From patchwork Fri Jul 14 11:36:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Fijalkowski, Maciej" X-Patchwork-Id: 13313563 X-Patchwork-Delegate: bpf@iogearbox.net Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8636B13702; Fri, 14 Jul 2023 11:37:57 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 48371E65; Fri, 14 Jul 2023 04:37:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689334676; x=1720870676; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=lJSHCbzJzx9UajiPfimnxIFQzTSub+kwsAojlo4Vs7Q=; b=GEugTzbZ3mcN/XLU+1KgYFJVQDGZE4cAD9SQEGi0EcL5yK1aoJSbXp6o lTBQFXCCsIJmjNo5TACCUSmzGH8z62BcjaEnqoFdabg8zfiZsxWaE9wLd d2Ikjx+1pqimd6+sjhwaap1M4RIYlcmkUsTddOgY221isyKHxPipg0Ife Ffvp0vqbYNfsadk6kw1EPU6g0wzw3pgc99Rb2reYYkIWR1LFdo5vJ4xhG t5K42Q6DkYlPk0IpEAXhMTXORLXXBtUS9a6BoIUbcymuZZaZ9plgEbr1D xA7mhIdWQDWEacKpMuy9guzmi3VqH+7t8sHjVOxfwWApio6L01+kpWQbQ A==; X-IronPort-AV: E=McAfee;i="6600,9927,10770"; a="345048354" X-IronPort-AV: E=Sophos;i="6.01,205,1684825200"; d="scan'208";a="345048354" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jul 2023 04:37:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10770"; a="846425317" X-IronPort-AV: E=Sophos;i="6.01,205,1684825200"; d="scan'208";a="846425317" Received: from boxer.igk.intel.com ([10.102.20.173]) by orsmga004.jf.intel.com with ESMTP; 14 Jul 2023 04:37:53 -0700 From: Maciej Fijalkowski To: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org Cc: netdev@vger.kernel.org, magnus.karlsson@intel.com, bjorn@kernel.org, tirthendu.sarkar@intel.com, toke@kernel.org, kuba@kernel.org, horms@kernel.org, Maciej Fijalkowski Subject: [PATCH v6 bpf-next 23/24] selftests/xsk: add test for too many frags Date: Fri, 14 Jul 2023 13:36:39 +0200 Message-Id: <20230714113640.556893-24-maciej.fijalkowski@intel.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230714113640.556893-1-maciej.fijalkowski@intel.com> References: <20230714113640.556893-1-maciej.fijalkowski@intel.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_PASS,SPF_NONE,T_SCC_BODY_TEXT_LINE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: bpf@iogearbox.net From: Magnus Karlsson Add a test that will exercise maximum number of supported fragments. This number depends on mode of the test - for SKB and DRV it will be 18 whereas for ZC this is defined by a value from NETDEV_A_DEV_XDP_ZC_MAX_SEGS netlink attribute. Signed-off-by: Magnus Karlsson Signed-off-by: Maciej Fijalkowski # made use of new netlink attribute --- tools/testing/selftests/bpf/xskxceiver.c | 54 +++++++++++++++++++++++- tools/testing/selftests/bpf/xskxceiver.h | 3 ++ 2 files changed, 55 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c index 4767d09d6893..3ff436706640 100644 --- a/tools/testing/selftests/bpf/xskxceiver.c +++ b/tools/testing/selftests/bpf/xskxceiver.c @@ -1982,6 +1982,48 @@ static int testapp_poll_rxq_tmout(struct test_spec *test) return testapp_validate_traffic_single_thread(test, test->ifobj_rx); } +static int testapp_too_many_frags(struct test_spec *test) +{ + struct pkt pkts[2 * XSK_DESC__MAX_SKB_FRAGS + 2] = {}; + u32 max_frags, i; + + test_spec_set_name(test, "TOO_MANY_FRAGS"); + if (test->mode == TEST_MODE_ZC) + max_frags = test->ifobj_tx->xdp_zc_max_segs; + else + max_frags = XSK_DESC__MAX_SKB_FRAGS; + + test->mtu = MAX_ETH_JUMBO_SIZE; + + /* Valid packet for synch */ + pkts[0].len = MIN_PKT_SIZE; + pkts[0].valid = true; + + /* One valid packet with the max amount of frags */ + for (i = 1; i < max_frags + 1; i++) { + pkts[i].len = MIN_PKT_SIZE; + pkts[i].options = XDP_PKT_CONTD; + pkts[i].valid = true; + } + pkts[max_frags].options = 0; + + /* An invalid packet with the max amount of frags but signals packet + * continues on the last frag + */ + for (i = max_frags + 1; i < 2 * max_frags + 1; i++) { + pkts[i].len = MIN_PKT_SIZE; + pkts[i].options = XDP_PKT_CONTD; + pkts[i].valid = false; + } + + /* Valid packet for synch */ + pkts[2 * max_frags + 1].len = MIN_PKT_SIZE; + pkts[2 * max_frags + 1].valid = true; + + pkt_stream_generate_custom(test, pkts, 2 * max_frags + 2); + return testapp_validate_traffic(test); +} + static int xsk_load_xdp_programs(struct ifobject *ifobj) { ifobj->xdp_progs = xsk_xdp_progs__open_and_load(); @@ -2039,9 +2081,14 @@ static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char * } if (query_opts.feature_flags & NETDEV_XDP_ACT_RX_SG) ifobj->multi_buff_supp = true; - if (query_opts.feature_flags & NETDEV_XDP_ACT_XSK_ZEROCOPY) - if (query_opts.xdp_zc_max_segs > 1) + if (query_opts.feature_flags & NETDEV_XDP_ACT_XSK_ZEROCOPY) { + if (query_opts.xdp_zc_max_segs > 1) { ifobj->multi_buff_zc_supp = true; + ifobj->xdp_zc_max_segs = query_opts.xdp_zc_max_segs; + } else { + ifobj->xdp_zc_max_segs = 0; + } + } } static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_type type) @@ -2170,6 +2217,9 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_ test->mtu = MAX_ETH_JUMBO_SIZE; ret = testapp_xdp_metadata_count(test); break; + case TEST_TYPE_TOO_MANY_FRAGS: + ret = testapp_too_many_frags(test); + break; default: break; } diff --git a/tools/testing/selftests/bpf/xskxceiver.h b/tools/testing/selftests/bpf/xskxceiver.h index 9e1f66e0a3b6..233b66cef64a 100644 --- a/tools/testing/selftests/bpf/xskxceiver.h +++ b/tools/testing/selftests/bpf/xskxceiver.h @@ -53,6 +53,7 @@ #define XSK_UMEM__LARGE_FRAME_SIZE (3 * 1024) #define XSK_UMEM__MAX_FRAME_SIZE (4 * 1024) #define XSK_DESC__INVALID_OPTION (0xffff) +#define XSK_DESC__MAX_SKB_FRAGS 18 #define HUGEPAGE_SIZE (2 * 1024 * 1024) #define PKT_DUMP_NB_TO_PRINT 16 @@ -93,6 +94,7 @@ enum test_type { TEST_TYPE_UNALIGNED_MB, TEST_TYPE_ALIGNED_INV_DESC_MB, TEST_TYPE_UNALIGNED_INV_DESC_MB, + TEST_TYPE_TOO_MANY_FRAGS, TEST_TYPE_MAX }; @@ -155,6 +157,7 @@ struct ifobject { int ifindex; int mtu; u32 bind_flags; + u32 xdp_zc_max_segs; bool tx_on; bool rx_on; bool use_poll;