From patchwork Mon Dec 2 07:29:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ronnie Sahlberg X-Patchwork-Id: 11268751 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 749CE139A for ; Mon, 2 Dec 2019 07:29:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 49A7D2146E for ; Mon, 2 Dec 2019 07:29:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="GQuS/3ND" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725977AbfLBH3P (ORCPT ); Mon, 2 Dec 2019 02:29:15 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:52083 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726010AbfLBH3O (ORCPT ); Mon, 2 Dec 2019 02:29:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1575271753; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lBE2Mnyi4BgxQ05rdTMKHFLN6j9kemNalwQjFo3CDmk=; b=GQuS/3NDVm2vt3OuX5RlHC2KdEgWVEGM6racF14Y4zZ6bpZxGLH5KFZnEsgSzhcWgay3Hu DJfQ/H38QYznAeyt0v5y9fJ35JCUi5g44FwrGtkAOyU10HVm5n1we+OtN5deFFdVICTO0P qLS1QtgUb8pCnFW3w13Ohd23vHhrQbo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-282-Wwz9E-D6OK-VU_tcnfFDWw-1; Mon, 02 Dec 2019 02:29:12 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5A0CC183B708 for ; Mon, 2 Dec 2019 07:29:11 +0000 (UTC) Received: from test1135.test.redhat.com (vpn2-54-114.bne.redhat.com [10.64.54.114]) by smtp.corp.redhat.com (Postfix) with ESMTP id AEB4C5C545; Mon, 2 Dec 2019 07:29:10 +0000 (UTC) From: Ronnie Sahlberg To: linux-cifs Cc: Ronnie Sahlberg Subject: [PATCH 3/3] cifs: use compounding for open and first query-dir for readdir() Date: Mon, 2 Dec 2019 17:29:00 +1000 Message-Id: <20191202072900.21981-4-lsahlber@redhat.com> In-Reply-To: <20191202072900.21981-1-lsahlber@redhat.com> References: <20191202072900.21981-1-lsahlber@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: Wwz9E-D6OK-VU_tcnfFDWw-1 X-Mimecast-Spam-Score: 0 Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Combine the initial SMB2_Open and the first SMB2_Query_Directory in a compound. This shaves one round-trip of each directory listing, changing it from 4 to 3 for small directories. Signed-off-by: Ronnie Sahlberg --- fs/cifs/cifsproto.h | 3 ++ fs/cifs/smb2ops.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++------- 2 files changed, 86 insertions(+), 12 deletions(-) diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 1ed695336f62..b276281ec0d8 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -595,6 +595,9 @@ bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); void extract_unc_hostname(const char *unc, const char **h, size_t *len); int copy_path_name(char *dst, const char *src); +int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, + int resp_buftype, + struct cifs_search_info *srch_inf); #ifdef CONFIG_CIFS_DFS_UPCALL static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index a7f328f79c6f..58b9b694b62f 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1997,14 +1997,33 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_search_info *srch_inf) { __le16 *utf16_path; - int rc; - __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; + struct smb_rqst rqst[2]; + struct kvec rsp_iov[2]; + int resp_buftype[2]; + struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; + struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE]; + int rc, flags = 0; + u8 oplock = SMB2_OPLOCK_LEVEL_NONE; struct cifs_open_parms oparms; + struct smb2_query_directory_rsp *qd_rsp = NULL; + struct smb2_create_rsp *op_rsp = NULL; utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); if (!utf16_path) return -ENOMEM; + if (smb3_encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + memset(rqst, 0, sizeof(rqst)); + resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER; + memset(rsp_iov, 0, sizeof(rsp_iov)); + + /* Open */ + memset(&open_iov, 0, sizeof(open_iov)); + rqst[0].rq_iov = open_iov; + rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; + oparms.tcon = tcon; oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; oparms.disposition = FILE_OPEN; @@ -2015,22 +2034,74 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, oparms.fid = fid; oparms.reconnect = false; - rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL); - kfree(utf16_path); - if (rc) { - cifs_dbg(FYI, "open dir failed rc=%d\n", rc); - return rc; - } + rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path); + if (rc) + goto qdf_free; + smb2_set_next_command(tcon, &rqst[0]); + /* Query directory */ srch_inf->entries_in_buffer = 0; srch_inf->index_of_last_entry = 2; - rc = SMB2_query_directory(xid, tcon, fid->persistent_fid, - fid->volatile_fid, 0, srch_inf); + memset(&qd_iov, 0, sizeof(qd_iov)); + rqst[1].rq_iov = qd_iov; + rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE; + + rc = SMB2_query_directory_init(xid, tcon, &rqst[1], + COMPOUND_FID, COMPOUND_FID, + 0, srch_inf->info_level); + if (rc) + goto qdf_free; + + smb2_set_related(&rqst[1]); + + rc = compound_send_recv(xid, tcon->ses, flags, 2, rqst, + resp_buftype, rsp_iov); + if (!rc) { + op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; + if (op_rsp->sync_hdr.Status == STATUS_SUCCESS) { + fid->persistent_fid = op_rsp->PersistentFileId; + fid->volatile_fid = op_rsp->VolatileFileId; + } else { + cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc); + goto qdf_free; + } + } else { + qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base; + if (rc == -ENODATA && + qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) { + trace_smb3_query_dir_done(xid, fid->persistent_fid, + tcon->tid, tcon->ses->Suid, 0, 0); + srch_inf->endOfSearch = true; + rc = 0; + } else { + SMB2_close(xid, tcon, fid->persistent_fid, + fid->volatile_fid); + cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc); + trace_smb3_query_dir_err(xid, fid->persistent_fid, + tcon->tid, tcon->ses->Suid, 0, 0, rc); + } + goto qdf_free; + } + + rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1], + srch_inf); if (rc) { - cifs_dbg(FYI, "query directory failed rc=%d\n", rc); - SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); + trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid, + tcon->ses->Suid, 0, 0, rc); + goto qdf_free; } + resp_buftype[1] = CIFS_NO_BUFFER; + + trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid, + tcon->ses->Suid, 0, srch_inf->entries_in_buffer); + + qdf_free: + kfree(utf16_path); + SMB2_open_free(&rqst[0]); + SMB2_query_directory_free(&rqst[1]); + free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); + free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); return rc; }