osmocom
/
wireshark
14
0
Fork 1
Code Issues Pull Requests Projects Releases Wiki Activity

Add an expert info noting an a_rwnd of 0. 

svn path=/trunk/; revision=26055
This commit is contained in:
Jeff Morriss 2008-08-21 20:29:27 +00:00
parent 1391addb5a
commit 2acffab343
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
epan/dissectors/packet-sctp.c
View File

@ -2845,16 +2845,23 @@ dissect_sack_chunk(packet_info* pinfo, tvbuff_t *chunk_tvb, proto_tree *chunk_tr
proto_tree *block_tree;
proto_tree *flags_tree;
proto_item *ctsa_item;
proto_item *a_rwnd_item;
proto_tree *acks_tree;
guint32 tsns_gap_acked = 0;
guint32 a_rwnd;
flags_tree = proto_item_add_subtree(flags_item, ett_sctp_sack_chunk_flags);
proto_tree_add_item(flags_tree, hf_sack_chunk_ns, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
ctsa_item = proto_tree_add_item(chunk_tree, hf_sack_chunk_cumulative_tsn_ack, chunk_tvb, SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET, SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(chunk_tree, hf_sack_chunk_adv_rec_window_credit, chunk_tvb, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH, NETWORK_BYTE_ORDER);
a_rwnd_item = proto_tree_add_item(chunk_tree, hf_sack_chunk_adv_rec_window_credit, chunk_tvb, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(chunk_tree, hf_sack_chunk_number_of_gap_blocks, chunk_tvb, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_LENGTH, NETWORK_BYTE_ORDER);
proto_tree_add_item(chunk_tree, hf_sack_chunk_number_of_dup_tsns, chunk_tvb, SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET, SACK_CHUNK_NUMBER_OF_DUP_TSNS_LENGTH, NETWORK_BYTE_ORDER);
a_rwnd = tvb_get_ntohl(chunk_tvb, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
if (a_rwnd == 0)
expert_add_info_format(pinfo, a_rwnd_item, PI_SEQUENCE, PI_NOTE, "Zero Advertised Receiver Window Credit");
/* handle the gap acknowledgement blocks */
number_of_gap_blocks = tvb_get_ntohs(chunk_tvb, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET);
gap_block_offset = SACK_CHUNK_GAP_BLOCK_OFFSET;
@ -2918,7 +2925,7 @@ dissect_sack_chunk(packet_info* pinfo, tvbuff_t *chunk_tvb, proto_tree *chunk_tr
proto_item_append_text(chunk_item, " (Cumulative TSN: %u, a_rwnd: %u, gaps: %u, duplicate TSNs: %u)",
tvb_get_ntohl(chunk_tvb, SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET),
tvb_get_ntohl(chunk_tvb, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET),
a_rwnd,
number_of_gap_blocks, number_of_dup_tsns);
}