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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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3
net/ieee802154/6lowpan/6lowpan_i.h
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@@ -5,6 +5,7 @@
#include <net/ieee802154_netdev.h>
#include <net/inet_frag.h>
#include <net/6lowpan.h>
struct lowpan_create_arg {
u16 tag;
@@ -46,7 +47,7 @@ struct lowpan_dev_info {
static inline struct
lowpan_dev_info *lowpan_dev_info(const struct net_device *dev)
{
return netdev_priv(dev);
return (struct lowpan_dev_info *)lowpan_priv(dev)->priv;
}
int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);

4
net/ieee802154/6lowpan/core.c
View File

@@ -138,6 +138,8 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev,
/* Set the lowpan hardware address to the wpan hardware address. */
memcpy(dev->dev_addr, real_dev->dev_addr, IEEE802154_ADDR_LEN);
lowpan_netdev_setup(dev, LOWPAN_LLTYPE_IEEE802154);
ret = register_netdevice(dev);
if (ret >= 0) {
real_dev->ieee802154_ptr->lowpan_dev = dev;
@@ -162,7 +164,7 @@ static void lowpan_dellink(struct net_device *dev, struct list_head *head)
static struct rtnl_link_ops lowpan_link_ops __read_mostly = {
.kind = "lowpan",
.priv_size = sizeof(struct lowpan_dev_info),
.priv_size = LOWPAN_PRIV_SIZE(sizeof(struct lowpan_dev_info)),
.setup = lowpan_setup,
.newlink = lowpan_newlink,
.dellink = lowpan_dellink,