From nobody Sat Feb 7 08:02:42 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 103A6C7EE2F for ; Wed, 31 May 2023 11:01:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235136AbjEaLBS (ORCPT ); Wed, 31 May 2023 07:01:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51962 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232018AbjEaLBK (ORCPT ); Wed, 31 May 2023 07:01:10 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 845F8129 for ; Wed, 31 May 2023 04:00:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1685530827; 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=97CTgaKk+HjxMsHB1NZqYRmtg/935y1khOuMG78saNk=; b=MYCEmZplyZkTpDhH0b5lZtPIWa2nW+xa3zhd+YFwINowjFWw1mpQu7vCBxneQbj9IQZK2b QvirN5ttp/FkT+SR9xA9xaJ+UR5uQkcmrEeQEDZqsiN9Vugoz8fne6aSYrxKaO0/WP64KC 9Voajwis2cR8m4u41UVDfzJHvoXzueE= 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-513-3tfZ-SxcM6qaXos3TuNsaQ-1; Wed, 31 May 2023 07:00:21 -0400 X-MC-Unique: 3tfZ-SxcM6qaXos3TuNsaQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id BA646101AA42; Wed, 31 May 2023 11:00:20 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.182]) by smtp.corp.redhat.com (Postfix) with ESMTP id E15D72166B25; Wed, 31 May 2023 11:00:18 +0000 (UTC) From: David Howells To: netdev@vger.kernel.org Cc: David Howells , Ayush Sawal , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Willem de Bruijn , David Ahern , Matthew Wilcox , Jens Axboe , Simon Horman , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v2 1/2] chelsio: Support MSG_SPLICE_PAGES Date: Wed, 31 May 2023 12:00:07 +0100 Message-ID: <20230531110008.642903-2-dhowells@redhat.com> In-Reply-To: <20230531110008.642903-1-dhowells@redhat.com> References: <20230531110008.642903-1-dhowells@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Make Chelsio's TLS offload sendmsg() support MSG_SPLICE_PAGES, splicing in pages from the source iterator if possible and copying the data in otherwise. This allows ->sendpage() to be replaced by something that can handle multiple multipage folios in a single transaction. Signed-off-by: David Howells cc: Ayush Sawal cc: "David S. Miller" cc: Eric Dumazet cc: Jakub Kicinski cc: Paolo Abeni cc: Jens Axboe cc: Matthew Wilcox cc: netdev@vger.kernel.org --- .../ethernet/chelsio/inline_crypto/chtls/chtls_io.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c b/= drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c index ae6b17b96bf1..1d08386ac916 100644 --- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c +++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c @@ -1092,7 +1092,17 @@ int chtls_sendmsg(struct sock *sk, struct msghdr *ms= g, size_t size) if (copy > size) copy =3D size; =20 - if (skb_tailroom(skb) > 0) { + if (msg->msg_flags & MSG_SPLICE_PAGES) { + err =3D skb_splice_from_iter(skb, &msg->msg_iter, copy, + sk->sk_allocation); + if (err < 0) { + if (err =3D=3D -EMSGSIZE) + goto new_buf; + goto do_fault; + } + copy =3D err; + sk_wmem_queued_add(sk, copy); + } else if (skb_tailroom(skb) > 0) { copy =3D min(copy, skb_tailroom(skb)); if (is_tls_tx(csk)) copy =3D min_t(int, copy, csk->tlshws.txleft);