// SPDX-License-Identifier: GPL-2.0-only /**************************************************************************** * Driver for Solarflare network controllers and boards * Copyright 2005-2006 Fen Systems Ltd. * Copyright 2006-2013 Solarflare Communications Inc. */ #include #include #include #include #include "net_driver.h" #include "workarounds.h" #include "selftest.h" #include "efx.h" #include "efx_channels.h" #include "rx_common.h" #include "tx_common.h" #include "ethtool_common.h" #include "filter.h" #include "nic.h" #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB /************************************************************************** * * Ethtool operations * ************************************************************************** */ /* Identify device by flashing LEDs */ static int efx_ethtool_phys_id(struct net_device *net_dev, enum ethtool_phys_id_state state) { struct efx_nic *efx = efx_netdev_priv(net_dev); enum efx_led_mode mode = EFX_LED_DEFAULT; switch (state) { case ETHTOOL_ID_ON: mode = EFX_LED_ON; break; case ETHTOOL_ID_OFF: mode = EFX_LED_OFF; break; case ETHTOOL_ID_INACTIVE: mode = EFX_LED_DEFAULT; break; case ETHTOOL_ID_ACTIVE: return 1; /* cycle on/off once per second */ } return efx_mcdi_set_id_led(efx, mode); } static int efx_ethtool_get_regs_len(struct net_device *net_dev) { return efx_nic_get_regs_len(efx_netdev_priv(net_dev)); } static void efx_ethtool_get_regs(struct net_device *net_dev, struct ethtool_regs *regs, void *buf) { struct efx_nic *efx = efx_netdev_priv(net_dev); regs->version = efx->type->revision; efx_nic_get_regs(efx, buf); } /* * Each channel has a single IRQ and moderation timer, started by any * completion (or other event). Unless the module parameter * separate_tx_channels is set, IRQs and moderation are therefore * shared between RX and TX completions. In this case, when RX IRQ * moderation is explicitly changed then TX IRQ moderation is * automatically changed too, but otherwise we fail if the two values * are requested to be different. * * The hardware does not support a limit on the number of completions * before an IRQ, so we do not use the max_frames fields. We should * report and require that max_frames == (usecs != 0), but this would * invalidate existing user documentation. * * The hardware does not have distinct settings for interrupt * moderation while the previous IRQ is being handled, so we should * not use the 'irq' fields. However, an earlier developer * misunderstood the meaning of the 'irq' fields and the driver did * not support the standard fields. To avoid invalidating existing * user documentation, we report and accept changes through either the * standard or 'irq' fields. If both are changed at the same time, we * prefer the standard field. * * We implement adaptive IRQ moderation, but use a different algorithm * from that assumed in the definition of struct ethtool_coalesce. * Therefore we do not use any of the adaptive moderation parameters * in it. */ static int efx_ethtool_get_coalesce(struct net_device *net_dev, struct ethtool_coalesce *coalesce, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack) { struct efx_nic *efx = efx_netdev_priv(net_dev); unsigned int tx_usecs, rx_usecs; bool rx_adaptive; efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive); coalesce->tx_coalesce_usecs = tx_usecs; coalesce->tx_coalesce_usecs_irq = tx_usecs; coalesce->rx_coalesce_usecs = rx_usecs; coalesce->rx_coalesce_usecs_irq = rx_usecs; coalesce->use_adaptive_rx_coalesce = rx_adaptive; return 0; } static int efx_ethtool_set_coalesce(struct net_device *net_dev, struct ethtool_coalesce *coalesce, struct kernel_ethtool_coalesce *kernel_coal, struct netlink_ext_ack *extack) { struct efx_nic *efx = efx_netdev_priv(net_dev); struct efx_channel *channel; unsigned int tx_usecs, rx_usecs; bool adaptive, rx_may_override_tx; int rc; efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive); if (coalesce->rx_coalesce_usecs != rx_usecs) rx_usecs = coalesce->rx_coalesce_usecs; else rx_usecs = coalesce->rx_coalesce_usecs_irq; adaptive = coalesce->use_adaptive_rx_coalesce; /* If channels are shared, TX IRQ moderation can be quietly * overridden unless it is changed from its old value. */ rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs && coalesce->tx_coalesce_usecs_irq == tx_usecs); if (coalesce->tx_coalesce_usecs != tx_usecs) tx_usecs = coalesce->tx_coalesce_usecs; else tx_usecs = coalesce->tx_coalesce_usecs_irq; rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive, rx_may_override_tx); if (rc != 0) return rc; efx_for_each_channel(channel, efx) efx->type->push_irq_moderation(channel); return 0; } static void efx_ethtool_get_ringparam(struct net_device *net_dev, struct ethtool_ringparam *ring, struct kernel_ethtool_ringparam *kernel_ring, struct netlink_ext_ack *extack) { struct efx_nic *efx = efx_netdev_priv(net_dev); ring->rx_max_pending = EFX_MAX_DMAQ_SIZE; ring->tx_max_pending = EFX_TXQ_MAX_ENT(efx); ring->rx_pending = efx->rxq_entries; ring->tx_pending = efx->txq_entries; } static int efx_ethtool_set_ringparam(struct net_device *net_dev, struct ethtool_ringparam *ring, struct kernel_ethtool_ringparam *kernel_ring, struct netlink_ext_ack *extack) { struct efx_nic *efx = efx_netdev_priv(net_dev); u32 txq_entries; if (ring->rx_mini_pending || ring->rx_jumbo_pending || ring->rx_pending > EFX_MAX_DMAQ_SIZE || ring->tx_pending > EFX_TXQ_MAX_ENT(efx)) return -EINVAL; if (ring->rx_pending < EFX_RXQ_MIN_ENT) { netif_err(efx, drv, efx->net_dev, "RX queues cannot be smaller than %u\n", EFX_RXQ_MIN_ENT); return -EINVAL; } txq_entries = max(ring->tx_pending, EFX_TXQ_MIN_ENT(efx)); if (txq_entries != ring->tx_pending) netif_warn(efx, drv, efx->net_dev, "increasing TX queue size to minimum of %u\n", txq_entries); return efx_realloc_channels(efx, ring->rx_pending, txq_entries); } static void efx_ethtool_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol) { struct efx_nic *efx = efx_netdev_priv(net_dev); return efx->type->get_wol(efx, wol); } static int efx_ethtool_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol) { struct efx_nic *efx = efx_netdev_priv(net_dev); return efx->type->set_wol(efx, wol->wolopts); } static void efx_ethtool_get_fec_stats(struct net_device *net_dev, struct ethtool_fec_stats *fec_stats) { struct efx_nic *efx = efx_netdev_priv(net_dev); if (efx->type->get_fec_stats) efx->type->get_fec_stats(efx, fec_stats); } static int efx_ethtool_get_ts_info(struct net_device *net_dev, struct kernel_ethtool_ts_info *ts_info) { struct efx_nic *efx = efx_netdev_priv(net_dev); efx_ptp_get_ts_info(efx, ts_info); return 0; } const struct ethtool_ops efx_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_USECS | ETHTOOL_COALESCE_USECS_IRQ | ETHTOOL_COALESCE_USE_ADAPTIVE_RX, .get_drvinfo = efx_ethtool_get_drvinfo, .get_regs_len = efx_ethtool_get_regs_len, .get_regs = efx_ethtool_get_regs, .get_msglevel = efx_ethtool_get_msglevel, .set_msglevel = efx_ethtool_set_msglevel, .get_link = ethtool_op_get_link, .get_coalesce = efx_ethtool_get_coalesce, .set_coalesce = efx_ethtool_set_coalesce, .get_ringparam = efx_ethtool_get_ringparam, .set_ringparam = efx_ethtool_set_ringparam, .get_pauseparam = efx_ethtool_get_pauseparam, .set_pauseparam = efx_ethtool_set_pauseparam, .get_sset_count = efx_ethtool_get_sset_count, .self_test = efx_ethtool_self_test, .get_strings = efx_ethtool_get_strings, .set_phys_id = efx_ethtool_phys_id, .get_ethtool_stats = efx_ethtool_get_stats, .get_wol = efx_ethtool_get_wol, .set_wol = efx_ethtool_set_wol, .reset = efx_ethtool_reset, .get_rxnfc = efx_ethtool_get_rxnfc, .set_rxnfc = efx_ethtool_set_rxnfc, .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size, .get_rxfh_key_size = efx_ethtool_get_rxfh_key_size, .rxfh_per_ctx_key = true, .rxfh_priv_size = sizeof(struct efx_rss_context_priv), .get_rxfh = efx_ethtool_get_rxfh, .set_rxfh = efx_ethtool_set_rxfh, .create_rxfh_context = efx_ethtool_create_rxfh_context, .modify_rxfh_context = efx_ethtool_modify_rxfh_context, .remove_rxfh_context = efx_ethtool_remove_rxfh_context, .get_ts_info = efx_ethtool_get_ts_info, .get_module_info = efx_ethtool_get_module_info, .get_module_eeprom = efx_ethtool_get_module_eeprom, .get_link_ksettings = efx_ethtool_get_link_ksettings, .set_link_ksettings = efx_ethtool_set_link_ksettings, .get_fec_stats = efx_ethtool_get_fec_stats, .get_fecparam = efx_ethtool_get_fecparam, .set_fecparam = efx_ethtool_set_fecparam, };