Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753782AbaGHI5z (ORCPT ); Tue, 8 Jul 2014 04:57:55 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:52396 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753601AbaGHI5w (ORCPT ); Tue, 8 Jul 2014 04:57:52 -0400 From: Mugunthan V N To: CC: , , , Mugunthan V N Subject: [net-next PATCH 1/3] net: ethtool: Add Multicast and broadcast rate limit coalescing feature Date: Tue, 8 Jul 2014 14:27:39 +0530 Message-ID: <1404809861-7040-2-git-send-email-mugunthanvnm@ti.com> X-Mailer: git-send-email 2.0.0.390.gcb682f8 In-Reply-To: <1404809861-7040-1-git-send-email-mugunthanvnm@ti.com> References: <1404809861-7040-1-git-send-email-mugunthanvnm@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add ability to limit the broadcast or multicast packets to prevent the loading of the CPU by a hacker with a broadcast or multicast packet flood. Signed-off-by: Mugunthan V N --- include/uapi/linux/ethtool.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index e3c7a71..96ade34 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -350,6 +350,8 @@ struct ethtool_modinfo { * a TX interrupt, when the packet rate is above @pkt_rate_high. * @rate_sample_interval: How often to do adaptive coalescing packet rate * sampling, measured in seconds. Must not be zero. + * @rx_max_mcast: Threshold for high multicast packet rate (packets per second) + * @rx_max_bcast: Threshold for high broadcast packet rate (packets per second) * * Each pair of (usecs, max_frames) fields specifies that interrupts * should be coalesced until @@ -400,6 +402,8 @@ struct ethtool_coalesce { __u32 tx_coalesce_usecs_high; __u32 tx_max_coalesced_frames_high; __u32 rate_sample_interval; + __u32 rx_max_mcast; + __u32 rx_max_bcast; }; /** -- 2.0.0.390.gcb682f8 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/