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From:   Denis Kenzior <denkenz@gmail.com>
To:     Johannes Berg <johannes@sipsolutions.net>
Cc:     linux-wireless@vger.kernel.org, Denis Kenzior <denkenz@gmail.com>
Subject: [PATCH v3 3/3] nl80211: Include wiphy address setup in NEW_WIPHY
Date:   Mon,  1 Jul 2019 10:33:17 -0500
Message-Id: <20190701153317.27170-3-denkenz@gmail.com>
In-Reply-To: <20190701153317.27170-1-denkenz@gmail.com>
References: <20190701153317.27170-1-denkenz@gmail.com>
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Include wiphy address setup in wiphy dumps and new wiphy events.  The
wiphy permanent address is exposed as ATTR_MAC.  If addr_mask is setup,
then it is included as ATTR_MAC_MASK attribute.  If multiple addresses
are available, then their are exposed in a nested ATTR_MAC_ADDRS array.

This information is already exposed via sysfs, but it makes sense to
include it in the wiphy dump as well.

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
---
 net/wireless/nl80211.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

 Changes in v3:
  - None

 Changes in v2:
  - Move from case 0 to 9
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index ebf5eab1f9b2..fb09c2301ed8 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2166,6 +2166,31 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
 			    rdev->wiphy.vht_capa_mod_mask))
 			goto nla_put_failure;
 
+		if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
+			    rdev->wiphy.perm_addr))
+			goto nla_put_failure;
+
+		if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
+		    nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
+			    rdev->wiphy.addr_mask))
+			goto nla_put_failure;
+
+		if (rdev->wiphy.n_addresses > 1) {
+			void *attr;
+
+			attr = nla_nest_start_noflag(msg,
+						     NL80211_ATTR_MAC_ADDRS);
+			if (!attr)
+				goto nla_put_failure;
+
+			for (i = 0; i < rdev->wiphy.n_addresses; i++)
+				if (nla_put(msg, i + 1, ETH_ALEN,
+					    rdev->wiphy.addresses[i].addr))
+					goto nla_put_failure;
+
+			nla_nest_end(msg, attr);
+		}
+
 		state->split_start++;
 		break;
 	case 10:
-- 
2.21.0