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authorHolger Hans Peter Freyther <holger@moiji-mobile.com>2015-04-23 11:33:35 -0400
committerHolger Hans Peter Freyther <holger@moiji-mobile.com>2015-05-05 21:11:16 +0200
commit8cedded88c9a0c4c486f987b818ccba57e96421e (patch)
treeec655590774847918a31c7a0c2584ebde759d9c7
parent9ba273d365ac731a9c3ff285821062c346724390 (diff)
sgsn: Store subscribed QoS and attempt to use it
sgsn_create_pdp_ctx should use the subscribed QoS. When selecting the PDP context we inject the QoS to be used into the TLV structure and use it during the request. Assume a "qos-Subscribed" structure only with three bytes and prepend the Allocation/Retention policy to the request.
-rw-r--r--openbsc/include/openbsc/gprs_sgsn.h2
-rw-r--r--openbsc/include/openbsc/gsm_04_08_gprs.h1
-rw-r--r--openbsc/src/gprs/gprs_sgsn.c15
-rw-r--r--openbsc/src/gprs/gprs_subscriber.c9
-rw-r--r--openbsc/src/gprs/sgsn_libgtp.c18
5 files changed, 41 insertions, 4 deletions
diff --git a/openbsc/include/openbsc/gprs_sgsn.h b/openbsc/include/openbsc/gprs_sgsn.h
index baa2d78..7a429cd 100644
--- a/openbsc/include/openbsc/gprs_sgsn.h
+++ b/openbsc/include/openbsc/gprs_sgsn.h
@@ -294,6 +294,8 @@ struct sgsn_subscriber_pdp_data {
unsigned int context_id;
uint16_t pdp_type;
char apn_str[GSM_APN_LENGTH];
+ uint8_t qos_subscribed[20];
+ size_t qos_subscribed_len;
};
struct sgsn_subscriber_data {
diff --git a/openbsc/include/openbsc/gsm_04_08_gprs.h b/openbsc/include/openbsc/gsm_04_08_gprs.h
index 3eec983..f35d11b 100644
--- a/openbsc/include/openbsc/gsm_04_08_gprs.h
+++ b/openbsc/include/openbsc/gsm_04_08_gprs.h
@@ -100,6 +100,7 @@ enum gsm48_gprs_ie_sm {
* but which we use to simplify internal APIs */
OSMO_IE_GSM_REQ_QOS = 0xfd,
OSMO_IE_GSM_REQ_PDP_ADDR = 0xfe,
+ OSMO_IE_GSM_SUB_QOS = 0xff,
};
/* Chapter 9.4.15 / Table 9.4.15 */
diff --git a/openbsc/src/gprs/gprs_sgsn.c b/openbsc/src/gprs/gprs_sgsn.c
index 94c2b6f..711540e 100644
--- a/openbsc/src/gprs/gprs_sgsn.c
+++ b/openbsc/src/gprs/gprs_sgsn.c
@@ -582,6 +582,17 @@ void sgsn_update_subscriber_data(struct sgsn_mm_ctx *mmctx)
sgsn_auth_update(mmctx);
}
+static void insert_qos(struct tlv_parsed *tp, struct sgsn_subscriber_pdp_data *pdp)
+{
+ tp->lv[OSMO_IE_GSM_SUB_QOS].len = pdp->qos_subscribed_len;
+ tp->lv[OSMO_IE_GSM_SUB_QOS].val = pdp->qos_subscribed;
+}
+
+/**
+ * The tlv_parsed tp parameter will be modified to insert a
+ * OSMO_IE_GSM_SUB_QOS in case the data is available in the
+ * PDP context handling.
+ */
struct sgsn_ggsn_ctx *sgsn_mm_ctx_find_ggsn_ctx(struct sgsn_mm_ctx *mmctx,
struct tlv_parsed *tp,
enum gsm48_gsm_cause *gsm_cause)
@@ -621,6 +632,7 @@ struct sgsn_ggsn_ctx *sgsn_mm_ctx_find_ggsn_ctx(struct sgsn_mm_ctx *mmctx,
{
allow_any_apn = 1;
selected_apn_str = "";
+ insert_qos(tp, pdp);
continue;
}
if (!llist_empty(&sgsn_apn_ctxts)) {
@@ -629,6 +641,7 @@ struct sgsn_ggsn_ctx *sgsn_mm_ctx_find_ggsn_ctx(struct sgsn_mm_ctx *mmctx,
if (apn_ctx == NULL)
continue;
}
+ insert_qos(tp, pdp);
selected_apn_str = pdp->apn_str;
break;
}
@@ -636,11 +649,13 @@ struct sgsn_ggsn_ctx *sgsn_mm_ctx_find_ggsn_ctx(struct sgsn_mm_ctx *mmctx,
/* Check whether the given APN is granted */
llist_for_each_entry(pdp, &mmctx->subscr->sgsn_data->pdp_list, list) {
if (strcmp(pdp->apn_str, "*") == 0) {
+ insert_qos(tp, pdp);
selected_apn_str = req_apn_str;
allow_any_apn = 1;
continue;
}
if (strcasecmp(pdp->apn_str, req_apn_str) == 0) {
+ insert_qos(tp, pdp);
selected_apn_str = req_apn_str;
break;
}
diff --git a/openbsc/src/gprs/gprs_subscriber.c b/openbsc/src/gprs/gprs_subscriber.c
index 52e7ba7..c2a3ae1 100644
--- a/openbsc/src/gprs/gprs_subscriber.c
+++ b/openbsc/src/gprs/gprs_subscriber.c
@@ -295,6 +295,13 @@ static void gprs_subscr_gsup_insert_data(struct gsm_subscriber *subscr,
continue;
}
+ if (pdp_info->qos_enc_len > sizeof(pdp_data->qos_subscribed)) {
+ LOGGSUBSCRP(LOGL_ERROR, subscr,
+ "QoS info too long (%zu)\n",
+ pdp_info->qos_enc_len);
+ continue;
+ }
+
LOGGSUBSCRP(LOGL_INFO, subscr,
"Will set PDP info, context id = %zu, APN = %s\n",
ctx_id, osmo_hexdump(pdp_info->apn_enc, pdp_info->apn_enc_len));
@@ -310,6 +317,8 @@ static void gprs_subscr_gsup_insert_data(struct gsm_subscriber *subscr,
pdp_data->pdp_type = pdp_info->pdp_type;
gprs_apn_to_str(pdp_data->apn_str,
pdp_info->apn_enc, pdp_info->apn_enc_len);
+ memcpy(pdp_data->qos_subscribed, pdp_info->qos_enc, pdp_info->qos_enc_len);
+ pdp_data->qos_subscribed_len = pdp_info->qos_enc_len;
}
}
diff --git a/openbsc/src/gprs/sgsn_libgtp.c b/openbsc/src/gprs/sgsn_libgtp.c
index 25b30d0..dd02457 100644
--- a/openbsc/src/gprs/sgsn_libgtp.c
+++ b/openbsc/src/gprs/sgsn_libgtp.c
@@ -123,6 +123,8 @@ struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn,
struct sgsn_pdp_ctx *pctx;
struct pdp_t *pdp;
uint64_t imsi_ui64;
+ size_t qos_len;
+ const uint8_t *qos;
int rc;
LOGP(DGPRS, LOGL_ERROR, "Create PDP Context\n");
@@ -188,12 +190,20 @@ struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn,
memcpy(pdp->pco_req.v, TLVP_VAL(tp, GSM48_IE_GSM_PROTO_CONF_OPT),
pdp->pco_req.l);
- /* QoS options from GMM */
- pdp->qos_req.l = TLVP_LEN(tp, OSMO_IE_GSM_REQ_QOS);
+ /* QoS options from GMM or remote */
+ if (TLVP_LEN(tp, OSMO_IE_GSM_SUB_QOS) > 0) {
+ qos_len = TLVP_LEN(tp, OSMO_IE_GSM_SUB_QOS);
+ qos = TLVP_VAL(tp, OSMO_IE_GSM_SUB_QOS);
+ } else {
+ qos_len = TLVP_LEN(tp, OSMO_IE_GSM_REQ_QOS);
+ qos = TLVP_VAL(tp, OSMO_IE_GSM_REQ_QOS);
+ }
+
+ pdp->qos_req.l = qos_len + 1;
if (pdp->qos_req.l > sizeof(pdp->qos_req.v))
pdp->qos_req.l = sizeof(pdp->qos_req.v);
- memcpy(pdp->qos_req.v, TLVP_VAL(tp, OSMO_IE_GSM_REQ_QOS),
- pdp->qos_req.l);
+ pdp->qos_req.v[0] = 0; /* Allocation/Retention policy */
+ memcpy(&pdp->qos_req.v[1], qos, pdp->qos_req.l - 1);
/* SGSN address for control plane */
pdp->gsnlc.l = sizeof(sgsn->cfg.gtp_listenaddr.sin_addr);