/**
* Copyright 2013 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* 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.
*
*/
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include "enic_res.h"
#include "enic.h"
#include "enic_dev.h"
#include "enic_clsf.h"
#include "vnic_rss.h"
#include "vnic_stats.h"
struct enic_stat {
char name[ETH_GSTRING_LEN];
unsigned int index;
};
#define ENIC_TX_STAT(stat) { \
.name = #stat, \
.index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
}
#define ENIC_RX_STAT(stat) { \
.name = #stat, \
.index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
}
#define ENIC_GEN_STAT(stat) { \
.name = #stat, \
.index = offsetof(struct vnic_gen_stats, stat) / sizeof(u64)\
}
static const struct enic_stat enic_tx_stats[] = {
ENIC_TX_STAT(tx_frames_ok),
ENIC_TX_STAT(tx_unicast_frames_ok),
ENIC_TX_STAT(tx_multicast_frames_ok),
ENIC_TX_STAT(tx_broadcast_frames_ok),
ENIC_TX_STAT(tx_bytes_ok),
ENIC_TX_STAT(tx_unicast_bytes_ok),
ENIC_TX_STAT(tx_multicast_bytes_ok),
ENIC_TX_STAT(tx_broadcast_bytes_ok),
ENIC_TX_STAT(tx_drops),
ENIC_TX_STAT(tx_errors),
ENIC_TX_STAT(tx_tso),
};
static const struct enic_stat enic_rx_stats[] = {
ENIC_RX_STAT(rx_frames_ok),
ENIC_RX_STAT(rx_frames_total),
ENIC_RX_STAT(rx_unicast_frames_ok),
ENIC_RX_STAT(rx_multicast_frames_ok),
ENIC_RX_STAT(rx_broadcast_frames_ok),
ENIC_RX_STAT(rx_bytes_ok),
ENIC_RX_STAT(rx_unicast_bytes_ok),
ENIC_RX_STAT(rx_multicast_bytes_ok),
ENIC_RX_STAT(rx_broadcast_bytes_ok),
ENIC_RX_STAT(rx_drop),
ENIC_RX_STAT(rx_no_bufs),
ENIC_RX_STAT(rx_errors),
ENIC_RX_STAT(rx_rss),
ENIC_RX_STAT(rx_crc_errors),
ENIC_RX_STAT(rx_frames_64),
ENIC_RX_STAT(rx_frames_127),
ENIC_RX_STAT(rx_frames_255),
ENIC_RX_STAT(rx_frames_511),
ENIC_RX_STAT(rx_frames_1023),
ENIC_RX_STAT(rx_frames_1518),
ENIC_RX_STAT(rx_frames_to_max),
};
static const struct enic_stat enic_gen_stats[] = {
ENIC_GEN_STAT(dma_map_error),
};
static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
static const unsigned int enic_n_gen_stats = ARRAY_SIZE(enic_gen_stats);
static void enic_intr_coal_set_rx(struct enic *enic, u32 timer)
{
int i;
int intr;
for (i = 0; i < enic->rq_count; i++) {
intr = enic_msix_rq_intr(enic, i);
vnic_intr_coalescing_timer_set(&enic->intr[intr], timer);
}
}
static int enic_get_settings(struct net_device *netdev,
struct ethtool_cmd *ecmd)
{
struct enic *enic = netdev_priv(netdev);
ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
ecmd->port = PORT_FIBRE;
ecmd->transceiver = XCVR_EXTERNAL;
if (netif_carrier_ok(netdev)) {
ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev));
ecmd->duplex = DUPLEX_FULL;
} else {
ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
ecmd->duplex = DUPLEX_UNKNOWN;
}
ecmd->autoneg = AUTONEG_DISABLE;
return 0;
}
static void enic_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct enic *enic = netdev_priv(netdev);
struct vnic_devcmd_fw_info *fw_info;
enic_dev_fw_info(enic, &fw_info);
strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
strlcpy(drvinfo->fw_version, fw_info->fw_version,
sizeof(drvinfo->fw_version));
strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
sizeof(drvinfo->bus_info));
}
static void enic_get_strings(struct net_device *netdev, u32 stringset,
u8 *data)
{
unsigned int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < enic_n_tx_stats; i++) {
memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
for (i = 0; i < enic_n_rx_stats; i++) {
memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
for (i = 0; i < enic_n_gen_stats; i++) {
memcpy(data, enic_gen_stats[i].name, ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
break;
}
}
static int enic_get_sset_count(struct net_device *netdev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return enic_n_tx_stats + enic_n_rx_stats + enic_n_gen_stats;
default:
return -EOPNOTSUPP;
}
}
static void enic_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *data)
{
struct enic *enic = netdev_priv(netdev);
struct vnic_stats *vstats;
unsigned int i;
enic_dev_stats_dump(enic, &vstats);
for (i = 0; i < enic_n_tx_stats; i++)
*(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].index];
for (i = 0; i < enic_n_rx_stats; i++)
*(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].index];
for (i = 0; i < enic_n_gen_stats; i++)
*(data++) = ((u64 *)&enic->gen_stats)[enic_gen_stats[i].index];
}
static u32 enic_get_msglevel(struct net_device *netdev)
{
struct enic *enic = netdev_priv(netdev);
return enic->msg_enable;
}
static void enic_set_msglevel(struct net_device *netdev, u32 value)
{
struct enic *enic = netdev_priv(netdev);
enic->msg_enable = value;
}
static int enic_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ecmd)
{
struct enic *enic = netdev_priv(netdev);
struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
if (rxcoal->use_adaptive_rx_coalesce)
ecmd->use_adaptive_rx_coalesce = 1;
ecmd->rx_coalesce_usecs_low = rxcoal->small_pkt_range_start;
ecmd->rx_coalesce_usecs_high = rxcoal->range_end;
return 0;
}
static int enic_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ecmd)
{
struct enic *enic = netdev_priv(netdev);
u32 tx_coalesce_usecs;
u32 rx_coalesce_usecs;
u32 rx_coalesce_usecs_low;
u32 rx_coalesce_usecs_high;
u32 coalesce_usecs_max;
unsigned int i, intr;
struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
coalesce_usecs_max);
rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
coalesce_usecs_max);
rx_coalesce_usecs_low = min_t(u32, ecmd->rx_coalesce_usecs_low,
coalesce_usecs_max);
rx_coalesce_usecs_high = min_t(u32, ecmd->rx_coalesce_usecs_high,
coalesce_usecs_max);
switch (vnic_dev_get_intr_mode(enic->vdev)) {
case VNIC_DEV_INTR_MODE_INTX:
if (tx_coalesce_usecs != rx_coalesce_usecs)
return -EINVAL;
if (ecmd->use_adaptive_rx_coalesce ||
ecmd->rx_coalesce_usecs_low ||
ecmd->rx_coalesce_usecs_high)
return -EINVAL;
intr = enic_legacy_io_intr();
vnic_intr_coalescing_timer_set(&enic->intr[intr],
tx_coalesce_usecs);
break;
case VNIC_DEV_INTR_MODE_MSI:
if (tx_coalesce_usecs != rx_coalesce_usecs)
return -EINVAL;
if (ecmd->use_adaptive_rx_coalesce ||
ecmd->rx_coalesce_usecs_low ||
ecmd->rx_coalesce_usecs_high)
return -EINVAL;
vnic_intr_coalescing_timer_set(&enic->intr[0],
tx_coalesce_usecs);
break;
case VNIC_DEV_INTR_MODE_MSIX:
if (ecmd->rx_coalesce_usecs_high &&
(rx_coalesce_usecs_high <
rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF))
return -EINVAL;
for (i = 0; i < enic->wq_count; i++) {
intr = enic_msix_wq_intr(enic, i);
vnic_intr_coalescing_timer_set(&enic->intr[intr],
tx_coalesce_usecs);
}
rxcoal->use_adaptive_rx_coalesce =
!!ecmd->use_adaptive_rx_coalesce;
if (!rxcoal->use_adaptive_rx_coalesce)
enic_intr_coal_set_rx(enic, rx_coalesce_usecs);
if (ecmd->rx_coalesce_usecs_high) {
rxcoal->range_end = rx_coalesce_usecs_high;
rxcoal->small_pkt_range_start = rx_coalesce_usecs_low;
rxcoal->large_pkt_range_start = rx_coalesce_usecs_low +
ENIC_AIC_LARGE_PKT_DIFF;
}
break;
default:
break;
}
enic->tx_coalesce_usecs = tx_coalesce_usecs;
enic->rx_coalesce_usecs = rx_coalesce_usecs;
return 0;
}
static int enic_grxclsrlall(struct enic *enic, struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{
int j, ret = 0, cnt = 0;
cmd->data = enic->rfs_h.max - enic->rfs_h.free;
for (j = 0; j < (1 << ENIC_RFS_FLW_BITSHIFT); j++) {
struct hlist_head *hhead;
struct hlist_node *tmp;
struct enic_rfs_fltr_node *n;
hhead = &enic->rfs_h.ht_head[j];
hlist_for_each_entry_safe(n, tmp, hhead, node) {
if (cnt == cmd->rule_cnt)
return -EMSGSIZE;
rule_locs[cnt] = n->fltr_id;
cnt++;
}
}
cmd->rule_cnt = cnt;
return ret;
}
static int enic_grxclsrule(struct enic *enic, struct ethtool_rxnfc *cmd)
{
struct ethtool_rx_flow_spec *fsp =
(struct ethtool_rx_flow_spec *)&cmd->fs;
struct enic_rfs_fltr_node *n;
n = htbl_fltr_search(enic, (u16)fsp->location);
if (!n)
return -EINVAL;
switch (n->keys.ip_proto) {
case IPPROTO_TCP:
fsp->flow_type = TCP_V4_FLOW;
break;
case IPPROTO_UDP:
fsp->flow_type = UDP_V4_FLOW;
break;
default:
return -EINVAL;
break;
}
fsp->h_u.tcp_ip4_spec.ip4src = n->keys.src;
fsp->m_u.tcp_ip4_spec.ip4src = (__u32)~0;
fsp->h_u.tcp_ip4_spec.ip4dst = n->keys.dst;
fsp->m_u.tcp_ip4_spec.ip4dst = (__u32)~0;
fsp->h_u.tcp_ip4_spec.psrc = n->keys.port16[0];
fsp->m_u.tcp_ip4_spec.psrc = (__u16)~0;
fsp->h_u.tcp_ip4_spec.pdst = n->keys.port16[1];
fsp->m_u.tcp_ip4_spec.pdst = (__u16)~0;
fsp->ring_cookie = n->rq_id;
return 0;
}
static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{
struct enic *enic = netdev_priv(dev);
int ret = 0;
switch (cmd->cmd) {
case ETHTOOL_GRXRINGS:
cmd->data = enic->rq_count;
break;
case ETHTOOL_GRXCLSRLCNT:
spin_lock_bh(&enic->rfs_h.lock);
cmd->rule_cnt = enic->rfs_h.max - enic->rfs_h.free;
cmd->data = enic->rfs_h.max;
spin_unlock_bh(&enic->rfs_h.lock);
break;
case ETHTOOL_GRXCLSRLALL:
spin_lock_bh(&enic->rfs_h.lock);
ret = enic_grxclsrlall(enic, cmd, rule_locs);
spin_unlock_bh(&enic->rfs_h.lock);
break;
case ETHTOOL_GRXCLSRULE:
spin_lock_bh(&enic->rfs_h.lock);
ret = enic_grxclsrule(enic, cmd);
spin_unlock_bh(&enic->rfs_h.lock);
break;
default:
ret = -EOPNOTSUPP;
break;
}
return ret;
}
static int enic_get_tunable(struct net_device *dev,
const struct ethtool_tunable *tuna, void *data)
{
struct enic *enic = netdev_priv(dev);
int ret = 0;
switch (tuna->id) {
case ETHTOOL_RX_COPYBREAK:
*(u32 *)data = enic->rx_copybreak;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int enic_set_tunable(struct net_device *dev,
const struct ethtool_tunable *tuna,
const void *data)
{
struct enic *enic = netdev_priv(dev);
int ret = 0;
switch (tuna->id) {
case ETHTOOL_RX_COPYBREAK:
enic->rx_copybreak = *(u32 *)data;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static u32 enic_get_rxfh_key_size(struct net_device *netdev)
{
return ENIC_RSS_LEN;
}
static int enic_get_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey,
u8 *hfunc)
{
struct enic *enic = netdev_priv(netdev);
if (hkey)
memcpy(hkey, enic->rss_key, ENIC_RSS_LEN);
if (hfunc)
*hfunc = ETH_RSS_HASH_TOP;
return 0;
}
static int enic_set_rxfh(struct net_device *netdev, const u32 *indir,
const u8 *hkey, const u8 hfunc)
{
struct enic *enic = netdev_priv(netdev);
if ((hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) ||
indir)
return -EINVAL;
if (hkey)
memcpy(enic->rss_key, hkey, ENIC_RSS_LEN);
return __enic_set_rsskey(enic);
}
static const struct ethtool_ops enic_ethtool_ops = {
.get_settings = enic_get_settings,
.get_drvinfo = enic_get_drvinfo,
.get_msglevel = enic_get_msglevel,
.set_msglevel = enic_set_msglevel,
.get_link = ethtool_op_get_link,
.get_strings = enic_get_strings,
.get_sset_count = enic_get_sset_count,
.get_ethtool_stats = enic_get_ethtool_stats,
.get_coalesce = enic_get_coalesce,
.set_coalesce = enic_set_coalesce,
.get_rxnfc = enic_get_rxnfc,
.get_tunable = enic_get_tunable,
.set_tunable = enic_set_tunable,
.get_rxfh_key_size = enic_get_rxfh_key_size,
.get_rxfh = enic_get_rxfh,
.set_rxfh = enic_set_rxfh,
};
void enic_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &enic_ethtool_ops;
}