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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 520D7C282C3 for ; Tue, 22 Jan 2019 20:09:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 200CB21726 for ; Tue, 22 Jan 2019 20:09:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726157AbfAVUJj (ORCPT ); Tue, 22 Jan 2019 15:09:39 -0500 Received: from shards.monkeyblade.net ([23.128.96.9]:35714 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726009AbfAVUJi (ORCPT ); Tue, 22 Jan 2019 15:09:38 -0500 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::bf5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id E67D414D3EBCF; Tue, 22 Jan 2019 12:09:37 -0800 (PST) Date: Tue, 22 Jan 2019 12:09:37 -0800 (PST) Message-Id: <20190122.120937.355805969121598441.davem@davemloft.net> To: maheshb@google.com Cc: michael.chan@broadcom.com, dja@axtens.net, netdev@vger.kernel.org, edumazet@google.com, willemb@google.com Subject: Re: Stack sends oversize UDP packet to the driver From: David Miller In-Reply-To: References: <874la1r0io.fsf@linkitivity.dja.id.au> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=utf-8 Content-Transfer-Encoding: base64 X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Tue, 22 Jan 2019 12:09:38 -0800 (PST) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org RnJvbTogTWFoZXNoIEJhbmRld2FyICjgpK7gpLngpYfgpLYg4KSs4KSC4KSh4KWH4KS14KS+4KSw KSA8bWFoZXNoYkBnb29nbGUuY29tPg0KRGF0ZTogVHVlLCAyMiBKYW4gMjAxOSAxMDoyODo1OCAt MDgwMA0KDQo+IE9uIE1vbiwgSmFuIDIxLCAyMDE5IGF0IDQ6NTkgUE0gTWljaGFlbCBDaGFuIDxt aWNoYWVsLmNoYW5AYnJvYWRjb20uY29tPiB3cm90ZToNCj4+DQo+PiBPbiBNb24sIEphbiAyMSwg MjAxOSBhdCA0OjM2IFBNIERhbmllbCBBeHRlbnMgPGRqYUBheHRlbnMubmV0PiB3cm90ZToNCj4+ DQo+PiA+IEkgaGl0IGEgc2ltaWxhciBzb3VuZGluZyBpc3N1ZSBvbiBhIGJueDJ4IC0gc2VlIGNv bW1pdA0KPj4gPiA4OTE0YTU5NTExMGE2ZWNhNjlhNWUyNzViMzIzZjVkMDllMThmNGY5DQo+PiA+ DQo+PiA+IEluIHRoYXQgY2FzZSwgYSBHU08gcGFja2V0IHdpdGggZ3NvX3NpemUgdG9vIGxhcmdl IGZvciB0aGUgZmlybXdhcmUgd2FzDQo+PiA+IGNvbWluZyB0byB0aGUgYm54MnggZHJpdmVyIGZy b20gYW4gaWJtdmV0aCBkZXZpY2UgdmlhIE9wZW4gdlN3aXRjaC4gSQ0KPj4gPiBhbHNvIHRveWVk IHdpdGggYSBmaXggaW4gdGhlIHN0YWNrIGFuZCBlbmRlZCB1cCBmaXhpbmcganVzdCB0aGUgZHJp dmVyLg0KPj4NCj4+IEhpIERhbmllbCwgeWVzIEkgcmVtZW1iZXIgdGhlIGlzc3VlIHRoYXQgeW91 IHJlcG9ydGVkIGF0IHRoYXQgdGltZS4NCj4+IFRoZSBjdXJyZW50IGlzc3VlIGlzIHNpbWlsYXIg YnV0IGZvciBub24tVFNPIFVEUCBwYWNrZXRzLg0KDQpJIGp1c3Qgd2FudCB0byBzdGVwIGluIGFu ZCBzYXkgdGhhdCBJIHJlYWxseSBkb24ndCB3YW50IGRyaXZlcnMgdG8gaGF2ZSB0bw0KZGVhbCB3 aXRoIHRoaXMgcHJvYmxlbSwgaWYgcG9zc2libGUuICBEcml2ZXJzIGFyZSBoYXJkIGVub3VnaCB0 byB3cml0ZQ0KYWxyZWFkeS4NCg0KSG93ZXZlciwgc29tZSBhc3BlY3RzIG9mIHRoaXMgcHJvYmxl bSwgbGlrZSB0aGUgTVRVIGNoYW5nZXMsIHJvdXRlIGZsYXBzLA0KcGFja2V0IG1pcnJvcmluZywg ZXRjLiBhcmUgYWxsIGluIG9uZSB3YXkgb3IgYW5vdGhlciBhc3luY2hvbm91cyB0byB0aGUNCmRh dGEgZmFzdCBwYXRoIGFuZCB0aGVyZWZvcmUgd2UgbWF5IGVuZCB1cCBoYXZpbmcgdG8gZG8gc29t ZXRoaW5nIGxpa2UNCnRoaXMgYWZ0ZXJhbGwgcmlnaHQgYXQgdGhlIGxhc3Qgc3RlcCBiZWZvcmUg LT5uZG9fc3RhcnRfeG1pdCgpIG9yIHNpbWlsYXIuDQoNCkp1c3QgbXkgJDAuMDINCg==