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// SPDX-License-Identifier: GPL-2.0+
/* Microchip VCAP API
*
* Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries.
*/
#include "sparx5_tc.h"
#include "vcap_api.h"
#include "vcap_api_client.h"
#include "sparx5_main_regs.h"
#include "sparx5_main.h"
#include "sparx5_vcap_impl.h"
static int sparx5_tc_matchall_replace(struct net_device *ndev,
struct tc_cls_matchall_offload *tmo,
bool ingress)
{
struct sparx5_port *port = netdev_priv(ndev);
struct flow_action_entry *action;
struct sparx5 *sparx5;
int err;
if (!flow_offload_has_one_action(&tmo->rule->action)) {
NL_SET_ERR_MSG_MOD(tmo->common.extack,
"Only one action per filter is supported");
return -EOPNOTSUPP;
}
action = &tmo->rule->action.entries[0];
sparx5 = port->sparx5;
switch (action->id) {
case FLOW_ACTION_GOTO:
err = vcap_enable_lookups(sparx5->vcap_ctrl, ndev,
tmo->common.chain_index,
action->chain_index, tmo->cookie,
true);
if (err == -EFAULT) {
NL_SET_ERR_MSG_MOD(tmo->common.extack,
"Unsupported goto chain");
return -EOPNOTSUPP;
}
if (err == -EADDRINUSE) {
NL_SET_ERR_MSG_MOD(tmo->common.extack,
"VCAP already enabled");
return -EOPNOTSUPP;
}
if (err == -EADDRNOTAVAIL) {
NL_SET_ERR_MSG_MOD(tmo->common.extack,
"Already matching this chain");
return -EOPNOTSUPP;
}
if (err) {
NL_SET_ERR_MSG_MOD(tmo->common.extack,
"Could not enable VCAP lookups");
return err;
}
break;
default:
NL_SET_ERR_MSG_MOD(tmo->common.extack, "Unsupported action");
return -EOPNOTSUPP;
}
return 0;
}
static int sparx5_tc_matchall_destroy(struct net_device *ndev,
struct tc_cls_matchall_offload *tmo,
bool ingress)
{
struct sparx5_port *port = netdev_priv(ndev);
struct sparx5 *sparx5;
int err;
sparx5 = port->sparx5;
if (!tmo->rule && tmo->cookie) {
err = vcap_enable_lookups(sparx5->vcap_ctrl, ndev,
0, 0, tmo->cookie, false);
if (err)
return err;
return 0;
}
NL_SET_ERR_MSG_MOD(tmo->common.extack, "Unsupported action");
return -EOPNOTSUPP;
}
int sparx5_tc_matchall(struct net_device *ndev,
struct tc_cls_matchall_offload *tmo,
bool ingress)
{
switch (tmo->command) {
case TC_CLSMATCHALL_REPLACE:
return sparx5_tc_matchall_replace(ndev, tmo, ingress);
case TC_CLSMATCHALL_DESTROY:
return sparx5_tc_matchall_destroy(ndev, tmo, ingress);
default:
return -EOPNOTSUPP;
}
}
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