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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C73B2C433E0 for ; Tue, 2 Feb 2021 09:12:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7780C64E33 for ; Tue, 2 Feb 2021 09:12:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232838AbhBBJLv (ORCPT ); Tue, 2 Feb 2021 04:11:51 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:37987 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232762AbhBBJGK (ORCPT ); Tue, 2 Feb 2021 04:06:10 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-235-d0sEAq5wO-e4gEXTsz9W_A-1; Tue, 02 Feb 2021 09:04:06 +0000 X-MC-Unique: d0sEAq5wO-e4gEXTsz9W_A-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Tue, 2 Feb 2021 09:04:08 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Tue, 2 Feb 2021 09:04:08 +0000 From: David Laight To: 'Xie He' , Julian Wiedmann CC: "David S. Miller" , Jakub Kicinski , Linux X25 , Linux Kernel Network Developers , LKML , "Martin Schiller" Subject: RE: [PATCH net] net: lapb: Copy the skb before sending a packet Thread-Topic: [PATCH net] net: lapb: Copy the skb before sending a packet Thread-Index: AQHW+LWCuPwcEejJYE+Lkf4DZiBCw6pEkh0g Date: Tue, 2 Feb 2021 09:04:07 +0000 Message-ID: <6da2329e69d247daac6c6d7d442f0e38@AcuMS.aculab.com> References: <20210201055706.415842-1-xie.he.0141@gmail.com> <4d1988d9-6439-ae37-697c-d2b970450498@linux.ibm.com> In-Reply-To: Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogWGllIEhlDQo+IFNlbnQ6IDAxIEZlYnJ1YXJ5IDIwMjEgMTY6MTUNCj4gDQo+IE9uIE1v biwgRmViIDEsIDIwMjEgYXQgNjoxMCBBTSBKdWxpYW4gV2llZG1hbm4gPGp3aUBsaW51eC5pYm0u Y29tPiB3cm90ZToNCj4gPg0KPiA+IFRoaXMgc291bmRzIGEgYml0IGxpa2UgeW91IHdhbnQgc2ti X2Nvd19oZWFkKCkgLi4uID8NCj4gDQo+IENhbGxpbmcgInNrYl9jb3dfaGVhZCIgYmVmb3JlIHdl IGNhbGwgInNrYl9jbG9uZSIgd291bGQgaW5kZWVkIHNvbHZlDQo+IHRoZSBwcm9ibGVtIG9mIHdy aXRlcyB0byBvdXIgY2xvbmVzIGFmZmVjdGluZyBjbG9uZXMgaW4gb3RoZXIgcGFydHMgb2YNCj4g dGhlIHN5c3RlbS4gQnV0IHNpbmNlIHdlIGFyZSBzdGlsbCB3cml0aW5nIHRvIHRoZSBza2IgYWZ0 ZXINCj4gInNrYl9jbG9uZSIsIGl0J2Qgc3RpbGwgYmUgYmV0dGVyIHRvIHJlcGxhY2UgInNrYl9j bG9uZSIgd2l0aA0KPiAic2tiX2NvcHkiIHRvIGF2b2lkIGludGVyZmVyZW5jZSBiZXR3ZWVuIG91 ciBvd24gY2xvbmVzLg0KDQpXaGF0IGlzIHRoZSBmYXN0ZXN0IGxpbmsgbGFwYiBpcyBhY3R1YWxs eSB1c2VkIG9uIHRoZXNlIGRheXM/DQo2NGsgdXNlZCB0byBiZSAnZmFzdCcgLSBzbyBjb3B5aW5n IHRoZSBza2IgaXNuJ3QgZ29pbmcgdG8gaGF2ZQ0KYSBub3RpY2VhYmxlIGVmZmVjdCBvbiBzeXN0 ZW0gcGVyZm9ybWFuY2UuDQoNCldlIGRpZCBvbmNlIGdldCBhICdmcmVlJyB1cGdyYWRlIG9mIG91 ciBYLjI1IGxpbmsgZnJvbSAyNDAwIHRvIDk2MDAuDQpQcm9iYWJseSBkdWUgdG8gdGhlIHBvd2Vy IGNvbnN1bXB0aW9uIGFuZCByYWNrIHNwYWNlIG5lZWRlZCBmb3INCnRoZSBvbGRlciBtb2RlbS4N Cg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxleSBSb2Fk LCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0aW9uIE5v OiAxMzk3Mzg2IChXYWxlcykNCg==