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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /drivers/net/ethernet/amazon/ena/ena_ethtool.c | |
parent | Initial commit. (diff) | |
download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/amazon/ena/ena_ethtool.c')
-rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_ethtool.c | 933 |
1 files changed, 933 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c new file mode 100644 index 000000000..66f992510 --- /dev/null +++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c @@ -0,0 +1,933 @@ +/* + * Copyright 2015 Amazon.com, Inc. or its affiliates. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/pci.h> + +#include "ena_netdev.h" + +struct ena_stats { + char name[ETH_GSTRING_LEN]; + int stat_offset; +}; + +#define ENA_STAT_ENA_COM_ENTRY(stat) { \ + .name = #stat, \ + .stat_offset = offsetof(struct ena_com_stats_admin, stat) \ +} + +#define ENA_STAT_ENTRY(stat, stat_type) { \ + .name = #stat, \ + .stat_offset = offsetof(struct ena_stats_##stat_type, stat) \ +} + +#define ENA_STAT_RX_ENTRY(stat) \ + ENA_STAT_ENTRY(stat, rx) + +#define ENA_STAT_TX_ENTRY(stat) \ + ENA_STAT_ENTRY(stat, tx) + +#define ENA_STAT_GLOBAL_ENTRY(stat) \ + ENA_STAT_ENTRY(stat, dev) + +static const struct ena_stats ena_stats_global_strings[] = { + ENA_STAT_GLOBAL_ENTRY(tx_timeout), + ENA_STAT_GLOBAL_ENTRY(suspend), + ENA_STAT_GLOBAL_ENTRY(resume), + ENA_STAT_GLOBAL_ENTRY(wd_expired), + ENA_STAT_GLOBAL_ENTRY(interface_up), + ENA_STAT_GLOBAL_ENTRY(interface_down), + ENA_STAT_GLOBAL_ENTRY(admin_q_pause), +}; + +static const struct ena_stats ena_stats_tx_strings[] = { + ENA_STAT_TX_ENTRY(cnt), + ENA_STAT_TX_ENTRY(bytes), + ENA_STAT_TX_ENTRY(queue_stop), + ENA_STAT_TX_ENTRY(queue_wakeup), + ENA_STAT_TX_ENTRY(dma_mapping_err), + ENA_STAT_TX_ENTRY(linearize), + ENA_STAT_TX_ENTRY(linearize_failed), + ENA_STAT_TX_ENTRY(napi_comp), + ENA_STAT_TX_ENTRY(tx_poll), + ENA_STAT_TX_ENTRY(doorbells), + ENA_STAT_TX_ENTRY(prepare_ctx_err), + ENA_STAT_TX_ENTRY(bad_req_id), + ENA_STAT_TX_ENTRY(missed_tx), +}; + +static const struct ena_stats ena_stats_rx_strings[] = { + ENA_STAT_RX_ENTRY(cnt), + ENA_STAT_RX_ENTRY(bytes), + ENA_STAT_RX_ENTRY(refil_partial), + ENA_STAT_RX_ENTRY(bad_csum), + ENA_STAT_RX_ENTRY(page_alloc_fail), + ENA_STAT_RX_ENTRY(skb_alloc_fail), + ENA_STAT_RX_ENTRY(dma_mapping_err), + ENA_STAT_RX_ENTRY(bad_desc_num), + ENA_STAT_RX_ENTRY(rx_copybreak_pkt), + ENA_STAT_RX_ENTRY(bad_req_id), + ENA_STAT_RX_ENTRY(empty_rx_ring), +}; + +static const struct ena_stats ena_stats_ena_com_strings[] = { + ENA_STAT_ENA_COM_ENTRY(aborted_cmd), + ENA_STAT_ENA_COM_ENTRY(submitted_cmd), + ENA_STAT_ENA_COM_ENTRY(completed_cmd), + ENA_STAT_ENA_COM_ENTRY(out_of_space), + ENA_STAT_ENA_COM_ENTRY(no_completion), +}; + +#define ENA_STATS_ARRAY_GLOBAL ARRAY_SIZE(ena_stats_global_strings) +#define ENA_STATS_ARRAY_TX ARRAY_SIZE(ena_stats_tx_strings) +#define ENA_STATS_ARRAY_RX ARRAY_SIZE(ena_stats_rx_strings) +#define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings) + +static void ena_safe_update_stat(u64 *src, u64 *dst, + struct u64_stats_sync *syncp) +{ + unsigned int start; + + do { + start = u64_stats_fetch_begin_irq(syncp); + *(dst) = *src; + } while (u64_stats_fetch_retry_irq(syncp, start)); +} + +static void ena_queue_stats(struct ena_adapter *adapter, u64 **data) +{ + const struct ena_stats *ena_stats; + struct ena_ring *ring; + + u64 *ptr; + int i, j; + + for (i = 0; i < adapter->num_queues; i++) { + /* Tx stats */ + ring = &adapter->tx_ring[i]; + + for (j = 0; j < ENA_STATS_ARRAY_TX; j++) { + ena_stats = &ena_stats_tx_strings[j]; + + ptr = (u64 *)((uintptr_t)&ring->tx_stats + + (uintptr_t)ena_stats->stat_offset); + + ena_safe_update_stat(ptr, (*data)++, &ring->syncp); + } + + /* Rx stats */ + ring = &adapter->rx_ring[i]; + + for (j = 0; j < ENA_STATS_ARRAY_RX; j++) { + ena_stats = &ena_stats_rx_strings[j]; + + ptr = (u64 *)((uintptr_t)&ring->rx_stats + + (uintptr_t)ena_stats->stat_offset); + + ena_safe_update_stat(ptr, (*data)++, &ring->syncp); + } + } +} + +static void ena_dev_admin_queue_stats(struct ena_adapter *adapter, u64 **data) +{ + const struct ena_stats *ena_stats; + u32 *ptr; + int i; + + for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) { + ena_stats = &ena_stats_ena_com_strings[i]; + + ptr = (u32 *)((uintptr_t)&adapter->ena_dev->admin_queue.stats + + (uintptr_t)ena_stats->stat_offset); + + *(*data)++ = *ptr; + } +} + +static void ena_get_ethtool_stats(struct net_device *netdev, + struct ethtool_stats *stats, + u64 *data) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + const struct ena_stats *ena_stats; + u64 *ptr; + int i; + + for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) { + ena_stats = &ena_stats_global_strings[i]; + + ptr = (u64 *)((uintptr_t)&adapter->dev_stats + + (uintptr_t)ena_stats->stat_offset); + + ena_safe_update_stat(ptr, data++, &adapter->syncp); + } + + ena_queue_stats(adapter, &data); + ena_dev_admin_queue_stats(adapter, &data); +} + +int ena_get_sset_count(struct net_device *netdev, int sset) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + + if (sset != ETH_SS_STATS) + return -EOPNOTSUPP; + + return adapter->num_queues * (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX) + + ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM; +} + +static void ena_queue_strings(struct ena_adapter *adapter, u8 **data) +{ + const struct ena_stats *ena_stats; + int i, j; + + for (i = 0; i < adapter->num_queues; i++) { + /* Tx stats */ + for (j = 0; j < ENA_STATS_ARRAY_TX; j++) { + ena_stats = &ena_stats_tx_strings[j]; + + snprintf(*data, ETH_GSTRING_LEN, + "queue_%u_tx_%s", i, ena_stats->name); + (*data) += ETH_GSTRING_LEN; + } + /* Rx stats */ + for (j = 0; j < ENA_STATS_ARRAY_RX; j++) { + ena_stats = &ena_stats_rx_strings[j]; + + snprintf(*data, ETH_GSTRING_LEN, + "queue_%u_rx_%s", i, ena_stats->name); + (*data) += ETH_GSTRING_LEN; + } + } +} + +static void ena_com_dev_strings(u8 **data) +{ + const struct ena_stats *ena_stats; + int i; + + for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) { + ena_stats = &ena_stats_ena_com_strings[i]; + + snprintf(*data, ETH_GSTRING_LEN, + "ena_admin_q_%s", ena_stats->name); + (*data) += ETH_GSTRING_LEN; + } +} + +static void ena_get_strings(struct net_device *netdev, u32 sset, u8 *data) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + const struct ena_stats *ena_stats; + int i; + + if (sset != ETH_SS_STATS) + return; + + for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) { + ena_stats = &ena_stats_global_strings[i]; + + memcpy(data, ena_stats->name, ETH_GSTRING_LEN); + data += ETH_GSTRING_LEN; + } + + ena_queue_strings(adapter, &data); + ena_com_dev_strings(&data); +} + +static int ena_get_link_ksettings(struct net_device *netdev, + struct ethtool_link_ksettings *link_ksettings) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + struct ena_com_dev *ena_dev = adapter->ena_dev; + struct ena_admin_get_feature_link_desc *link; + struct ena_admin_get_feat_resp feat_resp; + int rc; + + rc = ena_com_get_link_params(ena_dev, &feat_resp); + if (rc) + return rc; + + link = &feat_resp.u.link; + link_ksettings->base.speed = link->speed; + + if (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) { + ethtool_link_ksettings_add_link_mode(link_ksettings, + supported, Autoneg); + ethtool_link_ksettings_add_link_mode(link_ksettings, + supported, Autoneg); + } + + link_ksettings->base.autoneg = + (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) ? + AUTONEG_ENABLE : AUTONEG_DISABLE; + + link_ksettings->base.duplex = DUPLEX_FULL; + + return 0; +} + +static int ena_get_coalesce(struct net_device *net_dev, + struct ethtool_coalesce *coalesce) +{ + struct ena_adapter *adapter = netdev_priv(net_dev); + struct ena_com_dev *ena_dev = adapter->ena_dev; + struct ena_intr_moder_entry intr_moder_entry; + + if (!ena_com_interrupt_moderation_supported(ena_dev)) { + /* the devie doesn't support interrupt moderation */ + return -EOPNOTSUPP; + } + coalesce->tx_coalesce_usecs = + ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) / + ena_dev->intr_delay_resolution; + if (!ena_com_get_adaptive_moderation_enabled(ena_dev)) { + coalesce->rx_coalesce_usecs = + ena_com_get_nonadaptive_moderation_interval_rx(ena_dev) + / ena_dev->intr_delay_resolution; + } else { + ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_LOWEST, &intr_moder_entry); + coalesce->rx_coalesce_usecs_low = intr_moder_entry.intr_moder_interval; + coalesce->rx_max_coalesced_frames_low = intr_moder_entry.pkts_per_interval; + + ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_MID, &intr_moder_entry); + coalesce->rx_coalesce_usecs = intr_moder_entry.intr_moder_interval; + coalesce->rx_max_coalesced_frames = intr_moder_entry.pkts_per_interval; + + ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_HIGHEST, &intr_moder_entry); + coalesce->rx_coalesce_usecs_high = intr_moder_entry.intr_moder_interval; + coalesce->rx_max_coalesced_frames_high = intr_moder_entry.pkts_per_interval; + } + coalesce->use_adaptive_rx_coalesce = + ena_com_get_adaptive_moderation_enabled(ena_dev); + + return 0; +} + +static void ena_update_tx_rings_intr_moderation(struct ena_adapter *adapter) +{ + unsigned int val; + int i; + + val = ena_com_get_nonadaptive_moderation_interval_tx(adapter->ena_dev); + + for (i = 0; i < adapter->num_queues; i++) + adapter->tx_ring[i].smoothed_interval = val; +} + +static int ena_set_coalesce(struct net_device *net_dev, + struct ethtool_coalesce *coalesce) +{ + struct ena_adapter *adapter = netdev_priv(net_dev); + struct ena_com_dev *ena_dev = adapter->ena_dev; + struct ena_intr_moder_entry intr_moder_entry; + int rc; + + if (!ena_com_interrupt_moderation_supported(ena_dev)) { + /* the devie doesn't support interrupt moderation */ + return -EOPNOTSUPP; + } + + if (coalesce->rx_coalesce_usecs_irq || + coalesce->rx_max_coalesced_frames_irq || + coalesce->tx_coalesce_usecs_irq || + coalesce->tx_max_coalesced_frames || + coalesce->tx_max_coalesced_frames_irq || + coalesce->stats_block_coalesce_usecs || + coalesce->use_adaptive_tx_coalesce || + coalesce->pkt_rate_low || + coalesce->tx_coalesce_usecs_low || + coalesce->tx_max_coalesced_frames_low || + coalesce->pkt_rate_high || + coalesce->tx_coalesce_usecs_high || + coalesce->tx_max_coalesced_frames_high || + coalesce->rate_sample_interval) + return -EINVAL; + + rc = ena_com_update_nonadaptive_moderation_interval_tx(ena_dev, + coalesce->tx_coalesce_usecs); + if (rc) + return rc; + + ena_update_tx_rings_intr_moderation(adapter); + + if (ena_com_get_adaptive_moderation_enabled(ena_dev)) { + if (!coalesce->use_adaptive_rx_coalesce) { + ena_com_disable_adaptive_moderation(ena_dev); + rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev, + coalesce->rx_coalesce_usecs); + return rc; + } + } else { /* was in non-adaptive mode */ + if (coalesce->use_adaptive_rx_coalesce) { + ena_com_enable_adaptive_moderation(ena_dev); + } else { + rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev, + coalesce->rx_coalesce_usecs); + return rc; + } + } + + intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs_low; + intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames_low; + intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED; + ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_LOWEST, &intr_moder_entry); + + intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs; + intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames; + intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED; + ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_MID, &intr_moder_entry); + + intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs_high; + intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames_high; + intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED; + ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_HIGHEST, &intr_moder_entry); + + return 0; +} + +static u32 ena_get_msglevel(struct net_device *netdev) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + + return adapter->msg_enable; +} + +static void ena_set_msglevel(struct net_device *netdev, u32 value) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + + adapter->msg_enable = value; +} + +static void ena_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + struct ena_adapter *adapter = netdev_priv(dev); + + strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver)); + strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version)); + strlcpy(info->bus_info, pci_name(adapter->pdev), + sizeof(info->bus_info)); +} + +static void ena_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + struct ena_ring *tx_ring = &adapter->tx_ring[0]; + struct ena_ring *rx_ring = &adapter->rx_ring[0]; + + ring->rx_max_pending = rx_ring->ring_size; + ring->tx_max_pending = tx_ring->ring_size; + ring->rx_pending = rx_ring->ring_size; + ring->tx_pending = tx_ring->ring_size; +} + +static u32 ena_flow_hash_to_flow_type(u16 hash_fields) +{ + u32 data = 0; + + if (hash_fields & ENA_ADMIN_RSS_L2_DA) + data |= RXH_L2DA; + + if (hash_fields & ENA_ADMIN_RSS_L3_DA) + data |= RXH_IP_DST; + + if (hash_fields & ENA_ADMIN_RSS_L3_SA) + data |= RXH_IP_SRC; + + if (hash_fields & ENA_ADMIN_RSS_L4_DP) + data |= RXH_L4_B_2_3; + + if (hash_fields & ENA_ADMIN_RSS_L4_SP) + data |= RXH_L4_B_0_1; + + return data; +} + +static u16 ena_flow_data_to_flow_hash(u32 hash_fields) +{ + u16 data = 0; + + if (hash_fields & RXH_L2DA) + data |= ENA_ADMIN_RSS_L2_DA; + + if (hash_fields & RXH_IP_DST) + data |= ENA_ADMIN_RSS_L3_DA; + + if (hash_fields & RXH_IP_SRC) + data |= ENA_ADMIN_RSS_L3_SA; + + if (hash_fields & RXH_L4_B_2_3) + data |= ENA_ADMIN_RSS_L4_DP; + + if (hash_fields & RXH_L4_B_0_1) + data |= ENA_ADMIN_RSS_L4_SP; + + return data; +} + +static int ena_get_rss_hash(struct ena_com_dev *ena_dev, + struct ethtool_rxnfc *cmd) +{ + enum ena_admin_flow_hash_proto proto; + u16 hash_fields; + int rc; + + cmd->data = 0; + + switch (cmd->flow_type) { + case TCP_V4_FLOW: + proto = ENA_ADMIN_RSS_TCP4; + break; + case UDP_V4_FLOW: + proto = ENA_ADMIN_RSS_UDP4; + break; + case TCP_V6_FLOW: + proto = ENA_ADMIN_RSS_TCP6; + break; + case UDP_V6_FLOW: + proto = ENA_ADMIN_RSS_UDP6; + break; + case IPV4_FLOW: + proto = ENA_ADMIN_RSS_IP4; + break; + case IPV6_FLOW: + proto = ENA_ADMIN_RSS_IP6; + break; + case ETHER_FLOW: + proto = ENA_ADMIN_RSS_NOT_IP; + break; + case AH_V4_FLOW: + case ESP_V4_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + case SCTP_V4_FLOW: + case AH_ESP_V4_FLOW: + return -EOPNOTSUPP; + default: + return -EINVAL; + } + + rc = ena_com_get_hash_ctrl(ena_dev, proto, &hash_fields); + if (rc) + return rc; + + cmd->data = ena_flow_hash_to_flow_type(hash_fields); + + return 0; +} + +static int ena_set_rss_hash(struct ena_com_dev *ena_dev, + struct ethtool_rxnfc *cmd) +{ + enum ena_admin_flow_hash_proto proto; + u16 hash_fields; + + switch (cmd->flow_type) { + case TCP_V4_FLOW: + proto = ENA_ADMIN_RSS_TCP4; + break; + case UDP_V4_FLOW: + proto = ENA_ADMIN_RSS_UDP4; + break; + case TCP_V6_FLOW: + proto = ENA_ADMIN_RSS_TCP6; + break; + case UDP_V6_FLOW: + proto = ENA_ADMIN_RSS_UDP6; + break; + case IPV4_FLOW: + proto = ENA_ADMIN_RSS_IP4; + break; + case IPV6_FLOW: + proto = ENA_ADMIN_RSS_IP6; + break; + case ETHER_FLOW: + proto = ENA_ADMIN_RSS_NOT_IP; + break; + case AH_V4_FLOW: + case ESP_V4_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + case SCTP_V4_FLOW: + case AH_ESP_V4_FLOW: + return -EOPNOTSUPP; + default: + return -EINVAL; + } + + hash_fields = ena_flow_data_to_flow_hash(cmd->data); + + return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields); +} + +static int ena_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + int rc = 0; + + switch (info->cmd) { + case ETHTOOL_SRXFH: + rc = ena_set_rss_hash(adapter->ena_dev, info); + break; + case ETHTOOL_SRXCLSRLDEL: + case ETHTOOL_SRXCLSRLINS: + default: + netif_err(adapter, drv, netdev, + "Command parameter %d is not supported\n", info->cmd); + rc = -EOPNOTSUPP; + } + + return rc; +} + +static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info, + u32 *rules) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + int rc = 0; + + switch (info->cmd) { + case ETHTOOL_GRXRINGS: + info->data = adapter->num_queues; + rc = 0; + break; + case ETHTOOL_GRXFH: + rc = ena_get_rss_hash(adapter->ena_dev, info); + break; + case ETHTOOL_GRXCLSRLCNT: + case ETHTOOL_GRXCLSRULE: + case ETHTOOL_GRXCLSRLALL: + default: + netif_err(adapter, drv, netdev, + "Command parameter %d is not supported\n", info->cmd); + rc = -EOPNOTSUPP; + } + + return rc; +} + +static u32 ena_get_rxfh_indir_size(struct net_device *netdev) +{ + return ENA_RX_RSS_TABLE_SIZE; +} + +static u32 ena_get_rxfh_key_size(struct net_device *netdev) +{ + return ENA_HASH_KEY_SIZE; +} + +static int ena_indirection_table_get(struct ena_adapter *adapter, u32 *indir) +{ + struct ena_com_dev *ena_dev = adapter->ena_dev; + int i, rc; + + if (!indir) + return 0; + + rc = ena_com_indirect_table_get(ena_dev, indir); + if (rc) + return rc; + + /* Our internal representation of the indices is: even indices + * for Tx and uneven indices for Rx. We need to convert the Rx + * indices to be consecutive + */ + for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) + indir[i] = ENA_IO_RXQ_IDX_TO_COMBINED_IDX(indir[i]); + + return rc; +} + +static int ena_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, + u8 *hfunc) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + enum ena_admin_hash_functions ena_func; + u8 func; + int rc; + + rc = ena_indirection_table_get(adapter, indir); + if (rc) + return rc; + + /* We call this function in order to check if the device + * supports getting/setting the hash function. + */ + rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func, key); + + if (rc) { + if (rc == -EOPNOTSUPP) { + key = NULL; + hfunc = NULL; + rc = 0; + } + + return rc; + } + + if (rc) + return rc; + + switch (ena_func) { + case ENA_ADMIN_TOEPLITZ: + func = ETH_RSS_HASH_TOP; + break; + case ENA_ADMIN_CRC32: + func = ETH_RSS_HASH_CRC32; + break; + default: + netif_err(adapter, drv, netdev, + "Command parameter is not supported\n"); + return -EOPNOTSUPP; + } + + if (hfunc) + *hfunc = func; + + return rc; +} + +static int ena_set_rxfh(struct net_device *netdev, const u32 *indir, + const u8 *key, const u8 hfunc) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + struct ena_com_dev *ena_dev = adapter->ena_dev; + enum ena_admin_hash_functions func; + int rc, i; + + if (indir) { + for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) { + rc = ena_com_indirect_table_fill_entry(ena_dev, + i, + ENA_IO_RXQ_IDX(indir[i])); + if (unlikely(rc)) { + netif_err(adapter, drv, netdev, + "Cannot fill indirect table (index is too large)\n"); + return rc; + } + } + + rc = ena_com_indirect_table_set(ena_dev); + if (rc) { + netif_err(adapter, drv, netdev, + "Cannot set indirect table\n"); + return rc == -EPERM ? -EOPNOTSUPP : rc; + } + } + + switch (hfunc) { + case ETH_RSS_HASH_NO_CHANGE: + func = ena_com_get_current_hash_function(ena_dev); + break; + case ETH_RSS_HASH_TOP: + func = ENA_ADMIN_TOEPLITZ; + break; + case ETH_RSS_HASH_CRC32: + func = ENA_ADMIN_CRC32; + break; + default: + netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n", + hfunc); + return -EOPNOTSUPP; + } + + if (key) { + rc = ena_com_fill_hash_function(ena_dev, func, key, + ENA_HASH_KEY_SIZE, + 0xFFFFFFFF); + if (unlikely(rc)) { + netif_err(adapter, drv, netdev, "Cannot fill key\n"); + return rc == -EPERM ? -EOPNOTSUPP : rc; + } + } + + return 0; +} + +static void ena_get_channels(struct net_device *netdev, + struct ethtool_channels *channels) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + + channels->max_rx = adapter->num_queues; + channels->max_tx = adapter->num_queues; + channels->max_other = 0; + channels->max_combined = 0; + channels->rx_count = adapter->num_queues; + channels->tx_count = adapter->num_queues; + channels->other_count = 0; + channels->combined_count = 0; +} + +static int ena_get_tunable(struct net_device *netdev, + const struct ethtool_tunable *tuna, void *data) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + int ret = 0; + + switch (tuna->id) { + case ETHTOOL_RX_COPYBREAK: + *(u32 *)data = adapter->rx_copybreak; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int ena_set_tunable(struct net_device *netdev, + const struct ethtool_tunable *tuna, + const void *data) +{ + struct ena_adapter *adapter = netdev_priv(netdev); + int ret = 0; + u32 len; + + switch (tuna->id) { + case ETHTOOL_RX_COPYBREAK: + len = *(u32 *)data; + if (len > adapter->netdev->mtu) { + ret = -EINVAL; + break; + } + adapter->rx_copybreak = len; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static const struct ethtool_ops ena_ethtool_ops = { + .get_link_ksettings = ena_get_link_ksettings, + .get_drvinfo = ena_get_drvinfo, + .get_msglevel = ena_get_msglevel, + .set_msglevel = ena_set_msglevel, + .get_link = ethtool_op_get_link, + .get_coalesce = ena_get_coalesce, + .set_coalesce = ena_set_coalesce, + .get_ringparam = ena_get_ringparam, + .get_sset_count = ena_get_sset_count, + .get_strings = ena_get_strings, + .get_ethtool_stats = ena_get_ethtool_stats, + .get_rxnfc = ena_get_rxnfc, + .set_rxnfc = ena_set_rxnfc, + .get_rxfh_indir_size = ena_get_rxfh_indir_size, + .get_rxfh_key_size = ena_get_rxfh_key_size, + .get_rxfh = ena_get_rxfh, + .set_rxfh = ena_set_rxfh, + .get_channels = ena_get_channels, + .get_tunable = ena_get_tunable, + .set_tunable = ena_set_tunable, + .get_ts_info = ethtool_op_get_ts_info, +}; + +void ena_set_ethtool_ops(struct net_device *netdev) +{ + netdev->ethtool_ops = &ena_ethtool_ops; +} + +static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf) +{ + struct net_device *netdev = adapter->netdev; + u8 *strings_buf; + u64 *data_buf; + int strings_num; + int i, rc; + + strings_num = ena_get_sset_count(netdev, ETH_SS_STATS); + if (strings_num <= 0) { + netif_err(adapter, drv, netdev, "Can't get stats num\n"); + return; + } + + strings_buf = devm_kcalloc(&adapter->pdev->dev, + ETH_GSTRING_LEN, strings_num, + GFP_ATOMIC); + if (!strings_buf) { + netif_err(adapter, drv, netdev, + "failed to alloc strings_buf\n"); + return; + } + + data_buf = devm_kcalloc(&adapter->pdev->dev, + strings_num, sizeof(u64), + GFP_ATOMIC); + if (!data_buf) { + netif_err(adapter, drv, netdev, + "failed to allocate data buf\n"); + devm_kfree(&adapter->pdev->dev, strings_buf); + return; + } + + ena_get_strings(netdev, ETH_SS_STATS, strings_buf); + ena_get_ethtool_stats(netdev, NULL, data_buf); + + /* If there is a buffer, dump stats, otherwise print them to dmesg */ + if (buf) + for (i = 0; i < strings_num; i++) { + rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64), + "%s %llu\n", + strings_buf + i * ETH_GSTRING_LEN, + data_buf[i]); + buf += rc; + } + else + for (i = 0; i < strings_num; i++) + netif_err(adapter, drv, netdev, "%s: %llu\n", + strings_buf + i * ETH_GSTRING_LEN, + data_buf[i]); + + devm_kfree(&adapter->pdev->dev, strings_buf); + devm_kfree(&adapter->pdev->dev, data_buf); +} + +void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf) +{ + if (!buf) + return; + + ena_dump_stats_ex(adapter, buf); +} + +void ena_dump_stats_to_dmesg(struct ena_adapter *adapter) +{ + ena_dump_stats_ex(adapter, NULL); +} |