qtnfmac: track broadcast domain of each interface

If firmware reports that it supports hardware switch capabilities,
driver needs to track and notify device whenever broadcast domain
of a particular network device changes (ie. whenever it's upper
master device changes).

Firmware needs a unique ID to tell broadcast domains from each other
which is an opaque number otherwise. For that purpose we can use
netspace:ifidx pair to uniquely identify each broadcast domain:
 - if netdev is not part of a bridge, then use it's own ifidx
   as a broadcast domain ID
 - if netdev is part of a bridge, then use bridge netdev ifidx
   as broadcast domain ID

Firmware makes sure that packets are only forwarded between
interfaces marked with the same broadcast domain ID.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 4f02159a69db..59d089e092f9 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -248,6 +248,15 @@ static struct wireless_dev *qtnf_add_virtual_intf(struct wiphy *wiphy,
 		goto error_del_vif;
 	}
 
+	if (mac->bus->hw_info.hw_capab & QLINK_HW_CAPAB_HW_BRIDGE) {
+		ret = qtnf_cmd_netdev_changeupper(vif, vif->netdev->ifindex);
+		if (ret) {
+			unregister_netdevice(vif->netdev);
+			vif->netdev = NULL;
+			goto error_del_vif;
+		}
+	}
+
 	vif->wdev.netdev = vif->netdev;
 	return &vif->wdev;