Date: Fri, 19 Apr 2019 20:15:34 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Kurt Lidl <lidl@FreeBSD.org> Cc: freebsd-hackers@freebsd.org Subject: Re: openvpn and system overhead Message-ID: <20190419171534.GF12936@kib.kiev.ua> In-Reply-To: <8e238882-1779-41ed-92fd-33abf2667d18@FreeBSD.org> References: <alpine.BSF.2.20.1904171707030.87502@puchar.net> <0cc6e0ac-a9a6-a462-3a1e-bfccfd41e138@grosbein.net> <ACE6415A-549E-4349-BB70-E4C1ECA08BCB@netgate.com> <alpine.BSF.2.20.1904191842140.44949@puchar.net> <8e238882-1779-41ed-92fd-33abf2667d18@FreeBSD.org>
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On Fri, Apr 19, 2019 at 01:01:06PM -0400, Kurt Lidl wrote: > Well, FreeBSD does have sendmmsg()/recvmmsg(), which allows for > sending/receiving multiple packets per system call. I do not know if > the "tun" device allows for send/recv type processing, or just > read/write. sendmmsg and recvmmsg are userspace wrappers, they are not real syscalls.
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