--- /dev/null
+#ifndef _MSGB_H
+#define _MSGB_H
+
+/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <stdint.h>
+#include "linuxlist.h"
+
+struct bts_link;
+
+struct msgb {
+ struct llist_head list;
+
+ /* ptr to the physical E1 link to the BTS(s) */
+ struct gsm_bts_link *bts_link;
+
+ /* Part of which TRX logical channel we were received / transmitted */
+ struct gsm_bts_trx *trx;
+ struct gsm_lchan *lchan;
+
+ /* the Layer1 header (if any) */
+ unsigned char *l1h;
+ /* the A-bis layer 2 header: OML, RSL(RLL), NS */
+ unsigned char *l2h;
+ /* the layer 3 header. For OML: FOM; RSL: 04.08; GPRS: BSSGP */
+ unsigned char *l3h;
+
+ /* the layer 4 header */
+ union {
+ unsigned char *smsh;
+ unsigned char *llch;
+ };
+
+ /* the layer 5 header, GPRS: GMM header */
+ unsigned char *gmmh;
+ uint32_t tlli;
+
+ uint16_t data_len;
+ uint16_t len;
+
+ unsigned char *head;
+ unsigned char *tail;
+ unsigned char *data;
+ unsigned char _data[0];
+};
+
+extern struct msgb *msgb_alloc(uint16_t size, const char *name);
+extern void msgb_free(struct msgb *m);
+extern void msgb_enqueue(struct llist_head *queue, struct msgb *msg);
+extern struct msgb *msgb_dequeue(struct llist_head *queue);
+extern void msgb_reset(struct msgb *m);
+
++#define msgb_l1(m) ((void *)(m->l1h))
+#define msgb_l2(m) ((void *)(m->l2h))
+#define msgb_l3(m) ((void *)(m->l3h))
+#define msgb_sms(m) ((void *)(m->smsh))
+
++static inline unsigned int msgb_l1len(const struct msgb *msgb)
++{
++ return msgb->tail - (uint8_t *)msgb_l1(msgb);
++}
++
+static inline unsigned int msgb_l2len(const struct msgb *msgb)
+{
+ return msgb->tail - (uint8_t *)msgb_l2(msgb);
+}
+
+static inline unsigned int msgb_l3len(const struct msgb *msgb)
+{
+ return msgb->tail - (uint8_t *)msgb_l3(msgb);
+}
+
+static inline unsigned int msgb_headlen(const struct msgb *msgb)
+{
+ return msgb->len - msgb->data_len;
+}
+static inline unsigned char *msgb_put(struct msgb *msgb, unsigned int len)
+{
+ unsigned char *tmp = msgb->tail;
+ msgb->tail += len;
+ msgb->len += len;
+ return tmp;
+}
+static inline unsigned char *msgb_push(struct msgb *msgb, unsigned int len)
+{
+ msgb->data -= len;
+ msgb->len += len;
+ return msgb->data;
+}
+static inline unsigned char *msgb_pull(struct msgb *msgb, unsigned int len)
+{
+ msgb->len -= len;
+ return msgb->data += len;
+}
+static inline int msgb_tailroom(const struct msgb *msgb)
+{
+ return (msgb->head + msgb->data_len) - msgb->tail;
+}
+
+/* increase the headroom of an empty msgb, reducing the tailroom */
+static inline void msgb_reserve(struct msgb *msg, int len)
+{
+ msg->data += len;
+ msg->tail += len;
+}
+
+static inline struct msgb *msgb_alloc_headroom(int size, int headroom,
+ const char *name)
+{
+ struct msgb *msg = msgb_alloc(size, name);
+ if (msg)
+ msgb_reserve(msg, headroom);
+ return msg;
+}
+
+#endif /* _MSGB_H */
--- /dev/null
--- /dev/null
++/* GSM Radio Signalling Link messages on the A-bis interface
++ * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */
++
++/* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org>
++ *
++ * All Rights Reserved
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License along
++ * with this program; if not, write to the Free Software Foundation, Inc.,
++ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
++ *
++ */
++
++#include <osmocore/tlv.h>
++#include <osmocore/rsl.h>
++
++void rsl_init_rll_hdr(struct abis_rsl_rll_hdr *dh, uint8_t msg_type)
++{
++ dh->c.msg_discr = ABIS_RSL_MDISC_RLL;
++ dh->c.msg_type = msg_type;
++ dh->ie_chan = RSL_IE_CHAN_NR;
++ dh->ie_link_id = RSL_IE_LINK_IDENT;
++}
++
++const struct tlv_definition rsl_att_tlvdef = {
++ .def = {
++ [RSL_IE_CHAN_NR] = { TLV_TYPE_TV },
++ [RSL_IE_LINK_IDENT] = { TLV_TYPE_TV },
++ [RSL_IE_ACT_TYPE] = { TLV_TYPE_TV },
++ [RSL_IE_BS_POWER] = { TLV_TYPE_TV },
++ [RSL_IE_CHAN_IDENT] = { TLV_TYPE_TLV },
++ [RSL_IE_CHAN_MODE] = { TLV_TYPE_TLV },
++ [RSL_IE_ENCR_INFO] = { TLV_TYPE_TLV },
++ [RSL_IE_FRAME_NUMBER] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_HANDO_REF] = { TLV_TYPE_TV },
++ [RSL_IE_L1_INFO] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_L3_INFO] = { TLV_TYPE_TL16V },
++ [RSL_IE_MS_IDENTITY] = { TLV_TYPE_TLV },
++ [RSL_IE_MS_POWER] = { TLV_TYPE_TV },
++ [RSL_IE_PAGING_GROUP] = { TLV_TYPE_TV },
++ [RSL_IE_PAGING_LOAD] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_PYHS_CONTEXT] = { TLV_TYPE_TLV },
++ [RSL_IE_ACCESS_DELAY] = { TLV_TYPE_TV },
++ [RSL_IE_RACH_LOAD] = { TLV_TYPE_TLV },
++ [RSL_IE_REQ_REFERENCE] = { TLV_TYPE_FIXED, 3 },
++ [RSL_IE_RELEASE_MODE] = { TLV_TYPE_TV },
++ [RSL_IE_RESOURCE_INFO] = { TLV_TYPE_TLV },
++ [RSL_IE_RLM_CAUSE] = { TLV_TYPE_TLV },
++ [RSL_IE_STARTNG_TIME] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_TIMING_ADVANCE] = { TLV_TYPE_TV },
++ [RSL_IE_UPLINK_MEAS] = { TLV_TYPE_TLV },
++ [RSL_IE_CAUSE] = { TLV_TYPE_TLV },
++ [RSL_IE_MEAS_RES_NR] = { TLV_TYPE_TV },
++ [RSL_IE_MSG_ID] = { TLV_TYPE_TV },
++ [RSL_IE_SYSINFO_TYPE] = { TLV_TYPE_TV },
++ [RSL_IE_MS_POWER_PARAM] = { TLV_TYPE_TLV },
++ [RSL_IE_BS_POWER_PARAM] = { TLV_TYPE_TLV },
++ [RSL_IE_PREPROC_PARAM] = { TLV_TYPE_TLV },
++ [RSL_IE_PREPROC_MEAS] = { TLV_TYPE_TLV },
++ [RSL_IE_IMM_ASS_INFO] = { TLV_TYPE_TLV },
++ [RSL_IE_SMSCB_INFO] = { TLV_TYPE_FIXED, 23 },
++ [RSL_IE_MS_TIMING_OFFSET] = { TLV_TYPE_TV },
++ [RSL_IE_ERR_MSG] = { TLV_TYPE_TLV },
++ [RSL_IE_FULL_BCCH_INFO] = { TLV_TYPE_TLV },
++ [RSL_IE_CHAN_NEEDED] = { TLV_TYPE_TV },
++ [RSL_IE_CB_CMD_TYPE] = { TLV_TYPE_TV },
++ [RSL_IE_SMSCB_MSG] = { TLV_TYPE_TLV },
++ [RSL_IE_FULL_IMM_ASS_INFO] = { TLV_TYPE_TLV },
++ [RSL_IE_SACCH_INFO] = { TLV_TYPE_TLV },
++ [RSL_IE_CBCH_LOAD_INFO] = { TLV_TYPE_TV },
++ [RSL_IE_SMSCB_CHAN_INDICATOR] = { TLV_TYPE_TV },
++ [RSL_IE_GROUP_CALL_REF] = { TLV_TYPE_TLV },
++ [RSL_IE_CHAN_DESC] = { TLV_TYPE_TLV },
++ [RSL_IE_NCH_DRX_INFO] = { TLV_TYPE_TLV },
++ [RSL_IE_CMD_INDICATOR] = { TLV_TYPE_TLV },
++ [RSL_IE_EMLPP_PRIO] = { TLV_TYPE_TV },
++ [RSL_IE_UIC] = { TLV_TYPE_TLV },
++ [RSL_IE_MAIN_CHAN_REF] = { TLV_TYPE_TV },
++ [RSL_IE_MR_CONFIG] = { TLV_TYPE_TLV },
++ [RSL_IE_MR_CONTROL] = { TLV_TYPE_TV },
++ [RSL_IE_SUP_CODEC_TYPES] = { TLV_TYPE_TLV },
++ [RSL_IE_CODEC_CONFIG] = { TLV_TYPE_TLV },
++ [RSL_IE_RTD] = { TLV_TYPE_TV },
++ [RSL_IE_TFO_STATUS] = { TLV_TYPE_TV },
++ [RSL_IE_LLP_APDU] = { TLV_TYPE_TLV },
++ [RSL_IE_SIEMENS_MRPCI] = { TLV_TYPE_TV },
++ [RSL_IE_IPAC_PROXY_UDP] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_IPAC_BSCMPL_TOUT] = { TLV_TYPE_TV },
++ [RSL_IE_IPAC_REMOTE_IP] = { TLV_TYPE_FIXED, 4 },
++ [RSL_IE_IPAC_REMOTE_PORT] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_IPAC_RTP_PAYLOAD] = { TLV_TYPE_TV },
++ [RSL_IE_IPAC_LOCAL_PORT] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_IPAC_SPEECH_MODE] = { TLV_TYPE_TV },
++ [RSL_IE_IPAC_LOCAL_IP] = { TLV_TYPE_FIXED, 4 },
++ [RSL_IE_IPAC_CONN_ID] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_IPAC_RTP_CSD_FMT] = { TLV_TYPE_TV },
++ [RSL_IE_IPAC_RTP_JIT_BUF] = { TLV_TYPE_FIXED, 2 },
++ [RSL_IE_IPAC_RTP_COMPR] = { TLV_TYPE_TV },
++ [RSL_IE_IPAC_RTP_PAYLOAD2] = { TLV_TYPE_TV },
++ [RSL_IE_IPAC_RTP_MPLEX] = { TLV_TYPE_FIXED, 8 },
++ [RSL_IE_IPAC_RTP_MPLEX_ID] = { TLV_TYPE_TV },
++ },
++};
++
++/* encode channel number as per Section 9.3.1 */
++uint8_t rsl_enc_chan_nr(uint8_t type, uint8_t subch, uint8_t timeslot)
++{
++ uint8_t ret;
++
++ ret = (timeslot & 0x07) | type;
++
++ switch (type) {
++ case RSL_CHAN_Lm_ACCHs:
++ subch &= 0x01;
++ break;
++ case RSL_CHAN_SDCCH4_ACCH:
++ subch &= 0x07;
++ break;
++ case RSL_CHAN_SDCCH8_ACCH:
++ subch &= 0x07;
++ break;
++ default:
++ /* no subchannels allowed */
++ subch = 0x00;
++ break;
++ }
++ ret |= (subch << 3);
++
++ return ret;
++}
++
++/* FIXME: convert to value_string */
++static const char *rsl_err_vals[0xff] = {
++ [RSL_ERR_RADIO_IF_FAIL] = "Radio Interface Failure",
++ [RSL_ERR_RADIO_LINK_FAIL] = "Radio Link Failure",
++ [RSL_ERR_HANDOVER_ACC_FAIL] = "Handover Access Failure",
++ [RSL_ERR_TALKER_ACC_FAIL] = "Talker Access Failure",
++ [RSL_ERR_OM_INTERVENTION] = "O&M Intervention",
++ [RSL_ERR_NORMAL_UNSPEC] = "Normal event, unspecified",
++ [RSL_ERR_T_MSRFPCI_EXP] = "Siemens: T_MSRFPCI Expired",
++ [RSL_ERR_EQUIPMENT_FAIL] = "Equipment Failure",
++ [RSL_ERR_RR_UNAVAIL] = "Radio Resource not available",
++ [RSL_ERR_TERR_CH_FAIL] = "Terrestrial Channel Failure",
++ [RSL_ERR_CCCH_OVERLOAD] = "CCCH Overload",
++ [RSL_ERR_ACCH_OVERLOAD] = "ACCH Overload",
++ [RSL_ERR_PROCESSOR_OVERLOAD] = "Processor Overload",
++ [RSL_ERR_RES_UNAVAIL] = "Resource not available, unspecified",
++ [RSL_ERR_TRANSC_UNAVAIL] = "Transcoding not available",
++ [RSL_ERR_SERV_OPT_UNAVAIL] = "Service or Option not available",
++ [RSL_ERR_ENCR_UNIMPL] = "Encryption algorithm not implemented",
++ [RSL_ERR_SERV_OPT_UNIMPL] = "Service or Option not implemented",
++ [RSL_ERR_RCH_ALR_ACTV_ALLOC] = "Radio channel already activated",
++ [RSL_ERR_INVALID_MESSAGE] = "Invalid Message, unspecified",
++ [RSL_ERR_MSG_DISCR] = "Message Discriminator Error",
++ [RSL_ERR_MSG_TYPE] = "Message Type Error",
++ [RSL_ERR_MSG_SEQ] = "Message Sequence Error",
++ [RSL_ERR_IE_ERROR] = "General IE error",
++ [RSL_ERR_MAND_IE_ERROR] = "Mandatory IE error",
++ [RSL_ERR_OPT_IE_ERROR] = "Optional IE error",
++ [RSL_ERR_IE_NONEXIST] = "IE non-existent",
++ [RSL_ERR_IE_LENGTH] = "IE length error",
++ [RSL_ERR_IE_CONTENT] = "IE content error",
++ [RSL_ERR_PROTO] = "Protocol error, unspecified",
++ [RSL_ERR_INTERWORKING] = "Interworking error, unspecified",
++};
++
++const struct value_string rsl_rlm_cause_strs[] = {
++ { RLL_CAUSE_T200_EXPIRED, "Timer T200 expired (N200+1) times" },
++ { RLL_CAUSE_REEST_REQ, "Re-establishment request" },
++ { RLL_CAUSE_UNSOL_UA_RESP, "Unsolicited UA response" },
++ { RLL_CAUSE_UNSOL_DM_RESP, "Unsolicited DM response" },
++ { RLL_CAUSE_UNSOL_DM_RESP_MF, "Unsolicited DM response, multiple frame" },
++ { RLL_CAUSE_UNSOL_SPRV_RESP, "Unsolicited supervisory response" },
++ { RLL_CAUSE_SEQ_ERR, "Sequence Error" },
++ { RLL_CAUSE_UFRM_INC_PARAM, "U-Frame with incorrect parameters" },
++ { RLL_CAUSE_SFRM_INC_PARAM, "S-Frame with incorrect parameters" },
++ { RLL_CAUSE_IFRM_INC_MBITS, "I-Frame with incorrect use of M bit" },
++ { RLL_CAUSE_IFRM_INC_LEN, "I-Frame with incorrect length" },
++ { RLL_CAUSE_FRM_UNIMPL, "Fraeme not implemented" },
++ { RLL_CAUSE_SABM_MF, "SABM command, multiple frame established state" },
++ { RLL_CAUSE_SABM_INFO_NOTALL, "SABM frame with information not allowed in this state" },
++ { 0, NULL },
++};
++
++const char *rsl_err_name(uint8_t err)
++{
++ if (rsl_err_vals[err])
++ return rsl_err_vals[err];
++ else
++ return "unknown";
++}
++
++/* Section 3.3.2.3 TS 05.02. I think this looks like a table */
++int rsl_ccch_conf_to_bs_cc_chans(int ccch_conf)
++{
++ switch (ccch_conf) {
++ case RSL_BCCH_CCCH_CONF_1_NC:
++ return 1;
++ case RSL_BCCH_CCCH_CONF_1_C:
++ return 1;
++ case RSL_BCCH_CCCH_CONF_2_NC:
++ return 2;
++ case RSL_BCCH_CCCH_CONF_3_NC:
++ return 3;
++ case RSL_BCCH_CCCH_CONF_4_NC:
++ return 4;
++ default:
++ return -1;
++ }
++}
++
++/* Section 3.3.2.3 TS 05.02 */
++int rsl_ccch_conf_to_bs_ccch_sdcch_comb(int ccch_conf)
++{
++ switch (ccch_conf) {
++ case RSL_BCCH_CCCH_CONF_1_NC:
++ return 0;
++ case RSL_BCCH_CCCH_CONF_1_C:
++ return 1;
++ case RSL_BCCH_CCCH_CONF_2_NC:
++ return 0;
++ case RSL_BCCH_CCCH_CONF_3_NC:
++ return 0;
++ case RSL_BCCH_CCCH_CONF_4_NC:
++ return 0;
++ default:
++ return -1;
++ }
++}
projects / osmocom-bb.git / commitdiff