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net: dsa: mv88e6xxx: Fix off-by-one in VTU devlink region size 

In the unlikely event of the VTU being loaded to the brim with 4k
entries, the last one was placed in the buffer, but the size reported
to devlink was off-by-one. Make sure that the final entry is available
to the caller.

Fixes: ca4d632aef ("net: dsa: mv88e6xxx: Export VTU as devlink region")
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tobias Waldekranz 2021-04-21 14:04:53 +02:00 committed by David S. Miller
parent 78e70dbcfd
commit 281140a0a2
1 changed files with 1 additions and 1 deletions
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2
drivers/net/dsa/mv88e6xxx/devlink.c
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@ -678,7 +678,7 @@ static int mv88e6xxx_setup_devlink_regions_global(struct dsa_switch *ds,
sizeof(struct mv88e6xxx_devlink_atu_entry);
break;
case MV88E6XXX_REGION_VTU:
size = mv88e6xxx_max_vid(chip) *
size = (mv88e6xxx_max_vid(chip) + 1) *
sizeof(struct mv88e6xxx_devlink_vtu_entry);
break;
}