Commit 963891ac authored by Ricardo Labiaga's avatar Ricardo Labiaga Committed by Benny Halevy
Browse files

nfs41: Backchannel: New find_client_with_session() 



Finds the 'struct nfs_client' that matches the server's address, major
version number, and session ID.

Signed-off-by: default avatarRicardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
parent f8625a6a

fs/nfs/callback_proc.c

+36 −0
Original line number Diff line number Diff line
@@ -104,6 +104,42 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) 


#if defined(CONFIG_NFS_V4_1)



/*

 * Returns a pointer to a held 'struct nfs_client' that matches the server's

 * address, major version number, and session ID.  It is the caller's

 * responsibility to release the returned reference.

 *

 * Returns NULL if there are no connections with sessions, or if no session

 * matches the one of interest.

 */

 static struct nfs_client *find_client_with_session(

	const struct sockaddr *addr, u32 nfsversion,

	struct nfs4_sessionid *sessionid)

{

	struct nfs_client *clp;



	clp = nfs_find_client(addr, 4);

	if (clp == NULL)

		return NULL;



	do {

		struct nfs_client *prev = clp;



		if (clp->cl_session != NULL) {

			if (memcmp(clp->cl_session->sess_id.data,

					sessionid->data,

					NFS4_MAX_SESSIONID_LEN) == 0) {

				/* Returns a held reference to clp */

				return clp;

			}

		}

		clp = nfs_find_client_next(prev);

		nfs_put_client(prev);

	} while (clp != NULL);



	return NULL;

}



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

/* FIXME: referring calls should be processed */

unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,