mac802154: add hardware address filter flag

Overdue introduction for address filtering hardware flag. Furthermore we
will check and set address filtering on interface up. This patch
prepares that we can check if an transceiver supports address filtering
option. Currently all mainline driver supports hardware address filtering.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Alan Ott <alan@signal11.us>
Cc: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/net/ieee802154/at86rf230.c

@@ -1387,7 +1387,8 @@ at86rf230_detect_device(struct at86rf230_local *lp)
 
 	lp->hw->extra_tx_headroom = 0;
 	lp->hw->flags = IEEE802154_HW_OMIT_CKSUM | IEEE802154_HW_AACK |
-			IEEE802154_HW_TXPOWER | IEEE802154_HW_ARET;
+			IEEE802154_HW_TXPOWER | IEEE802154_HW_ARET |
+			IEEE802154_HW_AFILT;
 
 	switch (part) {
 	case 2:

drivers/net/ieee802154/cc2520.c

@@ -654,7 +654,8 @@ static int cc2520_register(struct cc2520_private *priv)
 
 	/* We do support only 2.4 Ghz */
 	priv->hw->phy->channels_supported[0] = 0x7FFF800;
-	priv->hw->flags = IEEE802154_HW_OMIT_CKSUM | IEEE802154_HW_AACK;
+	priv->hw->flags = IEEE802154_HW_OMIT_CKSUM | IEEE802154_HW_AACK |
+			  IEEE802154_HW_AFILT;
 
 	dev_vdbg(&priv->spi->dev, "registered cc2520\n");
 	ret = ieee802154_register_hw(priv->hw);

drivers/net/ieee802154/mrf24j40.c

@@ -751,7 +751,8 @@ static int mrf24j40_probe(struct spi_device *spi)
 	devrec->hw->priv = devrec;
 	devrec->hw->parent = &devrec->spi->dev;
 	devrec->hw->phy->channels_supported[0] = CHANNEL_MASK;
-	devrec->hw->flags = IEEE802154_HW_OMIT_CKSUM|IEEE802154_HW_AACK;
+	devrec->hw->flags = IEEE802154_HW_OMIT_CKSUM | IEEE802154_HW_AACK |
+			    IEEE802154_HW_AFILT;
 
 	dev_dbg(printdev(devrec), "registered mrf24j40\n");
 	ret = ieee802154_register_hw(devrec->hw);

include/net/mac802154.h

@@ -90,6 +90,8 @@ struct ieee802154_hw {
 #define IEEE802154_HW_CSMA_PARAMS	0x00000040
 /* Indicates that transceiver will support ARET frame retries setting. */
 #define IEEE802154_HW_FRAME_RETRIES	0x00000080
+/* Indicates that transceiver will support hardware address filter setting. */
+#define IEEE802154_HW_AFILT		0x00000100
 
 /* This groups the most common CSMA support fields into one. */
 #define IEEE802154_HW_CSMA		(IEEE802154_HW_CCA_MODE | \