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OpenCloudOS-Kernel
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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: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tobias Waldekranz 2022-02-03 11:16:54 +01:00 committed by David S. Miller
parent 7af4a361a6
commit bb03b280e0
3 changed files with 6 additions and 1 deletions
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1
drivers/net/dsa/mv88e6xxx/chip.h
View File

@ -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];
};

1
drivers/net/dsa/mv88e6xxx/global1.h
View File

@ -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 */

5
drivers/net/dsa/mv88e6xxx/global1_vtu.c
View File

@ -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);
}