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: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>

6 files changed, 38 insertions, 11 deletions

diff --git a/drivers/ieee802154/fakehard.c b/drivers/ieee802154/fakehard.c
index 22a93bc764c5..c1c9697f9fde 100644
--- a/drivers/ieee802154/fakehard.c
+++ b/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);
 }
 
diff --git a/include/linux/nl802154.h b/include/linux/nl802154.h
index 9a1af5f871a3..b7d9435d5a9f 100644
--- a/include/linux/nl802154.h
+++ b/include/linux/nl802154.h
@@ -64,6 +64,8 @@ enum {
         IEEE802154_ATTR_COORD_REALIGN,
         IEEE802154_ATTR_SEC,
 
+        IEEE802154_ATTR_PAGE,
+
         __IEEE802154_ATTR_MAX,
 };
 
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index e2506af3e7c8..5dc6a61952de 100644
--- a/include/net/ieee802154_netdev.h
+++ b/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.
diff --git a/include/net/nl802154.h b/include/net/nl802154.h
index e554ecd3727a..99d2ba1c7e03 100644
--- a/include/net/nl802154.h
+++ b/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 */);
 
 /**
diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c
index cd0567f06716..2106ecbf0308 100644
--- a/net/ieee802154/netlink.c
+++ b/net/ieee802154/netlink.c
@@ -232,7 +232,7 @@ nla_put_failure:
 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);
diff --git a/net/ieee802154/nl_policy.c b/net/ieee802154/nl_policy.c
index 83cb4ccef90d..2363ebee02e7 100644
--- a/net/ieee802154/nl_policy.c
+++ b/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, },