Commit d49433e1 authored by Benny Halevy's avatar Benny Halevy
Browse files

nfs41: cb_sequence proc implementation 



Currently, just free up any referring calls information.

Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
[nfs41: fix csr_{,target}highestslotid]
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
parent 2d9b9ec3

fs/nfs/callback.h

+4 −0
Original line number Diff line number Diff line
@@ -103,6 +103,9 @@ struct cb_sequenceres { 
	uint32_t			csr_target_highestslotid;

};



extern unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,

				       struct cb_sequenceres *res);



#endif /* CONFIG_NFS_V4_1 */



extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res);
@@ -119,6 +122,7 @@ extern void nfs_callback_down(int minorversion); 
 * of slots for the backchannel.

 */

#define NFS41_BC_MIN_CALLBACKS 1

#define NFS41_BC_MAX_CALLBACKS 1



extern unsigned int nfs_callback_set_tcpport;

extern unsigned short nfs_callback_tcpport;

fs/nfs/callback_proc.c

+28 −0
Original line number Diff line number Diff line
@@ -101,3 +101,31 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) 
	dprintk("%s: exit with status = %d\n", __func__, ntohl(res));

	return res;

}



#if defined(CONFIG_NFS_V4_1)



/* FIXME: validate args->cbs_{sequence,slot}id */

/* FIXME: referring calls should be processed */

unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,

				struct cb_sequenceres *res)

{

	int i;

	unsigned status = 0;



	for (i = 0; i < args->csa_nrclists; i++)

		kfree(args->csa_rclists[i].rcl_refcalls);

	kfree(args->csa_rclists);



	memcpy(&res->csr_sessionid, &args->csa_sessionid,

	       sizeof(res->csr_sessionid));

	res->csr_sequenceid = args->csa_sequenceid;

	res->csr_slotid = args->csa_slotid;

	res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;

	res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;



	dprintk("%s: exit with status = %d\n", __func__, ntohl(status));

	res->csr_status = status;

	return status;

}



#endif /* CONFIG_NFS_V4_1 */