netdev - [PATCH net v2 0/6] mlxsw: Various fixes

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Date:   Wed, 15 Jan 2020 13:53:43 +0200
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, jiri@...lanox.com,
        mlxsw@...lanox.com, Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net v2 0/6] mlxsw: Various fixes

From: Ido Schimmel <idosch@...lanox.com>

This patch set contains various fixes for mlxsw.

Patch #1 splits the init() callback between Spectrum-2 and Spectrum-3 in
order to avoid enforcing the same firmware version for both ASICs, as
this can't possibly work. Without this patch the driver cannot boot with
the Spectrum-3 ASIC.

Patches #2-#3 fix a long standing race condition that was recently
exposed while testing the driver on an emulator, which is very slow
compared to the actual hardware. The problem is explained in detail in
the commit messages.

Patch #4 fixes a selftest.

Patch #5 prevents offloaded qdiscs from presenting a non-zero backlog to
the user when the netdev is down. This is done by clearing the cached
backlog in the driver when the netdev goes down.

Patch #6 fixes qdisc statistics (backlog and tail drops) to also take
into account the multicast traffic classes.

v2:
* Patches #2-#3: use skb_cow_head() instead of skb_unshare() as
  suggested by Jakub. Remove unnecessary check regarding headroom
* Patches #5-#6: new

Ido Schimmel (3):
  mlxsw: spectrum: Do not enforce same firmware version for multiple
    ASICs
  mlxsw: spectrum: Do not modify cloned SKBs during xmit
  mlxsw: switchx2: Do not modify cloned SKBs during xmit

Petr Machata (3):
  selftests: mlxsw: qos_mc_aware: Fix mausezahn invocation
  mlxsw: spectrum: Wipe xstats.backlog of down ports
  mlxsw: spectrum_qdisc: Include MC TCs in Qdisc counters

 .../net/ethernet/mellanox/mlxsw/spectrum.c    | 54 ++++++++++++++-----
 .../ethernet/mellanox/mlxsw/spectrum_qdisc.c  | 30 ++++++++---
 .../net/ethernet/mellanox/mlxsw/switchx2.c    | 17 +++---
 .../drivers/net/mlxsw/qos_mc_aware.sh         |  8 ++-
 4 files changed, 76 insertions(+), 33 deletions(-)

-- 
2.24.1