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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2019-2022 Marvell International Ltd. All rights reserved */
#include <linux/kernel.h>
#include <linux/list.h>
#include "prestera.h"
#include "prestera_hw.h"
#include "prestera_flow.h"
#include "prestera_flower.h"
#include "prestera_matchall.h"
#include "prestera_span.h"
int prestera_mall_replace(struct prestera_flow_block *block,
struct tc_cls_matchall_offload *f)
{
struct prestera_flow_block_binding *binding;
__be16 protocol = f->common.protocol;
struct flow_action_entry *act;
struct prestera_port *port;
int err;
if (!flow_offload_has_one_action(&f->rule->action)) {
NL_SET_ERR_MSG(f->common.extack,
"Only singular actions are supported");
return -EOPNOTSUPP;
}
act = &f->rule->action.entries[0];
if (!prestera_netdev_check(act->dev)) {
NL_SET_ERR_MSG(f->common.extack,
"Only Marvell Prestera port is supported");
return -EINVAL;
}
if (!tc_cls_can_offload_and_chain0(act->dev, &f->common))
return -EOPNOTSUPP;
if (act->id != FLOW_ACTION_MIRRED)
return -EOPNOTSUPP;
if (protocol != htons(ETH_P_ALL))
return -EOPNOTSUPP;
port = netdev_priv(act->dev);
list_for_each_entry(binding, &block->binding_list, list) {
err = prestera_span_rule_add(binding, port, block->ingress);
if (err)
goto rollback;
}
return 0;
rollback:
list_for_each_entry_continue_reverse(binding,
&block->binding_list, list)
prestera_span_rule_del(binding, block->ingress);
return err;
}
void prestera_mall_destroy(struct prestera_flow_block *block)
{
struct prestera_flow_block_binding *binding;
list_for_each_entry(binding, &block->binding_list, list)
prestera_span_rule_del(binding, block->ingress);
}
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