1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* Copyright (c) 2021, Microsoft Corporation. */ 3 4 #include <linux/inetdevice.h> 5 #include <linux/etherdevice.h> 6 #include <linux/ethtool.h> 7 8 #include <net/mana/mana.h> 9 10 static const struct { 11 char name[ETH_GSTRING_LEN]; 12 u16 offset; 13 } mana_eth_stats[] = { 14 {"stop_queue", offsetof(struct mana_ethtool_stats, stop_queue)}, 15 {"wake_queue", offsetof(struct mana_ethtool_stats, wake_queue)}, 16 {"hc_rx_discards_no_wqe", offsetof(struct mana_ethtool_stats, 17 hc_rx_discards_no_wqe)}, 18 {"hc_rx_err_vport_disabled", offsetof(struct mana_ethtool_stats, 19 hc_rx_err_vport_disabled)}, 20 {"hc_rx_bytes", offsetof(struct mana_ethtool_stats, hc_rx_bytes)}, 21 {"hc_rx_ucast_pkts", offsetof(struct mana_ethtool_stats, 22 hc_rx_ucast_pkts)}, 23 {"hc_rx_ucast_bytes", offsetof(struct mana_ethtool_stats, 24 hc_rx_ucast_bytes)}, 25 {"hc_rx_bcast_pkts", offsetof(struct mana_ethtool_stats, 26 hc_rx_bcast_pkts)}, 27 {"hc_rx_bcast_bytes", offsetof(struct mana_ethtool_stats, 28 hc_rx_bcast_bytes)}, 29 {"hc_rx_mcast_pkts", offsetof(struct mana_ethtool_stats, 30 hc_rx_mcast_pkts)}, 31 {"hc_rx_mcast_bytes", offsetof(struct mana_ethtool_stats, 32 hc_rx_mcast_bytes)}, 33 {"hc_tx_err_gf_disabled", offsetof(struct mana_ethtool_stats, 34 hc_tx_err_gf_disabled)}, 35 {"hc_tx_err_vport_disabled", offsetof(struct mana_ethtool_stats, 36 hc_tx_err_vport_disabled)}, 37 {"hc_tx_err_inval_vportoffset_pkt", 38 offsetof(struct mana_ethtool_stats, 39 hc_tx_err_inval_vportoffset_pkt)}, 40 {"hc_tx_err_vlan_enforcement", offsetof(struct mana_ethtool_stats, 41 hc_tx_err_vlan_enforcement)}, 42 {"hc_tx_err_eth_type_enforcement", 43 offsetof(struct mana_ethtool_stats, hc_tx_err_eth_type_enforcement)}, 44 {"hc_tx_err_sa_enforcement", offsetof(struct mana_ethtool_stats, 45 hc_tx_err_sa_enforcement)}, 46 {"hc_tx_err_sqpdid_enforcement", 47 offsetof(struct mana_ethtool_stats, hc_tx_err_sqpdid_enforcement)}, 48 {"hc_tx_err_cqpdid_enforcement", 49 offsetof(struct mana_ethtool_stats, hc_tx_err_cqpdid_enforcement)}, 50 {"hc_tx_err_mtu_violation", offsetof(struct mana_ethtool_stats, 51 hc_tx_err_mtu_violation)}, 52 {"hc_tx_err_inval_oob", offsetof(struct mana_ethtool_stats, 53 hc_tx_err_inval_oob)}, 54 {"hc_tx_err_gdma", offsetof(struct mana_ethtool_stats, 55 hc_tx_err_gdma)}, 56 {"hc_tx_bytes", offsetof(struct mana_ethtool_stats, hc_tx_bytes)}, 57 {"hc_tx_ucast_pkts", offsetof(struct mana_ethtool_stats, 58 hc_tx_ucast_pkts)}, 59 {"hc_tx_ucast_bytes", offsetof(struct mana_ethtool_stats, 60 hc_tx_ucast_bytes)}, 61 {"hc_tx_bcast_pkts", offsetof(struct mana_ethtool_stats, 62 hc_tx_bcast_pkts)}, 63 {"hc_tx_bcast_bytes", offsetof(struct mana_ethtool_stats, 64 hc_tx_bcast_bytes)}, 65 {"hc_tx_mcast_pkts", offsetof(struct mana_ethtool_stats, 66 hc_tx_mcast_pkts)}, 67 {"hc_tx_mcast_bytes", offsetof(struct mana_ethtool_stats, 68 hc_tx_mcast_bytes)}, 69 {"tx_cq_err", offsetof(struct mana_ethtool_stats, tx_cqe_err)}, 70 {"tx_cqe_unknown_type", offsetof(struct mana_ethtool_stats, 71 tx_cqe_unknown_type)}, 72 {"rx_coalesced_err", offsetof(struct mana_ethtool_stats, 73 rx_coalesced_err)}, 74 {"rx_cqe_unknown_type", offsetof(struct mana_ethtool_stats, 75 rx_cqe_unknown_type)}, 76 }; 77 78 static int mana_get_sset_count(struct net_device *ndev, int stringset) 79 { 80 struct mana_port_context *apc = netdev_priv(ndev); 81 unsigned int num_queues = apc->num_queues; 82 83 if (stringset != ETH_SS_STATS) 84 return -EINVAL; 85 86 return ARRAY_SIZE(mana_eth_stats) + num_queues * 87 (MANA_STATS_RX_COUNT + MANA_STATS_TX_COUNT); 88 } 89 90 static void mana_get_strings(struct net_device *ndev, u32 stringset, u8 *data) 91 { 92 struct mana_port_context *apc = netdev_priv(ndev); 93 unsigned int num_queues = apc->num_queues; 94 u8 *p = data; 95 int i; 96 97 if (stringset != ETH_SS_STATS) 98 return; 99 100 for (i = 0; i < ARRAY_SIZE(mana_eth_stats); i++) { 101 memcpy(p, mana_eth_stats[i].name, ETH_GSTRING_LEN); 102 p += ETH_GSTRING_LEN; 103 } 104 105 for (i = 0; i < num_queues; i++) { 106 sprintf(p, "rx_%d_packets", i); 107 p += ETH_GSTRING_LEN; 108 sprintf(p, "rx_%d_bytes", i); 109 p += ETH_GSTRING_LEN; 110 sprintf(p, "rx_%d_xdp_drop", i); 111 p += ETH_GSTRING_LEN; 112 sprintf(p, "rx_%d_xdp_tx", i); 113 p += ETH_GSTRING_LEN; 114 sprintf(p, "rx_%d_xdp_redirect", i); 115 p += ETH_GSTRING_LEN; 116 } 117 118 for (i = 0; i < num_queues; i++) { 119 sprintf(p, "tx_%d_packets", i); 120 p += ETH_GSTRING_LEN; 121 sprintf(p, "tx_%d_bytes", i); 122 p += ETH_GSTRING_LEN; 123 sprintf(p, "tx_%d_xdp_xmit", i); 124 p += ETH_GSTRING_LEN; 125 sprintf(p, "tx_%d_tso_packets", i); 126 p += ETH_GSTRING_LEN; 127 sprintf(p, "tx_%d_tso_bytes", i); 128 p += ETH_GSTRING_LEN; 129 sprintf(p, "tx_%d_tso_inner_packets", i); 130 p += ETH_GSTRING_LEN; 131 sprintf(p, "tx_%d_tso_inner_bytes", i); 132 p += ETH_GSTRING_LEN; 133 sprintf(p, "tx_%d_long_pkt_fmt", i); 134 p += ETH_GSTRING_LEN; 135 sprintf(p, "tx_%d_short_pkt_fmt", i); 136 p += ETH_GSTRING_LEN; 137 sprintf(p, "tx_%d_csum_partial", i); 138 p += ETH_GSTRING_LEN; 139 sprintf(p, "tx_%d_mana_map_err", i); 140 p += ETH_GSTRING_LEN; 141 } 142 } 143 144 static void mana_get_ethtool_stats(struct net_device *ndev, 145 struct ethtool_stats *e_stats, u64 *data) 146 { 147 struct mana_port_context *apc = netdev_priv(ndev); 148 unsigned int num_queues = apc->num_queues; 149 void *eth_stats = &apc->eth_stats; 150 struct mana_stats_rx *rx_stats; 151 struct mana_stats_tx *tx_stats; 152 unsigned int start; 153 u64 packets, bytes; 154 u64 xdp_redirect; 155 u64 xdp_xmit; 156 u64 xdp_drop; 157 u64 xdp_tx; 158 u64 tso_packets; 159 u64 tso_bytes; 160 u64 tso_inner_packets; 161 u64 tso_inner_bytes; 162 u64 long_pkt_fmt; 163 u64 short_pkt_fmt; 164 u64 csum_partial; 165 u64 mana_map_err; 166 int q, i = 0; 167 168 if (!apc->port_is_up) 169 return; 170 /* we call mana function to update stats from GDMA */ 171 mana_query_gf_stats(apc); 172 173 for (q = 0; q < ARRAY_SIZE(mana_eth_stats); q++) 174 data[i++] = *(u64 *)(eth_stats + mana_eth_stats[q].offset); 175 176 for (q = 0; q < num_queues; q++) { 177 rx_stats = &apc->rxqs[q]->stats; 178 179 do { 180 start = u64_stats_fetch_begin(&rx_stats->syncp); 181 packets = rx_stats->packets; 182 bytes = rx_stats->bytes; 183 xdp_drop = rx_stats->xdp_drop; 184 xdp_tx = rx_stats->xdp_tx; 185 xdp_redirect = rx_stats->xdp_redirect; 186 } while (u64_stats_fetch_retry(&rx_stats->syncp, start)); 187 188 data[i++] = packets; 189 data[i++] = bytes; 190 data[i++] = xdp_drop; 191 data[i++] = xdp_tx; 192 data[i++] = xdp_redirect; 193 } 194 195 for (q = 0; q < num_queues; q++) { 196 tx_stats = &apc->tx_qp[q].txq.stats; 197 198 do { 199 start = u64_stats_fetch_begin(&tx_stats->syncp); 200 packets = tx_stats->packets; 201 bytes = tx_stats->bytes; 202 xdp_xmit = tx_stats->xdp_xmit; 203 tso_packets = tx_stats->tso_packets; 204 tso_bytes = tx_stats->tso_bytes; 205 tso_inner_packets = tx_stats->tso_inner_packets; 206 tso_inner_bytes = tx_stats->tso_inner_bytes; 207 long_pkt_fmt = tx_stats->long_pkt_fmt; 208 short_pkt_fmt = tx_stats->short_pkt_fmt; 209 csum_partial = tx_stats->csum_partial; 210 mana_map_err = tx_stats->mana_map_err; 211 } while (u64_stats_fetch_retry(&tx_stats->syncp, start)); 212 213 data[i++] = packets; 214 data[i++] = bytes; 215 data[i++] = xdp_xmit; 216 data[i++] = tso_packets; 217 data[i++] = tso_bytes; 218 data[i++] = tso_inner_packets; 219 data[i++] = tso_inner_bytes; 220 data[i++] = long_pkt_fmt; 221 data[i++] = short_pkt_fmt; 222 data[i++] = csum_partial; 223 data[i++] = mana_map_err; 224 } 225 } 226 227 static int mana_get_rxnfc(struct net_device *ndev, struct ethtool_rxnfc *cmd, 228 u32 *rules) 229 { 230 struct mana_port_context *apc = netdev_priv(ndev); 231 232 switch (cmd->cmd) { 233 case ETHTOOL_GRXRINGS: 234 cmd->data = apc->num_queues; 235 return 0; 236 } 237 238 return -EOPNOTSUPP; 239 } 240 241 static u32 mana_get_rxfh_key_size(struct net_device *ndev) 242 { 243 return MANA_HASH_KEY_SIZE; 244 } 245 246 static u32 mana_rss_indir_size(struct net_device *ndev) 247 { 248 return MANA_INDIRECT_TABLE_SIZE; 249 } 250 251 static int mana_get_rxfh(struct net_device *ndev, 252 struct ethtool_rxfh_param *rxfh) 253 { 254 struct mana_port_context *apc = netdev_priv(ndev); 255 int i; 256 257 rxfh->hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */ 258 259 if (rxfh->indir) { 260 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) 261 rxfh->indir[i] = apc->indir_table[i]; 262 } 263 264 if (rxfh->key) 265 memcpy(rxfh->key, apc->hashkey, MANA_HASH_KEY_SIZE); 266 267 return 0; 268 } 269 270 static int mana_set_rxfh(struct net_device *ndev, 271 struct ethtool_rxfh_param *rxfh, 272 struct netlink_ext_ack *extack) 273 { 274 struct mana_port_context *apc = netdev_priv(ndev); 275 bool update_hash = false, update_table = false; 276 u32 save_table[MANA_INDIRECT_TABLE_SIZE]; 277 u8 save_key[MANA_HASH_KEY_SIZE]; 278 int i, err; 279 280 if (!apc->port_is_up) 281 return -EOPNOTSUPP; 282 283 if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE && 284 rxfh->hfunc != ETH_RSS_HASH_TOP) 285 return -EOPNOTSUPP; 286 287 if (rxfh->indir) { 288 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) 289 if (rxfh->indir[i] >= apc->num_queues) 290 return -EINVAL; 291 292 update_table = true; 293 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) { 294 save_table[i] = apc->indir_table[i]; 295 apc->indir_table[i] = rxfh->indir[i]; 296 } 297 } 298 299 if (rxfh->key) { 300 update_hash = true; 301 memcpy(save_key, apc->hashkey, MANA_HASH_KEY_SIZE); 302 memcpy(apc->hashkey, rxfh->key, MANA_HASH_KEY_SIZE); 303 } 304 305 err = mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table); 306 307 if (err) { /* recover to original values */ 308 if (update_table) { 309 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) 310 apc->indir_table[i] = save_table[i]; 311 } 312 313 if (update_hash) 314 memcpy(apc->hashkey, save_key, MANA_HASH_KEY_SIZE); 315 316 mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table); 317 } 318 319 return err; 320 } 321 322 static void mana_get_channels(struct net_device *ndev, 323 struct ethtool_channels *channel) 324 { 325 struct mana_port_context *apc = netdev_priv(ndev); 326 327 channel->max_combined = apc->max_queues; 328 channel->combined_count = apc->num_queues; 329 } 330 331 static int mana_set_channels(struct net_device *ndev, 332 struct ethtool_channels *channels) 333 { 334 struct mana_port_context *apc = netdev_priv(ndev); 335 unsigned int new_count = channels->combined_count; 336 unsigned int old_count = apc->num_queues; 337 int err, err2; 338 339 err = mana_detach(ndev, false); 340 if (err) { 341 netdev_err(ndev, "mana_detach failed: %d\n", err); 342 return err; 343 } 344 345 apc->num_queues = new_count; 346 err = mana_attach(ndev); 347 if (!err) 348 return 0; 349 350 netdev_err(ndev, "mana_attach failed: %d\n", err); 351 352 /* Try to roll it back to the old configuration. */ 353 apc->num_queues = old_count; 354 err2 = mana_attach(ndev); 355 if (err2) 356 netdev_err(ndev, "mana re-attach failed: %d\n", err2); 357 358 return err; 359 } 360 361 const struct ethtool_ops mana_ethtool_ops = { 362 .get_ethtool_stats = mana_get_ethtool_stats, 363 .get_sset_count = mana_get_sset_count, 364 .get_strings = mana_get_strings, 365 .get_rxnfc = mana_get_rxnfc, 366 .get_rxfh_key_size = mana_get_rxfh_key_size, 367 .get_rxfh_indir_size = mana_rss_indir_size, 368 .get_rxfh = mana_get_rxfh, 369 .set_rxfh = mana_set_rxfh, 370 .get_channels = mana_get_channels, 371 .set_channels = mana_set_channels, 372 }; 373