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Commit 6b17e864 authored by Vivien Didelot's avatar Vivien Didelot Committed by David S. Miller
Browse files

net: dsa: mv88e6xxx: flush VTU and STU entries 



Implement the VTU Flush operation (which also flushes the STU), so that
warm boots won't preserved old entries.

Signed-off-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 11149536

drivers/net/dsa/mv88e6xxx.c

+34 −0
Original line number Diff line number Diff line
@@ -1182,6 +1182,34 @@ int mv88e6xxx_port_stp_update(struct dsa_switch *ds, int port, u8 state) 
	return 0;

}



static int _mv88e6xxx_vtu_wait(struct dsa_switch *ds)

{

	return _mv88e6xxx_wait(ds, REG_GLOBAL, GLOBAL_VTU_OP,

			       GLOBAL_VTU_OP_BUSY);

}



static int _mv88e6xxx_vtu_cmd(struct dsa_switch *ds, u16 op)

{

	int ret;



	ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_VTU_OP, op);

	if (ret < 0)

		return ret;



	return _mv88e6xxx_vtu_wait(ds);

}



static int _mv88e6xxx_vtu_stu_flush(struct dsa_switch *ds)

{

	int ret;



	ret = _mv88e6xxx_vtu_wait(ds);

	if (ret < 0)

		return ret;



	return _mv88e6xxx_vtu_cmd(ds, GLOBAL_VTU_OP_FLUSH_ALL);

}



static int _mv88e6xxx_atu_mac_write(struct dsa_switch *ds,

				    const unsigned char *addr)

{
@@ -2071,6 +2099,12 @@ int mv88e6xxx_setup_global(struct dsa_switch *ds) 
	/* Wait for the flush to complete. */

	mutex_lock(&ps->smi_mutex);

	ret = _mv88e6xxx_stats_wait(ds);

	if (ret < 0)

		goto unlock;



	/* Clear all the VTU and STU entries */

	ret = _mv88e6xxx_vtu_stu_flush(ds);

unlock:

	mutex_unlock(&ps->smi_mutex);



	return ret;

drivers/net/dsa/mv88e6xxx.h

+2 −0
Original line number Diff line number Diff line
@@ -188,6 +188,8 @@ 
#define GLOBAL_CONTROL_TCAM_EN		BIT(1)

#define GLOBAL_CONTROL_EEPROM_DONE_EN	BIT(0)

#define GLOBAL_VTU_OP		0x05

#define GLOBAL_VTU_OP_BUSY	BIT(15)

#define GLOBAL_VTU_OP_FLUSH_ALL		((0x01 << 12) | GLOBAL_VTU_OP_BUSY)

#define GLOBAL_VTU_VID		0x06

#define GLOBAL_VTU_DATA_0_3	0x07

#define GLOBAL_VTU_DATA_4_7	0x08