sfc: don't read beyond unicast address list

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If we have more than 32 unicast MAC addresses assigned to an interface
we will read beyond the end of the address table in the driver when
adding filters. The next 256 entries store multicast addresses, so we
will end up attempting to insert duplicate filters, which is mostly
harmless. If we add more than 288 unicast addresses we will then read
past the multicast address table, which is likely to be more exciting.

Fixes: 12fb0da45c ("sfc: clean fallbacks between promisc/normal in efx_ef10_filter_sync_rx_mode")
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Bert Kenward 2017-07-12 17:19:41 +01:00 • committed by David S. Miller

parent 07b8a7cf9a

commit c70d68150f

1 changed files with 3 additions and 5 deletions

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drivers/net/ethernet/sfc/ef10.c

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