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android-kvm / linux / 1152b16842c903dd7e2896088d5ff73f26443653 / . / drivers / net / ethernet / intel / i40e / i40e_ethtool.c
blob: 513ba697435594e0749bbb3ba7817f2ccb3caa12 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */
/* ethtool support for i40e */
#include "i40e.h"
#include "i40e_diag.h"
#include "i40e_txrx_common.h"
/* ethtool statistics helpers */
/**
* struct i40e_stats - definition for an ethtool statistic
* @stat_string: statistic name to display in ethtool -S output
* @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
* @stat_offset: offsetof() the stat from a base pointer
*
* This structure defines a statistic to be added to the ethtool stats buffer.
* It defines a statistic as offset from a common base pointer. Stats should
* be defined in constant arrays using the I40E_STAT macro, with every element
* of the array using the same _type for calculating the sizeof_stat and
* stat_offset.
*
* The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
* sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
* the i40e_add_ethtool_stat() helper function.
*
* The @stat_string is interpreted as a format string, allowing formatted
* values to be inserted while looping over multiple structures for a given
* statistics array. Thus, every statistic string in an array should have the
* same type and number of format specifiers, to be formatted by variadic
* arguments to the i40e_add_stat_string() helper function.
**/
struct i40e_stats {
char stat_string[ETH_GSTRING_LEN];
int sizeof_stat;
int stat_offset;
};
/* Helper macro to define an i40e_stat structure with proper size and type.
* Use this when defining constant statistics arrays. Note that @_type expects
* only a type name and is used multiple times.
*/
#define I40E_STAT(_type, _name, _stat) { \
.stat_string = _name, \
.sizeof_stat = sizeof_field(_type, _stat), \
.stat_offset = offsetof(_type, _stat) \
}
/* Helper macro for defining some statistics directly copied from the netdev
* stats structure.
*/
#define I40E_NETDEV_STAT(_net_stat) \
I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
/* Helper macro for defining some statistics related to queues */
#define I40E_QUEUE_STAT(_name, _stat) \
I40E_STAT(struct i40e_ring, _name, _stat)
/* Stats associated with a Tx or Rx ring */
static const struct i40e_stats i40e_gstrings_queue_stats[] = {
I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
};
/**
* i40e_add_one_ethtool_stat - copy the stat into the supplied buffer
* @data: location to store the stat value
* @pointer: basis for where to copy from
* @stat: the stat definition
*
* Copies the stat data defined by the pointer and stat structure pair into
* the memory supplied as data. Used to implement i40e_add_ethtool_stats and
* i40e_add_queue_stats. If the pointer is null, data will be zero'd.
*/
static void
i40e_add_one_ethtool_stat(u64 *data, void *pointer,
const struct i40e_stats *stat)
{
char *p;
if (!pointer) {
/* ensure that the ethtool data buffer is zero'd for any stats
* which don't have a valid pointer.
*/
*data = 0;
return;
}
p = (char *)pointer + stat->stat_offset;
switch (stat->sizeof_stat) {
case sizeof(u64):
*data = *((u64 *)p);
break;
case sizeof(u32):
*data = *((u32 *)p);
break;
case sizeof(u16):
*data = *((u16 *)p);
break;
case sizeof(u8):
*data = *((u8 *)p);
break;
default:
WARN_ONCE(1, "unexpected stat size for %s",
stat->stat_string);
*data = 0;
}
}
/**
* __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer
* @data: ethtool stats buffer
* @pointer: location to copy stats from
* @stats: array of stats to copy
* @size: the size of the stats definition
*
* Copy the stats defined by the stats array using the pointer as a base into
* the data buffer supplied by ethtool. Updates the data pointer to point to
* the next empty location for successive calls to __i40e_add_ethtool_stats.
* If pointer is null, set the data values to zero and update the pointer to
* skip these stats.
**/
static void
__i40e_add_ethtool_stats(u64 **data, void *pointer,
const struct i40e_stats stats[],
const unsigned int size)
{
unsigned int i;
for (i = 0; i < size; i++)
i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
}
/**
* i40e_add_ethtool_stats - copy stats into ethtool supplied buffer
* @data: ethtool stats buffer
* @pointer: location where stats are stored
* @stats: static const array of stat definitions
*
* Macro to ease the use of __i40e_add_ethtool_stats by taking a static
* constant stats array and passing the ARRAY_SIZE(). This avoids typos by
* ensuring that we pass the size associated with the given stats array.
*
* The parameter @stats is evaluated twice, so parameters with side effects
* should be avoided.
**/
#define i40e_add_ethtool_stats(data, pointer, stats) \
__i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
/**
* i40e_add_queue_stats - copy queue statistics into supplied buffer
* @data: ethtool stats buffer
* @ring: the ring to copy
*
* Queue statistics must be copied while protected by
* u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats.
* Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the
* ring pointer is null, zero out the queue stat values and update the data
* pointer. Otherwise safely copy the stats from the ring into the supplied
* buffer and update the data pointer when finished.
*
* This function expects to be called while under rcu_read_lock().
**/
static void
i40e_add_queue_stats(u64 **data, struct i40e_ring *ring)
{
const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats);
const struct i40e_stats *stats = i40e_gstrings_queue_stats;
unsigned int start;
unsigned int i;
/* To avoid invalid statistics values, ensure that we keep retrying
* the copy until we get a consistent value according to
* u64_stats_fetch_retry_irq. But first, make sure our ring is
* non-null before attempting to access its syncp.
*/
do {
start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp);
for (i = 0; i < size; i++) {
i40e_add_one_ethtool_stat(&(*data)[i], ring,
&stats[i]);
}
} while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start));
/* Once we successfully copy the stats in, update the data pointer */
*data += size;
}
/**
* __i40e_add_stat_strings - copy stat strings into ethtool buffer
* @p: ethtool supplied buffer
* @stats: stat definitions array
* @size: size of the stats array
*
* Format and copy the strings described by stats into the buffer pointed at
* by p.
**/
static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
const unsigned int size, ...)
{
unsigned int i;
for (i = 0; i < size; i++) {
va_list args;
va_start(args, size);
vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
*p += ETH_GSTRING_LEN;
va_end(args);
}
}
/**
* i40e_add_stat_strings - copy stat strings into ethtool buffer
* @p: ethtool supplied buffer
* @stats: stat definitions array
*
* Format and copy the strings described by the const static stats value into
* the buffer pointed at by p.
*
* The parameter @stats is evaluated twice, so parameters with side effects
* should be avoided. Additionally, stats must be an array such that
* ARRAY_SIZE can be called on it.
**/
#define i40e_add_stat_strings(p, stats, ...) \
__i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
#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)
#define I40E_VEB_STAT(_name, _stat) \
I40E_STAT(struct i40e_veb, _name, _stat)
#define I40E_VEB_TC_STAT(_name, _stat) \
I40E_STAT(struct i40e_cp_veb_tc_stats, _name, _stat)
#define I40E_PFC_STAT(_name, _stat) \
I40E_STAT(struct i40e_pfc_stats, _name, _stat)
#define I40E_QUEUE_STAT(_name, _stat) \
I40E_STAT(struct i40e_ring, _name, _stat)
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),
};
static const struct i40e_stats i40e_gstrings_veb_stats[] = {
I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes),
I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes),
I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast),
I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast),
I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast),
I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast),
I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast),
I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast),
I40E_VEB_STAT("veb.rx_discards", stats.rx_discards),
I40E_VEB_STAT("veb.tx_discards", stats.tx_discards),
I40E_VEB_STAT("veb.tx_errors", stats.tx_errors),
I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
};
struct i40e_cp_veb_tc_stats {
u64 tc_rx_packets;
u64 tc_rx_bytes;
u64 tc_tx_packets;
u64 tc_tx_bytes;
};
static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
I40E_VEB_TC_STAT("veb.tc_%u_tx_packets", tc_tx_packets),
I40E_VEB_TC_STAT("veb.tc_%u_tx_bytes", tc_tx_bytes),
I40E_VEB_TC_STAT("veb.tc_%u_rx_packets", tc_rx_packets),
I40E_VEB_TC_STAT("veb.tc_%u_rx_bytes", tc_rx_bytes),
};
static const struct i40e_stats i40e_gstrings_misc_stats[] = {
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),
I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
I40E_VSI_STAT("tx_linearize", tx_linearize),
I40E_VSI_STAT("tx_force_wb", tx_force_wb),
I40E_VSI_STAT("tx_busy", tx_busy),
I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
};
/* 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.
*/
static const struct i40e_stats i40e_gstrings_stats[] = {
I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards),
I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
I40E_PF_STAT("port.arq_overflows", arq_overflows),
I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
/* LPI stats */
I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status),
I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status),
I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count),
I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count),
};
struct i40e_pfc_stats {
u64 priority_xon_rx;
u64 priority_xoff_rx;
u64 priority_xon_tx;
u64 priority_xoff_tx;
u64 priority_xon_2_xoff;
};
static const struct i40e_stats i40e_gstrings_pfc_stats[] = {
I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx),
I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx),
I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx),
I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx),
I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff),
};
#define I40E_NETDEV_STATS_LEN ARRAY_SIZE(i40e_gstrings_net_stats)
#define I40E_MISC_STATS_LEN ARRAY_SIZE(i40e_gstrings_misc_stats)
#define I40E_VSI_STATS_LEN (I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN)
#define I40E_PFC_STATS_LEN (ARRAY_SIZE(i40e_gstrings_pfc_stats) * \
I40E_MAX_USER_PRIORITY)
#define I40E_VEB_STATS_LEN (ARRAY_SIZE(i40e_gstrings_veb_stats) + \
(ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \
I40E_MAX_TRAFFIC_CLASS))
#define I40E_GLOBAL_STATS_LEN ARRAY_SIZE(i40e_gstrings_stats)
#define I40E_PF_STATS_LEN (I40E_GLOBAL_STATS_LEN + \
I40E_PFC_STATS_LEN + \
I40E_VEB_STATS_LEN + \
I40E_VSI_STATS_LEN)
/* Length of stats for a single queue */
#define I40E_QUEUE_STATS_LEN ARRAY_SIZE(i40e_gstrings_queue_stats)
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)
struct i40e_priv_flags {
char flag_string[ETH_GSTRING_LEN];
u64 flag;
bool read_only;
};
#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("total-port-shutdown",
I40E_FLAG_TOTAL_PORT_SHUTDOWN_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),
I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
I40E_PRIV_FLAG("link-down-on-close",
I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
I40E_PRIV_FLAG("disable-source-pruning",
I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0),
I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0),
};
#define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
/* Private flags with a global effect, restricted to PF 0 */
static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
I40E_PRIV_FLAG("vf-true-promisc-support",
I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
};
#define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
/**
* 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");
}
/**
* i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
* @pf: PF struct with phy_types
* @ks: ethtool link ksettings struct to fill out
*
**/
static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
struct ethtool_link_ksettings *ks)
{
struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
u64 phy_types = pf->hw.phy.phy_types;
ethtool_link_ksettings_zero_link_mode(ks, supported);
ethtool_link_ksettings_zero_link_mode(ks, advertising);
if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseT_Full);
if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
ethtool_link_ksettings_add_link_mode(ks, supported,
100baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
100baseT_Full);
}
}
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 ||
phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
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);
}
if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
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);
}
if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) {
ethtool_link_ksettings_add_link_mode(ks, supported,
2500baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
2500baseT_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) {
ethtool_link_ksettings_add_link_mode(ks, supported,
5000baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
5000baseT_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseCR4_Full);
if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseCR4_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseCR4_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
ethtool_link_ksettings_add_link_mode(ks, supported,
100baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
100baseT_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseT_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) {
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseSR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseSR4_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) {
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseLR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseLR4_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseKR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseKR4_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
ethtool_link_ksettings_add_link_mode(ks, supported,
20000baseKR2_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
20000baseKR2_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseKX4_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseKX4_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
!(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseKR_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseKR_Full);
}
if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
!(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseKX_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseKX_Full);
}
/* 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 ||
phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
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);
}
if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) {
ethtool_link_ksettings_add_link_mode(ks, advertising,
FEC_NONE);
ethtool_link_ksettings_add_link_mode(ks, advertising,
FEC_RS);
ethtool_link_ksettings_add_link_mode(ks, advertising,
FEC_BASER);
}
}
/* 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);
}
/* 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 ||
phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
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_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_10GBASE_T ||
phy_types & I40E_CAP_PHY_TYPE_5GBASE_T ||
phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T ||
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) {
ethtool_link_ksettings_add_link_mode(ks, supported,
Autoneg);
ethtool_link_ksettings_add_link_mode(ks, advertising,
Autoneg);
}
}
/**
* i40e_get_settings_link_up_fec - Get the FEC mode encoding from mask
* @req_fec_info: mask request FEC info
* @ks: ethtool ksettings to fill in
**/
static void i40e_get_settings_link_up_fec(u8 req_fec_info,
struct ethtool_link_ksettings *ks)
{
ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
if ((I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) &&
(I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info)) {
ethtool_link_ksettings_add_link_mode(ks, advertising,
FEC_NONE);
ethtool_link_ksettings_add_link_mode(ks, advertising,
FEC_BASER);
ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
} else if (I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) {
ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
} else if (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info) {
ethtool_link_ksettings_add_link_mode(ks, advertising,
FEC_BASER);
} else {
ethtool_link_ksettings_add_link_mode(ks, advertising,
FEC_NONE);
}
}
/**
* i40e_get_settings_link_up - Get the Link settings for when link is up
* @hw: hw structure
* @ks: ethtool ksettings to fill in
* @netdev: network interface device structure
* @pf: pointer to physical function struct
**/
static void i40e_get_settings_link_up(struct i40e_hw *hw,
struct ethtool_link_ksettings *ks,
struct net_device *netdev,
struct i40e_pf *pf)
{
struct i40e_link_status *hw_link_info = &hw->phy.link_info;
struct ethtool_link_ksettings cap_ksettings;
u32 link_speed = hw_link_info->link_speed;
/* Initialize supported and advertised settings based on phy settings */
switch (hw_link_info->phy_type) {
case I40E_PHY_TYPE_40GBASE_CR4:
case I40E_PHY_TYPE_40GBASE_CR4_CU:
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);
break;
case I40E_PHY_TYPE_XLAUI:
case I40E_PHY_TYPE_XLPPI:
case I40E_PHY_TYPE_40GBASE_AOC:
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseCR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseCR4_Full);
break;
case I40E_PHY_TYPE_40GBASE_SR4:
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseSR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseSR4_Full);
break;
case I40E_PHY_TYPE_40GBASE_LR4:
ethtool_link_ksettings_add_link_mode(ks, supported,
40000baseLR4_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
40000baseLR4_Full);
break;
case I40E_PHY_TYPE_25GBASE_SR:
case I40E_PHY_TYPE_25GBASE_LR:
case I40E_PHY_TYPE_10GBASE_SR:
case I40E_PHY_TYPE_10GBASE_LR:
case I40E_PHY_TYPE_1000BASE_SX:
case I40E_PHY_TYPE_1000BASE_LX:
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);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
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);
if (hw_link_info->module_type[2] &
I40E_MODULE_TYPE_1000BASE_SX ||
hw_link_info->module_type[2] &
I40E_MODULE_TYPE_1000BASE_LX) {
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseT_Full);
if (hw_link_info->requested_speeds &
I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(
ks, advertising, 1000baseT_Full);
}
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseT_Full);
break;
case I40E_PHY_TYPE_10GBASE_T:
case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS:
case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS:
case I40E_PHY_TYPE_1000BASE_T:
case I40E_PHY_TYPE_100BASE_TX:
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,
5000baseT_Full);
ethtool_link_ksettings_add_link_mode(ks, supported,
2500baseT_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);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
5000baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
2500baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
100baseT_Full);
break;
case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
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);
break;
case I40E_PHY_TYPE_10GBASE_CR1_CU:
case I40E_PHY_TYPE_10GBASE_CR1:
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);
break;
case I40E_PHY_TYPE_XAUI:
case I40E_PHY_TYPE_XFI:
case I40E_PHY_TYPE_SFI:
case I40E_PHY_TYPE_10GBASE_SFPP_CU:
case I40E_PHY_TYPE_10GBASE_AOC:
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);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
break;
case I40E_PHY_TYPE_SGMII:
ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(ks, supported,
1000baseT_Full);
if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
ethtool_link_ksettings_add_link_mode(ks, advertising,
1000baseT_Full);
if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
ethtool_link_ksettings_add_link_mode(ks, supported,
100baseT_Full);
if (hw_link_info->requested_speeds &
I40E_LINK_SPEED_100MB)
ethtool_link_ksettings_add_link_mode(
ks, advertising, 100baseT_Full);
}
break;
case I40E_PHY_TYPE_40GBASE_KR4:
case I40E_PHY_TYPE_25GBASE_KR:
case I40E_PHY_TYPE_20GBASE_KR2:
case I40E_PHY_TYPE_10GBASE_KR:
case I40E_PHY_TYPE_10GBASE_KX4:
case I40E_PHY_TYPE_1000BASE_KX:
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);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
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);
break;
case I40E_PHY_TYPE_25GBASE_CR:
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);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
break;
case I40E_PHY_TYPE_25GBASE_AOC:
case I40E_PHY_TYPE_25GBASE_ACC:
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);
i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
ethtool_link_ksettings_add_link_mode(ks, supported,
10000baseCR_Full);
ethtool_link_ksettings_add_link_mode(ks, advertising,
10000baseCR_Full);
break;
default:
/* if we got here and link is up something bad is afoot */
netdev_info(netdev,
"WARNING: Link is up but PHY type 0x%x is not recognized, or incorrect cable is in use\n",
hw_link_info->phy_type);
}
/* Now that we've worked out everything that could be supported by the
* current PHY type, get what is supported by the NVM and intersect
* them to get what is truly supported
*/
memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
i40e_phy_type_to_ethtool(pf, &cap_ksettings);
ethtool_intersect_link_masks(ks, &cap_ksettings);
/* Set speed and duplex */
switch (link_speed) {
case I40E_LINK_SPEED_40GB:
ks->base.speed = SPEED_40000;
break;
case I40E_LINK_SPEED_25GB:
ks->base.speed = SPEED_25000;
break;
case I40E_LINK_SPEED_20GB:
ks->base.speed = SPEED_20000;
break;
case I40E_LINK_SPEED_10GB:
ks->base.speed = SPEED_10000;
break;
case I40E_LINK_SPEED_5GB:
ks->base.speed = SPEED_5000;
break;
case I40E_LINK_SPEED_2_5GB:
ks->base.speed = SPEED_2500;
break;
case I40E_LINK_SPEED_1GB:
ks->base.speed = SPEED_1000;
break;
case I40E_LINK_SPEED_100MB:
ks->base.speed = SPEED_100;
break;
default:
ks->base.speed = SPEED_UNKNOWN;
break;
}
ks->base.duplex = DUPLEX_FULL;
}
/**
* i40e_get_settings_link_down - Get the Link settings for when link is down
* @hw: hw structure
* @ks: ethtool ksettings to fill in
* @pf: pointer to physical function struct
*
* Reports link settings that can be determined when link is down
**/
static void i40e_get_settings_link_down(struct i40e_hw *hw,
struct ethtool_link_ksettings *ks,
struct i40e_pf *pf)
{
/* link is down and the driver needs to fall back on
* supported phy types to figure out what info to display
*/
i40e_phy_type_to_ethtool(pf, ks);
/* With no link speed and duplex are unknown */
ks->base.speed = SPEED_UNKNOWN;
ks->base.duplex = DUPLEX_UNKNOWN;
}
/**
* i40e_get_link_ksettings - Get Link Speed and Duplex settings
* @netdev: network interface device structure
* @ks: ethtool ksettings
*
* Reports speed/duplex settings based on media_type
**/
static int i40e_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *ks)
{
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;
ethtool_link_ksettings_zero_link_mode(ks, supported);
ethtool_link_ksettings_zero_link_mode(ks, advertising);
if (link_up)
i40e_get_settings_link_up(hw, ks, netdev, pf);
else
i40e_get_settings_link_down(hw, ks, pf);
/* Now set the settings that don't rely on link being up/down */
/* Set autoneg settings */
ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
AUTONEG_ENABLE : AUTONEG_DISABLE);
/* Set media type settings */
switch (hw->phy.media_type) {
case I40E_MEDIA_TYPE_BACKPLANE:
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);
ethtool_link_ksettings_add_link_mode(ks, advertising,
Backplane);
ks->base.port = PORT_NONE;
break;
case I40E_MEDIA_TYPE_BASET:
ethtool_link_ksettings_add_link_mode(ks, supported, TP);
ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
ks->base.port = PORT_TP;
break;
case I40E_MEDIA_TYPE_DA:
case I40E_MEDIA_TYPE_CX4:
ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
ks->base.port = PORT_DA;
break;
case I40E_MEDIA_TYPE_FIBER:
ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
ks->base.port = PORT_FIBRE;
break;
case I40E_MEDIA_TYPE_UNKNOWN:
default:
ks->base.port = PORT_OTHER;
break;
}
/* Set flow control settings */
ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
ethtool_link_ksettings_add_link_mode(ks, supported, Asym_Pause);
switch (hw->fc.requested_mode) {
case I40E_FC_FULL:
ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
break;
case I40E_FC_TX_PAUSE:
ethtool_link_ksettings_add_link_mode(ks, advertising,
Asym_Pause);
break;
case I40E_FC_RX_PAUSE:
ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
ethtool_link_ksettings_add_link_mode(ks, advertising,
Asym_Pause);
break;
default:
ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
ethtool_link_ksettings_del_link_mode(ks, advertising,
Asym_Pause);
break;
}
return 0;
}
/**
* i40e_set_link_ksettings - Set Speed and Duplex
* @netdev: network interface device structure
* @ks: ethtool ksettings
*
* Set speed/duplex per media_types advertised/forced
**/
static int i40e_set_link_ksettings(struct net_device *netdev,
const struct ethtool_link_ksettings *ks)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_aq_get_phy_abilities_resp abilities;
struct ethtool_link_ksettings safe_ks;
struct ethtool_link_ksettings copy_ks;
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;
bool autoneg_changed = false;
i40e_status status = 0;
int timeout = 50;
int err = 0;
u8 autoneg;
/* 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;
}
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 &&
hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
return -EOPNOTSUPP;
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 ||
hw->device_id == I40E_DEV_ID_20G_KR2_A ||
hw->device_id == I40E_DEV_ID_25G_B ||
hw->device_id == I40E_DEV_ID_KX_X722) {
netdev_info(netdev, "Changing settings is not supported on backplane.\n");
return -EOPNOTSUPP;
}
/* copy the ksettings to copy_ks to avoid modifying the origin */
memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
/* save autoneg out of ksettings */
autoneg = copy_ks.base.autoneg;
/* 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);
/* 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;
/* set autoneg back to what it currently is */
copy_ks.base.autoneg = safe_ks.base.autoneg;
/* 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.
*/
if (memcmp(&copy_ks.base, &safe_ks.base,
sizeof(struct ethtool_link_settings)))
return -EOPNOTSUPP;
while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
timeout--;
if (!timeout)
return -EBUSY;
usleep_range(1000, 2000);
}
/* Get the current phy config */
status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
NULL);
if (status) {
err = -EAGAIN;
goto done;
}
/* Copy abilities to config in case autoneg is not
* 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)) {
/* If autoneg is not supported, return error */
if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
supported,
Autoneg)) {
netdev_info(netdev, "Autoneg not supported on this phy\n");
err = -EINVAL;
goto done;
}
/* Autoneg is allowed to change */
config.abilities = abilities.abilities |
I40E_AQ_PHY_ENABLE_AN;
autoneg_changed = true;
}
} else {
/* If autoneg is currently enabled */
if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
/* If autoneg is supported 10GBASE_T is the only PHY
* that can disable it, so otherwise return error
*/
if (ethtool_link_ksettings_test_link_mode(&safe_ks,
supported,
Autoneg) &&
hw->phy.media_type != I40E_MEDIA_TYPE_BASET) {
netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
err = -EINVAL;
goto done;
}
/* Autoneg is allowed to change */
config.abilities = abilities.abilities &
~I40E_AQ_PHY_ENABLE_AN;
autoneg_changed = true;
}
}
if (ethtool_link_ksettings_test_link_mode(ks, advertising,
100baseT_Full))
config.link_speed |= I40E_LINK_SPEED_100MB;
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))
config.link_speed |= I40E_LINK_SPEED_1GB;
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,
10000baseSR_Full) ||
ethtool_link_ksettings_test_link_mode(ks, advertising,
10000baseLR_Full))
config.link_speed |= I40E_LINK_SPEED_10GB;
if (ethtool_link_ksettings_test_link_mode(ks, advertising,
2500baseT_Full))
config.link_speed |= I40E_LINK_SPEED_2_5GB;
if (ethtool_link_ksettings_test_link_mode(ks, advertising,
5000baseT_Full))
config.link_speed |= I40E_LINK_SPEED_5GB;
if (ethtool_link_ksettings_test_link_mode(ks, advertising,
20000baseKR2_Full))
config.link_speed |= I40E_LINK_SPEED_20GB;
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))
config.link_speed |= I40E_LINK_SPEED_40GB;
/* 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;
if (autoneg_changed || abilities.link_speed != config.link_speed) {
/* copy over the rest of the abilities */
config.phy_type = abilities.phy_type;
config.phy_type_ext = abilities.phy_type_ext;
config.eee_capability = abilities.eee_capability;
config.eeer = abilities.eeer_val;
config.low_power_ctrl = abilities.d3_lpan;
config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
I40E_AQ_PHY_FEC_CONFIG_MASK;
/* save the requested speeds */
hw->phy.link_info.requested_speeds = config.link_speed;
/* 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
*/
i40e_print_link_message(vsi, false);
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
}
/* make the aq call */
status = i40e_aq_set_phy_config(hw, &config, NULL);
if (status) {
netdev_info(netdev,
"Set phy config failed, err %s aq_err %s\n",
i40e_stat_str(hw, status),
i40e_aq_str(hw, hw->aq.asq_last_status));
err = -EAGAIN;
goto done;
}
status = i40e_update_link_info(hw);
if (status)
netdev_dbg(netdev,
"Updating link info failed with err %s aq_err %s\n",
i40e_stat_str(hw, status),
i40e_aq_str(hw, hw->aq.asq_last_status));
} else {
netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
}
done:
clear_bit(__I40E_CONFIG_BUSY, pf->state);
return err;
}
static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_aq_get_phy_abilities_resp abilities;
struct i40e_pf *pf = np->vsi->back;
struct i40e_hw *hw = &pf->hw;
i40e_status status = 0;
u32 flags = 0;
int err = 0;
flags = READ_ONCE(pf->flags);
i40e_set_fec_in_flags(fec_cfg, &flags);
/* Get the current phy config */
memset(&abilities, 0, sizeof(abilities));
status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
NULL);
if (status) {
err = -EAGAIN;
goto done;
}
if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) {
struct i40e_aq_set_phy_config config;
memset(&config, 0, sizeof(config));
config.phy_type = abilities.phy_type;
config.abilities = abilities.abilities |
I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
config.phy_type_ext = abilities.phy_type_ext;
config.link_speed = abilities.link_speed;
config.eee_capability = abilities.eee_capability;
config.eeer = abilities.eeer_val;
config.low_power_ctrl = abilities.d3_lpan;
config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK;
status = i40e_aq_set_phy_config(hw, &config, NULL);
if (status) {
netdev_info(netdev,
"Set phy config failed, err %s aq_err %s\n",
i40e_stat_str(hw, status),
i40e_aq_str(hw, hw->aq.asq_last_status));
err = -EAGAIN;
goto done;
}
pf->flags = flags;
status = i40e_update_link_info(hw);
if (status)
/* debug level message only due to relation to the link
* itself rather than to the FEC settings
* (e.g. no physical connection etc.)
*/
netdev_dbg(netdev,
"Updating link info failed with err %s aq_err %s\n",
i40e_stat_str(hw, status),
i40e_aq_str(hw, hw->aq.asq_last_status));
}
done:
return err;
}
static int i40e_get_fec_param(struct net_device *netdev,
struct ethtool_fecparam *fecparam)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_aq_get_phy_abilities_resp abilities;
struct i40e_pf *pf = np->vsi->back;
struct i40e_hw *hw = &pf->hw;
i40e_status status = 0;
int err = 0;
u8 fec_cfg;
/* Get the current phy config */
memset(&abilities, 0, sizeof(abilities));
status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
NULL);
if (status) {
err = -EAGAIN;
goto done;
}
fecparam->fec = 0;
fec_cfg = abilities.fec_cfg_curr_mod_ext_info;
if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
fecparam->fec |= ETHTOOL_FEC_AUTO;
else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_RS |
I40E_AQ_SET_FEC_ABILITY_RS))
fecparam->fec |= ETHTOOL_FEC_RS;
else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_KR |
I40E_AQ_SET_FEC_ABILITY_KR))
fecparam->fec |= ETHTOOL_FEC_BASER;
if (fec_cfg == 0)
fecparam->fec |= ETHTOOL_FEC_OFF;
if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA)
fecparam->active_fec = ETHTOOL_FEC_BASER;
else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA)
fecparam->active_fec = ETHTOOL_FEC_RS;
else
fecparam->active_fec = ETHTOOL_FEC_OFF;
done:
return err;
}
static int i40e_set_fec_param(struct net_device *netdev,
struct ethtool_fecparam *fecparam)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
struct i40e_hw *hw = &pf->hw;
u8 fec_cfg = 0;
if (hw->device_id != I40E_DEV_ID_25G_SFP28 &&
hw->device_id != I40E_DEV_ID_25G_B &&
hw->device_id != I40E_DEV_ID_KX_X722)
return -EPERM;
if (hw->mac.type == I40E_MAC_X722 &&
!(hw->flags & I40E_HW_FLAG_X722_FEC_REQUEST_CAPABLE)) {
netdev_err(netdev, "Setting FEC encoding not supported by firmware. Please update the NVM image.\n");
return -EOPNOTSUPP;
}
switch (fecparam->fec) {
case ETHTOOL_FEC_AUTO:
fec_cfg = I40E_AQ_SET_FEC_AUTO;
break;
case ETHTOOL_FEC_RS:
fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
I40E_AQ_SET_FEC_ABILITY_RS);
break;
case ETHTOOL_FEC_BASER:
fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
I40E_AQ_SET_FEC_ABILITY_KR);
break;
case ETHTOOL_FEC_OFF:
case ETHTOOL_FEC_NONE:
fec_cfg = 0;
break;
default:
dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d",
fecparam->fec);
return -EINVAL;
}
return i40e_set_fec_cfg(netdev, fec_cfg);
}
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) {
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));
return -EIO;
}
return 0;
}
/**
* i40e_get_pauseparam - Get Flow Control status
* @netdev: netdevice structure
* @pause: buffer to return pause parameters
*
* 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;
struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
pause->autoneg =
((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
AUTONEG_ENABLE : AUTONEG_DISABLE);
/* PFC enabled so report LFC as off */
if (dcbx_cfg->pfc.pfcenable) {
pause->rx_pause = 0;
pause->tx_pause = 0;
return;
}
if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
pause->rx_pause = 1;
} else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
pause->tx_pause = 1;
} else if (hw->fc.current_mode == I40E_FC_FULL) {
pause->rx_pause = 1;
pause->tx_pause = 1;
}
}
/**
* 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;
struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
i40e_status status;
u8 aq_failures;
int err = 0;
u32 is_an;
/* 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;
}
if (vsi != pf->vsi[pf->lan_vsi])
return -EOPNOTSUPP;
is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
if (pause->autoneg != is_an) {
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 */
if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
/* 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");
}
if (dcbx_cfg->pfc.pfcenable) {
netdev_info(netdev,
"Priority flow control enabled. Cannot set link flow control.\n");
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;
/* Tell the OS link is going down, the link will go back up when fw
* says it is ready asynchronously
*/
i40e_print_link_message(vsi, false);
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
/* 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) {
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));
err = -EAGAIN;
}
if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
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));
err = -EAGAIN;
}
if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
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));
err = -EAGAIN;
}
if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
/* Give it a little more time to try to come back */
msleep(75);
if (!test_bit(__I40E_DOWN, pf->state))
return i40e_nway_reset(netdev);
}
return err;
}
static u32 i40e_get_msglevel(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
u32 debug_mask = pf->hw.debug_mask;
if (debug_mask)
netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
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;
else
pf->msg_enable = data;
}
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;
unsigned int i, j, ri;
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;
struct i40e_pf *pf = np->vsi->back;
int ret_val = 0, len, offset;
u8 *eeprom_buff;
u16 i, sectors;
bool last;
u32 magic;
#define I40E_NVM_SECTOR_SIZE 4096
if (eeprom->len == 0)
return -EINVAL;
/* check for NVMUpdate access method */
magic = hw->vendor_id | (hw->device_id << 16);
if (eeprom->magic && eeprom->magic != magic) {
struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
int errno = 0;
/* make sure it is the right magic for NVMUpdate */
if ((eeprom->magic >> 16) != hw->device_id)
errno = -EINVAL;
else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
errno = -EBUSY;
else
ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
dev_info(&pf->pdev->dev,
"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);
return errno;
}
/* normal ethtool get_eeprom support */
eeprom->magic = hw->vendor_id | (hw->device_id << 16);
eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
if (!eeprom_buff)
return -ENOMEM;
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;
}
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;
}
offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
(u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
last, NULL);
if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
dev_info(&pf->pdev->dev,
"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;
}
}
i40e_release_nvm(hw);
memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
free_buff:
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;
u32 val;
#define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
if (hw->mac.type == I40E_MAC_X722) {
val = X722_EEPROM_SCOPE_LIMIT + 1;
return val;
}
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. */
val = (64 * 1024) * BIT(val);
return val;
}
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;
struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
int ret_val = 0;
int errno = 0;
u32 magic;
/* normal ethtool set_eeprom is not supported */
magic = hw->vendor_id | (hw->device_id << 16);
if (eeprom->magic == magic)
errno = -EOPNOTSUPP;
/* check for NVMUpdate access method */
else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
errno = -EINVAL;
else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
errno = -EBUSY;
else
ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
dev_info(&pf->pdev->dev,
"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);
return errno;
}
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->fw_version, i40e_nvm_version_str(&pf->hw),
sizeof(drvinfo->fw_version));
strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
sizeof(drvinfo->bus_info));
drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
if (pf->hw.pf_id == 0)
drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
}
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;
ring->rx_pending = vsi->rx_rings[0]->count;
ring->tx_pending = vsi->tx_rings[0]->count;
ring->rx_mini_pending = 0;
ring->rx_jumbo_pending = 0;
}
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;
}
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);
struct i40e_hw *hw = &np->vsi->back->hw;
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u32 new_rx_count, new_tx_count;
u16 tx_alloc_queue_pairs;
int timeout = 50;
int i, err = 0;
if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
return -EINVAL;
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);
/* if nothing to do return success */
if ((new_tx_count == vsi->tx_rings[0]->count) &&
(new_rx_count == vsi->rx_rings[0]->count))
return 0;
/* If there is a AF_XDP page pool attached to any of Rx rings,
* disallow changing the number of descriptors -- regardless
* if the netdev is running or not.
*/
if (i40e_xsk_any_rx_ring_enabled(vsi))
return -EBUSY;
while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
timeout--;
if (!timeout)
return -EBUSY;
usleep_range(1000, 2000);
}
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++) {
vsi->tx_rings[i]->count = new_tx_count;
vsi->rx_rings[i]->count = new_rx_count;
if (i40e_enabled_xdp_vsi(vsi))
vsi->xdp_rings[i]->count = new_tx_count;
}
vsi->num_tx_desc = new_tx_count;
vsi->num_rx_desc = new_rx_count;
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.
*/
/* alloc updated Tx and XDP Tx resources */
tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
(i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
if (new_tx_count != vsi->tx_rings[0]->count) {
netdev_info(netdev,
"Changing Tx descriptor count from %d to %d.\n",
vsi->tx_rings[0]->count, new_tx_count);
tx_rings = kcalloc(tx_alloc_queue_pairs,
sizeof(struct i40e_ring), GFP_KERNEL);
if (!tx_rings) {
err = -ENOMEM;
goto done;
}
for (i = 0; i < tx_alloc_queue_pairs; i++) {
if (!i40e_active_tx_ring_index(vsi, i))
continue;
tx_rings[i] = *vsi->tx_rings[i];
tx_rings[i].count = new_tx_count;
/* the desc and bi pointers will be reallocated in the
* setup call
*/
tx_rings[i].desc = NULL;
tx_rings[i].rx_bi = NULL;
err = i40e_setup_tx_descriptors(&tx_rings[i]);
if (err) {
while (i) {
i--;
if (!i40e_active_tx_ring_index(vsi, i))
continue;
i40e_free_tx_resources(&tx_rings[i]);
}
kfree(tx_rings);
tx_rings = NULL;
goto done;
}
}
}
/* alloc updated Rx resources */
if (new_rx_count != vsi->rx_rings[0]->count) {
netdev_info(netdev,
"Changing Rx descriptor count from %d to %d\n",
vsi->rx_rings[0]->count, new_rx_count);
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++) {
u16 unused;
/* clone ring and setup updated count */
rx_rings[i] = *vsi->rx_rings[i];
rx_rings[i].count = new_rx_count;
/* the desc and bi pointers will be reallocated in the
* setup call
*/
rx_rings[i].desc = NULL;
rx_rings[i].rx_bi = NULL;
/* Clear cloned XDP RX-queue info before setup call */
memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
/* 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;
err = i40e_setup_rx_descriptors(&rx_rings[i]);
if (err)
goto rx_unwind;
err = i40e_alloc_rx_bi(&rx_rings[i]);
if (err)
goto rx_unwind;
/* now allocate the Rx buffers to make sure the OS
* has enough memory, any failure here means abort
*/
unused = I40E_DESC_UNUSED(&rx_rings[i]);
err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
rx_unwind:
if (err) {
do {
i40e_free_rx_resources(&rx_rings[i]);
} while (i--);
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) {
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];
}
}
kfree(tx_rings);
tx_rings = NULL;
}
if (rx_rings) {
for (i = 0; i < vsi->num_queue_pairs; i++) {
i40e_free_rx_resources(vsi->rx_rings[i]);
/* 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 */
*vsi->rx_rings[i] = rx_rings[i];
}
kfree(rx_rings);
rx_rings = NULL;
}
vsi->num_tx_desc = new_tx_count;
vsi->num_rx_desc = new_rx_count;
i40e_up(vsi);
free_tx:
/* error cleanup if the Rx allocations failed after getting Tx */
if (tx_rings) {
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]);
}
kfree(tx_rings);
tx_rings = NULL;
}
done:
clear_bit(__I40E_CONFIG_BUSY, pf->state);
return err;
}
/**
* i40e_get_stats_count - return the stats count for a device
* @netdev: the netdev to return the count for
*
* Returns the total number of statistics for this netdev. Note that even
* though this is a function, it is required that the count for a specific
* netdev must never change. Basing the count on static values such as the
* maximum number of queues or the device type is ok. However, the API for
* obtaining stats is *not* safe against changes based on non-static
* values such as the *current* number of queues, or runtime flags.
*
* If a statistic is not always enabled, return it as part of the count
* anyways, always return its string, and report its value as zero.
**/
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;
int stats_len;
if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1)
stats_len = I40E_PF_STATS_LEN;
else
stats_len = I40E_VSI_STATS_LEN;
/* The number of stats reported for a given net_device must remain
* constant throughout the life of that device.
*
* This is because the API for obtaining the size, strings, and stats
* is spread out over three separate ethtool ioctls. There is no safe
* way to lock the number of stats across these calls, so we must
* assume that they will never change.
*
* Due to this, we report the maximum number of queues, even if not
* every queue is currently configured. Since we always allocate
* queues in pairs, we'll just use netdev->num_tx_queues * 2. This
* works because the num_tx_queues is set at device creation and never
* changes.
*/
stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
return stats_len;
}
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:
return i40e_get_stats_count(netdev);
case ETH_SS_PRIV_FLAGS:
return I40E_PRIV_FLAGS_STR_LEN +
(pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
default:
return -EOPNOTSUPP;
}
}
/**
* i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure
* @tc: the TC statistics in VEB structure (veb->tc_stats)
* @i: the index of traffic class in (veb->tc_stats) structure to copy
*
* Copy VEB TC statistics from structure of arrays (veb->tc_stats) to
* one dimensional structure i40e_cp_veb_tc_stats.
* Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC
* statistics for the given TC.
**/
static struct i40e_cp_veb_tc_stats
i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsigned int i)
{
struct i40e_cp_veb_tc_stats veb_tc = {
.tc_rx_packets = tc->tc_rx_packets[i],
.tc_rx_bytes = tc->tc_rx_bytes[i],
.tc_tx_packets = tc->tc_tx_packets[i],
.tc_tx_bytes = tc->tc_tx_bytes[i],
};
return veb_tc;
}
/**
* i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
* @pf: the PF device structure
* @i: the priority value to copy
*
* The PFC stats are found as arrays in pf->stats, which is not easy to pass
* into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure
* of the PFC stats for the given priority.
**/
static inline struct i40e_pfc_stats
i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i)
{
#define I40E_GET_PFC_STAT(stat, priority) \
.stat = pf->stats.stat[priority]
struct i40e_pfc_stats pfc = {
I40E_GET_PFC_STAT(priority_xon_rx, i),
I40E_GET_PFC_STAT(priority_xoff_rx, i),
I40E_GET_PFC_STAT(priority_xon_tx, i),
I40E_GET_PFC_STAT(priority_xoff_tx, i),
I40E_GET_PFC_STAT(priority_xon_2_xoff, i),
};
return pfc;
}
/**
* i40e_get_ethtool_stats - copy stat values into supplied buffer
* @netdev: the netdev to collect stats for
* @stats: ethtool stats command structure
* @data: ethtool supplied buffer
*
* Copy the stats values for this netdev into the buffer. Expects data to be
* pre-allocated to the size returned by i40e_get_stats_count.. Note that all
* statistics must be copied in a static order, and the count must not change
* for a given netdev. See i40e_get_stats_count for more details.
*
* If a statistic is not currently valid (such as a disabled queue), this
* function reports its value as zero.
**/
static void i40e_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *data)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_veb *veb = NULL;
unsigned int i;
bool veb_stats;
u64 *p = data;
i40e_update_stats(vsi);
i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi),
i40e_gstrings_net_stats);
i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats);
rcu_read_lock();
for (i = 0; i < netdev->num_tx_queues; i++) {
i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i]));
i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i]));
}
rcu_read_unlock();
if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
goto check_data_pointer;
veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
(pf->lan_veb < I40E_MAX_VEB) &&
(pf->flags & I40E_FLAG_VEB_STATS_ENABLED));
if (veb_stats) {
veb = pf->veb[pf->lan_veb];
i40e_update_veb_stats(veb);
}
/* If veb stats aren't enabled, pass NULL instead of the veb so that
* we initialize stats to zero and update the data pointer
* intelligently
*/
i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
i40e_gstrings_veb_stats);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
if (veb_stats) {
struct i40e_cp_veb_tc_stats veb_tc =
i40e_get_veb_tc_stats(&veb->tc_stats, i);
i40e_add_ethtool_stats(&data, &veb_tc,
i40e_gstrings_veb_tc_stats);
} else {
i40e_add_ethtool_stats(&data, NULL,
i40e_gstrings_veb_tc_stats);
}
i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i);
i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats);
}
check_data_pointer:
WARN_ONCE(data - p != i40e_get_stats_count(netdev),
"ethtool stats count mismatch!");
}
/**
* i40e_get_stat_strings - copy stat strings into supplied buffer
* @netdev: the netdev to collect strings for
* @data: supplied buffer to copy strings into
*
* Copy the strings related to stats for this netdev. Expects data to be
* pre-allocated with the size reported by i40e_get_stats_count. Note that the
* strings must be copied in a static order and the total count must not
* change for a given netdev. See i40e_get_stats_count for more details.
**/
static void i40e_get_stat_strings(struct net_device *netdev, u8 *data)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
unsigned int i;
u8 *p = data;
i40e_add_stat_strings(&data, i40e_gstrings_net_stats);
i40e_add_stat_strings(&data, i40e_gstrings_misc_stats);
for (i = 0; i < netdev->num_tx_queues; i++) {
i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
"tx", i);
i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
"rx", i);
}
if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
goto check_data_pointer;
i40e_add_stat_strings(&data, i40e_gstrings_veb_stats);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i);
i40e_add_stat_strings(&data, i40e_gstrings_stats);
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i);
check_data_pointer:
WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN,
"stat strings count mismatch!");
}
static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
unsigned int i;
u8 *p = data;
for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++)
ethtool_sprintf(&p, i40e_gstrings_priv_flags[i].flag_string);
if (pf->hw.pf_id != 0)
return;
for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++)
ethtool_sprintf(&p, i40e_gl_gstrings_priv_flags[i].flag_string);
}
static void i40e_get_strings(struct net_device *netdev, u32 stringset,
u8 *data)
{
switch (stringset) {
case ETH_SS_TEST:
memcpy(data, i40e_gstrings_test,
I40E_TEST_LEN * ETH_GSTRING_LEN);
break;
case ETH_SS_STATS:
i40e_get_stat_strings(netdev, data);
break;
case ETH_SS_PRIV_FLAGS:
i40e_get_priv_flag_strings(netdev, data);
break;
default:
break;
}
}
static int i40e_get_ts_info(struct net_device *dev,
struct ethtool_ts_info *info)
{
struct i40e_pf *pf = i40e_netdev_to_pf(dev);
/* only report HW timestamping if PTP is enabled */
if (!(pf->flags & I40E_FLAG_PTP))
return ethtool_op_get_ts_info(dev, info);
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;
info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
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);
return 0;
}
static u64 i40e_link_test(struct net_device *netdev, u64 *data)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
i40e_status status;
bool link_up = false;
netif_info(pf, hw, netdev, "link test\n");
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)
*data = 0;
else
*data = 1;
return *data;
}
static u64 i40e_reg_test(struct net_device *netdev, u64 *data)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
netif_info(pf, hw, netdev, "register test\n");
*data = i40e_diag_reg_test(&pf->hw);
return *data;
}
static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
netif_info(pf, hw, netdev, "eeprom test\n");
*data = i40e_diag_eeprom_test(&pf->hw);
/* forcebly clear the NVM Update state machine */
pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
return *data;
}
static u64 i40e_intr_test(struct net_device *netdev, u64 *data)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
u16 swc_old = pf->sw_int_count;
netif_info(pf, hw, netdev, "interrupt test\n");
wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
(I40E_PFINT_DYN_CTL0_INTENA_MASK |
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));
usleep_range(1000, 2000);
*data = (swc_old == pf->sw_int_count);
return *data;
}
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++)
if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
return true;
return false;
}
static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
{
return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
}
static void i40e_diag_test(struct net_device *netdev,
struct ethtool_test *eth_test, u64 *data)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
bool if_running = netif_running(netdev);
struct i40e_pf *pf = np->vsi->back;
if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
/* Offline tests */
netif_info(pf, drv, netdev, "offline testing starting\n");
set_bit(__I40E_TESTING, pf->state);
if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
dev_warn(&pf->pdev->dev,
"Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
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;
clear_bit(__I40E_TESTING, pf->state);
goto skip_ol_tests;
}
/* If the device is online then take it offline */
if (if_running)
/* indicate we're in test mode */
i40e_close(netdev);
else
/* 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
*/
i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
eth_test->flags |= ETH_TEST_FL_FAILED;
if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
eth_test->flags |= ETH_TEST_FL_FAILED;
if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
eth_test->flags |= ETH_TEST_FL_FAILED;
/* 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;
clear_bit(__I40E_TESTING, pf->state);
i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
if (if_running)
i40e_open(netdev);
} else {
/* Online tests */
netif_info(pf, drv, netdev, "online testing starting\n");
if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
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;
}
skip_ol_tests:
netif_info(pf, drv, netdev, "testing finished\n");
}
static void i40e_get_wol(struct net_device *netdev,
struct ethtool_wolinfo *wol)
{
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);
if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
wol->supported = 0;
wol->wolopts = 0;
} else {
wol->supported = WAKE_MAGIC;
wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
}
}
/**
* i40e_set_wol - set the WakeOnLAN configuration
* @netdev: the netdev in question
* @wol: the ethtool WoL setting data
**/
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;
struct i40e_vsi *vsi = np->vsi;
struct i40e_hw *hw = &pf->hw;
u16 wol_nvm_bits;
/* 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;
/* NVM bit on means WoL disabled for the port */
i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
if (BIT(hw->port) & wol_nvm_bits)
return -EOPNOTSUPP;
/* only magic packet is supported */
if (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);
}
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);
i40e_status ret = 0;
struct i40e_pf *pf = np->vsi->back;
struct i40e_hw *hw = &pf->hw;
int blink_freq = 2;
u16 temp_status;
switch (state) {
case ETHTOOL_ID_ACTIVE:
if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
pf->led_status = i40e_led_get(hw);
} else {
if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
NULL);
ret = i40e_led_get_phy(hw, &temp_status,
&pf->phy_led_val);
pf->led_status = temp_status;
}
return blink_freq;
case ETHTOOL_ID_ON:
if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
i40e_led_set(hw, 0xf, false);
else
ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
break;
case ETHTOOL_ID_OFF:
if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
i40e_led_set(hw, 0x0, false);
else
ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
break;
case ETHTOOL_ID_INACTIVE:
if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
i40e_led_set(hw, pf->led_status, false);
} else {
ret = i40e_led_set_phy(hw, false, pf->led_status,
(pf->phy_led_val |
I40E_PHY_LED_MODE_ORIG));
if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
i40e_aq_set_phy_debug(hw, 0, NULL);
}
break;
default:
break;
}
if (ret)
return -ENOENT;
else
return 0;
}
/* 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)
*/
/**
* __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.
**/
static int __i40e_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec,
int queue)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_ring *rx_ring, *tx_ring;
struct i40e_vsi *vsi = np->vsi;
ec->tx_max_coalesced_frames_irq = vsi->work_limit;
ec->rx_max_coalesced_frames_irq = vsi->work_limit;
/* rx and tx usecs has per queue value. If user doesn't specify the
* queue, return queue 0's value to represent.
*/
if (queue < 0)
queue = 0;
else if (queue >= vsi->num_queue_pairs)
return -EINVAL;
rx_ring = vsi->rx_rings[queue];
tx_ring = vsi->tx_rings[queue];
if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
ec->use_adaptive_rx_coalesce = 1;
if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
ec->use_adaptive_tx_coalesce = 1;
ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
/* 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;
return 0;
}
/**
* i40e_get_coalesce - get a netdev's coalesce settings
* @netdev: the netdev to check
* @ec: ethtool coalesce data structure
* @kernel_coal: ethtool CQE mode setting structure
* @extack: extack for reporting error messages
*
* 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.
**/
static int i40e_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
return __i40e_get_coalesce(netdev, ec, -1);
}
/**
* 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
**/
static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
struct ethtool_coalesce *ec)
{
return __i40e_get_coalesce(netdev, ec, queue);
}
/**
* 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.
**/
static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
struct ethtool_coalesce *ec,
int queue)
{
struct i40e_ring *rx_ring = vsi->rx_rings[queue];
struct i40e_ring *tx_ring = vsi->tx_rings[queue];
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_q_vector *q_vector;
u16 intrl;
intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
if (ec->use_adaptive_rx_coalesce)
rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
else
rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
if (ec->use_adaptive_tx_coalesce)
tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
else
tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
q_vector = rx_ring->q_vector;
q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
q_vector = tx_ring->q_vector;
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.
*/
wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
i40e_flush(hw);
}
/**
* __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.
**/
static int __i40e_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec,
int queue)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
u16 intrl_reg, cur_rx_itr, cur_tx_itr;
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;
if (queue < 0) {
cur_rx_itr = vsi->rx_rings[0]->itr_setting;
cur_tx_itr = vsi->tx_rings[0]->itr_setting;
} else if (queue < vsi->num_queue_pairs) {
cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
} 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;
/* 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;
}
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));
return -EINVAL;
}
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;
}
if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
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;
}
if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
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)
ec->rx_coalesce_usecs = I40E_MIN_ITR;
if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
ec->tx_coalesce_usecs = I40E_MIN_ITR;
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);
}
/* rx and tx usecs has per queue value. If user doesn't specify the
* queue, apply to all queues.
*/
if (queue < 0) {
for (i = 0; i < vsi->num_queue_pairs; i++)
i40e_set_itr_per_queue(vsi, ec, i);
} else {
i40e_set_itr_per_queue(vsi, ec, queue);
}
return 0;
}
/**
* i40e_set_coalesce - set coalesce settings for every queue on the netdev
* @netdev: the netdev to change
* @ec: ethtool coalesce settings
* @kernel_coal: ethtool CQE mode setting structure
* @extack: extack for reporting error messages
*
* This will set each queue to the same coalesce settings.
**/
static int i40e_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
return __i40e_set_coalesce(netdev, ec, -1);
}
/**
* 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.
**/
static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
struct ethtool_coalesce *ec)
{
return __i40e_set_coalesce(netdev, ec, queue);
}
/**
* 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)
{
struct i40e_hw *hw = &pf->hw;
u8 flow_pctype = 0;
u64 i_set = 0;
cmd->data = 0;
switch (cmd->flow_type) {
case TCP_V4_FLOW:
flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
break;
case UDP_V4_FLOW:
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;
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:
/* Default is src/dest for IP, no matter the L4 hashing */
cmd->data |= RXH_IP_SRC | RXH_IP_DST;
break;
default:
return -EINVAL;
}
/* 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;
}
}
return 0;
}
/**
* i40e_check_mask - Check whether a mask field is set
* @mask: the full mask value
* @field: mask of the field to check
*
* 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
* @data: pointer to return userdef data
*
* 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);
}
/**
* 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 */
cmd->data = i40e_get_fd_cnt_all(pf);
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;
struct i40e_rx_flow_userdef userdef = {0};
struct i40e_fdir_filter *rule = NULL;
struct hlist_node *node2;
u64 input_set;
u16 index;
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;
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;
}
if (fsp->flow_type == IPV6_USER_FLOW ||
fsp->flow_type == UDP_V6_FLOW ||
fsp->flow_type == TCP_V6_FLOW ||
fsp->flow_type == SCTP_V6_FLOW) {
/* 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_ip6_spec.psrc = rule->dst_port;
fsp->h_u.tcp_ip6_spec.pdst = rule->src_port;
memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->src_ip6,
sizeof(__be32) * 4);
memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->dst_ip6,
sizeof(__be32) * 4);
} else {
/* 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;
fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
}
switch (rule->flow_type) {
case SCTP_V4_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
break;
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 SCTP_V6_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
break;
case TCP_V6_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
break;
case UDP_V6_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
break;
case IP_USER_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
break;
case IPV6_USER_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV6_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_V6_SRC_MASK) {
fsp->m_u.tcp_ip6_spec.ip6src[0] = htonl(0xFFFFFFFF);
fsp->m_u.tcp_ip6_spec.ip6src[1] = htonl(0xFFFFFFFF);
fsp->m_u.tcp_ip6_spec.ip6src[2] = htonl(0xFFFFFFFF);
fsp->m_u.tcp_ip6_spec.ip6src[3] = htonl(0xFFFFFFFF);
}
if (input_set & I40E_L3_V6_DST_MASK) {
fsp->m_u.tcp_ip6_spec.ip6dst[0] = htonl(0xFFFFFFFF);
fsp->m_u.tcp_ip6_spec.ip6dst[1] = htonl(0xFFFFFFFF);
fsp->m_u.tcp_ip6_spec.ip6dst[2] = htonl(0xFFFFFFFF);
fsp->m_u.tcp_ip6_spec.ip6dst[3] = htonl(0xFFFFFFFF);
}
if (input_set & I40E_L3_SRC_MASK)
fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
if (input_set & I40E_L3_DST_MASK)
fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
if (input_set & I40E_L4_SRC_MASK)
fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
if (input_set & I40E_L4_DST_MASK)
fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
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;
if (rule->vlan_tag) {
fsp->h_ext.vlan_etype = rule->vlan_etype;
fsp->m_ext.vlan_etype = htons(0xFFFF);
fsp->h_ext.vlan_tci = rule->vlan_tag;
fsp->m_ext.vlan_tci = htons(0xFFFF);
fsp->flow_type |= FLOW_EXT;
}
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) {
/* 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;
}
}
if (rule->flex_filter) {
userdef.flex_filter = true;
userdef.flex_word = be16_to_cpu(rule->flex_word);
userdef.flex_offset = rule->flex_offset;
}
i40e_fill_rx_flow_user_data(fsp, &userdef);
return 0;
}
/**
* i40e_get_rxnfc - command to get RX flow classification rules
* @netdev: network interface device structure
* @cmd: ethtool rxnfc command
* @rule_locs: pointer to store rule data
*
* 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:
cmd->data = vsi->rss_size;
ret = 0;
break;
case ETHTOOL_GRXFH:
ret = i40e_get_rss_hash_opts(pf, cmd);
break;
case ETHTOOL_GRXCLSRLCNT:
cmd->rule_cnt = pf->fdir_pf_active_filters;
/* report total rule count */
cmd->data = i40e_get_fd_cnt_all(pf);
ret = 0;
break;
case ETHTOOL_GRXCLSRULE:
ret = i40e_get_ethtool_fdir_entry(pf, cmd);
break;
case ETHTOOL_GRXCLSRLALL:
ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
break;
default:
break;
}
return ret;
}
/**
* i40e_get_rss_hash_bits - Read RSS Hash bits from register
* @nfc: pointer to user request
* @i_setc: bits currently set
*
* 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;
}
/**
* i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
* @pf: pointer to the physical function struct
* @nfc: ethtool rxnfc command
*
* 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;
u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
u8 flow_pctype = 0;
u64 i_set, i_setc;
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;
}
/* 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:
flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
hena |=
BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
break;
case TCP_V6_FLOW:
flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
hena |=
BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
hena |=
BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
break;
case UDP_V4_FLOW:
flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
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);
break;
case UDP_V6_FLOW:
flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
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);
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;
hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
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;
hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
break;
case IPV4_FLOW:
hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
break;
case IPV6_FLOW:
hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
break;
default:
return -EINVAL;
}
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);
}
i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
i40e_flush(hw);
return 0;
}
/**
* 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
*
* This function updates (or deletes) a Flow Director entry from
* the hlist of the corresponding PF
*
* Returns 0 on success
**/
static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
struct i40e_fdir_filter *input,
u16 sw_idx,
struct ethtool_rxnfc *cmd)
{
struct i40e_fdir_filter *rule, *parent;
struct i40e_pf *pf = vsi->back;
struct hlist_node *node2;
int err = -EINVAL;
parent = NULL;
rule = NULL;
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;
}
/* if there is an old rule occupying our place remove it */
if (rule && (rule->fd_id == sw_idx)) {
/* Remove this rule, since we're either deleting it, or
* replacing it.
*/
err = i40e_add_del_fdir(vsi, rule, false);
hlist_del(&rule->fdir_node);
kfree(rule);
pf->fdir_pf_active_filters--;
}
/* 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
*/
if (!input)
return err;
/* Otherwise, install the new rule as requested */
INIT_HLIST_NODE(&input->fdir_node);
/* add filter to the list */
if (parent)
hlist_add_behind(&input->fdir_node, &parent->fdir_node);
else
hlist_add_head(&input->fdir_node,
&pf->fdir_filter_list);
/* update counts */
pf->fdir_pf_active_filters++;
return 0;
}
/**
* 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);
}
}
}
/**
* 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
*
* The function removes a Flow Director filter entry from the
* hlist of the corresponding PF
*
* Returns 0 on success
*/
static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
struct ethtool_rxnfc *cmd)
{
struct ethtool_rx_flow_spec *fsp =
(struct ethtool_rx_flow_spec *)&cmd->fs;
struct i40e_pf *pf = vsi->back;
int ret = 0;
if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
return -EBUSY;
if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
return -EBUSY;
ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
i40e_prune_flex_pit_list(pf);
i40e_fdir_check_and_reenable(pf);
return ret;
}
/**
* 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
* @flex_pit_start: index to first entry for this section of the table
*
* 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));
}
/**
* i40e_flow_str - Converts a flow_type into a human readable string
* @fsp: the flow specification
*
* 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";
case TCP_V6_FLOW:
return "tcp6";
case UDP_V6_FLOW:
return "udp6";
case SCTP_V6_FLOW:
return "sctp6";
case IPV6_USER_FLOW:
return "ip6";
default:
return "unknown";
}
}
/**
* 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;
}
}
/**
* 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;
int i;
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");
/* 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");
}
netif_info(pf, drv, vsi->netdev, " Current input set: %0llx\n",
old);
netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
new);
}
/**
* i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
* @vsi: pointer to the targeted VSI
* @fsp: pointer to Rx flow specification
* @userdef: userdefined data from flow specification
*
* 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.
**/
static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
struct ethtool_rx_flow_spec *fsp,
struct i40e_rx_flow_userdef *userdef)
{
static const __be32 ipv6_full_mask[4] = {cpu_to_be32(0xffffffff),
cpu_to_be32(0xffffffff), cpu_to_be32(0xffffffff),
cpu_to_be32(0xffffffff)};
struct ethtool_tcpip6_spec *tcp_ip6_spec;
struct ethtool_usrip6_spec *usr_ip6_spec;
struct ethtool_tcpip4_spec *tcp_ip4_spec;
struct ethtool_usrip4_spec *usr_ip4_spec;
struct i40e_pf *pf = vsi->back;
u64 current_mask, new_mask;
bool new_flex_offset = false;
bool flex_l3 = false;
u16 *fdir_filter_count;
u16 index, src_offset = 0;
u8 pit_index = 0;
int err;
switch (fsp->flow_type & ~FLOW_EXT) {
case SCTP_V4_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
fdir_filter_count = &pf->fd_sctp4_filter_cnt;
break;
case TCP_V4_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
fdir_filter_count = &pf->fd_tcp4_filter_cnt;
break;
case UDP_V4_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
fdir_filter_count = &pf->fd_udp4_filter_cnt;
break;
case SCTP_V6_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
fdir_filter_count = &pf->fd_sctp6_filter_cnt;
break;
case TCP_V6_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
fdir_filter_count = &pf->fd_tcp6_filter_cnt;
break;
case UDP_V6_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
fdir_filter_count = &pf->fd_udp6_filter_cnt;
break;
case IP_USER_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
fdir_filter_count = &pf->fd_ip4_filter_cnt;
flex_l3 = true;
break;
case IPV6_USER_FLOW:
index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
fdir_filter_count = &pf->fd_ip6_filter_cnt;
flex_l3 = true;
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;
/* 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.
*/
switch (fsp->flow_type & ~FLOW_EXT) {
case SCTP_V4_FLOW:
new_mask &= ~I40E_VERIFY_TAG_MASK;
fallthrough;
case TCP_V4_FLOW:
case UDP_V4_FLOW:
tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
/* IPv4 source address */
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
return -EOPNOTSUPP;
/* IPv4 destination address */
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
return -EOPNOTSUPP;
/* L4 source port */
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
return -EOPNOTSUPP;
/* L4 destination port */
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
return -EOPNOTSUPP;
/* Filtering on Type of Service is not supported. */
if (tcp_ip4_spec->tos)
return -EOPNOTSUPP;
break;
case SCTP_V6_FLOW:
new_mask &= ~I40E_VERIFY_TAG_MASK;
fallthrough;
case TCP_V6_FLOW:
case UDP_V6_FLOW:
tcp_ip6_spec = &fsp->m_u.tcp_ip6_spec;
/* Check if user provided IPv6 source address. */
if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6src,
(struct in6_addr *)&ipv6_full_mask))
new_mask |= I40E_L3_V6_SRC_MASK;
else if (ipv6_addr_any((struct in6_addr *)
&tcp_ip6_spec->ip6src))
new_mask &= ~I40E_L3_V6_SRC_MASK;
else
return -EOPNOTSUPP;
/* Check if user provided destination address. */
if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6dst,
(struct in6_addr *)&ipv6_full_mask))
new_mask |= I40E_L3_V6_DST_MASK;
else if (ipv6_addr_any((struct in6_addr *)
&tcp_ip6_spec->ip6dst))
new_mask &= ~I40E_L3_V6_DST_MASK;
else
return -EOPNOTSUPP;
/* L4 source port */
if (tcp_ip6_spec->psrc == htons(0xFFFF))
new_mask |= I40E_L4_SRC_MASK;
else if (!tcp_ip6_spec->psrc)
new_mask &= ~I40E_L4_SRC_MASK;
else
return -EOPNOTSUPP;
/* L4 destination port */
if (tcp_ip6_spec->pdst == htons(0xFFFF))
new_mask |= I40E_L4_DST_MASK;
else if (!tcp_ip6_spec->pdst)
new_mask &= ~I40E_L4_DST_MASK;
else
return -EOPNOTSUPP;
/* Filtering on Traffic Classes is not supported. */
if (tcp_ip6_spec->tclass)
return -EOPNOTSUPP;
break;
case IP_USER_FLOW:
usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
/* IPv4 source address */
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
return -EOPNOTSUPP;
/* IPv4 destination address */
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
return -EOPNOTSUPP;
/* First 4 bytes of L4 header */
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
return -EOPNOTSUPP;
/* Filtering on Type of Service is not supported. */
if (usr_ip4_spec->tos)
return -EOPNOTSUPP;
/* Filtering on IP version is not supported */
if (usr_ip4_spec->ip_ver)
return -EINVAL;
/* Filtering on L4 protocol is not supported */
if (usr_ip4_spec->proto)
return -EINVAL;
break;
case IPV6_USER_FLOW:
usr_ip6_spec = &fsp->m_u.usr_ip6_spec;
/* Check if user provided IPv6 source address. */
if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6src,
(struct in6_addr *)&ipv6_full_mask))
new_mask |= I40E_L3_V6_SRC_MASK;
else if (ipv6_addr_any((struct in6_addr *)
&usr_ip6_spec->ip6src))
new_mask &= ~I40E_L3_V6_SRC_MASK;
else
return -EOPNOTSUPP;
/* Check if user provided destination address. */
if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6dst,
(struct in6_addr *)&ipv6_full_mask))
new_mask |= I40E_L3_V6_DST_MASK;
else if (ipv6_addr_any((struct in6_addr *)
&usr_ip6_spec->ip6src))
new_mask &= ~I40E_L3_V6_DST_MASK;
else
return -EOPNOTSUPP;
if (usr_ip6_spec->l4_4_bytes == htonl(0xFFFFFFFF))
new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
else if (!usr_ip6_spec->l4_4_bytes)
new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
else
return -EOPNOTSUPP;
/* Filtering on Traffic class is not supported. */
if (usr_ip6_spec->tclass)
return -EOPNOTSUPP;
/* Filtering on L4 protocol is not supported */
if (usr_ip6_spec->l4_proto)
return -EINVAL;
break;
default:
return -EOPNOTSUPP;
}
if (fsp->flow_type & FLOW_EXT) {
/* Allow only 802.1Q and no etype defined, as
* later it's modified to 0x8100
*/
if (fsp->h_ext.vlan_etype != htons(ETH_P_8021Q) &&
fsp->h_ext.vlan_etype != 0)
return -EOPNOTSUPP;
if (fsp->m_ext.vlan_tci == htons(0xFFFF))
new_mask |= I40E_VLAN_SRC_MASK;
else
new_mask &= ~I40E_VLAN_SRC_MASK;
}
/* 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.
*/
if (new_mask == current_mask && !new_flex_offset)
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);
if (new_flex_offset) {
netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
pit_index, src_offset);
}
/* 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);
return -EOPNOTSUPP;
}
i40e_write_fd_input_set(pf, index, new_mask);
/* 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);
/* 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);
}
return 0;
}
/**
* 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->ipl4_proto != b->ipl4_proto ||
a->vlan_tag != b->vlan_tag ||
a->vlan_etype != b->vlan_etype)
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;
}
/**
* i40e_add_fdir_ethtool - Add/Remove Flow Director filters
* @vsi: pointer to the targeted VSI
* @cmd: command to get or set RX flow classification rules
*
* Add Flow Director filters for a specific flow spec based on their
* protocol. Returns 0 if the filters were successfully added.
**/
static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
struct ethtool_rxnfc *cmd)
{
struct i40e_rx_flow_userdef userdef;
struct ethtool_rx_flow_spec *fsp;
struct i40e_fdir_filter *input;
u16 dest_vsi = 0, q_index = 0;
struct i40e_pf *pf;
int ret = -EINVAL;
u8 dest_ctl;
if (!vsi)
return -EINVAL;
pf = vsi->back;
if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
return -EOPNOTSUPP;
if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
return -ENOSPC;
if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
return -EBUSY;
if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
return -EBUSY;
fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
/* Parse the user-defined field */
if (i40e_parse_rx_flow_user_data(fsp, &userdef))
return -EINVAL;
/* Extended MAC field is not supported */
if (fsp->flow_type & FLOW_MAC_EXT)
return -EINVAL;
ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
if (ret)
return ret;
if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
pf->hw.func_caps.fd_filters_guaranteed)) {
return -EINVAL;
}
/* 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;
}
input = kzalloc(sizeof(*input), GFP_KERNEL);
if (!input)
return -ENOMEM;
input->fd_id = fsp->location;
input->q_index = q_index;
input->dest_vsi = dest_vsi;
input->dest_ctl = dest_ctl;
input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
input->cnt_index = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
input->flow_type = fsp->flow_type & ~FLOW_EXT;
input->vlan_etype = fsp->h_ext.vlan_etype;
if (!fsp->m_ext.vlan_etype && fsp->h_ext.vlan_tci)
input->vlan_etype = cpu_to_be16(ETH_P_8021Q);
if (fsp->m_ext.vlan_tci && input->vlan_etype)
input->vlan_tag = fsp->h_ext.vlan_tci;
if (input->flow_type == IPV6_USER_FLOW ||
input->flow_type == UDP_V6_FLOW ||
input->flow_type == TCP_V6_FLOW ||
input->flow_type == SCTP_V6_FLOW) {
/* 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->ipl4_proto = fsp->h_u.usr_ip6_spec.l4_proto;
input->dst_port = fsp->h_u.tcp_ip6_spec.psrc;
input->src_port = fsp->h_u.tcp_ip6_spec.pdst;
memcpy(input->dst_ip6, fsp->h_u.ah_ip6_spec.ip6src,
sizeof(__be32) * 4);
memcpy(input->src_ip6, fsp->h_u.ah_ip6_spec.ip6dst,
sizeof(__be32) * 4);
} else {
/* 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->ipl4_proto = fsp->h_u.usr_ip4_spec.proto;
input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
}
if (userdef.flex_filter) {
input->flex_filter = true;
input->flex_word = cpu_to_be16(userdef.flex_word);
input->flex_offset = userdef.flex_offset;
}
/* Avoid programming two filters with identical match criteria. */
ret = i40e_disallow_matching_filters(vsi, input);
if (ret)
goto free_filter_memory;
/* 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);
ret = i40e_add_del_fdir(vsi, input, true);
if (ret)
goto remove_sw_rule;
return 0;
remove_sw_rule:
hlist_del(&input->fdir_node);
pf->fdir_pf_active_filters--;
free_filter_memory:
kfree(input);
return ret;
}
/**
* 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:
ret = i40e_add_fdir_ethtool(vsi, cmd);
break;
case ETHTOOL_SRXCLSRLDEL:
ret = i40e_del_fdir_entry(vsi, cmd);
break;
default:
break;
}
return ret;
}
/**
* 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.
* @dev: network interface device structure
* @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,
struct ethtool_channels *ch)
{
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 */
ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
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.
* @dev: network interface device structure
* @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,
struct ethtool_channels *ch)
{
const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
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;
struct i40e_fdir_filter *rule;
struct hlist_node *node2;
int new_count;
int err = 0;
/* We do not support setting channels for any other VSI at present */
if (vsi->type != I40E_VSI_MAIN)
return -EINVAL;
/* We do not support setting channels via ethtool when TCs are
* configured through mqprio
*/
if (pf->flags & I40E_FLAG_TC_MQPRIO)
return -EINVAL;
/* verify they are not requesting separate vectors */
if (!count || ch->rx_count || ch->tx_count)
return -EINVAL;
/* verify other_count has not changed */
if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
return -EINVAL;
/* verify the number of channels does not exceed hardware limits */
if (count > i40e_max_channels(vsi))
return -EINVAL;
/* 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;
}
/* 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);
if (new_count > 0)
return 0;
else
return -EINVAL;
}
/**
* 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;
}
/**
* 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.
**/
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;
u8 *lut, *seed = NULL;
int ret;
u16 i;
if (hfunc)
*hfunc = ETH_RSS_HASH_TOP;
if (!indir)
return 0;
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]);
out:
kfree(lut);
return ret;
}
/**
* i40e_set_rxfh - set the rx flow hash indirection table
* @netdev: network interface device structure
* @indir: indirection table
* @key: hash key
* @hfunc: hash function to use
*
* Returns -EINVAL if the table specifies an invalid queue id, otherwise
* 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;
struct i40e_pf *pf = vsi->back;
u8 *seed = NULL;
u16 i;
if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
if (key) {
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;
}
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 */
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);
return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
I40E_HLUT_ARRAY_SIZE);
}
/**
* 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
* flag returned. Add new strings for each flag to the i40e_gstrings_priv_flags
* array.
*
* Returns a u32 bitmap of flags.
**/
static u32 i40e_get_priv_flags(struct net_device *dev)
{
struct i40e_netdev_priv *np = netdev_priv(dev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u32 i, j, ret_flags = 0;
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 (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);
}
return ret_flags;
}
/**
* 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);
u64 orig_flags, new_flags, changed_flags;
enum i40e_admin_queue_err adq_err;
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u32 reset_needed = 0;
i40e_status status;
u32 i, j;
orig_flags = READ_ONCE(pf->flags);
new_flags = orig_flags;
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))
new_flags |= priv_flags->flag;
else
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;
}
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))
new_flags |= priv_flags->flag;
else
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;
}
flags_complete:
changed_flags = orig_flags ^ new_flags;
if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP)
reset_needed = I40E_PF_RESET_AND_REBUILD_FLAG;
if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED))
reset_needed = BIT(__I40E_PF_RESET_REQUESTED);
/* 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;
/* If the driver detected FW LLDP was disabled on init, this flag could
* be set, however we do not support _changing_ the flag:
* - on XL710 if NPAR is enabled or FW API version < 1.7
* - on X722 with FW API version < 1.6
* 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.
*/
if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) {
dev_warn(&pf->pdev->dev,
"Device does not support changing FW LLDP\n");
return -EOPNOTSUPP;
}
}
if (changed_flags & I40E_FLAG_RS_FEC &&
pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
pf->hw.device_id != I40E_DEV_ID_25G_B) {
dev_warn(&pf->pdev->dev,
"Device does not support changing FEC configuration\n");
return -EOPNOTSUPP;
}
if (changed_flags & I40E_FLAG_BASE_R_FEC &&
pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
pf->hw.device_id != I40E_DEV_ID_25G_B &&
pf->hw.device_id != I40E_DEV_ID_KX_X722) {
dev_warn(&pf->pdev->dev,
"Device does not support changing FEC configuration\n");
return -EOPNOTSUPP;
}
/* 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.
*/
/* Flush current ATR settings if ATR was disabled */
if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
!(new_flags & I40E_FLAG_FD_ATR_ENABLED)) {
set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
}
if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
u16 sw_flags = 0, valid_flags = 0;
int ret;
if (!(new_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,
0, NULL);
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 */
}
}
if ((changed_flags & I40E_FLAG_RS_FEC) ||
(changed_flags & I40E_FLAG_BASE_R_FEC)) {
u8 fec_cfg = 0;
if (new_flags & I40E_FLAG_RS_FEC &&
new_flags & I40E_FLAG_BASE_R_FEC) {
fec_cfg = I40E_AQ_SET_FEC_AUTO;
} else if (new_flags & I40E_FLAG_RS_FEC) {
fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
I40E_AQ_SET_FEC_ABILITY_RS);
} else if (new_flags & I40E_FLAG_BASE_R_FEC) {
fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
I40E_AQ_SET_FEC_ABILITY_KR);
}
if (i40e_set_fec_cfg(dev, fec_cfg))
dev_warn(&pf->pdev->dev, "Cannot change FEC config\n");
}
if ((changed_flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
(orig_flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)) {
dev_err(&pf->pdev->dev,
"Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)\n");
return -EOPNOTSUPP;
}
if ((changed_flags & new_flags &
I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
(new_flags & I40E_FLAG_MFP_ENABLED))
dev_warn(&pf->pdev->dev,
"Turning on link-down-on-close flag may affect other partitions\n");
if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) {
#ifdef CONFIG_I40E_DCB
i40e_dcb_sw_default_config(pf);
#endif /* CONFIG_I40E_DCB */
i40e_aq_cfg_lldp_mib_change_event(&pf->hw, false, NULL);
i40e_aq_stop_lldp(&pf->hw, true, false, NULL);
} else {
status = i40e_aq_start_lldp(&pf->hw, false, NULL);
if (status) {
adq_err = pf->hw.aq.asq_last_status;
switch (adq_err) {
case I40E_AQ_RC_EEXIST:
dev_warn(&pf->pdev->dev,
"FW LLDP agent is already running\n");
reset_needed = 0;
break;
case I40E_AQ_RC_EPERM:
dev_warn(&pf->pdev->dev,
"Device configuration forbids SW from starting the LLDP agent.\n");
return -EINVAL;
case I40E_AQ_RC_EAGAIN:
dev_warn(&pf->pdev->dev,
"Stop FW LLDP agent command is still being processed, please try again in a second.\n");
return -EBUSY;
default:
dev_warn(&pf->pdev->dev,
"Starting FW LLDP agent failed: error: %s, %s\n",
i40e_stat_str(&pf->hw,
status),
i40e_aq_str(&pf->hw,
adq_err));
return -EINVAL;
}
}
}
}
/* 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.
*/
pf->flags = new_flags;
/* Issue reset to cause things to take effect, as additional bits
* are added we will need to create a mask of bits requiring reset
*/
if (reset_needed)
i40e_do_reset(pf, reset_needed, true);
return 0;
}
/**
* 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, true,
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, true,
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 if (!(sff8472_swap & I40E_MODULE_SFF_DDM_IMPLEMENTED)) {
/* Module is SFF-8472 compliant but doesn't implement
* Digital Diagnostic Monitoring (DDM).
*/
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, true,
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, true, offset, &value, NULL);
if (status)
return -EIO;
data[i] = value;
}
return 0;
}
static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_aq_get_phy_abilities_resp phy_cfg;
enum i40e_status_code status = 0;
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
/* Get initial PHY capabilities */
status = i40e_aq_get_phy_capabilities(hw, false, true, &phy_cfg, NULL);
if (status)
return -EAGAIN;
/* Check whether NIC configuration is compatible with Energy Efficient
* Ethernet (EEE) mode.
*/
if (phy_cfg.eee_capability == 0)
return -EOPNOTSUPP;
edata->supported = SUPPORTED_Autoneg;
edata->lp_advertised = edata->supported;
/* Get current configuration */
status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_cfg, NULL);
if (status)
return -EAGAIN;
edata->advertised = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U;
edata->eee_enabled = !!edata->advertised;
edata->tx_lpi_enabled = pf->stats.tx_lpi_status;
edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status;
return 0;
}
static int i40e_is_eee_param_supported(struct net_device *netdev,
struct ethtool_eee *edata)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_ethtool_not_used {
u32 value;
const char *name;
} param[] = {
{edata->advertised & ~SUPPORTED_Autoneg, "advertise"},
{edata->tx_lpi_timer, "tx-timer"},
{edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"}
};
int i;
for (i = 0; i < ARRAY_SIZE(param); i++) {
if (param[i].value) {
netdev_info(netdev,
"EEE setting %s not supported\n",
param[i].name);
return -EOPNOTSUPP;
}
}
return 0;
}
static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_aq_get_phy_abilities_resp abilities;
enum i40e_status_code status = I40E_SUCCESS;
struct i40e_aq_set_phy_config config;
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
__le16 eee_capability;
/* Deny parameters we don't support */
if (i40e_is_eee_param_supported(netdev, edata))
return -EOPNOTSUPP;
/* Get initial PHY capabilities */
status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
NULL);
if (status)
return -EAGAIN;
/* Check whether NIC configuration is compatible with Energy Efficient
* Ethernet (EEE) mode.
*/
if (abilities.eee_capability == 0)
return -EOPNOTSUPP;
/* Cache initial EEE capability */
eee_capability = abilities.eee_capability;
/* Get current PHY configuration */
status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
NULL);
if (status)
return -EAGAIN;
/* Cache current PHY configuration */
config.phy_type = abilities.phy_type;
config.phy_type_ext = abilities.phy_type_ext;
config.link_speed = abilities.link_speed;
config.abilities = abilities.abilities |
I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
config.eeer = abilities.eeer_val;
config.low_power_ctrl = abilities.d3_lpan;
config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
I40E_AQ_PHY_FEC_CONFIG_MASK;
/* Set desired EEE state */
if (edata->eee_enabled) {
config.eee_capability = eee_capability;
config.eeer |= cpu_to_le32(I40E_PRTPM_EEER_TX_LPI_EN_MASK);
} else {
config.eee_capability = 0;
config.eeer &= cpu_to_le32(~I40E_PRTPM_EEER_TX_LPI_EN_MASK);
}
/* Apply modified PHY configuration */
status = i40e_aq_set_phy_config(hw, &config, NULL);
if (status)
return -EAGAIN;
return 0;
}
static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = {
.get_drvinfo = i40e_get_drvinfo,
.set_eeprom = i40e_set_eeprom,
.get_eeprom_len = i40e_get_eeprom_len,
.get_eeprom = i40e_get_eeprom,
};
static const struct ethtool_ops i40e_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_MAX_FRAMES_IRQ |
ETHTOOL_COALESCE_USE_ADAPTIVE |
ETHTOOL_COALESCE_RX_USECS_HIGH |
ETHTOOL_COALESCE_TX_USECS_HIGH,
.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,
.set_wol = i40e_set_wol,
.set_eeprom = i40e_set_eeprom,
.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,
.set_pauseparam = i40e_set_pauseparam,
.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,
.get_eee = i40e_get_eee,
.set_eee = i40e_set_eee,
.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,
.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,
.get_channels = i40e_get_channels,
.set_channels = i40e_set_channels,
.get_module_info = i40e_get_module_info,
.get_module_eeprom = i40e_get_module_eeprom,
.get_ts_info = i40e_get_ts_info,
.get_priv_flags = i40e_get_priv_flags,
.set_priv_flags = i40e_set_priv_flags,
.get_per_queue_coalesce = i40e_get_per_queue_coalesce,
.set_per_queue_coalesce = i40e_set_per_queue_coalesce,
.get_link_ksettings = i40e_get_link_ksettings,
.set_link_ksettings = i40e_set_link_ksettings,
.get_fecparam = i40e_get_fec_param,
.set_fecparam = i40e_set_fec_param,
.flash_device = i40e_ddp_flash,
};
void i40e_set_ethtool_ops(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
netdev->ethtool_ops = &i40e_ethtool_ops;
else
netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops;
}