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0001 // SPDX-License-Identifier: GPL-2.0
0002 /* Copyright (c)  2018 Intel Corporation */
0003 
0004 /* ethtool support for igc */
0005 #include <linux/if_vlan.h>
0006 #include <linux/pm_runtime.h>
0007 #include <linux/mdio.h>
0008 
0009 #include "igc.h"
0010 #include "igc_diag.h"
0011 
0012 /* forward declaration */
0013 struct igc_stats {
0014     char stat_string[ETH_GSTRING_LEN];
0015     int sizeof_stat;
0016     int stat_offset;
0017 };
0018 
0019 #define IGC_STAT(_name, _stat) { \
0020     .stat_string = _name, \
0021     .sizeof_stat = sizeof_field(struct igc_adapter, _stat), \
0022     .stat_offset = offsetof(struct igc_adapter, _stat) \
0023 }
0024 
0025 static const struct igc_stats igc_gstrings_stats[] = {
0026     IGC_STAT("rx_packets", stats.gprc),
0027     IGC_STAT("tx_packets", stats.gptc),
0028     IGC_STAT("rx_bytes", stats.gorc),
0029     IGC_STAT("tx_bytes", stats.gotc),
0030     IGC_STAT("rx_broadcast", stats.bprc),
0031     IGC_STAT("tx_broadcast", stats.bptc),
0032     IGC_STAT("rx_multicast", stats.mprc),
0033     IGC_STAT("tx_multicast", stats.mptc),
0034     IGC_STAT("multicast", stats.mprc),
0035     IGC_STAT("collisions", stats.colc),
0036     IGC_STAT("rx_crc_errors", stats.crcerrs),
0037     IGC_STAT("rx_no_buffer_count", stats.rnbc),
0038     IGC_STAT("rx_missed_errors", stats.mpc),
0039     IGC_STAT("tx_aborted_errors", stats.ecol),
0040     IGC_STAT("tx_carrier_errors", stats.tncrs),
0041     IGC_STAT("tx_window_errors", stats.latecol),
0042     IGC_STAT("tx_abort_late_coll", stats.latecol),
0043     IGC_STAT("tx_deferred_ok", stats.dc),
0044     IGC_STAT("tx_single_coll_ok", stats.scc),
0045     IGC_STAT("tx_multi_coll_ok", stats.mcc),
0046     IGC_STAT("tx_timeout_count", tx_timeout_count),
0047     IGC_STAT("rx_long_length_errors", stats.roc),
0048     IGC_STAT("rx_short_length_errors", stats.ruc),
0049     IGC_STAT("rx_align_errors", stats.algnerrc),
0050     IGC_STAT("tx_tcp_seg_good", stats.tsctc),
0051     IGC_STAT("tx_tcp_seg_failed", stats.tsctfc),
0052     IGC_STAT("rx_flow_control_xon", stats.xonrxc),
0053     IGC_STAT("rx_flow_control_xoff", stats.xoffrxc),
0054     IGC_STAT("tx_flow_control_xon", stats.xontxc),
0055     IGC_STAT("tx_flow_control_xoff", stats.xofftxc),
0056     IGC_STAT("rx_long_byte_count", stats.gorc),
0057     IGC_STAT("tx_dma_out_of_sync", stats.doosync),
0058     IGC_STAT("tx_smbus", stats.mgptc),
0059     IGC_STAT("rx_smbus", stats.mgprc),
0060     IGC_STAT("dropped_smbus", stats.mgpdc),
0061     IGC_STAT("os2bmc_rx_by_bmc", stats.o2bgptc),
0062     IGC_STAT("os2bmc_tx_by_bmc", stats.b2ospc),
0063     IGC_STAT("os2bmc_tx_by_host", stats.o2bspc),
0064     IGC_STAT("os2bmc_rx_by_host", stats.b2ogprc),
0065     IGC_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
0066     IGC_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped),
0067     IGC_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
0068     IGC_STAT("tx_lpi_counter", stats.tlpic),
0069     IGC_STAT("rx_lpi_counter", stats.rlpic),
0070 };
0071 
0072 #define IGC_NETDEV_STAT(_net_stat) { \
0073     .stat_string = __stringify(_net_stat), \
0074     .sizeof_stat = sizeof_field(struct rtnl_link_stats64, _net_stat), \
0075     .stat_offset = offsetof(struct rtnl_link_stats64, _net_stat) \
0076 }
0077 
0078 static const struct igc_stats igc_gstrings_net_stats[] = {
0079     IGC_NETDEV_STAT(rx_errors),
0080     IGC_NETDEV_STAT(tx_errors),
0081     IGC_NETDEV_STAT(tx_dropped),
0082     IGC_NETDEV_STAT(rx_length_errors),
0083     IGC_NETDEV_STAT(rx_over_errors),
0084     IGC_NETDEV_STAT(rx_frame_errors),
0085     IGC_NETDEV_STAT(rx_fifo_errors),
0086     IGC_NETDEV_STAT(tx_fifo_errors),
0087     IGC_NETDEV_STAT(tx_heartbeat_errors)
0088 };
0089 
0090 enum igc_diagnostics_results {
0091     TEST_REG = 0,
0092     TEST_EEP,
0093     TEST_IRQ,
0094     TEST_LOOP,
0095     TEST_LINK
0096 };
0097 
0098 static const char igc_gstrings_test[][ETH_GSTRING_LEN] = {
0099     [TEST_REG]  = "Register test  (offline)",
0100     [TEST_EEP]  = "Eeprom test    (offline)",
0101     [TEST_IRQ]  = "Interrupt test (offline)",
0102     [TEST_LOOP] = "Loopback test  (offline)",
0103     [TEST_LINK] = "Link test   (on/offline)"
0104 };
0105 
0106 #define IGC_TEST_LEN (sizeof(igc_gstrings_test) / ETH_GSTRING_LEN)
0107 
0108 #define IGC_GLOBAL_STATS_LEN    \
0109     (sizeof(igc_gstrings_stats) / sizeof(struct igc_stats))
0110 #define IGC_NETDEV_STATS_LEN    \
0111     (sizeof(igc_gstrings_net_stats) / sizeof(struct igc_stats))
0112 #define IGC_RX_QUEUE_STATS_LEN \
0113     (sizeof(struct igc_rx_queue_stats) / sizeof(u64))
0114 #define IGC_TX_QUEUE_STATS_LEN 3 /* packets, bytes, restart_queue */
0115 #define IGC_QUEUE_STATS_LEN \
0116     ((((struct igc_adapter *)netdev_priv(netdev))->num_rx_queues * \
0117       IGC_RX_QUEUE_STATS_LEN) + \
0118      (((struct igc_adapter *)netdev_priv(netdev))->num_tx_queues * \
0119       IGC_TX_QUEUE_STATS_LEN))
0120 #define IGC_STATS_LEN \
0121     (IGC_GLOBAL_STATS_LEN + IGC_NETDEV_STATS_LEN + IGC_QUEUE_STATS_LEN)
0122 
0123 static const char igc_priv_flags_strings[][ETH_GSTRING_LEN] = {
0124 #define IGC_PRIV_FLAGS_LEGACY_RX    BIT(0)
0125     "legacy-rx",
0126 };
0127 
0128 #define IGC_PRIV_FLAGS_STR_LEN ARRAY_SIZE(igc_priv_flags_strings)
0129 
0130 static void igc_ethtool_get_drvinfo(struct net_device *netdev,
0131                     struct ethtool_drvinfo *drvinfo)
0132 {
0133     struct igc_adapter *adapter = netdev_priv(netdev);
0134     struct igc_hw *hw = &adapter->hw;
0135     u16 nvm_version = 0;
0136     u16 gphy_version;
0137 
0138     strscpy(drvinfo->driver, igc_driver_name, sizeof(drvinfo->driver));
0139 
0140     /* NVM image version is reported as firmware version for i225 device */
0141     hw->nvm.ops.read(hw, IGC_NVM_DEV_STARTER, 1, &nvm_version);
0142 
0143     /* gPHY firmware version is reported as PHY FW version */
0144     gphy_version = igc_read_phy_fw_version(hw);
0145 
0146     scnprintf(adapter->fw_version,
0147           sizeof(adapter->fw_version),
0148           "%x:%x",
0149           nvm_version,
0150           gphy_version);
0151 
0152     strscpy(drvinfo->fw_version, adapter->fw_version,
0153         sizeof(drvinfo->fw_version));
0154 
0155     strscpy(drvinfo->bus_info, pci_name(adapter->pdev),
0156         sizeof(drvinfo->bus_info));
0157 
0158     drvinfo->n_priv_flags = IGC_PRIV_FLAGS_STR_LEN;
0159 }
0160 
0161 static int igc_ethtool_get_regs_len(struct net_device *netdev)
0162 {
0163     return IGC_REGS_LEN * sizeof(u32);
0164 }
0165 
0166 static void igc_ethtool_get_regs(struct net_device *netdev,
0167                  struct ethtool_regs *regs, void *p)
0168 {
0169     struct igc_adapter *adapter = netdev_priv(netdev);
0170     struct igc_hw *hw = &adapter->hw;
0171     u32 *regs_buff = p;
0172     u8 i;
0173 
0174     memset(p, 0, IGC_REGS_LEN * sizeof(u32));
0175 
0176     regs->version = (2u << 24) | (hw->revision_id << 16) | hw->device_id;
0177 
0178     /* General Registers */
0179     regs_buff[0] = rd32(IGC_CTRL);
0180     regs_buff[1] = rd32(IGC_STATUS);
0181     regs_buff[2] = rd32(IGC_CTRL_EXT);
0182     regs_buff[3] = rd32(IGC_MDIC);
0183     regs_buff[4] = rd32(IGC_CONNSW);
0184 
0185     /* NVM Register */
0186     regs_buff[5] = rd32(IGC_EECD);
0187 
0188     /* Interrupt */
0189     /* Reading EICS for EICR because they read the
0190      * same but EICS does not clear on read
0191      */
0192     regs_buff[6] = rd32(IGC_EICS);
0193     regs_buff[7] = rd32(IGC_EICS);
0194     regs_buff[8] = rd32(IGC_EIMS);
0195     regs_buff[9] = rd32(IGC_EIMC);
0196     regs_buff[10] = rd32(IGC_EIAC);
0197     regs_buff[11] = rd32(IGC_EIAM);
0198     /* Reading ICS for ICR because they read the
0199      * same but ICS does not clear on read
0200      */
0201     regs_buff[12] = rd32(IGC_ICS);
0202     regs_buff[13] = rd32(IGC_ICS);
0203     regs_buff[14] = rd32(IGC_IMS);
0204     regs_buff[15] = rd32(IGC_IMC);
0205     regs_buff[16] = rd32(IGC_IAC);
0206     regs_buff[17] = rd32(IGC_IAM);
0207 
0208     /* Flow Control */
0209     regs_buff[18] = rd32(IGC_FCAL);
0210     regs_buff[19] = rd32(IGC_FCAH);
0211     regs_buff[20] = rd32(IGC_FCTTV);
0212     regs_buff[21] = rd32(IGC_FCRTL);
0213     regs_buff[22] = rd32(IGC_FCRTH);
0214     regs_buff[23] = rd32(IGC_FCRTV);
0215 
0216     /* Receive */
0217     regs_buff[24] = rd32(IGC_RCTL);
0218     regs_buff[25] = rd32(IGC_RXCSUM);
0219     regs_buff[26] = rd32(IGC_RLPML);
0220     regs_buff[27] = rd32(IGC_RFCTL);
0221 
0222     /* Transmit */
0223     regs_buff[28] = rd32(IGC_TCTL);
0224     regs_buff[29] = rd32(IGC_TIPG);
0225 
0226     /* Wake Up */
0227 
0228     /* MAC */
0229 
0230     /* Statistics */
0231     regs_buff[30] = adapter->stats.crcerrs;
0232     regs_buff[31] = adapter->stats.algnerrc;
0233     regs_buff[32] = adapter->stats.symerrs;
0234     regs_buff[33] = adapter->stats.rxerrc;
0235     regs_buff[34] = adapter->stats.mpc;
0236     regs_buff[35] = adapter->stats.scc;
0237     regs_buff[36] = adapter->stats.ecol;
0238     regs_buff[37] = adapter->stats.mcc;
0239     regs_buff[38] = adapter->stats.latecol;
0240     regs_buff[39] = adapter->stats.colc;
0241     regs_buff[40] = adapter->stats.dc;
0242     regs_buff[41] = adapter->stats.tncrs;
0243     regs_buff[42] = adapter->stats.sec;
0244     regs_buff[43] = adapter->stats.htdpmc;
0245     regs_buff[44] = adapter->stats.rlec;
0246     regs_buff[45] = adapter->stats.xonrxc;
0247     regs_buff[46] = adapter->stats.xontxc;
0248     regs_buff[47] = adapter->stats.xoffrxc;
0249     regs_buff[48] = adapter->stats.xofftxc;
0250     regs_buff[49] = adapter->stats.fcruc;
0251     regs_buff[50] = adapter->stats.prc64;
0252     regs_buff[51] = adapter->stats.prc127;
0253     regs_buff[52] = adapter->stats.prc255;
0254     regs_buff[53] = adapter->stats.prc511;
0255     regs_buff[54] = adapter->stats.prc1023;
0256     regs_buff[55] = adapter->stats.prc1522;
0257     regs_buff[56] = adapter->stats.gprc;
0258     regs_buff[57] = adapter->stats.bprc;
0259     regs_buff[58] = adapter->stats.mprc;
0260     regs_buff[59] = adapter->stats.gptc;
0261     regs_buff[60] = adapter->stats.gorc;
0262     regs_buff[61] = adapter->stats.gotc;
0263     regs_buff[62] = adapter->stats.rnbc;
0264     regs_buff[63] = adapter->stats.ruc;
0265     regs_buff[64] = adapter->stats.rfc;
0266     regs_buff[65] = adapter->stats.roc;
0267     regs_buff[66] = adapter->stats.rjc;
0268     regs_buff[67] = adapter->stats.mgprc;
0269     regs_buff[68] = adapter->stats.mgpdc;
0270     regs_buff[69] = adapter->stats.mgptc;
0271     regs_buff[70] = adapter->stats.tor;
0272     regs_buff[71] = adapter->stats.tot;
0273     regs_buff[72] = adapter->stats.tpr;
0274     regs_buff[73] = adapter->stats.tpt;
0275     regs_buff[74] = adapter->stats.ptc64;
0276     regs_buff[75] = adapter->stats.ptc127;
0277     regs_buff[76] = adapter->stats.ptc255;
0278     regs_buff[77] = adapter->stats.ptc511;
0279     regs_buff[78] = adapter->stats.ptc1023;
0280     regs_buff[79] = adapter->stats.ptc1522;
0281     regs_buff[80] = adapter->stats.mptc;
0282     regs_buff[81] = adapter->stats.bptc;
0283     regs_buff[82] = adapter->stats.tsctc;
0284     regs_buff[83] = adapter->stats.iac;
0285     regs_buff[84] = adapter->stats.rpthc;
0286     regs_buff[85] = adapter->stats.hgptc;
0287     regs_buff[86] = adapter->stats.hgorc;
0288     regs_buff[87] = adapter->stats.hgotc;
0289     regs_buff[88] = adapter->stats.lenerrs;
0290     regs_buff[89] = adapter->stats.scvpc;
0291     regs_buff[90] = adapter->stats.hrmpc;
0292 
0293     for (i = 0; i < 4; i++)
0294         regs_buff[91 + i] = rd32(IGC_SRRCTL(i));
0295     for (i = 0; i < 4; i++)
0296         regs_buff[95 + i] = rd32(IGC_PSRTYPE(i));
0297     for (i = 0; i < 4; i++)
0298         regs_buff[99 + i] = rd32(IGC_RDBAL(i));
0299     for (i = 0; i < 4; i++)
0300         regs_buff[103 + i] = rd32(IGC_RDBAH(i));
0301     for (i = 0; i < 4; i++)
0302         regs_buff[107 + i] = rd32(IGC_RDLEN(i));
0303     for (i = 0; i < 4; i++)
0304         regs_buff[111 + i] = rd32(IGC_RDH(i));
0305     for (i = 0; i < 4; i++)
0306         regs_buff[115 + i] = rd32(IGC_RDT(i));
0307     for (i = 0; i < 4; i++)
0308         regs_buff[119 + i] = rd32(IGC_RXDCTL(i));
0309 
0310     for (i = 0; i < 10; i++)
0311         regs_buff[123 + i] = rd32(IGC_EITR(i));
0312     for (i = 0; i < 16; i++)
0313         regs_buff[139 + i] = rd32(IGC_RAL(i));
0314     for (i = 0; i < 16; i++)
0315         regs_buff[145 + i] = rd32(IGC_RAH(i));
0316 
0317     for (i = 0; i < 4; i++)
0318         regs_buff[149 + i] = rd32(IGC_TDBAL(i));
0319     for (i = 0; i < 4; i++)
0320         regs_buff[152 + i] = rd32(IGC_TDBAH(i));
0321     for (i = 0; i < 4; i++)
0322         regs_buff[156 + i] = rd32(IGC_TDLEN(i));
0323     for (i = 0; i < 4; i++)
0324         regs_buff[160 + i] = rd32(IGC_TDH(i));
0325     for (i = 0; i < 4; i++)
0326         regs_buff[164 + i] = rd32(IGC_TDT(i));
0327     for (i = 0; i < 4; i++)
0328         regs_buff[168 + i] = rd32(IGC_TXDCTL(i));
0329 
0330     /* XXX: Due to a bug few lines above, RAL and RAH registers are
0331      * overwritten. To preserve the ABI, we write these registers again in
0332      * regs_buff.
0333      */
0334     for (i = 0; i < 16; i++)
0335         regs_buff[172 + i] = rd32(IGC_RAL(i));
0336     for (i = 0; i < 16; i++)
0337         regs_buff[188 + i] = rd32(IGC_RAH(i));
0338 
0339     regs_buff[204] = rd32(IGC_VLANPQF);
0340 
0341     for (i = 0; i < 8; i++)
0342         regs_buff[205 + i] = rd32(IGC_ETQF(i));
0343 
0344     regs_buff[213] = adapter->stats.tlpic;
0345     regs_buff[214] = adapter->stats.rlpic;
0346 }
0347 
0348 static void igc_ethtool_get_wol(struct net_device *netdev,
0349                 struct ethtool_wolinfo *wol)
0350 {
0351     struct igc_adapter *adapter = netdev_priv(netdev);
0352 
0353     wol->wolopts = 0;
0354 
0355     if (!(adapter->flags & IGC_FLAG_WOL_SUPPORTED))
0356         return;
0357 
0358     wol->supported = WAKE_UCAST | WAKE_MCAST |
0359              WAKE_BCAST | WAKE_MAGIC |
0360              WAKE_PHY;
0361 
0362     /* apply any specific unsupported masks here */
0363     switch (adapter->hw.device_id) {
0364     default:
0365         break;
0366     }
0367 
0368     if (adapter->wol & IGC_WUFC_EX)
0369         wol->wolopts |= WAKE_UCAST;
0370     if (adapter->wol & IGC_WUFC_MC)
0371         wol->wolopts |= WAKE_MCAST;
0372     if (adapter->wol & IGC_WUFC_BC)
0373         wol->wolopts |= WAKE_BCAST;
0374     if (adapter->wol & IGC_WUFC_MAG)
0375         wol->wolopts |= WAKE_MAGIC;
0376     if (adapter->wol & IGC_WUFC_LNKC)
0377         wol->wolopts |= WAKE_PHY;
0378 }
0379 
0380 static int igc_ethtool_set_wol(struct net_device *netdev,
0381                    struct ethtool_wolinfo *wol)
0382 {
0383     struct igc_adapter *adapter = netdev_priv(netdev);
0384 
0385     if (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE | WAKE_FILTER))
0386         return -EOPNOTSUPP;
0387 
0388     if (!(adapter->flags & IGC_FLAG_WOL_SUPPORTED))
0389         return wol->wolopts ? -EOPNOTSUPP : 0;
0390 
0391     /* these settings will always override what we currently have */
0392     adapter->wol = 0;
0393 
0394     if (wol->wolopts & WAKE_UCAST)
0395         adapter->wol |= IGC_WUFC_EX;
0396     if (wol->wolopts & WAKE_MCAST)
0397         adapter->wol |= IGC_WUFC_MC;
0398     if (wol->wolopts & WAKE_BCAST)
0399         adapter->wol |= IGC_WUFC_BC;
0400     if (wol->wolopts & WAKE_MAGIC)
0401         adapter->wol |= IGC_WUFC_MAG;
0402     if (wol->wolopts & WAKE_PHY)
0403         adapter->wol |= IGC_WUFC_LNKC;
0404     device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
0405 
0406     return 0;
0407 }
0408 
0409 static u32 igc_ethtool_get_msglevel(struct net_device *netdev)
0410 {
0411     struct igc_adapter *adapter = netdev_priv(netdev);
0412 
0413     return adapter->msg_enable;
0414 }
0415 
0416 static void igc_ethtool_set_msglevel(struct net_device *netdev, u32 data)
0417 {
0418     struct igc_adapter *adapter = netdev_priv(netdev);
0419 
0420     adapter->msg_enable = data;
0421 }
0422 
0423 static int igc_ethtool_nway_reset(struct net_device *netdev)
0424 {
0425     struct igc_adapter *adapter = netdev_priv(netdev);
0426 
0427     if (netif_running(netdev))
0428         igc_reinit_locked(adapter);
0429     return 0;
0430 }
0431 
0432 static u32 igc_ethtool_get_link(struct net_device *netdev)
0433 {
0434     struct igc_adapter *adapter = netdev_priv(netdev);
0435     struct igc_mac_info *mac = &adapter->hw.mac;
0436 
0437     /* If the link is not reported up to netdev, interrupts are disabled,
0438      * and so the physical link state may have changed since we last
0439      * looked. Set get_link_status to make sure that the true link
0440      * state is interrogated, rather than pulling a cached and possibly
0441      * stale link state from the driver.
0442      */
0443     if (!netif_carrier_ok(netdev))
0444         mac->get_link_status = 1;
0445 
0446     return igc_has_link(adapter);
0447 }
0448 
0449 static int igc_ethtool_get_eeprom_len(struct net_device *netdev)
0450 {
0451     struct igc_adapter *adapter = netdev_priv(netdev);
0452 
0453     return adapter->hw.nvm.word_size * 2;
0454 }
0455 
0456 static int igc_ethtool_get_eeprom(struct net_device *netdev,
0457                   struct ethtool_eeprom *eeprom, u8 *bytes)
0458 {
0459     struct igc_adapter *adapter = netdev_priv(netdev);
0460     struct igc_hw *hw = &adapter->hw;
0461     int first_word, last_word;
0462     u16 *eeprom_buff;
0463     int ret_val = 0;
0464     u16 i;
0465 
0466     if (eeprom->len == 0)
0467         return -EINVAL;
0468 
0469     eeprom->magic = hw->vendor_id | (hw->device_id << 16);
0470 
0471     first_word = eeprom->offset >> 1;
0472     last_word = (eeprom->offset + eeprom->len - 1) >> 1;
0473 
0474     eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
0475                     GFP_KERNEL);
0476     if (!eeprom_buff)
0477         return -ENOMEM;
0478 
0479     if (hw->nvm.type == igc_nvm_eeprom_spi) {
0480         ret_val = hw->nvm.ops.read(hw, first_word,
0481                        last_word - first_word + 1,
0482                        eeprom_buff);
0483     } else {
0484         for (i = 0; i < last_word - first_word + 1; i++) {
0485             ret_val = hw->nvm.ops.read(hw, first_word + i, 1,
0486                            &eeprom_buff[i]);
0487             if (ret_val)
0488                 break;
0489         }
0490     }
0491 
0492     /* Device's eeprom is always little-endian, word addressable */
0493     for (i = 0; i < last_word - first_word + 1; i++)
0494         le16_to_cpus(&eeprom_buff[i]);
0495 
0496     memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1),
0497            eeprom->len);
0498     kfree(eeprom_buff);
0499 
0500     return ret_val;
0501 }
0502 
0503 static int igc_ethtool_set_eeprom(struct net_device *netdev,
0504                   struct ethtool_eeprom *eeprom, u8 *bytes)
0505 {
0506     struct igc_adapter *adapter = netdev_priv(netdev);
0507     struct igc_hw *hw = &adapter->hw;
0508     int max_len, first_word, last_word, ret_val = 0;
0509     u16 *eeprom_buff;
0510     void *ptr;
0511     u16 i;
0512 
0513     if (eeprom->len == 0)
0514         return -EOPNOTSUPP;
0515 
0516     if (hw->mac.type >= igc_i225 &&
0517         !igc_get_flash_presence_i225(hw)) {
0518         return -EOPNOTSUPP;
0519     }
0520 
0521     if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
0522         return -EFAULT;
0523 
0524     max_len = hw->nvm.word_size * 2;
0525 
0526     first_word = eeprom->offset >> 1;
0527     last_word = (eeprom->offset + eeprom->len - 1) >> 1;
0528     eeprom_buff = kmalloc(max_len, GFP_KERNEL);
0529     if (!eeprom_buff)
0530         return -ENOMEM;
0531 
0532     ptr = (void *)eeprom_buff;
0533 
0534     if (eeprom->offset & 1) {
0535         /* need read/modify/write of first changed EEPROM word
0536          * only the second byte of the word is being modified
0537          */
0538         ret_val = hw->nvm.ops.read(hw, first_word, 1,
0539                         &eeprom_buff[0]);
0540         ptr++;
0541     }
0542     if (((eeprom->offset + eeprom->len) & 1) && ret_val == 0) {
0543         /* need read/modify/write of last changed EEPROM word
0544          * only the first byte of the word is being modified
0545          */
0546         ret_val = hw->nvm.ops.read(hw, last_word, 1,
0547                    &eeprom_buff[last_word - first_word]);
0548     }
0549 
0550     /* Device's eeprom is always little-endian, word addressable */
0551     for (i = 0; i < last_word - first_word + 1; i++)
0552         le16_to_cpus(&eeprom_buff[i]);
0553 
0554     memcpy(ptr, bytes, eeprom->len);
0555 
0556     for (i = 0; i < last_word - first_word + 1; i++)
0557         cpu_to_le16s(&eeprom_buff[i]);
0558 
0559     ret_val = hw->nvm.ops.write(hw, first_word,
0560                     last_word - first_word + 1, eeprom_buff);
0561 
0562     /* Update the checksum if nvm write succeeded */
0563     if (ret_val == 0)
0564         hw->nvm.ops.update(hw);
0565 
0566     kfree(eeprom_buff);
0567     return ret_val;
0568 }
0569 
0570 static void
0571 igc_ethtool_get_ringparam(struct net_device *netdev,
0572               struct ethtool_ringparam *ring,
0573               struct kernel_ethtool_ringparam *kernel_ering,
0574               struct netlink_ext_ack *extack)
0575 {
0576     struct igc_adapter *adapter = netdev_priv(netdev);
0577 
0578     ring->rx_max_pending = IGC_MAX_RXD;
0579     ring->tx_max_pending = IGC_MAX_TXD;
0580     ring->rx_pending = adapter->rx_ring_count;
0581     ring->tx_pending = adapter->tx_ring_count;
0582 }
0583 
0584 static int
0585 igc_ethtool_set_ringparam(struct net_device *netdev,
0586               struct ethtool_ringparam *ring,
0587               struct kernel_ethtool_ringparam *kernel_ering,
0588               struct netlink_ext_ack *extack)
0589 {
0590     struct igc_adapter *adapter = netdev_priv(netdev);
0591     struct igc_ring *temp_ring;
0592     u16 new_rx_count, new_tx_count;
0593     int i, err = 0;
0594 
0595     if (ring->rx_mini_pending || ring->rx_jumbo_pending)
0596         return -EINVAL;
0597 
0598     new_rx_count = min_t(u32, ring->rx_pending, IGC_MAX_RXD);
0599     new_rx_count = max_t(u16, new_rx_count, IGC_MIN_RXD);
0600     new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
0601 
0602     new_tx_count = min_t(u32, ring->tx_pending, IGC_MAX_TXD);
0603     new_tx_count = max_t(u16, new_tx_count, IGC_MIN_TXD);
0604     new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
0605 
0606     if (new_tx_count == adapter->tx_ring_count &&
0607         new_rx_count == adapter->rx_ring_count) {
0608         /* nothing to do */
0609         return 0;
0610     }
0611 
0612     while (test_and_set_bit(__IGC_RESETTING, &adapter->state))
0613         usleep_range(1000, 2000);
0614 
0615     if (!netif_running(adapter->netdev)) {
0616         for (i = 0; i < adapter->num_tx_queues; i++)
0617             adapter->tx_ring[i]->count = new_tx_count;
0618         for (i = 0; i < adapter->num_rx_queues; i++)
0619             adapter->rx_ring[i]->count = new_rx_count;
0620         adapter->tx_ring_count = new_tx_count;
0621         adapter->rx_ring_count = new_rx_count;
0622         goto clear_reset;
0623     }
0624 
0625     if (adapter->num_tx_queues > adapter->num_rx_queues)
0626         temp_ring = vmalloc(array_size(sizeof(struct igc_ring),
0627                            adapter->num_tx_queues));
0628     else
0629         temp_ring = vmalloc(array_size(sizeof(struct igc_ring),
0630                            adapter->num_rx_queues));
0631 
0632     if (!temp_ring) {
0633         err = -ENOMEM;
0634         goto clear_reset;
0635     }
0636 
0637     igc_down(adapter);
0638 
0639     /* We can't just free everything and then setup again,
0640      * because the ISRs in MSI-X mode get passed pointers
0641      * to the Tx and Rx ring structs.
0642      */
0643     if (new_tx_count != adapter->tx_ring_count) {
0644         for (i = 0; i < adapter->num_tx_queues; i++) {
0645             memcpy(&temp_ring[i], adapter->tx_ring[i],
0646                    sizeof(struct igc_ring));
0647 
0648             temp_ring[i].count = new_tx_count;
0649             err = igc_setup_tx_resources(&temp_ring[i]);
0650             if (err) {
0651                 while (i) {
0652                     i--;
0653                     igc_free_tx_resources(&temp_ring[i]);
0654                 }
0655                 goto err_setup;
0656             }
0657         }
0658 
0659         for (i = 0; i < adapter->num_tx_queues; i++) {
0660             igc_free_tx_resources(adapter->tx_ring[i]);
0661 
0662             memcpy(adapter->tx_ring[i], &temp_ring[i],
0663                    sizeof(struct igc_ring));
0664         }
0665 
0666         adapter->tx_ring_count = new_tx_count;
0667     }
0668 
0669     if (new_rx_count != adapter->rx_ring_count) {
0670         for (i = 0; i < adapter->num_rx_queues; i++) {
0671             memcpy(&temp_ring[i], adapter->rx_ring[i],
0672                    sizeof(struct igc_ring));
0673 
0674             temp_ring[i].count = new_rx_count;
0675             err = igc_setup_rx_resources(&temp_ring[i]);
0676             if (err) {
0677                 while (i) {
0678                     i--;
0679                     igc_free_rx_resources(&temp_ring[i]);
0680                 }
0681                 goto err_setup;
0682             }
0683         }
0684 
0685         for (i = 0; i < adapter->num_rx_queues; i++) {
0686             igc_free_rx_resources(adapter->rx_ring[i]);
0687 
0688             memcpy(adapter->rx_ring[i], &temp_ring[i],
0689                    sizeof(struct igc_ring));
0690         }
0691 
0692         adapter->rx_ring_count = new_rx_count;
0693     }
0694 err_setup:
0695     igc_up(adapter);
0696     vfree(temp_ring);
0697 clear_reset:
0698     clear_bit(__IGC_RESETTING, &adapter->state);
0699     return err;
0700 }
0701 
0702 static void igc_ethtool_get_pauseparam(struct net_device *netdev,
0703                        struct ethtool_pauseparam *pause)
0704 {
0705     struct igc_adapter *adapter = netdev_priv(netdev);
0706     struct igc_hw *hw = &adapter->hw;
0707 
0708     pause->autoneg =
0709         (adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);
0710 
0711     if (hw->fc.current_mode == igc_fc_rx_pause) {
0712         pause->rx_pause = 1;
0713     } else if (hw->fc.current_mode == igc_fc_tx_pause) {
0714         pause->tx_pause = 1;
0715     } else if (hw->fc.current_mode == igc_fc_full) {
0716         pause->rx_pause = 1;
0717         pause->tx_pause = 1;
0718     }
0719 }
0720 
0721 static int igc_ethtool_set_pauseparam(struct net_device *netdev,
0722                       struct ethtool_pauseparam *pause)
0723 {
0724     struct igc_adapter *adapter = netdev_priv(netdev);
0725     struct igc_hw *hw = &adapter->hw;
0726     int retval = 0;
0727 
0728     adapter->fc_autoneg = pause->autoneg;
0729 
0730     while (test_and_set_bit(__IGC_RESETTING, &adapter->state))
0731         usleep_range(1000, 2000);
0732 
0733     if (adapter->fc_autoneg == AUTONEG_ENABLE) {
0734         hw->fc.requested_mode = igc_fc_default;
0735         if (netif_running(adapter->netdev)) {
0736             igc_down(adapter);
0737             igc_up(adapter);
0738         } else {
0739             igc_reset(adapter);
0740         }
0741     } else {
0742         if (pause->rx_pause && pause->tx_pause)
0743             hw->fc.requested_mode = igc_fc_full;
0744         else if (pause->rx_pause && !pause->tx_pause)
0745             hw->fc.requested_mode = igc_fc_rx_pause;
0746         else if (!pause->rx_pause && pause->tx_pause)
0747             hw->fc.requested_mode = igc_fc_tx_pause;
0748         else if (!pause->rx_pause && !pause->tx_pause)
0749             hw->fc.requested_mode = igc_fc_none;
0750 
0751         hw->fc.current_mode = hw->fc.requested_mode;
0752 
0753         retval = ((hw->phy.media_type == igc_media_type_copper) ?
0754               igc_force_mac_fc(hw) : igc_setup_link(hw));
0755     }
0756 
0757     clear_bit(__IGC_RESETTING, &adapter->state);
0758     return retval;
0759 }
0760 
0761 static void igc_ethtool_get_strings(struct net_device *netdev, u32 stringset,
0762                     u8 *data)
0763 {
0764     struct igc_adapter *adapter = netdev_priv(netdev);
0765     u8 *p = data;
0766     int i;
0767 
0768     switch (stringset) {
0769     case ETH_SS_TEST:
0770         memcpy(data, *igc_gstrings_test,
0771                IGC_TEST_LEN * ETH_GSTRING_LEN);
0772         break;
0773     case ETH_SS_STATS:
0774         for (i = 0; i < IGC_GLOBAL_STATS_LEN; i++)
0775             ethtool_sprintf(&p, igc_gstrings_stats[i].stat_string);
0776         for (i = 0; i < IGC_NETDEV_STATS_LEN; i++)
0777             ethtool_sprintf(&p,
0778                     igc_gstrings_net_stats[i].stat_string);
0779         for (i = 0; i < adapter->num_tx_queues; i++) {
0780             ethtool_sprintf(&p, "tx_queue_%u_packets", i);
0781             ethtool_sprintf(&p, "tx_queue_%u_bytes", i);
0782             ethtool_sprintf(&p, "tx_queue_%u_restart", i);
0783         }
0784         for (i = 0; i < adapter->num_rx_queues; i++) {
0785             ethtool_sprintf(&p, "rx_queue_%u_packets", i);
0786             ethtool_sprintf(&p, "rx_queue_%u_bytes", i);
0787             ethtool_sprintf(&p, "rx_queue_%u_drops", i);
0788             ethtool_sprintf(&p, "rx_queue_%u_csum_err", i);
0789             ethtool_sprintf(&p, "rx_queue_%u_alloc_failed", i);
0790         }
0791         /* BUG_ON(p - data != IGC_STATS_LEN * ETH_GSTRING_LEN); */
0792         break;
0793     case ETH_SS_PRIV_FLAGS:
0794         memcpy(data, igc_priv_flags_strings,
0795                IGC_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
0796         break;
0797     }
0798 }
0799 
0800 static int igc_ethtool_get_sset_count(struct net_device *netdev, int sset)
0801 {
0802     switch (sset) {
0803     case ETH_SS_STATS:
0804         return IGC_STATS_LEN;
0805     case ETH_SS_TEST:
0806         return IGC_TEST_LEN;
0807     case ETH_SS_PRIV_FLAGS:
0808         return IGC_PRIV_FLAGS_STR_LEN;
0809     default:
0810         return -ENOTSUPP;
0811     }
0812 }
0813 
0814 static void igc_ethtool_get_stats(struct net_device *netdev,
0815                   struct ethtool_stats *stats, u64 *data)
0816 {
0817     struct igc_adapter *adapter = netdev_priv(netdev);
0818     struct rtnl_link_stats64 *net_stats = &adapter->stats64;
0819     unsigned int start;
0820     struct igc_ring *ring;
0821     int i, j;
0822     char *p;
0823 
0824     spin_lock(&adapter->stats64_lock);
0825     igc_update_stats(adapter);
0826 
0827     for (i = 0; i < IGC_GLOBAL_STATS_LEN; i++) {
0828         p = (char *)adapter + igc_gstrings_stats[i].stat_offset;
0829         data[i] = (igc_gstrings_stats[i].sizeof_stat ==
0830             sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
0831     }
0832     for (j = 0; j < IGC_NETDEV_STATS_LEN; j++, i++) {
0833         p = (char *)net_stats + igc_gstrings_net_stats[j].stat_offset;
0834         data[i] = (igc_gstrings_net_stats[j].sizeof_stat ==
0835             sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
0836     }
0837     for (j = 0; j < adapter->num_tx_queues; j++) {
0838         u64 restart2;
0839 
0840         ring = adapter->tx_ring[j];
0841         do {
0842             start = u64_stats_fetch_begin_irq(&ring->tx_syncp);
0843             data[i]   = ring->tx_stats.packets;
0844             data[i + 1] = ring->tx_stats.bytes;
0845             data[i + 2] = ring->tx_stats.restart_queue;
0846         } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start));
0847         do {
0848             start = u64_stats_fetch_begin_irq(&ring->tx_syncp2);
0849             restart2  = ring->tx_stats.restart_queue2;
0850         } while (u64_stats_fetch_retry_irq(&ring->tx_syncp2, start));
0851         data[i + 2] += restart2;
0852 
0853         i += IGC_TX_QUEUE_STATS_LEN;
0854     }
0855     for (j = 0; j < adapter->num_rx_queues; j++) {
0856         ring = adapter->rx_ring[j];
0857         do {
0858             start = u64_stats_fetch_begin_irq(&ring->rx_syncp);
0859             data[i]   = ring->rx_stats.packets;
0860             data[i + 1] = ring->rx_stats.bytes;
0861             data[i + 2] = ring->rx_stats.drops;
0862             data[i + 3] = ring->rx_stats.csum_err;
0863             data[i + 4] = ring->rx_stats.alloc_failed;
0864         } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start));
0865         i += IGC_RX_QUEUE_STATS_LEN;
0866     }
0867     spin_unlock(&adapter->stats64_lock);
0868 }
0869 
0870 static int igc_ethtool_get_coalesce(struct net_device *netdev,
0871                     struct ethtool_coalesce *ec,
0872                     struct kernel_ethtool_coalesce *kernel_coal,
0873                     struct netlink_ext_ack *extack)
0874 {
0875     struct igc_adapter *adapter = netdev_priv(netdev);
0876 
0877     if (adapter->rx_itr_setting <= 3)
0878         ec->rx_coalesce_usecs = adapter->rx_itr_setting;
0879     else
0880         ec->rx_coalesce_usecs = adapter->rx_itr_setting >> 2;
0881 
0882     if (!(adapter->flags & IGC_FLAG_QUEUE_PAIRS)) {
0883         if (adapter->tx_itr_setting <= 3)
0884             ec->tx_coalesce_usecs = adapter->tx_itr_setting;
0885         else
0886             ec->tx_coalesce_usecs = adapter->tx_itr_setting >> 2;
0887     }
0888 
0889     return 0;
0890 }
0891 
0892 static int igc_ethtool_set_coalesce(struct net_device *netdev,
0893                     struct ethtool_coalesce *ec,
0894                     struct kernel_ethtool_coalesce *kernel_coal,
0895                     struct netlink_ext_ack *extack)
0896 {
0897     struct igc_adapter *adapter = netdev_priv(netdev);
0898     int i;
0899 
0900     if (ec->rx_coalesce_usecs > IGC_MAX_ITR_USECS ||
0901         (ec->rx_coalesce_usecs > 3 &&
0902          ec->rx_coalesce_usecs < IGC_MIN_ITR_USECS) ||
0903         ec->rx_coalesce_usecs == 2)
0904         return -EINVAL;
0905 
0906     if (ec->tx_coalesce_usecs > IGC_MAX_ITR_USECS ||
0907         (ec->tx_coalesce_usecs > 3 &&
0908          ec->tx_coalesce_usecs < IGC_MIN_ITR_USECS) ||
0909         ec->tx_coalesce_usecs == 2)
0910         return -EINVAL;
0911 
0912     if ((adapter->flags & IGC_FLAG_QUEUE_PAIRS) && ec->tx_coalesce_usecs)
0913         return -EINVAL;
0914 
0915     /* If ITR is disabled, disable DMAC */
0916     if (ec->rx_coalesce_usecs == 0) {
0917         if (adapter->flags & IGC_FLAG_DMAC)
0918             adapter->flags &= ~IGC_FLAG_DMAC;
0919     }
0920 
0921     /* convert to rate of irq's per second */
0922     if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3)
0923         adapter->rx_itr_setting = ec->rx_coalesce_usecs;
0924     else
0925         adapter->rx_itr_setting = ec->rx_coalesce_usecs << 2;
0926 
0927     /* convert to rate of irq's per second */
0928     if (adapter->flags & IGC_FLAG_QUEUE_PAIRS)
0929         adapter->tx_itr_setting = adapter->rx_itr_setting;
0930     else if (ec->tx_coalesce_usecs && ec->tx_coalesce_usecs <= 3)
0931         adapter->tx_itr_setting = ec->tx_coalesce_usecs;
0932     else
0933         adapter->tx_itr_setting = ec->tx_coalesce_usecs << 2;
0934 
0935     for (i = 0; i < adapter->num_q_vectors; i++) {
0936         struct igc_q_vector *q_vector = adapter->q_vector[i];
0937 
0938         q_vector->tx.work_limit = adapter->tx_work_limit;
0939         if (q_vector->rx.ring)
0940             q_vector->itr_val = adapter->rx_itr_setting;
0941         else
0942             q_vector->itr_val = adapter->tx_itr_setting;
0943         if (q_vector->itr_val && q_vector->itr_val <= 3)
0944             q_vector->itr_val = IGC_START_ITR;
0945         q_vector->set_itr = 1;
0946     }
0947 
0948     return 0;
0949 }
0950 
0951 #define ETHER_TYPE_FULL_MASK ((__force __be16)~0)
0952 static int igc_ethtool_get_nfc_rule(struct igc_adapter *adapter,
0953                     struct ethtool_rxnfc *cmd)
0954 {
0955     struct ethtool_rx_flow_spec *fsp = &cmd->fs;
0956     struct igc_nfc_rule *rule = NULL;
0957 
0958     cmd->data = IGC_MAX_RXNFC_RULES;
0959 
0960     mutex_lock(&adapter->nfc_rule_lock);
0961 
0962     rule = igc_get_nfc_rule(adapter, fsp->location);
0963     if (!rule)
0964         goto out;
0965 
0966     fsp->flow_type = ETHER_FLOW;
0967     fsp->ring_cookie = rule->action;
0968 
0969     if (rule->filter.match_flags & IGC_FILTER_FLAG_ETHER_TYPE) {
0970         fsp->h_u.ether_spec.h_proto = htons(rule->filter.etype);
0971         fsp->m_u.ether_spec.h_proto = ETHER_TYPE_FULL_MASK;
0972     }
0973 
0974     if (rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_TCI) {
0975         fsp->flow_type |= FLOW_EXT;
0976         fsp->h_ext.vlan_tci = htons(rule->filter.vlan_tci);
0977         fsp->m_ext.vlan_tci = htons(VLAN_PRIO_MASK);
0978     }
0979 
0980     if (rule->filter.match_flags & IGC_FILTER_FLAG_DST_MAC_ADDR) {
0981         ether_addr_copy(fsp->h_u.ether_spec.h_dest,
0982                 rule->filter.dst_addr);
0983         eth_broadcast_addr(fsp->m_u.ether_spec.h_dest);
0984     }
0985 
0986     if (rule->filter.match_flags & IGC_FILTER_FLAG_SRC_MAC_ADDR) {
0987         ether_addr_copy(fsp->h_u.ether_spec.h_source,
0988                 rule->filter.src_addr);
0989         eth_broadcast_addr(fsp->m_u.ether_spec.h_source);
0990     }
0991 
0992     if (rule->filter.match_flags & IGC_FILTER_FLAG_USER_DATA) {
0993         fsp->flow_type |= FLOW_EXT;
0994         memcpy(fsp->h_ext.data, rule->filter.user_data, sizeof(fsp->h_ext.data));
0995         memcpy(fsp->m_ext.data, rule->filter.user_mask, sizeof(fsp->m_ext.data));
0996     }
0997 
0998     mutex_unlock(&adapter->nfc_rule_lock);
0999     return 0;
1000 
1001 out:
1002     mutex_unlock(&adapter->nfc_rule_lock);
1003     return -EINVAL;
1004 }
1005 
1006 static int igc_ethtool_get_nfc_rules(struct igc_adapter *adapter,
1007                      struct ethtool_rxnfc *cmd,
1008                      u32 *rule_locs)
1009 {
1010     struct igc_nfc_rule *rule;
1011     int cnt = 0;
1012 
1013     cmd->data = IGC_MAX_RXNFC_RULES;
1014 
1015     mutex_lock(&adapter->nfc_rule_lock);
1016 
1017     list_for_each_entry(rule, &adapter->nfc_rule_list, list) {
1018         if (cnt == cmd->rule_cnt) {
1019             mutex_unlock(&adapter->nfc_rule_lock);
1020             return -EMSGSIZE;
1021         }
1022         rule_locs[cnt] = rule->location;
1023         cnt++;
1024     }
1025 
1026     mutex_unlock(&adapter->nfc_rule_lock);
1027 
1028     cmd->rule_cnt = cnt;
1029 
1030     return 0;
1031 }
1032 
1033 static int igc_ethtool_get_rss_hash_opts(struct igc_adapter *adapter,
1034                      struct ethtool_rxnfc *cmd)
1035 {
1036     cmd->data = 0;
1037 
1038     /* Report default options for RSS on igc */
1039     switch (cmd->flow_type) {
1040     case TCP_V4_FLOW:
1041         cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1042         fallthrough;
1043     case UDP_V4_FLOW:
1044         if (adapter->flags & IGC_FLAG_RSS_FIELD_IPV4_UDP)
1045             cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1046         fallthrough;
1047     case SCTP_V4_FLOW:
1048     case AH_ESP_V4_FLOW:
1049     case AH_V4_FLOW:
1050     case ESP_V4_FLOW:
1051     case IPV4_FLOW:
1052         cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1053         break;
1054     case TCP_V6_FLOW:
1055         cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1056         fallthrough;
1057     case UDP_V6_FLOW:
1058         if (adapter->flags & IGC_FLAG_RSS_FIELD_IPV6_UDP)
1059             cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1060         fallthrough;
1061     case SCTP_V6_FLOW:
1062     case AH_ESP_V6_FLOW:
1063     case AH_V6_FLOW:
1064     case ESP_V6_FLOW:
1065     case IPV6_FLOW:
1066         cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1067         break;
1068     default:
1069         return -EINVAL;
1070     }
1071 
1072     return 0;
1073 }
1074 
1075 static int igc_ethtool_get_rxnfc(struct net_device *dev,
1076                  struct ethtool_rxnfc *cmd, u32 *rule_locs)
1077 {
1078     struct igc_adapter *adapter = netdev_priv(dev);
1079 
1080     switch (cmd->cmd) {
1081     case ETHTOOL_GRXRINGS:
1082         cmd->data = adapter->num_rx_queues;
1083         return 0;
1084     case ETHTOOL_GRXCLSRLCNT:
1085         cmd->rule_cnt = adapter->nfc_rule_count;
1086         return 0;
1087     case ETHTOOL_GRXCLSRULE:
1088         return igc_ethtool_get_nfc_rule(adapter, cmd);
1089     case ETHTOOL_GRXCLSRLALL:
1090         return igc_ethtool_get_nfc_rules(adapter, cmd, rule_locs);
1091     case ETHTOOL_GRXFH:
1092         return igc_ethtool_get_rss_hash_opts(adapter, cmd);
1093     default:
1094         return -EOPNOTSUPP;
1095     }
1096 }
1097 
1098 #define UDP_RSS_FLAGS (IGC_FLAG_RSS_FIELD_IPV4_UDP | \
1099                IGC_FLAG_RSS_FIELD_IPV6_UDP)
1100 static int igc_ethtool_set_rss_hash_opt(struct igc_adapter *adapter,
1101                     struct ethtool_rxnfc *nfc)
1102 {
1103     u32 flags = adapter->flags;
1104 
1105     /* RSS does not support anything other than hashing
1106      * to queues on src and dst IPs and ports
1107      */
1108     if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
1109               RXH_L4_B_0_1 | RXH_L4_B_2_3))
1110         return -EINVAL;
1111 
1112     switch (nfc->flow_type) {
1113     case TCP_V4_FLOW:
1114     case TCP_V6_FLOW:
1115         if (!(nfc->data & RXH_IP_SRC) ||
1116             !(nfc->data & RXH_IP_DST) ||
1117             !(nfc->data & RXH_L4_B_0_1) ||
1118             !(nfc->data & RXH_L4_B_2_3))
1119             return -EINVAL;
1120         break;
1121     case UDP_V4_FLOW:
1122         if (!(nfc->data & RXH_IP_SRC) ||
1123             !(nfc->data & RXH_IP_DST))
1124             return -EINVAL;
1125         switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1126         case 0:
1127             flags &= ~IGC_FLAG_RSS_FIELD_IPV4_UDP;
1128             break;
1129         case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1130             flags |= IGC_FLAG_RSS_FIELD_IPV4_UDP;
1131             break;
1132         default:
1133             return -EINVAL;
1134         }
1135         break;
1136     case UDP_V6_FLOW:
1137         if (!(nfc->data & RXH_IP_SRC) ||
1138             !(nfc->data & RXH_IP_DST))
1139             return -EINVAL;
1140         switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1141         case 0:
1142             flags &= ~IGC_FLAG_RSS_FIELD_IPV6_UDP;
1143             break;
1144         case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1145             flags |= IGC_FLAG_RSS_FIELD_IPV6_UDP;
1146             break;
1147         default:
1148             return -EINVAL;
1149         }
1150         break;
1151     case AH_ESP_V4_FLOW:
1152     case AH_V4_FLOW:
1153     case ESP_V4_FLOW:
1154     case SCTP_V4_FLOW:
1155     case AH_ESP_V6_FLOW:
1156     case AH_V6_FLOW:
1157     case ESP_V6_FLOW:
1158     case SCTP_V6_FLOW:
1159         if (!(nfc->data & RXH_IP_SRC) ||
1160             !(nfc->data & RXH_IP_DST) ||
1161             (nfc->data & RXH_L4_B_0_1) ||
1162             (nfc->data & RXH_L4_B_2_3))
1163             return -EINVAL;
1164         break;
1165     default:
1166         return -EINVAL;
1167     }
1168 
1169     /* if we changed something we need to update flags */
1170     if (flags != adapter->flags) {
1171         struct igc_hw *hw = &adapter->hw;
1172         u32 mrqc = rd32(IGC_MRQC);
1173 
1174         if ((flags & UDP_RSS_FLAGS) &&
1175             !(adapter->flags & UDP_RSS_FLAGS))
1176             netdev_err(adapter->netdev,
1177                    "Enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");
1178 
1179         adapter->flags = flags;
1180 
1181         /* Perform hash on these packet types */
1182         mrqc |= IGC_MRQC_RSS_FIELD_IPV4 |
1183             IGC_MRQC_RSS_FIELD_IPV4_TCP |
1184             IGC_MRQC_RSS_FIELD_IPV6 |
1185             IGC_MRQC_RSS_FIELD_IPV6_TCP;
1186 
1187         mrqc &= ~(IGC_MRQC_RSS_FIELD_IPV4_UDP |
1188               IGC_MRQC_RSS_FIELD_IPV6_UDP);
1189 
1190         if (flags & IGC_FLAG_RSS_FIELD_IPV4_UDP)
1191             mrqc |= IGC_MRQC_RSS_FIELD_IPV4_UDP;
1192 
1193         if (flags & IGC_FLAG_RSS_FIELD_IPV6_UDP)
1194             mrqc |= IGC_MRQC_RSS_FIELD_IPV6_UDP;
1195 
1196         wr32(IGC_MRQC, mrqc);
1197     }
1198 
1199     return 0;
1200 }
1201 
1202 static void igc_ethtool_init_nfc_rule(struct igc_nfc_rule *rule,
1203                       const struct ethtool_rx_flow_spec *fsp)
1204 {
1205     INIT_LIST_HEAD(&rule->list);
1206 
1207     rule->action = fsp->ring_cookie;
1208     rule->location = fsp->location;
1209 
1210     if ((fsp->flow_type & FLOW_EXT) && fsp->m_ext.vlan_tci) {
1211         rule->filter.vlan_tci = ntohs(fsp->h_ext.vlan_tci);
1212         rule->filter.match_flags |= IGC_FILTER_FLAG_VLAN_TCI;
1213     }
1214 
1215     if (fsp->m_u.ether_spec.h_proto == ETHER_TYPE_FULL_MASK) {
1216         rule->filter.etype = ntohs(fsp->h_u.ether_spec.h_proto);
1217         rule->filter.match_flags = IGC_FILTER_FLAG_ETHER_TYPE;
1218     }
1219 
1220     /* Both source and destination address filters only support the full
1221      * mask.
1222      */
1223     if (is_broadcast_ether_addr(fsp->m_u.ether_spec.h_source)) {
1224         rule->filter.match_flags |= IGC_FILTER_FLAG_SRC_MAC_ADDR;
1225         ether_addr_copy(rule->filter.src_addr,
1226                 fsp->h_u.ether_spec.h_source);
1227     }
1228 
1229     if (is_broadcast_ether_addr(fsp->m_u.ether_spec.h_dest)) {
1230         rule->filter.match_flags |= IGC_FILTER_FLAG_DST_MAC_ADDR;
1231         ether_addr_copy(rule->filter.dst_addr,
1232                 fsp->h_u.ether_spec.h_dest);
1233     }
1234 
1235     /* VLAN etype matching */
1236     if ((fsp->flow_type & FLOW_EXT) && fsp->h_ext.vlan_etype) {
1237         rule->filter.vlan_etype = fsp->h_ext.vlan_etype;
1238         rule->filter.match_flags |= IGC_FILTER_FLAG_VLAN_ETYPE;
1239     }
1240 
1241     /* Check for user defined data */
1242     if ((fsp->flow_type & FLOW_EXT) &&
1243         (fsp->h_ext.data[0] || fsp->h_ext.data[1])) {
1244         rule->filter.match_flags |= IGC_FILTER_FLAG_USER_DATA;
1245         memcpy(rule->filter.user_data, fsp->h_ext.data, sizeof(fsp->h_ext.data));
1246         memcpy(rule->filter.user_mask, fsp->m_ext.data, sizeof(fsp->m_ext.data));
1247     }
1248 
1249     /* When multiple filter options or user data or vlan etype is set, use a
1250      * flex filter.
1251      */
1252     if ((rule->filter.match_flags & IGC_FILTER_FLAG_USER_DATA) ||
1253         (rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_ETYPE) ||
1254         (rule->filter.match_flags & (rule->filter.match_flags - 1)))
1255         rule->flex = true;
1256     else
1257         rule->flex = false;
1258 }
1259 
1260 /**
1261  * igc_ethtool_check_nfc_rule() - Check if NFC rule is valid
1262  * @adapter: Pointer to adapter
1263  * @rule: Rule under evaluation
1264  *
1265  * The driver doesn't support rules with multiple matches so if more than
1266  * one bit in filter flags is set, @rule is considered invalid.
1267  *
1268  * Also, if there is already another rule with the same filter in a different
1269  * location, @rule is considered invalid.
1270  *
1271  * Context: Expects adapter->nfc_rule_lock to be held by caller.
1272  *
1273  * Return: 0 in case of success, negative errno code otherwise.
1274  */
1275 static int igc_ethtool_check_nfc_rule(struct igc_adapter *adapter,
1276                       struct igc_nfc_rule *rule)
1277 {
1278     struct net_device *dev = adapter->netdev;
1279     u8 flags = rule->filter.match_flags;
1280     struct igc_nfc_rule *tmp;
1281 
1282     if (!flags) {
1283         netdev_dbg(dev, "Rule with no match\n");
1284         return -EINVAL;
1285     }
1286 
1287     list_for_each_entry(tmp, &adapter->nfc_rule_list, list) {
1288         if (!memcmp(&rule->filter, &tmp->filter,
1289                 sizeof(rule->filter)) &&
1290             tmp->location != rule->location) {
1291             netdev_dbg(dev, "Rule already exists\n");
1292             return -EEXIST;
1293         }
1294     }
1295 
1296     return 0;
1297 }
1298 
1299 static int igc_ethtool_add_nfc_rule(struct igc_adapter *adapter,
1300                     struct ethtool_rxnfc *cmd)
1301 {
1302     struct net_device *netdev = adapter->netdev;
1303     struct ethtool_rx_flow_spec *fsp =
1304         (struct ethtool_rx_flow_spec *)&cmd->fs;
1305     struct igc_nfc_rule *rule, *old_rule;
1306     int err;
1307 
1308     if (!(netdev->hw_features & NETIF_F_NTUPLE)) {
1309         netdev_dbg(netdev, "N-tuple filters disabled\n");
1310         return -EOPNOTSUPP;
1311     }
1312 
1313     if ((fsp->flow_type & ~FLOW_EXT) != ETHER_FLOW) {
1314         netdev_dbg(netdev, "Only ethernet flow type is supported\n");
1315         return -EOPNOTSUPP;
1316     }
1317 
1318     if (fsp->ring_cookie >= adapter->num_rx_queues) {
1319         netdev_dbg(netdev, "Invalid action\n");
1320         return -EINVAL;
1321     }
1322 
1323     if (fsp->location >= IGC_MAX_RXNFC_RULES) {
1324         netdev_dbg(netdev, "Invalid location\n");
1325         return -EINVAL;
1326     }
1327 
1328     rule = kzalloc(sizeof(*rule), GFP_KERNEL);
1329     if (!rule)
1330         return -ENOMEM;
1331 
1332     igc_ethtool_init_nfc_rule(rule, fsp);
1333 
1334     mutex_lock(&adapter->nfc_rule_lock);
1335 
1336     err = igc_ethtool_check_nfc_rule(adapter, rule);
1337     if (err)
1338         goto err;
1339 
1340     old_rule = igc_get_nfc_rule(adapter, fsp->location);
1341     if (old_rule)
1342         igc_del_nfc_rule(adapter, old_rule);
1343 
1344     err = igc_add_nfc_rule(adapter, rule);
1345     if (err)
1346         goto err;
1347 
1348     mutex_unlock(&adapter->nfc_rule_lock);
1349     return 0;
1350 
1351 err:
1352     mutex_unlock(&adapter->nfc_rule_lock);
1353     kfree(rule);
1354     return err;
1355 }
1356 
1357 static int igc_ethtool_del_nfc_rule(struct igc_adapter *adapter,
1358                     struct ethtool_rxnfc *cmd)
1359 {
1360     struct ethtool_rx_flow_spec *fsp =
1361         (struct ethtool_rx_flow_spec *)&cmd->fs;
1362     struct igc_nfc_rule *rule;
1363 
1364     mutex_lock(&adapter->nfc_rule_lock);
1365 
1366     rule = igc_get_nfc_rule(adapter, fsp->location);
1367     if (!rule) {
1368         mutex_unlock(&adapter->nfc_rule_lock);
1369         return -EINVAL;
1370     }
1371 
1372     igc_del_nfc_rule(adapter, rule);
1373 
1374     mutex_unlock(&adapter->nfc_rule_lock);
1375     return 0;
1376 }
1377 
1378 static int igc_ethtool_set_rxnfc(struct net_device *dev,
1379                  struct ethtool_rxnfc *cmd)
1380 {
1381     struct igc_adapter *adapter = netdev_priv(dev);
1382 
1383     switch (cmd->cmd) {
1384     case ETHTOOL_SRXFH:
1385         return igc_ethtool_set_rss_hash_opt(adapter, cmd);
1386     case ETHTOOL_SRXCLSRLINS:
1387         return igc_ethtool_add_nfc_rule(adapter, cmd);
1388     case ETHTOOL_SRXCLSRLDEL:
1389         return igc_ethtool_del_nfc_rule(adapter, cmd);
1390     default:
1391         return -EOPNOTSUPP;
1392     }
1393 }
1394 
1395 void igc_write_rss_indir_tbl(struct igc_adapter *adapter)
1396 {
1397     struct igc_hw *hw = &adapter->hw;
1398     u32 reg = IGC_RETA(0);
1399     u32 shift = 0;
1400     int i = 0;
1401 
1402     while (i < IGC_RETA_SIZE) {
1403         u32 val = 0;
1404         int j;
1405 
1406         for (j = 3; j >= 0; j--) {
1407             val <<= 8;
1408             val |= adapter->rss_indir_tbl[i + j];
1409         }
1410 
1411         wr32(reg, val << shift);
1412         reg += 4;
1413         i += 4;
1414     }
1415 }
1416 
1417 static u32 igc_ethtool_get_rxfh_indir_size(struct net_device *netdev)
1418 {
1419     return IGC_RETA_SIZE;
1420 }
1421 
1422 static int igc_ethtool_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
1423                 u8 *hfunc)
1424 {
1425     struct igc_adapter *adapter = netdev_priv(netdev);
1426     int i;
1427 
1428     if (hfunc)
1429         *hfunc = ETH_RSS_HASH_TOP;
1430     if (!indir)
1431         return 0;
1432     for (i = 0; i < IGC_RETA_SIZE; i++)
1433         indir[i] = adapter->rss_indir_tbl[i];
1434 
1435     return 0;
1436 }
1437 
1438 static int igc_ethtool_set_rxfh(struct net_device *netdev, const u32 *indir,
1439                 const u8 *key, const u8 hfunc)
1440 {
1441     struct igc_adapter *adapter = netdev_priv(netdev);
1442     u32 num_queues;
1443     int i;
1444 
1445     /* We do not allow change in unsupported parameters */
1446     if (key ||
1447         (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
1448         return -EOPNOTSUPP;
1449     if (!indir)
1450         return 0;
1451 
1452     num_queues = adapter->rss_queues;
1453 
1454     /* Verify user input. */
1455     for (i = 0; i < IGC_RETA_SIZE; i++)
1456         if (indir[i] >= num_queues)
1457             return -EINVAL;
1458 
1459     for (i = 0; i < IGC_RETA_SIZE; i++)
1460         adapter->rss_indir_tbl[i] = indir[i];
1461 
1462     igc_write_rss_indir_tbl(adapter);
1463 
1464     return 0;
1465 }
1466 
1467 static void igc_ethtool_get_channels(struct net_device *netdev,
1468                      struct ethtool_channels *ch)
1469 {
1470     struct igc_adapter *adapter = netdev_priv(netdev);
1471 
1472     /* Report maximum channels */
1473     ch->max_combined = igc_get_max_rss_queues(adapter);
1474 
1475     /* Report info for other vector */
1476     if (adapter->flags & IGC_FLAG_HAS_MSIX) {
1477         ch->max_other = NON_Q_VECTORS;
1478         ch->other_count = NON_Q_VECTORS;
1479     }
1480 
1481     ch->combined_count = adapter->rss_queues;
1482 }
1483 
1484 static int igc_ethtool_set_channels(struct net_device *netdev,
1485                     struct ethtool_channels *ch)
1486 {
1487     struct igc_adapter *adapter = netdev_priv(netdev);
1488     unsigned int count = ch->combined_count;
1489     unsigned int max_combined = 0;
1490 
1491     /* Verify they are not requesting separate vectors */
1492     if (!count || ch->rx_count || ch->tx_count)
1493         return -EINVAL;
1494 
1495     /* Verify other_count is valid and has not been changed */
1496     if (ch->other_count != NON_Q_VECTORS)
1497         return -EINVAL;
1498 
1499     /* Verify the number of channels doesn't exceed hw limits */
1500     max_combined = igc_get_max_rss_queues(adapter);
1501     if (count > max_combined)
1502         return -EINVAL;
1503 
1504     if (count != adapter->rss_queues) {
1505         adapter->rss_queues = count;
1506         igc_set_flag_queue_pairs(adapter, max_combined);
1507 
1508         /* Hardware has to reinitialize queues and interrupts to
1509          * match the new configuration.
1510          */
1511         return igc_reinit_queues(adapter);
1512     }
1513 
1514     return 0;
1515 }
1516 
1517 static int igc_ethtool_get_ts_info(struct net_device *dev,
1518                    struct ethtool_ts_info *info)
1519 {
1520     struct igc_adapter *adapter = netdev_priv(dev);
1521 
1522     if (adapter->ptp_clock)
1523         info->phc_index = ptp_clock_index(adapter->ptp_clock);
1524     else
1525         info->phc_index = -1;
1526 
1527     switch (adapter->hw.mac.type) {
1528     case igc_i225:
1529         info->so_timestamping =
1530             SOF_TIMESTAMPING_TX_SOFTWARE |
1531             SOF_TIMESTAMPING_RX_SOFTWARE |
1532             SOF_TIMESTAMPING_SOFTWARE |
1533             SOF_TIMESTAMPING_TX_HARDWARE |
1534             SOF_TIMESTAMPING_RX_HARDWARE |
1535             SOF_TIMESTAMPING_RAW_HARDWARE;
1536 
1537         info->tx_types =
1538             BIT(HWTSTAMP_TX_OFF) |
1539             BIT(HWTSTAMP_TX_ON);
1540 
1541         info->rx_filters = BIT(HWTSTAMP_FILTER_NONE);
1542         info->rx_filters |= BIT(HWTSTAMP_FILTER_ALL);
1543 
1544         return 0;
1545     default:
1546         return -EOPNOTSUPP;
1547     }
1548 }
1549 
1550 static u32 igc_ethtool_get_priv_flags(struct net_device *netdev)
1551 {
1552     struct igc_adapter *adapter = netdev_priv(netdev);
1553     u32 priv_flags = 0;
1554 
1555     if (adapter->flags & IGC_FLAG_RX_LEGACY)
1556         priv_flags |= IGC_PRIV_FLAGS_LEGACY_RX;
1557 
1558     return priv_flags;
1559 }
1560 
1561 static int igc_ethtool_set_priv_flags(struct net_device *netdev, u32 priv_flags)
1562 {
1563     struct igc_adapter *adapter = netdev_priv(netdev);
1564     unsigned int flags = adapter->flags;
1565 
1566     flags &= ~IGC_FLAG_RX_LEGACY;
1567     if (priv_flags & IGC_PRIV_FLAGS_LEGACY_RX)
1568         flags |= IGC_FLAG_RX_LEGACY;
1569 
1570     if (flags != adapter->flags) {
1571         adapter->flags = flags;
1572 
1573         /* reset interface to repopulate queues */
1574         if (netif_running(netdev))
1575             igc_reinit_locked(adapter);
1576     }
1577 
1578     return 0;
1579 }
1580 
1581 static int igc_ethtool_get_eee(struct net_device *netdev,
1582                    struct ethtool_eee *edata)
1583 {
1584     struct igc_adapter *adapter = netdev_priv(netdev);
1585     struct igc_hw *hw = &adapter->hw;
1586     u32 eeer;
1587 
1588     if (hw->dev_spec._base.eee_enable)
1589         edata->advertised =
1590             mmd_eee_adv_to_ethtool_adv_t(adapter->eee_advert);
1591 
1592     *edata = adapter->eee;
1593     edata->supported = SUPPORTED_Autoneg;
1594 
1595     eeer = rd32(IGC_EEER);
1596 
1597     /* EEE status on negotiated link */
1598     if (eeer & IGC_EEER_EEE_NEG)
1599         edata->eee_active = true;
1600 
1601     if (eeer & IGC_EEER_TX_LPI_EN)
1602         edata->tx_lpi_enabled = true;
1603 
1604     edata->eee_enabled = hw->dev_spec._base.eee_enable;
1605 
1606     edata->advertised = SUPPORTED_Autoneg;
1607     edata->lp_advertised = SUPPORTED_Autoneg;
1608 
1609     /* Report correct negotiated EEE status for devices that
1610      * wrongly report EEE at half-duplex
1611      */
1612     if (adapter->link_duplex == HALF_DUPLEX) {
1613         edata->eee_enabled = false;
1614         edata->eee_active = false;
1615         edata->tx_lpi_enabled = false;
1616         edata->advertised &= ~edata->advertised;
1617     }
1618 
1619     return 0;
1620 }
1621 
1622 static int igc_ethtool_set_eee(struct net_device *netdev,
1623                    struct ethtool_eee *edata)
1624 {
1625     struct igc_adapter *adapter = netdev_priv(netdev);
1626     struct igc_hw *hw = &adapter->hw;
1627     struct ethtool_eee eee_curr;
1628     s32 ret_val;
1629 
1630     memset(&eee_curr, 0, sizeof(struct ethtool_eee));
1631 
1632     ret_val = igc_ethtool_get_eee(netdev, &eee_curr);
1633     if (ret_val) {
1634         netdev_err(netdev,
1635                "Problem setting EEE advertisement options\n");
1636         return -EINVAL;
1637     }
1638 
1639     if (eee_curr.eee_enabled) {
1640         if (eee_curr.tx_lpi_enabled != edata->tx_lpi_enabled) {
1641             netdev_err(netdev,
1642                    "Setting EEE tx-lpi is not supported\n");
1643             return -EINVAL;
1644         }
1645 
1646         /* Tx LPI timer is not implemented currently */
1647         if (edata->tx_lpi_timer) {
1648             netdev_err(netdev,
1649                    "Setting EEE Tx LPI timer is not supported\n");
1650             return -EINVAL;
1651         }
1652     } else if (!edata->eee_enabled) {
1653         netdev_err(netdev,
1654                "Setting EEE options are not supported with EEE disabled\n");
1655         return -EINVAL;
1656     }
1657 
1658     adapter->eee_advert = ethtool_adv_to_mmd_eee_adv_t(edata->advertised);
1659     if (hw->dev_spec._base.eee_enable != edata->eee_enabled) {
1660         hw->dev_spec._base.eee_enable = edata->eee_enabled;
1661         adapter->flags |= IGC_FLAG_EEE;
1662 
1663         /* reset link */
1664         if (netif_running(netdev))
1665             igc_reinit_locked(adapter);
1666         else
1667             igc_reset(adapter);
1668     }
1669 
1670     return 0;
1671 }
1672 
1673 static int igc_ethtool_begin(struct net_device *netdev)
1674 {
1675     struct igc_adapter *adapter = netdev_priv(netdev);
1676 
1677     pm_runtime_get_sync(&adapter->pdev->dev);
1678     return 0;
1679 }
1680 
1681 static void igc_ethtool_complete(struct net_device *netdev)
1682 {
1683     struct igc_adapter *adapter = netdev_priv(netdev);
1684 
1685     pm_runtime_put(&adapter->pdev->dev);
1686 }
1687 
1688 static int igc_ethtool_get_link_ksettings(struct net_device *netdev,
1689                       struct ethtool_link_ksettings *cmd)
1690 {
1691     struct igc_adapter *adapter = netdev_priv(netdev);
1692     struct igc_hw *hw = &adapter->hw;
1693     u32 status;
1694     u32 speed;
1695 
1696     ethtool_link_ksettings_zero_link_mode(cmd, supported);
1697     ethtool_link_ksettings_zero_link_mode(cmd, advertising);
1698 
1699     /* supported link modes */
1700     ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
1701     ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Full);
1702     ethtool_link_ksettings_add_link_mode(cmd, supported, 100baseT_Half);
1703     ethtool_link_ksettings_add_link_mode(cmd, supported, 100baseT_Full);
1704     ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full);
1705     ethtool_link_ksettings_add_link_mode(cmd, supported, 2500baseT_Full);
1706 
1707     /* twisted pair */
1708     cmd->base.port = PORT_TP;
1709     cmd->base.phy_address = hw->phy.addr;
1710 
1711     /* advertising link modes */
1712     if (hw->phy.autoneg_advertised & ADVERTISE_10_HALF)
1713         ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half);
1714     if (hw->phy.autoneg_advertised & ADVERTISE_10_FULL)
1715         ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Full);
1716     if (hw->phy.autoneg_advertised & ADVERTISE_100_HALF)
1717         ethtool_link_ksettings_add_link_mode(cmd, advertising, 100baseT_Half);
1718     if (hw->phy.autoneg_advertised & ADVERTISE_100_FULL)
1719         ethtool_link_ksettings_add_link_mode(cmd, advertising, 100baseT_Full);
1720     if (hw->phy.autoneg_advertised & ADVERTISE_1000_FULL)
1721         ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full);
1722     if (hw->phy.autoneg_advertised & ADVERTISE_2500_FULL)
1723         ethtool_link_ksettings_add_link_mode(cmd, advertising, 2500baseT_Full);
1724 
1725     /* set autoneg settings */
1726     if (hw->mac.autoneg == 1) {
1727         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
1728         ethtool_link_ksettings_add_link_mode(cmd, advertising,
1729                              Autoneg);
1730     }
1731 
1732     /* Set pause flow control settings */
1733     ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
1734 
1735     switch (hw->fc.requested_mode) {
1736     case igc_fc_full:
1737         ethtool_link_ksettings_add_link_mode(cmd, advertising, Pause);
1738         break;
1739     case igc_fc_rx_pause:
1740         ethtool_link_ksettings_add_link_mode(cmd, advertising, Pause);
1741         ethtool_link_ksettings_add_link_mode(cmd, advertising,
1742                              Asym_Pause);
1743         break;
1744     case igc_fc_tx_pause:
1745         ethtool_link_ksettings_add_link_mode(cmd, advertising,
1746                              Asym_Pause);
1747         break;
1748     default:
1749         break;
1750     }
1751 
1752     status = pm_runtime_suspended(&adapter->pdev->dev) ?
1753          0 : rd32(IGC_STATUS);
1754 
1755     if (status & IGC_STATUS_LU) {
1756         if (status & IGC_STATUS_SPEED_1000) {
1757             /* For I225, STATUS will indicate 1G speed in both
1758              * 1 Gbps and 2.5 Gbps link modes.
1759              * An additional bit is used
1760              * to differentiate between 1 Gbps and 2.5 Gbps.
1761              */
1762             if (hw->mac.type == igc_i225 &&
1763                 (status & IGC_STATUS_SPEED_2500)) {
1764                 speed = SPEED_2500;
1765             } else {
1766                 speed = SPEED_1000;
1767             }
1768         } else if (status & IGC_STATUS_SPEED_100) {
1769             speed = SPEED_100;
1770         } else {
1771             speed = SPEED_10;
1772         }
1773         if ((status & IGC_STATUS_FD) ||
1774             hw->phy.media_type != igc_media_type_copper)
1775             cmd->base.duplex = DUPLEX_FULL;
1776         else
1777             cmd->base.duplex = DUPLEX_HALF;
1778     } else {
1779         speed = SPEED_UNKNOWN;
1780         cmd->base.duplex = DUPLEX_UNKNOWN;
1781     }
1782     cmd->base.speed = speed;
1783     if (hw->mac.autoneg)
1784         cmd->base.autoneg = AUTONEG_ENABLE;
1785     else
1786         cmd->base.autoneg = AUTONEG_DISABLE;
1787 
1788     /* MDI-X => 2; MDI =>1; Invalid =>0 */
1789     if (hw->phy.media_type == igc_media_type_copper)
1790         cmd->base.eth_tp_mdix = hw->phy.is_mdix ? ETH_TP_MDI_X :
1791                               ETH_TP_MDI;
1792     else
1793         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
1794 
1795     if (hw->phy.mdix == AUTO_ALL_MODES)
1796         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
1797     else
1798         cmd->base.eth_tp_mdix_ctrl = hw->phy.mdix;
1799 
1800     return 0;
1801 }
1802 
1803 static int
1804 igc_ethtool_set_link_ksettings(struct net_device *netdev,
1805                    const struct ethtool_link_ksettings *cmd)
1806 {
1807     struct igc_adapter *adapter = netdev_priv(netdev);
1808     struct net_device *dev = adapter->netdev;
1809     struct igc_hw *hw = &adapter->hw;
1810     u32 advertising;
1811 
1812     /* When adapter in resetting mode, autoneg/speed/duplex
1813      * cannot be changed
1814      */
1815     if (igc_check_reset_block(hw)) {
1816         netdev_err(dev, "Cannot change link characteristics when reset is active\n");
1817         return -EINVAL;
1818     }
1819 
1820     /* MDI setting is only allowed when autoneg enabled because
1821      * some hardware doesn't allow MDI setting when speed or
1822      * duplex is forced.
1823      */
1824     if (cmd->base.eth_tp_mdix_ctrl) {
1825         if (cmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO &&
1826             cmd->base.autoneg != AUTONEG_ENABLE) {
1827             netdev_err(dev, "Forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n");
1828             return -EINVAL;
1829         }
1830     }
1831 
1832     while (test_and_set_bit(__IGC_RESETTING, &adapter->state))
1833         usleep_range(1000, 2000);
1834 
1835     ethtool_convert_link_mode_to_legacy_u32(&advertising,
1836                         cmd->link_modes.advertising);
1837     /* Converting to legacy u32 drops ETHTOOL_LINK_MODE_2500baseT_Full_BIT.
1838      * We have to check this and convert it to ADVERTISE_2500_FULL
1839      * (aka ETHTOOL_LINK_MODE_2500baseX_Full_BIT) explicitly.
1840      */
1841     if (ethtool_link_ksettings_test_link_mode(cmd, advertising, 2500baseT_Full))
1842         advertising |= ADVERTISE_2500_FULL;
1843 
1844     if (cmd->base.autoneg == AUTONEG_ENABLE) {
1845         hw->mac.autoneg = 1;
1846         hw->phy.autoneg_advertised = advertising;
1847         if (adapter->fc_autoneg)
1848             hw->fc.requested_mode = igc_fc_default;
1849     } else {
1850         netdev_info(dev, "Force mode currently not supported\n");
1851     }
1852 
1853     /* MDI-X => 2; MDI => 1; Auto => 3 */
1854     if (cmd->base.eth_tp_mdix_ctrl) {
1855         /* fix up the value for auto (3 => 0) as zero is mapped
1856          * internally to auto
1857          */
1858         if (cmd->base.eth_tp_mdix_ctrl == ETH_TP_MDI_AUTO)
1859             hw->phy.mdix = AUTO_ALL_MODES;
1860         else
1861             hw->phy.mdix = cmd->base.eth_tp_mdix_ctrl;
1862     }
1863 
1864     /* reset the link */
1865     if (netif_running(adapter->netdev)) {
1866         igc_down(adapter);
1867         igc_up(adapter);
1868     } else {
1869         igc_reset(adapter);
1870     }
1871 
1872     clear_bit(__IGC_RESETTING, &adapter->state);
1873 
1874     return 0;
1875 }
1876 
1877 static void igc_ethtool_diag_test(struct net_device *netdev,
1878                   struct ethtool_test *eth_test, u64 *data)
1879 {
1880     struct igc_adapter *adapter = netdev_priv(netdev);
1881     bool if_running = netif_running(netdev);
1882 
1883     if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
1884         netdev_info(adapter->netdev, "Offline testing starting");
1885         set_bit(__IGC_TESTING, &adapter->state);
1886 
1887         /* Link test performed before hardware reset so autoneg doesn't
1888          * interfere with test result
1889          */
1890         if (!igc_link_test(adapter, &data[TEST_LINK]))
1891             eth_test->flags |= ETH_TEST_FL_FAILED;
1892 
1893         if (if_running)
1894             igc_close(netdev);
1895         else
1896             igc_reset(adapter);
1897 
1898         netdev_info(adapter->netdev, "Register testing starting");
1899         if (!igc_reg_test(adapter, &data[TEST_REG]))
1900             eth_test->flags |= ETH_TEST_FL_FAILED;
1901 
1902         igc_reset(adapter);
1903 
1904         netdev_info(adapter->netdev, "EEPROM testing starting");
1905         if (!igc_eeprom_test(adapter, &data[TEST_EEP]))
1906             eth_test->flags |= ETH_TEST_FL_FAILED;
1907 
1908         igc_reset(adapter);
1909 
1910         /* loopback and interrupt tests
1911          * will be implemented in the future
1912          */
1913         data[TEST_LOOP] = 0;
1914         data[TEST_IRQ] = 0;
1915 
1916         clear_bit(__IGC_TESTING, &adapter->state);
1917         if (if_running)
1918             igc_open(netdev);
1919     } else {
1920         netdev_info(adapter->netdev, "Online testing starting");
1921 
1922         /* register, eeprom, intr and loopback tests not run online */
1923         data[TEST_REG] = 0;
1924         data[TEST_EEP] = 0;
1925         data[TEST_IRQ] = 0;
1926         data[TEST_LOOP] = 0;
1927 
1928         if (!igc_link_test(adapter, &data[TEST_LINK]))
1929             eth_test->flags |= ETH_TEST_FL_FAILED;
1930     }
1931 
1932     msleep_interruptible(4 * 1000);
1933 }
1934 
1935 static const struct ethtool_ops igc_ethtool_ops = {
1936     .supported_coalesce_params = ETHTOOL_COALESCE_USECS,
1937     .get_drvinfo        = igc_ethtool_get_drvinfo,
1938     .get_regs_len       = igc_ethtool_get_regs_len,
1939     .get_regs       = igc_ethtool_get_regs,
1940     .get_wol        = igc_ethtool_get_wol,
1941     .set_wol        = igc_ethtool_set_wol,
1942     .get_msglevel       = igc_ethtool_get_msglevel,
1943     .set_msglevel       = igc_ethtool_set_msglevel,
1944     .nway_reset     = igc_ethtool_nway_reset,
1945     .get_link       = igc_ethtool_get_link,
1946     .get_eeprom_len     = igc_ethtool_get_eeprom_len,
1947     .get_eeprom     = igc_ethtool_get_eeprom,
1948     .set_eeprom     = igc_ethtool_set_eeprom,
1949     .get_ringparam      = igc_ethtool_get_ringparam,
1950     .set_ringparam      = igc_ethtool_set_ringparam,
1951     .get_pauseparam     = igc_ethtool_get_pauseparam,
1952     .set_pauseparam     = igc_ethtool_set_pauseparam,
1953     .get_strings        = igc_ethtool_get_strings,
1954     .get_sset_count     = igc_ethtool_get_sset_count,
1955     .get_ethtool_stats  = igc_ethtool_get_stats,
1956     .get_coalesce       = igc_ethtool_get_coalesce,
1957     .set_coalesce       = igc_ethtool_set_coalesce,
1958     .get_rxnfc      = igc_ethtool_get_rxnfc,
1959     .set_rxnfc      = igc_ethtool_set_rxnfc,
1960     .get_rxfh_indir_size    = igc_ethtool_get_rxfh_indir_size,
1961     .get_rxfh       = igc_ethtool_get_rxfh,
1962     .set_rxfh       = igc_ethtool_set_rxfh,
1963     .get_ts_info        = igc_ethtool_get_ts_info,
1964     .get_channels       = igc_ethtool_get_channels,
1965     .set_channels       = igc_ethtool_set_channels,
1966     .get_priv_flags     = igc_ethtool_get_priv_flags,
1967     .set_priv_flags     = igc_ethtool_set_priv_flags,
1968     .get_eee        = igc_ethtool_get_eee,
1969     .set_eee        = igc_ethtool_set_eee,
1970     .begin          = igc_ethtool_begin,
1971     .complete       = igc_ethtool_complete,
1972     .get_link_ksettings = igc_ethtool_get_link_ksettings,
1973     .set_link_ksettings = igc_ethtool_set_link_ksettings,
1974     .self_test      = igc_ethtool_diag_test,
1975 };
1976 
1977 void igc_ethtool_set_ops(struct net_device *netdev)
1978 {
1979     netdev->ethtool_ops = &igc_ethtool_ops;
1980 }
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