From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [BUG] netpoll is unable to handle skb's using packet split Date: Mon, 14 Nov 2005 13:15:38 -0800 Message-ID: <9929d2390511141315t2fb15b2aucbbebcbe4cec7ef1@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, mpm@selenic.com Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org When using packet split, netpoll times out when doing a netdump. Server logs: --netdump[14973]: Got too many timeouts in handshaking, ignoring client 172.0.2.250 --netdump[14973]: Got too many timeouts waiting for SHOW_STATUS for client 172.0.2.250, rebooting it. When packet split is not used, netpoll dumps correctly. This was reproduced using the initial setup: HP DL380G3 (Server) RHEL4 U1 7170 NIC e1000 driver HP DL380G4 (Client) RHEL3 U5 7170 NIC e1000 driver We also tested using the latest RHEL4 U2 on the client, with the same results. Netpoll does not appear to be able to handle skb's using packet split, a possible resolution would be to test for packet split and to use skb_linearize() in netpoll to resolve the issue. -- Cheers, Jeff