From patchwork Mon Nov 6 01:16:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiubo Li X-Patchwork-Id: 741480 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 52825395 for ; Mon, 6 Nov 2023 01:20:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Il1wS/6R" Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E98DCE0 for ; Sun, 5 Nov 2023 17:20:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1699233635; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C02rEUdz3PZxjsALisBQTfJ/GK48xWBBQjTE7uzXx4c=; b=Il1wS/6Rh+oLN1H4UWwA/I5W2ZyZe5n9trZC/xDJVgGgxZuZwyXtUXLXyGyfyD7ZlvD5vr GNrNz8zLUKn3M0cXRZNIuK5tPFg+7XB4g9JubkuyX8H7L3zSiSjPAk7AVA5sl+PzzEx+wy Vb+OZgbQx4aIITurX1+kEBUWbqGUrW8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-2-i7israxjN2Cp2lNzgN0n3A-1; Sun, 05 Nov 2023 20:19:05 -0500 X-MC-Unique: i7israxjN2Cp2lNzgN0n3A-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D8E64811001; Mon, 6 Nov 2023 01:19:04 +0000 (UTC) Received: from li-a71a4dcc-35d1-11b2-a85c-951838863c8d.ibm.com.com (unknown [10.72.112.124]) by smtp.corp.redhat.com (Postfix) with ESMTP id 325101121307; Mon, 6 Nov 2023 01:19:01 +0000 (UTC) From: xiubli@redhat.com To: ceph-devel@vger.kernel.org Cc: idryomov@gmail.com, jlayton@kernel.org, vshankar@redhat.com, mchangir@redhat.com, Xiubo Li Subject: [PATCH v3 1/2] libceph: save and covert sr_datalen to host-endian Date: Mon, 6 Nov 2023 09:16:43 +0800 Message-ID: <20231106011644.248119-2-xiubli@redhat.com> In-Reply-To: <20231106011644.248119-1-xiubli@redhat.com> References: <20231106011644.248119-1-xiubli@redhat.com> Precedence: bulk X-Mailing-List: ceph-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.3 From: Xiubo Li We need to save the real data length to determine exactly how many data we can parse later. URL: https://tracker.ceph.com/issues/62081 Signed-off-by: Xiubo Li Reviewed-by: Jeff Layton --- include/linux/ceph/osd_client.h | 3 ++- net/ceph/osd_client.c | 7 ++++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index bf9823956758..f703fb8030de 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -45,6 +45,7 @@ enum ceph_sparse_read_state { CEPH_SPARSE_READ_HDR = 0, CEPH_SPARSE_READ_EXTENTS, CEPH_SPARSE_READ_DATA_LEN, + CEPH_SPARSE_READ_DATA_PRE, CEPH_SPARSE_READ_DATA, }; @@ -64,7 +65,7 @@ struct ceph_sparse_read { u64 sr_req_len; /* orig request length */ u64 sr_pos; /* current pos in buffer */ int sr_index; /* current extent index */ - __le32 sr_datalen; /* length of actual data */ + u32 sr_datalen; /* length of actual data */ u32 sr_count; /* extent count in reply */ int sr_ext_len; /* length of extent array */ struct ceph_sparse_extent *sr_extent; /* extent array */ diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 1f749a7b4444..0e629dfd55ee 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -5911,8 +5911,13 @@ static int osd_sparse_read(struct ceph_connection *con, convert_extent_map(sr); ret = sizeof(sr->sr_datalen); *pbuf = (char *)&sr->sr_datalen; - sr->sr_state = CEPH_SPARSE_READ_DATA; + sr->sr_state = CEPH_SPARSE_READ_DATA_PRE; break; + case CEPH_SPARSE_READ_DATA_PRE: + /* Convert sr_datalen to host-endian */ + sr->sr_datalen = le32_to_cpu((__force __le32)sr->sr_datalen); + sr->sr_state = CEPH_SPARSE_READ_DATA; + fallthrough; case CEPH_SPARSE_READ_DATA: if (sr->sr_index >= count) { sr->sr_state = CEPH_SPARSE_READ_HDR;