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