From patchwork Sun Apr 4 20:02:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pedro Tammela X-Patchwork-Id: 415196 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=-12.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, 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 58C25C433ED for ; Sun, 4 Apr 2021 20:04:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3612361382 for ; Sun, 4 Apr 2021 20:04:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231562AbhDDUEv (ORCPT ); Sun, 4 Apr 2021 16:04:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231445AbhDDUEk (ORCPT ); Sun, 4 Apr 2021 16:04:40 -0400 Received: from mail-qk1-x731.google.com (mail-qk1-x731.google.com [IPv6:2607:f8b0:4864:20::731]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9947BC061756; Sun, 4 Apr 2021 13:04:33 -0700 (PDT) Received: by mail-qk1-x731.google.com with SMTP id q26so9855974qkm.6; Sun, 04 Apr 2021 13:04:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=HlGPj7kENQWAqZAKMcG5RxVYRrzRUc0vMrF8iaMnLfo=; b=foUak0moVfnX1jh/tPE2Kp2o575GleB5RoWRsdJJAdWsk4nZo04BOl/+AJo5d5eqPU 3dlO2r7CplDCwa/xtt8EGOB8G7Biyn9ZDYcGSjIO32BHBJ2sbm+lvvl0q14P5J0UJvQQ /9T0Ky50k6laQRhqw9DASNeRRA4zgMszuckRU9cFEFzIPI6SIRVbAGTq9hh3ciMNo6KC w1NRGtZHt7H/33PDLZ1OtvjUDKgKiNIv3iqMPaHczvE4Vc7XlmebHm/P9ydpKG27RlOl KgFJCwksP2qmcITUya3dT+hHcYBROD+sp9WLUCkzOBD81PjIWUD/dmY1qpt0gLzs787N T3IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HlGPj7kENQWAqZAKMcG5RxVYRrzRUc0vMrF8iaMnLfo=; b=Ww6SWNgp/TpyRVlN5rO52gKknXE+PnuR0cLnmq/Z/rnfJ5G5Rpb5o3zWHpDl+OY/qP fpwTQUbOWcF7ErUvBaoGyfLIlx8/zIcj0Rb16EdkMNVtfN0K5woibED9KHm50LLweye6 7N6CoIFqV7JZPB2TjXuF7xg4en4M+xc0I0HDpVaR8/gD8YQ5/8hnXd34Xf1gGDRrlkZV AbiwreWDo0tElxuackELS3lEBltAHyIYzbAA4cg24pWXWZGLIle91F29oL0GH3Ku+mlW raRW5Cck7i3HTfqkUp1oIhH7tRdhly6Eb1/zGSr8acnsVoHdQO+qIK9befINWn4qdAFt wjTg== X-Gm-Message-State: AOAM5309vYPPbkT1H/j9BA5smiV12ZRwipSeuTQ8IETMWWBcNkjHKlkL MRy904sXADfA/C9WzAuq+/I= X-Google-Smtp-Source: ABdhPJwzBRs9KvwduFiMGOw+7eqDxgqQRSpu6SiAW2+HyblAXlmQRz02KPfKIy2dtdEV1k41NTLQdg== X-Received: by 2002:a05:620a:4116:: with SMTP id j22mr21509049qko.446.1617566672856; Sun, 04 Apr 2021 13:04:32 -0700 (PDT) Received: from localhost.localdomain ([179.218.4.27]) by smtp.gmail.com with ESMTPSA id d24sm12163480qkl.49.2021.04.04.13.04.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Apr 2021 13:04:32 -0700 (PDT) From: Pedro Tammela X-Google-Original-From: Pedro Tammela To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Shuah Khan , Pedro Tammela , David Verbeiren , Matthieu Baerts , netdev@vger.kernel.org (open list:BPF (Safe dynamic programs and tools)), bpf@vger.kernel.org (open list:BPF (Safe dynamic programs and tools)), linux-kernel@vger.kernel.org (open list), linux-kselftest@vger.kernel.org (open list:KERNEL SELFTEST FRAMEWORK) Subject: [PATCH bpf-next 3/3] bpf: selftests: update array map tests for per-cpu batched ops Date: Sun, 4 Apr 2021 17:02:48 -0300 Message-Id: <20210404200256.300532-4-pctammela@mojatatu.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210404200256.300532-1-pctammela@mojatatu.com> References: <20210404200256.300532-1-pctammela@mojatatu.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Follows the same logic as the hashtable tests. Signed-off-by: Pedro Tammela --- .../bpf/map_tests/array_map_batch_ops.c | 114 +++++++++++++----- 1 file changed, 85 insertions(+), 29 deletions(-) diff --git a/tools/testing/selftests/bpf/map_tests/array_map_batch_ops.c b/tools/testing/selftests/bpf/map_tests/array_map_batch_ops.c index e42ea1195d18..e71b5fbf41b4 100644 --- a/tools/testing/selftests/bpf/map_tests/array_map_batch_ops.c +++ b/tools/testing/selftests/bpf/map_tests/array_map_batch_ops.c @@ -7,35 +7,68 @@ #include #include +#include #include +typedef BPF_PERCPU_TYPE(int) pcpu_map_value_t; + static void map_batch_update(int map_fd, __u32 max_entries, int *keys, - int *values) + void *values, bool is_pcpu) { - int i, err; + unsigned int nr_cpus = bpf_num_possible_cpus(); + pcpu_map_value_t *v; + int i, j, err; + int offset = 0; DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, opts, .elem_flags = 0, .flags = 0, ); + if (is_pcpu) + v = values; + for (i = 0; i < max_entries; i++) { keys[i] = i; - values[i] = i + 1; + if (is_pcpu) + for (j = 0; j < nr_cpus; j++) + bpf_percpu(v + offset, j) = i + 1 + j; + else + ((int *)values)[i] = i + 1; + offset += nr_cpus; } err = bpf_map_update_batch(map_fd, keys, values, &max_entries, &opts); CHECK(err, "bpf_map_update_batch()", "error:%s\n", strerror(errno)); } -static void map_batch_verify(int *visited, __u32 max_entries, - int *keys, int *values) +static void map_batch_verify(int *visited, __u32 max_entries, int *keys, + void *values, bool is_pcpu) { - int i; + unsigned int nr_cpus = bpf_num_possible_cpus(); + pcpu_map_value_t *v; + int i, j; + int offset = 0; + + if (is_pcpu) + v = values; memset(visited, 0, max_entries * sizeof(*visited)); for (i = 0; i < max_entries; i++) { - CHECK(keys[i] + 1 != values[i], "key/value checking", - "error: i %d key %d value %d\n", i, keys[i], values[i]); + if (is_pcpu) { + for (j = 0; j < nr_cpus; j++) { + int value = bpf_percpu(v + offset, j); + CHECK(keys[i] + j + 1 != value, + "key/value checking", + "error: i %d j %d key %d value %d\n", i, + j, keys[i], value); + } + } else { + CHECK(keys[i] + 1 != ((int *)values)[i], + "key/value checking", + "error: i %d key %d value %d\n", i, keys[i], + ((int *)values)[i]); + } + offset += nr_cpus; visited[i] = 1; } for (i = 0; i < max_entries; i++) { @@ -44,19 +77,22 @@ static void map_batch_verify(int *visited, __u32 max_entries, } } -void test_array_map_batch_ops(void) +void __test_map_lookup_and_update_batch(bool is_pcpu) { + unsigned int nr_cpus = bpf_num_possible_cpus(); struct bpf_create_map_attr xattr = { .name = "array_map", - .map_type = BPF_MAP_TYPE_ARRAY, + .map_type = is_pcpu ? BPF_MAP_TYPE_PERCPU_ARRAY : + BPF_MAP_TYPE_ARRAY, .key_size = sizeof(int), .value_size = sizeof(int), }; - int map_fd, *keys, *values, *visited; + int map_fd, *keys, *visited; __u32 count, total, total_success; const __u32 max_entries = 10; __u64 batch = 0; - int err, step; + int err, step, value_size; + void *values; DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, opts, .elem_flags = 0, .flags = 0, @@ -67,22 +103,24 @@ void test_array_map_batch_ops(void) CHECK(map_fd == -1, "bpf_create_map_xattr()", "error:%s\n", strerror(errno)); - keys = malloc(max_entries * sizeof(int)); - values = malloc(max_entries * sizeof(int)); - visited = malloc(max_entries * sizeof(int)); + if (is_pcpu) + value_size = sizeof(pcpu_map_value_t) * nr_cpus; + else + value_size = sizeof(int); + + keys = malloc(max_entries * sizeof(*keys)); + values = calloc(max_entries, value_size); + visited = malloc(max_entries * sizeof(*visited)); CHECK(!keys || !values || !visited, "malloc()", "error:%s\n", strerror(errno)); - /* populate elements to the map */ - map_batch_update(map_fd, max_entries, keys, values); - /* test 1: lookup in a loop with various steps. */ total_success = 0; for (step = 1; step < max_entries; step++) { - map_batch_update(map_fd, max_entries, keys, values); - map_batch_verify(visited, max_entries, keys, values); + map_batch_update(map_fd, max_entries, keys, values, is_pcpu); + map_batch_verify(visited, max_entries, keys, values, is_pcpu); memset(keys, 0, max_entries * sizeof(*keys)); - memset(values, 0, max_entries * sizeof(*values)); + memset(values, 0, max_entries * value_size); batch = 0; total = 0; /* iteratively lookup/delete elements with 'step' @@ -91,10 +129,10 @@ void test_array_map_batch_ops(void) count = step; while (true) { err = bpf_map_lookup_batch(map_fd, - total ? &batch : NULL, &batch, - keys + total, - values + total, - &count, &opts); + total ? &batch : NULL, + &batch, keys + total, + values + total * value_size, + &count, &opts); CHECK((err && errno != ENOENT), "lookup with steps", "error: %s\n", strerror(errno)); @@ -108,7 +146,7 @@ void test_array_map_batch_ops(void) CHECK(total != max_entries, "lookup with steps", "total = %u, max_entries = %u\n", total, max_entries); - map_batch_verify(visited, max_entries, keys, values); + map_batch_verify(visited, max_entries, keys, values, is_pcpu); total_success++; } @@ -116,9 +154,27 @@ void test_array_map_batch_ops(void) CHECK(total_success == 0, "check total_success", "unexpected failure\n"); - printf("%s:PASS\n", __func__); - free(keys); - free(values); free(visited); + + if (!is_pcpu) + free(values); +} + +void array_map_batch_ops(void) +{ + __test_map_lookup_and_update_batch(false); + printf("test_%s:PASS\n", __func__); +} + +void array_percpu_map_batch_ops(void) +{ + __test_map_lookup_and_update_batch(true); + printf("test_%s:PASS\n", __func__); +} + +void test_array_map_batch_ops(void) +{ + array_map_batch_ops(); + array_percpu_map_batch_ops(); }