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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,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 2A5E5C433E4 for ; Mon, 29 Mar 2021 22:55:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDF5D619A0 for ; Mon, 29 Mar 2021 22:55:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231910AbhC2WzS (ORCPT ); Mon, 29 Mar 2021 18:55:18 -0400 Received: from mga04.intel.com ([192.55.52.120]:2470 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231135AbhC2WzN (ORCPT ); Mon, 29 Mar 2021 18:55:13 -0400 IronPort-SDR: IOqOlhleEfpT7gmx01PDNLslUkSo4Oi9YRily/3Gg8jLVq9Y+kWZ7nQGxL/mu1kLcDyhV+tOxs CS6MYGYf30xA== X-IronPort-AV: E=McAfee;i="6000,8403,9938"; a="189392992" X-IronPort-AV: E=Sophos;i="5.81,289,1610438400"; d="scan'208";a="189392992" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2021 15:55:13 -0700 IronPort-SDR: gctoSVdGo9Wx1ZeXdTkF/b5KjdO6neSzOtvD9U6jtmQPLQsDFhYXnRX4nOgjW/TU9193MhxzRd 5kIXWvdj1kfQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,289,1610438400"; d="scan'208";a="417884194" Received: from ranger.igk.intel.com ([10.102.21.164]) by orsmga008.jf.intel.com with ESMTP; 29 Mar 2021 15:55:10 -0700 From: Maciej Fijalkowski To: bpf@vger.kernel.org, netdev@vger.kernel.org, daniel@iogearbox.net, ast@kernel.org, andrii@kernel.org Cc: bjorn.topel@intel.com, magnus.karlsson@intel.com, ciara.loftus@intel.com, john.fastabend@gmail.com, toke@redhat.com, Maciej Fijalkowski Subject: [PATCH v5 bpf-next 05/17] selftests: xsk: simplify frame traversal in dumping thread Date: Tue, 30 Mar 2021 00:43:04 +0200 Message-Id: <20210329224316.17793-6-maciej.fijalkowski@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210329224316.17793-1-maciej.fijalkowski@intel.com> References: <20210329224316.17793-1-maciej.fijalkowski@intel.com> 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 Store offsets to each layer in a separate variables rather than compute them every single time. Signed-off-by: Björn Töpel Signed-off-by: Maciej Fijalkowski --- tools/testing/selftests/bpf/xdpxceiver.c | 47 +++++++++++------------- 1 file changed, 21 insertions(+), 26 deletions(-) diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c index 08058a3d9aec..cf30c7943ac0 100644 --- a/tools/testing/selftests/bpf/xdpxceiver.c +++ b/tools/testing/selftests/bpf/xdpxceiver.c @@ -658,45 +658,40 @@ static void tx_only_all(struct ifobject *ifobject) static void worker_pkt_dump(void) { - struct in_addr ipaddr; + struct ethhdr *ethhdr; + struct iphdr *iphdr; + struct udphdr *udphdr; + char s[128]; + int payload; + void *ptr; fprintf(stdout, "---------------------------------------\n"); for (int iter = 0; iter < num_frames - 1; iter++) { + ptr = pkt_buf[iter]->payload; + ethhdr = ptr; + iphdr = ptr + sizeof(*ethhdr); + udphdr = ptr + sizeof(*ethhdr) + sizeof(*iphdr); + /*extract L2 frame */ fprintf(stdout, "DEBUG>> L2: dst mac: "); for (int i = 0; i < ETH_ALEN; i++) - fprintf(stdout, "%02X", ((struct ethhdr *) - pkt_buf[iter]->payload)->h_dest[i]); + fprintf(stdout, "%02X", ethhdr->h_dest[i]); fprintf(stdout, "\nDEBUG>> L2: src mac: "); for (int i = 0; i < ETH_ALEN; i++) - fprintf(stdout, "%02X", ((struct ethhdr *) - pkt_buf[iter]->payload)->h_source[i]); + fprintf(stdout, "%02X", ethhdr->h_source[i]); /*extract L3 frame */ - fprintf(stdout, "\nDEBUG>> L3: ip_hdr->ihl: %02X\n", - ((struct iphdr *)(pkt_buf[iter]->payload + sizeof(struct ethhdr)))->ihl); - - ipaddr.s_addr = - ((struct iphdr *)(pkt_buf[iter]->payload + sizeof(struct ethhdr)))->saddr; - fprintf(stdout, "DEBUG>> L3: ip_hdr->saddr: %s\n", inet_ntoa(ipaddr)); - - ipaddr.s_addr = - ((struct iphdr *)(pkt_buf[iter]->payload + sizeof(struct ethhdr)))->daddr; - fprintf(stdout, "DEBUG>> L3: ip_hdr->daddr: %s\n", inet_ntoa(ipaddr)); - + fprintf(stdout, "\nDEBUG>> L3: ip_hdr->ihl: %02X\n", iphdr->ihl); + fprintf(stdout, "DEBUG>> L3: ip_hdr->saddr: %s\n", + inet_ntop(AF_INET, &iphdr->saddr, s, sizeof(s))); + fprintf(stdout, "DEBUG>> L3: ip_hdr->daddr: %s\n", + inet_ntop(AF_INET, &iphdr->daddr, s, sizeof(s))); /*extract L4 frame */ - fprintf(stdout, "DEBUG>> L4: udp_hdr->src: %d\n", - ntohs(((struct udphdr *)(pkt_buf[iter]->payload + - sizeof(struct ethhdr) + - sizeof(struct iphdr)))->source)); - - fprintf(stdout, "DEBUG>> L4: udp_hdr->dst: %d\n", - ntohs(((struct udphdr *)(pkt_buf[iter]->payload + - sizeof(struct ethhdr) + - sizeof(struct iphdr)))->dest)); + fprintf(stdout, "DEBUG>> L4: udp_hdr->src: %d\n", ntohs(udphdr->source)); + fprintf(stdout, "DEBUG>> L4: udp_hdr->dst: %d\n", ntohs(udphdr->dest)); /*extract L5 frame */ - int payload = *((uint32_t *)(pkt_buf[iter]->payload + PKT_HDR_SIZE)); + payload = *((uint32_t *)(ptr + PKT_HDR_SIZE)); if (payload == EOT) { print_verbose("End-of-transmission frame received\n"); -- 2.20.1