netdev - [PATCH v3 0/2] bnx2x: disable GSO on too-large packets

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Message-Id: <20180130011447.24916-1-dja@axtens.net>
Date:   Tue, 30 Jan 2018 12:14:45 +1100
From:   Daniel Axtens <dja@...ens.net>
To:     netdev@...r.kernel.org
Cc:     Daniel Axtens <dja@...ens.net>, Manish.Chopra@...ium.com,
        Jason Wang <jasowang@...hat.com>,
        Pravin Shelar <pshelar@....org>,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Subject: [PATCH v3 0/2] bnx2x: disable GSO on too-large packets

We observed a case where a packet received on an ibmveth device had a
GSO size of around 10kB. This was forwarded by Open vSwitch to a bnx2x
device, where it caused a firmware assert. This is described in detail
at [0].

Ultimately we want a fix in the core, but that is very tricky to
backport. So for now, just stop the bnx2x driver from crashing.

When net-next re-opens I will send the fix to the core and a revert
for this.

Marcelo: I have left renaming skb_gso_validate_mtu() for the
next series.

Thanks,
Daniel

[0]: https://patchwork.ozlabs.org/patch/859410/

Cc: Manish.Chopra@...ium.com
Cc: Jason Wang <jasowang@...hat.com>
Cc: Pravin Shelar <pshelar@....org>
Cc: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>

Daniel Axtens (2):
  net: create skb_gso_validate_mac_len()
  bnx2x: disable GSO where gso_size is too big for hardware

 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c |  9 ++++
 include/linux/skbuff.h                           | 16 ++++++
 net/core/skbuff.c                                | 65 +++++++++++++++++++-----
 net/sched/sch_tbf.c                              | 10 ----
 4 files changed, 76 insertions(+), 24 deletions(-)

-- 
2.14.1