drivers/net/ethernet/intel/i40e/i40e_ethtool.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* ethtool support for i40e */
  28
  29 #include "i40e.h"
  30 #include "i40e_diag.h"
  31
  32 struct i40e_stats {
  33         char stat_string[ETH_GSTRING_LEN];
  34         int sizeof_stat;
  35         int stat_offset;
  36 };
  37
  38 #define I40E_STAT(_type, _name, _stat) { \
  39         .stat_string = _name, \
  40         .sizeof_stat = FIELD_SIZEOF(_type, _stat), \
  41         .stat_offset = offsetof(_type, _stat) \
  42 }
  43
  44 #define I40E_NETDEV_STAT(_net_stat) \
  45                 I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
  46 #define I40E_PF_STAT(_name, _stat) \
  47                 I40E_STAT(struct i40e_pf, _name, _stat)
  48 #define I40E_VSI_STAT(_name, _stat) \
  49                 I40E_STAT(struct i40e_vsi, _name, _stat)
  50 #define I40E_VEB_STAT(_name, _stat) \
  51                 I40E_STAT(struct i40e_veb, _name, _stat)
  52
  53 static const struct i40e_stats i40e_gstrings_net_stats[] = {
  54         I40E_NETDEV_STAT(rx_packets),
  55         I40E_NETDEV_STAT(tx_packets),
  56         I40E_NETDEV_STAT(rx_bytes),
  57         I40E_NETDEV_STAT(tx_bytes),
  58         I40E_NETDEV_STAT(rx_errors),
  59         I40E_NETDEV_STAT(tx_errors),
  60         I40E_NETDEV_STAT(rx_dropped),
  61         I40E_NETDEV_STAT(tx_dropped),
  62         I40E_NETDEV_STAT(collisions),
  63         I40E_NETDEV_STAT(rx_length_errors),
  64         I40E_NETDEV_STAT(rx_crc_errors),
  65 };
  66
  67 static const struct i40e_stats i40e_gstrings_veb_stats[] = {
  68         I40E_VEB_STAT("rx_bytes", stats.rx_bytes),
  69         I40E_VEB_STAT("tx_bytes", stats.tx_bytes),
  70         I40E_VEB_STAT("rx_unicast", stats.rx_unicast),
  71         I40E_VEB_STAT("tx_unicast", stats.tx_unicast),
  72         I40E_VEB_STAT("rx_multicast", stats.rx_multicast),
  73         I40E_VEB_STAT("tx_multicast", stats.tx_multicast),
  74         I40E_VEB_STAT("rx_broadcast", stats.rx_broadcast),
  75         I40E_VEB_STAT("tx_broadcast", stats.tx_broadcast),
  76         I40E_VEB_STAT("rx_discards", stats.rx_discards),
  77         I40E_VEB_STAT("tx_discards", stats.tx_discards),
  78         I40E_VEB_STAT("tx_errors", stats.tx_errors),
  79         I40E_VEB_STAT("rx_unknown_protocol", stats.rx_unknown_protocol),
  80 };
  81
  82 static const struct i40e_stats i40e_gstrings_misc_stats[] = {
  83         I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
  84         I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
  85         I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
  86         I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
  87         I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
  88         I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
  89         I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
  90         I40E_VSI_STAT("tx_linearize", tx_linearize),
  91         I40E_VSI_STAT("tx_force_wb", tx_force_wb),
  92         I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
  93         I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
  94 };
  95
  96 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
  97  * but they are separate.  This device supports Virtualization, and
  98  * as such might have several netdevs supporting VMDq and FCoE going
  99  * through a single port.  The NETDEV_STATs are for individual netdevs
 100  * seen at the top of the stack, and the PF_STATs are for the physical
 101  * function at the bottom of the stack hosting those netdevs.
 102  *
 103  * The PF_STATs are appended to the netdev stats only when ethtool -S
 104  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
 105  */
 106 static const struct i40e_stats i40e_gstrings_stats[] = {
 107         I40E_PF_STAT("rx_bytes", stats.eth.rx_bytes),
 108         I40E_PF_STAT("tx_bytes", stats.eth.tx_bytes),
 109         I40E_PF_STAT("rx_unicast", stats.eth.rx_unicast),
 110         I40E_PF_STAT("tx_unicast", stats.eth.tx_unicast),
 111         I40E_PF_STAT("rx_multicast", stats.eth.rx_multicast),
 112         I40E_PF_STAT("tx_multicast", stats.eth.tx_multicast),
 113         I40E_PF_STAT("rx_broadcast", stats.eth.rx_broadcast),
 114         I40E_PF_STAT("tx_broadcast", stats.eth.tx_broadcast),
 115         I40E_PF_STAT("tx_errors", stats.eth.tx_errors),
 116         I40E_PF_STAT("rx_dropped", stats.eth.rx_discards),
 117         I40E_PF_STAT("tx_dropped_link_down", stats.tx_dropped_link_down),
 118         I40E_PF_STAT("rx_crc_errors", stats.crc_errors),
 119         I40E_PF_STAT("illegal_bytes", stats.illegal_bytes),
 120         I40E_PF_STAT("mac_local_faults", stats.mac_local_faults),
 121         I40E_PF_STAT("mac_remote_faults", stats.mac_remote_faults),
 122         I40E_PF_STAT("tx_timeout", tx_timeout_count),
 123         I40E_PF_STAT("rx_csum_bad", hw_csum_rx_error),
 124         I40E_PF_STAT("rx_length_errors", stats.rx_length_errors),
 125         I40E_PF_STAT("link_xon_rx", stats.link_xon_rx),
 126         I40E_PF_STAT("link_xoff_rx", stats.link_xoff_rx),
 127         I40E_PF_STAT("link_xon_tx", stats.link_xon_tx),
 128         I40E_PF_STAT("link_xoff_tx", stats.link_xoff_tx),
 129         I40E_PF_STAT("rx_size_64", stats.rx_size_64),
 130         I40E_PF_STAT("rx_size_127", stats.rx_size_127),
 131         I40E_PF_STAT("rx_size_255", stats.rx_size_255),
 132         I40E_PF_STAT("rx_size_511", stats.rx_size_511),
 133         I40E_PF_STAT("rx_size_1023", stats.rx_size_1023),
 134         I40E_PF_STAT("rx_size_1522", stats.rx_size_1522),
 135         I40E_PF_STAT("rx_size_big", stats.rx_size_big),
 136         I40E_PF_STAT("tx_size_64", stats.tx_size_64),
 137         I40E_PF_STAT("tx_size_127", stats.tx_size_127),
 138         I40E_PF_STAT("tx_size_255", stats.tx_size_255),
 139         I40E_PF_STAT("tx_size_511", stats.tx_size_511),
 140         I40E_PF_STAT("tx_size_1023", stats.tx_size_1023),
 141         I40E_PF_STAT("tx_size_1522", stats.tx_size_1522),
 142         I40E_PF_STAT("tx_size_big", stats.tx_size_big),
 143         I40E_PF_STAT("rx_undersize", stats.rx_undersize),
 144         I40E_PF_STAT("rx_fragments", stats.rx_fragments),
 145         I40E_PF_STAT("rx_oversize", stats.rx_oversize),
 146         I40E_PF_STAT("rx_jabber", stats.rx_jabber),
 147         I40E_PF_STAT("VF_admin_queue_requests", vf_aq_requests),
 148         I40E_PF_STAT("arq_overflows", arq_overflows),
 149         I40E_PF_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
 150         I40E_PF_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped),
 151         I40E_PF_STAT("fdir_flush_cnt", fd_flush_cnt),
 152         I40E_PF_STAT("fdir_atr_match", stats.fd_atr_match),
 153         I40E_PF_STAT("fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
 154         I40E_PF_STAT("fdir_atr_status", stats.fd_atr_status),
 155         I40E_PF_STAT("fdir_sb_match", stats.fd_sb_match),
 156         I40E_PF_STAT("fdir_sb_status", stats.fd_sb_status),
 157
 158         /* LPI stats */
 159         I40E_PF_STAT("tx_lpi_status", stats.tx_lpi_status),
 160         I40E_PF_STAT("rx_lpi_status", stats.rx_lpi_status),
 161         I40E_PF_STAT("tx_lpi_count", stats.tx_lpi_count),
 162         I40E_PF_STAT("rx_lpi_count", stats.rx_lpi_count),
 163 };
 164
 165 #define I40E_QUEUE_STATS_LEN(n) \
 166         (((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs \
 167             * 2 /* Tx and Rx together */                                     \
 168             * (sizeof(struct i40e_queue_stats) / sizeof(u64)))
 169 #define I40E_GLOBAL_STATS_LEN   ARRAY_SIZE(i40e_gstrings_stats)
 170 #define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
 171 #define I40E_MISC_STATS_LEN     ARRAY_SIZE(i40e_gstrings_misc_stats)
 172 #define I40E_VSI_STATS_LEN(n)   (I40E_NETDEV_STATS_LEN + \
 173                                  I40E_MISC_STATS_LEN + \
 174                                  I40E_QUEUE_STATS_LEN((n)))
 175 #define I40E_PFC_STATS_LEN ( \
 176                 (FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_rx) + \
 177                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_rx) + \
 178                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_tx) + \
 179                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_tx) + \
 180                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_2_xoff)) \
 181                  / sizeof(u64))
 182 #define I40E_VEB_TC_STATS_LEN ( \
 183                 (FIELD_SIZEOF(struct i40e_veb, tc_stats.tc_rx_packets) + \
 184                  FIELD_SIZEOF(struct i40e_veb, tc_stats.tc_rx_bytes) + \
 185                  FIELD_SIZEOF(struct i40e_veb, tc_stats.tc_tx_packets) + \
 186                  FIELD_SIZEOF(struct i40e_veb, tc_stats.tc_tx_bytes)) \
 187                  / sizeof(u64))
 188 #define I40E_VEB_STATS_LEN      ARRAY_SIZE(i40e_gstrings_veb_stats)
 189 #define I40E_VEB_STATS_TOTAL    (I40E_VEB_STATS_LEN + I40E_VEB_TC_STATS_LEN)
 190 #define I40E_PF_STATS_LEN(n)    (I40E_GLOBAL_STATS_LEN + \
 191                                  I40E_PFC_STATS_LEN + \
 192                                  I40E_VSI_STATS_LEN((n)))
 193
 194 enum i40e_ethtool_test_id {
 195         I40E_ETH_TEST_REG = 0,
 196         I40E_ETH_TEST_EEPROM,
 197         I40E_ETH_TEST_INTR,
 198         I40E_ETH_TEST_LINK,
 199 };
 200
 201 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
 202         "Register test  (offline)",
 203         "Eeprom test    (offline)",
 204         "Interrupt test (offline)",
 205         "Link test   (on/offline)"
 206 };
 207
 208 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
 209
 210 struct i40e_priv_flags {
 211         char flag_string[ETH_GSTRING_LEN];
 212         u64 flag;
 213         bool read_only;
 214 };
 215
 216 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
 217         .flag_string = _name, \
 218         .flag = _flag, \
 219         .read_only = _read_only, \
 220 }
 221
 222 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
 223         /* NOTE: MFP setting cannot be changed */
 224         I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
 225         I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
 226         I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
 227         I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
 228         I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
 229         I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
 230 };
 231
 232 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
 233
 234 /* Private flags with a global effect, restricted to PF 0 */
 235 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
 236         I40E_PRIV_FLAG("vf-true-promisc-support",
 237                        I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
 238 };
 239
 240 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
 241
 242 /**
 243  * i40e_partition_setting_complaint - generic complaint for MFP restriction
 244  * @pf: the PF struct
 245  **/
 246 static void i40e_partition_setting_complaint(struct i40e_pf *pf)
 247 {
 248         dev_info(&pf->pdev->dev,
 249                  "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n");
 250 }
 251
 252 /**
 253  * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
 254  * @phy_types: PHY types to convert
 255  * @supported: pointer to the ethtool supported variable to fill in
 256  * @advertising: pointer to the ethtool advertising variable to fill in
 257  *
 258  **/
 259 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf, u32 *supported,
 260                                      u32 *advertising)
 261 {
 262         struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
 263         u64 phy_types = pf->hw.phy.phy_types;
 264
 265         *supported = 0x0;
 266         *advertising = 0x0;
 267
 268         if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
 269                 *supported |= SUPPORTED_Autoneg |
 270                               SUPPORTED_1000baseT_Full;
 271                 *advertising |= ADVERTISED_Autoneg;
 272                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 273                         *advertising |= ADVERTISED_1000baseT_Full;
 274                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 275                         *supported |= SUPPORTED_100baseT_Full;
 276                         *advertising |= ADVERTISED_100baseT_Full;
 277                 }
 278         }
 279         if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
 280             phy_types & I40E_CAP_PHY_TYPE_XFI ||
 281             phy_types & I40E_CAP_PHY_TYPE_SFI ||
 282             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
 283             phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC)
 284                 *supported |= SUPPORTED_10000baseT_Full;
 285         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
 286             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 287             phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
 288             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
 289             phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
 290                 *supported |= SUPPORTED_Autoneg |
 291                               SUPPORTED_10000baseT_Full;
 292                 *advertising |= ADVERTISED_Autoneg;
 293                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 294                         *advertising |= ADVERTISED_10000baseT_Full;
 295         }
 296         if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
 297             phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
 298             phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
 299                 *supported |= SUPPORTED_40000baseCR4_Full;
 300         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 301             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
 302                 *supported |= SUPPORTED_Autoneg |
 303                               SUPPORTED_40000baseCR4_Full;
 304                 *advertising |= ADVERTISED_Autoneg;
 305                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
 306                         *advertising |= ADVERTISED_40000baseCR4_Full;
 307         }
 308         if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 309                 *supported |= SUPPORTED_Autoneg |
 310                               SUPPORTED_100baseT_Full;
 311                 *advertising |= ADVERTISED_Autoneg;
 312                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 313                         *advertising |= ADVERTISED_100baseT_Full;
 314         }
 315         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
 316             phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 317             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 318             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
 319                 *supported |= SUPPORTED_Autoneg |
 320                               SUPPORTED_1000baseT_Full;
 321                 *advertising |= ADVERTISED_Autoneg;
 322                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 323                         *advertising |= ADVERTISED_1000baseT_Full;
 324         }
 325         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4)
 326                 *supported |= SUPPORTED_40000baseSR4_Full;
 327         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4)
 328                 *supported |= SUPPORTED_40000baseLR4_Full;
 329         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
 330                 *supported |= SUPPORTED_40000baseKR4_Full |
 331                               SUPPORTED_Autoneg;
 332                 *advertising |= ADVERTISED_40000baseKR4_Full |
 333                                 ADVERTISED_Autoneg;
 334         }
 335         if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
 336                 *supported |= SUPPORTED_20000baseKR2_Full |
 337                               SUPPORTED_Autoneg;
 338                 *advertising |= ADVERTISED_Autoneg;
 339                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
 340                         *advertising |= ADVERTISED_20000baseKR2_Full;
 341         }
 342         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR) {
 343                 if (!(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER))
 344                         *supported |= SUPPORTED_10000baseKR_Full |
 345                                       SUPPORTED_Autoneg;
 346                 *advertising |= ADVERTISED_Autoneg;
 347                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 348                         if (!(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER))
 349                                 *advertising |= ADVERTISED_10000baseKR_Full;
 350         }
 351         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
 352                 *supported |= SUPPORTED_10000baseKX4_Full |
 353                               SUPPORTED_Autoneg;
 354                 *advertising |= ADVERTISED_Autoneg;
 355                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 356                         *advertising |= ADVERTISED_10000baseKX4_Full;
 357         }
 358         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX) {
 359                 if (!(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER))
 360                         *supported |= SUPPORTED_1000baseKX_Full |
 361                                       SUPPORTED_Autoneg;
 362                 *advertising |= ADVERTISED_Autoneg;
 363                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 364                         if (!(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER))
 365                                 *advertising |= ADVERTISED_1000baseKX_Full;
 366         }
 367         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
 368             phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
 369             phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 370             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
 371                 *supported |= SUPPORTED_Autoneg;
 372                 *advertising |= ADVERTISED_Autoneg;
 373         }
 374 }
 375
 376 /**
 377  * i40e_get_settings_link_up - Get the Link settings for when link is up
 378  * @hw: hw structure
 379  * @ecmd: ethtool command to fill in
 380  * @netdev: network interface device structure
 381  *
 382  **/
 383 static void i40e_get_settings_link_up(struct i40e_hw *hw,
 384                                       struct ethtool_link_ksettings *cmd,
 385                                       struct net_device *netdev,
 386                                       struct i40e_pf *pf)
 387 {
 388         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 389         u32 link_speed = hw_link_info->link_speed;
 390         u32 e_advertising = 0x0;
 391         u32 e_supported = 0x0;
 392         u32 supported, advertising;
 393
 394         ethtool_convert_link_mode_to_legacy_u32(&supported,
 395                                                 cmd->link_modes.supported);
 396         ethtool_convert_link_mode_to_legacy_u32(&advertising,
 397                                                 cmd->link_modes.advertising);
 398
 399         /* Initialize supported and advertised settings based on phy settings */
 400         switch (hw_link_info->phy_type) {
 401         case I40E_PHY_TYPE_40GBASE_CR4:
 402         case I40E_PHY_TYPE_40GBASE_CR4_CU:
 403                 supported = SUPPORTED_Autoneg |
 404                             SUPPORTED_40000baseCR4_Full;
 405                 advertising = ADVERTISED_Autoneg |
 406                               ADVERTISED_40000baseCR4_Full;
 407                 break;
 408         case I40E_PHY_TYPE_XLAUI:
 409         case I40E_PHY_TYPE_XLPPI:
 410         case I40E_PHY_TYPE_40GBASE_AOC:
 411                 supported = SUPPORTED_40000baseCR4_Full;
 412                 break;
 413         case I40E_PHY_TYPE_40GBASE_SR4:
 414                 supported = SUPPORTED_40000baseSR4_Full;
 415                 break;
 416         case I40E_PHY_TYPE_40GBASE_LR4:
 417                 supported = SUPPORTED_40000baseLR4_Full;
 418                 break;
 419         case I40E_PHY_TYPE_10GBASE_SR:
 420         case I40E_PHY_TYPE_10GBASE_LR:
 421         case I40E_PHY_TYPE_1000BASE_SX:
 422         case I40E_PHY_TYPE_1000BASE_LX:
 423                 supported = SUPPORTED_10000baseT_Full;
 424                 if (hw_link_info->module_type[2] &
 425                     I40E_MODULE_TYPE_1000BASE_SX ||
 426                     hw_link_info->module_type[2] &
 427                     I40E_MODULE_TYPE_1000BASE_LX) {
 428                         supported |= SUPPORTED_1000baseT_Full;
 429                         if (hw_link_info->requested_speeds &
 430                             I40E_LINK_SPEED_1GB)
 431                                 advertising |= ADVERTISED_1000baseT_Full;
 432                 }
 433                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 434                         advertising |= ADVERTISED_10000baseT_Full;
 435                 break;
 436         case I40E_PHY_TYPE_10GBASE_T:
 437         case I40E_PHY_TYPE_1000BASE_T:
 438         case I40E_PHY_TYPE_100BASE_TX:
 439                 supported = SUPPORTED_Autoneg |
 440                             SUPPORTED_10000baseT_Full |
 441                             SUPPORTED_1000baseT_Full |
 442                             SUPPORTED_100baseT_Full;
 443                 advertising = ADVERTISED_Autoneg;
 444                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 445                         advertising |= ADVERTISED_10000baseT_Full;
 446                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 447                         advertising |= ADVERTISED_1000baseT_Full;
 448                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 449                         advertising |= ADVERTISED_100baseT_Full;
 450                 break;
 451         case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
 452                 supported = SUPPORTED_Autoneg |
 453                             SUPPORTED_1000baseT_Full;
 454                 advertising = ADVERTISED_Autoneg |
 455                               ADVERTISED_1000baseT_Full;
 456                 break;
 457         case I40E_PHY_TYPE_10GBASE_CR1_CU:
 458         case I40E_PHY_TYPE_10GBASE_CR1:
 459                 supported = SUPPORTED_Autoneg |
 460                             SUPPORTED_10000baseT_Full;
 461                 advertising = ADVERTISED_Autoneg |
 462                               ADVERTISED_10000baseT_Full;
 463                 break;
 464         case I40E_PHY_TYPE_XAUI:
 465         case I40E_PHY_TYPE_XFI:
 466         case I40E_PHY_TYPE_SFI:
 467         case I40E_PHY_TYPE_10GBASE_SFPP_CU:
 468         case I40E_PHY_TYPE_10GBASE_AOC:
 469                 supported = SUPPORTED_10000baseT_Full;
 470                 advertising = SUPPORTED_10000baseT_Full;
 471                 break;
 472         case I40E_PHY_TYPE_SGMII:
 473                 supported = SUPPORTED_Autoneg |
 474                             SUPPORTED_1000baseT_Full;
 475                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 476                         advertising |= ADVERTISED_1000baseT_Full;
 477                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 478                         supported |= SUPPORTED_100baseT_Full;
 479                         if (hw_link_info->requested_speeds &
 480                             I40E_LINK_SPEED_100MB)
 481                                 advertising |= ADVERTISED_100baseT_Full;
 482                 }
 483                 break;
 484         case I40E_PHY_TYPE_40GBASE_KR4:
 485         case I40E_PHY_TYPE_20GBASE_KR2:
 486         case I40E_PHY_TYPE_10GBASE_KR:
 487         case I40E_PHY_TYPE_10GBASE_KX4:
 488         case I40E_PHY_TYPE_1000BASE_KX:
 489                 supported |= SUPPORTED_40000baseKR4_Full |
 490                              SUPPORTED_20000baseKR2_Full |
 491                              SUPPORTED_10000baseKR_Full |
 492                              SUPPORTED_10000baseKX4_Full |
 493                              SUPPORTED_1000baseKX_Full |
 494                              SUPPORTED_Autoneg;
 495                 advertising |= ADVERTISED_40000baseKR4_Full |
 496                                ADVERTISED_20000baseKR2_Full |
 497                                ADVERTISED_10000baseKR_Full |
 498                                ADVERTISED_10000baseKX4_Full |
 499                                ADVERTISED_1000baseKX_Full |
 500                                ADVERTISED_Autoneg;
 501                 break;
 502         case I40E_PHY_TYPE_25GBASE_KR:
 503         case I40E_PHY_TYPE_25GBASE_CR:
 504         case I40E_PHY_TYPE_25GBASE_SR:
 505         case I40E_PHY_TYPE_25GBASE_LR:
 506                 supported = SUPPORTED_Autoneg;
 507                 advertising = ADVERTISED_Autoneg;
 508                 /* TODO: add speeds when ethtool is ready to support*/
 509                 break;
 510         default:
 511                 /* if we got here and link is up something bad is afoot */
 512                 netdev_info(netdev, "WARNING: Link is up but PHY type 0x%x is not recognized.\n",
 513                             hw_link_info->phy_type);
 514         }
 515
 516         /* Now that we've worked out everything that could be supported by the
 517          * current PHY type, get what is supported by the NVM and them to
 518          * get what is truly supported
 519          */
 520         i40e_phy_type_to_ethtool(pf, &e_supported,
 521                                  &e_advertising);
 522
 523         supported = supported & e_supported;
 524         advertising = advertising & e_advertising;
 525
 526         /* Set speed and duplex */
 527         switch (link_speed) {
 528         case I40E_LINK_SPEED_40GB:
 529                 cmd->base.speed = SPEED_40000;
 530                 break;
 531         case I40E_LINK_SPEED_25GB:
 532 #ifdef SPEED_25000
 533                 cmd->base.speed = SPEED_25000;
 534 #else
 535                 netdev_info(netdev,
 536                             "Speed is 25G, display not supported by this version of ethtool.\n");
 537 #endif
 538                 break;
 539         case I40E_LINK_SPEED_20GB:
 540                 cmd->base.speed = SPEED_20000;
 541                 break;
 542         case I40E_LINK_SPEED_10GB:
 543                 cmd->base.speed = SPEED_10000;
 544                 break;
 545         case I40E_LINK_SPEED_1GB:
 546                 cmd->base.speed = SPEED_1000;
 547                 break;
 548         case I40E_LINK_SPEED_100MB:
 549                 cmd->base.speed = SPEED_100;
 550                 break;
 551         default:
 552                 break;
 553         }
 554         cmd->base.duplex = DUPLEX_FULL;
 555
 556         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
 557                                                 supported);
 558         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
 559                                                 advertising);
 560 }
 561
 562 /**
 563  * i40e_get_settings_link_down - Get the Link settings for when link is down
 564  * @hw: hw structure
 565  * @ecmd: ethtool command to fill in
 566  *
 567  * Reports link settings that can be determined when link is down
 568  **/
 569 static void i40e_get_settings_link_down(struct i40e_hw *hw,
 570                                         struct ethtool_link_ksettings *cmd,
 571                                         struct i40e_pf *pf)
 572 {
 573         u32 supported, advertising;
 574
 575         /* link is down and the driver needs to fall back on
 576          * supported phy types to figure out what info to display
 577          */
 578         i40e_phy_type_to_ethtool(pf, &supported, &advertising);
 579
 580         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
 581                                                 supported);
 582         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
 583                                                 advertising);
 584
 585         /* With no link speed and duplex are unknown */
 586         cmd->base.speed = SPEED_UNKNOWN;
 587         cmd->base.duplex = DUPLEX_UNKNOWN;
 588 }
 589
 590 /**
 591  * i40e_get_settings - Get Link Speed and Duplex settings
 592  * @netdev: network interface device structure
 593  * @ecmd: ethtool command
 594  *
 595  * Reports speed/duplex settings based on media_type
 596  **/
 597 static int i40e_get_link_ksettings(struct net_device *netdev,
 598                                    struct ethtool_link_ksettings *cmd)
 599 {
 600         struct i40e_netdev_priv *np = netdev_priv(netdev);
 601         struct i40e_pf *pf = np->vsi->back;
 602         struct i40e_hw *hw = &pf->hw;
 603         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 604         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
 605         u32 advertising;
 606
 607         if (link_up)
 608                 i40e_get_settings_link_up(hw, cmd, netdev, pf);
 609         else
 610                 i40e_get_settings_link_down(hw, cmd, pf);
 611
 612         /* Now set the settings that don't rely on link being up/down */
 613         /* Set autoneg settings */
 614         cmd->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 615                           AUTONEG_ENABLE : AUTONEG_DISABLE);
 616
 617         switch (hw->phy.media_type) {
 618         case I40E_MEDIA_TYPE_BACKPLANE:
 619                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 620                                                      Autoneg);
 621                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 622                                                      Backplane);
 623                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 624                                                      Autoneg);
 625                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 626                                                      Backplane);
 627                 cmd->base.port = PORT_NONE;
 628                 break;
 629         case I40E_MEDIA_TYPE_BASET:
 630                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 631                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 632                 cmd->base.port = PORT_TP;
 633                 break;
 634         case I40E_MEDIA_TYPE_DA:
 635         case I40E_MEDIA_TYPE_CX4:
 636                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
 637                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 638                 cmd->base.port = PORT_DA;
 639                 break;
 640         case I40E_MEDIA_TYPE_FIBER:
 641                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
 642                 cmd->base.port = PORT_FIBRE;
 643                 break;
 644         case I40E_MEDIA_TYPE_UNKNOWN:
 645         default:
 646                 cmd->base.port = PORT_OTHER;
 647                 break;
 648         }
 649
 650         /* Set flow control settings */
 651         ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
 652
 653         switch (hw->fc.requested_mode) {
 654         case I40E_FC_FULL:
 655                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 656                                                      Pause);
 657                 break;
 658         case I40E_FC_TX_PAUSE:
 659                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 660                                                      Asym_Pause);
 661                 break;
 662         case I40E_FC_RX_PAUSE:
 663                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 664                                                      Pause);
 665                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 666                                                      Asym_Pause);
 667                 break;
 668         default:
 669                 ethtool_convert_link_mode_to_legacy_u32(
 670                         &advertising, cmd->link_modes.advertising);
 671
 672                 advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 673
 674                 ethtool_convert_legacy_u32_to_link_mode(
 675                         cmd->link_modes.advertising, advertising);
 676                 break;
 677         }
 678
 679         return 0;
 680 }
 681
 682 /**
 683  * i40e_set_settings - Set Speed and Duplex
 684  * @netdev: network interface device structure
 685  * @ecmd: ethtool command
 686  *
 687  * Set speed/duplex per media_types advertised/forced
 688  **/
 689 static int i40e_set_link_ksettings(struct net_device *netdev,
 690                                    const struct ethtool_link_ksettings *cmd)
 691 {
 692         struct i40e_netdev_priv *np = netdev_priv(netdev);
 693         struct i40e_aq_get_phy_abilities_resp abilities;
 694         struct i40e_aq_set_phy_config config;
 695         struct i40e_pf *pf = np->vsi->back;
 696         struct i40e_vsi *vsi = np->vsi;
 697         struct i40e_hw *hw = &pf->hw;
 698         struct ethtool_link_ksettings safe_cmd;
 699         struct ethtool_link_ksettings copy_cmd;
 700         i40e_status status = 0;
 701         bool change = false;
 702         int timeout = 50;
 703         int err = 0;
 704         u32 autoneg;
 705         u32 advertise;
 706         u32 tmp;
 707
 708         /* Changing port settings is not supported if this isn't the
 709          * port's controlling PF
 710          */
 711         if (hw->partition_id != 1) {
 712                 i40e_partition_setting_complaint(pf);
 713                 return -EOPNOTSUPP;
 714         }
 715
 716         if (vsi != pf->vsi[pf->lan_vsi])
 717                 return -EOPNOTSUPP;
 718
 719         if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
 720             hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
 721             hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
 722             hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
 723             hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
 724                 return -EOPNOTSUPP;
 725
 726         if (hw->device_id == I40E_DEV_ID_KX_B ||
 727             hw->device_id == I40E_DEV_ID_KX_C ||
 728             hw->device_id == I40E_DEV_ID_20G_KR2 ||
 729             hw->device_id == I40E_DEV_ID_20G_KR2_A) {
 730                 netdev_info(netdev, "Changing settings is not supported on backplane.\n");
 731                 return -EOPNOTSUPP;
 732         }
 733
 734         /* copy the cmd to copy_cmd to avoid modifying the origin */
 735         memcpy(&copy_cmd, cmd, sizeof(struct ethtool_link_ksettings));
 736
 737         /* get our own copy of the bits to check against */
 738         memset(&safe_cmd, 0, sizeof(struct ethtool_link_ksettings));
 739         i40e_get_link_ksettings(netdev, &safe_cmd);
 740
 741         /* save autoneg and speed out of cmd */
 742         autoneg = cmd->base.autoneg;
 743         ethtool_convert_link_mode_to_legacy_u32(&advertise,
 744                                                 cmd->link_modes.advertising);
 745
 746         /* set autoneg and speed back to what they currently are */
 747         copy_cmd.base.autoneg = safe_cmd.base.autoneg;
 748         ethtool_convert_link_mode_to_legacy_u32(
 749                 &tmp, safe_cmd.link_modes.advertising);
 750         ethtool_convert_legacy_u32_to_link_mode(
 751                 copy_cmd.link_modes.advertising, tmp);
 752
 753         copy_cmd.base.cmd = safe_cmd.base.cmd;
 754
 755         /* If copy_cmd and safe_cmd are not the same now, then they are
 756          * trying to set something that we do not support
 757          */
 758         if (memcmp(&copy_cmd, &safe_cmd, sizeof(struct ethtool_link_ksettings)))
 759                 return -EOPNOTSUPP;
 760
 761         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
 762                 timeout--;
 763                 if (!timeout)
 764                         return -EBUSY;
 765                 usleep_range(1000, 2000);
 766         }
 767
 768         /* Get the current phy config */
 769         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
 770                                               NULL);
 771         if (status) {
 772                 err = -EAGAIN;
 773                 goto done;
 774         }
 775
 776         /* Copy abilities to config in case autoneg is not
 777          * set below
 778          */
 779         memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
 780         config.abilities = abilities.abilities;
 781
 782         /* Check autoneg */
 783         if (autoneg == AUTONEG_ENABLE) {
 784                 /* If autoneg was not already enabled */
 785                 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
 786                         /* If autoneg is not supported, return error */
 787                         if (!ethtool_link_ksettings_test_link_mode(
 788                                     &safe_cmd, supported, Autoneg)) {
 789                                 netdev_info(netdev, "Autoneg not supported on this phy\n");
 790                                 err = -EINVAL;
 791                                 goto done;
 792                         }
 793                         /* Autoneg is allowed to change */
 794                         config.abilities = abilities.abilities |
 795                                            I40E_AQ_PHY_ENABLE_AN;
 796                         change = true;
 797                 }
 798         } else {
 799                 /* If autoneg is currently enabled */
 800                 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
 801                         /* If autoneg is supported 10GBASE_T is the only PHY
 802                          * that can disable it, so otherwise return error
 803                          */
 804                         if (ethtool_link_ksettings_test_link_mode(
 805                                     &safe_cmd, supported, Autoneg) &&
 806                             hw->phy.link_info.phy_type !=
 807                             I40E_PHY_TYPE_10GBASE_T) {
 808                                 netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
 809                                 err = -EINVAL;
 810                                 goto done;
 811                         }
 812                         /* Autoneg is allowed to change */
 813                         config.abilities = abilities.abilities &
 814                                            ~I40E_AQ_PHY_ENABLE_AN;
 815                         change = true;
 816                 }
 817         }
 818
 819         ethtool_convert_link_mode_to_legacy_u32(&tmp,
 820                                                 safe_cmd.link_modes.supported);
 821         if (advertise & ~tmp) {
 822                 err = -EINVAL;
 823                 goto done;
 824         }
 825
 826         if (advertise & ADVERTISED_100baseT_Full)
 827                 config.link_speed |= I40E_LINK_SPEED_100MB;
 828         if (advertise & ADVERTISED_1000baseT_Full ||
 829             advertise & ADVERTISED_1000baseKX_Full)
 830                 config.link_speed |= I40E_LINK_SPEED_1GB;
 831         if (advertise & ADVERTISED_10000baseT_Full ||
 832             advertise & ADVERTISED_10000baseKX4_Full ||
 833             advertise & ADVERTISED_10000baseKR_Full)
 834                 config.link_speed |= I40E_LINK_SPEED_10GB;
 835         if (advertise & ADVERTISED_20000baseKR2_Full)
 836                 config.link_speed |= I40E_LINK_SPEED_20GB;
 837         if (advertise & ADVERTISED_40000baseKR4_Full ||
 838             advertise & ADVERTISED_40000baseCR4_Full ||
 839             advertise & ADVERTISED_40000baseSR4_Full ||
 840             advertise & ADVERTISED_40000baseLR4_Full)
 841                 config.link_speed |= I40E_LINK_SPEED_40GB;
 842
 843         /* If speed didn't get set, set it to what it currently is.
 844          * This is needed because if advertise is 0 (as it is when autoneg
 845          * is disabled) then speed won't get set.
 846          */
 847         if (!config.link_speed)
 848                 config.link_speed = abilities.link_speed;
 849
 850         if (change || (abilities.link_speed != config.link_speed)) {
 851                 /* copy over the rest of the abilities */
 852                 config.phy_type = abilities.phy_type;
 853                 config.phy_type_ext = abilities.phy_type_ext;
 854                 config.eee_capability = abilities.eee_capability;
 855                 config.eeer = abilities.eeer_val;
 856                 config.low_power_ctrl = abilities.d3_lpan;
 857                 config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
 858                                     I40E_AQ_PHY_FEC_CONFIG_MASK;
 859
 860                 /* save the requested speeds */
 861                 hw->phy.link_info.requested_speeds = config.link_speed;
 862                 /* set link and auto negotiation so changes take effect */
 863                 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
 864                 /* If link is up put link down */
 865                 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
 866                         /* Tell the OS link is going down, the link will go
 867                          * back up when fw says it is ready asynchronously
 868                          */
 869                         i40e_print_link_message(vsi, false);
 870                         netif_carrier_off(netdev);
 871                         netif_tx_stop_all_queues(netdev);
 872                 }
 873
 874                 /* make the aq call */
 875                 status = i40e_aq_set_phy_config(hw, &config, NULL);
 876                 if (status) {
 877                         netdev_info(netdev, "Set phy config failed, err %s aq_err %s\n",
 878                                     i40e_stat_str(hw, status),
 879                                     i40e_aq_str(hw, hw->aq.asq_last_status));
 880                         err = -EAGAIN;
 881                         goto done;
 882                 }
 883
 884                 status = i40e_update_link_info(hw);
 885                 if (status)
 886                         netdev_dbg(netdev, "Updating link info failed with err %s aq_err %s\n",
 887                                    i40e_stat_str(hw, status),
 888                                    i40e_aq_str(hw, hw->aq.asq_last_status));
 889
 890         } else {
 891                 netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
 892         }
 893
 894 done:
 895         clear_bit(__I40E_CONFIG_BUSY, pf->state);
 896
 897         return err;
 898 }
 899
 900 static int i40e_nway_reset(struct net_device *netdev)
 901 {
 902         /* restart autonegotiation */
 903         struct i40e_netdev_priv *np = netdev_priv(netdev);
 904         struct i40e_pf *pf = np->vsi->back;
 905         struct i40e_hw *hw = &pf->hw;
 906         bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
 907         i40e_status ret = 0;
 908
 909         ret = i40e_aq_set_link_restart_an(hw, link_up, NULL);
 910         if (ret) {
 911                 netdev_info(netdev, "link restart failed, err %s aq_err %s\n",
 912                             i40e_stat_str(hw, ret),
 913                             i40e_aq_str(hw, hw->aq.asq_last_status));
 914                 return -EIO;
 915         }
 916
 917         return 0;
 918 }
 919
 920 /**
 921  * i40e_get_pauseparam -  Get Flow Control status
 922  * Return tx/rx-pause status
 923  **/
 924 static void i40e_get_pauseparam(struct net_device *netdev,
 925                                 struct ethtool_pauseparam *pause)
 926 {
 927         struct i40e_netdev_priv *np = netdev_priv(netdev);
 928         struct i40e_pf *pf = np->vsi->back;
 929         struct i40e_hw *hw = &pf->hw;
 930         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 931         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
 932
 933         pause->autoneg =
 934                 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 935                   AUTONEG_ENABLE : AUTONEG_DISABLE);
 936
 937         /* PFC enabled so report LFC as off */
 938         if (dcbx_cfg->pfc.pfcenable) {
 939                 pause->rx_pause = 0;
 940                 pause->tx_pause = 0;
 941                 return;
 942         }
 943
 944         if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
 945                 pause->rx_pause = 1;
 946         } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
 947                 pause->tx_pause = 1;
 948         } else if (hw->fc.current_mode == I40E_FC_FULL) {
 949                 pause->rx_pause = 1;
 950                 pause->tx_pause = 1;
 951         }
 952 }
 953
 954 /**
 955  * i40e_set_pauseparam - Set Flow Control parameter
 956  * @netdev: network interface device structure
 957  * @pause: return tx/rx flow control status
 958  **/
 959 static int i40e_set_pauseparam(struct net_device *netdev,
 960                                struct ethtool_pauseparam *pause)
 961 {
 962         struct i40e_netdev_priv *np = netdev_priv(netdev);
 963         struct i40e_pf *pf = np->vsi->back;
 964         struct i40e_vsi *vsi = np->vsi;
 965         struct i40e_hw *hw = &pf->hw;
 966         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 967         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
 968         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
 969         i40e_status status;
 970         u8 aq_failures;
 971         int err = 0;
 972         u32 is_an;
 973
 974         /* Changing the port's flow control is not supported if this isn't the
 975          * port's controlling PF
 976          */
 977         if (hw->partition_id != 1) {
 978                 i40e_partition_setting_complaint(pf);
 979                 return -EOPNOTSUPP;
 980         }
 981
 982         if (vsi != pf->vsi[pf->lan_vsi])
 983                 return -EOPNOTSUPP;
 984
 985         is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
 986         if (pause->autoneg != is_an) {
 987                 netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
 988                 return -EOPNOTSUPP;
 989         }
 990
 991         /* If we have link and don't have autoneg */
 992         if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
 993                 /* Send message that it might not necessarily work*/
 994                 netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
 995         }
 996
 997         if (dcbx_cfg->pfc.pfcenable) {
 998                 netdev_info(netdev,
 999                             "Priority flow control enabled. Cannot set link flow control.\n");
1000                 return -EOPNOTSUPP;
1001         }
1002
1003         if (pause->rx_pause && pause->tx_pause)
1004                 hw->fc.requested_mode = I40E_FC_FULL;
1005         else if (pause->rx_pause && !pause->tx_pause)
1006                 hw->fc.requested_mode = I40E_FC_RX_PAUSE;
1007         else if (!pause->rx_pause && pause->tx_pause)
1008                 hw->fc.requested_mode = I40E_FC_TX_PAUSE;
1009         else if (!pause->rx_pause && !pause->tx_pause)
1010                 hw->fc.requested_mode = I40E_FC_NONE;
1011         else
1012                  return -EINVAL;
1013
1014         /* Tell the OS link is going down, the link will go back up when fw
1015          * says it is ready asynchronously
1016          */
1017         i40e_print_link_message(vsi, false);
1018         netif_carrier_off(netdev);
1019         netif_tx_stop_all_queues(netdev);
1020
1021         /* Set the fc mode and only restart an if link is up*/
1022         status = i40e_set_fc(hw, &aq_failures, link_up);
1023
1024         if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1025                 netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n",
1026                             i40e_stat_str(hw, status),
1027                             i40e_aq_str(hw, hw->aq.asq_last_status));
1028                 err = -EAGAIN;
1029         }
1030         if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1031                 netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n",
1032                             i40e_stat_str(hw, status),
1033                             i40e_aq_str(hw, hw->aq.asq_last_status));
1034                 err = -EAGAIN;
1035         }
1036         if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1037                 netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n",
1038                             i40e_stat_str(hw, status),
1039                             i40e_aq_str(hw, hw->aq.asq_last_status));
1040                 err = -EAGAIN;
1041         }
1042
1043         if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
1044                 /* Give it a little more time to try to come back */
1045                 msleep(75);
1046                 if (!test_bit(__I40E_DOWN, pf->state))
1047                         return i40e_nway_reset(netdev);
1048         }
1049
1050         return err;
1051 }
1052
1053 static u32 i40e_get_msglevel(struct net_device *netdev)
1054 {
1055         struct i40e_netdev_priv *np = netdev_priv(netdev);
1056         struct i40e_pf *pf = np->vsi->back;
1057         u32 debug_mask = pf->hw.debug_mask;
1058
1059         if (debug_mask)
1060                 netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
1061
1062         return pf->msg_enable;
1063 }
1064
1065 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
1066 {
1067         struct i40e_netdev_priv *np = netdev_priv(netdev);
1068         struct i40e_pf *pf = np->vsi->back;
1069
1070         if (I40E_DEBUG_USER & data)
1071                 pf->hw.debug_mask = data;
1072         else
1073                 pf->msg_enable = data;
1074 }
1075
1076 static int i40e_get_regs_len(struct net_device *netdev)
1077 {
1078         int reg_count = 0;
1079         int i;
1080
1081         for (i = 0; i40e_reg_list[i].offset != 0; i++)
1082                 reg_count += i40e_reg_list[i].elements;
1083
1084         return reg_count * sizeof(u32);
1085 }
1086
1087 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
1088                           void *p)
1089 {
1090         struct i40e_netdev_priv *np = netdev_priv(netdev);
1091         struct i40e_pf *pf = np->vsi->back;
1092         struct i40e_hw *hw = &pf->hw;
1093         u32 *reg_buf = p;
1094         unsigned int i, j, ri;
1095         u32 reg;
1096
1097         /* Tell ethtool which driver-version-specific regs output we have.
1098          *
1099          * At some point, if we have ethtool doing special formatting of
1100          * this data, it will rely on this version number to know how to
1101          * interpret things.  Hence, this needs to be updated if/when the
1102          * diags register table is changed.
1103          */
1104         regs->version = 1;
1105
1106         /* loop through the diags reg table for what to print */
1107         ri = 0;
1108         for (i = 0; i40e_reg_list[i].offset != 0; i++) {
1109                 for (j = 0; j < i40e_reg_list[i].elements; j++) {
1110                         reg = i40e_reg_list[i].offset
1111                                 + (j * i40e_reg_list[i].stride);
1112                         reg_buf[ri++] = rd32(hw, reg);
1113                 }
1114         }
1115
1116 }
1117
1118 static int i40e_get_eeprom(struct net_device *netdev,
1119                            struct ethtool_eeprom *eeprom, u8 *bytes)
1120 {
1121         struct i40e_netdev_priv *np = netdev_priv(netdev);
1122         struct i40e_hw *hw = &np->vsi->back->hw;
1123         struct i40e_pf *pf = np->vsi->back;
1124         int ret_val = 0, len, offset;
1125         u8 *eeprom_buff;
1126         u16 i, sectors;
1127         bool last;
1128         u32 magic;
1129
1130 #define I40E_NVM_SECTOR_SIZE  4096
1131         if (eeprom->len == 0)
1132                 return -EINVAL;
1133
1134         /* check for NVMUpdate access method */
1135         magic = hw->vendor_id | (hw->device_id << 16);
1136         if (eeprom->magic && eeprom->magic != magic) {
1137                 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1138                 int errno = 0;
1139
1140                 /* make sure it is the right magic for NVMUpdate */
1141                 if ((eeprom->magic >> 16) != hw->device_id)
1142                         errno = -EINVAL;
1143                 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1144                          test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1145                         errno = -EBUSY;
1146                 else
1147                         ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1148
1149                 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1150                         dev_info(&pf->pdev->dev,
1151                                  "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1152                                  ret_val, hw->aq.asq_last_status, errno,
1153                                  (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1154                                  cmd->offset, cmd->data_size);
1155
1156                 return errno;
1157         }
1158
1159         /* normal ethtool get_eeprom support */
1160         eeprom->magic = hw->vendor_id | (hw->device_id << 16);
1161
1162         eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
1163         if (!eeprom_buff)
1164                 return -ENOMEM;
1165
1166         ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1167         if (ret_val) {
1168                 dev_info(&pf->pdev->dev,
1169                          "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1170                          ret_val, hw->aq.asq_last_status);
1171                 goto free_buff;
1172         }
1173
1174         sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
1175         sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
1176         len = I40E_NVM_SECTOR_SIZE;
1177         last = false;
1178         for (i = 0; i < sectors; i++) {
1179                 if (i == (sectors - 1)) {
1180                         len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
1181                         last = true;
1182                 }
1183                 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
1184                 ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
1185                                 (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1186                                 last, NULL);
1187                 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1188                         dev_info(&pf->pdev->dev,
1189                                  "read NVM failed, invalid offset 0x%x\n",
1190                                  offset);
1191                         break;
1192                 } else if (ret_val &&
1193                            hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
1194                         dev_info(&pf->pdev->dev,
1195                                  "read NVM failed, access, offset 0x%x\n",
1196                                  offset);
1197                         break;
1198                 } else if (ret_val) {
1199                         dev_info(&pf->pdev->dev,
1200                                  "read NVM failed offset %d err=%d status=0x%x\n",
1201                                  offset, ret_val, hw->aq.asq_last_status);
1202                         break;
1203                 }
1204         }
1205
1206         i40e_release_nvm(hw);
1207         memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1208 free_buff:
1209         kfree(eeprom_buff);
1210         return ret_val;
1211 }
1212
1213 static int i40e_get_eeprom_len(struct net_device *netdev)
1214 {
1215         struct i40e_netdev_priv *np = netdev_priv(netdev);
1216         struct i40e_hw *hw = &np->vsi->back->hw;
1217         u32 val;
1218
1219 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
1220         if (hw->mac.type == I40E_MAC_X722) {
1221                 val = X722_EEPROM_SCOPE_LIMIT + 1;
1222                 return val;
1223         }
1224         val = (rd32(hw, I40E_GLPCI_LBARCTRL)
1225                 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
1226                 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
1227         /* register returns value in power of 2, 64Kbyte chunks. */
1228         val = (64 * 1024) * BIT(val);
1229         return val;
1230 }
1231
1232 static int i40e_set_eeprom(struct net_device *netdev,
1233                            struct ethtool_eeprom *eeprom, u8 *bytes)
1234 {
1235         struct i40e_netdev_priv *np = netdev_priv(netdev);
1236         struct i40e_hw *hw = &np->vsi->back->hw;
1237         struct i40e_pf *pf = np->vsi->back;
1238         struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1239         int ret_val = 0;
1240         int errno = 0;
1241         u32 magic;
1242
1243         /* normal ethtool set_eeprom is not supported */
1244         magic = hw->vendor_id | (hw->device_id << 16);
1245         if (eeprom->magic == magic)
1246                 errno = -EOPNOTSUPP;
1247         /* check for NVMUpdate access method */
1248         else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
1249                 errno = -EINVAL;
1250         else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1251                  test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1252                 errno = -EBUSY;
1253         else
1254                 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1255
1256         if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1257                 dev_info(&pf->pdev->dev,
1258                          "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1259                          ret_val, hw->aq.asq_last_status, errno,
1260                          (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1261                          cmd->offset, cmd->data_size);
1262
1263         return errno;
1264 }
1265
1266 static void i40e_get_drvinfo(struct net_device *netdev,
1267                              struct ethtool_drvinfo *drvinfo)
1268 {
1269         struct i40e_netdev_priv *np = netdev_priv(netdev);
1270         struct i40e_vsi *vsi = np->vsi;
1271         struct i40e_pf *pf = vsi->back;
1272
1273         strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
1274         strlcpy(drvinfo->version, i40e_driver_version_str,
1275                 sizeof(drvinfo->version));
1276         strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw),
1277                 sizeof(drvinfo->fw_version));
1278         strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
1279                 sizeof(drvinfo->bus_info));
1280         drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
1281         if (pf->hw.pf_id == 0)
1282                 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
1283 }
1284
1285 static void i40e_get_ringparam(struct net_device *netdev,
1286                                struct ethtool_ringparam *ring)
1287 {
1288         struct i40e_netdev_priv *np = netdev_priv(netdev);
1289         struct i40e_pf *pf = np->vsi->back;
1290         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
1291
1292         ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1293         ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1294         ring->rx_mini_max_pending = 0;
1295         ring->rx_jumbo_max_pending = 0;
1296         ring->rx_pending = vsi->rx_rings[0]->count;
1297         ring->tx_pending = vsi->tx_rings[0]->count;
1298         ring->rx_mini_pending = 0;
1299         ring->rx_jumbo_pending = 0;
1300 }
1301
1302 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
1303 {
1304         if (i40e_enabled_xdp_vsi(vsi)) {
1305                 return index < vsi->num_queue_pairs ||
1306                         (index >= vsi->alloc_queue_pairs &&
1307                          index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
1308         }
1309
1310         return index < vsi->num_queue_pairs;
1311 }
1312
1313 static int i40e_set_ringparam(struct net_device *netdev,
1314                               struct ethtool_ringparam *ring)
1315 {
1316         struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
1317         struct i40e_netdev_priv *np = netdev_priv(netdev);
1318         struct i40e_hw *hw = &np->vsi->back->hw;
1319         struct i40e_vsi *vsi = np->vsi;
1320         struct i40e_pf *pf = vsi->back;
1321         u32 new_rx_count, new_tx_count;
1322         u16 tx_alloc_queue_pairs;
1323         int timeout = 50;
1324         int i, err = 0;
1325
1326         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
1327                 return -EINVAL;
1328
1329         if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1330             ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
1331             ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1332             ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
1333                 netdev_info(netdev,
1334                             "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
1335                             ring->tx_pending, ring->rx_pending,
1336                             I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
1337                 return -EINVAL;
1338         }
1339
1340         new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1341         new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1342
1343         /* if nothing to do return success */
1344         if ((new_tx_count == vsi->tx_rings[0]->count) &&
1345             (new_rx_count == vsi->rx_rings[0]->count))
1346                 return 0;
1347
1348         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1349                 timeout--;
1350                 if (!timeout)
1351                         return -EBUSY;
1352                 usleep_range(1000, 2000);
1353         }
1354
1355         if (!netif_running(vsi->netdev)) {
1356                 /* simple case - set for the next time the netdev is started */
1357                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1358                         vsi->tx_rings[i]->count = new_tx_count;
1359                         vsi->rx_rings[i]->count = new_rx_count;
1360                         if (i40e_enabled_xdp_vsi(vsi))
1361                                 vsi->xdp_rings[i]->count = new_tx_count;
1362                 }
1363                 goto done;
1364         }
1365
1366         /* We can't just free everything and then setup again,
1367          * because the ISRs in MSI-X mode get passed pointers
1368          * to the Tx and Rx ring structs.
1369          */
1370
1371         /* alloc updated Tx and XDP Tx resources */
1372         tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
1373                                (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
1374         if (new_tx_count != vsi->tx_rings[0]->count) {
1375                 netdev_info(netdev,
1376                             "Changing Tx descriptor count from %d to %d.\n",
1377                             vsi->tx_rings[0]->count, new_tx_count);
1378                 tx_rings = kcalloc(tx_alloc_queue_pairs,
1379                                    sizeof(struct i40e_ring), GFP_KERNEL);
1380                 if (!tx_rings) {
1381                         err = -ENOMEM;
1382                         goto done;
1383                 }
1384
1385                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
1386                         if (!i40e_active_tx_ring_index(vsi, i))
1387                                 continue;
1388
1389                         tx_rings[i] = *vsi->tx_rings[i];
1390                         tx_rings[i].count = new_tx_count;
1391                         /* the desc and bi pointers will be reallocated in the
1392                          * setup call
1393                          */
1394                         tx_rings[i].desc = NULL;
1395                         tx_rings[i].rx_bi = NULL;
1396                         err = i40e_setup_tx_descriptors(&tx_rings[i]);
1397                         if (err) {
1398                                 while (i) {
1399                                         i--;
1400                                         if (!i40e_active_tx_ring_index(vsi, i))
1401                                                 continue;
1402                                         i40e_free_tx_resources(&tx_rings[i]);
1403                                 }
1404                                 kfree(tx_rings);
1405                                 tx_rings = NULL;
1406
1407                                 goto done;
1408                         }
1409                 }
1410         }
1411
1412         /* alloc updated Rx resources */
1413         if (new_rx_count != vsi->rx_rings[0]->count) {
1414                 netdev_info(netdev,
1415                             "Changing Rx descriptor count from %d to %d\n",
1416                             vsi->rx_rings[0]->count, new_rx_count);
1417                 rx_rings = kcalloc(vsi->alloc_queue_pairs,
1418                                    sizeof(struct i40e_ring), GFP_KERNEL);
1419                 if (!rx_rings) {
1420                         err = -ENOMEM;
1421                         goto free_tx;
1422                 }
1423
1424                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1425                         struct i40e_ring *ring;
1426                         u16 unused;
1427
1428                         /* clone ring and setup updated count */
1429                         rx_rings[i] = *vsi->rx_rings[i];
1430                         rx_rings[i].count = new_rx_count;
1431                         /* the desc and bi pointers will be reallocated in the
1432                          * setup call
1433                          */
1434                         rx_rings[i].desc = NULL;
1435                         rx_rings[i].rx_bi = NULL;
1436                         /* this is to allow wr32 to have something to write to
1437                          * during early allocation of Rx buffers
1438                          */
1439                         rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
1440                         err = i40e_setup_rx_descriptors(&rx_rings[i]);
1441                         if (err)
1442                                 goto rx_unwind;
1443
1444                         /* now allocate the Rx buffers to make sure the OS
1445                          * has enough memory, any failure here means abort
1446                          */
1447                         ring = &rx_rings[i];
1448                         unused = I40E_DESC_UNUSED(ring);
1449                         err = i40e_alloc_rx_buffers(ring, unused);
1450 rx_unwind:
1451                         if (err) {
1452                                 do {
1453                                         i40e_free_rx_resources(&rx_rings[i]);
1454                                 } while (i--);
1455                                 kfree(rx_rings);
1456                                 rx_rings = NULL;
1457
1458                                 goto free_tx;
1459                         }
1460                 }
1461         }
1462
1463         /* Bring interface down, copy in the new ring info,
1464          * then restore the interface
1465          */
1466         i40e_down(vsi);
1467
1468         if (tx_rings) {
1469                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
1470                         if (i40e_active_tx_ring_index(vsi, i)) {
1471                                 i40e_free_tx_resources(vsi->tx_rings[i]);
1472                                 *vsi->tx_rings[i] = tx_rings[i];
1473                         }
1474                 }
1475                 kfree(tx_rings);
1476                 tx_rings = NULL;
1477         }
1478
1479         if (rx_rings) {
1480                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1481                         i40e_free_rx_resources(vsi->rx_rings[i]);
1482                         /* get the real tail offset */
1483                         rx_rings[i].tail = vsi->rx_rings[i]->tail;
1484                         /* this is to fake out the allocation routine
1485                          * into thinking it has to realloc everything
1486                          * but the recycling logic will let us re-use
1487                          * the buffers allocated above
1488                          */
1489                         rx_rings[i].next_to_use = 0;
1490                         rx_rings[i].next_to_clean = 0;
1491                         rx_rings[i].next_to_alloc = 0;
1492                         /* do a struct copy */
1493                         *vsi->rx_rings[i] = rx_rings[i];
1494                 }
1495                 kfree(rx_rings);
1496                 rx_rings = NULL;
1497         }
1498
1499         i40e_up(vsi);
1500
1501 free_tx:
1502         /* error cleanup if the Rx allocations failed after getting Tx */
1503         if (tx_rings) {
1504                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
1505                         if (i40e_active_tx_ring_index(vsi, i))
1506                                 i40e_free_tx_resources(vsi->tx_rings[i]);
1507                 }
1508                 kfree(tx_rings);
1509                 tx_rings = NULL;
1510         }
1511
1512 done:
1513         clear_bit(__I40E_CONFIG_BUSY, pf->state);
1514
1515         return err;
1516 }
1517
1518 static int i40e_get_sset_count(struct net_device *netdev, int sset)
1519 {
1520         struct i40e_netdev_priv *np = netdev_priv(netdev);
1521         struct i40e_vsi *vsi = np->vsi;
1522         struct i40e_pf *pf = vsi->back;
1523
1524         switch (sset) {
1525         case ETH_SS_TEST:
1526                 return I40E_TEST_LEN;
1527         case ETH_SS_STATS:
1528                 if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1) {
1529                         int len = I40E_PF_STATS_LEN(netdev);
1530
1531                         if ((pf->lan_veb != I40E_NO_VEB) &&
1532                             (pf->flags & I40E_FLAG_VEB_STATS_ENABLED))
1533                                 len += I40E_VEB_STATS_TOTAL;
1534                         return len;
1535                 } else {
1536                         return I40E_VSI_STATS_LEN(netdev);
1537                 }
1538         case ETH_SS_PRIV_FLAGS:
1539                 return I40E_PRIV_FLAGS_STR_LEN +
1540                         (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
1541         default:
1542                 return -EOPNOTSUPP;
1543         }
1544 }
1545
1546 static void i40e_get_ethtool_stats(struct net_device *netdev,
1547                                    struct ethtool_stats *stats, u64 *data)
1548 {
1549         struct i40e_netdev_priv *np = netdev_priv(netdev);
1550         struct i40e_ring *tx_ring, *rx_ring;
1551         struct i40e_vsi *vsi = np->vsi;
1552         struct i40e_pf *pf = vsi->back;
1553         unsigned int j;
1554         int i = 0;
1555         char *p;
1556         struct rtnl_link_stats64 *net_stats = i40e_get_vsi_stats_struct(vsi);
1557         unsigned int start;
1558
1559         i40e_update_stats(vsi);
1560
1561         for (j = 0; j < I40E_NETDEV_STATS_LEN; j++) {
1562                 p = (char *)net_stats + i40e_gstrings_net_stats[j].stat_offset;
1563                 data[i++] = (i40e_gstrings_net_stats[j].sizeof_stat ==
1564                         sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
1565         }
1566         for (j = 0; j < I40E_MISC_STATS_LEN; j++) {
1567                 p = (char *)vsi + i40e_gstrings_misc_stats[j].stat_offset;
1568                 data[i++] = (i40e_gstrings_misc_stats[j].sizeof_stat ==
1569                             sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
1570         }
1571         rcu_read_lock();
1572         for (j = 0; j < vsi->num_queue_pairs; j++) {
1573                 tx_ring = ACCESS_ONCE(vsi->tx_rings[j]);
1574
1575                 if (!tx_ring)
1576                         continue;
1577
1578                 /* process Tx ring statistics */
1579                 do {
1580                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
1581                         data[i] = tx_ring->stats.packets;
1582                         data[i + 1] = tx_ring->stats.bytes;
1583                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
1584                 i += 2;
1585
1586                 /* Rx ring is the 2nd half of the queue pair */
1587                 rx_ring = &tx_ring[1];
1588                 do {
1589                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
1590                         data[i] = rx_ring->stats.packets;
1591                         data[i + 1] = rx_ring->stats.bytes;
1592                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
1593                 i += 2;
1594         }
1595         rcu_read_unlock();
1596         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
1597                 return;
1598
1599         if ((pf->lan_veb != I40E_NO_VEB) &&
1600             (pf->flags & I40E_FLAG_VEB_STATS_ENABLED)) {
1601                 struct i40e_veb *veb = pf->veb[pf->lan_veb];
1602
1603                 for (j = 0; j < I40E_VEB_STATS_LEN; j++) {
1604                         p = (char *)veb;
1605                         p += i40e_gstrings_veb_stats[j].stat_offset;
1606                         data[i++] = (i40e_gstrings_veb_stats[j].sizeof_stat ==
1607                                      sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
1608                 }
1609                 for (j = 0; j < I40E_MAX_TRAFFIC_CLASS; j++) {
1610                         data[i++] = veb->tc_stats.tc_tx_packets[j];
1611                         data[i++] = veb->tc_stats.tc_tx_bytes[j];
1612                         data[i++] = veb->tc_stats.tc_rx_packets[j];
1613                         data[i++] = veb->tc_stats.tc_rx_bytes[j];
1614                 }
1615         }
1616         for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) {
1617                 p = (char *)pf + i40e_gstrings_stats[j].stat_offset;
1618                 data[i++] = (i40e_gstrings_stats[j].sizeof_stat ==
1619                              sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
1620         }
1621         for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
1622                 data[i++] = pf->stats.priority_xon_tx[j];
1623                 data[i++] = pf->stats.priority_xoff_tx[j];
1624         }
1625         for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
1626                 data[i++] = pf->stats.priority_xon_rx[j];
1627                 data[i++] = pf->stats.priority_xoff_rx[j];
1628         }
1629         for (j = 0; j < I40E_MAX_USER_PRIORITY; j++)
1630                 data[i++] = pf->stats.priority_xon_2_xoff[j];
1631 }
1632
1633 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
1634                              u8 *data)
1635 {
1636         struct i40e_netdev_priv *np = netdev_priv(netdev);
1637         struct i40e_vsi *vsi = np->vsi;
1638         struct i40e_pf *pf = vsi->back;
1639         char *p = (char *)data;
1640         unsigned int i;
1641
1642         switch (stringset) {
1643         case ETH_SS_TEST:
1644                 memcpy(data, i40e_gstrings_test,
1645                        I40E_TEST_LEN * ETH_GSTRING_LEN);
1646                 break;
1647         case ETH_SS_STATS:
1648                 for (i = 0; i < I40E_NETDEV_STATS_LEN; i++) {
1649                         snprintf(p, ETH_GSTRING_LEN, "%s",
1650                                  i40e_gstrings_net_stats[i].stat_string);
1651                         p += ETH_GSTRING_LEN;
1652                 }
1653                 for (i = 0; i < I40E_MISC_STATS_LEN; i++) {
1654                         snprintf(p, ETH_GSTRING_LEN, "%s",
1655                                  i40e_gstrings_misc_stats[i].stat_string);
1656                         p += ETH_GSTRING_LEN;
1657                 }
1658                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1659                         snprintf(p, ETH_GSTRING_LEN, "tx-%d.tx_packets", i);
1660                         p += ETH_GSTRING_LEN;
1661                         snprintf(p, ETH_GSTRING_LEN, "tx-%d.tx_bytes", i);
1662                         p += ETH_GSTRING_LEN;
1663                         snprintf(p, ETH_GSTRING_LEN, "rx-%d.rx_packets", i);
1664                         p += ETH_GSTRING_LEN;
1665                         snprintf(p, ETH_GSTRING_LEN, "rx-%d.rx_bytes", i);
1666                         p += ETH_GSTRING_LEN;
1667                 }
1668                 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
1669                         return;
1670
1671                 if ((pf->lan_veb != I40E_NO_VEB) &&
1672                     (pf->flags & I40E_FLAG_VEB_STATS_ENABLED)) {
1673                         for (i = 0; i < I40E_VEB_STATS_LEN; i++) {
1674                                 snprintf(p, ETH_GSTRING_LEN, "veb.%s",
1675                                         i40e_gstrings_veb_stats[i].stat_string);
1676                                 p += ETH_GSTRING_LEN;
1677                         }
1678                         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1679                                 snprintf(p, ETH_GSTRING_LEN,
1680                                          "veb.tc_%d_tx_packets", i);
1681                                 p += ETH_GSTRING_LEN;
1682                                 snprintf(p, ETH_GSTRING_LEN,
1683                                          "veb.tc_%d_tx_bytes", i);
1684                                 p += ETH_GSTRING_LEN;
1685                                 snprintf(p, ETH_GSTRING_LEN,
1686                                          "veb.tc_%d_rx_packets", i);
1687                                 p += ETH_GSTRING_LEN;
1688                                 snprintf(p, ETH_GSTRING_LEN,
1689                                          "veb.tc_%d_rx_bytes", i);
1690                                 p += ETH_GSTRING_LEN;
1691                         }
1692                 }
1693                 for (i = 0; i < I40E_GLOBAL_STATS_LEN; i++) {
1694                         snprintf(p, ETH_GSTRING_LEN, "port.%s",
1695                                  i40e_gstrings_stats[i].stat_string);
1696                         p += ETH_GSTRING_LEN;
1697                 }
1698                 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
1699                         snprintf(p, ETH_GSTRING_LEN,
1700                                  "port.tx_priority_%d_xon", i);
1701                         p += ETH_GSTRING_LEN;
1702                         snprintf(p, ETH_GSTRING_LEN,
1703                                  "port.tx_priority_%d_xoff", i);
1704                         p += ETH_GSTRING_LEN;
1705                 }
1706                 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
1707                         snprintf(p, ETH_GSTRING_LEN,
1708                                  "port.rx_priority_%d_xon", i);
1709                         p += ETH_GSTRING_LEN;
1710                         snprintf(p, ETH_GSTRING_LEN,
1711                                  "port.rx_priority_%d_xoff", i);
1712                         p += ETH_GSTRING_LEN;
1713                 }
1714                 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
1715                         snprintf(p, ETH_GSTRING_LEN,
1716                                  "port.rx_priority_%d_xon_2_xoff", i);
1717                         p += ETH_GSTRING_LEN;
1718                 }
1719                 /* BUG_ON(p - data != I40E_STATS_LEN * ETH_GSTRING_LEN); */
1720                 break;
1721         case ETH_SS_PRIV_FLAGS:
1722                 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
1723                         snprintf(p, ETH_GSTRING_LEN, "%s",
1724                                  i40e_gstrings_priv_flags[i].flag_string);
1725                         p += ETH_GSTRING_LEN;
1726                 }
1727                 if (pf->hw.pf_id != 0)
1728                         break;
1729                 for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++) {
1730                         snprintf(p, ETH_GSTRING_LEN, "%s",
1731                                  i40e_gl_gstrings_priv_flags[i].flag_string);
1732                         p += ETH_GSTRING_LEN;
1733                 }
1734                 break;
1735         default:
1736                 break;
1737         }
1738 }
1739
1740 static int i40e_get_ts_info(struct net_device *dev,
1741                             struct ethtool_ts_info *info)
1742 {
1743         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
1744
1745         /* only report HW timestamping if PTP is enabled */
1746         if (!(pf->flags & I40E_FLAG_PTP))
1747                 return ethtool_op_get_ts_info(dev, info);
1748
1749         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
1750                                 SOF_TIMESTAMPING_RX_SOFTWARE |
1751                                 SOF_TIMESTAMPING_SOFTWARE |
1752                                 SOF_TIMESTAMPING_TX_HARDWARE |
1753                                 SOF_TIMESTAMPING_RX_HARDWARE |
1754                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1755
1756         if (pf->ptp_clock)
1757                 info->phc_index = ptp_clock_index(pf->ptp_clock);
1758         else
1759                 info->phc_index = -1;
1760
1761         info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
1762
1763         info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
1764                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
1765                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
1766                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
1767
1768         if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
1769                 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
1770                                     BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
1771                                     BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
1772                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
1773                                     BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
1774                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
1775                                     BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
1776                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
1777
1778         return 0;
1779 }
1780
1781 static int i40e_link_test(struct net_device *netdev, u64 *data)
1782 {
1783         struct i40e_netdev_priv *np = netdev_priv(netdev);
1784         struct i40e_pf *pf = np->vsi->back;
1785         i40e_status status;
1786         bool link_up = false;
1787
1788         netif_info(pf, hw, netdev, "link test\n");
1789         status = i40e_get_link_status(&pf->hw, &link_up);
1790         if (status) {
1791                 netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
1792                 *data = 1;
1793                 return *data;
1794         }
1795
1796         if (link_up)
1797                 *data = 0;
1798         else
1799                 *data = 1;
1800
1801         return *data;
1802 }
1803
1804 static int i40e_reg_test(struct net_device *netdev, u64 *data)
1805 {
1806         struct i40e_netdev_priv *np = netdev_priv(netdev);
1807         struct i40e_pf *pf = np->vsi->back;
1808
1809         netif_info(pf, hw, netdev, "register test\n");
1810         *data = i40e_diag_reg_test(&pf->hw);
1811
1812         return *data;
1813 }
1814
1815 static int i40e_eeprom_test(struct net_device *netdev, u64 *data)
1816 {
1817         struct i40e_netdev_priv *np = netdev_priv(netdev);
1818         struct i40e_pf *pf = np->vsi->back;
1819
1820         netif_info(pf, hw, netdev, "eeprom test\n");
1821         *data = i40e_diag_eeprom_test(&pf->hw);
1822
1823         /* forcebly clear the NVM Update state machine */
1824         pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
1825
1826         return *data;
1827 }
1828
1829 static int i40e_intr_test(struct net_device *netdev, u64 *data)
1830 {
1831         struct i40e_netdev_priv *np = netdev_priv(netdev);
1832         struct i40e_pf *pf = np->vsi->back;
1833         u16 swc_old = pf->sw_int_count;
1834
1835         netif_info(pf, hw, netdev, "interrupt test\n");
1836         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
1837              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
1838               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
1839               I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
1840               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
1841               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
1842         usleep_range(1000, 2000);
1843         *data = (swc_old == pf->sw_int_count);
1844
1845         return *data;
1846 }
1847
1848 static inline bool i40e_active_vfs(struct i40e_pf *pf)
1849 {
1850         struct i40e_vf *vfs = pf->vf;
1851         int i;
1852
1853         for (i = 0; i < pf->num_alloc_vfs; i++)
1854                 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
1855                         return true;
1856         return false;
1857 }
1858
1859 static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
1860 {
1861         return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
1862 }
1863
1864 static void i40e_diag_test(struct net_device *netdev,
1865                            struct ethtool_test *eth_test, u64 *data)
1866 {
1867         struct i40e_netdev_priv *np = netdev_priv(netdev);
1868         bool if_running = netif_running(netdev);
1869         struct i40e_pf *pf = np->vsi->back;
1870
1871         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
1872                 /* Offline tests */
1873                 netif_info(pf, drv, netdev, "offline testing starting\n");
1874
1875                 set_bit(__I40E_TESTING, pf->state);
1876
1877                 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
1878                         dev_warn(&pf->pdev->dev,
1879                                  "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
1880                         data[I40E_ETH_TEST_REG]         = 1;
1881                         data[I40E_ETH_TEST_EEPROM]      = 1;
1882                         data[I40E_ETH_TEST_INTR]        = 1;
1883                         data[I40E_ETH_TEST_LINK]        = 1;
1884                         eth_test->flags |= ETH_TEST_FL_FAILED;
1885                         clear_bit(__I40E_TESTING, pf->state);
1886                         goto skip_ol_tests;
1887                 }
1888
1889                 /* If the device is online then take it offline */
1890                 if (if_running)
1891                         /* indicate we're in test mode */
1892                         i40e_close(netdev);
1893                 else
1894                         /* This reset does not affect link - if it is
1895                          * changed to a type of reset that does affect
1896                          * link then the following link test would have
1897                          * to be moved to before the reset
1898                          */
1899                         i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
1900
1901                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
1902                         eth_test->flags |= ETH_TEST_FL_FAILED;
1903
1904                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
1905                         eth_test->flags |= ETH_TEST_FL_FAILED;
1906
1907                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
1908                         eth_test->flags |= ETH_TEST_FL_FAILED;
1909
1910                 /* run reg test last, a reset is required after it */
1911                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
1912                         eth_test->flags |= ETH_TEST_FL_FAILED;
1913
1914                 clear_bit(__I40E_TESTING, pf->state);
1915                 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
1916
1917                 if (if_running)
1918                         i40e_open(netdev);
1919         } else {
1920                 /* Online tests */
1921                 netif_info(pf, drv, netdev, "online testing starting\n");
1922
1923                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
1924                         eth_test->flags |= ETH_TEST_FL_FAILED;
1925
1926                 /* Offline only tests, not run in online; pass by default */
1927                 data[I40E_ETH_TEST_REG] = 0;
1928                 data[I40E_ETH_TEST_EEPROM] = 0;
1929                 data[I40E_ETH_TEST_INTR] = 0;
1930         }
1931
1932 skip_ol_tests:
1933
1934         netif_info(pf, drv, netdev, "testing finished\n");
1935 }
1936
1937 static void i40e_get_wol(struct net_device *netdev,
1938                          struct ethtool_wolinfo *wol)
1939 {
1940         struct i40e_netdev_priv *np = netdev_priv(netdev);
1941         struct i40e_pf *pf = np->vsi->back;
1942         struct i40e_hw *hw = &pf->hw;
1943         u16 wol_nvm_bits;
1944
1945         /* NVM bit on means WoL disabled for the port */
1946         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
1947         if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
1948                 wol->supported = 0;
1949                 wol->wolopts = 0;
1950         } else {
1951                 wol->supported = WAKE_MAGIC;
1952                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
1953         }
1954 }
1955
1956 /**
1957  * i40e_set_wol - set the WakeOnLAN configuration
1958  * @netdev: the netdev in question
1959  * @wol: the ethtool WoL setting data
1960  **/
1961 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
1962 {
1963         struct i40e_netdev_priv *np = netdev_priv(netdev);
1964         struct i40e_pf *pf = np->vsi->back;
1965         struct i40e_vsi *vsi = np->vsi;
1966         struct i40e_hw *hw = &pf->hw;
1967         u16 wol_nvm_bits;
1968
1969         /* WoL not supported if this isn't the controlling PF on the port */
1970         if (hw->partition_id != 1) {
1971                 i40e_partition_setting_complaint(pf);
1972                 return -EOPNOTSUPP;
1973         }
1974
1975         if (vsi != pf->vsi[pf->lan_vsi])
1976                 return -EOPNOTSUPP;
1977
1978         /* NVM bit on means WoL disabled for the port */
1979         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
1980         if (BIT(hw->port) & wol_nvm_bits)
1981                 return -EOPNOTSUPP;
1982
1983         /* only magic packet is supported */
1984         if (wol->wolopts && (wol->wolopts != WAKE_MAGIC))
1985                 return -EOPNOTSUPP;
1986
1987         /* is this a new value? */
1988         if (pf->wol_en != !!wol->wolopts) {
1989                 pf->wol_en = !!wol->wolopts;
1990                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
1991         }
1992
1993         return 0;
1994 }
1995
1996 static int i40e_set_phys_id(struct net_device *netdev,
1997                             enum ethtool_phys_id_state state)
1998 {
1999         struct i40e_netdev_priv *np = netdev_priv(netdev);
2000         i40e_status ret = 0;
2001         struct i40e_pf *pf = np->vsi->back;
2002         struct i40e_hw *hw = &pf->hw;
2003         int blink_freq = 2;
2004         u16 temp_status;
2005
2006         switch (state) {
2007         case ETHTOOL_ID_ACTIVE:
2008                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2009                         pf->led_status = i40e_led_get(hw);
2010                 } else {
2011                         i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL, NULL);
2012                         ret = i40e_led_get_phy(hw, &temp_status,
2013                                                &pf->phy_led_val);
2014                         pf->led_status = temp_status;
2015                 }
2016                 return blink_freq;
2017         case ETHTOOL_ID_ON:
2018                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2019                         i40e_led_set(hw, 0xf, false);
2020                 else
2021                         ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
2022                 break;
2023         case ETHTOOL_ID_OFF:
2024                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2025                         i40e_led_set(hw, 0x0, false);
2026                 else
2027                         ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
2028                 break;
2029         case ETHTOOL_ID_INACTIVE:
2030                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2031                         i40e_led_set(hw, pf->led_status, false);
2032                 } else {
2033                         ret = i40e_led_set_phy(hw, false, pf->led_status,
2034                                                (pf->phy_led_val |
2035                                                I40E_PHY_LED_MODE_ORIG));
2036                         i40e_aq_set_phy_debug(hw, 0, NULL);
2037                 }
2038                 break;
2039         default:
2040                 break;
2041         }
2042                 if (ret)
2043                         return -ENOENT;
2044                 else
2045                         return 0;
2046 }
2047
2048 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
2049  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
2050  * 125us (8000 interrupts per second) == ITR(62)
2051  */
2052
2053 /**
2054  * __i40e_get_coalesce - get per-queue coalesce settings
2055  * @netdev: the netdev to check
2056  * @ec: ethtool coalesce data structure
2057  * @queue: which queue to pick
2058  *
2059  * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
2060  * are per queue. If queue is <0 then we default to queue 0 as the
2061  * representative value.
2062  **/
2063 static int __i40e_get_coalesce(struct net_device *netdev,
2064                                struct ethtool_coalesce *ec,
2065                                int queue)
2066 {
2067         struct i40e_netdev_priv *np = netdev_priv(netdev);
2068         struct i40e_ring *rx_ring, *tx_ring;
2069         struct i40e_vsi *vsi = np->vsi;
2070
2071         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
2072         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
2073
2074         /* rx and tx usecs has per queue value. If user doesn't specify the queue,
2075          * return queue 0's value to represent.
2076          */
2077         if (queue < 0) {
2078                 queue = 0;
2079         } else if (queue >= vsi->num_queue_pairs) {
2080                 return -EINVAL;
2081         }
2082
2083         rx_ring = vsi->rx_rings[queue];
2084         tx_ring = vsi->tx_rings[queue];
2085
2086         if (ITR_IS_DYNAMIC(rx_ring->rx_itr_setting))
2087                 ec->use_adaptive_rx_coalesce = 1;
2088
2089         if (ITR_IS_DYNAMIC(tx_ring->tx_itr_setting))
2090                 ec->use_adaptive_tx_coalesce = 1;
2091
2092         ec->rx_coalesce_usecs = rx_ring->rx_itr_setting & ~I40E_ITR_DYNAMIC;
2093         ec->tx_coalesce_usecs = tx_ring->tx_itr_setting & ~I40E_ITR_DYNAMIC;
2094
2095
2096         /* we use the _usecs_high to store/set the interrupt rate limit
2097          * that the hardware supports, that almost but not quite
2098          * fits the original intent of the ethtool variable,
2099          * the rx_coalesce_usecs_high limits total interrupts
2100          * per second from both tx/rx sources.
2101          */
2102         ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
2103         ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
2104
2105         return 0;
2106 }
2107
2108 /**
2109  * i40e_get_coalesce - get a netdev's coalesce settings
2110  * @netdev: the netdev to check
2111  * @ec: ethtool coalesce data structure
2112  *
2113  * Gets the coalesce settings for a particular netdev. Note that if user has
2114  * modified per-queue settings, this only guarantees to represent queue 0. See
2115  * __i40e_get_coalesce for more details.
2116  **/
2117 static int i40e_get_coalesce(struct net_device *netdev,
2118                              struct ethtool_coalesce *ec)
2119 {
2120         return __i40e_get_coalesce(netdev, ec, -1);
2121 }
2122
2123 /**
2124  * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
2125  * @netdev: netdev structure
2126  * @ec: ethtool's coalesce settings
2127  * @queue: the particular queue to read
2128  *
2129  * Will read a specific queue's coalesce settings
2130  **/
2131 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
2132                                        struct ethtool_coalesce *ec)
2133 {
2134         return __i40e_get_coalesce(netdev, ec, queue);
2135 }
2136
2137 /**
2138  * i40e_set_itr_per_queue - set ITR values for specific queue
2139  * @vsi: the VSI to set values for
2140  * @ec: coalesce settings from ethtool
2141  * @queue: the queue to modify
2142  *
2143  * Change the ITR settings for a specific queue.
2144  **/
2145
2146 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
2147                                    struct ethtool_coalesce *ec,
2148                                    int queue)
2149 {
2150         struct i40e_pf *pf = vsi->back;
2151         struct i40e_hw *hw = &pf->hw;
2152         struct i40e_q_vector *q_vector;
2153         u16 vector, intrl;
2154
2155         intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
2156
2157         vsi->rx_rings[queue]->rx_itr_setting = ec->rx_coalesce_usecs;
2158         vsi->tx_rings[queue]->tx_itr_setting = ec->tx_coalesce_usecs;
2159
2160         if (ec->use_adaptive_rx_coalesce)
2161                 vsi->rx_rings[queue]->rx_itr_setting |= I40E_ITR_DYNAMIC;
2162         else
2163                 vsi->rx_rings[queue]->rx_itr_setting &= ~I40E_ITR_DYNAMIC;
2164
2165         if (ec->use_adaptive_tx_coalesce)
2166                 vsi->tx_rings[queue]->tx_itr_setting |= I40E_ITR_DYNAMIC;
2167         else
2168                 vsi->tx_rings[queue]->tx_itr_setting &= ~I40E_ITR_DYNAMIC;
2169
2170         q_vector = vsi->rx_rings[queue]->q_vector;
2171         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[queue]->rx_itr_setting);
2172         vector = vsi->base_vector + q_vector->v_idx;
2173         wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1), q_vector->rx.itr);
2174
2175         q_vector = vsi->tx_rings[queue]->q_vector;
2176         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[queue]->tx_itr_setting);
2177         vector = vsi->base_vector + q_vector->v_idx;
2178         wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1), q_vector->tx.itr);
2179
2180         wr32(hw, I40E_PFINT_RATEN(vector - 1), intrl);
2181         i40e_flush(hw);
2182 }
2183
2184 /**
2185  * __i40e_set_coalesce - set coalesce settings for particular queue
2186  * @netdev: the netdev to change
2187  * @ec: ethtool coalesce settings
2188  * @queue: the queue to change
2189  *
2190  * Sets the coalesce settings for a particular queue.
2191  **/
2192 static int __i40e_set_coalesce(struct net_device *netdev,
2193                                struct ethtool_coalesce *ec,
2194                                int queue)
2195 {
2196         struct i40e_netdev_priv *np = netdev_priv(netdev);
2197         u16 intrl_reg, cur_rx_itr, cur_tx_itr;
2198         struct i40e_vsi *vsi = np->vsi;
2199         struct i40e_pf *pf = vsi->back;
2200         int i;
2201
2202         if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
2203                 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
2204
2205         if (queue < 0) {
2206                 cur_rx_itr = vsi->rx_rings[0]->rx_itr_setting;
2207                 cur_tx_itr = vsi->tx_rings[0]->tx_itr_setting;
2208         } else if (queue < vsi->num_queue_pairs) {
2209                 cur_rx_itr = vsi->rx_rings[queue]->rx_itr_setting;
2210                 cur_tx_itr = vsi->tx_rings[queue]->tx_itr_setting;
2211         } else {
2212                 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
2213                            vsi->num_queue_pairs - 1);
2214                 return -EINVAL;
2215         }
2216
2217         cur_tx_itr &= ~I40E_ITR_DYNAMIC;
2218         cur_rx_itr &= ~I40E_ITR_DYNAMIC;
2219
2220         /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
2221         if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
2222                 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
2223                 return -EINVAL;
2224         }
2225
2226         if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
2227                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
2228                            INTRL_REG_TO_USEC(I40E_MAX_INTRL));
2229                 return -EINVAL;
2230         }
2231
2232         if (ec->rx_coalesce_usecs != cur_rx_itr &&
2233             ec->use_adaptive_rx_coalesce) {
2234                 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
2235                 return -EINVAL;
2236         }
2237
2238         if (ec->rx_coalesce_usecs > (I40E_MAX_ITR << 1)) {
2239                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
2240                 return -EINVAL;
2241         }
2242
2243         if (ec->tx_coalesce_usecs != cur_tx_itr &&
2244             ec->use_adaptive_tx_coalesce) {
2245                 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
2246                 return -EINVAL;
2247         }
2248
2249         if (ec->tx_coalesce_usecs > (I40E_MAX_ITR << 1)) {
2250                 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
2251                 return -EINVAL;
2252         }
2253
2254         if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
2255                 ec->rx_coalesce_usecs = I40E_MIN_ITR << 1;
2256
2257         if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
2258                 ec->tx_coalesce_usecs = I40E_MIN_ITR << 1;
2259
2260         intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
2261         vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
2262         if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
2263                 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
2264                            vsi->int_rate_limit);
2265         }
2266
2267         /* rx and tx usecs has per queue value. If user doesn't specify the queue,
2268          * apply to all queues.
2269          */
2270         if (queue < 0) {
2271                 for (i = 0; i < vsi->num_queue_pairs; i++)
2272                         i40e_set_itr_per_queue(vsi, ec, i);
2273         } else {
2274                 i40e_set_itr_per_queue(vsi, ec, queue);
2275         }
2276
2277         return 0;
2278 }
2279
2280 /**
2281  * i40e_set_coalesce - set coalesce settings for every queue on the netdev
2282  * @netdev: the netdev to change
2283  * @ec: ethtool coalesce settings
2284  *
2285  * This will set each queue to the same coalesce settings.
2286  **/
2287 static int i40e_set_coalesce(struct net_device *netdev,
2288                              struct ethtool_coalesce *ec)
2289 {
2290         return __i40e_set_coalesce(netdev, ec, -1);
2291 }
2292
2293 /**
2294  * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
2295  * @netdev: the netdev to change
2296  * @ec: ethtool's coalesce settings
2297  * @queue: the queue to change
2298  *
2299  * Sets the specified queue's coalesce settings.
2300  **/
2301 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
2302                                        struct ethtool_coalesce *ec)
2303 {
2304         return __i40e_set_coalesce(netdev, ec, queue);
2305 }
2306
2307 /**
2308  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
2309  * @pf: pointer to the physical function struct
2310  * @cmd: ethtool rxnfc command
2311  *
2312  * Returns Success if the flow is supported, else Invalid Input.
2313  **/
2314 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
2315 {
2316         struct i40e_hw *hw = &pf->hw;
2317         u8 flow_pctype = 0;
2318         u64 i_set = 0;
2319
2320         cmd->data = 0;
2321
2322         switch (cmd->flow_type) {
2323         case TCP_V4_FLOW:
2324                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
2325                 break;
2326         case UDP_V4_FLOW:
2327                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
2328                 break;
2329         case TCP_V6_FLOW:
2330                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
2331                 break;
2332         case UDP_V6_FLOW:
2333                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
2334                 break;
2335         case SCTP_V4_FLOW:
2336         case AH_ESP_V4_FLOW:
2337         case AH_V4_FLOW:
2338         case ESP_V4_FLOW:
2339         case IPV4_FLOW:
2340         case SCTP_V6_FLOW:
2341         case AH_ESP_V6_FLOW:
2342         case AH_V6_FLOW:
2343         case ESP_V6_FLOW:
2344         case IPV6_FLOW:
2345                 /* Default is src/dest for IP, no matter the L4 hashing */
2346                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
2347                 break;
2348         default:
2349                 return -EINVAL;
2350         }
2351
2352         /* Read flow based hash input set register */
2353         if (flow_pctype) {
2354                 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
2355                                               flow_pctype)) |
2356                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
2357                                                flow_pctype)) << 32);
2358         }
2359
2360         /* Process bits of hash input set */
2361         if (i_set) {
2362                 if (i_set & I40E_L4_SRC_MASK)
2363                         cmd->data |= RXH_L4_B_0_1;
2364                 if (i_set & I40E_L4_DST_MASK)
2365                         cmd->data |= RXH_L4_B_2_3;
2366
2367                 if (cmd->flow_type == TCP_V4_FLOW ||
2368                     cmd->flow_type == UDP_V4_FLOW) {
2369                         if (i_set & I40E_L3_SRC_MASK)
2370                                 cmd->data |= RXH_IP_SRC;
2371                         if (i_set & I40E_L3_DST_MASK)
2372                                 cmd->data |= RXH_IP_DST;
2373                 } else if (cmd->flow_type == TCP_V6_FLOW ||
2374                           cmd->flow_type == UDP_V6_FLOW) {
2375                         if (i_set & I40E_L3_V6_SRC_MASK)
2376                                 cmd->data |= RXH_IP_SRC;
2377                         if (i_set & I40E_L3_V6_DST_MASK)
2378                                 cmd->data |= RXH_IP_DST;
2379                 }
2380         }
2381
2382         return 0;
2383 }
2384
2385 /**
2386  * i40e_check_mask - Check whether a mask field is set
2387  * @mask: the full mask value
2388  * @field; mask of the field to check
2389  *
2390  * If the given mask is fully set, return positive value. If the mask for the
2391  * field is fully unset, return zero. Otherwise return a negative error code.
2392  **/
2393 static int i40e_check_mask(u64 mask, u64 field)
2394 {
2395         u64 value = mask & field;
2396
2397         if (value == field)
2398                 return 1;
2399         else if (!value)
2400                 return 0;
2401         else
2402                 return -1;
2403 }
2404
2405 /**
2406  * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
2407  * @fsp: pointer to rx flow specification
2408  * @data: pointer to userdef data structure for storage
2409  *
2410  * Read the user-defined data and deconstruct the value into a structure. No
2411  * other code should read the user-defined data, so as to ensure that every
2412  * place consistently reads the value correctly.
2413  *
2414  * The user-defined field is a 64bit Big Endian format value, which we
2415  * deconstruct by reading bits or bit fields from it. Single bit flags shall
2416  * be defined starting from the highest bits, while small bit field values
2417  * shall be defined starting from the lowest bits.
2418  *
2419  * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
2420  * and the filter should be rejected. The data structure will always be
2421  * modified even if FLOW_EXT is not set.
2422  *
2423  **/
2424 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
2425                                         struct i40e_rx_flow_userdef *data)
2426 {
2427         u64 value, mask;
2428         int valid;
2429
2430         /* Zero memory first so it's always consistent. */
2431         memset(data, 0, sizeof(*data));
2432
2433         if (!(fsp->flow_type & FLOW_EXT))
2434                 return 0;
2435
2436         value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
2437         mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
2438
2439 #define I40E_USERDEF_FLEX_WORD          GENMASK_ULL(15, 0)
2440 #define I40E_USERDEF_FLEX_OFFSET        GENMASK_ULL(31, 16)
2441 #define I40E_USERDEF_FLEX_FILTER        GENMASK_ULL(31, 0)
2442
2443         valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
2444         if (valid < 0) {
2445                 return -EINVAL;
2446         } else if (valid) {
2447                 data->flex_word = value & I40E_USERDEF_FLEX_WORD;
2448                 data->flex_offset =
2449                         (value & I40E_USERDEF_FLEX_OFFSET) >> 16;
2450                 data->flex_filter = true;
2451         }
2452
2453         return 0;
2454 }
2455
2456 /**
2457  * i40e_fill_rx_flow_user_data - Fill in user-defined data field
2458  * @fsp: pointer to rx_flow specification
2459  *
2460  * Reads the userdef data structure and properly fills in the user defined
2461  * fields of the rx_flow_spec.
2462  **/
2463 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
2464                                         struct i40e_rx_flow_userdef *data)
2465 {
2466         u64 value = 0, mask = 0;
2467
2468         if (data->flex_filter) {
2469                 value |= data->flex_word;
2470                 value |= (u64)data->flex_offset << 16;
2471                 mask |= I40E_USERDEF_FLEX_FILTER;
2472         }
2473
2474         if (value || mask)
2475                 fsp->flow_type |= FLOW_EXT;
2476
2477         *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
2478         *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
2479 }
2480
2481 /**
2482  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
2483  * @pf: Pointer to the physical function struct
2484  * @cmd: The command to get or set Rx flow classification rules
2485  * @rule_locs: Array of used rule locations
2486  *
2487  * This function populates both the total and actual rule count of
2488  * the ethtool flow classification command
2489  *
2490  * Returns 0 on success or -EMSGSIZE if entry not found
2491  **/
2492 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
2493                                      struct ethtool_rxnfc *cmd,
2494                                      u32 *rule_locs)
2495 {
2496         struct i40e_fdir_filter *rule;
2497         struct hlist_node *node2;
2498         int cnt = 0;
2499
2500         /* report total rule count */
2501         cmd->data = i40e_get_fd_cnt_all(pf);
2502
2503         hlist_for_each_entry_safe(rule, node2,
2504                                   &pf->fdir_filter_list, fdir_node) {
2505                 if (cnt == cmd->rule_cnt)
2506                         return -EMSGSIZE;
2507
2508                 rule_locs[cnt] = rule->fd_id;
2509                 cnt++;
2510         }
2511
2512         cmd->rule_cnt = cnt;
2513
2514         return 0;
2515 }
2516
2517 /**
2518  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
2519  * @pf: Pointer to the physical function struct
2520  * @cmd: The command to get or set Rx flow classification rules
2521  *
2522  * This function looks up a filter based on the Rx flow classification
2523  * command and fills the flow spec info for it if found
2524  *
2525  * Returns 0 on success or -EINVAL if filter not found
2526  **/
2527 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
2528                                        struct ethtool_rxnfc *cmd)
2529 {
2530         struct ethtool_rx_flow_spec *fsp =
2531                         (struct ethtool_rx_flow_spec *)&cmd->fs;
2532         struct i40e_rx_flow_userdef userdef = {0};
2533         struct i40e_fdir_filter *rule = NULL;
2534         struct hlist_node *node2;
2535         u64 input_set;
2536         u16 index;
2537
2538         hlist_for_each_entry_safe(rule, node2,
2539                                   &pf->fdir_filter_list, fdir_node) {
2540                 if (fsp->location <= rule->fd_id)
2541                         break;
2542         }
2543
2544         if (!rule || fsp->location != rule->fd_id)
2545                 return -EINVAL;
2546
2547         fsp->flow_type = rule->flow_type;
2548         if (fsp->flow_type == IP_USER_FLOW) {
2549                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
2550                 fsp->h_u.usr_ip4_spec.proto = 0;
2551                 fsp->m_u.usr_ip4_spec.proto = 0;
2552         }
2553
2554         /* Reverse the src and dest notion, since the HW views them from
2555          * Tx perspective where as the user expects it from Rx filter view.
2556          */
2557         fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
2558         fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
2559         fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
2560         fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
2561
2562         switch (rule->flow_type) {
2563         case SCTP_V4_FLOW:
2564                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
2565                 break;
2566         case TCP_V4_FLOW:
2567                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
2568                 break;
2569         case UDP_V4_FLOW:
2570                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
2571                 break;
2572         case IP_USER_FLOW:
2573                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
2574                 break;
2575         default:
2576                 /* If we have stored a filter with a flow type not listed here
2577                  * it is almost certainly a driver bug. WARN(), and then
2578                  * assign the input_set as if all fields are enabled to avoid
2579                  * reading unassigned memory.
2580                  */
2581                 WARN(1, "Missing input set index for flow_type %d\n",
2582                      rule->flow_type);
2583                 input_set = 0xFFFFFFFFFFFFFFFFULL;
2584                 goto no_input_set;
2585         }
2586
2587         input_set = i40e_read_fd_input_set(pf, index);
2588
2589 no_input_set:
2590         if (input_set & I40E_L3_SRC_MASK)
2591                 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
2592
2593         if (input_set & I40E_L3_DST_MASK)
2594                 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
2595
2596         if (input_set & I40E_L4_SRC_MASK)
2597                 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
2598
2599         if (input_set & I40E_L4_DST_MASK)
2600                 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
2601
2602         if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
2603                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
2604         else
2605                 fsp->ring_cookie = rule->q_index;
2606
2607         if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
2608                 struct i40e_vsi *vsi;
2609
2610                 vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
2611                 if (vsi && vsi->type == I40E_VSI_SRIOV) {
2612                         /* VFs are zero-indexed by the driver, but ethtool
2613                          * expects them to be one-indexed, so add one here
2614                          */
2615                         u64 ring_vf = vsi->vf_id + 1;
2616
2617                         ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
2618                         fsp->ring_cookie |= ring_vf;
2619                 }
2620         }
2621
2622         if (rule->flex_filter) {
2623                 userdef.flex_filter = true;
2624                 userdef.flex_word = be16_to_cpu(rule->flex_word);
2625                 userdef.flex_offset = rule->flex_offset;
2626         }
2627
2628         i40e_fill_rx_flow_user_data(fsp, &userdef);
2629
2630         return 0;
2631 }
2632
2633 /**
2634  * i40e_get_rxnfc - command to get RX flow classification rules
2635  * @netdev: network interface device structure
2636  * @cmd: ethtool rxnfc command
2637  *
2638  * Returns Success if the command is supported.
2639  **/
2640 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
2641                           u32 *rule_locs)
2642 {
2643         struct i40e_netdev_priv *np = netdev_priv(netdev);
2644         struct i40e_vsi *vsi = np->vsi;
2645         struct i40e_pf *pf = vsi->back;
2646         int ret = -EOPNOTSUPP;
2647
2648         switch (cmd->cmd) {
2649         case ETHTOOL_GRXRINGS:
2650                 cmd->data = vsi->num_queue_pairs;
2651                 ret = 0;
2652                 break;
2653         case ETHTOOL_GRXFH:
2654                 ret = i40e_get_rss_hash_opts(pf, cmd);
2655                 break;
2656         case ETHTOOL_GRXCLSRLCNT:
2657                 cmd->rule_cnt = pf->fdir_pf_active_filters;
2658                 /* report total rule count */
2659                 cmd->data = i40e_get_fd_cnt_all(pf);
2660                 ret = 0;
2661                 break;
2662         case ETHTOOL_GRXCLSRULE:
2663                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
2664                 break;
2665         case ETHTOOL_GRXCLSRLALL:
2666                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
2667                 break;
2668         default:
2669                 break;
2670         }
2671
2672         return ret;
2673 }
2674
2675 /**
2676  * i40e_get_rss_hash_bits - Read RSS Hash bits from register
2677  * @nfc: pointer to user request
2678  * @i_setc bits currently set
2679  *
2680  * Returns value of bits to be set per user request
2681  **/
2682 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
2683 {
2684         u64 i_set = i_setc;
2685         u64 src_l3 = 0, dst_l3 = 0;
2686
2687         if (nfc->data & RXH_L4_B_0_1)
2688                 i_set |= I40E_L4_SRC_MASK;
2689         else
2690                 i_set &= ~I40E_L4_SRC_MASK;
2691         if (nfc->data & RXH_L4_B_2_3)
2692                 i_set |= I40E_L4_DST_MASK;
2693         else
2694                 i_set &= ~I40E_L4_DST_MASK;
2695
2696         if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
2697                 src_l3 = I40E_L3_V6_SRC_MASK;
2698                 dst_l3 = I40E_L3_V6_DST_MASK;
2699         } else if (nfc->flow_type == TCP_V4_FLOW ||
2700                   nfc->flow_type == UDP_V4_FLOW) {
2701                 src_l3 = I40E_L3_SRC_MASK;
2702                 dst_l3 = I40E_L3_DST_MASK;
2703         } else {
2704                 /* Any other flow type are not supported here */
2705                 return i_set;
2706         }
2707
2708         if (nfc->data & RXH_IP_SRC)
2709                 i_set |= src_l3;
2710         else
2711                 i_set &= ~src_l3;
2712         if (nfc->data & RXH_IP_DST)
2713                 i_set |= dst_l3;
2714         else
2715                 i_set &= ~dst_l3;
2716
2717         return i_set;
2718 }
2719
2720 /**
2721  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
2722  * @pf: pointer to the physical function struct
2723  * @cmd: ethtool rxnfc command
2724  *
2725  * Returns Success if the flow input set is supported.
2726  **/
2727 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
2728 {
2729         struct i40e_hw *hw = &pf->hw;
2730         u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
2731                    ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
2732         u8 flow_pctype = 0;
2733         u64 i_set, i_setc;
2734
2735         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
2736                 dev_err(&pf->pdev->dev,
2737                         "Change of RSS hash input set is not supported when MFP mode is enabled\n");
2738                 return -EOPNOTSUPP;
2739         }
2740
2741         /* RSS does not support anything other than hashing
2742          * to queues on src and dst IPs and ports
2743          */
2744         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
2745                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
2746                 return -EINVAL;
2747
2748         switch (nfc->flow_type) {
2749         case TCP_V4_FLOW:
2750                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
2751                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2752                         hena |=
2753                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
2754                 break;
2755         case TCP_V6_FLOW:
2756                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
2757                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2758                         hena |=
2759                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
2760                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2761                         hena |=
2762                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
2763                 break;
2764         case UDP_V4_FLOW:
2765                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
2766                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2767                         hena |=
2768                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
2769                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);
2770
2771                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
2772                 break;
2773         case UDP_V6_FLOW:
2774                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
2775                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2776                         hena |=
2777                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
2778                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);
2779
2780                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
2781                 break;
2782         case AH_ESP_V4_FLOW:
2783         case AH_V4_FLOW:
2784         case ESP_V4_FLOW:
2785         case SCTP_V4_FLOW:
2786                 if ((nfc->data & RXH_L4_B_0_1) ||
2787                     (nfc->data & RXH_L4_B_2_3))
2788                         return -EINVAL;
2789                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
2790                 break;
2791         case AH_ESP_V6_FLOW:
2792         case AH_V6_FLOW:
2793         case ESP_V6_FLOW:
2794         case SCTP_V6_FLOW:
2795                 if ((nfc->data & RXH_L4_B_0_1) ||
2796                     (nfc->data & RXH_L4_B_2_3))
2797                         return -EINVAL;
2798                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
2799                 break;
2800         case IPV4_FLOW:
2801                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
2802                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
2803                 break;
2804         case IPV6_FLOW:
2805                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
2806                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
2807                 break;
2808         default:
2809                 return -EINVAL;
2810         }
2811
2812         if (flow_pctype) {
2813                 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
2814                                                flow_pctype)) |
2815                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
2816                                                flow_pctype)) << 32);
2817                 i_set = i40e_get_rss_hash_bits(nfc, i_setc);
2818                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
2819                                   (u32)i_set);
2820                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),
2821                                   (u32)(i_set >> 32));
2822                 hena |= BIT_ULL(flow_pctype);
2823         }
2824
2825         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
2826         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
2827         i40e_flush(hw);
2828
2829         return 0;
2830 }
2831
2832 /**
2833  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
2834  * @vsi: Pointer to the targeted VSI
2835  * @input: The filter to update or NULL to indicate deletion
2836  * @sw_idx: Software index to the filter
2837  * @cmd: The command to get or set Rx flow classification rules
2838  *
2839  * This function updates (or deletes) a Flow Director entry from
2840  * the hlist of the corresponding PF
2841  *
2842  * Returns 0 on success
2843  **/
2844 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
2845                                           struct i40e_fdir_filter *input,
2846                                           u16 sw_idx,
2847                                           struct ethtool_rxnfc *cmd)
2848 {
2849         struct i40e_fdir_filter *rule, *parent;
2850         struct i40e_pf *pf = vsi->back;
2851         struct hlist_node *node2;
2852         int err = -EINVAL;
2853
2854         parent = NULL;
2855         rule = NULL;
2856
2857         hlist_for_each_entry_safe(rule, node2,
2858                                   &pf->fdir_filter_list, fdir_node) {
2859                 /* hash found, or no matching entry */
2860                 if (rule->fd_id >= sw_idx)
2861                         break;
2862                 parent = rule;
2863         }
2864
2865         /* if there is an old rule occupying our place remove it */
2866         if (rule && (rule->fd_id == sw_idx)) {
2867                 /* Remove this rule, since we're either deleting it, or
2868                  * replacing it.
2869                  */
2870                 err = i40e_add_del_fdir(vsi, rule, false);
2871                 hlist_del(&rule->fdir_node);
2872                 kfree(rule);
2873                 pf->fdir_pf_active_filters--;
2874         }
2875
2876         /* If we weren't given an input, this is a delete, so just return the
2877          * error code indicating if there was an entry at the requested slot
2878          */
2879         if (!input)
2880                 return err;
2881
2882         /* Otherwise, install the new rule as requested */
2883         INIT_HLIST_NODE(&input->fdir_node);
2884
2885         /* add filter to the list */
2886         if (parent)
2887                 hlist_add_behind(&input->fdir_node, &parent->fdir_node);
2888         else
2889                 hlist_add_head(&input->fdir_node,
2890                                &pf->fdir_filter_list);
2891
2892         /* update counts */
2893         pf->fdir_pf_active_filters++;
2894
2895         return 0;
2896 }
2897
2898 /**
2899  * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
2900  * @pf: pointer to PF structure
2901  *
2902  * This function searches the list of filters and determines which FLX_PIT
2903  * entries are still required. It will prune any entries which are no longer
2904  * in use after the deletion.
2905  **/
2906 static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
2907 {
2908         struct i40e_flex_pit *entry, *tmp;
2909         struct i40e_fdir_filter *rule;
2910
2911         /* First, we'll check the l3 table */
2912         list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
2913                 bool found = false;
2914
2915                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
2916                         if (rule->flow_type != IP_USER_FLOW)
2917                                 continue;
2918                         if (rule->flex_filter &&
2919                             rule->flex_offset == entry->src_offset) {
2920                                 found = true;
2921                                 break;
2922                         }
2923                 }
2924
2925                 /* If we didn't find the filter, then we can prune this entry
2926                  * from the list.
2927                  */
2928                 if (!found) {
2929                         list_del(&entry->list);
2930                         kfree(entry);
2931                 }
2932         }
2933
2934         /* Followed by the L4 table */
2935         list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
2936                 bool found = false;
2937
2938                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
2939                         /* Skip this filter if it's L3, since we already
2940                          * checked those in the above loop
2941                          */
2942                         if (rule->flow_type == IP_USER_FLOW)
2943                                 continue;
2944                         if (rule->flex_filter &&
2945                             rule->flex_offset == entry->src_offset) {
2946                                 found = true;
2947                                 break;
2948                         }
2949                 }
2950
2951                 /* If we didn't find the filter, then we can prune this entry
2952                  * from the list.
2953                  */
2954                 if (!found) {
2955                         list_del(&entry->list);
2956                         kfree(entry);
2957                 }
2958         }
2959 }
2960
2961 /**
2962  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
2963  * @vsi: Pointer to the targeted VSI
2964  * @cmd: The command to get or set Rx flow classification rules
2965  *
2966  * The function removes a Flow Director filter entry from the
2967  * hlist of the corresponding PF
2968  *
2969  * Returns 0 on success
2970  */
2971 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
2972                                struct ethtool_rxnfc *cmd)
2973 {
2974         struct ethtool_rx_flow_spec *fsp =
2975                 (struct ethtool_rx_flow_spec *)&cmd->fs;
2976         struct i40e_pf *pf = vsi->back;
2977         int ret = 0;
2978
2979         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
2980             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
2981                 return -EBUSY;
2982
2983         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
2984                 return -EBUSY;
2985
2986         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
2987
2988         i40e_prune_flex_pit_list(pf);
2989
2990         i40e_fdir_check_and_reenable(pf);
2991         return ret;
2992 }
2993
2994 /**
2995  * i40e_unused_pit_index - Find an unused PIT index for given list
2996  * @pf: the PF data structure
2997  *
2998  * Find the first unused flexible PIT index entry. We search both the L3 and
2999  * L4 flexible PIT lists so that the returned index is unique and unused by
3000  * either currently programmed L3 or L4 filters. We use a bit field as storage
3001  * to track which indexes are already used.
3002  **/
3003 static u8 i40e_unused_pit_index(struct i40e_pf *pf)
3004 {
3005         unsigned long available_index = 0xFF;
3006         struct i40e_flex_pit *entry;
3007
3008         /* We need to make sure that the new index isn't in use by either L3
3009          * or L4 filters so that IP_USER_FLOW filters can program both L3 and
3010          * L4 to use the same index.
3011          */
3012
3013         list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
3014                 clear_bit(entry->pit_index, &available_index);
3015
3016         list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
3017                 clear_bit(entry->pit_index, &available_index);
3018
3019         return find_first_bit(&available_index, 8);
3020 }
3021
3022 /**
3023  * i40e_find_flex_offset - Find an existing flex src_offset
3024  * @flex_pit_list: L3 or L4 flex PIT list
3025  * @src_offset: new src_offset to find
3026  *
3027  * Searches the flex_pit_list for an existing offset. If no offset is
3028  * currently programmed, then this will return an ERR_PTR if there is no space
3029  * to add a new offset, otherwise it returns NULL.
3030  **/
3031 static
3032 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
3033                                             u16 src_offset)
3034 {
3035         struct i40e_flex_pit *entry;
3036         int size = 0;
3037
3038         /* Search for the src_offset first. If we find a matching entry
3039          * already programmed, we can simply re-use it.
3040          */
3041         list_for_each_entry(entry, flex_pit_list, list) {
3042                 size++;
3043                 if (entry->src_offset == src_offset)
3044                         return entry;
3045         }
3046
3047         /* If we haven't found an entry yet, then the provided src offset has
3048          * not yet been programmed. We will program the src offset later on,
3049          * but we need to indicate whether there is enough space to do so
3050          * here. We'll make use of ERR_PTR for this purpose.
3051          */
3052         if (size >= I40E_FLEX_PIT_TABLE_SIZE)
3053                 return ERR_PTR(-ENOSPC);
3054
3055         return NULL;
3056 }
3057
3058 /**
3059  * i40e_add_flex_offset - Add src_offset to flex PIT table list
3060  * @flex_pit_list: L3 or L4 flex PIT list
3061  * @src_offset: new src_offset to add
3062  * @pit_index: the PIT index to program
3063  *
3064  * This function programs the new src_offset to the list. It is expected that
3065  * i40e_find_flex_offset has already been tried and returned NULL, indicating
3066  * that this offset is not programmed, and that the list has enough space to
3067  * store another offset.
3068  *
3069  * Returns 0 on success, and negative value on error.
3070  **/
3071 static int i40e_add_flex_offset(struct list_head *flex_pit_list,
3072                                 u16 src_offset,
3073                                 u8 pit_index)
3074 {
3075         struct i40e_flex_pit *new_pit, *entry;
3076
3077         new_pit = kzalloc(sizeof(*entry), GFP_KERNEL);
3078         if (!new_pit)
3079                 return -ENOMEM;
3080
3081         new_pit->src_offset = src_offset;
3082         new_pit->pit_index = pit_index;
3083
3084         /* We need to insert this item such that the list is sorted by
3085          * src_offset in ascending order.
3086          */
3087         list_for_each_entry(entry, flex_pit_list, list) {
3088                 if (new_pit->src_offset < entry->src_offset) {
3089                         list_add_tail(&new_pit->list, &entry->list);
3090                         return 0;
3091                 }
3092
3093                 /* If we found an entry with our offset already programmed we
3094                  * can simply return here, after freeing the memory. However,
3095                  * if the pit_index does not match we need to report an error.
3096                  */
3097                 if (new_pit->src_offset == entry->src_offset) {
3098                         int err = 0;
3099
3100                         /* If the PIT index is not the same we can't re-use
3101                          * the entry, so we must report an error.
3102                          */
3103                         if (new_pit->pit_index != entry->pit_index)
3104                                 err = -EINVAL;
3105
3106                         kfree(new_pit);
3107                         return err;
3108                 }
3109         }
3110
3111         /* If we reached here, then we haven't yet added the item. This means
3112          * that we should add the item at the end of the list.
3113          */
3114         list_add_tail(&new_pit->list, flex_pit_list);
3115         return 0;
3116 }
3117
3118 /**
3119  * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
3120  * @pf: Pointer to the PF structure
3121  * @flex_pit_list: list of flexible src offsets in use
3122  * #flex_pit_start: index to first entry for this section of the table
3123  *
3124  * In order to handle flexible data, the hardware uses a table of values
3125  * called the FLX_PIT table. This table is used to indicate which sections of
3126  * the input correspond to what PIT index values. Unfortunately, hardware is
3127  * very restrictive about programming this table. Entries must be ordered by
3128  * src_offset in ascending order, without duplicates. Additionally, unused
3129  * entries must be set to the unused index value, and must have valid size and
3130  * length according to the src_offset ordering.
3131  *
3132  * This function will reprogram the FLX_PIT register from a book-keeping
3133  * structure that we guarantee is already ordered correctly, and has no more
3134  * than 3 entries.
3135  *
3136  * To make things easier, we only support flexible values of one word length,
3137  * rather than allowing variable length flexible values.
3138  **/
3139 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
3140                                       struct list_head *flex_pit_list,
3141                                       int flex_pit_start)
3142 {
3143         struct i40e_flex_pit *entry = NULL;
3144         u16 last_offset = 0;
3145         int i = 0, j = 0;
3146
3147         /* First, loop over the list of flex PIT entries, and reprogram the
3148          * registers.
3149          */
3150         list_for_each_entry(entry, flex_pit_list, list) {
3151                 /* We have to be careful when programming values for the
3152                  * largest SRC_OFFSET value. It is possible that adding
3153                  * additional empty values at the end would overflow the space
3154                  * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
3155                  * we check here and add the empty values prior to adding the
3156                  * largest value.
3157                  *
3158                  * To determine this, we will use a loop from i+1 to 3, which
3159                  * will determine whether the unused entries would have valid
3160                  * SRC_OFFSET. Note that there cannot be extra entries past
3161                  * this value, because the only valid values would have been
3162                  * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
3163                  * have been added to the list in the first place.
3164                  */
3165                 for (j = i + 1; j < 3; j++) {
3166                         u16 offset = entry->src_offset + j;
3167                         int index = flex_pit_start + i;
3168                         u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3169                                                        1,
3170                                                        offset - 3);
3171
3172                         if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
3173                                 i40e_write_rx_ctl(&pf->hw,
3174                                                   I40E_PRTQF_FLX_PIT(index),
3175                                                   value);
3176                                 i++;
3177                         }
3178                 }
3179
3180                 /* Now, we can program the actual value into the table */
3181                 i40e_write_rx_ctl(&pf->hw,
3182                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3183                                   I40E_FLEX_PREP_VAL(entry->pit_index + 50,
3184                                                      1,
3185                                                      entry->src_offset));
3186                 i++;
3187         }
3188
3189         /* In order to program the last entries in the table, we need to
3190          * determine the valid offset. If the list is empty, we'll just start
3191          * with 0. Otherwise, we'll start with the last item offset and add 1.
3192          * This ensures that all entries have valid sizes. If we don't do this
3193          * correctly, the hardware will disable flexible field parsing.
3194          */
3195         if (!list_empty(flex_pit_list))
3196                 last_offset = list_prev_entry(entry, list)->src_offset + 1;
3197
3198         for (; i < 3; i++, last_offset++) {
3199                 i40e_write_rx_ctl(&pf->hw,
3200                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3201                                   I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3202                                                      1,
3203                                                      last_offset));
3204         }
3205 }
3206
3207 /**
3208  * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
3209  * @pf: pointer to the PF structure
3210  *
3211  * This function reprograms both the L3 and L4 FLX_PIT tables. See the
3212  * internal helper function for implementation details.
3213  **/
3214 static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
3215 {
3216         __i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
3217                                   I40E_FLEX_PIT_IDX_START_L3);
3218
3219         __i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list,
3220                                   I40E_FLEX_PIT_IDX_START_L4);
3221
3222         /* We also need to program the L3 and L4 GLQF ORT register */
3223         i40e_write_rx_ctl(&pf->hw,
3224                           I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
3225                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
3226                                             3, 1));
3227
3228         i40e_write_rx_ctl(&pf->hw,
3229                           I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
3230                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
3231                                             3, 1));
3232 }
3233
3234 /**
3235  * i40e_flow_str - Converts a flow_type into a human readable string
3236  * @flow_type: the flow type from a flow specification
3237  *
3238  * Currently only flow types we support are included here, and the string
3239  * value attempts to match what ethtool would use to configure this flow type.
3240  **/
3241 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
3242 {
3243         switch (fsp->flow_type & ~FLOW_EXT) {
3244         case TCP_V4_FLOW:
3245                 return "tcp4";
3246         case UDP_V4_FLOW:
3247                 return "udp4";
3248         case SCTP_V4_FLOW:
3249                 return "sctp4";
3250         case IP_USER_FLOW:
3251                 return "ip4";
3252         default:
3253                 return "unknown";
3254         }
3255 }
3256
3257 /**
3258  * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
3259  * @pit_index: PIT index to convert
3260  *
3261  * Returns the mask for a given PIT index. Will return 0 if the pit_index is
3262  * of range.
3263  **/
3264 static u64 i40e_pit_index_to_mask(int pit_index)
3265 {
3266         switch (pit_index) {
3267         case 0:
3268                 return I40E_FLEX_50_MASK;
3269         case 1:
3270                 return I40E_FLEX_51_MASK;
3271         case 2:
3272                 return I40E_FLEX_52_MASK;
3273         case 3:
3274                 return I40E_FLEX_53_MASK;
3275         case 4:
3276                 return I40E_FLEX_54_MASK;
3277         case 5:
3278                 return I40E_FLEX_55_MASK;
3279         case 6:
3280                 return I40E_FLEX_56_MASK;
3281         case 7:
3282                 return I40E_FLEX_57_MASK;
3283         default:
3284                 return 0;
3285         }
3286 }
3287
3288 /**
3289  * i40e_print_input_set - Show changes between two input sets
3290  * @vsi: the vsi being configured
3291  * @old: the old input set
3292  * @new: the new input set
3293  *
3294  * Print the difference between old and new input sets by showing which series
3295  * of words are toggled on or off. Only displays the bits we actually support
3296  * changing.
3297  **/
3298 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
3299 {
3300         struct i40e_pf *pf = vsi->back;
3301         bool old_value, new_value;
3302         int i;
3303
3304         old_value = !!(old & I40E_L3_SRC_MASK);
3305         new_value = !!(new & I40E_L3_SRC_MASK);
3306         if (old_value != new_value)
3307                 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
3308                            old_value ? "ON" : "OFF",
3309                            new_value ? "ON" : "OFF");
3310
3311         old_value = !!(old & I40E_L3_DST_MASK);
3312         new_value = !!(new & I40E_L3_DST_MASK);
3313         if (old_value != new_value)
3314                 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
3315                            old_value ? "ON" : "OFF",
3316                            new_value ? "ON" : "OFF");
3317
3318         old_value = !!(old & I40E_L4_SRC_MASK);
3319         new_value = !!(new & I40E_L4_SRC_MASK);
3320         if (old_value != new_value)
3321                 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
3322                            old_value ? "ON" : "OFF",
3323                            new_value ? "ON" : "OFF");
3324
3325         old_value = !!(old & I40E_L4_DST_MASK);
3326         new_value = !!(new & I40E_L4_DST_MASK);
3327         if (old_value != new_value)
3328                 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
3329                            old_value ? "ON" : "OFF",
3330                            new_value ? "ON" : "OFF");
3331
3332         old_value = !!(old & I40E_VERIFY_TAG_MASK);
3333         new_value = !!(new & I40E_VERIFY_TAG_MASK);
3334         if (old_value != new_value)
3335                 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
3336                            old_value ? "ON" : "OFF",
3337                            new_value ? "ON" : "OFF");
3338
3339         /* Show change of flexible filter entries */
3340         for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
3341                 u64 flex_mask = i40e_pit_index_to_mask(i);
3342
3343                 old_value = !!(old & flex_mask);
3344                 new_value = !!(new & flex_mask);
3345                 if (old_value != new_value)
3346                         netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
3347                                    i,
3348                                    old_value ? "ON" : "OFF",
3349                                    new_value ? "ON" : "OFF");
3350         }
3351
3352         netif_info(pf, drv, vsi->netdev, "  Current input set: %0llx\n",
3353                    old);
3354         netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
3355                    new);
3356 }
3357
3358 /**
3359  * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
3360  * @vsi: pointer to the targeted VSI
3361  * @fsp: pointer to Rx flow specification
3362  * @userdef: userdefined data from flow specification
3363  *
3364  * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
3365  * for partial matches exists with a few limitations. First, hardware only
3366  * supports masking by word boundary (2 bytes) and not per individual bit.
3367  * Second, hardware is limited to using one mask for a flow type and cannot
3368  * use a separate mask for each filter.
3369  *
3370  * To support these limitations, if we already have a configured filter for
3371  * the specified type, this function enforces that new filters of the type
3372  * match the configured input set. Otherwise, if we do not have a filter of
3373  * the specified type, we allow the input set to be updated to match the
3374  * desired filter.
3375  *
3376  * To help ensure that administrators understand why filters weren't displayed
3377  * as supported, we print a diagnostic message displaying how the input set
3378  * would change and warning to delete the preexisting filters if required.
3379  *
3380  * Returns 0 on successful input set match, and a negative return code on
3381  * failure.
3382  **/
3383 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
3384                                      struct ethtool_rx_flow_spec *fsp,
3385                                      struct i40e_rx_flow_userdef *userdef)
3386 {
3387         struct i40e_pf *pf = vsi->back;
3388         struct ethtool_tcpip4_spec *tcp_ip4_spec;
3389         struct ethtool_usrip4_spec *usr_ip4_spec;
3390         u64 current_mask, new_mask;
3391         bool new_flex_offset = false;
3392         bool flex_l3 = false;
3393         u16 *fdir_filter_count;
3394         u16 index, src_offset = 0;
3395         u8 pit_index = 0;
3396         int err;
3397
3398         switch (fsp->flow_type & ~FLOW_EXT) {
3399         case SCTP_V4_FLOW:
3400                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
3401                 fdir_filter_count = &pf->fd_sctp4_filter_cnt;
3402                 break;
3403         case TCP_V4_FLOW:
3404                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3405                 fdir_filter_count = &pf->fd_tcp4_filter_cnt;
3406                 break;
3407         case UDP_V4_FLOW:
3408                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3409                 fdir_filter_count = &pf->fd_udp4_filter_cnt;
3410                 break;
3411         case IP_USER_FLOW:
3412                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3413                 fdir_filter_count = &pf->fd_ip4_filter_cnt;
3414                 flex_l3 = true;
3415                 break;
3416         default:
3417                 return -EOPNOTSUPP;
3418         }
3419
3420         /* Read the current input set from register memory. */
3421         current_mask = i40e_read_fd_input_set(pf, index);
3422         new_mask = current_mask;
3423
3424         /* Determine, if any, the required changes to the input set in order
3425          * to support the provided mask.
3426          *
3427          * Hardware only supports masking at word (2 byte) granularity and does
3428          * not support full bitwise masking. This implementation simplifies
3429          * even further and only supports fully enabled or fully disabled
3430          * masks for each field, even though we could split the ip4src and
3431          * ip4dst fields.
3432          */
3433         switch (fsp->flow_type & ~FLOW_EXT) {
3434         case SCTP_V4_FLOW:
3435                 new_mask &= ~I40E_VERIFY_TAG_MASK;
3436                 /* Fall through */
3437         case TCP_V4_FLOW:
3438         case UDP_V4_FLOW:
3439                 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
3440
3441                 /* IPv4 source address */
3442                 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
3443                         new_mask |= I40E_L3_SRC_MASK;
3444                 else if (!tcp_ip4_spec->ip4src)
3445                         new_mask &= ~I40E_L3_SRC_MASK;
3446                 else
3447                         return -EOPNOTSUPP;
3448
3449                 /* IPv4 destination address */
3450                 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
3451                         new_mask |= I40E_L3_DST_MASK;
3452                 else if (!tcp_ip4_spec->ip4dst)
3453                         new_mask &= ~I40E_L3_DST_MASK;
3454                 else
3455                         return -EOPNOTSUPP;
3456
3457                 /* L4 source port */
3458                 if (tcp_ip4_spec->psrc == htons(0xFFFF))
3459                         new_mask |= I40E_L4_SRC_MASK;
3460                 else if (!tcp_ip4_spec->psrc)
3461                         new_mask &= ~I40E_L4_SRC_MASK;
3462                 else
3463                         return -EOPNOTSUPP;
3464
3465                 /* L4 destination port */
3466                 if (tcp_ip4_spec->pdst == htons(0xFFFF))
3467                         new_mask |= I40E_L4_DST_MASK;
3468                 else if (!tcp_ip4_spec->pdst)
3469                         new_mask &= ~I40E_L4_DST_MASK;
3470                 else
3471                         return -EOPNOTSUPP;
3472
3473                 /* Filtering on Type of Service is not supported. */
3474                 if (tcp_ip4_spec->tos)
3475                         return -EOPNOTSUPP;
3476
3477                 break;
3478         case IP_USER_FLOW:
3479                 usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
3480
3481                 /* IPv4 source address */
3482                 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
3483                         new_mask |= I40E_L3_SRC_MASK;
3484                 else if (!usr_ip4_spec->ip4src)
3485                         new_mask &= ~I40E_L3_SRC_MASK;
3486                 else
3487                         return -EOPNOTSUPP;
3488
3489                 /* IPv4 destination address */
3490                 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
3491                         new_mask |= I40E_L3_DST_MASK;
3492                 else if (!usr_ip4_spec->ip4dst)
3493                         new_mask &= ~I40E_L3_DST_MASK;
3494                 else
3495                         return -EOPNOTSUPP;
3496
3497                 /* First 4 bytes of L4 header */
3498                 if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF))
3499                         new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
3500                 else if (!usr_ip4_spec->l4_4_bytes)
3501                         new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
3502                 else
3503                         return -EOPNOTSUPP;
3504
3505                 /* Filtering on Type of Service is not supported. */
3506                 if (usr_ip4_spec->tos)
3507                         return -EOPNOTSUPP;
3508
3509                 /* Filtering on IP version is not supported */
3510                 if (usr_ip4_spec->ip_ver)
3511                         return -EINVAL;
3512
3513                 /* Filtering on L4 protocol is not supported */
3514                 if (usr_ip4_spec->proto)
3515                         return -EINVAL;
3516
3517                 break;
3518         default:
3519                 return -EOPNOTSUPP;
3520         }
3521
3522         /* First, clear all flexible filter entries */
3523         new_mask &= ~I40E_FLEX_INPUT_MASK;
3524
3525         /* If we have a flexible filter, try to add this offset to the correct
3526          * flexible filter PIT list. Once finished, we can update the mask.
3527          * If the src_offset changed, we will get a new mask value which will
3528          * trigger an input set change.
3529          */
3530         if (userdef->flex_filter) {
3531                 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
3532
3533                 /* Flexible offset must be even, since the flexible payload
3534                  * must be aligned on 2-byte boundary.
3535                  */
3536                 if (userdef->flex_offset & 0x1) {
3537                         dev_warn(&pf->pdev->dev,
3538                                  "Flexible data offset must be 2-byte aligned\n");
3539                         return -EINVAL;
3540                 }
3541
3542                 src_offset = userdef->flex_offset >> 1;
3543
3544                 /* FLX_PIT source offset value is only so large */
3545                 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
3546                         dev_warn(&pf->pdev->dev,
3547                                  "Flexible data must reside within first 64 bytes of the packet payload\n");
3548                         return -EINVAL;
3549                 }
3550
3551                 /* See if this offset has already been programmed. If we get
3552                  * an ERR_PTR, then the filter is not safe to add. Otherwise,
3553                  * if we get a NULL pointer, this means we will need to add
3554                  * the offset.
3555                  */
3556                 flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
3557                                                  src_offset);
3558                 if (IS_ERR(flex_pit))
3559                         return PTR_ERR(flex_pit);
3560
3561                 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
3562                  * packet types, and thus we need to program both L3 and L4
3563                  * flexible values. These must have identical flexible index,
3564                  * as otherwise we can't correctly program the input set. So
3565                  * we'll find both an L3 and L4 index and make sure they are
3566                  * the same.
3567                  */
3568                 if (flex_l3) {
3569                         l3_flex_pit =
3570                                 i40e_find_flex_offset(&pf->l3_flex_pit_list,
3571                                                       src_offset);
3572                         if (IS_ERR(l3_flex_pit))
3573                                 return PTR_ERR(l3_flex_pit);
3574
3575                         if (flex_pit) {
3576                                 /* If we already had a matching L4 entry, we
3577                                  * need to make sure that the L3 entry we
3578                                  * obtained uses the same index.
3579                                  */
3580                                 if (l3_flex_pit) {
3581                                         if (l3_flex_pit->pit_index !=
3582                                             flex_pit->pit_index) {
3583                                                 return -EINVAL;
3584                                         }
3585                                 } else {
3586                                         new_flex_offset = true;
3587                                 }
3588                         } else {
3589                                 flex_pit = l3_flex_pit;
3590                         }
3591                 }
3592
3593                 /* If we didn't find an existing flex offset, we need to
3594                  * program a new one. However, we don't immediately program it
3595                  * here because we will wait to program until after we check
3596                  * that it is safe to change the input set.
3597                  */
3598                 if (!flex_pit) {
3599                         new_flex_offset = true;
3600                         pit_index = i40e_unused_pit_index(pf);
3601                 } else {
3602                         pit_index = flex_pit->pit_index;
3603                 }
3604
3605                 /* Update the mask with the new offset */
3606                 new_mask |= i40e_pit_index_to_mask(pit_index);
3607         }
3608
3609         /* If the mask and flexible filter offsets for this filter match the
3610          * currently programmed values we don't need any input set change, so
3611          * this filter is safe to install.
3612          */
3613         if (new_mask == current_mask && !new_flex_offset)
3614                 return 0;
3615
3616         netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
3617                    i40e_flow_str(fsp));
3618         i40e_print_input_set(vsi, current_mask, new_mask);
3619         if (new_flex_offset) {
3620                 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
3621                            pit_index, src_offset);
3622         }
3623
3624         /* Hardware input sets are global across multiple ports, so even the
3625          * main port cannot change them when in MFP mode as this would impact
3626          * any filters on the other ports.
3627          */
3628         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3629                 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
3630                 return -EOPNOTSUPP;
3631         }
3632
3633         /* This filter requires us to update the input set. However, hardware
3634          * only supports one input set per flow type, and does not support
3635          * separate masks for each filter. This means that we can only support
3636          * a single mask for all filters of a specific type.
3637          *
3638          * If we have preexisting filters, they obviously depend on the
3639          * current programmed input set. Display a diagnostic message in this
3640          * case explaining why the filter could not be accepted.
3641          */
3642         if (*fdir_filter_count) {
3643                 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
3644                           i40e_flow_str(fsp),
3645                           *fdir_filter_count);
3646                 return -EOPNOTSUPP;
3647         }
3648
3649         i40e_write_fd_input_set(pf, index, new_mask);
3650
3651         /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
3652          * frames. If we're programming the input set for IPv4/Other, we also
3653          * need to program the IPv4/Fragmented input set. Since we don't have
3654          * separate support, we'll always assume and enforce that the two flow
3655          * types must have matching input sets.
3656          */
3657         if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
3658                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
3659                                         new_mask);
3660
3661         /* Add the new offset and update table, if necessary */
3662         if (new_flex_offset) {
3663                 err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
3664                                            pit_index);
3665                 if (err)
3666                         return err;
3667
3668                 if (flex_l3) {
3669                         err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
3670                                                    src_offset,
3671                                                    pit_index);
3672                         if (err)
3673                                 return err;
3674                 }
3675
3676                 i40e_reprogram_flex_pit(pf);
3677         }
3678
3679         return 0;
3680 }
3681
3682 /**
3683  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
3684  * @vsi: pointer to the targeted VSI
3685  * @cmd: command to get or set RX flow classification rules
3686  *
3687  * Add Flow Director filters for a specific flow spec based on their
3688  * protocol.  Returns 0 if the filters were successfully added.
3689  **/
3690 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
3691                                  struct ethtool_rxnfc *cmd)
3692 {
3693         struct i40e_rx_flow_userdef userdef;
3694         struct ethtool_rx_flow_spec *fsp;
3695         struct i40e_fdir_filter *input;
3696         u16 dest_vsi = 0, q_index = 0;
3697         struct i40e_pf *pf;
3698         int ret = -EINVAL;
3699         u8 dest_ctl;
3700
3701         if (!vsi)
3702                 return -EINVAL;
3703         pf = vsi->back;
3704
3705         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3706                 return -EOPNOTSUPP;
3707
3708         if (pf->flags & I40E_FLAG_FD_SB_AUTO_DISABLED)
3709                 return -ENOSPC;
3710
3711         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
3712             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3713                 return -EBUSY;
3714
3715         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3716                 return -EBUSY;
3717
3718         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
3719
3720         /* Parse the user-defined field */
3721         if (i40e_parse_rx_flow_user_data(fsp, &userdef))
3722                 return -EINVAL;
3723
3724         /* Extended MAC field is not supported */
3725         if (fsp->flow_type & FLOW_MAC_EXT)
3726                 return -EINVAL;
3727
3728         ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
3729         if (ret)
3730                 return ret;
3731
3732         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
3733                               pf->hw.func_caps.fd_filters_guaranteed)) {
3734                 return -EINVAL;
3735         }
3736
3737         /* ring_cookie is either the drop index, or is a mask of the queue
3738          * index and VF id we wish to target.
3739          */
3740         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
3741                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
3742         } else {
3743                 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
3744                 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
3745
3746                 if (!vf) {
3747                         if (ring >= vsi->num_queue_pairs)
3748                                 return -EINVAL;
3749                         dest_vsi = vsi->id;
3750                 } else {
3751                         /* VFs are zero-indexed, so we subtract one here */
3752                         vf--;
3753
3754                         if (vf >= pf->num_alloc_vfs)
3755                                 return -EINVAL;
3756                         if (ring >= pf->vf[vf].num_queue_pairs)
3757                                 return -EINVAL;
3758                         dest_vsi = pf->vf[vf].lan_vsi_id;
3759                 }
3760                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
3761                 q_index = ring;
3762         }
3763
3764         input = kzalloc(sizeof(*input), GFP_KERNEL);
3765
3766         if (!input)
3767                 return -ENOMEM;
3768
3769         input->fd_id = fsp->location;
3770         input->q_index = q_index;
3771         input->dest_vsi = dest_vsi;
3772         input->dest_ctl = dest_ctl;
3773         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
3774         input->cnt_index  = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
3775         input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
3776         input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
3777         input->flow_type = fsp->flow_type & ~FLOW_EXT;
3778         input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
3779
3780         /* Reverse the src and dest notion, since the HW expects them to be from
3781          * Tx perspective where as the input from user is from Rx filter view.
3782          */
3783         input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
3784         input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
3785         input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
3786         input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
3787
3788         if (userdef.flex_filter) {
3789                 input->flex_filter = true;
3790                 input->flex_word = cpu_to_be16(userdef.flex_word);
3791                 input->flex_offset = userdef.flex_offset;
3792         }
3793
3794         ret = i40e_add_del_fdir(vsi, input, true);
3795         if (ret)
3796                 goto free_input;
3797
3798         /* Add the input filter to the fdir_input_list, possibly replacing
3799          * a previous filter. Do not free the input structure after adding it
3800          * to the list as this would cause a use-after-free bug.
3801          */
3802         i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
3803
3804         return 0;
3805
3806 free_input:
3807         kfree(input);
3808         return ret;
3809 }
3810
3811 /**
3812  * i40e_set_rxnfc - command to set RX flow classification rules
3813  * @netdev: network interface device structure
3814  * @cmd: ethtool rxnfc command
3815  *
3816  * Returns Success if the command is supported.
3817  **/
3818 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
3819 {
3820         struct i40e_netdev_priv *np = netdev_priv(netdev);
3821         struct i40e_vsi *vsi = np->vsi;
3822         struct i40e_pf *pf = vsi->back;
3823         int ret = -EOPNOTSUPP;
3824
3825         switch (cmd->cmd) {
3826         case ETHTOOL_SRXFH:
3827                 ret = i40e_set_rss_hash_opt(pf, cmd);
3828                 break;
3829         case ETHTOOL_SRXCLSRLINS:
3830                 ret = i40e_add_fdir_ethtool(vsi, cmd);
3831                 break;
3832         case ETHTOOL_SRXCLSRLDEL:
3833                 ret = i40e_del_fdir_entry(vsi, cmd);
3834                 break;
3835         default:
3836                 break;
3837         }
3838
3839         return ret;
3840 }
3841
3842 /**
3843  * i40e_max_channels - get Max number of combined channels supported
3844  * @vsi: vsi pointer
3845  **/
3846 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
3847 {
3848         /* TODO: This code assumes DCB and FD is disabled for now. */
3849         return vsi->alloc_queue_pairs;
3850 }
3851
3852 /**
3853  * i40e_get_channels - Get the current channels enabled and max supported etc.
3854  * @netdev: network interface device structure
3855  * @ch: ethtool channels structure
3856  *
3857  * We don't support separate tx and rx queues as channels. The other count
3858  * represents how many queues are being used for control. max_combined counts
3859  * how many queue pairs we can support. They may not be mapped 1 to 1 with
3860  * q_vectors since we support a lot more queue pairs than q_vectors.
3861  **/
3862 static void i40e_get_channels(struct net_device *dev,
3863                                struct ethtool_channels *ch)
3864 {
3865         struct i40e_netdev_priv *np = netdev_priv(dev);
3866         struct i40e_vsi *vsi = np->vsi;
3867         struct i40e_pf *pf = vsi->back;
3868
3869         /* report maximum channels */
3870         ch->max_combined = i40e_max_channels(vsi);
3871
3872         /* report info for other vector */
3873         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
3874         ch->max_other = ch->other_count;
3875
3876         /* Note: This code assumes DCB is disabled for now. */
3877         ch->combined_count = vsi->num_queue_pairs;
3878 }
3879
3880 /**
3881  * i40e_set_channels - Set the new channels count.
3882  * @netdev: network interface device structure
3883  * @ch: ethtool channels structure
3884  *
3885  * The new channels count may not be the same as requested by the user
3886  * since it gets rounded down to a power of 2 value.
3887  **/
3888 static int i40e_set_channels(struct net_device *dev,
3889                               struct ethtool_channels *ch)
3890 {
3891         const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
3892         struct i40e_netdev_priv *np = netdev_priv(dev);
3893         unsigned int count = ch->combined_count;
3894         struct i40e_vsi *vsi = np->vsi;
3895         struct i40e_pf *pf = vsi->back;
3896         struct i40e_fdir_filter *rule;
3897         struct hlist_node *node2;
3898         int new_count;
3899         int err = 0;
3900
3901         /* We do not support setting channels for any other VSI at present */
3902         if (vsi->type != I40E_VSI_MAIN)
3903                 return -EINVAL;
3904
3905         /* verify they are not requesting separate vectors */
3906         if (!count || ch->rx_count || ch->tx_count)
3907                 return -EINVAL;
3908
3909         /* verify other_count has not changed */
3910         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
3911                 return -EINVAL;
3912
3913         /* verify the number of channels does not exceed hardware limits */
3914         if (count > i40e_max_channels(vsi))
3915                 return -EINVAL;
3916
3917         /* verify that the number of channels does not invalidate any current
3918          * flow director rules
3919          */
3920         hlist_for_each_entry_safe(rule, node2,
3921                                   &pf->fdir_filter_list, fdir_node) {
3922                 if (rule->dest_ctl != drop && count <= rule->q_index) {
3923                         dev_warn(&pf->pdev->dev,
3924                                  "Existing user defined filter %d assigns flow to queue %d\n",
3925                                  rule->fd_id, rule->q_index);
3926                         err = -EINVAL;
3927                 }
3928         }
3929
3930         if (err) {
3931                 dev_err(&pf->pdev->dev,
3932                         "Existing filter rules must be deleted to reduce combined channel count to %d\n",
3933                         count);
3934                 return err;
3935         }
3936
3937         /* update feature limits from largest to smallest supported values */
3938         /* TODO: Flow director limit, DCB etc */
3939
3940         /* use rss_reconfig to rebuild with new queue count and update traffic
3941          * class queue mapping
3942          */
3943         new_count = i40e_reconfig_rss_queues(pf, count);
3944         if (new_count > 0)
3945                 return 0;
3946         else
3947                 return -EINVAL;
3948 }
3949
3950 /**
3951  * i40e_get_rxfh_key_size - get the RSS hash key size
3952  * @netdev: network interface device structure
3953  *
3954  * Returns the table size.
3955  **/
3956 static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
3957 {
3958         return I40E_HKEY_ARRAY_SIZE;
3959 }
3960
3961 /**
3962  * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
3963  * @netdev: network interface device structure
3964  *
3965  * Returns the table size.
3966  **/
3967 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
3968 {
3969         return I40E_HLUT_ARRAY_SIZE;
3970 }
3971
3972 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
3973                          u8 *hfunc)
3974 {
3975         struct i40e_netdev_priv *np = netdev_priv(netdev);
3976         struct i40e_vsi *vsi = np->vsi;
3977         u8 *lut, *seed = NULL;
3978         int ret;
3979         u16 i;
3980
3981         if (hfunc)
3982                 *hfunc = ETH_RSS_HASH_TOP;
3983
3984         if (!indir)
3985                 return 0;
3986
3987         seed = key;
3988         lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
3989         if (!lut)
3990                 return -ENOMEM;
3991         ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
3992         if (ret)
3993                 goto out;
3994         for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
3995                 indir[i] = (u32)(lut[i]);
3996
3997 out:
3998         kfree(lut);
3999
4000         return ret;
4001 }
4002
4003 /**
4004  * i40e_set_rxfh - set the rx flow hash indirection table
4005  * @netdev: network interface device structure
4006  * @indir: indirection table
4007  * @key: hash key
4008  *
4009  * Returns -EINVAL if the table specifies an invalid queue id, otherwise
4010  * returns 0 after programming the table.
4011  **/
4012 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
4013                          const u8 *key, const u8 hfunc)
4014 {
4015         struct i40e_netdev_priv *np = netdev_priv(netdev);
4016         struct i40e_vsi *vsi = np->vsi;
4017         struct i40e_pf *pf = vsi->back;
4018         u8 *seed = NULL;
4019         u16 i;
4020
4021         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
4022                 return -EOPNOTSUPP;
4023
4024         if (key) {
4025                 if (!vsi->rss_hkey_user) {
4026                         vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
4027                                                      GFP_KERNEL);
4028                         if (!vsi->rss_hkey_user)
4029                                 return -ENOMEM;
4030                 }
4031                 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
4032                 seed = vsi->rss_hkey_user;
4033         }
4034         if (!vsi->rss_lut_user) {
4035                 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
4036                 if (!vsi->rss_lut_user)
4037                         return -ENOMEM;
4038         }
4039
4040         /* Each 32 bits pointed by 'indir' is stored with a lut entry */
4041         if (indir)
4042                 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
4043                         vsi->rss_lut_user[i] = (u8)(indir[i]);
4044         else
4045                 i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
4046                                   vsi->rss_size);
4047
4048         return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
4049                                I40E_HLUT_ARRAY_SIZE);
4050 }
4051
4052 /**
4053  * i40e_get_priv_flags - report device private flags
4054  * @dev: network interface device structure
4055  *
4056  * The get string set count and the string set should be matched for each
4057  * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
4058  * array.
4059  *
4060  * Returns a u32 bitmap of flags.
4061  **/
4062 static u32 i40e_get_priv_flags(struct net_device *dev)
4063 {
4064         struct i40e_netdev_priv *np = netdev_priv(dev);
4065         struct i40e_vsi *vsi = np->vsi;
4066         struct i40e_pf *pf = vsi->back;
4067         u32 i, j, ret_flags = 0;
4068
4069         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
4070                 const struct i40e_priv_flags *priv_flags;
4071
4072                 priv_flags = &i40e_gstrings_priv_flags[i];
4073
4074                 if (priv_flags->flag & pf->flags)
4075                         ret_flags |= BIT(i);
4076         }
4077
4078         if (pf->hw.pf_id != 0)
4079                 return ret_flags;
4080
4081         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
4082                 const struct i40e_priv_flags *priv_flags;
4083
4084                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
4085
4086                 if (priv_flags->flag & pf->flags)
4087                         ret_flags |= BIT(i + j);
4088         }
4089
4090         return ret_flags;
4091 }
4092
4093 /**
4094  * i40e_set_priv_flags - set private flags
4095  * @dev: network interface device structure
4096  * @flags: bit flags to be set
4097  **/
4098 static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
4099 {
4100         struct i40e_netdev_priv *np = netdev_priv(dev);
4101         struct i40e_vsi *vsi = np->vsi;
4102         struct i40e_pf *pf = vsi->back;
4103         u64 orig_flags, new_flags, changed_flags;
4104         u32 i, j;
4105
4106         orig_flags = READ_ONCE(pf->flags);
4107         new_flags = orig_flags;
4108
4109         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
4110                 const struct i40e_priv_flags *priv_flags;
4111
4112                 priv_flags = &i40e_gstrings_priv_flags[i];
4113
4114                 if (flags & BIT(i))
4115                         new_flags |= priv_flags->flag;
4116                 else
4117                         new_flags &= ~(priv_flags->flag);
4118
4119                 /* If this is a read-only flag, it can't be changed */
4120                 if (priv_flags->read_only &&
4121                     ((orig_flags ^ new_flags) & ~BIT(i)))
4122                         return -EOPNOTSUPP;
4123         }
4124
4125         if (pf->hw.pf_id != 0)
4126                 goto flags_complete;
4127
4128         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
4129                 const struct i40e_priv_flags *priv_flags;
4130
4131                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
4132
4133                 if (flags & BIT(i + j))
4134                         new_flags |= priv_flags->flag;
4135                 else
4136                         new_flags &= ~(priv_flags->flag);
4137
4138                 /* If this is a read-only flag, it can't be changed */
4139                 if (priv_flags->read_only &&
4140                     ((orig_flags ^ new_flags) & ~BIT(i)))
4141                         return -EOPNOTSUPP;
4142         }
4143
4144 flags_complete:
4145         /* Before we finalize any flag changes, we need to perform some
4146          * checks to ensure that the changes are supported and safe.
4147          */
4148
4149         /* ATR eviction is not supported on all devices */
4150         if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
4151             !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
4152                 return -EOPNOTSUPP;
4153
4154         /* Compare and exchange the new flags into place. If we failed, that
4155          * is if cmpxchg64 returns anything but the old value, this means that
4156          * something else has modified the flags variable since we copied it
4157          * originally. We'll just punt with an error and log something in the
4158          * message buffer.
4159          */
4160         if (cmpxchg64(&pf->flags, orig_flags, new_flags) != orig_flags) {
4161                 dev_warn(&pf->pdev->dev,
4162                          "Unable to update pf->flags as it was modified by another thread...\n");
4163                 return -EAGAIN;
4164         }
4165
4166         changed_flags = orig_flags ^ new_flags;
4167
4168         /* Process any additional changes needed as a result of flag changes.
4169          * The changed_flags value reflects the list of bits that were
4170          * changed in the code above.
4171          */
4172
4173         /* Flush current ATR settings if ATR was disabled */
4174         if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
4175             !(pf->flags & I40E_FLAG_FD_ATR_ENABLED)) {
4176                 pf->flags |= I40E_FLAG_FD_ATR_AUTO_DISABLED;
4177                 set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
4178         }
4179
4180         if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
4181                 u16 sw_flags = 0, valid_flags = 0;
4182                 int ret;
4183
4184                 if (!(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
4185                         sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
4186                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
4187                 ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
4188                                                 NULL);
4189                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
4190                         dev_info(&pf->pdev->dev,
4191                                  "couldn't set switch config bits, err %s aq_err %s\n",
4192                                  i40e_stat_str(&pf->hw, ret),
4193                                  i40e_aq_str(&pf->hw,
4194                                              pf->hw.aq.asq_last_status));
4195                         /* not a fatal problem, just keep going */
4196                 }
4197         }
4198
4199         /* Issue reset to cause things to take effect, as additional bits
4200          * are added we will need to create a mask of bits requiring reset
4201          */
4202         if ((changed_flags & I40E_FLAG_VEB_STATS_ENABLED) ||
4203             ((changed_flags & I40E_FLAG_LEGACY_RX) && netif_running(dev)))
4204                 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
4205
4206         return 0;
4207 }
4208
4209 static const struct ethtool_ops i40e_ethtool_ops = {
4210         .get_drvinfo            = i40e_get_drvinfo,
4211         .get_regs_len           = i40e_get_regs_len,
4212         .get_regs               = i40e_get_regs,
4213         .nway_reset             = i40e_nway_reset,
4214         .get_link               = ethtool_op_get_link,
4215         .get_wol                = i40e_get_wol,
4216         .set_wol                = i40e_set_wol,
4217         .set_eeprom             = i40e_set_eeprom,
4218         .get_eeprom_len         = i40e_get_eeprom_len,
4219         .get_eeprom             = i40e_get_eeprom,
4220         .get_ringparam          = i40e_get_ringparam,
4221         .set_ringparam          = i40e_set_ringparam,
4222         .get_pauseparam         = i40e_get_pauseparam,
4223         .set_pauseparam         = i40e_set_pauseparam,
4224         .get_msglevel           = i40e_get_msglevel,
4225         .set_msglevel           = i40e_set_msglevel,
4226         .get_rxnfc              = i40e_get_rxnfc,
4227         .set_rxnfc              = i40e_set_rxnfc,
4228         .self_test              = i40e_diag_test,
4229         .get_strings            = i40e_get_strings,
4230         .set_phys_id            = i40e_set_phys_id,
4231         .get_sset_count         = i40e_get_sset_count,
4232         .get_ethtool_stats      = i40e_get_ethtool_stats,
4233         .get_coalesce           = i40e_get_coalesce,
4234         .set_coalesce           = i40e_set_coalesce,
4235         .get_rxfh_key_size      = i40e_get_rxfh_key_size,
4236         .get_rxfh_indir_size    = i40e_get_rxfh_indir_size,
4237         .get_rxfh               = i40e_get_rxfh,
4238         .set_rxfh               = i40e_set_rxfh,
4239         .get_channels           = i40e_get_channels,
4240         .set_channels           = i40e_set_channels,
4241         .get_ts_info            = i40e_get_ts_info,
4242         .get_priv_flags         = i40e_get_priv_flags,
4243         .set_priv_flags         = i40e_set_priv_flags,
4244         .get_per_queue_coalesce = i40e_get_per_queue_coalesce,
4245         .set_per_queue_coalesce = i40e_set_per_queue_coalesce,
4246         .get_link_ksettings     = i40e_get_link_ksettings,
4247         .set_link_ksettings     = i40e_set_link_ksettings,
4248 };
4249
4250 void i40e_set_ethtool_ops(struct net_device *netdev)
4251 {
4252         netdev->ethtool_ops = &i40e_ethtool_ops;
4253 }