OpenBSC March 2016

openbsc@lists.osmocom.org

15 participants
90 discussions

Authentication Response msg type: 0x14 in spec, 0x94 from a 3G phone
by Neels Hofmeyr 16 Mar '16

16 Mar '16

Hi list, today I saw an MM Authentication Response sent from a 3G UE that mismatches the GSM 04.08 spec. The spec says 0x14, the 3G phone sent 0x94. And wireshark agrees that 0x94 is an Authentication Response. The spec ETSI TS 100 940 V7.21.0 (2003-12) chapter 10.4 defines the MM Authentication Response message type as 8 7 6 5 4 3 2 1 0 x 0 1 - - - - Security messages: 0 1 0 0 AUTHENTICATION RESPONSE So this would be 0x14 or 0x54, depending on the don't-care bit 7. The Osmocom code acts according to spec by applying a bitmask of 0xbf (0b10111111) before comparing to 0x14, caring about bit 8. However, the 3G phone sent an Authentication Response message type of 0x94 (0b10010100) with bit 8 set. Interestingly enough, wireshark interprets this as a 0x14 with the highest two bits as sequence nr. So it seems the reality in the field differs from the spec in that bit 8 should be masked away before comparing to the MM message type code. In consequence, I need to adjust the MM message type bitmask to 0x3f in upcoming patches. The thing is, our code has the apparently wrong 0xbf bitmask hardcoded in numerous places. So as a first step, I will introduce bitmask #defines in libosmocore and apply these in openbsc. I will introduce separate bitmask defines for MM and CC messages, because I'm not sure yet whether CC message types should also be masked with 0x3f in the field and will leave the CC mask as 0xbf for now. While doing that, I also noticed that some places apply a 0xbf bitmask even though the message types in question aren't defined as having any don't-care bit in TS 100 940. I'll adjust those in a separate patch. - So at first, I will replace 0xbf with GSM48_MT_MM_MSG_TYPE_MASK or GSM48_MT_CC_MSG_TYPE_MASK. - Then I'll adjust the MM mask to 0x3f to allow testing 3G auth. - Finally I'll remove bit masks where they shouldn't be applicable, which could use a second opinion by you guys. Are the upper bits always some sequence number, and the spec simply doesn't reflect the field? The patch submissions will follow right up... ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Holger Freyther, Harald Welte

2 5

[PATCH] Add function to add bits from array to bitvec
by msuraev＠sysmocom.de 16 Mar '16

16 Mar '16

From: Max <msuraev(a)sysmocom.de> Add function which adds specified number of bits from each element of array to the bit vector prefixing each addition with one and finishing entire sequence with adding 0. This is very common patter for various repetitive data structures described with CSN.1 in 3GPP standards. Corresponding test vectors and doxygen headers are added too. --- include/osmocom/core/bitvec.h | 3 +++ src/bitvec.c | 40 ++++++++++++++++++++++++++++++++++++++++ tests/bitvec/bitvec_test.c | 43 +++++++++++++++++++++++++++++++++++++++++++ tests/bitvec/bitvec_test.ok | 33 +++++++++++++++++++++++++++++++++ 4 files changed, 119 insertions(+) diff --git a/include/osmocom/core/bitvec.h b/include/osmocom/core/bitvec.h index 5314cf2..a49d178 100644 --- a/include/osmocom/core/bitvec.h +++ b/include/osmocom/core/bitvec.h @@ -91,5 +91,8 @@ void bitvec_zero(struct bitvec *bv); unsigned bitvec_rl(const struct bitvec *bv, bool b); void bitvec_shiftl(struct bitvec *bv, unsigned int n); int16_t bitvec_get_int16_msb(const struct bitvec *bv, unsigned int num_bits); +unsigned int bitvec_add_array(struct bitvec *bv, const uint32_t *array, + unsigned int array_len, bool estimate, + unsigned int num_bits); /*! @} */ diff --git a/src/bitvec.c b/src/bitvec.c index 00ae150..7cd2f06 100644 --- a/src/bitvec.c +++ b/src/bitvec.c @@ -570,4 +570,44 @@ void bitvec_shiftl(struct bitvec *bv, unsigned n) bv->cur_bit -= n; } +/*! \brief Add given array to bitvec + * \param[in,out] bv bit vector to work with + * \param[in] array elements to be added + * \param[in] array_len length of array + * \param[in] estimate indicates whether to return number of bits required + * instead of actually changing bv + * \param[in] num_bits number of bits to consider in each element of array + * \returns number of bits necessary to add given PCIDs if estimate is true, + * 0 otherwise + * + * N. B: no length checks are performed on bv - it's callee's job to ensure + * enough space is available - for example by calling with estimate = true first. + * + * Useful for common pattern in CSN.1 spec which looks like: + * { 1 < XXX : bit (num_bits) > } ** 0 + * which means repeat any times (between 0 and infinity), + * start each repetition with 1, mark end of repetitions with 0 bit + * see app. note in 3GPP TS 24.007 § B.2.1 Rule A2 + */ +unsigned int bitvec_add_array(struct bitvec *bv, const uint32_t *array, + unsigned int array_len, bool estimate, + unsigned int num_bits) +{ + unsigned i, bits = 1; /* account for stop bit */ + for (i = 0; i < array_len; i++) { + if (estimate) { + bits += (1 + num_bits); + } else { + bitvec_set_bit(bv, 1); + bitvec_set_uint(bv, array[i], num_bits); + } + } + + if (estimate) + return bits; + + bitvec_set_bit(bv, 0); /* stop bit - end of the sequence */ + return 0; +} + /*! @} */ diff --git a/tests/bitvec/bitvec_test.c b/tests/bitvec/bitvec_test.c index 76d6773..a98a91c 100644 --- a/tests/bitvec/bitvec_test.c +++ b/tests/bitvec/bitvec_test.c @@ -132,6 +132,43 @@ static void test_unhex(const char *hex) printf("%s\n", hex); } +static inline void test_array_item(unsigned t, struct bitvec *b, unsigned int n, + uint32_t *array, unsigned int p) +{ + unsigned int i, x, y; + bitvec_zero(b); + x = b->cur_bit; + i = bitvec_add_array(b, array, n, true, t); + y = b->cur_bit; + bitvec_add_array(b, array, n, false, t); + printf("\nbits: %u, est: %u, real: %u, x: %u, y: %u\n", + t, i, b->cur_bit, x, y); + for (i = 0; i < p; i++) { + printf(OSMO_BIT_SPEC " ", OSMO_BIT_PRINT(b->data[i])); + if (0 == (i + 1) % 15) + printf("\n"); + } +} + +static void test_array() +{ + struct bitvec b; + uint8_t d[4096]; + b.data = d; + b.data_len = sizeof(d); + + unsigned int i, n = 64; + uint32_t array[n]; + for (i = 0; i < n; i++) { + array[i] = i * i * i + i; + printf("0x%x ", array[i]); + } + + test_array_item(3, &b, n, array, n); + test_array_item(9, &b, n, array, n * 2); + test_array_item(17, &b, n, array, n * 3); +} + int main(int argc, char **argv) { struct bitvec bv; @@ -204,5 +241,11 @@ int main(int argc, char **argv) test_unhex("DEADFACE000000000000000000000000000000BEEFFEED"); test_unhex("FFFFFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"); + printf("arrr...\n"); + + test_array(); + + printf("\nbitvec ok.\n"); + return 0; } diff --git a/tests/bitvec/bitvec_test.ok b/tests/bitvec/bitvec_test.ok index 1c993d3..e256108 100644 --- a/tests/bitvec/bitvec_test.ok +++ b/tests/bitvec/bitvec_test.ok @@ -134,3 +134,36 @@ DEADFACE000000000000000000000000000000BEEFFEED 0 -=> cur_bit=512 fffffaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa FFFFFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB +arrr... +0x0 0x2 0xa 0x1e 0x44 0x82 0xde 0x15e 0x208 0x2e2 0x3f2 0x53e 0x6cc 0x8a2 0xac6 0xd3e 0x1010 0x1342 0x16da 0x1ade 0x1f54 0x2442 0x29ae 0x2f9e 0x3618 0x3d22 0x44c2 0x4cfe 0x55dc 0x5f62 0x6996 0x747e 0x8020 0x8c82 0x99aa 0xa79e 0xb664 0xc602 0xd67e 0xe7de 0xfa28 0x10d62 0x12192 0x136be 0x14cec 0x16422 0x17c66 0x195be 0x1b030 0x1cbc2 0x1e87a 0x2065e 0x22574 0x245c2 0x2674e 0x28a1e 0x2ae38 0x2d3a2 0x2fa62 0x3227e 0x34bfc 0x376e2 0x3a336 0x3d0fe +bits: 3, est: 257, real: 257, x: 0, y: 0 +1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. +111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. +11..1.1. 111.111. ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ +bits: 9, est: 641, real: 641, x: 0, y: 0 +1....... ..1..... ..1.1... ..1.1.1. ...1111. 1..1...1 ..1.1... ..1.1.11 .1111.11 .1.1111. 1.....1. ..1.111. ..1.1111 11..1.11 ..11111. +1.11..11 ..1.1.1. ..1.1.11 ...11.11 ..11111. 1....1.. ..11.1.. ..1.1.11 .11.1.1. 11.1111. 11.1.1.1 ..1..1.. ..1.111. 1.111.11 1..1111. +1....11. ..11..1. ..1.1.11 ....1.1. 1111111. 1111.111 ..11.11. ..1.111. .1.11.1. .111111. 1...1... ..1.1... ..1.111. 1.1.1.11 1..1111. +1..11..1 ..1..... ..1.1..1 11111.11 11.1111. 1...1.1. ..11.11. ..1.111. .1..1.1. 1.11111. 1.111.11 ..1...1. ..1.1..1 1..11.11 1.11111. +1...11.. ..1111.. ..1.1..1 111.1.1. .1.1111. 11.111.1 ..1111.. ..1.11.1 ..111.1. ...1111. 1...111. ..111.1. ..1.1..1 1...1.1. .111111. +11111111 ..1.111. ..1.11.. 11.11.1. 1111111. ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ +bits: 17, est: 1153, real: 1153, x: 0, y: 0 +1....... ........ ..1..... ........ ..1.1... ........ ..1.1.1. ........ ...1111. 1....... ...1...1 ..1..... ....1... ..1.1... ......11 +.1111.1. .......1 .1.1111. 1....... 1.....1. ..1..... ..1.111. ..1.1... ....1111 11..1.1. .....1.1 ..11111. 1......1 1.11..11 ..1..... +1...1.1. ..1.1... ..1.1.11 ...11.1. ....11.1 ..11111. 1....1.. .....1.. ..1....1 ..11.1.. ..1.1... .1.11.11 .11.1.1. ...11.1. 11.1111. +1....111 11.1.1.1 ..1...1. .1...1.. ..1.1... 1.1..11. 1.111.1. ..1.1111 1..1111. 1...11.1 1....11. ..1...11 11.1..1. ..1.1..1 ...1..11 +....1.1. .1..11.. 1111111. 1..1.1.1 .111.111 ..1..1.1 1111.11. ..1.1..1 1.1..11. .1.11.1. .111.1.. .111111. 1.1..... ....1... ..1.1... +11..1... ..1.1.1. .11..11. 1.1.1.1. 1.1..111 1..1111. 1.1.11.1 1..11..1 ..1.11.. .11..... ..1.1.11 .1.11..1 11111.1. 111..111 11.1111. +1.11111. 1...1.1. ..11.... 11.1.11. ..1.11.. 1....11. .1..1.11 ..11.11. 1.11111. 11.1..11 ..111.11 ..11.11. .1....1. ..1.11.1 1111...1 +1..11.11 1..1.1.1 1.11111. 111.11.. ....11.. ..1111.. 1.1111.. ..1.1111 1.1....1 111.1.1. .....11. .1.1111. 1...1..1 .1.111.1 ..1..1.. +.1.111.. ..1.1..1 1..111.1 ..111.1. 1...1.1. ...1111. 1.1.1.11 1...111. ..1.11.1 ..111.1. ..1.1.11 111.1..1 1...1.11 ..1...1. .111111. +11.1..1. 11111111 ..11.111 .11.111. ..1.111. 1...11.. 11.11.11 11.1.... 1111111. ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +bitvec ok. -- 2.7.3

3 2

Support of AoverIP (AOIP) in osmo-bsc
by Bindhu Anjaneya 16 Mar '16

16 Mar '16

Hello All, We are planning to implement A-Interface Over IP 3GPP Release8 compliant(3GPP TS 43.903 V8.3.0, 3GPP TS 48.006 v8.0.0) in osmo-bsc (bsc only mode). We will be communicating further on the design approach. Request you all to provide your inputs and suggestions. Regards, Bindhu

3 8

[PATCH 1/2] Improve BSSGP debug output
by msuraev＠sysmocom.de 15 Mar '16

15 Mar '16

From: Max <msuraev(a)sysmocom.de> Print string representation of Cause IE and PDU type in addition to numerical value. --- src/gb/gprs_bssgp.c | 28 ++++++++++++++-------------- src/gb/gprs_bssgp_bss.c | 6 +++--- 2 files changed, 17 insertions(+), 17 deletions(-) diff --git a/src/gb/gprs_bssgp.c b/src/gb/gprs_bssgp.c index e3e69c9..e724d00 100644 --- a/src/gb/gprs_bssgp.c +++ b/src/gb/gprs_bssgp.c @@ -896,8 +896,8 @@ static int bssgp_rx_ptp(struct msgb *msg, struct tlv_parsed *tp, case BSSGP_PDUT_CREATE_BSS_PFC_NACK: case BSSGP_PDUT_MODIFY_BSS_PFC: case BSSGP_PDUT_DELETE_BSS_PFC_ACK: - DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type 0x%02x not [yet] " - "implemented\n", bctx->bvci, pdu_type); + DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type %s not [yet] " + "implemented\n", bctx->bvci, bssgp_pdu_str(pdu_type)); rc = bssgp_tx_status(BSSGP_CAUSE_PDU_INCOMP_FEAT, NULL, msg); break; /* those only exist in the SGSN -> BSS direction */ @@ -907,14 +907,14 @@ static int bssgp_rx_ptp(struct msgb *msg, struct tlv_parsed *tp, case BSSGP_PDUT_RA_CAPA_UPDATE_ACK: case BSSGP_PDUT_FLOW_CONTROL_BVC_ACK: case BSSGP_PDUT_FLOW_CONTROL_MS_ACK: - DEBUGP(DBSSGP, "BSSGP BVCI=%u PDU type 0x%02x only exists " - "in DL\n", bctx->bvci, pdu_type); + DEBUGP(DBSSGP, "BSSGP BVCI=%u PDU type 0x%02x (%s) only exists " + "in DL\n", bctx->bvci, pdu_type, bssgp_pdu_str(pdu_type)); bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); rc = -EINVAL; break; default: - DEBUGP(DBSSGP, "BSSGP BVCI=%u PDU type 0x%02x unknown\n", - bctx->bvci, pdu_type); + DEBUGP(DBSSGP, "BSSGP BVCI=%u PDU type 0x%02x (%s) unknown\n", + bctx->bvci, pdu_type, bssgp_pdu_str(pdu_type)); rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); break; } @@ -999,14 +999,14 @@ static int bssgp_rx_sign(struct msgb *msg, struct tlv_parsed *tp, case BSSGP_PDUT_BVC_BLOCK_ACK: case BSSGP_PDUT_BVC_UNBLOCK_ACK: case BSSGP_PDUT_SGSN_INVOKE_TRACE: - DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type 0x%02x only exists " - "in DL\n", bvci, pdu_type); + DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type 0x%02x (%s) only exists " + "in DL\n", bvci, pdu_type, bssgp_pdu_str(pdu_type)); bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); rc = -EINVAL; break; default: - DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type 0x%02x unknown\n", - bvci, pdu_type); + DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type 0x%02x (%s) unknown\n", + bvci, pdu_type, bssgp_pdu_str(pdu_type)); rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); break; } @@ -1066,8 +1066,8 @@ int bssgp_rcvmsg(struct msgb *msg) if (!bctx && bvci != BVCI_SIGNALLING && pdu_type != BSSGP_PDUT_BVC_RESET) { LOGP(DBSSGP, LOGL_NOTICE, "NSEI=%u/BVCI=%u Rejecting PDU " - "type %u for unknown BVCI\n", msgb_nsei(msg), bvci, - pdu_type); + "type %u (%s) for unknown BVCI\n", msgb_nsei(msg), bvci, + pdu_type, bssgp_pdu_str(pdu_type)); return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, &bvci, msg); } @@ -1079,9 +1079,9 @@ int bssgp_rcvmsg(struct msgb *msg) rc = bssgp_rx_ptp(msg, &tp, bctx); else LOGP(DBSSGP, LOGL_NOTICE, - "NSEI=%u/BVCI=%u Cannot handle PDU type %u for " + "NSEI=%u/BVCI=%u Cannot handle PDU type %u (%s) for " "unknown BVCI, NS BVCI %u\n", - msgb_nsei(msg), bvci, pdu_type, ns_bvci); + msgb_nsei(msg), bvci, pdu_type, bssgp_pdu_str(pdu_type), ns_bvci); return rc; } diff --git a/src/gb/gprs_bssgp_bss.c b/src/gb/gprs_bssgp_bss.c index 3a9012e..955e2b4 100644 --- a/src/gb/gprs_bssgp_bss.c +++ b/src/gb/gprs_bssgp_bss.c @@ -135,7 +135,7 @@ static struct msgb *common_tx_radio_status(struct bssgp_bvc_ctx *bctx) static int common_tx_radio_status2(struct msgb *msg, uint8_t cause) { msgb_tvlv_put(msg, BSSGP_IE_CAUSE, 1, &cause); - LOGPC(DBSSGP, LOGL_NOTICE, "CAUSE=%u\n", cause); + LOGPC(DBSSGP, LOGL_NOTICE, "CAUSE=%u (%s)\n", cause, bssgp_cause_str(cause)); return gprs_ns_sendmsg(bssgp_nsi, msg); } @@ -247,7 +247,7 @@ int bssgp_tx_bvc_block(struct bssgp_bvc_ctx *bctx, uint8_t cause) uint16_t _bvci = htons(bctx->bvci); LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=%u) Tx BVC-BLOCK " - "CAUSE=%u\n", bctx->bvci, cause); + "CAUSE=%u (%s)\n", bctx->bvci, cause, bssgp_cause_str(cause)); msgb_nsei(msg) = bctx->nsei; msgb_bvci(msg) = 0; /* Signalling */ @@ -287,7 +287,7 @@ int bssgp_tx_bvc_reset(struct bssgp_bvc_ctx *bctx, uint16_t bvci, uint8_t cause) uint16_t _bvci = htons(bvci); LOGP(DBSSGP, LOGL_NOTICE, "BSSGP (BVCI=%u) Tx BVC-RESET " - "CAUSE=%u\n", bvci, cause); + "CAUSE=%u (%s)\n", bvci, cause, bssgp_cause_str(cause)); msgb_nsei(msg) = bctx->nsei; msgb_bvci(msg) = 0; /* Signalling */ -- 2.7.3

4 4

[PATCH] Add function to add bits from array to bitvec
by msuraev＠sysmocom.de 14 Mar '16

14 Mar '16

From: Max <msuraev(a)sysmocom.de> Add function which adds specified number of bits from each element of array to the bit vector prefixing each addition with one and finishing entire sequence with adding 0. This is very common patter for various repetitive data structures described with CSN.1 in 3GPP standards. Corresponding test vectors and doxygen headers are added too. --- include/osmocom/core/bitvec.h | 2 ++ src/bitvec.c | 37 +++++++++++++++++++++++++++++++++++++ tests/bitvec/bitvec_test.c | 41 +++++++++++++++++++++++++++++++++++++++++ tests/bitvec/bitvec_test.ok | 33 +++++++++++++++++++++++++++++++++ 4 files changed, 113 insertions(+) diff --git a/include/osmocom/core/bitvec.h b/include/osmocom/core/bitvec.h index 5314cf2..623f9b4 100644 --- a/include/osmocom/core/bitvec.h +++ b/include/osmocom/core/bitvec.h @@ -91,5 +91,7 @@ void bitvec_zero(struct bitvec *bv); unsigned bitvec_rl(const struct bitvec *bv, bool b); void bitvec_shiftl(struct bitvec *bv, unsigned int n); int16_t bitvec_get_int16_msb(const struct bitvec *bv, unsigned int num_bits); +unsigned int bitvec_add_array(struct bitvec *bv, const uint32_t *array, unsigned int array_len, + bool estimate, unsigned int num_bits); /*! @} */ diff --git a/src/bitvec.c b/src/bitvec.c index 00ae150..f212043 100644 --- a/src/bitvec.c +++ b/src/bitvec.c @@ -570,4 +570,41 @@ void bitvec_shiftl(struct bitvec *bv, unsigned n) bv->cur_bit -= n; } +/*! \brief Add given array to bitvec + * \param[in,out] bv bit vector to work with + * \param[in] array elements to be added + * \param[in] array_len length of array + * \param[in] estimate indicates whether to return number of bits required instead of actually changing bv + * \param[in] num_bits number of bits to consider in each element of array + * \returns number of bits necessary to add given PCIDs if estimate is true, 0 otherwise + * + * N. B: no length checks are performed on bv - it's callee's job to ensure + * enough space is available - for example by calling with estimate == true first. + * + * Useful for common pattern in CSN.1 spec which looks like: + * { 1 < XXX : bit (num_bits) > } ** 0 + * which means repeat any times (between 0 and infinity), + * start each repetition with 1, mark end of repetitions with 0 bit + * see app. note in 3GPP TS 24.007 § B.2.1 Rule A2 + */ +unsigned int bitvec_add_array(struct bitvec *bv, const uint32_t *array, unsigned int array_len, + bool estimate, unsigned int num_bits) +{ + unsigned i, bits = 1; /* account for stop bit */ + for (i = 0; i < array_len; i++) { + if (estimate) { + bits += (1 + num_bits); + } else { + bitvec_set_bit(bv, 1); + bitvec_set_uint(bv, array[i], num_bits); + } + } + + if (estimate) + return bits; + + bitvec_set_bit(bv, 0); /* stop bit - end of the sequence */ + return 0; +} + /*! @} */ diff --git a/tests/bitvec/bitvec_test.c b/tests/bitvec/bitvec_test.c index 76d6773..a0cae73 100644 --- a/tests/bitvec/bitvec_test.c +++ b/tests/bitvec/bitvec_test.c @@ -132,6 +132,41 @@ static void test_unhex(const char *hex) printf("%s\n", hex); } +static inline void test_array_item(unsigned t, struct bitvec *b, unsigned int n, uint32_t *array, unsigned int p) +{ + unsigned int i, x, y; + bitvec_zero(b); + x = b->cur_bit; + i = bitvec_add_array(b, array, n, true, t); + y = b->cur_bit; + bitvec_add_array(b, array, n, false, t); + printf("\nbits: %u, est: %u, real: %u, x: %u, y: %u\n", t, i, b->cur_bit, x, y); + for (i = 0; i < p; i++) { + printf(OSMO_BIT_SPEC " ", OSMO_BIT_PRINT(b->data[i])); + if (0 == (i + 1) % 15) + printf("\n"); + } +} + +static void test_array() +{ + struct bitvec b; + uint8_t d[4096]; + b.data = d; + b.data_len = sizeof(d); + + unsigned int i, n = 64; + uint32_t array[n]; + for (i = 0; i < n; i++) { + array[i] = i * i * i + i; + printf("0x%x ", array[i]); + } + + test_array_item(3, &b, n, array, n); + test_array_item(9, &b, n, array, n * 2); + test_array_item(17, &b, n, array, n * 3); +} + int main(int argc, char **argv) { struct bitvec bv; @@ -204,5 +239,11 @@ int main(int argc, char **argv) test_unhex("DEADFACE000000000000000000000000000000BEEFFEED"); test_unhex("FFFFFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"); + printf("arrr...\n"); + + test_array(); + + printf("\nbitvec ok.\n"); + return 0; } diff --git a/tests/bitvec/bitvec_test.ok b/tests/bitvec/bitvec_test.ok index 1c993d3..e256108 100644 --- a/tests/bitvec/bitvec_test.ok +++ b/tests/bitvec/bitvec_test.ok @@ -134,3 +134,36 @@ DEADFACE000000000000000000000000000000BEEFFEED 0 -=> cur_bit=512 fffffaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa FFFFFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB +arrr... +0x0 0x2 0xa 0x1e 0x44 0x82 0xde 0x15e 0x208 0x2e2 0x3f2 0x53e 0x6cc 0x8a2 0xac6 0xd3e 0x1010 0x1342 0x16da 0x1ade 0x1f54 0x2442 0x29ae 0x2f9e 0x3618 0x3d22 0x44c2 0x4cfe 0x55dc 0x5f62 0x6996 0x747e 0x8020 0x8c82 0x99aa 0xa79e 0xb664 0xc602 0xd67e 0xe7de 0xfa28 0x10d62 0x12192 0x136be 0x14cec 0x16422 0x17c66 0x195be 0x1b030 0x1cbc2 0x1e87a 0x2065e 0x22574 0x245c2 0x2674e 0x28a1e 0x2ae38 0x2d3a2 0x2fa62 0x3227e 0x34bfc 0x376e2 0x3a336 0x3d0fe +bits: 3, est: 257, real: 257, x: 0, y: 0 +1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. +111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. 11..1.1. 111.111. 1...1.1. 1.1.111. +11..1.1. 111.111. ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ +bits: 9, est: 641, real: 641, x: 0, y: 0 +1....... ..1..... ..1.1... ..1.1.1. ...1111. 1..1...1 ..1.1... ..1.1.11 .1111.11 .1.1111. 1.....1. ..1.111. ..1.1111 11..1.11 ..11111. +1.11..11 ..1.1.1. ..1.1.11 ...11.11 ..11111. 1....1.. ..11.1.. ..1.1.11 .11.1.1. 11.1111. 11.1.1.1 ..1..1.. ..1.111. 1.111.11 1..1111. +1....11. ..11..1. ..1.1.11 ....1.1. 1111111. 1111.111 ..11.11. ..1.111. .1.11.1. .111111. 1...1... ..1.1... ..1.111. 1.1.1.11 1..1111. +1..11..1 ..1..... ..1.1..1 11111.11 11.1111. 1...1.1. ..11.11. ..1.111. .1..1.1. 1.11111. 1.111.11 ..1...1. ..1.1..1 1..11.11 1.11111. +1...11.. ..1111.. ..1.1..1 111.1.1. .1.1111. 11.111.1 ..1111.. ..1.11.1 ..111.1. ...1111. 1...111. ..111.1. ..1.1..1 1...1.1. .111111. +11111111 ..1.111. ..1.11.. 11.11.1. 1111111. ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ +bits: 17, est: 1153, real: 1153, x: 0, y: 0 +1....... ........ ..1..... ........ ..1.1... ........ ..1.1.1. ........ ...1111. 1....... ...1...1 ..1..... ....1... ..1.1... ......11 +.1111.1. .......1 .1.1111. 1....... 1.....1. ..1..... ..1.111. ..1.1... ....1111 11..1.1. .....1.1 ..11111. 1......1 1.11..11 ..1..... +1...1.1. ..1.1... ..1.1.11 ...11.1. ....11.1 ..11111. 1....1.. .....1.. ..1....1 ..11.1.. ..1.1... .1.11.11 .11.1.1. ...11.1. 11.1111. +1....111 11.1.1.1 ..1...1. .1...1.. ..1.1... 1.1..11. 1.111.1. ..1.1111 1..1111. 1...11.1 1....11. ..1...11 11.1..1. ..1.1..1 ...1..11 +....1.1. .1..11.. 1111111. 1..1.1.1 .111.111 ..1..1.1 1111.11. ..1.1..1 1.1..11. .1.11.1. .111.1.. .111111. 1.1..... ....1... ..1.1... +11..1... ..1.1.1. .11..11. 1.1.1.1. 1.1..111 1..1111. 1.1.11.1 1..11..1 ..1.11.. .11..... ..1.1.11 .1.11..1 11111.1. 111..111 11.1111. +1.11111. 1...1.1. ..11.... 11.1.11. ..1.11.. 1....11. .1..1.11 ..11.11. 1.11111. 11.1..11 ..111.11 ..11.11. .1....1. ..1.11.1 1111...1 +1..11.11 1..1.1.1 1.11111. 111.11.. ....11.. ..1111.. 1.1111.. ..1.1111 1.1....1 111.1.1. .....11. .1.1111. 1...1..1 .1.111.1 ..1..1.. +.1.111.. ..1.1..1 1..111.1 ..111.1. 1...1.1. ...1111. 1.1.1.11 1...111. ..1.11.1 ..111.1. ..1.1.11 111.1..1 1...1.11 ..1...1. .111111. +11.1..1. 11111111 ..11.111 .11.111. ..1.111. 1...11.. 11.11.11 11.1.... 1111111. ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ ........ +bitvec ok. -- 2.7.3

2 1

[PATCH 1/3] mgcp: Move the transcoding routines into a struct
by Holger Hans Peter Freyther 14 Mar '16

14 Mar '16

From: Holger Hans Peter Freyther <holger(a)moiji-mobile.com> We will have the NOOP implementation (e.g. used by the NAT), the SW implementation (using software codecs), a HW assisted one that will use a DSP to do transcoding and in theory the RTP based one (but I will remove that code). --- openbsc/include/openbsc/mgcp.h | 14 ++++++------- openbsc/include/openbsc/mgcp_internal.h | 15 ++++++++++++-- openbsc/include/openbsc/mgcp_transcode.h | 2 ++ openbsc/src/libmgcp/mgcp_network.c | 3 ++- openbsc/src/libmgcp/mgcp_protocol.c | 33 ++++++++++++++++++------------ openbsc/src/libmgcp/mgcp_transcode.c | 12 ++++++++--- openbsc/src/osmo-bsc_mgcp/mgcp_main.c | 10 ++++----- openbsc/tests/mgcp/mgcp_transcoding_test.c | 11 ++++++---- 8 files changed, 63 insertions(+), 37 deletions(-) diff --git a/openbsc/include/openbsc/mgcp.h b/openbsc/include/openbsc/mgcp.h index b2262bc..a216547 100644 --- a/openbsc/include/openbsc/mgcp.h +++ b/openbsc/include/openbsc/mgcp.h @@ -1,8 +1,8 @@ /* A Media Gateway Control Protocol Media Gateway: RFC 3435 */ /* - * (C) 2009-2012 by Holger Hans Peter Freyther <zecke(a)selfish.org> - * (C) 2009-2012 by On-Waves + * (C) 2009-2016 by Holger Hans Peter Freyther <zecke(a)selfish.org> + * (C) 2009-2016 by On-Waves * All Rights Reserved * * This program is free software; you can redistribute it and/or modify @@ -69,6 +69,7 @@ struct mgcp_endpoint; struct mgcp_config; struct mgcp_trunk_config; struct mgcp_rtp_end; +struct mgcp_transcoding; #define MGCP_ENDP_CRCX 1 #define MGCP_ENDP_DLCX 2 @@ -158,6 +159,9 @@ struct mgcp_trunk_config { /* spec handling */ int force_realloc; + /* transcoding */ + const struct mgcp_transcoding *transcoder; + /* timer */ struct osmo_timer_list keepalive_timer; @@ -184,12 +188,6 @@ struct mgcp_config { struct in_addr transcoder_in; int transcoder_remote_base; - /* RTP processing */ - mgcp_processing rtp_processing_cb; - mgcp_processing_setup setup_rtp_processing_cb; - - mgcp_get_format get_net_downlink_format_cb; - struct osmo_wqueue gw_fd; struct mgcp_port_range bts_ports; diff --git a/openbsc/include/openbsc/mgcp_internal.h b/openbsc/include/openbsc/mgcp_internal.h index 7c89d10..a62dbb2 100644 --- a/openbsc/include/openbsc/mgcp_internal.h +++ b/openbsc/include/openbsc/mgcp_internal.h @@ -1,8 +1,8 @@ /* MGCP Private Data */ /* - * (C) 2009-2012 by Holger Hans Peter Freyther <zecke(a)selfish.org> - * (C) 2009-2012 by On-Waves + * (C) 2009-2016 by Holger Hans Peter Freyther <zecke(a)selfish.org> + * (C) 2009-2016 by On-Waves * All Rights Reserved * * This program is free software; you can redistribute it and/or modify @@ -150,6 +150,17 @@ enum mgcp_type { MGCP_OSMUX_BSC_NAT, }; +/** + * Function pointers for RTP processing/transcoding + */ +struct mgcp_transcoding { + mgcp_processing processing_cb; + mgcp_processing_setup setup_processing_cb; + mgcp_get_format get_net_downlink_format_cb; +}; + +extern const struct mgcp_transcoding *mgcp_default_transcoder; + #include <openbsc/osmux.h> struct mgcp_endpoint { diff --git a/openbsc/include/openbsc/mgcp_transcode.h b/openbsc/include/openbsc/mgcp_transcode.h index 147e48b..02b039d 100644 --- a/openbsc/include/openbsc/mgcp_transcode.h +++ b/openbsc/include/openbsc/mgcp_transcode.h @@ -37,6 +37,8 @@ enum audio_format { AF_PCMU }; +struct mgcp_transcoding; +extern const struct mgcp_transcoding mgcp_sw_transcoder; struct mgcp_process_rtp_state { /* decoding */ diff --git a/openbsc/src/libmgcp/mgcp_network.c b/openbsc/src/libmgcp/mgcp_network.c index abce6e4..e4f5f7d 100644 --- a/openbsc/src/libmgcp/mgcp_network.c +++ b/openbsc/src/libmgcp/mgcp_network.c @@ -584,6 +584,7 @@ int mgcp_send(struct mgcp_endpoint *endp, int dest, int is_rtp, struct sockaddr_in *addr, char *buf, int rc) { struct mgcp_trunk_config *tcfg = endp->tcfg; + const struct mgcp_transcoding *trans = tcfg->transcoder; struct mgcp_rtp_end *rtp_end; struct mgcp_rtp_state *rtp_state; int tap_idx; @@ -613,7 +614,7 @@ int mgcp_send(struct mgcp_endpoint *endp, int dest, int is_rtp, int nbytes = 0; int len = rc; do { - cont = endp->cfg->rtp_processing_cb(endp, rtp_end, + cont = trans->processing_cb(endp, rtp_end, buf, &len, RTP_BUF_SIZE); if (cont < 0) break; diff --git a/openbsc/src/libmgcp/mgcp_protocol.c b/openbsc/src/libmgcp/mgcp_protocol.c index 1819cea..8017fe8 100644 --- a/openbsc/src/libmgcp/mgcp_protocol.c +++ b/openbsc/src/libmgcp/mgcp_protocol.c @@ -2,8 +2,8 @@ /* The protocol implementation */ /* - * (C) 2009-2012 by Holger Hans Peter Freyther <zecke(a)selfish.org> - * (C) 2009-2012 by On-Waves + * (C) 2009-2016 by Holger Hans Peter Freyther <zecke(a)selfish.org> + * (C) 2009-2016 by On-Waves * All Rights Reserved * * This program is free software; you can redistribute it and/or modify @@ -66,6 +66,14 @@ static int setup_rtp_processing(struct mgcp_endpoint *endp); static int mgcp_analyze_header(struct mgcp_parse_data *parse, char *data); +static const struct mgcp_transcoding no_transcoder = { + .processing_cb = &mgcp_rtp_processing_default, + .setup_processing_cb = &mgcp_setup_rtp_processing_default, + .get_net_downlink_format_cb = &mgcp_get_net_downlink_format_default, +}; + +const struct mgcp_transcoding *mgcp_default_transcoder = &no_transcoder; + static int mgcp_check_param(const struct mgcp_endpoint *endp, const char *line) { const size_t line_len = strlen(line); @@ -197,13 +205,15 @@ static struct msgb *create_err_response(struct mgcp_endpoint *endp, static int write_response_sdp(struct mgcp_endpoint *endp, char *sdp_record, size_t size, const char *addr) { + const struct mgcp_transcoding *trans; const char *fmtp_extra; const char *audio_name; int payload_type; int len; int nchars; - endp->cfg->get_net_downlink_format_cb(endp, &payload_type, + trans = endp->tcfg->transcoder; + trans->get_net_downlink_format_cb(endp, &payload_type, &audio_name, &fmtp_extra); len = snprintf(sdp_record, size, @@ -1200,12 +1210,8 @@ struct mgcp_config *mgcp_config_alloc(void) cfg->bts_ports.base_port = RTP_PORT_DEFAULT; cfg->net_ports.base_port = RTP_PORT_NET_DEFAULT; - cfg->rtp_processing_cb = &mgcp_rtp_processing_default; - cfg->setup_rtp_processing_cb = &mgcp_setup_rtp_processing_default; - - cfg->get_net_downlink_format_cb = &mgcp_get_net_downlink_format_default; - /* default trunk handling */ + cfg->trunk.transcoder = mgcp_default_transcoder; cfg->trunk.cfg = cfg; cfg->trunk.trunk_nr = 0; cfg->trunk.trunk_type = MGCP_TRUNK_VIRTUAL; @@ -1231,6 +1237,7 @@ struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int nr) return NULL; } + trunk->transcoder = mgcp_default_transcoder; trunk->cfg = cfg; trunk->trunk_type = MGCP_TRUNK_E1; trunk->trunk_nr = nr; @@ -1459,7 +1466,7 @@ int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint) static int setup_rtp_processing(struct mgcp_endpoint *endp) { int rc = 0; - struct mgcp_config *cfg = endp->cfg; + const struct mgcp_transcoding *trans = endp->tcfg->transcoder; if (endp->type != MGCP_RTP_DEFAULT) return 0; @@ -1468,14 +1475,14 @@ static int setup_rtp_processing(struct mgcp_endpoint *endp) return 0; if (endp->conn_mode & MGCP_CONN_SEND_ONLY) - rc |= cfg->setup_rtp_processing_cb(endp, &endp->net_end, &endp->bts_end); + rc |= trans->setup_processing_cb(endp, &endp->net_end, &endp->bts_end); else - rc |= cfg->setup_rtp_processing_cb(endp, &endp->net_end, NULL); + rc |= trans->setup_processing_cb(endp, &endp->net_end, NULL); if (endp->conn_mode & MGCP_CONN_RECV_ONLY) - rc |= cfg->setup_rtp_processing_cb(endp, &endp->bts_end, &endp->net_end); + rc |= trans->setup_processing_cb(endp, &endp->bts_end, &endp->net_end); else - rc |= cfg->setup_rtp_processing_cb(endp, &endp->bts_end, NULL); + rc |= trans->setup_processing_cb(endp, &endp->bts_end, NULL); return rc; } diff --git a/openbsc/src/libmgcp/mgcp_transcode.c b/openbsc/src/libmgcp/mgcp_transcode.c index c994d32..aaa8863 100644 --- a/openbsc/src/libmgcp/mgcp_transcode.c +++ b/openbsc/src/libmgcp/mgcp_transcode.c @@ -32,6 +32,12 @@ #include <osmocom/core/talloc.h> #include <osmocom/netif/rtp.h> +const struct mgcp_transcoding mgcp_sw_transcoder = { + .processing_cb = mgcp_transcoding_process_rtp, + .setup_processing_cb = mgcp_transcoding_setup, + .get_net_downlink_format_cb = mgcp_transcoding_net_downlink_format, +}; + int mgcp_transcoding_get_frame_size(void *state_, int nsamples, int dst) { struct mgcp_process_rtp_state *state = state_; @@ -470,12 +476,12 @@ struct mgcp_process_rtp_state *check_transcode_state( goto done; /* The matching alternate payload type? Then switch */ if (rtp_hdr->payload_type == src_end->alt_codec.payload_type) { - struct mgcp_config *cfg = endp->cfg; + const struct mgcp_transcoding *trans = endp->tcfg->transcoder; struct mgcp_rtp_codec tmp_codec = src_end->alt_codec; src_end->alt_codec = src_end->codec; src_end->codec = tmp_codec; - cfg->setup_rtp_processing_cb(endp, &endp->net_end, &endp->bts_end); - cfg->setup_rtp_processing_cb(endp, &endp->bts_end, &endp->net_end); + trans->setup_processing_cb(endp, &endp->net_end, &endp->bts_end); + trans->setup_processing_cb(endp, &endp->bts_end, &endp->net_end); } done: diff --git a/openbsc/src/osmo-bsc_mgcp/mgcp_main.c b/openbsc/src/osmo-bsc_mgcp/mgcp_main.c index e226b02..3c968be 100644 --- a/openbsc/src/osmo-bsc_mgcp/mgcp_main.c +++ b/openbsc/src/osmo-bsc_mgcp/mgcp_main.c @@ -207,16 +207,14 @@ int main(int argc, char **argv) osmo_init_ignore_signals(); osmo_init_logging(&log_info); +#ifdef BUILD_MGCP_TRANSCODING + mgcp_default_transcoder = &mgcp_sw_transcoder; +#endif + cfg = mgcp_config_alloc(); if (!cfg) return -1; -#ifdef BUILD_MGCP_TRANSCODING - cfg->setup_rtp_processing_cb = &mgcp_transcoding_setup; - cfg->rtp_processing_cb = &mgcp_transcoding_process_rtp; - cfg->get_net_downlink_format_cb = &mgcp_transcoding_net_downlink_format; -#endif - vty_info.copyright = openbsc_copyright; vty_init(&vty_info); logging_vty_add_cmds(&log_info); diff --git a/openbsc/tests/mgcp/mgcp_transcoding_test.c b/openbsc/tests/mgcp/mgcp_transcoding_test.c index c5c0a0b..72c75eb 100644 --- a/openbsc/tests/mgcp/mgcp_transcoding_test.c +++ b/openbsc/tests/mgcp/mgcp_transcoding_test.c @@ -161,6 +161,12 @@ static int audio_name_to_type(const char *name) int mgcp_get_trans_frame_size(void *state_, int nsamples, int dst); +static const struct mgcp_transcoding test_transcoder = { + .setup_processing_cb = mgcp_transcoding_setup, + .processing_cb = mgcp_transcoding_process_rtp, + .get_net_downlink_format_cb = mgcp_transcoding_net_downlink_format, +}; + static int given_configured_endpoint(int in_samples, int out_samples, const char *srcfmt, const char *dstfmt, void **out_ctx, struct mgcp_endpoint **out_endp) @@ -176,10 +182,7 @@ static int given_configured_endpoint(int in_samples, int out_samples, tcfg = talloc_zero(cfg, struct mgcp_trunk_config); endp = talloc_zero(tcfg, struct mgcp_endpoint); - cfg->setup_rtp_processing_cb = mgcp_transcoding_setup; - cfg->rtp_processing_cb = mgcp_transcoding_process_rtp; - cfg->get_net_downlink_format_cb = mgcp_transcoding_net_downlink_format; - + tcfg->transcoder = &test_transcoder; tcfg->endpoints = endp; tcfg->number_endpoints = 1; tcfg->cfg = cfg; -- 2.6.3

1 2

[PATCH] Update configuration examples
by msuraev＠sysmocom.de 14 Mar '16

14 Mar '16

From: Max <msuraev(a)sysmocom.de> Add SysmoBTS-specific example. Remove outdated generic example which is no longer working. --- doc/examples/osmo-bts.cfg | 26 -------------------------- doc/examples/sysmo/osmo-bts-new.cfg | 30 ++++++++++++++++++++++++++++++ 2 files changed, 30 insertions(+), 26 deletions(-) delete mode 100644 doc/examples/osmo-bts.cfg create mode 100644 doc/examples/sysmo/osmo-bts-new.cfg diff --git a/doc/examples/osmo-bts.cfg b/doc/examples/osmo-bts.cfg deleted file mode 100644 index 057a7ff..0000000 --- a/doc/examples/osmo-bts.cfg +++ /dev/null @@ -1,26 +0,0 @@ -! -! OsmoBTS () configuration saved from vty -!! -! -log stderr - logging color 0 - logging timestamp 0 - logging level all everything - logging level rsl info - logging level oml info - logging level rll notice - logging level rr notice - logging level meas notice - logging level pag info - logging level l1c info - logging level l1p info - logging level dsp debug - logging level abis notice -! -line vty - no login -! -bts 0 - band 1800 - ipa unit-id 1234 0 - oml remote-ip 192.168.100.11 diff --git a/doc/examples/sysmo/osmo-bts-new.cfg b/doc/examples/sysmo/osmo-bts-new.cfg new file mode 100644 index 0000000..35142f7 --- /dev/null +++ b/doc/examples/sysmo/osmo-bts-new.cfg @@ -0,0 +1,30 @@ +! +! OsmoBTS () configuration saved from vty +!! +! +log stderr + logging color 1 + logging timestamp 0 + logging level all everything + logging level rsl info + logging level oml info + logging level rll notice + logging level rr notice + logging level meas notice + logging level pag info + logging level l1c info + logging level l1p info + logging level dsp info + logging level abis notice +! +line vty + no login +! +phy 0 + instance 0 +bts 0 + band 1800 + ipa unit-id 666 0 + oml remote-ip 10.1.2.3 + trx 0 + phy 0 instance 0 -- 2.7.2

3 3

[PATCH] bsc_scan_msc_msg: check protocol discriminator
by Neels Hofmeyr 14 Mar '16

14 Mar '16

The function assumed an MM protocol discriminator without verifying it. --- openbsc/src/osmo-bsc/osmo_bsc_filter.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/openbsc/src/osmo-bsc/osmo_bsc_filter.c b/openbsc/src/osmo-bsc/osmo_bsc_filter.c index a71871f..14e0b71 100644 --- a/openbsc/src/osmo-bsc/osmo_bsc_filter.c +++ b/openbsc/src/osmo-bsc/osmo_bsc_filter.c @@ -336,6 +336,7 @@ int bsc_scan_msc_msg(struct gsm_subscriber_connection *conn, struct msgb *msg) struct gsm_network *net; struct gsm48_loc_area_id *lai; struct gsm48_hdr *gh; + uint8_t pdisc; uint8_t mtype; int length = msgb_l3len(msg); @@ -347,6 +348,10 @@ int bsc_scan_msc_msg(struct gsm_subscriber_connection *conn, struct msgb *msg) gh = (struct gsm48_hdr *) msgb_l3(msg); length -= (const char *)&gh->data[0] - (const char *)gh; + pdisc = gsm48_hdr_pdisc(gh); + if (pdisc != GSM48_PDISC_MM) + return 0; + mtype = gsm48_hdr_msg_type(gh); net = conn->bts->network; msc = conn->sccp_con->msc; -- 2.1.4

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[PATCH 0/2] v2 of "GSM 04.08 message types: apply bitmask makros"
by Neels Hofmeyr 14 Mar '16

14 Mar '16

changes to the patch: * use functions, not mask defines (as changed in libosmocore patch). * caught a few more hardcoded bitmasks. * add one log notice in case of unknown message type (see commit log). * previously two commits to apply masks / fix mask usage are combined in one commit that applies the new gsm48_hdr_* functions. * also apply transaction id bitmasks. Neels Hofmeyr (2): 04.08: apply new bitmask functions, fix bitmask use 04.08: apply new transaction id inline functions openbsc/src/gprs/gb_proxy.c | 4 ++-- openbsc/src/gprs/gprs_gb_parse.c | 13 ++++++++++--- openbsc/src/gprs/gprs_gmm.c | 10 +++++----- openbsc/src/libbsc/bsc_api.c | 8 +++++--- openbsc/src/libfilter/bsc_msg_filter.c | 10 +++++----- openbsc/src/libmsc/gsm_04_08.c | 13 ++++++------- openbsc/src/libmsc/gsm_04_11.c | 2 +- openbsc/src/libmsc/silent_call.c | 5 +++-- openbsc/src/osmo-bsc/osmo_bsc_api.c | 8 ++++---- openbsc/src/osmo-bsc/osmo_bsc_filter.c | 10 +++++----- openbsc/src/osmo-bsc_nat/bsc_nat.c | 4 ++-- openbsc/src/osmo-bsc_nat/bsc_nat_rewrite.c | 4 ++-- openbsc/src/osmo-bsc_nat/bsc_ussd.c | 6 +++--- 13 files changed, 53 insertions(+), 44 deletions(-) -- 2.1.4

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[PATCH 0/3] v2 and extension of "Add defines for MM and CC message type bitmasks"
by Neels Hofmeyr 14 Mar '16

14 Mar '16

Changes to the patch set: * Instead of using the bitmask constants, introduce inline functions. * Apply in src/gsm/gsm0480.c. * Also add functions for the transaction ID, encoded in the protocol discriminator octet. Neels Hofmeyr (3): 04.08: add inline funcs for pdisc + msg type bitmasks 04.08: switch to r99 msg type bitmasks by default 04.08: add inline funcs for transaction id bits include/osmocom/gsm/protocol/gsm_04_08.h | 83 ++++++++++++++++++++++++++++++++ src/gsm/gsm0480.c | 4 +- 2 files changed, 85 insertions(+), 2 deletions(-) -- 2.1.4

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