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linux/linux-5.4.31/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c

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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2015-2018 Netronome Systems, Inc. */
/*
* nfp_net_ethtool.c
* Netronome network device driver: ethtool support
* Authors: Jakub Kicinski <jakub.kicinski@netronome.com>
* Jason McMullan <jason.mcmullan@netronome.com>
* Rolf Neugebauer <rolf.neugebauer@netronome.com>
* Brad Petrus <brad.petrus@netronome.com>
*/
#include <linux/bitfield.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/ethtool.h>
#include <linux/firmware.h>
#include <linux/sfp.h>
#include "nfpcore/nfp.h"
#include "nfpcore/nfp_nsp.h"
#include "nfp_app.h"
#include "nfp_main.h"
#include "nfp_net_ctrl.h"
#include "nfp_net.h"
#include "nfp_port.h"
struct nfp_et_stat {
char name[ETH_GSTRING_LEN];
int off;
};
static const struct nfp_et_stat nfp_net_et_stats[] = {
/* Stats from the device */
{ "dev_rx_discards", NFP_NET_CFG_STATS_RX_DISCARDS },
{ "dev_rx_errors", NFP_NET_CFG_STATS_RX_ERRORS },
{ "dev_rx_bytes", NFP_NET_CFG_STATS_RX_OCTETS },
{ "dev_rx_uc_bytes", NFP_NET_CFG_STATS_RX_UC_OCTETS },
{ "dev_rx_mc_bytes", NFP_NET_CFG_STATS_RX_MC_OCTETS },
{ "dev_rx_bc_bytes", NFP_NET_CFG_STATS_RX_BC_OCTETS },
{ "dev_rx_pkts", NFP_NET_CFG_STATS_RX_FRAMES },
{ "dev_rx_mc_pkts", NFP_NET_CFG_STATS_RX_MC_FRAMES },
{ "dev_rx_bc_pkts", NFP_NET_CFG_STATS_RX_BC_FRAMES },
{ "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS },
{ "dev_tx_errors", NFP_NET_CFG_STATS_TX_ERRORS },
{ "dev_tx_bytes", NFP_NET_CFG_STATS_TX_OCTETS },
{ "dev_tx_uc_bytes", NFP_NET_CFG_STATS_TX_UC_OCTETS },
{ "dev_tx_mc_bytes", NFP_NET_CFG_STATS_TX_MC_OCTETS },
{ "dev_tx_bc_bytes", NFP_NET_CFG_STATS_TX_BC_OCTETS },
{ "dev_tx_pkts", NFP_NET_CFG_STATS_TX_FRAMES },
{ "dev_tx_mc_pkts", NFP_NET_CFG_STATS_TX_MC_FRAMES },
{ "dev_tx_bc_pkts", NFP_NET_CFG_STATS_TX_BC_FRAMES },
{ "bpf_pass_pkts", NFP_NET_CFG_STATS_APP0_FRAMES },
{ "bpf_pass_bytes", NFP_NET_CFG_STATS_APP0_BYTES },
/* see comments in outro functions in nfp_bpf_jit.c to find out
* how different BPF modes use app-specific counters
*/
{ "bpf_app1_pkts", NFP_NET_CFG_STATS_APP1_FRAMES },
{ "bpf_app1_bytes", NFP_NET_CFG_STATS_APP1_BYTES },
{ "bpf_app2_pkts", NFP_NET_CFG_STATS_APP2_FRAMES },
{ "bpf_app2_bytes", NFP_NET_CFG_STATS_APP2_BYTES },
{ "bpf_app3_pkts", NFP_NET_CFG_STATS_APP3_FRAMES },
{ "bpf_app3_bytes", NFP_NET_CFG_STATS_APP3_BYTES },
};
static const struct nfp_et_stat nfp_mac_et_stats[] = {
{ "rx_octets", NFP_MAC_STATS_RX_IN_OCTETS, },
{ "rx_frame_too_long_errors",
NFP_MAC_STATS_RX_FRAME_TOO_LONG_ERRORS, },
{ "rx_range_length_errors", NFP_MAC_STATS_RX_RANGE_LENGTH_ERRORS, },
{ "rx_vlan_received_ok", NFP_MAC_STATS_RX_VLAN_RECEIVED_OK, },
{ "rx_errors", NFP_MAC_STATS_RX_IN_ERRORS, },
{ "rx_broadcast_pkts", NFP_MAC_STATS_RX_IN_BROADCAST_PKTS, },
{ "rx_drop_events", NFP_MAC_STATS_RX_DROP_EVENTS, },
{ "rx_alignment_errors", NFP_MAC_STATS_RX_ALIGNMENT_ERRORS, },
{ "rx_pause_mac_ctrl_frames",
NFP_MAC_STATS_RX_PAUSE_MAC_CTRL_FRAMES, },
{ "rx_frames_received_ok", NFP_MAC_STATS_RX_FRAMES_RECEIVED_OK, },
{ "rx_frame_check_sequence_errors",
NFP_MAC_STATS_RX_FRAME_CHECK_SEQUENCE_ERRORS, },
{ "rx_unicast_pkts", NFP_MAC_STATS_RX_UNICAST_PKTS, },
{ "rx_multicast_pkts", NFP_MAC_STATS_RX_MULTICAST_PKTS, },
{ "rx_pkts", NFP_MAC_STATS_RX_PKTS, },
{ "rx_undersize_pkts", NFP_MAC_STATS_RX_UNDERSIZE_PKTS, },
{ "rx_pkts_64_octets", NFP_MAC_STATS_RX_PKTS_64_OCTETS, },
{ "rx_pkts_65_to_127_octets",
NFP_MAC_STATS_RX_PKTS_65_TO_127_OCTETS, },
{ "rx_pkts_128_to_255_octets",
NFP_MAC_STATS_RX_PKTS_128_TO_255_OCTETS, },
{ "rx_pkts_256_to_511_octets",
NFP_MAC_STATS_RX_PKTS_256_TO_511_OCTETS, },
{ "rx_pkts_512_to_1023_octets",
NFP_MAC_STATS_RX_PKTS_512_TO_1023_OCTETS, },
{ "rx_pkts_1024_to_1518_octets",
NFP_MAC_STATS_RX_PKTS_1024_TO_1518_OCTETS, },
{ "rx_pkts_1519_to_max_octets",
NFP_MAC_STATS_RX_PKTS_1519_TO_MAX_OCTETS, },
{ "rx_jabbers", NFP_MAC_STATS_RX_JABBERS, },
{ "rx_fragments", NFP_MAC_STATS_RX_FRAGMENTS, },
{ "rx_oversize_pkts", NFP_MAC_STATS_RX_OVERSIZE_PKTS, },
{ "rx_pause_frames_class0", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS0, },
{ "rx_pause_frames_class1", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS1, },
{ "rx_pause_frames_class2", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS2, },
{ "rx_pause_frames_class3", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS3, },
{ "rx_pause_frames_class4", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS4, },
{ "rx_pause_frames_class5", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS5, },
{ "rx_pause_frames_class6", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS6, },
{ "rx_pause_frames_class7", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS7, },
{ "rx_mac_ctrl_frames_received",
NFP_MAC_STATS_RX_MAC_CTRL_FRAMES_RECEIVED, },
{ "rx_mac_head_drop", NFP_MAC_STATS_RX_MAC_HEAD_DROP, },
{ "tx_queue_drop", NFP_MAC_STATS_TX_QUEUE_DROP, },
{ "tx_octets", NFP_MAC_STATS_TX_OUT_OCTETS, },
{ "tx_vlan_transmitted_ok", NFP_MAC_STATS_TX_VLAN_TRANSMITTED_OK, },
{ "tx_errors", NFP_MAC_STATS_TX_OUT_ERRORS, },
{ "tx_broadcast_pkts", NFP_MAC_STATS_TX_BROADCAST_PKTS, },
{ "tx_pause_mac_ctrl_frames",
NFP_MAC_STATS_TX_PAUSE_MAC_CTRL_FRAMES, },
{ "tx_frames_transmitted_ok",
NFP_MAC_STATS_TX_FRAMES_TRANSMITTED_OK, },
{ "tx_unicast_pkts", NFP_MAC_STATS_TX_UNICAST_PKTS, },
{ "tx_multicast_pkts", NFP_MAC_STATS_TX_MULTICAST_PKTS, },
{ "tx_pkts_64_octets", NFP_MAC_STATS_TX_PKTS_64_OCTETS, },
{ "tx_pkts_65_to_127_octets",
NFP_MAC_STATS_TX_PKTS_65_TO_127_OCTETS, },
{ "tx_pkts_128_to_255_octets",
NFP_MAC_STATS_TX_PKTS_128_TO_255_OCTETS, },
{ "tx_pkts_256_to_511_octets",
NFP_MAC_STATS_TX_PKTS_256_TO_511_OCTETS, },
{ "tx_pkts_512_to_1023_octets",
NFP_MAC_STATS_TX_PKTS_512_TO_1023_OCTETS, },
{ "tx_pkts_1024_to_1518_octets",
NFP_MAC_STATS_TX_PKTS_1024_TO_1518_OCTETS, },
{ "tx_pkts_1519_to_max_octets",
NFP_MAC_STATS_TX_PKTS_1519_TO_MAX_OCTETS, },
{ "tx_pause_frames_class0", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS0, },
{ "tx_pause_frames_class1", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS1, },
{ "tx_pause_frames_class2", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS2, },
{ "tx_pause_frames_class3", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS3, },
{ "tx_pause_frames_class4", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS4, },
{ "tx_pause_frames_class5", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS5, },
{ "tx_pause_frames_class6", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS6, },
{ "tx_pause_frames_class7", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS7, },
};
#define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats)
#define NN_ET_SWITCH_STATS_LEN 9
#define NN_RVEC_GATHER_STATS 13
#define NN_RVEC_PER_Q_STATS 3
#define NN_CTRL_PATH_STATS 1
#define SFP_SFF_REV_COMPLIANCE 1
static void nfp_net_get_nspinfo(struct nfp_app *app, char *version)
{
struct nfp_nsp *nsp;
if (!app)
return;
nsp = nfp_nsp_open(app->cpp);
if (IS_ERR(nsp))
return;
snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu",
nfp_nsp_get_abi_ver_major(nsp),
nfp_nsp_get_abi_ver_minor(nsp));
nfp_nsp_close(nsp);
}
static void
nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev,
const char *vnic_version, struct ethtool_drvinfo *drvinfo)
{
char nsp_version[ETHTOOL_FWVERS_LEN] = {};
strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver));
strlcpy(drvinfo->version, nfp_driver_version, sizeof(drvinfo->version));
nfp_net_get_nspinfo(app, nsp_version);
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
"%s %s %s %s", vnic_version, nsp_version,
nfp_app_mip_name(app), nfp_app_name(app));
}
static void
nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
{
char vnic_version[ETHTOOL_FWVERS_LEN] = {};
struct nfp_net *nn = netdev_priv(netdev);
snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d",
nn->fw_ver.resv, nn->fw_ver.class,
nn->fw_ver.major, nn->fw_ver.minor);
strlcpy(drvinfo->bus_info, pci_name(nn->pdev),
sizeof(drvinfo->bus_info));
nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo);
}
static void
nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
strlcpy(drvinfo->bus_info, pci_name(app->pdev),
sizeof(drvinfo->bus_info));
nfp_get_drvinfo(app, app->pdev, "*", drvinfo);
}
static void
nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port,
struct ethtool_link_ksettings *c)
{
unsigned int modes;
ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE);
if (!nfp_eth_can_support_fec(eth_port)) {
ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE);
return;
}
modes = nfp_eth_supported_fec_modes(eth_port);
if (modes & NFP_FEC_BASER) {
ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER);
ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER);
}
if (modes & NFP_FEC_REED_SOLOMON) {
ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS);
ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS);
}
}
/**
* nfp_net_get_link_ksettings - Get Link Speed settings
* @netdev: network interface device structure
* @cmd: ethtool command
*
* Reports speed settings based on info in the BAR provided by the fw.
*/
static int
nfp_net_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
static const u32 ls_to_ethtool[] = {
[NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0,
[NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN,
[NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000,
[NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000,
[NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000,
[NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000,
[NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000,
[NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000,
};
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
struct nfp_net *nn;
u32 sts, ls;
/* Init to unknowns */
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
cmd->base.port = PORT_OTHER;
cmd->base.speed = SPEED_UNKNOWN;
cmd->base.duplex = DUPLEX_UNKNOWN;
port = nfp_port_from_netdev(netdev);
eth_port = nfp_port_get_eth_port(port);
if (eth_port) {
cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ?
AUTONEG_ENABLE : AUTONEG_DISABLE;
nfp_net_set_fec_link_mode(eth_port, cmd);
}
if (!netif_carrier_ok(netdev))
return 0;
/* Use link speed from ETH table if available, otherwise try the BAR */
if (eth_port) {
cmd->base.port = eth_port->port_type;
cmd->base.speed = eth_port->speed;
cmd->base.duplex = DUPLEX_FULL;
return 0;
}
if (!nfp_netdev_is_nfp_net(netdev))
return -EOPNOTSUPP;
nn = netdev_priv(netdev);
sts = nn_readl(nn, NFP_NET_CFG_STS);
ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts);
if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED)
return -EOPNOTSUPP;
if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN ||
ls >= ARRAY_SIZE(ls_to_ethtool))
return 0;
cmd->base.speed = ls_to_ethtool[ls];
cmd->base.duplex = DUPLEX_FULL;
return 0;
}
static int
nfp_net_set_link_ksettings(struct net_device *netdev,
const struct ethtool_link_ksettings *cmd)
{
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
struct nfp_nsp *nsp;
int err;
port = nfp_port_from_netdev(netdev);
eth_port = __nfp_port_get_eth_port(port);
if (!eth_port)
return -EOPNOTSUPP;
if (netif_running(netdev)) {
netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n");
return -EBUSY;
}
nsp = nfp_eth_config_start(port->app->cpp, eth_port->index);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ?
NFP_ANEG_AUTO : NFP_ANEG_DISABLED);
if (err)
goto err_bad_set;
if (cmd->base.speed != SPEED_UNKNOWN) {
u32 speed = cmd->base.speed / eth_port->lanes;
err = __nfp_eth_set_speed(nsp, speed);
if (err)
goto err_bad_set;
}
err = nfp_eth_config_commit_end(nsp);
if (err > 0)
return 0; /* no change */
nfp_net_refresh_port_table(port);
return err;
err_bad_set:
nfp_eth_config_cleanup_end(nsp);
return err;
}
static void nfp_net_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct nfp_net *nn = netdev_priv(netdev);
ring->rx_max_pending = NFP_NET_MAX_RX_DESCS;
ring->tx_max_pending = NFP_NET_MAX_TX_DESCS;
ring->rx_pending = nn->dp.rxd_cnt;
ring->tx_pending = nn->dp.txd_cnt;
}
static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt)
{
struct nfp_net_dp *dp;
dp = nfp_net_clone_dp(nn);
if (!dp)
return -ENOMEM;
dp->rxd_cnt = rxd_cnt;
dp->txd_cnt = txd_cnt;
return nfp_net_ring_reconfig(nn, dp, NULL);
}
static int nfp_net_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct nfp_net *nn = netdev_priv(netdev);
u32 rxd_cnt, txd_cnt;
/* We don't have separate queues/rings for small/large frames. */
if (ring->rx_mini_pending || ring->rx_jumbo_pending)
return -EINVAL;
/* Round up to supported values */
rxd_cnt = roundup_pow_of_two(ring->rx_pending);
txd_cnt = roundup_pow_of_two(ring->tx_pending);
if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS ||
txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS)
return -EINVAL;
if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt)
return 0;
nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n",
nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt);
return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt);
}
__printf(2, 3) u8 *nfp_pr_et(u8 *data, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vsnprintf(data, ETH_GSTRING_LEN, fmt, args);
va_end(args);
return data + ETH_GSTRING_LEN;
}
static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev)
{
struct nfp_net *nn = netdev_priv(netdev);
return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS +
NN_CTRL_PATH_STATS;
}
static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data)
{
struct nfp_net *nn = netdev_priv(netdev);
int i;
for (i = 0; i < nn->max_r_vecs; i++) {
data = nfp_pr_et(data, "rvec_%u_rx_pkts", i);
data = nfp_pr_et(data, "rvec_%u_tx_pkts", i);
data = nfp_pr_et(data, "rvec_%u_tx_busy", i);
}
data = nfp_pr_et(data, "hw_rx_csum_ok");
data = nfp_pr_et(data, "hw_rx_csum_inner_ok");
data = nfp_pr_et(data, "hw_rx_csum_complete");
data = nfp_pr_et(data, "hw_rx_csum_err");
data = nfp_pr_et(data, "rx_replace_buf_alloc_fail");
data = nfp_pr_et(data, "rx_tls_decrypted_packets");
data = nfp_pr_et(data, "hw_tx_csum");
data = nfp_pr_et(data, "hw_tx_inner_csum");
data = nfp_pr_et(data, "tx_gather");
data = nfp_pr_et(data, "tx_lso");
data = nfp_pr_et(data, "tx_tls_encrypted_packets");
data = nfp_pr_et(data, "tx_tls_ooo");
data = nfp_pr_et(data, "tx_tls_drop_no_sync_data");
data = nfp_pr_et(data, "hw_tls_no_space");
return data;
}
static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data)
{
u64 gathered_stats[NN_RVEC_GATHER_STATS] = {};
struct nfp_net *nn = netdev_priv(netdev);
u64 tmp[NN_RVEC_GATHER_STATS];
unsigned int i, j;
for (i = 0; i < nn->max_r_vecs; i++) {
unsigned int start;
do {
start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync);
data[0] = nn->r_vecs[i].rx_pkts;
tmp[0] = nn->r_vecs[i].hw_csum_rx_ok;
tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok;
tmp[2] = nn->r_vecs[i].hw_csum_rx_complete;
tmp[3] = nn->r_vecs[i].hw_csum_rx_error;
tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail;
tmp[5] = nn->r_vecs[i].hw_tls_rx;
} while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start));
do {
start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync);
data[1] = nn->r_vecs[i].tx_pkts;
data[2] = nn->r_vecs[i].tx_busy;
tmp[6] = nn->r_vecs[i].hw_csum_tx;
tmp[7] = nn->r_vecs[i].hw_csum_tx_inner;
tmp[8] = nn->r_vecs[i].tx_gather;
tmp[9] = nn->r_vecs[i].tx_lso;
tmp[10] = nn->r_vecs[i].hw_tls_tx;
tmp[11] = nn->r_vecs[i].tls_tx_fallback;
tmp[12] = nn->r_vecs[i].tls_tx_no_fallback;
} while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start));
data += NN_RVEC_PER_Q_STATS;
for (j = 0; j < NN_RVEC_GATHER_STATS; j++)
gathered_stats[j] += tmp[j];
}
for (j = 0; j < NN_RVEC_GATHER_STATS; j++)
*data++ = gathered_stats[j];
*data++ = atomic_read(&nn->ktls_no_space);
return data;
}
static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs)
{
return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4;
}
static u8 *
nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr)
{
int swap_off, i;
BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2);
/* If repr is true first add SWITCH_STATS_LEN and then subtract it
* effectively swapping the RX and TX statistics (giving us the RX
* and TX from perspective of the switch).
*/
swap_off = repr * NN_ET_SWITCH_STATS_LEN;
for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++)
data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name);
for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++)
data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name);
for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++)
data = nfp_pr_et(data, nfp_net_et_stats[i].name);
for (i = 0; i < num_vecs; i++) {
data = nfp_pr_et(data, "rxq_%u_pkts", i);
data = nfp_pr_et(data, "rxq_%u_bytes", i);
data = nfp_pr_et(data, "txq_%u_pkts", i);
data = nfp_pr_et(data, "txq_%u_bytes", i);
}
return data;
}
static u64 *
nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs)
{
unsigned int i;
for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++)
*data++ = readq(mem + nfp_net_et_stats[i].off);
for (i = 0; i < num_vecs; i++) {
*data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i));
*data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8);
*data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i));
*data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8);
}
return data;
}
static unsigned int nfp_mac_get_stats_count(struct net_device *netdev)
{
struct nfp_port *port;
port = nfp_port_from_netdev(netdev);
if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
return 0;
return ARRAY_SIZE(nfp_mac_et_stats);
}
static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data)
{
struct nfp_port *port;
unsigned int i;
port = nfp_port_from_netdev(netdev);
if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
return data;
for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++)
data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name);
return data;
}
static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data)
{
struct nfp_port *port;
unsigned int i;
port = nfp_port_from_netdev(netdev);
if (!__nfp_port_get_eth_port(port) || !port->eth_stats)
return data;
for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++)
*data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off);
return data;
}
static void nfp_net_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
struct nfp_net *nn = netdev_priv(netdev);
switch (stringset) {
case ETH_SS_STATS:
data = nfp_vnic_get_sw_stats_strings(netdev, data);
data = nfp_vnic_get_hw_stats_strings(data, nn->max_r_vecs,
false);
data = nfp_mac_get_stats_strings(netdev, data);
data = nfp_app_port_get_stats_strings(nn->port, data);
break;
}
}
static void
nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
u64 *data)
{
struct nfp_net *nn = netdev_priv(netdev);
data = nfp_vnic_get_sw_stats(netdev, data);
data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, nn->max_r_vecs);
data = nfp_mac_get_stats(netdev, data);
data = nfp_app_port_get_stats(nn->port, data);
}
static int nfp_net_get_sset_count(struct net_device *netdev, int sset)
{
struct nfp_net *nn = netdev_priv(netdev);
switch (sset) {
case ETH_SS_STATS:
return nfp_vnic_get_sw_stats_count(netdev) +
nfp_vnic_get_hw_stats_count(nn->max_r_vecs) +
nfp_mac_get_stats_count(netdev) +
nfp_app_port_get_stats_count(nn->port);
default:
return -EOPNOTSUPP;
}
}
static void nfp_port_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
struct nfp_port *port = nfp_port_from_netdev(netdev);
switch (stringset) {
case ETH_SS_STATS:
if (nfp_port_is_vnic(port))
data = nfp_vnic_get_hw_stats_strings(data, 0, true);
else
data = nfp_mac_get_stats_strings(netdev, data);
data = nfp_app_port_get_stats_strings(port, data);
break;
}
}
static void
nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
u64 *data)
{
struct nfp_port *port = nfp_port_from_netdev(netdev);
if (nfp_port_is_vnic(port))
data = nfp_vnic_get_hw_stats(data, port->vnic, 0);
else
data = nfp_mac_get_stats(netdev, data);
data = nfp_app_port_get_stats(port, data);
}
static int nfp_port_get_sset_count(struct net_device *netdev, int sset)
{
struct nfp_port *port = nfp_port_from_netdev(netdev);
unsigned int count;
switch (sset) {
case ETH_SS_STATS:
if (nfp_port_is_vnic(port))
count = nfp_vnic_get_hw_stats_count(0);
else
count = nfp_mac_get_stats_count(netdev);
count += nfp_app_port_get_stats_count(port);
return count;
default:
return -EOPNOTSUPP;
}
}
static int nfp_port_fec_ethtool_to_nsp(u32 fec)
{
switch (fec) {
case ETHTOOL_FEC_AUTO:
return NFP_FEC_AUTO_BIT;
case ETHTOOL_FEC_OFF:
return NFP_FEC_DISABLED_BIT;
case ETHTOOL_FEC_RS:
return NFP_FEC_REED_SOLOMON_BIT;
case ETHTOOL_FEC_BASER:
return NFP_FEC_BASER_BIT;
default:
/* NSP only supports a single mode at a time */
return -EOPNOTSUPP;
}
}
static u32 nfp_port_fec_nsp_to_ethtool(u32 fec)
{
u32 result = 0;
if (fec & NFP_FEC_AUTO)
result |= ETHTOOL_FEC_AUTO;
if (fec & NFP_FEC_BASER)
result |= ETHTOOL_FEC_BASER;
if (fec & NFP_FEC_REED_SOLOMON)
result |= ETHTOOL_FEC_RS;
if (fec & NFP_FEC_DISABLED)
result |= ETHTOOL_FEC_OFF;
return result ?: ETHTOOL_FEC_NONE;
}
static int
nfp_port_get_fecparam(struct net_device *netdev,
struct ethtool_fecparam *param)
{
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
param->active_fec = ETHTOOL_FEC_NONE_BIT;
param->fec = ETHTOOL_FEC_NONE_BIT;
port = nfp_port_from_netdev(netdev);
eth_port = nfp_port_get_eth_port(port);
if (!eth_port)
return -EOPNOTSUPP;
if (!nfp_eth_can_support_fec(eth_port))
return 0;
param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported);
param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec);
return 0;
}
static int
nfp_port_set_fecparam(struct net_device *netdev,
struct ethtool_fecparam *param)
{
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
int err, fec;
port = nfp_port_from_netdev(netdev);
eth_port = nfp_port_get_eth_port(port);
if (!eth_port)
return -EOPNOTSUPP;
if (!nfp_eth_can_support_fec(eth_port))
return -EOPNOTSUPP;
fec = nfp_port_fec_ethtool_to_nsp(param->fec);
if (fec < 0)
return fec;
err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec);
if (!err)
/* Only refresh if we did something */
nfp_net_refresh_port_table(port);
return err < 0 ? err : 0;
}
/* RX network flow classification (RSS, filters, etc)
*/
static u32 ethtool_flow_to_nfp_flag(u32 flow_type)
{
static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = {
[TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP,
[TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP,
[UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP,
[UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP,
[IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4,
[IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6,
};
if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp))
return 0;
return xlate_ethtool_to_nfp[flow_type];
}
static int nfp_net_get_rss_hash_opts(struct nfp_net *nn,
struct ethtool_rxnfc *cmd)
{
u32 nfp_rss_flag;
cmd->data = 0;
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
return -EOPNOTSUPP;
nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type);
if (!nfp_rss_flag)
return -EINVAL;
cmd->data |= RXH_IP_SRC | RXH_IP_DST;
if (nn->rss_cfg & nfp_rss_flag)
cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
return 0;
}
static int nfp_net_get_rxnfc(struct net_device *netdev,
struct ethtool_rxnfc *cmd, u32 *rule_locs)
{
struct nfp_net *nn = netdev_priv(netdev);
switch (cmd->cmd) {
case ETHTOOL_GRXRINGS:
cmd->data = nn->dp.num_rx_rings;
return 0;
case ETHTOOL_GRXFH:
return nfp_net_get_rss_hash_opts(nn, cmd);
default:
return -EOPNOTSUPP;
}
}
static int nfp_net_set_rss_hash_opt(struct nfp_net *nn,
struct ethtool_rxnfc *nfc)
{
u32 new_rss_cfg = nn->rss_cfg;
u32 nfp_rss_flag;
int err;
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
return -EOPNOTSUPP;
/* RSS only supports IP SA/DA and L4 src/dst ports */
if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
RXH_L4_B_0_1 | RXH_L4_B_2_3))
return -EINVAL;
/* We need at least the IP SA/DA fields for hashing */
if (!(nfc->data & RXH_IP_SRC) ||
!(nfc->data & RXH_IP_DST))
return -EINVAL;
nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type);
if (!nfp_rss_flag)
return -EINVAL;
switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
case 0:
new_rss_cfg &= ~nfp_rss_flag;
break;
case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
new_rss_cfg |= nfp_rss_flag;
break;
default:
return -EINVAL;
}
new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc);
new_rss_cfg |= NFP_NET_CFG_RSS_MASK;
if (new_rss_cfg == nn->rss_cfg)
return 0;
writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL);
err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
if (err)
return err;
nn->rss_cfg = new_rss_cfg;
nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg);
return 0;
}
static int nfp_net_set_rxnfc(struct net_device *netdev,
struct ethtool_rxnfc *cmd)
{
struct nfp_net *nn = netdev_priv(netdev);
switch (cmd->cmd) {
case ETHTOOL_SRXFH:
return nfp_net_set_rss_hash_opt(nn, cmd);
default:
return -EOPNOTSUPP;
}
}
static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev)
{
struct nfp_net *nn = netdev_priv(netdev);
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
return 0;
return ARRAY_SIZE(nn->rss_itbl);
}
static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev)
{
struct nfp_net *nn = netdev_priv(netdev);
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
return -EOPNOTSUPP;
return nfp_net_rss_key_sz(nn);
}
static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
u8 *hfunc)
{
struct nfp_net *nn = netdev_priv(netdev);
int i;
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))
return -EOPNOTSUPP;
if (indir)
for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
indir[i] = nn->rss_itbl[i];
if (key)
memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn));
if (hfunc) {
*hfunc = nn->rss_hfunc;
if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT)
*hfunc = ETH_RSS_HASH_UNKNOWN;
}
return 0;
}
static int nfp_net_set_rxfh(struct net_device *netdev,
const u32 *indir, const u8 *key,
const u8 hfunc)
{
struct nfp_net *nn = netdev_priv(netdev);
int i;
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) ||
!(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc))
return -EOPNOTSUPP;
if (!key && !indir)
return 0;
if (key) {
memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn));
nfp_net_rss_write_key(nn);
}
if (indir) {
for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
nn->rss_itbl[i] = indir[i];
nfp_net_rss_write_itbl(nn);
}
return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
}
/* Dump BAR registers
*/
static int nfp_net_get_regs_len(struct net_device *netdev)
{
return NFP_NET_CFG_BAR_SZ;
}
static void nfp_net_get_regs(struct net_device *netdev,
struct ethtool_regs *regs, void *p)
{
struct nfp_net *nn = netdev_priv(netdev);
u32 *regs_buf = p;
int i;
regs->version = nn_readl(nn, NFP_NET_CFG_VERSION);
for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++)
regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32)));
}
static int nfp_net_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec)
{
struct nfp_net *nn = netdev_priv(netdev);
if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
return -EINVAL;
ec->rx_coalesce_usecs = nn->rx_coalesce_usecs;
ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames;
ec->tx_coalesce_usecs = nn->tx_coalesce_usecs;
ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames;
return 0;
}
/* Other debug dumps
*/
static int
nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer)
{
struct nfp_resource *res;
int ret;
if (!app)
return -EOPNOTSUPP;
dump->version = 1;
dump->flag = NFP_DUMP_NSP_DIAG;
res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG);
if (IS_ERR(res))
return PTR_ERR(res);
if (buffer) {
if (dump->len != nfp_resource_size(res)) {
ret = -EINVAL;
goto exit_release;
}
ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res),
nfp_resource_address(res),
buffer, dump->len);
if (ret != dump->len)
ret = ret < 0 ? ret : -EIO;
else
ret = 0;
} else {
dump->len = nfp_resource_size(res);
ret = 0;
}
exit_release:
nfp_resource_release(res);
return ret;
}
/* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV
* based dumps), since flag 0 (default) calculates the length in
* nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump
* without setting the flag first, for backward compatibility.
*/
static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
s64 len;
if (!app)
return -EOPNOTSUPP;
if (val->flag == NFP_DUMP_NSP_DIAG) {
app->pf->dump_flag = val->flag;
return 0;
}
if (!app->pf->dumpspec)
return -EOPNOTSUPP;
len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec,
val->flag);
if (len < 0)
return len;
app->pf->dump_flag = val->flag;
app->pf->dump_len = len;
return 0;
}
static int
nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
if (!app)
return -EOPNOTSUPP;
if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG)
return nfp_dump_nsp_diag(app, dump, NULL);
dump->flag = app->pf->dump_flag;
dump->len = app->pf->dump_len;
return 0;
}
static int
nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump,
void *buffer)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
if (!app)
return -EOPNOTSUPP;
if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG)
return nfp_dump_nsp_diag(app, dump, buffer);
dump->flag = app->pf->dump_flag;
dump->len = app->pf->dump_len;
return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump,
buffer);
}
static int
nfp_port_get_module_info(struct net_device *netdev,
struct ethtool_modinfo *modinfo)
{
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
unsigned int read_len;
struct nfp_nsp *nsp;
int err = 0;
u8 data;
port = nfp_port_from_netdev(netdev);
eth_port = nfp_port_get_eth_port(port);
if (!eth_port)
return -EOPNOTSUPP;
nsp = nfp_nsp_open(port->app->cpp);
if (IS_ERR(nsp)) {
err = PTR_ERR(nsp);
netdev_err(netdev, "Failed to access the NSP: %d\n", err);
return err;
}
if (!nfp_nsp_has_read_module_eeprom(nsp)) {
netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n");
err = -EOPNOTSUPP;
goto exit_close_nsp;
}
switch (eth_port->interface) {
case NFP_INTERFACE_SFP:
case NFP_INTERFACE_SFP28:
err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
SFP_SFF8472_COMPLIANCE, &data,
1, &read_len);
if (err < 0)
goto exit_close_nsp;
if (!data) {
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 NFP_INTERFACE_QSFP:
err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
SFP_SFF_REV_COMPLIANCE, &data,
1, &read_len);
if (err < 0)
goto exit_close_nsp;
if (data < 0x3) {
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
} else {
modinfo->type = ETH_MODULE_SFF_8636;
modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
}
break;
case NFP_INTERFACE_QSFP28:
modinfo->type = ETH_MODULE_SFF_8636;
modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
break;
default:
netdev_err(netdev, "Unsupported module 0x%x detected\n",
eth_port->interface);
err = -EINVAL;
}
exit_close_nsp:
nfp_nsp_close(nsp);
return err;
}
static int
nfp_port_get_module_eeprom(struct net_device *netdev,
struct ethtool_eeprom *eeprom, u8 *data)
{
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
struct nfp_nsp *nsp;
int err;
port = nfp_port_from_netdev(netdev);
eth_port = __nfp_port_get_eth_port(port);
if (!eth_port)
return -EOPNOTSUPP;
nsp = nfp_nsp_open(port->app->cpp);
if (IS_ERR(nsp)) {
err = PTR_ERR(nsp);
netdev_err(netdev, "Failed to access the NSP: %d\n", err);
return err;
}
if (!nfp_nsp_has_read_module_eeprom(nsp)) {
netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n");
err = -EOPNOTSUPP;
goto exit_close_nsp;
}
err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index,
eeprom->offset, data, eeprom->len,
&eeprom->len);
if (err < 0) {
if (eeprom->len) {
netdev_warn(netdev,
"Incomplete read from module EEPROM: %d\n",
err);
err = 0;
} else {
netdev_err(netdev,
"Reading from module EEPROM failed: %d\n",
err);
}
}
exit_close_nsp:
nfp_nsp_close(nsp);
return err;
}
static int nfp_net_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec)
{
struct nfp_net *nn = netdev_priv(netdev);
unsigned int factor;
if (ec->rx_coalesce_usecs_irq ||
ec->rx_max_coalesced_frames_irq ||
ec->tx_coalesce_usecs_irq ||
ec->tx_max_coalesced_frames_irq ||
ec->stats_block_coalesce_usecs ||
ec->use_adaptive_rx_coalesce ||
ec->use_adaptive_tx_coalesce ||
ec->pkt_rate_low ||
ec->rx_coalesce_usecs_low ||
ec->rx_max_coalesced_frames_low ||
ec->tx_coalesce_usecs_low ||
ec->tx_max_coalesced_frames_low ||
ec->pkt_rate_high ||
ec->rx_coalesce_usecs_high ||
ec->rx_max_coalesced_frames_high ||
ec->tx_coalesce_usecs_high ||
ec->tx_max_coalesced_frames_high ||
ec->rate_sample_interval)
return -EOPNOTSUPP;
/* Compute factor used to convert coalesce '_usecs' parameters to
* ME timestamp ticks. There are 16 ME clock cycles for each timestamp
* count.
*/
factor = nn->me_freq_mhz / 16;
/* Each pair of (usecs, max_frames) fields specifies that interrupts
* should be coalesced until
* (usecs > 0 && time_since_first_completion >= usecs) ||
* (max_frames > 0 && completed_frames >= max_frames)
*
* It is illegal to set both usecs and max_frames to zero as this would
* cause interrupts to never be generated. To disable coalescing, set
* usecs = 0 and max_frames = 1.
*
* Some implementations ignore the value of max_frames and use the
* condition time_since_first_completion >= usecs
*/
if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
return -EINVAL;
/* ensure valid configuration */
if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames)
return -EINVAL;
if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames)
return -EINVAL;
if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1))
return -EINVAL;
if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1))
return -EINVAL;
if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1))
return -EINVAL;
if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1))
return -EINVAL;
/* configuration is valid */
nn->rx_coalesce_usecs = ec->rx_coalesce_usecs;
nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames;
nn->tx_coalesce_usecs = ec->tx_coalesce_usecs;
nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames;
/* write configuration to device */
nfp_net_coalesce_write_cfg(nn);
return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD);
}
static void nfp_net_get_channels(struct net_device *netdev,
struct ethtool_channels *channel)
{
struct nfp_net *nn = netdev_priv(netdev);
unsigned int num_tx_rings;
num_tx_rings = nn->dp.num_tx_rings;
if (nn->dp.xdp_prog)
num_tx_rings -= nn->dp.num_rx_rings;
channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs);
channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs);
channel->max_combined = min(channel->max_rx, channel->max_tx);
channel->max_other = NFP_NET_NON_Q_VECTORS;
channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings);
channel->rx_count = nn->dp.num_rx_rings - channel->combined_count;
channel->tx_count = num_tx_rings - channel->combined_count;
channel->other_count = NFP_NET_NON_Q_VECTORS;
}
static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx,
unsigned int total_tx)
{
struct nfp_net_dp *dp;
dp = nfp_net_clone_dp(nn);
if (!dp)
return -ENOMEM;
dp->num_rx_rings = total_rx;
dp->num_tx_rings = total_tx;
/* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */
if (dp->xdp_prog)
dp->num_tx_rings += total_rx;
return nfp_net_ring_reconfig(nn, dp, NULL);
}
static int nfp_net_set_channels(struct net_device *netdev,
struct ethtool_channels *channel)
{
struct nfp_net *nn = netdev_priv(netdev);
unsigned int total_rx, total_tx;
/* Reject unsupported */
if (!channel->combined_count ||
channel->other_count != NFP_NET_NON_Q_VECTORS ||
(channel->rx_count && channel->tx_count))
return -EINVAL;
total_rx = channel->combined_count + channel->rx_count;
total_tx = channel->combined_count + channel->tx_count;
if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) ||
total_tx > min(nn->max_tx_rings, nn->max_r_vecs))
return -EINVAL;
return nfp_net_set_num_rings(nn, total_rx, total_tx);
}
static const struct ethtool_ops nfp_net_ethtool_ops = {
.get_drvinfo = nfp_net_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_ringparam = nfp_net_get_ringparam,
.set_ringparam = nfp_net_set_ringparam,
.get_strings = nfp_net_get_strings,
.get_ethtool_stats = nfp_net_get_stats,
.get_sset_count = nfp_net_get_sset_count,
.get_rxnfc = nfp_net_get_rxnfc,
.set_rxnfc = nfp_net_set_rxnfc,
.get_rxfh_indir_size = nfp_net_get_rxfh_indir_size,
.get_rxfh_key_size = nfp_net_get_rxfh_key_size,
.get_rxfh = nfp_net_get_rxfh,
.set_rxfh = nfp_net_set_rxfh,
.get_regs_len = nfp_net_get_regs_len,
.get_regs = nfp_net_get_regs,
.set_dump = nfp_app_set_dump,
.get_dump_flag = nfp_app_get_dump_flag,
.get_dump_data = nfp_app_get_dump_data,
.get_module_info = nfp_port_get_module_info,
.get_module_eeprom = nfp_port_get_module_eeprom,
.get_coalesce = nfp_net_get_coalesce,
.set_coalesce = nfp_net_set_coalesce,
.get_channels = nfp_net_get_channels,
.set_channels = nfp_net_set_channels,
.get_link_ksettings = nfp_net_get_link_ksettings,
.set_link_ksettings = nfp_net_set_link_ksettings,
.get_fecparam = nfp_port_get_fecparam,
.set_fecparam = nfp_port_set_fecparam,
};
const struct ethtool_ops nfp_port_ethtool_ops = {
.get_drvinfo = nfp_app_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_strings = nfp_port_get_strings,
.get_ethtool_stats = nfp_port_get_stats,
.get_sset_count = nfp_port_get_sset_count,
.set_dump = nfp_app_set_dump,
.get_dump_flag = nfp_app_get_dump_flag,
.get_dump_data = nfp_app_get_dump_data,
.get_module_info = nfp_port_get_module_info,
.get_module_eeprom = nfp_port_get_module_eeprom,
.get_link_ksettings = nfp_net_get_link_ksettings,
.set_link_ksettings = nfp_net_set_link_ksettings,
.get_fecparam = nfp_port_get_fecparam,
.set_fecparam = nfp_port_set_fecparam,
};
void nfp_net_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &nfp_net_ethtool_ops;
}
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