mac802154: add ieee802154_vif struct

This patch adds an ieee802154_vif similar like the ieee80211_vif which
holds the interface type and maybe further more attributes like the
ieee80211_vif structure.

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

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index f68ebba..bf47785 100644 (file)
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -1533,6 +1533,7 @@ static int at86rf230_probe(struct spi_device *spi)
        lp->hw = hw;
        lp->spi = spi;
        hw->parent = &spi->dev;
+       hw->vif_data_size = sizeof(*lp);
 
        lp->regmap = devm_regmap_init_spi(spi, &at86rf230_regmap_spi_config);
        if (IS_ERR(lp->regmap)) {

diff --git a/drivers/net/ieee802154/cc2520.c b/drivers/net/ieee802154/cc2520.c
index 340671b..ccbb082 100644 (file)
--- a/drivers/net/ieee802154/cc2520.c
+++ b/drivers/net/ieee802154/cc2520.c
@@ -651,6 +651,7 @@ static int cc2520_register(struct cc2520_private *priv)
        priv->hw->priv = priv;
        priv->hw->parent = &priv->spi->dev;
        priv->hw->extra_tx_headroom = 0;
+       priv->hw->vif_data_size = sizeof(*priv);
 
        /* We do support only 2.4 Ghz */
        priv->hw->phy->channels_supported[0] = 0x7FFF800;

diff --git a/include/net/mac802154.h b/include/net/mac802154.h
index 8b0c26b..10711a6 100644 (file)
--- a/include/net/mac802154.h
+++ b/include/net/mac802154.h
@@ -52,6 +52,13 @@ struct ieee802154_hw_addr_filt {
        u8      pan_coord;
 };
 
+struct ieee802154_vif {
+       int type;
+
+       /* must be last */
+       u8 drv_priv[0] __aligned(sizeof(void *));
+};
+
 struct ieee802154_hw {
        /* filled by the driver */
        int     extra_tx_headroom;
@@ -62,6 +69,7 @@ struct ieee802154_hw {
        struct  ieee802154_hw_addr_filt hw_filt;
        void    *priv;
        struct  wpan_phy *phy;
+       size_t vif_data_size;
 };
 
 /* Checksum is in hardware and is omitted from a packet

diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h
index 748dc5a..931f851 100644 (file)
--- a/net/mac802154/ieee802154_i.h
+++ b/net/mac802154/ieee802154_i.h
@@ -79,7 +79,6 @@ struct ieee802154_sub_if_data {
        struct ieee802154_local *local;
        struct net_device *dev;
 
-       int type;
        unsigned long state;
        char name[IFNAMSIZ];
 
@@ -103,6 +102,8 @@ struct ieee802154_sub_if_data {
        struct mutex sec_mtx;
 
        struct mac802154_llsec sec;
+       /* must be last, dynamically sized area in this! */
+       struct ieee802154_vif vif;
 };
 
 #define MAC802154_CHAN_NONE            0xff /* No channel is assigned */

diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
index 2e2638e..764ce49 100644 (file)
--- a/net/mac802154/iface.c
+++ b/net/mac802154/iface.c
@@ -136,10 +136,11 @@ static int mac802154_slave_open(struct net_device *dev)
 
        ASSERT_RTNL();
 
-       if (sdata->type == IEEE802154_DEV_WPAN) {
+       if (sdata->vif.type == IEEE802154_DEV_WPAN) {
                mutex_lock(&sdata->local->iflist_mtx);
                list_for_each_entry(subif, &sdata->local->interfaces, list) {
-                       if (subif != sdata && subif->type == sdata->type &&
+                       if (subif != sdata &&
+                           subif->vif.type == sdata->vif.type &&
                            ieee802154_sdata_running(subif)) {
                                mutex_unlock(&sdata->local->iflist_mtx);
                                return -EBUSY;
@@ -397,7 +398,7 @@ static int
 ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, int type)
 {
        /* set some type-dependent values */
-       sdata->type = type;
+       sdata->vif.type = type;
 
        get_random_bytes(&sdata->bsn, 1);
        get_random_bytes(&sdata->dsn, 1);
@@ -447,8 +448,8 @@ ieee802154_if_add(struct ieee802154_local *local, const char *name,
 
        ASSERT_RTNL();
 
-       ndev = alloc_netdev(sizeof(*sdata), name, NET_NAME_UNKNOWN,
-                           ieee802154_if_setup);
+       ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, name,
+                           NET_NAME_UNKNOWN, ieee802154_if_setup);
        if (!ndev)
                return ERR_PTR(-ENOMEM);
 

diff --git a/net/mac802154/rx.c b/net/mac802154/rx.c
index 95961cc..4b54cf3 100644 (file)
--- a/net/mac802154/rx.c
+++ b/net/mac802154/rx.c
@@ -208,7 +208,7 @@ __ieee802154_rx_handle_packet(struct ieee802154_local *local,
        }
 
        list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-               if (sdata->type != IEEE802154_DEV_WPAN ||
+               if (sdata->vif.type != IEEE802154_DEV_WPAN ||
                    !netif_running(sdata->dev))
                        continue;
 
@@ -233,7 +233,7 @@ ieee802154_monitors_rx(struct ieee802154_local *local, struct sk_buff *skb)
        skb->protocol = htons(ETH_P_IEEE802154);
 
        list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-               if (sdata->type != IEEE802154_DEV_MONITOR)
+               if (sdata->vif.type != IEEE802154_DEV_MONITOR)
                        continue;
 
                if (!ieee802154_sdata_running(sdata))