[mirror_ubuntu-bionic-kernel.git] / net / ieee802154 / reassembly.h

#ifndef __IEEE802154_6LOWPAN_REASSEMBLY_H__
#define __IEEE802154_6LOWPAN_REASSEMBLY_H__

#include <net/inet_frag.h>

struct lowpan_create_arg {
	__be16 tag;
	u16 d_size;
	const struct ieee802154_addr_sa *src;
	const struct ieee802154_addr_sa *dst;
};

/* Equivalent of ipv4 struct ip
 */
struct lowpan_frag_queue {
	struct inet_frag_queue	q;

	__be16			tag;
	u16			d_size;
	struct ieee802154_addr_sa	saddr;
	struct ieee802154_addr_sa	daddr;
};

static inline u32 ieee802154_addr_hash(const struct ieee802154_addr_sa *a)
{
	switch (a->addr_type) {
	case IEEE802154_ADDR_LONG:
		return (__force u32)((((u32 *)a->hwaddr))[0] ^
				      ((u32 *)(a->hwaddr))[1]);
	case IEEE802154_ADDR_SHORT:
		return (__force u32)(a->short_addr);
	default:
		return 0;
	}
}

static inline bool
ieee802154_addr_addr_equal(const struct ieee802154_addr_sa *a1,
			   const struct ieee802154_addr_sa *a2)
{
	if (a1->pan_id != a2->pan_id)
		return false;

	if (a1->addr_type != a2->addr_type)
		return false;

	switch (a1->addr_type) {
	case IEEE802154_ADDR_LONG:
		if (memcmp(a1->hwaddr, a2->hwaddr, IEEE802154_ADDR_LEN))
			return false;
		break;
	case IEEE802154_ADDR_SHORT:
		if (a1->short_addr != a2->short_addr)
			return false;
		break;
	default:
		return false;
	}

	return true;
}

int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);
void lowpan_net_frag_exit(void);
int lowpan_net_frag_init(void);

#endif /* __IEEE802154_6LOWPAN_REASSEMBLY_H__ */
Commit	Line	Data
7240cdec AA	1	#ifndef __IEEE802154_6LOWPAN_REASSEMBLY_H__
	2	#define __IEEE802154_6LOWPAN_REASSEMBLY_H__
	3
	4	#include <net/inet_frag.h>
	5
	6	struct lowpan_create_arg {
	7	__be16 tag;
	8	u16 d_size;
376b7bd3 PB	9	const struct ieee802154_addr_sa *src;
376b7bd3 PB	10	const struct ieee802154_addr_sa *dst;
7240cdec AA	11	};
	12
	13	/* Equivalent of ipv4 struct ip
	14	*/
	15	struct lowpan_frag_queue {
	16	struct inet_frag_queue q;
	17
	18	__be16 tag;
	19	u16 d_size;
376b7bd3 PB	20	struct ieee802154_addr_sa saddr;
376b7bd3 PB	21	struct ieee802154_addr_sa daddr;
7240cdec AA	22	};
7240cdec AA	23
376b7bd3	24	static inline u32 ieee802154_addr_hash(const struct ieee802154_addr_sa *a)
7240cdec AA	25	{
	26	switch (a->addr_type) {
	27	case IEEE802154_ADDR_LONG:
	28	return (__force u32)((((u32 *)a->hwaddr))[0] ^
	29	((u32 *)(a->hwaddr))[1]);
	30	case IEEE802154_ADDR_SHORT:
	31	return (__force u32)(a->short_addr);
	32	default:
	33	return 0;
	34	}
	35	}
	36
376b7bd3 PB	37	static inline bool
	38	ieee802154_addr_addr_equal(const struct ieee802154_addr_sa *a1,
	39	const struct ieee802154_addr_sa *a2)
7240cdec AA	40	{
	41	if (a1->pan_id != a2->pan_id)
	42	return false;
	43
	44	if (a1->addr_type != a2->addr_type)
	45	return false;
	46
	47	switch (a1->addr_type) {
	48	case IEEE802154_ADDR_LONG:
	49	if (memcmp(a1->hwaddr, a2->hwaddr, IEEE802154_ADDR_LEN))
	50	return false;
	51	break;
	52	case IEEE802154_ADDR_SHORT:
	53	if (a1->short_addr != a2->short_addr)
	54	return false;
	55	break;
	56	default:
	57	return false;
	58	}
	59
	60	return true;
	61	}
	62
	63	int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);
	64	void lowpan_net_frag_exit(void);
	65	int lowpan_net_frag_init(void);
	66
	67	#endif /* __IEEE802154_6LOWPAN_REASSEMBLY_H__ */