- struct mrvlietypes_numprobes *pnumprobestlv;
- struct mrvlietypes_ssidparamset *pssidtlv;
- struct wlan_scan_cmd_config * pscancfgout = NULL;
- u8 *ptlvpos;
- u16 numprobes;
- int chanidx;
- int scantype;
- int scandur;
- int channel;
- int radiotype;
-
- lbs_deb_enter(LBS_DEB_SCAN);
-
- pscancfgout = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL);
- if (pscancfgout == NULL)
- goto out;
-
- /* The tlvbufferlen is calculated for each scan command. The TLVs added
- * in this routine will be preserved since the routine that sends
- * the command will append channelTLVs at *ppchantlvout. The difference
- * between the *ppchantlvout and the tlvbuffer start will be used
- * to calculate the size of anything we add in this routine.
- */
- pscancfgout->tlvbufferlen = 0;
-
- /* Running tlv pointer. Assigned to ppchantlvout at end of function
- * so later routines know where channels can be added to the command buf
- */
- ptlvpos = pscancfgout->tlvbuffer;
-
- /*
- * Set the initial scan paramters for progressive scanning. If a specific
- * BSSID or SSID is used, the number of channels in the scan command
- * will be increased to the absolute maximum
- */
- *pmaxchanperscan = MRVDRV_CHANNELS_PER_SCAN_CMD;
-
- /* Initialize the scan as un-filtered by firmware, set to TRUE below if
- * a SSID or BSSID filter is sent in the command
- */
- *pfilteredscan = 0;
-
- /* Initialize the scan as not being only on the current channel. If
- * the channel list is customized, only contains one channel, and
- * is the active channel, this is set true and data flow is not halted.
- */
- *pscancurrentonly = 0;
-
- if (puserscanin) {
- /* Set the bss type scan filter, use adapter setting if unset */
- pscancfgout->bsstype =
- puserscanin->bsstype ? puserscanin->bsstype : CMD_BSS_TYPE_ANY;
-
- /* Set the number of probes to send, use adapter setting if unset */
- numprobes = puserscanin->numprobes ? puserscanin->numprobes : 0;
-
- /*
- * Set the BSSID filter to the incoming configuration,
- * if non-zero. If not set, it will remain disabled (all zeros).
- */
- memcpy(pscancfgout->bssid, puserscanin->bssid,
- sizeof(pscancfgout->bssid));
-
- if (puserscanin->ssid_len) {
- pssidtlv =
- (struct mrvlietypes_ssidparamset *) pscancfgout->
- tlvbuffer;
- pssidtlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
- pssidtlv->header.len = cpu_to_le16(puserscanin->ssid_len);
- memcpy(pssidtlv->ssid, puserscanin->ssid,
- puserscanin->ssid_len);
- ptlvpos += sizeof(pssidtlv->header) + puserscanin->ssid_len;
- }
-
- /*
- * The default number of channels sent in the command is low to
- * ensure the response buffer from the firmware does not truncate
- * scan results. That is not an issue with an SSID or BSSID
- * filter applied to the scan results in the firmware.
- */
- if ( puserscanin->ssid_len
- || (compare_ether_addr(pscancfgout->bssid, &zeromac[0]) != 0)) {
- *pmaxchanperscan = MRVDRV_MAX_CHANNELS_PER_SCAN;
- *pfilteredscan = 1;
- }
- } else {
- pscancfgout->bsstype = CMD_BSS_TYPE_ANY;
- numprobes = 0;
- }
-
- /* If the input config or adapter has the number of Probes set, add tlv */
- if (numprobes) {
- pnumprobestlv = (struct mrvlietypes_numprobes *) ptlvpos;
- pnumprobestlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES);
- pnumprobestlv->header.len = cpu_to_le16(2);
- pnumprobestlv->numprobes = cpu_to_le16(numprobes);
-
- ptlvpos += sizeof(*pnumprobestlv);
- }
-
- /*
- * Set the output for the channel TLV to the address in the tlv buffer
- * past any TLVs that were added in this fuction (SSID, numprobes).
- * channel TLVs will be added past this for each scan command, preserving
- * the TLVs that were previously added.
- */
- *ppchantlvout = (struct mrvlietypes_chanlistparamset *) ptlvpos;
-
- if (!puserscanin || !puserscanin->chanlist[0].channumber) {
- /* Create a default channel scan list */
- lbs_deb_scan("creating full region channel list\n");
- wlan_scan_create_channel_list(priv, pscanchanlist,
- *pfilteredscan);
- goto out;
- }
-
- for (chanidx = 0;
- chanidx < WLAN_IOCTL_USER_SCAN_CHAN_MAX
- && puserscanin->chanlist[chanidx].channumber; chanidx++) {
-
- channel = puserscanin->chanlist[chanidx].channumber;
- (pscanchanlist + chanidx)->channumber = channel;
-
- radiotype = puserscanin->chanlist[chanidx].radiotype;
- (pscanchanlist + chanidx)->radiotype = radiotype;
-
- scantype = puserscanin->chanlist[chanidx].scantype;
-
- if (scantype == CMD_SCAN_TYPE_PASSIVE) {
- (pscanchanlist +
- chanidx)->chanscanmode.passivescan = 1;
- } else {
- (pscanchanlist +
- chanidx)->chanscanmode.passivescan = 0;
- }
-
- if (puserscanin->chanlist[chanidx].scantime) {
- scandur = puserscanin->chanlist[chanidx].scantime;
- } else {
- if (scantype == CMD_SCAN_TYPE_PASSIVE) {
- scandur = MRVDRV_PASSIVE_SCAN_CHAN_TIME;
- } else {
- scandur = MRVDRV_ACTIVE_SCAN_CHAN_TIME;
- }
- }
-
- (pscanchanlist + chanidx)->minscantime =
- cpu_to_le16(scandur);
- (pscanchanlist + chanidx)->maxscantime =
- cpu_to_le16(scandur);
- }
-
- /* Check if we are only scanning the current channel */
- if ((chanidx == 1) &&
- (puserscanin->chanlist[0].channumber ==
- priv->adapter->curbssparams.channel)) {
- *pscancurrentonly = 1;
- lbs_deb_scan("scanning current channel only");
- }
-
-out:
- return pscancfgout;