From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96034C77B61 for ; Sun, 9 Apr 2023 03:34:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229436AbjDIDel (ORCPT ); Sat, 8 Apr 2023 23:34:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229462AbjDIDek (ORCPT ); Sat, 8 Apr 2023 23:34:40 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A0FA64EDC for ; Sat, 8 Apr 2023 20:34:39 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id nh20-20020a17090b365400b0024496d637e1so7197084pjb.5 for ; Sat, 08 Apr 2023 20:34:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1681011279; x=1683603279; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=PoWiT0BrMtqOdVmk/sp57XFUcGah5ddNHNnKT2Q3CCY=; b=LSxl68hJvWzflYWDAEvnGHwDKbh2Q/mk+WsQSf/JpEf0epE11J8R0ZQ5gzVaHXjbQR b1IUUsTKyEu03PMJakrFgcPJ6+Urc3OFdoPZT7TKJeV7hROnW3b9WBZvXV7vnrax1ME3 Wen6ggca0LBC1GwTqp8F/2osstlanLyEzdAcMIZpgXaxT3q7lSsWv9iPR4hITsboV0K5 7SCBgIWlJkx366pLwUpBty+T8k1mCC4UQqyMWKLk4q1RmBhBl8BiHALUhwGUA/SmsHw3 YEInsjFj87x7HSCGVw45mV5Lkc1JgzUPzX0J49Qzo0GBw7dq73EEVnNCSr+j9RGL3mkt qQzg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1681011279; x=1683603279; 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=PoWiT0BrMtqOdVmk/sp57XFUcGah5ddNHNnKT2Q3CCY=; b=SstoR64Sk/lut1RKySfiDBFMP1AENeqOB6Dp9dF8/gY7rUDyGqGdPe93EjM+MXJrhV wJHY0SQOAaYUlwSX/C9FophxVMJfVBE3dsvr0vLCXD27pI+B88CiYUCTL6yWYDZ+Chdw fxGdvjDJqez2nRAd1ArOmrIr9nikz3j/SLUF237PQPdIgHzVAlAEMyiqDnoPlEHbPedG iQ36bIXEwk5qe3czbijWKFBqmlg4G6Fq0K8rzkFZeTONji9FZOPQU7R+Vap41yapyt4K 35ymLijTK2BkJrxtm7kETYDztZeiLvD0+kyOUc2XTr9glX1V1gsBJf69nFosCz9XCao2 FaHA== X-Gm-Message-State: AAQBX9cXGUX9s/D3Uo6f+0SZUFWYj/iBUOTwYME5ZMygGepBMxLjZU+d QAy86eBct0oYARpXNVMxA41ZPcPtSM3atQ== X-Google-Smtp-Source: AKy350bzTHOY/oDYVgWkIB7AGPyowYK3nt5uSTosSxklzvyzotF/+WAYu0JgR0eCc2upz/GJSaqDYg== X-Received: by 2002:a17:90b:1c04:b0:23f:b369:c159 with SMTP id oc4-20020a17090b1c0400b0023fb369c159mr4333411pjb.49.1681011278883; Sat, 08 Apr 2023 20:34:38 -0700 (PDT) Received: from gatsby.corp.tfbnw.net (75-172-126-232.tukw.qwest.net. [75.172.126.232]) by smtp.gmail.com with ESMTPSA id x2-20020a170902fe8200b001a212a93295sm5185877plm.189.2023.04.08.20.34.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Apr 2023 20:34:38 -0700 (PDT) From: Joanne Koong To: bpf@vger.kernel.org Cc: andrii@kernel.org, ast@kernel.org, daniel@iogearbox.net, Joanne Koong Subject: [PATCH v1 bpf-next 0/5] Dynptr convenience helpers Date: Sat, 8 Apr 2023 20:34:26 -0700 Message-Id: <20230409033431.3992432-1-joannelkoong@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This patchset is the 3rd in the dynptr series. The 1st (dynptr fundamentals) can be found here [0] and the second (skb + xdp dynptrs) can be found here [1]. This patchset adds the following convenience helpers for interacting with dynptrs: int bpf_dynptr_trim(struct bpf_dynptr *ptr, __u32 len) __ksym; int bpf_dynptr_advance(struct bpf_dynptr *ptr, __u32 len) __ksym; int bpf_dynptr_is_null(const struct bpf_dynptr *ptr) __ksym; int bpf_dynptr_is_rdonly(const struct bpf_dynptr *ptr) __ksym; __u32 bpf_dynptr_get_size(const struct bpf_dynptr *ptr) __ksym; __u32 bpf_dynptr_get_offset(const struct bpf_dynptr *ptr) __ksym; int bpf_dynptr_clone(const struct bpf_dynptr *ptr, struct bpf_dynptr *clone__init) __ksym; [0] https://lore.kernel.org/bpf/20220523210712.3641569-1-joannelkoong@gmail.com/ [1] https://lore.kernel.org/bpf/20230301154953.641654-1-joannelkoong@gmail.com/ Joanne Koong (5): bpf: Add bpf_dynptr_trim and bpf_dynptr_advance bpf: Add bpf_dynptr_is_null and bpf_dynptr_is_rdonly bpf: Add bpf_dynptr_get_size and bpf_dynptr_get_offset bpf: Add bpf_dynptr_clone selftests/bpf: add tests for dynptr convenience helpers include/linux/bpf.h | 2 +- kernel/bpf/helpers.c | 108 +++++- kernel/bpf/verifier.c | 125 ++++++- kernel/trace/bpf_trace.c | 4 +- tools/testing/selftests/bpf/bpf_kfuncs.h | 8 + .../testing/selftests/bpf/prog_tests/dynptr.c | 6 + .../testing/selftests/bpf/progs/dynptr_fail.c | 313 +++++++++++++++++ .../selftests/bpf/progs/dynptr_success.c | 320 ++++++++++++++++++ 8 files changed, 864 insertions(+), 22 deletions(-) -- 2.34.1