL_MODE_NONE;
+    }
+
+
+} /* uf_sme_deinit() */
+
+
+
+
+
+/*
+ * ---------------------------------------------------------------------------
+ *  unifi_ta_indicate_protocol
+ *
+ *      Report that a packet of a particular type has been seen
+ *
+ *  Arguments:
+ *      drv_priv        The device context pointer passed to ta_init.
+ *      protocol        The protocol type enum value.
+ *      direction       Whether the packet was a tx or rx.
+ *      src_addr        The source MAC address from the data packet.
+ *
+ *  Returns:
+ *      None.
+ *
+ *  Notes:
+ *      We defer the actual sending to a background workqueue,
+ *      see uf_ta_ind_wq().
+ * ---------------------------------------------------------------------------
+ */
+void
+unifi_ta_indicate_protocol(void *ospriv,
+                           CsrWifiRouterCtrlTrafficPacketType packet_type,
+                           CsrWifiRouterCtrlProtocolDirection direction,
+                           const CsrWifiMacAddress *src_addr)
+{
+    unifi_priv_t *priv = (unifi_priv_t*)ospriv;
+
+    if (priv->ta_ind_work.in_use) {
+        unifi_warning(priv,
+                "unifi_ta_indicate_protocol: workqueue item still in use, not sending\n");
+        return;
+    }
+
+    if (CSR_WIFI_ROUTER_CTRL_PROTOCOL_DIRECTION_RX == direction)
+    {
+        CsrUint16 interfaceTag = 0;
+        CsrWifiRouterCtrlTrafficProtocolIndSend(priv->CSR_WIFI_SME_IFACEQUEUE,0,
+                interfaceTag,
+                packet_type,
+                direction,
+                *src_addr);
+    }
+    else
+    {
+        priv->ta_ind_work.packet_type = packet_type;
+        priv->ta_ind_work.direction = direction;
+        priv->ta_ind_work.src_addr = *src_addr;
+
+        queue_work(priv->unifi_workqueue, &priv->ta_ind_work.task);
+    }
+
+} /* unifi_ta_indicate_protocol() */
+
+
+/*
+ * ---------------------------------------------------------------------------
+ * unifi_ta_indicate_sampling
+ *
+ *      Send the TA sampling information to the SME.
+ *
+ *  Arguments:
+ *      drv_priv        The device context pointer passed to ta_init.
+ *      stats   The TA sampling data to send.
+ *
+ *  Returns:
+ *      None.
+ * ---------------------------------------------------------------------------
+ */
+void
+unifi_ta_indicate_sampling(void *ospriv, CsrWifiRouterCtrlTrafficStats *stats)
+{
+    unifi_priv_t *priv = (unifi_priv_t*)ospriv;
+
+    if (!priv) {
+        return;
+    }
+
+    if (priv->ta_sample_ind_work.in_use) {
+        unifi_warning(priv,
+                     "unifi_ta_indicate_sampling: workqueue item still in use, not sending\n");
+        return;
+    }
+
+    priv->ta_sample_ind_work.stats = *stats;
+
+    queue_work(priv->unifi_workqueue, &priv->ta_sample_ind_work.task);
+
+} /* unifi_ta_indicate_sampling() */
+
+
+/*
+ * ---------------------------------------------------------------------------
+ * unifi_ta_indicate_l4stats
+ *
+ *      Send the TA TCP/UDP throughput information to the driver.
+ *
+ *  Arguments:
+ *    drv_priv        The device context pointer passed to ta_init.
+ *    rxTcpThroughput TCP RX throughput in KiloBytes
+ *    txTcpThroughput TCP TX throughput in KiloBytes
+ *    rxUdpThroughput UDP RX throughput in KiloBytes
+ *    txUdpThroughput UDP TX throughput in KiloBytes
+ *
+ *  Returns:
+ *      None.
+ * ---------------------------------------------------------------------------
+ */
+void
+unifi_ta_indicate_l4stats(void *ospriv,
+                          CsrUint32 rxTcpThroughput,
+                          CsrUint32 txTcpThroughput,
+                          CsrUint32 rxUdpThroughput,
+                          CsrUint32 txUdpThroughput)
+{
+    unifi_priv_t *priv = (unifi_priv_t*)ospriv;
+
+    if (!priv) {
+        return;
+    }
+    /* Save the info. The actual action will be taken in unifi_ta_indicate_sampling() */
+    priv->rxTcpThroughput = rxTcpThroughput;
+    priv->txTcpThroughput = txTcpThroughput;
+    priv->rxUdpThroughput = rxUdpThroughput;
+    priv->txUdpThroughput = txUdpThroughput;
+} /* unifi_ta_indicate_l4stats() */