From patchwork Thu Mar 30 12:04:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Volker Lendecke X-Patchwork-Id: 13194108 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F127FC761AF for ; Thu, 30 Mar 2023 12:05:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229436AbjC3MFD (ORCPT ); Thu, 30 Mar 2023 08:05:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37760 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229869AbjC3MFB (ORCPT ); Thu, 30 Mar 2023 08:05:01 -0400 Received: from hr2.samba.org (hr2.samba.org [IPv6:2a01:4f8:192:486::2:0]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE73F420B for ; Thu, 30 Mar 2023 05:05:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=samba.org; s=42; h=Message-Id:Date:Cc:To:From; bh=pIDAdTinNCg9b6xzvp/5PJcnEwG9KmyRNxX9esNeAQ0=; b=i09ts02uWSfeY9IjjmtoIuX9/d DctMR8T2CqsCXY/wWP1FN3ZZ+07YrdkhV0nLd8uI25S4COmhtg3fg7BCY9QMSqa7x54JEvgKyJ53H 4YlLQ6F9Z1qlWY0q85PwguJexCU82wP1hMb9twL06x5vG92NrMMQkrz4/21Cygh/mYMOB2C1lsRST QElmfPOfDmJyrgN2/UdvfXadAf7IsWVbkmlYASVwQUrSJACo3tzL8Fv6zWEXsEPa0jaKdNx5nklmT VqQxMulOaZZ8moPwtrgYO9qZNainhNlTNjQG8AdOi85LnVg+M/5qM2U9FrswdHECo8o3+gSII/ExJ qbGBi1YzlUJPAMWv0M4Q2wRYDW9SFBf+qXKGzaa/MTZsGUuebnDD7sNN/Sydf6uUOT/VgWGH/eaGS iYAEg+napjEcf9rHwGZOcgJuXQqav/zp8N09qR5KmZlE++X13qhrF7tt6dCLWyq6svundKT5yoQhl k+1xaupVqPeAjbW1W7P1tGLo; Received: from [2a01:4f8:252:410e::177:224] (port=52126 helo=atb-devel-224..) by hr2.samba.org with esmtp (Exim) id 1phr1W-006GnE-MI; Thu, 30 Mar 2023 12:04:58 +0000 From: Volker Lendecke To: linux-cifs@vger.kernel.org Cc: Volker Lendecke Subject: [PATCH 1/3] cifs: Simplify SMB2_open_init() Date: Thu, 30 Mar 2023 12:04:45 +0000 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org We can point to the create contexts in just one place, we don't have to do this in every add_*_context routine. Signed-off-by: Volker Lendecke --- fs/cifs/smb2pdu.c | 45 +++++++++++++-------------------------------- 1 file changed, 13 insertions(+), 32 deletions(-) diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 6bd2aa6af18f..5c5a7c3f3064 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -810,10 +810,6 @@ add_posix_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode) if (iov[num].iov_base == NULL) return -ENOMEM; iov[num].iov_len = sizeof(struct create_posix); - if (!req->CreateContextsOffset) - req->CreateContextsOffset = cpu_to_le32( - sizeof(struct smb2_create_req) + - iov[num - 1].iov_len); le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_posix)); *num_iovec = num + 1; return 0; @@ -2163,10 +2159,6 @@ add_lease_context(struct TCP_Server_Info *server, struct kvec *iov, return -ENOMEM; iov[num].iov_len = server->vals->create_lease_size; req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE; - if (!req->CreateContextsOffset) - req->CreateContextsOffset = cpu_to_le32( - sizeof(struct smb2_create_req) + - iov[num - 1].iov_len); le32_add_cpu(&req->CreateContextsLength, server->vals->create_lease_size); *num_iovec = num + 1; @@ -2254,10 +2246,6 @@ add_durable_v2_context(struct kvec *iov, unsigned int *num_iovec, if (iov[num].iov_base == NULL) return -ENOMEM; iov[num].iov_len = sizeof(struct create_durable_v2); - if (!req->CreateContextsOffset) - req->CreateContextsOffset = - cpu_to_le32(sizeof(struct smb2_create_req) + - iov[1].iov_len); le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2)); *num_iovec = num + 1; return 0; @@ -2277,10 +2265,6 @@ add_durable_reconnect_v2_context(struct kvec *iov, unsigned int *num_iovec, if (iov[num].iov_base == NULL) return -ENOMEM; iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2); - if (!req->CreateContextsOffset) - req->CreateContextsOffset = - cpu_to_le32(sizeof(struct smb2_create_req) + - iov[1].iov_len); le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_handle_reconnect_v2)); *num_iovec = num + 1; @@ -2311,10 +2295,6 @@ add_durable_context(struct kvec *iov, unsigned int *num_iovec, if (iov[num].iov_base == NULL) return -ENOMEM; iov[num].iov_len = sizeof(struct create_durable); - if (!req->CreateContextsOffset) - req->CreateContextsOffset = - cpu_to_le32(sizeof(struct smb2_create_req) + - iov[1].iov_len); le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable)); *num_iovec = num + 1; return 0; @@ -2356,10 +2336,6 @@ add_twarp_context(struct kvec *iov, unsigned int *num_iovec, __u64 timewarp) if (iov[num].iov_base == NULL) return -ENOMEM; iov[num].iov_len = sizeof(struct crt_twarp_ctxt); - if (!req->CreateContextsOffset) - req->CreateContextsOffset = cpu_to_le32( - sizeof(struct smb2_create_req) + - iov[num - 1].iov_len); le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_twarp_ctxt)); *num_iovec = num + 1; return 0; @@ -2491,10 +2467,6 @@ add_sd_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode, bool set if (iov[num].iov_base == NULL) return -ENOMEM; iov[num].iov_len = len; - if (!req->CreateContextsOffset) - req->CreateContextsOffset = cpu_to_le32( - sizeof(struct smb2_create_req) + - iov[num - 1].iov_len); le32_add_cpu(&req->CreateContextsLength, len); *num_iovec = num + 1; return 0; @@ -2533,10 +2505,6 @@ add_query_id_context(struct kvec *iov, unsigned int *num_iovec) if (iov[num].iov_base == NULL) return -ENOMEM; iov[num].iov_len = sizeof(struct crt_query_id_ctxt); - if (!req->CreateContextsOffset) - req->CreateContextsOffset = cpu_to_le32( - sizeof(struct smb2_create_req) + - iov[num - 1].iov_len); le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_query_id_ctxt)); *num_iovec = num + 1; return 0; @@ -2700,6 +2668,9 @@ int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, rc = add_posix_context(iov, &n_iov, mode); if (rc) goto err_free_req; + req->CreateContextsOffset = cpu_to_le32( + sizeof(struct smb2_create_req) + + iov[1].iov_len); pc_buf = iov[n_iov-1].iov_base; } @@ -2923,6 +2894,16 @@ SMB2_open_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server, } add_query_id_context(iov, &n_iov); + if (n_iov > 2) { + /* + * We have create contexts behind iov[1] (the file + * name), point at them from the main create request + */ + req->CreateContextsOffset = cpu_to_le32( + sizeof(struct smb2_create_req) + + iov[1].iov_len); + } + rqst->rq_nvec = n_iov; return 0; }