osmith
/
wireshark
forked from osmocom/wireshark
1
0
Fork 0
Code Pull Requests Releases Wiki Activity

Provide an indication to taps if the verification tag is reflected. 

svn path=/trunk/; revision=14278
This commit is contained in:
Michael Tüxen 2005-05-02 20:45:22 +00:00
parent 949a9da364
commit b4af92846c
2 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
epan/dissectors/packet-sctp.c
View File

@ -1592,18 +1592,21 @@ dissect_heartbeat_ack_chunk(tvbuff_t *chunk_tvb, guint16 chunk_length, packet_in
dissect_parameter(parameter_tvb, pinfo, chunk_tree, NULL, FALSE);
}
}
#define ABORT_CHUNK_FIRST_ERROR_CAUSE_OFFSET 4
#define SCTP_ABORT_CHUNK_T_BIT 0x01
static void
dissect_abort_chunk(tvbuff_t *chunk_tvb, guint16 chunk_length, packet_info *pinfo, proto_tree *chunk_tree, proto_item *flags_item)
{
tvbuff_t *causes_tvb;
proto_tree *flags_tree;
sctp_info.vtag_reflected = (tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET) & SCTP_ABORT_CHUNK_T_BIT != 0);
if (chunk_tree) {
flags_tree = proto_item_add_subtree(flags_item, ett_sctp_abort_chunk_flags);
proto_tree_add_item(flags_tree, hf_abort_chunk_t_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
causes_tvb = tvb_new_subset(chunk_tvb, CHUNK_VALUE_OFFSET, chunk_length - CHUNK_HEADER_LENGTH, chunk_length - CHUNK_HEADER_LENGTH);
dissect_error_causes(causes_tvb, pinfo, chunk_tree);
}
@ -1690,7 +1693,9 @@ static void
dissect_shutdown_complete_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *flags_item)
{
proto_tree *flags_tree;
sctp_info.vtag_reflected = (tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET) & SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT != 0);
if (chunk_tree) {
flags_tree = proto_item_add_subtree(flags_item, ett_sctp_shutdown_complete_chunk_flags);
proto_tree_add_item(flags_tree, hf_shutdown_complete_chunk_t_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
@ -2262,7 +2267,7 @@ proto_register_sctp(void)
{ &hf_ecne_chunk_lowest_tsn, { "Lowest TSN", "sctp.ecne_lowest_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_cwr_chunk_lowest_tsn, { "Lowest TSN", "sctp.cwr_lowest_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_shutdown_complete_chunk_t_bit, { "T-Bit", "sctp.shutdown_complete_t_bit", FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT, "", HFILL } },
{ &hf_abort_chunk_t_bit, { "T-Bit", "sctp.abort_t_bit", FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT, "", HFILL } },
{ &hf_abort_chunk_t_bit, { "T-Bit", "sctp.abort_t_bit", FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_ABORT_CHUNK_T_BIT, "", HFILL } },
{ &hf_forward_tsn_chunk_tsn, { "New cumulative TSN", "sctp.forward_tsn_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_forward_tsn_chunk_sid, { "Stream identifier", "sctp.forward_tsn_sid", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
{ &hf_forward_tsn_chunk_ssn, { "Stream sequence number", "sctp.forward_tsn_ssn", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },

1
epan/dissectors/packet-sctp.h
View File

@ -36,6 +36,7 @@ struct _sctp_info {
gboolean crc32c_calculated;
gboolean crc32c_correct;
gboolean checksum_zero;
gboolean vtag_reflected;
/* FIXME: do we need the ports and addresses to be here? */
guint16 sport;
guint16 dport;