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* [PATCH v2 0/2] Fixes for KSZ DSA switch
@ 2021-07-21 21:56 Lino Sanfilippo
  2021-07-21 21:56 ` [PATCH v2 1/2] net: dsa: ensure linearized SKBs in case of tail taggers Lino Sanfilippo
                   ` (2 more replies)
  0 siblings, 3 replies; 13+ messages in thread
From: Lino Sanfilippo @ 2021-07-21 21:56 UTC (permalink / raw)
  To: woojung.huh, olteanv
  Cc: UNGLinuxDriver, andrew, vivien.didelot, f.fainelli, davem, kuba,
	netdev, linux-kernel, Lino Sanfilippo

These patches fix issues I encountered while using a KSZ9897 as a DSA
switch with a broadcom GENET network device as the DSA master device.

PATCH 1 fixes an invalid access to an SKB in case it is scattered.
PATCH 2 fixes incorrect hardware checksum calculation caused by the DSA
tag.

Changes in v2:
- instead of linearizing the SKBs only for KSZ switches ensure linearized
  SKBs for all tail taggers by clearing the feature flags NETIF_F_HW_SG and
  NETIF_F_FRAGLIST (suggested by Vladimir Oltean)

The patches have been tested with a KSZ9897 and apply against net-next.

Lino Sanfilippo (2):
  net: dsa: ensure linearized SKBs in case of tail taggers
  net: dsa: tag_ksz: dont let the hardware process the layer 4 checksum

 net/dsa/slave.c   | 14 +++++++++-----
 net/dsa/tag_ksz.c |  9 +++++++++
 2 files changed, 18 insertions(+), 5 deletions(-)


base-commit: 54cb43199e14c1181ddcd4a3782f1f7eb56bdab8
-- 
2.32.0


^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2021-07-23 13:41 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-21 21:56 [PATCH v2 0/2] Fixes for KSZ DSA switch Lino Sanfilippo
2021-07-21 21:56 ` [PATCH v2 1/2] net: dsa: ensure linearized SKBs in case of tail taggers Lino Sanfilippo
2021-07-21 23:35   ` Vladimir Oltean
2021-07-22  3:56     ` Florian Fainelli
2021-07-22 14:14       ` Andrew Lunn
2021-07-22 16:05         ` Florian Fainelli
2021-07-23  7:47         ` Lino Sanfilippo
2021-07-23 12:22           ` Vladimir Oltean
2021-07-23 13:41             ` Lino Sanfilippo
2021-07-21 21:56 ` [PATCH v2 2/2] net: dsa: tag_ksz: dont let the hardware process the layer 4 checksum Lino Sanfilippo
2021-07-21 23:37   ` Vladimir Oltean
2021-07-22  3:55   ` Florian Fainelli
2021-07-22  6:20 ` [PATCH v2 0/2] Fixes for KSZ DSA switch patchwork-bot+netdevbpf

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