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