[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.
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@ -1,7 +1,7 @@
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/*
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* SCCP management code
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*
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* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
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* (C) 2009, 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
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*
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* All Rights Reserved
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*
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@ -143,10 +143,25 @@ extern const struct sockaddr_sccp sccp_ssn_bssap;
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u_int32_t sccp_src_ref_to_int(struct sccp_source_reference *ref);
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struct sccp_source_reference sccp_src_ref_from_int(u_int32_t);
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/**
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* Below this are helper functions and structs for parsing SCCP messages
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*/
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struct sccp_parse_result {
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struct sccp_address called;
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struct sccp_address calling;
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/* point to the msg packet */
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struct sccp_source_reference *source_local_reference;
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struct sccp_source_reference *destination_local_reference;
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/* data pointer */
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int data_len;
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};
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/*
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* helper functions for the nat code
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*/
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int sccp_determine_msg_type(struct msgb *msg);
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int sccp_parse_header(struct msgb *msg, struct sccp_parse_result *result);
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#endif
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