7 struct list_head lru_list;
15 struct inet_frag_queue {
16 struct hlist_node list;
17 struct netns_frags *net;
18 struct list_head lru_list; /* lru list member */
21 struct timer_list timer; /* when will this queue expire? */
22 struct sk_buff *fragments; /* list of received fragments */
23 struct sk_buff *fragments_tail;
25 int len; /* total length of orig datagram */
27 __u8 last_in; /* first/last segment arrived? */
29 #define INET_FRAG_COMPLETE 4
30 #define INET_FRAG_FIRST_IN 2
31 #define INET_FRAG_LAST_IN 1
34 #define INETFRAGS_HASHSZ 64
37 * max_depth = default ipfrag_high_thresh / INETFRAGS_HASHSZ /
38 * rounded up (SKB_TRUELEN(0) + sizeof(struct ipq or
41 #define INETFRAGS_MAXDEPTH 128
44 struct hlist_head hash[INETFRAGS_HASHSZ];
49 struct timer_list secret_timer;
51 unsigned int (*hashfn)(struct inet_frag_queue *);
52 void (*constructor)(struct inet_frag_queue *q,
54 void (*destructor)(struct inet_frag_queue *);
55 void (*skb_free)(struct sk_buff *);
56 int (*match)(struct inet_frag_queue *q,
58 void (*frag_expire)(unsigned long data);
61 void inet_frags_init(struct inet_frags *);
62 void inet_frags_fini(struct inet_frags *);
64 void inet_frags_init_net(struct netns_frags *nf);
65 void inet_frags_exit_net(struct netns_frags *nf, struct inet_frags *f);
67 void inet_frag_kill(struct inet_frag_queue *q, struct inet_frags *f);
68 void inet_frag_destroy(struct inet_frag_queue *q,
69 struct inet_frags *f, int *work);
70 int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f);
71 struct inet_frag_queue *inet_frag_find(struct netns_frags *nf,
72 struct inet_frags *f, void *key, unsigned int hash)
74 void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q,
77 static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f)
79 if (atomic_dec_and_test(&q->refcnt))
80 inet_frag_destroy(q, f, NULL);