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   1 #ifndef __NET_FRAG_H__
   2 #define __NET_FRAG_H__
   3
   4 struct inet_frag_queue {
   5         struct hlist_node       list;
   6         struct list_head        lru_list;   /* lru list member */
   7         spinlock_t              lock;
   8         atomic_t                refcnt;
   9         struct timer_list       timer;      /* when will this queue expire? */
  10         struct sk_buff          *fragments; /* list of received fragments */
  11         ktime_t                 stamp;
  12         int                     len;        /* total length of orig datagram */
  13         int                     meat;
  14         __u8                    last_in;    /* first/last segment arrived? */
  15
  16 #define COMPLETE                4
  17 #define FIRST_IN                2
  18 #define LAST_IN                 1
  19 };
  20
  21 #define INETFRAGS_HASHSZ                64
  22
  23 struct inet_frags {
  24         struct list_head        lru_list;
  25         struct hlist_head       hash[INETFRAGS_HASHSZ];
  26         rwlock_t                lock;
  27         u32                     rnd;
  28         int                     nqueues;
  29         atomic_t                mem;
  30         struct timer_list       secret_timer;
  31 };
  32
  33 void inet_frags_init(struct inet_frags *);
  34 void inet_frags_fini(struct inet_frags *);
  35
  36 #endif