From 36840b90018534ed1c333ed1c072f70fe1e68633 Mon Sep 17 00:00:00 2001
From: Michael Tuexen <tuexen@fh-muenster.de>
Date: Sat, 8 Dec 2018 15:04:27 +0100
Subject: [PATCH] Add print support for HMAC_ALGO parameter.
---
gtests/net/packetdrill/sctp.h | 9 ++++
gtests/net/packetdrill/sctp_chunk_to_string.c | 43 +++++++++++++++++++
2 files changed, 52 insertions(+)
diff --git a/gtests/net/packetdrill/sctp.h b/gtests/net/packetdrill/sctp.h
index 81d71ba1..ab73edda 100644
--- a/gtests/net/packetdrill/sctp.h
+++ b/gtests/net/packetdrill/sctp.h
@@ -445,6 +445,15 @@ struct sctp_chunks_parameter {
__u8 chunk_type[];
} __packed;
+#define SCTP_HMAC_ID_SHA_1 1
+#define SCTP_HMAC_ID_SHA_256 3
+
+struct sctp_hmac_algo_parameter {
+ __be16 type;
+ __be16 length;
+ __be16 hmac_id[];
+} __packed;
+
struct sctp_supported_extensions_parameter {
__be16 type;
__be16 length;
diff --git a/gtests/net/packetdrill/sctp_chunk_to_string.c b/gtests/net/packetdrill/sctp_chunk_to_string.c
index 667c78dc..bc506308 100644
--- a/gtests/net/packetdrill/sctp_chunk_to_string.c
+++ b/gtests/net/packetdrill/sctp_chunk_to_string.c
@@ -511,6 +511,44 @@ static int sctp_chunks_parameter_to_string(
return STATUS_OK;
}
+static int sctp_hmac_algo_parameter_to_string(
+ FILE *s,
+ struct sctp_hmac_algo_parameter *parameter,
+ char **error)
+{
+ u16 i, length, nr_hmac_algos;
+
+ length = ntohs(parameter->length);
+ if ((length < sizeof(struct sctp_hmac_algo_parameter)) ||
+ ((length & 0x0001) != 0)) {
+ asprintf(error,
+ "HMAC_ALGO parameter illegal (length=%u)",
+ length);
+ return STATUS_ERR;
+ }
+ nr_hmac_algos =
+ (length - sizeof(struct sctp_hmac_algo_parameter))
+ / sizeof(u16);
+ fputs("HMAC_ALGO[types=[", s);
+ for (i = 0; i < nr_hmac_algos; i++) {
+ if (i > 0)
+ fputs(", ", s);
+ switch (ntohs(parameter->hmac_id[i])) {
+ case SCTP_HMAC_ID_SHA_1:
+ fputs("SHA-1", s);
+ break;
+ case SCTP_HMAC_ID_SHA_256:
+ fputs("SHA-256", s);
+ break;
+ default:
+ fprintf(s, "0x%04x", ntohs(parameter->hmac_id[i]));
+ break;
+ }
+ }
+ fputs("]]", s);
+ return STATUS_OK;
+}
+
static int sctp_supported_extensions_parameter_to_string(
FILE *s,
struct sctp_supported_extensions_parameter *parameter,
@@ -765,6 +803,11 @@ static int sctp_parameter_to_string(FILE *s,
(struct sctp_chunks_parameter *)parameter,
error);
break;
+ case SCTP_HMAC_ALGO_PARAMETER_TYPE:
+ result = sctp_hmac_algo_parameter_to_string(s,
+ (struct sctp_hmac_algo_parameter *)parameter,
+ error);
+ break;
case SCTP_SUPPORTED_EXTENSIONS_PARAMETER_TYPE:
result = sctp_supported_extensions_parameter_to_string(s,
(struct sctp_supported_extensions_parameter *)parameter,
--
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