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linux_dsm_epyc7002/net/ethtool/coalesce.c

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ethtool: provide coalescing parameters with COALESCE_GET request Implement COALESCE_GET request to get coalescing parameters of a network device. These are traditionally available via ETHTOOL_GCOALESCE ioctl request. This commit adds only support for device coalescing parameters, not per queue coalescing parameters. Omit attributes with zero values unless they are declared as supported (i.e. the corresponding bit in ethtool_ops::supported_coalesce_params is set). Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-28 06:01:08 +07:00
// SPDX-License-Identifier: GPL-2.0-only
#include "netlink.h"
#include "common.h"
struct coalesce_req_info {
struct ethnl_req_info base;
};
struct coalesce_reply_data {
struct ethnl_reply_data base;
struct ethtool_coalesce coalesce;
u32 supported_params;
};
#define COALESCE_REPDATA(__reply_base) \
container_of(__reply_base, struct coalesce_reply_data, base)
#define __SUPPORTED_OFFSET ETHTOOL_A_COALESCE_RX_USECS
static u32 attr_to_mask(unsigned int attr_type)
{
return BIT(attr_type - __SUPPORTED_OFFSET);
}
/* build time check that indices in ethtool_ops::supported_coalesce_params
* match corresponding attribute types with an offset
*/
#define __CHECK_SUPPORTED_OFFSET(x) \
static_assert((ETHTOOL_ ## x) == \
BIT((ETHTOOL_A_ ## x) - __SUPPORTED_OFFSET))
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_IRQ);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_IRQ);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_IRQ);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_IRQ);
__CHECK_SUPPORTED_OFFSET(COALESCE_STATS_BLOCK_USECS);
__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_RX);
__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_TX);
__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_RATE_SAMPLE_INTERVAL);
static const struct nla_policy
coalesce_get_policy[ETHTOOL_A_COALESCE_MAX + 1] = {
[ETHTOOL_A_COALESCE_UNSPEC] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_HEADER] = { .type = NLA_NESTED },
[ETHTOOL_A_COALESCE_RX_USECS] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_RX_MAX_FRAMES] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_RX_USECS_IRQ] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_TX_USECS] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_TX_MAX_FRAMES] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_TX_USECS_IRQ] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_PKT_RATE_LOW] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_RX_USECS_LOW] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_TX_USECS_LOW] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_PKT_RATE_HIGH] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_RX_USECS_HIGH] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_TX_USECS_HIGH] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL] = { .type = NLA_REJECT },
};
static int coalesce_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
struct genl_info *info)
{
struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
int ret;
if (!dev->ethtool_ops->get_coalesce)
return -EOPNOTSUPP;
data->supported_params = dev->ethtool_ops->supported_coalesce_params;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
ret = dev->ethtool_ops->get_coalesce(dev, &data->coalesce);
ethnl_ops_complete(dev);
return ret;
}
static int coalesce_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
return nla_total_size(sizeof(u32)) + /* _RX_USECS */
nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES */
nla_total_size(sizeof(u32)) + /* _RX_USECS_IRQ */
nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_IRQ */
nla_total_size(sizeof(u32)) + /* _TX_USECS */
nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES */
nla_total_size(sizeof(u32)) + /* _TX_USECS_IRQ */
nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_IRQ */
nla_total_size(sizeof(u32)) + /* _STATS_BLOCK_USECS */
nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_RX */
nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_TX */
nla_total_size(sizeof(u32)) + /* _PKT_RATE_LOW */
nla_total_size(sizeof(u32)) + /* _RX_USECS_LOW */
nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_LOW */
nla_total_size(sizeof(u32)) + /* _TX_USECS_LOW */
nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_LOW */
nla_total_size(sizeof(u32)) + /* _PKT_RATE_HIGH */
nla_total_size(sizeof(u32)) + /* _RX_USECS_HIGH */
nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_HIGH */
nla_total_size(sizeof(u32)) + /* _TX_USECS_HIGH */
nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_HIGH */
nla_total_size(sizeof(u32)); /* _RATE_SAMPLE_INTERVAL */
}
static bool coalesce_put_u32(struct sk_buff *skb, u16 attr_type, u32 val,
u32 supported_params)
{
if (!val && !(supported_params & attr_to_mask(attr_type)))
return false;
return nla_put_u32(skb, attr_type, val);
}
static bool coalesce_put_bool(struct sk_buff *skb, u16 attr_type, u32 val,
u32 supported_params)
{
if (!val && !(supported_params & attr_to_mask(attr_type)))
return false;
return nla_put_u8(skb, attr_type, !!val);
}
static int coalesce_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
const struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base);
const struct ethtool_coalesce *coal = &data->coalesce;
u32 supported = data->supported_params;
if (coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS,
coal->rx_coalesce_usecs, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES,
coal->rx_max_coalesced_frames, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_IRQ,
coal->rx_coalesce_usecs_irq, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ,
coal->rx_max_coalesced_frames_irq, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS,
coal->tx_coalesce_usecs, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES,
coal->tx_max_coalesced_frames, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_IRQ,
coal->tx_coalesce_usecs_irq, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ,
coal->tx_max_coalesced_frames_irq, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_STATS_BLOCK_USECS,
coal->stats_block_coalesce_usecs, supported) ||
coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX,
coal->use_adaptive_rx_coalesce, supported) ||
coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX,
coal->use_adaptive_tx_coalesce, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_LOW,
coal->pkt_rate_low, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_LOW,
coal->rx_coalesce_usecs_low, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW,
coal->rx_max_coalesced_frames_low, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_LOW,
coal->tx_coalesce_usecs_low, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW,
coal->tx_max_coalesced_frames_low, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_HIGH,
coal->pkt_rate_high, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_HIGH,
coal->rx_coalesce_usecs_high, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH,
coal->rx_max_coalesced_frames_high, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_HIGH,
coal->tx_coalesce_usecs_high, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH,
coal->tx_max_coalesced_frames_high, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL,
coal->rate_sample_interval, supported))
return -EMSGSIZE;
return 0;
}
const struct ethnl_request_ops ethnl_coalesce_request_ops = {
.request_cmd = ETHTOOL_MSG_COALESCE_GET,
.reply_cmd = ETHTOOL_MSG_COALESCE_GET_REPLY,
.hdr_attr = ETHTOOL_A_COALESCE_HEADER,
.max_attr = ETHTOOL_A_COALESCE_MAX,
.req_info_size = sizeof(struct coalesce_req_info),
.reply_data_size = sizeof(struct coalesce_reply_data),
.request_policy = coalesce_get_policy,
.prepare_data = coalesce_prepare_data,
.reply_size = coalesce_reply_size,
.fill_reply = coalesce_fill_reply,
};
ethtool: set coalescing parameters with COALESCE_SET request Implement COALESCE_SET netlink request to set coalescing parameters of a network device. These are traditionally set with ETHTOOL_SCOALESCE ioctl request. This commit adds only support for device coalescing parameters, not per queue coalescing parameters. Like the ioctl implementation, the generic ethtool code checks if only supported parameters are modified; if not, first offending attribute is reported using extack. v2: fix alignment (whitespace only) Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-28 06:01:13 +07:00
/* COALESCE_SET */
static const struct nla_policy
coalesce_set_policy[ETHTOOL_A_COALESCE_MAX + 1] = {
[ETHTOOL_A_COALESCE_UNSPEC] = { .type = NLA_REJECT },
[ETHTOOL_A_COALESCE_HEADER] = { .type = NLA_NESTED },
[ETHTOOL_A_COALESCE_RX_USECS] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_RX_MAX_FRAMES] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_RX_USECS_IRQ] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_USECS] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_MAX_FRAMES] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_USECS_IRQ] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX] = { .type = NLA_U8 },
[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX] = { .type = NLA_U8 },
[ETHTOOL_A_COALESCE_PKT_RATE_LOW] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_RX_USECS_LOW] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_USECS_LOW] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_PKT_RATE_HIGH] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_RX_USECS_HIGH] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_USECS_HIGH] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL] = { .type = NLA_U32 },
};
int ethnl_set_coalesce(struct sk_buff *skb, struct genl_info *info)
{
struct nlattr *tb[ETHTOOL_A_COALESCE_MAX + 1];
struct ethtool_coalesce coalesce = {};
struct ethnl_req_info req_info = {};
const struct ethtool_ops *ops;
struct net_device *dev;
u32 supported_params;
bool mod = false;
int ret;
u16 a;
ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
ETHTOOL_A_COALESCE_MAX, coalesce_set_policy,
info->extack);
if (ret < 0)
return ret;
ret = ethnl_parse_header_dev_get(&req_info,
tb[ETHTOOL_A_COALESCE_HEADER],
genl_info_net(info), info->extack,
true);
if (ret < 0)
return ret;
dev = req_info.dev;
ops = dev->ethtool_ops;
ret = -EOPNOTSUPP;
if (!ops->get_coalesce || !ops->set_coalesce)
goto out_dev;
/* make sure that only supported parameters are present */
supported_params = ops->supported_coalesce_params;
for (a = ETHTOOL_A_COALESCE_RX_USECS; a < __ETHTOOL_A_COALESCE_CNT; a++)
if (tb[a] && !(supported_params & attr_to_mask(a))) {
ret = -EINVAL;
NL_SET_ERR_MSG_ATTR(info->extack, tb[a],
"cannot modify an unsupported parameter");
goto out_dev;
}
rtnl_lock();
ret = ethnl_ops_begin(dev);
if (ret < 0)
goto out_rtnl;
ret = ops->get_coalesce(dev, &coalesce);
if (ret < 0)
goto out_ops;
ethnl_update_u32(&coalesce.rx_coalesce_usecs,
tb[ETHTOOL_A_COALESCE_RX_USECS], &mod);
ethnl_update_u32(&coalesce.rx_max_coalesced_frames,
tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES], &mod);
ethnl_update_u32(&coalesce.rx_coalesce_usecs_irq,
tb[ETHTOOL_A_COALESCE_RX_USECS_IRQ], &mod);
ethnl_update_u32(&coalesce.rx_max_coalesced_frames_irq,
tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ], &mod);
ethnl_update_u32(&coalesce.tx_coalesce_usecs,
tb[ETHTOOL_A_COALESCE_TX_USECS], &mod);
ethnl_update_u32(&coalesce.tx_max_coalesced_frames,
tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES], &mod);
ethnl_update_u32(&coalesce.tx_coalesce_usecs_irq,
tb[ETHTOOL_A_COALESCE_TX_USECS_IRQ], &mod);
ethnl_update_u32(&coalesce.tx_max_coalesced_frames_irq,
tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ], &mod);
ethnl_update_u32(&coalesce.stats_block_coalesce_usecs,
tb[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS], &mod);
ethnl_update_bool32(&coalesce.use_adaptive_rx_coalesce,
tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX], &mod);
ethnl_update_bool32(&coalesce.use_adaptive_tx_coalesce,
tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX], &mod);
ethnl_update_u32(&coalesce.pkt_rate_low,
tb[ETHTOOL_A_COALESCE_PKT_RATE_LOW], &mod);
ethnl_update_u32(&coalesce.rx_coalesce_usecs_low,
tb[ETHTOOL_A_COALESCE_RX_USECS_LOW], &mod);
ethnl_update_u32(&coalesce.rx_max_coalesced_frames_low,
tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW], &mod);
ethnl_update_u32(&coalesce.tx_coalesce_usecs_low,
tb[ETHTOOL_A_COALESCE_TX_USECS_LOW], &mod);
ethnl_update_u32(&coalesce.tx_max_coalesced_frames_low,
tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW], &mod);
ethnl_update_u32(&coalesce.pkt_rate_high,
tb[ETHTOOL_A_COALESCE_PKT_RATE_HIGH], &mod);
ethnl_update_u32(&coalesce.rx_coalesce_usecs_high,
tb[ETHTOOL_A_COALESCE_RX_USECS_HIGH], &mod);
ethnl_update_u32(&coalesce.rx_max_coalesced_frames_high,
tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH], &mod);
ethnl_update_u32(&coalesce.tx_coalesce_usecs_high,
tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], &mod);
ethnl_update_u32(&coalesce.tx_max_coalesced_frames_high,
tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], &mod);
ethnl_update_u32(&coalesce.rate_sample_interval,
tb[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL], &mod);
ret = 0;
if (!mod)
goto out_ops;
ret = dev->ethtool_ops->set_coalesce(dev, &coalesce);
out_ops:
ethnl_ops_complete(dev);
out_rtnl:
rtnl_unlock();
out_dev:
dev_put(dev);
return ret;
}
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