04128f233f
Some sysctl variables are used to tune the frag queues management and it will be useful to work with them in a common way in the future, so move them into one structure, moreover they are the same for all the frag management codes. I don't place them in the existing inet_frags object, introduced in the previous patch for two reasons: 1. to keep them in the __read_mostly section; 2. not to export the whole inet_frags objects outside. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
45 lines
961 B
C
45 lines
961 B
C
#ifndef __NET_FRAG_H__
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#define __NET_FRAG_H__
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struct inet_frag_queue {
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struct hlist_node list;
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struct list_head lru_list; /* lru list member */
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spinlock_t lock;
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atomic_t refcnt;
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struct timer_list timer; /* when will this queue expire? */
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struct sk_buff *fragments; /* list of received fragments */
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ktime_t stamp;
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int len; /* total length of orig datagram */
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int meat;
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__u8 last_in; /* first/last segment arrived? */
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#define COMPLETE 4
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#define FIRST_IN 2
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#define LAST_IN 1
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};
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#define INETFRAGS_HASHSZ 64
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struct inet_frags_ctl {
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int high_thresh;
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int low_thresh;
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int timeout;
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int secret_interval;
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};
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struct inet_frags {
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struct list_head lru_list;
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struct hlist_head hash[INETFRAGS_HASHSZ];
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rwlock_t lock;
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u32 rnd;
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int nqueues;
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atomic_t mem;
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struct timer_list secret_timer;
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struct inet_frags_ctl *ctl;
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};
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void inet_frags_init(struct inet_frags *);
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void inet_frags_fini(struct inet_frags *);
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#endif
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