From b9de1d999f44efd5959169c37069b86fa11eb7de Mon Sep 17 00:00:00 2001
From: Denis Kenzior <denkenz@gmail.com>
Date: Tue, 26 Sep 2017 13:27:35 -0500
Subject: [PATCH] mbim: Add mbim_message_get_arguments

---
 drivers/mbimmodem/mbim-message.c | 32 ++++++++++++++++++++++++++++++++
 drivers/mbimmodem/mbim-message.h |  3 +++
 2 files changed, 35 insertions(+)

diff --git a/drivers/mbimmodem/mbim-message.c b/drivers/mbimmodem/mbim-message.c
index dd036831..16d3bf07 100644
--- a/drivers/mbimmodem/mbim-message.c
+++ b/drivers/mbimmodem/mbim-message.c
@@ -412,3 +412,35 @@ struct mbim_message *_mbim_message_build(const void *header,
 
 	return msg;
 }
+
+bool mbim_message_get_arguments(struct mbim_message *message,
+						const char *signature, ...)
+{
+	struct mbim_message_iter iter;
+	va_list args;
+	bool result;
+	struct mbim_message_header *hdr;
+	uint32_t type;
+	size_t begin;
+
+	if (unlikely(!message))
+		return false;
+
+	if (unlikely(!message->sealed))
+		return false;
+
+	hdr = (struct mbim_message_header *) message->header;
+	type = L_LE32_TO_CPU(hdr->type);
+	begin = _mbim_information_buffer_offset(type);
+
+	_iter_init_internal(&iter, CONTAINER_TYPE_STRUCT,
+				signature, NULL,
+				message->frags, message->n_frags,
+				message->info_buf_len, begin, 0, 0);
+
+	va_start(args, signature);
+	result = message_iter_next_entry_valist(&iter, args);
+	va_end(args);
+
+	return result;
+}
diff --git a/drivers/mbimmodem/mbim-message.h b/drivers/mbimmodem/mbim-message.h
index 2e817d2c..dda523c0 100644
--- a/drivers/mbimmodem/mbim-message.h
+++ b/drivers/mbimmodem/mbim-message.h
@@ -43,4 +43,7 @@ struct mbim_message *mbim_message_new(const uint8_t *uuid, uint32_t cid);
 struct mbim_message *mbim_message_ref(struct mbim_message *msg);
 void mbim_message_unref(struct mbim_message *msg);
 
+bool mbim_message_get_arguments(struct mbim_message *message,
+						const char *signature, ...);
+
 bool mbim_message_iter_next_entry(struct mbim_message_iter *iter, ...);