b72f6f51dc
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>
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
#ifndef __IEEE802154_6LOWPAN_I_H__
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#define __IEEE802154_6LOWPAN_I_H__
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#include <linux/list.h>
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#include <net/ieee802154_netdev.h>
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#include <net/inet_frag.h>
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#include <net/6lowpan.h>
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struct lowpan_create_arg {
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u16 tag;
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u16 d_size;
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const struct ieee802154_addr *src;
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const struct ieee802154_addr *dst;
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};
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/* Equivalent of ipv4 struct ip
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*/
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struct lowpan_frag_queue {
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struct inet_frag_queue q;
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u16 tag;
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u16 d_size;
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struct ieee802154_addr saddr;
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struct ieee802154_addr daddr;
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};
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static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a)
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{
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switch (a->mode) {
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case IEEE802154_ADDR_LONG:
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return (((__force u64)a->extended_addr) >> 32) ^
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(((__force u64)a->extended_addr) & 0xffffffff);
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case IEEE802154_ADDR_SHORT:
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return (__force u32)(a->short_addr);
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default:
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return 0;
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}
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}
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/* private device info */
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struct lowpan_dev_info {
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struct net_device *real_dev; /* real WPAN device ptr */
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u16 fragment_tag;
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};
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static inline struct
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lowpan_dev_info *lowpan_dev_info(const struct net_device *dev)
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{
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return (struct lowpan_dev_info *)lowpan_priv(dev)->priv;
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}
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int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);
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void lowpan_net_frag_exit(void);
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int lowpan_net_frag_init(void);
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void lowpan_rx_init(void);
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void lowpan_rx_exit(void);
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int lowpan_header_create(struct sk_buff *skb, struct net_device *dev,
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unsigned short type, const void *_daddr,
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const void *_saddr, unsigned int len);
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netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev);
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#endif /* __IEEE802154_6LOWPAN_I_H__ */
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