mirror of https://gerrit.osmocom.org/libosmocore
Import gsm48_decode_freq_list() from osmocom-bb/layer23
This will enable us to use this function from OpenBSC / ipaccess-config
This commit is contained in:
parent
18e6298e88
commit
1523d7039d
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@ -104,4 +104,14 @@ int gsm48_encode_ssversion(struct msgb *msg,
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/* encode 'more data' */
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int gsm48_encode_more(struct msgb *msg);
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/* structure of one frequency */
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struct gsm_sysinfo_freq {
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/* if the frequency included in the sysinfo */
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uint8_t mask;
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};
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/* decode "Cell Channel Description" (10.5.2.1b) and other frequency lists */
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int gsm48_decode_freq_list(struct gsm_sysinfo_freq *f, uint8_t *cd,
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uint8_t len, uint8_t mask, uint8_t frqt);
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#endif
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435
src/gsm48_ie.c
435
src/gsm48_ie.c
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@ -32,6 +32,7 @@
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#include <osmocore/tlv.h>
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#include <osmocore/mncc.h>
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#include <osmocore/protocol/gsm_04_08.h>
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#include <osmocore/gsm48_ie.h>
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static const char bcd_num_digits[] = {
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'0', '1', '2', '3', '4', '5', '6', '7',
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@ -657,3 +658,437 @@ int gsm48_encode_more(struct msgb *msg)
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return 0;
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}
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/* decode "Cell Channel Description" (10.5.2.1b) and other frequency lists */
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int gsm48_decode_freq_list(struct gsm_sysinfo_freq *f, uint8_t *cd,
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uint8_t len, uint8_t mask, uint8_t frqt)
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{
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int i;
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/* NOTES:
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*
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* The Range format uses "SMOD" computation.
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* e.g. "n SMOD m" equals "((n - 1) % m) + 1"
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* A cascade of multiple SMOD computations is simpified:
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* "(n SMOD m) SMOD o" equals "(((n - 1) % m) % o) + 1"
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*
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* The Range format uses 16 octets of data in SYSTEM INFORMATION.
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* When used in dedicated messages, the length can be less.
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* In this case the ranges are decoded for all frequencies that
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* fit in the block of given length.
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*/
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/* tabula rasa */
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for (i = 0; i < 1024; i++)
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f[i].mask &= ~frqt;
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/* 00..XXX. */
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if ((cd[0] & 0xc0 & mask) == 0x00) {
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/* Bit map 0 format */
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if (len < 16)
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return -EINVAL;
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for (i = 1; i <= 124; i++)
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if ((cd[15 - ((i-1) >> 3)] & (1 << ((i-1) & 7))))
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f[i].mask |= frqt;
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return 0;
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}
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/* 10..0XX. */
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if ((cd[0] & 0xc8 & mask) == 0x80) {
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/* Range 1024 format */
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uint16_t w[17]; /* 1..16 */
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struct gsm48_range_1024 *r = (struct gsm48_range_1024 *)cd;
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if (len < 2)
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return -EINVAL;
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memset(w, 0, sizeof(w));
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if (r->f0)
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f[0].mask |= frqt;
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w[1] = (r->w1_hi << 8) | r->w1_lo;
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if (len >= 4)
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w[2] = (r->w2_hi << 1) | r->w2_lo;
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if (len >= 5)
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w[3] = (r->w3_hi << 2) | r->w3_lo;
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if (len >= 6)
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w[4] = (r->w4_hi << 2) | r->w4_lo;
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if (len >= 7)
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w[5] = (r->w5_hi << 2) | r->w5_lo;
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if (len >= 8)
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w[6] = (r->w6_hi << 2) | r->w6_lo;
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if (len >= 9)
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w[7] = (r->w7_hi << 2) | r->w7_lo;
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if (len >= 10)
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w[8] = (r->w8_hi << 1) | r->w8_lo;
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if (len >= 10)
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w[9] = r->w9;
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if (len >= 11)
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w[10] = r->w10;
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if (len >= 12)
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w[11] = (r->w11_hi << 6) | r->w11_lo;
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if (len >= 13)
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w[12] = (r->w12_hi << 5) | r->w12_lo;
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if (len >= 14)
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w[13] = (r->w13_hi << 4) | r->w13_lo;
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if (len >= 15)
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w[14] = (r->w14_hi << 3) | r->w14_lo;
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if (len >= 16)
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w[15] = (r->w15_hi << 2) | r->w15_lo;
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if (len >= 16)
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w[16] = r->w16;
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if (w[1])
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f[w[1]].mask |= frqt;
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if (w[2])
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f[((w[1] - 512 + w[2] - 1) % 1023) + 1].mask |= frqt;
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if (w[3])
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f[((w[1] + w[3] - 1) % 1023) + 1].mask |= frqt;
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if (w[4])
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f[((w[1] - 512 + ((w[2] - 256 + w[4] - 1) % 511)) % 1023) + 1].mask |= frqt;
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if (w[5])
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f[((w[1] + ((w[3] - 256 - w[5] - 1) % 511)) % 1023) + 1].mask |= frqt;
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if (w[6])
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f[((w[1] - 512 + ((w[2] + w[6] - 1) % 511)) % 1023) + 1].mask |= frqt;
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if (w[7])
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f[((w[1] + ((w[3] + w[7] - 1) % 511)) % 1023) + 1].mask |= frqt;
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if (w[8])
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f[((w[1] - 512 + ((w[2] - 256 + ((w[4] - 128 + w[8] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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if (w[9])
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f[((w[1] + ((w[3] - 256 + ((w[5] - 128 + w[9] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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if (w[10])
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f[((w[1] - 512 + ((w[2] + ((w[6] - 128 + w[10] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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if (w[11])
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f[((w[1] + ((w[3] + ((w[7] - 128 + w[11] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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if (w[12])
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f[((w[1] - 512 + ((w[2] - 256 + ((w[4] + w[12] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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if (w[13])
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f[((w[1] + ((w[3] - 256 + ((w[5] + w[13] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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if (w[14])
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f[((w[1] - 512 + ((w[2] + ((w[6] + w[14] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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if (w[15])
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f[((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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if (w[16])
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f[((w[1] - 512 + ((w[2] - 256 + ((w[4] - 128 + ((w[8] - 64 + w[16] - 1) % 127)) % 255)) % 511)) % 1023) + 1].mask |= frqt;
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return 0;
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}
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/* 10..100. */
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if ((cd[0] & 0xce & mask) == 0x88) {
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/* Range 512 format */
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uint16_t w[18]; /* 1..17 */
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struct gsm48_range_512 *r = (struct gsm48_range_512 *)cd;
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if (len < 4)
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return -EINVAL;
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memset(w, 0, sizeof(w));
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w[0] = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo;
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w[1] = (r->w1_hi << 2) | r->w1_lo;
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if (len >= 5)
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w[2] = (r->w2_hi << 2) | r->w2_lo;
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if (len >= 6)
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w[3] = (r->w3_hi << 2) | r->w3_lo;
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if (len >= 7)
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w[4] = (r->w4_hi << 1) | r->w4_lo;
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if (len >= 7)
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w[5] = r->w5;
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if (len >= 8)
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w[6] = r->w6;
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if (len >= 9)
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w[7] = (r->w7_hi << 6) | r->w7_lo;
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if (len >= 10)
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w[8] = (r->w8_hi << 4) | r->w8_lo;
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if (len >= 11)
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w[9] = (r->w9_hi << 2) | r->w9_lo;
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if (len >= 11)
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w[10] = r->w10;
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if (len >= 12)
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w[11] = r->w11;
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if (len >= 13)
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w[12] = (r->w12_hi << 4) | r->w12_lo;
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if (len >= 14)
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w[13] = (r->w13_hi << 2) | r->w13_lo;
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if (len >= 14)
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w[14] = r->w14;
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if (len >= 15)
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w[15] = r->w15;
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if (len >= 16)
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w[16] = (r->w16_hi << 3) | r->w16_lo;
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if (len >= 16)
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w[17] = r->w17;
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f[w[0]].mask |= frqt;
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if (w[1])
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f[(w[0] + w[1]) % 1024].mask |= frqt;
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if (w[2])
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f[(w[0] + ((w[1] - 256 + w[2] - 1) % 511) + 1) % 1024].mask |= frqt;
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if (w[3])
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f[(w[0] + ((w[1] + w[3] - 1) % 511) + 1) % 1024].mask |= frqt;
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if (w[4])
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f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + w[4] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[5])
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f[(w[0] + ((w[1] + ((w[3] - 128 + w[5] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[6])
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f[(w[0] + ((w[1] - 256 + ((w[2] + w[6] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[7])
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f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[8])
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f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] - 64 + w[8] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[9])
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f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] - 64 + w[9] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[10])
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f[(w[0] + ((w[1] - 256 + ((w[2] + ((w[6] - 64 + w[10] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[11])
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f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 64 + w[11] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[12])
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f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] + w[12] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[13])
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f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] + w[13] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[14])
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f[(w[0] + ((w[1] - 256 + ((w[2] + ((w[6] + w[14] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[15])
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f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[16])
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f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] - 64 + ((w[8] - 32 + w[16] - 1) % 63)) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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if (w[17])
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f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] - 64 + ((w[9] - 32 + w[17] - 1) % 63)) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
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return 0;
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}
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/* 10..101. */
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if ((cd[0] & 0xce & mask) == 0x8a) {
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/* Range 256 format */
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uint16_t w[22]; /* 1..21 */
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struct gsm48_range_256 *r = (struct gsm48_range_256 *)cd;
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if (len < 4)
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return -EINVAL;
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memset(w, 0, sizeof(w));
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w[0] = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo;
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w[1] = (r->w1_hi << 1) | r->w1_lo;
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if (len >= 4)
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w[2] = r->w2;
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if (len >= 5)
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w[3] = r->w3;
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if (len >= 6)
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w[4] = (r->w4_hi << 5) | r->w4_lo;
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if (len >= 7)
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w[5] = (r->w5_hi << 3) | r->w5_lo;
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if (len >= 8)
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w[6] = (r->w6_hi << 1) | r->w6_lo;
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if (len >= 8)
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w[7] = r->w7;
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if (len >= 9)
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w[8] = (r->w8_hi << 4) | r->w8_lo;
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if (len >= 10)
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w[9] = (r->w9_hi << 1) | r->w9_lo;
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if (len >= 10)
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w[10] = r->w10;
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if (len >= 11)
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w[11] = (r->w11_hi << 3) | r->w11_lo;
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if (len >= 11)
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w[12] = r->w12;
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if (len >= 12)
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w[13] = r->w13;
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if (len >= 13)
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w[14] = r->w15;
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if (len >= 13)
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w[15] = (r->w14_hi << 2) | r->w14_lo;
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if (len >= 14)
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w[16] = (r->w16_hi << 3) | r->w16_lo;
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if (len >= 14)
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w[17] = r->w17;
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if (len >= 15)
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w[18] = r->w19;
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if (len >= 15)
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w[19] = (r->w18_hi << 3) | r->w18_lo;
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if (len >= 16)
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w[20] = (r->w20_hi << 3) | r->w20_lo;
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if (len >= 16)
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w[21] = r->w21;
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f[w[0]].mask |= frqt;
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if (w[1])
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f[(w[0] + w[1]) % 1024].mask |= frqt;
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if (w[2])
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f[(w[0] + ((w[1] - 128 + w[2] - 1) % 255) + 1) % 1024].mask |= frqt;
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if (w[3])
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f[(w[0] + ((w[1] + w[3] - 1) % 255) + 1) % 1024].mask |= frqt;
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if (w[4])
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f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + w[4] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[5])
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f[(w[0] + ((w[1] + ((w[3] - 64 + w[5] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[6])
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f[(w[0] + ((w[1] - 128 + ((w[2] + w[6] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[7])
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f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[8])
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f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] - 32 + w[8] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[9])
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f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] - 32 + w[9] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[10])
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f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] - 32 + w[10] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[11])
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f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 32 + w[11] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[12])
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f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] + w[12] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[13])
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f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] + w[13] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[14])
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f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] + w[14] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[15])
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f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[16])
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f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] - 32 + ((w[8] - 16 + w[16] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[17])
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f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] - 32 + ((w[9] - 16 + w[17] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[18])
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f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] - 32 + ((w[10] - 16 + w[18] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[19])
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f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 32 + ((w[11] - 16 + w[19] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[20])
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f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] + ((w[12] - 16 + w[20] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
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if (w[21])
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f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] + ((w[13] - 16 + w[21] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 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] + ((w[1] - 64 + w[2] - 1) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[3])
|
||||
f[(w[0] + ((w[1] + w[3] - 1) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[4])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + w[4] - 1) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[5])
|
||||
f[(w[0] + ((w[1] + ((w[3] - 32 + w[5] - 1) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[6])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] + w[6] - 1) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[7])
|
||||
f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[8])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] - 16 + w[8] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[9])
|
||||
f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] - 16 + w[9] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[10])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] - 16 + w[10] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[11])
|
||||
f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 16 + w[11] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[12])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] + w[12] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[13])
|
||||
f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] + w[13] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[14])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] + w[14] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[15])
|
||||
f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[16])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] - 16 + ((w[8] - 8 + w[16] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[17])
|
||||
f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] - 16 + ((w[9] - 8 + w[17] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[18])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] - 16 + ((w[10] - 8 + w[18] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[19])
|
||||
f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 16 + ((w[11] - 8 + w[19] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[20])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] + ((w[12] - 8 + w[20] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[21])
|
||||
f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] + ((w[13] - 8 + w[21] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[22])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] + ((w[14] - 8 + w[22] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[23])
|
||||
f[(w[0] + ((w[1] + ((w[3] + ((w[7] + ((w[15] - 8 + w[23] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[24])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] - 16 + ((w[8] + w[24] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[25])
|
||||
f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] - 16 + ((w[9] + w[25] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[26])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] - 16 + ((w[10] + w[26] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[27])
|
||||
f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 16 + ((w[11] + w[27] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt;
|
||||
if (w[28])
|
||||
f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] + ((w[12] + w[28] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 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;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue