From 63db46328a9854d0adcde69871a28d94e0fc7746 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Fri, 18 May 2012 21:54:19 -0400 Subject: nfsd4: setclientid/confirm comment cleanup Be a little more concise. Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 67 +++++++++-------------------------------------------- 1 file changed, 11 insertions(+), 56 deletions(-) (limited to 'fs/nfsd') diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 7bb4e88f33c..dd4c6d36534 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; } -- cgit v1.2.3-18-g5258