mlxsw: Change the RX LAG hash function from XOR to CRC

Elad Raz · davem330 · commit 18c2d2c113eb · 2016-09-20T04:32:50.000-04:00
Change the RX hash function from XOR to CRC in order to have better
distribution of the traffic.

Signed-off-by: Elad Raz &lt;eladr@mellanox.com&gt;
Signed-off-by: Jiri Pirko &lt;jiri@mellanox.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -1392,7 +1392,7 @@ static inline void mlxsw_reg_slcr_pack(char *payload, u16 lag_hash)
 {
 	MLXSW_REG_ZERO(slcr, payload);
 	mlxsw_reg_slcr_pp_set(payload, MLXSW_REG_SLCR_PP_GLOBAL);
-	mlxsw_reg_slcr_type_set(payload, MLXSW_REG_SLCR_TYPE_XOR);
+	mlxsw_reg_slcr_type_set(payload, MLXSW_REG_SLCR_TYPE_CRC);
 	mlxsw_reg_slcr_lag_hash_set(payload, lag_hash);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1392,7 +1392,7 @@ static inline void mlxsw_reg_slcr_pack(char *payload, u16 lag_hash)`
`1392`	`1392`	`{`
`1393`	`1393`	`MLXSW_REG_ZERO(slcr, payload);`
`1394`	`1394`	`mlxsw_reg_slcr_pp_set(payload, MLXSW_REG_SLCR_PP_GLOBAL);`
`1395`		`- mlxsw_reg_slcr_type_set(payload, MLXSW_REG_SLCR_TYPE_XOR);`
	`1395`	`+ mlxsw_reg_slcr_type_set(payload, MLXSW_REG_SLCR_TYPE_CRC);`
`1396`	`1396`	`mlxsw_reg_slcr_lag_hash_set(payload, lag_hash);`
`1397`	`1397`	`}`
`1398`	`1398`