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6lowpan: add generic 6lowpan netdev private data

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This patch introduced the 6lowpan netdev private data struct. We name it
lowpan_priv and it's placed at the beginning of netdev private data. All
lowpan interfaces should allocate this room at first of netdev private
data. 6LoWPAN LL private data can be allocate by additional netdev private
data, e.g. dev->priv_size should be "sizeof(struct lowpan_priv) +
sizeof(LL_LOWPAN_PRIVATE_DATA)".

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring
2015-08-11 21:44:08 +02:00
committed by Marcel Holtmann
parent a42bbba5af
commit b72f6f51dc
6 changed files with 55 additions and 6 deletions
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9
net/bluetooth/6lowpan.c
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@@ -85,7 +85,7 @@ struct lowpan_dev {
static inline struct lowpan_dev *lowpan_dev(const struct net_device *netdev)
{
return netdev_priv(netdev);
return (struct lowpan_dev *)lowpan_priv(netdev)->priv;
}
static inline void peer_add(struct lowpan_dev *dev, struct lowpan_peer *peer)
@@ -848,8 +848,9 @@ static int setup_netdev(struct l2cap_chan *chan, struct lowpan_dev **dev)
struct net_device *netdev;
int err = 0;
netdev = alloc_netdev(sizeof(struct lowpan_dev), IFACE_NAME_TEMPLATE,
NET_NAME_UNKNOWN, netdev_setup);
netdev = alloc_netdev(LOWPAN_PRIV_SIZE(sizeof(struct lowpan_dev)),
IFACE_NAME_TEMPLATE, NET_NAME_UNKNOWN,
netdev_setup);
if (!netdev)
return -ENOMEM;
@@ -869,6 +870,8 @@ static int setup_netdev(struct l2cap_chan *chan, struct lowpan_dev **dev)
list_add_rcu(&(*dev)->list, &bt_6lowpan_devices);
spin_unlock(&devices_lock);
lowpan_netdev_setup(netdev, LOWPAN_LLTYPE_BTLE);
err = register_netdev(netdev);
if (err < 0) {
BT_INFO("register_netdev failed %d", err);