From ce08cd344a0027076b2f46b9e8988d08f6641252 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Mon, 13 Jun 2022 16:51:27 +0200
Subject: [PATCH] wifi: nl80211: expose link information for interfaces
When getting/dumping an interface, expose information about
valid links.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
net/wireless/nl80211.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 0a69a5a6b74d1..64934dd923ce5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3800,6 +3800,28 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flag
goto nla_put_failure;
}
+ if (wdev->valid_links) {
+ unsigned int link_id;
+ struct nlattr *links = nla_nest_start(msg,
+ NL80211_ATTR_MLO_LINKS);
+
+ if (!links)
+ goto nla_put_failure;
+
+ for_each_valid_link(wdev, link_id) {
+ struct nlattr *link = nla_nest_start(msg, link_id + 1);
+
+ if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
+ goto nla_put_failure;
+ if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
+ wdev->links[link_id].addr))
+ goto nla_put_failure;
+ nla_nest_end(msg, link);
+ }
+
+ nla_nest_end(msg, links);
+ }
+
genlmsg_end(msg, hdr);
return 0;
--
2.30.2