From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal Simek Subject: Re: ICMP packets - ll_temac with Microblaze Date: Wed, 21 Dec 2011 11:54:25 +0100 Message-ID: <4EF1BAE1.7020409@monstr.eu> References: <4EF1B0D9.2010007@monstr.eu> <1324463334.2728.20.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <1324463452.2728.21.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <4EF1B5BC.5020103@monstr.eu> <1324463838.2728.24.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <4EF1B7E4.4010602@monstr.eu> <1324464308.2728.26.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> Reply-To: monstr@monstr.eu Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: David Miller , John Williams , netdev@vger.kernel.org To: Eric Dumazet Return-path: Received: from mail-ee0-f46.google.com ([74.125.83.46]:33145 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750733Ab1LUKy1 (ORCPT ); Wed, 21 Dec 2011 05:54:27 -0500 Received: by eekc4 with SMTP id c4so7418219eek.19 for ; Wed, 21 Dec 2011 02:54:26 -0800 (PST) In-Reply-To: <1324464308.2728.26.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> Sender: netdev-owner@vger.kernel.org List-ID: Eric Dumazet wrote: > Le mercredi 21 d=C3=A9cembre 2011 =C3=A0 11:41 +0100, Michal Simek a = =C3=A9crit : >=20 >> yes, page size is 4k. >> >> Here is the log for allocation - origin size for MTU 9000 is 0x2420(= 9248) and size after >> overhead is 0x3f40(16192) >> >> kmalloc_node_track_caller size 00002420, SKB_WITH_OVERHEAD(ksize(dat= a)) 00003f40 >> skb->head c7870000 >> skb->data c7870000 >> skb->tail c7870000 >> skb->truesize 000040c0 >> skb->end c7873f40 >> >=20 > So basically truesize is bigger than previous kernel, and you hit a > socket limit. (RCVBUF ?) Where is that limit setup? Michal --=20 Michal Simek, Ing. (M.Eng) w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/= fdt/ Microblaze U-BOOT custodian