123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/* Microchip Sparx5 Switch driver
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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 <net/pkt_cls.h>
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#include "sparx5_tc.h"
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#include "sparx5_main.h"
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#include "sparx5_qos.h"
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static void sparx5_tc_get_layer_and_idx(u32 parent, u32 portno, u32 *layer,
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u32 *idx)
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{
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if (parent == TC_H_ROOT) {
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*layer = 2;
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*idx = portno;
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} else {
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u32 queue = TC_H_MIN(parent) - 1;
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*layer = 0;
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*idx = SPX5_HSCH_L0_GET_IDX(portno, queue);
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}
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}
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static int sparx5_tc_setup_qdisc_mqprio(struct net_device *ndev,
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struct tc_mqprio_qopt_offload *m)
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{
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m->qopt.hw = TC_MQPRIO_HW_OFFLOAD_TCS;
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if (m->qopt.num_tc == 0)
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return sparx5_tc_mqprio_del(ndev);
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else
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return sparx5_tc_mqprio_add(ndev, m->qopt.num_tc);
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}
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static int sparx5_tc_setup_qdisc_tbf(struct net_device *ndev,
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struct tc_tbf_qopt_offload *qopt)
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{
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struct sparx5_port *port = netdev_priv(ndev);
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u32 layer, se_idx;
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sparx5_tc_get_layer_and_idx(qopt->parent, port->portno, &layer,
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&se_idx);
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switch (qopt->command) {
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case TC_TBF_REPLACE:
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return sparx5_tc_tbf_add(port, &qopt->replace_params, layer,
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se_idx);
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case TC_TBF_DESTROY:
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return sparx5_tc_tbf_del(port, layer, se_idx);
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case TC_TBF_STATS:
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return -EOPNOTSUPP;
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default:
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return -EOPNOTSUPP;
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}
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return -EOPNOTSUPP;
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}
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static int sparx5_tc_setup_qdisc_ets(struct net_device *ndev,
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struct tc_ets_qopt_offload *qopt)
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{
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struct tc_ets_qopt_offload_replace_params *params =
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&qopt->replace_params;
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struct sparx5_port *port = netdev_priv(ndev);
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int i;
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/* Only allow ets on ports */
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if (qopt->parent != TC_H_ROOT)
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return -EOPNOTSUPP;
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switch (qopt->command) {
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case TC_ETS_REPLACE:
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/* We support eight priorities */
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if (params->bands != SPX5_PRIOS)
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return -EOPNOTSUPP;
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/* Sanity checks */
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for (i = 0; i < SPX5_PRIOS; ++i) {
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/* Priority map is *always* reverse e.g: 7 6 5 .. 0 */
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if (params->priomap[i] != (7 - i))
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return -EOPNOTSUPP;
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/* Throw an error if we receive zero weights by tc */
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if (params->quanta[i] && params->weights[i] == 0) {
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pr_err("Invalid ets configuration; band %d has weight zero",
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i);
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return -EINVAL;
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}
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}
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return sparx5_tc_ets_add(port, params);
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case TC_ETS_DESTROY:
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return sparx5_tc_ets_del(port);
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case TC_ETS_GRAFT:
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return -EOPNOTSUPP;
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default:
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return -EOPNOTSUPP;
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}
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return -EOPNOTSUPP;
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}
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int sparx5_port_setup_tc(struct net_device *ndev, enum tc_setup_type type,
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void *type_data)
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{
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switch (type) {
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case TC_SETUP_QDISC_MQPRIO:
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return sparx5_tc_setup_qdisc_mqprio(ndev, type_data);
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case TC_SETUP_QDISC_TBF:
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return sparx5_tc_setup_qdisc_tbf(ndev, type_data);
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case TC_SETUP_QDISC_ETS:
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return sparx5_tc_setup_qdisc_ets(ndev, type_data);
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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