sfc: Add length checks to efx_xmit_with_hwtstamp() and efx_ptp_is_ptp_tx()

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efx_ptp_is_ptp_tx() must be robust against skbs from raw sockets that
have invalid IPv4 and UDP headers.

Add checks that:
- the transport header has been found
- there is enough space between network and transport header offset
  for an IPv4 header
- there is enough space after the transport header offset for a
  UDP header

Fixes: 7c236c43b8 ('sfc: Add support for IEEE-1588 PTP')
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

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This commit is contained in:

Ben Hutchings 2013-12-06 19:26:40 +00:00

parent e1ca87bb1b

commit e5a498e943

1 changed files with 4 additions and 0 deletions

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4

drivers/net/ethernet/sfc/ptp.c

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