/** * This file contains functions for 802.11D. */ #include #include #include #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_deb_11d("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_deb_hex(LBS_DEB_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_deb_11d("found chan %d\n", chan); return 1; } } lbs_deb_11d("chan %d not found\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_deb_11d("nrchan %d\n", nr_chan); lbs_deb_hex(LBS_DEB_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_deb_11d("nr_subband=%x\n", domaininfo->nr_subband); lbs_deb_hex(LBS_DEB_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_deb_11d("region_chan is NULL\n"); return; } cfp = region_chan->CFP; if (cfp == NULL) { lbs_deb_11d("cfp is 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_deb_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_deb_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_deb_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; int ret = 0; lbs_deb_enter(LBS_DEB_11D); 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) { ret = 0; } else { ret = 1; } goto done; } } /*chan is not in the region table */ done: lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret); return ret; } /** * @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; lbs_deb_enter(LBS_DEB_11D); /*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_deb_hex(LBS_DEB_11D, "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 */ goto done; } /*Step1: check region_code */ parsed_region_chan->region = region = wlan_region_2_code(countryinfo->countrycode); lbs_deb_11d("regioncode=%x\n", (u8) parsed_region_chan->region); lbs_deb_hex(LBS_DEB_11D, "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_deb_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_deb_11d("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_deb_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_deb_11d("nrchan=%x\n", parsed_region_chan->nr_chan); lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (u8 *) parsed_region_chan, 2 + COUNTRY_CODE_LEN + sizeof(struct parsed_region_chan_11d) * idx); done: lbs_deb_enter(LBS_DEB_11D); 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; lbs_deb_enter(LBS_DEB_11D); if (wlan_channel_known_11d(chan, parsed_region_chan)) { lbs_deb_11d("found, do active scan\n"); scan_type = CMD_SCAN_TYPE_ACTIVE; } else { lbs_deb_11d("not found, do passive scan\n"); } lbs_deb_leave_args(LBS_DEB_11D, "ret scan_type %d", scan_type); 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; } /** * @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_deb_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_deb_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_deb_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; lbs_deb_enter(LBS_DEB_11D); lbs_deb_11d("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_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd, (int)(cmd->size)); goto done; } 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_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd, le16_to_cpu(cmd->size)); done: lbs_deb_enter(LBS_DEB_11D); 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; lbs_deb_enter(LBS_DEB_11D); lbs_deb_hex(LBS_DEB_11D, "domain info resp", (u8 *) resp, (int)le16_to_cpu(resp->size)); nr_subband = (le16_to_cpu(domain->header.len) - COUNTRY_CODE_LEN) / sizeof(struct ieeetypes_subbandset); lbs_deb_11d("domain info resp: nr_subband %d\n", nr_subband); if (nr_subband > MRVDRV_MAX_SUBBAND_802_11D) { lbs_deb_11d("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_deb_11d("Invalid action:%d\n", domaininfo->action); ret = -1; break; } lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret); 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, struct bss_descriptor * bss) { int ret; wlan_adapter *adapter = priv->adapter; lbs_deb_enter(LBS_DEB_11D); if (priv->adapter->enable11d) { memset(&adapter->parsed_region_chan, 0, sizeof(struct parsed_region_chan_11d)); ret = parse_domain_info_11d(&bss->countryinfo, 0, &adapter->parsed_region_chan); if (ret == -1) { lbs_deb_11d("error parsing domain_info from AP\n"); goto done; } 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_deb_11d("error setting domain info\n"); goto done; } } ret = 0; done: lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret); return ret; } /** * @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; lbs_deb_enter(LBS_DEB_11D); lbs_deb_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_deb_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_deb_11d("region_chan not found, band %d\n", adapter->curbssparams.band); ret = -1; goto done; } 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_deb_11d("error setting domain info\n"); goto done; } } ret = 0; done: lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret); return ret; }