466 lines
13 KiB
C
466 lines
13 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright IBM Corp. 2018
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*/
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#define KMSG_COMPONENT "qeth"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/ethtool.h>
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#include "qeth_core.h"
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#define QETH_TXQ_STAT(_name, _stat) { \
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.name = _name, \
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.offset = offsetof(struct qeth_out_q_stats, _stat) \
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}
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#define QETH_CARD_STAT(_name, _stat) { \
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.name = _name, \
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.offset = offsetof(struct qeth_card_stats, _stat) \
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}
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struct qeth_stats {
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char name[ETH_GSTRING_LEN];
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unsigned int offset;
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};
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static const struct qeth_stats txq_stats[] = {
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QETH_TXQ_STAT("IO buffers", bufs),
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QETH_TXQ_STAT("IO buffer elements", buf_elements),
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QETH_TXQ_STAT("packed IO buffers", bufs_pack),
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QETH_TXQ_STAT("skbs", tx_packets),
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QETH_TXQ_STAT("packed skbs", skbs_pack),
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QETH_TXQ_STAT("SG skbs", skbs_sg),
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QETH_TXQ_STAT("HW csum skbs", skbs_csum),
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QETH_TXQ_STAT("TSO skbs", skbs_tso),
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QETH_TXQ_STAT("linearized skbs", skbs_linearized),
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QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail),
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QETH_TXQ_STAT("TSO bytes", tso_bytes),
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QETH_TXQ_STAT("Packing mode switches", packing_mode_switch),
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QETH_TXQ_STAT("Queue stopped", stopped),
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QETH_TXQ_STAT("Doorbell", doorbell),
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QETH_TXQ_STAT("IRQ for frames", coal_frames),
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QETH_TXQ_STAT("Completion IRQ", completion_irq),
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QETH_TXQ_STAT("Completion yield", completion_yield),
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QETH_TXQ_STAT("Completion timer", completion_timer),
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};
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static const struct qeth_stats card_stats[] = {
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QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
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QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
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QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
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QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
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QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
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QETH_CARD_STAT("rx0 dropped, no memory", rx_dropped_nomem),
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QETH_CARD_STAT("rx0 dropped, bad format", rx_dropped_notsupp),
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QETH_CARD_STAT("rx0 dropped, runt", rx_dropped_runt),
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};
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#define TXQ_STATS_LEN ARRAY_SIZE(txq_stats)
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#define CARD_STATS_LEN ARRAY_SIZE(card_stats)
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static void qeth_add_stat_data(u64 **dst, void *src,
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const struct qeth_stats stats[],
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unsigned int size)
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{
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unsigned int i;
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char *stat;
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for (i = 0; i < size; i++) {
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stat = (char *)src + stats[i].offset;
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**dst = *(u64 *)stat;
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(*dst)++;
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}
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}
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static void qeth_add_stat_strings(u8 **data, const char *prefix,
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const struct qeth_stats stats[],
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unsigned int size)
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{
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unsigned int i;
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for (i = 0; i < size; i++)
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ethtool_sprintf(data, "%s%s", prefix, stats[i].name);
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}
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static int qeth_get_sset_count(struct net_device *dev, int stringset)
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{
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struct qeth_card *card = dev->ml_priv;
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switch (stringset) {
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case ETH_SS_STATS:
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return CARD_STATS_LEN +
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card->qdio.no_out_queues * TXQ_STATS_LEN;
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default:
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return -EINVAL;
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}
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}
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static void qeth_get_ethtool_stats(struct net_device *dev,
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struct ethtool_stats *stats, u64 *data)
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{
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struct qeth_card *card = dev->ml_priv;
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unsigned int i;
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qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
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for (i = 0; i < card->qdio.no_out_queues; i++)
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qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
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txq_stats, TXQ_STATS_LEN);
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}
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static void __qeth_set_coalesce(struct net_device *dev,
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struct qeth_qdio_out_q *queue,
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struct ethtool_coalesce *coal)
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{
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WRITE_ONCE(queue->coalesce_usecs, coal->tx_coalesce_usecs);
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WRITE_ONCE(queue->max_coalesced_frames, coal->tx_max_coalesced_frames);
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if (coal->tx_coalesce_usecs &&
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netif_running(dev) &&
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!qeth_out_queue_is_empty(queue))
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qeth_tx_arm_timer(queue, coal->tx_coalesce_usecs);
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}
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static int qeth_set_coalesce(struct net_device *dev,
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struct ethtool_coalesce *coal,
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struct kernel_ethtool_coalesce *kernel_coal,
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struct netlink_ext_ack *extack)
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{
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struct qeth_card *card = dev->ml_priv;
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struct qeth_qdio_out_q *queue;
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unsigned int i;
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if (!IS_IQD(card))
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return -EOPNOTSUPP;
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if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
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return -EINVAL;
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qeth_for_each_output_queue(card, queue, i)
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__qeth_set_coalesce(dev, queue, coal);
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return 0;
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}
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static void qeth_get_ringparam(struct net_device *dev,
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struct ethtool_ringparam *param,
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struct kernel_ethtool_ringparam *kernel_param,
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struct netlink_ext_ack *extack)
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{
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struct qeth_card *card = dev->ml_priv;
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param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
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param->rx_mini_max_pending = 0;
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param->rx_jumbo_max_pending = 0;
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param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
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param->rx_pending = card->qdio.in_buf_pool.buf_count;
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param->rx_mini_pending = 0;
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param->rx_jumbo_pending = 0;
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param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
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}
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static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
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{
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struct qeth_card *card = dev->ml_priv;
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char prefix[ETH_GSTRING_LEN] = "";
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unsigned int i;
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switch (stringset) {
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case ETH_SS_STATS:
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qeth_add_stat_strings(&data, prefix, card_stats,
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CARD_STATS_LEN);
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for (i = 0; i < card->qdio.no_out_queues; i++) {
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scnprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
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qeth_add_stat_strings(&data, prefix, txq_stats,
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TXQ_STATS_LEN);
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}
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break;
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default:
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WARN_ON(1);
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break;
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}
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}
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static void qeth_get_drvinfo(struct net_device *dev,
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struct ethtool_drvinfo *info)
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{
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struct qeth_card *card = dev->ml_priv;
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strscpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
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sizeof(info->driver));
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strscpy(info->fw_version, card->info.mcl_level,
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sizeof(info->fw_version));
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scnprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
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CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
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}
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static void qeth_get_channels(struct net_device *dev,
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struct ethtool_channels *channels)
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{
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struct qeth_card *card = dev->ml_priv;
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channels->max_rx = dev->num_rx_queues;
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channels->max_tx = card->qdio.no_out_queues;
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channels->max_other = 0;
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channels->max_combined = 0;
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channels->rx_count = dev->real_num_rx_queues;
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channels->tx_count = dev->real_num_tx_queues;
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channels->other_count = 0;
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channels->combined_count = 0;
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}
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static int qeth_set_channels(struct net_device *dev,
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struct ethtool_channels *channels)
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{
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struct qeth_priv *priv = netdev_priv(dev);
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struct qeth_card *card = dev->ml_priv;
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int rc;
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if (channels->rx_count == 0 || channels->tx_count == 0)
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return -EINVAL;
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if (channels->tx_count > card->qdio.no_out_queues)
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return -EINVAL;
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/* Prio-queueing needs all TX queues: */
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if (qeth_uses_tx_prio_queueing(card))
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return -EPERM;
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if (IS_IQD(card)) {
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if (channels->tx_count < QETH_IQD_MIN_TXQ)
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return -EINVAL;
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/* Reject downgrade while running. It could push displaced
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* ucast flows onto txq0, which is reserved for mcast.
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*/
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if (netif_running(dev) &&
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channels->tx_count < dev->real_num_tx_queues)
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return -EPERM;
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}
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rc = qeth_set_real_num_tx_queues(card, channels->tx_count);
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if (!rc)
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priv->tx_wanted_queues = channels->tx_count;
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return rc;
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}
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static int qeth_get_ts_info(struct net_device *dev,
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struct ethtool_ts_info *info)
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{
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struct qeth_card *card = dev->ml_priv;
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if (!IS_IQD(card))
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return -EOPNOTSUPP;
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return ethtool_op_get_ts_info(dev, info);
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}
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static int qeth_get_tunable(struct net_device *dev,
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const struct ethtool_tunable *tuna, void *data)
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{
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struct qeth_priv *priv = netdev_priv(dev);
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switch (tuna->id) {
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case ETHTOOL_RX_COPYBREAK:
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*(u32 *)data = priv->rx_copybreak;
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return 0;
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default:
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return -EOPNOTSUPP;
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}
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}
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static int qeth_set_tunable(struct net_device *dev,
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const struct ethtool_tunable *tuna,
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const void *data)
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{
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struct qeth_priv *priv = netdev_priv(dev);
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switch (tuna->id) {
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case ETHTOOL_RX_COPYBREAK:
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WRITE_ONCE(priv->rx_copybreak, *(u32 *)data);
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return 0;
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default:
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return -EOPNOTSUPP;
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}
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}
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static int qeth_get_per_queue_coalesce(struct net_device *dev, u32 __queue,
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struct ethtool_coalesce *coal)
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{
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struct qeth_card *card = dev->ml_priv;
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struct qeth_qdio_out_q *queue;
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if (!IS_IQD(card))
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return -EOPNOTSUPP;
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if (__queue >= card->qdio.no_out_queues)
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return -EINVAL;
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queue = card->qdio.out_qs[__queue];
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coal->tx_coalesce_usecs = queue->coalesce_usecs;
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coal->tx_max_coalesced_frames = queue->max_coalesced_frames;
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return 0;
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}
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static int qeth_set_per_queue_coalesce(struct net_device *dev, u32 queue,
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struct ethtool_coalesce *coal)
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{
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struct qeth_card *card = dev->ml_priv;
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if (!IS_IQD(card))
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return -EOPNOTSUPP;
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if (queue >= card->qdio.no_out_queues)
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return -EINVAL;
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if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
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return -EINVAL;
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__qeth_set_coalesce(dev, card->qdio.out_qs[queue], coal);
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return 0;
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}
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/* Helper function to fill 'advertising' and 'supported' which are the same. */
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/* Autoneg and full-duplex are supported and advertised unconditionally. */
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/* Always advertise and support all speeds up to specified, and only one */
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/* specified port type. */
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static void qeth_set_ethtool_link_modes(struct ethtool_link_ksettings *cmd,
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enum qeth_link_mode link_mode)
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{
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ethtool_link_ksettings_zero_link_mode(cmd, supported);
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ethtool_link_ksettings_zero_link_mode(cmd, advertising);
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ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
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ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
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ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
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switch (cmd->base.port) {
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case PORT_TP:
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ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
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ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
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switch (cmd->base.speed) {
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case SPEED_10000:
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ethtool_link_ksettings_add_link_mode(cmd, supported,
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10000baseT_Full);
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ethtool_link_ksettings_add_link_mode(cmd, advertising,
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10000baseT_Full);
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fallthrough;
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case SPEED_1000:
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ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
1000baseT_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
1000baseT_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
1000baseT_Half);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
1000baseT_Half);
|
||
|
|
fallthrough;
|
||
|
|
case SPEED_100:
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
100baseT_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
100baseT_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
100baseT_Half);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
100baseT_Half);
|
||
|
|
fallthrough;
|
||
|
|
case SPEED_10:
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
10baseT_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
10baseT_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
10baseT_Half);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
10baseT_Half);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
case PORT_FIBRE:
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
|
||
|
|
|
||
|
|
switch (cmd->base.speed) {
|
||
|
|
case SPEED_25000:
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
25000baseSR_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
25000baseSR_Full);
|
||
|
|
break;
|
||
|
|
case SPEED_10000:
|
||
|
|
if (link_mode == QETH_LINK_MODE_FIBRE_LONG) {
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
10000baseLR_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
10000baseLR_Full);
|
||
|
|
} else if (link_mode == QETH_LINK_MODE_FIBRE_SHORT) {
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
10000baseSR_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
10000baseSR_Full);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case SPEED_1000:
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, supported,
|
||
|
|
1000baseX_Full);
|
||
|
|
ethtool_link_ksettings_add_link_mode(cmd, advertising,
|
||
|
|
1000baseX_Full);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static int qeth_get_link_ksettings(struct net_device *netdev,
|
||
|
|
struct ethtool_link_ksettings *cmd)
|
||
|
|
{
|
||
|
|
struct qeth_card *card = netdev->ml_priv;
|
||
|
|
|
||
|
|
QETH_CARD_TEXT(card, 4, "ethtglks");
|
||
|
|
cmd->base.speed = card->info.link_info.speed;
|
||
|
|
cmd->base.duplex = card->info.link_info.duplex;
|
||
|
|
cmd->base.port = card->info.link_info.port;
|
||
|
|
cmd->base.autoneg = AUTONEG_ENABLE;
|
||
|
|
cmd->base.phy_address = 0;
|
||
|
|
cmd->base.mdio_support = 0;
|
||
|
|
cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
|
||
|
|
cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
|
||
|
|
|
||
|
|
qeth_set_ethtool_link_modes(cmd, card->info.link_info.link_mode);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
const struct ethtool_ops qeth_ethtool_ops = {
|
||
|
|
.supported_coalesce_params = ETHTOOL_COALESCE_TX_USECS |
|
||
|
|
ETHTOOL_COALESCE_TX_MAX_FRAMES,
|
||
|
|
.get_link = ethtool_op_get_link,
|
||
|
|
.set_coalesce = qeth_set_coalesce,
|
||
|
|
.get_ringparam = qeth_get_ringparam,
|
||
|
|
.get_strings = qeth_get_strings,
|
||
|
|
.get_ethtool_stats = qeth_get_ethtool_stats,
|
||
|
|
.get_sset_count = qeth_get_sset_count,
|
||
|
|
.get_drvinfo = qeth_get_drvinfo,
|
||
|
|
.get_channels = qeth_get_channels,
|
||
|
|
.set_channels = qeth_set_channels,
|
||
|
|
.get_ts_info = qeth_get_ts_info,
|
||
|
|
.get_tunable = qeth_get_tunable,
|
||
|
|
.set_tunable = qeth_set_tunable,
|
||
|
|
.get_per_queue_coalesce = qeth_get_per_queue_coalesce,
|
||
|
|
.set_per_queue_coalesce = qeth_set_per_queue_coalesce,
|
||
|
|
.get_link_ksettings = qeth_get_link_ksettings,
|
||
|
|
};
|