From 922e10e82cb7d2c59c7f20fba588755df5181c93 Mon Sep 17 00:00:00 2001
From: James Prestwood <james.prestwood@linux.intel.com>
Date: Fri, 22 Feb 2019 15:39:39 -0800
Subject: [PATCH] ie: add macro for calculating an IE's length

All over the place we do "ie[1] + 2" for getting the IE length. It
is much clearer to use a macro to do this. The macro also checks
for NULL, and returns zero in this case.
---
 src/ie.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ie.h b/src/ie.h
index da7d6d71..ce36060a 100644
--- a/src/ie.h
+++ b/src/ie.h
@@ -258,6 +258,9 @@ enum ie_rsn_akm_suite {
 	((akm == IE_RSN_AKM_SUITE_SAE_SHA256) || \
 	(akm == IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256))
 
+#define IE_LEN(ie) \
+	(ie) ? (ie)[1] + 2 : 0
+
 struct ie_tlv_iter {
 	unsigned int max;
 	unsigned int pos;