提交 702286d3 编写于 作者: N Nir Dotan 提交者: Greg Kroah-Hartman

mlxsw: spectrum_acl: Limit priority value

[ Upstream commit d7263ab35be25505ab57ebecd93cbc5dba8be717 ]

In Spectrum-2, higher priority value wins and priority valid values are in
the range of {1,cap_kvd_size-1}. mlxsw_sp_acl_tcam_priority_get converts
from lower-bound priorities alike tc flower to Spectrum-2 HW range. Up
until now tc flower did not provide priority 0 or reached the maximal
value, however multicast routing does provide priority 0.

Therefore, Change mlxsw_sp_acl_tcam_priority_get to verify priority is in
the correct range. Make sure priority is never set to zero and never
exceeds the maximal allowed value.
Signed-off-by: NNir Dotan <nird@mellanox.com>
Reviewed-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>
上级 e640039a
......@@ -95,8 +95,9 @@ int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, KVD_SIZE))
return -EIO;
max_priority = MLXSW_CORE_RES_GET(mlxsw_sp->core, KVD_SIZE);
if (rulei->priority > max_priority)
/* Priority range is 1..cap_kvd_size-1. */
max_priority = MLXSW_CORE_RES_GET(mlxsw_sp->core, KVD_SIZE) - 1;
if (rulei->priority >= max_priority)
return -EINVAL;
/* Unlike in TC, in HW, higher number means higher priority. */
......
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