From: Ido Schimmel <idosch@idosch.org>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, kuba@kernel.org, jiri@nvidia.com,
danieller@nvidia.com, andrew@lunn.ch, f.fainelli@gmail.com,
mkubecek@suse.cz, mlxsw@nvidia.com,
Ido Schimmel <idosch@nvidia.com>
Subject: [PATCH net-next 0/6] Support setting lanes via ethtool
Date: Sat, 10 Oct 2020 18:41:13 +0300 [thread overview]
Message-ID: <20201010154119.3537085-1-idosch@idosch.org> (raw)
From: Ido Schimmel <idosch@nvidia.com>
Danielle says:
Some speeds can be achieved with different number of lanes. For example,
100Gbps can be achieved using two lanes of 50Gbps or four lanes of
25Gbps. This patch set adds a new selector that allows ethtool to
advertise link modes according to their number of lanes and also force a
specific number of lanes when autonegotiation is off.
Advertising all link modes with a speed of 100Gbps that use two lanes:
# ethtool -s swp1 speed 100000 lanes 2 autoneg on
Forcing a speed of 100Gbps using four lanes:
# ethtool -s swp1 speed 100000 lanes 4 autoneg off
Patch set overview:
Patch #1 allows user space to configure the desired number of lanes.
Patch #2 adjusts ethtool to dump to user space the number of lanes
currently in use.
Patches #3-#5 add support for lanes configuration in mlxsw.
Patch #6 adds a selftest.
Danielle Ratson (6):
ethtool: Extend link modes settings uAPI with lanes
ethtool: Expose the number of lanes in use
mlxsw: ethtool: Remove max lanes filtering
mlxsw: ethtool: Add support for setting lanes when autoneg is off
mlxsw: ethtool: Expose the number of lanes in use
net: selftests: Add lanes setting test
Documentation/networking/ethtool-netlink.rst | 16 +-
.../net/ethernet/mellanox/mlxsw/spectrum.h | 13 +-
.../mellanox/mlxsw/spectrum_ethtool.c | 156 ++++++++----
include/linux/ethtool.h | 4 +
include/uapi/linux/ethtool.h | 8 +
include/uapi/linux/ethtool_netlink.h | 1 +
net/ethtool/linkmodes.c | 232 +++++++++++-------
net/ethtool/netlink.h | 2 +-
.../selftests/net/forwarding/ethtool_lanes.sh | 224 +++++++++++++++++
.../selftests/net/forwarding/ethtool_lib.sh | 34 +++
tools/testing/selftests/net/forwarding/lib.sh | 28 +++
11 files changed, 571 insertions(+), 147 deletions(-)
create mode 100755 tools/testing/selftests/net/forwarding/ethtool_lanes.sh
--
2.26.2
next reply other threads:[~2020-10-10 23:14 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-10 15:41 Ido Schimmel [this message]
2020-10-10 15:41 ` [PATCH net-next 1/6] ethtool: Extend link modes settings uAPI with lanes Ido Schimmel
2020-10-11 22:37 ` Jakub Kicinski
2020-10-12 15:33 ` Danielle Ratson
2020-10-12 15:58 ` Jakub Kicinski
2020-10-13 14:29 ` Danielle Ratson
2020-10-13 15:43 ` Jakub Kicinski
2020-10-16 22:15 ` Andrew Lunn
2020-10-19 7:19 ` Danielle Ratson
2020-10-19 11:04 ` Michal Kubecek
2020-10-19 12:26 ` Jiri Pirko
2020-10-19 13:24 ` Michal Kubecek
2020-10-20 7:39 ` Danielle Ratson
2020-10-21 7:08 ` Michal Kubecek
2020-10-21 7:20 ` Danielle Ratson
2020-10-21 8:47 ` Michal Kubecek
2020-10-22 6:15 ` Danielle Ratson
2020-10-22 16:27 ` Michal Kubecek
2020-11-23 9:47 ` Danielle Ratson
2020-11-24 22:12 ` Michal Kubecek
2020-11-25 10:35 ` Danielle Ratson
2020-11-26 21:07 ` Michal Kubecek
2020-12-01 17:22 ` Danielle Ratson
2020-12-02 0:52 ` Edwin Peer
2020-12-02 1:17 ` Edwin Peer
2020-10-19 12:24 ` Jiri Pirko
2020-10-19 12:38 ` Andrew Lunn
2020-10-12 16:40 ` Michal Kubecek
2020-10-12 19:10 ` Johannes Berg
2020-10-12 20:08 ` Jakub Kicinski
2020-10-12 17:03 ` Michal Kubecek
2020-11-19 20:38 ` Edwin Peer
2020-11-23 9:40 ` Jiri Pirko
2020-11-30 17:01 ` Edwin Peer
2020-11-30 17:14 ` Jiri Pirko
2020-11-30 18:00 ` Edwin Peer
2020-12-01 11:22 ` Jiri Pirko
2020-12-02 0:32 ` Edwin Peer
2020-12-02 10:09 ` Jiri Pirko
2020-12-02 17:53 ` Edwin Peer
2020-10-10 15:41 ` [PATCH net-next 2/6] ethtool: Expose the number of lanes in use Ido Schimmel
2020-10-10 15:41 ` [PATCH net-next 3/6] mlxsw: ethtool: Remove max lanes filtering Ido Schimmel
2020-10-10 15:41 ` [PATCH net-next 4/6] mlxsw: ethtool: Add support for setting lanes when autoneg is off Ido Schimmel
2020-10-10 15:41 ` [PATCH net-next 5/6] mlxsw: ethtool: Expose the number of lanes in use Ido Schimmel
2020-10-10 15:41 ` [PATCH net-next 6/6] net: selftests: Add lanes setting test Ido Schimmel
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