From owner-freebsd-net@FreeBSD.ORG Thu Aug 16 20:52:52 2007 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 45CB916A469 for ; Thu, 16 Aug 2007 20:52:52 +0000 (UTC) (envelope-from davidch@broadcom.com) Received: from mms2.broadcom.com (mms2.broadcom.com [216.31.210.18]) by mx1.freebsd.org (Postfix) with ESMTP id 1AF3B13C469 for ; Thu, 16 Aug 2007 20:52:52 +0000 (UTC) (envelope-from davidch@broadcom.com) Received: from [10.10.64.154] by mms2.broadcom.com with ESMTP (Broadcom SMTP Relay (Email Firewall v6.3.1)); Thu, 16 Aug 2007 13:52:39 -0700 X-Server-Uuid: A6C4E0AE-A7F0-449F-BAE7-7FA0D737AC76 Received: by mail-irva-10.broadcom.com (Postfix, from userid 47) id 12EC82AF; Thu, 16 Aug 2007 13:52:40 -0700 (PDT) Received: from mail-irva-8.broadcom.com (mail-irva-8 [10.10.64.221]) by mail-irva-10.broadcom.com (Postfix) with ESMTP id F338A2AE; Thu, 16 Aug 2007 13:52:39 -0700 (PDT) Received: from mail-irva-12.broadcom.com (mail-irva-12.broadcom.com [10.10.64.146]) by mail-irva-8.broadcom.com (MOS 3.7.5a-GA) with ESMTP id FOO43875; Thu, 16 Aug 2007 13:52:39 -0700 (PDT) Received: from NT-IRVA-0750.brcm.ad.broadcom.com ( nt-irva-0750.brcm.ad.broadcom.com [10.8.194.64]) by mail-irva-12.broadcom.com (Postfix) with ESMTP id 33C6369CA5; Thu, 16 Aug 2007 13:52:39 -0700 (PDT) X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Date: Thu, 16 Aug 2007 13:52:37 -0700 Message-ID: <09BFF2FA5EAB4A45B6655E151BBDD90304C34AED@NT-IRVA-0750.brcm.ad.broadcom.com> In-Reply-To: <20070816092418.GH6523@ginganet.org> Thread-Topic: Some Broadcom GbE NIC(bge driver) suffers packet loss at receiving Thread-Index: Acff69vcLdQzGRHCQmGPQFJ4EhzM5wAWyGYQ References: <20070816092418.GH6523@ginganet.org> From: "David Christensen" To: "KAWAGUTI Ginga" , freebsd-net@freebsd.org X-WSS-ID: 6ADA669D3E89255435-01-01 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Cc: Subject: RE: Some Broadcom GbE NIC(bge driver) suffers packet loss at receiving X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Aug 2007 20:52:52 -0000 > Some revision of Broadcom GbE NIC with bge driver=20 > seems to loss 1 packet per 1000 packet at receiving on some occasion.=20 > Sending doesn't have this problem(receiving only). >=20 > This loss doesn't always happen,=20 > but when happens, it seems that loss is exactly 1 per 1000,=20 > as the last 3 digits of lost packets' sequence number are all same. > (i.e. example of lost packet seq-No. are: =20 > 3284, 4284, 5284, 8284, 9284, ...) >=20 The NIC maintains internal statistics which might give a clue to the cause of the packet loss. The latest bge driver in -CURRENT includes a number of "sysctl" nodes to bring out those statistics. Can you get that info? Dave