From fd4ab5d3dfa2cb36c5930b61469e1df4724fc486 Mon Sep 17 00:00:00 2001
From: Andrew Zaborowski <andrew.zaborowski@intel.com>
Date: Fri, 19 May 2017 03:39:31 +0200
Subject: [PATCH] wiphy: Add wiphy_get_ext_feature

Save the extended features reported by the wiphy in the NEW_WIPHY event
or GET_WIPHY dump and allow netdev to query it with
wiphy_get_ext_feature()
---
 src/wiphy.c | 14 ++++++++++++++
 src/wiphy.h |  1 +
 2 files changed, 15 insertions(+)

diff --git a/src/wiphy.c b/src/wiphy.c
index 650d6a16..abff4376 100644
--- a/src/wiphy.c
+++ b/src/wiphy.c
@@ -43,6 +43,7 @@
 #include "src/rfkill.h"
 #include "src/wiphy.h"
 #include "src/storage.h"
+#include "src/util.h"
 
 static struct l_genl_family *nl80211 = NULL;
 static struct l_hwdb *hwdb;
@@ -53,6 +54,7 @@ struct wiphy {
 	uint32_t id;
 	char name[20];
 	uint32_t feature_flags;
+	uint8_t ext_features[2];
 	bool support_scheduled_scan:1;
 	bool support_rekey_offload:1;
 	uint16_t supported_ciphers;
@@ -179,6 +181,12 @@ bool wiphy_can_connect(struct wiphy *wiphy, struct scan_bss *bss)
 	return true;
 }
 
+bool wiphy_get_ext_feature(struct wiphy *wiphy, unsigned int idx)
+{
+	return idx < sizeof(wiphy->ext_features) * 8 &&
+		util_is_bit_set(wiphy->ext_features[idx >> 3], idx & 7);
+}
+
 static void wiphy_print_basic_info(struct wiphy *wiphy)
 {
 	uint32_t bands;
@@ -339,6 +347,12 @@ static void wiphy_parse_attributes(struct wiphy *wiphy,
 			else
 				wiphy->feature_flags = *((uint32_t *) data);
 
+			break;
+		case NL80211_ATTR_EXT_FEATURES:
+			if (len > sizeof(wiphy->ext_features))
+				len = sizeof(wiphy->ext_features);
+
+			memcpy(wiphy->ext_features, data, len);
 			break;
 		case NL80211_ATTR_SUPPORTED_COMMANDS:
 			if (l_genl_attr_recurse(attr, &nested))
diff --git a/src/wiphy.h b/src/wiphy.h
index c4a2cc30..762f8279 100644
--- a/src/wiphy.h
+++ b/src/wiphy.h
@@ -34,6 +34,7 @@ struct wiphy *wiphy_find(int wiphy_id);
 const char *wiphy_get_path(struct wiphy *wiphy);
 uint32_t wiphy_get_supported_bands(struct wiphy *wiphy);
 bool wiphy_can_connect(struct wiphy *wiphy, struct scan_bss *bss);
+bool wiphy_get_ext_feature(struct wiphy *wiphy, unsigned int idx);
 
 bool wiphy_init(struct l_genl_family *in, const char *whitelist,
 							const char *blacklist);