Date: Wed, 19 Nov 2014 20:35:48 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Adrian Chadd <adrian@freebsd.org> Cc: Lawrence Stewart <lstewart@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>, Luigi Rizzo <rizzo@iet.unipi.it>, Navdeep Parhar <np@freebsd.org> Subject: Re: [RFC] Removal of M_FLOWID flag from m_flags [WAS: Add support for hardware transmit rate limiting queues] Message-ID: <546CF114.2050309@selasky.org> In-Reply-To: <CAJ-Vmom3_gt-=sXsByO4Frw6FjLXZAitGH5=MOuaVvoZsQEnFg@mail.gmail.com> References: <546CE948.2070105@selasky.org> <CAJ-VmokR-diHyDjETwQ8k5koY3cPQ=PHtfeqpkC7rHyrZb1FTQ@mail.gmail.com> <546CEEAB.7000207@selasky.org> <CAJ-Vmom3_gt-=sXsByO4Frw6FjLXZAitGH5=MOuaVvoZsQEnFg@mail.gmail.com>
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On 11/19/14 20:32, Adrian Chadd wrote: > The RSS hash is also used for: > > * TCP timers, > * UDP transmit, and > * the transmit path in RSS aware drivers (igb / ixgbe) > I know, and the RSS flowid values are still preserved as before in the receive path. It is just about how you tell the upper/lower layers that there is something in the "m_pkthdr.flowid" which they can use to accelerate traffic. --HPS
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