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nfsd4: move callback setup into session init code 

The backchannel should  be associated with a session, it isn't really
global to the client.

We do, however, want a pointer global to the client which tracks which
session we're currently using for client-based callbacks.

This is a first step in that direction; for now, just reshuffling of
code with no significant change in behavior.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
J. Bruce Fields 2010-06-14 22:26:31 -04:00 committed by J. Bruce Fields
parent cd5b814458
commit edd7678663
2 changed files with 15 additions and 15 deletions
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29
fs/nfsd/nfs4state.c
View File

@ -771,6 +771,19 @@ static __be32 alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp
free_session(&new->se_ref);
return nfserr_jukebox;
}
if (!clp->cl_cb_session && (cses->flags & SESSION4_BACK_CHAN)) {
struct sockaddr *sa = svc_addr(rqstp);
clp->cl_cb_session = new;
clp->cl_cb_conn.cb_xprt = rqstp->rq_xprt;
svc_xprt_get(rqstp->rq_xprt);
rpc_copy_addr((struct sockaddr *)&clp->cl_cb_conn.cb_addr, sa);
clp->cl_cb_conn.cb_addrlen = svc_addr_len(sa);
clp->cl_cb_conn.cb_minorversion = 1;
clp->cl_cb_conn.cb_prog = cses->callback_prog;
clp->cl_cb_seq_nr = 1;
nfsd4_probe_callback(clp, &clp->cl_cb_conn);
}
return nfs_ok;
}
@ -1045,7 +1058,7 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
clp->cl_flavor = rqstp->rq_flavor;
copy_cred(&clp->cl_cred, &rqstp->rq_cred);
gen_confirm(clp);
clp->cl_cb_session = NULL;
return clp;
}
@ -1515,20 +1528,6 @@ nfsd4_create_session(struct svc_rqst *rqstp,
cs_slot->sl_seqid++; /* from 0 to 1 */
move_to_confirmed(unconf);
if (cr_ses->flags & SESSION4_BACK_CHAN) {
unconf->cl_cb_conn.cb_xprt = rqstp->rq_xprt;
svc_xprt_get(rqstp->rq_xprt);
rpc_copy_addr(
(struct sockaddr *)&unconf->cl_cb_conn.cb_addr,
sa);
unconf->cl_cb_conn.cb_addrlen = svc_addr_len(sa);
unconf->cl_cb_conn.cb_minorversion =
cstate->minorversion;
unconf->cl_cb_conn.cb_prog = cr_ses->callback_prog;
unconf->cl_cb_seq_nr = 1;
nfsd4_probe_callback(unconf, &unconf->cl_cb_conn);
}
conf = unconf;
} else {
status = nfserr_stale_clientid;

1
fs/nfsd/state.h
View File

@ -234,6 +234,7 @@ struct nfs4_client {
u32 cl_cb_ident;
atomic_t cl_cb_set;
struct nfsd4_callback cl_cb_null;
struct nfsd4_session *cl_cb_session;
/* for all client information that callback code might need: */
spinlock_t cl_lock;