| #ifndef __IEEE802154_6LOWPAN_REASSEMBLY_H__ |
| #define __IEEE802154_6LOWPAN_REASSEMBLY_H__ |
| |
| #include <net/inet_frag.h> |
| #include <linux/spinlock.h> |
| |
| struct lowpan_create_arg { |
| __be16 tag; |
| u16 d_size; |
| const struct ieee802154_addr *src; |
| const struct ieee802154_addr *dst; |
| }; |
| |
| /* Equivalent of ipv4 struct ip |
| */ |
| struct lowpan_frag_queue { |
| struct inet_frag_queue q; |
| |
| __be16 tag; |
| u16 d_size; |
| struct ieee802154_addr saddr; |
| struct ieee802154_addr daddr; |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0) |
| spinlock_t lru_lock; |
| #endif |
| }; |
| |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0) |
| /* |
| * XXX: this is a *domain* specific inet_frag_lru_move backport, |
| * note the added lowpan_ prefix, this requires a respective patch |
| * which extends struct lowpan_frag_queue with an lru_lock and |
| * initializes it. We add this helper here to reduce the backport. |
| * There is no way to generalize the other changes in the patch. |
| */ |
| #define inet_frag_lru_move LINUX_BACKPORT(lowpan_inet_frag_lru_move) |
| static inline void inet_frag_lru_move(struct inet_frag_queue *q) |
| { |
| struct lowpan_frag_queue *fq; |
| |
| fq = container_of(q, struct lowpan_frag_queue, q); |
| |
| spin_lock(&fq->lru_lock); |
| list_move_tail(&q->lru_list, &q->net->lru_list); |
| spin_unlock(&fq->lru_lock); |
| } |
| #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0) */ |
| |
| static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a) |
| { |
| switch (a->mode) { |
| case IEEE802154_ADDR_LONG: |
| return (((__force u64)a->extended_addr) >> 32) ^ |
| (((__force u64)a->extended_addr) & 0xffffffff); |
| case IEEE802154_ADDR_SHORT: |
| return (__force u32)(a->short_addr); |
| default: |
| return 0; |
| } |
| } |
| |
| 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__ */ |