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[174.91.9.204]) by smtp.gmail.com with ESMTPSA id i35sm4086119qtd.96.2020.07.09.10.02.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Jul 2020 10:02:26 -0700 (PDT) Sender: Mark Johnston Date: Thu, 9 Jul 2020 13:02:23 -0400 From: Mark Johnston To: Eugene Grosbein Cc: Michael Tuexen , freebsd-net@freebsd.org Subject: Re: making SCTP loadable and removing it from GENERIC Message-ID: <20200709170223.GD8947@raichu> References: <20200709151300.GC8947@raichu> <1a425cce-4905-1d2f-d5ee-cbeb1c300afc@grosbein.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1a425cce-4905-1d2f-d5ee-cbeb1c300afc@grosbein.net> X-Rspamd-Queue-Id: 4B2jCR6nLjz4Hx2 X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=kDM+eamr; dmarc=none; spf=pass (mx1.freebsd.org: domain of markjdb@gmail.com designates 2607:f8b0:4864:20::829 as permitted sender) smtp.mailfrom=markjdb@gmail.com X-Spamd-Result: default: False [-1.85 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; NEURAL_HAM_MEDIUM(-0.97)[-0.969]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; NEURAL_HAM_LONG(-1.03)[-1.030]; MIME_GOOD(-0.10)[text/plain]; MID_RHS_NOT_FQDN(0.50)[]; DMARC_NA(0.00)[freebsd.org]; TO_DN_SOME(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; NEURAL_HAM_SHORT(-0.15)[-0.155]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::829:from]; FORGED_SENDER(0.30)[markj@freebsd.org,markjdb@gmail.com]; RECEIVED_SPAMHAUS_PBL(0.00)[174.91.9.204:received]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; FROM_NEQ_ENVFROM(0.00)[markj@freebsd.org,markjdb@gmail.com]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Jul 2020 17:02:28 -0000 On Thu, Jul 09, 2020 at 11:36:34PM +0700, Eugene Grosbein wrote: > 09.07.2020 22:41, Michael Tuexen wrote: > > >> I am wondering if anyone has any objections to or concerns about this > >> proposal. Any feedback is appreciated. > > I'm for it. > > > maybe it is acceptable to document user visible changes. This could include > > * parameter tunings in /etc/sysctl.conf are only applied if the SCTP module > > is loaded from /etc/loader.conf. > > You mean /boot/loader.conf. > > This may be relaxed with "sctp_enable" knob for /etc/rc.conf and new startup script > /etc/rc.d/sctp that: a) REQUIRE: kld; b) checks if sctp.ko already loaded and load it as needed; > c) applies sctp sysctl tuning from /etc/sysctl.conf for values that differ. Michael and I talked about this a bit in the past. I propose a more general solution, since it is a problem not just for SCTP: https://reviews.freebsd.org/D25601