From mboxrd@z Thu Jan 1 00:00:00 1970 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 1085EC63797 for ; Mon, 6 Feb 2023 06:59:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229848AbjBFG73 (ORCPT ); Mon, 6 Feb 2023 01:59:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229745AbjBFG71 (ORCPT ); Mon, 6 Feb 2023 01:59:27 -0500 Received: from mx.sberdevices.ru (mx.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BFB130F0; Sun, 5 Feb 2023 22:59:23 -0800 (PST) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mx.sberdevices.ru (Postfix) with ESMTP id 934FF5FD03; Mon, 6 Feb 2023 09:59:21 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1675666761; bh=iyACDNtFEIsHltnXG+ySQX2fasSDQiF7Yuq0gz9yqsQ=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=d6MsAvATUavP20XbY45f8BnjkeT4HelwAa47K+EmXLQJBgIPLkEBtTxBabq9Wb49O CkAwduOWqsKVrRISbwq9xq1bI0hhhsrhmkX3Syapz6xLLI0Nj+JbXDD8e/JmhMqWOu BdjD/ZS58bZ3gFSGhn1MpjkSG2pN+WlC81X4zGqtisXSGQVgg+7mNSaxX9KJdRxQlX dVRNc5GTARksDDgyJG/FubDwmAeZ7qgOBtiq25zWRRHy8YiASBw0/IcsXSLb9q6fWH EP/qq0QIST6Pg+gjES8znN4UGtS/PxEUwUnVuH/q/AMnuEARRt/hKbMdH4/S8mOS07 GSq8FB6ac6cmg== Received: from S-MS-EXCH02.sberdevices.ru (S-MS-EXCH02.sberdevices.ru [172.16.1.5]) by mx.sberdevices.ru (Postfix) with ESMTP; Mon, 6 Feb 2023 09:59:21 +0300 (MSK) From: Arseniy Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Arseniy Krasnov , "Krasnov Arseniy" CC: "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "netdev@vger.kernel.org" , kernel Subject: [RFC PATCH v1 06/12] vsock/virtio: non-linear skb handling for TAP dev Thread-Topic: [RFC PATCH v1 06/12] vsock/virtio: non-linear skb handling for TAP dev Thread-Index: AQHZOfiJxMkNoIhc8E+iz5K/W09Rxg== Date: Mon, 6 Feb 2023 06:59:21 +0000 Message-ID: In-Reply-To: <0e7c6fc4-b4a6-a27b-36e9-359597bba2b5@sberdevices.ru> Accept-Language: en-US, ru-RU Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.16.1.12] Content-Type: text/plain; charset="utf-8" Content-ID: <7A34F74EA281224884E6A4D1F6C61275@sberdevices.ru> Content-Transfer-Encoding: base64 MIME-Version: 1.0 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: 2023/02/06 01:18:00 #20834045 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Rm9yIFRBUCBkZXZpY2UgbmV3IHNrYiBpcyBjcmVhdGVkIGFuZCBkYXRhIGZyb20gdGhlIGN1cnJl bnQgc2tiIGlzDQpjb3BpZWQgdG8gaXQuIFRoaXMgYWRkcyBjb3B5aW5nIGRhdGEgZnJvbSBub24t bGluZWFyIHNrYiB0byBuZXcNCnRoZSBza2IuDQoNClNpZ25lZC1vZmYtYnk6IEFyc2VuaXkgS3Jh c25vdiA8QVZLcmFzbm92QHNiZXJkZXZpY2VzLnJ1Pg0KLS0tDQogbmV0L3Ztd192c29jay92aXJ0 aW9fdHJhbnNwb3J0X2NvbW1vbi5jIHwgNDMgKysrKysrKysrKysrKysrKysrKysrKystLQ0KIDEg ZmlsZSBjaGFuZ2VkLCA0MCBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9ucygtKQ0KDQpkaWZmIC0t Z2l0IGEvbmV0L3Ztd192c29jay92aXJ0aW9fdHJhbnNwb3J0X2NvbW1vbi5jIGIvbmV0L3Ztd192 c29jay92aXJ0aW9fdHJhbnNwb3J0X2NvbW1vbi5jDQppbmRleCBhMTU4MWM3N2NmODQuLjA1Y2U5 N2I5NjdhZCAxMDA2NDQNCi0tLSBhL25ldC92bXdfdnNvY2svdmlydGlvX3RyYW5zcG9ydF9jb21t b24uYw0KKysrIGIvbmV0L3Ztd192c29jay92aXJ0aW9fdHJhbnNwb3J0X2NvbW1vbi5jDQpAQCAt MTAxLDYgKzEwMSwzOSBAQCB2aXJ0aW9fdHJhbnNwb3J0X2FsbG9jX3NrYihzdHJ1Y3QgdmlydGlv X3Zzb2NrX3BrdF9pbmZvICppbmZvLA0KIAlyZXR1cm4gTlVMTDsNCiB9DQogDQorc3RhdGljIHZv aWQgdmlydGlvX3RyYW5zcG9ydF9jb3B5X25vbmxpbmVhcl9za2Ioc3RydWN0IHNrX2J1ZmYgKnNr YiwNCisJCQkJCQl2b2lkICpkc3QsDQorCQkJCQkJc2l6ZV90IGxlbikNCit7DQorCXNpemVfdCBy ZXN0X2xlbiA9IGxlbjsNCisNCisJd2hpbGUgKHJlc3RfbGVuICYmIHZpcnRpb192c29ja19za2Jf aGFzX2ZyYWdzKHNrYikpIHsNCisJCXN0cnVjdCBiaW9fdmVjICpjdXJyX3ZlYzsNCisJCXNpemVf dCBjdXJyX3ZlY19lbmQ7DQorCQlzaXplX3QgdG9fY29weTsNCisJCWludCBjdXJyX2ZyYWc7DQor CQlpbnQgY3Vycl9vZmZzOw0KKw0KKwkJY3Vycl9mcmFnID0gVklSVElPX1ZTT0NLX1NLQl9DQihz a2IpLT5jdXJyX2ZyYWc7DQorCQljdXJyX29mZnMgPSBWSVJUSU9fVlNPQ0tfU0tCX0NCKHNrYikt PmZyYWdfb2ZmOw0KKwkJY3Vycl92ZWMgPSAmc2tiX3NoaW5mbyhza2IpLT5mcmFnc1tjdXJyX2Zy YWddOw0KKw0KKwkJY3Vycl92ZWNfZW5kID0gY3Vycl92ZWMtPmJ2X29mZnNldCArIGN1cnJfdmVj LT5idl9sZW47DQorCQl0b19jb3B5ID0gbWluKHJlc3RfbGVuLCAoc2l6ZV90KShjdXJyX3ZlY19l bmQgLSBjdXJyX29mZnMpKTsNCisNCisJCW1lbWNweShkc3QsIHBhZ2VfdG9fdmlydChjdXJyX3Zl Yy0+YnZfcGFnZSkgKyBjdXJyX29mZnMsDQorCQkgICAgICAgdG9fY29weSk7DQorDQorCQlyZXN0 X2xlbiAtPSB0b19jb3B5Ow0KKwkJVklSVElPX1ZTT0NLX1NLQl9DQihza2IpLT5mcmFnX29mZiAr PSB0b19jb3B5Ow0KKw0KKwkJaWYgKFZJUlRJT19WU09DS19TS0JfQ0Ioc2tiKS0+ZnJhZ19vZmYg PT0gKGN1cnJfdmVjX2VuZCkpIHsNCisJCQlWSVJUSU9fVlNPQ0tfU0tCX0NCKHNrYiktPmN1cnJf ZnJhZysrOw0KKwkJCVZJUlRJT19WU09DS19TS0JfQ0Ioc2tiKS0+ZnJhZ19vZmYgPSAwOw0KKwkJ fQ0KKwl9DQorfQ0KKw0KIC8qIFBhY2tldCBjYXB0dXJlICovDQogc3RhdGljIHN0cnVjdCBza19i dWZmICp2aXJ0aW9fdHJhbnNwb3J0X2J1aWxkX3NrYih2b2lkICpvcGFxdWUpDQogew0KQEAgLTEw OSw3ICsxNDIsNiBAQCBzdGF0aWMgc3RydWN0IHNrX2J1ZmYgKnZpcnRpb190cmFuc3BvcnRfYnVp bGRfc2tiKHZvaWQgKm9wYXF1ZSkNCiAJc3RydWN0IGFmX3Zzb2NrbW9uX2hkciAqaGRyOw0KIAlz dHJ1Y3Qgc2tfYnVmZiAqc2tiOw0KIAlzaXplX3QgcGF5bG9hZF9sZW47DQotCXZvaWQgKnBheWxv YWRfYnVmOw0KIA0KIAkvKiBBIHBhY2tldCBjb3VsZCBiZSBzcGxpdCB0byBmaXQgdGhlIFJYIGJ1 ZmZlciwgc28gd2UgY2FuIHJldHJpZXZlDQogCSAqIHRoZSBwYXlsb2FkIGxlbmd0aCBmcm9tIHRo ZSBoZWFkZXIgYW5kIHRoZSBidWZmZXIgcG9pbnRlciB0YWtpbmcNCkBAIC0xMTcsNyArMTQ5LDYg QEAgc3RhdGljIHN0cnVjdCBza19idWZmICp2aXJ0aW9fdHJhbnNwb3J0X2J1aWxkX3NrYih2b2lk ICpvcGFxdWUpDQogCSAqLw0KIAlwa3RfaGRyID0gdmlydGlvX3Zzb2NrX2hkcihwa3QpOw0KIAlw YXlsb2FkX2xlbiA9IHBrdC0+bGVuOw0KLQlwYXlsb2FkX2J1ZiA9IHBrdC0+ZGF0YTsNCiANCiAJ c2tiID0gYWxsb2Nfc2tiKHNpemVvZigqaGRyKSArIHNpemVvZigqcGt0X2hkcikgKyBwYXlsb2Fk X2xlbiwNCiAJCQlHRlBfQVRPTUlDKTsNCkBAIC0xNjAsNyArMTkxLDEzIEBAIHN0YXRpYyBzdHJ1 Y3Qgc2tfYnVmZiAqdmlydGlvX3RyYW5zcG9ydF9idWlsZF9za2Iodm9pZCAqb3BhcXVlKQ0KIAlz a2JfcHV0X2RhdGEoc2tiLCBwa3RfaGRyLCBzaXplb2YoKnBrdF9oZHIpKTsNCiANCiAJaWYgKHBh eWxvYWRfbGVuKSB7DQotCQlza2JfcHV0X2RhdGEoc2tiLCBwYXlsb2FkX2J1ZiwgcGF5bG9hZF9s ZW4pOw0KKwkJaWYgKHNrYl9pc19ub25saW5lYXIoc2tiKSkgew0KKwkJCXZvaWQgKmRhdGEgPSBz a2JfcHV0KHNrYiwgcGF5bG9hZF9sZW4pOw0KKw0KKwkJCXZpcnRpb190cmFuc3BvcnRfY29weV9u b25saW5lYXJfc2tiKHNrYiwgZGF0YSwgcGF5bG9hZF9sZW4pOw0KKwkJfSBlbHNlIHsNCisJCQlz a2JfcHV0X2RhdGEoc2tiLCBwa3QtPmRhdGEsIHBheWxvYWRfbGVuKTsNCisJCX0NCiAJfQ0KIA0K IAlyZXR1cm4gc2tiOw0KLS0gDQoyLjI1LjENCg==