diff options
author | Piotr Krysik <ptrkrysik@gmail.com> | 2018-02-27 12:16:25 +0100 |
---|---|---|
committer | Piotr Krysik <ptrkrysik@gmail.com> | 2018-02-27 14:45:14 +0100 |
commit | 9e2e8358a3cd5ec0a34906e672b227a90e558306 (patch) | |
tree | 6b63f546ff6911d31eb7f6df45cbbfb81205273d /lib/decoding/osmocom/gsm/gsm48_ie.c | |
parent | 79e712c685d95479c2aec37ee75b747b3ad56e36 (diff) |
Portability fix: Adding local partial copy of libosmocore (TODO: minimize it)
Diffstat (limited to 'lib/decoding/osmocom/gsm/gsm48_ie.c')
-rw-r--r-- | lib/decoding/osmocom/gsm/gsm48_ie.c | 1247 |
1 files changed, 1247 insertions, 0 deletions
diff --git a/lib/decoding/osmocom/gsm/gsm48_ie.c b/lib/decoding/osmocom/gsm/gsm48_ie.c new file mode 100644 index 0000000..3881b18 --- /dev/null +++ b/lib/decoding/osmocom/gsm/gsm48_ie.c @@ -0,0 +1,1247 @@ +/*! \file gsm48_ie.c + * GSM Mobile Radio Interface Layer 3 messages. + * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0. */ +/* + * (C) 2008 by Harald Welte <laforge@gnumonks.org> + * (C) 2009-2010 by Andreas Eversberg + * + * All Rights Reserved + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + + +#include <stdint.h> +#include <string.h> +#include <errno.h> + +#include <osmocom/core/utils.h> +/*#include <osmocom/core/msgb.h>*/ +/* #include <osmocom/gsm/tlv.h> */ +/* #include <osmocom/gsm/mncc.h> */ +#include <osmocom/gsm/protocol/gsm_04_08.h> +#include <osmocom/gsm/gsm48_ie.h> + +/*! \addtogroup gsm0408 + * @{ + */ + +//static const char bcd_num_digits[] = { +// '0', '1', '2', '3', '4', '5', '6', '7', +// '8', '9', '*', '#', 'a', 'b', 'c', '\0' +//}; + +///*! decode a 'called/calling/connect party BCD number' as in 10.5.4.7 +// * \param[out] Caller-provided output buffer +// * \param[in] bcd_lv Length-Value portion of to-be-decoded IE +// * \param[in] h_len Length of an optional heder between L and V portion +// * \returns - in case of success; negative on error */ +//int gsm48_decode_bcd_number(char *output, int output_len, +// const uint8_t *bcd_lv, int h_len) +//{ +// uint8_t in_len = bcd_lv[0]; +// int i; + +// for (i = 1 + h_len; i <= in_len; i++) { +// /* lower nibble */ +// output_len--; +// if (output_len <= 1) +// break; +// *output++ = bcd_num_digits[bcd_lv[i] & 0xf]; + +// /* higher nibble */ +// output_len--; +// if (output_len <= 1) +// break; +// *output++ = bcd_num_digits[bcd_lv[i] >> 4]; +// } +// if (output_len >= 1) +// *output++ = '\0'; + +// return 0; +//} + +///*! convert a single ASCII character to call-control BCD */ +//static int asc_to_bcd(const char asc) +//{ +// int i; + +// for (i = 0; i < ARRAY_SIZE(bcd_num_digits); i++) { +// if (bcd_num_digits[i] == asc) +// return i; +// } +// return -EINVAL; +//} + +///*! convert a ASCII phone number to 'called/calling/connect party BCD number' +// * \param[out] bcd_lv Caller-provided output buffer +// * \param[in] max_len Maximum Length of \a bcd_lv +// * \param[in] h_len Length of an optional heder between L and V portion +// * \param[in] input phone number as 0-terminated ASCII +// * \returns number of bytes used in \a bcd_lv */ +//int gsm48_encode_bcd_number(uint8_t *bcd_lv, uint8_t max_len, +// int h_len, const char *input) +//{ +// int in_len = strlen(input); +// int i; +// uint8_t *bcd_cur = bcd_lv + 1 + h_len; + +// /* two digits per byte, plus type byte */ +// bcd_lv[0] = in_len/2 + h_len; +// if (in_len % 2) +// bcd_lv[0]++; + +// if (bcd_lv[0] > max_len) +// return -EIO; + +// for (i = 0; i < in_len; i++) { +// int rc = asc_to_bcd(input[i]); +// if (rc < 0) +// return rc; +// if (i % 2 == 0) +// *bcd_cur = rc; +// else +// *bcd_cur++ |= (rc << 4); +// } +// /* append padding nibble in case of odd length */ +// if (i % 2) +// *bcd_cur++ |= 0xf0; + +// /* return how many bytes we used */ +// return (bcd_cur - bcd_lv); +//} + +///*! Decode TS 04.08 Bearer Capability IE (10.5.4.5) +// * \param[out] Caller-provided memory for decoded output +// * \[aram[in] LV portion of TS 04.08 Bearer Capability +// * \returns 0 on success; negative on error */ +//int gsm48_decode_bearer_cap(struct gsm_mncc_bearer_cap *bcap, +// const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; +// int i, s; + +// if (in_len < 1) +// return -EINVAL; + +// bcap->speech_ver[0] = -1; /* end of list, of maximum 7 values */ + +// /* octet 3 */ +// bcap->transfer = lv[1] & 0x07; +// bcap->mode = (lv[1] & 0x08) >> 3; +// bcap->coding = (lv[1] & 0x10) >> 4; +// bcap->radio = (lv[1] & 0x60) >> 5; + +// switch (bcap->transfer) { +// case GSM_MNCC_BCAP_SPEECH: +// i = 1; +// s = 0; +// while(!(lv[i] & 0x80)) { +// i++; /* octet 3a etc */ +// if (in_len < i) +// return 0; +// bcap->speech_ver[s++] = lv[i] & 0x0f; +// bcap->speech_ver[s] = -1; /* end of list */ +// if (i == 2) /* octet 3a */ +// bcap->speech_ctm = (lv[i] & 0x20) >> 5; +// if (s == 7) /* maximum speech versions + end of list */ +// return 0; +// } +// break; +// case GSM_MNCC_BCAP_UNR_DIG: +// case GSM_MNCC_BCAP_FAX_G3: +// i = 1; +// while(!(lv[i] & 0x80)) { +// i++; /* octet 3a etc */ +// if (in_len < i) +// return 0; +// /* ignore them */ +// } +// /* octet 4: skip */ +// i++; +// /* octet 5 */ +// i++; +// if (in_len < i) +// return 0; +// bcap->data.rate_adaption = (lv[i] >> 3) & 3; +// bcap->data.sig_access = lv[i] & 7; +// while(!(lv[i] & 0x80)) { +// i++; /* octet 5a etc */ +// if (in_len < i) +// return 0; +// /* ignore them */ +// } +// /* octet 6 */ +// i++; +// if (in_len < i) +// return 0; +// bcap->data.async = lv[i] & 1; +// if (!(lv[i] & 0x80)) { +// i++; +// if (in_len < i) +// return 0; +// /* octet 6a */ +// bcap->data.nr_stop_bits = ((lv[i] >> 7) & 1) + 1; +// if (lv[i] & 0x10) +// bcap->data.nr_data_bits = 8; +// else +// bcap->data.nr_data_bits = 7; +// bcap->data.user_rate = lv[i] & 0xf; + +// if (!(lv[i] & 0x80)) { +// i++; +// if (in_len < i) +// return 0; +// /* octet 6b */ +// bcap->data.parity = lv[i] & 7; +// bcap->data.interm_rate = (lv[i] >> 5) & 3; + +// /* octet 6c */ +// if (!(lv[i] & 0x80)) { +// i++; +// if (in_len < i) +// return 0; +// bcap->data.transp = (lv[i] >> 5) & 3; +// bcap->data.modem_type = lv[i] & 0x1F; +// } +// } + +// } +// break; +// default: +// i = 1; +// while (!(lv[i] & 0x80)) { +// i++; /* octet 3a etc */ +// if (in_len < i) +// return 0; +// /* ignore them */ +// } +// /* FIXME: implement OCTET 4+ parsing */ +// break; +// } + +// return 0; +//} + +///*! Encode TS 04.08 Bearer Capability IE (10.5.4.5) +// * \param[out] msg Message Buffer to which IE is to be appended +// * \param[in] lv_only Write only LV portion (1) or TLV (0) +// * \param[in] bcap Decoded Bearer Capability to be encoded +// * \returns 0 on success; negative on error */ +//int gsm48_encode_bearer_cap(struct msgb *msg, int lv_only, +// const struct gsm_mncc_bearer_cap *bcap) +//{ +// uint8_t lv[32 + 1]; +// int i = 1, s; + +// lv[1] = bcap->transfer; +// lv[1] |= bcap->mode << 3; +// lv[1] |= bcap->coding << 4; +// lv[1] |= bcap->radio << 5; + +// switch (bcap->transfer) { +// case GSM_MNCC_BCAP_SPEECH: +// for (s = 0; bcap->speech_ver[s] >= 0; s++) { +// i++; /* octet 3a etc */ +// lv[i] = bcap->speech_ver[s]; +// if (i == 2) /* octet 3a */ +// lv[i] |= bcap->speech_ctm << 5; +// } +// lv[i] |= 0x80; /* last IE of octet 3 etc */ +// break; +// case GSM48_BCAP_ITCAP_UNR_DIG_INF: +// case GSM48_BCAP_ITCAP_FAX_G3: +// lv[i++] |= 0x80; /* last IE of octet 3 etc */ +// /* octet 4 */ +// lv[i++] = 0xb8; +// /* octet 5 */ +// lv[i++] = 0x80 | ((bcap->data.rate_adaption & 3) << 3) +// | (bcap->data.sig_access & 7); +// /* octet 6 */ +// lv[i++] = 0x20 | (bcap->data.async & 1); +// /* octet 6a */ +// lv[i++] = (bcap->data.user_rate & 0xf) | +// (bcap->data.nr_data_bits == 8 ? 0x10 : 0x00) | +// (bcap->data.nr_stop_bits == 2 ? 0x40 : 0x00); +// /* octet 6b */ +// lv[i++] = (bcap->data.parity & 7) | +// ((bcap->data.interm_rate & 3) << 5); +// /* octet 6c */ +// lv[i] = 0x80 | (bcap->data.modem_type & 0x1f); +// break; +// default: +// return -EINVAL; +// } + +// lv[0] = i; +// if (lv_only) +// msgb_lv_put(msg, lv[0], lv+1); +// else +// msgb_tlv_put(msg, GSM48_IE_BEARER_CAP, lv[0], lv+1); + +// return 0; +//} + +///*! Decode TS 04.08 Call Control Capabilities IE (10.5.4.5a) +// * \param[out] Caller-provided memory for decoded CC capabilities +// * \param[in] lv Length-Value of IE +// * \retursns 0 on success; negative on error */ +//int gsm48_decode_cccap(struct gsm_mncc_cccap *ccap, const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; + +// if (in_len < 1) +// return -EINVAL; + +// /* octet 3 */ +// ccap->dtmf = lv[1] & 0x01; +// ccap->pcp = (lv[1] & 0x02) >> 1; + +// return 0; +//} + +///*! Encodoe TS 04.08 Call Control Capabilities (10.5.4.5a) +// * \param[out] msg Message Buffer to which to append IE (as TLV) +// * \param[in] ccap Decoded CC Capabilities to be encoded +// * \returns 0 on success; negative on error */ +//int gsm48_encode_cccap(struct msgb *msg, +// const struct gsm_mncc_cccap *ccap) +//{ +// uint8_t lv[2]; + +// lv[0] = 1; +// lv[1] = 0; +// if (ccap->dtmf) +// lv [1] |= 0x01; +// if (ccap->pcp) +// lv [1] |= 0x02; + +// msgb_tlv_put(msg, GSM48_IE_CC_CAP, lv[0], lv+1); + +// return 0; +//} + +///*! Decode TS 04.08 Called Party BCD Number IE (10.5.4.7) +// * \param[out] called Caller-provided memory for decoded number +// * \param[in] lv Length-Value portion of IE +// * \returns 0 on success; negative on error */ +//int gsm48_decode_called(struct gsm_mncc_number *called, +// const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; + +// if (in_len < 1) +// return -EINVAL; + +// /* octet 3 */ +// called->plan = lv[1] & 0x0f; +// called->type = (lv[1] & 0x70) >> 4; + +// /* octet 4..N */ +// gsm48_decode_bcd_number(called->number, sizeof(called->number), lv, 1); + +// return 0; +//} + +///*! Encode TS 04.08 Called Party IE (10.5.4.7) +// * \param[out] msg Mesage Buffer to which to append IE (as TLV) +// * \param[in] called MNCC Number to encode/append +// * \returns 0 on success; negative on error */ +//int gsm48_encode_called(struct msgb *msg, +// const struct gsm_mncc_number *called) +//{ +// uint8_t lv[18]; +// int ret; + +// /* octet 3 */ +// lv[1] = 0x80; /* no extension */ +// lv[1] |= called->plan; +// lv[1] |= called->type << 4; + +// /* octet 4..N, octet 2 */ +// ret = gsm48_encode_bcd_number(lv, sizeof(lv), 1, called->number); +// if (ret < 0) +// return ret; + +// msgb_tlv_put(msg, GSM48_IE_CALLED_BCD, lv[0], lv+1); + +// return 0; +//} + +///*! Decode TS 04.08 Caller ID +// * \param[out] called Caller-provided memory for decoded number +// * \param[in] lv Length-Value portion of IE +// * \returns 0 on success; negative on error */ +//int gsm48_decode_callerid(struct gsm_mncc_number *callerid, +// const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; +// int i = 1; + +// if (in_len < 1) +// return -EINVAL; + +// /* octet 3 */ +// callerid->plan = lv[1] & 0x0f; +// callerid->type = (lv[1] & 0x70) >> 4; + +// /* octet 3a */ +// if (!(lv[1] & 0x80)) { +// callerid->screen = lv[2] & 0x03; +// callerid->present = (lv[2] & 0x60) >> 5; +// i = 2; +// } + +// /* octet 4..N */ +// gsm48_decode_bcd_number(callerid->number, sizeof(callerid->number), lv, i); + +// return 0; +//} + +///*! Encode TS 04.08 Caller ID IE +// * \param[out] msg Mesage Buffer to which to append IE (as TLV) +// * \param[in] ie IE Identifier (tag) +// * \param[in] max_len maximum generated output in bytes +// * \param[in] callerid MNCC Number to encode/append +// * \returns 0 on success; negative on error */ +//int gsm48_encode_callerid(struct msgb *msg, int ie, int max_len, +// const struct gsm_mncc_number *callerid) +//{ +// uint8_t * lv = malloc(sizeof(uint8_t)*(max_len - 1)); +// int h_len = 1; +// int ret; + +// /* octet 3 */ +// lv[1] = callerid->plan; +// lv[1] |= callerid->type << 4; + +// if (callerid->present || callerid->screen) { +// /* octet 3a */ +// lv[2] = callerid->screen; +// lv[2] |= callerid->present << 5; +// lv[2] |= 0x80; +// h_len++; +// } else +// lv[1] |= 0x80; + +// /* octet 4..N, octet 2 */ +// ret = gsm48_encode_bcd_number(lv, sizeof(lv), h_len, callerid->number); +// if (ret < 0) +// return ret; + +// msgb_tlv_put(msg, ie, lv[0], lv+1); +// free(lv); +// return 0; +//} + +///*! Decode TS 04.08 Cause IE (10.5.4.11) +// * \param[out] cause Caller-provided memory for output +// * \param[in] lv LV portion of Cause IE +// * \returns 0 on success; negative on error */ +//int gsm48_decode_cause(struct gsm_mncc_cause *cause, +// const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; +// int i; + +// if (in_len < 2) +// return -EINVAL; + +// cause->diag_len = 0; + +// /* octet 3 */ +// cause->location = lv[1] & 0x0f; +// cause->coding = (lv[1] & 0x60) >> 5; + +// i = 1; +// if (!(lv[i] & 0x80)) { +// i++; /* octet 3a */ +// if (in_len < i+1) +// return 0; +// cause->rec = 1; +// cause->rec_val = lv[i] & 0x7f; +// } +// i++; + +// /* octet 4 */ +// cause->value = lv[i] & 0x7f; +// i++; + +// if (in_len < i) /* no diag */ +// return 0; + +// if (in_len - (i-1) > 32) /* maximum 32 octets */ +// return 0; + +// /* octet 5-N */ +// memcpy(cause->diag, lv + i, in_len - (i-1)); +// cause->diag_len = in_len - (i-1); + +// return 0; +//} + +///*! Encode TS 04.08 Cause IE (10.5.4.11) +// * \param[out] msg Message Buffer to which to append IE +// * \param[in] lv_only Encode as LV (1) or TLV (0) +// * \param[in] cause Cause value to be encoded +// * \returns 0 on success; negative on error */ +//int gsm48_encode_cause(struct msgb *msg, int lv_only, +// const struct gsm_mncc_cause *cause) +//{ +// uint8_t lv[32+4]; +// int i; + +// if (cause->diag_len > 32) +// return -EINVAL; + +// /* octet 3 */ +// lv[1] = cause->location; +// lv[1] |= cause->coding << 5; + +// i = 1; +// if (cause->rec) { +// i++; /* octet 3a */ +// lv[i] = cause->rec_val; +// } +// lv[i] |= 0x80; /* end of octet 3 */ + +// /* octet 4 */ +// i++; +// lv[i] = 0x80 | cause->value; + +// /* octet 5-N */ +// if (cause->diag_len) { +// memcpy(lv + i, cause->diag, cause->diag_len); +// i += cause->diag_len; +// } + +// lv[0] = i; +// if (lv_only) +// msgb_lv_put(msg, lv[0], lv+1); +// else +// msgb_tlv_put(msg, GSM48_IE_CAUSE, lv[0], lv+1); + +// return 0; +//} + +///*! Decode TS 04.08 Calling Number IE (10.5.4.9) */ +//int gsm48_decode_calling(struct gsm_mncc_number *calling, +// const uint8_t *lv) +//{ +// return gsm48_decode_callerid(calling, lv); +//} + +///*! Encode TS 04.08 Calling Number IE (10.5.4.9) */ +//int gsm48_encode_calling(struct msgb *msg, +// const struct gsm_mncc_number *calling) +//{ +// return gsm48_encode_callerid(msg, GSM48_IE_CALLING_BCD, 14, calling); +//} + +///*! Decode TS 04.08 Connected Number IE (10.5.4.13) */ +//int gsm48_decode_connected(struct gsm_mncc_number *connected, +// const uint8_t *lv) +//{ +// return gsm48_decode_callerid(connected, lv); +//} + +///*! Encode TS 04.08 Connected Number IE (10.5.4.13) */ +//int gsm48_encode_connected(struct msgb *msg, +// const struct gsm_mncc_number *connected) +//{ +// return gsm48_encode_callerid(msg, GSM48_IE_CONN_BCD, 14, connected); +//} + +///*! Decode TS 04.08 Redirecting Number IE (10.5.4.21b) */ +//int gsm48_decode_redirecting(struct gsm_mncc_number *redirecting, +// const uint8_t *lv) +//{ +// return gsm48_decode_callerid(redirecting, lv); +//} + +///*! Encode TS 04.08 Redirecting Number IE (10.5.4.21b) */ +//int gsm48_encode_redirecting(struct msgb *msg, +// const struct gsm_mncc_number *redirecting) +//{ +// return gsm48_encode_callerid(msg, GSM48_IE_REDIR_BCD, 19, redirecting); +//} + +///*! Decode TS 04.08 Facility IE (10.5.4.15) */ +//int gsm48_decode_facility(struct gsm_mncc_facility *facility, +// const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; + +// if (in_len < 1) +// return -EINVAL; + +// if (in_len > sizeof(facility->info)) +// return -EINVAL; + +// memcpy(facility->info, lv+1, in_len); +// facility->len = in_len; + +// return 0; +//} + +///*! Encode TS 04.08 Facility IE (10.5.4.15) */ +//int gsm48_encode_facility(struct msgb *msg, int lv_only, +// const struct gsm_mncc_facility *facility) +//{ +// uint8_t lv[GSM_MAX_FACILITY + 1]; + +// if (facility->len < 1 || facility->len > GSM_MAX_FACILITY) +// return -EINVAL; + +// memcpy(lv+1, facility->info, facility->len); +// lv[0] = facility->len; +// if (lv_only) +// msgb_lv_put(msg, lv[0], lv+1); +// else +// msgb_tlv_put(msg, GSM48_IE_FACILITY, lv[0], lv+1); + +// return 0; +//} + +///*! Decode TS 04.08 Notify IE (10.5.4.20) */ +//int gsm48_decode_notify(int *notify, const uint8_t *v) +//{ +// *notify = v[0] & 0x7f; + +// return 0; +//} + +///*! Encode TS 04.08 Notify IE (10.5.4.20) */ +//int gsm48_encode_notify(struct msgb *msg, int notify) +//{ +// msgb_v_put(msg, notify | 0x80); + +// return 0; +//} + +///*! Decode TS 04.08 Signal IE (10.5.4.23) */ +//int gsm48_decode_signal(int *signal, const uint8_t *v) +//{ +// *signal = v[0]; + +// return 0; +//} + +///*! Encode TS 04.08 Signal IE (10.5.4.23) */ +//int gsm48_encode_signal(struct msgb *msg, int signal) +//{ +// msgb_tv_put(msg, GSM48_IE_SIGNAL, signal); + +// return 0; +//} + +///*! Decode TS 04.08 Keypad IE (10.5.4.17) */ +//int gsm48_decode_keypad(int *keypad, const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; + +// if (in_len < 1) +// return -EINVAL; + +// *keypad = lv[1] & 0x7f; + +// return 0; +//} + +///*! Encode TS 04.08 Keypad IE (10.5.4.17) */ +//int gsm48_encode_keypad(struct msgb *msg, int keypad) +//{ +// msgb_tv_put(msg, GSM48_IE_KPD_FACILITY, keypad); + +// return 0; +//} + +///*! Decode TS 04.08 Progress IE (10.5.4.21) */ +//int gsm48_decode_progress(struct gsm_mncc_progress *progress, +// const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; + +// if (in_len < 2) +// return -EINVAL; + +// progress->coding = (lv[1] & 0x60) >> 5; +// progress->location = lv[1] & 0x0f; +// progress->descr = lv[2] & 0x7f; + +// return 0; +//} + +///*! Encode TS 04.08 Progress IE (10.5.4.21) */ +//int gsm48_encode_progress(struct msgb *msg, int lv_only, +// const struct gsm_mncc_progress *p) +//{ +// uint8_t lv[3]; + +// lv[0] = 2; +// lv[1] = 0x80 | ((p->coding & 0x3) << 5) | (p->location & 0xf); +// lv[2] = 0x80 | (p->descr & 0x7f); +// if (lv_only) +// msgb_lv_put(msg, lv[0], lv+1); +// else +// msgb_tlv_put(msg, GSM48_IE_PROGR_IND, lv[0], lv+1); + +// return 0; +//} + +///*! Decode TS 04.08 User-User IE (10.5.4.25) */ +//int gsm48_decode_useruser(struct gsm_mncc_useruser *uu, +// const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; +// char *info = uu->info; +// int info_len = sizeof(uu->info); +// int i; + +// if (in_len < 1) +// return -EINVAL; + +// uu->proto = lv[1]; + +// for (i = 2; i <= in_len; i++) { +// info_len--; +// if (info_len <= 1) +// break; +// *info++ = lv[i]; +// } +// if (info_len >= 1) +// *info++ = '\0'; + +// return 0; +//} + +///*! Encode TS 04.08 User-User IE (10.5.4.25) */ +//int gsm48_encode_useruser(struct msgb *msg, int lv_only, +// const struct gsm_mncc_useruser *uu) +//{ +// uint8_t lv[GSM_MAX_USERUSER + 2]; + +// if (strlen(uu->info) > GSM_MAX_USERUSER) +// return -EINVAL; + +// lv[0] = 1 + strlen(uu->info); +// lv[1] = uu->proto; +// memcpy(lv + 2, uu->info, strlen(uu->info)); +// if (lv_only) +// msgb_lv_put(msg, lv[0], lv+1); +// else +// msgb_tlv_put(msg, GSM48_IE_USER_USER, lv[0], lv+1); + +// return 0; +//} + +///*! Decode TS 04.08 SS Version IE (10.5.4.24) */ +//int gsm48_decode_ssversion(struct gsm_mncc_ssversion *ssv, +// const uint8_t *lv) +//{ +// uint8_t in_len = lv[0]; + +// if (in_len < 1 || in_len < sizeof(ssv->info)) +// return -EINVAL; + +// memcpy(ssv->info, lv + 1, in_len); +// ssv->len = in_len; + +// return 0; +//} + +///*! Encode TS 04.08 SS Version IE (10.5.4.24) */ +//int gsm48_encode_ssversion(struct msgb *msg, +// const struct gsm_mncc_ssversion *ssv) +//{ +// uint8_t lv[GSM_MAX_SSVERSION + 1]; + +// if (ssv->len > GSM_MAX_SSVERSION) +// return -EINVAL; + +// lv[0] = ssv->len; +// memcpy(lv + 1, ssv->info, ssv->len); +// msgb_tlv_put(msg, GSM48_IE_SS_VERS, lv[0], lv+1); + +// return 0; +//} + +///* decode 'more data' does not require a function, because it has no value */ + +///*! Encode TS 04.08 More Data IE (10.5.4.19) */ +//int gsm48_encode_more(struct msgb *msg) +//{ +// uint8_t *ie; + +// ie = msgb_put(msg, 1); +// ie[0] = GSM48_IE_MORE_DATA; + +// return 0; +//} + +static int32_t smod(int32_t n, int32_t m) +{ + int32_t res; + + res = n % m; + + if (res <= 0) + res += m; + + return res; +} + +/*! Decode TS 04.08 Cell Channel Description IE (10.5.2.1b) and other frequency lists + * \param[out] f Caller-provided output memory + * \param[in] cd Cell Channel Description IE + * \param[in] len Length of \a cd in bytes + * \returns 0 on success; negative on error */ +int gsm48_decode_freq_list(struct gsm_sysinfo_freq *f, uint8_t *cd, + uint8_t len, uint8_t mask, uint8_t frqt) +{ + int i; + + /* NOTES: + * + * The Range format uses "SMOD" computation. + * e.g. "n SMOD m" equals "((n - 1) % m) + 1" + * A cascade of multiple SMOD computations is simpified: + * "(n SMOD m) SMOD o" equals "(((n - 1) % m) % o) + 1" + * + * The Range format uses 16 octets of data in SYSTEM INFORMATION. + * When used in dedicated messages, the length can be less. + * In this case the ranges are decoded for all frequencies that + * fit in the block of given length. + */ + + /* tabula rasa */ + for (i = 0; i < 1024; i++) + f[i].mask &= ~frqt; + + /* 00..XXX. */ + if ((cd[0] & 0xc0 & mask) == 0x00) { + /* Bit map 0 format */ + if (len < 16) + return -EINVAL; + for (i = 1; i <= 124; i++) + if ((cd[15 - ((i-1) >> 3)] & (1 << ((i-1) & 7)))) + f[i].mask |= frqt; + + return 0; + } + + /* 10..0XX. */ + if ((cd[0] & 0xc8 & mask) == 0x80) { + /* Range 1024 format */ + uint16_t w[17]; /* 1..16 */ + struct gsm48_range_1024 *r = (struct gsm48_range_1024 *)cd; + + if (len < 2) + return -EINVAL; + memset(w, 0, sizeof(w)); + if (r->f0) + f[0].mask |= frqt; + w[1] = (r->w1_hi << 8) | r->w1_lo; + if (len >= 4) + w[2] = (r->w2_hi << 1) | r->w2_lo; + if (len >= 5) + w[3] = (r->w3_hi << 2) | r->w3_lo; + if (len >= 6) + w[4] = (r->w4_hi << 2) | r->w4_lo; + if (len >= 7) + w[5] = (r->w5_hi << 2) | r->w5_lo; + if (len >= 8) + w[6] = (r->w6_hi << 2) | r->w6_lo; + if (len >= 9) + w[7] = (r->w7_hi << 2) | r->w7_lo; + if (len >= 10) + w[8] = (r->w8_hi << 1) | r->w8_lo; + if (len >= 10) + w[9] = r->w9; + if (len >= 11) + w[10] = r->w10; + if (len >= 12) + w[11] = (r->w11_hi << 6) | r->w11_lo; + if (len >= 13) + w[12] = (r->w12_hi << 5) | r->w12_lo; + if (len >= 14) + w[13] = (r->w13_hi << 4) | r->w13_lo; + if (len >= 15) + w[14] = (r->w14_hi << 3) | r->w14_lo; + if (len >= 16) + w[15] = (r->w15_hi << 2) | r->w15_lo; + if (len >= 16) + w[16] = r->w16; + if (w[1]) + f[w[1]].mask |= frqt; + if (w[2]) + f[smod(w[1] - 512 + w[2], 1023)].mask |= frqt; + if (w[3]) + f[smod(w[1] + w[3], 1023)].mask |= frqt; + if (w[4]) + f[smod(w[1] - 512 + smod(w[2] - 256 + w[4], 511), 1023)].mask |= frqt; + if (w[5]) + f[smod(w[1] + smod(w[3] - 256 + w[5], 511), 1023)].mask |= frqt; + if (w[6]) + f[smod(w[1] - 512 + smod(w[2] + w[6], 511), 1023)].mask |= frqt; + if (w[7]) + f[smod(w[1] + smod(w[3] + w[7], 511), 1023)].mask |= frqt; + if (w[8]) + f[smod(w[1] - 512 + smod(w[2] - 256 + smod(w[4] - 128 + w[8] , 255), 511), 1023)].mask |= frqt; + if (w[9]) + f[smod(w[1] + smod(w[3] - 256 + smod(w[5] - 128 + w[9] , 255), 511), 1023)].mask |= frqt; + if (w[10]) + f[smod(w[1] - 512 + smod(w[2] + smod(w[6] - 128 + w[10], 255), 511), 1023)].mask |= frqt; + if (w[11]) + f[smod(w[1] + smod(w[3] + smod(w[7] - 128 + w[11], 255), 511), 1023)].mask |= frqt; + if (w[12]) + f[smod(w[1] - 512 + smod(w[2] - 256 + smod(w[4] + w[12], 255), 511), 1023)].mask |= frqt; + if (w[13]) + f[smod(w[1] + smod(w[3] - 256 + smod(w[5] + w[13], 255), 511), 1023)].mask |= frqt; + if (w[14]) + f[smod(w[1] - 512 + smod(w[2] + smod(w[6] + w[14], 255), 511), 1023)].mask |= frqt; + if (w[15]) + f[smod(w[1] + smod(w[3] + smod(w[7] + w[15], 255), 511), 1023)].mask |= frqt; + if (w[16]) + f[smod(w[1] - 512 + smod(w[2] - 256 + smod(w[4] - 128 + smod(w[8] - 64 + w[16], 127), 255), 511), 1023)].mask |= frqt; + + return 0; + } + /* 10..100. */ + if ((cd[0] & 0xce & mask) == 0x88) { + /* Range 512 format */ + uint16_t w[18]; /* 1..17 */ + struct gsm48_range_512 *r = (struct gsm48_range_512 *)cd; + + if (len < 4) + return -EINVAL; + memset(w, 0, sizeof(w)); + w[0] = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo; + w[1] = (r->w1_hi << 2) | r->w1_lo; + if (len >= 5) + w[2] = (r->w2_hi << 2) | r->w2_lo; + if (len >= 6) + w[3] = (r->w3_hi << 2) | r->w3_lo; + if (len >= 7) + w[4] = (r->w4_hi << 1) | r->w4_lo; + if (len >= 7) + w[5] = r->w5; + if (len >= 8) + w[6] = r->w6; + if (len >= 9) + w[7] = (r->w7_hi << 6) | r->w7_lo; + if (len >= 10) + w[8] = (r->w8_hi << 4) | r->w8_lo; + if (len >= 11) + w[9] = (r->w9_hi << 2) | r->w9_lo; + if (len >= 11) + w[10] = r->w10; + if (len >= 12) + w[11] = r->w11; + if (len >= 13) + w[12] = (r->w12_hi << 4) | r->w12_lo; + if (len >= 14) + w[13] = (r->w13_hi << 2) | r->w13_lo; + if (len >= 14) + w[14] = r->w14; + if (len >= 15) + w[15] = r->w15; + if (len >= 16) + w[16] = (r->w16_hi << 3) | r->w16_lo; + if (len >= 16) + w[17] = r->w17; + f[w[0]].mask |= frqt; + if (w[1]) + f[(w[0] + w[1]) % 1024].mask |= frqt; + if (w[2]) + f[(w[0] + smod(w[1] - 256 + w[2], 511)) % 1024].mask |= frqt; + if (w[3]) + f[(w[0] + smod(w[1] + w[3], 511)) % 1024].mask |= frqt; + if (w[4]) + f[(w[0] + smod(w[1] - 256 + smod(w[2] - 128 + w[4], 255), 511)) % 1024].mask |= frqt; + if (w[5]) + f[(w[0] + smod(w[1] + smod(w[3] - 128 + w[5], 255), 511)) % 1024].mask |= frqt; + if (w[6]) + f[(w[0] + smod(w[1] - 256 + smod(w[2] + w[6], 255), 511)) % 1024].mask |= frqt; + if (w[7]) + f[(w[0] + smod(w[1] + smod(w[3] + w[7], 255), 511)) % 1024].mask |= frqt; + if (w[8]) + f[(w[0] + smod(w[1] - 256 + smod(w[2] - 128 + smod(w[4] - 64 + w[8] , 127), 255), 511)) % 1024].mask |= frqt; + if (w[9]) + f[(w[0] + smod(w[1] + smod(w[3] - 128 + smod(w[5] - 64 + w[9] , 127), 255), 511)) % 1024].mask |= frqt; + if (w[10]) + f[(w[0] + smod(w[1] - 256 + smod(w[2] + smod(w[6] - 64 + w[10], 127), 255), 511)) % 1024].mask |= frqt; + if (w[11]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] - 64 + w[11], 127), 255), 511)) % 1024].mask |= frqt; + if (w[12]) + f[(w[0] + smod(w[1] - 256 + smod(w[2] - 128 + smod(w[4] + w[12], 127), 255), 511)) % 1024].mask |= frqt; + if (w[13]) + f[(w[0] + smod(w[1] + smod(w[3] - 128 + smod(w[5] + w[13], 127), 255), 511)) % 1024].mask |= frqt; + if (w[14]) + f[(w[0] + smod(w[1] - 256 + smod(w[2] + smod(w[6] + w[14], 127), 255), 511)) % 1024].mask |= frqt; + if (w[15]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] + w[15], 127), 255), 511)) % 1024].mask |= frqt; + if (w[16]) + f[(w[0] + smod(w[1] - 256 + smod(w[2] - 128 + smod(w[4] - 64 + smod(w[8] - 32 + w[16], 63), 127), 255), 511)) % 1024].mask |= frqt; + if (w[17]) + f[(w[0] + smod(w[1] + smod(w[3] - 128 + smod(w[5] - 64 + smod(w[9] - 32 + w[17], 63), 127), 255), 511)) % 1024].mask |= frqt; + + return 0; + } + /* 10..101. */ + if ((cd[0] & 0xce & mask) == 0x8a) { + /* Range 256 format */ + uint16_t w[22]; /* 1..21 */ + struct gsm48_range_256 *r = (struct gsm48_range_256 *)cd; + + if (len < 4) + return -EINVAL; + memset(w, 0, sizeof(w)); + w[0] = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo; + w[1] = (r->w1_hi << 1) | r->w1_lo; + if (len >= 4) + w[2] = r->w2; + if (len >= 5) + w[3] = r->w3; + if (len >= 6) + w[4] = (r->w4_hi << 5) | r->w4_lo; + if (len >= 7) + w[5] = (r->w5_hi << 3) | r->w5_lo; + if (len >= 8) + w[6] = (r->w6_hi << 1) | r->w6_lo; + if (len >= 8) + w[7] = r->w7; + if (len >= 9) + w[8] = (r->w8_hi << 4) | r->w8_lo; + if (len >= 10) + w[9] = (r->w9_hi << 1) | r->w9_lo; + if (len >= 10) + w[10] = r->w10; + if (len >= 11) + w[11] = (r->w11_hi << 3) | r->w11_lo; + if (len >= 11) + w[12] = r->w12; + if (len >= 12) + w[13] = r->w13; + if (len >= 13) + w[14] = (r->w14_hi << 2) | r->w14_lo; + if (len >= 13) + w[15] = r->w15; + if (len >= 14) + w[16] = (r->w16_hi << 3) | r->w16_lo; + if (len >= 14) + w[17] = r->w17; + if (len >= 15) + w[18] = (r->w18_hi << 3) | r->w18_lo; + if (len >= 15) + w[19] = r->w19; + if (len >= 16) + w[20] = (r->w20_hi << 3) | r->w20_lo; + if (len >= 16) + w[21] = r->w21; + f[w[0]].mask |= frqt; + if (w[1]) + f[(w[0] + w[1]) % 1024].mask |= frqt; + if (w[2]) + f[(w[0] + smod(w[1] - 128 + w[2], 255)) % 1024].mask |= frqt; + if (w[3]) + f[(w[0] + smod(w[1] + w[3], 255)) % 1024].mask |= frqt; + if (w[4]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] - 64 + w[4], 127), 255)) % 1024].mask |= frqt; + if (w[5]) + f[(w[0] + smod(w[1] + smod(w[3] - 64 + w[5], 127), 255)) % 1024].mask |= frqt; + if (w[6]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] + w[6], 127), 255)) % 1024].mask |= frqt; + if (w[7]) + f[(w[0] + smod(w[1] + smod(w[3] + w[7], 127), 255)) % 1024].mask |= frqt; + if (w[8]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] - 64 + smod(w[4] - 32 + w[8] , 63), 127), 255)) % 1024].mask |= frqt; + if (w[9]) + f[(w[0] + smod(w[1] + smod(w[3] - 64 + smod(w[5] - 32 + w[9] , 63), 127), 255)) % 1024].mask |= frqt; + if (w[10]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] + smod(w[6] - 32 + w[10], 63), 127), 255)) % 1024].mask |= frqt; + if (w[11]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] - 32 + w[11], 63), 127), 255)) % 1024].mask |= frqt; + if (w[12]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] - 64 + smod(w[4] + w[12], 63), 127), 255)) % 1024].mask |= frqt; + if (w[13]) + f[(w[0] + smod(w[1] + smod(w[3] - 64 + smod(w[5] + w[13], 63), 127), 255)) % 1024].mask |= frqt; + if (w[14]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] + smod(w[6] + w[14], 63), 127), 255)) % 1024].mask |= frqt; + if (w[15]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] + w[15], 63), 127), 255)) % 1024].mask |= frqt; + if (w[16]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] - 64 + smod(w[4] - 32 + smod(w[8] - 16 + w[16], 31), 63), 127), 255)) % 1024].mask |= frqt; + if (w[17]) + f[(w[0] + smod(w[1] + smod(w[3] - 64 + smod(w[5] - 32 + smod(w[9] - 16 + w[17], 31), 63), 127), 255)) % 1024].mask |= frqt; + if (w[18]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] + smod(w[6] - 32 + smod(w[10] - 16 + w[18], 31), 63), 127), 255)) % 1024].mask |= frqt; + if (w[19]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] - 32 + smod(w[11] - 16 + w[19], 31), 63), 127), 255)) % 1024].mask |= frqt; + if (w[20]) + f[(w[0] + smod(w[1] - 128 + smod(w[2] - 64 + smod(w[4] + smod(w[12] - 16 + w[20], 31), 63), 127), 255)) % 1024].mask |= frqt; + if (w[21]) + f[(w[0] + smod(w[1] + smod(w[3] - 64 + smod(w[5] + smod(w[13] - 16 + w[21], 31), 63), 127), 255)) % 1024].mask |= frqt; + + return 0; + } + /* 10..110. */ + if ((cd[0] & 0xce & mask) == 0x8c) { + /* Range 128 format */ + uint16_t w[29]; /* 1..28 */ + struct gsm48_range_128 *r = (struct gsm48_range_128 *)cd; + + if (len < 3) + return -EINVAL; + memset(w, 0, sizeof(w)); + w[0] = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo; + w[1] = r->w1; + if (len >= 4) + w[2] = r->w2; + if (len >= 5) + w[3] = (r->w3_hi << 4) | r->w3_lo; + if (len >= 6) + w[4] = (r->w4_hi << 1) | r->w4_lo; + if (len >= 6) + w[5] = r->w5; + if (len >= 7) + w[6] = (r->w6_hi << 3) | r->w6_lo; + if (len >= 7) + w[7] = r->w7; + if (len >= 8) + w[8] = r->w8; + if (len >= 8) + w[9] = r->w9; + if (len >= 9) + w[10] = r->w10; + if (len >= 9) + w[11] = r->w11; + if (len >= 10) + w[12] = r->w12; + if (len >= 10) + w[13] = r->w13; + if (len >= 11) + w[14] = r->w14; + if (len >= 11) + w[15] = r->w15; + if (len >= 12) + w[16] = r->w16; + if (len >= 12) + w[17] = r->w17; + if (len >= 13) + w[18] = (r->w18_hi << 1) | r->w18_lo; + if (len >= 13) + w[19] = r->w19; + if (len >= 13) + w[20] = r->w20; + if (len >= 14) + w[21] = (r->w21_hi << 2) | r->w21_lo; + if (len >= 14) + w[22] = r->w22; + if (len >= 14) + w[23] = r->w23; + if (len >= 15) + w[24] = r->w24; + if (len >= 15) + w[25] = r->w25; + if (len >= 16) + w[26] = (r->w26_hi << 1) | r->w26_lo; + if (len >= 16) + w[27] = r->w27; + if (len >= 16) + w[28] = r->w28; + f[w[0]].mask |= frqt; + if (w[1]) + f[(w[0] + w[1]) % 1024].mask |= frqt; + if (w[2]) + f[(w[0] + smod(w[1] - 64 + w[2], 127)) % 1024].mask |= frqt; + if (w[3]) + f[(w[0] + smod(w[1] + w[3], 127)) % 1024].mask |= frqt; + if (w[4]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] - 32 + w[4], 63), 127)) % 1024].mask |= frqt; + if (w[5]) + f[(w[0] + smod(w[1] + smod(w[3] - 32 + w[5], 63), 127)) % 1024].mask |= frqt; + if (w[6]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] + w[6], 63), 127)) % 1024].mask |= frqt; + if (w[7]) + f[(w[0] + smod(w[1] + smod(w[3] + w[7], 63), 127)) % 1024].mask |= frqt; + if (w[8]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] - 32 + smod(w[4] - 16 + w[8] , 31), 63), 127)) % 1024].mask |= frqt; + if (w[9]) + f[(w[0] + smod(w[1] + smod(w[3] - 32 + smod(w[5] - 16 + w[9] , 31), 63), 127)) % 1024].mask |= frqt; + if (w[10]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] + smod(w[6] - 16 + w[10], 31), 63), 127)) % 1024].mask |= frqt; + if (w[11]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] - 16 + w[11], 31), 63), 127)) % 1024].mask |= frqt; + if (w[12]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] - 32 + smod(w[4] + w[12], 31), 63), 127)) % 1024].mask |= frqt; + if (w[13]) + f[(w[0] + smod(w[1] + smod(w[3] - 32 + smod(w[5] + w[13], 31), 63), 127)) % 1024].mask |= frqt; + if (w[14]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] + smod(w[6] + w[14], 31), 63), 127)) % 1024].mask |= frqt; + if (w[15]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] + w[15], 31), 63), 127)) % 1024].mask |= frqt; + if (w[16]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] - 32 + smod(w[4] - 16 + smod(w[8] - 8 + w[16], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[17]) + f[(w[0] + smod(w[1] + smod(w[3] - 32 + smod(w[5] - 16 + smod(w[9] - 8 + w[17], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[18]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] + smod(w[6] - 16 + smod(w[10] - 8 + w[18], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[19]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] - 16 + smod(w[11] - 8 + w[19], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[20]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] - 32 + smod(w[4] + smod(w[12] - 8 + w[20], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[21]) + f[(w[0] + smod(w[1] + smod(w[3] - 32 + smod(w[5] + smod(w[13] - 8 + w[21], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[22]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] + smod(w[6] + smod(w[14] - 8 + w[22], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[23]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] + smod(w[15] - 8 + w[23], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[24]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] - 32 + smod(w[4] - 16 + smod(w[8] + w[24], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[25]) + f[(w[0] + smod(w[1] + smod(w[3] - 32 + smod(w[5] - 16 + smod(w[9] + w[25], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[26]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] + smod(w[6] - 16 + smod(w[10] + w[26], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[27]) + f[(w[0] + smod(w[1] + smod(w[3] + smod(w[7] - 16 + smod(w[11] + w[27], 15), 31), 63), 127)) % 1024].mask |= frqt; + if (w[28]) + f[(w[0] + smod(w[1] - 64 + smod(w[2] - 32 + smod(w[4] + smod(w[12] + w[28], 15), 31), 63), 127)) % 1024].mask |= frqt; + + return 0; + } + /* 10..111. */ + if ((cd[0] & 0xce & mask) == 0x8e) { + /* Variable bitmap format (can be any length >= 3) */ + uint16_t orig = 0; + struct gsm48_var_bit *r = (struct gsm48_var_bit *)cd; + + if (len < 3) + return -EINVAL; + orig = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo; + f[orig].mask |= frqt; + for (i = 1; 2 + (i >> 3) < len; i++) + if ((cd[2 + (i >> 3)] & (0x80 >> (i & 7)))) + f[(orig + i) % 1024].mask |= frqt; + + return 0; + } + + return 0; +} +/*! @} */ |