From patchwork Wed Apr 27 15:36:07 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Adamson X-Patchwork-Id: 8959291 Return-Path: X-Original-To: patchwork-linux-nfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 2D23DBF29F for ; Wed, 27 Apr 2016 15:37:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3FD8820263 for ; Wed, 27 Apr 2016 15:37:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 47B5420259 for ; Wed, 27 Apr 2016 15:37:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752776AbcD0Pgu (ORCPT ); Wed, 27 Apr 2016 11:36:50 -0400 Received: from mx143.netapp.com ([216.240.21.24]:3483 "EHLO mx143.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753394AbcD0Pgs (ORCPT ); Wed, 27 Apr 2016 11:36:48 -0400 X-IronPort-AV: E=Sophos;i="5.24,542,1455004800"; d="scan'208";a="111267004" Received: from vmwexchts01-prd.hq.netapp.com ([10.122.105.12]) by mx143-out.netapp.com with ESMTP; 27 Apr 2016 08:36:38 -0700 Received: from smtp1.corp.netapp.com (10.57.156.124) by VMWEXCHTS01-PRD.hq.netapp.com (10.122.105.12) with Microsoft SMTP Server id 15.0.1156.6; Wed, 27 Apr 2016 08:36:35 -0700 Received: from localhost.localdomain (andros-new.vpn.netapp.com [10.55.74.31]) by smtp1.corp.netapp.com (8.13.1/8.13.1/NTAP-1.6) with ESMTP id u3RFaXwX014459; Wed, 27 Apr 2016 08:36:38 -0700 (PDT) From: To: CC: , , Andy Adamson Subject: [PATCH Version 3 6/9] NFS refactor _nfs4_proc_exchange_id for session trunking Date: Wed, 27 Apr 2016 11:36:07 -0400 Message-ID: <1461771370-16375-7-git-send-email-andros@netapp.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1461771370-16375-1-git-send-email-andros@netapp.com> References: <1461771370-16375-1-git-send-email-andros@netapp.com> MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Andy Adamson Add an rpc_xprt parameter to test it's connection for session trunking Signed-off-by: Andy Adamson --- fs/nfs/nfs4proc.c | 34 ++++++++++++++++++++++++++++------ 1 file changed, 28 insertions(+), 6 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index da2aa2e..70537f0 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7024,7 +7024,7 @@ static int nfs4_sp4_select_mode(struct nfs_client *clp, * Wrapper for EXCHANGE_ID operation. */ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, - u32 sp4_how) + u32 sp4_how, struct rpc_xprt *xprt) { nfs4_verifier verifier; struct nfs41_exchange_id_args args = { @@ -7049,6 +7049,18 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, .rpc_resp = &res, .rpc_cred = cred, }; + struct rpc_task_setup task_setup_data = { + .rpc_client = clp->cl_rpcclient, + .rpc_xprt = xprt, + .callback_ops = &nfs4_proc_default_ops, + .rpc_message = &msg, + .flags = RPC_TASK_TIMEOUT, + }; + struct rpc_task *task; + + /* Do not run exchange_id against the established mount connection */ + if (xprt && xprt == rcu_access_pointer(clp->cl_rpcclient->cl_xprt)) + return 1; nfs4_init_boot_verifier(clp, &verifier); @@ -7096,11 +7108,17 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, goto out_impl_id; } - status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); + task = rpc_run_task(&task_setup_data); + if (!IS_ERR(task)) { + status = task->tk_status; + rpc_put_task(task); + } else + status = PTR_ERR(task); trace_nfs4_exchange_id(clp, status); if (status == 0) status = nfs4_check_cl_exchange_flags(res.flags); - + if (xprt) + goto session_trunk; if (status == 0) status = nfs4_sp4_select_mode(clp, &res.state_protect); @@ -7138,7 +7156,6 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, res.server_scope = NULL; } } - out_impl_id: kfree(res.impl_id); out_server_scope: @@ -7154,6 +7171,11 @@ out: clp->cl_implid->date.nseconds); dprintk("NFS reply exchange_id: %d\n", status); return status; + +session_trunk: + if (status == 0) + status = nfs4_detect_session_trunking(clp, &res); + goto out_impl_id; } /* @@ -7176,13 +7198,13 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) /* try SP4_MACH_CRED if krb5i/p */ if (authflavor == RPC_AUTH_GSS_KRB5I || authflavor == RPC_AUTH_GSS_KRB5P) { - status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); + status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED, NULL); if (!status) return 0; } /* try SP4_NONE */ - return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); + return _nfs4_proc_exchange_id(clp, cred, SP4_NONE, NULL); } static int _nfs4_proc_destroy_clientid(struct nfs_client *clp,