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tegrakernel/kernel/nvidia/drivers/net/wireless/bcmdhd/bcmevent.c

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/*
* bcmevent read-only data shared by kernel or app layers
*
* Copyright (C) 1999-2015, Broadcom Corporation
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
* $Id: bcmevent.c 492377 2014-07-21 19:54:06Z $
*/
#include <typedefs.h>
#include <bcmutils.h>
#include <bcmendian.h>
#include <proto/ethernet.h>
#include <proto/bcmeth.h>
#include <proto/bcmevent.h>
#include <proto/802.11.h>
/* Table of event name strings for UIs and debugging dumps */
typedef struct {
uint event;
const char *name;
} bcmevent_name_str_t;
/* Use the actual name for event tracing */
#define BCMEVENT_NAME(_event) {(_event), #_event}
static const bcmevent_name_str_t bcmevent_names[] = {
BCMEVENT_NAME(WLC_E_SET_SSID),
BCMEVENT_NAME(WLC_E_JOIN),
BCMEVENT_NAME(WLC_E_START),
BCMEVENT_NAME(WLC_E_AUTH),
BCMEVENT_NAME(WLC_E_AUTH_IND),
BCMEVENT_NAME(WLC_E_DEAUTH),
BCMEVENT_NAME(WLC_E_DEAUTH_IND),
BCMEVENT_NAME(WLC_E_ASSOC),
BCMEVENT_NAME(WLC_E_ASSOC_IND),
BCMEVENT_NAME(WLC_E_REASSOC),
BCMEVENT_NAME(WLC_E_REASSOC_IND),
BCMEVENT_NAME(WLC_E_DISASSOC),
BCMEVENT_NAME(WLC_E_DISASSOC_IND),
BCMEVENT_NAME(WLC_E_QUIET_START),
BCMEVENT_NAME(WLC_E_QUIET_END),
BCMEVENT_NAME(WLC_E_BEACON_RX),
BCMEVENT_NAME(WLC_E_LINK),
BCMEVENT_NAME(WLC_E_MIC_ERROR),
BCMEVENT_NAME(WLC_E_NDIS_LINK),
BCMEVENT_NAME(WLC_E_ROAM),
BCMEVENT_NAME(WLC_E_TXFAIL),
BCMEVENT_NAME(WLC_E_PMKID_CACHE),
BCMEVENT_NAME(WLC_E_RETROGRADE_TSF),
BCMEVENT_NAME(WLC_E_PRUNE),
BCMEVENT_NAME(WLC_E_AUTOAUTH),
BCMEVENT_NAME(WLC_E_EAPOL_MSG),
BCMEVENT_NAME(WLC_E_SCAN_COMPLETE),
BCMEVENT_NAME(WLC_E_ADDTS_IND),
BCMEVENT_NAME(WLC_E_DELTS_IND),
BCMEVENT_NAME(WLC_E_BCNSENT_IND),
BCMEVENT_NAME(WLC_E_BCNRX_MSG),
BCMEVENT_NAME(WLC_E_BCNLOST_MSG),
BCMEVENT_NAME(WLC_E_ROAM_PREP),
BCMEVENT_NAME(WLC_E_PFN_NET_FOUND),
BCMEVENT_NAME(WLC_E_PFN_NET_LOST),
#if defined(IBSS_PEER_DISCOVERY_EVENT)
BCMEVENT_NAME(WLC_E_IBSS_ASSOC),
#endif /* defined(IBSS_PEER_DISCOVERY_EVENT) */
BCMEVENT_NAME(WLC_E_RADIO),
BCMEVENT_NAME(WLC_E_PSM_WATCHDOG),
BCMEVENT_NAME(WLC_E_PROBREQ_MSG),
BCMEVENT_NAME(WLC_E_SCAN_CONFIRM_IND),
BCMEVENT_NAME(WLC_E_PSK_SUP),
BCMEVENT_NAME(WLC_E_COUNTRY_CODE_CHANGED),
BCMEVENT_NAME(WLC_E_EXCEEDED_MEDIUM_TIME),
BCMEVENT_NAME(WLC_E_ICV_ERROR),
BCMEVENT_NAME(WLC_E_UNICAST_DECODE_ERROR),
BCMEVENT_NAME(WLC_E_MULTICAST_DECODE_ERROR),
BCMEVENT_NAME(WLC_E_TRACE),
BCMEVENT_NAME(WLC_E_IF),
#ifdef WLP2P
BCMEVENT_NAME(WLC_E_P2P_DISC_LISTEN_COMPLETE),
#endif
BCMEVENT_NAME(WLC_E_RSSI),
BCMEVENT_NAME(WLC_E_PFN_SCAN_COMPLETE),
BCMEVENT_NAME(WLC_E_EXTLOG_MSG),
#ifdef WIFI_ACT_FRAME
BCMEVENT_NAME(WLC_E_ACTION_FRAME),
BCMEVENT_NAME(WLC_E_ACTION_FRAME_RX),
BCMEVENT_NAME(WLC_E_ACTION_FRAME_COMPLETE),
#endif
BCMEVENT_NAME(WLC_E_ESCAN_RESULT),
BCMEVENT_NAME(WLC_E_ACTION_FRAME_OFF_CHAN_COMPLETE),
#ifdef WLP2P
BCMEVENT_NAME(WLC_E_PROBRESP_MSG),
BCMEVENT_NAME(WLC_E_P2P_PROBREQ_MSG),
#endif
#ifdef PROP_TXSTATUS
BCMEVENT_NAME(WLC_E_FIFO_CREDIT_MAP),
#endif
BCMEVENT_NAME(WLC_E_WAKE_EVENT),
BCMEVENT_NAME(WLC_E_DCS_REQUEST),
BCMEVENT_NAME(WLC_E_RM_COMPLETE),
#ifdef WLMEDIA_HTSF
BCMEVENT_NAME(WLC_E_HTSFSYNC),
#endif
BCMEVENT_NAME(WLC_E_OVERLAY_REQ),
BCMEVENT_NAME(WLC_E_CSA_COMPLETE_IND),
BCMEVENT_NAME(WLC_E_EXCESS_PM_WAKE_EVENT),
BCMEVENT_NAME(WLC_E_PFN_SCAN_NONE),
BCMEVENT_NAME(WLC_E_PFN_SCAN_ALLGONE),
#ifdef SOFTAP
BCMEVENT_NAME(WLC_E_GTK_PLUMBED),
#endif
BCMEVENT_NAME(WLC_E_ASSOC_REQ_IE),
BCMEVENT_NAME(WLC_E_ASSOC_RESP_IE),
BCMEVENT_NAME(WLC_E_BEACON_FRAME_RX),
#ifdef WLTDLS
BCMEVENT_NAME(WLC_E_TDLS_PEER_EVENT),
#endif /* WLTDLS */
BCMEVENT_NAME(WLC_E_NATIVE),
#ifdef WLPKTDLYSTAT
BCMEVENT_NAME(WLC_E_PKTDELAY_IND),
#endif /* WLPKTDLYSTAT */
BCMEVENT_NAME(WLC_E_SERVICE_FOUND),
BCMEVENT_NAME(WLC_E_GAS_FRAGMENT_RX),
BCMEVENT_NAME(WLC_E_GAS_COMPLETE),
BCMEVENT_NAME(WLC_E_P2PO_ADD_DEVICE),
BCMEVENT_NAME(WLC_E_P2PO_DEL_DEVICE),
#ifdef WLWNM
BCMEVENT_NAME(WLC_E_WNM_STA_SLEEP),
#endif /* WLWNM */
#if defined(WL_PROXDETECT)
BCMEVENT_NAME(WLC_E_PROXD),
#endif
BCMEVENT_NAME(WLC_E_CCA_CHAN_QUAL),
BCMEVENT_NAME(WLC_E_BSSID),
#ifdef PROP_TXSTATUS
BCMEVENT_NAME(WLC_E_BCMC_CREDIT_SUPPORT),
#endif
BCMEVENT_NAME(WLC_E_TXFAIL_THRESH),
#ifdef WLBSSLOAD_REPORT
BCMEVENT_NAME(WLC_E_BSS_LOAD),
#endif
#if defined(BT_WIFI_HANDOVER) || defined(WL_TBOW)
BCMEVENT_NAME(WLC_E_BT_WIFI_HANDOVER_REQ),
#endif
BCMEVENT_NAME(WLC_E_RMC_EVENT),
};
const char *bcmevent_get_name(uint event_type)
{
/* note: first coded this as a static const but some
* ROMs already have something called event_name so
* changed it so we don't have a variable for the
* 'unknown string
*/
const char *event_name = NULL;
uint idx;
for (idx = 0; idx < (uint)ARRAYSIZE(bcmevent_names); idx++) {
if (bcmevent_names[idx].event == event_type) {
event_name = bcmevent_names[idx].name;
break;
}
}
/* if we find an event name in the array, return it.
* otherwise return unknown string.
*/
return ((event_name) ? event_name : "Unknown Event");
}
/*
* Validate if the event is proper and if valid copy event header to event.
* If proper event pointer is passed, to just validate, pass NULL to event.
*
* Return values are
* BCME_OK - It is a BRCM event or BRCM dongle event
* BCME_NOTFOUND - Not BRCM, not an event, may be okay
* BCME_BADLEN - Bad length, should not process, just drop
*/
int
is_wlc_event_frame(void *pktdata, uint pktlen, uint16 exp_usr_subtype,
bcm_event_msg_u_t *out_event)
{
uint16 evlen;
uint16 subtype;
uint16 usr_subtype;
bcm_event_t *bcm_event;
uint8 *pktend;
uint8 *evend;
int err = BCME_OK;
uint32 data_len;
pktend = (uint8 *)pktdata + pktlen;
bcm_event = (bcm_event_t *)pktdata;
/* only care about 16-bit subtype / length versions */
if ((uint8 *)&bcm_event->bcm_hdr < pktend) {
uint8 short_subtype = *(uint8 *)&bcm_event->bcm_hdr;
if (!(short_subtype & 0x80)) {
err = BCME_NOTFOUND;
goto done;
}
}
/* must have both ether_header and bcmeth_hdr */
if (pktlen < OFFSETOF(bcm_event_t, event)) {
err = BCME_BADLEN;
goto done;
}
/* check length in bcmeth_hdr */
evlen = ntoh16_ua((void *)&bcm_event->bcm_hdr.length);
evend = (uint8 *)&bcm_event->bcm_hdr.version + evlen;
#ifdef EXT_STA
if (evend != pktend) {
err = BCME_BADLEN;
goto done;
}
#endif /* EXT_STA */
/* match on subtype, oui and usr subtype for BRCM events */
subtype = ntoh16_ua((void *)&bcm_event->bcm_hdr.subtype);
if (subtype != BCMILCP_SUBTYPE_VENDOR_LONG) {
err = BCME_NOTFOUND;
goto done;
}
if (bcmp(BRCM_OUI, &bcm_event->bcm_hdr.oui[0], DOT11_OUI_LEN)) {
err = BCME_NOTFOUND;
goto done;
}
/* if it is a bcm_event or bcm_dngl_event_t, validate it */
usr_subtype = ntoh16_ua((void *)&bcm_event->bcm_hdr.usr_subtype);
switch (usr_subtype) {
case BCMILCP_BCM_SUBTYPE_EVENT:
if ((pktlen < sizeof(bcm_event_t)) ||
(evend < ((uint8 *)bcm_event + sizeof(bcm_event_t)))) {
err = BCME_BADLEN;
goto done;
}
data_len = ntoh32_ua((void *)&bcm_event->event.datalen);
if ((sizeof(bcm_event_t) + data_len +
BCMILCP_BCM_SUBTYPE_EVENT_DATA_PAD) != pktlen) {
err = BCME_BADLEN;
goto done;
}
if (exp_usr_subtype && (exp_usr_subtype != usr_subtype)) {
err = BCME_NOTFOUND;
goto done;
}
if (out_event) {
/* ensure BRCM event pkt aligned */
memcpy(&out_event->event, &bcm_event->event, sizeof(wl_event_msg_t));
}
break;
default:
err = BCME_NOTFOUND;
goto done;
}
done:
return err;
}
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