From patchwork Mon May 9 19:36:39 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Lever III X-Patchwork-Id: 770372 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter2.kernel.org (8.14.4/8.14.3) with ESMTP id p49JZt5u031503 for ; Mon, 9 May 2011 19:36:44 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754109Ab1EITgn (ORCPT ); Mon, 9 May 2011 15:36:43 -0400 Received: from mail-yw0-f46.google.com ([209.85.213.46]:64535 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754072Ab1EITgn (ORCPT ); Mon, 9 May 2011 15:36:43 -0400 Received: by ywj3 with SMTP id 3so1917414ywj.19 for ; Mon, 09 May 2011 12:36:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:sender:from:subject:to:cc:date:message-id :in-reply-to:references:user-agent:mime-version:content-type :content-transfer-encoding; bh=B4nZZPc3LIr5LAeiiizly5o+zlCzbsvLf11igStMctA=; b=vTB8vTtKdGDOkX1M/kla4KxH0yU7SLXSc3BCBt4qiA+9iJAmZYr47XDlKU0VRJr/5h bsUVe4b+1/11WzD2I91Drr+VwIgIm8hWA/A+QA4MvgAANj+cqQVo7hVwWPB2IJyHHQN/ mnGcuSE9PAWvQVlryGouWvH09ywnjG30yJrSI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:from:subject:to:cc:date:message-id:in-reply-to:references :user-agent:mime-version:content-type:content-transfer-encoding; b=GP+ZUfplV0h4ev/PL+FS1aLcFEFTJBdV3PBwPF9pTQa9dU3f6VN9gleGaxU9FFldOA iWtXLk0AwMpob/ZZNvqodLjSJ4NsZJYoQpG0SEZL0rgHTJ09y2ha5tvTKQMaTB1tKrYK uDco/I7YNcqTi+2LBnQ9+lWo62KaYz4ywB5sc= Received: by 10.151.5.8 with SMTP id h8mr6489943ybi.240.1304969802394; Mon, 09 May 2011 12:36:42 -0700 (PDT) Received: from matisse.1015granger.net (adsl-99-26-161-222.dsl.sfldmi.sbcglobal.net [99.26.161.222]) by mx.google.com with ESMTPS id s18sm2797691ybg.10.2011.05.09.12.36.40 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 09 May 2011 12:36:41 -0700 (PDT) From: Chuck Lever Subject: [PATCH 03/16] SUNRPC: Move clnt->cl_server into struct rpc_xprt To: trond.myklebust@netapp.com Cc: linux-nfs@vger.kernel.org Date: Mon, 09 May 2011 15:36:39 -0400 Message-ID: <20110509193639.16568.89675.stgit@matisse.1015granger.net> In-Reply-To: <20110509192522.16568.59082.stgit@matisse.1015granger.net> References: <20110509192522.16568.59082.stgit@matisse.1015granger.net> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Mon, 09 May 2011 19:36:44 +0000 (UTC) From: Trond Myklebust When the cl_xprt field is updated, the cl_server field will also have to change. Since the contents of cl_server follow the remote endpoint of cl_xprt, just move that field to the rpc_xprt. Signed-off-by: Trond Myklebust [ cel: simplify check_gss_callback_principal(), whitespace changes ] Signed-off-by: Chuck Lever --- fs/nfs/callback.c | 3 +- include/linux/sunrpc/clnt.h | 3 +- include/linux/sunrpc/xprt.h | 2 + net/sunrpc/clnt.c | 74 ++++++++++++++++++++----------------------- net/sunrpc/rpc_pipe.c | 2 + net/sunrpc/rpcb_clnt.c | 9 +++-- net/sunrpc/xprt.c | 14 ++++++++ 7 files changed, 58 insertions(+), 49 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index e3d2942..1253540 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -332,7 +332,6 @@ void nfs_callback_down(int minorversion) int check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp) { - struct rpc_clnt *r = clp->cl_rpcclient; char *p = svc_gss_principal(rqstp); if (rqstp->rq_authop->flavour != RPC_AUTH_GSS) @@ -353,7 +352,7 @@ check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp) if (memcmp(p, "nfs@", 4) != 0) return 0; p += 4; - if (strcmp(p, r->cl_server) != 0) + if (strcmp(p, clp->cl_hostname) != 0) return 0; return 1; } diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 7a1d124..2eea0d7 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -42,7 +42,6 @@ struct rpc_clnt { cl_vers, /* RPC version number */ cl_maxproc; /* max procedure number */ - char * cl_server; /* server machine name */ char * cl_protname; /* protocol name */ struct rpc_auth * cl_auth; /* authenticator */ struct rpc_stat * cl_stats; /* per-program statistics */ @@ -116,7 +115,7 @@ struct rpc_create_args { size_t addrsize; struct sockaddr *saddress; const struct rpc_timeout *timeout; - char *servername; + const char *servername; struct rpc_program *program; u32 prognumber; /* overrides program->number */ u32 version; diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 81cce3b..5a75b4b 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -225,6 +225,7 @@ struct rpc_xprt { } stat; struct net *xprt_net; + const char *servername; const char *address_strings[RPC_DISPLAY_MAX]; }; @@ -254,6 +255,7 @@ struct xprt_create { struct sockaddr * srcaddr; /* optional local address */ struct sockaddr * dstaddr; /* remote peer address */ size_t addrlen; + const char * servername; struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */ }; diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 31ee4db..6479e1d 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -150,15 +150,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru struct rpc_clnt *clnt = NULL; struct rpc_auth *auth; int err; - size_t len; /* sanity check the name before trying to print it */ - err = -EINVAL; - len = strlen(args->servername); - if (len > RPC_MAXNETNAMELEN) - goto out_no_rpciod; - len++; - dprintk("RPC: creating %s client for %s (xprt %p)\n", program->name, args->servername, xprt); @@ -181,16 +174,6 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru goto out_err; clnt->cl_parent = clnt; - clnt->cl_server = clnt->cl_inline_name; - if (len > sizeof(clnt->cl_inline_name)) { - char *buf = kmalloc(len, GFP_KERNEL); - if (buf != NULL) - clnt->cl_server = buf; - else - len = sizeof(clnt->cl_inline_name); - } - strlcpy(clnt->cl_server, args->servername, len); - rcu_assign_pointer(clnt->cl_xprt, xprt); clnt->cl_procinfo = version->procs; clnt->cl_maxproc = version->nrprocs; @@ -259,8 +242,6 @@ out_no_path: out_no_principal: rpc_free_iostats(clnt->cl_metrics); out_no_stats: - if (clnt->cl_server != clnt->cl_inline_name) - kfree(clnt->cl_server); kfree(clnt); out_err: xprt_put(xprt); @@ -290,6 +271,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) .srcaddr = args->saddress, .dstaddr = args->address, .addrlen = args->addrsize, + .servername = args->servername, .bc_xprt = args->bc_xprt, }; char servername[48]; @@ -298,7 +280,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) * If the caller chooses not to specify a hostname, whip * up a string representation of the passed-in address. */ - if (args->servername == NULL) { + if (xprtargs.servername == NULL) { struct sockaddr_un *sun = (struct sockaddr_un *)args->address; struct sockaddr_in *sin = @@ -325,7 +307,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) * address family isn't recognized. */ return ERR_PTR(-EINVAL); } - args->servername = servername; + xprtargs.servername = servername; } xprt = xprt_create_transport(&xprtargs); @@ -467,8 +449,9 @@ EXPORT_SYMBOL_GPL(rpc_killall_tasks); */ void rpc_shutdown_client(struct rpc_clnt *clnt) { - dprintk("RPC: shutting down %s client for %s\n", - clnt->cl_protname, clnt->cl_server); + dprintk_rcu("RPC: shutting down %s client for %s\n", + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); while (!list_empty(&clnt->cl_tasks)) { rpc_killall_tasks(clnt); @@ -486,8 +469,9 @@ EXPORT_SYMBOL_GPL(rpc_shutdown_client); static void rpc_free_client(struct rpc_clnt *clnt) { - dprintk("RPC: destroying %s client for %s\n", - clnt->cl_protname, clnt->cl_server); + dprintk_rcu("RPC: destroying %s client for %s\n", + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); if (!IS_ERR(clnt->cl_path.dentry)) { rpc_remove_client_dir(clnt->cl_path.dentry); rpc_put_mount(); @@ -496,8 +480,6 @@ rpc_free_client(struct rpc_clnt *clnt) rpc_release_client(clnt->cl_parent); goto out_free; } - if (clnt->cl_server != clnt->cl_inline_name) - kfree(clnt->cl_server); out_free: rpc_unregister_client(clnt); rpc_free_iostats(clnt->cl_metrics); @@ -1645,8 +1627,11 @@ call_timeout(struct rpc_task *task) } if (RPC_IS_SOFT(task)) { if (clnt->cl_chatty) + rcu_read_lock(); printk(KERN_NOTICE "%s: server %s not responding, timed out\n", - clnt->cl_protname, clnt->cl_server); + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); + rcu_read_unlock(); if (task->tk_flags & RPC_TASK_TIMEOUT) rpc_exit(task, -ETIMEDOUT); else @@ -1656,9 +1641,13 @@ call_timeout(struct rpc_task *task) if (!(task->tk_flags & RPC_CALL_MAJORSEEN)) { task->tk_flags |= RPC_CALL_MAJORSEEN; - if (clnt->cl_chatty) + if (clnt->cl_chatty) { + rcu_read_lock(); printk(KERN_NOTICE "%s: server %s not responding, still trying\n", - clnt->cl_protname, clnt->cl_server); + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); + rcu_read_unlock(); + } } rpc_force_rebind(clnt); /* @@ -1688,9 +1677,13 @@ call_decode(struct rpc_task *task) task->tk_pid, task->tk_status); if (task->tk_flags & RPC_CALL_MAJORSEEN) { - if (clnt->cl_chatty) + if (clnt->cl_chatty) { + rcu_read_lock(); printk(KERN_NOTICE "%s: server %s OK\n", - clnt->cl_protname, clnt->cl_server); + clnt->cl_protname, + rcu_dereference(clnt->cl_xprt)->servername); + rcu_read_unlock(); + } task->tk_flags &= ~RPC_CALL_MAJORSEEN; } @@ -1841,8 +1834,11 @@ rpc_verify_header(struct rpc_task *task) task->tk_action = call_bind; goto out_retry; case RPC_AUTH_TOOWEAK: + rcu_read_lock(); printk(KERN_NOTICE "RPC: server %s requires stronger " - "authentication.\n", task->tk_client->cl_server); + "authentication.\n", + rcu_dereference(task->tk_client->cl_xprt)->servername); + rcu_read_unlock(); break; default: dprintk("RPC: %5u %s: unknown auth error: %x\n", @@ -1865,28 +1861,28 @@ rpc_verify_header(struct rpc_task *task) case RPC_SUCCESS: return p; case RPC_PROG_UNAVAIL: - dprintk("RPC: %5u %s: program %u is unsupported by server %s\n", + dprintk_rcu("RPC: %5u %s: program %u is unsupported by server %s\n", task->tk_pid, __func__, (unsigned int)task->tk_client->cl_prog, - task->tk_client->cl_server); + rcu_dereference(task->tk_client->cl_xprt)->servername); error = -EPFNOSUPPORT; goto out_err; case RPC_PROG_MISMATCH: - dprintk("RPC: %5u %s: program %u, version %u unsupported by " + dprintk_rcu("RPC: %5u %s: program %u, version %u unsupported by " "server %s\n", task->tk_pid, __func__, (unsigned int)task->tk_client->cl_prog, (unsigned int)task->tk_client->cl_vers, - task->tk_client->cl_server); + rcu_dereference(task->tk_client->cl_xprt)->servername); error = -EPROTONOSUPPORT; goto out_err; case RPC_PROC_UNAVAIL: - dprintk("RPC: %5u %s: proc %s unsupported by program %u, " + dprintk_rcu("RPC: %5u %s: proc %s unsupported by program %u, " "version %u on server %s\n", task->tk_pid, __func__, rpc_proc_name(task), task->tk_client->cl_prog, task->tk_client->cl_vers, - task->tk_client->cl_server); + rcu_dereference(task->tk_client->cl_xprt)->servername); error = -EOPNOTSUPP; goto out_err; case RPC_GARBAGE_ARGS: diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 47053e5..e7b12b5 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -361,7 +361,7 @@ rpc_show_info(struct seq_file *m, void *v) struct rpc_clnt *clnt = m->private; rcu_read_lock(); - seq_printf(m, "RPC server: %s\n", clnt->cl_server); + seq_printf(m, "RPC server: %s\n", rcu_dereference(clnt->cl_xprt)->servername); seq_printf(m, "service: %s (%d) version %d\n", clnt->cl_protname, clnt->cl_prog, clnt->cl_vers); seq_printf(m, "address: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_ADDR)); diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index a861e19..9fa4cb4 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -291,8 +291,9 @@ out: return result; } -static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr, - size_t salen, int proto, u32 version) +static struct rpc_clnt *rpcb_create(const char *hostname, + struct sockaddr *srvaddr, size_t salen, + int proto, u32 version) { struct rpc_create_args args = { .net = &init_net, @@ -614,7 +615,7 @@ void rpcb_getport_async(struct rpc_task *task) dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", task->tk_pid, __func__, - clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot); + xprt->servername, clnt->cl_prog, clnt->cl_vers, xprt->prot); /* Put self on the wait queue to ensure we get notified if * some other task is already attempting to bind the port */ @@ -665,7 +666,7 @@ void rpcb_getport_async(struct rpc_task *task) dprintk("RPC: %5u %s: trying rpcbind version %u\n", task->tk_pid, __func__, bind_version); - rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot, + rpcb_clnt = rpcb_create(xprt->servername, sap, salen, xprt->prot, bind_version); if (IS_ERR(rpcb_clnt)) { status = PTR_ERR(rpcb_clnt); diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index ce5eb68..76879bc 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -65,6 +65,7 @@ static void xprt_request_init(struct rpc_task *, struct rpc_xprt *); static void xprt_connect_status(struct rpc_task *task); static int __xprt_get_cong(struct rpc_xprt *, struct rpc_task *); +static void xprt_destroy(struct rpc_xprt *xprt); static DEFINE_SPINLOCK(xprt_list_lock); static LIST_HEAD(xprt_list); @@ -740,7 +741,7 @@ static void xprt_connect_status(struct rpc_task *task) default: dprintk("RPC: %5u xprt_connect_status: error %d connecting to " "server %s\n", task->tk_pid, -task->tk_status, - task->tk_client->cl_server); + xprt->servername); xprt_release_write(xprt, task); task->tk_status = -EIO; } @@ -1138,6 +1139,16 @@ found: xprt_init_xid(xprt); + if (strlen(args->servername) > RPC_MAXNETNAMELEN) { + xprt_destroy(xprt); + return ERR_PTR(-EINVAL); + } + xprt->servername = kstrdup(args->servername, GFP_KERNEL); + if (xprt->servername == NULL) { + xprt_destroy(xprt); + return ERR_PTR(-ENOMEM); + } + dprintk("RPC: created transport %p with %u slots\n", xprt, xprt->max_reqs); return xprt; @@ -1160,6 +1171,7 @@ static void xprt_destroy(struct rpc_xprt *xprt) rpc_destroy_wait_queue(&xprt->resend); rpc_destroy_wait_queue(&xprt->backlog); cancel_work_sync(&xprt->task_cleanup); + kfree(xprt->servername); /* * Tear down transport state and free the rpc_xprt */