236 строки
7.5 KiB
C
236 строки
7.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
#include "netlink.h"
|
|
#include "common.h"
|
|
|
|
struct rings_req_info {
|
|
struct ethnl_req_info base;
|
|
};
|
|
|
|
struct rings_reply_data {
|
|
struct ethnl_reply_data base;
|
|
struct ethtool_ringparam ringparam;
|
|
struct kernel_ethtool_ringparam kernel_ringparam;
|
|
};
|
|
|
|
#define RINGS_REPDATA(__reply_base) \
|
|
container_of(__reply_base, struct rings_reply_data, base)
|
|
|
|
const struct nla_policy ethnl_rings_get_policy[] = {
|
|
[ETHTOOL_A_RINGS_HEADER] =
|
|
NLA_POLICY_NESTED(ethnl_header_policy),
|
|
};
|
|
|
|
static int rings_prepare_data(const struct ethnl_req_info *req_base,
|
|
struct ethnl_reply_data *reply_base,
|
|
struct genl_info *info)
|
|
{
|
|
struct rings_reply_data *data = RINGS_REPDATA(reply_base);
|
|
struct netlink_ext_ack *extack = info ? info->extack : NULL;
|
|
struct net_device *dev = reply_base->dev;
|
|
int ret;
|
|
|
|
if (!dev->ethtool_ops->get_ringparam)
|
|
return -EOPNOTSUPP;
|
|
ret = ethnl_ops_begin(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
dev->ethtool_ops->get_ringparam(dev, &data->ringparam,
|
|
&data->kernel_ringparam, extack);
|
|
ethnl_ops_complete(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rings_reply_size(const struct ethnl_req_info *req_base,
|
|
const struct ethnl_reply_data *reply_base)
|
|
{
|
|
return nla_total_size(sizeof(u32)) + /* _RINGS_RX_MAX */
|
|
nla_total_size(sizeof(u32)) + /* _RINGS_RX_MINI_MAX */
|
|
nla_total_size(sizeof(u32)) + /* _RINGS_RX_JUMBO_MAX */
|
|
nla_total_size(sizeof(u32)) + /* _RINGS_TX_MAX */
|
|
nla_total_size(sizeof(u32)) + /* _RINGS_RX */
|
|
nla_total_size(sizeof(u32)) + /* _RINGS_RX_MINI */
|
|
nla_total_size(sizeof(u32)) + /* _RINGS_RX_JUMBO */
|
|
nla_total_size(sizeof(u32)) + /* _RINGS_TX */
|
|
nla_total_size(sizeof(u32)) + /* _RINGS_RX_BUF_LEN */
|
|
nla_total_size(sizeof(u8)) + /* _RINGS_TCP_DATA_SPLIT */
|
|
nla_total_size(sizeof(u32) + /* _RINGS_CQE_SIZE */
|
|
nla_total_size(sizeof(u8))); /* _RINGS_TX_PUSH */
|
|
}
|
|
|
|
static int rings_fill_reply(struct sk_buff *skb,
|
|
const struct ethnl_req_info *req_base,
|
|
const struct ethnl_reply_data *reply_base)
|
|
{
|
|
const struct rings_reply_data *data = RINGS_REPDATA(reply_base);
|
|
const struct kernel_ethtool_ringparam *kr = &data->kernel_ringparam;
|
|
const struct ethtool_ringparam *ringparam = &data->ringparam;
|
|
|
|
WARN_ON(kr->tcp_data_split > ETHTOOL_TCP_DATA_SPLIT_ENABLED);
|
|
|
|
if ((ringparam->rx_max_pending &&
|
|
(nla_put_u32(skb, ETHTOOL_A_RINGS_RX_MAX,
|
|
ringparam->rx_max_pending) ||
|
|
nla_put_u32(skb, ETHTOOL_A_RINGS_RX,
|
|
ringparam->rx_pending))) ||
|
|
(ringparam->rx_mini_max_pending &&
|
|
(nla_put_u32(skb, ETHTOOL_A_RINGS_RX_MINI_MAX,
|
|
ringparam->rx_mini_max_pending) ||
|
|
nla_put_u32(skb, ETHTOOL_A_RINGS_RX_MINI,
|
|
ringparam->rx_mini_pending))) ||
|
|
(ringparam->rx_jumbo_max_pending &&
|
|
(nla_put_u32(skb, ETHTOOL_A_RINGS_RX_JUMBO_MAX,
|
|
ringparam->rx_jumbo_max_pending) ||
|
|
nla_put_u32(skb, ETHTOOL_A_RINGS_RX_JUMBO,
|
|
ringparam->rx_jumbo_pending))) ||
|
|
(ringparam->tx_max_pending &&
|
|
(nla_put_u32(skb, ETHTOOL_A_RINGS_TX_MAX,
|
|
ringparam->tx_max_pending) ||
|
|
nla_put_u32(skb, ETHTOOL_A_RINGS_TX,
|
|
ringparam->tx_pending))) ||
|
|
(kr->rx_buf_len &&
|
|
(nla_put_u32(skb, ETHTOOL_A_RINGS_RX_BUF_LEN, kr->rx_buf_len))) ||
|
|
(kr->tcp_data_split &&
|
|
(nla_put_u8(skb, ETHTOOL_A_RINGS_TCP_DATA_SPLIT,
|
|
kr->tcp_data_split))) ||
|
|
(kr->cqe_size &&
|
|
(nla_put_u32(skb, ETHTOOL_A_RINGS_CQE_SIZE, kr->cqe_size))) ||
|
|
nla_put_u8(skb, ETHTOOL_A_RINGS_TX_PUSH, !!kr->tx_push))
|
|
return -EMSGSIZE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
const struct ethnl_request_ops ethnl_rings_request_ops = {
|
|
.request_cmd = ETHTOOL_MSG_RINGS_GET,
|
|
.reply_cmd = ETHTOOL_MSG_RINGS_GET_REPLY,
|
|
.hdr_attr = ETHTOOL_A_RINGS_HEADER,
|
|
.req_info_size = sizeof(struct rings_req_info),
|
|
.reply_data_size = sizeof(struct rings_reply_data),
|
|
|
|
.prepare_data = rings_prepare_data,
|
|
.reply_size = rings_reply_size,
|
|
.fill_reply = rings_fill_reply,
|
|
};
|
|
|
|
/* RINGS_SET */
|
|
|
|
const struct nla_policy ethnl_rings_set_policy[] = {
|
|
[ETHTOOL_A_RINGS_HEADER] =
|
|
NLA_POLICY_NESTED(ethnl_header_policy),
|
|
[ETHTOOL_A_RINGS_RX] = { .type = NLA_U32 },
|
|
[ETHTOOL_A_RINGS_RX_MINI] = { .type = NLA_U32 },
|
|
[ETHTOOL_A_RINGS_RX_JUMBO] = { .type = NLA_U32 },
|
|
[ETHTOOL_A_RINGS_TX] = { .type = NLA_U32 },
|
|
[ETHTOOL_A_RINGS_RX_BUF_LEN] = NLA_POLICY_MIN(NLA_U32, 1),
|
|
[ETHTOOL_A_RINGS_CQE_SIZE] = NLA_POLICY_MIN(NLA_U32, 1),
|
|
[ETHTOOL_A_RINGS_TX_PUSH] = NLA_POLICY_MAX(NLA_U8, 1),
|
|
};
|
|
|
|
int ethnl_set_rings(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct kernel_ethtool_ringparam kernel_ringparam = {};
|
|
struct ethtool_ringparam ringparam = {};
|
|
struct ethnl_req_info req_info = {};
|
|
struct nlattr **tb = info->attrs;
|
|
const struct nlattr *err_attr;
|
|
const struct ethtool_ops *ops;
|
|
struct net_device *dev;
|
|
bool mod = false;
|
|
int ret;
|
|
|
|
ret = ethnl_parse_header_dev_get(&req_info,
|
|
tb[ETHTOOL_A_RINGS_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_ringparam || !ops->set_ringparam)
|
|
goto out_dev;
|
|
|
|
if (tb[ETHTOOL_A_RINGS_RX_BUF_LEN] &&
|
|
!(ops->supported_ring_params & ETHTOOL_RING_USE_RX_BUF_LEN)) {
|
|
ret = -EOPNOTSUPP;
|
|
NL_SET_ERR_MSG_ATTR(info->extack,
|
|
tb[ETHTOOL_A_RINGS_RX_BUF_LEN],
|
|
"setting rx buf len not supported");
|
|
goto out_dev;
|
|
}
|
|
|
|
if (tb[ETHTOOL_A_RINGS_CQE_SIZE] &&
|
|
!(ops->supported_ring_params & ETHTOOL_RING_USE_CQE_SIZE)) {
|
|
ret = -EOPNOTSUPP;
|
|
NL_SET_ERR_MSG_ATTR(info->extack,
|
|
tb[ETHTOOL_A_RINGS_CQE_SIZE],
|
|
"setting cqe size not supported");
|
|
goto out_dev;
|
|
}
|
|
|
|
if (tb[ETHTOOL_A_RINGS_TX_PUSH] &&
|
|
!(ops->supported_ring_params & ETHTOOL_RING_USE_TX_PUSH)) {
|
|
ret = -EOPNOTSUPP;
|
|
NL_SET_ERR_MSG_ATTR(info->extack,
|
|
tb[ETHTOOL_A_RINGS_TX_PUSH],
|
|
"setting tx push not supported");
|
|
goto out_dev;
|
|
}
|
|
|
|
rtnl_lock();
|
|
ret = ethnl_ops_begin(dev);
|
|
if (ret < 0)
|
|
goto out_rtnl;
|
|
ops->get_ringparam(dev, &ringparam, &kernel_ringparam, info->extack);
|
|
|
|
ethnl_update_u32(&ringparam.rx_pending, tb[ETHTOOL_A_RINGS_RX], &mod);
|
|
ethnl_update_u32(&ringparam.rx_mini_pending,
|
|
tb[ETHTOOL_A_RINGS_RX_MINI], &mod);
|
|
ethnl_update_u32(&ringparam.rx_jumbo_pending,
|
|
tb[ETHTOOL_A_RINGS_RX_JUMBO], &mod);
|
|
ethnl_update_u32(&ringparam.tx_pending, tb[ETHTOOL_A_RINGS_TX], &mod);
|
|
ethnl_update_u32(&kernel_ringparam.rx_buf_len,
|
|
tb[ETHTOOL_A_RINGS_RX_BUF_LEN], &mod);
|
|
ethnl_update_u32(&kernel_ringparam.cqe_size,
|
|
tb[ETHTOOL_A_RINGS_CQE_SIZE], &mod);
|
|
ethnl_update_u8(&kernel_ringparam.tx_push,
|
|
tb[ETHTOOL_A_RINGS_TX_PUSH], &mod);
|
|
ret = 0;
|
|
if (!mod)
|
|
goto out_ops;
|
|
|
|
/* ensure new ring parameters are within limits */
|
|
if (ringparam.rx_pending > ringparam.rx_max_pending)
|
|
err_attr = tb[ETHTOOL_A_RINGS_RX];
|
|
else if (ringparam.rx_mini_pending > ringparam.rx_mini_max_pending)
|
|
err_attr = tb[ETHTOOL_A_RINGS_RX_MINI];
|
|
else if (ringparam.rx_jumbo_pending > ringparam.rx_jumbo_max_pending)
|
|
err_attr = tb[ETHTOOL_A_RINGS_RX_JUMBO];
|
|
else if (ringparam.tx_pending > ringparam.tx_max_pending)
|
|
err_attr = tb[ETHTOOL_A_RINGS_TX];
|
|
else
|
|
err_attr = NULL;
|
|
if (err_attr) {
|
|
ret = -EINVAL;
|
|
NL_SET_ERR_MSG_ATTR(info->extack, err_attr,
|
|
"requested ring size exceeds maximum");
|
|
goto out_ops;
|
|
}
|
|
|
|
ret = dev->ethtool_ops->set_ringparam(dev, &ringparam,
|
|
&kernel_ringparam, info->extack);
|
|
if (ret < 0)
|
|
goto out_ops;
|
|
ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL);
|
|
|
|
out_ops:
|
|
ethnl_ops_complete(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
out_dev:
|
|
ethnl_parse_header_dev_put(&req_info);
|
|
return ret;
|
|
}
|