Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 14 Feb 2002 14:08:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 14 Feb 2002 14:08:12 -0500 Received: from [208.179.59.195] ([208.179.59.195]:46972 "EHLO Booterz.killerlabs.com") by vger.kernel.org with ESMTP id ; Thu, 14 Feb 2002 14:08:00 -0500 Message-ID: <3C6C0AFB.8080600@blue-labs.org> Date: Thu, 14 Feb 2002 14:07:39 -0500 From: David Ford User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.8+) Gecko/20020212 X-Accept-Language: en-us MIME-Version: 1.0 To: linux-kernel Subject: [PATCH] UDP short packet patch for ipv4 Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms090800010700090402030704" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is a cryptographically signed message in MIME format. --------------ms090800010700090402030704 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit This patch changes printk to add helpful information...i.e. who to firewall etc. It is against 2.4.18-rc1. IPV6 needs one too but in my opinion, a similar NIPQUAD macro needs built and the IPV6 core in general needs a tidying up to use the new macro. --- linux/net/ipv4/udp.c.orig Thu Feb 14 13:38:24 2002 +++ linux/net/ipv4/udp.c Thu Feb 14 13:32:34 2002 @@ -928,7 +928,14 @@ return(0); short_packet: - NETDEBUG(if (net_ratelimit()) printk(KERN_DEBUG "UDP: short packet: %d/%d\n", ulen, len)); + NETDEBUG(if (net_ratelimit()) + printk(KERN_DEBUG "UDP: short packet: %u.%u.%u.%u:%u %d/%d to %u.%u.%u.%u:%u\n", + NIPQUAD(saddr), + ntohs(uh->source), + ulen, + len, + NIPQUAD(daddr), + ntohs(uh->dest))); no_header: UDP_INC_STATS_BH(UdpInErrors); kfree_skb(skb); --------------ms090800010700090402030704 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJUTCC 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