net/ieee802154/reassembly.h

   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;
   9         const struct ieee802154_addr *src;
  10         const struct ieee802154_addr *dst;
  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;
  20         struct ieee802154_addr  saddr;
  21         struct ieee802154_addr  daddr;
  22 };
  23
  24 static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a)
  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
  37 static inline bool ieee802154_addr_addr_equal(const struct ieee802154_addr *a1,
  38                                    const struct ieee802154_addr *a2)
  39 {
  40         if (a1->pan_id != a2->pan_id)
  41                 return false;
  42
  43         if (a1->addr_type != a2->addr_type)
  44                 return false;
  45
  46         switch (a1->addr_type) {
  47         case IEEE802154_ADDR_LONG:
  48                 if (memcmp(a1->hwaddr, a2->hwaddr, IEEE802154_ADDR_LEN))
  49                         return false;
  50                 break;
  51         case IEEE802154_ADDR_SHORT:
  52                 if (a1->short_addr != a2->short_addr)
  53                         return false;
  54                 break;
  55         default:
  56                 return false;
  57         }
  58
  59         return true;
  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 #endif /* __IEEE802154_6LOWPAN_REASSEMBLY_H__ */