ieee802154: add support for channel pages from IEEE 802.15.4-2006

IEEE 802.15.4-2006 adds new concept: channel pages, which can contain several
channels. Add support for channel pages in the API and in the fakehard driver.
Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>

drivers/ieee802154/fakehard.c

@@ -119,12 +119,13 @@ static u8 fake_get_bsn(struct net_device *dev)
  *       802.15.4-2006 document.
  */
 static int fake_assoc_req(struct net_device *dev,
-		struct ieee802154_addr *addr, u8 channel, u8 cap)
+		struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
 {
 	struct wpan_phy *phy = net_to_phy(dev);
 
 	mutex_lock(&phy->pib_lock);
 	phy->current_channel = channel;
+	phy->current_page = page;
 	mutex_unlock(&phy->pib_lock);
 
 	/* We simply emulate it here */
@@ -191,7 +192,7 @@ static int fake_disassoc_req(struct net_device *dev,
  * document, with 7.3.8 describing coordinator realignment.
  */
 static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
-				u8 channel,
+				u8 channel, u8 page,
 				u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
 				u8 coord_realign)
 {
@@ -199,6 +200,7 @@ static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
 
 	mutex_lock(&phy->pib_lock);
 	phy->current_channel = channel;
+	phy->current_page = page;
 	mutex_unlock(&phy->pib_lock);
 
 	/* We don't emulate beacons here at all, so START should fail */
@@ -222,11 +224,11 @@ static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
  * Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
  */
 static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
-		u8 duration)
+		u8 page, u8 duration)
 {
 	u8 edl[27] = {};
 	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
-			channels,
+			channels, page,
 			type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
 }
 

include/linux/nl802154.h

@@ -64,6 +64,8 @@ enum {
 	IEEE802154_ATTR_COORD_REALIGN,
 	IEEE802154_ATTR_SEC,
 
+	IEEE802154_ATTR_PAGE,
+
 	__IEEE802154_ATTR_MAX,
 };
 

include/net/ieee802154_netdev.h

@@ -80,7 +80,7 @@ static inline int mac_cb_type(struct sk_buff *skb)
 struct ieee802154_mlme_ops {
 	int (*assoc_req)(struct net_device *dev,
 			struct ieee802154_addr *addr,
-			u8 channel, u8 cap);
+			u8 channel, u8 page, u8 cap);
 	int (*assoc_resp)(struct net_device *dev,
 			struct ieee802154_addr *addr,
 			u16 short_addr, u8 status);
@@ -89,10 +89,10 @@ struct ieee802154_mlme_ops {
 			u8 reason);
 	int (*start_req)(struct net_device *dev,
 			struct ieee802154_addr *addr,
-			u8 channel, u8 bcn_ord, u8 sf_ord,
+			u8 channel, u8 page, u8 bcn_ord, u8 sf_ord,
 			u8 pan_coord, u8 blx, u8 coord_realign);
 	int (*scan_req)(struct net_device *dev,
-			u8 type, u32 channels, u8 duration);
+			u8 type, u32 channels, u8 page, u8 duration);
 
 	/*
 	 * FIXME: these should become the part of PIB/MIB interface.

include/net/nl802154.h

@@ -95,7 +95,7 @@ int ieee802154_nl_disassoc_confirm(struct net_device *dev,
  * Note: This API does not permit the return of an active scan result.
  */
 int ieee802154_nl_scan_confirm(struct net_device *dev,
-		u8 status, u8 scan_type, u32 unscanned,
+		u8 status, u8 scan_type, u32 unscanned, u8 page,
 		u8 *edl/*, struct list_head *pan_desc_list */);
 
 /**

net/ieee802154/netlink.c

@@ -232,7 +232,7 @@ int ieee802154_nl_beacon_indic(struct net_device *dev,
 EXPORT_SYMBOL(ieee802154_nl_beacon_indic);
 
 int ieee802154_nl_scan_confirm(struct net_device *dev,
-		u8 status, u8 scan_type, u32 unscanned,
+		u8 status, u8 scan_type, u32 unscanned, u8 page,
 		u8 *edl/* , struct list_head *pan_desc_list */)
 {
 	struct sk_buff *msg;
@@ -251,6 +251,7 @@ int ieee802154_nl_scan_confirm(struct net_device *dev,
 	NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
 	NLA_PUT_U8(msg, IEEE802154_ATTR_SCAN_TYPE, scan_type);
 	NLA_PUT_U32(msg, IEEE802154_ATTR_CHANNELS, unscanned);
+	NLA_PUT_U8(msg, IEEE802154_ATTR_PAGE, page);
 
 	if (edl)
 		NLA_PUT(msg, IEEE802154_ATTR_ED_LIST, 27, edl);
@@ -349,6 +350,7 @@ static int ieee802154_associate_req(struct sk_buff *skb,
 {
 	struct net_device *dev;
 	struct ieee802154_addr addr;
+	u8 page;
 	int ret = -EINVAL;
 
 	if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
@@ -374,8 +376,14 @@ static int ieee802154_associate_req(struct sk_buff *skb,
 	}
 	addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
 
+	if (info->attrs[IEEE802154_ATTR_PAGE])
+		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
+	else
+		page = 0;
+
 	ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
 			nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
+			page,
 			nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));
 
 	dev_put(dev);
@@ -458,6 +466,7 @@ static int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
 	struct ieee802154_addr addr;
 
 	u8 channel, bcn_ord, sf_ord;
+	u8 page;
 	int pan_coord, blx, coord_realign;
 	int ret;
 
@@ -488,13 +497,19 @@ static int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
 	blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
 	coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);
 
+	if (info->attrs[IEEE802154_ATTR_PAGE])
+		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
+	else
+		page = 0;
+
+
 	if (addr.short_addr == IEEE802154_ADDR_BROADCAST) {
 		ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
 		dev_put(dev);
 		return -EINVAL;
 	}
 
-	ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel,
+	ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
 		bcn_ord, sf_ord, pan_coord, blx, coord_realign);
 
 	dev_put(dev);
@@ -508,6 +523,7 @@ static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
 	u8 type;
 	u32 channels;
 	u8 duration;
+	u8 page;
 
 	if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
 	    !info->attrs[IEEE802154_ATTR_CHANNELS] ||
@@ -522,7 +538,13 @@ static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
 	channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
 	duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);
 
-	ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels,
+	if (info->attrs[IEEE802154_ATTR_PAGE])
+		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
+	else
+		page = 0;
+
+
+	ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels, page,
 			duration);
 
 	dev_put(dev);

net/ieee802154/nl_policy.c

@@ -33,6 +33,7 @@ const struct nla_policy ieee802154_policy[IEEE802154_ATTR_MAX + 1] = {
 	[IEEE802154_ATTR_HW_ADDR] = { .type = NLA_HW_ADDR, },
 	[IEEE802154_ATTR_PAN_ID] = { .type = NLA_U16, },
 	[IEEE802154_ATTR_CHANNEL] = { .type = NLA_U8, },
+	[IEEE802154_ATTR_PAGE] = { .type = NLA_U8, },
 	[IEEE802154_ATTR_COORD_SHORT_ADDR] = { .type = NLA_U16, },
 	[IEEE802154_ATTR_COORD_HW_ADDR] = { .type = NLA_HW_ADDR, },
 	[IEEE802154_ATTR_COORD_PAN_ID] = { .type = NLA_U16, },