From owner-freebsd-net@freebsd.org Wed Oct 16 02:15:40 2019 Return-Path: Delivered-To: freebsd-net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id EF077159AC7 for ; Wed, 16 Oct 2019 02:15:40 +0000 (UTC) (envelope-from vm.finance2@gmail.com) Received: from mail-io1-xd29.google.com (mail-io1-xd29.google.com [IPv6:2607:f8b0:4864:20::d29]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46tG9R5xXtz46qk for ; Wed, 16 Oct 2019 02:15:39 +0000 (UTC) (envelope-from vm.finance2@gmail.com) Received: by mail-io1-xd29.google.com with SMTP id v2so51629807iob.10 for ; Tue, 15 Oct 2019 19:15:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=pnWwC3OEtJp4qDh3ydbFeFB9cPwe6pLry5NZ3z32/bg=; b=dcuGeSG6HTT81aXpS8a/7gUpPDfBnuurlAgSJHMIMqh2DqSfknfRUbi9XiEdJvPPy4 U99T2m/qVQIIXnrrEctNOJHo0ovCEkUERi5WT7dr/aJtoDPwz/W/TLpEx70SioaUZaVI FITIkHoRTgIW9PvfFSXSN+sDOG8VFyz+boI5la8AlHprUNJUXGA+mwoGt5CJZialCXKx /c/o3BB4A9XquXtSlPYbmxp7dzbfgzCrITjBgzKLG7MVOh2J7Ixdtx7g/Cq89DiPFcV2 LqXanblvOqeVUkJAINBDwQ3iTTXWlUgSdYxSFcI4Qpu467p/4DSmyC37PMmtNyVtYYHB mU7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=pnWwC3OEtJp4qDh3ydbFeFB9cPwe6pLry5NZ3z32/bg=; b=R0bWaccb2OHdsd8jM7ABKpEDLxAWv3HoU1KBC44jKZVhWCgb1rg4LqIJWX5dgDo78x uusIJctTSArj4ti27R0qZhbYoex9hbGeX0WdE8vlCSQCfgUFFpZ7idISfd+3mzMknfEi ChGOqLnsFNd//ndyFmYuapXzBo8WrYofK9uwO8XWKD75vZWt0tJSfefnjqKkSHMV7I1z tDLBpRkmAZ748YJsjHHgXLKDpEh9F10HNbsWBoirhLRibBtvy2m8e2Yq4JE8dkfOka13 Tz7m2GPuS1CG/10T9IUmS/mtZZzjL70TG7lVZak9dlzAm5g6BThK4h4pLl1raIgV76ZY 7Nfg== X-Gm-Message-State: APjAAAV65c+7d3+94PhMdSIQidWH6+bTFkQbH14b8yvbzPIAzKSCZmd5 hKnl1oFWysdY3/qzK6TpibDn7zhMZVwNKAZYMC0= X-Google-Smtp-Source: APXvYqw6hA45vMxpzCH33P5VAmEADd0/XOfVM5eljSrMKVQNlXGHtWgk+dbYqX6UPDSoRDT4JzZ2SmcXWm8rDzBW9tg= X-Received: by 2002:a05:6638:3a6:: with SMTP id z6mr29035183jap.33.1571192138560; Tue, 15 Oct 2019 19:15:38 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: vm finance Date: Tue, 15 Oct 2019 19:15:27 -0700 Message-ID: Subject: Re: logs/traces To: Kevin Oberman Cc: freebsd-net X-Rspamd-Queue-Id: 46tG9R5xXtz46qk X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=dcuGeSG6; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of vmfinance2@gmail.com designates 2607:f8b0:4864:20::d29 as permitted sender) smtp.mailfrom=vmfinance2@gmail.com X-Spamd-Result: default: False [-2.00 / 15.00]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; URI_COUNT_ODD(1.00)[3]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; IP_SCORE(0.00)[ip: (-5.38), ipnet: 2607:f8b0::/32(-2.48), asn: 15169(-2.10), country: US(-0.05)]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[9.2.d.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Oct 2019 02:15:41 -0000 Hi Kevin, I am looking to enable traces/log messages (like syslog or /var/log/messages) inside the codebase... any pointers for tcp/ip. tcpdump shows what is going on wire - but I would like to trace code internals...printk.. Thanks a lot! On Tue, Oct 15, 2019 at 6:11 PM Kevin Oberman wrote: > Use tcpdump(1) and/or net/wireshark(5). See man tcpdump and pcap-filter > for usage details. wireshark can analyze files collected by tcpdump and > dissect the packets. It can also do packet capture, itself. > -- > Kevin Oberman, Part time kid herder and retired Network Engineer > E-mail: rkoberman@gmail.com > PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 > > > On Tue, Oct 15, 2019 at 3:17 AM vm finance wrote: > >> Hi, >> >> Could someone please guide me on how to turn on tracing/log? >> >> I would like to follow/track how packets go in/out of TCP code block... >> Please let me know what knobs are available to achieve this. >> >> Thanks for any pointers. >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >> >