From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
Be a little more concise.
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 67 +++++++++------------------------------------------
1 file changed, 11 insertions(+), 56 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 3dc0289..4ce1045 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2169,17 +2169,13 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (status)
return status;
- /*
- * XXX The Duplicate Request Cache (DRC) has been checked (??)
- * We get here on a DRC miss.
- */
-
strhashval = clientstr_hashval(dname);
+ /* Cases below refer to rfc 3530 section 14.2.33: */
nfs4_lock_state();
conf = find_confirmed_client_by_str(dname, strhashval);
if (conf) {
- /* RFC 3530 14.2.33 CASE 0: */
+ /* case 0: */
status = nfserr_clid_inuse;
if (clp_used_exchangeid(conf))
goto out;
@@ -2192,18 +2188,10 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
}
}
- /*
- * section 14.2.33 of RFC 3530 (under the heading "IMPLEMENTATION")
- * has a description of SETCLIENTID request processing consisting
- * of 5 bullet points, labeled as CASE0 - CASE4 below.
- */
unconf = find_unconfirmed_client_by_str(dname, strhashval);
status = nfserr_jukebox;
if (!conf) {
- /*
- * RFC 3530 14.2.33 CASE 4:
- * placed first, because it is the normal case
- */
+ /* case 4: placed first, because it's the normal case */
if (unconf)
expire_client(unconf);
new = create_client(clname, dname, rqstp, &clverifier);
@@ -2211,10 +2199,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
gen_clid(new);
} else if (same_verf(&conf->cl_verifier, &clverifier)) {
- /*
- * RFC 3530 14.2.33 CASE 1:
- * probable callback update
- */
+ /* case 1: probable callback update */
if (unconf) {
/* Note this is removing unconfirmed {*x***},
* which is stronger than RFC recommended {vxc**}.
@@ -2228,21 +2213,13 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
copy_clid(new, conf);
} else if (!unconf) {
- /*
- * RFC 3530 14.2.33 CASE 2:
- * probable client reboot; state will be removed if
- * confirmed.
- */
+ /* case 2: probable client reboot: */
new = create_client(clname, dname, rqstp, &clverifier);
if (new == NULL)
goto out;
gen_clid(new);
} else {
- /*
- * RFC 3530 14.2.33 CASE 3:
- * probable client reboot; state will be removed if
- * confirmed.
- */
+ /* case 3: probable client reboot: */
expire_client(unconf);
new = create_client(clname, dname, rqstp, &clverifier);
if (new == NULL)
@@ -2266,11 +2243,6 @@ out:
}
-/*
- * Section 14.2.34 of RFC 3530 (under the heading "IMPLEMENTATION") has
- * a description of SETCLIENTID_CONFIRM request processing consisting of 4
- * bullets, labeled as CASE1 - CASE4 below.
- */
__be32
nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
@@ -2293,17 +2265,10 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
conf = find_confirmed_client(clid);
unconf = find_unconfirmed_client(clid);
- /*
- * section 14.2.34 of RFC 3530 has a description of
- * SETCLIENTID_CONFIRM request processing consisting
- * of 4 bullet points, labeled as CASE1 - CASE4 below.
- */
+ /* cases below refer to rfc 3530 section 14.2.34: */
status = nfserr_clid_inuse;
if (conf && unconf && same_verf(&confirm, &unconf->cl_confirm)) {
- /*
- * RFC 3530 14.2.34 CASE 1:
- * callback update
- */
+ /* case 1: callback update */
if (!same_creds(&conf->cl_cred, &unconf->cl_cred))
status = nfserr_clid_inuse;
else {
@@ -2313,21 +2278,14 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
status = nfs_ok;
}
} else if (conf && !unconf) {
- /*
- * RFC 3530 14.2.34 CASE 2:
- * probable retransmitted request; play it safe and
- * do nothing.
- */
+ /* case 2: probable retransmit: */
if (!same_creds(&conf->cl_cred, &rqstp->rq_cred))
status = nfserr_clid_inuse;
else
status = nfs_ok;
} else if (!conf && unconf
&& same_verf(&unconf->cl_confirm, &confirm)) {
- /*
- * RFC 3530 14.2.34 CASE 3:
- * Normal case; new or rebooted client:
- */
+ /* case 3: normal case; new or rebooted client */
if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred)) {
status = nfserr_clid_inuse;
} else {
@@ -2346,10 +2304,7 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
}
} else if ((!conf || !same_verf(&conf->cl_confirm, &confirm))
&& (!unconf || !same_verf(&unconf->cl_confirm, &confirm))) {
- /*
- * RFC 3530 14.2.34 CASE 4:
- * Client probably hasn't noticed that we rebooted yet.
- */
+ /* case 4: client hasn't noticed we rebooted yet? */
status = nfserr_stale_clientid;
}
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
