From nobody Sun Feb 8 16:50:50 2026 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 6AA9DC7EE23 for ; Wed, 7 Jun 2023 18:22:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232404AbjFGSWY (ORCPT ); Wed, 7 Jun 2023 14:22:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232915AbjFGSVg (ORCPT ); Wed, 7 Jun 2023 14:21:36 -0400 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 92374210C for ; Wed, 7 Jun 2023 11:20:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1686162035; 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=4vaOjJ4V8cBQxw4FBR0piHsYWVs4rIzqgZ7rDnK+p44=; b=X9GwB2FjaXk8Kb7wW3VftwCFebXLDFbS1iAHgGxYgUMd/tiPmtsOnLgg1N89R6okAK2rO9 4zarLww8E4stczYklnxwL39G3G2TNhbdZ8/sjRQ8CDk98G/bf+YA3EoL9n3CnICG6/QP9i CGIYMtQcBq3HvqBnSKExkZAulur6bNU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-354-LRCuNYAMOOq4Tm5Pxw5q1A-1; Wed, 07 Jun 2023 14:20:25 -0400 X-MC-Unique: LRCuNYAMOOq4Tm5Pxw5q1A-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5340480027F; Wed, 7 Jun 2023 18:20:24 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.182]) by smtp.corp.redhat.com (Postfix) with ESMTP id 87D23403367; Wed, 7 Jun 2023 18:20:22 +0000 (UTC) From: David Howells To: netdev@vger.kernel.org, Linus Torvalds Cc: David Howells , Chuck Lever , Boris Pismenny , John Fastabend , Jakub Kicinski , "David S. Miller" , Eric Dumazet , Paolo Abeni , Willem de Bruijn , David Ahern , Matthew Wilcox , Jens Axboe , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v6 13/14] tls/device: Support MSG_SPLICE_PAGES Date: Wed, 7 Jun 2023 19:19:19 +0100 Message-ID: <20230607181920.2294972-14-dhowells@redhat.com> In-Reply-To: <20230607181920.2294972-1-dhowells@redhat.com> References: <20230607181920.2294972-1-dhowells@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Make TLS's device sendmsg() support MSG_SPLICE_PAGES. This causes pages to be spliced from the source iterator if possible. This allows ->sendpage() to be replaced by something that can handle multiple multipage folios in a single transaction. Signed-off-by: David Howells Reviewed-by: Jakub Kicinski cc: Chuck Lever cc: Boris Pismenny cc: John Fastabend cc: Eric Dumazet cc: "David S. Miller" cc: Paolo Abeni cc: Jens Axboe cc: Matthew Wilcox cc: netdev@vger.kernel.org --- net/tls/tls_device.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index 439be833dcf9..bb3bb523544e 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -509,6 +509,29 @@ static int tls_push_data(struct sock *sk, tls_append_frag(record, &zc_pfrag, copy); =20 iter_offset.offset +=3D copy; + } else if (copy && (flags & MSG_SPLICE_PAGES)) { + struct page_frag zc_pfrag; + struct page **pages =3D &zc_pfrag.page; + size_t off; + + rc =3D iov_iter_extract_pages(iter_offset.msg_iter, + &pages, copy, 1, 0, &off); + if (rc <=3D 0) { + if (rc =3D=3D 0) + rc =3D -EIO; + goto handle_error; + } + copy =3D rc; + + if (WARN_ON_ONCE(!sendpage_ok(zc_pfrag.page))) { + iov_iter_revert(iter_offset.msg_iter, copy); + rc =3D -EIO; + goto handle_error; + } + + zc_pfrag.offset =3D off; + zc_pfrag.size =3D copy; + tls_append_frag(record, &zc_pfrag, copy); } else if (copy) { copy =3D min_t(size_t, copy, pfrag->size - pfrag->offset); =20 @@ -572,6 +595,9 @@ int tls_device_sendmsg(struct sock *sk, struct msghdr *= msg, size_t size) union tls_iter_offset iter; int rc; =20 + if (!tls_ctx->zerocopy_sendfile) + msg->msg_flags &=3D ~MSG_SPLICE_PAGES; + mutex_lock(&tls_ctx->tx_lock); lock_sock(sk);