Commit bb03b280 authored by Tobias Waldekranz's avatar Tobias Waldekranz Committed by David S. Miller
Browse files

net: dsa: mv88e6xxx: Support policy entries in the VTU 



A VTU entry with policy enabled is used in combination with a port's
VTU policy setting to override normal switching behavior for frames
assigned to the entry's VID.

A typical example is to Treat all frames in a particular VLAN as
control traffic, and trap them to the CPU. In which case the relevant
user port's VTU policy would be set to TRAP.

Signed-off-by: default avatarTobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7af4a361

drivers/net/dsa/mv88e6xxx/chip.h

+1 −0
Original line number Diff line number Diff line
@@ -179,6 +179,7 @@ struct mv88e6xxx_vtu_entry { 
	u16	fid;

	u8	sid;

	bool	valid;

	bool	policy;

	u8	member[DSA_MAX_PORTS];

	u8	state[DSA_MAX_PORTS];

};

drivers/net/dsa/mv88e6xxx/global1.h

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ 


/* Offset 0x02: VTU FID Register */

#define MV88E6352_G1_VTU_FID		0x02

#define MV88E6352_G1_VTU_FID_VID_POLICY	0x1000

#define MV88E6352_G1_VTU_FID_MASK	0x0fff



/* Offset 0x03: VTU SID Register */

drivers/net/dsa/mv88e6xxx/global1_vtu.c

+4 −1
Original line number Diff line number Diff line
@@ -27,7 +27,7 @@ static int mv88e6xxx_g1_vtu_fid_read(struct mv88e6xxx_chip *chip, 
		return err;



	entry->fid = val & MV88E6352_G1_VTU_FID_MASK;



	entry->policy = !!(val & MV88E6352_G1_VTU_FID_VID_POLICY);

	return 0;

}
@@ -36,6 +36,9 @@ static int mv88e6xxx_g1_vtu_fid_write(struct mv88e6xxx_chip *chip, 
{

	u16 val = entry->fid & MV88E6352_G1_VTU_FID_MASK;



	if (entry->policy)

		val |= MV88E6352_G1_VTU_FID_VID_POLICY;



	return mv88e6xxx_g1_write(chip, MV88E6352_G1_VTU_FID, val);

}