1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */ 3 4 #ifndef __MTK_PPE_H 5 #define __MTK_PPE_H 6 7 #include <linux/kernel.h> 8 #include <linux/bitfield.h> 9 #include <linux/rhashtable.h> 10 11 #define MTK_PPE_ENTRIES_SHIFT 3 12 #define MTK_PPE_ENTRIES (1024 << MTK_PPE_ENTRIES_SHIFT) 13 #define MTK_PPE_HASH_MASK (MTK_PPE_ENTRIES - 1) 14 #define MTK_PPE_WAIT_TIMEOUT_US 1000000 15 16 #define MTK_FOE_IB1_UNBIND_TIMESTAMP GENMASK(7, 0) 17 #define MTK_FOE_IB1_UNBIND_PACKETS GENMASK(23, 8) 18 #define MTK_FOE_IB1_UNBIND_PREBIND BIT(24) 19 20 #define MTK_FOE_IB1_BIND_TIMESTAMP GENMASK(14, 0) 21 #define MTK_FOE_IB1_BIND_KEEPALIVE BIT(15) 22 #define MTK_FOE_IB1_BIND_VLAN_LAYER GENMASK(18, 16) 23 #define MTK_FOE_IB1_BIND_PPPOE BIT(19) 24 #define MTK_FOE_IB1_BIND_VLAN_TAG BIT(20) 25 #define MTK_FOE_IB1_BIND_PKT_SAMPLE BIT(21) 26 #define MTK_FOE_IB1_BIND_CACHE BIT(22) 27 #define MTK_FOE_IB1_BIND_TUNNEL_DECAP BIT(23) 28 #define MTK_FOE_IB1_BIND_TTL BIT(24) 29 30 #define MTK_FOE_IB1_PACKET_TYPE GENMASK(27, 25) 31 #define MTK_FOE_IB1_STATE GENMASK(29, 28) 32 #define MTK_FOE_IB1_UDP BIT(30) 33 #define MTK_FOE_IB1_STATIC BIT(31) 34 35 /* CONFIG_MEDIATEK_NETSYS_V2 */ 36 #define MTK_FOE_IB1_BIND_TIMESTAMP_V2 GENMASK(7, 0) 37 #define MTK_FOE_IB1_BIND_VLAN_LAYER_V2 GENMASK(16, 14) 38 #define MTK_FOE_IB1_BIND_PPPOE_V2 BIT(17) 39 #define MTK_FOE_IB1_BIND_VLAN_TAG_V2 BIT(18) 40 #define MTK_FOE_IB1_BIND_CACHE_V2 BIT(20) 41 #define MTK_FOE_IB1_BIND_TTL_V2 BIT(22) 42 #define MTK_FOE_IB1_PACKET_TYPE_V2 GENMASK(27, 23) 43 44 enum { 45 MTK_PPE_PKT_TYPE_IPV4_HNAPT = 0, 46 MTK_PPE_PKT_TYPE_IPV4_ROUTE = 1, 47 MTK_PPE_PKT_TYPE_BRIDGE = 2, 48 MTK_PPE_PKT_TYPE_IPV4_DSLITE = 3, 49 MTK_PPE_PKT_TYPE_IPV6_ROUTE_3T = 4, 50 MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T = 5, 51 MTK_PPE_PKT_TYPE_IPV6_6RD = 7, 52 }; 53 54 #define MTK_FOE_IB2_QID GENMASK(3, 0) 55 #define MTK_FOE_IB2_PSE_QOS BIT(4) 56 #define MTK_FOE_IB2_DEST_PORT GENMASK(7, 5) 57 #define MTK_FOE_IB2_MULTICAST BIT(8) 58 59 #define MTK_FOE_IB2_WDMA_QID2 GENMASK(13, 12) 60 #define MTK_FOE_IB2_MIB_CNT BIT(15) 61 #define MTK_FOE_IB2_WDMA_DEVIDX BIT(16) 62 #define MTK_FOE_IB2_WDMA_WINFO BIT(17) 63 64 #define MTK_FOE_IB2_PORT_MG GENMASK(17, 12) 65 66 #define MTK_FOE_IB2_RX_IDX GENMASK(18, 17) 67 #define MTK_FOE_IB2_PORT_AG GENMASK(23, 18) 68 69 #define MTK_FOE_IB2_DSCP GENMASK(31, 24) 70 71 /* CONFIG_MEDIATEK_NETSYS_V2 */ 72 #define MTK_FOE_IB2_QID_V2 GENMASK(6, 0) 73 #define MTK_FOE_IB2_PORT_MG_V2 BIT(7) 74 #define MTK_FOE_IB2_PSE_QOS_V2 BIT(8) 75 #define MTK_FOE_IB2_DEST_PORT_V2 GENMASK(12, 9) 76 #define MTK_FOE_IB2_MULTICAST_V2 BIT(13) 77 #define MTK_FOE_IB2_WDMA_WINFO_V2 BIT(19) 78 #define MTK_FOE_IB2_PORT_AG_V2 GENMASK(23, 20) 79 80 #define MTK_FOE_VLAN2_WINFO_BSS GENMASK(5, 0) 81 #define MTK_FOE_VLAN2_WINFO_WCID GENMASK(13, 6) 82 #define MTK_FOE_VLAN2_WINFO_RING GENMASK(15, 14) 83 84 #define MTK_FOE_WINFO_BSS GENMASK(5, 0) 85 #define MTK_FOE_WINFO_WCID GENMASK(15, 6) 86 87 enum { 88 MTK_FOE_STATE_INVALID, 89 MTK_FOE_STATE_UNBIND, 90 MTK_FOE_STATE_BIND, 91 MTK_FOE_STATE_FIN 92 }; 93 94 struct mtk_foe_mac_info { 95 u16 vlan1; 96 u16 etype; 97 98 u32 dest_mac_hi; 99 100 u16 vlan2; 101 u16 dest_mac_lo; 102 103 u32 src_mac_hi; 104 105 u16 pppoe_id; 106 u16 src_mac_lo; 107 108 u16 minfo; 109 u16 winfo; 110 }; 111 112 /* software-only entry type */ 113 struct mtk_foe_bridge { 114 u8 dest_mac[ETH_ALEN]; 115 u8 src_mac[ETH_ALEN]; 116 u16 vlan; 117 118 struct {} key_end; 119 120 u32 ib2; 121 122 struct mtk_foe_mac_info l2; 123 }; 124 125 struct mtk_ipv4_tuple { 126 u32 src_ip; 127 u32 dest_ip; 128 union { 129 struct { 130 u16 dest_port; 131 u16 src_port; 132 }; 133 struct { 134 u8 protocol; 135 u8 _pad[3]; /* fill with 0xa5a5a5 */ 136 }; 137 u32 ports; 138 }; 139 }; 140 141 struct mtk_foe_ipv4 { 142 struct mtk_ipv4_tuple orig; 143 144 u32 ib2; 145 146 struct mtk_ipv4_tuple new; 147 148 u16 timestamp; 149 u16 _rsv0[3]; 150 151 u32 udf_tsid; 152 153 struct mtk_foe_mac_info l2; 154 }; 155 156 struct mtk_foe_ipv4_dslite { 157 struct mtk_ipv4_tuple ip4; 158 159 u32 tunnel_src_ip[4]; 160 u32 tunnel_dest_ip[4]; 161 162 u8 flow_label[3]; 163 u8 priority; 164 165 u32 udf_tsid; 166 167 u32 ib2; 168 169 struct mtk_foe_mac_info l2; 170 }; 171 172 struct mtk_foe_ipv6 { 173 u32 src_ip[4]; 174 u32 dest_ip[4]; 175 176 union { 177 struct { 178 u8 protocol; 179 u8 _pad[3]; /* fill with 0xa5a5a5 */ 180 }; /* 3-tuple */ 181 struct { 182 u16 dest_port; 183 u16 src_port; 184 }; /* 5-tuple */ 185 u32 ports; 186 }; 187 188 u32 _rsv[3]; 189 190 u32 udf; 191 192 u32 ib2; 193 struct mtk_foe_mac_info l2; 194 }; 195 196 struct mtk_foe_ipv6_6rd { 197 u32 src_ip[4]; 198 u32 dest_ip[4]; 199 u16 dest_port; 200 u16 src_port; 201 202 u32 tunnel_src_ip; 203 u32 tunnel_dest_ip; 204 205 u16 hdr_csum; 206 u8 dscp; 207 u8 ttl; 208 209 u8 flag; 210 u8 pad; 211 u8 per_flow_6rd_id; 212 u8 pad2; 213 214 u32 ib2; 215 struct mtk_foe_mac_info l2; 216 }; 217 218 struct mtk_foe_entry { 219 u32 ib1; 220 221 union { 222 struct mtk_foe_bridge bridge; 223 struct mtk_foe_ipv4 ipv4; 224 struct mtk_foe_ipv4_dslite dslite; 225 struct mtk_foe_ipv6 ipv6; 226 struct mtk_foe_ipv6_6rd ipv6_6rd; 227 u32 data[23]; 228 }; 229 }; 230 231 enum { 232 MTK_PPE_CPU_REASON_TTL_EXCEEDED = 0x02, 233 MTK_PPE_CPU_REASON_OPTION_HEADER = 0x03, 234 MTK_PPE_CPU_REASON_NO_FLOW = 0x07, 235 MTK_PPE_CPU_REASON_IPV4_FRAG = 0x08, 236 MTK_PPE_CPU_REASON_IPV4_DSLITE_FRAG = 0x09, 237 MTK_PPE_CPU_REASON_IPV4_DSLITE_NO_TCP_UDP = 0x0a, 238 MTK_PPE_CPU_REASON_IPV6_6RD_NO_TCP_UDP = 0x0b, 239 MTK_PPE_CPU_REASON_TCP_FIN_SYN_RST = 0x0c, 240 MTK_PPE_CPU_REASON_UN_HIT = 0x0d, 241 MTK_PPE_CPU_REASON_HIT_UNBIND = 0x0e, 242 MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED = 0x0f, 243 MTK_PPE_CPU_REASON_HIT_BIND_TCP_FIN = 0x10, 244 MTK_PPE_CPU_REASON_HIT_TTL_1 = 0x11, 245 MTK_PPE_CPU_REASON_HIT_BIND_VLAN_VIOLATION = 0x12, 246 MTK_PPE_CPU_REASON_KEEPALIVE_UC_OLD_HDR = 0x13, 247 MTK_PPE_CPU_REASON_KEEPALIVE_MC_NEW_HDR = 0x14, 248 MTK_PPE_CPU_REASON_KEEPALIVE_DUP_OLD_HDR = 0x15, 249 MTK_PPE_CPU_REASON_HIT_BIND_FORCE_CPU = 0x16, 250 MTK_PPE_CPU_REASON_TUNNEL_OPTION_HEADER = 0x17, 251 MTK_PPE_CPU_REASON_MULTICAST_TO_CPU = 0x18, 252 MTK_PPE_CPU_REASON_MULTICAST_TO_GMAC1_CPU = 0x19, 253 MTK_PPE_CPU_REASON_HIT_PRE_BIND = 0x1a, 254 MTK_PPE_CPU_REASON_PACKET_SAMPLING = 0x1b, 255 MTK_PPE_CPU_REASON_EXCEED_MTU = 0x1c, 256 MTK_PPE_CPU_REASON_PPE_BYPASS = 0x1e, 257 MTK_PPE_CPU_REASON_INVALID = 0x1f, 258 }; 259 260 enum { 261 MTK_FLOW_TYPE_L4, 262 MTK_FLOW_TYPE_L2, 263 MTK_FLOW_TYPE_L2_SUBFLOW, 264 }; 265 266 struct mtk_flow_entry { 267 union { 268 struct hlist_node list; 269 struct { 270 struct rhash_head l2_node; 271 struct hlist_head l2_flows; 272 }; 273 }; 274 u8 type; 275 s8 wed_index; 276 u8 ppe_index; 277 u16 hash; 278 union { 279 struct mtk_foe_entry data; 280 struct { 281 struct mtk_flow_entry *base_flow; 282 struct hlist_node list; 283 } l2_data; 284 }; 285 struct rhash_head node; 286 unsigned long cookie; 287 }; 288 289 struct mtk_mib_entry { 290 u32 byt_cnt_l; 291 u16 byt_cnt_h; 292 u32 pkt_cnt_l; 293 u8 pkt_cnt_h; 294 u8 _rsv0; 295 u32 _rsv1; 296 } __packed; 297 298 struct mtk_foe_accounting { 299 u64 bytes; 300 u64 packets; 301 }; 302 303 struct mtk_ppe { 304 struct mtk_eth *eth; 305 struct device *dev; 306 void __iomem *base; 307 int version; 308 char dirname[5]; 309 bool accounting; 310 311 void *foe_table; 312 dma_addr_t foe_phys; 313 314 struct mtk_mib_entry *mib_table; 315 dma_addr_t mib_phys; 316 317 u16 foe_check_time[MTK_PPE_ENTRIES]; 318 struct hlist_head *foe_flow; 319 320 struct rhashtable l2_flows; 321 322 void *acct_table; 323 }; 324 325 struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base, int index); 326 327 void mtk_ppe_deinit(struct mtk_eth *eth); 328 void mtk_ppe_start(struct mtk_ppe *ppe); 329 int mtk_ppe_stop(struct mtk_ppe *ppe); 330 int mtk_ppe_prepare_reset(struct mtk_ppe *ppe); 331 332 void __mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash); 333 334 static inline void 335 mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash) 336 { 337 u16 now, diff; 338 339 if (!ppe) 340 return; 341 342 if (hash > MTK_PPE_HASH_MASK) 343 return; 344 345 now = (u16)jiffies; 346 diff = now - ppe->foe_check_time[hash]; 347 if (diff < HZ / 10) 348 return; 349 350 ppe->foe_check_time[hash] = now; 351 __mtk_ppe_check_skb(ppe, skb, hash); 352 } 353 354 int mtk_foe_entry_prepare(struct mtk_eth *eth, struct mtk_foe_entry *entry, 355 int type, int l4proto, u8 pse_port, u8 *src_mac, 356 u8 *dest_mac); 357 int mtk_foe_entry_set_pse_port(struct mtk_eth *eth, 358 struct mtk_foe_entry *entry, u8 port); 359 int mtk_foe_entry_set_ipv4_tuple(struct mtk_eth *eth, 360 struct mtk_foe_entry *entry, bool orig, 361 __be32 src_addr, __be16 src_port, 362 __be32 dest_addr, __be16 dest_port); 363 int mtk_foe_entry_set_ipv6_tuple(struct mtk_eth *eth, 364 struct mtk_foe_entry *entry, 365 __be32 *src_addr, __be16 src_port, 366 __be32 *dest_addr, __be16 dest_port); 367 int mtk_foe_entry_set_dsa(struct mtk_eth *eth, struct mtk_foe_entry *entry, 368 int port); 369 int mtk_foe_entry_set_vlan(struct mtk_eth *eth, struct mtk_foe_entry *entry, 370 int vid); 371 int mtk_foe_entry_set_pppoe(struct mtk_eth *eth, struct mtk_foe_entry *entry, 372 int sid); 373 int mtk_foe_entry_set_wdma(struct mtk_eth *eth, struct mtk_foe_entry *entry, 374 int wdma_idx, int txq, int bss, int wcid); 375 int mtk_foe_entry_set_queue(struct mtk_eth *eth, struct mtk_foe_entry *entry, 376 unsigned int queue); 377 int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry); 378 void mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry); 379 int mtk_foe_entry_idle_time(struct mtk_ppe *ppe, struct mtk_flow_entry *entry); 380 int mtk_ppe_debugfs_init(struct mtk_ppe *ppe, int index); 381 struct mtk_foe_accounting *mtk_foe_entry_get_mib(struct mtk_ppe *ppe, u32 index, 382 struct mtk_foe_accounting *diff); 383 384 #endif 385