![Michal Kubecek](/assets/img/avatar_default.png)
Send ETHTOOL_MSG_EEE_NTF notification whenever EEE settings of a network device are modified using ETHTOOL_MSG_EEE_SET netlink message or ETHTOOL_SEEE ioctl request. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
207 lines
5.8 KiB
C
207 lines
5.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include "netlink.h"
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#include "common.h"
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#include "bitset.h"
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#define EEE_MODES_COUNT \
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(sizeof_field(struct ethtool_eee, supported) * BITS_PER_BYTE)
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struct eee_req_info {
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struct ethnl_req_info base;
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};
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struct eee_reply_data {
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struct ethnl_reply_data base;
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struct ethtool_eee eee;
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};
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#define EEE_REPDATA(__reply_base) \
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container_of(__reply_base, struct eee_reply_data, base)
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static const struct nla_policy
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eee_get_policy[ETHTOOL_A_EEE_MAX + 1] = {
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[ETHTOOL_A_EEE_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_HEADER] = { .type = NLA_NESTED },
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[ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_MODES_PEER] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_ACTIVE] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_ENABLED] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_REJECT },
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};
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static int eee_prepare_data(const struct ethnl_req_info *req_base,
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struct ethnl_reply_data *reply_base,
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struct genl_info *info)
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{
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struct eee_reply_data *data = EEE_REPDATA(reply_base);
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struct net_device *dev = reply_base->dev;
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int ret;
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if (!dev->ethtool_ops->get_eee)
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return -EOPNOTSUPP;
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ret = ethnl_ops_begin(dev);
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if (ret < 0)
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return ret;
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ret = dev->ethtool_ops->get_eee(dev, &data->eee);
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ethnl_ops_complete(dev);
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return ret;
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}
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static int eee_reply_size(const struct ethnl_req_info *req_base,
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const struct ethnl_reply_data *reply_base)
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{
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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
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const struct eee_reply_data *data = EEE_REPDATA(reply_base);
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const struct ethtool_eee *eee = &data->eee;
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int len = 0;
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int ret;
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BUILD_BUG_ON(sizeof(eee->advertised) * BITS_PER_BYTE !=
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EEE_MODES_COUNT);
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BUILD_BUG_ON(sizeof(eee->lp_advertised) * BITS_PER_BYTE !=
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EEE_MODES_COUNT);
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/* MODES_OURS */
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ret = ethnl_bitset32_size(&eee->advertised, &eee->supported,
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EEE_MODES_COUNT, link_mode_names, compact);
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if (ret < 0)
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return ret;
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len += ret;
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/* MODES_PEERS */
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ret = ethnl_bitset32_size(&eee->lp_advertised, NULL,
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EEE_MODES_COUNT, link_mode_names, compact);
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if (ret < 0)
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return ret;
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len += ret;
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len += nla_total_size(sizeof(u8)) + /* _EEE_ACTIVE */
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nla_total_size(sizeof(u8)) + /* _EEE_ENABLED */
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nla_total_size(sizeof(u8)) + /* _EEE_TX_LPI_ENABLED */
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nla_total_size(sizeof(u32)); /* _EEE_TX_LPI_TIMER */
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return len;
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}
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static int eee_fill_reply(struct sk_buff *skb,
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const struct ethnl_req_info *req_base,
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const struct ethnl_reply_data *reply_base)
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{
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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
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const struct eee_reply_data *data = EEE_REPDATA(reply_base);
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const struct ethtool_eee *eee = &data->eee;
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int ret;
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ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_OURS,
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&eee->advertised, &eee->supported,
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EEE_MODES_COUNT, link_mode_names, compact);
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if (ret < 0)
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return ret;
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ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_PEER,
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&eee->lp_advertised, NULL, EEE_MODES_COUNT,
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link_mode_names, compact);
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if (ret < 0)
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return ret;
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if (nla_put_u8(skb, ETHTOOL_A_EEE_ACTIVE, !!eee->eee_active) ||
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nla_put_u8(skb, ETHTOOL_A_EEE_ENABLED, !!eee->eee_enabled) ||
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nla_put_u8(skb, ETHTOOL_A_EEE_TX_LPI_ENABLED,
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!!eee->tx_lpi_enabled) ||
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nla_put_u32(skb, ETHTOOL_A_EEE_TX_LPI_TIMER, eee->tx_lpi_timer))
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return -EMSGSIZE;
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return 0;
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}
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const struct ethnl_request_ops ethnl_eee_request_ops = {
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.request_cmd = ETHTOOL_MSG_EEE_GET,
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.reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY,
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.hdr_attr = ETHTOOL_A_EEE_HEADER,
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.max_attr = ETHTOOL_A_EEE_MAX,
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.req_info_size = sizeof(struct eee_req_info),
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.reply_data_size = sizeof(struct eee_reply_data),
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.request_policy = eee_get_policy,
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.prepare_data = eee_prepare_data,
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.reply_size = eee_reply_size,
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.fill_reply = eee_fill_reply,
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};
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/* EEE_SET */
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static const struct nla_policy
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eee_set_policy[ETHTOOL_A_EEE_MAX + 1] = {
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[ETHTOOL_A_EEE_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_HEADER] = { .type = NLA_NESTED },
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[ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_NESTED },
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[ETHTOOL_A_EEE_MODES_PEER] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_ACTIVE] = { .type = NLA_REJECT },
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[ETHTOOL_A_EEE_ENABLED] = { .type = NLA_U8 },
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[ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_U8 },
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[ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_U32 },
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};
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int ethnl_set_eee(struct sk_buff *skb, struct genl_info *info)
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{
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struct nlattr *tb[ETHTOOL_A_EEE_MAX + 1];
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struct ethtool_eee eee = {};
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struct ethnl_req_info req_info = {};
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const struct ethtool_ops *ops;
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struct net_device *dev;
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bool mod = false;
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int ret;
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ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb, ETHTOOL_A_EEE_MAX,
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eee_set_policy, info->extack);
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if (ret < 0)
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return ret;
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ret = ethnl_parse_header_dev_get(&req_info,
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tb[ETHTOOL_A_EEE_HEADER],
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genl_info_net(info), info->extack,
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true);
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if (ret < 0)
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return ret;
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dev = req_info.dev;
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ops = dev->ethtool_ops;
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ret = -EOPNOTSUPP;
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if (!ops->get_eee || !ops->set_eee)
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goto out_dev;
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rtnl_lock();
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ret = ethnl_ops_begin(dev);
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if (ret < 0)
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goto out_rtnl;
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ret = ops->get_eee(dev, &eee);
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if (ret < 0)
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goto out_ops;
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ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT,
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tb[ETHTOOL_A_EEE_MODES_OURS],
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link_mode_names, info->extack, &mod);
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if (ret < 0)
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goto out_ops;
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ethnl_update_bool32(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod);
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ethnl_update_bool32(&eee.tx_lpi_enabled,
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tb[ETHTOOL_A_EEE_TX_LPI_ENABLED], &mod);
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ethnl_update_bool32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER],
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&mod);
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ret = 0;
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if (!mod)
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goto out_ops;
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ret = dev->ethtool_ops->set_eee(dev, &eee);
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if (ret < 0)
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goto out_ops;
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ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
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out_ops:
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ethnl_ops_complete(dev);
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out_rtnl:
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rtnl_unlock();
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out_dev:
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dev_put(dev);
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return ret;
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}
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