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[sccp] Invent new API to be used by the BSC NAT 

I want to reuse the SCCP code for header parsing in the BSC
NAT to identify data and patch the source local reference. To do
this the current handle_* methods will be changed into two parts
one is strictly parsing the other is handling the parsed data.
This commit is contained in:
Holger Hans Peter Freyther 2010-01-27 12:29:49 +01:00
parent a692fbcff5
commit 82da7fcf62
1 changed files with 16 additions and 1 deletions
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17
openbsc/include/sccp/sccp.h
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@ -1,7 +1,7 @@
/*
* SCCP management code
*
* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2009, 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
*
* All Rights Reserved
*
@ -143,10 +143,25 @@ 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);
/**
* Below this are helper functions and structs for parsing SCCP messages
*/
struct sccp_parse_result {
struct sccp_address called;
struct sccp_address calling;
/* point to the msg packet */
struct sccp_source_reference *source_local_reference;
struct sccp_source_reference *destination_local_reference;
/* data pointer */
int data_len;
};
/*
* helper functions for the nat code
*/
int sccp_determine_msg_type(struct msgb *msg);
int sccp_parse_header(struct msgb *msg, struct sccp_parse_result *result);
#endif