1 // SPDX-License-Identifier: GPL-2.0-only 2 3 #include "netlink.h" 4 #include "common.h" 5 #include "bitset.h" 6 7 struct stats_req_info { 8 struct ethnl_req_info base; 9 DECLARE_BITMAP(stat_mask, __ETHTOOL_STATS_CNT); 10 }; 11 12 #define STATS_REQINFO(__req_base) \ 13 container_of(__req_base, struct stats_req_info, base) 14 15 struct stats_reply_data { 16 struct ethnl_reply_data base; 17 struct ethtool_eth_phy_stats phy_stats; 18 struct ethtool_eth_mac_stats mac_stats; 19 struct ethtool_eth_ctrl_stats ctrl_stats; 20 struct ethtool_rmon_stats rmon_stats; 21 const struct ethtool_rmon_hist_range *rmon_ranges; 22 }; 23 24 #define STATS_REPDATA(__reply_base) \ 25 container_of(__reply_base, struct stats_reply_data, base) 26 27 const char stats_std_names[__ETHTOOL_STATS_CNT][ETH_GSTRING_LEN] = { 28 [ETHTOOL_STATS_ETH_PHY] = "eth-phy", 29 [ETHTOOL_STATS_ETH_MAC] = "eth-mac", 30 [ETHTOOL_STATS_ETH_CTRL] = "eth-ctrl", 31 [ETHTOOL_STATS_RMON] = "rmon", 32 }; 33 34 const char stats_eth_phy_names[__ETHTOOL_A_STATS_ETH_PHY_CNT][ETH_GSTRING_LEN] = { 35 [ETHTOOL_A_STATS_ETH_PHY_5_SYM_ERR] = "SymbolErrorDuringCarrier", 36 }; 37 38 const char stats_eth_mac_names[__ETHTOOL_A_STATS_ETH_MAC_CNT][ETH_GSTRING_LEN] = { 39 [ETHTOOL_A_STATS_ETH_MAC_2_TX_PKT] = "FramesTransmittedOK", 40 [ETHTOOL_A_STATS_ETH_MAC_3_SINGLE_COL] = "SingleCollisionFrames", 41 [ETHTOOL_A_STATS_ETH_MAC_4_MULTI_COL] = "MultipleCollisionFrames", 42 [ETHTOOL_A_STATS_ETH_MAC_5_RX_PKT] = "FramesReceivedOK", 43 [ETHTOOL_A_STATS_ETH_MAC_6_FCS_ERR] = "FrameCheckSequenceErrors", 44 [ETHTOOL_A_STATS_ETH_MAC_7_ALIGN_ERR] = "AlignmentErrors", 45 [ETHTOOL_A_STATS_ETH_MAC_8_TX_BYTES] = "OctetsTransmittedOK", 46 [ETHTOOL_A_STATS_ETH_MAC_9_TX_DEFER] = "FramesWithDeferredXmissions", 47 [ETHTOOL_A_STATS_ETH_MAC_10_LATE_COL] = "LateCollisions", 48 [ETHTOOL_A_STATS_ETH_MAC_11_XS_COL] = "FramesAbortedDueToXSColls", 49 [ETHTOOL_A_STATS_ETH_MAC_12_TX_INT_ERR] = "FramesLostDueToIntMACXmitError", 50 [ETHTOOL_A_STATS_ETH_MAC_13_CS_ERR] = "CarrierSenseErrors", 51 [ETHTOOL_A_STATS_ETH_MAC_14_RX_BYTES] = "OctetsReceivedOK", 52 [ETHTOOL_A_STATS_ETH_MAC_15_RX_INT_ERR] = "FramesLostDueToIntMACRcvError", 53 [ETHTOOL_A_STATS_ETH_MAC_18_TX_MCAST] = "MulticastFramesXmittedOK", 54 [ETHTOOL_A_STATS_ETH_MAC_19_TX_BCAST] = "BroadcastFramesXmittedOK", 55 [ETHTOOL_A_STATS_ETH_MAC_20_XS_DEFER] = "FramesWithExcessiveDeferral", 56 [ETHTOOL_A_STATS_ETH_MAC_21_RX_MCAST] = "MulticastFramesReceivedOK", 57 [ETHTOOL_A_STATS_ETH_MAC_22_RX_BCAST] = "BroadcastFramesReceivedOK", 58 [ETHTOOL_A_STATS_ETH_MAC_23_IR_LEN_ERR] = "InRangeLengthErrors", 59 [ETHTOOL_A_STATS_ETH_MAC_24_OOR_LEN] = "OutOfRangeLengthField", 60 [ETHTOOL_A_STATS_ETH_MAC_25_TOO_LONG_ERR] = "FrameTooLongErrors", 61 }; 62 63 const char stats_eth_ctrl_names[__ETHTOOL_A_STATS_ETH_CTRL_CNT][ETH_GSTRING_LEN] = { 64 [ETHTOOL_A_STATS_ETH_CTRL_3_TX] = "MACControlFramesTransmitted", 65 [ETHTOOL_A_STATS_ETH_CTRL_4_RX] = "MACControlFramesReceived", 66 [ETHTOOL_A_STATS_ETH_CTRL_5_RX_UNSUP] = "UnsupportedOpcodesReceived", 67 }; 68 69 const char stats_rmon_names[__ETHTOOL_A_STATS_RMON_CNT][ETH_GSTRING_LEN] = { 70 [ETHTOOL_A_STATS_RMON_UNDERSIZE] = "etherStatsUndersizePkts", 71 [ETHTOOL_A_STATS_RMON_OVERSIZE] = "etherStatsOversizePkts", 72 [ETHTOOL_A_STATS_RMON_FRAG] = "etherStatsFragments", 73 [ETHTOOL_A_STATS_RMON_JABBER] = "etherStatsJabbers", 74 }; 75 76 const struct nla_policy ethnl_stats_get_policy[ETHTOOL_A_STATS_GROUPS + 1] = { 77 [ETHTOOL_A_STATS_HEADER] = 78 NLA_POLICY_NESTED(ethnl_header_policy), 79 [ETHTOOL_A_STATS_GROUPS] = { .type = NLA_NESTED }, 80 }; 81 82 static int stats_parse_request(struct ethnl_req_info *req_base, 83 struct nlattr **tb, 84 struct netlink_ext_ack *extack) 85 { 86 struct stats_req_info *req_info = STATS_REQINFO(req_base); 87 bool mod = false; 88 int err; 89 90 err = ethnl_update_bitset(req_info->stat_mask, __ETHTOOL_STATS_CNT, 91 tb[ETHTOOL_A_STATS_GROUPS], stats_std_names, 92 extack, &mod); 93 if (err) 94 return err; 95 96 if (!mod) { 97 NL_SET_ERR_MSG(extack, "no stats requested"); 98 return -EINVAL; 99 } 100 101 return 0; 102 } 103 104 static int stats_prepare_data(const struct ethnl_req_info *req_base, 105 struct ethnl_reply_data *reply_base, 106 struct genl_info *info) 107 { 108 const struct stats_req_info *req_info = STATS_REQINFO(req_base); 109 struct stats_reply_data *data = STATS_REPDATA(reply_base); 110 struct net_device *dev = reply_base->dev; 111 int ret; 112 113 ret = ethnl_ops_begin(dev); 114 if (ret < 0) 115 return ret; 116 117 memset(&data->phy_stats, 0xff, sizeof(data->phy_stats)); 118 memset(&data->mac_stats, 0xff, sizeof(data->mac_stats)); 119 memset(&data->ctrl_stats, 0xff, sizeof(data->mac_stats)); 120 memset(&data->rmon_stats, 0xff, sizeof(data->rmon_stats)); 121 122 if (test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask) && 123 dev->ethtool_ops->get_eth_phy_stats) 124 dev->ethtool_ops->get_eth_phy_stats(dev, &data->phy_stats); 125 if (test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask) && 126 dev->ethtool_ops->get_eth_mac_stats) 127 dev->ethtool_ops->get_eth_mac_stats(dev, &data->mac_stats); 128 if (test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask) && 129 dev->ethtool_ops->get_eth_ctrl_stats) 130 dev->ethtool_ops->get_eth_ctrl_stats(dev, &data->ctrl_stats); 131 if (test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask) && 132 dev->ethtool_ops->get_rmon_stats) 133 dev->ethtool_ops->get_rmon_stats(dev, &data->rmon_stats, 134 &data->rmon_ranges); 135 136 ethnl_ops_complete(dev); 137 return 0; 138 } 139 140 static int stats_reply_size(const struct ethnl_req_info *req_base, 141 const struct ethnl_reply_data *reply_base) 142 { 143 const struct stats_req_info *req_info = STATS_REQINFO(req_base); 144 unsigned int n_grps = 0, n_stats = 0; 145 int len = 0; 146 147 if (test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask)) { 148 n_stats += sizeof(struct ethtool_eth_phy_stats) / sizeof(u64); 149 n_grps++; 150 } 151 if (test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask)) { 152 n_stats += sizeof(struct ethtool_eth_mac_stats) / sizeof(u64); 153 n_grps++; 154 } 155 if (test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask)) { 156 n_stats += sizeof(struct ethtool_eth_ctrl_stats) / sizeof(u64); 157 n_grps++; 158 } 159 if (test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask)) { 160 n_stats += sizeof(struct ethtool_rmon_stats) / sizeof(u64); 161 n_grps++; 162 /* Above includes the space for _A_STATS_GRP_HIST_VALs */ 163 164 len += (nla_total_size(0) + /* _A_STATS_GRP_HIST */ 165 nla_total_size(4) + /* _A_STATS_GRP_HIST_BKT_LOW */ 166 nla_total_size(4)) * /* _A_STATS_GRP_HIST_BKT_HI */ 167 ETHTOOL_RMON_HIST_MAX * 2; 168 } 169 170 len += n_grps * (nla_total_size(0) + /* _A_STATS_GRP */ 171 nla_total_size(4) + /* _A_STATS_GRP_ID */ 172 nla_total_size(4)); /* _A_STATS_GRP_SS_ID */ 173 len += n_stats * (nla_total_size(0) + /* _A_STATS_GRP_STAT */ 174 nla_total_size_64bit(sizeof(u64))); 175 176 return len; 177 } 178 179 static int stat_put(struct sk_buff *skb, u16 attrtype, u64 val) 180 { 181 struct nlattr *nest; 182 int ret; 183 184 if (val == ETHTOOL_STAT_NOT_SET) 185 return 0; 186 187 /* We want to start stats attr types from 0, so we don't have a type 188 * for pad inside ETHTOOL_A_STATS_GRP_STAT. Pad things on the outside 189 * of ETHTOOL_A_STATS_GRP_STAT. Since we're one nest away from the 190 * actual attr we're 4B off - nla_need_padding_for_64bit() & co. 191 * can't be used. 192 */ 193 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS 194 if (!IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8)) 195 if (!nla_reserve(skb, ETHTOOL_A_STATS_GRP_PAD, 0)) 196 return -EMSGSIZE; 197 #endif 198 199 nest = nla_nest_start(skb, ETHTOOL_A_STATS_GRP_STAT); 200 if (!nest) 201 return -EMSGSIZE; 202 203 ret = nla_put_u64_64bit(skb, attrtype, val, -1 /* not used */); 204 if (ret) { 205 nla_nest_cancel(skb, nest); 206 return ret; 207 } 208 209 nla_nest_end(skb, nest); 210 return 0; 211 } 212 213 static int stats_put_phy_stats(struct sk_buff *skb, 214 const struct stats_reply_data *data) 215 { 216 if (stat_put(skb, ETHTOOL_A_STATS_ETH_PHY_5_SYM_ERR, 217 data->phy_stats.SymbolErrorDuringCarrier)) 218 return -EMSGSIZE; 219 return 0; 220 } 221 222 static int stats_put_mac_stats(struct sk_buff *skb, 223 const struct stats_reply_data *data) 224 { 225 if (stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_2_TX_PKT, 226 data->mac_stats.FramesTransmittedOK) || 227 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_3_SINGLE_COL, 228 data->mac_stats.SingleCollisionFrames) || 229 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_4_MULTI_COL, 230 data->mac_stats.MultipleCollisionFrames) || 231 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_5_RX_PKT, 232 data->mac_stats.FramesReceivedOK) || 233 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_6_FCS_ERR, 234 data->mac_stats.FrameCheckSequenceErrors) || 235 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_7_ALIGN_ERR, 236 data->mac_stats.AlignmentErrors) || 237 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_8_TX_BYTES, 238 data->mac_stats.OctetsTransmittedOK) || 239 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_9_TX_DEFER, 240 data->mac_stats.FramesWithDeferredXmissions) || 241 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_10_LATE_COL, 242 data->mac_stats.LateCollisions) || 243 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_11_XS_COL, 244 data->mac_stats.FramesAbortedDueToXSColls) || 245 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_12_TX_INT_ERR, 246 data->mac_stats.FramesLostDueToIntMACXmitError) || 247 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_13_CS_ERR, 248 data->mac_stats.CarrierSenseErrors) || 249 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_14_RX_BYTES, 250 data->mac_stats.OctetsReceivedOK) || 251 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_15_RX_INT_ERR, 252 data->mac_stats.FramesLostDueToIntMACRcvError) || 253 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_18_TX_MCAST, 254 data->mac_stats.MulticastFramesXmittedOK) || 255 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_19_TX_BCAST, 256 data->mac_stats.BroadcastFramesXmittedOK) || 257 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_20_XS_DEFER, 258 data->mac_stats.FramesWithExcessiveDeferral) || 259 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_21_RX_MCAST, 260 data->mac_stats.MulticastFramesReceivedOK) || 261 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_22_RX_BCAST, 262 data->mac_stats.BroadcastFramesReceivedOK) || 263 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_23_IR_LEN_ERR, 264 data->mac_stats.InRangeLengthErrors) || 265 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_24_OOR_LEN, 266 data->mac_stats.OutOfRangeLengthField) || 267 stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_25_TOO_LONG_ERR, 268 data->mac_stats.FrameTooLongErrors)) 269 return -EMSGSIZE; 270 return 0; 271 } 272 273 static int stats_put_ctrl_stats(struct sk_buff *skb, 274 const struct stats_reply_data *data) 275 { 276 if (stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_3_TX, 277 data->ctrl_stats.MACControlFramesTransmitted) || 278 stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_4_RX, 279 data->ctrl_stats.MACControlFramesReceived) || 280 stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_5_RX_UNSUP, 281 data->ctrl_stats.UnsupportedOpcodesReceived)) 282 return -EMSGSIZE; 283 return 0; 284 } 285 286 static int stats_put_rmon_hist(struct sk_buff *skb, u32 attr, const u64 *hist, 287 const struct ethtool_rmon_hist_range *ranges) 288 { 289 struct nlattr *nest; 290 int i; 291 292 if (!ranges) 293 return 0; 294 295 for (i = 0; i < ETHTOOL_RMON_HIST_MAX; i++) { 296 if (!ranges[i].low && !ranges[i].high) 297 break; 298 if (hist[i] == ETHTOOL_STAT_NOT_SET) 299 continue; 300 301 nest = nla_nest_start(skb, attr); 302 if (!nest) 303 return -EMSGSIZE; 304 305 if (nla_put_u32(skb, ETHTOOL_A_STATS_GRP_HIST_BKT_LOW, 306 ranges[i].low) || 307 nla_put_u32(skb, ETHTOOL_A_STATS_GRP_HIST_BKT_HI, 308 ranges[i].high) || 309 nla_put_u64_64bit(skb, ETHTOOL_A_STATS_GRP_HIST_VAL, 310 hist[i], ETHTOOL_A_STATS_GRP_PAD)) 311 goto err_cancel_hist; 312 313 nla_nest_end(skb, nest); 314 } 315 316 return 0; 317 318 err_cancel_hist: 319 nla_nest_cancel(skb, nest); 320 return -EMSGSIZE; 321 } 322 323 static int stats_put_rmon_stats(struct sk_buff *skb, 324 const struct stats_reply_data *data) 325 { 326 if (stats_put_rmon_hist(skb, ETHTOOL_A_STATS_GRP_HIST_RX, 327 data->rmon_stats.hist, data->rmon_ranges) || 328 stats_put_rmon_hist(skb, ETHTOOL_A_STATS_GRP_HIST_TX, 329 data->rmon_stats.hist_tx, data->rmon_ranges)) 330 return -EMSGSIZE; 331 332 if (stat_put(skb, ETHTOOL_A_STATS_RMON_UNDERSIZE, 333 data->rmon_stats.undersize_pkts) || 334 stat_put(skb, ETHTOOL_A_STATS_RMON_OVERSIZE, 335 data->rmon_stats.oversize_pkts) || 336 stat_put(skb, ETHTOOL_A_STATS_RMON_FRAG, 337 data->rmon_stats.fragments) || 338 stat_put(skb, ETHTOOL_A_STATS_RMON_JABBER, 339 data->rmon_stats.jabbers)) 340 return -EMSGSIZE; 341 342 return 0; 343 } 344 345 static int stats_put_stats(struct sk_buff *skb, 346 const struct stats_reply_data *data, 347 u32 id, u32 ss_id, 348 int (*cb)(struct sk_buff *skb, 349 const struct stats_reply_data *data)) 350 { 351 struct nlattr *nest; 352 353 nest = nla_nest_start(skb, ETHTOOL_A_STATS_GRP); 354 if (!nest) 355 return -EMSGSIZE; 356 357 if (nla_put_u32(skb, ETHTOOL_A_STATS_GRP_ID, id) || 358 nla_put_u32(skb, ETHTOOL_A_STATS_GRP_SS_ID, ss_id)) 359 goto err_cancel; 360 361 if (cb(skb, data)) 362 goto err_cancel; 363 364 nla_nest_end(skb, nest); 365 return 0; 366 367 err_cancel: 368 nla_nest_cancel(skb, nest); 369 return -EMSGSIZE; 370 } 371 372 static int stats_fill_reply(struct sk_buff *skb, 373 const struct ethnl_req_info *req_base, 374 const struct ethnl_reply_data *reply_base) 375 { 376 const struct stats_req_info *req_info = STATS_REQINFO(req_base); 377 const struct stats_reply_data *data = STATS_REPDATA(reply_base); 378 int ret = 0; 379 380 if (!ret && test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask)) 381 ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_PHY, 382 ETH_SS_STATS_ETH_PHY, 383 stats_put_phy_stats); 384 if (!ret && test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask)) 385 ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_MAC, 386 ETH_SS_STATS_ETH_MAC, 387 stats_put_mac_stats); 388 if (!ret && test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask)) 389 ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_CTRL, 390 ETH_SS_STATS_ETH_CTRL, 391 stats_put_ctrl_stats); 392 if (!ret && test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask)) 393 ret = stats_put_stats(skb, data, ETHTOOL_STATS_RMON, 394 ETH_SS_STATS_RMON, stats_put_rmon_stats); 395 396 return ret; 397 } 398 399 const struct ethnl_request_ops ethnl_stats_request_ops = { 400 .request_cmd = ETHTOOL_MSG_STATS_GET, 401 .reply_cmd = ETHTOOL_MSG_STATS_GET_REPLY, 402 .hdr_attr = ETHTOOL_A_STATS_HEADER, 403 .req_info_size = sizeof(struct stats_req_info), 404 .reply_data_size = sizeof(struct stats_reply_data), 405 406 .parse_request = stats_parse_request, 407 .prepare_data = stats_prepare_data, 408 .reply_size = stats_reply_size, 409 .fill_reply = stats_fill_reply, 410 }; 411