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