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authorHarald Welte <laforge@gnumonks.org>2012-06-17 09:31:16 +0800
committerHarald Welte <laforge@gnumonks.org>2012-06-17 09:31:16 +0800
commitfaa70ff2c6c3f592b5601aaa73a3a9a851a6d3c1 (patch)
tree3b04a79f1665c01e70e00a0fc9b32552e3c5ac3c
parent0d5e8e0b565da40ab5213d873c58f41b5d2d4556 (diff)
libgb: remove dependency of BSSGP to include sgsn/gmm internal structs
-rw-r--r--openbsc/include/osmocom/gprs/gprs_bssgp.h17
-rw-r--r--openbsc/src/gprs/gprs_llc.c24
-rw-r--r--openbsc/src/libgb/gprs_bssgp.c41
3 files changed, 55 insertions, 27 deletions
diff --git a/openbsc/include/osmocom/gprs/gprs_bssgp.h b/openbsc/include/osmocom/gprs/gprs_bssgp.h
index 25c902c..4fcdfb5 100644
--- a/openbsc/include/osmocom/gprs/gprs_bssgp.h
+++ b/openbsc/include/osmocom/gprs/gprs_bssgp.h
@@ -204,8 +204,21 @@ enum bssgp_ctr {
int gprs_bssgp_rcvmsg(struct msgb *msg);
/* BSSGP-DL-UNITDATA.req */
-struct sgsn_mm_ctx;
-int gprs_bssgp_tx_dl_ud(struct msgb *msg, struct sgsn_mm_ctx *mmctx);
+struct bssgp_lv {
+ uint16_t len;
+ uint8_t *v;
+};
+/* parameters for BSSGP downlink userdata transmission */
+struct bssgp_dl_ud_par {
+ uint32_t *tlli;
+ char *imsi;
+ uint16_t drx_parms;
+ /* FIXME: priority */
+ struct bssgp_lv ms_ra_cap;
+ uint8_t qos_profile[3];
+};
+int gprs_bssgp_tx_dl_ud(struct msgb *msg, uint16_t pdu_lifetime,
+ struct bssgp_dl_ud_par *dup);
uint16_t bssgp_parse_cell_id(struct gprs_ra_id *raid, const uint8_t *buf);
int bssgp_create_cell_id(uint8_t *buf, const struct gprs_ra_id *raid,
diff --git a/openbsc/src/gprs/gprs_llc.c b/openbsc/src/gprs/gprs_llc.c
index b26f263..c1327b6 100644
--- a/openbsc/src/gprs/gprs_llc.c
+++ b/openbsc/src/gprs/gprs_llc.c
@@ -36,6 +36,26 @@
#include <openbsc/crc24.h>
#include <openbsc/sgsn.h>
+/* Entry function from upper level (LLC), asking us to transmit a BSSGP PDU
+ * to a remote MS (identified by TLLI) at a BTS identified by its BVCI and NSEI */
+static int _bssgp_tx_dl_ud(struct msgb *msg, struct sgsn_mm_ctx *mmctx)
+{
+ struct bssgp_dl_ud_par dup;
+ const uint8_t qos_profile_default[3] = { 0x00, 0x00, 0x20 };
+
+ dup.tlli = NULL;
+ dup.imsi = mmctx->imsi;
+ dup.drx_parms = mmctx->drx_parms;
+ dup.ms_ra_cap.len = mmctx->ms_radio_access_capa.len;
+ dup.ms_ra_cap.v = mmctx->ms_radio_access_capa.buf;
+ dup.pdu_lifetime = 1000; /* centi-seconds */
+ memcpy(&dup.qos_profile, qos_profile_default,
+ sizeof(qos_profile_default));
+
+ return gprs_bssgp_tx_dl_ud(msg, 1000, &dup);
+}
+
+
/* Section 8.9.9 LLC layer parameter default values */
static const struct gprs_llc_params llc_default_params[] = {
[1] = {
@@ -308,7 +328,7 @@ int gprs_llc_tx_u(struct msgb *msg, uint8_t sapi, int command,
/* Identifiers passed down: (BVCI, NSEI) */
/* Send BSSGP-DL-UNITDATA.req */
- return gprs_bssgp_tx_dl_ud(msg, NULL);
+ return _bssgp_tx_dl_ud(msg, 1000, NULL);
}
/* Send XID response to LLE */
@@ -420,7 +440,7 @@ int gprs_llc_tx_ui(struct msgb *msg, uint8_t sapi, int command,
/* Identifiers passed down: (BVCI, NSEI) */
/* Send BSSGP-DL-UNITDATA.req */
- return gprs_bssgp_tx_dl_ud(msg, mmctx);
+ return _bssgp_tx_dl_ud(msg, mmctx);
}
/* According to 6.4.1.6 / Figure 11 */
diff --git a/openbsc/src/libgb/gprs_bssgp.c b/openbsc/src/libgb/gprs_bssgp.c
index a649736..ca99dd5 100644
--- a/openbsc/src/libgb/gprs_bssgp.c
+++ b/openbsc/src/libgb/gprs_bssgp.c
@@ -35,8 +35,6 @@
#include <osmocom/gprs/gprs_bssgp.h>
#include <osmocom/gprs/gprs_ns.h>
-#include <openbsc/gprs_gmm.h>
-
#include "common_vty.h"
void *bssgp_tall_ctx = NULL;
@@ -699,19 +697,17 @@ int gprs_bssgp_rcvmsg(struct msgb *msg)
return rc;
}
-/* Entry function from upper level (LLC), asking us to transmit a BSSGP PDU
- * to a remote MS (identified by TLLI) at a BTS identified by its BVCI and NSEI */
-int gprs_bssgp_tx_dl_ud(struct msgb *msg, struct sgsn_mm_ctx *mmctx)
+int gprs_bssgp_tx_dl_ud(struct msgb *msg, uint16_t pdu_lifetime,
+ struct bssgp_dl_ud_par *dup)
{
struct bssgp_bvc_ctx *bctx;
struct bssgp_ud_hdr *budh;
uint8_t llc_pdu_tlv_hdr_len = 2;
- uint8_t *llc_pdu_tlv, *qos_profile;
- uint16_t pdu_lifetime = 1000; /* centi-seconds */
- uint8_t qos_profile_default[3] = { 0x00, 0x00, 0x20 };
+ uint8_t *llc_pdu_tlv;
uint16_t msg_len = msg->len;
uint16_t bvci = msgb_bvci(msg);
uint16_t nsei = msgb_nsei(msg);
+ uint16_t _pdu_lifetime = htons(pdu_lifetime); /* centi-seconds */
uint16_t drx_params;
/* Identifiers from UP: TLLI, BVCI, NSEI (all in msgb->cb) */
@@ -743,43 +739,42 @@ int gprs_bssgp_tx_dl_ud(struct msgb *msg, struct sgsn_mm_ctx *mmctx)
/* FIXME: optional elements: Alignment, UTRAN CCO, LSA, PFI */
- if (mmctx) {
+ if (dup) {
/* Old TLLI to help BSS map from old->new */
-#if 0
- if (mmctx->tlli_old)
- msgb_tvlv_push(msg, BSSGP_IE_TLLI, 4, htonl(*tlli_old));
-#endif
+ if (dup->tlli) {
+ uint32_t tlli = htonl(*dup->tlli);
+ msgb_tvlv_push(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &tlli);
+ }
/* IMSI */
- if (strlen(mmctx->imsi)) {
+ if (strlen(dup->imsi)) {
uint8_t mi[10];
- int imsi_len = gsm48_generate_mid_from_imsi(mi, mmctx->imsi);
+ int imsi_len = gsm48_generate_mid_from_imsi(mi, dup->imsi);
if (imsi_len > 2)
msgb_tvlv_push(msg, BSSGP_IE_IMSI,
- imsi_len-2, mi+2);
+ imsi_len-2, mi+2);
}
/* DRX parameters */
- drx_params = htons(mmctx->drx_parms);
+ drx_params = htons(dup->drx_parms);
msgb_tvlv_push(msg, BSSGP_IE_DRX_PARAMS, 2,
(uint8_t *) &drx_params);
/* FIXME: Priority */
/* MS Radio Access Capability */
- if (mmctx->ms_radio_access_capa.len)
+ if (dup->ms_ra_cap.len)
msgb_tvlv_push(msg, BSSGP_IE_MS_RADIO_ACCESS_CAP,
- mmctx->ms_radio_access_capa.len,
- mmctx->ms_radio_access_capa.buf);
+ dup->ms_ra_cap.len, dup->ms_ra_cap.v);
+
}
/* prepend the pdu lifetime */
- pdu_lifetime = htons(pdu_lifetime);
- msgb_tvlv_push(msg, BSSGP_IE_PDU_LIFETIME, 2, (uint8_t *)&pdu_lifetime);
+ msgb_tvlv_push(msg, BSSGP_IE_PDU_LIFETIME, 2, (uint8_t *)&_pdu_lifetime);
/* prepend the QoS profile, TLLI and pdu type */
budh = (struct bssgp_ud_hdr *) msgb_push(msg, sizeof(*budh));
- memcpy(budh->qos_profile, qos_profile_default, sizeof(qos_profile_default));
+ memcpy(budh->qos_profile, dup->qos_profile, sizeof(budh->qos_profile));
budh->tlli = htonl(msgb_tlli(msg));
budh->pdu_type = BSSGP_PDUT_DL_UNITDATA;