From: Jakub Kicinski <kuba@kernel.org>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, alexandre.belloni@bootlin.com,
andrew@lunn.ch, f.fainelli@gmail.com, vivien.didelot@gmail.com,
alexandru.marginean@nxp.com, claudiu.manoil@nxp.com,
xiaoliang.yang_1@nxp.com, hongbo.wang@nxp.com, jiri@resnulli.us,
idosch@idosch.org, UNGLinuxDriver@microchip.com
Subject: Re: [PATCH v4 net-next 00/10] Configuring congestion watermarks on ocelot switch using devlink-sb
Date: Wed, 13 Jan 2021 19:25:52 -0800 [thread overview]
Message-ID: <20210113192552.7d06261d@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <20210111174316.3515736-1-olteanv@gmail.com>
On Mon, 11 Jan 2021 19:43:06 +0200 Vladimir Oltean wrote:
> In some applications, it is important to create resource reservations in
> the Ethernet switches, to prevent background traffic, or deliberate
> attacks, from inducing denial of service into the high-priority traffic.
>
> These patches give the user some knobs to turn. The ocelot switches
> support per-port and per-port-tc reservations, on ingress and on egress.
> The resources that are monitored are packet buffers (in cells of 60
> bytes each) and frame references.
>
> The frames that exceed the reservations can optionally consume from
> sharing watermarks which are not per-port but global across the switch.
> There are 10 sharing watermarks, 8 of them are per traffic class and 2
> are per drop priority.
>
> I am configuring the hardware using the best of my knowledge, and mostly
> through trial and error. Same goes for devlink-sb integration. Feedback
> is welcome.
This no longer applies.
next prev parent reply other threads:[~2021-01-14 3:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-11 17:43 [PATCH v4 net-next 00/10] Configuring congestion watermarks on ocelot switch using devlink-sb Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 01/10] net: mscc: ocelot: auto-detect packet buffer size and number of frame references Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 02/10] net: mscc: ocelot: add ops for decoding watermark threshold and occupancy Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 03/10] net: dsa: add ops for devlink-sb Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 04/10] net: dsa: felix: reindent struct dsa_switch_ops Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 05/10] net: dsa: felix: perform teardown in reverse order of setup Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 06/10] net: mscc: ocelot: export NUM_TC constant from felix to common switch lib Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 07/10] net: mscc: ocelot: delete unused ocelot_set_cpu_port prototype Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 08/10] net: mscc: ocelot: register devlink ports Vladimir Oltean
2021-01-14 3:30 ` Jakub Kicinski
2021-01-14 10:27 ` Vladimir Oltean
2021-01-14 17:19 ` Jakub Kicinski
2021-01-14 17:25 ` Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 09/10] net: mscc: ocelot: initialize watermarks to sane defaults Vladimir Oltean
2021-01-11 17:43 ` [PATCH v4 net-next 10/10] net: mscc: ocelot: configure watermarks using devlink-sb Vladimir Oltean
2021-01-14 3:25 ` Jakub Kicinski [this message]
2021-01-14 8:48 ` [PATCH v4 net-next 00/10] Configuring congestion watermarks on ocelot switch " Vladimir Oltean
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