/**************************************************************************** * Driver for Solarflare Solarstorm network controllers and boards * Copyright 2005-2006 Fen Systems Ltd. * Copyright 2006-2008 Solarflare Communications Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation, incorporated herein by reference. */ #include <linux/netdevice.h> #include <linux/ethtool.h> #include <linux/rtnetlink.h> #include "net_driver.h" #include "workarounds.h" #include "selftest.h" #include "efx.h" #include "ethtool.h" #include "falcon.h" #include "spi.h" #include "mdio_10g.h" const char *efx_loopback_mode_names[] = { [LOOPBACK_NONE] = "NONE", [LOOPBACK_GMAC] = "GMAC", [LOOPBACK_XGMII] = "XGMII", [LOOPBACK_XGXS] = "XGXS", [LOOPBACK_XAUI] = "XAUI", [LOOPBACK_GPHY] = "GPHY", [LOOPBACK_PHYXS] = "PHYXS", [LOOPBACK_PCS] = "PCS", [LOOPBACK_PMAPMD] = "PMA/PMD", [LOOPBACK_NETWORK] = "NETWORK", }; struct ethtool_string { char name[ETH_GSTRING_LEN]; }; struct efx_ethtool_stat { const char *name; enum { EFX_ETHTOOL_STAT_SOURCE_mac_stats, EFX_ETHTOOL_STAT_SOURCE_nic, EFX_ETHTOOL_STAT_SOURCE_channel } source; unsigned offset; u64(*get_stat) (void *field); /* Reader function */ }; /* Initialiser for a struct #efx_ethtool_stat with type-checking */ #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \ get_stat_function) { \ .name = #stat_name, \ .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \ .offset = ((((field_type *) 0) == \ &((struct efx_##source_name *)0)->field) ? \ offsetof(struct efx_##source_name, field) : \ offsetof(struct efx_##source_name, field)), \ .get_stat = get_stat_function, \ } static u64 efx_get_uint_stat(void *field) { return *(unsigned int *)field; } static u64 efx_get_ulong_stat(void *field) { return *(unsigned long *)field; } static u64 efx_get_u64_stat(void *field) { return *(u64 *) field; } static u64 efx_get_atomic_stat(void *field) { return atomic_read((atomic_t *) field); } #define EFX_ETHTOOL_ULONG_MAC_STAT(field) \ EFX_ETHTOOL_STAT(field, mac_stats, field, \ unsigned long, efx_get_ulong_stat) #define EFX_ETHTOOL_U64_MAC_STAT(field) \ EFX_ETHTOOL_STAT(field, mac_stats, field, \ u64, efx_get_u64_stat) #define EFX_ETHTOOL_UINT_NIC_STAT(name) \ EFX_ETHTOOL_STAT(name, nic, n_##name, \ unsigned int, efx_get_uint_stat) #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \ EFX_ETHTOOL_STAT(field, nic, field, \ atomic_t, efx_get_atomic_stat) #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \ EFX_ETHTOOL_STAT(field, channel, n_##field, \ unsigned int, efx_get_uint_stat) static struct efx_ethtool_stat efx_ethtool_stats[] = { EFX_ETHTOOL_U64_MAC_STAT(tx_bytes), EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes), EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes), EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets), EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad), EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause), EFX_ETHTOOL_ULONG_MAC_STAT(tx_control), EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast), EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast), EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast), EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64), EFX_ETHTOOL_ULONG_MAC_STAT(tx_64), EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127), EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255), EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511), EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023), EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx), EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo), EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo), EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision), EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision), EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision), EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision), EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred), EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision), EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred), EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp), EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error), EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error), EFX_ETHTOOL_U64_MAC_STAT(rx_bytes), EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes), EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes), EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets), EFX_ETHTOOL_ULONG_MAC_STAT(rx_good), EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad), EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause), EFX_ETHTOOL_ULONG_MAC_STAT(rx_control), EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast), EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast), EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast), EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64), EFX_ETHTOOL_ULONG_MAC_STAT(rx_64), EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127), EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255), EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511), EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023), EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx), EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo), EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo), EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64), EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx), EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo), EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo), EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow), EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed), EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier), EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error), EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error), EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error), EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error), EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt), EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset), EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc), EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err), EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err), EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc), }; /* Number of ethtool statistics */ #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats) #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB /************************************************************************** * * Ethtool operations * ************************************************************************** */ /* Identify device by flashing LEDs */ static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count) { struct efx_nic *efx = netdev_priv(net_dev); efx->board_info.blink(efx, 1); set_current_state(TASK_INTERRUPTIBLE); if (count) schedule_timeout(count * HZ); else schedule(); efx->board_info.blink(efx, 0); return 0; } /* This must be called with rtnl_lock held. */ int efx_ethtool_get_settings(struct net_device *net_dev, struct ethtool_cmd *ecmd) { struct efx_nic *efx = netdev_priv(net_dev); mutex_lock(&efx->mac_lock); efx->phy_op->get_settings(efx, ecmd); mutex_unlock(&efx->mac_lock); /* Falcon GMAC does not support 1000Mbps HD */ ecmd->supported &= ~SUPPORTED_1000baseT_Half; return 0; } /* This must be called with rtnl_lock held. */ int efx_ethtool_set_settings(struct net_device *net_dev, struct ethtool_cmd *ecmd) { struct efx_nic *efx = netdev_priv(net_dev); int rc; /* Falcon GMAC does not support 1000Mbps HD */ if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) { EFX_LOG(efx, "rejecting unsupported 1000Mbps HD" " setting\n"); return -EINVAL; } mutex_lock(&efx->mac_lock); rc = efx->phy_op->set_settings(efx, ecmd); mutex_unlock(&efx->mac_lock); if (!rc) efx_reconfigure_port(efx); return rc; } static void efx_ethtool_get_drvinfo(struct net_device *net_dev, struct ethtool_drvinfo *info) { struct efx_nic *efx = netdev_priv(net_dev); strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver)); strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version)); strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info)); } /** * efx_fill_test - fill in an individual self-test entry * @test_index: Index of the test * @strings: Ethtool strings, or %NULL * @data: Ethtool test results, or %NULL * @test: Pointer to test result (used only if data != %NULL) * @unit_format: Unit name format (e.g. "chan\%d") * @unit_id: Unit id (e.g. 0 for "chan0") * @test_format: Test name format (e.g. "loopback.\%s.tx.sent") * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent") * * Fill in an individual self-test entry. */ static void efx_fill_test(unsigned int test_index, struct ethtool_string *strings, u64 *data, int *test, const char *unit_format, int unit_id, const char *test_format, const char *test_id) { struct ethtool_string unit_str, test_str; /* Fill data value, if applicable */ if (data) data[test_index] = *test; /* Fill string, if applicable */ if (strings) { if (strchr(unit_format, '%')) snprintf(unit_str.name, sizeof(unit_str.name), unit_format, unit_id); else strcpy(unit_str.name, unit_format); snprintf(test_str.name, sizeof(test_str.name), test_format, test_id); snprintf(strings[test_index].name, sizeof(strings[test_index].name), "%-6s %-24s", unit_str.name, test_str.name); } } #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue #define EFX_LOOPBACK_NAME(_mode, _counter) \ "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode) /** * efx_fill_loopback_test - fill in a block of loopback self-test entries * @efx: Efx NIC * @lb_tests: Efx loopback self-test results structure * @mode: Loopback test mode * @test_index: Starting index of the test * @strings: Ethtool strings, or %NULL * @data: Ethtool test results, or %NULL */ static int efx_fill_loopback_test(struct efx_nic *efx, struct efx_loopback_self_tests *lb_tests, enum efx_loopback_mode mode, unsigned int test_index, struct ethtool_string *strings, u64 *data) { struct efx_tx_queue *tx_queue; efx_for_each_tx_queue(tx_queue, efx) { efx_fill_test(test_index++, strings, data, &lb_tests->tx_sent[tx_queue->queue], EFX_TX_QUEUE_NAME(tx_queue), EFX_LOOPBACK_NAME(mode, "tx_sent")); efx_fill_test(test_index++, strings, data, &lb_tests->tx_done[tx_queue->queue], EFX_TX_QUEUE_NAME(tx_queue), EFX_LOOPBACK_NAME(mode, "tx_done")); } efx_fill_test(test_index++, strings, data, &lb_tests->rx_good, "rx", 0, EFX_LOOPBACK_NAME(mode, "rx_good")); efx_fill_test(test_index++, strings, data, &lb_tests->rx_bad, "rx", 0, EFX_LOOPBACK_NAME(mode, "rx_bad")); return test_index; } /** * efx_ethtool_fill_self_tests - get self-test details * @efx: Efx NIC * @tests: Efx self-test results structure, or %NULL * @strings: Ethtool strings, or %NULL * @data: Ethtool test results, or %NULL */ static int efx_ethtool_fill_self_tests(struct efx_nic *efx, struct efx_self_tests *tests, struct ethtool_string *strings, u64 *data) { struct efx_channel *channel; unsigned int n = 0, i; enum efx_loopback_mode mode; efx_fill_test(n++, strings, data, &tests->mii, "core", 0, "mii", NULL); efx_fill_test(n++, strings, data, &tests->nvram, "core", 0, "nvram", NULL); efx_fill_test(n++, strings, data, &tests->interrupt, "core", 0, "interrupt", NULL); /* Event queues */ efx_for_each_channel(channel, efx) { efx_fill_test(n++, strings, data, &tests->eventq_dma[channel->channel], EFX_CHANNEL_NAME(channel), "eventq.dma", NULL); efx_fill_test(n++, strings, data, &tests->eventq_int[channel->channel], EFX_CHANNEL_NAME(channel), "eventq.int", NULL); efx_fill_test(n++, strings, data, &tests->eventq_poll[channel->channel], EFX_CHANNEL_NAME(channel), "eventq.poll", NULL); } efx_fill_test(n++, strings, data, &tests->registers, "core", 0, "registers", NULL); for (i = 0; i < efx->phy_op->num_tests; i++) efx_fill_test(n++, strings, data, &tests->phy[i], "phy", 0, efx->phy_op->test_names[i], NULL); /* Loopback tests */ for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) { if (!(efx->loopback_modes & (1 << mode))) continue; n = efx_fill_loopback_test(efx, &tests->loopback[mode], mode, n, strings, data); } return n; } static int efx_ethtool_get_sset_count(struct net_device *net_dev, int string_set) { switch (string_set) { case ETH_SS_STATS: return EFX_ETHTOOL_NUM_STATS; case ETH_SS_TEST: return efx_ethtool_fill_self_tests(netdev_priv(net_dev), NULL, NULL, NULL); default: return -EINVAL; } } static void efx_ethtool_get_strings(struct net_device *net_dev, u32 string_set, u8 *strings) { struct efx_nic *efx = netdev_priv(net_dev); struct ethtool_string *ethtool_strings = (struct ethtool_string *)strings; int i; switch (string_set) { case ETH_SS_STATS: for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) strncpy(ethtool_strings[i].name, efx_ethtool_stats[i].name, sizeof(ethtool_strings[i].name)); break; case ETH_SS_TEST: efx_ethtool_fill_self_tests(efx, NULL, ethtool_strings, NULL); break; default: /* No other string sets */ break; } } static void efx_ethtool_get_stats(struct net_device *net_dev, struct ethtool_stats *stats, u64 *data) { struct efx_nic *efx = netdev_priv(net_dev); struct efx_mac_stats *mac_stats = &efx->mac_stats; struct efx_ethtool_stat *stat; struct efx_channel *channel; int i; EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS); /* Update MAC and NIC statistics */ dev_get_stats(net_dev); /* Fill detailed statistics buffer */ for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) { stat = &efx_ethtool_stats[i]; switch (stat->source) { case EFX_ETHTOOL_STAT_SOURCE_mac_stats: data[i] = stat->get_stat((void *)mac_stats + stat->offset); break; case EFX_ETHTOOL_STAT_SOURCE_nic: data[i] = stat->get_stat((void *)efx + stat->offset); break; case EFX_ETHTOOL_STAT_SOURCE_channel: data[i] = 0; efx_for_each_channel(channel, efx) data[i] += stat->get_stat((void *)channel + stat->offset); break; } } } static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable) { struct efx_nic *efx = netdev_priv(net_dev); /* No way to stop the hardware doing the checks; we just * ignore the result. */ efx->rx_checksum_enabled = !!enable; return 0; } static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev) { struct efx_nic *efx = netdev_priv(net_dev); return efx->rx_checksum_enabled; } static void efx_ethtool_self_test(struct net_device *net_dev, struct ethtool_test *test, u64 *data) { struct efx_nic *efx = netdev_priv(net_dev); struct efx_self_tests efx_tests; int already_up; int rc; ASSERT_RTNL(); if (efx->state != STATE_RUNNING) { rc = -EIO; goto fail1; } /* We need rx buffers and interrupts. */ already_up = (efx->net_dev->flags & IFF_UP); if (!already_up) { rc = dev_open(efx->net_dev); if (rc) { EFX_ERR(efx, "failed opening device.\n"); goto fail2; } } memset(&efx_tests, 0, sizeof(efx_tests)); rc = efx_selftest(efx, &efx_tests, test->flags); if (!already_up) dev_close(efx->net_dev); EFX_LOG(efx, "%s %sline self-tests\n", rc == 0 ? "passed" : "failed", (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on"); fail2: fail1: /* Fill ethtool results structures */ efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data); if (rc) test->flags |= ETH_TEST_FL_FAILED; } /* Restart autonegotiation */ static int efx_ethtool_nway_reset(struct net_device *net_dev) { struct efx_nic *efx = netdev_priv(net_dev); return mii_nway_restart(&efx->mii); } static u32 efx_ethtool_get_link(struct net_device *net_dev) { struct efx_nic *efx = netdev_priv(net_dev); return efx->link_up; } static int efx_ethtool_get_eeprom_len(struct net_device *net_dev) { struct efx_nic *efx = netdev_priv(net_dev); struct efx_spi_device *spi = efx->spi_eeprom; if (!spi) return 0; return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) - min(spi->size, EFX_EEPROM_BOOTCONFIG_START); } static int efx_ethtool_get_eeprom(struct net_device *net_dev, struct ethtool_eeprom *eeprom, u8 *buf) { struct efx_nic *efx = netdev_priv(net_dev); struct efx_spi_device *spi = efx->spi_eeprom; size_t len; int rc; rc = mutex_lock_interruptible(&efx->spi_lock); if (rc) return rc; rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START, eeprom->len, &len, buf); mutex_unlock(&efx->spi_lock); eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC; eeprom->len = len; return rc; } static int efx_ethtool_set_eeprom(struct net_device *net_dev, struct ethtool_eeprom *eeprom, u8 *buf) { struct efx_nic *efx = netdev_priv(net_dev); struct efx_spi_device *spi = efx->spi_eeprom; size_t len; int rc; if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC) return -EINVAL; rc = mutex_lock_interruptible(&efx->spi_lock); if (rc) return rc; rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START, eeprom->len, &len, buf); mutex_unlock(&efx->spi_lock); eeprom->len = len; return rc; } static int efx_ethtool_get_coalesce(struct net_device *net_dev, struct ethtool_coalesce *coalesce) { struct efx_nic *efx = netdev_priv(net_dev); struct efx_tx_queue *tx_queue; struct efx_rx_queue *rx_queue; struct efx_channel *channel; memset(coalesce, 0, sizeof(*coalesce)); /* Find lowest IRQ moderation across all used TX queues */ coalesce->tx_coalesce_usecs_irq = ~((u32) 0); efx_for_each_tx_queue(tx_queue, efx) { channel = tx_queue->channel; if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) { if (channel->used_flags != EFX_USED_BY_RX_TX) coalesce->tx_coalesce_usecs_irq = channel->irq_moderation; else coalesce->tx_coalesce_usecs_irq = 0; } } /* Find lowest IRQ moderation across all used RX queues */ coalesce->rx_coalesce_usecs_irq = ~((u32) 0); efx_for_each_rx_queue(rx_queue, efx) { channel = rx_queue->channel; if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq) coalesce->rx_coalesce_usecs_irq = channel->irq_moderation; } return 0; } /* Set coalescing parameters * The difficulties occur for shared channels */ static int efx_ethtool_set_coalesce(struct net_device *net_dev, struct ethtool_coalesce *coalesce) { struct efx_nic *efx = netdev_priv(net_dev); struct efx_channel *channel; struct efx_tx_queue *tx_queue; unsigned tx_usecs, rx_usecs; if (coalesce->use_adaptive_rx_coalesce || coalesce->use_adaptive_tx_coalesce) return -EOPNOTSUPP; if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) { EFX_ERR(efx, "invalid coalescing setting. " "Only rx/tx_coalesce_usecs_irq are supported\n"); return -EOPNOTSUPP; } rx_usecs = coalesce->rx_coalesce_usecs_irq; tx_usecs = coalesce->tx_coalesce_usecs_irq; /* If the channel is shared only allow RX parameters to be set */ efx_for_each_tx_queue(tx_queue, efx) { if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) && tx_usecs) { EFX_ERR(efx, "Channel is shared. " "Only RX coalescing may be set\n"); return -EOPNOTSUPP; } } efx_init_irq_moderation(efx, tx_usecs, rx_usecs); /* Reset channel to pick up new moderation value. Note that * this may change the value of the irq_moderation field * (e.g. to allow for hardware timer granularity). */ efx_for_each_channel(channel, efx) falcon_set_int_moderation(channel); return 0; } static int efx_ethtool_set_pauseparam(struct net_device *net_dev, struct ethtool_pauseparam *pause) { struct efx_nic *efx = netdev_priv(net_dev); enum efx_fc_type wanted_fc; bool reset; wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) | (pause->tx_pause ? EFX_FC_TX : 0) | (pause->autoneg ? EFX_FC_AUTO : 0)); if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) { EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n"); return -EINVAL; } if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) && (wanted_fc & EFX_FC_AUTO)) { EFX_LOG(efx, "PHY does not support flow control " "autonegotiation\n"); return -EINVAL; } /* TX flow control may automatically turn itself off if the * link partner (intermittently) stops responding to pause * frames. There isn't any indication that this has happened, * so the best we do is leave it up to the user to spot this * and fix it be cycling transmit flow control on this end. */ reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX); if (EFX_WORKAROUND_11482(efx) && reset) { if (falcon_rev(efx) >= FALCON_REV_B0) { /* Recover by resetting the EM block */ if (efx->link_up) falcon_drain_tx_fifo(efx); } else { /* Schedule a reset to recover */ efx_schedule_reset(efx, RESET_TYPE_INVISIBLE); } } /* Try to push the pause parameters */ mutex_lock(&efx->mac_lock); efx->wanted_fc = wanted_fc; mdio_clause45_set_pause(efx); __efx_reconfigure_port(efx); mutex_unlock(&efx->mac_lock); return 0; } static void efx_ethtool_get_pauseparam(struct net_device *net_dev, struct ethtool_pauseparam *pause) { struct efx_nic *efx = netdev_priv(net_dev); pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX); pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX); pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO); } struct ethtool_ops efx_ethtool_ops = { .get_settings = efx_ethtool_get_settings, .set_settings = efx_ethtool_set_settings, .get_drvinfo = efx_ethtool_get_drvinfo, .nway_reset = efx_ethtool_nway_reset, .get_link = efx_ethtool_get_link, .get_eeprom_len = efx_ethtool_get_eeprom_len, .get_eeprom = efx_ethtool_get_eeprom, .set_eeprom = efx_ethtool_set_eeprom, .get_coalesce = efx_ethtool_get_coalesce, .set_coalesce = efx_ethtool_set_coalesce, .get_pauseparam = efx_ethtool_get_pauseparam, .set_pauseparam = efx_ethtool_set_pauseparam, .get_rx_csum = efx_ethtool_get_rx_csum, .set_rx_csum = efx_ethtool_set_rx_csum, .get_tx_csum = ethtool_op_get_tx_csum, .set_tx_csum = ethtool_op_set_tx_csum, .get_sg = ethtool_op_get_sg, .set_sg = ethtool_op_set_sg, .get_tso = ethtool_op_get_tso, .set_tso = ethtool_op_set_tso, .get_flags = ethtool_op_get_flags, .set_flags = ethtool_op_set_flags, .get_sset_count = efx_ethtool_get_sset_count, .self_test = efx_ethtool_self_test, .get_strings = efx_ethtool_get_strings, .phys_id = efx_ethtool_phys_id, .get_ethtool_stats = efx_ethtool_get_stats, };