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SUNRPC: Add a callback to initialise server requests

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Add a callback to help initialise server requests before they are
processed. This will allow us to clean up the NFS server version
support, and to make it container safe.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Trond Myklebust
2019-04-09 11:46:15 -04:00
committed by J. Bruce Fields
parent 83dd59a0b9
commit 8e5b67731d
5 changed files with 98 additions and 39 deletions
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16
include/linux/sunrpc/svc.h
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@@ -383,6 +383,16 @@ struct svc_deferred_req {
__be32 args[0];
};
struct svc_process_info {
union {
int (*dispatch)(struct svc_rqst *, __be32 *);
struct {
unsigned int lovers;
unsigned int hivers;
} mismatch;
};
};
/*
* List of RPC programs on the same transport endpoint
*/
@@ -397,6 +407,9 @@ struct svc_program {
char * pg_class; /* class name: services sharing authentication */
struct svc_stat * pg_stats; /* rpc statistics */
int (*pg_authenticate)(struct svc_rqst *);
__be32 (*pg_init_request)(struct svc_rqst *,
const struct svc_program *,
struct svc_process_info *);
};
/*
@@ -506,6 +519,9 @@ char *svc_fill_symlink_pathname(struct svc_rqst *rqstp,
struct kvec *first, void *p,
size_t total);
__be32 svc_return_autherr(struct svc_rqst *rqstp, __be32 auth_err);
__be32 svc_generic_init_request(struct svc_rqst *rqstp,
const struct svc_program *progp,
struct svc_process_info *procinfo);
#define RPC_MAX_ADDRBUFLEN (63U)