/* 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>
+/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
*
*/
+#include <stdint.h>
+#include <stdio.h>
+#include <errno.h>
+
#include <osmocore/tlv.h>
#include <osmocore/rsl.h>
+#define RSL_ALLOC_SIZE 200
+#define RSL_ALLOC_HEADROOM 56
+
void rsl_init_rll_hdr(struct abis_rsl_rll_hdr *dh, uint8_t msg_type)
{
dh->c.msg_discr = ABIS_RSL_MDISC_RLL;
dh->ie_link_id = RSL_IE_LINK_IDENT;
}
+void rsl_init_cchan_hdr(struct abis_rsl_cchan_hdr *ch, uint8_t msg_type)
+{
+ ch->c.msg_discr = ABIS_RSL_MDISC_COM_CHAN;
+ ch->c.msg_type = msg_type;
+ ch->ie_chan = RSL_IE_CHAN_NR;
+}
+
const struct tlv_definition rsl_att_tlvdef = {
.def = {
[RSL_IE_CHAN_NR] = { TLV_TYPE_TV },
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",
+int rsl_dec_chan_nr(uint8_t chan_nr, uint8_t *type, uint8_t *subch, uint8_t *timeslot)
+{
+ *timeslot = chan_nr & 0x7;
+
+ if ((chan_nr & 0xf8) == RSL_CHAN_Bm_ACCHs) {
+ *type = RSL_CHAN_Bm_ACCHs;
+ *subch = 0;
+ } else if ((chan_nr & 0xf0) == RSL_CHAN_Lm_ACCHs) {
+ *type = RSL_CHAN_Lm_ACCHs;
+ *subch = (chan_nr >> 3) & 0x1;
+ } else if ((chan_nr & 0xe0) == RSL_CHAN_SDCCH4_ACCH) {
+ *type = RSL_CHAN_SDCCH4_ACCH;
+ *subch = (chan_nr >> 3) & 0x3;
+ } else if ((chan_nr & 0xc0) == RSL_CHAN_SDCCH8_ACCH) {
+ *type = RSL_CHAN_SDCCH8_ACCH;
+ *subch = (chan_nr >> 3) & 0x7;
+ } else if ((chan_nr & 0xf8) == RSL_CHAN_BCCH) {
+ *type = RSL_CHAN_BCCH;
+ *subch = 0;
+ } else if ((chan_nr & 0xf8) == RSL_CHAN_RACH) {
+ *type = RSL_CHAN_RACH;
+ *subch = 0;
+ } else if ((chan_nr & 0xf8) == RSL_CHAN_PCH_AGCH) {
+ *type = RSL_CHAN_PCH_AGCH;
+ *subch = 0;
+ } else
+ return -EINVAL;
+
+ return 0;
+}
+
+const char *rsl_chan_nr_str(uint8_t chan_nr)
+{
+ static char str[20];
+ int ts = chan_nr & 7;
+ uint8_t cbits = chan_nr >> 3;
+
+ if (cbits == 0x01)
+ sprintf(str, "TCH/F on TS%d", ts);
+ else if ((cbits & 0x1e) == 0x02)
+ sprintf(str, "TCH/H(%u) on TS%d", cbits & 0x01, ts);
+ else if ((cbits & 0x1c) == 0x04)
+ sprintf(str, "SDCCH/4(%u) on TS%d", cbits & 0x03, ts);
+ else if ((cbits & 0x18) == 0x08)
+ sprintf(str, "SDCCH/8(%u) on TS%d", cbits & 0x07, ts);
+ else if (cbits == 0x10)
+ sprintf(str, "BCCH on TS%d", ts);
+ else if (cbits == 0x11)
+ sprintf(str, "RACH on TS%d", ts);
+ else if (cbits == 0x12)
+ sprintf(str, "PCH/AGCH on TS%d", ts);
+ else
+ sprintf(str, "UNKNOWN on TS%d", ts);
+
+ return str;
+}
+
+static const struct value_string rsl_err_vals[] = {
+ { 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" },
+ { 0, NULL }
};
-const struct value_string rsl_rlm_cause_strs[] = {
+const char *rsl_err_name(uint8_t err)
+{
+ return get_value_string(rsl_err_vals, err);
+}
+
+static 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" },
{ 0, NULL },
};
-const char *rsl_err_name(uint8_t err)
+const char *rsl_rlm_cause_name(uint8_t err)
{
- if (rsl_err_vals[err])
- return rsl_err_vals[err];
- else
- return "unknown";
+ return get_value_string(rsl_rlm_cause_strs, err);
}
/* Section 3.3.2.3 TS 05.02. I think this looks like a table */
}
}
-/* Push a RSL RLL header with L3_INFO IE */
-int rsl_rll_push_l3(struct msgb *msg, uint8_t msg_type,
- uint8_t chan_nr, uint8_t link_id)
+/* Push a RSL RLL header */
+void rsl_rll_push_hdr(struct msgb *msg, uint8_t msg_type, uint8_t chan_nr,
+ uint8_t link_id, int transparent)
{
- uint8_t l3_len = msg->tail - (uint8_t *)msgb_l3(msg);
struct abis_rsl_rll_hdr *rh;
- /* construct a RSLms RLL message (DATA INDICATION, UNIT DATA
- * INDICATION) and send it off via RSLms */
-
- /* Push the L3 IE tag and lengh */
- msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len);
-
- /* Then push the RSL header */
rh = (struct abis_rsl_rll_hdr *) msgb_push(msg, sizeof(*rh));
rsl_init_rll_hdr(rh, msg_type);
- rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
+ if (transparent)
+ rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
rh->chan_nr = chan_nr;
rh->link_id = link_id;
/* set the l2 header pointer */
msg->l2h = (uint8_t *)rh;
+}
- return 0;
+/* Push a RSL RLL header with L3_INFO IE */
+void rsl_rll_push_l3(struct msgb *msg, uint8_t msg_type, uint8_t chan_nr,
+ uint8_t link_id, int transparent)
+{
+ uint8_t l3_len = msg->tail - (uint8_t *)msgb_l3(msg);
+
+ /* construct a RSLms RLL message (DATA INDICATION, UNIT DATA
+ * INDICATION) and send it off via RSLms */
+
+ /* Push the L3 IE tag and lengh */
+ msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len);
+
+ /* Then push the RSL header */
+ rsl_rll_push_hdr(msg, msg_type, chan_nr, link_id, transparent);
}
struct msgb *rsl_rll_simple(uint8_t msg_type, uint8_t chan_nr,
- uint8_t link_id)
+ uint8_t link_id, int transparent)
{
struct abis_rsl_rll_hdr *rh;
- struct msgb *msg = msgb_alloc(sizeof(*rh), "rsl_rll_simple");
+ struct msgb *msg;
+
+ msg = msgb_alloc_headroom(RSL_ALLOC_SIZE+RSL_ALLOC_HEADROOM,
+ RSL_ALLOC_HEADROOM, "rsl_rll_simple");
if (!msg)
return NULL;
/* put the RSL header */
rh = (struct abis_rsl_rll_hdr *) msgb_put(msg, sizeof(*rh));
rsl_init_rll_hdr(rh, msg_type);
- rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
+ if (transparent)
+ rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
rh->chan_nr = chan_nr;
rh->link_id = link_id;
projects / osmocom-bb.git / blobdiff