i40e_ethtool.c 142.4 KB
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2013 - 2018 Intel Corporation. */
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/* ethtool support for i40e */

#include "i40e.h"
#include "i40e_diag.h"

struct i40e_stats {
	char stat_string[ETH_GSTRING_LEN];
	int sizeof_stat;
	int stat_offset;
};

#define I40E_STAT(_type, _name, _stat) { \
	.stat_string = _name, \
	.sizeof_stat = FIELD_SIZEOF(_type, _stat), \
	.stat_offset = offsetof(_type, _stat) \
}
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#define I40E_NETDEV_STAT(_net_stat) \
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		I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
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#define I40E_PF_STAT(_name, _stat) \
		I40E_STAT(struct i40e_pf, _name, _stat)
#define I40E_VSI_STAT(_name, _stat) \
		I40E_STAT(struct i40e_vsi, _name, _stat)
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#define I40E_VEB_STAT(_name, _stat) \
		I40E_STAT(struct i40e_veb, _name, _stat)
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static const struct i40e_stats i40e_gstrings_net_stats[] = {
	I40E_NETDEV_STAT(rx_packets),
	I40E_NETDEV_STAT(tx_packets),
	I40E_NETDEV_STAT(rx_bytes),
	I40E_NETDEV_STAT(tx_bytes),
	I40E_NETDEV_STAT(rx_errors),
	I40E_NETDEV_STAT(tx_errors),
	I40E_NETDEV_STAT(rx_dropped),
	I40E_NETDEV_STAT(tx_dropped),
	I40E_NETDEV_STAT(collisions),
	I40E_NETDEV_STAT(rx_length_errors),
	I40E_NETDEV_STAT(rx_crc_errors),
};

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static const struct i40e_stats i40e_gstrings_veb_stats[] = {
	I40E_VEB_STAT("rx_bytes", stats.rx_bytes),
	I40E_VEB_STAT("tx_bytes", stats.tx_bytes),
	I40E_VEB_STAT("rx_unicast", stats.rx_unicast),
	I40E_VEB_STAT("tx_unicast", stats.tx_unicast),
	I40E_VEB_STAT("rx_multicast", stats.rx_multicast),
	I40E_VEB_STAT("tx_multicast", stats.tx_multicast),
	I40E_VEB_STAT("rx_broadcast", stats.rx_broadcast),
	I40E_VEB_STAT("tx_broadcast", stats.tx_broadcast),
	I40E_VEB_STAT("rx_discards", stats.rx_discards),
	I40E_VEB_STAT("tx_discards", stats.tx_discards),
	I40E_VEB_STAT("tx_errors", stats.tx_errors),
	I40E_VEB_STAT("rx_unknown_protocol", stats.rx_unknown_protocol),
};

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static const struct i40e_stats i40e_gstrings_misc_stats[] = {
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	I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
	I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
	I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
	I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
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	I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
	I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
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	I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
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	I40E_VSI_STAT("tx_linearize", tx_linearize),
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	I40E_VSI_STAT("tx_force_wb", tx_force_wb),
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	I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
	I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
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};

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/* These PF_STATs might look like duplicates of some NETDEV_STATs,
 * but they are separate.  This device supports Virtualization, and
 * as such might have several netdevs supporting VMDq and FCoE going
 * through a single port.  The NETDEV_STATs are for individual netdevs
 * seen at the top of the stack, and the PF_STATs are for the physical
 * function at the bottom of the stack hosting those netdevs.
 *
 * The PF_STATs are appended to the netdev stats only when ethtool -S
 * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
 */
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static const struct i40e_stats i40e_gstrings_stats[] = {
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	I40E_PF_STAT("rx_bytes", stats.eth.rx_bytes),
	I40E_PF_STAT("tx_bytes", stats.eth.tx_bytes),
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	I40E_PF_STAT("rx_unicast", stats.eth.rx_unicast),
	I40E_PF_STAT("tx_unicast", stats.eth.tx_unicast),
	I40E_PF_STAT("rx_multicast", stats.eth.rx_multicast),
	I40E_PF_STAT("tx_multicast", stats.eth.tx_multicast),
	I40E_PF_STAT("rx_broadcast", stats.eth.rx_broadcast),
	I40E_PF_STAT("tx_broadcast", stats.eth.tx_broadcast),
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	I40E_PF_STAT("tx_errors", stats.eth.tx_errors),
	I40E_PF_STAT("rx_dropped", stats.eth.rx_discards),
	I40E_PF_STAT("tx_dropped_link_down", stats.tx_dropped_link_down),
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	I40E_PF_STAT("rx_crc_errors", stats.crc_errors),
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	I40E_PF_STAT("illegal_bytes", stats.illegal_bytes),
	I40E_PF_STAT("mac_local_faults", stats.mac_local_faults),
	I40E_PF_STAT("mac_remote_faults", stats.mac_remote_faults),
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	I40E_PF_STAT("tx_timeout", tx_timeout_count),
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	I40E_PF_STAT("rx_csum_bad", hw_csum_rx_error),
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	I40E_PF_STAT("rx_length_errors", stats.rx_length_errors),
	I40E_PF_STAT("link_xon_rx", stats.link_xon_rx),
	I40E_PF_STAT("link_xoff_rx", stats.link_xoff_rx),
	I40E_PF_STAT("link_xon_tx", stats.link_xon_tx),
	I40E_PF_STAT("link_xoff_tx", stats.link_xoff_tx),
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	I40E_PF_STAT("priority_xon_rx", stats.priority_xon_rx),
	I40E_PF_STAT("priority_xoff_rx", stats.priority_xoff_rx),
	I40E_PF_STAT("priority_xon_tx", stats.priority_xon_tx),
	I40E_PF_STAT("priority_xoff_tx", stats.priority_xoff_tx),
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	I40E_PF_STAT("rx_size_64", stats.rx_size_64),
	I40E_PF_STAT("rx_size_127", stats.rx_size_127),
	I40E_PF_STAT("rx_size_255", stats.rx_size_255),
	I40E_PF_STAT("rx_size_511", stats.rx_size_511),
	I40E_PF_STAT("rx_size_1023", stats.rx_size_1023),
	I40E_PF_STAT("rx_size_1522", stats.rx_size_1522),
	I40E_PF_STAT("rx_size_big", stats.rx_size_big),
	I40E_PF_STAT("tx_size_64", stats.tx_size_64),
	I40E_PF_STAT("tx_size_127", stats.tx_size_127),
	I40E_PF_STAT("tx_size_255", stats.tx_size_255),
	I40E_PF_STAT("tx_size_511", stats.tx_size_511),
	I40E_PF_STAT("tx_size_1023", stats.tx_size_1023),
	I40E_PF_STAT("tx_size_1522", stats.tx_size_1522),
	I40E_PF_STAT("tx_size_big", stats.tx_size_big),
	I40E_PF_STAT("rx_undersize", stats.rx_undersize),
	I40E_PF_STAT("rx_fragments", stats.rx_fragments),
	I40E_PF_STAT("rx_oversize", stats.rx_oversize),
	I40E_PF_STAT("rx_jabber", stats.rx_jabber),
	I40E_PF_STAT("VF_admin_queue_requests", vf_aq_requests),
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	I40E_PF_STAT("arq_overflows", arq_overflows),
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	I40E_PF_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
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	I40E_PF_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped),
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	I40E_PF_STAT("fdir_flush_cnt", fd_flush_cnt),
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	I40E_PF_STAT("fdir_atr_match", stats.fd_atr_match),
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	I40E_PF_STAT("fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
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	I40E_PF_STAT("fdir_atr_status", stats.fd_atr_status),
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	I40E_PF_STAT("fdir_sb_match", stats.fd_sb_match),
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	I40E_PF_STAT("fdir_sb_status", stats.fd_sb_status),
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	/* LPI stats */
	I40E_PF_STAT("tx_lpi_status", stats.tx_lpi_status),
	I40E_PF_STAT("rx_lpi_status", stats.rx_lpi_status),
	I40E_PF_STAT("tx_lpi_count", stats.tx_lpi_count),
	I40E_PF_STAT("rx_lpi_count", stats.rx_lpi_count),
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};

#define I40E_QUEUE_STATS_LEN(n) \
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	(((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs \
	    * 2 /* Tx and Rx together */                                     \
	    * (sizeof(struct i40e_queue_stats) / sizeof(u64)))
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#define I40E_GLOBAL_STATS_LEN	ARRAY_SIZE(i40e_gstrings_stats)
#define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
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#define I40E_MISC_STATS_LEN	ARRAY_SIZE(i40e_gstrings_misc_stats)
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#define I40E_VSI_STATS_LEN(n)   (I40E_NETDEV_STATS_LEN + \
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				 I40E_MISC_STATS_LEN + \
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				 I40E_QUEUE_STATS_LEN((n)))
#define I40E_PFC_STATS_LEN ( \
		(FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_rx) + \
		 FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_rx) + \
		 FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_tx) + \
		 FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_tx) + \
		 FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_2_xoff)) \
		 / sizeof(u64))
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#define I40E_VEB_TC_STATS_LEN ( \
		(FIELD_SIZEOF(struct i40e_veb, tc_stats.tc_rx_packets) + \
		 FIELD_SIZEOF(struct i40e_veb, tc_stats.tc_rx_bytes) + \
		 FIELD_SIZEOF(struct i40e_veb, tc_stats.tc_tx_packets) + \
		 FIELD_SIZEOF(struct i40e_veb, tc_stats.tc_tx_bytes)) \
		 / sizeof(u64))
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#define I40E_VEB_STATS_LEN	ARRAY_SIZE(i40e_gstrings_veb_stats)
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#define I40E_VEB_STATS_TOTAL	(I40E_VEB_STATS_LEN + I40E_VEB_TC_STATS_LEN)
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#define I40E_PF_STATS_LEN(n)	(I40E_GLOBAL_STATS_LEN + \
				 I40E_PFC_STATS_LEN + \
				 I40E_VSI_STATS_LEN((n)))

enum i40e_ethtool_test_id {
	I40E_ETH_TEST_REG = 0,
	I40E_ETH_TEST_EEPROM,
	I40E_ETH_TEST_INTR,
	I40E_ETH_TEST_LINK,
};

static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
	"Register test  (offline)",
	"Eeprom test    (offline)",
	"Interrupt test (offline)",
	"Link test   (on/offline)"
};

#define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)

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struct i40e_priv_flags {
	char flag_string[ETH_GSTRING_LEN];
	u64 flag;
	bool read_only;
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};

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#define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
	.flag_string = _name, \
	.flag = _flag, \
	.read_only = _read_only, \
}

static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
	/* NOTE: MFP setting cannot be changed */
	I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
	I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
	I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
	I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
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	I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
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	I40E_PRIV_FLAG("link-down-on-close",
		       I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
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	I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
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	I40E_PRIV_FLAG("disable-source-pruning",
		       I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
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	I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
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};

#define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
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/* Private flags with a global effect, restricted to PF 0 */
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static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
	I40E_PRIV_FLAG("vf-true-promisc-support",
		       I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
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};

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#define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
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/**
 * i40e_partition_setting_complaint - generic complaint for MFP restriction
 * @pf: the PF struct
 **/
static void i40e_partition_setting_complaint(struct i40e_pf *pf)
{
	dev_info(&pf->pdev->dev,
		 "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");
}

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/**
 * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
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 * @pf: PF struct with phy_types
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 * @ks: ethtool link ksettings struct to fill out
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 *
 **/
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static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
				     struct ethtool_link_ksettings *ks)
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{
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	struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
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	u64 phy_types = pf->hw.phy.phy_types;

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	ethtool_link_ksettings_zero_link_mode(ks, supported);
	ethtool_link_ksettings_zero_link_mode(ks, advertising);
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	if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseT_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     1000baseT_Full);
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		if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
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			ethtool_link_ksettings_add_link_mode(ks, supported,
							     100baseT_Full);
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     100baseT_Full);
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		}
	}
	if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
	    phy_types & I40E_CAP_PHY_TYPE_XFI ||
	    phy_types & I40E_CAP_PHY_TYPE_SFI ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
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	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseT_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseT_Full);
	}
	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseT_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseT_Full);
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	}
	if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
	    phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseCR4_Full);
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	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseCR4_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     40000baseCR4_Full);
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	}
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	if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     100baseT_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     100baseT_Full);
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	}
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	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseT_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     1000baseT_Full);
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	}
	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4)
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseSR4_Full);
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	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4)
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseLR4_Full);
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	if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseLR4_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     40000baseLR4_Full);
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	}
	if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     20000baseKR2_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     20000baseKR2_Full);
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	}
	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseKX4_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseKX4_Full);
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	}
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	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
	    !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseKR_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseKR_Full);
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	}
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	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
	    !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseKX_Full);
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		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
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			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     1000baseKX_Full);
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	}
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	/* need to add 25G PHY types */
	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     25000baseKR_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     25000baseKR_Full);
	}
	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     25000baseCR_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     25000baseCR_Full);
	}
	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
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	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
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		ethtool_link_ksettings_add_link_mode(ks, supported,
						     25000baseSR_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     25000baseSR_Full);
	}
	if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     25000baseCR_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     25000baseCR_Full);
	}
	/* need to add new 10G PHY types */
	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseCR_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseCR_Full);
	}
	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseSR_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseSR_Full);
	}
	if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseLR_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseLR_Full);
	}
	if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseX_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     1000baseX_Full);
415
	}
416 417 418 419 420
	/* Autoneg PHY types */
	if (phy_types & I40E_CAP_PHY_TYPE_SGMII ||
	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 ||
	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
	    phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 ||
421
	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438
	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
	    phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
	    phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
	    phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL ||
	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
	    phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX ||
	    phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
439 440 441 442
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     Autoneg);
443
	}
444 445
}

J
Jesse Brandeburg 已提交
446
/**
447 448
 * i40e_get_settings_link_up - Get the Link settings for when link is up
 * @hw: hw structure
449
 * @ks: ethtool ksettings to fill in
J
Jesse Brandeburg 已提交
450
 * @netdev: network interface device structure
451
 * @pf: pointer to physical function struct
J
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452
 **/
453
static void i40e_get_settings_link_up(struct i40e_hw *hw,
454
				      struct ethtool_link_ksettings *ks,
455 456
				      struct net_device *netdev,
				      struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
457 458
{
	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
459
	struct ethtool_link_ksettings cap_ksettings;
J
Jesse Brandeburg 已提交
460 461
	u32 link_speed = hw_link_info->link_speed;

462
	/* Initialize supported and advertised settings based on phy settings */
J
Jesse Brandeburg 已提交
463 464 465
	switch (hw_link_info->phy_type) {
	case I40E_PHY_TYPE_40GBASE_CR4:
	case I40E_PHY_TYPE_40GBASE_CR4_CU:
466 467 468 469 470 471
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseCR4_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     40000baseCR4_Full);
J
Jesse Brandeburg 已提交
472
		break;
473 474
	case I40E_PHY_TYPE_XLAUI:
	case I40E_PHY_TYPE_XLPPI:
475
	case I40E_PHY_TYPE_40GBASE_AOC:
476 477
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseCR4_Full);
478
		break;
J
Jesse Brandeburg 已提交
479
	case I40E_PHY_TYPE_40GBASE_SR4:
480 481
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseSR4_Full);
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Jesse Brandeburg 已提交
482 483
		break;
	case I40E_PHY_TYPE_40GBASE_LR4:
484 485
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseLR4_Full);
J
Jesse Brandeburg 已提交
486
		break;
487 488
	case I40E_PHY_TYPE_25GBASE_SR:
	case I40E_PHY_TYPE_25GBASE_LR:
489 490
	case I40E_PHY_TYPE_10GBASE_SR:
	case I40E_PHY_TYPE_10GBASE_LR:
491 492
	case I40E_PHY_TYPE_1000BASE_SX:
	case I40E_PHY_TYPE_1000BASE_LX:
493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     25000baseSR_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     25000baseSR_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseSR_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     10000baseSR_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseLR_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     10000baseLR_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseX_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     1000baseX_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseT_Full);
513 514 515 516
		if (hw_link_info->module_type[2] &
		    I40E_MODULE_TYPE_1000BASE_SX ||
		    hw_link_info->module_type[2] &
		    I40E_MODULE_TYPE_1000BASE_LX) {
517 518
			ethtool_link_ksettings_add_link_mode(ks, supported,
							     1000baseT_Full);
519 520
			if (hw_link_info->requested_speeds &
			    I40E_LINK_SPEED_1GB)
521 522
				ethtool_link_ksettings_add_link_mode(
				     ks, advertising, 1000baseT_Full);
523
		}
524
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
525 526
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseT_Full);
527
		break;
528
	case I40E_PHY_TYPE_10GBASE_T:
529
	case I40E_PHY_TYPE_1000BASE_T:
530
	case I40E_PHY_TYPE_100BASE_TX:
531 532 533 534 535 536 537 538
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseT_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseT_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     100baseT_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
539
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
540 541
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseT_Full);
542
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
543 544
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     1000baseT_Full);
545
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
546 547
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     100baseT_Full);
548
		break;
549
	case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
550 551 552 553 554 555
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseT_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     1000baseT_Full);
556
		break;
557 558
	case I40E_PHY_TYPE_10GBASE_CR1_CU:
	case I40E_PHY_TYPE_10GBASE_CR1:
559 560 561 562 563 564
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseT_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     10000baseT_Full);
565 566 567 568 569
		break;
	case I40E_PHY_TYPE_XAUI:
	case I40E_PHY_TYPE_XFI:
	case I40E_PHY_TYPE_SFI:
	case I40E_PHY_TYPE_10GBASE_SFPP_CU:
570
	case I40E_PHY_TYPE_10GBASE_AOC:
571 572 573 574 575
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseT_Full);
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     10000baseT_Full);
576 577
		break;
	case I40E_PHY_TYPE_SGMII:
578 579 580
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseT_Full);
581
		if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
582 583
			ethtool_link_ksettings_add_link_mode(ks, advertising,
							     1000baseT_Full);
584
		if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
585 586
			ethtool_link_ksettings_add_link_mode(ks, supported,
							     100baseT_Full);
587 588
			if (hw_link_info->requested_speeds &
			    I40E_LINK_SPEED_100MB)
589 590
				ethtool_link_ksettings_add_link_mode(
				      ks, advertising, 100baseT_Full);
591
		}
592
		break;
593
	case I40E_PHY_TYPE_40GBASE_KR4:
594
	case I40E_PHY_TYPE_25GBASE_KR:
595 596 597 598
	case I40E_PHY_TYPE_20GBASE_KR2:
	case I40E_PHY_TYPE_10GBASE_KR:
	case I40E_PHY_TYPE_10GBASE_KX4:
	case I40E_PHY_TYPE_1000BASE_KX:
599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     40000baseKR4_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     25000baseKR_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     20000baseKR2_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseKR_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseKX4_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     1000baseKX_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     40000baseKR4_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     25000baseKR_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     20000baseKR2_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     10000baseKR_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     10000baseKX4_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     1000baseKX_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
625
		break;
626
	case I40E_PHY_TYPE_25GBASE_CR:
627 628 629 630 631 632 633
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     25000baseCR_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     25000baseCR_Full);
		break;
634 635
	case I40E_PHY_TYPE_25GBASE_AOC:
	case I40E_PHY_TYPE_25GBASE_ACC:
636 637 638 639 640 641 642 643 644 645 646
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     25000baseCR_Full);

		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     25000baseCR_Full);
		ethtool_link_ksettings_add_link_mode(ks, supported,
						     10000baseCR_Full);
		ethtool_link_ksettings_add_link_mode(ks, advertising,
						     10000baseCR_Full);
647
		break;
648 649
	default:
		/* if we got here and link is up something bad is afoot */
650 651
		netdev_info(netdev,
			    "WARNING: Link is up but PHY type 0x%x is not recognized.\n",
652
			    hw_link_info->phy_type);
J
Jesse Brandeburg 已提交
653 654
	}

655
	/* Now that we've worked out everything that could be supported by the
A
Alan Brady 已提交
656 657
	 * current PHY type, get what is supported by the NVM and intersect
	 * them to get what is truly supported
658
	 */
659 660 661
	memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
	i40e_phy_type_to_ethtool(pf, &cap_ksettings);
	ethtool_intersect_link_masks(ks, &cap_ksettings);
662

663 664 665
	/* Set speed and duplex */
	switch (link_speed) {
	case I40E_LINK_SPEED_40GB:
666
		ks->base.speed = SPEED_40000;
667
		break;
668
	case I40E_LINK_SPEED_25GB:
669
		ks->base.speed = SPEED_25000;
670
		break;
671
	case I40E_LINK_SPEED_20GB:
672
		ks->base.speed = SPEED_20000;
673
		break;
674
	case I40E_LINK_SPEED_10GB:
675
		ks->base.speed = SPEED_10000;
676 677
		break;
	case I40E_LINK_SPEED_1GB:
678
		ks->base.speed = SPEED_1000;
679 680
		break;
	case I40E_LINK_SPEED_100MB:
681
		ks->base.speed = SPEED_100;
682 683 684 685
		break;
	default:
		break;
	}
686
	ks->base.duplex = DUPLEX_FULL;
687 688 689 690 691
}

/**
 * i40e_get_settings_link_down - Get the Link settings for when link is down
 * @hw: hw structure
692 693
 * @ks: ethtool ksettings to fill in
 * @pf: pointer to physical function struct
694 695 696 697
 *
 * Reports link settings that can be determined when link is down
 **/
static void i40e_get_settings_link_down(struct i40e_hw *hw,
698
					struct ethtool_link_ksettings *ks,
699
					struct i40e_pf *pf)
700 701
{
	/* link is down and the driver needs to fall back on
702
	 * supported phy types to figure out what info to display
703
	 */
704
	i40e_phy_type_to_ethtool(pf, ks);
705 706

	/* With no link speed and duplex are unknown */
707 708
	ks->base.speed = SPEED_UNKNOWN;
	ks->base.duplex = DUPLEX_UNKNOWN;
709 710 711
}

/**
712
 * i40e_get_link_ksettings - Get Link Speed and Duplex settings
713
 * @netdev: network interface device structure
714
 * @ks: ethtool ksettings
715 716 717
 *
 * Reports speed/duplex settings based on media_type
 **/
718
static int i40e_get_link_ksettings(struct net_device *netdev,
719
				   struct ethtool_link_ksettings *ks)
720 721 722 723 724 725
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
	bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
726 727 728

	ethtool_link_ksettings_zero_link_mode(ks, supported);
	ethtool_link_ksettings_zero_link_mode(ks, advertising);
729 730

	if (link_up)
731
		i40e_get_settings_link_up(hw, ks, netdev, pf);
732
	else
733
		i40e_get_settings_link_down(hw, ks, pf);
734 735 736

	/* Now set the settings that don't rely on link being up/down */
	/* Set autoneg settings */
737 738
	ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
			    AUTONEG_ENABLE : AUTONEG_DISABLE);
J
Jesse Brandeburg 已提交
739

740
	/* Set media type settings */
741 742
	switch (hw->phy.media_type) {
	case I40E_MEDIA_TYPE_BACKPLANE:
743 744 745
		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
		ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
746
		ethtool_link_ksettings_add_link_mode(ks, advertising,
747
						     Backplane);
748
		ks->base.port = PORT_NONE;
749 750
		break;
	case I40E_MEDIA_TYPE_BASET:
751 752 753
		ethtool_link_ksettings_add_link_mode(ks, supported, TP);
		ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
		ks->base.port = PORT_TP;
754 755 756
		break;
	case I40E_MEDIA_TYPE_DA:
	case I40E_MEDIA_TYPE_CX4:
757 758 759
		ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
		ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
		ks->base.port = PORT_DA;
760 761
		break;
	case I40E_MEDIA_TYPE_FIBER:
762 763
		ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
		ks->base.port = PORT_FIBRE;
764 765 766
		break;
	case I40E_MEDIA_TYPE_UNKNOWN:
	default:
767
		ks->base.port = PORT_OTHER;
768
		break;
J
Jesse Brandeburg 已提交
769 770
	}

771
	/* Set flow control settings */
772
	ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
773

774
	switch (hw->fc.requested_mode) {
775
	case I40E_FC_FULL:
776
		ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
777 778
		break;
	case I40E_FC_TX_PAUSE:
779
		ethtool_link_ksettings_add_link_mode(ks, advertising,
780
						     Asym_Pause);
781 782
		break;
	case I40E_FC_RX_PAUSE:
783
		ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
784
		ethtool_link_ksettings_add_link_mode(ks, advertising,
785
						     Asym_Pause);
786 787
		break;
	default:
788 789 790
		ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
		ethtool_link_ksettings_del_link_mode(ks, advertising,
						     Asym_Pause);
791 792 793
		break;
	}

J
Jesse Brandeburg 已提交
794 795 796
	return 0;
}

797
/**
798
 * i40e_set_link_ksettings - Set Speed and Duplex
799
 * @netdev: network interface device structure
800
 * @ks: ethtool ksettings
801 802 803
 *
 * Set speed/duplex per media_types advertised/forced
 **/
804
static int i40e_set_link_ksettings(struct net_device *netdev,
805
				   const struct ethtool_link_ksettings *ks)
806 807 808
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_aq_get_phy_abilities_resp abilities;
809 810
	struct ethtool_link_ksettings safe_ks;
	struct ethtool_link_ksettings copy_ks;
811 812 813 814
	struct i40e_aq_set_phy_config config;
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_hw *hw = &pf->hw;
815
	bool autoneg_changed = false;
816
	i40e_status status = 0;
817
	int timeout = 50;
818
	int err = 0;
819
	u8 autoneg;
820

821 822 823 824 825 826 827
	/* Changing port settings is not supported if this isn't the
	 * port's controlling PF
	 */
	if (hw->partition_id != 1) {
		i40e_partition_setting_complaint(pf);
		return -EOPNOTSUPP;
	}
828 829 830 831
	if (vsi != pf->vsi[pf->lan_vsi])
		return -EOPNOTSUPP;
	if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
	    hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
832
	    hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
S
Serey Kong 已提交
833
	    hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
834
	    hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
835
		return -EOPNOTSUPP;
836 837 838
	if (hw->device_id == I40E_DEV_ID_KX_B ||
	    hw->device_id == I40E_DEV_ID_KX_C ||
	    hw->device_id == I40E_DEV_ID_20G_KR2 ||
839
	    hw->device_id == I40E_DEV_ID_20G_KR2_A ||
840
	    hw->device_id == I40E_DEV_ID_25G_B ||
841
	    hw->device_id == I40E_DEV_ID_KX_X722) {
842 843 844 845
		netdev_info(netdev, "Changing settings is not supported on backplane.\n");
		return -EOPNOTSUPP;
	}

846 847
	/* copy the ksettings to copy_ks to avoid modifying the origin */
	memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
848

849 850
	/* save autoneg out of ksettings */
	autoneg = copy_ks.base.autoneg;
851

852 853 854 855 856 857 858
	/* get our own copy of the bits to check against */
	memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
	safe_ks.base.cmd = copy_ks.base.cmd;
	safe_ks.base.link_mode_masks_nwords =
		copy_ks.base.link_mode_masks_nwords;
	i40e_get_link_ksettings(netdev, &safe_ks);

859 860 861 862 863 864 865
	/* Get link modes supported by hardware and check against modes
	 * requested by the user.  Return an error if unsupported mode was set.
	 */
	if (!bitmap_subset(copy_ks.link_modes.advertising,
			   safe_ks.link_modes.supported,
			   __ETHTOOL_LINK_MODE_MASK_NBITS))
		return -EINVAL;
866

867
	/* set autoneg back to what it currently is */
868
	copy_ks.base.autoneg = safe_ks.base.autoneg;
869

870 871
	/* If copy_ks.base and safe_ks.base are not the same now, then they are
	 * trying to set something that we do not support.
872
	 */
873 874
	if (memcmp(&copy_ks.base, &safe_ks.base,
		   sizeof(struct ethtool_link_settings)))
875 876
		return -EOPNOTSUPP;

877
	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
878 879 880
		timeout--;
		if (!timeout)
			return -EBUSY;
881
		usleep_range(1000, 2000);
882
	}
883 884 885 886

	/* Get the current phy config */
	status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
					      NULL);
887 888 889 890
	if (status) {
		err = -EAGAIN;
		goto done;
	}
891

892
	/* Copy abilities to config in case autoneg is not
893 894 895 896 897 898 899 900 901
	 * set below
	 */
	memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
	config.abilities = abilities.abilities;

	/* Check autoneg */
	if (autoneg == AUTONEG_ENABLE) {
		/* If autoneg was not already enabled */
		if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
902
			/* If autoneg is not supported, return error */
903 904 905
			if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
								   supported,
								   Autoneg)) {
906
				netdev_info(netdev, "Autoneg not supported on this phy\n");
907 908
				err = -EINVAL;
				goto done;
909 910
			}
			/* Autoneg is allowed to change */
911 912
			config.abilities = abilities.abilities |
					   I40E_AQ_PHY_ENABLE_AN;
913
			autoneg_changed = true;
914 915 916 917
		}
	} else {
		/* If autoneg is currently enabled */
		if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
918 919 920
			/* If autoneg is supported 10GBASE_T is the only PHY
			 * that can disable it, so otherwise return error
			 */
921 922 923
			if (ethtool_link_ksettings_test_link_mode(&safe_ks,
								  supported,
								  Autoneg) &&
924 925 926
			    hw->phy.link_info.phy_type !=
			    I40E_PHY_TYPE_10GBASE_T) {
				netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
927 928
				err = -EINVAL;
				goto done;
929 930
			}
			/* Autoneg is allowed to change */
M
Mitch Williams 已提交
931
			config.abilities = abilities.abilities &
932
					   ~I40E_AQ_PHY_ENABLE_AN;
933
			autoneg_changed = true;
934 935 936
		}
	}

937 938
	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
						  100baseT_Full))
939
		config.link_speed |= I40E_LINK_SPEED_100MB;
940 941 942 943 944 945
	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
						  1000baseT_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  1000baseX_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  1000baseKX_Full))
946
		config.link_speed |= I40E_LINK_SPEED_1GB;
947 948 949 950 951 952 953 954 955
	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
						  10000baseT_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  10000baseKX4_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  10000baseKR_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  10000baseCR_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
J
Jakub Pawlak 已提交
956 957 958
						  10000baseSR_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  10000baseLR_Full))
959
		config.link_speed |= I40E_LINK_SPEED_10GB;
960 961
	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
						  20000baseKR2_Full))
962
		config.link_speed |= I40E_LINK_SPEED_20GB;
963 964 965 966 967 968 969 970 971 972 973 974 975 976 977
	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
						  25000baseCR_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  25000baseKR_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  25000baseSR_Full))
		config.link_speed |= I40E_LINK_SPEED_25GB;
	if (ethtool_link_ksettings_test_link_mode(ks, advertising,
						  40000baseKR4_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  40000baseCR4_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  40000baseSR4_Full) ||
	    ethtool_link_ksettings_test_link_mode(ks, advertising,
						  40000baseLR4_Full))
978
		config.link_speed |= I40E_LINK_SPEED_40GB;
979

980 981 982 983 984 985
	/* If speed didn't get set, set it to what it currently is.
	 * This is needed because if advertise is 0 (as it is when autoneg
	 * is disabled) then speed won't get set.
	 */
	if (!config.link_speed)
		config.link_speed = abilities.link_speed;
986
	if (autoneg_changed || abilities.link_speed != config.link_speed) {
987 988
		/* copy over the rest of the abilities */
		config.phy_type = abilities.phy_type;
989
		config.phy_type_ext = abilities.phy_type_ext;
990 991 992
		config.eee_capability = abilities.eee_capability;
		config.eeer = abilities.eeer_val;
		config.low_power_ctrl = abilities.d3_lpan;
993 994
		config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
				    I40E_AQ_PHY_FEC_CONFIG_MASK;
995

996 997
		/* save the requested speeds */
		hw->phy.link_info.requested_speeds = config.link_speed;
998 999 1000 1001 1002 1003 1004
		/* set link and auto negotiation so changes take effect */
		config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
		/* If link is up put link down */
		if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
			/* Tell the OS link is going down, the link will go
			 * back up when fw says it is ready asynchronously
			 */
M
Matt Jared 已提交
1005
			i40e_print_link_message(vsi, false);
1006 1007 1008
			netif_carrier_off(netdev);
			netif_tx_stop_all_queues(netdev);
		}
1009 1010 1011 1012

		/* make the aq call */
		status = i40e_aq_set_phy_config(hw, &config, NULL);
		if (status) {
1013 1014
			netdev_info(netdev,
				    "Set phy config failed, err %s aq_err %s\n",
1015 1016
				    i40e_stat_str(hw, status),
				    i40e_aq_str(hw, hw->aq.asq_last_status));
1017 1018
			err = -EAGAIN;
			goto done;
1019 1020
		}

1021
		status = i40e_update_link_info(hw);
1022
		if (status)
1023 1024
			netdev_dbg(netdev,
				   "Updating link info failed with err %s aq_err %s\n",
1025 1026
				   i40e_stat_str(hw, status),
				   i40e_aq_str(hw, hw->aq.asq_last_status));
1027 1028 1029 1030 1031

	} else {
		netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
	}

1032
done:
1033
	clear_bit(__I40E_CONFIG_BUSY, pf->state);
1034

1035 1036 1037
	return err;
}

J
Jesse Brandeburg 已提交
1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048
static int i40e_nway_reset(struct net_device *netdev)
{
	/* restart autonegotiation */
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_hw *hw = &pf->hw;
	bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
	i40e_status ret = 0;

	ret = i40e_aq_set_link_restart_an(hw, link_up, NULL);
	if (ret) {
1049 1050 1051
		netdev_info(netdev, "link restart failed, err %s aq_err %s\n",
			    i40e_stat_str(hw, ret),
			    i40e_aq_str(hw, hw->aq.asq_last_status));
J
Jesse Brandeburg 已提交
1052 1053 1054 1055 1056 1057
		return -EIO;
	}

	return 0;
}

J
Jesse Brandeburg 已提交
1058 1059
/**
 * i40e_get_pauseparam -  Get Flow Control status
1060 1061 1062
 * @netdev: netdevice structure
 * @pause: buffer to return pause parameters
 *
J
Jesse Brandeburg 已提交
1063 1064 1065 1066 1067 1068 1069 1070 1071
 * Return tx/rx-pause status
 **/
static void i40e_get_pauseparam(struct net_device *netdev,
				struct ethtool_pauseparam *pause)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1072
	struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
J
Jesse Brandeburg 已提交
1073 1074 1075 1076 1077

	pause->autoneg =
		((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
		  AUTONEG_ENABLE : AUTONEG_DISABLE);

1078 1079 1080 1081 1082 1083 1084
	/* PFC enabled so report LFC as off */
	if (dcbx_cfg->pfc.pfcenable) {
		pause->rx_pause = 0;
		pause->tx_pause = 0;
		return;
	}

1085
	if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
J
Jesse Brandeburg 已提交
1086
		pause->rx_pause = 1;
1087
	} else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
J
Jesse Brandeburg 已提交
1088
		pause->tx_pause = 1;
1089 1090 1091 1092
	} else if (hw->fc.current_mode == I40E_FC_FULL) {
		pause->rx_pause = 1;
		pause->tx_pause = 1;
	}
J
Jesse Brandeburg 已提交
1093 1094
}

1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107
/**
 * i40e_set_pauseparam - Set Flow Control parameter
 * @netdev: network interface device structure
 * @pause: return tx/rx flow control status
 **/
static int i40e_set_pauseparam(struct net_device *netdev,
			       struct ethtool_pauseparam *pause)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1108
	struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1109 1110 1111
	bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
	i40e_status status;
	u8 aq_failures;
1112
	int err = 0;
1113

1114 1115 1116 1117 1118 1119 1120 1121
	/* Changing the port's flow control is not supported if this isn't the
	 * port's controlling PF
	 */
	if (hw->partition_id != 1) {
		i40e_partition_setting_complaint(pf);
		return -EOPNOTSUPP;
	}

1122 1123 1124 1125 1126 1127 1128 1129 1130 1131
	if (vsi != pf->vsi[pf->lan_vsi])
		return -EOPNOTSUPP;

	if (pause->autoneg != ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
	    AUTONEG_ENABLE : AUTONEG_DISABLE)) {
		netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
		return -EOPNOTSUPP;
	}

	/* If we have link and don't have autoneg */
1132
	if (!test_bit(__I40E_DOWN, pf->state) &&
1133 1134 1135 1136 1137
	    !(hw_link_info->an_info & I40E_AQ_AN_COMPLETED)) {
		/* Send message that it might not necessarily work*/
		netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
	}

1138 1139 1140
	if (dcbx_cfg->pfc.pfcenable) {
		netdev_info(netdev,
			    "Priority flow control enabled. Cannot set link flow control.\n");
1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
		return -EOPNOTSUPP;
	}

	if (pause->rx_pause && pause->tx_pause)
		hw->fc.requested_mode = I40E_FC_FULL;
	else if (pause->rx_pause && !pause->tx_pause)
		hw->fc.requested_mode = I40E_FC_RX_PAUSE;
	else if (!pause->rx_pause && pause->tx_pause)
		hw->fc.requested_mode = I40E_FC_TX_PAUSE;
	else if (!pause->rx_pause && !pause->tx_pause)
		hw->fc.requested_mode = I40E_FC_NONE;
	else
		 return -EINVAL;

1155 1156 1157
	/* Tell the OS link is going down, the link will go back up when fw
	 * says it is ready asynchronously
	 */
M
Matt Jared 已提交
1158
	i40e_print_link_message(vsi, false);
1159 1160 1161
	netif_carrier_off(netdev);
	netif_tx_stop_all_queues(netdev);

1162 1163 1164 1165
	/* Set the fc mode and only restart an if link is up*/
	status = i40e_set_fc(hw, &aq_failures, link_up);

	if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1166 1167 1168
		netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n",
			    i40e_stat_str(hw, status),
			    i40e_aq_str(hw, hw->aq.asq_last_status));
1169 1170 1171
		err = -EAGAIN;
	}
	if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1172 1173 1174
		netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n",
			    i40e_stat_str(hw, status),
			    i40e_aq_str(hw, hw->aq.asq_last_status));
1175 1176 1177
		err = -EAGAIN;
	}
	if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1178 1179 1180
		netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n",
			    i40e_stat_str(hw, status),
			    i40e_aq_str(hw, hw->aq.asq_last_status));
1181 1182 1183
		err = -EAGAIN;
	}

1184
	if (!test_bit(__I40E_DOWN, pf->state)) {
1185 1186
		/* Give it a little more time to try to come back */
		msleep(75);
1187
		if (!test_bit(__I40E_DOWN, pf->state))
1188 1189
			return i40e_nway_reset(netdev);
	}
1190 1191 1192 1193

	return err;
}

J
Jesse Brandeburg 已提交
1194 1195 1196 1197
static u32 i40e_get_msglevel(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
1198 1199 1200 1201
	u32 debug_mask = pf->hw.debug_mask;

	if (debug_mask)
		netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
J
Jesse Brandeburg 已提交
1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212

	return pf->msg_enable;
}

static void i40e_set_msglevel(struct net_device *netdev, u32 data)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;

	if (I40E_DEBUG_USER & data)
		pf->hw.debug_mask = data;
1213 1214
	else
		pf->msg_enable = data;
J
Jesse Brandeburg 已提交
1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
}

static int i40e_get_regs_len(struct net_device *netdev)
{
	int reg_count = 0;
	int i;

	for (i = 0; i40e_reg_list[i].offset != 0; i++)
		reg_count += i40e_reg_list[i].elements;

	return reg_count * sizeof(u32);
}

static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
			  void *p)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u32 *reg_buf = p;
1235
	unsigned int i, j, ri;
J
Jesse Brandeburg 已提交
1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263
	u32 reg;

	/* Tell ethtool which driver-version-specific regs output we have.
	 *
	 * At some point, if we have ethtool doing special formatting of
	 * this data, it will rely on this version number to know how to
	 * interpret things.  Hence, this needs to be updated if/when the
	 * diags register table is changed.
	 */
	regs->version = 1;

	/* loop through the diags reg table for what to print */
	ri = 0;
	for (i = 0; i40e_reg_list[i].offset != 0; i++) {
		for (j = 0; j < i40e_reg_list[i].elements; j++) {
			reg = i40e_reg_list[i].offset
				+ (j * i40e_reg_list[i].stride);
			reg_buf[ri++] = rd32(hw, reg);
		}
	}

}

static int i40e_get_eeprom(struct net_device *netdev,
			   struct ethtool_eeprom *eeprom, u8 *bytes)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_hw *hw = &np->vsi->back->hw;
1264
	struct i40e_pf *pf = np->vsi->back;
1265
	int ret_val = 0, len, offset;
1266 1267 1268
	u8 *eeprom_buff;
	u16 i, sectors;
	bool last;
1269 1270
	u32 magic;

1271
#define I40E_NVM_SECTOR_SIZE  4096
J
Jesse Brandeburg 已提交
1272 1273 1274
	if (eeprom->len == 0)
		return -EINVAL;

1275 1276 1277
	/* check for NVMUpdate access method */
	magic = hw->vendor_id | (hw->device_id << 16);
	if (eeprom->magic && eeprom->magic != magic) {
1278 1279
		struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
		int errno = 0;
1280 1281 1282

		/* make sure it is the right magic for NVMUpdate */
		if ((eeprom->magic >> 16) != hw->device_id)
1283
			errno = -EINVAL;
1284 1285
		else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
			 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1286 1287 1288 1289 1290
			errno = -EBUSY;
		else
			ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);

		if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1291
			dev_info(&pf->pdev->dev,
1292 1293 1294 1295
				 "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
				 ret_val, hw->aq.asq_last_status, errno,
				 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
				 cmd->offset, cmd->data_size);
1296 1297 1298 1299 1300

		return errno;
	}

	/* normal ethtool get_eeprom support */
J
Jesse Brandeburg 已提交
1301 1302
	eeprom->magic = hw->vendor_id | (hw->device_id << 16);

1303
	eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
J
Jesse Brandeburg 已提交
1304 1305 1306
	if (!eeprom_buff)
		return -ENOMEM;

1307 1308 1309 1310 1311 1312
	ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
	if (ret_val) {
		dev_info(&pf->pdev->dev,
			 "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
			 ret_val, hw->aq.asq_last_status);
		goto free_buff;
J
Jesse Brandeburg 已提交
1313 1314
	}

1315 1316 1317 1318 1319 1320 1321 1322 1323
	sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
	sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
	len = I40E_NVM_SECTOR_SIZE;
	last = false;
	for (i = 0; i < sectors; i++) {
		if (i == (sectors - 1)) {
			len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
			last = true;
		}
1324 1325
		offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
		ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
1326
				(u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1327
				last, NULL);
1328
		if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1329
			dev_info(&pf->pdev->dev,
1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343
				 "read NVM failed, invalid offset 0x%x\n",
				 offset);
			break;
		} else if (ret_val &&
			   hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
			dev_info(&pf->pdev->dev,
				 "read NVM failed, access, offset 0x%x\n",
				 offset);
			break;
		} else if (ret_val) {
			dev_info(&pf->pdev->dev,
				 "read NVM failed offset %d err=%d status=0x%x\n",
				 offset, ret_val, hw->aq.asq_last_status);
			break;
1344 1345
		}
	}
J
Jesse Brandeburg 已提交
1346

1347
	i40e_release_nvm(hw);
1348
	memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1349
free_buff:
J
Jesse Brandeburg 已提交
1350 1351 1352 1353 1354 1355 1356 1357
	kfree(eeprom_buff);
	return ret_val;
}

static int i40e_get_eeprom_len(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_hw *hw = &np->vsi->back->hw;
1358 1359
	u32 val;

1360 1361 1362 1363 1364
#define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
	if (hw->mac.type == I40E_MAC_X722) {
		val = X722_EEPROM_SCOPE_LIMIT + 1;
		return val;
	}
1365 1366 1367 1368
	val = (rd32(hw, I40E_GLPCI_LBARCTRL)
		& I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
		>> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
	/* register returns value in power of 2, 64Kbyte chunks. */
1369
	val = (64 * 1024) * BIT(val);
1370
	return val;
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Jesse Brandeburg 已提交
1371 1372
}

1373 1374 1375 1376 1377 1378
static int i40e_set_eeprom(struct net_device *netdev,
			   struct ethtool_eeprom *eeprom, u8 *bytes)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_hw *hw = &np->vsi->back->hw;
	struct i40e_pf *pf = np->vsi->back;
1379
	struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1380
	int ret_val = 0;
1381
	int errno = 0;
1382 1383 1384 1385 1386
	u32 magic;

	/* normal ethtool set_eeprom is not supported */
	magic = hw->vendor_id | (hw->device_id << 16);
	if (eeprom->magic == magic)
1387
		errno = -EOPNOTSUPP;
1388
	/* check for NVMUpdate access method */
1389 1390
	else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
		errno = -EINVAL;
1391 1392
	else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
		 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1393 1394 1395
		errno = -EBUSY;
	else
		ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1396

1397
	if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1398
		dev_info(&pf->pdev->dev,
1399 1400 1401 1402
			 "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
			 ret_val, hw->aq.asq_last_status, errno,
			 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
			 cmd->offset, cmd->data_size);
1403 1404 1405 1406

	return errno;
}

J
Jesse Brandeburg 已提交
1407 1408 1409 1410 1411 1412 1413 1414 1415 1416
static void i40e_get_drvinfo(struct net_device *netdev,
			     struct ethtool_drvinfo *drvinfo)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;

	strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, i40e_driver_version_str,
		sizeof(drvinfo->version));
1417
	strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw),
J
Jesse Brandeburg 已提交
1418 1419 1420
		sizeof(drvinfo->fw_version));
	strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
		sizeof(drvinfo->bus_info));
1421
	drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
1422
	if (pf->hw.pf_id == 0)
1423
		drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
J
Jesse Brandeburg 已提交
1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436
}

static void i40e_get_ringparam(struct net_device *netdev,
			       struct ethtool_ringparam *ring)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];

	ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
	ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
	ring->rx_mini_max_pending = 0;
	ring->rx_jumbo_max_pending = 0;
1437 1438
	ring->rx_pending = vsi->rx_rings[0]->count;
	ring->tx_pending = vsi->tx_rings[0]->count;
J
Jesse Brandeburg 已提交
1439 1440 1441 1442
	ring->rx_mini_pending = 0;
	ring->rx_jumbo_pending = 0;
}

1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453
static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
{
	if (i40e_enabled_xdp_vsi(vsi)) {
		return index < vsi->num_queue_pairs ||
			(index >= vsi->alloc_queue_pairs &&
			 index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
	}

	return index < vsi->num_queue_pairs;
}

J
Jesse Brandeburg 已提交
1454 1455 1456 1457 1458
static int i40e_set_ringparam(struct net_device *netdev,
			      struct ethtool_ringparam *ring)
{
	struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
	struct i40e_netdev_priv *np = netdev_priv(netdev);
1459
	struct i40e_hw *hw = &np->vsi->back->hw;
J
Jesse Brandeburg 已提交
1460 1461 1462
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	u32 new_rx_count, new_tx_count;
1463
	u16 tx_alloc_queue_pairs;
1464
	int timeout = 50;
J
Jesse Brandeburg 已提交
1465 1466 1467 1468 1469
	int i, err = 0;

	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
		return -EINVAL;

1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482
	if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
	    ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
	    ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
	    ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
		netdev_info(netdev,
			    "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
			    ring->tx_pending, ring->rx_pending,
			    I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
		return -EINVAL;
	}

	new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
	new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
J
Jesse Brandeburg 已提交
1483 1484

	/* if nothing to do return success */
1485 1486
	if ((new_tx_count == vsi->tx_rings[0]->count) &&
	    (new_rx_count == vsi->rx_rings[0]->count))
J
Jesse Brandeburg 已提交
1487 1488
		return 0;

1489
	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1490 1491 1492
		timeout--;
		if (!timeout)
			return -EBUSY;
J
Jesse Brandeburg 已提交
1493
		usleep_range(1000, 2000);
1494
	}
J
Jesse Brandeburg 已提交
1495 1496 1497 1498

	if (!netif_running(vsi->netdev)) {
		/* simple case - set for the next time the netdev is started */
		for (i = 0; i < vsi->num_queue_pairs; i++) {
1499 1500
			vsi->tx_rings[i]->count = new_tx_count;
			vsi->rx_rings[i]->count = new_rx_count;
1501 1502
			if (i40e_enabled_xdp_vsi(vsi))
				vsi->xdp_rings[i]->count = new_tx_count;
J
Jesse Brandeburg 已提交
1503 1504 1505 1506 1507 1508 1509 1510 1511
		}
		goto done;
	}

	/* We can't just free everything and then setup again,
	 * because the ISRs in MSI-X mode get passed pointers
	 * to the Tx and Rx ring structs.
	 */

1512 1513 1514
	/* alloc updated Tx and XDP Tx resources */
	tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
			       (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
1515
	if (new_tx_count != vsi->tx_rings[0]->count) {
J
Jesse Brandeburg 已提交
1516 1517
		netdev_info(netdev,
			    "Changing Tx descriptor count from %d to %d.\n",
1518
			    vsi->tx_rings[0]->count, new_tx_count);
1519
		tx_rings = kcalloc(tx_alloc_queue_pairs,
J
Jesse Brandeburg 已提交
1520 1521 1522 1523 1524 1525
				   sizeof(struct i40e_ring), GFP_KERNEL);
		if (!tx_rings) {
			err = -ENOMEM;
			goto done;
		}

1526 1527 1528 1529
		for (i = 0; i < tx_alloc_queue_pairs; i++) {
			if (!i40e_active_tx_ring_index(vsi, i))
				continue;

1530
			tx_rings[i] = *vsi->tx_rings[i];
J
Jesse Brandeburg 已提交
1531
			tx_rings[i].count = new_tx_count;
J
Jesse Brandeburg 已提交
1532 1533 1534 1535 1536
			/* the desc and bi pointers will be reallocated in the
			 * setup call
			 */
			tx_rings[i].desc = NULL;
			tx_rings[i].rx_bi = NULL;
J
Jesse Brandeburg 已提交
1537 1538 1539 1540
			err = i40e_setup_tx_descriptors(&tx_rings[i]);
			if (err) {
				while (i) {
					i--;
1541 1542
					if (!i40e_active_tx_ring_index(vsi, i))
						continue;
J
Jesse Brandeburg 已提交
1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553
					i40e_free_tx_resources(&tx_rings[i]);
				}
				kfree(tx_rings);
				tx_rings = NULL;

				goto done;
			}
		}
	}

	/* alloc updated Rx resources */
1554
	if (new_rx_count != vsi->rx_rings[0]->count) {
J
Jesse Brandeburg 已提交
1555 1556
		netdev_info(netdev,
			    "Changing Rx descriptor count from %d to %d\n",
1557
			    vsi->rx_rings[0]->count, new_rx_count);
J
Jesse Brandeburg 已提交
1558 1559 1560 1561 1562 1563 1564 1565
		rx_rings = kcalloc(vsi->alloc_queue_pairs,
				   sizeof(struct i40e_ring), GFP_KERNEL);
		if (!rx_rings) {
			err = -ENOMEM;
			goto free_tx;
		}

		for (i = 0; i < vsi->num_queue_pairs; i++) {
1566 1567 1568
			struct i40e_ring *ring;
			u16 unused;

J
Jesse Brandeburg 已提交
1569
			/* clone ring and setup updated count */
1570
			rx_rings[i] = *vsi->rx_rings[i];
J
Jesse Brandeburg 已提交
1571
			rx_rings[i].count = new_rx_count;
J
Jesse Brandeburg 已提交
1572 1573 1574 1575 1576
			/* the desc and bi pointers will be reallocated in the
			 * setup call
			 */
			rx_rings[i].desc = NULL;
			rx_rings[i].rx_bi = NULL;
1577 1578
			/* Clear cloned XDP RX-queue info before setup call */
			memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
1579 1580 1581 1582
			/* this is to allow wr32 to have something to write to
			 * during early allocation of Rx buffers
			 */
			rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
J
Jesse Brandeburg 已提交
1583
			err = i40e_setup_rx_descriptors(&rx_rings[i]);
1584 1585 1586 1587 1588 1589 1590 1591 1592 1593
			if (err)
				goto rx_unwind;

			/* now allocate the Rx buffers to make sure the OS
			 * has enough memory, any failure here means abort
			 */
			ring = &rx_rings[i];
			unused = I40E_DESC_UNUSED(ring);
			err = i40e_alloc_rx_buffers(ring, unused);
rx_unwind:
J
Jesse Brandeburg 已提交
1594
			if (err) {
1595
				do {
J
Jesse Brandeburg 已提交
1596
					i40e_free_rx_resources(&rx_rings[i]);
1597
				} while (i--);
J
Jesse Brandeburg 已提交
1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611
				kfree(rx_rings);
				rx_rings = NULL;

				goto free_tx;
			}
		}
	}

	/* Bring interface down, copy in the new ring info,
	 * then restore the interface
	 */
	i40e_down(vsi);

	if (tx_rings) {
1612 1613 1614 1615 1616
		for (i = 0; i < tx_alloc_queue_pairs; i++) {
			if (i40e_active_tx_ring_index(vsi, i)) {
				i40e_free_tx_resources(vsi->tx_rings[i]);
				*vsi->tx_rings[i] = tx_rings[i];
			}
J
Jesse Brandeburg 已提交
1617 1618 1619 1620 1621 1622 1623
		}
		kfree(tx_rings);
		tx_rings = NULL;
	}

	if (rx_rings) {
		for (i = 0; i < vsi->num_queue_pairs; i++) {
1624
			i40e_free_rx_resources(vsi->rx_rings[i]);
1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635
			/* get the real tail offset */
			rx_rings[i].tail = vsi->rx_rings[i]->tail;
			/* this is to fake out the allocation routine
			 * into thinking it has to realloc everything
			 * but the recycling logic will let us re-use
			 * the buffers allocated above
			 */
			rx_rings[i].next_to_use = 0;
			rx_rings[i].next_to_clean = 0;
			rx_rings[i].next_to_alloc = 0;
			/* do a struct copy */
1636
			*vsi->rx_rings[i] = rx_rings[i];
J
Jesse Brandeburg 已提交
1637 1638 1639 1640 1641 1642 1643 1644 1645 1646
		}
		kfree(rx_rings);
		rx_rings = NULL;
	}

	i40e_up(vsi);

free_tx:
	/* error cleanup if the Rx allocations failed after getting Tx */
	if (tx_rings) {
1647 1648 1649 1650
		for (i = 0; i < tx_alloc_queue_pairs; i++) {
			if (i40e_active_tx_ring_index(vsi, i))
				i40e_free_tx_resources(vsi->tx_rings[i]);
		}
J
Jesse Brandeburg 已提交
1651 1652 1653 1654 1655
		kfree(tx_rings);
		tx_rings = NULL;
	}

done:
1656
	clear_bit(__I40E_CONFIG_BUSY, pf->state);
J
Jesse Brandeburg 已提交
1657 1658 1659 1660

	return err;
}

1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677
static int i40e_get_stats_count(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;

	if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1) {
		if (pf->lan_veb != I40E_NO_VEB &&
		    pf->flags & I40E_FLAG_VEB_STATS_ENABLED)
			return I40E_PF_STATS_LEN(netdev) + I40E_VEB_STATS_TOTAL;
		else
			return I40E_PF_STATS_LEN(netdev);
	} else {
		return I40E_VSI_STATS_LEN(netdev);
	}
}

J
Jesse Brandeburg 已提交
1678 1679 1680 1681 1682 1683 1684 1685 1686 1687
static int i40e_get_sset_count(struct net_device *netdev, int sset)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;

	switch (sset) {
	case ETH_SS_TEST:
		return I40E_TEST_LEN;
	case ETH_SS_STATS:
1688
		return i40e_get_stats_count(netdev);
1689
	case ETH_SS_PRIV_FLAGS:
1690 1691
		return I40E_PRIV_FLAGS_STR_LEN +
			(pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
J
Jesse Brandeburg 已提交
1692 1693 1694 1695 1696 1697 1698 1699 1700
	default:
		return -EOPNOTSUPP;
	}
}

static void i40e_get_ethtool_stats(struct net_device *netdev,
				   struct ethtool_stats *stats, u64 *data)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
1701
	struct i40e_ring *tx_ring, *rx_ring;
J
Jesse Brandeburg 已提交
1702 1703
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
1704
	unsigned int j;
J
Jesse Brandeburg 已提交
1705 1706 1707
	int i = 0;
	char *p;
	struct rtnl_link_stats64 *net_stats = i40e_get_vsi_stats_struct(vsi);
1708
	unsigned int start;
J
Jesse Brandeburg 已提交
1709 1710 1711 1712 1713 1714 1715 1716

	i40e_update_stats(vsi);

	for (j = 0; j < I40E_NETDEV_STATS_LEN; j++) {
		p = (char *)net_stats + i40e_gstrings_net_stats[j].stat_offset;
		data[i++] = (i40e_gstrings_net_stats[j].sizeof_stat ==
			sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
	}
1717 1718 1719 1720 1721
	for (j = 0; j < I40E_MISC_STATS_LEN; j++) {
		p = (char *)vsi + i40e_gstrings_misc_stats[j].stat_offset;
		data[i++] = (i40e_gstrings_misc_stats[j].sizeof_stat ==
			    sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
	}
1722
	rcu_read_lock();
1723
	for (j = 0; j < vsi->num_queue_pairs; j++) {
1724
		tx_ring = READ_ONCE(vsi->tx_rings[j]);
1725 1726 1727 1728 1729 1730

		if (!tx_ring)
			continue;

		/* process Tx ring statistics */
		do {
1731
			start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
1732 1733
			data[i] = tx_ring->stats.packets;
			data[i + 1] = tx_ring->stats.bytes;
1734
		} while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
1735
		i += 2;
1736 1737 1738 1739

		/* Rx ring is the 2nd half of the queue pair */
		rx_ring = &tx_ring[1];
		do {
1740
			start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
1741 1742
			data[i] = rx_ring->stats.packets;
			data[i + 1] = rx_ring->stats.bytes;
1743
		} while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
1744
		i += 2;
J
Jesse Brandeburg 已提交
1745
	}
1746
	rcu_read_unlock();
1747
	if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
S
Shannon Nelson 已提交
1748 1749
		return;

1750 1751
	if ((pf->lan_veb != I40E_NO_VEB) &&
	    (pf->flags & I40E_FLAG_VEB_STATS_ENABLED)) {
S
Shannon Nelson 已提交
1752
		struct i40e_veb *veb = pf->veb[pf->lan_veb];
J
Jesse Brandeburg 已提交
1753

S
Shannon Nelson 已提交
1754 1755 1756 1757 1758
		for (j = 0; j < I40E_VEB_STATS_LEN; j++) {
			p = (char *)veb;
			p += i40e_gstrings_veb_stats[j].stat_offset;
			data[i++] = (i40e_gstrings_veb_stats[j].sizeof_stat ==
				     sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
J
Jesse Brandeburg 已提交
1759
		}
J
Jesse Brandeburg 已提交
1760 1761 1762 1763 1764 1765
		for (j = 0; j < I40E_MAX_TRAFFIC_CLASS; j++) {
			data[i++] = veb->tc_stats.tc_tx_packets[j];
			data[i++] = veb->tc_stats.tc_tx_bytes[j];
			data[i++] = veb->tc_stats.tc_rx_packets[j];
			data[i++] = veb->tc_stats.tc_rx_bytes[j];
		}
J
Jesse Brandeburg 已提交
1766
	}
S
Shannon Nelson 已提交
1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781
	for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) {
		p = (char *)pf + i40e_gstrings_stats[j].stat_offset;
		data[i++] = (i40e_gstrings_stats[j].sizeof_stat ==
			     sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
	}
	for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
		data[i++] = pf->stats.priority_xon_tx[j];
		data[i++] = pf->stats.priority_xoff_tx[j];
	}
	for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
		data[i++] = pf->stats.priority_xon_rx[j];
		data[i++] = pf->stats.priority_xoff_rx[j];
	}
	for (j = 0; j < I40E_MAX_USER_PRIORITY; j++)
		data[i++] = pf->stats.priority_xon_2_xoff[j];
J
Jesse Brandeburg 已提交
1782 1783 1784 1785 1786 1787 1788 1789 1790
}

static void i40e_get_strings(struct net_device *netdev, u32 stringset,
			     u8 *data)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	char *p = (char *)data;
1791
	unsigned int i;
J
Jesse Brandeburg 已提交
1792 1793 1794

	switch (stringset) {
	case ETH_SS_TEST:
1795 1796
		memcpy(data, i40e_gstrings_test,
		       I40E_TEST_LEN * ETH_GSTRING_LEN);
J
Jesse Brandeburg 已提交
1797 1798 1799 1800 1801 1802 1803
		break;
	case ETH_SS_STATS:
		for (i = 0; i < I40E_NETDEV_STATS_LEN; i++) {
			snprintf(p, ETH_GSTRING_LEN, "%s",
				 i40e_gstrings_net_stats[i].stat_string);
			p += ETH_GSTRING_LEN;
		}
1804 1805 1806 1807 1808
		for (i = 0; i < I40E_MISC_STATS_LEN; i++) {
			snprintf(p, ETH_GSTRING_LEN, "%s",
				 i40e_gstrings_misc_stats[i].stat_string);
			p += ETH_GSTRING_LEN;
		}
J
Jesse Brandeburg 已提交
1809
		for (i = 0; i < vsi->num_queue_pairs; i++) {
1810
			snprintf(p, ETH_GSTRING_LEN, "tx-%d.tx_packets", i);
J
Jesse Brandeburg 已提交
1811
			p += ETH_GSTRING_LEN;
1812
			snprintf(p, ETH_GSTRING_LEN, "tx-%d.tx_bytes", i);
J
Jesse Brandeburg 已提交
1813
			p += ETH_GSTRING_LEN;
1814
			snprintf(p, ETH_GSTRING_LEN, "rx-%d.rx_packets", i);
J
Jesse Brandeburg 已提交
1815
			p += ETH_GSTRING_LEN;
1816
			snprintf(p, ETH_GSTRING_LEN, "rx-%d.rx_bytes", i);
J
Jesse Brandeburg 已提交
1817 1818
			p += ETH_GSTRING_LEN;
		}
1819
		if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
S
Shannon Nelson 已提交
1820 1821
			return;

1822 1823
		if ((pf->lan_veb != I40E_NO_VEB) &&
		    (pf->flags & I40E_FLAG_VEB_STATS_ENABLED)) {
S
Shannon Nelson 已提交
1824 1825 1826
			for (i = 0; i < I40E_VEB_STATS_LEN; i++) {
				snprintf(p, ETH_GSTRING_LEN, "veb.%s",
					i40e_gstrings_veb_stats[i].stat_string);
J
Jesse Brandeburg 已提交
1827 1828
				p += ETH_GSTRING_LEN;
			}
1829 1830
			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
				snprintf(p, ETH_GSTRING_LEN,
1831
					 "veb.tc_%d_tx_packets", i);
1832 1833
				p += ETH_GSTRING_LEN;
				snprintf(p, ETH_GSTRING_LEN,
1834
					 "veb.tc_%d_tx_bytes", i);
1835 1836
				p += ETH_GSTRING_LEN;
				snprintf(p, ETH_GSTRING_LEN,
1837
					 "veb.tc_%d_rx_packets", i);
1838 1839
				p += ETH_GSTRING_LEN;
				snprintf(p, ETH_GSTRING_LEN,
1840
					 "veb.tc_%d_rx_bytes", i);
1841 1842
				p += ETH_GSTRING_LEN;
			}
J
Jesse Brandeburg 已提交
1843
		}
S
Shannon Nelson 已提交
1844 1845 1846 1847 1848 1849 1850
		for (i = 0; i < I40E_GLOBAL_STATS_LEN; i++) {
			snprintf(p, ETH_GSTRING_LEN, "port.%s",
				 i40e_gstrings_stats[i].stat_string);
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
			snprintf(p, ETH_GSTRING_LEN,
1851
				 "port.tx_priority_%d_xon", i);
S
Shannon Nelson 已提交
1852 1853
			p += ETH_GSTRING_LEN;
			snprintf(p, ETH_GSTRING_LEN,
1854
				 "port.tx_priority_%d_xoff", i);
S
Shannon Nelson 已提交
1855 1856 1857 1858
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
			snprintf(p, ETH_GSTRING_LEN,
1859
				 "port.rx_priority_%d_xon", i);
S
Shannon Nelson 已提交
1860 1861
			p += ETH_GSTRING_LEN;
			snprintf(p, ETH_GSTRING_LEN,
1862
				 "port.rx_priority_%d_xoff", i);
S
Shannon Nelson 已提交
1863 1864 1865 1866
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
			snprintf(p, ETH_GSTRING_LEN,
1867
				 "port.rx_priority_%d_xon_2_xoff", i);
S
Shannon Nelson 已提交
1868 1869
			p += ETH_GSTRING_LEN;
		}
J
Jesse Brandeburg 已提交
1870 1871
		/* BUG_ON(p - data != I40E_STATS_LEN * ETH_GSTRING_LEN); */
		break;
1872
	case ETH_SS_PRIV_FLAGS:
1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884
		for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
			snprintf(p, ETH_GSTRING_LEN, "%s",
				 i40e_gstrings_priv_flags[i].flag_string);
			p += ETH_GSTRING_LEN;
		}
		if (pf->hw.pf_id != 0)
			break;
		for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++) {
			snprintf(p, ETH_GSTRING_LEN, "%s",
				 i40e_gl_gstrings_priv_flags[i].flag_string);
			p += ETH_GSTRING_LEN;
		}
1885
		break;
1886 1887
	default:
		break;
J
Jesse Brandeburg 已提交
1888 1889 1890 1891 1892 1893
	}
}

static int i40e_get_ts_info(struct net_device *dev,
			    struct ethtool_ts_info *info)
{
J
Jacob Keller 已提交
1894 1895
	struct i40e_pf *pf = i40e_netdev_to_pf(dev);

1896 1897 1898 1899
	/* only report HW timestamping if PTP is enabled */
	if (!(pf->flags & I40E_FLAG_PTP))
		return ethtool_op_get_ts_info(dev, info);

J
Jacob Keller 已提交
1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911
	info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
				SOF_TIMESTAMPING_RX_SOFTWARE |
				SOF_TIMESTAMPING_SOFTWARE |
				SOF_TIMESTAMPING_TX_HARDWARE |
				SOF_TIMESTAMPING_RX_HARDWARE |
				SOF_TIMESTAMPING_RAW_HARDWARE;

	if (pf->ptp_clock)
		info->phc_index = ptp_clock_index(pf->ptp_clock);
	else
		info->phc_index = -1;

1912
	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
J
Jacob Keller 已提交
1913

1914
	info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
1915 1916 1917 1918
			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
			   BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);

1919
	if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
1920 1921 1922 1923 1924 1925 1926 1927
		info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
				    BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
				    BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
				    BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
				    BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
				    BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
J
Jacob Keller 已提交
1928 1929

	return 0;
J
Jesse Brandeburg 已提交
1930 1931
}

S
Shannon Nelson 已提交
1932
static int i40e_link_test(struct net_device *netdev, u64 *data)
J
Jesse Brandeburg 已提交
1933
{
S
Shannon Nelson 已提交
1934 1935
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
1936 1937
	i40e_status status;
	bool link_up = false;
S
Shannon Nelson 已提交
1938

S
Shannon Nelson 已提交
1939
	netif_info(pf, hw, netdev, "link test\n");
1940 1941 1942 1943 1944 1945 1946 1947
	status = i40e_get_link_status(&pf->hw, &link_up);
	if (status) {
		netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
		*data = 1;
		return *data;
	}

	if (link_up)
J
Jesse Brandeburg 已提交
1948 1949 1950 1951 1952 1953 1954
		*data = 0;
	else
		*data = 1;

	return *data;
}

S
Shannon Nelson 已提交
1955
static int i40e_reg_test(struct net_device *netdev, u64 *data)
J
Jesse Brandeburg 已提交
1956
{
S
Shannon Nelson 已提交
1957 1958
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
J
Jesse Brandeburg 已提交
1959

S
Shannon Nelson 已提交
1960
	netif_info(pf, hw, netdev, "register test\n");
S
Shannon Nelson 已提交
1961
	*data = i40e_diag_reg_test(&pf->hw);
J
Jesse Brandeburg 已提交
1962

S
Shannon Nelson 已提交
1963
	return *data;
J
Jesse Brandeburg 已提交
1964 1965
}

S
Shannon Nelson 已提交
1966
static int i40e_eeprom_test(struct net_device *netdev, u64 *data)
J
Jesse Brandeburg 已提交
1967
{
S
Shannon Nelson 已提交
1968 1969
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
J
Jesse Brandeburg 已提交
1970

S
Shannon Nelson 已提交
1971
	netif_info(pf, hw, netdev, "eeprom test\n");
S
Shannon Nelson 已提交
1972
	*data = i40e_diag_eeprom_test(&pf->hw);
J
Jesse Brandeburg 已提交
1973

1974 1975 1976
	/* forcebly clear the NVM Update state machine */
	pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;

S
Shannon Nelson 已提交
1977
	return *data;
J
Jesse Brandeburg 已提交
1978 1979
}

S
Shannon Nelson 已提交
1980
static int i40e_intr_test(struct net_device *netdev, u64 *data)
J
Jesse Brandeburg 已提交
1981
{
S
Shannon Nelson 已提交
1982 1983
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
S
Shannon Nelson 已提交
1984 1985
	u16 swc_old = pf->sw_int_count;

S
Shannon Nelson 已提交
1986
	netif_info(pf, hw, netdev, "interrupt test\n");
S
Shannon Nelson 已提交
1987 1988
	wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
	     (I40E_PFINT_DYN_CTL0_INTENA_MASK |
1989 1990 1991 1992
	      I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
	      I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
	      I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
	      I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
S
Shannon Nelson 已提交
1993 1994
	usleep_range(1000, 2000);
	*data = (swc_old == pf->sw_int_count);
J
Jesse Brandeburg 已提交
1995 1996 1997 1998

	return *data;
}

1999 2000 2001 2002 2003 2004
static inline bool i40e_active_vfs(struct i40e_pf *pf)
{
	struct i40e_vf *vfs = pf->vf;
	int i;

	for (i = 0; i < pf->num_alloc_vfs; i++)
2005
		if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
2006 2007 2008 2009
			return true;
	return false;
}

2010 2011
static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
{
2012
	return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
2013 2014
}

J
Jesse Brandeburg 已提交
2015 2016 2017 2018
static void i40e_diag_test(struct net_device *netdev,
			   struct ethtool_test *eth_test, u64 *data)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
G
Greg Rose 已提交
2019
	bool if_running = netif_running(netdev);
J
Jesse Brandeburg 已提交
2020 2021 2022 2023
	struct i40e_pf *pf = np->vsi->back;

	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
		/* Offline tests */
S
Shannon Nelson 已提交
2024
		netif_info(pf, drv, netdev, "offline testing starting\n");
J
Jesse Brandeburg 已提交
2025

2026
		set_bit(__I40E_TESTING, pf->state);
2027

2028
		if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
2029
			dev_warn(&pf->pdev->dev,
2030
				 "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
2031 2032 2033 2034 2035
			data[I40E_ETH_TEST_REG]		= 1;
			data[I40E_ETH_TEST_EEPROM]	= 1;
			data[I40E_ETH_TEST_INTR]	= 1;
			data[I40E_ETH_TEST_LINK]	= 1;
			eth_test->flags |= ETH_TEST_FL_FAILED;
2036
			clear_bit(__I40E_TESTING, pf->state);
2037 2038 2039
			goto skip_ol_tests;
		}

G
Greg Rose 已提交
2040 2041 2042
		/* If the device is online then take it offline */
		if (if_running)
			/* indicate we're in test mode */
2043
			i40e_close(netdev);
G
Greg Rose 已提交
2044
		else
2045 2046 2047 2048 2049
			/* This reset does not affect link - if it is
			 * changed to a type of reset that does affect
			 * link then the following link test would have
			 * to be moved to before the reset
			 */
2050
			i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2051

S
Shannon Nelson 已提交
2052
		if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
J
Jesse Brandeburg 已提交
2053 2054
			eth_test->flags |= ETH_TEST_FL_FAILED;

S
Shannon Nelson 已提交
2055
		if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
J
Jesse Brandeburg 已提交
2056 2057
			eth_test->flags |= ETH_TEST_FL_FAILED;

S
Shannon Nelson 已提交
2058
		if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
J
Jesse Brandeburg 已提交
2059 2060
			eth_test->flags |= ETH_TEST_FL_FAILED;

2061 2062 2063 2064
		/* run reg test last, a reset is required after it */
		if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

2065
		clear_bit(__I40E_TESTING, pf->state);
2066
		i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
G
Greg Rose 已提交
2067 2068

		if (if_running)
2069
			i40e_open(netdev);
J
Jesse Brandeburg 已提交
2070 2071
	} else {
		/* Online tests */
S
Shannon Nelson 已提交
2072 2073
		netif_info(pf, drv, netdev, "online testing starting\n");

S
Shannon Nelson 已提交
2074
		if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
J
Jesse Brandeburg 已提交
2075 2076 2077 2078 2079 2080 2081
			eth_test->flags |= ETH_TEST_FL_FAILED;

		/* Offline only tests, not run in online; pass by default */
		data[I40E_ETH_TEST_REG] = 0;
		data[I40E_ETH_TEST_EEPROM] = 0;
		data[I40E_ETH_TEST_INTR] = 0;
	}
2082

2083 2084
skip_ol_tests:

S
Shannon Nelson 已提交
2085
	netif_info(pf, drv, netdev, "testing finished\n");
J
Jesse Brandeburg 已提交
2086 2087 2088 2089 2090
}

static void i40e_get_wol(struct net_device *netdev,
			 struct ethtool_wolinfo *wol)
{
S
Shannon Nelson 已提交
2091 2092 2093 2094 2095 2096 2097
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 wol_nvm_bits;

	/* NVM bit on means WoL disabled for the port */
	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2098
	if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
S
Shannon Nelson 已提交
2099 2100 2101 2102 2103 2104 2105 2106
		wol->supported = 0;
		wol->wolopts = 0;
	} else {
		wol->supported = WAKE_MAGIC;
		wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
	}
}

2107 2108 2109 2110 2111
/**
 * i40e_set_wol - set the WakeOnLAN configuration
 * @netdev: the netdev in question
 * @wol: the ethtool WoL setting data
 **/
S
Shannon Nelson 已提交
2112 2113 2114 2115
static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
2116
	struct i40e_vsi *vsi = np->vsi;
S
Shannon Nelson 已提交
2117 2118 2119
	struct i40e_hw *hw = &pf->hw;
	u16 wol_nvm_bits;

2120 2121 2122 2123 2124 2125 2126 2127 2128
	/* WoL not supported if this isn't the controlling PF on the port */
	if (hw->partition_id != 1) {
		i40e_partition_setting_complaint(pf);
		return -EOPNOTSUPP;
	}

	if (vsi != pf->vsi[pf->lan_vsi])
		return -EOPNOTSUPP;

S
Shannon Nelson 已提交
2129 2130
	/* NVM bit on means WoL disabled for the port */
	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2131
	if (BIT(hw->port) & wol_nvm_bits)
S
Shannon Nelson 已提交
2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143
		return -EOPNOTSUPP;

	/* only magic packet is supported */
	if (wol->wolopts && (wol->wolopts != WAKE_MAGIC))
		return -EOPNOTSUPP;

	/* is this a new value? */
	if (pf->wol_en != !!wol->wolopts) {
		pf->wol_en = !!wol->wolopts;
		device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
	}

J
Jesse Brandeburg 已提交
2144 2145 2146 2147 2148 2149 2150
	return 0;
}

static int i40e_set_phys_id(struct net_device *netdev,
			    enum ethtool_phys_id_state state)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
2151
	i40e_status ret = 0;
J
Jesse Brandeburg 已提交
2152 2153 2154
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int blink_freq = 2;
2155
	u16 temp_status;
J
Jesse Brandeburg 已提交
2156 2157 2158

	switch (state) {
	case ETHTOOL_ID_ACTIVE:
2159
		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2160 2161
			pf->led_status = i40e_led_get(hw);
		} else {
2162 2163 2164
			if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
				i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
						      NULL);
2165 2166 2167 2168
			ret = i40e_led_get_phy(hw, &temp_status,
					       &pf->phy_led_val);
			pf->led_status = temp_status;
		}
J
Jesse Brandeburg 已提交
2169 2170
		return blink_freq;
	case ETHTOOL_ID_ON:
2171
		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2172 2173 2174
			i40e_led_set(hw, 0xf, false);
		else
			ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
J
Jesse Brandeburg 已提交
2175 2176
		break;
	case ETHTOOL_ID_OFF:
2177
		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2178 2179 2180
			i40e_led_set(hw, 0x0, false);
		else
			ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
J
Jesse Brandeburg 已提交
2181 2182
		break;
	case ETHTOOL_ID_INACTIVE:
2183
		if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
H
Henry Tieman 已提交
2184
			i40e_led_set(hw, pf->led_status, false);
2185 2186 2187 2188
		} else {
			ret = i40e_led_set_phy(hw, false, pf->led_status,
					       (pf->phy_led_val |
					       I40E_PHY_LED_MODE_ORIG));
2189 2190
			if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
				i40e_aq_set_phy_debug(hw, 0, NULL);
2191
		}
J
Jesse Brandeburg 已提交
2192
		break;
2193 2194
	default:
		break;
J
Jesse Brandeburg 已提交
2195
	}
2196 2197 2198 2199
		if (ret)
			return -ENOENT;
		else
			return 0;
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Jesse Brandeburg 已提交
2200 2201 2202 2203 2204 2205 2206
}

/* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
 * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
 * 125us (8000 interrupts per second) == ITR(62)
 */

2207 2208 2209 2210 2211 2212 2213 2214 2215 2216
/**
 * __i40e_get_coalesce - get per-queue coalesce settings
 * @netdev: the netdev to check
 * @ec: ethtool coalesce data structure
 * @queue: which queue to pick
 *
 * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
 * are per queue. If queue is <0 then we default to queue 0 as the
 * representative value.
 **/
2217 2218 2219
static int __i40e_get_coalesce(struct net_device *netdev,
			       struct ethtool_coalesce *ec,
			       int queue)
J
Jesse Brandeburg 已提交
2220 2221
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
2222
	struct i40e_ring *rx_ring, *tx_ring;
J
Jesse Brandeburg 已提交
2223 2224 2225 2226 2227
	struct i40e_vsi *vsi = np->vsi;

	ec->tx_max_coalesced_frames_irq = vsi->work_limit;
	ec->rx_max_coalesced_frames_irq = vsi->work_limit;

2228 2229
	/* rx and tx usecs has per queue value. If user doesn't specify the
	 * queue, return queue 0's value to represent.
2230
	 */
2231
	if (queue < 0)
2232
		queue = 0;
2233
	else if (queue >= vsi->num_queue_pairs)
2234 2235
		return -EINVAL;

2236 2237 2238
	rx_ring = vsi->rx_rings[queue];
	tx_ring = vsi->tx_rings[queue];

2239
	if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
2240
		ec->use_adaptive_rx_coalesce = 1;
J
Jesse Brandeburg 已提交
2241

2242
	if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
2243 2244
		ec->use_adaptive_tx_coalesce = 1;

2245 2246
	ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
	ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2247

2248 2249 2250 2251 2252 2253 2254 2255
	/* we use the _usecs_high to store/set the interrupt rate limit
	 * that the hardware supports, that almost but not quite
	 * fits the original intent of the ethtool variable,
	 * the rx_coalesce_usecs_high limits total interrupts
	 * per second from both tx/rx sources.
	 */
	ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
	ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
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Jesse Brandeburg 已提交
2256 2257 2258 2259

	return 0;
}

2260 2261 2262 2263 2264 2265 2266 2267 2268
/**
 * i40e_get_coalesce - get a netdev's coalesce settings
 * @netdev: the netdev to check
 * @ec: ethtool coalesce data structure
 *
 * Gets the coalesce settings for a particular netdev. Note that if user has
 * modified per-queue settings, this only guarantees to represent queue 0. See
 * __i40e_get_coalesce for more details.
 **/
2269
static int i40e_get_coalesce(struct net_device *netdev,
J
Jesse Brandeburg 已提交
2270 2271
			     struct ethtool_coalesce *ec)
{
2272 2273 2274
	return __i40e_get_coalesce(netdev, ec, -1);
}

2275 2276 2277 2278 2279 2280 2281 2282
/**
 * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
 * @netdev: netdev structure
 * @ec: ethtool's coalesce settings
 * @queue: the particular queue to read
 *
 * Will read a specific queue's coalesce settings
 **/
2283 2284 2285 2286 2287 2288
static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
				       struct ethtool_coalesce *ec)
{
	return __i40e_get_coalesce(netdev, ec, queue);
}

2289 2290 2291 2292 2293 2294 2295 2296
/**
 * i40e_set_itr_per_queue - set ITR values for specific queue
 * @vsi: the VSI to set values for
 * @ec: coalesce settings from ethtool
 * @queue: the queue to modify
 *
 * Change the ITR settings for a specific queue.
 **/
2297 2298 2299 2300
static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
				   struct ethtool_coalesce *ec,
				   int queue)
{
2301 2302
	struct i40e_ring *rx_ring = vsi->rx_rings[queue];
	struct i40e_ring *tx_ring = vsi->tx_rings[queue];
2303 2304
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
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Jesse Brandeburg 已提交
2305
	struct i40e_q_vector *q_vector;
2306
	u16 intrl;
2307

2308
	intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
2309

2310 2311
	rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
	tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
2312 2313

	if (ec->use_adaptive_rx_coalesce)
2314
		rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2315
	else
2316
		rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2317 2318

	if (ec->use_adaptive_tx_coalesce)
2319
		tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2320
	else
2321
		tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2322

2323
	q_vector = rx_ring->q_vector;
2324
	q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
2325

2326
	q_vector = tx_ring->q_vector;
2327 2328 2329 2330 2331 2332
	q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);

	/* The interrupt handler itself will take care of programming
	 * the Tx and Rx ITR values based on the values we have entered
	 * into the q_vector, no need to write the values now.
	 */
2333

2334
	wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
2335 2336 2337
	i40e_flush(hw);
}

2338 2339 2340 2341 2342 2343 2344 2345
/**
 * __i40e_set_coalesce - set coalesce settings for particular queue
 * @netdev: the netdev to change
 * @ec: ethtool coalesce settings
 * @queue: the queue to change
 *
 * Sets the coalesce settings for a particular queue.
 **/
2346 2347 2348 2349 2350
static int __i40e_set_coalesce(struct net_device *netdev,
			       struct ethtool_coalesce *ec,
			       int queue)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
2351
	u16 intrl_reg, cur_rx_itr, cur_tx_itr;
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Jesse Brandeburg 已提交
2352 2353 2354 2355 2356 2357 2358
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int i;

	if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
		vsi->work_limit = ec->tx_max_coalesced_frames_irq;

2359
	if (queue < 0) {
2360 2361
		cur_rx_itr = vsi->rx_rings[0]->itr_setting;
		cur_tx_itr = vsi->tx_rings[0]->itr_setting;
2362
	} else if (queue < vsi->num_queue_pairs) {
2363 2364
		cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
		cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
2365 2366 2367 2368 2369 2370 2371 2372 2373
	} else {
		netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
			   vsi->num_queue_pairs - 1);
		return -EINVAL;
	}

	cur_tx_itr &= ~I40E_ITR_DYNAMIC;
	cur_rx_itr &= ~I40E_ITR_DYNAMIC;

2374 2375 2376 2377 2378 2379
	/* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
	if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
		netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
		return -EINVAL;
	}

2380 2381 2382
	if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
		netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
			   INTRL_REG_TO_USEC(I40E_MAX_INTRL));
2383 2384 2385
		return -EINVAL;
	}

2386 2387 2388 2389
	if (ec->rx_coalesce_usecs != cur_rx_itr &&
	    ec->use_adaptive_rx_coalesce) {
		netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
		return -EINVAL;
2390
	}
J
Jesse Brandeburg 已提交
2391

2392
	if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
2393 2394 2395 2396 2397 2398 2399 2400 2401 2402
		netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
		return -EINVAL;
	}

	if (ec->tx_coalesce_usecs != cur_tx_itr &&
	    ec->use_adaptive_tx_coalesce) {
		netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
		return -EINVAL;
	}

2403
	if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
2404 2405 2406 2407 2408
		netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
		return -EINVAL;
	}

	if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
2409
		ec->rx_coalesce_usecs = I40E_MIN_ITR;
2410 2411

	if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
2412
		ec->tx_coalesce_usecs = I40E_MIN_ITR;
2413

2414 2415 2416 2417 2418 2419
	intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
	vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
	if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
		netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
			   vsi->int_rate_limit);
	}
2420

2421 2422
	/* rx and tx usecs has per queue value. If user doesn't specify the
	 * queue, apply to all queues.
2423 2424 2425 2426 2427
	 */
	if (queue < 0) {
		for (i = 0; i < vsi->num_queue_pairs; i++)
			i40e_set_itr_per_queue(vsi, ec, i);
	} else {
2428
		i40e_set_itr_per_queue(vsi, ec, queue);
J
Jesse Brandeburg 已提交
2429 2430 2431 2432 2433
	}

	return 0;
}

2434 2435 2436 2437 2438 2439 2440
/**
 * i40e_set_coalesce - set coalesce settings for every queue on the netdev
 * @netdev: the netdev to change
 * @ec: ethtool coalesce settings
 *
 * This will set each queue to the same coalesce settings.
 **/
2441 2442 2443 2444 2445 2446
static int i40e_set_coalesce(struct net_device *netdev,
			     struct ethtool_coalesce *ec)
{
	return __i40e_set_coalesce(netdev, ec, -1);
}

2447 2448 2449 2450 2451 2452 2453 2454
/**
 * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
 * @netdev: the netdev to change
 * @ec: ethtool's coalesce settings
 * @queue: the queue to change
 *
 * Sets the specified queue's coalesce settings.
 **/
2455 2456 2457 2458 2459 2460
static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
				       struct ethtool_coalesce *ec)
{
	return __i40e_set_coalesce(netdev, ec, queue);
}

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Jesse Brandeburg 已提交
2461 2462 2463 2464 2465 2466 2467 2468 2469
/**
 * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
 * @pf: pointer to the physical function struct
 * @cmd: ethtool rxnfc command
 *
 * Returns Success if the flow is supported, else Invalid Input.
 **/
static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
{
2470 2471 2472 2473
	struct i40e_hw *hw = &pf->hw;
	u8 flow_pctype = 0;
	u64 i_set = 0;

J
Jesse Brandeburg 已提交
2474 2475 2476 2477
	cmd->data = 0;

	switch (cmd->flow_type) {
	case TCP_V4_FLOW:
2478 2479
		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
		break;
J
Jesse Brandeburg 已提交
2480
	case UDP_V4_FLOW:
2481 2482 2483 2484 2485 2486 2487 2488
		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
		break;
	case TCP_V6_FLOW:
		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
		break;
	case UDP_V6_FLOW:
		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
		break;
J
Jesse Brandeburg 已提交
2489 2490 2491 2492 2493 2494 2495 2496 2497 2498
	case SCTP_V4_FLOW:
	case AH_ESP_V4_FLOW:
	case AH_V4_FLOW:
	case ESP_V4_FLOW:
	case IPV4_FLOW:
	case SCTP_V6_FLOW:
	case AH_ESP_V6_FLOW:
	case AH_V6_FLOW:
	case ESP_V6_FLOW:
	case IPV6_FLOW:
2499
		/* Default is src/dest for IP, no matter the L4 hashing */
J
Jesse Brandeburg 已提交
2500 2501 2502 2503 2504 2505
		cmd->data |= RXH_IP_SRC | RXH_IP_DST;
		break;
	default:
		return -EINVAL;
	}

2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535
	/* Read flow based hash input set register */
	if (flow_pctype) {
		i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
					      flow_pctype)) |
			((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
					       flow_pctype)) << 32);
	}

	/* Process bits of hash input set */
	if (i_set) {
		if (i_set & I40E_L4_SRC_MASK)
			cmd->data |= RXH_L4_B_0_1;
		if (i_set & I40E_L4_DST_MASK)
			cmd->data |= RXH_L4_B_2_3;

		if (cmd->flow_type == TCP_V4_FLOW ||
		    cmd->flow_type == UDP_V4_FLOW) {
			if (i_set & I40E_L3_SRC_MASK)
				cmd->data |= RXH_IP_SRC;
			if (i_set & I40E_L3_DST_MASK)
				cmd->data |= RXH_IP_DST;
		} else if (cmd->flow_type == TCP_V6_FLOW ||
			  cmd->flow_type == UDP_V6_FLOW) {
			if (i_set & I40E_L3_V6_SRC_MASK)
				cmd->data |= RXH_IP_SRC;
			if (i_set & I40E_L3_V6_DST_MASK)
				cmd->data |= RXH_IP_DST;
		}
	}

J
Jesse Brandeburg 已提交
2536 2537 2538
	return 0;
}

2539 2540 2541
/**
 * i40e_check_mask - Check whether a mask field is set
 * @mask: the full mask value
2542
 * @field: mask of the field to check
2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612
 *
 * If the given mask is fully set, return positive value. If the mask for the
 * field is fully unset, return zero. Otherwise return a negative error code.
 **/
static int i40e_check_mask(u64 mask, u64 field)
{
	u64 value = mask & field;

	if (value == field)
		return 1;
	else if (!value)
		return 0;
	else
		return -1;
}

/**
 * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
 * @fsp: pointer to rx flow specification
 * @data: pointer to userdef data structure for storage
 *
 * Read the user-defined data and deconstruct the value into a structure. No
 * other code should read the user-defined data, so as to ensure that every
 * place consistently reads the value correctly.
 *
 * The user-defined field is a 64bit Big Endian format value, which we
 * deconstruct by reading bits or bit fields from it. Single bit flags shall
 * be defined starting from the highest bits, while small bit field values
 * shall be defined starting from the lowest bits.
 *
 * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
 * and the filter should be rejected. The data structure will always be
 * modified even if FLOW_EXT is not set.
 *
 **/
static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
					struct i40e_rx_flow_userdef *data)
{
	u64 value, mask;
	int valid;

	/* Zero memory first so it's always consistent. */
	memset(data, 0, sizeof(*data));

	if (!(fsp->flow_type & FLOW_EXT))
		return 0;

	value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
	mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));

#define I40E_USERDEF_FLEX_WORD		GENMASK_ULL(15, 0)
#define I40E_USERDEF_FLEX_OFFSET	GENMASK_ULL(31, 16)
#define I40E_USERDEF_FLEX_FILTER	GENMASK_ULL(31, 0)

	valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
	if (valid < 0) {
		return -EINVAL;
	} else if (valid) {
		data->flex_word = value & I40E_USERDEF_FLEX_WORD;
		data->flex_offset =
			(value & I40E_USERDEF_FLEX_OFFSET) >> 16;
		data->flex_filter = true;
	}

	return 0;
}

/**
 * i40e_fill_rx_flow_user_data - Fill in user-defined data field
 * @fsp: pointer to rx_flow specification
2613
 * @data: pointer to return userdef data
2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635
 *
 * Reads the userdef data structure and properly fills in the user defined
 * fields of the rx_flow_spec.
 **/
static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
					struct i40e_rx_flow_userdef *data)
{
	u64 value = 0, mask = 0;

	if (data->flex_filter) {
		value |= data->flex_word;
		value |= (u64)data->flex_offset << 16;
		mask |= I40E_USERDEF_FLEX_FILTER;
	}

	if (value || mask)
		fsp->flow_type |= FLOW_EXT;

	*((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
	*((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
}

2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655
/**
 * i40e_get_ethtool_fdir_all - Populates the rule count of a command
 * @pf: Pointer to the physical function struct
 * @cmd: The command to get or set Rx flow classification rules
 * @rule_locs: Array of used rule locations
 *
 * This function populates both the total and actual rule count of
 * the ethtool flow classification command
 *
 * Returns 0 on success or -EMSGSIZE if entry not found
 **/
static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
				     struct ethtool_rxnfc *cmd,
				     u32 *rule_locs)
{
	struct i40e_fdir_filter *rule;
	struct hlist_node *node2;
	int cnt = 0;

	/* report total rule count */
2656
	cmd->data = i40e_get_fd_cnt_all(pf);
2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686

	hlist_for_each_entry_safe(rule, node2,
				  &pf->fdir_filter_list, fdir_node) {
		if (cnt == cmd->rule_cnt)
			return -EMSGSIZE;

		rule_locs[cnt] = rule->fd_id;
		cnt++;
	}

	cmd->rule_cnt = cnt;

	return 0;
}

/**
 * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
 * @pf: Pointer to the physical function struct
 * @cmd: The command to get or set Rx flow classification rules
 *
 * This function looks up a filter based on the Rx flow classification
 * command and fills the flow spec info for it if found
 *
 * Returns 0 on success or -EINVAL if filter not found
 **/
static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
				       struct ethtool_rxnfc *cmd)
{
	struct ethtool_rx_flow_spec *fsp =
			(struct ethtool_rx_flow_spec *)&cmd->fs;
2687
	struct i40e_rx_flow_userdef userdef = {0};
2688 2689
	struct i40e_fdir_filter *rule = NULL;
	struct hlist_node *node2;
2690 2691
	u64 input_set;
	u16 index;
2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702

	hlist_for_each_entry_safe(rule, node2,
				  &pf->fdir_filter_list, fdir_node) {
		if (fsp->location <= rule->fd_id)
			break;
	}

	if (!rule || fsp->location != rule->fd_id)
		return -EINVAL;

	fsp->flow_type = rule->flow_type;
2703 2704 2705 2706 2707 2708
	if (fsp->flow_type == IP_USER_FLOW) {
		fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
		fsp->h_u.usr_ip4_spec.proto = 0;
		fsp->m_u.usr_ip4_spec.proto = 0;
	}

2709 2710 2711 2712 2713
	/* Reverse the src and dest notion, since the HW views them from
	 * Tx perspective where as the user expects it from Rx filter view.
	 */
	fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
	fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
2714 2715
	fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
	fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
2716

2717
	switch (rule->flow_type) {
2718 2719 2720
	case SCTP_V4_FLOW:
		index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
		break;
2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745
	case TCP_V4_FLOW:
		index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
		break;
	case UDP_V4_FLOW:
		index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
		break;
	case IP_USER_FLOW:
		index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
		break;
	default:
		/* If we have stored a filter with a flow type not listed here
		 * it is almost certainly a driver bug. WARN(), and then
		 * assign the input_set as if all fields are enabled to avoid
		 * reading unassigned memory.
		 */
		WARN(1, "Missing input set index for flow_type %d\n",
		     rule->flow_type);
		input_set = 0xFFFFFFFFFFFFFFFFULL;
		goto no_input_set;
	}

	input_set = i40e_read_fd_input_set(pf, index);

no_input_set:
	if (input_set & I40E_L3_SRC_MASK)
2746
		fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
2747 2748

	if (input_set & I40E_L3_DST_MASK)
2749
		fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
2750 2751

	if (input_set & I40E_L4_SRC_MASK)
2752
		fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
2753 2754

	if (input_set & I40E_L4_DST_MASK)
2755
		fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
2756

2757 2758 2759 2760
	if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
		fsp->ring_cookie = RX_CLS_FLOW_DISC;
	else
		fsp->ring_cookie = rule->q_index;
2761

2762 2763 2764 2765 2766
	if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
		struct i40e_vsi *vsi;

		vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
		if (vsi && vsi->type == I40E_VSI_SRIOV) {
2767 2768 2769 2770 2771 2772 2773
			/* VFs are zero-indexed by the driver, but ethtool
			 * expects them to be one-indexed, so add one here
			 */
			u64 ring_vf = vsi->vf_id + 1;

			ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
			fsp->ring_cookie |= ring_vf;
2774 2775 2776
		}
	}

2777 2778 2779 2780 2781 2782
	if (rule->flex_filter) {
		userdef.flex_filter = true;
		userdef.flex_word = be16_to_cpu(rule->flex_word);
		userdef.flex_offset = rule->flex_offset;
	}

2783 2784
	i40e_fill_rx_flow_user_data(fsp, &userdef);

2785 2786 2787
	return 0;
}

J
Jesse Brandeburg 已提交
2788 2789 2790 2791
/**
 * i40e_get_rxnfc - command to get RX flow classification rules
 * @netdev: network interface device structure
 * @cmd: ethtool rxnfc command
2792
 * @rule_locs: pointer to store rule data
J
Jesse Brandeburg 已提交
2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805
 *
 * Returns Success if the command is supported.
 **/
static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
			  u32 *rule_locs)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int ret = -EOPNOTSUPP;

	switch (cmd->cmd) {
	case ETHTOOL_GRXRINGS:
2806
		cmd->data = vsi->rss_size;
J
Jesse Brandeburg 已提交
2807 2808 2809 2810 2811 2812
		ret = 0;
		break;
	case ETHTOOL_GRXFH:
		ret = i40e_get_rss_hash_opts(pf, cmd);
		break;
	case ETHTOOL_GRXCLSRLCNT:
2813
		cmd->rule_cnt = pf->fdir_pf_active_filters;
2814 2815
		/* report total rule count */
		cmd->data = i40e_get_fd_cnt_all(pf);
J
Jesse Brandeburg 已提交
2816 2817 2818
		ret = 0;
		break;
	case ETHTOOL_GRXCLSRULE:
2819
		ret = i40e_get_ethtool_fdir_entry(pf, cmd);
J
Jesse Brandeburg 已提交
2820 2821
		break;
	case ETHTOOL_GRXCLSRLALL:
2822 2823
		ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
		break;
J
Jesse Brandeburg 已提交
2824 2825 2826 2827 2828 2829 2830
	default:
		break;
	}

	return ret;
}

2831 2832 2833
/**
 * i40e_get_rss_hash_bits - Read RSS Hash bits from register
 * @nfc: pointer to user request
2834
 * @i_setc: bits currently set
2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875
 *
 * Returns value of bits to be set per user request
 **/
static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
{
	u64 i_set = i_setc;
	u64 src_l3 = 0, dst_l3 = 0;

	if (nfc->data & RXH_L4_B_0_1)
		i_set |= I40E_L4_SRC_MASK;
	else
		i_set &= ~I40E_L4_SRC_MASK;
	if (nfc->data & RXH_L4_B_2_3)
		i_set |= I40E_L4_DST_MASK;
	else
		i_set &= ~I40E_L4_DST_MASK;

	if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
		src_l3 = I40E_L3_V6_SRC_MASK;
		dst_l3 = I40E_L3_V6_DST_MASK;
	} else if (nfc->flow_type == TCP_V4_FLOW ||
		  nfc->flow_type == UDP_V4_FLOW) {
		src_l3 = I40E_L3_SRC_MASK;
		dst_l3 = I40E_L3_DST_MASK;
	} else {
		/* Any other flow type are not supported here */
		return i_set;
	}

	if (nfc->data & RXH_IP_SRC)
		i_set |= src_l3;
	else
		i_set &= ~src_l3;
	if (nfc->data & RXH_IP_DST)
		i_set |= dst_l3;
	else
		i_set &= ~dst_l3;

	return i_set;
}

J
Jesse Brandeburg 已提交
2876 2877 2878
/**
 * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
 * @pf: pointer to the physical function struct
2879
 * @nfc: ethtool rxnfc command
J
Jesse Brandeburg 已提交
2880 2881 2882 2883 2884 2885
 *
 * Returns Success if the flow input set is supported.
 **/
static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
{
	struct i40e_hw *hw = &pf->hw;
2886 2887
	u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
		   ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
2888 2889
	u8 flow_pctype = 0;
	u64 i_set, i_setc;
J
Jesse Brandeburg 已提交
2890

2891 2892 2893 2894 2895 2896
	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
		dev_err(&pf->pdev->dev,
			"Change of RSS hash input set is not supported when MFP mode is enabled\n");
		return -EOPNOTSUPP;
	}

J
Jesse Brandeburg 已提交
2897 2898 2899 2900 2901 2902 2903 2904 2905
	/* RSS does not support anything other than hashing
	 * to queues on src and dst IPs and ports
	 */
	if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
			  RXH_L4_B_0_1 | RXH_L4_B_2_3))
		return -EINVAL;

	switch (nfc->flow_type) {
	case TCP_V4_FLOW:
2906
		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
2907
		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2908 2909
			hena |=
			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
J
Jesse Brandeburg 已提交
2910 2911
		break;
	case TCP_V6_FLOW:
2912
		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
2913
		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2914 2915
			hena |=
			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
2916
		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2917 2918
			hena |=
			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
J
Jesse Brandeburg 已提交
2919 2920
		break;
	case UDP_V4_FLOW:
2921
		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
2922
		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2923 2924 2925 2926 2927
			hena |=
			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);

		hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
J
Jesse Brandeburg 已提交
2928 2929
		break;
	case UDP_V6_FLOW:
2930
		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
2931
		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
2932 2933 2934 2935 2936
			hena |=
			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);

		hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
J
Jesse Brandeburg 已提交
2937 2938 2939 2940 2941 2942 2943 2944
		break;
	case AH_ESP_V4_FLOW:
	case AH_V4_FLOW:
	case ESP_V4_FLOW:
	case SCTP_V4_FLOW:
		if ((nfc->data & RXH_L4_B_0_1) ||
		    (nfc->data & RXH_L4_B_2_3))
			return -EINVAL;
2945
		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
J
Jesse Brandeburg 已提交
2946 2947 2948 2949 2950 2951 2952 2953
		break;
	case AH_ESP_V6_FLOW:
	case AH_V6_FLOW:
	case ESP_V6_FLOW:
	case SCTP_V6_FLOW:
		if ((nfc->data & RXH_L4_B_0_1) ||
		    (nfc->data & RXH_L4_B_2_3))
			return -EINVAL;
2954
		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
J
Jesse Brandeburg 已提交
2955 2956
		break;
	case IPV4_FLOW:
2957 2958
		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
			BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
J
Jesse Brandeburg 已提交
2959 2960
		break;
	case IPV6_FLOW:
2961 2962
		hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
			BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
J
Jesse Brandeburg 已提交
2963 2964 2965 2966 2967
		break;
	default:
		return -EINVAL;
	}

2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980
	if (flow_pctype) {
		i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
					       flow_pctype)) |
			((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
					       flow_pctype)) << 32);
		i_set = i40e_get_rss_hash_bits(nfc, i_setc);
		i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
				  (u32)i_set);
		i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),
				  (u32)(i_set >> 32));
		hena |= BIT_ULL(flow_pctype);
	}

2981 2982
	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
J
Jesse Brandeburg 已提交
2983 2984 2985 2986 2987 2988
	i40e_flush(hw);

	return 0;
}

/**
2989 2990 2991 2992 2993
 * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
 * @vsi: Pointer to the targeted VSI
 * @input: The filter to update or NULL to indicate deletion
 * @sw_idx: Software index to the filter
 * @cmd: The command to get or set Rx flow classification rules
J
Jesse Brandeburg 已提交
2994
 *
2995 2996 2997 2998
 * This function updates (or deletes) a Flow Director entry from
 * the hlist of the corresponding PF
 *
 * Returns 0 on success
J
Jesse Brandeburg 已提交
2999
 **/
3000 3001 3002 3003
static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
					  struct i40e_fdir_filter *input,
					  u16 sw_idx,
					  struct ethtool_rxnfc *cmd)
J
Jesse Brandeburg 已提交
3004
{
3005
	struct i40e_fdir_filter *rule, *parent;
J
Jesse Brandeburg 已提交
3006
	struct i40e_pf *pf = vsi->back;
3007 3008
	struct hlist_node *node2;
	int err = -EINVAL;
J
Jesse Brandeburg 已提交
3009

3010 3011
	parent = NULL;
	rule = NULL;
J
Jesse Brandeburg 已提交
3012

3013 3014 3015 3016 3017 3018
	hlist_for_each_entry_safe(rule, node2,
				  &pf->fdir_filter_list, fdir_node) {
		/* hash found, or no matching entry */
		if (rule->fd_id >= sw_idx)
			break;
		parent = rule;
J
Jesse Brandeburg 已提交
3019 3020
	}

3021 3022
	/* if there is an old rule occupying our place remove it */
	if (rule && (rule->fd_id == sw_idx)) {
3023 3024 3025 3026
		/* Remove this rule, since we're either deleting it, or
		 * replacing it.
		 */
		err = i40e_add_del_fdir(vsi, rule, false);
3027 3028 3029
		hlist_del(&rule->fdir_node);
		kfree(rule);
		pf->fdir_pf_active_filters--;
3030 3031
	}

3032 3033
	/* If we weren't given an input, this is a delete, so just return the
	 * error code indicating if there was an entry at the requested slot
3034 3035 3036
	 */
	if (!input)
		return err;
J
Jesse Brandeburg 已提交
3037

3038
	/* Otherwise, install the new rule as requested */
3039
	INIT_HLIST_NODE(&input->fdir_node);
J
Jesse Brandeburg 已提交
3040

3041 3042
	/* add filter to the list */
	if (parent)
3043
		hlist_add_behind(&input->fdir_node, &parent->fdir_node);
3044 3045 3046
	else
		hlist_add_head(&input->fdir_node,
			       &pf->fdir_filter_list);
J
Jesse Brandeburg 已提交
3047

3048 3049
	/* update counts */
	pf->fdir_pf_active_filters++;
J
Jesse Brandeburg 已提交
3050

3051
	return 0;
J
Jesse Brandeburg 已提交
3052 3053
}

3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116
/**
 * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
 * @pf: pointer to PF structure
 *
 * This function searches the list of filters and determines which FLX_PIT
 * entries are still required. It will prune any entries which are no longer
 * in use after the deletion.
 **/
static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
{
	struct i40e_flex_pit *entry, *tmp;
	struct i40e_fdir_filter *rule;

	/* First, we'll check the l3 table */
	list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
		bool found = false;

		hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
			if (rule->flow_type != IP_USER_FLOW)
				continue;
			if (rule->flex_filter &&
			    rule->flex_offset == entry->src_offset) {
				found = true;
				break;
			}
		}

		/* If we didn't find the filter, then we can prune this entry
		 * from the list.
		 */
		if (!found) {
			list_del(&entry->list);
			kfree(entry);
		}
	}

	/* Followed by the L4 table */
	list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
		bool found = false;

		hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
			/* Skip this filter if it's L3, since we already
			 * checked those in the above loop
			 */
			if (rule->flow_type == IP_USER_FLOW)
				continue;
			if (rule->flex_filter &&
			    rule->flex_offset == entry->src_offset) {
				found = true;
				break;
			}
		}

		/* If we didn't find the filter, then we can prune this entry
		 * from the list.
		 */
		if (!found) {
			list_del(&entry->list);
			kfree(entry);
		}
	}
}

J
Jesse Brandeburg 已提交
3117
/**
3118 3119 3120
 * i40e_del_fdir_entry - Deletes a Flow Director filter entry
 * @vsi: Pointer to the targeted VSI
 * @cmd: The command to get or set Rx flow classification rules
J
Jesse Brandeburg 已提交
3121
 *
3122 3123
 * The function removes a Flow Director filter entry from the
 * hlist of the corresponding PF
J
Jesse Brandeburg 已提交
3124
 *
3125 3126 3127 3128
 * Returns 0 on success
 */
static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
			       struct ethtool_rxnfc *cmd)
J
Jesse Brandeburg 已提交
3129
{
3130 3131
	struct ethtool_rx_flow_spec *fsp =
		(struct ethtool_rx_flow_spec *)&cmd->fs;
J
Jesse Brandeburg 已提交
3132
	struct i40e_pf *pf = vsi->back;
3133
	int ret = 0;
J
Jesse Brandeburg 已提交
3134

3135 3136
	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
	    test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3137 3138
		return -EBUSY;

3139
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3140 3141
		return -EBUSY;

3142
	ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
J
Jesse Brandeburg 已提交
3143

3144 3145
	i40e_prune_flex_pit_list(pf);

3146
	i40e_fdir_check_and_reenable(pf);
3147
	return ret;
J
Jesse Brandeburg 已提交
3148 3149
}

3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277
/**
 * i40e_unused_pit_index - Find an unused PIT index for given list
 * @pf: the PF data structure
 *
 * Find the first unused flexible PIT index entry. We search both the L3 and
 * L4 flexible PIT lists so that the returned index is unique and unused by
 * either currently programmed L3 or L4 filters. We use a bit field as storage
 * to track which indexes are already used.
 **/
static u8 i40e_unused_pit_index(struct i40e_pf *pf)
{
	unsigned long available_index = 0xFF;
	struct i40e_flex_pit *entry;

	/* We need to make sure that the new index isn't in use by either L3
	 * or L4 filters so that IP_USER_FLOW filters can program both L3 and
	 * L4 to use the same index.
	 */

	list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
		clear_bit(entry->pit_index, &available_index);

	list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
		clear_bit(entry->pit_index, &available_index);

	return find_first_bit(&available_index, 8);
}

/**
 * i40e_find_flex_offset - Find an existing flex src_offset
 * @flex_pit_list: L3 or L4 flex PIT list
 * @src_offset: new src_offset to find
 *
 * Searches the flex_pit_list for an existing offset. If no offset is
 * currently programmed, then this will return an ERR_PTR if there is no space
 * to add a new offset, otherwise it returns NULL.
 **/
static
struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
					    u16 src_offset)
{
	struct i40e_flex_pit *entry;
	int size = 0;

	/* Search for the src_offset first. If we find a matching entry
	 * already programmed, we can simply re-use it.
	 */
	list_for_each_entry(entry, flex_pit_list, list) {
		size++;
		if (entry->src_offset == src_offset)
			return entry;
	}

	/* If we haven't found an entry yet, then the provided src offset has
	 * not yet been programmed. We will program the src offset later on,
	 * but we need to indicate whether there is enough space to do so
	 * here. We'll make use of ERR_PTR for this purpose.
	 */
	if (size >= I40E_FLEX_PIT_TABLE_SIZE)
		return ERR_PTR(-ENOSPC);

	return NULL;
}

/**
 * i40e_add_flex_offset - Add src_offset to flex PIT table list
 * @flex_pit_list: L3 or L4 flex PIT list
 * @src_offset: new src_offset to add
 * @pit_index: the PIT index to program
 *
 * This function programs the new src_offset to the list. It is expected that
 * i40e_find_flex_offset has already been tried and returned NULL, indicating
 * that this offset is not programmed, and that the list has enough space to
 * store another offset.
 *
 * Returns 0 on success, and negative value on error.
 **/
static int i40e_add_flex_offset(struct list_head *flex_pit_list,
				u16 src_offset,
				u8 pit_index)
{
	struct i40e_flex_pit *new_pit, *entry;

	new_pit = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!new_pit)
		return -ENOMEM;

	new_pit->src_offset = src_offset;
	new_pit->pit_index = pit_index;

	/* We need to insert this item such that the list is sorted by
	 * src_offset in ascending order.
	 */
	list_for_each_entry(entry, flex_pit_list, list) {
		if (new_pit->src_offset < entry->src_offset) {
			list_add_tail(&new_pit->list, &entry->list);
			return 0;
		}

		/* If we found an entry with our offset already programmed we
		 * can simply return here, after freeing the memory. However,
		 * if the pit_index does not match we need to report an error.
		 */
		if (new_pit->src_offset == entry->src_offset) {
			int err = 0;

			/* If the PIT index is not the same we can't re-use
			 * the entry, so we must report an error.
			 */
			if (new_pit->pit_index != entry->pit_index)
				err = -EINVAL;

			kfree(new_pit);
			return err;
		}
	}

	/* If we reached here, then we haven't yet added the item. This means
	 * that we should add the item at the end of the list.
	 */
	list_add_tail(&new_pit->list, flex_pit_list);
	return 0;
}

/**
 * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
 * @pf: Pointer to the PF structure
 * @flex_pit_list: list of flexible src offsets in use
3278
 * @flex_pit_start: index to first entry for this section of the table
3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389
 *
 * In order to handle flexible data, the hardware uses a table of values
 * called the FLX_PIT table. This table is used to indicate which sections of
 * the input correspond to what PIT index values. Unfortunately, hardware is
 * very restrictive about programming this table. Entries must be ordered by
 * src_offset in ascending order, without duplicates. Additionally, unused
 * entries must be set to the unused index value, and must have valid size and
 * length according to the src_offset ordering.
 *
 * This function will reprogram the FLX_PIT register from a book-keeping
 * structure that we guarantee is already ordered correctly, and has no more
 * than 3 entries.
 *
 * To make things easier, we only support flexible values of one word length,
 * rather than allowing variable length flexible values.
 **/
static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
				      struct list_head *flex_pit_list,
				      int flex_pit_start)
{
	struct i40e_flex_pit *entry = NULL;
	u16 last_offset = 0;
	int i = 0, j = 0;

	/* First, loop over the list of flex PIT entries, and reprogram the
	 * registers.
	 */
	list_for_each_entry(entry, flex_pit_list, list) {
		/* We have to be careful when programming values for the
		 * largest SRC_OFFSET value. It is possible that adding
		 * additional empty values at the end would overflow the space
		 * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
		 * we check here and add the empty values prior to adding the
		 * largest value.
		 *
		 * To determine this, we will use a loop from i+1 to 3, which
		 * will determine whether the unused entries would have valid
		 * SRC_OFFSET. Note that there cannot be extra entries past
		 * this value, because the only valid values would have been
		 * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
		 * have been added to the list in the first place.
		 */
		for (j = i + 1; j < 3; j++) {
			u16 offset = entry->src_offset + j;
			int index = flex_pit_start + i;
			u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
						       1,
						       offset - 3);

			if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
				i40e_write_rx_ctl(&pf->hw,
						  I40E_PRTQF_FLX_PIT(index),
						  value);
				i++;
			}
		}

		/* Now, we can program the actual value into the table */
		i40e_write_rx_ctl(&pf->hw,
				  I40E_PRTQF_FLX_PIT(flex_pit_start + i),
				  I40E_FLEX_PREP_VAL(entry->pit_index + 50,
						     1,
						     entry->src_offset));
		i++;
	}

	/* In order to program the last entries in the table, we need to
	 * determine the valid offset. If the list is empty, we'll just start
	 * with 0. Otherwise, we'll start with the last item offset and add 1.
	 * This ensures that all entries have valid sizes. If we don't do this
	 * correctly, the hardware will disable flexible field parsing.
	 */
	if (!list_empty(flex_pit_list))
		last_offset = list_prev_entry(entry, list)->src_offset + 1;

	for (; i < 3; i++, last_offset++) {
		i40e_write_rx_ctl(&pf->hw,
				  I40E_PRTQF_FLX_PIT(flex_pit_start + i),
				  I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
						     1,
						     last_offset));
	}
}

/**
 * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
 * @pf: pointer to the PF structure
 *
 * This function reprograms both the L3 and L4 FLX_PIT tables. See the
 * internal helper function for implementation details.
 **/
static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
{
	__i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
				  I40E_FLEX_PIT_IDX_START_L3);

	__i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list,
				  I40E_FLEX_PIT_IDX_START_L4);

	/* We also need to program the L3 and L4 GLQF ORT register */
	i40e_write_rx_ctl(&pf->hw,
			  I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
			  I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
					    3, 1));

	i40e_write_rx_ctl(&pf->hw,
			  I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
			  I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
					    3, 1));
}

3390 3391
/**
 * i40e_flow_str - Converts a flow_type into a human readable string
3392
 * @fsp: the flow specification
3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412
 *
 * Currently only flow types we support are included here, and the string
 * value attempts to match what ethtool would use to configure this flow type.
 **/
static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
{
	switch (fsp->flow_type & ~FLOW_EXT) {
	case TCP_V4_FLOW:
		return "tcp4";
	case UDP_V4_FLOW:
		return "udp4";
	case SCTP_V4_FLOW:
		return "sctp4";
	case IP_USER_FLOW:
		return "ip4";
	default:
		return "unknown";
	}
}

3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443
/**
 * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
 * @pit_index: PIT index to convert
 *
 * Returns the mask for a given PIT index. Will return 0 if the pit_index is
 * of range.
 **/
static u64 i40e_pit_index_to_mask(int pit_index)
{
	switch (pit_index) {
	case 0:
		return I40E_FLEX_50_MASK;
	case 1:
		return I40E_FLEX_51_MASK;
	case 2:
		return I40E_FLEX_52_MASK;
	case 3:
		return I40E_FLEX_53_MASK;
	case 4:
		return I40E_FLEX_54_MASK;
	case 5:
		return I40E_FLEX_55_MASK;
	case 6:
		return I40E_FLEX_56_MASK;
	case 7:
		return I40E_FLEX_57_MASK;
	default:
		return 0;
	}
}

3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457
/**
 * i40e_print_input_set - Show changes between two input sets
 * @vsi: the vsi being configured
 * @old: the old input set
 * @new: the new input set
 *
 * Print the difference between old and new input sets by showing which series
 * of words are toggled on or off. Only displays the bits we actually support
 * changing.
 **/
static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
{
	struct i40e_pf *pf = vsi->back;
	bool old_value, new_value;
3458
	int i;
3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494

	old_value = !!(old & I40E_L3_SRC_MASK);
	new_value = !!(new & I40E_L3_SRC_MASK);
	if (old_value != new_value)
		netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
			   old_value ? "ON" : "OFF",
			   new_value ? "ON" : "OFF");

	old_value = !!(old & I40E_L3_DST_MASK);
	new_value = !!(new & I40E_L3_DST_MASK);
	if (old_value != new_value)
		netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
			   old_value ? "ON" : "OFF",
			   new_value ? "ON" : "OFF");

	old_value = !!(old & I40E_L4_SRC_MASK);
	new_value = !!(new & I40E_L4_SRC_MASK);
	if (old_value != new_value)
		netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
			   old_value ? "ON" : "OFF",
			   new_value ? "ON" : "OFF");

	old_value = !!(old & I40E_L4_DST_MASK);
	new_value = !!(new & I40E_L4_DST_MASK);
	if (old_value != new_value)
		netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
			   old_value ? "ON" : "OFF",
			   new_value ? "ON" : "OFF");

	old_value = !!(old & I40E_VERIFY_TAG_MASK);
	new_value = !!(new & I40E_VERIFY_TAG_MASK);
	if (old_value != new_value)
		netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
			   old_value ? "ON" : "OFF",
			   new_value ? "ON" : "OFF");

3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507
	/* Show change of flexible filter entries */
	for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
		u64 flex_mask = i40e_pit_index_to_mask(i);

		old_value = !!(old & flex_mask);
		new_value = !!(new & flex_mask);
		if (old_value != new_value)
			netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
				   i,
				   old_value ? "ON" : "OFF",
				   new_value ? "ON" : "OFF");
	}

3508 3509 3510 3511 3512 3513
	netif_info(pf, drv, vsi->netdev, "  Current input set: %0llx\n",
		   old);
	netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
		   new);
}

3514 3515
/**
 * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
3516
 * @vsi: pointer to the targeted VSI
3517
 * @fsp: pointer to Rx flow specification
3518
 * @userdef: userdefined data from flow specification
3519
 *
3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537
 * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
 * for partial matches exists with a few limitations. First, hardware only
 * supports masking by word boundary (2 bytes) and not per individual bit.
 * Second, hardware is limited to using one mask for a flow type and cannot
 * use a separate mask for each filter.
 *
 * To support these limitations, if we already have a configured filter for
 * the specified type, this function enforces that new filters of the type
 * match the configured input set. Otherwise, if we do not have a filter of
 * the specified type, we allow the input set to be updated to match the
 * desired filter.
 *
 * To help ensure that administrators understand why filters weren't displayed
 * as supported, we print a diagnostic message displaying how the input set
 * would change and warning to delete the preexisting filters if required.
 *
 * Returns 0 on successful input set match, and a negative return code on
 * failure.
3538
 **/
3539
static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
3540 3541
				     struct ethtool_rx_flow_spec *fsp,
				     struct i40e_rx_flow_userdef *userdef)
3542
{
3543
	struct i40e_pf *pf = vsi->back;
3544 3545
	struct ethtool_tcpip4_spec *tcp_ip4_spec;
	struct ethtool_usrip4_spec *usr_ip4_spec;
3546
	u64 current_mask, new_mask;
3547 3548
	bool new_flex_offset = false;
	bool flex_l3 = false;
3549
	u16 *fdir_filter_count;
3550 3551 3552
	u16 index, src_offset = 0;
	u8 pit_index = 0;
	int err;
3553 3554

	switch (fsp->flow_type & ~FLOW_EXT) {
3555 3556 3557 3558
	case SCTP_V4_FLOW:
		index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
		fdir_filter_count = &pf->fd_sctp4_filter_cnt;
		break;
3559 3560
	case TCP_V4_FLOW:
		index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3561
		fdir_filter_count = &pf->fd_tcp4_filter_cnt;
3562 3563 3564
		break;
	case UDP_V4_FLOW:
		index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3565
		fdir_filter_count = &pf->fd_udp4_filter_cnt;
3566 3567 3568
		break;
	case IP_USER_FLOW:
		index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3569
		fdir_filter_count = &pf->fd_ip4_filter_cnt;
3570
		flex_l3 = true;
3571 3572 3573 3574 3575 3576 3577 3578
		break;
	default:
		return -EOPNOTSUPP;
	}

	/* Read the current input set from register memory. */
	current_mask = i40e_read_fd_input_set(pf, index);
	new_mask = current_mask;
3579

3580 3581 3582 3583 3584 3585 3586 3587 3588
	/* Determine, if any, the required changes to the input set in order
	 * to support the provided mask.
	 *
	 * Hardware only supports masking at word (2 byte) granularity and does
	 * not support full bitwise masking. This implementation simplifies
	 * even further and only supports fully enabled or fully disabled
	 * masks for each field, even though we could split the ip4src and
	 * ip4dst fields.
	 */
3589
	switch (fsp->flow_type & ~FLOW_EXT) {
3590 3591 3592
	case SCTP_V4_FLOW:
		new_mask &= ~I40E_VERIFY_TAG_MASK;
		/* Fall through */
3593 3594 3595 3596 3597
	case TCP_V4_FLOW:
	case UDP_V4_FLOW:
		tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;

		/* IPv4 source address */
3598 3599 3600 3601 3602
		if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
			new_mask |= I40E_L3_SRC_MASK;
		else if (!tcp_ip4_spec->ip4src)
			new_mask &= ~I40E_L3_SRC_MASK;
		else
3603 3604 3605
			return -EOPNOTSUPP;

		/* IPv4 destination address */
3606 3607 3608 3609 3610
		if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
			new_mask |= I40E_L3_DST_MASK;
		else if (!tcp_ip4_spec->ip4dst)
			new_mask &= ~I40E_L3_DST_MASK;
		else
3611 3612 3613
			return -EOPNOTSUPP;

		/* L4 source port */
3614 3615 3616 3617 3618
		if (tcp_ip4_spec->psrc == htons(0xFFFF))
			new_mask |= I40E_L4_SRC_MASK;
		else if (!tcp_ip4_spec->psrc)
			new_mask &= ~I40E_L4_SRC_MASK;
		else
3619 3620 3621
			return -EOPNOTSUPP;

		/* L4 destination port */
3622 3623 3624 3625 3626
		if (tcp_ip4_spec->pdst == htons(0xFFFF))
			new_mask |= I40E_L4_DST_MASK;
		else if (!tcp_ip4_spec->pdst)
			new_mask &= ~I40E_L4_DST_MASK;
		else
3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637
			return -EOPNOTSUPP;

		/* Filtering on Type of Service is not supported. */
		if (tcp_ip4_spec->tos)
			return -EOPNOTSUPP;

		break;
	case IP_USER_FLOW:
		usr_ip4_spec = &fsp->m_u.usr_ip4_spec;

		/* IPv4 source address */
3638 3639 3640 3641 3642
		if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
			new_mask |= I40E_L3_SRC_MASK;
		else if (!usr_ip4_spec->ip4src)
			new_mask &= ~I40E_L3_SRC_MASK;
		else
3643 3644 3645
			return -EOPNOTSUPP;

		/* IPv4 destination address */
3646 3647 3648 3649 3650
		if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
			new_mask |= I40E_L3_DST_MASK;
		else if (!usr_ip4_spec->ip4dst)
			new_mask &= ~I40E_L3_DST_MASK;
		else
3651 3652 3653
			return -EOPNOTSUPP;

		/* First 4 bytes of L4 header */
3654 3655 3656 3657 3658
		if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF))
			new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
		else if (!usr_ip4_spec->l4_4_bytes)
			new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
		else
3659 3660 3661 3662 3663 3664
			return -EOPNOTSUPP;

		/* Filtering on Type of Service is not supported. */
		if (usr_ip4_spec->tos)
			return -EOPNOTSUPP;

3665
		/* Filtering on IP version is not supported */
3666 3667 3668
		if (usr_ip4_spec->ip_ver)
			return -EINVAL;

3669
		/* Filtering on L4 protocol is not supported */
3670 3671
		if (usr_ip4_spec->proto)
			return -EINVAL;
3672

3673 3674 3675 3676 3677
		break;
	default:
		return -EOPNOTSUPP;
	}

3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767
	/* First, clear all flexible filter entries */
	new_mask &= ~I40E_FLEX_INPUT_MASK;

	/* If we have a flexible filter, try to add this offset to the correct
	 * flexible filter PIT list. Once finished, we can update the mask.
	 * If the src_offset changed, we will get a new mask value which will
	 * trigger an input set change.
	 */
	if (userdef->flex_filter) {
		struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;

		/* Flexible offset must be even, since the flexible payload
		 * must be aligned on 2-byte boundary.
		 */
		if (userdef->flex_offset & 0x1) {
			dev_warn(&pf->pdev->dev,
				 "Flexible data offset must be 2-byte aligned\n");
			return -EINVAL;
		}

		src_offset = userdef->flex_offset >> 1;

		/* FLX_PIT source offset value is only so large */
		if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
			dev_warn(&pf->pdev->dev,
				 "Flexible data must reside within first 64 bytes of the packet payload\n");
			return -EINVAL;
		}

		/* See if this offset has already been programmed. If we get
		 * an ERR_PTR, then the filter is not safe to add. Otherwise,
		 * if we get a NULL pointer, this means we will need to add
		 * the offset.
		 */
		flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
						 src_offset);
		if (IS_ERR(flex_pit))
			return PTR_ERR(flex_pit);

		/* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
		 * packet types, and thus we need to program both L3 and L4
		 * flexible values. These must have identical flexible index,
		 * as otherwise we can't correctly program the input set. So
		 * we'll find both an L3 and L4 index and make sure they are
		 * the same.
		 */
		if (flex_l3) {
			l3_flex_pit =
				i40e_find_flex_offset(&pf->l3_flex_pit_list,
						      src_offset);
			if (IS_ERR(l3_flex_pit))
				return PTR_ERR(l3_flex_pit);

			if (flex_pit) {
				/* If we already had a matching L4 entry, we
				 * need to make sure that the L3 entry we
				 * obtained uses the same index.
				 */
				if (l3_flex_pit) {
					if (l3_flex_pit->pit_index !=
					    flex_pit->pit_index) {
						return -EINVAL;
					}
				} else {
					new_flex_offset = true;
				}
			} else {
				flex_pit = l3_flex_pit;
			}
		}

		/* If we didn't find an existing flex offset, we need to
		 * program a new one. However, we don't immediately program it
		 * here because we will wait to program until after we check
		 * that it is safe to change the input set.
		 */
		if (!flex_pit) {
			new_flex_offset = true;
			pit_index = i40e_unused_pit_index(pf);
		} else {
			pit_index = flex_pit->pit_index;
		}

		/* Update the mask with the new offset */
		new_mask |= i40e_pit_index_to_mask(pit_index);
	}

	/* If the mask and flexible filter offsets for this filter match the
	 * currently programmed values we don't need any input set change, so
	 * this filter is safe to install.
3768
	 */
3769
	if (new_mask == current_mask && !new_flex_offset)
3770 3771 3772 3773 3774
		return 0;

	netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
		   i40e_flow_str(fsp));
	i40e_print_input_set(vsi, current_mask, new_mask);
3775 3776 3777 3778
	if (new_flex_offset) {
		netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
			   pit_index, src_offset);
	}
3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801

	/* Hardware input sets are global across multiple ports, so even the
	 * main port cannot change them when in MFP mode as this would impact
	 * any filters on the other ports.
	 */
	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
		netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
		return -EOPNOTSUPP;
	}

	/* This filter requires us to update the input set. However, hardware
	 * only supports one input set per flow type, and does not support
	 * separate masks for each filter. This means that we can only support
	 * a single mask for all filters of a specific type.
	 *
	 * If we have preexisting filters, they obviously depend on the
	 * current programmed input set. Display a diagnostic message in this
	 * case explaining why the filter could not be accepted.
	 */
	if (*fdir_filter_count) {
		netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
			  i40e_flow_str(fsp),
			  *fdir_filter_count);
3802
		return -EOPNOTSUPP;
3803 3804 3805
	}

	i40e_write_fd_input_set(pf, index, new_mask);
3806

3807 3808 3809 3810 3811 3812 3813 3814 3815 3816
	/* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
	 * frames. If we're programming the input set for IPv4/Other, we also
	 * need to program the IPv4/Fragmented input set. Since we don't have
	 * separate support, we'll always assume and enforce that the two flow
	 * types must have matching input sets.
	 */
	if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
		i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
					new_mask);

3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834
	/* Add the new offset and update table, if necessary */
	if (new_flex_offset) {
		err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
					   pit_index);
		if (err)
			return err;

		if (flex_l3) {
			err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
						   src_offset,
						   pit_index);
			if (err)
				return err;
		}

		i40e_reprogram_flex_pit(pf);
	}

3835 3836 3837
	return 0;
}

3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918
/**
 * i40e_match_fdir_filter - Return true of two filters match
 * @a: pointer to filter struct
 * @b: pointer to filter struct
 *
 * Returns true if the two filters match exactly the same criteria. I.e. they
 * match the same flow type and have the same parameters. We don't need to
 * check any input-set since all filters of the same flow type must use the
 * same input set.
 **/
static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a,
				   struct i40e_fdir_filter *b)
{
	/* The filters do not much if any of these criteria differ. */
	if (a->dst_ip != b->dst_ip ||
	    a->src_ip != b->src_ip ||
	    a->dst_port != b->dst_port ||
	    a->src_port != b->src_port ||
	    a->flow_type != b->flow_type ||
	    a->ip4_proto != b->ip4_proto)
		return false;

	return true;
}

/**
 * i40e_disallow_matching_filters - Check that new filters differ
 * @vsi: pointer to the targeted VSI
 * @input: new filter to check
 *
 * Due to hardware limitations, it is not possible for two filters that match
 * similar criteria to be programmed at the same time. This is true for a few
 * reasons:
 *
 * (a) all filters matching a particular flow type must use the same input
 * set, that is they must match the same criteria.
 * (b) different flow types will never match the same packet, as the flow type
 * is decided by hardware before checking which rules apply.
 * (c) hardware has no way to distinguish which order filters apply in.
 *
 * Due to this, we can't really support using the location data to order
 * filters in the hardware parsing. It is technically possible for the user to
 * request two filters matching the same criteria but which select different
 * queues. In this case, rather than keep both filters in the list, we reject
 * the 2nd filter when the user requests adding it.
 *
 * This avoids needing to track location for programming the filter to
 * hardware, and ensures that we avoid some strange scenarios involving
 * deleting filters which match the same criteria.
 **/
static int i40e_disallow_matching_filters(struct i40e_vsi *vsi,
					  struct i40e_fdir_filter *input)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_fdir_filter *rule;
	struct hlist_node *node2;

	/* Loop through every filter, and check that it doesn't match */
	hlist_for_each_entry_safe(rule, node2,
				  &pf->fdir_filter_list, fdir_node) {
		/* Don't check the filters match if they share the same fd_id,
		 * since the new filter is actually just updating the target
		 * of the old filter.
		 */
		if (rule->fd_id == input->fd_id)
			continue;

		/* If any filters match, then print a warning message to the
		 * kernel message buffer and bail out.
		 */
		if (i40e_match_fdir_filter(rule, input)) {
			dev_warn(&pf->pdev->dev,
				 "Existing user defined filter %d already matches this flow.\n",
				 rule->fd_id);
			return -EINVAL;
		}
	}

	return 0;
}

J
Jesse Brandeburg 已提交
3919
/**
3920
 * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
J
Jesse Brandeburg 已提交
3921 3922 3923
 * @vsi: pointer to the targeted VSI
 * @cmd: command to get or set RX flow classification rules
 *
3924 3925
 * Add Flow Director filters for a specific flow spec based on their
 * protocol.  Returns 0 if the filters were successfully added.
J
Jesse Brandeburg 已提交
3926
 **/
3927 3928
static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
				 struct ethtool_rxnfc *cmd)
J
Jesse Brandeburg 已提交
3929
{
3930
	struct i40e_rx_flow_userdef userdef;
3931 3932
	struct ethtool_rx_flow_spec *fsp;
	struct i40e_fdir_filter *input;
3933
	u16 dest_vsi = 0, q_index = 0;
J
Jesse Brandeburg 已提交
3934
	struct i40e_pf *pf;
3935
	int ret = -EINVAL;
3936
	u8 dest_ctl;
J
Jesse Brandeburg 已提交
3937 3938 3939 3940 3941

	if (!vsi)
		return -EINVAL;
	pf = vsi->back;

3942 3943 3944
	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
		return -EOPNOTSUPP;

3945
	if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
3946 3947
		return -ENOSPC;

3948 3949
	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
	    test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3950 3951
		return -EBUSY;

3952
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3953 3954
		return -EBUSY;

3955 3956
	fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;

3957 3958 3959 3960
	/* Parse the user-defined field */
	if (i40e_parse_rx_flow_user_data(fsp, &userdef))
		return -EINVAL;

3961 3962 3963 3964
	/* Extended MAC field is not supported */
	if (fsp->flow_type & FLOW_MAC_EXT)
		return -EINVAL;

3965
	ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
3966 3967 3968
	if (ret)
		return ret;

3969 3970
	if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
			      pf->hw.func_caps.fd_filters_guaranteed)) {
J
Jesse Brandeburg 已提交
3971
		return -EINVAL;
3972
	}
J
Jesse Brandeburg 已提交
3973

3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999
	/* ring_cookie is either the drop index, or is a mask of the queue
	 * index and VF id we wish to target.
	 */
	if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
		dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
	} else {
		u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
		u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);

		if (!vf) {
			if (ring >= vsi->num_queue_pairs)
				return -EINVAL;
			dest_vsi = vsi->id;
		} else {
			/* VFs are zero-indexed, so we subtract one here */
			vf--;

			if (vf >= pf->num_alloc_vfs)
				return -EINVAL;
			if (ring >= pf->vf[vf].num_queue_pairs)
				return -EINVAL;
			dest_vsi = pf->vf[vf].lan_vsi_id;
		}
		dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
		q_index = ring;
	}
J
Jesse Brandeburg 已提交
4000

4001
	input = kzalloc(sizeof(*input), GFP_KERNEL);
J
Jesse Brandeburg 已提交
4002

4003 4004
	if (!input)
		return -ENOMEM;
J
Jesse Brandeburg 已提交
4005

4006
	input->fd_id = fsp->location;
4007 4008 4009
	input->q_index = q_index;
	input->dest_vsi = dest_vsi;
	input->dest_ctl = dest_ctl;
4010
	input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
4011
	input->cnt_index  = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
4012 4013
	input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
	input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4014
	input->flow_type = fsp->flow_type & ~FLOW_EXT;
4015
	input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
4016 4017 4018 4019 4020 4021

	/* Reverse the src and dest notion, since the HW expects them to be from
	 * Tx perspective where as the input from user is from Rx filter view.
	 */
	input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
	input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
4022 4023
	input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
	input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4024

4025 4026 4027 4028 4029 4030
	if (userdef.flex_filter) {
		input->flex_filter = true;
		input->flex_word = cpu_to_be16(userdef.flex_word);
		input->flex_offset = userdef.flex_offset;
	}

4031 4032 4033 4034 4035
	/* Avoid programming two filters with identical match criteria. */
	ret = i40e_disallow_matching_filters(vsi, input);
	if (ret)
		goto free_filter_memory;

4036 4037 4038 4039 4040
	/* Add the input filter to the fdir_input_list, possibly replacing
	 * a previous filter. Do not free the input structure after adding it
	 * to the list as this would cause a use-after-free bug.
	 */
	i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
4041 4042 4043
	ret = i40e_add_del_fdir(vsi, input, true);
	if (ret)
		goto remove_sw_rule;
4044 4045
	return 0;

4046 4047 4048
remove_sw_rule:
	hlist_del(&input->fdir_node);
	pf->fdir_pf_active_filters--;
4049
free_filter_memory:
4050
	kfree(input);
J
Jesse Brandeburg 已提交
4051 4052
	return ret;
}
J
Jesse Brandeburg 已提交
4053

J
Jesse Brandeburg 已提交
4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072
/**
 * i40e_set_rxnfc - command to set RX flow classification rules
 * @netdev: network interface device structure
 * @cmd: ethtool rxnfc command
 *
 * Returns Success if the command is supported.
 **/
static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int ret = -EOPNOTSUPP;

	switch (cmd->cmd) {
	case ETHTOOL_SRXFH:
		ret = i40e_set_rss_hash_opt(pf, cmd);
		break;
	case ETHTOOL_SRXCLSRLINS:
4073
		ret = i40e_add_fdir_ethtool(vsi, cmd);
J
Jesse Brandeburg 已提交
4074 4075
		break;
	case ETHTOOL_SRXCLSRLDEL:
4076
		ret = i40e_del_fdir_entry(vsi, cmd);
J
Jesse Brandeburg 已提交
4077 4078 4079 4080 4081 4082 4083 4084
		break;
	default:
		break;
	}

	return ret;
}

4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096
/**
 * i40e_max_channels - get Max number of combined channels supported
 * @vsi: vsi pointer
 **/
static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
{
	/* TODO: This code assumes DCB and FD is disabled for now. */
	return vsi->alloc_queue_pairs;
}

/**
 * i40e_get_channels - Get the current channels enabled and max supported etc.
4097
 * @dev: network interface device structure
4098 4099 4100 4101 4102 4103 4104 4105
 * @ch: ethtool channels structure
 *
 * We don't support separate tx and rx queues as channels. The other count
 * represents how many queues are being used for control. max_combined counts
 * how many queue pairs we can support. They may not be mapped 1 to 1 with
 * q_vectors since we support a lot more queue pairs than q_vectors.
 **/
static void i40e_get_channels(struct net_device *dev,
4106
			      struct ethtool_channels *ch)
4107 4108 4109 4110 4111 4112 4113 4114 4115
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;

	/* report maximum channels */
	ch->max_combined = i40e_max_channels(vsi);

	/* report info for other vector */
J
Jesse Brandeburg 已提交
4116
	ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
4117 4118 4119 4120 4121 4122 4123 4124
	ch->max_other = ch->other_count;

	/* Note: This code assumes DCB is disabled for now. */
	ch->combined_count = vsi->num_queue_pairs;
}

/**
 * i40e_set_channels - Set the new channels count.
4125
 * @dev: network interface device structure
4126 4127 4128 4129 4130 4131
 * @ch: ethtool channels structure
 *
 * The new channels count may not be the same as requested by the user
 * since it gets rounded down to a power of 2 value.
 **/
static int i40e_set_channels(struct net_device *dev,
4132
			     struct ethtool_channels *ch)
4133
{
4134
	const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4135 4136 4137 4138
	struct i40e_netdev_priv *np = netdev_priv(dev);
	unsigned int count = ch->combined_count;
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
4139 4140
	struct i40e_fdir_filter *rule;
	struct hlist_node *node2;
4141
	int new_count;
4142
	int err = 0;
4143 4144 4145 4146 4147

	/* We do not support setting channels for any other VSI at present */
	if (vsi->type != I40E_VSI_MAIN)
		return -EINVAL;

4148 4149 4150 4151 4152 4153
	/* We do not support setting channels via ethtool when TCs are
	 * configured through mqprio
	 */
	if (pf->flags & I40E_FLAG_TC_MQPRIO)
		return -EINVAL;

4154 4155 4156 4157 4158
	/* verify they are not requesting separate vectors */
	if (!count || ch->rx_count || ch->tx_count)
		return -EINVAL;

	/* verify other_count has not changed */
J
Jesse Brandeburg 已提交
4159
	if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
4160 4161 4162 4163 4164 4165
		return -EINVAL;

	/* verify the number of channels does not exceed hardware limits */
	if (count > i40e_max_channels(vsi))
		return -EINVAL;

4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185
	/* verify that the number of channels does not invalidate any current
	 * flow director rules
	 */
	hlist_for_each_entry_safe(rule, node2,
				  &pf->fdir_filter_list, fdir_node) {
		if (rule->dest_ctl != drop && count <= rule->q_index) {
			dev_warn(&pf->pdev->dev,
				 "Existing user defined filter %d assigns flow to queue %d\n",
				 rule->fd_id, rule->q_index);
			err = -EINVAL;
		}
	}

	if (err) {
		dev_err(&pf->pdev->dev,
			"Existing filter rules must be deleted to reduce combined channel count to %d\n",
			count);
		return err;
	}

4186 4187 4188 4189 4190 4191 4192
	/* update feature limits from largest to smallest supported values */
	/* TODO: Flow director limit, DCB etc */

	/* use rss_reconfig to rebuild with new queue count and update traffic
	 * class queue mapping
	 */
	new_count = i40e_reconfig_rss_queues(pf, count);
4193
	if (new_count > 0)
4194 4195 4196 4197 4198
		return 0;
	else
		return -EINVAL;
}

M
Mitch A Williams 已提交
4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220
/**
 * i40e_get_rxfh_key_size - get the RSS hash key size
 * @netdev: network interface device structure
 *
 * Returns the table size.
 **/
static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
{
	return I40E_HKEY_ARRAY_SIZE;
}

/**
 * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
 * @netdev: network interface device structure
 *
 * Returns the table size.
 **/
static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
{
	return I40E_HLUT_ARRAY_SIZE;
}

4221 4222 4223 4224 4225 4226 4227 4228 4229 4230
/**
 * i40e_get_rxfh - get the rx flow hash indirection table
 * @netdev: network interface device structure
 * @indir: indirection table
 * @key: hash key
 * @hfunc: hash function
 *
 * Reads the indirection table directly from the hardware. Returns 0 on
 * success.
 **/
M
Mitch A Williams 已提交
4231 4232 4233 4234 4235
static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
			 u8 *hfunc)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
4236 4237 4238
	u8 *lut, *seed = NULL;
	int ret;
	u16 i;
M
Mitch A Williams 已提交
4239 4240 4241 4242 4243 4244 4245

	if (hfunc)
		*hfunc = ETH_RSS_HASH_TOP;

	if (!indir)
		return 0;

4246 4247 4248 4249 4250 4251 4252 4253 4254
	seed = key;
	lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
	if (!lut)
		return -ENOMEM;
	ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
	if (ret)
		goto out;
	for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
		indir[i] = (u32)(lut[i]);
M
Mitch A Williams 已提交
4255

4256 4257 4258 4259
out:
	kfree(lut);

	return ret;
M
Mitch A Williams 已提交
4260 4261 4262 4263 4264 4265 4266
}

/**
 * i40e_set_rxfh - set the rx flow hash indirection table
 * @netdev: network interface device structure
 * @indir: indirection table
 * @key: hash key
4267
 * @hfunc: hash function to use
M
Mitch A Williams 已提交
4268
 *
M
Mitch Williams 已提交
4269
 * Returns -EINVAL if the table specifies an invalid queue id, otherwise
M
Mitch A Williams 已提交
4270 4271 4272 4273 4274 4275 4276
 * returns 0 after programming the table.
 **/
static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
			 const u8 *key, const u8 hfunc)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
4277
	struct i40e_pf *pf = vsi->back;
4278
	u8 *seed = NULL;
4279
	u16 i;
M
Mitch A Williams 已提交
4280 4281 4282 4283 4284

	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
		return -EOPNOTSUPP;

	if (key) {
4285 4286 4287 4288 4289 4290 4291 4292
		if (!vsi->rss_hkey_user) {
			vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
						     GFP_KERNEL);
			if (!vsi->rss_hkey_user)
				return -ENOMEM;
		}
		memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
		seed = vsi->rss_hkey_user;
M
Mitch A Williams 已提交
4293
	}
4294 4295 4296 4297 4298 4299 4300
	if (!vsi->rss_lut_user) {
		vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
		if (!vsi->rss_lut_user)
			return -ENOMEM;
	}

	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
4301 4302 4303 4304 4305 4306
	if (indir)
		for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
			vsi->rss_lut_user[i] = (u8)(indir[i]);
	else
		i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
				  vsi->rss_size);
4307

4308 4309
	return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
			       I40E_HLUT_ARRAY_SIZE);
M
Mitch A Williams 已提交
4310 4311
}

4312 4313 4314 4315 4316
/**
 * i40e_get_priv_flags - report device private flags
 * @dev: network interface device structure
 *
 * The get string set count and the string set should be matched for each
4317
 * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
4318 4319 4320 4321
 * array.
 *
 * Returns a u32 bitmap of flags.
 **/
4322
static u32 i40e_get_priv_flags(struct net_device *dev)
4323 4324 4325 4326
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
4327 4328 4329 4330
	u32 i, j, ret_flags = 0;

	for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
		const struct i40e_priv_flags *priv_flags;
4331

4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347
		priv_flags = &i40e_gstrings_priv_flags[i];

		if (priv_flags->flag & pf->flags)
			ret_flags |= BIT(i);
	}

	if (pf->hw.pf_id != 0)
		return ret_flags;

	for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
		const struct i40e_priv_flags *priv_flags;

		priv_flags = &i40e_gl_gstrings_priv_flags[j];

		if (priv_flags->flag & pf->flags)
			ret_flags |= BIT(i + j);
4348
	}
4349 4350 4351 4352

	return ret_flags;
}

S
Shannon Nelson 已提交
4353 4354 4355 4356 4357 4358 4359 4360 4361 4362
/**
 * i40e_set_priv_flags - set private flags
 * @dev: network interface device structure
 * @flags: bit flags to be set
 **/
static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
4363
	u64 orig_flags, new_flags, changed_flags;
4364
	u32 i, j;
4365

4366 4367
	orig_flags = READ_ONCE(pf->flags);
	new_flags = orig_flags;
4368

4369 4370 4371 4372 4373 4374
	for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
		const struct i40e_priv_flags *priv_flags;

		priv_flags = &i40e_gstrings_priv_flags[i];

		if (flags & BIT(i))
4375
			new_flags |= priv_flags->flag;
4376
		else
4377 4378 4379 4380 4381 4382
			new_flags &= ~(priv_flags->flag);

		/* If this is a read-only flag, it can't be changed */
		if (priv_flags->read_only &&
		    ((orig_flags ^ new_flags) & ~BIT(i)))
			return -EOPNOTSUPP;
4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393
	}

	if (pf->hw.pf_id != 0)
		goto flags_complete;

	for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
		const struct i40e_priv_flags *priv_flags;

		priv_flags = &i40e_gl_gstrings_priv_flags[j];

		if (flags & BIT(i + j))
4394
			new_flags |= priv_flags->flag;
4395
		else
4396 4397 4398 4399 4400 4401
			new_flags &= ~(priv_flags->flag);

		/* If this is a read-only flag, it can't be changed */
		if (priv_flags->read_only &&
		    ((orig_flags ^ new_flags) & ~BIT(i)))
			return -EOPNOTSUPP;
4402 4403 4404
	}

flags_complete:
4405 4406
	changed_flags = orig_flags ^ new_flags;

4407 4408 4409 4410 4411 4412 4413 4414 4415
	/* Before we finalize any flag changes, we need to perform some
	 * checks to ensure that the changes are supported and safe.
	 */

	/* ATR eviction is not supported on all devices */
	if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
	    !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
		return -EOPNOTSUPP;

4416 4417 4418 4419 4420 4421
	/* If the driver detected FW LLDP was disabled on init, this flag could
	 * be set, however we do not support _changing_ the flag if NPAR is
	 * enabled or FW API version < 1.7.  There are situations where older
	 * FW versions/NPAR enabled PFs could disable LLDP, however we _must_
	 * not allow the user to enable/disable LLDP with this flag on
	 * unsupported FW versions.
4422
	 */
4423
	if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
4424
		if (!(pf->hw_features & I40E_HW_STOPPABLE_FW_LLDP)) {
4425
			dev_warn(&pf->pdev->dev,
4426
				 "Device does not support changing FW LLDP\n");
4427 4428 4429 4430
			return -EOPNOTSUPP;
		}
	}

4431 4432 4433 4434
	/* Now that we've checked to ensure that the new flags are valid, load
	 * them into place. Since we only modify flags either (a) during
	 * initialization or (b) while holding the RTNL lock, we don't need
	 * anything fancy here.
4435
	 */
4436
	pf->flags = new_flags;
4437

4438 4439 4440
	/* Process any additional changes needed as a result of flag changes.
	 * The changed_flags value reflects the list of bits that were
	 * changed in the code above.
4441
	 */
4442

4443 4444 4445
	/* Flush current ATR settings if ATR was disabled */
	if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
	    !(pf->flags & I40E_FLAG_FD_ATR_ENABLED)) {
4446
		set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
4447
		set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
4448 4449
	}

4450 4451 4452 4453
	if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
		u16 sw_flags = 0, valid_flags = 0;
		int ret;

4454 4455 4456 4457
		if (!(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
			sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
		valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
		ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
4458
						0, NULL);
4459 4460 4461 4462 4463 4464 4465 4466 4467 4468
		if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
			dev_info(&pf->pdev->dev,
				 "couldn't set switch config bits, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
			/* not a fatal problem, just keep going */
		}
	}

4469 4470 4471 4472 4473 4474
	if ((changed_flags & pf->flags &
	     I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
	    (pf->flags & I40E_FLAG_MFP_ENABLED))
		dev_warn(&pf->pdev->dev,
			 "Turning on link-down-on-close flag may affect other partitions\n");

4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498
	if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
		if (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) {
			struct i40e_dcbx_config *dcbcfg;
			int i;

			i40e_aq_stop_lldp(&pf->hw, true, NULL);
			i40e_aq_set_dcb_parameters(&pf->hw, true, NULL);
			/* reset local_dcbx_config to default */
			dcbcfg = &pf->hw.local_dcbx_config;
			dcbcfg->etscfg.willing = 1;
			dcbcfg->etscfg.maxtcs = 0;
			dcbcfg->etscfg.tcbwtable[0] = 100;
			for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++)
				dcbcfg->etscfg.tcbwtable[i] = 0;
			for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
				dcbcfg->etscfg.prioritytable[i] = 0;
			dcbcfg->etscfg.tsatable[0] = I40E_IEEE_TSA_ETS;
			dcbcfg->pfc.willing = 1;
			dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
		} else {
			i40e_aq_start_lldp(&pf->hw, NULL);
		}
	}

4499 4500 4501
	/* Issue reset to cause things to take effect, as additional bits
	 * are added we will need to create a mask of bits requiring reset
	 */
4502 4503
	if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
			     I40E_FLAG_LEGACY_RX |
4504 4505
			     I40E_FLAG_SOURCE_PRUNING_DISABLED |
			     I40E_FLAG_DISABLE_FW_LLDP))
4506
		i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
4507

S
Shannon Nelson 已提交
4508 4509 4510
	return 0;
}

4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662
/**
 * i40e_get_module_info - get (Q)SFP+ module type info
 * @netdev: network interface device structure
 * @modinfo: module EEPROM size and layout information structure
 **/
static int i40e_get_module_info(struct net_device *netdev,
				struct ethtool_modinfo *modinfo)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u32 sff8472_comp = 0;
	u32 sff8472_swap = 0;
	u32 sff8636_rev = 0;
	i40e_status status;
	u32 type = 0;

	/* Check if firmware supports reading module EEPROM. */
	if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) {
		netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n");
		return -EINVAL;
	}

	status = i40e_update_link_info(hw);
	if (status)
		return -EIO;

	if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) {
		netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n");
		return -EINVAL;
	}

	type = hw->phy.link_info.module_type[0];

	switch (type) {
	case I40E_MODULE_TYPE_SFP:
		status = i40e_aq_get_phy_register(hw,
				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
				I40E_I2C_EEPROM_DEV_ADDR,
				I40E_MODULE_SFF_8472_COMP,
				&sff8472_comp, NULL);
		if (status)
			return -EIO;

		status = i40e_aq_get_phy_register(hw,
				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
				I40E_I2C_EEPROM_DEV_ADDR,
				I40E_MODULE_SFF_8472_SWAP,
				&sff8472_swap, NULL);
		if (status)
			return -EIO;

		/* Check if the module requires address swap to access
		 * the other EEPROM memory page.
		 */
		if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
			netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n");
			modinfo->type = ETH_MODULE_SFF_8079;
			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
		} else if (sff8472_comp == 0x00) {
			/* Module is not SFF-8472 compliant */
			modinfo->type = ETH_MODULE_SFF_8079;
			modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
		} else {
			modinfo->type = ETH_MODULE_SFF_8472;
			modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
		}
		break;
	case I40E_MODULE_TYPE_QSFP_PLUS:
		/* Read from memory page 0. */
		status = i40e_aq_get_phy_register(hw,
				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
				0,
				I40E_MODULE_REVISION_ADDR,
				&sff8636_rev, NULL);
		if (status)
			return -EIO;
		/* Determine revision compliance byte */
		if (sff8636_rev > 0x02) {
			/* Module is SFF-8636 compliant */
			modinfo->type = ETH_MODULE_SFF_8636;
			modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
		} else {
			modinfo->type = ETH_MODULE_SFF_8436;
			modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
		}
		break;
	case I40E_MODULE_TYPE_QSFP28:
		modinfo->type = ETH_MODULE_SFF_8636;
		modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
		break;
	default:
		netdev_err(vsi->netdev, "Module type unrecognized\n");
		return -EINVAL;
	}
	return 0;
}

/**
 * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
 * @netdev: network interface device structure
 * @ee: EEPROM dump request structure
 * @data: buffer to be filled with EEPROM contents
 **/
static int i40e_get_module_eeprom(struct net_device *netdev,
				  struct ethtool_eeprom *ee,
				  u8 *data)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	bool is_sfp = false;
	i40e_status status;
	u32 value = 0;
	int i;

	if (!ee || !ee->len || !data)
		return -EINVAL;

	if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
		is_sfp = true;

	for (i = 0; i < ee->len; i++) {
		u32 offset = i + ee->offset;
		u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;

		/* Check if we need to access the other memory page */
		if (is_sfp) {
			if (offset >= ETH_MODULE_SFF_8079_LEN) {
				offset -= ETH_MODULE_SFF_8079_LEN;
				addr = I40E_I2C_EEPROM_DEV_ADDR2;
			}
		} else {
			while (offset >= ETH_MODULE_SFF_8436_LEN) {
				/* Compute memory page number and offset. */
				offset -= ETH_MODULE_SFF_8436_LEN / 2;
				addr++;
			}
		}

		status = i40e_aq_get_phy_register(hw,
				I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
				addr, offset, &value, NULL);
		if (status)
			return -EIO;
		data[i] = value;
	}
	return 0;
}

J
Jesse Brandeburg 已提交
4663 4664 4665 4666 4667 4668 4669
static const struct ethtool_ops i40e_ethtool_ops = {
	.get_drvinfo		= i40e_get_drvinfo,
	.get_regs_len		= i40e_get_regs_len,
	.get_regs		= i40e_get_regs,
	.nway_reset		= i40e_nway_reset,
	.get_link		= ethtool_op_get_link,
	.get_wol		= i40e_get_wol,
S
Shannon Nelson 已提交
4670
	.set_wol		= i40e_set_wol,
4671
	.set_eeprom		= i40e_set_eeprom,
J
Jesse Brandeburg 已提交
4672 4673 4674 4675 4676
	.get_eeprom_len		= i40e_get_eeprom_len,
	.get_eeprom		= i40e_get_eeprom,
	.get_ringparam		= i40e_get_ringparam,
	.set_ringparam		= i40e_set_ringparam,
	.get_pauseparam		= i40e_get_pauseparam,
4677
	.set_pauseparam		= i40e_set_pauseparam,
J
Jesse Brandeburg 已提交
4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688
	.get_msglevel		= i40e_get_msglevel,
	.set_msglevel		= i40e_set_msglevel,
	.get_rxnfc		= i40e_get_rxnfc,
	.set_rxnfc		= i40e_set_rxnfc,
	.self_test		= i40e_diag_test,
	.get_strings		= i40e_get_strings,
	.set_phys_id		= i40e_set_phys_id,
	.get_sset_count		= i40e_get_sset_count,
	.get_ethtool_stats	= i40e_get_ethtool_stats,
	.get_coalesce		= i40e_get_coalesce,
	.set_coalesce		= i40e_set_coalesce,
M
Mitch A Williams 已提交
4689 4690 4691 4692
	.get_rxfh_key_size	= i40e_get_rxfh_key_size,
	.get_rxfh_indir_size	= i40e_get_rxfh_indir_size,
	.get_rxfh		= i40e_get_rxfh,
	.set_rxfh		= i40e_set_rxfh,
4693 4694
	.get_channels		= i40e_get_channels,
	.set_channels		= i40e_set_channels,
4695 4696
	.get_module_info	= i40e_get_module_info,
	.get_module_eeprom	= i40e_get_module_eeprom,
J
Jesse Brandeburg 已提交
4697
	.get_ts_info		= i40e_get_ts_info,
4698
	.get_priv_flags		= i40e_get_priv_flags,
S
Shannon Nelson 已提交
4699
	.set_priv_flags		= i40e_set_priv_flags,
4700
	.get_per_queue_coalesce	= i40e_get_per_queue_coalesce,
4701
	.set_per_queue_coalesce	= i40e_set_per_queue_coalesce,
4702 4703
	.get_link_ksettings	= i40e_get_link_ksettings,
	.set_link_ksettings	= i40e_set_link_ksettings,
J
Jesse Brandeburg 已提交
4704 4705 4706 4707
};

void i40e_set_ethtool_ops(struct net_device *netdev)
{
4708
	netdev->ethtool_ops = &i40e_ethtool_ops;
J
Jesse Brandeburg 已提交
4709
}