From patchwork Tue Aug 13 12:05:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Toshiaki Makita X-Patchwork-Id: 1146300 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=bpf-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="Xw/SEa83"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 467BLW0CTzz9sN1 for ; Tue, 13 Aug 2019 22:08:03 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728026AbfHMMIC (ORCPT ); Tue, 13 Aug 2019 08:08:02 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:44326 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727425AbfHMMIC (ORCPT ); Tue, 13 Aug 2019 08:08:02 -0400 Received: by mail-pf1-f194.google.com with SMTP id c81so2490750pfc.11; Tue, 13 Aug 2019 05:08:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=/VLzgSwz7Ojl/rXjGtgOE1lI6r7B7q/BQ6+SStfrnZg=; b=Xw/SEa83cOPsCLVKND0fZ+qg5AuHySmttLZmQ7M0SFq1S+BOLvfDiWPs+38TQNHKa1 rC6VxxOzKfoikkgaPLtlfuv29bHz0GUxupQsx9z3mPyExd9geHUiP4t92jVsxZ1w7oKj TBEDkwIHoJJLO16dJ003rzCkewMx5ZLlxc8ke7gYCS2KtEaqDQ7xdeVgP33thiHhff36 0yecyWBhyqa7lyGQ157a+LPqngtvQsjk0rajWGzPG7hu4NTpxvrtIGakkXYxDSpsdo7P YF/32sUAkMmNM07O+0QG4tZWAarTI+Bkb4la0iN72xYwaDo4WukwnJkp0YgU+ob165qR WnpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=/VLzgSwz7Ojl/rXjGtgOE1lI6r7B7q/BQ6+SStfrnZg=; b=eOa2tj/NsO3xO2pl/hmEPVFl4wfmabbV9tCjciI8irgJHKW7CIBj/VWkt8QkJAbIjm SHaI40gOIeUHjVS2NTwwI6ltuDY3fO/LccqsiKqqF3/CRyAMg/1qjLnhE/vq/CJ8zg4I 9DHY23u2SZmvf/Oo4+daaOwuTgee1U0R/c5+00Nl2n/qGhUs8uMdk4dPXI6WIzPt3quu VXH2VZF5PEwtlVoyv8sZfcT2zl78S6hxjoorxq4nPbsa3mB+YP1apTFilVz09KxncrJR FcfCJPnIoPLd96KUrKliFly7gVHghwKT//dcgaykM9T3iKFXgIBCefeSuiPkJCNCTzvD lFVw== X-Gm-Message-State: APjAAAVjPLh4DQ/1pIVli61IwPOQ9TzAlWxGayNVfVPagBB1CN1DWgvl 3V0ZBgKA3XCYDIfHSsWoiRU= X-Google-Smtp-Source: APXvYqzN/XMbIA9OkqiXo15s/d0kDOEJ88WmDPlbw9beP2ZkxhxCMwN3AKbgYyGbDerhQ4lI03NOuw== X-Received: by 2002:a63:89c2:: with SMTP id v185mr34018783pgd.241.1565698081438; Tue, 13 Aug 2019 05:08:01 -0700 (PDT) Received: from z400-fedora29.kern.oss.ntt.co.jp ([222.151.198.97]) by smtp.gmail.com with ESMTPSA id o9sm73251099pgv.19.2019.08.13.05.07.57 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 13 Aug 2019 05:08:00 -0700 (PDT) From: Toshiaki Makita To: Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , Yonghong Song , "David S. Miller" , Jakub Kicinski , Jesper Dangaard Brouer , John Fastabend , Jamal Hadi Salim , Cong Wang , Jiri Pirko Cc: Toshiaki Makita , netdev@vger.kernel.org, bpf@vger.kernel.org, William Tu Subject: [RFC PATCH bpf-next 11/14] xdp_flow: Implement vlan_push action Date: Tue, 13 Aug 2019 21:05:55 +0900 Message-Id: <20190813120558.6151-12-toshiaki.makita1@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190813120558.6151-1-toshiaki.makita1@gmail.com> References: <20190813120558.6151-1-toshiaki.makita1@gmail.com> MIME-Version: 1.0 Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This is another example action. Signed-off-by: Toshiaki Makita --- net/xdp_flow/xdp_flow_kern_bpf.c | 23 +++++++++++++++++++++-- net/xdp_flow/xdp_flow_kern_mod.c | 5 +++++ 2 files changed, 26 insertions(+), 2 deletions(-) diff --git a/net/xdp_flow/xdp_flow_kern_bpf.c b/net/xdp_flow/xdp_flow_kern_bpf.c index 8f3d359..51e181b 100644 --- a/net/xdp_flow/xdp_flow_kern_bpf.c +++ b/net/xdp_flow/xdp_flow_kern_bpf.c @@ -90,10 +90,29 @@ static inline int action_redirect(struct xdp_flow_action *action) static inline int action_vlan_push(struct xdp_md *ctx, struct xdp_flow_action *action) { + struct vlan_ethhdr *vehdr; + void *data, *data_end; + __be16 proto, tci; + account_action(XDP_FLOW_ACTION_VLAN_PUSH); - // TODO: implement this - return XDP_ABORTED; + proto = action->vlan.proto; + tci = action->vlan.tci; + + if (bpf_xdp_adjust_head(ctx, -VLAN_HLEN)) + return XDP_DROP; + + data_end = (void *)(long)ctx->data_end; + data = (void *)(long)ctx->data; + if (data + VLAN_ETH_HLEN > data_end) + return XDP_DROP; + + __builtin_memmove(data, data + VLAN_HLEN, ETH_ALEN * 2); + vehdr = data; + vehdr->h_vlan_proto = proto; + vehdr->h_vlan_TCI = tci; + + return _XDP_CONTINUE; } static inline int action_vlan_pop(struct xdp_md *ctx, diff --git a/net/xdp_flow/xdp_flow_kern_mod.c b/net/xdp_flow/xdp_flow_kern_mod.c index caa4968..52dc64e 100644 --- a/net/xdp_flow/xdp_flow_kern_mod.c +++ b/net/xdp_flow/xdp_flow_kern_mod.c @@ -55,6 +55,11 @@ static int xdp_flow_parse_actions(struct xdp_flow_actions *actions, action->ifindex = act->dev->ifindex; break; case FLOW_ACTION_VLAN_PUSH: + action->id = XDP_FLOW_ACTION_VLAN_PUSH; + action->vlan.tci = act->vlan.vid | + (act->vlan.prio << VLAN_PRIO_SHIFT); + action->vlan.proto = act->vlan.proto; + break; case FLOW_ACTION_VLAN_POP: case FLOW_ACTION_VLAN_MANGLE: case FLOW_ACTION_MANGLE: