From patchwork Fri Mar 5 18:49:11 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sripathi Kodi X-Patchwork-Id: 83819 X-Patchwork-Delegate: ericvh@gmail.com Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o25InUIY009404 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 5 Mar 2010 18:50:06 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-2.v29.ch3.sourceforge.com) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1NncaT-0005B6-MH; Fri, 05 Mar 2010 18:49:25 +0000 Received: from sfi-mx-1.v28.ch3.sourceforge.com ([172.29.28.121] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1NncaS-0005B0-Eu for v9fs-developer@lists.sourceforge.net; Fri, 05 Mar 2010 18:49:24 +0000 Received-SPF: softfail (sfi-mx-1.v28.ch3.sourceforge.com: transitioning domain of in.ibm.com does not designate 122.248.162.8 as permitted sender) client-ip=122.248.162.8; envelope-from=sripathik@in.ibm.com; helo=e28smtp08.in.ibm.com; Received: from e28smtp08.in.ibm.com ([122.248.162.8]) by sfi-mx-1.v28.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69) id 1NncaR-00007y-4a for v9fs-developer@lists.sourceforge.net; Fri, 05 Mar 2010 18:49:24 +0000 Received: from d28relay01.in.ibm.com (d28relay01.in.ibm.com [9.184.220.58]) by e28smtp08.in.ibm.com (8.14.3/8.13.1) with ESMTP id o25I4ifu015307 for ; Fri, 5 Mar 2010 23:34:44 +0530 Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay01.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o25InEah2940954 for ; Sat, 6 Mar 2010 00:19:14 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id o25InEGd022632 for ; Sat, 6 Mar 2010 00:19:14 +0530 Received: from localhost ([9.77.214.194]) by d28av01.in.ibm.com (8.14.3/8.13.1/NCO v10.0 AVin) with ESMTP id o25InCuR022611 for ; Sat, 6 Mar 2010 00:19:13 +0530 Date: Sat, 6 Mar 2010 00:19:11 +0530 From: Sripathi Kodi To: v9fs-developer@lists.sourceforge.net Message-ID: <20100306001911.1c78b9aa@in.ibm.com> In-Reply-To: <20100306000850.49e7d5f2@in.ibm.com> References: <20100306000850.49e7d5f2@in.ibm.com> X-Mailer: Claws Mail 3.7.4 (GTK+ 2.18.6; i686-redhat-linux-gnu) Mime-Version: 1.0 X-Spam-Score: -0.4 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 0.7 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) -1.1 AWL AWL: From: address is in the auto white-list X-Headers-End: 1NncaR-00007y-4a Subject: [V9fs-developer] [PATCH 2/4] [V3] 9P2010.L handshake: Add mount option X-BeenThere: v9fs-developer@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: v9fs-developer-bounces@lists.sourceforge.net X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Fri, 05 Mar 2010 18:50:06 +0000 (UTC) diff --git a/include/net/9p/client.h b/include/net/9p/client.h index fb00b32..d40f8c5 100644 --- a/include/net/9p/client.h +++ b/include/net/9p/client.h @@ -29,6 +29,19 @@ /* Number of requests per row */ #define P9_ROW_MAXTAG 255 +/** enum p9_proto_versions - 9P protocol versions + * @p9_proto_legacy: 9P Legacy mode, pre-9P2000.u + * @p9_proto_2000u: 9P2000.u extension + * @p9_proto_2010L: 9P2010.L extension + */ + +enum p9_proto_versions{ + p9_proto_legacy = 0, + p9_proto_2000u = 1, + p9_proto_2010L = 2, +}; + + /** * enum p9_trans_status - different states of underlying transports * @Connected: transport is connected and healthy @@ -111,6 +124,7 @@ struct p9_req_t { * @lock: protect @fidlist * @msize: maximum data size negotiated by protocol * @dotu: extension flags negotiated by protocol + * @proto_version: 9P protocol version to use * @trans_mod: module API instantiated with this client * @trans: tranport instance state and API * @conn: connection state information used by trans_fd @@ -138,6 +152,7 @@ struct p9_client { spinlock_t lock; /* protect client structure */ int msize; unsigned char dotu; + unsigned char proto_version; struct p9_trans_module *trans_mod; enum p9_trans_status status; void *trans; diff --git a/net/9p/client.c b/net/9p/client.c index 09d4f1e..3b5f3c9 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -46,6 +46,7 @@ enum { Opt_msize, Opt_trans, Opt_legacy, + Opt_version, Opt_err, }; @@ -53,9 +54,30 @@ static const match_table_t tokens = { {Opt_msize, "msize=%u"}, {Opt_legacy, "noextend"}, {Opt_trans, "trans=%s"}, + {Opt_version, "version=%s"}, {Opt_err, NULL}, }; +/* Interpret mount option for protocol version */ +static unsigned char get_protocol_version(const substring_t *name) +{ + unsigned char version = -EINVAL; + if (!strncmp("9p2000", name->from, name->to-name->from)) { + version = p9_proto_legacy; + P9_DPRINTK(P9_DEBUG_9P, "Protocol version: Legacy\n"); + } else if (!strncmp("9p2000.u", name->from, name->to-name->from)) { + version = p9_proto_2000u; + P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.u\n"); + } else if (!strncmp("9p2010.L", name->from, name->to-name->from)) { + version = p9_proto_2010L; + P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2010.L\n"); + } else { + P9_DPRINTK(P9_DEBUG_ERROR, "Unknown protocol version %s. ", + name->from); + } + return version; +} + static struct p9_req_t * p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...); @@ -120,6 +142,12 @@ static int parse_opts(char *opts, struct p9_client *clnt) case Opt_legacy: clnt->dotu = 0; break; + case Opt_version: + ret = get_protocol_version(&args[0]); + if (ret == -EINVAL) + goto free_and_return; + clnt->proto_version = ret; + break; default: continue; }