From owner-freebsd-net@freebsd.org Fri Jan 15 14:47:01 2021 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 8853C4E7EDC for ; Fri, 15 Jan 2021 14:47:01 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [IPv6:2a01:4f8:c2c:26d8::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DHPCS31gYz5381 for ; Fri, 15 Jan 2021 14:47:00 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [IPv6:2a03:3100:c:13:0:0:0:5]) by hz.grosbein.net (8.15.2/8.15.2) with ESMTPS id 10FEkjIp076293 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 15 Jan 2021 14:46:48 GMT (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: vit@otcnet.ru Received: from [10.58.0.10] (dadv@dadvw [10.58.0.10]) by eg.sd.rdtc.ru (8.16.1/8.16.1) with ESMTPS id 10FEkci2049939 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 15 Jan 2021 21:46:38 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: 'dropped due to full socket buffers' by SNMP To: Victor Gamov , freebsd-net@freebsd.org References: <388da9a7-7b89-89b2-54eb-17d0e818c924@otcnet.ru> <4e41c1d2-19bc-0345-0b03-526e4cb785c7@otcnet.ru> <6c780827-e764-8053-356b-a921e0892c15@grosbein.net> <7e51a6be-aea1-51c6-c0bd-10d00c19d5d3@grosbein.net> <888c8e91-c8f2-ad4b-9fcf-64c09432f2d5@otcnet.ru> From: Eugene Grosbein Message-ID: Date: Fri, 15 Jan 2021 21:46:37 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <888c8e91-c8f2-ad4b-9fcf-64c09432f2d5@otcnet.ru> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=0.1 required=5.0 tests=BAYES_00,LOCAL_FROM, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.2 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record * -0.0 SPF_PASS SPF: sender matches SPF record * 2.6 LOCAL_FROM From my domains * -0.2 NICE_REPLY_A Looks like a legit reply (A) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on hz.grosbein.net X-Rspamd-Queue-Id: 4DHPCS31gYz5381 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=permerror (mx1.freebsd.org: domain of eugen@grosbein.net uses mechanism not recognized by this client) smtp.mailfrom=eugen@grosbein.net X-Spamd-Result: default: False [-3.06 / 15.00]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; FREEFALL_USER(0.00)[eugen]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[grosbein.net]; RBL_DBL_DONT_QUERY_IPS(0.00)[2a01:4f8:c2c:26d8::2:from]; SPAMHAUS_ZRD(0.00)[2a01:4f8:c2c:26d8::2:from:127.0.2.255]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; R_SPF_PERMFAIL(0.00)[empty SPF record]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.96)[-0.964]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/29, country:DE]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-net] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Jan 2021 14:47:01 -0000 05.01.2021 16:39, Victor Gamov wrote: >>> As I understand hw.ix.flow_control=3 to allow flow-control for negotiation. >>> Real PAUSE setting will be set during negotiation. >> >> At the moment of congestion. > > As I understand PAUSE feature negotiated during auto-negotiation process. If flow-control disabled on one side (switch for example) then other side (host) will not to use this feature too. Is it right? Modulo firmware bugs. >>> So where I can find active flow-control setting for host interface? >> Can't check for ix just now, but for em(4) there is sysctl dev.em.0.fc. >> It should be similar for ix. > I have hw.ix.flow_control=3 (what does is it means ?) and dev.ix.0.fc=3 (and what does is it means?) /* Flow Control Settings */ enum ixgbe_fc_mode { ixgbe_fc_none = 0, ixgbe_fc_rx_pause, ixgbe_fc_tx_pause, ixgbe_fc_full, ixgbe_fc_default }; So, ixgbe_fc_full = 3 (full rx/tx flow control enabled, see sys/dev/ixgbe/ixgbe_type.h). > Back to my original question: is it possible to monitor `netstat -n -p udp -f inet -s` counters by SNMP? There is no standard MIB for these counters but you may always export it with net-mgmt/bsnmp-ucd port and custom OIDs if you use stock bsnmpd (bsnmp-ucd man page has an example). There is similar possibility for net-snmpd.