From patchwork Wed Jan 4 01:18:26 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= X-Patchwork-Id: 710797 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3ttZfm4113z9t0P for ; Wed, 4 Jan 2017 13:35:28 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758495AbdADCfW (ORCPT ); Tue, 3 Jan 2017 21:35:22 -0500 Received: from rere.qmqm.pl ([84.10.57.10]:39170 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758217AbdADCfK (ORCPT ); Tue, 3 Jan 2017 21:35:10 -0500 Received: by rere.qmqm.pl (Postfix, from userid 1000) id DA4C36081; Wed, 4 Jan 2017 02:18:26 +0100 (CET) Message-Id: <83e17cf9afe848670ef908da458754e589592bf5.1483492355.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Subject: [PATCH net-next 2/6] net/bpf_jit: ARM: split VLAN_PRESENT bit handling from VLAN_TCI MIME-Version: 1.0 To: netdev@vger.kernel.org Cc: Russell King , linux-arm-kernel@lists.infradead.org Date: Wed, 4 Jan 2017 02:18:26 +0100 (CET) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Signed-off-by: Michał Mirosław --- v2: remove one insn for big-endians arch/arm/net/bpf_jit_32.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index 93d0b6d0b63e..0700cbbe4f14 100644 --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -915,17 +915,21 @@ static int build_body(struct jit_ctx *ctx) emit(ARM_LDR_I(r_A, r_skb, off), ctx); break; case BPF_ANC | SKF_AD_VLAN_TAG: - case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT: ctx->seen |= SEEN_SKB; BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2); off = offsetof(struct sk_buff, vlan_tci); emit(ARM_LDRH_I(r_A, r_skb, off), ctx); - if (code == (BPF_ANC | SKF_AD_VLAN_TAG)) - OP_IMM3(ARM_AND, r_A, r_A, ~VLAN_TAG_PRESENT, ctx); - else { - OP_IMM3(ARM_LSR, r_A, r_A, 12, ctx); +#ifdef VLAN_TAG_PRESENT + OP_IMM3(ARM_AND, r_A, r_A, ~VLAN_TAG_PRESENT, ctx); +#endif + break; + case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT: + off = PKT_VLAN_PRESENT_OFFSET(); + emit(ARM_LDRB_I(r_A, r_skb, off), ctx); + if (PKT_VLAN_PRESENT_BIT) + OP_IMM3(ARM_LSR, r_A, r_A, PKT_VLAN_PRESENT_BIT, ctx); + if (PKT_VLAN_PRESENT_BIT < 7) OP_IMM3(ARM_AND, r_A, r_A, 0x1, ctx); - } break; case BPF_ANC | SKF_AD_PKTTYPE: ctx->seen |= SEEN_SKB;