From 04982ad239b84f2bbce85b18273841d6a7ee5593 Mon Sep 17 00:00:00 2001
From: Michael Tuexen <tuexen@fh-muenster.de>
Date: Thu, 17 Sep 2015 04:06:12 +0200
Subject: [PATCH] Add print support for I-DATA chunk.
---
gtests/net/packetdrill/sctp_chunk_to_string.c | 47 +++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/gtests/net/packetdrill/sctp_chunk_to_string.c b/gtests/net/packetdrill/sctp_chunk_to_string.c
index 59c246a0..a4ae270e 100644
--- a/gtests/net/packetdrill/sctp_chunk_to_string.c
+++ b/gtests/net/packetdrill/sctp_chunk_to_string.c
@@ -1206,6 +1206,49 @@ static int sctp_shutdown_complete_chunk_to_string(
return STATUS_OK;
}
+static int sctp_i_data_chunk_to_string(FILE *s,
+ struct sctp_i_data_chunk *chunk,
+ char **error)
+{
+ u16 length;
+ u8 flags;
+
+ flags = chunk->flags;
+ length = ntohs(chunk->length);
+ if (length < sizeof(struct sctp_i_data_chunk)) {
+ asprintf(error, "I-DATA chunk too short (length=%u)", length);
+ return STATUS_ERR;
+ }
+ fputs("I-DATA[", s);
+ fputs("flgs=", s);
+ if ((flags & ~(SCTP_I_DATA_CHUNK_I_BIT |
+ SCTP_I_DATA_CHUNK_U_BIT |
+ SCTP_I_DATA_CHUNK_B_BIT |
+ SCTP_I_DATA_CHUNK_E_BIT)) || (flags == 0x00))
+ fprintf(s, "0x%02x", chunk->flags);
+ else {
+ if (flags & SCTP_I_DATA_CHUNK_I_BIT)
+ fputc('I', s);
+ if (flags & SCTP_I_DATA_CHUNK_U_BIT)
+ fputc('U', s);
+ if (flags & SCTP_I_DATA_CHUNK_B_BIT)
+ fputc('B', s);
+ if (flags & SCTP_I_DATA_CHUNK_E_BIT)
+ fputc('E', s);
+ }
+ fputs(", ", s);
+ fprintf(s, "len=%u, ", length);
+ fprintf(s, "tsn=%u, ", ntohl(chunk->tsn));
+ fprintf(s, "sid=%d, ", ntohs(chunk->sid));
+ fprintf(s, "mid=%u, ", ntohl(chunk->mid));
+ if (flags & SCTP_I_DATA_CHUNK_B_BIT)
+ fprintf(s, "ppid=%u", ntohl(chunk->field.ppid));
+ else
+ fprintf(s, "fsn=%u", ntohl(chunk->field.fsn));
+ fputc(']', s);
+ return STATUS_OK;
+}
+
static int sctp_pad_chunk_to_string(
FILE *s,
struct sctp_pad_chunk *chunk,
@@ -1305,6 +1348,10 @@ int sctp_chunk_to_string(FILE *s, struct sctp_chunk *chunk, char **error)
result = sctp_shutdown_complete_chunk_to_string(s,
(struct sctp_shutdown_complete_chunk *)chunk, error);
break;
+ case SCTP_I_DATA_CHUNK_TYPE:
+ result = sctp_i_data_chunk_to_string(s,
+ (struct sctp_i_data_chunk *)chunk, error);
+ break;
case SCTP_PAD_CHUNK_TYPE:
result = sctp_pad_chunk_to_string(s,
(struct sctp_pad_chunk *)chunk, error);
--
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