From patchwork Thu Aug 13 05:22:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 11711915 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6E2FD138C for ; Thu, 13 Aug 2020 07:47:14 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3186220716 for ; Thu, 13 Aug 2020 07:47:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZM5pIV38" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3186220716 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:55802 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k67xB-0006d4-DK for patchwork-qemu-devel@patchwork.kernel.org; Thu, 13 Aug 2020 03:47:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42256) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k67vS-00036X-4w for qemu-devel@nongnu.org; Thu, 13 Aug 2020 03:45:26 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:24279 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1k67vP-0002fL-2L for qemu-devel@nongnu.org; Thu, 13 Aug 2020 03:45:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1597304722; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZAVjYWWvsBeAVZWLNbfusO4YBSjm/+sDD4ovgg1w2EM=; b=ZM5pIV38bBf99xy+hJcRUr4bb+122lF44y830p6Wf0NiLtE9rEUnbKIr6ZA5H+iqPRTU3/ jsgZ9dRhiwIXPSIqqcqOpM892C3gMi+R7rG4n5rF1qYnLgzuU6Ih2ZPlU9woEos2i2wSj7 Uo81aK/eqM+TijdPDqEAHFERrP85eME= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-416-TcbFGvqhMzKIW1kjJ_-SiQ-1; Thu, 13 Aug 2020 03:45:16 -0400 X-MC-Unique: TcbFGvqhMzKIW1kjJ_-SiQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 574281005E5A; Thu, 13 Aug 2020 07:45:14 +0000 (UTC) Received: from localhost (ovpn-114-3.ams2.redhat.com [10.36.114.3]) by smtp.corp.redhat.com (Postfix) with ESMTP id 19D4B60C2A; Thu, 13 Aug 2020 07:44:55 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PULL 4/9] net/colo: Match is-enabled probe to tracepoint Date: Thu, 13 Aug 2020 06:22:52 +0100 Message-Id: <20200813052257.226142-5-stefanha@redhat.com> In-Reply-To: <20200813052257.226142-1-stefanha@redhat.com> References: <20200813052257.226142-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=stefanha@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.61; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/13 03:44:40 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Sagar Karandikar , "Michael S. Tsirkin" , Jason Wang , Alistair Francis , Gerd Hoffmann , Li Zhijian , qemu-block@nongnu.org, Juan Quintela , David Hildenbrand , Aleksandar Markovic , =?utf-8?q?Marc-Andr?= =?utf-8?q?=C3=A9_Lureau?= , =?utf-8?q?Philippe?= =?utf-8?q?_Mathieu-Daud=C3=A9?= , Aleksandar Rikalo , "Dr. David Alan Gilbert" , Cameron Esfahani , Alex Williamson , Stefan Hajnoczi , Palmer Dabbelt , David Gibson , Kevin Wolf , qemu-riscv@nongnu.org, Bastian Koppelmann , Roman Bolshakov , Max Reitz , Zhang Chen , qemu-ppc@nongnu.org, Paolo Bonzini , Aurelien Jarno , Stefan Berger Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Roman Bolshakov Build of QEMU with dtrace fails on macOS: LINK x86_64-softmmu/qemu-system-x86_64 error: probe colo_compare_miscompare doesn't exist error: Could not register probes ld: error creating dtrace DOF section for architecture x86_64 The reason of the error is explained by Adam Leventhal [1]: Note that is-enabled probes don't have the stability magic so I'm not sure how things would work if only is-enabled probes were used. net/colo code uses is-enabled probes to determine if other probes should be used but colo_compare_miscompare itself is not used explicitly. Linker doesn't include the symbol and build fails. The issue can be resolved if is-enabled probe matches the actual trace point that is used inside the test. Packet dump toggle is replaced with a compile-time conditional definition. 1. http://markmail.org/message/6grq2ygr5nwdwsnb Fixes: f4b618360e ("colo-compare: add TCP, UDP, ICMP packet comparison") Cc: Philippe Mathieu-Daudé Cc: Cameron Esfahani Signed-off-by: Roman Bolshakov Reviewed-by: Zhang Chen Message-id: 20200717093517.73397-5-r.bolshakov@yadro.com Signed-off-by: Stefan Hajnoczi --- net/colo-compare.c | 42 ++++++++++++++++++++++-------------------- net/filter-rewriter.c | 10 ++++++++-- net/trace-events | 2 -- 3 files changed, 30 insertions(+), 24 deletions(-) diff --git a/net/colo-compare.c b/net/colo-compare.c index 2c20de1537..0b3215dee0 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -54,6 +54,8 @@ static NotifierList colo_compare_notifiers = #define REGULAR_PACKET_CHECK_MS 3000 #define DEFAULT_TIME_OUT_MS 3000 +/* #define DEBUG_COLO_PACKETS */ + static QemuMutex colo_compare_mutex; static bool colo_compare_active; static QemuMutex event_mtx; @@ -328,7 +330,7 @@ static int colo_compare_packet_payload(Packet *ppkt, uint16_t len) { - if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { + if (trace_event_get_state_backends(TRACE_COLO_COMPARE_IP_INFO)) { char pri_ip_src[20], pri_ip_dst[20], sec_ip_src[20], sec_ip_dst[20]; strcpy(pri_ip_src, inet_ntoa(ppkt->ip->ip_src)); @@ -493,12 +495,12 @@ sec: g_queue_push_head(&conn->primary_list, ppkt); g_queue_push_head(&conn->secondary_list, spkt); - if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { - qemu_hexdump((char *)ppkt->data, stderr, - "colo-compare ppkt", ppkt->size); - qemu_hexdump((char *)spkt->data, stderr, - "colo-compare spkt", spkt->size); - } +#ifdef DEBUG_COLO_PACKETS + qemu_hexdump((char *)ppkt->data, stderr, + "colo-compare ppkt", ppkt->size); + qemu_hexdump((char *)spkt->data, stderr, + "colo-compare spkt", spkt->size); +#endif colo_compare_inconsistency_notify(s); } @@ -534,12 +536,12 @@ static int colo_packet_compare_udp(Packet *spkt, Packet *ppkt) ppkt->size - offset)) { trace_colo_compare_udp_miscompare("primary pkt size", ppkt->size); trace_colo_compare_udp_miscompare("Secondary pkt size", spkt->size); - if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { - qemu_hexdump((char *)ppkt->data, stderr, "colo-compare pri pkt", - ppkt->size); - qemu_hexdump((char *)spkt->data, stderr, "colo-compare sec pkt", - spkt->size); - } +#ifdef DEBUG_COLO_PACKETS + qemu_hexdump((char *)ppkt->data, stderr, "colo-compare pri pkt", + ppkt->size); + qemu_hexdump((char *)spkt->data, stderr, "colo-compare sec pkt", + spkt->size); +#endif return -1; } else { return 0; @@ -577,12 +579,12 @@ static int colo_packet_compare_icmp(Packet *spkt, Packet *ppkt) ppkt->size); trace_colo_compare_icmp_miscompare("Secondary pkt size", spkt->size); - if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { - qemu_hexdump((char *)ppkt->data, stderr, "colo-compare pri pkt", - ppkt->size); - qemu_hexdump((char *)spkt->data, stderr, "colo-compare sec pkt", - spkt->size); - } +#ifdef DEBUG_COLO_PACKETS + qemu_hexdump((char *)ppkt->data, stderr, "colo-compare pri pkt", + ppkt->size); + qemu_hexdump((char *)spkt->data, stderr, "colo-compare sec pkt", + spkt->size); +#endif return -1; } else { return 0; @@ -598,7 +600,7 @@ static int colo_packet_compare_other(Packet *spkt, Packet *ppkt) uint16_t offset = ppkt->vnet_hdr_len; trace_colo_compare_main("compare other"); - if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { + if (trace_event_get_state_backends(TRACE_COLO_COMPARE_IP_INFO)) { char pri_ip_src[20], pri_ip_dst[20], sec_ip_src[20], sec_ip_dst[20]; strcpy(pri_ip_src, inet_ntoa(ppkt->ip->ip_src)); diff --git a/net/filter-rewriter.c b/net/filter-rewriter.c index 1aaad101b6..576b019d09 100644 --- a/net/filter-rewriter.c +++ b/net/filter-rewriter.c @@ -76,11 +76,14 @@ static int handle_primary_tcp_pkt(RewriterState *rf, struct tcp_hdr *tcp_pkt; tcp_pkt = (struct tcp_hdr *)pkt->transport_header; - if (trace_event_get_state_backends(TRACE_COLO_FILTER_REWRITER_DEBUG)) { + if (trace_event_get_state_backends(TRACE_COLO_FILTER_REWRITER_PKT_INFO)) { trace_colo_filter_rewriter_pkt_info(__func__, inet_ntoa(pkt->ip->ip_src), inet_ntoa(pkt->ip->ip_dst), ntohl(tcp_pkt->th_seq), ntohl(tcp_pkt->th_ack), tcp_pkt->th_flags); + } + if (trace_event_get_state_backends( + TRACE_COLO_FILTER_REWRITER_CONN_OFFSET)) { trace_colo_filter_rewriter_conn_offset(conn->offset); } @@ -180,11 +183,14 @@ static int handle_secondary_tcp_pkt(RewriterState *rf, tcp_pkt = (struct tcp_hdr *)pkt->transport_header; - if (trace_event_get_state_backends(TRACE_COLO_FILTER_REWRITER_DEBUG)) { + if (trace_event_get_state_backends(TRACE_COLO_FILTER_REWRITER_PKT_INFO)) { trace_colo_filter_rewriter_pkt_info(__func__, inet_ntoa(pkt->ip->ip_src), inet_ntoa(pkt->ip->ip_dst), ntohl(tcp_pkt->th_seq), ntohl(tcp_pkt->th_ack), tcp_pkt->th_flags); + } + if (trace_event_get_state_backends( + TRACE_COLO_FILTER_REWRITER_CONN_OFFSET)) { trace_colo_filter_rewriter_conn_offset(conn->offset); } diff --git a/net/trace-events b/net/trace-events index fa49c71533..bfaff7891d 100644 --- a/net/trace-events +++ b/net/trace-events @@ -17,10 +17,8 @@ colo_compare_udp_miscompare(const char *sta, int size) ": %s = %d" colo_compare_icmp_miscompare(const char *sta, int size) ": %s = %d" colo_compare_ip_info(int psize, const char *sta, const char *stb, int ssize, const char *stc, const char *std) "ppkt size = %d, ip_src = %s, ip_dst = %s, spkt size = %d, ip_src = %s, ip_dst = %s" colo_old_packet_check_found(int64_t old_time) "%" PRId64 -colo_compare_miscompare(void) "" colo_compare_tcp_info(const char *pkt, uint32_t seq, uint32_t ack, int hdlen, int pdlen, int offset, int flags) "%s: seq/ack= %u/%u hdlen= %d pdlen= %d offset= %d flags=%d" # filter-rewriter.c -colo_filter_rewriter_debug(void) "" colo_filter_rewriter_pkt_info(const char *func, const char *src, const char *dst, uint32_t seq, uint32_t ack, uint32_t flag) "%s: src/dst: %s/%s p: seq/ack=%u/%u flags=0x%x" colo_filter_rewriter_conn_offset(uint32_t offset) ": offset=%u"