/**
* This file contains functions for 802.11D.
*/
#include <linux/ctype.h>
#include <linux/kernel.h>
#include <linux/wireless.h>
#include "host.h"
#include "decl.h"
#include "11d.h"
#include "dev.h"
#include "wext.h"
#define TX_PWR_DEFAULT 10
static struct region_code_mapping region_code_mapping[] = {
{"US ", 0x10}, /* US FCC */
{"CA ", 0x10}, /* IC Canada */
{"SG ", 0x10}, /* Singapore */
{"EU ", 0x30}, /* ETSI */
{"AU ", 0x30}, /* Australia */
{"KR ", 0x30}, /* Republic Of Korea */
{"ES ", 0x31}, /* Spain */
{"FR ", 0x32}, /* France */
{"JP ", 0x40}, /* Japan */
};
/* Following 2 structure defines the supported channels */
static struct chan_freq_power channel_freq_power_UN_BG[] = {
{1, 2412, TX_PWR_DEFAULT},
{2, 2417, TX_PWR_DEFAULT},
{3, 2422, TX_PWR_DEFAULT},
{4, 2427, TX_PWR_DEFAULT},
{5, 2432, TX_PWR_DEFAULT},
{6, 2437, TX_PWR_DEFAULT},
{7, 2442, TX_PWR_DEFAULT},
{8, 2447, TX_PWR_DEFAULT},
{9, 2452, TX_PWR_DEFAULT},
{10, 2457, TX_PWR_DEFAULT},
{11, 2462, TX_PWR_DEFAULT},
{12, 2467, TX_PWR_DEFAULT},
{13, 2472, TX_PWR_DEFAULT},
{14, 2484, TX_PWR_DEFAULT}
};
static u8 wlan_region_2_code(u8 * region)
{
u8 i;
u8 size = sizeof(region_code_mapping)/
sizeof(struct region_code_mapping);
for (i = 0; region[i] && i < COUNTRY_CODE_LEN; i++)
region[i] = toupper(region[i]);
for (i = 0; i < size; i++) {
if (!memcmp(region, region_code_mapping[i].region,
COUNTRY_CODE_LEN))
return (region_code_mapping[i].code);
}
/* default is US */
return (region_code_mapping[0].code);
}
static u8 *wlan_code_2_region(u8 code)
{
u8 i;
u8 size = sizeof(region_code_mapping)
/ sizeof(struct region_code_mapping);
for (i = 0; i < size; i++) {
if (region_code_mapping[i].code == code)
return (region_code_mapping[i].region);
}
/* default is US */
return (region_code_mapping[0].region);
}
/**
* @brief This function finds the nrchan-th chan after the firstchan
* @param band band
* @param firstchan first channel number
* @param nrchan number of channels
* @return the nrchan-th chan number
*/
static u8 wlan_get_chan_11d(u8 band, u8 firstchan, u8 nrchan, u8 * chan)
/*find the nrchan-th chan after the firstchan*/
{
u8 i;
struct chan_freq_power *cfp;
u8 cfp_no;
cfp = channel_freq_power_UN_BG;
cfp_no = sizeof(channel_freq_power_UN_BG) /
sizeof(struct chan_freq_power);
for (i = 0; i < cfp_no; i++) {
if ((cfp + i)->channel == firstchan) {
lbs_pr_debug(1, "firstchan found\n");
break;
}
}
if (i < cfp_no) {
/*if beyond the boundary */
if (i + nrchan < cfp_no) {
*chan = (cfp + i + nrchan)->channel;
return 1;
}
}
return 0;
}
/**
* @brief This function Checks if chan txpwr is learned from AP/IBSS
* @param chan chan number
* @param parsed_region_chan pointer to parsed_region_chan_11d
* @return TRUE; FALSE
*/
static u8 wlan_channel_known_11d(u8 chan,
struct parsed_region_chan_11d * parsed_region_chan)
{
struct chan_power_11d *chanpwr = parsed_region_chan->chanpwr;
u8 nr_chan = parsed_region_chan->nr_chan;
u8 i = 0;
lbs_dbg_hex("11D:parsed_region_chan:", (char *)chanpwr,
sizeof(struct chan_power_11d) * nr_chan);
for (i = 0; i < nr_chan; i++) {
if (chan == chanpwr[i].chan) {
lbs_pr_debug(1, "11D: Found Chan:%d\n", chan);
return 1;
}
}
lbs_pr_debug(1, "11D: Not Find Chan:%d\n", chan);
return 0;
}
u32 libertas_chan_2_freq(u8 chan, u8 band)
{
struct chan_freq_power *cf;
u16 cnt;
u16 i;
u32 freq = 0;
cf = channel_freq_power_UN_BG;
cnt =
sizeof(channel_freq_power_UN_BG) /
sizeof(struct chan_freq_power);
for (i = 0; i < cnt; i++) {
if (chan == cf[i].channel)
freq = cf[i].freq;
}
return freq;
}
static int generate_domain_info_11d(struct parsed_region_chan_11d
*parsed_region_chan,
struct wlan_802_11d_domain_reg * domaininfo)
{
u8 nr_subband = 0;
u8 nr_chan = parsed_region_chan->nr_chan;
u8 nr_parsedchan = 0;
u8 firstchan = 0, nextchan = 0, maxpwr = 0;
u8 i, flag = 0;
memcpy(domaininfo->countrycode, parsed_region_chan->countrycode,
COUNTRY_CODE_LEN);
lbs_pr_debug(1, "11D:nrchan=%d\n", nr_chan);
lbs_dbg_hex("11D:parsed_region_chan:", (char *)parsed_region_chan,
sizeof(struct parsed_region_chan_11d));
for (i = 0; i < nr_chan; i++) {
if (!flag) {
flag = 1;
nextchan = firstchan =
parsed_region_chan->chanpwr[i].chan;
maxpwr = parsed_region_chan->chanpwr[i].pwr;
nr_parsedchan = 1;
continue;
}
if (parsed_region_chan->chanpwr[i].chan == nextchan + 1 &&
parsed_region_chan->chanpwr[i].pwr == maxpwr) {
nextchan++;
nr_parsedchan++;
} else {
domaininfo->subband[nr_subband].firstchan = firstchan;
domaininfo->subband[nr_subband].nrchan =
nr_parsedchan;
domaininfo->subband[nr_subband].maxtxpwr = maxpwr;
nr_subband++;
nextchan = firstchan =
parsed_region_chan->chanpwr[i].chan;
maxpwr = parsed_region_chan->chanpwr[i].pwr;
}
}
if (flag) {
domaininfo->subband[nr_subband].firstchan = firstchan;
domaininfo->subband[nr_subband].nrchan = nr_parsedchan;
domaininfo->subband[nr_subband].maxtxpwr = maxpwr;
nr_subband++;
}
domaininfo->nr_subband = nr_subband;
lbs_pr_debug(1, "nr_subband=%x\n", domaininfo->nr_subband);
lbs_dbg_hex("11D:domaininfo:", (char *)domaininfo,
COUNTRY_CODE_LEN + 1 +
sizeof(struct ieeetypes_subbandset) * nr_subband);
return 0;
}
/**
* @brief This function generates parsed_region_chan from Domain Info learned from AP/IBSS
* @param region_chan pointer to struct region_channel
* @param *parsed_region_chan pointer to parsed_region_chan_11d
* @return N/A
*/
static void wlan_generate_parsed_region_chan_11d(struct region_channel * region_chan,
struct parsed_region_chan_11d *
parsed_region_chan)
{
u8 i;
struct chan_freq_power *cfp;
if (region_chan == NULL) {
lbs_pr_debug(1, "11D: region_chan is NULL\n");
return;
}
cfp = region_chan->CFP;
if (cfp == NULL) {
lbs_pr_debug(1, "11D: cfp equal NULL \n");
return;
}
parsed_region_chan->band = region_chan->band;
parsed_region_chan->region = region_chan->region;
memcpy(parsed_region_chan->countrycode,
wlan_code_2_region(region_chan->region), COUNTRY_CODE_LEN);
lbs_pr_debug(1, "11D: region[0x%x] band[%d]\n", parsed_region_chan->region,
parsed_region_chan->band);
for (i = 0; i < region_chan->nrcfp; i++, cfp++) {
parsed_region_chan->chanpwr[i].chan = cfp->channel;
parsed_region_chan->chanpwr[i].pwr = cfp->maxtxpower;
lbs_pr_debug(1, "11D: Chan[%d] Pwr[%d]\n",
parsed_region_chan->chanpwr[i].chan,
parsed_region_chan->chanpwr[i].pwr);
}
parsed_region_chan->nr_chan = region_chan->nrcfp;
lbs_pr_debug(1, "11D: nrchan[%d]\n", parsed_region_chan->nr_chan);
return;
}
/**
* @brief generate parsed_region_chan from Domain Info learned from AP/IBSS
* @param region region ID
* @param band band
* @param chan chan
* @return TRUE;FALSE
*/
static u8 wlan_region_chan_supported_11d(u8 region, u8 band, u8 chan)
{
struct chan_freq_power *cfp;
int cfp_no;
u8 idx;
ENTER();
cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
if (cfp == NULL)
return 0;
for (idx = 0; idx < cfp_no; idx++) {
if (chan == (cfp + idx)->channel) {
/* If Mrvl Chip Supported? */
if ((cfp + idx)->unsupported) {
return 0;
} else {
return 1;
}
}
}
/*chan is not in the region table */
LEAVE();
return 0;
}
/**
* @brief This function checks if chan txpwr is learned from AP/IBSS
* @param chan chan number
* @param parsed_region_chan pointer to parsed_region_chan_11d
* @return 0
*/
static int parse_domain_info_11d(struct ieeetypes_countryinfofullset*
countryinfo,
u8 band,
struct parsed_region_chan_11d *
parsed_region_chan)
{
u8 nr_subband, nrchan;
u8 lastchan, firstchan;
u8 region;
u8 curchan = 0;
u8 idx = 0; /*chan index in parsed_region_chan */
u8 j, i;
ENTER();
/*validation Rules:
1. valid region Code
2. First Chan increment
3. channel range no overlap
4. channel is valid?
5. channel is supported by region?
6. Others
*/
lbs_dbg_hex("CountryInfo:", (u8 *) countryinfo, 30);
if ((*(countryinfo->countrycode)) == 0
|| (countryinfo->len <= COUNTRY_CODE_LEN)) {
/* No region Info or Wrong region info: treat as No 11D info */
LEAVE();
return 0;
}
/*Step1: check region_code */
parsed_region_chan->region = region =
wlan_region_2_code(countryinfo->countrycode);
lbs_pr_debug(1, "regioncode=%x\n", (u8) parsed_region_chan->region);
lbs_dbg_hex("CountryCode:", (char *)countryinfo->countrycode,
COUNTRY_CODE_LEN);
parsed_region_chan->band = band;
memcpy(parsed_region_chan->countrycode, countryinfo->countrycode,
COUNTRY_CODE_LEN);
nr_subband = (countryinfo->len - COUNTRY_CODE_LEN) /
sizeof(struct ieeetypes_subbandset);
for (j = 0, lastchan = 0; j < nr_subband; j++) {
if (countryinfo->subband[j].firstchan <= lastchan) {
/*Step2&3. Check First Chan Num increment and no overlap */
lbs_pr_debug(1, "11D: Chan[%d>%d] Overlap\n",
countryinfo->subband[j].firstchan, lastchan);
continue;
}
firstchan = countryinfo->subband[j].firstchan;
nrchan = countryinfo->subband[j].nrchan;
for (i = 0; idx < MAX_NO_OF_CHAN && i < nrchan; i++) {
/*step4: channel is supported? */
if (!wlan_get_chan_11d(band, firstchan, i, &curchan)) {
/* Chan is not found in UN table */
lbs_pr_debug(1, "chan is not supported: %d \n", i);
break;
}
lastchan = curchan;
if (wlan_region_chan_supported_11d
(region, band, curchan)) {
/*step5: Check if curchan is supported by mrvl in region */
parsed_region_chan->chanpwr[idx].chan = curchan;
parsed_region_chan->chanpwr[idx].pwr =
countryinfo->subband[j].maxtxpwr;
idx++;
} else {
/*not supported and ignore the chan */
lbs_pr_debug(1,
"11D:i[%d] chan[%d] unsupported in region[%x] band[%d]\n",
i, curchan, region, band);
}
}
/*Step6: Add other checking if any */
}
parsed_region_chan->nr_chan = idx;
lbs_pr_debug(1, "nrchan=%x\n", parsed_region_chan->nr_chan);
lbs_dbg_hex("11D:parsed_region_chan:", (u8 *) parsed_region_chan,
2 + COUNTRY_CODE_LEN + sizeof(struct parsed_region_chan_11d) * idx);
LEAVE();
return 0;
}
/**
* @brief This function calculates the scan type for channels
* @param chan chan number
* @param parsed_region_chan pointer to parsed_region_chan_11d
* @return PASSIVE if chan is unknown; ACTIVE if chan is known
*/
u8 libertas_get_scan_type_11d(u8 chan,
struct parsed_region_chan_11d * parsed_region_chan)
{
u8 scan_type = cmd_scan_type_passive;
ENTER();
if (wlan_channel_known_11d(chan, parsed_region_chan)) {
lbs_pr_debug(1, "11D: Found and do Active Scan\n");
scan_type = cmd_scan_type_active;
} else {
lbs_pr_debug(1, "11D: Not Find and do Passive Scan\n");
}
LEAVE();
return scan_type;
}
void libertas_init_11d(wlan_private * priv)
{
priv->adapter->enable11d = 0;
memset(&(priv->adapter->parsed_region_chan), 0,
sizeof(struct parsed_region_chan_11d));
return;
}
static int wlan_enable_11d(wlan_private * priv, u8 flag)
{
int ret;
priv->adapter->enable11d = flag;
/* send cmd to FW to enable/disable 11D function in FW */
ret = libertas_prepare_and_send_command(priv,
cmd_802_11_snmp_mib,
cmd_act_set,
cmd_option_waitforrsp,
OID_802_11D_ENABLE,
&priv->adapter->enable11d);
if (ret)
lbs_pr_debug(1, "11D: Fail to enable 11D \n");
return 0;
}
/**
* @brief This function sets DOMAIN INFO to FW
* @param priv pointer to wlan_private
* @return 0; -1
*/
static int set_domain_info_11d(wlan_private * priv)
{
int ret;
if (!priv->adapter->enable11d) {
lbs_pr_debug(1, "11D: dnld domain Info with 11d disabled\n");
return 0;
}
ret = libertas_prepare_and_send_command(priv, cmd_802_11d_domain_info,
cmd_act_set,
cmd_option_waitforrsp, 0, NULL);
if (ret)
lbs_pr_debug(1, "11D: Fail to dnld domain Info\n");
return ret;
}
/**
* @brief This function setups scan channels
* @param priv pointer to wlan_private
* @param band band
* @return 0
*/
int libertas_set_universaltable(wlan_private * priv, u8 band)
{
wlan_adapter *adapter = priv->adapter;
u16 size = sizeof(struct chan_freq_power);
u16 i = 0;
memset(adapter->universal_channel, 0,
sizeof(adapter->universal_channel));
adapter->universal_channel[i].nrcfp =
sizeof(channel_freq_power_UN_BG) / size;
lbs_pr_debug(1, "11D: BG-band nrcfp=%d\n",
adapter->universal_channel[i].nrcfp);
adapter->universal_channel[i].CFP = channel_freq_power_UN_BG;
adapter->universal_channel[i].valid = 1;
adapter->universal_channel[i].region = UNIVERSAL_REGION_CODE;
adapter->universal_channel[i].band = band;
i++;
return 0;
}
/**
* @brief This function implements command CMD_802_11D_DOMAIN_INFO
* @param priv pointer to wlan_private
* @param cmd pointer to cmd buffer
* @param cmdno cmd ID
* @param cmdOption cmd action
* @return 0
*/
int libertas_cmd_802_11d_domain_info(wlan_private * priv,
struct cmd_ds_command *cmd, u16 cmdno,
u16 cmdoption)
{
struct cmd_ds_802_11d_domain_info *pdomaininfo =
&cmd->params.domaininfo;
struct mrvlietypes_domainparamset *domain = &pdomaininfo->domain;
wlan_adapter *adapter = priv->adapter;
u8 nr_subband = adapter->domainreg.nr_subband;
ENTER();
lbs_pr_debug(1, "nr_subband=%x\n", nr_subband);
cmd->command = cpu_to_le16(cmdno);
pdomaininfo->action = cpu_to_le16(cmdoption);
if (cmdoption == cmd_act_get) {
cmd->size =
cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
lbs_dbg_hex("11D: 802_11D_DOMAIN_INFO:", (u8 *) cmd,
(int)(cmd->size));
LEAVE();
return 0;
}
domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
memcpy(domain->countrycode, adapter->domainreg.countrycode,
sizeof(domain->countrycode));
domain->header.len =
cpu_to_le16(nr_subband * sizeof(struct ieeetypes_subbandset) +
sizeof(domain->countrycode));
if (nr_subband) {
memcpy(domain->subband, adapter->domainreg.subband,
nr_subband * sizeof(struct ieeetypes_subbandset));
cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
domain->header.len +
sizeof(struct mrvlietypesheader) +
S_DS_GEN);
} else {
cmd->size =
cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
}
lbs_dbg_hex("11D:802_11D_DOMAIN_INFO:", (u8 *) cmd, (int)(cmd->size));
LEAVE();
return 0;
}
/**
* @brief This function implements private cmd: enable/disable 11D
* @param priv pointer to wlan_private
* @param wrq pointer to user data
* @return 0 or -1
*/
int libertas_cmd_enable_11d(wlan_private * priv, struct iwreq *wrq)
{
int data = 0;
int *val;
ENTER();
data = SUBCMD_DATA(wrq);
lbs_pr_debug(1, "enable 11D: %s\n",
(data == 1) ? "enable" : "Disable");
wlan_enable_11d(priv, data);
val = (int *)wrq->u.name;
*val = priv->adapter->enable11d;
LEAVE();
return 0;
}
/**
* @brief This function parses countryinfo from AP and download country info to FW
* @param priv pointer to wlan_private
* @param resp pointer to command response buffer
* @return 0; -1
*/
int libertas_ret_802_11d_domain_info(wlan_private * priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11d_domain_info
*domaininfo = &resp->params.domaininforesp;
struct mrvlietypes_domainparamset *domain = &domaininfo->domain;
u16 action = le16_to_cpu(domaininfo->action);
s16 ret = 0;
u8 nr_subband = 0;
ENTER();
lbs_dbg_hex("11D DOMAIN Info Rsp Data:", (u8 *) resp,
(int)le16_to_cpu(resp->size));
nr_subband = (domain->header.len - 3) / sizeof(struct ieeetypes_subbandset);
/* countrycode 3 bytes */
lbs_pr_debug(1, "11D Domain Info Resp: nr_subband=%d\n", nr_subband);
if (nr_subband > MRVDRV_MAX_SUBBAND_802_11D) {
lbs_pr_debug(1, "Invalid Numrer of Subband returned!!\n");
return -1;
}
switch (action) {
case cmd_act_set: /*Proc Set action */
break;
case cmd_act_get:
break;
default:
lbs_pr_debug(1, "Invalid action:%d\n", domaininfo->action);
ret = -1;
break;
}
LEAVE();
return ret;
}
/**
* @brief This function parses countryinfo from AP and download country info to FW
* @param priv pointer to wlan_private
* @return 0; -1
*/
int libertas_parse_dnld_countryinfo_11d(wlan_private * priv)
{
int ret;
wlan_adapter *adapter = priv->adapter;
ENTER();
if (priv->adapter->enable11d) {
memset(&adapter->parsed_region_chan, 0,
sizeof(struct parsed_region_chan_11d));
ret = parse_domain_info_11d(&adapter->pattemptedbssdesc->
countryinfo, 0,
&adapter->parsed_region_chan);
if (ret == -1) {
lbs_pr_debug(1, "11D: Err Parse domain_info from AP..\n");
LEAVE();
return ret;
}
memset(&adapter->domainreg, 0,
sizeof(struct wlan_802_11d_domain_reg));
generate_domain_info_11d(&adapter->parsed_region_chan,
&adapter->domainreg);
ret = set_domain_info_11d(priv);
if (ret) {
lbs_pr_debug(1, "11D: Err set domainInfo to FW\n");
LEAVE();
return ret;
}
}
LEAVE();
return 0;
}
/**
* @brief This function generates 11D info from user specified regioncode and download to FW
* @param priv pointer to wlan_private
* @return 0; -1
*/
int libertas_create_dnld_countryinfo_11d(wlan_private * priv)
{
int ret;
wlan_adapter *adapter = priv->adapter;
struct region_channel *region_chan;
u8 j;
ENTER();
lbs_pr_debug(1, "11D:curbssparams.band[%d]\n", adapter->curbssparams.band);
if (priv->adapter->enable11d) {
/* update parsed_region_chan_11; dnld domaininf to FW */
for (j = 0; j < sizeof(adapter->region_channel) /
sizeof(adapter->region_channel[0]); j++) {
region_chan = &adapter->region_channel[j];
lbs_pr_debug(1, "11D:[%d] region_chan->band[%d]\n", j,
region_chan->band);
if (!region_chan || !region_chan->valid
|| !region_chan->CFP)
continue;
if (region_chan->band != adapter->curbssparams.band)
continue;
break;
}
if (j >= sizeof(adapter->region_channel) /
sizeof(adapter->region_channel[0])) {
lbs_pr_debug(1, "11D:region_chan not found. band[%d]\n",
adapter->curbssparams.band);
LEAVE();
return -1;
}
memset(&adapter->parsed_region_chan, 0,
sizeof(struct parsed_region_chan_11d));
wlan_generate_parsed_region_chan_11d(region_chan,
&adapter->
parsed_region_chan);
memset(&adapter->domainreg, 0,
sizeof(struct wlan_802_11d_domain_reg));
generate_domain_info_11d(&adapter->parsed_region_chan,
&adapter->domainreg);
ret = set_domain_info_11d(priv);
if (ret) {
lbs_pr_debug(1, "11D: Err set domainInfo to FW\n");
LEAVE();
return ret;
}
}
LEAVE();
return 0;
}
