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479 lines
13 KiB
479 lines
13 KiB
// 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 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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snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name); |
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*data += ETH_GSTRING_LEN; |
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} |
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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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{ |
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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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{ |
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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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snprintf(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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strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3", |
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sizeof(info->driver)); |
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strlcpy(info->fw_version, card->info.mcl_level, |
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sizeof(info->fw_version)); |
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snprintf(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, |
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1000baseT_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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1000baseT_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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1000baseT_Half); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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1000baseT_Half); |
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fallthrough; |
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case SPEED_100: |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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100baseT_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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100baseT_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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100baseT_Half); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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100baseT_Half); |
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fallthrough; |
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case SPEED_10: |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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10baseT_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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10baseT_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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10baseT_Half); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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10baseT_Half); |
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break; |
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default: |
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break; |
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} |
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break; |
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case PORT_FIBRE: |
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ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); |
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switch (cmd->base.speed) { |
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case SPEED_25000: |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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25000baseSR_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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25000baseSR_Full); |
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break; |
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case SPEED_10000: |
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if (link_mode == QETH_LINK_MODE_FIBRE_LONG) { |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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10000baseLR_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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10000baseLR_Full); |
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} else if (link_mode == QETH_LINK_MODE_FIBRE_SHORT) { |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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10000baseSR_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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10000baseSR_Full); |
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} |
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break; |
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case SPEED_1000: |
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ethtool_link_ksettings_add_link_mode(cmd, supported, |
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1000baseX_Full); |
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ethtool_link_ksettings_add_link_mode(cmd, advertising, |
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1000baseX_Full); |
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break; |
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default: |
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break; |
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} |
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break; |
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default: |
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break; |
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} |
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} |
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static int qeth_get_link_ksettings(struct net_device *netdev, |
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struct ethtool_link_ksettings *cmd) |
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{ |
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struct qeth_card *card = netdev->ml_priv; |
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struct qeth_link_info link_info; |
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cmd->base.speed = card->info.link_info.speed; |
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cmd->base.duplex = card->info.link_info.duplex; |
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cmd->base.port = card->info.link_info.port; |
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cmd->base.autoneg = AUTONEG_ENABLE; |
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cmd->base.phy_address = 0; |
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cmd->base.mdio_support = 0; |
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cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; |
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cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; |
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/* Check if we can obtain more accurate information. */ |
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if (!qeth_query_card_info(card, &link_info)) { |
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if (link_info.speed != SPEED_UNKNOWN) |
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cmd->base.speed = link_info.speed; |
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if (link_info.duplex != DUPLEX_UNKNOWN) |
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cmd->base.duplex = link_info.duplex; |
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if (link_info.port != PORT_OTHER) |
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cmd->base.port = link_info.port; |
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} |
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qeth_set_ethtool_link_modes(cmd, card->info.link_info.link_mode); |
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return 0; |
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} |
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const struct ethtool_ops qeth_ethtool_ops = { |
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.supported_coalesce_params = ETHTOOL_COALESCE_TX_USECS | |
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ETHTOOL_COALESCE_TX_MAX_FRAMES, |
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.get_link = ethtool_op_get_link, |
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.set_coalesce = qeth_set_coalesce, |
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.get_ringparam = qeth_get_ringparam, |
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.get_strings = qeth_get_strings, |
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.get_ethtool_stats = qeth_get_ethtool_stats, |
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.get_sset_count = qeth_get_sset_count, |
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.get_drvinfo = qeth_get_drvinfo, |
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.get_channels = qeth_get_channels, |
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.set_channels = qeth_set_channels, |
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.get_ts_info = qeth_get_ts_info, |
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.get_tunable = qeth_get_tunable, |
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.set_tunable = qeth_set_tunable, |
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.get_per_queue_coalesce = qeth_get_per_queue_coalesce, |
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.set_per_queue_coalesce = qeth_set_per_queue_coalesce, |
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.get_link_ksettings = qeth_get_link_ksettings, |
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}; |
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const struct ethtool_ops qeth_osn_ethtool_ops = { |
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.get_strings = qeth_get_strings, |
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.get_ethtool_stats = qeth_get_ethtool_stats, |
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.get_sset_count = qeth_get_sset_count, |
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.get_drvinfo = qeth_get_drvinfo, |
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};
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