Enable AP support for allmulticast for MDNS. It can be enabled by bringing
up the interface with ip command with argument allmulticast on

---

PATCH v4: fixes space in signed-off, tabbing for comment and indentation of 
closing bracket

 drivers/net/wireless/ti/wlcore/main.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/net/wireless/ti/wlcore/main.c 
b/drivers/net/wireless/ti/wlcore/main.c
index 3241e9eba73..242111cd016 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -3281,6 +3281,21 @@ static void wl1271_op_configure_filter(struct 
ieee80211_hw *hw,
                        if (ret < 0)
                                goto out_sleep;
                }
+
+               /*
+                * If interface in AP mode and created with allmulticast then 
disable
+                * the firmware filters so that all multicast packets are passed
+                * This is mandatory for MDNS based discovery protocols 
+                */
+               if (wlvif->bss_type == BSS_TYPE_AP_BSS) {
+                       if (*total & FIF_ALLMULTI) {
+                               ret = wl1271_acx_group_address_tbl(wl, wlvif,
+                                                       false,
+                                                       NULL, 0);
+                               if (ret < 0)
+                                       goto out_sleep;
+                               }
+               }
        }
 
        /*
-- 
2.11.0

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