1// SPDX-License-Identifier: GPL-2.0-only 2 3#include "netlink.h" 4#include "common.h" 5#include "bitset.h" 6 7#define EEE_MODES_COUNT \ 8 (sizeof_field(struct ethtool_eee, supported) * BITS_PER_BYTE) 9 10struct eee_req_info { 11 struct ethnl_req_info base; 12}; 13 14struct eee_reply_data { 15 struct ethnl_reply_data base; 16 struct ethtool_eee eee; 17}; 18 19#define EEE_REPDATA(__reply_base) \ 20 container_of(__reply_base, struct eee_reply_data, base) 21 22const struct nla_policy ethnl_eee_get_policy[] = { 23 [ETHTOOL_A_EEE_HEADER] = 24 NLA_POLICY_NESTED(ethnl_header_policy), 25}; 26 27static int eee_prepare_data(const struct ethnl_req_info *req_base, 28 struct ethnl_reply_data *reply_base, 29 const struct genl_info *info) 30{ 31 struct eee_reply_data *data = EEE_REPDATA(reply_base); 32 struct net_device *dev = reply_base->dev; 33 int ret; 34 35 if (!dev->ethtool_ops->get_eee) 36 return -EOPNOTSUPP; 37 ret = ethnl_ops_begin(dev); 38 if (ret < 0) 39 return ret; 40 ret = dev->ethtool_ops->get_eee(dev, &data->eee); 41 ethnl_ops_complete(dev); 42 43 return ret; 44} 45 46static int eee_reply_size(const struct ethnl_req_info *req_base, 47 const struct ethnl_reply_data *reply_base) 48{ 49 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; 50 const struct eee_reply_data *data = EEE_REPDATA(reply_base); 51 const struct ethtool_eee *eee = &data->eee; 52 int len = 0; 53 int ret; 54 55 BUILD_BUG_ON(sizeof(eee->advertised) * BITS_PER_BYTE != 56 EEE_MODES_COUNT); 57 BUILD_BUG_ON(sizeof(eee->lp_advertised) * BITS_PER_BYTE != 58 EEE_MODES_COUNT); 59 60 /* MODES_OURS */ 61 ret = ethnl_bitset32_size(&eee->advertised, &eee->supported, 62 EEE_MODES_COUNT, link_mode_names, compact); 63 if (ret < 0) 64 return ret; 65 len += ret; 66 /* MODES_PEERS */ 67 ret = ethnl_bitset32_size(&eee->lp_advertised, NULL, 68 EEE_MODES_COUNT, link_mode_names, compact); 69 if (ret < 0) 70 return ret; 71 len += ret; 72 73 len += nla_total_size(sizeof(u8)) + /* _EEE_ACTIVE */ 74 nla_total_size(sizeof(u8)) + /* _EEE_ENABLED */ 75 nla_total_size(sizeof(u8)) + /* _EEE_TX_LPI_ENABLED */ 76 nla_total_size(sizeof(u32)); /* _EEE_TX_LPI_TIMER */ 77 78 return len; 79} 80 81static int eee_fill_reply(struct sk_buff *skb, 82 const struct ethnl_req_info *req_base, 83 const struct ethnl_reply_data *reply_base) 84{ 85 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; 86 const struct eee_reply_data *data = EEE_REPDATA(reply_base); 87 const struct ethtool_eee *eee = &data->eee; 88 int ret; 89 90 ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_OURS, 91 &eee->advertised, &eee->supported, 92 EEE_MODES_COUNT, link_mode_names, compact); 93 if (ret < 0) 94 return ret; 95 ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_PEER, 96 &eee->lp_advertised, NULL, EEE_MODES_COUNT, 97 link_mode_names, compact); 98 if (ret < 0) 99 return ret; 100 101 if (nla_put_u8(skb, ETHTOOL_A_EEE_ACTIVE, !!eee->eee_active) || 102 nla_put_u8(skb, ETHTOOL_A_EEE_ENABLED, !!eee->eee_enabled) || 103 nla_put_u8(skb, ETHTOOL_A_EEE_TX_LPI_ENABLED, 104 !!eee->tx_lpi_enabled) || 105 nla_put_u32(skb, ETHTOOL_A_EEE_TX_LPI_TIMER, eee->tx_lpi_timer)) 106 return -EMSGSIZE; 107 108 return 0; 109} 110 111/* EEE_SET */ 112 113const struct nla_policy ethnl_eee_set_policy[] = { 114 [ETHTOOL_A_EEE_HEADER] = 115 NLA_POLICY_NESTED(ethnl_header_policy), 116 [ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_NESTED }, 117 [ETHTOOL_A_EEE_ENABLED] = { .type = NLA_U8 }, 118 [ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_U8 }, 119 [ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_U32 }, 120}; 121 122static int 123ethnl_set_eee_validate(struct ethnl_req_info *req_info, struct genl_info *info) 124{ 125 const struct ethtool_ops *ops = req_info->dev->ethtool_ops; 126 127 return ops->get_eee && ops->set_eee ? 1 : -EOPNOTSUPP; 128} 129 130static int 131ethnl_set_eee(struct ethnl_req_info *req_info, struct genl_info *info) 132{ 133 struct net_device *dev = req_info->dev; 134 struct nlattr **tb = info->attrs; 135 struct ethtool_eee eee = {}; 136 bool mod = false; 137 int ret; 138 139 ret = dev->ethtool_ops->get_eee(dev, &eee); 140 if (ret < 0) 141 return ret; 142 143 ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT, 144 tb[ETHTOOL_A_EEE_MODES_OURS], 145 link_mode_names, info->extack, &mod); 146 if (ret < 0) 147 return ret; 148 ethnl_update_bool32(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod); 149 ethnl_update_bool32(&eee.tx_lpi_enabled, 150 tb[ETHTOOL_A_EEE_TX_LPI_ENABLED], &mod); 151 ethnl_update_u32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER], 152 &mod); 153 if (!mod) 154 return 0; 155 156 ret = dev->ethtool_ops->set_eee(dev, &eee); 157 return ret < 0 ? ret : 1; 158} 159 160const struct ethnl_request_ops ethnl_eee_request_ops = { 161 .request_cmd = ETHTOOL_MSG_EEE_GET, 162 .reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY, 163 .hdr_attr = ETHTOOL_A_EEE_HEADER, 164 .req_info_size = sizeof(struct eee_req_info), 165 .reply_data_size = sizeof(struct eee_reply_data), 166 167 .prepare_data = eee_prepare_data, 168 .reply_size = eee_reply_size, 169 .fill_reply = eee_fill_reply, 170 171 .set_validate = ethnl_set_eee_validate, 172 .set = ethnl_set_eee, 173 .set_ntf_cmd = ETHTOOL_MSG_EEE_NTF, 174}; 175