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9#ifndef NFSCACHE_H
10#define NFSCACHE_H
11
12#include <linux/sunrpc/svc.h>
13#include "netns.h"
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21
22struct svc_cacherep {
23 struct {
24
25 __be32 k_xid;
26 __wsum k_csum;
27 u32 k_proc;
28 u32 k_prot;
29 u32 k_vers;
30 unsigned int k_len;
31 struct sockaddr_in6 k_addr;
32 } c_key;
33
34 struct rb_node c_node;
35 struct list_head c_lru;
36 unsigned char c_state,
37 c_type,
38 c_secure : 1;
39 unsigned long c_timestamp;
40 union {
41 struct kvec u_vec;
42 __be32 u_status;
43 } c_u;
44};
45
46#define c_replvec c_u.u_vec
47#define c_replstat c_u.u_status
48
49
50enum {
51 RC_UNUSED,
52 RC_INPROG,
53 RC_DONE
54};
55
56
57enum {
58 RC_DROPIT,
59 RC_REPLY,
60 RC_DOIT
61};
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67
68
69enum {
70 RC_NOCACHE,
71 RC_REPLSTAT,
72 RC_REPLBUFF,
73};
74
75
76#define RC_EXPIRE (120 * HZ)
77
78
79#define RC_CSUMLEN (256U)
80
81int nfsd_drc_slab_create(void);
82void nfsd_drc_slab_free(void);
83int nfsd_reply_cache_init(struct nfsd_net *);
84void nfsd_reply_cache_shutdown(struct nfsd_net *);
85int nfsd_cache_lookup(struct svc_rqst *);
86void nfsd_cache_update(struct svc_rqst *, int, __be32 *);
87int nfsd_reply_cache_stats_open(struct inode *, struct file *);
88
89#endif
90