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 X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7A668C11F66 for ; Thu, 1 Jul 2021 00:29:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E55C61407 for ; Thu, 1 Jul 2021 00:29:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236997AbhGAAc1 (ORCPT ); Wed, 30 Jun 2021 20:32:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236734AbhGAAc0 (ORCPT ); Wed, 30 Jun 2021 20:32:26 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16DD3C061756; Wed, 30 Jun 2021 17:29:57 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id o18so3793478pgu.10; Wed, 30 Jun 2021 17:29:57 -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:mime-version :content-transfer-encoding; bh=9x5BchN3NyN4XOrBBibcJFStLPbLfDkegNtVEHEhvow=; b=SOFrt3F5qaV4q0jBm86IO4GW5WMzQUAdG8f4Nd44/crdr4wwS6ErUOjaxhkucA9EdK 8oHc14WEhWq4YHWJlWbTLfMQpuXLgEr0rXz5lPcbhEoG2z1xXighHhOZTSta4vOnDpUM rUZmZOLGG3nMSmX5fQd2Fzs+Fyx8B6kSUQTYTxSMmXw4noZXdhNMO42Ar4ltV91XXN6K ov6pPvkr2ok5JGRCIr6nMfoul5B6B6nffSv5d5wSagQXXWlokahyBFrTt7EkE9nthuPw Gf4iNKBnHJLdba/V1Qx9mdnfeK1QCnjXES5X/7uBqa0lF+xlQk5LJ6jZl+1Fswb+Zls1 2v/Q== 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:mime-version :content-transfer-encoding; bh=9x5BchN3NyN4XOrBBibcJFStLPbLfDkegNtVEHEhvow=; b=ZZ3SowUsORmoYSlPC/qYnDW5n6jDLvlP7MSXd+Ddfw/Y2TZ+2LZirINuqJ5b6jWmgl UBMlTZqNlnhm5+k2CcBKhwW/RrZOYReIniTziTQFGpKeuqUt+KOVcAQnBwxoDZsaPcQA Sf05MNmOz4bYJ77HWsaGrJZcrloIT3HKPgisgNePwMN6NZ1T4yXFPX++/OHaYadxgesD L4eL791rvsgYTX9l0NEhru0/HrsRkGeirRRfVmSQHVoltAG0oTJrXIrXnXnOYDbyGpTV dSgIli71UPdF/qpcP0B3Y4zChChebYJpw9a4dDWuzUJ4ZpT/VsyAG9mrl6oSb5+byIww AG0w== X-Gm-Message-State: AOAM533Tvjqbm7HFUNMHnIvhJL8ZTJD/iTxan2+CiONrpFPYd1TCqtom GFbe/AfzRIITPXOBaiL6kg4gR9icH3o= X-Google-Smtp-Source: ABdhPJwT8aN3kYUd29I/p9mBW+gydx4/N2b8b2Esc7F4ySKx8vyFGuA16reoJ0Xm2RQLuePzsbV6Xg== X-Received: by 2002:a05:6a00:c85:b029:311:bfe1:e407 with SMTP id a5-20020a056a000c85b0290311bfe1e407mr1090611pfv.77.1625099396244; Wed, 30 Jun 2021 17:29:56 -0700 (PDT) Received: from localhost ([2402:3a80:11db:6f6:e6a8:37a6:1da7:fbc7]) by smtp.gmail.com with ESMTPSA id e4sm22498596pfa.29.2021.06.30.17.29.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Jun 2021 17:29:55 -0700 (PDT) From: Kumar Kartikeya Dwivedi To: netdev@vger.kernel.org Cc: Kumar Kartikeya Dwivedi , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= , Jesper Dangaard Brouer , "David S. Miller" , Jakub Kicinski , John Fastabend , Martin KaFai Lau , bpf@vger.kernel.org Subject: [PATCH net-next v5 0/5] Generic XDP improvements Date: Thu, 1 Jul 2021 05:57:54 +0530 Message-Id: <20210701002759.381983-1-memxor@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This small series makes some improvements to generic XDP mode and brings it closer to native XDP. Patch 1 splits out generic XDP processing into reusable parts, patch 2 adds pointer friendly wrappers for bitops (not have to cast back and forth the address of local pointer to unsigned long *), patch 3 implements generic cpumap support (details in commit) and patch 4 allows devmap bpf prog execution before generic_xdp_tx is called. Patch 5 just updates a couple of selftests to adapt to changes in behavior (in that specifying devmap/cpumap prog fd in generic mode is now allowed). Changelog: ---------- v4 -> v5 v4: https://lore.kernel.org/bpf/20210628114746.129669-1-memxor@gmail.com * Add comments and examples for new bitops macros (Alexei) v3 -> v4 v3: https://lore.kernel.org/bpf/20210622202835.1151230-1-memxor@gmail.com * Add detach now that attach of XDP program succeeds (Toke) * Clean up the test to use new ASSERT macros v2 -> v3 v2: https://lore.kernel.org/bpf/20210622195527.1110497-1-memxor@gmail.com * list_for_each_entry -> list_for_each_entry_safe (due to deletion of skb) v1 -> v2 v1: https://lore.kernel.org/bpf/20210620233200.855534-1-memxor@gmail.com * Move __ptr_{set,clear,test}_bit to bitops.h (Toke) Also changed argument order to match the bit op they wrap. * Remove map value size checking functions for cpumap/devmap (Toke) * Rework prog run for skb in cpu_map_kthread_run (Toke) * Set skb->dev to dst->dev after devmap prog has run * Don't set xdp rxq that will be overwritten in cpumap prog run Kumar Kartikeya Dwivedi (5): net: core: split out code to run generic XDP prog bitops: add non-atomic bitops for pointers bpf: cpumap: implement generic cpumap bpf: devmap: implement devmap prog execution for generic XDP bpf: tidy xdp attach selftests include/linux/bitops.h | 50 ++++++++ include/linux/bpf.h | 10 +- include/linux/netdevice.h | 2 + include/linux/skbuff.h | 10 +- include/linux/typecheck.h | 9 ++ kernel/bpf/cpumap.c | 115 +++++++++++++++--- kernel/bpf/devmap.c | 49 ++++++-- net/core/dev.c | 103 ++++++++-------- net/core/filter.c | 6 +- .../bpf/prog_tests/xdp_cpumap_attach.c | 43 +++---- .../bpf/prog_tests/xdp_devmap_attach.c | 39 +++--- 11 files changed, 299 insertions(+), 137 deletions(-) -- 2.31.1