netdev - [PATCH 0/7] net: dsa: mv88e6xxx: features to handle network storms

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Message-Id: <20190910154238.9155-1-bob.beckett@collabora.com>
Date:   Tue, 10 Sep 2019 16:41:46 +0100
From:   Robert Beckett <bob.beckett@...labora.com>
To:     netdev@...r.kernel.org
Cc:     Robert Beckett <bob.beckett@...labora.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 0/7] net: dsa: mv88e6xxx: features to handle network storms

This patch-set adds support for some features of the Marvell switch
chips that can be used to handle packet storms.

The rationale for this was a setup that requires the ability to receive
traffic from one port, while a packet storm is occuring on another port
(via an external switch with a deliberate loop). This is needed to
ensure vital data delivery from a specific port, while mitigating any
loops or DoS that a user may introduce on another port (can't guarantee
sensible users).

[patch 1/7] configures auto negotiation for CPU ports connected with
phys to enable pause frame propogation.

[patch 2/7] allows setting of port's default output queue priority for
any ingressing packets on that port.

[patch 3/7] dt-bindings for patch 2.

[patch 4/7] allows setting of a port's queue scheduling so that it can
prioritise egress of traffic routed from high priority ports.

[patch 5/7] dt-bindings for patch 4.

[patch 6/7] allows ports to rate limit their egress. This can be used to
stop the host CPU from becoming swamped by packet delivery and exhasting
descriptors.

[patch 7/7] dt-bindings for patch 6.

Robert Beckett (7):
  net/dsa: configure autoneg for CPU port
  net: dsa: mv88e6xxx: add ability to set default queue priorities per
    port
  dt-bindings: mv88e6xxx: add ability to set default queue priorities
    per port
  net: dsa: mv88e6xxx: add ability to set queue scheduling
  dt-bindings: mv88e6xxx: add ability to set queue scheduling
  net: dsa: mv88e6xxx: add egress rate limiting
  dt-bindings: mv88e6xxx: add egress rate limiting

 .../devicetree/bindings/net/dsa/marvell.txt   |  38 +++++
 drivers/net/dsa/mv88e6xxx/chip.c              | 122 ++++++++++++---
 drivers/net/dsa/mv88e6xxx/chip.h              |   5 +-
 drivers/net/dsa/mv88e6xxx/port.c              | 140 +++++++++++++++++-
 drivers/net/dsa/mv88e6xxx/port.h              |  24 ++-
 include/dt-bindings/net/dsa-mv88e6xxx.h       |  22 +++
 net/dsa/port.c                                |  10 ++
 7 files changed, 327 insertions(+), 34 deletions(-)
 create mode 100644 include/dt-bindings/net/dsa-mv88e6xxx.h

-- 
2.18.0