From patchwork Sat Jun 3 20:49:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseniy Krasnov X-Patchwork-Id: 13266414 X-Patchwork-Delegate: kuba@kernel.org 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 C1F23156F3 for ; Sat, 3 Jun 2023 20:54:59 +0000 (UTC) Received: from mx.sberdevices.ru (mx.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 736911B5; Sat, 3 Jun 2023 13:54:57 -0700 (PDT) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mx.sberdevices.ru (Postfix) with ESMTP id 745FE5FD3D; Sat, 3 Jun 2023 23:54:49 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1685825689; bh=Lcii1bQY+QJwpWB+RMSKu82Ek54JP6VHZpwuHhErzzg=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Jg52u5GEQEg5YduLkopjTNW3BjaxbL328jtMgCcJGiSHEe1c5falJz5UAYOmb8btl 7f+eJRuv3Sl6eX4w42HLrim/lrm6Jmi0hABMEJK1ZpKpIVg/qPJCqgcdAmvq725dJ5 7lNxZpdDEl9jm+a2IhMiHWQjyjDQeFfoRpRS/lzABhlrc4QyEEjLuYQ5jxIfWlN2vv YrxGR+OA1+/8rmM2/Zd9ESP90sE4ScNs4TcpAkZzXGHwTA5TI6EeX5B9PWsp0w9Etf 1huTfS4oouFZtvh/6LZeIZP/GfZIc+FGrSPJ3X6ACxZKCNqpFeX6KhEzv9q8K/ie1v nSE+Wie9B5LZg== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mx.sberdevices.ru (Postfix) with ESMTP; Sat, 3 Jun 2023 23:54:49 +0300 (MSK) From: Arseniy Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Jason Wang , Bobby Eshleman CC: , , , , , , , Arseniy Krasnov Subject: [RFC PATCH v4 13/17] net/sock: enable setting SO_ZEROCOPY for PF_VSOCK Date: Sat, 3 Jun 2023 23:49:35 +0300 Message-ID: <20230603204939.1598818-14-AVKrasnov@sberdevices.ru> X-Mailer: git-send-email 2.35.0 In-Reply-To: <20230603204939.1598818-1-AVKrasnov@sberdevices.ru> References: <20230603204939.1598818-1-AVKrasnov@sberdevices.ru> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [172.16.1.6] X-ClientProxiedBy: S-MS-EXCH02.sberdevices.ru (172.16.1.5) To S-MS-EXCH01.sberdevices.ru (172.16.1.4) X-KSMG-Rule-ID: 4 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Status: not scanned, disabled by settings X-KSMG-AntiSpam-Interceptor-Info: not scanned X-KSMG-AntiPhishing: not scanned, disabled by settings X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 1.1.2.30, bases: 2023/06/03 16:55:00 #21417531 X-KSMG-AntiVirus-Status: Clean, skipped X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC PF_VSOCK supports MSG_ZEROCOPY transmission, so SO_ZEROCOPY could be enabled. PF_VSOCK implementation is a little bit special comparing to PF_INET - MSG_ZEROCOPY support depends on transport layer of PF_VSOCK, but here we can't "ask" its transport, so setting of this option is always allowed, but if some transport doesn't support zerocopy tx, send callback of PF_VSOCK will return -EOPNOTSUPP. Signed-off-by: Arseniy Krasnov --- net/core/sock.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/core/sock.c b/net/core/sock.c index 5440e67bcfe3..d558e541e6d7 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1452,9 +1452,11 @@ int sk_setsockopt(struct sock *sk, int level, int optname, (sk->sk_type == SOCK_DGRAM && sk->sk_protocol == IPPROTO_UDP))) ret = -EOPNOTSUPP; - } else if (sk->sk_family != PF_RDS) { + } else if (sk->sk_family != PF_RDS && + sk->sk_family != PF_VSOCK) { ret = -EOPNOTSUPP; } + if (!ret) { if (val < 0 || val > 1) ret = -EINVAL;