From patchwork Tue Nov 21 00:04:36 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ronnie Sahlberg X-Patchwork-Id: 10067549 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1D99B603FA for ; Tue, 21 Nov 2017 00:05:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0F6AB286A3 for ; Tue, 21 Nov 2017 00:05:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 044F62932D; Tue, 21 Nov 2017 00:05:37 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 83B6B286A3 for ; Tue, 21 Nov 2017 00:05:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751594AbdKUAFg (ORCPT ); Mon, 20 Nov 2017 19:05:36 -0500 Received: from mx1.redhat.com ([209.132.183.28]:36760 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751198AbdKUAFf (ORCPT ); Mon, 20 Nov 2017 19:05:35 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C61502DB72C; Tue, 21 Nov 2017 00:05:35 +0000 (UTC) Received: from test1190.test.redhat.com (vpn2-54-66.bne.redhat.com [10.64.54.66]) by smtp.corp.redhat.com (Postfix) with ESMTP id 582975C7B8; Tue, 21 Nov 2017 00:05:33 +0000 (UTC) From: Ronnie Sahlberg To: linux-cifs Cc: Steve French Subject: [PATCH 13/19] cifs: remove rfc1002 header from smb2 read/write requests Date: Tue, 21 Nov 2017 11:04:36 +1100 Message-Id: <20171121000442.24888-14-lsahlber@redhat.com> In-Reply-To: <20171121000442.24888-1-lsahlber@redhat.com> References: <20171121000442.24888-1-lsahlber@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Tue, 21 Nov 2017 00:05:35 +0000 (UTC) Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Ronnie Sahlberg --- fs/cifs/smb2pdu.c | 53 +++++++++++++++++++++++------------------------------ fs/cifs/smb2pdu.h | 2 +- 2 files changed, 24 insertions(+), 31 deletions(-) diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 5896fcc4c7e4..cc619c19be28 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -2477,7 +2477,7 @@ smb2_new_read_req(void **buf, unsigned int *total_len, struct smb2_sync_hdr *shdr; rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, (void **) &req, - total_len); + total_len); if (rc) return rc; if (io_parms->tcon->ses->server == NULL) @@ -2666,10 +2666,9 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, struct smb2_read_plain_req *req = NULL; struct smb2_read_rsp *rsp = NULL; struct smb2_sync_hdr *shdr; - struct kvec iov[2]; + struct kvec iov[1]; struct kvec rsp_iov; unsigned int total_len; - __be32 req_len; struct smb_rqst rqst = { .rq_iov = iov, .rq_nvec = 2 }; int flags = CIFS_LOG_ERROR; @@ -2683,14 +2682,10 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, if (encryption_required(io_parms->tcon)) flags |= CIFS_TRANSFORM_REQ; - req_len = cpu_to_be32(total_len); - - iov[0].iov_base = &req_len; - iov[0].iov_len = sizeof(__be32); - iov[1].iov_base = req; - iov[1].iov_len = total_len; + iov[0].iov_base = (char *)req; + iov[0].iov_len = total_len; - rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); + rc = smb2_send_recv(xid, ses, iov, 1, &resp_buftype, flags, &rsp_iov); cifs_small_buf_release(req); rsp = (struct smb2_read_rsp *)rsp_iov.iov_base; @@ -2792,8 +2787,10 @@ smb2_async_writev(struct cifs_writedata *wdata, struct TCP_Server_Info *server = tcon->ses->server; struct kvec iov[2]; struct smb_rqst rqst = { }; + unsigned int total_len; + __be32 rfc1002_marker; - rc = small_smb2_init(SMB2_WRITE, tcon, (void **) &req); + rc = smb2_plain_req_init(SMB2_WRITE, tcon, (void **) &req, &total_len); if (rc) { if (rc == -EAGAIN && wdata->credits) { /* credits was reset by reconnect */ @@ -2809,7 +2806,7 @@ smb2_async_writev(struct cifs_writedata *wdata, if (encryption_required(tcon)) flags |= CIFS_TRANSFORM_REQ; - shdr = get_sync_hdr(req); + shdr = (struct smb2_sync_hdr *)req; shdr->ProcessId = cpu_to_le32(wdata->cfile->pid); req->PersistentFileId = wdata->cfile->fid.persistent_fid; @@ -2818,16 +2815,16 @@ smb2_async_writev(struct cifs_writedata *wdata, req->WriteChannelInfoLength = 0; req->Channel = 0; req->Offset = cpu_to_le64(wdata->offset); - /* 4 for rfc1002 length field */ req->DataOffset = cpu_to_le16( - offsetof(struct smb2_write_req, Buffer) - 4); + offsetof(struct smb2_write_req, Buffer)); req->RemainingBytes = 0; /* 4 for rfc1002 length field and 1 for Buffer */ iov[0].iov_len = 4; - iov[0].iov_base = req; - iov[1].iov_len = get_rfc1002_length(req) - 1; - iov[1].iov_base = (char *)req + 4; + rfc1002_marker = cpu_to_be32(total_len - 1 + wdata->bytes); + iov[0].iov_base = &rfc1002_marker; + iov[1].iov_len = total_len - 1; + iov[1].iov_base = (char *)req; rqst.rq_iov = iov; rqst.rq_nvec = 2; @@ -2841,8 +2838,6 @@ smb2_async_writev(struct cifs_writedata *wdata, req->Length = cpu_to_le32(wdata->bytes); - inc_rfc1001_len(&req->hdr, wdata->bytes - 1 /* Buffer */); - if (wdata->credits) { shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(wdata->bytes, SMB2_MAX_BUFFER_SIZE)); @@ -2885,13 +2880,15 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, int resp_buftype; struct kvec rsp_iov; int flags = 0; + unsigned int total_len; *nbytes = 0; if (n_vec < 1) return rc; - rc = small_smb2_init(SMB2_WRITE, io_parms->tcon, (void **) &req); + rc = smb2_plain_req_init(SMB2_WRITE, io_parms->tcon, (void **) &req, + &total_len); if (rc) return rc; @@ -2901,7 +2898,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, if (encryption_required(io_parms->tcon)) flags |= CIFS_TRANSFORM_REQ; - req->hdr.sync_hdr.ProcessId = cpu_to_le32(io_parms->pid); + req->sync_hdr.ProcessId = cpu_to_le32(io_parms->pid); req->PersistentFileId = io_parms->persistent_fid; req->VolatileFileId = io_parms->volatile_fid; @@ -2910,20 +2907,16 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, req->Channel = 0; req->Length = cpu_to_le32(io_parms->length); req->Offset = cpu_to_le64(io_parms->offset); - /* 4 for rfc1002 length field */ req->DataOffset = cpu_to_le16( - offsetof(struct smb2_write_req, Buffer) - 4); + offsetof(struct smb2_write_req, Buffer)); req->RemainingBytes = 0; iov[0].iov_base = (char *)req; - /* 4 for rfc1002 length field and 1 for Buffer */ - iov[0].iov_len = get_rfc1002_length(req) + 4 - 1; - - /* length of entire message including data to be written */ - inc_rfc1001_len(req, io_parms->length - 1 /* Buffer */); + /* 1 for Buffer */ + iov[0].iov_len = total_len - 1; - rc = SendReceive2(xid, io_parms->tcon->ses, iov, n_vec + 1, - &resp_buftype, flags, &rsp_iov); + rc = smb2_send_recv(xid, io_parms->tcon->ses, iov, n_vec + 1, + &resp_buftype, flags, &rsp_iov); cifs_small_buf_release(req); rsp = (struct smb2_write_rsp *)rsp_iov.iov_base; diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index 0c33fc8cce71..3c856f058be7 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -868,7 +868,7 @@ struct smb2_read_rsp { #define SMB2_WRITEFLAG_WRITE_UNBUFFERED 0x00000002 /* SMB3.02 or later */ struct smb2_write_req { - struct smb2_hdr hdr; + struct smb2_sync_hdr sync_hdr; __le16 StructureSize; /* Must be 49 */ __le16 DataOffset; /* offset from start of SMB2 header to write data */ __le32 Length;