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Thu, 16 Jul 2020 11:18:30 +0300 From: Roman Bolshakov To: Subject: [PATCH 4/4] net/colo: Match is-enabled probe to tracepoint Date: Thu, 16 Jul 2020 11:17:54 +0300 Message-ID: <20200716081754.22422-5-r.bolshakov@yadro.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200716081754.22422-1-r.bolshakov@yadro.com> References: <20200716081754.22422-1-r.bolshakov@yadro.com> MIME-Version: 1.0 X-Originating-IP: [172.17.204.212] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-02.corp.yadro.com (172.17.10.102) Received-SPF: pass client-ip=89.207.88.252; envelope-from=r.bolshakov@yadro.com; helo=mta-01.yadro.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/16 04:18:26 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=ham 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: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Li Zhijian , Jason Wang , Cameron Esfahani , Zhang Chen , Roman Bolshakov , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" 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. 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 --- net/colo-compare.c | 12 +++++++----- net/filter-rewriter.c | 8 ++++++-- net/trace-events | 2 -- 3 files changed, 13 insertions(+), 9 deletions(-) diff --git a/net/colo-compare.c b/net/colo-compare.c index 398b7546ff..9525ed703b 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -327,7 +327,7 @@ 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)); @@ -492,7 +492,7 @@ 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)) { + if (trace_event_get_state_backends(TRACE_COLO_COMPARE_TCP_INFO)) { qemu_hexdump((char *)ppkt->data, stderr, "colo-compare ppkt", ppkt->size); qemu_hexdump((char *)spkt->data, stderr, @@ -533,7 +533,8 @@ 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)) { + if (trace_event_get_state_backends( + TRACE_COLO_COMPARE_UDP_MISCOMPARE)) { qemu_hexdump((char *)ppkt->data, stderr, "colo-compare pri pkt", ppkt->size); qemu_hexdump((char *)spkt->data, stderr, "colo-compare sec pkt", @@ -576,7 +577,8 @@ 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)) { + if (trace_event_get_state_backends( + TRACE_COLO_COMPARE_ICMP_MISCOMPARE)) { qemu_hexdump((char *)ppkt->data, stderr, "colo-compare pri pkt", ppkt->size); qemu_hexdump((char *)spkt->data, stderr, "colo-compare sec pkt", @@ -597,7 +599,7 @@ 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..ff04165cc4 100644 --- a/net/filter-rewriter.c +++ b/net/filter-rewriter.c @@ -76,7 +76,9 @@ 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_event_get_state_backends( + TRACE_COLO_FILTER_REWRITER_CONN_OFFSET)) { 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), @@ -180,7 +182,9 @@ 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_event_get_state_backends( + TRACE_COLO_FILTER_REWRITER_CONN_OFFSET)) { 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), 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"