Commit 7116ed6b authored by Andy Adamson's avatar Andy Adamson Committed by J. Bruce Fields
Browse files

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: default avatarBenny Halevy <bhalevy@panasas.com>
[nfsd41: remove headerpadsz from channel attributes]
[nfsd41: embed nfsd4_channel in nfsd4_session]
Signed-off-by: default avatarAndy Adamson <andros@netapp.com>
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
[nfsd41: use bool inuse for slot state]
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
[nfsd41 remove sl_session from nfsd4_slot]
Signed-off-by: default avatarAndy Adamson <andros@netapp.com>
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
parent 10add806

fs/nfsd/nfs4state.c

+18 −0
Original line number Diff line number Diff line
@@ -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)

{

include/linux/nfsd/state.h

+33 −0
Original line number Diff line number Diff line
@@ -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' */



/*

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