From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin KaFai Lau Subject: [PATCH v2 net-next 0/4]: Allow head adjustment in XDP prog Date: Sat, 3 Dec 2016 19:17:22 -0800 Message-ID: <1480821446-4122277-1-git-send-email-kafai@fb.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Alexei Starovoitov , Brenden Blanco , Daniel Borkmann , David Miller , Jesper Dangaard Brouer , Saeed Mahameed , Tariq Toukan , Kernel Team To: Return-path: Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:57676 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751939AbcLDDRc (ORCPT ); Sat, 3 Dec 2016 22:17:32 -0500 Received: from pps.filterd (m0044012.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uB43F1p2032535 for ; Sat, 3 Dec 2016 19:17:32 -0800 Received: from mail.thefacebook.com ([199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 273vmdj8a2-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Sat, 03 Dec 2016 19:17:32 -0800 Received: from facebook.com (2401:db00:11:d0a6:face:0:33:0) by mx-out.facebook.com (10.103.99.97) with ESMTP id 312b5e82b9d011e69efb0002c9931860-edffca50 for ; Sat, 03 Dec 2016 19:17:31 -0800 Sender: netdev-owner@vger.kernel.org List-ID: This series adds a helper to allow head adjusting in XDP prog. mlx4 driver has been modified to support this feature. An example is written to encapsulate a packet with an IPv4/v6 header and then XDP_TX it out. v2: 1. Make a variable name change in bpf_xdp_adjust_head() in patch 1 2. Ensure no less than ETH_HLEN data in bpf_xdp_adjust_head() in patch 1 3. Some clarifications in commit log messages of patch 2 and 3 Thanks, --Martin