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-rw-r--r--package/libertas/src/11d.c700
1 files changed, 700 insertions, 0 deletions
diff --git a/package/libertas/src/11d.c b/package/libertas/src/11d.c
new file mode 100644
index 0000000000..5e10ce0d35
--- /dev/null
+++ b/package/libertas/src/11d.c
@@ -0,0 +1,700 @@
+/**
+ * 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 lbs_region_2_code(u8 *region)
+{
+ u8 i;
+
+ for (i = 0; region[i] && i < COUNTRY_CODE_LEN; i++)
+ region[i] = toupper(region[i]);
+
+ for (i = 0; i < ARRAY_SIZE(region_code_mapping); 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 *lbs_code_2_region(u8 code)
+{
+ u8 i;
+
+ for (i = 0; i < ARRAY_SIZE(region_code_mapping); 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 lbs_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 = ARRAY_SIZE(channel_freq_power_UN_BG);
+
+ 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 lbs_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 lbs_chan_2_freq(u8 chan, u8 band)
+{
+ struct chan_freq_power *cf;
+ u16 i;
+ u32 freq = 0;
+
+ cf = channel_freq_power_UN_BG;
+
+ for (i = 0; i < ARRAY_SIZE(channel_freq_power_UN_BG); 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 lbs_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 lbs_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,
+ lbs_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 lbs_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 = lbs_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 =
+ lbs_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 (!lbs_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 (lbs_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 lbs_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 (lbs_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 lbs_init_11d(struct lbs_private *priv)
+{
+ priv->enable11d = 0;
+ memset(&(priv->parsed_region_chan), 0,
+ sizeof(struct parsed_region_chan_11d));
+ return;
+}
+
+/**
+ * @brief This function sets DOMAIN INFO to FW
+ * @param priv pointer to struct lbs_private
+ * @return 0; -1
+*/
+static int set_domain_info_11d(struct lbs_private *priv)
+{
+ int ret;
+
+ if (!priv->enable11d) {
+ lbs_deb_11d("dnld domain Info with 11d disabled\n");
+ return 0;
+ }
+
+ ret = lbs_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 struct lbs_private
+ * @param band band
+ * @return 0
+*/
+int lbs_set_universaltable(struct lbs_private *priv, u8 band)
+{
+ u16 size = sizeof(struct chan_freq_power);
+ u16 i = 0;
+
+ memset(priv->universal_channel, 0,
+ sizeof(priv->universal_channel));
+
+ priv->universal_channel[i].nrcfp =
+ sizeof(channel_freq_power_UN_BG) / size;
+ lbs_deb_11d("BG-band nrcfp %d\n",
+ priv->universal_channel[i].nrcfp);
+
+ priv->universal_channel[i].CFP = channel_freq_power_UN_BG;
+ priv->universal_channel[i].valid = 1;
+ priv->universal_channel[i].region = UNIVERSAL_REGION_CODE;
+ priv->universal_channel[i].band = band;
+ i++;
+
+ return 0;
+}
+
+/**
+ * @brief This function implements command CMD_802_11D_DOMAIN_INFO
+ * @param priv pointer to struct lbs_private
+ * @param cmd pointer to cmd buffer
+ * @param cmdno cmd ID
+ * @param cmdOption cmd action
+ * @return 0
+*/
+int lbs_cmd_802_11d_domain_info(struct lbs_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;
+ u8 nr_subband = priv->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,
+ le16_to_cpu(cmd->size));
+ goto done;
+ }
+
+ domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
+ memcpy(domain->countrycode, priv->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, priv->domainreg.subband,
+ nr_subband * sizeof(struct ieeetypes_subbandset));
+
+ cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
+ le16_to_cpu(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 struct lbs_private
+ * @param resp pointer to command response buffer
+ * @return 0; -1
+ */
+int lbs_ret_802_11d_domain_info(struct lbs_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 struct lbs_private
+ * @return 0; -1
+ */
+int lbs_parse_dnld_countryinfo_11d(struct lbs_private *priv,
+ struct bss_descriptor * bss)
+{
+ int ret;
+
+ lbs_deb_enter(LBS_DEB_11D);
+ if (priv->enable11d) {
+ memset(&priv->parsed_region_chan, 0,
+ sizeof(struct parsed_region_chan_11d));
+ ret = parse_domain_info_11d(&bss->countryinfo, 0,
+ &priv->parsed_region_chan);
+
+ if (ret == -1) {
+ lbs_deb_11d("error parsing domain_info from AP\n");
+ goto done;
+ }
+
+ memset(&priv->domainreg, 0,
+ sizeof(struct lbs_802_11d_domain_reg));
+ generate_domain_info_11d(&priv->parsed_region_chan,
+ &priv->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 struct lbs_private
+ * @return 0; -1
+ */
+int lbs_create_dnld_countryinfo_11d(struct lbs_private *priv)
+{
+ int ret;
+ struct region_channel *region_chan;
+ u8 j;
+
+ lbs_deb_enter(LBS_DEB_11D);
+ lbs_deb_11d("curbssparams.band %d\n", priv->curbssparams.band);
+
+ if (priv->enable11d) {
+ /* update parsed_region_chan_11; dnld domaininf to FW */
+
+ for (j = 0; j < ARRAY_SIZE(priv->region_channel); j++) {
+ region_chan = &priv->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 != priv->curbssparams.band)
+ continue;
+ break;
+ }
+
+ if (j >= ARRAY_SIZE(priv->region_channel)) {
+ lbs_deb_11d("region_chan not found, band %d\n",
+ priv->curbssparams.band);
+ ret = -1;
+ goto done;
+ }
+
+ memset(&priv->parsed_region_chan, 0,
+ sizeof(struct parsed_region_chan_11d));
+ lbs_generate_parsed_region_chan_11d(region_chan,
+ &priv->
+ parsed_region_chan);
+
+ memset(&priv->domainreg, 0,
+ sizeof(struct lbs_802_11d_domain_reg));
+ generate_domain_info_11d(&priv->parsed_region_chan,
+ &priv->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;
+}
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