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nfsd41: sessions basic data types 

This patch provides basic data structures representing the nfs41
sessions and slots, plus helpers for keeping a reference count
on the session and freeing it.

Note that our server only support a headerpadsz of 0 and
it ignores backchannel attributes at the moment.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41: remove headerpadsz from channel attributes]
[nfsd41: embed nfsd4_channel in nfsd4_session]
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41: use bool inuse for slot state]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41 remove sl_session from nfsd4_slot]
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Andy Adamson 2009-04-03 08:27:43 +03:00 committed by J. Bruce Fields
parent 10add806c3
commit 7116ed6b99
2 changed files with 51 additions and 0 deletions
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18
fs/nfsd/nfs4state.c
View File

@ -382,6 +382,24 @@ static void release_openowner(struct nfs4_stateowner *sop)
nfs4_put_stateowner(sop);
}
static void
release_session(struct nfsd4_session *ses)
{
list_del(&ses->se_hash);
list_del(&ses->se_perclnt);
nfsd4_put_session(ses);
}
void
free_session(struct kref *kref)
{
struct nfsd4_session *ses;
ses = container_of(kref, struct nfsd4_session, se_ref);
kfree(ses->se_slots);
kfree(ses);
}
static inline void
renew_client(struct nfs4_client *clp)
{

33
include/linux/nfsd/state.h
View File

@ -99,6 +99,39 @@ struct nfs4_callback {
struct rpc_clnt * cb_client;
};
struct nfsd4_slot {
bool sl_inuse;
u32 sl_seqid;
};
struct nfsd4_session {
struct kref se_ref;
struct list_head se_hash; /* hash by sessionid */
struct list_head se_perclnt;
u32 se_flags;
struct nfs4_client *se_client; /* for expire_client */
struct nfs4_sessionid se_sessionid;
u32 se_fmaxreq_sz;
u32 se_fmaxresp_sz;
u32 se_fmaxresp_cached;
u32 se_fmaxops;
u32 se_fnumslots;
struct nfsd4_slot *se_slots; /* forward channel slots */
};
static inline void
nfsd4_put_session(struct nfsd4_session *ses)
{
extern void free_session(struct kref *kref);
kref_put(&ses->se_ref, free_session);
}
static inline void
nfsd4_get_session(struct nfsd4_session *ses)
{
kref_get(&ses->se_ref);
}
#define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */
/*