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OpenCloudOS-Kernel/drivers/thirdparty/iavf/iavf_ethtool.c

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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2013, Intel Corporation. */
/* ethtool support for iavf */
#include "iavf.h"
#ifdef SIOCETHTOOL
#include <linux/uaccess.h>
#ifndef ETH_GSTRING_LEN
#define ETH_GSTRING_LEN 32
#endif
#ifdef ETHTOOL_OPS_COMPAT
#include "kcompat_ethtool.c"
#endif
#include "iavf_ethtool_stats.h"
#define VF_STAT(_name, _stat) \
IAVF_STAT(struct iavf_adapter, _name, _stat)
static const struct iavf_stats iavf_gstrings_stats[] = {
VF_STAT("rx_bytes", current_stats.rx_bytes),
VF_STAT("rx_unicast", current_stats.rx_unicast),
VF_STAT("rx_multicast", current_stats.rx_multicast),
VF_STAT("rx_broadcast", current_stats.rx_broadcast),
VF_STAT("rx_discards", current_stats.rx_discards),
VF_STAT("rx_unknown_protocol", current_stats.rx_unknown_protocol),
VF_STAT("tx_bytes", current_stats.tx_bytes),
VF_STAT("tx_unicast", current_stats.tx_unicast),
VF_STAT("tx_multicast", current_stats.tx_multicast),
VF_STAT("tx_broadcast", current_stats.tx_broadcast),
VF_STAT("tx_discards", current_stats.tx_discards),
VF_STAT("tx_errors", current_stats.tx_errors),
VF_STAT("tx_hwtstamp_skipped", ptp.tx_hwtstamp_skipped),
VF_STAT("tx_hwtstamp_timeouts", ptp.tx_hwtstamp_timeouts),
#ifdef IAVF_ADD_PROBES
VF_STAT("tx_tcp_segments", tcp_segs),
VF_STAT("tx_udp_segments", udp_segs),
VF_STAT("tx_tcp_cso", tx_tcp_cso),
VF_STAT("tx_udp_cso", tx_udp_cso),
VF_STAT("tx_sctp_cso", tx_sctp_cso),
VF_STAT("tx_ip4_cso", tx_ip4_cso),
VF_STAT("tx_vlano", tx_vlano),
VF_STAT("tx_ad_vlano", tx_ad_vlano),
VF_STAT("rx_tcp_cso", rx_tcp_cso),
VF_STAT("rx_udp_cso", rx_udp_cso),
VF_STAT("rx_sctp_cso", rx_sctp_cso),
VF_STAT("rx_ip4_cso", rx_ip4_cso),
VF_STAT("rx_vlano", rx_vlano),
VF_STAT("rx_ad_vlano", rx_ad_vlano),
VF_STAT("rx_tcp_cso_error", rx_tcp_cso_err),
VF_STAT("rx_udp_cso_error", rx_udp_cso_err),
VF_STAT("rx_sctp_cso_error", rx_sctp_cso_err),
VF_STAT("rx_ip4_cso_error", rx_ip4_cso_err),
#endif
};
#define IAVF_STATS_LEN ARRAY_SIZE(iavf_gstrings_stats)
#define IAVF_QUEUE_STATS_LEN (ARRAY_SIZE(iavf_gstrings_queue_stats) + \
ARRAY_SIZE(iavf_gstrings_queue_stats_poll))
#define IAVF_TX_QUEUE_STATS_LEN ARRAY_SIZE(iavf_gstrings_queue_stats_tx)
#define IAVF_RX_QUEUE_STATS_LEN ARRAY_SIZE(iavf_gstrings_queue_stats_rx)
#define IAVF_VECTOR_STATS_LEN ARRAY_SIZE(iavf_gstrings_queue_stats_vector)
#ifdef HAVE_SWIOTLB_SKIP_CPU_SYNC
/* For now we have one and only one private flag and it is only defined
* when we have support for the SKIP_CPU_SYNC DMA attribute. Instead
* of leaving all this code sitting around empty we will strip it unless
* our one private flag is actually available.
*/
struct iavf_priv_flags {
char flag_string[ETH_GSTRING_LEN];
u32 flag;
bool read_only;
};
#define IAVF_PRIV_FLAG(_name, _flag, _read_only) { \
.flag_string = _name, \
.flag = _flag, \
.read_only = _read_only, \
}
static const struct iavf_priv_flags iavf_gstrings_priv_flags[] = {
IAVF_PRIV_FLAG("legacy-rx", IAVF_FLAG_LEGACY_RX, 0),
};
#define IAVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(iavf_gstrings_priv_flags)
static const struct iavf_priv_flags iavf_gstrings_chnl_priv_flags[] = {
IAVF_PRIV_FLAG("channel-pkt-inspect-optimize",
IAVF_FLAG_CHNL_PKT_OPT_ENA, 0),
};
#define IAVF_CHNL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(iavf_gstrings_chnl_priv_flags)
#endif /* HAVE_SWIOTLB_SKIP_CPU_SYNC */
/**
* iavf_get_link_ksettings - Get Link Speed and Duplex settings
* @netdev: network interface device structure
* @cmd: ethtool command
*
* Reports speed/duplex settings. Because this is a VF, we don't know what
* kind of link we really have, so we fake it.
**/
static int iavf_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
ethtool_link_ksettings_zero_link_mode(cmd, supported);
ethtool_link_ksettings_zero_link_mode(cmd, advertising);
cmd->base.autoneg = AUTONEG_DISABLE;
cmd->base.port = PORT_NONE;
cmd->base.duplex = DUPLEX_FULL;
#ifdef VIRTCHNL_VF_CAP_ADV_LINK_SPEED
if (ADV_LINK_SUPPORT(adapter)) {
if (adapter->link_speed_mbps &&
adapter->link_speed_mbps < U32_MAX)
cmd->base.speed = adapter->link_speed_mbps;
else
cmd->base.speed = SPEED_UNKNOWN;
return 0;
}
#endif /* VIRTCHNL_VF_CAP_ADV_LINK_SPEED */
switch (adapter->link_speed) {
case VIRTCHNL_LINK_SPEED_40GB:
cmd->base.speed = SPEED_40000;
break;
case VIRTCHNL_LINK_SPEED_25GB:
#ifdef SPEED_25000
cmd->base.speed = SPEED_25000;
#else
netdev_info(netdev,
"Speed is 25G, display not supported by this version of ethtool.\n");
#endif
break;
case VIRTCHNL_LINK_SPEED_20GB:
cmd->base.speed = SPEED_20000;
break;
case VIRTCHNL_LINK_SPEED_10GB:
cmd->base.speed = SPEED_10000;
break;
case VIRTCHNL_LINK_SPEED_5GB:
cmd->base.speed = SPEED_5000;
break;
case VIRTCHNL_LINK_SPEED_2_5GB:
cmd->base.speed = SPEED_2500;
break;
case VIRTCHNL_LINK_SPEED_1GB:
cmd->base.speed = SPEED_1000;
break;
case VIRTCHNL_LINK_SPEED_100MB:
cmd->base.speed = SPEED_100;
break;
default:
cmd->base.speed = SPEED_UNKNOWN;
break;
}
return 0;
}
#ifndef ETHTOOL_GLINKSETTINGS
/**
* iavf_get_settings - Get Link Speed and Duplex settings
* @netdev: network interface device structure
* @ecmd: ethtool command
*
* Reports speed/duplex settings based on media type. Since we've backported
* the new API constructs to use in the old API, this ends up just being
* a wrapper to iavf_get_link_ksettings.
**/
static int iavf_get_settings(struct net_device *netdev,
struct ethtool_cmd *ecmd)
{
struct ethtool_link_ksettings ks;
iavf_get_link_ksettings(netdev, &ks);
_kc_ethtool_ksettings_to_cmd(&ks, ecmd);
ecmd->transceiver = XCVR_EXTERNAL;
return 0;
}
#endif /* !ETHTOOL_GLINKSETTINGS */
/**
* iavf_get_sset_count - Get length of string set
* @netdev: network interface device structure
* @sset: id of string set
*
* Reports size of various string tables.
**/
static int iavf_get_sset_count(struct net_device *netdev, int sset)
{
/* Report the maximum number queues, even if not every queue is
* currently configured. Since allocation of queues is in pairs,
* use netdev->real_num_tx_queues * 2. The real_num_tx_queues is set
* at device creation and never changes.
*/
if (sset == ETH_SS_STATS)
return IAVF_STATS_LEN +
(IAVF_QUEUE_STATS_LEN * 2 *
netdev->real_num_tx_queues) +
((IAVF_TX_QUEUE_STATS_LEN + IAVF_RX_QUEUE_STATS_LEN +
IAVF_VECTOR_STATS_LEN) * netdev->real_num_tx_queues);
#ifdef HAVE_SWIOTLB_SKIP_CPU_SYNC
else if (sset == ETH_SS_PRIV_FLAGS)
return IAVF_PRIV_FLAGS_STR_LEN + IAVF_PRIV_FLAGS_STR_LEN;
#endif
else
return -EINVAL;
}
/**
* iavf_get_ethtool_stats - report device statistics
* @netdev: network interface device structure
* @stats: ethtool statistics structure
* @data: pointer to data buffer
*
* All statistics are added to the data buffer as an array of u64.
**/
static void iavf_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *data)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
unsigned int i;
/* Explicitly request stats refresh */
iavf_schedule_request_stats(adapter);
iavf_add_ethtool_stats(&data, adapter, iavf_gstrings_stats);
rcu_read_lock();
/* As num_active_queues describe both tx and rx queues, we can use
* it to iterate over rings' stats.
*/
for (i = 0; i < adapter->num_active_queues; i++) {
struct iavf_ring *ring;
/* Tx rings stats */
ring = &adapter->tx_rings[i];
iavf_add_queue_stats(&data, ring);
iavf_add_queue_stats_chnl(&data, ring, IAVF_CHNL_STAT_POLL);
iavf_add_queue_stats_chnl(&data, ring, IAVF_CHNL_STAT_TX);
/* Rx rings stats */
ring = &adapter->rx_rings[i];
iavf_add_queue_stats(&data, ring);
iavf_add_queue_stats_chnl(&data, ring, IAVF_CHNL_STAT_POLL);
iavf_add_queue_stats_chnl(&data, ring, IAVF_CHNL_STAT_RX);
iavf_add_queue_stats_chnl(&data, ring, IAVF_CHNL_STAT_VECTOR);
}
rcu_read_unlock();
}
#ifdef HAVE_SWIOTLB_SKIP_CPU_SYNC
/**
* iavf_get_priv_flag_strings - Get private flag strings
* @netdev: network interface device structure
* @data: buffer for string data
*
* Builds the private flags string table
**/
static void iavf_get_priv_flag_strings(struct net_device *netdev, u8 *data)
{
unsigned int i;
for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) {
snprintf(data, ETH_GSTRING_LEN, "%s",
iavf_gstrings_priv_flags[i].flag_string);
data += ETH_GSTRING_LEN;
}
for (i = 0; i < IAVF_CHNL_PRIV_FLAGS_STR_LEN; i++) {
snprintf(data, ETH_GSTRING_LEN, "%s",
iavf_gstrings_chnl_priv_flags[i].flag_string);
data += ETH_GSTRING_LEN;
}
}
#endif
/**
* iavf_get_stat_strings - Get stat strings
* @netdev: network interface device structure
* @data: buffer for string data
*
* Builds the statistics string table
**/
static void iavf_get_stat_strings(struct net_device *netdev, u8 *data)
{
unsigned int i;
iavf_add_stat_strings(&data, iavf_gstrings_stats);
/* Queues are always allocated in pairs, so we just use
* real_num_tx_queues for both Tx and Rx queues.
*/
for (i = 0; i < netdev->real_num_tx_queues; i++) {
iavf_add_stat_strings(&data, iavf_gstrings_queue_stats,
"tx", i);
iavf_add_stat_strings(&data, iavf_gstrings_queue_stats_poll,
"tx", i);
iavf_add_stat_strings(&data, iavf_gstrings_queue_stats_tx,
"tx", i);
iavf_add_stat_strings(&data, iavf_gstrings_queue_stats,
"rx", i);
iavf_add_stat_strings(&data, iavf_gstrings_queue_stats_poll,
"rx", i);
iavf_add_stat_strings(&data, iavf_gstrings_queue_stats_rx,
"rx", i);
iavf_add_stat_strings(&data, iavf_gstrings_queue_stats_vector,
"rx", i);
}
}
/**
* iavf_get_strings - Get string set
* @netdev: network interface device structure
* @sset: id of string set
* @data: buffer for string data
*
* Builds string tables for various string sets
**/
static void iavf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
{
switch (sset) {
case ETH_SS_STATS:
iavf_get_stat_strings(netdev, data);
break;
#ifdef HAVE_SWIOTLB_SKIP_CPU_SYNC
case ETH_SS_PRIV_FLAGS:
iavf_get_priv_flag_strings(netdev, data);
break;
#endif
default:
break;
}
}
#ifdef HAVE_SWIOTLB_SKIP_CPU_SYNC
/**
* iavf_get_priv_flags - report device private flags
* @netdev: 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 iavf_gstrings_priv_flags
* array.
*
* Returns a u32 bitmap of flags.
**/
static u32 iavf_get_priv_flags(struct net_device *netdev)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
const struct iavf_priv_flags *priv_flags;
u32 i, ret_flags = 0;
for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) {
priv_flags = &iavf_gstrings_priv_flags[i];
if (priv_flags->flag & adapter->flags)
ret_flags |= BIT(i);
}
for (i = 0; i < IAVF_CHNL_PRIV_FLAGS_STR_LEN; i++) {
priv_flags = &iavf_gstrings_chnl_priv_flags[i];
if (priv_flags->flag & adapter->chnl_perf_flags)
ret_flags |= BIT(i + IAVF_PRIV_FLAGS_STR_LEN);
}
return ret_flags;
}
/**
* iavf_determine_priv_flag_change - detect any change in private flags
* @priv_flags: Ptr to private flags array
* @num: count of private flags
* @bit_offset: "offset" into unified view of bits
* @flags: bit flags to be set
* @orig: Ptr to flags
* @changed_flags: bits changed (based on orig and new value)
*
* Detect any changes in priv flags and return those changed bits
**/
static int
iavf_determine_priv_flag_change(const struct iavf_priv_flags *priv_flags,
int num, int bit_offset, u32 flags, u32 *orig,
u32 *changed_flags)
{
u32 orig_flags = READ_ONCE(*orig);
u32 new_flags;
int i;
new_flags = orig_flags;
for (i = 0; i < num; i++) {
if (flags & BIT(i + bit_offset))
new_flags |= priv_flags->flag;
else
new_flags &= ~(priv_flags->flag);
if (priv_flags->read_only &&
((orig_flags ^ new_flags) & ~BIT(i)))
return -EOPNOTSUPP;
priv_flags++;
}
/* Before we finalize any flag changes, any checks which we need to
* perform to determine if the new flags will be supported should go
* here...
*/
/* Compare and exchange the new flags into place. If we failed, that
* is if cmpxchg returns anything but the old value, this means
* something else must have modified the flags variable since we
* copied it. We'll just punt with an error and log something in the
* message buffer.
*/
if (cmpxchg(orig, orig_flags, new_flags) != orig_flags)
return -EAGAIN;
*changed_flags = orig_flags ^ new_flags;
return 0;
}
/**
* iavf_set_priv_flags - set private flags
* @netdev: network interface device structure
* @flags: bit flags to be set
**/
static int iavf_set_priv_flags(struct net_device *netdev, u32 flags)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
u32 changed_chnl_flags;
u32 changed_flags;
int ret;
ret = iavf_determine_priv_flag_change(&iavf_gstrings_priv_flags[0],
IAVF_PRIV_FLAGS_STR_LEN, 0,
flags, &adapter->flags,
&changed_flags);
if (ret) {
if (ret == -EAGAIN)
dev_warn(&adapter->pdev->dev,
"Unable to update adapter->flags as it was modified by another thread...\n");
return ret;
}
ret = iavf_determine_priv_flag_change(&iavf_gstrings_chnl_priv_flags[0],
IAVF_CHNL_PRIV_FLAGS_STR_LEN,
IAVF_PRIV_FLAGS_STR_LEN,
flags, &adapter->chnl_perf_flags,
&changed_chnl_flags);
if (ret) {
if (ret == -EAGAIN)
dev_warn(&adapter->pdev->dev,
"Unable to update adapter->chnl_perf_flags as it was modified by another thread...\n");
return ret;
}
/* 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.
*/
/* issue a reset to force legacy-rx change to take effect */
if (changed_flags & IAVF_FLAG_LEGACY_RX) {
if (netif_running(netdev))
iavf_schedule_reset(adapter);
}
/* Process any additional changes needed as a result of change
* in channel specific flag(s)
*/
iavf_setup_ch_info(adapter, changed_chnl_flags);
return 0;
}
#endif /* HAVE_SWIOTLB_SKIP_CPU_SYNC */
#ifndef HAVE_NDO_SET_FEATURES
/**
* iavf_get_rx_csum - Get RX checksum settings
* @netdev: network interface device structure
*
* Returns true or false depending upon RX checksum enabled.
**/
static u32 iavf_get_rx_csum(struct net_device *netdev)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
return adapter->flags & IAVF_FLAG_RX_CSUM_ENABLED;
}
/**
* iavf_set_rx_csum - Set RX checksum settings
* @netdev: network interface device structure
* @data: RX checksum setting (boolean)
*
**/
static int iavf_set_rx_csum(struct net_device *netdev, u32 data)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
if (data)
adapter->flags |= IAVF_FLAG_RX_CSUM_ENABLED;
else
adapter->flags &= ~IAVF_FLAG_RX_CSUM_ENABLED;
return 0;
}
/**
* iavf_get_tx_csum - Get TX checksum settings
* @netdev: network interface device structure
*
* Returns true or false depending upon TX checksum enabled.
**/
static u32 iavf_get_tx_csum(struct net_device *netdev)
{
return (netdev->features & NETIF_F_IP_CSUM) != 0;
}
/**
* iavf_set_tx_csum - Set TX checksum settings
* @netdev: network interface device structure
* @data: TX checksum setting (boolean)
*
**/
static int iavf_set_tx_csum(struct net_device *netdev, u32 data)
{
if (data)
netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
else
netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
return 0;
}
/**
* iavf_set_tso - Set TX segmentation offload settings
* @netdev: network interface device structure
* @data: TSO setting (boolean)
*
**/
static int iavf_set_tso(struct net_device *netdev, u32 data)
{
if (data) {
netdev->features |= NETIF_F_TSO;
netdev->features |= NETIF_F_TSO6;
} else {
netif_tx_stop_all_queues(netdev);
netdev->features &= ~NETIF_F_TSO;
netdev->features &= ~NETIF_F_TSO6;
#ifndef HAVE_NETDEV_VLAN_FEATURES
/* disable TSO on all VLANs if they're present */
if (adapter->vsi.vlgrp) {
struct iavf_adapter *adapter = netdev_priv(netdev);
struct vlan_group *vlgrp = adapter->vsi.vlgrp;
struct net_device *v_netdev;
int i;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
v_netdev = vlan_group_get_device(vlgrp, i);
if (v_netdev) {
v_netdev->features &= ~NETIF_F_TSO;
v_netdev->features &= ~NETIF_F_TSO6;
vlan_group_set_device(vlgrp, i,
v_netdev);
}
}
}
#endif
netif_tx_start_all_queues(netdev);
}
return 0;
}
#endif /* HAVE_NDO_SET_FEATURES */
/**
* iavf_get_msglevel - Get debug message level
* @netdev: network interface device structure
*
* Returns current debug message level.
**/
static u32 iavf_get_msglevel(struct net_device *netdev)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
return adapter->msg_enable;
}
/**
* iavf_set_msglevel - Set debug message level
* @netdev: network interface device structure
* @data: message level
*
* Set current debug message level. Higher values cause the driver to
* be noisier.
**/
static void iavf_set_msglevel(struct net_device *netdev, u32 data)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
if (IAVF_DEBUG_USER & data)
adapter->hw.debug_mask = data;
adapter->msg_enable = data;
}
/**
* iavf_get_drvinfo - Get driver info
* @netdev: network interface device structure
* @drvinfo: ethool driver info structure
*
* Returns information about the driver and device for display to the user.
**/
static void iavf_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
strlcpy(drvinfo->driver, iavf_driver_name, 32);
strlcpy(drvinfo->version, iavf_driver_version, 32);
strlcpy(drvinfo->fw_version, "N/A", 4);
strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
#ifdef HAVE_SWIOTLB_SKIP_CPU_SYNC
drvinfo->n_priv_flags = IAVF_PRIV_FLAGS_STR_LEN;
#endif
}
/**
* iavf_get_ringparam - Get ring parameters
* @netdev: network interface device structure
* @ring: ethtool ringparam structure
*
* Returns current ring parameters. TX and RX rings are reported separately,
* but the number of rings is not reported.
**/
static void iavf_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring,
struct kernel_ethtool_ringparam *kernel_ring,
struct netlink_ext_ack *extack)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
ring->rx_max_pending = IAVF_MAX_RXD;
ring->tx_max_pending = IAVF_MAX_TXD;
ring->rx_pending = adapter->rx_desc_count;
ring->tx_pending = adapter->tx_desc_count;
}
/**
* iavf_set_ringparam - Set ring parameters
* @netdev: network interface device structure
* @ring: ethtool ringparam structure
*
* Sets ring parameters. TX and RX rings are controlled separately, but the
* number of rings is not specified, so all rings get the same settings.
**/
static int iavf_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring,
struct kernel_ethtool_ringparam *kernel_ring,
struct netlink_ext_ack *extack)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
u32 new_rx_count, new_tx_count;
if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
return -EINVAL;
if (ring->tx_pending > IAVF_MAX_TXD ||
ring->tx_pending < IAVF_MIN_TXD ||
ring->rx_pending > IAVF_MAX_RXD ||
ring->rx_pending < IAVF_MIN_RXD) {
netdev_err(netdev, "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d] (increment %d)\n",
ring->tx_pending, ring->rx_pending, IAVF_MIN_TXD,
IAVF_MAX_RXD, IAVF_REQ_DESCRIPTOR_MULTIPLE);
return -EINVAL;
}
new_tx_count = ALIGN(ring->tx_pending, IAVF_REQ_DESCRIPTOR_MULTIPLE);
if (new_tx_count != ring->tx_pending)
netdev_info(netdev, "Requested Tx descriptor count rounded up to %d\n",
new_tx_count);
new_rx_count = ALIGN(ring->rx_pending, IAVF_REQ_DESCRIPTOR_MULTIPLE);
if (new_rx_count != ring->rx_pending)
netdev_info(netdev, "Requested Rx descriptor count rounded up to %d\n",
new_rx_count);
/* if nothing to do return success */
if ((new_tx_count == adapter->tx_desc_count) &&
(new_rx_count == adapter->rx_desc_count)) {
netdev_dbg(netdev, "Nothing to change, descriptor count is same as requested\n");
return 0;
}
if (new_tx_count != adapter->tx_desc_count) {
netdev_info(netdev, "Changing Tx descriptor count from %d to %d\n",
adapter->tx_desc_count, new_tx_count);
adapter->tx_desc_count = new_tx_count;
}
if (new_rx_count != adapter->rx_desc_count) {
netdev_info(netdev, "Changing Rx descriptor count from %d to %d\n",
adapter->rx_desc_count, new_rx_count);
adapter->rx_desc_count = new_rx_count;
}
if (netif_running(netdev))
iavf_schedule_reset(adapter);
return 0;
}
/**
* __iavf_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 __iavf_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec, int queue)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
struct iavf_vsi *vsi = &adapter->vsi;
struct iavf_ring *rx_ring, *tx_ring;
ec->tx_max_coalesced_frames = vsi->work_limit;
ec->rx_max_coalesced_frames = vsi->work_limit;
/* Rx and Tx usecs 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 >= adapter->num_active_queues)
return -EINVAL;
rx_ring = &adapter->rx_rings[queue];
tx_ring = &adapter->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 & ~IAVF_ITR_DYNAMIC;
ec->tx_coalesce_usecs = tx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
return 0;
}
/**
* iavf_get_coalesce - Get interrupt coalescing settings
* @netdev: network interface device structure
* @ec: ethtool coalesce structure
*
* Returns current coalescing settings. This is referred to elsewhere in the
* driver as Interrupt Throttle Rate, as this is how the hardware describes
* this functionality. Note that if per-queue settings have been modified this
* only represents the settings of queue 0.
**/
static int iavf_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
return __iavf_get_coalesce(netdev, ec, -1);
}
#ifdef ETHTOOL_PERQUEUE
/**
* iavf_get_per_queue_coalesce - get coalesce values for specific queue
* @netdev: netdev to read
* @ec: coalesce settings from ethtool
* @queue: the queue to read
*
* Read specific queue's coalesce settings.
**/
static int iavf_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
struct ethtool_coalesce *ec)
{
return __iavf_get_coalesce(netdev, ec, queue);
}
#endif /* ETHTOOL_PERQUEUE */
/**
* iavf_set_itr_per_queue - set ITR values for specific queue
* @adapter: the VF adapter struct to set values for
* @ec: coalesce settings from ethtool
* @queue: the queue to modify
*
* Change the ITR settings for a specific queue.
**/
static int iavf_set_itr_per_queue(struct iavf_adapter *adapter,
struct ethtool_coalesce *ec, int queue)
{
struct iavf_ring *rx_ring = &adapter->rx_rings[queue];
struct iavf_ring *tx_ring = &adapter->tx_rings[queue];
struct iavf_q_vector *q_vector;
u16 itr_setting;
itr_setting = rx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
if (ec->rx_coalesce_usecs != itr_setting &&
ec->use_adaptive_rx_coalesce) {
netif_info(adapter, drv, adapter->netdev,
"Rx interrupt throttling cannot be changed if adaptive-rx is enabled\n");
return -EINVAL;
}
itr_setting = tx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
if (ec->tx_coalesce_usecs != itr_setting &&
ec->use_adaptive_tx_coalesce) {
netif_info(adapter, drv, adapter->netdev,
"Tx interrupt throttling cannot be changed if adaptive-tx is enabled\n");
return -EINVAL;
}
rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
rx_ring->itr_setting |= IAVF_ITR_DYNAMIC;
if (!ec->use_adaptive_rx_coalesce)
rx_ring->itr_setting ^= IAVF_ITR_DYNAMIC;
tx_ring->itr_setting |= IAVF_ITR_DYNAMIC;
if (!ec->use_adaptive_tx_coalesce)
tx_ring->itr_setting ^= IAVF_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.
*/
return 0;
}
/**
* __iavf_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 __iavf_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec, int queue)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
struct iavf_vsi *vsi = &adapter->vsi;
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 (ec->rx_coalesce_usecs == 0) {
if (ec->use_adaptive_rx_coalesce)
netif_info(adapter, drv, netdev, "rx-usecs=0, need to disable adaptive-rx for a complete disable\n");
} else if ((ec->rx_coalesce_usecs < IAVF_MIN_ITR) ||
(ec->rx_coalesce_usecs > IAVF_MAX_ITR)) {
netif_info(adapter, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
return -EINVAL;
}
if (ec->tx_coalesce_usecs == 0) {
if (ec->use_adaptive_tx_coalesce)
netif_info(adapter, drv, netdev, "tx-usecs=0, need to disable adaptive-tx for a complete disable\n");
} else if ((ec->tx_coalesce_usecs < IAVF_MIN_ITR) ||
(ec->tx_coalesce_usecs > IAVF_MAX_ITR)) {
netif_info(adapter, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
return -EINVAL;
}
/* 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 < adapter->num_active_queues; i++)
if (iavf_set_itr_per_queue(adapter, ec, i))
return -EINVAL;
} else if (queue < adapter->num_active_queues) {
if (iavf_set_itr_per_queue(adapter, ec, queue))
return -EINVAL;
} else {
netif_info(adapter, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
adapter->num_active_queues - 1);
return -EINVAL;
}
return 0;
}
/**
* iavf_set_coalesce - Set interrupt coalescing settings
* @netdev: network interface device structure
* @ec: ethtool coalesce structure
*
* Change current coalescing settings for every queue.
**/
static int iavf_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
return __iavf_set_coalesce(netdev, ec, -1);
}
#ifdef ETHTOOL_PERQUEUE
/**
* iavf_set_per_queue_coalesce - set specific queue's coalesce settings
* @netdev: the netdev to change
* @ec: ethtool's coalesce settings
* @queue: the queue to modify
*
* Modifies a specific queue's coalesce settings.
*/
static int iavf_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
struct ethtool_coalesce *ec)
{
return __iavf_set_coalesce(netdev, ec, queue);
}
#endif /* ETHTOOL_PERQUEUE */
#ifdef ETHTOOL_GRXRINGS
/**
* iavf_get_rxnfc - command to get RX flow classification rules
* @netdev: network interface device structure
* @cmd: ethtool rxnfc command
* @rule_locs: pointer to store rule locations
*
* Returns Success if the command is supported.
**/
static int iavf_get_rxnfc(struct net_device *netdev,
struct ethtool_rxnfc *cmd,
#ifdef HAVE_ETHTOOL_GET_RXNFC_VOID_RULE_LOCS
void *rule_locs)
#else
u32 *rule_locs)
#endif
{
struct iavf_adapter *adapter = netdev_priv(netdev);
int ret = -EOPNOTSUPP;
switch (cmd->cmd) {
case ETHTOOL_GRXRINGS:
cmd->data = adapter->num_active_queues;
ret = 0;
break;
case ETHTOOL_GRXFH:
netdev_info(netdev,
"RSS hash info is not available to vf, use pf.\n");
break;
default:
break;
}
return ret;
}
#endif /* ETHTOOL_GRXRINGS */
#ifdef ETHTOOL_GCHANNELS
/**
* iavf_get_channels: get the number of channels supported by the device
* @netdev: network interface device structure
* @ch: channel information structure
*
* For the purposes of our device, we only use combined channels, i.e. a tx/rx
* queue pair. Report one extra channel to match our "other" MSI-X vector.
**/
static void iavf_get_channels(struct net_device *netdev,
struct ethtool_channels *ch)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
/* Report maximum channels */
ch->max_combined = adapter->vsi_res->num_queue_pairs;
ch->max_other = NONQ_VECS;
ch->other_count = NONQ_VECS;
ch->combined_count = adapter->num_active_queues;
}
/**
* iavf_set_channels: set the new channel count
* @netdev: network interface device structure
* @ch: channel information structure
*
* Negotiate a new number of channels with the PF then do a reset. During
* reset we'll realloc queues and fix the RSS table. Returns 0 on success,
* negative on failure.
**/
static int iavf_set_channels(struct net_device *netdev,
struct ethtool_channels *ch)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
u32 num_req = ch->combined_count;
int i;
#ifdef __TC_MQPRIO_MODE_MAX
if (iavf_is_adq_enabled(adapter)) {
dev_info(&adapter->pdev->dev, "Cannot set channels since ADQ is enabled.\n");
return -EOPNOTSUPP;
}
#endif /* __TC_MQPRIO_MODE_MAX */
/* All of these should have already been checked by ethtool before this
* even gets to us, but just to be sure.
*/
if (num_req == 0 || num_req > adapter->vsi_res->num_queue_pairs)
return -EINVAL;
if (num_req == adapter->num_active_queues)
return 0;
if (ch->rx_count || ch->tx_count || ch->other_count != NONQ_VECS)
return -EINVAL;
adapter->num_req_queues = num_req;
adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED;
iavf_schedule_reset(adapter);
/* wait for the reset is done */
for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) {
msleep(IAVF_RESET_WAIT_MS);
if (adapter->flags & IAVF_FLAG_RESET_PENDING)
continue;
break;
}
if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) {
adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
adapter->num_active_queues = num_req;
return -EOPNOTSUPP;
}
return 0;
}
#endif /* ETHTOOL_GCHANNELS */
#if defined(ETHTOOL_GRSSH) && defined(ETHTOOL_SRSSH)
/**
* iavf_get_rxfh_key_size - get the RSS hash key size
* @netdev: network interface device structure
*
* Returns the table size.
**/
static u32 iavf_get_rxfh_key_size(struct net_device *netdev)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
return adapter->rss_key_size;
}
/**
* iavf_get_rxfh_indir_size - get the rx flow hash indirection table size
* @netdev: network interface device structure
*
* Returns the table size.
**/
static u32 iavf_get_rxfh_indir_size(struct net_device *netdev)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
return adapter->rss_lut_size;
}
/**
* iavf_get_rxfh - get the rx flow hash indirection table
* @netdev: network interface device structure
* @indir: indirection table
* @key: hash key
* @hfunc: hash function in use
*
* Reads the indirection table directly from the hardware. Always returns 0.
**/
#ifdef HAVE_RXFH_HASHFUNC
static int iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
u8 *hfunc)
#else
static int iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key)
#endif
{
struct iavf_adapter *adapter = netdev_priv(netdev);
u16 i;
#ifdef HAVE_RXFH_HASHFUNC
if (hfunc)
*hfunc = ETH_RSS_HASH_TOP;
#endif
if (key)
memcpy(key, adapter->rss_key, adapter->rss_key_size);
if (indir)
/* Each 32 bits pointed by 'indir' is stored with a lut entry */
for (i = 0; i < adapter->rss_lut_size; i++)
indir[i] = (u32)adapter->rss_lut[i];
return 0;
}
/**
* iavf_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 inavlid queue id, otherwise
* returns 0 after programming the table.
**/
#ifdef HAVE_RXFH_HASHFUNC
static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir,
const u8 *key, const u8 hfunc)
#else
#ifdef HAVE_RXFH_NONCONST
static int iavf_set_rxfh(struct net_device *netdev, u32 *indir, u8 *key)
#else
static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir,
const u8 *key)
#endif /* HAVE_RXFH_NONCONST */
#endif /* HAVE_RXFH_HASHFUNC */
{
struct iavf_adapter *adapter = netdev_priv(netdev);
u16 i;
#ifdef __TC_MQPRIO_MODE_MAX
if (iavf_is_adq_enabled(adapter)) {
dev_info(&adapter->pdev->dev,
"Change in RSS params is not supported when ADQ is configured.\n");
return -EOPNOTSUPP;
}
#endif /* __TC_MQPRIO_MODE_MAX */
#ifdef HAVE_RXFH_HASHFUNC
if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
#endif
if (!indir)
return 0;
/* Verify user input. */
for (i = 0; i < adapter->rss_lut_size; i++) {
if (indir[i] >= adapter->num_active_queues)
return -EINVAL;
}
if (key) {
memcpy(adapter->rss_key, key, adapter->rss_key_size);
}
/* Each 32 bits pointed by 'indir' is stored with a lut entry */
for (i = 0; i < adapter->rss_lut_size; i++)
adapter->rss_lut[i] = (u8)(indir[i]);
return iavf_config_rss(adapter);
}
#endif /* ETHTOOL_GRSSH && ETHTOOL_SRSSH */
#ifdef HAVE_ETHTOOL_GET_TS_INFO
#if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
/**
* iavf_get_ts_info - Report available timestamping capabilities
* @netdev: the netdevice to report for
* @info: structure to fill in
*
* Based on device features enabled, report the Tx and Rx timestamp
* capabilities, as well as the PTP hardware clock index to user space.
*/
static int iavf_get_ts_info(struct net_device *netdev, struct ethtool_ts_info *info)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE;
if (iavf_ptp_cap_supported(adapter, VIRTCHNL_1588_PTP_CAP_TX_TSTAMP)) {
info->so_timestamping |= SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;
info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
}
/* Rx timestamps are only supported on the flexible descriptors. Do
* not report support unless we both have the capability and
* configured with the appropriate descriptor format
*/
if (iavf_ptp_cap_supported(adapter, VIRTCHNL_1588_PTP_CAP_RX_TSTAMP) &&
adapter->rxdid == VIRTCHNL_RXDID_2_FLEX_SQ_NIC) {
info->so_timestamping |= SOF_TIMESTAMPING_RX_HARDWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;
info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_ALL);
}
if (adapter->ptp.initialized)
info->phc_index = ptp_clock_index(adapter->ptp.clock);
else
info->phc_index = -1;
return 0;
}
#endif /* CONFIG_PTP_1588_CLOCK */
#endif /* HAVE_ETHTOOL_GET_TS_INFO */
static const struct ethtool_ops iavf_ethtool_ops = {
#ifdef ETHTOOL_COALESCE_USECS
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_MAX_FRAMES |
ETHTOOL_COALESCE_MAX_FRAMES_IRQ |
ETHTOOL_COALESCE_USE_ADAPTIVE,
#endif /* ETHTOOL_COALESCE_USECS */
.get_drvinfo = iavf_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_ringparam = iavf_get_ringparam,
.set_ringparam = iavf_set_ringparam,
#ifndef HAVE_NDO_SET_FEATURES
.get_rx_csum = iavf_get_rx_csum,
.set_rx_csum = iavf_set_rx_csum,
.get_tx_csum = iavf_get_tx_csum,
.set_tx_csum = iavf_set_tx_csum,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
.set_tso = iavf_set_tso,
#endif /* HAVE_NDO_SET_FEATURES */
.get_strings = iavf_get_strings,
.get_ethtool_stats = iavf_get_ethtool_stats,
.get_sset_count = iavf_get_sset_count,
#ifdef HAVE_SWIOTLB_SKIP_CPU_SYNC
.get_priv_flags = iavf_get_priv_flags,
.set_priv_flags = iavf_set_priv_flags,
#endif
.get_msglevel = iavf_get_msglevel,
.set_msglevel = iavf_set_msglevel,
.get_coalesce = iavf_get_coalesce,
.set_coalesce = iavf_set_coalesce,
#ifdef ETHTOOL_PERQUEUE
.get_per_queue_coalesce = iavf_get_per_queue_coalesce,
.set_per_queue_coalesce = iavf_set_per_queue_coalesce,
#endif
#ifdef ETHTOOL_GRXRINGS
.get_rxnfc = iavf_get_rxnfc,
#endif
#ifndef HAVE_RHEL6_ETHTOOL_OPS_EXT_STRUCT
#if defined(ETHTOOL_GRSSH) && defined(ETHTOOL_SRSSH)
.get_rxfh_key_size = iavf_get_rxfh_key_size,
.get_rxfh_indir_size = iavf_get_rxfh_indir_size,
.get_rxfh = iavf_get_rxfh,
.set_rxfh = iavf_set_rxfh,
#endif /* ETHTOOL_GRSSH && ETHTOOL_SRSSH */
#ifdef ETHTOOL_GCHANNELS
.get_channels = iavf_get_channels,
.set_channels = iavf_set_channels,
#endif
#endif /* HAVE_RHEL6_ETHTOOL_OPS_EXT_STRUCT */
#ifdef ETHTOOL_GLINKSETTINGS
.get_link_ksettings = iavf_get_link_ksettings,
#else
.get_settings = iavf_get_settings,
#endif /* ETHTOOL_GLINKSETTINGS */
#ifdef HAVE_ETHTOOL_GET_TS_INFO
#if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
.get_ts_info = iavf_get_ts_info,
#endif
#endif
};
#ifdef HAVE_RHEL6_ETHTOOL_OPS_EXT_STRUCT
static const struct ethtool_ops_ext iavf_ethtool_ops_ext = {
.size = sizeof(struct ethtool_ops_ext),
.get_channels = iavf_get_channels,
.set_channels = iavf_set_channels,
#if defined(ETHTOOL_GRSSH) && defined(ETHTOOL_SRSSH)
.get_rxfh_key_size = iavf_get_rxfh_key_size,
.get_rxfh_indir_size = iavf_get_rxfh_indir_size,
.get_rxfh = iavf_get_rxfh,
.set_rxfh = iavf_set_rxfh,
#endif /* ETHTOOL_GRSSH && ETHTOOL_SRSSH */
};
#endif /* HAVE_RHEL6_ETHTOOL_OPS_EXT_STRUCT */
/**
* iavf_set_ethtool_ops - Initialize ethtool ops struct
* @netdev: network interface device structure
*
* Sets ethtool ops struct in our netdev so that ethtool can call
* our functions.
**/
void iavf_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &iavf_ethtool_ops;
#ifdef HAVE_RHEL6_ETHTOOL_OPS_EXT_STRUCT
set_ethtool_ops_ext(netdev, &iavf_ethtool_ops_ext);
#endif
}
#endif /* SIOCETHTOOL */
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