From patchwork Wed Oct 2 15:23:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Chen X-Patchwork-Id: 1992060 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=j6tJQhC/; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org (client-ip=150.107.74.76; helo=mail.ozlabs.org; envelope-from=srs0=iszw=q6=vger.kernel.org=sparclinux+bounces-2299-patchwork-incoming=ozlabs.org@ozlabs.org; receiver=patchwork.ozlabs.org) Received: from mail.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XJdqx5WF9z1xt1 for ; Thu, 3 Oct 2024 01:23:40 +1000 (AEST) Received: from mail.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4XJdqv1ZxHz4xPF for ; Thu, 3 Oct 2024 01:23:39 +1000 (AEST) Received: by gandalf.ozlabs.org (Postfix) id 4XJdqr1l4sz4xPR; Thu, 3 Oct 2024 01:23:36 +1000 (AEST) Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: gandalf.ozlabs.org; arc=pass smtp.remote-ip="2604:1380:45e3:2400::1" arc.chain=subspace.kernel.org ARC-Seal: i=2; a=rsa-sha256; d=ozlabs.org; s=201707; t=1727882616; cv=pass; b=KyKI3yxz5XJrTGZSceS0H+6kryZxS2MW9g5EDo/JZVC3wPWZc5HG9e48RpX1Z0QHWM3m1c50MH9EYP4i9srl9IQ31afjhW6YEVdKMPJX47vJAHBWkNXVLJX+Wp/at3aUCgSV97JYkF0WWuDo+AJkhz+QXs44yZ8HuvaixfNoKMEx2DnyJVU9pXvjzzUbedIB9nklnVUPZm8FPUYd4h711wQewoAYFYDQ0Wty9j9yuoesEVbDuJ1/oXuLmieCqu4R+1sIjbeig/kJCnW1U37ISI4m+1XiADWpo3NPDpx1NwosaIG4e+lzXSDi8HtEQfZTIEYO4CrjatVO1mVulZR1rA== ARC-Message-Signature: i=2; a=rsa-sha256; d=ozlabs.org; s=201707; t=1727882616; c=relaxed/relaxed; bh=3NUXisVM/wT+DZeyGCacC+8atQ4U/vkD4j2oPHhfUC0=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=DCHCvy2Xz7tgCePfY9c4heVFdRqSRmF/93lTpbbAiZGOsE3tLvXv1PU+4uCO+djM9E/mZX15s+RKsIqj0dDbxTXXGLLjdw57oM0I0ab1pWpCzecb3Mt/bifL11wws2JMkxvhwCsJtwt4rMQUMs5I/72nbtH7dEepMSyGf2bXNyD+2bSJHxR0Gf/Ey+TD35/BzgYcAwJNPSll9ZqPOqVAZlUHPeR2IQlDDSBg+nQG5RIdoYXqP5u6yFpSNLllXP0b+NTAYtgM7bZZSOKwD3T6FRNwG6NahxqgtnmsoU+5XFHtSAwzeteIZeN38+I0ho9ufxg+IZ7DZm3Yjifdb/VZMA== ARC-Authentication-Results: i=2; gandalf.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=j6tJQhC/; dkim-atps=neutral; spf=pass (client-ip=2604:1380:45e3:2400::1; helo=sv.mirrors.kernel.org; envelope-from=sparclinux+bounces-2299-patchwork-incoming=ozlabs.org@vger.kernel.org; receiver=ozlabs.org) smtp.mailfrom=vger.kernel.org Authentication-Results: gandalf.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: gandalf.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=j6tJQhC/; dkim-atps=neutral Authentication-Results: gandalf.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45e3:2400::1; helo=sv.mirrors.kernel.org; envelope-from=sparclinux+bounces-2299-patchwork-incoming=ozlabs.org@vger.kernel.org; receiver=ozlabs.org) Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org [IPv6:2604:1380:45e3:2400::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by gandalf.ozlabs.org (Postfix) with ESMTPS id 4XJdqq6Zcmz4xPF for ; Thu, 3 Oct 2024 01:23:35 +1000 (AEST) Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 23BAB281C04 for ; Wed, 2 Oct 2024 15:23:35 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5FEDD1D0795; Wed, 2 Oct 2024 15:23:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="j6tJQhC/" X-Original-To: sparclinux@vger.kernel.org Received: from mail-pl1-f180.google.com (mail-pl1-f180.google.com [209.85.214.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D41691D043E; Wed, 2 Oct 2024 15:23:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.180 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727882608; cv=none; b=pM7EvKY8zO0OAQ+ZAnBoBRgGpRJPa/xPaU089Dtjpqb0ql2ZLiqix3s6awxUYz3r4kC0ouqWXL6sj4Wa3821KGsRUZGBzfrvn++glfJi8J5zqqF01g74HCbgaE083ikQbuNir3g0dWhf5UJwwtO/oDPSllTwxZbeLQjtP8qDQYs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727882608; c=relaxed/simple; bh=9QgEWSC9Cg8flSSZRMn33S16yR3aaX8xH79f+g2M03s=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=JODqFCfGRXZh795Q0DAOG8TPyOaIvlxt/CfCiCicTjDLx8Fq0iocEaPY8Ln6nf9BfH9Bwq4BCZ76hDX2wx0uG1LPhXwYDUPAP0qCIX4HjlJ2iJBM+Q3L0Pah01aFNRai0J+uXSdXKX9SBMM7CNAoSYveihqtnkeNPPdTf96qQtU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=j6tJQhC/; arc=none smtp.client-ip=209.85.214.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pl1-f180.google.com with SMTP id d9443c01a7336-20b4a0940e3so51329445ad.0; Wed, 02 Oct 2024 08:23:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1727882606; x=1728487406; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=3NUXisVM/wT+DZeyGCacC+8atQ4U/vkD4j2oPHhfUC0=; b=j6tJQhC/L7aPLu0JE8FzXCGTYhmmXrpoqCaiZ0uJoY0/EcnfcYH8/boWuQgfEqT8E5 EBdiqLLHPdflc4w8qcDwLEfaG3xELAdzv1T3VxNRuEEX3LTrCZGqu89eX9T8JZNa5Ibe /tl30pN0Pa3kt1QyQ7HdAUxjKFub8OoN/hv0/k915cLyUN6RDbY5JQ2gjRWwbZb3KFln NEUWXHGdH0tVJV2SuKpnmIdKdER0c6OHvOn+ED8fXU8h6cWDjDM5jSF6HYRZ00YpBt1R V5jMbqQH6Zy1Pgxjfprk3bJpQ+rwWqH9bVKTlzLt7gZZ3EGw0wQos2aYwiM2cDwLuN65 i1pw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727882606; x=1728487406; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=3NUXisVM/wT+DZeyGCacC+8atQ4U/vkD4j2oPHhfUC0=; b=L8cdEaDq4Eqnq4U/uIFG4qLwBunHzjvF5G+cO4ZxXU+gQQODCXRV80uve+FH1UYghG h3Zgb1lYxJR3Vltass4p88KxVdGB7vmzOZYR71qDVrUOQsVVIGE2oYjc1DOdGA9AOKyQ AbCYAcMDJU2DKPHM53qtUyJr30Eo83ztjR7txHbWVfIdCLeEBqLeWSkg4QBZBEBqPMiN P3XZt3v/4ul6Wz0kz3qKp7d1MwOHC0F5//AwOPKuUZRIE2xY+konLlPIOv3QLJA+s4cw WG6qaaOaFNglGM1RMwe7tmmu6QxdhVXZGrcgoa5TtTDGaB6TuRVNG1XYZigQ5dIJgriA paKA== X-Forwarded-Encrypted: i=1; AJvYcCUAeVR5UmwzMIkrsAC4nGFksOwhfJfc/n9fgDk3jjoiRN1H31br7VZrrOhXClDUqbxFtP2opowg0LvIQg==@vger.kernel.org, AJvYcCXS53xJRi/DMr/k5TG5iSoN4RSo5M4pYCs7QkSXk5icf9iGwzcKVDNzoZ47Zt12o2CdJdGGo0zh6GfXLFA=@vger.kernel.org X-Gm-Message-State: AOJu0YyiSCy6/ei/H5o0OQ7322qGxH68NTblyLkiLWMa8OI9HopMQ+hm MUYD5G5536Tl4hV1ndlM8TjWH8DxunB9IZkYgYOjyc6LQYD4Q8uZ X-Google-Smtp-Source: AGHT+IFbfDGXRUm2r3ukhbWnDtWidJGoMNUA4e0wogsxnZ31U5cqiP2sksQHU7YfX7khnE/NZHFNeQ== X-Received: by 2002:a17:903:32cb:b0:20b:adec:2a26 with SMTP id d9443c01a7336-20bc5a0a81dmr59914895ad.15.1727882605978; Wed, 02 Oct 2024 08:23:25 -0700 (PDT) Received: from localhost ([116.198.225.81]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20b37d8ccfcsm85991365ad.72.2024.10.02.08.23.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Oct 2024 08:23:25 -0700 (PDT) From: Tao Chen To: Alexei Starovoitov , Daniel Borkmann , John Fastabend , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , Jiri Olsa , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . Peter Anvin" Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, Tao Chen Subject: [PATCH bpf-next 2/2 v2] bpf: Add BPF_CALL_FUNC to simplify code Date: Wed, 2 Oct 2024 23:23:20 +0800 Message-Id: <20241002152320.388623-1-chen.dylane@gmail.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: sparclinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 No logic changed, like macro BPF_CALL_IMM, add BPF_CALL_FUNC to simplify code. Signed-off-by: Tao Chen --- arch/sparc/net/bpf_jit_comp_64.c | 2 +- arch/x86/net/bpf_jit_comp.c | 2 +- arch/x86/net/bpf_jit_comp32.c | 5 ++--- include/linux/filter.h | 2 ++ kernel/bpf/core.c | 2 +- 5 files changed, 7 insertions(+), 6 deletions(-) Change list: - v2 -> v1: - fix compile error reported by kernel test robot diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c index 73bf0aea8baf..076b1f216360 100644 --- a/arch/sparc/net/bpf_jit_comp_64.c +++ b/arch/sparc/net/bpf_jit_comp_64.c @@ -1213,7 +1213,7 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) /* function call */ case BPF_JMP | BPF_CALL: { - u8 *func = ((u8 *)__bpf_call_base) + imm; + u8 *func = BPF_CALL_FUNC(imm); ctx->saw_call = true; diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 06b080b61aa5..052e5cc65fc0 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -2126,7 +2126,7 @@ st: if (is_imm8(insn->off)) case BPF_JMP | BPF_CALL: { u8 *ip = image + addrs[i - 1]; - func = (u8 *) __bpf_call_base + imm32; + func = BPF_CALL_FUNC(imm32); if (tail_call_reachable) { LOAD_TAIL_CALL_CNT_PTR(bpf_prog->aux->stack_depth); ip += 7; diff --git a/arch/x86/net/bpf_jit_comp32.c b/arch/x86/net/bpf_jit_comp32.c index de0f9e5f9f73..f7277639bd2c 100644 --- a/arch/x86/net/bpf_jit_comp32.c +++ b/arch/x86/net/bpf_jit_comp32.c @@ -1627,8 +1627,7 @@ static int emit_kfunc_call(const struct bpf_prog *bpf_prog, u8 *end_addr, /* mov dword ptr [ebp+off],eax */ if (fm->ret_size) end_addr -= 3; - - jmp_offset = (u8 *)__bpf_call_base + insn->imm - end_addr; + jmp_offset = BPF_CALL_FUNC(insn->imm) - end_addr; if (!is_simm32(jmp_offset)) { pr_err("unsupported BPF kernel function jmp_offset:%lld\n", jmp_offset); @@ -2103,7 +2102,7 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image, break; } - func = (u8 *) __bpf_call_base + imm32; + func = BPF_CALL_FUNC(imm32); jmp_offset = func - (image + addrs[i]); if (!imm32 || !is_simm32(jmp_offset)) { diff --git a/include/linux/filter.h b/include/linux/filter.h index 99b6fc83825b..9924b581aa71 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -461,6 +461,8 @@ static inline bool insn_is_cast_user(const struct bpf_insn *insn) #define BPF_CALL_IMM(x) ((void *)(x) - (void *)__bpf_call_base) +#define BPF_CALL_FUNC(x) ((x) + (u8 *)__bpf_call_base) + #define BPF_EMIT_CALL(FUNC) \ ((struct bpf_insn) { \ .code = BPF_JMP | BPF_CALL, \ diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 4e07cc057d6f..9832e878fbb3 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -1278,7 +1278,7 @@ int bpf_jit_get_func_addr(const struct bpf_prog *prog, * and the helper with imm relative to it are both in core * kernel. */ - addr = (u8 *)__bpf_call_base + imm; + addr = BPF_CALL_FUNC(imm); } *func_addr = (unsigned long)addr;