| // SPDX-License-Identifier: (GPL-2.0 OR MIT) |
| /* Google virtual Ethernet (gve) driver |
| * |
| * Copyright (C) 2015-2021 Google, Inc. |
| */ |
| |
| #include <linux/ethtool.h> |
| #include <linux/rtnetlink.h> |
| #include "gve.h" |
| #include "gve_adminq.h" |
| #include "gve_dqo.h" |
| |
| static void gve_get_drvinfo(struct net_device *netdev, |
| struct ethtool_drvinfo *info) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| strscpy(info->driver, "gve", sizeof(info->driver)); |
| strscpy(info->version, gve_version_str, sizeof(info->version)); |
| strscpy(info->bus_info, pci_name(priv->pdev), sizeof(info->bus_info)); |
| } |
| |
| static void gve_set_msglevel(struct net_device *netdev, u32 value) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| priv->msg_enable = value; |
| } |
| |
| static u32 gve_get_msglevel(struct net_device *netdev) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| return priv->msg_enable; |
| } |
| |
| static const char gve_gstrings_main_stats[][ETH_GSTRING_LEN] = { |
| "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", |
| "rx_dropped", "tx_dropped", "tx_timeouts", |
| "rx_skb_alloc_fail", "rx_buf_alloc_fail", "rx_desc_err_dropped_pkt", |
| "interface_up_cnt", "interface_down_cnt", "reset_cnt", |
| "page_alloc_fail", "dma_mapping_error", "stats_report_trigger_cnt", |
| }; |
| |
| static const char gve_gstrings_rx_stats[][ETH_GSTRING_LEN] = { |
| "rx_posted_desc[%u]", "rx_completed_desc[%u]", "rx_consumed_desc[%u]", "rx_bytes[%u]", |
| "rx_cont_packet_cnt[%u]", "rx_frag_flip_cnt[%u]", "rx_frag_copy_cnt[%u]", |
| "rx_frag_alloc_cnt[%u]", |
| "rx_dropped_pkt[%u]", "rx_copybreak_pkt[%u]", "rx_copied_pkt[%u]", |
| "rx_queue_drop_cnt[%u]", "rx_no_buffers_posted[%u]", |
| "rx_drops_packet_over_mru[%u]", "rx_drops_invalid_checksum[%u]", |
| }; |
| |
| static const char gve_gstrings_tx_stats[][ETH_GSTRING_LEN] = { |
| "tx_posted_desc[%u]", "tx_completed_desc[%u]", "tx_consumed_desc[%u]", "tx_bytes[%u]", |
| "tx_wake[%u]", "tx_stop[%u]", "tx_event_counter[%u]", |
| "tx_dma_mapping_error[%u]", |
| }; |
| |
| static const char gve_gstrings_adminq_stats[][ETH_GSTRING_LEN] = { |
| "adminq_prod_cnt", "adminq_cmd_fail", "adminq_timeouts", |
| "adminq_describe_device_cnt", "adminq_cfg_device_resources_cnt", |
| "adminq_register_page_list_cnt", "adminq_unregister_page_list_cnt", |
| "adminq_create_tx_queue_cnt", "adminq_create_rx_queue_cnt", |
| "adminq_destroy_tx_queue_cnt", "adminq_destroy_rx_queue_cnt", |
| "adminq_dcfg_device_resources_cnt", "adminq_set_driver_parameter_cnt", |
| "adminq_report_stats_cnt", "adminq_report_link_speed_cnt" |
| }; |
| |
| static const char gve_gstrings_priv_flags[][ETH_GSTRING_LEN] = { |
| "report-stats", |
| }; |
| |
| #define GVE_MAIN_STATS_LEN ARRAY_SIZE(gve_gstrings_main_stats) |
| #define GVE_ADMINQ_STATS_LEN ARRAY_SIZE(gve_gstrings_adminq_stats) |
| #define NUM_GVE_TX_CNTS ARRAY_SIZE(gve_gstrings_tx_stats) |
| #define NUM_GVE_RX_CNTS ARRAY_SIZE(gve_gstrings_rx_stats) |
| #define GVE_PRIV_FLAGS_STR_LEN ARRAY_SIZE(gve_gstrings_priv_flags) |
| |
| static void gve_get_strings(struct net_device *netdev, u32 stringset, u8 *data) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| char *s = (char *)data; |
| int i, j; |
| |
| switch (stringset) { |
| case ETH_SS_STATS: |
| memcpy(s, *gve_gstrings_main_stats, |
| sizeof(gve_gstrings_main_stats)); |
| s += sizeof(gve_gstrings_main_stats); |
| |
| for (i = 0; i < priv->rx_cfg.num_queues; i++) { |
| for (j = 0; j < NUM_GVE_RX_CNTS; j++) { |
| snprintf(s, ETH_GSTRING_LEN, |
| gve_gstrings_rx_stats[j], i); |
| s += ETH_GSTRING_LEN; |
| } |
| } |
| |
| for (i = 0; i < priv->tx_cfg.num_queues; i++) { |
| for (j = 0; j < NUM_GVE_TX_CNTS; j++) { |
| snprintf(s, ETH_GSTRING_LEN, |
| gve_gstrings_tx_stats[j], i); |
| s += ETH_GSTRING_LEN; |
| } |
| } |
| |
| memcpy(s, *gve_gstrings_adminq_stats, |
| sizeof(gve_gstrings_adminq_stats)); |
| s += sizeof(gve_gstrings_adminq_stats); |
| break; |
| |
| case ETH_SS_PRIV_FLAGS: |
| memcpy(s, *gve_gstrings_priv_flags, |
| sizeof(gve_gstrings_priv_flags)); |
| s += sizeof(gve_gstrings_priv_flags); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| static int gve_get_sset_count(struct net_device *netdev, int sset) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| switch (sset) { |
| case ETH_SS_STATS: |
| return GVE_MAIN_STATS_LEN + GVE_ADMINQ_STATS_LEN + |
| (priv->rx_cfg.num_queues * NUM_GVE_RX_CNTS) + |
| (priv->tx_cfg.num_queues * NUM_GVE_TX_CNTS); |
| case ETH_SS_PRIV_FLAGS: |
| return GVE_PRIV_FLAGS_STR_LEN; |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static void |
| gve_get_ethtool_stats(struct net_device *netdev, |
| struct ethtool_stats *stats, u64 *data) |
| { |
| u64 tmp_rx_pkts, tmp_rx_bytes, tmp_rx_skb_alloc_fail, |
| tmp_rx_buf_alloc_fail, tmp_rx_desc_err_dropped_pkt, |
| tmp_tx_pkts, tmp_tx_bytes; |
| u64 rx_buf_alloc_fail, rx_desc_err_dropped_pkt, rx_pkts, |
| rx_skb_alloc_fail, rx_bytes, tx_pkts, tx_bytes, tx_dropped; |
| int stats_idx, base_stats_idx, max_stats_idx; |
| struct stats *report_stats; |
| int *rx_qid_to_stats_idx; |
| int *tx_qid_to_stats_idx; |
| struct gve_priv *priv; |
| bool skip_nic_stats; |
| unsigned int start; |
| int ring; |
| int i, j; |
| |
| ASSERT_RTNL(); |
| |
| priv = netdev_priv(netdev); |
| report_stats = priv->stats_report->stats; |
| rx_qid_to_stats_idx = kmalloc_array(priv->rx_cfg.num_queues, |
| sizeof(int), GFP_KERNEL); |
| if (!rx_qid_to_stats_idx) |
| return; |
| tx_qid_to_stats_idx = kmalloc_array(priv->tx_cfg.num_queues, |
| sizeof(int), GFP_KERNEL); |
| if (!tx_qid_to_stats_idx) { |
| kfree(rx_qid_to_stats_idx); |
| return; |
| } |
| for (rx_pkts = 0, rx_bytes = 0, rx_skb_alloc_fail = 0, |
| rx_buf_alloc_fail = 0, rx_desc_err_dropped_pkt = 0, ring = 0; |
| ring < priv->rx_cfg.num_queues; ring++) { |
| if (priv->rx) { |
| do { |
| struct gve_rx_ring *rx = &priv->rx[ring]; |
| |
| start = |
| u64_stats_fetch_begin(&priv->rx[ring].statss); |
| tmp_rx_pkts = rx->rpackets; |
| tmp_rx_bytes = rx->rbytes; |
| tmp_rx_skb_alloc_fail = rx->rx_skb_alloc_fail; |
| tmp_rx_buf_alloc_fail = rx->rx_buf_alloc_fail; |
| tmp_rx_desc_err_dropped_pkt = |
| rx->rx_desc_err_dropped_pkt; |
| } while (u64_stats_fetch_retry(&priv->rx[ring].statss, |
| start)); |
| rx_pkts += tmp_rx_pkts; |
| rx_bytes += tmp_rx_bytes; |
| rx_skb_alloc_fail += tmp_rx_skb_alloc_fail; |
| rx_buf_alloc_fail += tmp_rx_buf_alloc_fail; |
| rx_desc_err_dropped_pkt += tmp_rx_desc_err_dropped_pkt; |
| } |
| } |
| for (tx_pkts = 0, tx_bytes = 0, tx_dropped = 0, ring = 0; |
| ring < priv->tx_cfg.num_queues; ring++) { |
| if (priv->tx) { |
| do { |
| start = |
| u64_stats_fetch_begin(&priv->tx[ring].statss); |
| tmp_tx_pkts = priv->tx[ring].pkt_done; |
| tmp_tx_bytes = priv->tx[ring].bytes_done; |
| } while (u64_stats_fetch_retry(&priv->tx[ring].statss, |
| start)); |
| tx_pkts += tmp_tx_pkts; |
| tx_bytes += tmp_tx_bytes; |
| tx_dropped += priv->tx[ring].dropped_pkt; |
| } |
| } |
| |
| i = 0; |
| data[i++] = rx_pkts; |
| data[i++] = tx_pkts; |
| data[i++] = rx_bytes; |
| data[i++] = tx_bytes; |
| /* total rx dropped packets */ |
| data[i++] = rx_skb_alloc_fail + rx_buf_alloc_fail + |
| rx_desc_err_dropped_pkt; |
| data[i++] = tx_dropped; |
| data[i++] = priv->tx_timeo_cnt; |
| data[i++] = rx_skb_alloc_fail; |
| data[i++] = rx_buf_alloc_fail; |
| data[i++] = rx_desc_err_dropped_pkt; |
| data[i++] = priv->interface_up_cnt; |
| data[i++] = priv->interface_down_cnt; |
| data[i++] = priv->reset_cnt; |
| data[i++] = priv->page_alloc_fail; |
| data[i++] = priv->dma_mapping_error; |
| data[i++] = priv->stats_report_trigger_cnt; |
| i = GVE_MAIN_STATS_LEN; |
| |
| /* For rx cross-reporting stats, start from nic rx stats in report */ |
| base_stats_idx = GVE_TX_STATS_REPORT_NUM * priv->tx_cfg.num_queues + |
| GVE_RX_STATS_REPORT_NUM * priv->rx_cfg.num_queues; |
| max_stats_idx = NIC_RX_STATS_REPORT_NUM * priv->rx_cfg.num_queues + |
| base_stats_idx; |
| /* Preprocess the stats report for rx, map queue id to start index */ |
| skip_nic_stats = false; |
| for (stats_idx = base_stats_idx; stats_idx < max_stats_idx; |
| stats_idx += NIC_RX_STATS_REPORT_NUM) { |
| u32 stat_name = be32_to_cpu(report_stats[stats_idx].stat_name); |
| u32 queue_id = be32_to_cpu(report_stats[stats_idx].queue_id); |
| |
| if (stat_name == 0) { |
| /* no stats written by NIC yet */ |
| skip_nic_stats = true; |
| break; |
| } |
| rx_qid_to_stats_idx[queue_id] = stats_idx; |
| } |
| /* walk RX rings */ |
| if (priv->rx) { |
| for (ring = 0; ring < priv->rx_cfg.num_queues; ring++) { |
| struct gve_rx_ring *rx = &priv->rx[ring]; |
| |
| data[i++] = rx->fill_cnt; |
| data[i++] = rx->cnt; |
| data[i++] = rx->fill_cnt - rx->cnt; |
| do { |
| start = |
| u64_stats_fetch_begin(&priv->rx[ring].statss); |
| tmp_rx_bytes = rx->rbytes; |
| tmp_rx_skb_alloc_fail = rx->rx_skb_alloc_fail; |
| tmp_rx_buf_alloc_fail = rx->rx_buf_alloc_fail; |
| tmp_rx_desc_err_dropped_pkt = |
| rx->rx_desc_err_dropped_pkt; |
| } while (u64_stats_fetch_retry(&priv->rx[ring].statss, |
| start)); |
| data[i++] = tmp_rx_bytes; |
| data[i++] = rx->rx_cont_packet_cnt; |
| data[i++] = rx->rx_frag_flip_cnt; |
| data[i++] = rx->rx_frag_copy_cnt; |
| data[i++] = rx->rx_frag_alloc_cnt; |
| /* rx dropped packets */ |
| data[i++] = tmp_rx_skb_alloc_fail + |
| tmp_rx_buf_alloc_fail + |
| tmp_rx_desc_err_dropped_pkt; |
| data[i++] = rx->rx_copybreak_pkt; |
| data[i++] = rx->rx_copied_pkt; |
| /* stats from NIC */ |
| if (skip_nic_stats) { |
| /* skip NIC rx stats */ |
| i += NIC_RX_STATS_REPORT_NUM; |
| continue; |
| } |
| for (j = 0; j < NIC_RX_STATS_REPORT_NUM; j++) { |
| u64 value = |
| be64_to_cpu(report_stats[rx_qid_to_stats_idx[ring] + j].value); |
| |
| data[i++] = value; |
| } |
| } |
| } else { |
| i += priv->rx_cfg.num_queues * NUM_GVE_RX_CNTS; |
| } |
| |
| /* For tx cross-reporting stats, start from nic tx stats in report */ |
| base_stats_idx = max_stats_idx; |
| max_stats_idx = NIC_TX_STATS_REPORT_NUM * priv->tx_cfg.num_queues + |
| max_stats_idx; |
| /* Preprocess the stats report for tx, map queue id to start index */ |
| skip_nic_stats = false; |
| for (stats_idx = base_stats_idx; stats_idx < max_stats_idx; |
| stats_idx += NIC_TX_STATS_REPORT_NUM) { |
| u32 stat_name = be32_to_cpu(report_stats[stats_idx].stat_name); |
| u32 queue_id = be32_to_cpu(report_stats[stats_idx].queue_id); |
| |
| if (stat_name == 0) { |
| /* no stats written by NIC yet */ |
| skip_nic_stats = true; |
| break; |
| } |
| tx_qid_to_stats_idx[queue_id] = stats_idx; |
| } |
| /* walk TX rings */ |
| if (priv->tx) { |
| for (ring = 0; ring < priv->tx_cfg.num_queues; ring++) { |
| struct gve_tx_ring *tx = &priv->tx[ring]; |
| |
| if (gve_is_gqi(priv)) { |
| data[i++] = tx->req; |
| data[i++] = tx->done; |
| data[i++] = tx->req - tx->done; |
| } else { |
| /* DQO doesn't currently support |
| * posted/completed descriptor counts; |
| */ |
| data[i++] = 0; |
| data[i++] = 0; |
| data[i++] = tx->dqo_tx.tail - tx->dqo_tx.head; |
| } |
| do { |
| start = |
| u64_stats_fetch_begin(&priv->tx[ring].statss); |
| tmp_tx_bytes = tx->bytes_done; |
| } while (u64_stats_fetch_retry(&priv->tx[ring].statss, |
| start)); |
| data[i++] = tmp_tx_bytes; |
| data[i++] = tx->wake_queue; |
| data[i++] = tx->stop_queue; |
| data[i++] = gve_tx_load_event_counter(priv, tx); |
| data[i++] = tx->dma_mapping_error; |
| /* stats from NIC */ |
| if (skip_nic_stats) { |
| /* skip NIC tx stats */ |
| i += NIC_TX_STATS_REPORT_NUM; |
| continue; |
| } |
| for (j = 0; j < NIC_TX_STATS_REPORT_NUM; j++) { |
| u64 value = |
| be64_to_cpu(report_stats[tx_qid_to_stats_idx[ring] + j].value); |
| data[i++] = value; |
| } |
| } |
| } else { |
| i += priv->tx_cfg.num_queues * NUM_GVE_TX_CNTS; |
| } |
| |
| kfree(rx_qid_to_stats_idx); |
| kfree(tx_qid_to_stats_idx); |
| /* AQ Stats */ |
| data[i++] = priv->adminq_prod_cnt; |
| data[i++] = priv->adminq_cmd_fail; |
| data[i++] = priv->adminq_timeouts; |
| data[i++] = priv->adminq_describe_device_cnt; |
| data[i++] = priv->adminq_cfg_device_resources_cnt; |
| data[i++] = priv->adminq_register_page_list_cnt; |
| data[i++] = priv->adminq_unregister_page_list_cnt; |
| data[i++] = priv->adminq_create_tx_queue_cnt; |
| data[i++] = priv->adminq_create_rx_queue_cnt; |
| data[i++] = priv->adminq_destroy_tx_queue_cnt; |
| data[i++] = priv->adminq_destroy_rx_queue_cnt; |
| data[i++] = priv->adminq_dcfg_device_resources_cnt; |
| data[i++] = priv->adminq_set_driver_parameter_cnt; |
| data[i++] = priv->adminq_report_stats_cnt; |
| data[i++] = priv->adminq_report_link_speed_cnt; |
| } |
| |
| static void gve_get_channels(struct net_device *netdev, |
| struct ethtool_channels *cmd) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| cmd->max_rx = priv->rx_cfg.max_queues; |
| cmd->max_tx = priv->tx_cfg.max_queues; |
| cmd->max_other = 0; |
| cmd->max_combined = 0; |
| cmd->rx_count = priv->rx_cfg.num_queues; |
| cmd->tx_count = priv->tx_cfg.num_queues; |
| cmd->other_count = 0; |
| cmd->combined_count = 0; |
| } |
| |
| static int gve_set_channels(struct net_device *netdev, |
| struct ethtool_channels *cmd) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| struct gve_queue_config new_tx_cfg = priv->tx_cfg; |
| struct gve_queue_config new_rx_cfg = priv->rx_cfg; |
| struct ethtool_channels old_settings; |
| int new_tx = cmd->tx_count; |
| int new_rx = cmd->rx_count; |
| |
| gve_get_channels(netdev, &old_settings); |
| |
| /* Changing combined is not allowed */ |
| if (cmd->combined_count != old_settings.combined_count) |
| return -EINVAL; |
| |
| if (!new_rx || !new_tx) |
| return -EINVAL; |
| |
| if (!netif_carrier_ok(netdev)) { |
| priv->tx_cfg.num_queues = new_tx; |
| priv->rx_cfg.num_queues = new_rx; |
| return 0; |
| } |
| |
| new_tx_cfg.num_queues = new_tx; |
| new_rx_cfg.num_queues = new_rx; |
| |
| return gve_adjust_queues(priv, new_rx_cfg, new_tx_cfg); |
| } |
| |
| static void gve_get_ringparam(struct net_device *netdev, |
| struct ethtool_ringparam *cmd, |
| struct kernel_ethtool_ringparam *kernel_cmd, |
| struct netlink_ext_ack *extack) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| cmd->rx_max_pending = priv->rx_desc_cnt; |
| cmd->tx_max_pending = priv->tx_desc_cnt; |
| cmd->rx_pending = priv->rx_desc_cnt; |
| cmd->tx_pending = priv->tx_desc_cnt; |
| } |
| |
| static int gve_user_reset(struct net_device *netdev, u32 *flags) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| if (*flags == ETH_RESET_ALL) { |
| *flags = 0; |
| return gve_reset(priv, true); |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int gve_get_tunable(struct net_device *netdev, |
| const struct ethtool_tunable *etuna, void *value) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| switch (etuna->id) { |
| case ETHTOOL_RX_COPYBREAK: |
| *(u32 *)value = priv->rx_copybreak; |
| return 0; |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static int gve_set_tunable(struct net_device *netdev, |
| const struct ethtool_tunable *etuna, |
| const void *value) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| u32 len; |
| |
| switch (etuna->id) { |
| case ETHTOOL_RX_COPYBREAK: |
| { |
| u32 max_copybreak = gve_is_gqi(priv) ? |
| (PAGE_SIZE / 2) : priv->data_buffer_size_dqo; |
| |
| len = *(u32 *)value; |
| if (len > max_copybreak) |
| return -EINVAL; |
| priv->rx_copybreak = len; |
| return 0; |
| } |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static u32 gve_get_priv_flags(struct net_device *netdev) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| u32 ret_flags = 0; |
| |
| /* Only 1 flag exists currently: report-stats (BIT(O)), so set that flag. */ |
| if (priv->ethtool_flags & BIT(0)) |
| ret_flags |= BIT(0); |
| return ret_flags; |
| } |
| |
| static int gve_set_priv_flags(struct net_device *netdev, u32 flags) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| u64 ori_flags, new_flags; |
| |
| ori_flags = READ_ONCE(priv->ethtool_flags); |
| new_flags = ori_flags; |
| |
| /* Only one priv flag exists: report-stats (BIT(0))*/ |
| if (flags & BIT(0)) |
| new_flags |= BIT(0); |
| else |
| new_flags &= ~(BIT(0)); |
| priv->ethtool_flags = new_flags; |
| /* start report-stats timer when user turns report stats on. */ |
| if (flags & BIT(0)) { |
| mod_timer(&priv->stats_report_timer, |
| round_jiffies(jiffies + |
| msecs_to_jiffies(priv->stats_report_timer_period))); |
| } |
| /* Zero off gve stats when report-stats turned off and */ |
| /* delete report stats timer. */ |
| if (!(flags & BIT(0)) && (ori_flags & BIT(0))) { |
| int tx_stats_num = GVE_TX_STATS_REPORT_NUM * |
| priv->tx_cfg.num_queues; |
| int rx_stats_num = GVE_RX_STATS_REPORT_NUM * |
| priv->rx_cfg.num_queues; |
| |
| memset(priv->stats_report->stats, 0, (tx_stats_num + rx_stats_num) * |
| sizeof(struct stats)); |
| del_timer_sync(&priv->stats_report_timer); |
| } |
| return 0; |
| } |
| |
| static int gve_get_link_ksettings(struct net_device *netdev, |
| struct ethtool_link_ksettings *cmd) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| int err = gve_adminq_report_link_speed(priv); |
| |
| cmd->base.speed = priv->link_speed; |
| return err; |
| } |
| |
| static int gve_get_coalesce(struct net_device *netdev, |
| struct ethtool_coalesce *ec, |
| struct kernel_ethtool_coalesce *kernel_ec, |
| struct netlink_ext_ack *extack) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| |
| if (gve_is_gqi(priv)) |
| return -EOPNOTSUPP; |
| ec->tx_coalesce_usecs = priv->tx_coalesce_usecs; |
| ec->rx_coalesce_usecs = priv->rx_coalesce_usecs; |
| |
| return 0; |
| } |
| |
| static int gve_set_coalesce(struct net_device *netdev, |
| struct ethtool_coalesce *ec, |
| struct kernel_ethtool_coalesce *kernel_ec, |
| struct netlink_ext_ack *extack) |
| { |
| struct gve_priv *priv = netdev_priv(netdev); |
| u32 tx_usecs_orig = priv->tx_coalesce_usecs; |
| u32 rx_usecs_orig = priv->rx_coalesce_usecs; |
| int idx; |
| |
| if (gve_is_gqi(priv)) |
| return -EOPNOTSUPP; |
| |
| if (ec->tx_coalesce_usecs > GVE_MAX_ITR_INTERVAL_DQO || |
| ec->rx_coalesce_usecs > GVE_MAX_ITR_INTERVAL_DQO) |
| return -EINVAL; |
| priv->tx_coalesce_usecs = ec->tx_coalesce_usecs; |
| priv->rx_coalesce_usecs = ec->rx_coalesce_usecs; |
| |
| if (tx_usecs_orig != priv->tx_coalesce_usecs) { |
| for (idx = 0; idx < priv->tx_cfg.num_queues; idx++) { |
| int ntfy_idx = gve_tx_idx_to_ntfy(priv, idx); |
| struct gve_notify_block *block = &priv->ntfy_blocks[ntfy_idx]; |
| |
| gve_set_itr_coalesce_usecs_dqo(priv, block, |
| priv->tx_coalesce_usecs); |
| } |
| } |
| |
| if (rx_usecs_orig != priv->rx_coalesce_usecs) { |
| for (idx = 0; idx < priv->rx_cfg.num_queues; idx++) { |
| int ntfy_idx = gve_rx_idx_to_ntfy(priv, idx); |
| struct gve_notify_block *block = &priv->ntfy_blocks[ntfy_idx]; |
| |
| gve_set_itr_coalesce_usecs_dqo(priv, block, |
| priv->rx_coalesce_usecs); |
| } |
| } |
| |
| return 0; |
| } |
| |
| const struct ethtool_ops gve_ethtool_ops = { |
| .supported_coalesce_params = ETHTOOL_COALESCE_USECS, |
| .get_drvinfo = gve_get_drvinfo, |
| .get_strings = gve_get_strings, |
| .get_sset_count = gve_get_sset_count, |
| .get_ethtool_stats = gve_get_ethtool_stats, |
| .set_msglevel = gve_set_msglevel, |
| .get_msglevel = gve_get_msglevel, |
| .set_channels = gve_set_channels, |
| .get_channels = gve_get_channels, |
| .get_link = ethtool_op_get_link, |
| .get_coalesce = gve_get_coalesce, |
| .set_coalesce = gve_set_coalesce, |
| .get_ringparam = gve_get_ringparam, |
| .reset = gve_user_reset, |
| .get_tunable = gve_get_tunable, |
| .set_tunable = gve_set_tunable, |
| .get_priv_flags = gve_get_priv_flags, |
| .set_priv_flags = gve_set_priv_flags, |
| .get_link_ksettings = gve_get_link_ksettings |
| }; |