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authorAndreas Eversberg2010-03-16 20:18:45 +0100
committerAndreas Eversberg2010-03-16 20:18:45 +0100
commit7f60fda60d76ad4b28631f360b4deb4989123abe (patch)
tree78a6244c8a9a54ee6ba7109aa39c31e55270e5a5 /src/host/gsm48-andreas
parentWork on Radio Ressource (diff)
downloadosmocom-7f60fda60d76ad4b28631f360b4deb4989123abe.tar.gz
osmocom-7f60fda60d76ad4b28631f360b4deb4989123abe.tar.xz
osmocom-7f60fda60d76ad4b28631f360b4deb4989123abe.zip
Work on Radio Ressource
Diffstat (limited to 'src/host/gsm48-andreas')
-rw-r--r--src/host/gsm48-andreas/gsm48_rr.c1760
-rw-r--r--src/host/gsm48-andreas/issues.txt1
-rw-r--r--src/host/gsm48-andreas/sysinfo.h6
3 files changed, 921 insertions, 846 deletions
diff --git a/src/host/gsm48-andreas/gsm48_rr.c b/src/host/gsm48-andreas/gsm48_rr.c
index fb3beb1..c3227bf 100644
--- a/src/host/gsm48-andreas/gsm48_rr.c
+++ b/src/host/gsm48-andreas/gsm48_rr.c
@@ -584,6 +584,833 @@ static int gsm_rr_rand_acc_cnf(struct osmocom_ms *ms, struct msgb *msg)
}
/*
+ * system information
+ */
+
+/* decode "Cell Channel Description" (10.5.2.1b) and other frequency lists */
+static 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;
+ }
+
+ /* only Bit map 0 format for P-GSM */
+ if (ms->support.p_gsm && !ms->support.e_gsm
+ && !ms->support.r_gsm && !ms->support.dcs_1800)
+ return 0;
+
+ /* 10..0XX. */
+ if ((cd[0] & 0xc8 & mask) == 0x80) {
+ /* Range 1024 format */
+ uint16_t w[17]; /* 1..16 */
+ struct gsm_range_1024 *r = (struct gsm_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[((w[1] - 512 + w[2] - 1) % 1023) + 1].mask |= frqt;
+ if (w[3])
+ f[((w[1] + w[3] - 1) % 1023) + 1].mask |= frqt;
+ if (w[4])
+ f[((w[1] - 512 + ((w[2] - 256 + w[4] - 1) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[5])
+ f[((w[1] + ((w[3] - 256 - w[5] - 1) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[6])
+ f[((w[1] - 512 + ((w[2] + w[6] - 1) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[7])
+ f[((w[1] + ((w[3] + w[7] - 1) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[8])
+ f[((w[1] - 512 + ((w[2] - 256 + ((w[4] - 128 + w[8] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[9])
+ f[((w[1] + ((w[3] - 256 + ((w[5] - 128 + w[9] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[10])
+ f[((w[1] - 512 + ((w[2] + ((w[6] - 128 + w[10] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[11])
+ f[((w[1] + ((w[3] + ((w[7] - 128 + w[11] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[12])
+ f[((w[1] - 512 + ((w[2] - 256 + ((w[4] + w[12] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[13])
+ f[((w[1] + ((w[3] - 256 + ((w[5] + w[13] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[14])
+ f[((w[1] - 512 + ((w[2] + ((w[6] + w[14] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[15])
+ f[((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+ if (w[16])
+ f[((w[1] - 512 + ((w[2] - 256 + ((w[4] - 128 + ((w[8] - 64 + w[16] - 1) % 127)) % 255)) % 511)) % 1023) + 1].mask |= frqt;
+
+ return 0;
+ }
+ /* 10..100. */
+ if ((cd[0] & 0xce & mask) == 0x88) {
+ /* Range 512 format */
+ uint16_t w[18]; /* 1..17 */
+ struct gsm_range_512 *r = (struct gsm_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;
+ if (w[0])
+ f[w[0]].mask |= frqt;
+ if (w[1])
+ f[(w[0] + w[1]) % 1024].mask |= frqt;
+ if (w[2])
+ f[(w[0] + ((w[1] - 256 + w[2] - 1) % 511) + 1) % 1024].mask |= frqt;
+ if (w[3])
+ f[(w[0] + ((w[1] + w[3] - 1) % 511) + 1) % 1024].mask |= frqt;
+ if (w[4])
+ f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + w[4] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[5])
+ f[(w[0] + ((w[1] + ((w[3] - 128 + w[5] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[6])
+ f[(w[0] + ((w[1] - 256 + ((w[2] + w[6] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[7])
+ f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[8])
+ f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] - 64 + w[8] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[9])
+ f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] - 64 + w[9] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[10])
+ f[(w[0] + ((w[1] - 256 + ((w[2] + ((w[6] - 64 + w[10] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[11])
+ f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 64 + w[11] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[12])
+ f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] + w[12] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[13])
+ f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] + w[13] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[14])
+ f[(w[0] + ((w[1] - 256 + ((w[2] + ((w[6] + w[14] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[15])
+ f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
+ if (w[16])
+ 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;
+ if (w[17])
+ 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;
+
+ return 0;
+ }
+ /* 10..101. */
+ if ((cd[0] & & mask 0xce) == 0x8a) {
+ /* Range 256 format */
+ uint16_t w[22]; /* 1..21 */
+ struct gsm_range_256 *r = (struct gsm_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->w15;
+ if (len >= 13)
+ w[15] = (r->w14_hi << 2) || r->w14_lo;
+ 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->w19;
+ if (len >= 15)
+ w[19] = (r->w18_hi << 3) || r->w18_lo;
+ if (len >= 16)
+ w[20] = (r->w20_hi << 3) || r->w20_lo;
+ if (len >= 16)
+ w[21] = r->w21;
+ if (w[0])
+ f[w[0]].mask |= frqt;
+ if (w[1])
+ f[(w[0] + w[1]) % 1024].mask |= frqt;
+ if (w[2])
+ f[(w[0] + ((w[1] - 128 + w[2] - 1) % 255) + 1) % 1024].mask |= frqt;
+ if (w[3])
+ f[(w[0] + ((w[1] + w[3] - 1) % 255) + 1) % 1024].mask |= frqt;
+ if (w[4])
+ f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + w[4] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[5])
+ f[(w[0] + ((w[1] + ((w[3] - 64 + w[5] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[6])
+ f[(w[0] + ((w[1] - 128 + ((w[2] + w[6] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[7])
+ f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[8])
+ f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] - 32 + w[8] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[9])
+ f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] - 32 + w[9] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[10])
+ f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] - 32 + w[10] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[11])
+ f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 32 + w[11] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[12])
+ f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] + w[12] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[13])
+ f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] + w[13] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[14])
+ f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] + w[14] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[15])
+ f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[16])
+ 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;
+ if (w[17])
+ 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;
+ if (w[18])
+ 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;
+ if (w[19])
+ f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 32 + ((w[11] - 16 + w[19] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
+ if (w[20])
+ 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;
+ if (w[21])
+ 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 gsm_range_128 *r = (struct gsm_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;
+ if (w[0])
+ 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 gsm_var_bit *r = (struct gsm_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 + 1) % 1024].mask |= frqt;
+
+ return 0;
+ }
+
+}
+
+/* decode "Cell Options (BCCH)" (10.5.2.3) */
+static int gsm48_decode_cell_sel_param(struct gsm48_sysinfo *s, struct gsm48_cell_sel_par *cs)
+{
+ s->ms_txpwr_max_ccch = cs->ms_txpwr_max_ccch;
+ s->cell_resel_hyst_db = cs->cell_resel_hyst * 2;
+ s->rxlev_acc_min_db = cs->rxlev_acc_min - 110;
+ s->neci = cs->neci;
+ s->acs = cs->acs;
+}
+
+/* decode "Cell Options (BCCH)" (10.5.2.3) */
+static int gsm48_decode_cellopt_bcch(struct gsm48_sysinfo *s, struct gsm48_cell_options *co)
+{
+ s->bcch_radio_link_timeout = (co->radio_link_timeout + 1) * 4;
+ s->bcch_dtx = co->dtx;
+ s->bcch_pwrc = co->pwrc;
+}
+
+/* decode "Cell Options (SACCH)" (10.5.2.3a) */
+static int gsm48_decode_cellopt_sacch(struct gsm48_sysinfo *s, struct gsm48_cell_options *co)
+{
+ s->sacch_radio_link_timeout = (co->radio_link_timeout + 1) * 4;
+ s->sacch_dtx = co->dtx;
+ s->sacch_pwrc = co->pwrc;
+}
+
+/* decode "Cell Channel Description" (10.5.2.11) */
+static int gsm48_decode_ccd(struct gsm48_sysinfo *s, struct gsm48_control_channel_desc *cc)
+{
+ s->ccch_conf = cc->ccch_conf;
+ s->bs_ag_blks_res = cc->bs_ag_blks_res;
+ s->att_allowed = cc->att;
+ s->pag_mf_periods = cc->bs_pa_mfrms + 2;
+ s->t3212 = cc->t3212 * 360; /* convert deci-hours to seconds */
+}
+
+/* decode "Mobile Allocation" (10.5.2.21) */
+static int gsm48_decode_mobile_alloc(struct gsm48_sysinfo *s, uint8_t *ma, uint8_t len)
+{
+ int i, j = 0;
+ uint16_t f[len << 3];
+
+ /* not more than 64 hopping indexes allowed in IE */
+ if (len > 8)
+ return -EINVAL;
+
+ /* tabula rasa */
+ s->hopp_len = 0;
+ for (i = 0; i < 1024; i++)
+ s->freq[i] &= ~FREQ_TYPE_HOPP;
+
+ /* generating list of all frequencies (1..1023,0) */
+ for (i = 1; i <= 1024; i++) {
+ if ((s->freq[i & 1023] & FREQ_TYPE_SERV)) {
+ f[j++] = i & 1023;
+ if (j == (len << 3))
+ break;
+ }
+ }
+
+ /* fill hopping table with frequency index given by IE
+ * and set hopping type bits
+ */
+ for (i = 0, i < (len << 3), i++) {
+ /* if bit is set, this frequency index is used for hopping */
+ if ((ma[len - 1 - (i >> 3)] & (1 << (i & 7)))) {
+ /* index higher than entries in list ? */
+ if (i >= j) {
+ DEBUGP(DRR, "Mobile Allocation hopping index "
+ "%d exceeds maximum number of cell "
+ "frequencies. (%d)\n", i + 1, j);
+ break;
+ }
+ hopping[s->hopp_len++] = f[i];
+ s->freq[f[i]] |= FREQ_TYPE_HOPP;
+ }
+ }
+
+ return 0;
+}
+
+/* Rach Control decode tables */
+static uint8_t gsm48_max_retrans[4] = {
+ 1, 2, 4, 7
+}
+static uint8_t gsm48_tx_integer[16] = {
+ 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 20, 25, 32, 50
+}
+
+/* decode "RACH Control Parameter" (10.5.2.29) */
+static int gsm48_decode_rach_ctl_param(struct gsm48_sysinfo *s, struct gsm48_rach_ctl *rc)
+{
+ int i;
+
+ s->reest_denied = rc->re;
+ s->cell_barred = rc->cell_barr;
+ s->tx_integer = gsm48_tx_integer[rc->tx_int];
+ s->max_retrans = gsm48_max_retrans[rc->max_retr];
+ for (i = 0, i <= 15, i++)
+ if ((rc->ac[1 - (i >> 3)] & (1 << (i & 7))))
+ s->class_barr[i] = 1;
+ else
+ s->class_barr[i] = 0;
+
+ return 0;
+}
+static int gsm48_decode_rach_ctl_neigh(struct gsm48_sysinfo *s, struct gsm48_rach_ctl *rc)
+{
+ int i;
+
+ s->nb_reest_denied = rc->re;
+ s->nb_cell_barred = rc->cell_barr;
+ s->nb_tx_integer = gsm48_tx_integer[rc->tx_int];
+ s->nb_max_retrans = gsm48_max_retrans[rc->max_retr];
+ for (i = 0, i <= 15, i++)
+ if ((rc->ac[1 - (i >> 3)] & (1 << (i & 7))))
+ s->nb_class_barr[i] = 1;
+ else
+ s->nb_class_barr[i] = 0;
+
+ return 0;
+}
+
+/* decode "SI 1 Rest Octets" (10.5.2.32) */
+static int gsm48_decode_si1_rest(struct gsm48_sysinfo *s, uint8_t *si, uint8_t len)
+{
+}
+
+/* decode "SI 3 Rest Octets" (10.5.2.34) */
+static int gsm48_decode_si3_rest(struct gsm48_sysinfo *s, uint8_t *si, uint8_t len)
+{
+}
+
+/* decode "SI 4 Rest Octets" (10.5.2.35) */
+static int gsm48_decode_si4_rest(struct gsm48_sysinfo *s, uint8_t *si, uint8_t len)
+{
+}
+
+/* decode "SI 6 Rest Octets" (10.5.2.35a) */
+static int gsm48_decode_si6_rest(struct gsm48_sysinfo *s, uint8_t *si, uint8_t len)
+{
+}
+
+/* receive "SYSTEM INFORMATION 1" message (9.1.31) */
+static int gsm_rr_rx_sysinfo1(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_1 *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 1 message.\n");
+ return -EINVAL;
+ }
+ /* Cell Channel Description */
+ gsm48_decode_freq_list(s->freq, si->cell_channel_description,
+ sizeof(si->cell_channel_description), 0xce, FREQ_TYPE_SERV);
+ /* RACH Control Parameter */
+ gsm48_decode_rach_ctl_param(s, si->rach_control);
+ /* SI 1 Rest Octets */
+ if (payload_len)
+ gsm48_decode_si1_rest(si->rest_octets, payload_len);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 2" message (9.1.32) */
+static int gsm_rr_rx_sysinfo2(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_2 *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 2 message.\n");
+ return -EINVAL;
+ }
+ /* Neighbor Cell Description */
+ gsm48_decode_freq_list(s->freq, si->bcch_frequency_list,
+ sizeof(si->bcch_frequency_list), 0xce, FREQ_TYPE_NCELL_2);
+ /* NCC Permitted */
+ s->nb_ncc_permitted = si->ncc_permitted;
+ /* RACH Control Parameter */
+ gsm48_decode_rach_ctl_neigh(s, si->rach_control);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 2bis" message (9.1.33) */
+static int gsm_rr_rx_sysinfo2bis(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_2bis *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 2bis message.\n");
+ return -EINVAL;
+ }
+ /* Neighbor Cell Description */
+ s->nb_ext_ind = (si->bcch_frequency_list[0] >> 6) & 1;
+ s->nb_ba_ind = (si->bcch_frequency_list[0] >> 5) & 1;
+ gsm48_decode_freq_list(s->freq, si->ext_bcch_frequency_list,
+ sizeof(si->ext_bcch_frequency_list), 0x8e, FREQ_TYPE_NCELL_2bis);
+ /* RACH Control Parameter */
+ gsm48_decode_rach_ctl_neigh(s, si->rach_control);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 2ter" message (9.1.34) */
+static int gsm_rr_rx_sysinfo2ter(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_2ter *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 2ter message.\n");
+ return -EINVAL;
+ }
+ /* Neighbor Cell Description 2 */
+ s->nb_multi_rep = (si->bcch_frequency_list[0] >> 6) & 3;
+ gsm48_decode_freq_list(s->freq, si->ext_bcch_frequency_list,
+ sizeof(si->ext_bcch_frequency_list), 0x8e, FREQ_TYPE_NCELL_2ter);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 3" message (9.1.35) */
+static int gsm_rr_rx_sysinfo3(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_3 *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 3 message.\n");
+ return -EINVAL;
+ }
+ /* Cell Identity */
+ s->cell_identity = ntohl(si->cell_identity);
+ /* LAI */
+ gsm48_decode_lai(si->lai, s->mcc, s->mnc, s->lac);
+ /* Control Channel Description */
+ gsm48_decode_ccd(s, si->control_channel_desc);
+ /* Cell Options (BCCH) */
+ gsm48_decode_cellopt_bcch(s, si->control_channel_desc);
+ /* Cell Selection Parameters */
+ gsm48_decode_cell_sel_param(s, si->cell_sel_par);
+ /* RACH Control Parameter */
+ gsm48_decode_rach_ctl_param(s, si->rach_control);
+ /* SI 3 Rest Octets */
+ if (payload_len >= 4)
+ gsm48_decode_si3_rest(si->rest_octets, payload_len);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 4" message (9.1.36) */
+static int gsm_rr_rx_sysinfo4(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_4 *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+ uint8_t *data = si->data;
+todo: si has different header in structures
+
+ if (payload_len < 0) {
+ short_read:
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 4 message.\n");
+ return -EINVAL;
+ }
+ /* LAI */
+ gsm48_decode_lai(si->lai, s->mcc, s->mnc, s->lac);
+ /* Cell Selection Parameters */
+ gsm48_decode_cell_sel_param(s, si->cell_sel_par);
+ /* RACH Control Parameter */
+ gsm48_decode_rach_ctl_param(s, si->rach_control);
+ /* CBCH Channel Description */
+ if (payload_len >= 1 && data[0] == GSM48_IE_CBCH_CHAN_DES) {
+ if (payload_len < 4)
+ goto short_read;
+ memcpy(&s->chan_desc, data + 1, sizeof(s->chan_desc));
+ payload_len -= 4;
+ data += 4;
+ }
+ /* CBCH Mobile Allocation */
+ if (payload_len >= 1 && data[0] == GSM48_IE_CBCH_MOB_ALLOC) {
+ if (payload_len < 1 || payload_len < 2 + data[1])
+ goto short_read;
+ gsm48_decode_mobile_alloc(&s, data + 2, si->data[1]);
+ payload_len -= 2 + data[1];
+ data += 2 + data[1];
+ }
+ /* SI 4 Rest Octets */
+ if (payload_len > 0)
+ gsm48_decode_si3_rest(data, payload_len);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 5" message (9.1.37) */
+static int gsm_rr_rx_sysinfo5(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_5 *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 5 message.\n");
+ return -EINVAL;
+ }
+ /* Neighbor Cell Description */
+ gsm48_decode_freq_list(s->freq, si->bcch_frequency_list,
+ sizeof(si->bcch_frequency_list), 0xce, FREQ_TYPE_REP_5);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 5bis" message (9.1.38) */
+static int gsm_rr_rx_sysinfo5bis(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_5bis *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 5bis message.\n");
+ return -EINVAL;
+ }
+ /* Neighbor Cell Description */
+ gsm48_decode_freq_list(s->freq, si->bcch_frequency_list,
+ sizeof(si->bcch_frequency_list), 0xce, FREQ_TYPE_REP_5bis);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 5ter" message (9.1.39) */
+static int gsm_rr_rx_sysinfo5ter(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_5ter *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 5ter message.\n");
+ return -EINVAL;
+ }
+ /* Neighbor Cell Description */
+ gsm48_decode_freq_list(s->freq, si->bcch_frequency_list,
+ sizeof(si->bcch_frequency_list), 0xce, FREQ_TYPE_REP_5ter);
+
+ return 0;
+}
+
+/* receive "SYSTEM INFORMATION 6" message (9.1.39) */
+static int gsm_rr_rx_sysinfo6(struct osmocom_ms *ms, struct msgb *msg)
+{
+ struct gsm48_system_information_type_6 *si = msgb_l3(msg);
+ struct gsm48_sysinfo *s = ms->sysinfo;
+ int payload_len = msgb_l3len(msg) - sizeof(*si);
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of SYSTEM INFORMATION 6 message.\n");
+ return -EINVAL;
+ }
+ /* Cell Identity */
+ s->cell_identity = ntohl(si->cell_identity);
+ /* LAI */
+ gsm48_decode_lai(si->lai, s->mcc, s->mnc, s->lac);
+ /* Cell Options (SACCH) */
+ gsm48_decode_cellopt_sacch(s, si->control_channel_desc);
+ /* NCC Permitted */
+ s->nb_ncc_permitted = si->ncc_permitted;
+ /* SI 6 Rest Octets */
+ if (payload_len >= 4)
+ gsm48_decode_si6_rest(si->rest_octets, payload_len);
+
+ return 0;
+}
+
+/*
* paging
*/
@@ -1302,6 +2129,26 @@ static int gsm_rr_unit_data_ind(struct osmocom_ms *ms, struct msgb *msg)
struct gsm48_hdr *gh = msgb_l3(msg);
switch (gh->msg_type) {
+ case GSM48_MT_RR_SYSINFO_1:
+ return gsm_rr_rx_sysinfo1(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_2:
+ return gsm_rr_rx_sysinfo2(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_2bis:
+ return gsm_rr_rx_sysinfo2bis(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_2ter:
+ return gsm_rr_rx_sysinfo2ter(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_3:
+ return gsm_rr_rx_sysinfo3(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_4:
+ return gsm_rr_rx_sysinfo4(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_5:
+ return gsm_rr_rx_sysinfo5(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_5bis:
+ return gsm_rr_rx_sysinfo5bis(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_5ter:
+ return gsm_rr_rx_sysinfo5ter(ms, dlmsg->msg);
+ case GSM48_MT_RR_SYSINFO_6:
+ return gsm_rr_rx_sysinfo6(ms, dlmsg->msg);
case GSM48_MT_RR_PAG_REQ_1:
return gsm_rr_rx_pag_req_1(ms, dlmsg->msg);
case GSM48_MT_RR_PAG_REQ_2:
@@ -1342,797 +2189,6 @@ uncomplete
-/*
- * system information
- */
-
-/* decode "Cell Channel Description" (10.5.2.1b) and other frequency lists */
-static 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;
- }
-
- /* only Bit map 0 format for P-GSM */
- if (ms->support.p_gsm && !ms->support.e_gsm
- && !ms->support.r_gsm && !ms->support.dcs_1800)
- return 0;
-
- /* 10..0XX. */
- if ((cd[0] & 0xc8 & mask) == 0x80) {
- /* Range 1024 format */
- uint16_t w[17]; /* 1..16 */
- struct gsm_range_1024 *r = (struct gsm_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[((w[1] - 512 + w[2] - 1) % 1023) + 1].mask |= frqt;
- if (w[3])
- f[((w[1] + w[3] - 1) % 1023) + 1].mask |= frqt;
- if (w[4])
- f[((w[1] - 512 + ((w[2] - 256 + w[4] - 1) % 511)) % 1023) + 1].mask |= frqt;
- if (w[5])
- f[((w[1] + ((w[3] - 256 - w[5] - 1) % 511)) % 1023) + 1].mask |= frqt;
- if (w[6])
- f[((w[1] - 512 + ((w[2] + w[6] - 1) % 511)) % 1023) + 1].mask |= frqt;
- if (w[7])
- f[((w[1] + ((w[3] + w[7] - 1) % 511)) % 1023) + 1].mask |= frqt;
- if (w[8])
- f[((w[1] - 512 + ((w[2] - 256 + ((w[4] - 128 + w[8] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
- if (w[9])
- f[((w[1] + ((w[3] - 256 + ((w[5] - 128 + w[9] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
- if (w[10])
- f[((w[1] - 512 + ((w[2] + ((w[6] - 128 + w[10] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
- if (w[11])
- f[((w[1] + ((w[3] + ((w[7] - 128 + w[11] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
- if (w[12])
- f[((w[1] - 512 + ((w[2] - 256 + ((w[4] + w[12] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
- if (w[13])
- f[((w[1] + ((w[3] - 256 + ((w[5] + w[13] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
- if (w[14])
- f[((w[1] - 512 + ((w[2] + ((w[6] + w[14] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
- if (w[15])
- f[((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt;
- if (w[16])
- f[((w[1] - 512 + ((w[2] - 256 + ((w[4] - 128 + ((w[8] - 64 + w[16] - 1) % 127)) % 255)) % 511)) % 1023) + 1].mask |= frqt;
-
- return 0;
- }
- /* 10..100. */
- if ((cd[0] & 0xce & mask) == 0x88) {
- /* Range 512 format */
- uint16_t w[18]; /* 1..17 */
- struct gsm_range_512 *r = (struct gsm_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;
- if (w[0])
- f[w[0]].mask |= frqt;
- if (w[1])
- f[(w[0] + w[1]) % 1024].mask |= frqt;
- if (w[2])
- f[(w[0] + ((w[1] - 256 + w[2] - 1) % 511) + 1) % 1024].mask |= frqt;
- if (w[3])
- f[(w[0] + ((w[1] + w[3] - 1) % 511) + 1) % 1024].mask |= frqt;
- if (w[4])
- f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + w[4] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[5])
- f[(w[0] + ((w[1] + ((w[3] - 128 + w[5] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[6])
- f[(w[0] + ((w[1] - 256 + ((w[2] + w[6] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[7])
- f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[8])
- f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] - 64 + w[8] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[9])
- f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] - 64 + w[9] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[10])
- f[(w[0] + ((w[1] - 256 + ((w[2] + ((w[6] - 64 + w[10] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[11])
- f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 64 + w[11] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[12])
- f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] + w[12] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[13])
- f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] + w[13] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[14])
- f[(w[0] + ((w[1] - 256 + ((w[2] + ((w[6] + w[14] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[15])
- f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt;
- if (w[16])
- 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;
- if (w[17])
- 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;
-
- return 0;
- }
- /* 10..101. */
- if ((cd[0] & & mask 0xce) == 0x8a) {
- /* Range 256 format */
- uint16_t w[22]; /* 1..21 */
- struct gsm_range_256 *r = (struct gsm_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->w15;
- if (len >= 13)
- w[15] = (r->w14_hi << 2) || r->w14_lo;
- 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->w19;
- if (len >= 15)
- w[19] = (r->w18_hi << 3) || r->w18_lo;
- if (len >= 16)
- w[20] = (r->w20_hi << 3) || r->w20_lo;
- if (len >= 16)
- w[21] = r->w21;
- if (w[0])
- f[w[0]].mask |= frqt;
- if (w[1])
- f[(w[0] + w[1]) % 1024].mask |= frqt;
- if (w[2])
- f[(w[0] + ((w[1] - 128 + w[2] - 1) % 255) + 1) % 1024].mask |= frqt;
- if (w[3])
- f[(w[0] + ((w[1] + w[3] - 1) % 255) + 1) % 1024].mask |= frqt;
- if (w[4])
- f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + w[4] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[5])
- f[(w[0] + ((w[1] + ((w[3] - 64 + w[5] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[6])
- f[(w[0] + ((w[1] - 128 + ((w[2] + w[6] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[7])
- f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[8])
- f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] - 32 + w[8] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[9])
- f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] - 32 + w[9] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[10])
- f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] - 32 + w[10] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[11])
- f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 32 + w[11] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[12])
- f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] + w[12] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[13])
- f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] + w[13] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[14])
- f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] + w[14] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[15])
- f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[16])
- 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;
- if (w[17])
- 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;
- if (w[18])
- 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;
- if (w[19])
- f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 32 + ((w[11] - 16 + w[19] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt;
- if (w[20])
- 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;
- if (w[21])
- 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 gsm_range_128 *r = (struct gsm_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;
- if (w[0])
- 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 gsm_var_bit *r = (struct gsm_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 + 1) % 1024].mask |= frqt;
-
- return 0;
- }
-
-}
-
-/* decode "Cell Options (BCCH)" (10.5.2.3) */
-static int gsm48_decode_cell_sel_param(struct gsm48_sysinfo *s, struct gsm48_cell_sel_par *cs)
-{
- s->radio_link_timeout = (cs->radio_link_timeout + 1) * 4;
- s->dtx = cs->dtx;
- s->pwrc = cs->pwrc;
-}
-
-/* decode "Cell Options (BCCH)" (10.5.2.3) */
-static int gsm48_decode_cellopt(struct gsm48_sysinfo *s, struct gsm48_cell_options *co)
-{
- s->ms_txpwr_max_ccch = co->ms_txpwr_max_ccch;
- s->cell_resel_hyst_db = co->cell_resel_hyst * 2;
- s->rxlev_acc_min_db = co->rxlev_acc_min - 110;
- s->neci = co->neci;
- s->acs = co->acs;
-}
-
-/* decode "Cell Channel Description" (10.5.2.11) */
-static int gsm48_decode_ccd(struct gsm48_sysinfo *s, struct gsm48_control_channel_desc *cc)
-{
- s->ccch_conf = cc->ccch_conf;
- s->bs_ag_blks_res = cc->bs_ag_blks_res;
- s->att_allowed = cc->att;
- s->pag_mf_periods = cc->bs_pa_mfrms + 2;
- s->t3212 = cc->t3212 * 360; /* convert deci-hours to seconds */
-}
-
-/* decode "Mobile Allocation" (10.5.2.21) */
-static int gsm48_decode_mobile_alloc(struct gsm48_sysinfo *s, uint8_t *ma, uint8_t len)
-{
- int i, j = 0;
- uint16_t f[len << 3];
-
- /* not more than 64 hopping indexes allowed in IE */
- if (len > 8)
- return -EINVAL;
-
- /* tabula rasa */
- s->hopp_len = 0;
-
- /* generating list of all frequencies (1..1023,0) */
- for (i = 1; i <= 1024; i++) {
- if ((s->freq[i & 1023] & FREQ_TYPE_SERV)) {
- f[j++] = i & 1023;
- if (j == (len << 3))
- break;
- }
- }
-
- /* fill hopping table with frequency index given by IE */
- for (i = 0, i < (len << 3), i++) {
- /* if bit is set, this frequency index is used for hopping */
- if ((ma[len - 1 - (i >> 3)] & (1 << (i & 7)))) {
- /* index higher than entries in list ? */
- if (i >= j) {
- DEBUGP(DRR, "Mobile Allocation hopping index "
- "%d exceeds maximum number of cell "
- "frequencies. (%d)\n", i + 1, j);
- break;
- }
- hopping[s->hopp_len++] = f[i];
- }
- }
-
- return 0;
-}
-
-/* Rach Control decode tables */
-static uint8_t gsm48_max_retrans[4] = {
- 1, 2, 4, 7
-}
-static uint8_t gsm48_tx_integer[16] = {
- 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 20, 25, 32, 50
-}
-
-/* decode "RACH Control Parameter" (10.5.2.29) */
-static int gsm48_decode_rach_ctl_param(struct gsm48_sysinfo *s, struct gsm48_rach_ctl *rc)
-{
- int i;
-
- s->reest_denied = rc->re;
- s->cell_barred = rc->cell_barr;
- s->tx_integer = gsm48_tx_integer[rc->tx_int];
- s->max_retrans = gsm48_max_retrans[rc->max_retr];
- for (i = 0, i <= 15, i++)
- if ((rc->ac[1 - (i >> 3)] & (1 << (i & 7))))
- s->class_barr[i] = 1;
- else
- s->class_barr[i] = 0;
-
- return 0;
-}
-static int gsm48_decode_rach_ctl_neigh(struct gsm48_sysinfo *s, struct gsm48_rach_ctl *rc)
-{
- int i;
-
- s->nb_reest_denied = rc->re;
- s->nb_cell_barred = rc->cell_barr;
- s->nb_tx_integer = gsm48_tx_integer[rc->tx_int];
- s->nb_max_retrans = gsm48_max_retrans[rc->max_retr];
- for (i = 0, i <= 15, i++)
- if ((rc->ac[1 - (i >> 3)] & (1 << (i & 7))))
- s->nb_class_barr[i] = 1;
- else
- s->nb_class_barr[i] = 0;
-
- return 0;
-}
-
-/* decode "SI 1 Rest Octets" (10.5.2.32) */
-static int gsm48_decode_si1_rest(struct gsm48_sysinfo *s, uint8_t *si, uint8_t len)
-{
-}
-
-/* decode "SI 3 Rest Octets" (10.5.2.34) */
-static int gsm48_decode_si3_rest(struct gsm48_sysinfo *s, uint8_t *si, uint8_t len)
-{
-}
-
-/* decode "SI 4 Rest Octets" (10.5.2.35) */
-static int gsm48_decode_si4_rest(struct gsm48_sysinfo *s, uint8_t *si, uint8_t len)
-{
-}
-
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 1" message (9.1.31) */
-static int gsm_rr_rx_sysinfo1(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_1 *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 1 message.\n");
- return -EINVAL;
- }
- /* Cell Channel Description */
- gsm48_decode_freq_list(s->freq, si->cell_channel_description,
- sizeof(si->cell_channel_description), 0xce, FREQ_TYPE_SERV);
- /* RACH Control Parameter */
- gsm48_decode_rach_ctl_param(s, si->rach_control);
- /* SI 1 Rest Octets */
- if (payload_len)
- gsm48_decode_si1_rest(si->rest_octets, payload_len);
-
- return 0;
-}
-
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 2" message (9.1.32) */
-static int gsm_rr_rx_sysinfo2(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_2 *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 2 message.\n");
- return -EINVAL;
- }
- /* Neighbor Cell Description */
- gsm48_decode_freq_list(s->freq, si->bcch_frequency_list,
- sizeof(si->bcch_frequency_list), 0xce, FREQ_TYPE_NCELL_2);
- /* NCC Permitted */
- s->nb_ncc_permitted = si->ncc_permitted;
- /* RACH Control Parameter */
- gsm48_decode_rach_ctl_neigh(s, si->rach_control);
-
- return 0;
-}
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 2bis" message (9.1.33) */
-static int gsm_rr_rx_sysinfo2bis(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_2bis *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 2bis message.\n");
- return -EINVAL;
- }
- /* Neighbor Cell Description */
- s->nb_ext_ind = (si->bcch_frequency_list[0] >> 6) & 1;
- s->nb_ba_ind = (si->bcch_frequency_list[0] >> 5) & 1;
- gsm48_decode_freq_list(s->freq, si->ext_bcch_frequency_list,
- sizeof(si->ext_bcch_frequency_list), 0x8e, FREQ_TYPE_NCELL_2bis);
- /* RACH Control Parameter */
- gsm48_decode_rach_ctl_neigh(s, si->rach_control);
-
- return 0;
-}
-
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 2ter" message (9.1.34) */
-static int gsm_rr_rx_sysinfo2ter(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_2ter *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 2ter message.\n");
- return -EINVAL;
- }
- /* Neighbor Cell Description 2 */
- s->nb_multi_rep = (si->bcch_frequency_list[0] >> 6) & 3;
- gsm48_decode_freq_list(s->freq, si->ext_bcch_frequency_list,
- sizeof(si->ext_bcch_frequency_list), 0x8e, FREQ_TYPE_NCELL_2ter);
-
- return 0;
-}
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 3" message (9.1.35) */
-static int gsm_rr_rx_sysinfo3(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_3 *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 3 message.\n");
- return -EINVAL;
- }
- /* Cell Identity */
- s->cell_identity = ntohl(si->cell_identity);
- /* LAI */
- gsm48_decode_lai(si->lai, s->mcc, s->mnc, s->lac);
- /* Control Channel Description */
- gsm48_decode_ccd(s, si->control_channel_desc);
- /* Cell Options (BCCH) */
- gsm48_decode_cellopt(s, si->control_channel_desc);
- /* Cell Selection Parameters */
- gsm48_decode_cell_sel_param(s, si->cell_sel_par);
- /* RACH Control Parameter */
- gsm48_decode_rach_ctl_param(s, si->rach_control);
- /* SI 3 Rest Octets */
- if (payload_len >= 4)
- gsm48_decode_si3_rest(si->rest_octets, payload_len);
-
- return 0;
-}
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 4" message (9.1.36) */
-static int gsm_rr_rx_sysinfo4(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_4 *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 4 message.\n");
- return -EINVAL;
- }
- /* LAI */
- gsm48_decode_lai(si->lai, s->mcc, s->mnc, s->lac);
- /* Cell Selection Parameters */
- gsm48_decode_cell_sel_param(s, si->cell_sel_par);
- /* RACH Control Parameter */
- gsm48_decode_rach_ctl_param(s, si->rach_control);
- /* CBCH Channel Description */
- if (payload_len >= 4 && si->data[0] == GSM48_IE_CBCH_CHAN_DES) {
- memcpy(&s->chan_desc, si->data + 1, sizeof(s->chan_desc));
- /* CBCH Mobile Allocation */
- if (payload_len >= 6 && si->data[4] == GSM48_IE_CBCH_MOB_ALLOC
- && payload_len >= 6 + si->data[5])
- gsm48_decode_mobile_alloc(&s, si->data + 6, si->data + 5);
- }
- }
- /* Cell Options (BCCH) */
- gsm48_decode_cellopt(s, si->control_channel_desc);
- /* SI 4 Rest Octets */
- if (payload_len >= 4 + 1 + si->data[5])
- gsm48_decode_si3_rest(si->rest_octets,
- payload_len - 4 - 1 - si->data[5]);
-
- return 0;
-}
-
-todo: frequency list and extension processing: may we delete all frequencies in this category, or just the ones from this special system information?:
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 5" message (9.1.37) */
-static int gsm_rr_rx_sysinfo5(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_5 *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 5 message.\n");
- return -EINVAL;
- }
- /* Neighbor Cell Description */
- gsm48_decode_freq_list(s->freq, si->bcch_frequency_list,
- sizeof(si->bcch_frequency_list), 0xce, FREQ_TYPE_REP_5);
-
- return 0;
-}
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 5bis" message (9.1.38) */
-static int gsm_rr_rx_sysinfo5bis(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_5bis *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 5bis message.\n");
- return -EINVAL;
- }
- /* Neighbor Cell Description */
- gsm48_decode_freq_list(s->freq, si->bcch_frequency_list,
- sizeof(si->bcch_frequency_list), 0xce, FREQ_TYPE_REP_5bis);
-
- return 0;
-}
-
-todo: add to unit data ind switch-case state
-/* receive "SYSTEM INFORMATION 5ter" message (9.1.39) */
-static int gsm_rr_rx_sysinfo5ter(struct osmocom_ms *ms, struct msgb *msg)
-{
- struct gsm48_system_information_type_5ter *si = msgb_l3(msg);
- struct gsm48_sysinfo *s = ms->sysinfo;
- int payload_len = msgb_l3len(msg) - sizeof(*si);
-
- if (payload_len < 0) {
- DEBUGP(DRR, "Short read of SYSTEM INFORMATION 5ter message.\n");
- return -EINVAL;
- }
- /* Neighbor Cell Description */
- gsm48_decode_freq_list(s->freq, si->bcch_frequency_list,
- sizeof(si->bcch_frequency_list), 0xce, FREQ_TYPE_REP_5ter);
-
- return 0;
-}
-
-
@@ -2319,7 +2375,6 @@ static int tlv_copy(void *dest, int dest_len, struct tlv_parsed *tp, uint8_t ie)
return 0;
}
- - flush/send when leaving this state (or completion or if back on old channel)
static int gsm_rr_rx_ass_cmd(struct osmocom_ms *ms, struct msgb *msg)
{
struct gsm_rrlayer *rr = ms->rrlayer;
@@ -2400,21 +2455,46 @@ static int gsm_rr_rx_ass_cmd(struct osmocom_ms *ms, struct msgb *msg)
return 0;
}
- - queue messages during this state
- - flush/send when leaving this state
+/* receiving HANDOVER COMMAND message (9.1.15) */
static int gsm_rr_rx_hando_cmd(struct osmocom_ms *ms, struct msgb *msg)
{
struct gsm_rrlayer *rr = ms->rrlayer;
struct gsm48_hdr *gh = msgb_l3(msg);
- int payload_len = msgb_l3len(msg) - sizeof(*gh);
+ struct gsm48_ho_cmd *ho = (struct gsm48_ho_cmd *)gh->data;
+ int payload_len = msgb_l3len(msg) - sizeof(*gh) - sizeof(*ho);
+ struct tlv_parsed tp;
+ struct gsm_rr_chan_desc cd;
+
+ memset(&cd, 0, sizeof(cd));
+
+ if (payload_len < 0) {
+ DEBUGP(DRR, "Short read of HANDOVER COMMAND message.\n");
+ return gsm_rr_tx_rr_status(ms, GSM48_RR_CAUSE_PROT_ERROR_UNSPC);
+ }
+ tlv_parse(&tp, &rsl_att_tlvdef, ho->data, payload_len, 0, 0);
- parsing
- send dl suspend req
+
+
+
+today: more IE parsing
+
+ /* store current channel descriptions, to return in case of failure */
+ memcpy(&rr->chan_last, &rr->chan_desc, sizeof(*cd));
+ /* copy new description */
+ memcpy(&rr->chan_desc, cd, sizeof(cd));
+
+ /* start suspension of current link */
+ newmsg = gsm48_rr_msgb_alloc();
+ if (!newmsg)
+ return -ENOMEM;
+ rslms_tx_rll_req_l3(ms, RSL_MT_SUSP_REQ, rr->chan_desc.chan_nr, 0, msg);
/* change into special handover suspension state */
rr->hando_susp_state = 1;
rr->resume_last_state = 0;
+
+ return 0;
}
static int gsm_rr_rx_hando_cmd(struct osmocom_ms *ms, struct msgb *msg)
@@ -2428,15 +2508,15 @@ static int gsm_rr_estab_cnf_dedicated(struct osmocom_ms *ms, struct msgb *msg)
if (rr->hando_susp_state || rr->assign_susp_state) {
if (rr->resume_last_state) {
rr->resume_last_state = 0;
- gsm_rr_tx_ass_cpl(ms, cause);
- flush queued radio ressource messages
-
- return 0;
+ gsm_rr_tx_ass_cpl(ms, GSM48_RR_CAUSE_NORMAL);
} else {
gsm_rr_tx_ass_fail(ms, RR_CAUSE_PROTO_ERR_UNSPEC);
- return 0;
}
+ /* transmit queued frames during ho / ass transition */
+ gsm_rr_dequeue_down(ms);
}
+
+ return 0;
}
static int gsm_rr_connect_cnf(struct osmocom_ms *ms, struct msgbl *msg)
@@ -2465,7 +2545,7 @@ static int gsm_rr_rel_cnf_dedicated(struct osmocom_ms *ms, struct msgb *msg)
}
if (rr->hando_susp_state) {
- send HANDOVER ACCESS via DL_RANDOM_ACCESS_REQ
+ gsm_rr_tx_hando_access(ms);
rr->hando_acc_left = 3;
}
return 0;
@@ -2487,7 +2567,11 @@ static int gsm_rr_mdl_error_ind(struct osmocom_ms *ms, struct msgb *msg)
/* change radio to old channel */
tx_ph_dm_est_req(ms, arfcn, rr->chan_desc.chan_desc.chan_nr);
- return 0;
+ /* re-establish old link */
+ newmsg = gsm48_rr_msgb_alloc();
+ if (!newmsg)
+ return -ENOMEM;
+ return rslms_tx_rll_req_l3(ms, RSL_MT_EST_REQ, rr->chan_desc.chan_desc.chan_nr, 0, newmsg);
}
rr->resume_last_state = 0;
}
@@ -2569,6 +2653,21 @@ static void timeout_rr_t3124(void *arg)
{
struct gsm_rrlayer *rr = arg;
+ /* stop sending more access bursts when timer expired */
+ hando_acc_left = 0;
+
+ /* get old channel description */
+ memcpy(&rr->chan_desc, &rr->chan_last, sizeof(*cd));
+
+ /* change radio to old channel */
+ tx_ph_dm_est_req(ms, arfcn, rr->chan_desc.chan_desc.chan_nr);
+
+ /* re-establish old link */
+ msg = gsm48_rr_msgb_alloc();
+ if (!msg)
+ return -ENOMEM;
+ return rslms_tx_rll_req_l3(ms, RSL_MT_EST_REQ, rr->chan_desc.chan_desc.chan_nr, 0, msg);
+
todo
}
@@ -2603,6 +2702,15 @@ todo stop t3122 when cell change
return;
}
+/* send HANDOVER ACCESS burst (9.1.14) */
+static int gsm_rr_tx_hando_access(struct osmocom_ms *ms)
+{
+ newmsg = msgb_alloc_headroom(20, 16, "HAND_ACCESS");
+ if (!newmsg)
+ return -ENOMEM;
+ *msgb_put(newmsg, 1) = rr->hando_ref;
+ return rslms_tx_rll_req_l3(ms, RSL_MT_RAND_ACC_REQ, chan_nr, 0, newmsg);
+}
/* send next channel request in dedicated state */
static int gsm_rr_rand_acc_cnf_dedicated(struct osmocom_ms *ms, struct msgb *msg)
{
@@ -2618,11 +2726,12 @@ static int gsm_rr_rand_acc_cnf_dedicated(struct osmocom_ms *ms, struct msgb *msg
/* send up to four handover access bursts */
if (rr->hando_acc_left) {
rr->hando_acc_left--;
- send HANDOVER ACCESS via DL_RANDOM_ACCESS_REQ;
+ gsm_rr_tx_hando_access(ms);
return;
}
- if (!timer 3124 running) {
+ /* start timer for sending next HANDOVER ACCESS bursts afterwards */
+ if (!timer_pending(&rr->t3124)) {
if (allocated channel is SDCCH)
start_rr_t3124(rr, GSM_T3124_675);
else
@@ -2633,43 +2742,8 @@ static int gsm_rr_rand_acc_cnf_dedicated(struct osmocom_ms *ms, struct msgb *msg
}
rr->n_chan_req--;
- /* table 3.1 */
- switch(ms->si.tx_integer) {
- case 3: case 8: case 14: case 50:
- if (ms->si.bcch_type == GSM_NON_COMBINED_CCCH)
- s = 55;
- else
- s = 41;
- case 4: case 9: case 16:
- if (ms->si.bcch_type == GSM_NON_COMBINED_CCCH)
- s = 76;
- else
- s = 52;
- case 5: case 10: case 20:
- if (ms->si.bcch_type == GSM_NON_COMBINED_CCCH)
- s = 109;
- else
- s = 58;
- case 6: case 11: case 25:
- if (ms->si.bcch_type == GSM_NON_COMBINED_CCCH)
- s = 163;
- else
- s = 86;
- default:
- if (ms->si.bcch_type == GSM_NON_COMBINED_CCCH)
- s = 217;
- else
- s = 115;
+ /* wait for PHYSICAL INFORMATION message or T3124 timeout */
+ return 0;
- /* resend chan_req */
- newmsg = msgb_alloc_headroom(20, 16, "CHAN_REQ");
- if (!newmsg)
- return -ENOMEM;
- *msgb_put(newmsg, 1) = rr->chan_req;
- *msgb_put(newmsg, 1) = (random() % ms->si.tx_integer) + s; /* delay */
- rr->cr_hist[3] = rr->cr_hist[2];
- rr->cr_hist[2] = rr->cr_hist[1];
- rr->cr_hist[1] = chan_req;
- return rslms_tx_rll_req_l3(ms, RSL_MT_RAND_ACC_REQ, chan_nr, 0, newmsg);
}
diff --git a/src/host/gsm48-andreas/issues.txt b/src/host/gsm48-andreas/issues.txt
index d3613f5..e21cc59 100644
--- a/src/host/gsm48-andreas/issues.txt
+++ b/src/host/gsm48-andreas/issues.txt
@@ -23,4 +23,5 @@ send und receive name concept:
OpenBSC: if tx-msg fails during process, the msg must be freed to avoid memory leak.
+system information structures have different headers. why?
diff --git a/src/host/gsm48-andreas/sysinfo.h b/src/host/gsm48-andreas/sysinfo.h
index 110433a..6c7a58f 100644
--- a/src/host/gsm48-andreas/sysinfo.h
+++ b/src/host/gsm48-andreas/sysinfo.h
@@ -23,7 +23,7 @@
/* frequency mask flags of frequency type */
#define FREQ_TYPE_SERV 0x01 /* frequency of the serving cell */
-#define FREQ_TYPE_RESERVED 0x02 /* reserved for channel hopping */
+#define FREQ_TYPE_HOPP 0x02 /* frequency used for channel hopping */
#define FREQ_TYPE_NCELL 0x1c /* frequency of the neighbor cell */
#define FREQ_TYPE_NCELL_2 0x04 /* sub channel of SI 2 */
#define FREQ_TYPE_NCELL_2bis 0x08 /* sub channel of SI 2bis */
@@ -44,8 +44,8 @@ struct gsm_sysinfo_freq {
/* structure of all received system informations */
struct gsm_sysinfo {
- struct gsm_sysinfo_freq freq[1024];
- uint16_t hopping[64];
+ struct gsm_sysinfo_freq freq[1024]; /* all frequencies */
+ uint16_t hopping[64]; /* hopping arfcn */
uint8_t hopp_len;
/* serving cell */