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// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/* Microsemi Ocelot Switch driver
*
* This contains glue logic between the switchdev driver operations and the
* mscc_ocelot_switch_lib.
*
* Copyright (c) 2017, 2019 Microsemi Corporation
* Copyright 2020-2021 NXP Semiconductors
*/
#include <linux/if_bridge.h>
#include <linux/mrp_bridge.h>
#include <soc/mscc/ocelot_vcap.h>
#include <uapi/linux/mrp_bridge.h>
#include "ocelot.h"
#include "ocelot_vcap.h"
static int ocelot_mrp_del_vcap(struct ocelot *ocelot, int port)
{
struct ocelot_vcap_block *block_vcap_is2;
struct ocelot_vcap_filter *filter;
block_vcap_is2 = &ocelot->block[VCAP_IS2];
filter = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, port,
false);
if (!filter)
return 0;
return ocelot_vcap_filter_del(ocelot, filter);
}
int ocelot_mrp_add(struct ocelot *ocelot, int port,
const struct switchdev_obj_mrp *mrp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct ocelot_port_private *priv;
struct net_device *dev;
if (!ocelot_port)
return -EOPNOTSUPP;
priv = container_of(ocelot_port, struct ocelot_port_private, port);
dev = priv->dev;
if (mrp->p_port != dev && mrp->s_port != dev)
return 0;
if (ocelot->mrp_ring_id != 0 &&
ocelot->mrp_s_port &&
ocelot->mrp_p_port)
return -EINVAL;
if (mrp->p_port == dev)
ocelot->mrp_p_port = dev;
if (mrp->s_port == dev)
ocelot->mrp_s_port = dev;
ocelot->mrp_ring_id = mrp->ring_id;
return 0;
}
EXPORT_SYMBOL(ocelot_mrp_add);
int ocelot_mrp_del(struct ocelot *ocelot, int port,
const struct switchdev_obj_mrp *mrp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct ocelot_port_private *priv;
struct net_device *dev;
if (!ocelot_port)
return -EOPNOTSUPP;
priv = container_of(ocelot_port, struct ocelot_port_private, port);
dev = priv->dev;
if (ocelot->mrp_p_port != dev && ocelot->mrp_s_port != dev)
return 0;
if (ocelot->mrp_ring_id == 0 &&
!ocelot->mrp_s_port &&
!ocelot->mrp_p_port)
return -EINVAL;
if (ocelot_mrp_del_vcap(ocelot, priv->chip_port))
return -EINVAL;
if (ocelot->mrp_p_port == dev)
ocelot->mrp_p_port = NULL;
if (ocelot->mrp_s_port == dev)
ocelot->mrp_s_port = NULL;
ocelot->mrp_ring_id = 0;
return 0;
}
EXPORT_SYMBOL(ocelot_mrp_del);
int ocelot_mrp_add_ring_role(struct ocelot *ocelot, int port,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct ocelot_vcap_filter *filter;
struct ocelot_port_private *priv;
struct net_device *dev;
int err;
if (!ocelot_port)
return -EOPNOTSUPP;
priv = container_of(ocelot_port, struct ocelot_port_private, port);
dev = priv->dev;
if (ocelot->mrp_ring_id != mrp->ring_id)
return -EINVAL;
if (!mrp->sw_backup)
return -EOPNOTSUPP;
if (ocelot->mrp_p_port != dev && ocelot->mrp_s_port != dev)
return 0;
filter = kzalloc(sizeof(*filter), GFP_ATOMIC);
if (!filter)
return -ENOMEM;
filter->key_type = OCELOT_VCAP_KEY_ETYPE;
filter->prio = 1;
filter->id.cookie = priv->chip_port;
filter->id.tc_offload = false;
filter->block_id = VCAP_IS2;
filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
filter->ingress_port_mask = BIT(priv->chip_port);
*(__be16 *)filter->key.etype.etype.value = htons(ETH_P_MRP);
*(__be16 *)filter->key.etype.etype.mask = htons(0xffff);
filter->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY;
filter->action.port_mask = 0x0;
filter->action.cpu_copy_ena = true;
filter->action.cpu_qu_num = OCELOT_MRP_CPUQ;
err = ocelot_vcap_filter_add(ocelot, filter, NULL);
if (err)
kfree(filter);
return err;
}
EXPORT_SYMBOL(ocelot_mrp_add_ring_role);
int ocelot_mrp_del_ring_role(struct ocelot *ocelot, int port,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct ocelot_port_private *priv;
struct net_device *dev;
if (!ocelot_port)
return -EOPNOTSUPP;
priv = container_of(ocelot_port, struct ocelot_port_private, port);
dev = priv->dev;
if (ocelot->mrp_ring_id != mrp->ring_id)
return -EINVAL;
if (!mrp->sw_backup)
return -EOPNOTSUPP;
if (ocelot->mrp_p_port != dev && ocelot->mrp_s_port != dev)
return 0;
return ocelot_mrp_del_vcap(ocelot, priv->chip_port);
}
EXPORT_SYMBOL(ocelot_mrp_del_ring_role);
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