/*
* Copyright (C) 2015-2017 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* 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 "nfpcore/nfp.h"
#include "nfpcore/nfp_nsp.h"
#include "nfp_net_ctrl.h"
#include "nfp_net.h"
enum nfp_dump_diag {
NFP_DUMP_NSP_DIAG = 0,
};
/* Support for stats. Returns netdev, driver, and device stats */
enum { NETDEV_ET_STATS, NFP_NET_DRV_ET_STATS, NFP_NET_DEV_ET_STATS };
struct _nfp_net_et_stats {
char name[ETH_GSTRING_LEN];
int type;
int sz;
int off;
};
#define NN_ET_NETDEV_STAT(m) NETDEV_ET_STATS, \
FIELD_SIZEOF(struct net_device_stats, m), \
offsetof(struct net_device_stats, m)
/* For stats in the control BAR (other than Q stats) */
#define NN_ET_DEV_STAT(m) NFP_NET_DEV_ET_STATS, \
sizeof(u64), \
(m)
static const struct _nfp_net_et_stats nfp_net_et_stats[] = {
/* netdev stats */
{"rx_packets", NN_ET_NETDEV_STAT(rx_packets)},
{"tx_packets", NN_ET_NETDEV_STAT(tx_packets)},
{"rx_bytes", NN_ET_NETDEV_STAT(rx_bytes)},
{"tx_bytes", NN_ET_NETDEV_STAT(tx_bytes)},
{"rx_errors", NN_ET_NETDEV_STAT(rx_errors)},
{"tx_errors", NN_ET_NETDEV_STAT(tx_errors)},
{"rx_dropped", NN_ET_NETDEV_STAT(rx_dropped)},
{"tx_dropped", NN_ET_NETDEV_STAT(tx_dropped)},
{"multicast", NN_ET_NETDEV_STAT(multicast)},
{"collisions", NN_ET_NETDEV_STAT(collisions)},
{"rx_over_errors", NN_ET_NETDEV_STAT(rx_over_errors)},
{"rx_crc_errors", NN_ET_NETDEV_STAT(rx_crc_errors)},
{"rx_frame_errors", NN_ET_NETDEV_STAT(rx_frame_errors)},
{"rx_fifo_errors", NN_ET_NETDEV_STAT(rx_fifo_errors)},
{"rx_missed_errors", NN_ET_NETDEV_STAT(rx_missed_errors)},
{"tx_aborted_errors", NN_ET_NETDEV_STAT(tx_aborted_errors)},
{"tx_carrier_errors", NN_ET_NETDEV_STAT(tx_carrier_errors)},
{"tx_fifo_errors", NN_ET_NETDEV_STAT(tx_fifo_errors)},
/* Stats from the device */
{"dev_rx_discards", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_DISCARDS)},
{"dev_rx_errors", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_ERRORS)},
{"dev_rx_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_OCTETS)},
{"dev_rx_uc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_UC_OCTETS)},
{"dev_rx_mc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_MC_OCTETS)},
{"dev_rx_bc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_BC_OCTETS)},
{"dev_rx_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_FRAMES)},
{"dev_rx_mc_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_MC_FRAMES)},
{"dev_rx_bc_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_BC_FRAMES)},
{"dev_tx_discards", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_DISCARDS)},
{"dev_tx_errors", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_ERRORS)},
{"dev_tx_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_OCTETS)},
{"dev_tx_uc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_UC_OCTETS)},
{"dev_tx_mc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_MC_OCTETS)},
{"dev_tx_bc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_BC_OCTETS)},
{"dev_tx_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_FRAMES)},
{"dev_tx_mc_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_MC_FRAMES)},
{"dev_tx_bc_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_BC_FRAMES)},
{"bpf_pass_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_APP0_FRAMES)},
{"bpf_pass_bytes", NN_ET_DEV_STAT(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", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_APP1_FRAMES)},
{"bpf_app1_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_APP1_BYTES)},
{"bpf_app2_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_APP2_FRAMES)},
{"bpf_app2_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_APP2_BYTES)},
{"bpf_app3_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_APP3_FRAMES)},
{"bpf_app3_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_APP3_BYTES)},
};
#define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats)
#define NN_ET_RVEC_STATS_LEN (nn->dp.num_r_vecs * 3)
#define NN_ET_RVEC_GATHER_STATS 7
#define NN_ET_QUEUE_STATS_LEN ((nn->dp.num_tx_rings + nn->dp.num_rx_rings) * 2)
#define NN_ET_STATS_LEN (NN_ET_GLOBAL_STATS_LEN + NN_ET_RVEC_GATHER_STATS + \
NN_ET_RVEC_STATS_LEN + NN_ET_QUEUE_STATS_LEN)
static void nfp_net_get_nspinfo(struct nfp_net *nn, char *version)
{
struct nfp_nsp *nsp;
if (!nn->cpp)
return;
nsp = nfp_nsp_open(nn->cpp);
if (IS_ERR(nsp))
return;
snprintf(version, ETHTOOL_FWVERS_LEN, "sp:%hu.%hu",
nfp_nsp_get_abi_ver_major(nsp),
nfp_nsp_get_abi_ver_minor(nsp));
nfp_nsp_close(nsp);
}
static void nfp_net_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
char nsp_version[ETHTOOL_FWVERS_LEN] = {};
struct nfp_net *nn = netdev_priv(netdev);
strlcpy(drvinfo->driver, nn->pdev->driver->name,
sizeof(drvinfo->driver));
strlcpy(drvinfo->version, nfp_driver_version, sizeof(drvinfo->version));
nfp_net_get_nspinfo(nn, nsp_version);
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
"%d.%d.%d.%d %s",
nn->fw_ver.resv, nn->fw_ver.class,
nn->fw_ver.major, nn->fw_ver.minor, nsp_version);
strlcpy(drvinfo->bus_info, pci_name(nn->pdev),
sizeof(drvinfo->bus_info));
drvinfo->n_stats = NN_ET_STATS_LEN;
drvinfo->regdump_len = NFP_NET_CFG_BAR_SZ;
}
/**
* 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_net *nn = netdev_priv(netdev);
u32 sts, ls;
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
cmd->base.port = PORT_OTHER;
cmd->base.speed = SPEED_UNKNOWN;
cmd->base.duplex = DUPLEX_UNKNOWN;
if (nn->eth_port)
cmd->base.autoneg = nn->eth_port->aneg != NFP_ANEG_DISABLED ?
AUTONEG_ENABLE : AUTONEG_DISABLE;
if (!netif_carrier_ok(netdev))
return 0;
/* Use link speed from ETH table if available, otherwise try the BAR */
if (nn->eth_port) {
int err;
if (nfp_net_link_changed_read_clear(nn)) {
err = nfp_net_refresh_eth_port(nn);
if (err)
return err;
}
cmd->base.port = nn->eth_port->port_type;
cmd->base.speed = nn->eth_port->speed;
cmd->base.duplex = DUPLEX_FULL;
return 0;
}
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[sts];
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_net *nn = netdev_priv(netdev);
struct nfp_nsp *nsp;
int err;
if (!nn->eth_port)
return -EOPNOTSUPP;
if (netif_running(netdev)) {
nn_warn(nn, "Changing settings not allowed on an active interface. It may cause the port to be disabled until reboot.\n");
return -EBUSY;
}
nsp = nfp_eth_config_start(nn->cpp, nn->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 / nn->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(nn);
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);
}
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);
}
static void nfp_net_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
struct nfp_net *nn = netdev_priv(netdev);
u8 *p = data;
int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) {
memcpy(p, nfp_net_et_stats[i].name, ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
for (i = 0; i < nn->dp.num_r_vecs; i++) {
sprintf(p, "rvec_%u_rx_pkts", i);
p += ETH_GSTRING_LEN;
sprintf(p, "rvec_%u_tx_pkts", i);
p += ETH_GSTRING_LEN;
sprintf(p, "rvec_%u_tx_busy", i);
p += ETH_GSTRING_LEN;
}
strncpy(p, "hw_rx_csum_ok", ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
strncpy(p, "hw_rx_csum_inner_ok", ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
strncpy(p, "hw_rx_csum_err", ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
strncpy(p, "hw_tx_csum", ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
strncpy(p, "hw_tx_inner_csum", ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
strncpy(p, "tx_gather", ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
strncpy(p, "tx_lso", ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
for (i = 0; i < nn->dp.num_tx_rings; i++) {
sprintf(p, "txq_%u_pkts", i);
p += ETH_GSTRING_LEN;
sprintf(p, "txq_%u_bytes", i);
p += ETH_GSTRING_LEN;
}
for (i = 0; i < nn->dp.num_rx_rings; i++) {
sprintf(p, "rxq_%u_pkts", i);
p += ETH_GSTRING_LEN;
sprintf(p, "rxq_%u_bytes", i);
p += ETH_GSTRING_LEN;
}
break;
}
}
static void nfp_net_get_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *data)
{
u64 gathered_stats[NN_ET_RVEC_GATHER_STATS] = {};
struct nfp_net *nn = netdev_priv(netdev);
struct rtnl_link_stats64 *netdev_stats;
struct rtnl_link_stats64 temp = {};
u64 tmp[NN_ET_RVEC_GATHER_STATS];
u8 __iomem *io_p;
int i, j, k;
u8 *p;
netdev_stats = dev_get_stats(netdev, &temp);
for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) {
switch (nfp_net_et_stats[i].type) {
case NETDEV_ET_STATS:
p = (char *)netdev_stats + nfp_net_et_stats[i].off;
data[i] = nfp_net_et_stats[i].sz == sizeof(u64) ?
*(u64 *)p : *(u32 *)p;
break;
case NFP_NET_DEV_ET_STATS:
io_p = nn->dp.ctrl_bar + nfp_net_et_stats[i].off;
data[i] = readq(io_p);
break;
}
}
for (j = 0; j < nn->dp.num_r_vecs; j++) {
unsigned int start;
do {
start = u64_stats_fetch_begin(&nn->r_vecs[j].rx_sync);
data[i++] = nn->r_vecs[j].rx_pkts;
tmp[0] = nn->r_vecs[j].hw_csum_rx_ok;
tmp[1] = nn->r_vecs[j].hw_csum_rx_inner_ok;
tmp[2] = nn->r_vecs[j].hw_csum_rx_error;
} while (u64_stats_fetch_retry(&nn->r_vecs[j].rx_sync, start));
do {
start = u64_stats_fetch_begin(&nn->r_vecs[j].tx_sync);
data[i++] = nn->r_vecs[j].tx_pkts;
data[i++] = nn->r_vecs[j].tx_busy;
tmp[3] = nn->r_vecs[j].hw_csum_tx;
tmp[4] = nn->r_vecs[j].hw_csum_tx_inner;
tmp[5] = nn->r_vecs[j].tx_gather;
tmp[6] = nn->r_vecs[j].tx_lso;
} while (u64_stats_fetch_retry(&nn->r_vecs[j].tx_sync, start));
for (k = 0; k < NN_ET_RVEC_GATHER_STATS; k++)
gathered_stats[k] += tmp[k];
}
for (j = 0; j < NN_ET_RVEC_GATHER_STATS; j++)
data[i++] = gathered_stats[j];
for (j = 0; j < nn->dp.num_tx_rings; j++) {
io_p = nn->dp.ctrl_bar + NFP_NET_CFG_TXR_STATS(j);
data[i++] = readq(io_p);
io_p = nn->dp.ctrl_bar + NFP_NET_CFG_TXR_STATS(j) + 8;
data[i++] = readq(io_p);
}
for (j = 0; j < nn->dp.num_rx_rings; j++) {
io_p = nn->dp.ctrl_bar + NFP_NET_CFG_RXR_STATS(j);
data[i++] = readq(io_p);
io_p = nn->dp.ctrl_bar + NFP_NET_CFG_RXR_STATS(j) + 8;
data[i++] = readq(io_p);
}
}
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 NN_ET_STATS_LEN;
default:
return -EOPNOTSUPP;
}
}
/* 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))
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))
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))
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))
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))
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) ||
!(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_net *nn, struct ethtool_dump *dump, void *buffer)
{
struct nfp_resource *res;
int ret;
if (!nn->cpp)
return -EOPNOTSUPP;
dump->version = 1;
dump->flag = NFP_DUMP_NSP_DIAG;
res = nfp_resource_acquire(nn->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(nn->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;
}
static int nfp_net_set_dump(struct net_device *netdev, struct ethtool_dump *val)
{
struct nfp_net *nn = netdev_priv(netdev);
if (!nn->cpp)
return -EOPNOTSUPP;
if (val->flag != NFP_DUMP_NSP_DIAG)
return -EINVAL;
nn->ethtool_dump_flag = val->flag;
return 0;
}
static int
nfp_net_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump)
{
return nfp_dump_nsp_diag(netdev_priv(netdev), dump, NULL);
}
static int
nfp_net_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump,
void *buffer)
{
return nfp_dump_nsp_diag(netdev_priv(netdev), dump, buffer);
}
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 -ENOTSUPP;
/* 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);
}
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_net_set_dump,
.get_dump_flag = nfp_net_get_dump_flag,
.get_dump_data = nfp_net_get_dump_data,
.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,
};
void nfp_net_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &nfp_net_ethtool_ops;
}
