netdev - [PATCH 0/6] net: stmmac: fix handling of oversized frames

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Message-Id: <20190327203540.1884-1-aaro.koskinen@iki.fi>
Date:   Wed, 27 Mar 2019 22:35:34 +0200
From:   Aaro Koskinen <aaro.koskinen@....fi>
To:     "David S. Miller" <davem@...emloft.net>,
        Jose Abreu <joabreu@...opsys.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Aaro Koskinen <aaro.koskinen@...ia.com>
Subject: [PATCH 0/6] net: stmmac: fix handling of oversized frames

From: Aaro Koskinen <aaro.koskinen@...ia.com>

Hi,

I accidentally had MTU size mismatch (9000 vs. 1500) in my network,
and I noticed I could kill a system using stmmac & 1500 MTU simply
by pinging it with "ping -s 2000 ...".

While testing a fix I encountered also some other issues that need fixing.

I have tested these only with enhanced descriptors, so the normal
descriptor changes need a careful review.

A.

Aaro Koskinen (6):
  net: stmmac: use correct DMA buffer size in the RX descriptor
  net: stmmac: ratelimit RX error logs
  net: stmmac: don't stop NAPI processing when dropping a packet
  net: stmmac: don't overwrite discard_frame status
  net: stmmac: fix dropping of multi-descriptor RX frames
  net: stmmac: don't log oversized frames

 .../net/ethernet/stmicro/stmmac/descs_com.h   | 22 +++++++-----
 .../ethernet/stmicro/stmmac/dwmac4_descs.c    |  2 +-
 .../ethernet/stmicro/stmmac/dwxgmac2_descs.c  |  2 +-
 .../net/ethernet/stmicro/stmmac/enh_desc.c    | 22 ++++++++----
 drivers/net/ethernet/stmicro/stmmac/hwif.h    |  2 +-
 .../net/ethernet/stmicro/stmmac/norm_desc.c   | 12 ++++---
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 34 +++++++++++--------
 7 files changed, 59 insertions(+), 37 deletions(-)

-- 
2.17.0