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