Staging: add rt2870 wireless driver

This is the Ralink RT2870 driver from the company that does horrible
things like reading a config file from /etc.  However, the driver that
is currently under development from the wireless development community
is not working at all yet, so distros and users are using this version
instead (quite common hardware on a lot of netbook machines).

So here is this driver, for now, until the wireless developers get a
"clean" version into the main tree, or until this version is cleaned up
sufficiently to move out of the staging tree.

Ported to the Linux build system and cleaned up a bit already by me.

Cc: Linux wireless <linux-wireless@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 166 insertions, 0 deletions

diff --git a/drivers/staging/rt2870/sta/auth_rsp.c b/drivers/staging/rt2870/sta/auth_rsp.c
new file mode 100644
index 000000000000..6e3c2d24cdad
--- /dev/null
+++ b/drivers/staging/rt2870/sta/auth_rsp.c
@@ -0,0 +1,166 @@
+/*
+ *************************************************************************
+ * Ralink Tech Inc.
+ * 5F., No.36, Taiyuan St., Jhubei City,
+ * Hsinchu County 302,
+ * Taiwan, R.O.C.
+ *
+ * (c) Copyright 2002-2007, Ralink Technology, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify  *
+ * it under the terms of the GNU General Public License as published by  *
+ * the Free Software Foundation; either version 2 of the License, or     *
+ * (at your option) any later version.                                   *
+ *                                                                       *
+ * 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.,                                       *
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *                                                                       *
+ *************************************************************************
+
+	Module Name:
+	auth_rsp.c
+
+	Abstract:
+
+	Revision History:
+	Who			When			What
+	--------	----------		----------------------------------------------
+	John		2004-10-1		copy from RT2560
+*/
+#include "../rt_config.h"
+
+/*
+    ==========================================================================
+    Description:
+        authentication state machine init procedure
+    Parameters:
+        Sm - the state machine
+
+	IRQL = PASSIVE_LEVEL
+
+    ==========================================================================
+ */
+VOID AuthRspStateMachineInit(
+    IN PRTMP_ADAPTER pAd,
+    IN PSTATE_MACHINE Sm,
+    IN STATE_MACHINE_FUNC Trans[])
+{
+    StateMachineInit(Sm, Trans, MAX_AUTH_RSP_STATE, MAX_AUTH_RSP_MSG, (STATE_MACHINE_FUNC)Drop, AUTH_RSP_IDLE, AUTH_RSP_MACHINE_BASE);
+
+    // column 1
+    StateMachineSetAction(Sm, AUTH_RSP_IDLE, MT2_PEER_DEAUTH, (STATE_MACHINE_FUNC)PeerDeauthAction);
+
+    // column 2
+    StateMachineSetAction(Sm, AUTH_RSP_WAIT_CHAL, MT2_PEER_DEAUTH, (STATE_MACHINE_FUNC)PeerDeauthAction);
+
+}
+
+/*
+    ==========================================================================
+    Description:
+
+	IRQL = DISPATCH_LEVEL
+
+    ==========================================================================
+*/
+VOID PeerAuthSimpleRspGenAndSend(
+    IN PRTMP_ADAPTER pAd,
+    IN PHEADER_802_11 pHdr80211,
+    IN USHORT Alg,
+    IN USHORT Seq,
+    IN USHORT Reason,
+    IN USHORT Status)
+{
+    HEADER_802_11     AuthHdr;
+    ULONG             FrameLen = 0;
+    PUCHAR            pOutBuffer = NULL;
+    NDIS_STATUS       NStatus;
+
+    if (Reason != MLME_SUCCESS)
+    {
+        DBGPRINT(RT_DEBUG_TRACE, ("Peer AUTH fail...\n"));
+        return;
+    }
+
+	//Get an unused nonpaged memory
+    NStatus = MlmeAllocateMemory(pAd, &pOutBuffer);
+    if (NStatus != NDIS_STATUS_SUCCESS)
+        return;
+
+    DBGPRINT(RT_DEBUG_TRACE, ("Send AUTH response (seq#2)...\n"));
+    MgtMacHeaderInit(pAd, &AuthHdr, SUBTYPE_AUTH, 0, pHdr80211->Addr2, pAd->MlmeAux.Bssid);
+    MakeOutgoingFrame(pOutBuffer,               &FrameLen,
+                      sizeof(HEADER_802_11),    &AuthHdr,
+                      2,                        &Alg,
+                      2,                        &Seq,
+                      2,                        &Reason,
+                      END_OF_ARGS);
+    MiniportMMRequest(pAd, 0, pOutBuffer, FrameLen);
+	MlmeFreeMemory(pAd, pOutBuffer);
+}
+
+/*
+    ==========================================================================
+    Description:
+
+	IRQL = DISPATCH_LEVEL
+
+    ==========================================================================
+*/
+VOID PeerDeauthAction(
+    IN PRTMP_ADAPTER pAd,
+    IN PMLME_QUEUE_ELEM Elem)
+{
+    UCHAR       Addr2[MAC_ADDR_LEN];
+    USHORT      Reason;
+
+    if (PeerDeauthSanity(pAd, Elem->Msg, Elem->MsgLen, Addr2, &Reason))
+    {
+        if (INFRA_ON(pAd) && MAC_ADDR_EQUAL(Addr2, pAd->CommonCfg.Bssid))
+        {
+            DBGPRINT(RT_DEBUG_TRACE,("AUTH_RSP - receive DE-AUTH from our AP (Reason=%d)\n", Reason));
+
+#ifdef NATIVE_WPA_SUPPLICANT_SUPPORT
+            {
+                union iwreq_data    wrqu;
+                memset(wrqu.ap_addr.sa_data, 0, MAC_ADDR_LEN);
+                wireless_send_event(pAd->net_dev, SIOCGIWAP, &wrqu, NULL);
+            }
+#endif // NATIVE_WPA_SUPPLICANT_SUPPORT //
+
+
+			// send wireless event - for deauthentication
+			if (pAd->CommonCfg.bWirelessEvent)
+				RTMPSendWirelessEvent(pAd, IW_DEAUTH_EVENT_FLAG, pAd->MacTab.Content[BSSID_WCID].Addr, BSS0, 0);
+
+            LinkDown(pAd, TRUE);
+
+            // Authentication Mode Cisco_LEAP has start a timer
+            // We should cancel it if using LEAP
+#ifdef LEAP_SUPPORT
+            if (pAd->StaCfg.LeapAuthMode == CISCO_AuthModeLEAP)
+            {
+                RTMPCancelTimer(&pAd->StaCfg.LeapAuthTimer, &TimerCancelled);
+                //Check is it mach the LEAP Authentication failed as possible a Rogue AP
+                //on it's PortSecured not equal to WPA_802_1X_PORT_SECURED while process the Authenticaton.
+                if ((pAd->StaCfg.PortSecured != WPA_802_1X_PORT_SECURED) && (pAd->Mlme.LeapMachine.CurrState != LEAP_IDLE))
+                {
+                    RogueApTableSetEntry(pAd, &pAd->StaCfg.RogueApTab, Addr2, LEAP_REASON_AUTH_TIMEOUT);
+                }
+            }
+#endif // LEAP_SUPPORT //
+        }
+    }
+    else
+    {
+        DBGPRINT(RT_DEBUG_TRACE,("AUTH_RSP - PeerDeauthAction() sanity check fail\n"));
+    }
+}
+