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[sccp] Make it optional to send data on a SCCP Connection Refuse

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This can be used to send a Location Updating Reject down to the
BSC when it is clear that a subscriber is not allowed.
This commit is contained in:
Holger Hans Peter Freyther
2010-05-15 01:04:42 +08:00
parent 3dfcd4636a
commit 60fa0efcc8
3 changed files with 11 additions and 4 deletions
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2
openbsc/include/sccp/sccp.h
View File

@@ -148,7 +148,7 @@ extern const struct sockaddr_sccp sccp_ssn_bssap;
u_int32_t sccp_src_ref_to_int(struct sccp_source_reference *ref);
struct sccp_source_reference sccp_src_ref_from_int(u_int32_t);
struct msgb *sccp_create_refuse(struct sccp_source_reference *src_ref, int cause);
struct msgb *sccp_create_refuse(struct sccp_source_reference *src_ref, int cause, uint8_t *data, int length);
/**
* Below this are helper functions and structs for parsing SCCP messages

2
openbsc/src/nat/bsc_nat.c
View File

@@ -677,7 +677,7 @@ exit2:
exit3:
/* send a SCCP Connection Refused */
refuse = sccp_create_refuse(parsed->src_local_ref, SCCP_REFUSAL_SCCP_FAILURE);
refuse = sccp_create_refuse(parsed->src_local_ref, SCCP_REFUSAL_SCCP_FAILURE, NULL, 0);
if (refuse) {
bsc_send_data(bsc, refuse->l2h, msgb_l2len(refuse), IPAC_PROTO_SCCP);
msgb_free(refuse);

11
openbsc/src/sccp/sccp.c
View File

@@ -638,7 +638,7 @@ static void _sccp_set_connection_state(struct sccp_connection *connection, int n
connection->state_cb(connection, old_state);
}
struct msgb *sccp_create_refuse(struct sccp_source_reference *src_ref, int cause)
struct msgb *sccp_create_refuse(struct sccp_source_reference *src_ref, int cause, uint8_t *inp, int length)
{
struct msgb *msgb;
struct sccp_connection_refused *ref;
@@ -660,6 +660,13 @@ struct msgb *sccp_create_refuse(struct sccp_source_reference *src_ref, int cause
ref->cause = cause;
ref->optional_start = 1;
if (inp) {
data = msgb_put(msgb, 1 + 1 + length);
data[0] = SCCP_PNC_DATA;
data[1] = length;
memcpy(&data[2], inp, length);
}
data = msgb_put(msgb, 1);
data[0] = SCCP_PNC_END_OF_OPTIONAL;
return msgb;
@@ -667,7 +674,7 @@ struct msgb *sccp_create_refuse(struct sccp_source_reference *src_ref, int cause
static int _sccp_send_refuse(struct sccp_source_reference *src_ref, int cause)
{
struct msgb *msgb = sccp_create_refuse(src_ref, cause);
struct msgb *msgb = sccp_create_refuse(src_ref, cause, NULL, 0);
if (!msgb)
return -1;