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 10 struct eee_req_info { 11 struct ethnl_req_info base; 12 }; 13 14 struct 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 22 const struct nla_policy ethnl_eee_get_policy[] = { 23 [ETHTOOL_A_EEE_HEADER] = 24 NLA_POLICY_NESTED(ethnl_header_policy), 25 }; 26 27 static int eee_prepare_data(const struct ethnl_req_info *req_base, 28 struct ethnl_reply_data *reply_base, 29 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 46 static 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 81 static 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 const struct ethnl_request_ops ethnl_eee_request_ops = { 112 .request_cmd = ETHTOOL_MSG_EEE_GET, 113 .reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY, 114 .hdr_attr = ETHTOOL_A_EEE_HEADER, 115 .req_info_size = sizeof(struct eee_req_info), 116 .reply_data_size = sizeof(struct eee_reply_data), 117 118 .prepare_data = eee_prepare_data, 119 .reply_size = eee_reply_size, 120 .fill_reply = eee_fill_reply, 121 }; 122 123 /* EEE_SET */ 124 125 const struct nla_policy ethnl_eee_set_policy[] = { 126 [ETHTOOL_A_EEE_HEADER] = 127 NLA_POLICY_NESTED(ethnl_header_policy), 128 [ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_NESTED }, 129 [ETHTOOL_A_EEE_ENABLED] = { .type = NLA_U8 }, 130 [ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_U8 }, 131 [ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_U32 }, 132 }; 133 134 int ethnl_set_eee(struct sk_buff *skb, struct genl_info *info) 135 { 136 struct ethnl_req_info req_info = {}; 137 struct nlattr **tb = info->attrs; 138 const struct ethtool_ops *ops; 139 struct ethtool_eee eee = {}; 140 struct net_device *dev; 141 bool mod = false; 142 int ret; 143 144 ret = ethnl_parse_header_dev_get(&req_info, 145 tb[ETHTOOL_A_EEE_HEADER], 146 genl_info_net(info), info->extack, 147 true); 148 if (ret < 0) 149 return ret; 150 dev = req_info.dev; 151 ops = dev->ethtool_ops; 152 ret = -EOPNOTSUPP; 153 if (!ops->get_eee || !ops->set_eee) 154 goto out_dev; 155 156 rtnl_lock(); 157 ret = ethnl_ops_begin(dev); 158 if (ret < 0) 159 goto out_rtnl; 160 ret = ops->get_eee(dev, &eee); 161 if (ret < 0) 162 goto out_ops; 163 164 ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT, 165 tb[ETHTOOL_A_EEE_MODES_OURS], 166 link_mode_names, info->extack, &mod); 167 if (ret < 0) 168 goto out_ops; 169 ethnl_update_bool32(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod); 170 ethnl_update_bool32(&eee.tx_lpi_enabled, 171 tb[ETHTOOL_A_EEE_TX_LPI_ENABLED], &mod); 172 ethnl_update_u32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER], 173 &mod); 174 ret = 0; 175 if (!mod) 176 goto out_ops; 177 178 ret = dev->ethtool_ops->set_eee(dev, &eee); 179 if (ret < 0) 180 goto out_ops; 181 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 182 183 out_ops: 184 ethnl_ops_complete(dev); 185 out_rtnl: 186 rtnl_unlock(); 187 out_dev: 188 dev_put(dev); 189 return ret; 190 } 191