1 #ifndef __IEEE802154_6LOWPAN_I_H__
2 #define __IEEE802154_6LOWPAN_I_H__
3 
4 #include <linux/list.h>
5 
6 #include <net/ieee802154_netdev.h>
7 #include <net/inet_frag.h>
8 #include <net/6lowpan.h>
9 
10 typedef unsigned __bitwise__ lowpan_rx_result;
11 #define RX_CONTINUE		((__force lowpan_rx_result) 0u)
12 #define RX_DROP_UNUSABLE	((__force lowpan_rx_result) 1u)
13 #define RX_DROP			((__force lowpan_rx_result) 2u)
14 #define RX_QUEUED		((__force lowpan_rx_result) 3u)
15 
16 #define LOWPAN_DISPATCH_FRAG1           0xc0
17 #define LOWPAN_DISPATCH_FRAGN           0xe0
18 
19 struct lowpan_create_arg {
20 	u16 tag;
21 	u16 d_size;
22 	const struct ieee802154_addr *src;
23 	const struct ieee802154_addr *dst;
24 };
25 
26 /* Equivalent of ipv4 struct ip
27  */
28 struct lowpan_frag_queue {
29 	struct inet_frag_queue	q;
30 
31 	u16			tag;
32 	u16			d_size;
33 	struct ieee802154_addr	saddr;
34 	struct ieee802154_addr	daddr;
35 };
36 
37 static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a)
38 {
39 	switch (a->mode) {
40 	case IEEE802154_ADDR_LONG:
41 		return (((__force u64)a->extended_addr) >> 32) ^
42 			(((__force u64)a->extended_addr) & 0xffffffff);
43 	case IEEE802154_ADDR_SHORT:
44 		return (__force u32)(a->short_addr);
45 	default:
46 		return 0;
47 	}
48 }
49 
50 /* private device info */
51 struct lowpan_dev_info {
52 	struct net_device	*wdev; /* wpan device ptr */
53 	u16			fragment_tag;
54 };
55 
56 static inline struct
57 lowpan_dev_info *lowpan_dev_info(const struct net_device *dev)
58 {
59 	return (struct lowpan_dev_info *)lowpan_priv(dev)->priv;
60 }
61 
62 int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);
63 void lowpan_net_frag_exit(void);
64 int lowpan_net_frag_init(void);
65 
66 void lowpan_rx_init(void);
67 void lowpan_rx_exit(void);
68 
69 int lowpan_header_create(struct sk_buff *skb, struct net_device *dev,
70 			 unsigned short type, const void *_daddr,
71 			 const void *_saddr, unsigned int len);
72 netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev);
73 
74 int lowpan_iphc_decompress(struct sk_buff *skb);
75 lowpan_rx_result lowpan_rx_h_ipv6(struct sk_buff *skb);
76 
77 #endif /* __IEEE802154_6LOWPAN_I_H__ */
78