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nfsd4: use client pointer to backchannel session 

Instead of copying the sessionid, use the new cl_cb_session pointer,
which indicates which session we're using for the backchannel.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
J. Bruce Fields 2010-06-14 17:49:37 -04:00 committed by J. Bruce Fields
parent edd7678663
commit 90c8145bb6
3 changed files with 6 additions and 8 deletions
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9
fs/nfsd/nfs4callback.c
View File

@ -251,6 +251,7 @@ encode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb,
struct nfs4_cb_compound_hdr *hdr)
{
__be32 *p;
struct nfsd4_session *ses = cb->cb_clp->cl_cb_session;
if (hdr->minorversion == 0)
return;
@ -258,7 +259,7 @@ encode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb,
RESERVE_SPACE(1 + NFS4_MAX_SESSIONID_LEN + 20);
WRITE32(OP_CB_SEQUENCE);
WRITEMEM(cb->cb_clp->cl_sessionid.data, NFS4_MAX_SESSIONID_LEN);
WRITEMEM(ses->se_sessionid.data, NFS4_MAX_SESSIONID_LEN);
WRITE32(cb->cb_clp->cl_cb_seq_nr);
WRITE32(0); /* slotid, always 0 */
WRITE32(0); /* highest slotid always 0 */
@ -341,6 +342,7 @@ static int
decode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb,
struct rpc_rqst *rqstp)
{
struct nfsd4_session *ses = cb->cb_clp->cl_cb_session;
struct nfs4_sessionid id;
int status;
u32 dummy;
@ -362,8 +364,7 @@ decode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb,
READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
memcpy(id.data, p, NFS4_MAX_SESSIONID_LEN);
p += XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN);
if (memcmp(id.data, cb->cb_clp->cl_sessionid.data,
NFS4_MAX_SESSIONID_LEN)) {
if (memcmp(id.data, ses->se_sessionid.data, NFS4_MAX_SESSIONID_LEN)) {
dprintk("%s Invalid session id\n", __func__);
goto out;
}
@ -587,7 +588,7 @@ void nfsd4_probe_callback(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
static int nfsd41_cb_setup_sequence(struct nfs4_client *clp,
struct rpc_task *task)
{
u32 *ptr = (u32 *)clp->cl_sessionid.data;
u32 *ptr = (u32 *)clp->cl_cb_session->se_sessionid.data;
int status = 0;
dprintk("%s: %u:%u:%u:%u\n", __func__,

4
fs/nfsd/nfs4state.c
View File

@ -753,8 +753,6 @@ static __be32 alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp
new->se_client = clp;
gen_sessionid(new);
memcpy(clp->cl_sessionid.data, new->se_sessionid.data,
NFS4_MAX_SESSIONID_LEN);
INIT_LIST_HEAD(&new->se_conns);
@ -1544,7 +1542,7 @@ nfsd4_create_session(struct svc_rqst *rqstp,
if (status)
goto out;
memcpy(cr_ses->sessionid.data, conf->cl_sessionid.data,
memcpy(cr_ses->sessionid.data, conf->cl_cb_session->se_sessionid.data,
NFS4_MAX_SESSIONID_LEN);
cr_ses->seqid = cs_slot->sl_seqid;

1
fs/nfsd/state.h
View File

@ -243,7 +243,6 @@ struct nfs4_client {
struct list_head cl_sessions;
struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */
u32 cl_exchange_flags;
struct nfs4_sessionid cl_sessionid;
/* number of rpc's in progress over an associated session: */
atomic_t cl_refcount;