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753 lines
19 KiB
753 lines
19 KiB
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
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/* Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved */ |
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#include <linux/netdevice.h> |
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#include <linux/string.h> |
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#include <linux/bitops.h> |
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#include <net/dcbnl.h> |
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#include "spectrum.h" |
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#include "reg.h" |
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static u8 mlxsw_sp_dcbnl_getdcbx(struct net_device __always_unused *dev) |
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{ |
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return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE; |
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} |
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static u8 mlxsw_sp_dcbnl_setdcbx(struct net_device __always_unused *dev, |
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u8 mode) |
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{ |
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return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0; |
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} |
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static int mlxsw_sp_dcbnl_ieee_getets(struct net_device *dev, |
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struct ieee_ets *ets) |
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{ |
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
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memcpy(ets, mlxsw_sp_port->dcb.ets, sizeof(*ets)); |
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return 0; |
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} |
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static int mlxsw_sp_port_ets_validate(struct mlxsw_sp_port *mlxsw_sp_port, |
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struct ieee_ets *ets) |
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{ |
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struct net_device *dev = mlxsw_sp_port->dev; |
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bool has_ets_tc = false; |
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int i, tx_bw_sum = 0; |
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for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { |
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switch (ets->tc_tsa[i]) { |
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case IEEE_8021QAZ_TSA_STRICT: |
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break; |
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case IEEE_8021QAZ_TSA_ETS: |
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has_ets_tc = true; |
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tx_bw_sum += ets->tc_tx_bw[i]; |
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break; |
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default: |
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netdev_err(dev, "Only strict priority and ETS are supported\n"); |
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return -EINVAL; |
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} |
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if (ets->prio_tc[i] >= IEEE_8021QAZ_MAX_TCS) { |
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netdev_err(dev, "Invalid TC\n"); |
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return -EINVAL; |
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} |
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} |
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if (has_ets_tc && tx_bw_sum != 100) { |
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netdev_err(dev, "Total ETS bandwidth should equal 100\n"); |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static int mlxsw_sp_port_headroom_ets_set(struct mlxsw_sp_port *mlxsw_sp_port, |
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struct ieee_ets *ets) |
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{ |
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struct net_device *dev = mlxsw_sp_port->dev; |
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struct mlxsw_sp_hdroom hdroom; |
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int prio; |
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int err; |
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hdroom = *mlxsw_sp_port->hdroom; |
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for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++) |
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hdroom.prios.prio[prio].ets_buf_idx = ets->prio_tc[prio]; |
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mlxsw_sp_hdroom_prios_reset_buf_idx(&hdroom); |
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mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom); |
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mlxsw_sp_hdroom_bufs_reset_sizes(mlxsw_sp_port, &hdroom); |
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err = mlxsw_sp_hdroom_configure(mlxsw_sp_port, &hdroom); |
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if (err) { |
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netdev_err(dev, "Failed to configure port's headroom\n"); |
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return err; |
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} |
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return 0; |
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} |
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static int __mlxsw_sp_dcbnl_ieee_setets(struct mlxsw_sp_port *mlxsw_sp_port, |
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struct ieee_ets *ets) |
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{ |
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struct ieee_ets *my_ets = mlxsw_sp_port->dcb.ets; |
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struct net_device *dev = mlxsw_sp_port->dev; |
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int i, err; |
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/* Egress configuration. */ |
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for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { |
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bool dwrr = ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS; |
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u8 weight = ets->tc_tx_bw[i]; |
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err = mlxsw_sp_port_ets_set(mlxsw_sp_port, |
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MLXSW_REG_QEEC_HR_SUBGROUP, i, |
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0, dwrr, weight); |
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if (err) { |
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netdev_err(dev, "Failed to link subgroup ETS element %d to group\n", |
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i); |
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goto err_port_ets_set; |
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} |
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} |
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for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { |
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err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, |
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ets->prio_tc[i]); |
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if (err) { |
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netdev_err(dev, "Failed to map prio %d to TC %d\n", i, |
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ets->prio_tc[i]); |
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goto err_port_prio_tc_set; |
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} |
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} |
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/* Ingress configuration. */ |
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err = mlxsw_sp_port_headroom_ets_set(mlxsw_sp_port, ets); |
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if (err) |
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goto err_port_headroom_set; |
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return 0; |
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err_port_headroom_set: |
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i = IEEE_8021QAZ_MAX_TCS; |
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err_port_prio_tc_set: |
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for (i--; i >= 0; i--) |
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mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, my_ets->prio_tc[i]); |
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i = IEEE_8021QAZ_MAX_TCS; |
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err_port_ets_set: |
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for (i--; i >= 0; i--) { |
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bool dwrr = my_ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS; |
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u8 weight = my_ets->tc_tx_bw[i]; |
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err = mlxsw_sp_port_ets_set(mlxsw_sp_port, |
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MLXSW_REG_QEEC_HR_SUBGROUP, i, |
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0, dwrr, weight); |
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} |
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return err; |
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} |
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static int mlxsw_sp_dcbnl_ieee_setets(struct net_device *dev, |
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struct ieee_ets *ets) |
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{ |
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
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int err; |
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err = mlxsw_sp_port_ets_validate(mlxsw_sp_port, ets); |
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if (err) |
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return err; |
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err = __mlxsw_sp_dcbnl_ieee_setets(mlxsw_sp_port, ets); |
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if (err) |
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return err; |
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memcpy(mlxsw_sp_port->dcb.ets, ets, sizeof(*ets)); |
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mlxsw_sp_port->dcb.ets->ets_cap = IEEE_8021QAZ_MAX_TCS; |
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return 0; |
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} |
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static int mlxsw_sp_dcbnl_app_validate(struct net_device *dev, |
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struct dcb_app *app) |
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{ |
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int prio; |
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if (app->priority >= IEEE_8021QAZ_MAX_TCS) { |
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netdev_err(dev, "APP entry with priority value %u is invalid\n", |
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app->priority); |
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return -EINVAL; |
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} |
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switch (app->selector) { |
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case IEEE_8021QAZ_APP_SEL_DSCP: |
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if (app->protocol >= 64) { |
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netdev_err(dev, "DSCP APP entry with protocol value %u is invalid\n", |
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app->protocol); |
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return -EINVAL; |
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} |
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/* Warn about any DSCP APP entries with the same PID. */ |
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prio = fls(dcb_ieee_getapp_mask(dev, app)); |
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if (prio--) { |
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if (prio < app->priority) |
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netdev_warn(dev, "Choosing priority %d for DSCP %d in favor of previously-active value of %d\n", |
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app->priority, app->protocol, prio); |
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else if (prio > app->priority) |
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netdev_warn(dev, "Ignoring new priority %d for DSCP %d in favor of current value of %d\n", |
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app->priority, app->protocol, prio); |
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} |
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break; |
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case IEEE_8021QAZ_APP_SEL_ETHERTYPE: |
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if (app->protocol) { |
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netdev_err(dev, "EtherType APP entries with protocol value != 0 not supported\n"); |
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return -EINVAL; |
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} |
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break; |
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default: |
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netdev_err(dev, "APP entries with selector %u not supported\n", |
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app->selector); |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static u8 |
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mlxsw_sp_port_dcb_app_default_prio(struct mlxsw_sp_port *mlxsw_sp_port) |
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{ |
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u8 prio_mask; |
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prio_mask = dcb_ieee_getapp_default_prio_mask(mlxsw_sp_port->dev); |
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if (prio_mask) |
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/* Take the highest configured priority. */ |
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return fls(prio_mask) - 1; |
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return 0; |
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} |
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static void |
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mlxsw_sp_port_dcb_app_dscp_prio_map(struct mlxsw_sp_port *mlxsw_sp_port, |
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u8 default_prio, |
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struct dcb_ieee_app_dscp_map *map) |
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{ |
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int i; |
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dcb_ieee_getapp_dscp_prio_mask_map(mlxsw_sp_port->dev, map); |
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for (i = 0; i < ARRAY_SIZE(map->map); ++i) { |
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if (map->map[i]) |
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map->map[i] = fls(map->map[i]) - 1; |
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else |
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map->map[i] = default_prio; |
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} |
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} |
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static bool |
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mlxsw_sp_port_dcb_app_prio_dscp_map(struct mlxsw_sp_port *mlxsw_sp_port, |
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struct dcb_ieee_app_prio_map *map) |
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{ |
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bool have_dscp = false; |
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int i; |
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dcb_ieee_getapp_prio_dscp_mask_map(mlxsw_sp_port->dev, map); |
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for (i = 0; i < ARRAY_SIZE(map->map); ++i) { |
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if (map->map[i]) { |
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map->map[i] = fls64(map->map[i]) - 1; |
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have_dscp = true; |
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} |
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} |
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return have_dscp; |
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} |
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static int |
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mlxsw_sp_port_dcb_app_update_qpts(struct mlxsw_sp_port *mlxsw_sp_port, |
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enum mlxsw_reg_qpts_trust_state ts) |
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{ |
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
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char qpts_pl[MLXSW_REG_QPTS_LEN]; |
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mlxsw_reg_qpts_pack(qpts_pl, mlxsw_sp_port->local_port, ts); |
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpts), qpts_pl); |
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} |
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static int |
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mlxsw_sp_port_dcb_app_update_qrwe(struct mlxsw_sp_port *mlxsw_sp_port, |
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bool rewrite_dscp) |
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{ |
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
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char qrwe_pl[MLXSW_REG_QRWE_LEN]; |
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mlxsw_reg_qrwe_pack(qrwe_pl, mlxsw_sp_port->local_port, |
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false, rewrite_dscp); |
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qrwe), qrwe_pl); |
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} |
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static int |
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mlxsw_sp_port_dcb_toggle_trust(struct mlxsw_sp_port *mlxsw_sp_port, |
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enum mlxsw_reg_qpts_trust_state ts) |
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{ |
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bool rewrite_dscp = ts == MLXSW_REG_QPTS_TRUST_STATE_DSCP; |
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int err; |
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if (mlxsw_sp_port->dcb.trust_state == ts) |
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return 0; |
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err = mlxsw_sp_port_dcb_app_update_qpts(mlxsw_sp_port, ts); |
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if (err) |
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return err; |
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err = mlxsw_sp_port_dcb_app_update_qrwe(mlxsw_sp_port, rewrite_dscp); |
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if (err) |
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goto err_update_qrwe; |
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mlxsw_sp_port->dcb.trust_state = ts; |
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return 0; |
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err_update_qrwe: |
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mlxsw_sp_port_dcb_app_update_qpts(mlxsw_sp_port, |
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mlxsw_sp_port->dcb.trust_state); |
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return err; |
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} |
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static int |
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mlxsw_sp_port_dcb_app_update_qpdp(struct mlxsw_sp_port *mlxsw_sp_port, |
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u8 default_prio) |
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{ |
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
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char qpdp_pl[MLXSW_REG_QPDP_LEN]; |
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mlxsw_reg_qpdp_pack(qpdp_pl, mlxsw_sp_port->local_port, default_prio); |
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpdp), qpdp_pl); |
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} |
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static int |
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mlxsw_sp_port_dcb_app_update_qpdpm(struct mlxsw_sp_port *mlxsw_sp_port, |
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struct dcb_ieee_app_dscp_map *map) |
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{ |
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
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char qpdpm_pl[MLXSW_REG_QPDPM_LEN]; |
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short int i; |
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mlxsw_reg_qpdpm_pack(qpdpm_pl, mlxsw_sp_port->local_port); |
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for (i = 0; i < ARRAY_SIZE(map->map); ++i) |
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mlxsw_reg_qpdpm_dscp_pack(qpdpm_pl, i, map->map[i]); |
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpdpm), qpdpm_pl); |
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} |
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static int |
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mlxsw_sp_port_dcb_app_update_qpdsm(struct mlxsw_sp_port *mlxsw_sp_port, |
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struct dcb_ieee_app_prio_map *map) |
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{ |
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
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char qpdsm_pl[MLXSW_REG_QPDSM_LEN]; |
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short int i; |
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mlxsw_reg_qpdsm_pack(qpdsm_pl, mlxsw_sp_port->local_port); |
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for (i = 0; i < ARRAY_SIZE(map->map); ++i) |
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mlxsw_reg_qpdsm_prio_pack(qpdsm_pl, i, map->map[i]); |
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpdsm), qpdsm_pl); |
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} |
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static int mlxsw_sp_port_dcb_app_update(struct mlxsw_sp_port *mlxsw_sp_port) |
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{ |
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struct dcb_ieee_app_prio_map prio_map; |
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struct dcb_ieee_app_dscp_map dscp_map; |
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u8 default_prio; |
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bool have_dscp; |
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int err; |
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default_prio = mlxsw_sp_port_dcb_app_default_prio(mlxsw_sp_port); |
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err = mlxsw_sp_port_dcb_app_update_qpdp(mlxsw_sp_port, default_prio); |
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if (err) { |
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netdev_err(mlxsw_sp_port->dev, "Couldn't configure port default priority\n"); |
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return err; |
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} |
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have_dscp = mlxsw_sp_port_dcb_app_prio_dscp_map(mlxsw_sp_port, |
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&prio_map); |
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mlxsw_sp_port_dcb_app_dscp_prio_map(mlxsw_sp_port, default_prio, |
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&dscp_map); |
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err = mlxsw_sp_port_dcb_app_update_qpdpm(mlxsw_sp_port, |
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&dscp_map); |
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if (err) { |
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netdev_err(mlxsw_sp_port->dev, "Couldn't configure priority map\n"); |
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return err; |
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} |
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err = mlxsw_sp_port_dcb_app_update_qpdsm(mlxsw_sp_port, |
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&prio_map); |
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if (err) { |
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netdev_err(mlxsw_sp_port->dev, "Couldn't configure DSCP rewrite map\n"); |
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return err; |
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} |
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if (!have_dscp) { |
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err = mlxsw_sp_port_dcb_toggle_trust(mlxsw_sp_port, |
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MLXSW_REG_QPTS_TRUST_STATE_PCP); |
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if (err) |
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netdev_err(mlxsw_sp_port->dev, "Couldn't switch to trust L2\n"); |
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return err; |
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} |
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err = mlxsw_sp_port_dcb_toggle_trust(mlxsw_sp_port, |
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MLXSW_REG_QPTS_TRUST_STATE_DSCP); |
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if (err) { |
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/* A failure to set trust DSCP means that the QPDPM and QPDSM |
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* maps installed above are not in effect. And since we are here |
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* attempting to set trust DSCP, we couldn't have attempted to |
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* switch trust to PCP. Thus no cleanup is necessary. |
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*/ |
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netdev_err(mlxsw_sp_port->dev, "Couldn't switch to trust L3\n"); |
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return err; |
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} |
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return 0; |
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} |
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static int mlxsw_sp_dcbnl_ieee_setapp(struct net_device *dev, |
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struct dcb_app *app) |
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{ |
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
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int err; |
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err = mlxsw_sp_dcbnl_app_validate(dev, app); |
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if (err) |
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return err; |
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err = dcb_ieee_setapp(dev, app); |
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if (err) |
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return err; |
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err = mlxsw_sp_port_dcb_app_update(mlxsw_sp_port); |
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if (err) |
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goto err_update; |
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return 0; |
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err_update: |
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dcb_ieee_delapp(dev, app); |
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return err; |
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} |
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static int mlxsw_sp_dcbnl_ieee_delapp(struct net_device *dev, |
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struct dcb_app *app) |
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{ |
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
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int err; |
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|
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err = dcb_ieee_delapp(dev, app); |
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if (err) |
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return err; |
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err = mlxsw_sp_port_dcb_app_update(mlxsw_sp_port); |
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if (err) |
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netdev_err(dev, "Failed to update DCB APP configuration\n"); |
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return 0; |
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} |
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|
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static int mlxsw_sp_dcbnl_ieee_getmaxrate(struct net_device *dev, |
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struct ieee_maxrate *maxrate) |
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{ |
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
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|
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memcpy(maxrate, mlxsw_sp_port->dcb.maxrate, sizeof(*maxrate)); |
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|
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return 0; |
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} |
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static int mlxsw_sp_dcbnl_ieee_setmaxrate(struct net_device *dev, |
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struct ieee_maxrate *maxrate) |
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{ |
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
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struct ieee_maxrate *my_maxrate = mlxsw_sp_port->dcb.maxrate; |
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int err, i; |
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for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { |
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err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port, |
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MLXSW_REG_QEEC_HR_SUBGROUP, |
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i, 0, |
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maxrate->tc_maxrate[i], 0); |
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if (err) { |
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netdev_err(dev, "Failed to set maxrate for TC %d\n", i); |
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goto err_port_ets_maxrate_set; |
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} |
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} |
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memcpy(mlxsw_sp_port->dcb.maxrate, maxrate, sizeof(*maxrate)); |
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return 0; |
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err_port_ets_maxrate_set: |
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for (i--; i >= 0; i--) |
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mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port, |
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MLXSW_REG_QEEC_HR_SUBGROUP, |
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i, 0, |
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my_maxrate->tc_maxrate[i], 0); |
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return err; |
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} |
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|
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static int mlxsw_sp_port_pfc_cnt_get(struct mlxsw_sp_port *mlxsw_sp_port, |
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u8 prio) |
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{ |
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
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struct ieee_pfc *my_pfc = mlxsw_sp_port->dcb.pfc; |
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char ppcnt_pl[MLXSW_REG_PPCNT_LEN]; |
|
int err; |
|
|
|
mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, |
|
MLXSW_REG_PPCNT_PRIO_CNT, prio); |
|
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl); |
|
if (err) |
|
return err; |
|
|
|
my_pfc->requests[prio] = mlxsw_reg_ppcnt_tx_pause_get(ppcnt_pl); |
|
my_pfc->indications[prio] = mlxsw_reg_ppcnt_rx_pause_get(ppcnt_pl); |
|
|
|
return 0; |
|
} |
|
|
|
static int mlxsw_sp_dcbnl_ieee_getpfc(struct net_device *dev, |
|
struct ieee_pfc *pfc) |
|
{ |
|
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
|
int err, i; |
|
|
|
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { |
|
err = mlxsw_sp_port_pfc_cnt_get(mlxsw_sp_port, i); |
|
if (err) { |
|
netdev_err(dev, "Failed to get PFC count for priority %d\n", |
|
i); |
|
return err; |
|
} |
|
} |
|
|
|
memcpy(pfc, mlxsw_sp_port->dcb.pfc, sizeof(*pfc)); |
|
|
|
return 0; |
|
} |
|
|
|
static int mlxsw_sp_port_pfc_set(struct mlxsw_sp_port *mlxsw_sp_port, |
|
struct ieee_pfc *pfc) |
|
{ |
|
char pfcc_pl[MLXSW_REG_PFCC_LEN]; |
|
|
|
mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port); |
|
mlxsw_reg_pfcc_pprx_set(pfcc_pl, mlxsw_sp_port->link.rx_pause); |
|
mlxsw_reg_pfcc_pptx_set(pfcc_pl, mlxsw_sp_port->link.tx_pause); |
|
mlxsw_reg_pfcc_prio_pack(pfcc_pl, pfc->pfc_en); |
|
|
|
return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc), |
|
pfcc_pl); |
|
} |
|
|
|
static int mlxsw_sp_dcbnl_ieee_setpfc(struct net_device *dev, |
|
struct ieee_pfc *pfc) |
|
{ |
|
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
|
bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port); |
|
struct mlxsw_sp_hdroom orig_hdroom; |
|
struct mlxsw_sp_hdroom hdroom; |
|
int prio; |
|
int err; |
|
|
|
if (pause_en && pfc->pfc_en) { |
|
netdev_err(dev, "PAUSE frames already enabled on port\n"); |
|
return -EINVAL; |
|
} |
|
|
|
orig_hdroom = *mlxsw_sp_port->hdroom; |
|
|
|
hdroom = orig_hdroom; |
|
if (pfc->pfc_en) |
|
hdroom.delay_bytes = DIV_ROUND_UP(pfc->delay, BITS_PER_BYTE); |
|
else |
|
hdroom.delay_bytes = 0; |
|
|
|
for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++) |
|
hdroom.prios.prio[prio].lossy = !(pfc->pfc_en & BIT(prio)); |
|
|
|
mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom); |
|
mlxsw_sp_hdroom_bufs_reset_sizes(mlxsw_sp_port, &hdroom); |
|
|
|
err = mlxsw_sp_hdroom_configure(mlxsw_sp_port, &hdroom); |
|
if (err) { |
|
netdev_err(dev, "Failed to configure port's headroom for PFC\n"); |
|
return err; |
|
} |
|
|
|
err = mlxsw_sp_port_pfc_set(mlxsw_sp_port, pfc); |
|
if (err) { |
|
netdev_err(dev, "Failed to configure PFC\n"); |
|
goto err_port_pfc_set; |
|
} |
|
|
|
memcpy(mlxsw_sp_port->dcb.pfc, pfc, sizeof(*pfc)); |
|
mlxsw_sp_port->dcb.pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS; |
|
|
|
return 0; |
|
|
|
err_port_pfc_set: |
|
mlxsw_sp_hdroom_configure(mlxsw_sp_port, &orig_hdroom); |
|
return err; |
|
} |
|
|
|
static int mlxsw_sp_dcbnl_getbuffer(struct net_device *dev, struct dcbnl_buffer *buf) |
|
{ |
|
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
|
struct mlxsw_sp_hdroom *hdroom = mlxsw_sp_port->hdroom; |
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
|
int prio; |
|
int i; |
|
|
|
buf->total_size = 0; |
|
|
|
BUILD_BUG_ON(DCBX_MAX_BUFFERS > MLXSW_SP_PB_COUNT); |
|
for (i = 0; i < MLXSW_SP_PB_COUNT; i++) { |
|
u32 bytes = mlxsw_sp_cells_bytes(mlxsw_sp, hdroom->bufs.buf[i].size_cells); |
|
|
|
if (i < DCBX_MAX_BUFFERS) |
|
buf->buffer_size[i] = bytes; |
|
buf->total_size += bytes; |
|
} |
|
|
|
buf->total_size += mlxsw_sp_cells_bytes(mlxsw_sp, hdroom->int_buf.size_cells); |
|
|
|
for (prio = 0; prio < IEEE_8021Q_MAX_PRIORITIES; prio++) |
|
buf->prio2buffer[prio] = hdroom->prios.prio[prio].buf_idx; |
|
|
|
return 0; |
|
} |
|
|
|
static int mlxsw_sp_dcbnl_setbuffer(struct net_device *dev, struct dcbnl_buffer *buf) |
|
{ |
|
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); |
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; |
|
struct mlxsw_sp_hdroom hdroom; |
|
int prio; |
|
int i; |
|
|
|
hdroom = *mlxsw_sp_port->hdroom; |
|
|
|
if (hdroom.mode != MLXSW_SP_HDROOM_MODE_TC) { |
|
netdev_err(dev, "The use of dcbnl_setbuffer is only allowed if egress is configured using TC\n"); |
|
return -EINVAL; |
|
} |
|
|
|
for (prio = 0; prio < IEEE_8021Q_MAX_PRIORITIES; prio++) |
|
hdroom.prios.prio[prio].set_buf_idx = buf->prio2buffer[prio]; |
|
|
|
BUILD_BUG_ON(DCBX_MAX_BUFFERS > MLXSW_SP_PB_COUNT); |
|
for (i = 0; i < DCBX_MAX_BUFFERS; i++) |
|
hdroom.bufs.buf[i].set_size_cells = mlxsw_sp_bytes_cells(mlxsw_sp, |
|
buf->buffer_size[i]); |
|
|
|
mlxsw_sp_hdroom_prios_reset_buf_idx(&hdroom); |
|
mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom); |
|
mlxsw_sp_hdroom_bufs_reset_sizes(mlxsw_sp_port, &hdroom); |
|
return mlxsw_sp_hdroom_configure(mlxsw_sp_port, &hdroom); |
|
} |
|
|
|
static const struct dcbnl_rtnl_ops mlxsw_sp_dcbnl_ops = { |
|
.ieee_getets = mlxsw_sp_dcbnl_ieee_getets, |
|
.ieee_setets = mlxsw_sp_dcbnl_ieee_setets, |
|
.ieee_getmaxrate = mlxsw_sp_dcbnl_ieee_getmaxrate, |
|
.ieee_setmaxrate = mlxsw_sp_dcbnl_ieee_setmaxrate, |
|
.ieee_getpfc = mlxsw_sp_dcbnl_ieee_getpfc, |
|
.ieee_setpfc = mlxsw_sp_dcbnl_ieee_setpfc, |
|
.ieee_setapp = mlxsw_sp_dcbnl_ieee_setapp, |
|
.ieee_delapp = mlxsw_sp_dcbnl_ieee_delapp, |
|
|
|
.getdcbx = mlxsw_sp_dcbnl_getdcbx, |
|
.setdcbx = mlxsw_sp_dcbnl_setdcbx, |
|
|
|
.dcbnl_getbuffer = mlxsw_sp_dcbnl_getbuffer, |
|
.dcbnl_setbuffer = mlxsw_sp_dcbnl_setbuffer, |
|
}; |
|
|
|
static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port) |
|
{ |
|
mlxsw_sp_port->dcb.ets = kzalloc(sizeof(*mlxsw_sp_port->dcb.ets), |
|
GFP_KERNEL); |
|
if (!mlxsw_sp_port->dcb.ets) |
|
return -ENOMEM; |
|
|
|
mlxsw_sp_port->dcb.ets->ets_cap = IEEE_8021QAZ_MAX_TCS; |
|
|
|
return 0; |
|
} |
|
|
|
static void mlxsw_sp_port_ets_fini(struct mlxsw_sp_port *mlxsw_sp_port) |
|
{ |
|
kfree(mlxsw_sp_port->dcb.ets); |
|
} |
|
|
|
static int mlxsw_sp_port_maxrate_init(struct mlxsw_sp_port *mlxsw_sp_port) |
|
{ |
|
int i; |
|
|
|
mlxsw_sp_port->dcb.maxrate = kmalloc(sizeof(*mlxsw_sp_port->dcb.maxrate), |
|
GFP_KERNEL); |
|
if (!mlxsw_sp_port->dcb.maxrate) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) |
|
mlxsw_sp_port->dcb.maxrate->tc_maxrate[i] = MLXSW_REG_QEEC_MAS_DIS; |
|
|
|
return 0; |
|
} |
|
|
|
static void mlxsw_sp_port_maxrate_fini(struct mlxsw_sp_port *mlxsw_sp_port) |
|
{ |
|
kfree(mlxsw_sp_port->dcb.maxrate); |
|
} |
|
|
|
static int mlxsw_sp_port_pfc_init(struct mlxsw_sp_port *mlxsw_sp_port) |
|
{ |
|
mlxsw_sp_port->dcb.pfc = kzalloc(sizeof(*mlxsw_sp_port->dcb.pfc), |
|
GFP_KERNEL); |
|
if (!mlxsw_sp_port->dcb.pfc) |
|
return -ENOMEM; |
|
|
|
mlxsw_sp_port->dcb.pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS; |
|
|
|
return 0; |
|
} |
|
|
|
static void mlxsw_sp_port_pfc_fini(struct mlxsw_sp_port *mlxsw_sp_port) |
|
{ |
|
kfree(mlxsw_sp_port->dcb.pfc); |
|
} |
|
|
|
int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port) |
|
{ |
|
int err; |
|
|
|
err = mlxsw_sp_port_ets_init(mlxsw_sp_port); |
|
if (err) |
|
return err; |
|
err = mlxsw_sp_port_maxrate_init(mlxsw_sp_port); |
|
if (err) |
|
goto err_port_maxrate_init; |
|
err = mlxsw_sp_port_pfc_init(mlxsw_sp_port); |
|
if (err) |
|
goto err_port_pfc_init; |
|
|
|
mlxsw_sp_port->dcb.trust_state = MLXSW_REG_QPTS_TRUST_STATE_PCP; |
|
mlxsw_sp_port->dev->dcbnl_ops = &mlxsw_sp_dcbnl_ops; |
|
|
|
return 0; |
|
|
|
err_port_pfc_init: |
|
mlxsw_sp_port_maxrate_fini(mlxsw_sp_port); |
|
err_port_maxrate_init: |
|
mlxsw_sp_port_ets_fini(mlxsw_sp_port); |
|
return err; |
|
} |
|
|
|
void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port) |
|
{ |
|
mlxsw_sp_port_pfc_fini(mlxsw_sp_port); |
|
mlxsw_sp_port_maxrate_fini(mlxsw_sp_port); |
|
mlxsw_sp_port_ets_fini(mlxsw_sp_port); |
|
}
|
|
|