1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) 2 #include "dpaa2-eth.h" 3 /* Copyright 2020 NXP 4 */ 5 6 #define DPAA2_ETH_TRAP_DROP(_id, _group_id) \ 7 DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \ 8 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, 0) 9 10 static const struct devlink_trap_group dpaa2_eth_trap_groups_arr[] = { 11 DEVLINK_TRAP_GROUP_GENERIC(PARSER_ERROR_DROPS, 0), 12 }; 13 14 static const struct devlink_trap dpaa2_eth_traps_arr[] = { 15 DPAA2_ETH_TRAP_DROP(VXLAN_PARSING, PARSER_ERROR_DROPS), 16 DPAA2_ETH_TRAP_DROP(LLC_SNAP_PARSING, PARSER_ERROR_DROPS), 17 DPAA2_ETH_TRAP_DROP(VLAN_PARSING, PARSER_ERROR_DROPS), 18 DPAA2_ETH_TRAP_DROP(PPPOE_PPP_PARSING, PARSER_ERROR_DROPS), 19 DPAA2_ETH_TRAP_DROP(MPLS_PARSING, PARSER_ERROR_DROPS), 20 DPAA2_ETH_TRAP_DROP(ARP_PARSING, PARSER_ERROR_DROPS), 21 DPAA2_ETH_TRAP_DROP(IP_1_PARSING, PARSER_ERROR_DROPS), 22 DPAA2_ETH_TRAP_DROP(IP_N_PARSING, PARSER_ERROR_DROPS), 23 DPAA2_ETH_TRAP_DROP(GRE_PARSING, PARSER_ERROR_DROPS), 24 DPAA2_ETH_TRAP_DROP(UDP_PARSING, PARSER_ERROR_DROPS), 25 DPAA2_ETH_TRAP_DROP(TCP_PARSING, PARSER_ERROR_DROPS), 26 DPAA2_ETH_TRAP_DROP(IPSEC_PARSING, PARSER_ERROR_DROPS), 27 DPAA2_ETH_TRAP_DROP(SCTP_PARSING, PARSER_ERROR_DROPS), 28 DPAA2_ETH_TRAP_DROP(DCCP_PARSING, PARSER_ERROR_DROPS), 29 DPAA2_ETH_TRAP_DROP(GTP_PARSING, PARSER_ERROR_DROPS), 30 DPAA2_ETH_TRAP_DROP(ESP_PARSING, PARSER_ERROR_DROPS), 31 }; 32 33 static int dpaa2_eth_dl_info_get(struct devlink *devlink, 34 struct devlink_info_req *req, 35 struct netlink_ext_ack *extack) 36 { 37 struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink); 38 struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv; 39 char buf[10]; 40 int err; 41 42 err = devlink_info_driver_name_put(req, KBUILD_MODNAME); 43 if (err) 44 return err; 45 46 scnprintf(buf, 10, "%d.%d", priv->dpni_ver_major, priv->dpni_ver_minor); 47 err = devlink_info_version_running_put(req, "dpni", buf); 48 if (err) 49 return err; 50 51 return 0; 52 } 53 54 static struct dpaa2_eth_trap_item * 55 dpaa2_eth_dl_trap_item_lookup(struct dpaa2_eth_priv *priv, u16 trap_id) 56 { 57 struct dpaa2_eth_trap_data *dpaa2_eth_trap_data = priv->trap_data; 58 int i; 59 60 for (i = 0; i < ARRAY_SIZE(dpaa2_eth_traps_arr); i++) { 61 if (dpaa2_eth_traps_arr[i].id == trap_id) 62 return &dpaa2_eth_trap_data->trap_items_arr[i]; 63 } 64 65 return NULL; 66 } 67 68 struct dpaa2_eth_trap_item *dpaa2_eth_dl_get_trap(struct dpaa2_eth_priv *priv, 69 struct dpaa2_fapr *fapr) 70 { 71 static const struct dpaa2_faf_error_bit { 72 int position; 73 enum devlink_trap_generic_id trap_id; 74 } faf_bits[] = { 75 { .position = 5, .trap_id = DEVLINK_TRAP_GENERIC_ID_VXLAN_PARSING }, 76 { .position = 20, .trap_id = DEVLINK_TRAP_GENERIC_ID_LLC_SNAP_PARSING }, 77 { .position = 24, .trap_id = DEVLINK_TRAP_GENERIC_ID_VLAN_PARSING }, 78 { .position = 26, .trap_id = DEVLINK_TRAP_GENERIC_ID_PPPOE_PPP_PARSING }, 79 { .position = 29, .trap_id = DEVLINK_TRAP_GENERIC_ID_MPLS_PARSING }, 80 { .position = 31, .trap_id = DEVLINK_TRAP_GENERIC_ID_ARP_PARSING }, 81 { .position = 52, .trap_id = DEVLINK_TRAP_GENERIC_ID_IP_1_PARSING }, 82 { .position = 61, .trap_id = DEVLINK_TRAP_GENERIC_ID_IP_N_PARSING }, 83 { .position = 67, .trap_id = DEVLINK_TRAP_GENERIC_ID_GRE_PARSING }, 84 { .position = 71, .trap_id = DEVLINK_TRAP_GENERIC_ID_UDP_PARSING }, 85 { .position = 76, .trap_id = DEVLINK_TRAP_GENERIC_ID_TCP_PARSING }, 86 { .position = 80, .trap_id = DEVLINK_TRAP_GENERIC_ID_IPSEC_PARSING }, 87 { .position = 82, .trap_id = DEVLINK_TRAP_GENERIC_ID_SCTP_PARSING }, 88 { .position = 84, .trap_id = DEVLINK_TRAP_GENERIC_ID_DCCP_PARSING }, 89 { .position = 88, .trap_id = DEVLINK_TRAP_GENERIC_ID_GTP_PARSING }, 90 { .position = 90, .trap_id = DEVLINK_TRAP_GENERIC_ID_ESP_PARSING }, 91 }; 92 u64 faf_word; 93 u64 mask; 94 int i; 95 96 for (i = 0; i < ARRAY_SIZE(faf_bits); i++) { 97 if (faf_bits[i].position < 32) { 98 /* Low part of FAF. 99 * position ranges from 31 to 0, mask from 0 to 31. 100 */ 101 mask = 1ull << (31 - faf_bits[i].position); 102 faf_word = __le32_to_cpu(fapr->faf_lo); 103 } else { 104 /* High part of FAF. 105 * position ranges from 95 to 32, mask from 0 to 63. 106 */ 107 mask = 1ull << (63 - (faf_bits[i].position - 32)); 108 faf_word = __le64_to_cpu(fapr->faf_hi); 109 } 110 if (faf_word & mask) 111 return dpaa2_eth_dl_trap_item_lookup(priv, faf_bits[i].trap_id); 112 } 113 return NULL; 114 } 115 116 static int dpaa2_eth_dl_trap_init(struct devlink *devlink, 117 const struct devlink_trap *trap, 118 void *trap_ctx) 119 { 120 struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink); 121 struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv; 122 struct dpaa2_eth_trap_item *dpaa2_eth_trap_item; 123 124 dpaa2_eth_trap_item = dpaa2_eth_dl_trap_item_lookup(priv, trap->id); 125 if (WARN_ON(!dpaa2_eth_trap_item)) 126 return -ENOENT; 127 128 dpaa2_eth_trap_item->trap_ctx = trap_ctx; 129 130 return 0; 131 } 132 133 static int dpaa2_eth_dl_trap_action_set(struct devlink *devlink, 134 const struct devlink_trap *trap, 135 enum devlink_trap_action action, 136 struct netlink_ext_ack *extack) 137 { 138 /* No support for changing the action of an independent packet trap, 139 * only per trap group - parser error drops 140 */ 141 NL_SET_ERR_MSG_MOD(extack, 142 "Cannot change trap action independently of group"); 143 return -EOPNOTSUPP; 144 } 145 146 static int dpaa2_eth_dl_trap_group_action_set(struct devlink *devlink, 147 const struct devlink_trap_group *group, 148 enum devlink_trap_action action, 149 struct netlink_ext_ack *extack) 150 { 151 struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink); 152 struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv; 153 struct net_device *net_dev = priv->net_dev; 154 struct device *dev = net_dev->dev.parent; 155 struct dpni_error_cfg err_cfg = {0}; 156 int err; 157 158 if (group->id != DEVLINK_TRAP_GROUP_GENERIC_ID_PARSER_ERROR_DROPS) 159 return -EOPNOTSUPP; 160 161 /* Configure handling of frames marked as errors from the parser */ 162 err_cfg.errors = DPAA2_FAS_RX_ERR_MASK; 163 err_cfg.set_frame_annotation = 1; 164 165 switch (action) { 166 case DEVLINK_TRAP_ACTION_DROP: 167 err_cfg.error_action = DPNI_ERROR_ACTION_DISCARD; 168 break; 169 case DEVLINK_TRAP_ACTION_TRAP: 170 err_cfg.error_action = DPNI_ERROR_ACTION_SEND_TO_ERROR_QUEUE; 171 break; 172 default: 173 return -EOPNOTSUPP; 174 } 175 176 err = dpni_set_errors_behavior(priv->mc_io, 0, priv->mc_token, &err_cfg); 177 if (err) { 178 dev_err(dev, "dpni_set_errors_behavior failed\n"); 179 return err; 180 } 181 182 return 0; 183 } 184 185 static const struct devlink_ops dpaa2_eth_devlink_ops = { 186 .info_get = dpaa2_eth_dl_info_get, 187 .trap_init = dpaa2_eth_dl_trap_init, 188 .trap_action_set = dpaa2_eth_dl_trap_action_set, 189 .trap_group_action_set = dpaa2_eth_dl_trap_group_action_set, 190 }; 191 192 int dpaa2_eth_dl_alloc(struct dpaa2_eth_priv *priv) 193 { 194 struct net_device *net_dev = priv->net_dev; 195 struct device *dev = net_dev->dev.parent; 196 struct dpaa2_eth_devlink_priv *dl_priv; 197 198 priv->devlink = 199 devlink_alloc(&dpaa2_eth_devlink_ops, sizeof(*dl_priv), dev); 200 if (!priv->devlink) { 201 dev_err(dev, "devlink_alloc failed\n"); 202 return -ENOMEM; 203 } 204 dl_priv = devlink_priv(priv->devlink); 205 dl_priv->dpaa2_priv = priv; 206 return 0; 207 } 208 209 void dpaa2_eth_dl_free(struct dpaa2_eth_priv *priv) 210 { 211 devlink_free(priv->devlink); 212 } 213 214 215 void dpaa2_eth_dl_register(struct dpaa2_eth_priv *priv) 216 { 217 devlink_register(priv->devlink); 218 } 219 220 void dpaa2_eth_dl_unregister(struct dpaa2_eth_priv *priv) 221 { 222 devlink_unregister(priv->devlink); 223 } 224 225 int dpaa2_eth_dl_port_add(struct dpaa2_eth_priv *priv) 226 { 227 struct devlink_port *devlink_port = &priv->devlink_port; 228 struct devlink_port_attrs attrs = {}; 229 int err; 230 231 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; 232 devlink_port_attrs_set(devlink_port, &attrs); 233 234 err = devlink_port_register(priv->devlink, devlink_port, 0); 235 if (err) 236 return err; 237 238 devlink_port_type_eth_set(devlink_port, priv->net_dev); 239 240 return 0; 241 } 242 243 void dpaa2_eth_dl_port_del(struct dpaa2_eth_priv *priv) 244 { 245 struct devlink_port *devlink_port = &priv->devlink_port; 246 247 devlink_port_type_clear(devlink_port); 248 devlink_port_unregister(devlink_port); 249 } 250 251 int dpaa2_eth_dl_traps_register(struct dpaa2_eth_priv *priv) 252 { 253 struct dpaa2_eth_trap_data *dpaa2_eth_trap_data; 254 struct net_device *net_dev = priv->net_dev; 255 struct device *dev = net_dev->dev.parent; 256 int err; 257 258 dpaa2_eth_trap_data = kzalloc(sizeof(*dpaa2_eth_trap_data), GFP_KERNEL); 259 if (!dpaa2_eth_trap_data) 260 return -ENOMEM; 261 priv->trap_data = dpaa2_eth_trap_data; 262 263 dpaa2_eth_trap_data->trap_items_arr = kcalloc(ARRAY_SIZE(dpaa2_eth_traps_arr), 264 sizeof(struct dpaa2_eth_trap_item), 265 GFP_KERNEL); 266 if (!dpaa2_eth_trap_data->trap_items_arr) { 267 err = -ENOMEM; 268 goto trap_data_free; 269 } 270 271 err = devlink_trap_groups_register(priv->devlink, dpaa2_eth_trap_groups_arr, 272 ARRAY_SIZE(dpaa2_eth_trap_groups_arr)); 273 if (err) { 274 dev_err(dev, "devlink_trap_groups_register() = %d\n", err); 275 goto trap_items_arr_free; 276 } 277 278 err = devlink_traps_register(priv->devlink, dpaa2_eth_traps_arr, 279 ARRAY_SIZE(dpaa2_eth_traps_arr), priv); 280 if (err) { 281 dev_err(dev, "devlink_traps_register() = %d\n", err); 282 goto trap_groups_unregiser; 283 } 284 285 return 0; 286 287 trap_groups_unregiser: 288 devlink_trap_groups_unregister(priv->devlink, dpaa2_eth_trap_groups_arr, 289 ARRAY_SIZE(dpaa2_eth_trap_groups_arr)); 290 trap_items_arr_free: 291 kfree(dpaa2_eth_trap_data->trap_items_arr); 292 trap_data_free: 293 kfree(dpaa2_eth_trap_data); 294 priv->trap_data = NULL; 295 296 return err; 297 } 298 299 void dpaa2_eth_dl_traps_unregister(struct dpaa2_eth_priv *priv) 300 { 301 devlink_traps_unregister(priv->devlink, dpaa2_eth_traps_arr, 302 ARRAY_SIZE(dpaa2_eth_traps_arr)); 303 devlink_trap_groups_unregister(priv->devlink, dpaa2_eth_trap_groups_arr, 304 ARRAY_SIZE(dpaa2_eth_trap_groups_arr)); 305 kfree(priv->trap_data->trap_items_arr); 306 kfree(priv->trap_data); 307 } 308