developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1 | /* This program is free software; you can redistribute it and/or modify |
| 2 | * it under the terms of the GNU General Public License as published by |
| 3 | * the Free Software Foundation; version 2 of the License |
| 4 | * |
| 5 | * This program is distributed in the hope that it will be useful, |
| 6 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 7 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 8 | * GNU General Public License for more details. |
| 9 | * |
| 10 | * Copyright (C) 2014-2016 Sean Wang <sean.wang@mediatek.com> |
| 11 | * Copyright (C) 2016-2017 John Crispin <blogic@openwrt.org> |
| 12 | */ |
| 13 | |
| 14 | #include <linux/netfilter_bridge.h> |
| 15 | #include <linux/netfilter_ipv6.h> |
| 16 | |
| 17 | #include <net/arp.h> |
| 18 | #include <net/neighbour.h> |
| 19 | #include <net/netfilter/nf_conntrack_helper.h> |
| 20 | #include <net/netfilter/nf_flow_table.h> |
| 21 | #include <net/ipv6.h> |
| 22 | #include <net/ip6_route.h> |
| 23 | #include <net/ip.h> |
| 24 | #include <net/tcp.h> |
| 25 | #include <net/udp.h> |
developer | 30a4768 | 2021-11-02 17:06:14 +0800 | [diff] [blame] | 26 | #include <net/netfilter/nf_conntrack.h> |
| 27 | #include <net/netfilter/nf_conntrack_acct.h> |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 28 | |
| 29 | #include "nf_hnat_mtk.h" |
| 30 | #include "hnat.h" |
| 31 | |
| 32 | #include "../mtk_eth_soc.h" |
| 33 | |
| 34 | #define do_ge2ext_fast(dev, skb) \ |
| 35 | ((IS_LAN(dev) || IS_WAN(dev) || IS_PPD(dev)) && \ |
| 36 | skb_hnat_is_hashed(skb) && \ |
| 37 | skb_hnat_reason(skb) == HIT_BIND_FORCE_TO_CPU) |
| 38 | #define do_ext2ge_fast_learn(dev, skb) \ |
| 39 | (IS_PPD(dev) && \ |
| 40 | (skb_hnat_sport(skb) == NR_PDMA_PORT || \ |
| 41 | skb_hnat_sport(skb) == NR_QDMA_PORT) && \ |
| 42 | ((get_dev_from_index(skb->vlan_tci & VLAN_VID_MASK)) || \ |
| 43 | get_wandev_from_index(skb->vlan_tci & VLAN_VID_MASK))) |
| 44 | #define do_mape_w2l_fast(dev, skb) \ |
| 45 | (mape_toggle && IS_WAN(dev) && (!is_from_mape(skb))) |
| 46 | |
| 47 | static struct ipv6hdr mape_l2w_v6h; |
| 48 | static struct ipv6hdr mape_w2l_v6h; |
| 49 | static inline uint8_t get_wifi_hook_if_index_from_dev(const struct net_device *dev) |
| 50 | { |
| 51 | int i; |
| 52 | |
| 53 | for (i = 1; i < MAX_IF_NUM; i++) { |
| 54 | if (hnat_priv->wifi_hook_if[i] == dev) |
| 55 | return i; |
| 56 | } |
| 57 | |
| 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | static inline int get_ext_device_number(void) |
| 62 | { |
| 63 | int i, number = 0; |
| 64 | |
| 65 | for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) |
| 66 | number += 1; |
| 67 | return number; |
| 68 | } |
| 69 | |
| 70 | static inline int find_extif_from_devname(const char *name) |
| 71 | { |
| 72 | int i; |
| 73 | struct extdev_entry *ext_entry; |
| 74 | |
| 75 | for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) { |
| 76 | ext_entry = hnat_priv->ext_if[i]; |
| 77 | if (!strcmp(name, ext_entry->name)) |
| 78 | return 1; |
| 79 | } |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | static inline int get_index_from_dev(const struct net_device *dev) |
| 84 | { |
| 85 | int i; |
| 86 | struct extdev_entry *ext_entry; |
| 87 | |
| 88 | for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) { |
| 89 | ext_entry = hnat_priv->ext_if[i]; |
| 90 | if (dev == ext_entry->dev) |
| 91 | return ext_entry->dev->ifindex; |
| 92 | } |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | static inline struct net_device *get_dev_from_index(int index) |
| 97 | { |
| 98 | int i; |
| 99 | struct extdev_entry *ext_entry; |
| 100 | struct net_device *dev = 0; |
| 101 | |
| 102 | for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) { |
| 103 | ext_entry = hnat_priv->ext_if[i]; |
| 104 | if (ext_entry->dev && index == ext_entry->dev->ifindex) { |
| 105 | dev = ext_entry->dev; |
| 106 | break; |
| 107 | } |
| 108 | } |
| 109 | return dev; |
| 110 | } |
| 111 | |
| 112 | static inline struct net_device *get_wandev_from_index(int index) |
| 113 | { |
developer | 8c9c0d0 | 2021-06-18 16:15:37 +0800 | [diff] [blame] | 114 | if (!hnat_priv->g_wandev) |
| 115 | hnat_priv->g_wandev = dev_get_by_name(&init_net, hnat_priv->wan); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 116 | |
developer | 8c9c0d0 | 2021-06-18 16:15:37 +0800 | [diff] [blame] | 117 | if (hnat_priv->g_wandev && hnat_priv->g_wandev->ifindex == index) |
| 118 | return hnat_priv->g_wandev; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 119 | return NULL; |
| 120 | } |
| 121 | |
| 122 | static inline int extif_set_dev(struct net_device *dev) |
| 123 | { |
| 124 | int i; |
| 125 | struct extdev_entry *ext_entry; |
| 126 | |
| 127 | for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) { |
| 128 | ext_entry = hnat_priv->ext_if[i]; |
| 129 | if (!strcmp(dev->name, ext_entry->name) && !ext_entry->dev) { |
| 130 | dev_hold(dev); |
| 131 | ext_entry->dev = dev; |
| 132 | pr_info("%s(%s)\n", __func__, dev->name); |
| 133 | |
| 134 | return ext_entry->dev->ifindex; |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | return -1; |
| 139 | } |
| 140 | |
| 141 | static inline int extif_put_dev(struct net_device *dev) |
| 142 | { |
| 143 | int i; |
| 144 | struct extdev_entry *ext_entry; |
| 145 | |
| 146 | for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) { |
| 147 | ext_entry = hnat_priv->ext_if[i]; |
| 148 | if (ext_entry->dev == dev) { |
| 149 | ext_entry->dev = NULL; |
| 150 | dev_put(dev); |
| 151 | pr_info("%s(%s)\n", __func__, dev->name); |
| 152 | |
developer | bc53e5f | 2021-05-21 10:07:17 +0800 | [diff] [blame] | 153 | return 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 154 | } |
| 155 | } |
| 156 | |
| 157 | return -1; |
| 158 | } |
| 159 | |
| 160 | int ext_if_add(struct extdev_entry *ext_entry) |
| 161 | { |
| 162 | int len = get_ext_device_number(); |
| 163 | |
developer | 4c32b7a | 2021-11-13 16:46:43 +0800 | [diff] [blame] | 164 | if (len < MAX_EXT_DEVS) |
| 165 | hnat_priv->ext_if[len++] = ext_entry; |
| 166 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 167 | return len; |
| 168 | } |
| 169 | |
| 170 | int ext_if_del(struct extdev_entry *ext_entry) |
| 171 | { |
| 172 | int i, j; |
| 173 | |
| 174 | for (i = 0; i < MAX_EXT_DEVS; i++) { |
| 175 | if (hnat_priv->ext_if[i] == ext_entry) { |
| 176 | for (j = i; hnat_priv->ext_if[j] && j < MAX_EXT_DEVS - 1; j++) |
| 177 | hnat_priv->ext_if[j] = hnat_priv->ext_if[j + 1]; |
| 178 | hnat_priv->ext_if[j] = NULL; |
| 179 | break; |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | return i; |
| 184 | } |
| 185 | |
| 186 | void foe_clear_all_bind_entries(struct net_device *dev) |
| 187 | { |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 188 | int i, hash_index; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 189 | struct foe_entry *entry; |
| 190 | |
| 191 | if (!IS_LAN(dev) && !IS_WAN(dev) && |
| 192 | !find_extif_from_devname(dev->name) && |
| 193 | !dev->netdev_ops->ndo_flow_offload_check) |
| 194 | return; |
| 195 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 196 | for (i = 0; i < CFG_PPE_NUM; i++) { |
| 197 | cr_set_field(hnat_priv->ppe_base[i] + PPE_TB_CFG, |
| 198 | SMA, SMA_ONLY_FWD_CPU); |
| 199 | |
| 200 | for (hash_index = 0; hash_index < hnat_priv->foe_etry_num; hash_index++) { |
| 201 | entry = hnat_priv->foe_table_cpu[i] + hash_index; |
| 202 | if (entry->bfib1.state == BIND) { |
| 203 | entry->ipv4_hnapt.udib1.state = INVALID; |
| 204 | entry->ipv4_hnapt.udib1.time_stamp = |
| 205 | readl((hnat_priv->fe_base + 0x0010)) & 0xFF; |
| 206 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 207 | } |
| 208 | } |
| 209 | |
| 210 | /* clear HWNAT cache */ |
| 211 | hnat_cache_ebl(1); |
| 212 | |
| 213 | mod_timer(&hnat_priv->hnat_sma_build_entry_timer, jiffies + 3 * HZ); |
| 214 | } |
| 215 | |
| 216 | static void gmac_ppe_fwd_enable(struct net_device *dev) |
| 217 | { |
| 218 | if (IS_LAN(dev) || IS_GMAC1_MODE) |
| 219 | set_gmac_ppe_fwd(0, 1); |
| 220 | else if (IS_WAN(dev)) |
| 221 | set_gmac_ppe_fwd(1, 1); |
| 222 | } |
| 223 | |
| 224 | int nf_hnat_netdevice_event(struct notifier_block *unused, unsigned long event, |
| 225 | void *ptr) |
| 226 | { |
| 227 | struct net_device *dev; |
| 228 | |
| 229 | dev = netdev_notifier_info_to_dev(ptr); |
| 230 | |
| 231 | switch (event) { |
| 232 | case NETDEV_UP: |
| 233 | gmac_ppe_fwd_enable(dev); |
| 234 | |
| 235 | extif_set_dev(dev); |
| 236 | |
| 237 | break; |
| 238 | case NETDEV_GOING_DOWN: |
| 239 | if (!get_wifi_hook_if_index_from_dev(dev)) |
| 240 | extif_put_dev(dev); |
| 241 | |
| 242 | foe_clear_all_bind_entries(dev); |
| 243 | |
| 244 | break; |
developer | 8c9c0d0 | 2021-06-18 16:15:37 +0800 | [diff] [blame] | 245 | case NETDEV_UNREGISTER: |
| 246 | if (IS_PPD(dev) && hnat_priv->g_ppdev) { |
| 247 | hnat_priv->g_ppdev = NULL; |
| 248 | dev_put(dev); |
| 249 | } |
| 250 | if (IS_WAN(dev) && hnat_priv->g_wandev) { |
| 251 | hnat_priv->g_wandev = NULL; |
| 252 | dev_put(dev); |
| 253 | } |
| 254 | |
| 255 | break; |
| 256 | case NETDEV_REGISTER: |
| 257 | if (IS_PPD(dev) && !hnat_priv->g_ppdev) |
| 258 | hnat_priv->g_ppdev = dev_get_by_name(&init_net, hnat_priv->ppd); |
| 259 | if (IS_WAN(dev) && !hnat_priv->g_wandev) |
| 260 | hnat_priv->g_wandev = dev_get_by_name(&init_net, hnat_priv->wan); |
| 261 | |
| 262 | break; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 263 | default: |
| 264 | break; |
| 265 | } |
| 266 | |
| 267 | return NOTIFY_DONE; |
| 268 | } |
| 269 | |
| 270 | void foe_clear_entry(struct neighbour *neigh) |
| 271 | { |
| 272 | u32 *daddr = (u32 *)neigh->primary_key; |
| 273 | unsigned char h_dest[ETH_ALEN]; |
| 274 | struct foe_entry *entry; |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 275 | int i, hash_index; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 276 | u32 dip; |
| 277 | |
| 278 | dip = (u32)(*daddr); |
| 279 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 280 | for (i = 0; i < CFG_PPE_NUM; i++) { |
| 281 | for (hash_index = 0; hash_index < hnat_priv->foe_etry_num; hash_index++) { |
| 282 | entry = hnat_priv->foe_table_cpu[i] + hash_index; |
| 283 | if (entry->bfib1.state == BIND && |
| 284 | entry->ipv4_hnapt.new_dip == ntohl(dip)) { |
| 285 | *((u32 *)h_dest) = swab32(entry->ipv4_hnapt.dmac_hi); |
| 286 | *((u16 *)&h_dest[4]) = |
| 287 | swab16(entry->ipv4_hnapt.dmac_lo); |
| 288 | if (strncmp(h_dest, neigh->ha, ETH_ALEN) != 0) { |
| 289 | pr_info("%s: state=%d\n", __func__, |
| 290 | neigh->nud_state); |
| 291 | cr_set_field(hnat_priv->ppe_base[i] + PPE_TB_CFG, |
| 292 | SMA, SMA_ONLY_FWD_CPU); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 293 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 294 | entry->ipv4_hnapt.udib1.state = INVALID; |
| 295 | entry->ipv4_hnapt.udib1.time_stamp = |
| 296 | readl((hnat_priv->fe_base + 0x0010)) & 0xFF; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 297 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 298 | /* clear HWNAT cache */ |
| 299 | hnat_cache_ebl(1); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 300 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 301 | mod_timer(&hnat_priv->hnat_sma_build_entry_timer, |
| 302 | jiffies + 3 * HZ); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 303 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 304 | pr_info("Delete old entry: dip =%pI4\n", &dip); |
| 305 | pr_info("Old mac= %pM\n", h_dest); |
| 306 | pr_info("New mac= %pM\n", neigh->ha); |
| 307 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 308 | } |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | int nf_hnat_netevent_handler(struct notifier_block *unused, unsigned long event, |
| 314 | void *ptr) |
| 315 | { |
| 316 | struct net_device *dev = NULL; |
| 317 | struct neighbour *neigh = NULL; |
| 318 | |
| 319 | switch (event) { |
| 320 | case NETEVENT_NEIGH_UPDATE: |
| 321 | neigh = ptr; |
| 322 | dev = neigh->dev; |
| 323 | if (dev) |
| 324 | foe_clear_entry(neigh); |
| 325 | break; |
| 326 | } |
| 327 | |
| 328 | return NOTIFY_DONE; |
| 329 | } |
| 330 | |
| 331 | unsigned int mape_add_ipv6_hdr(struct sk_buff *skb, struct ipv6hdr mape_ip6h) |
| 332 | { |
| 333 | struct ethhdr *eth = NULL; |
| 334 | struct ipv6hdr *ip6h = NULL; |
| 335 | struct iphdr *iph = NULL; |
| 336 | |
| 337 | if (skb_headroom(skb) < IPV6_HDR_LEN || skb_shared(skb) || |
| 338 | (skb_cloned(skb) && !skb_clone_writable(skb, 0))) { |
| 339 | return -1; |
| 340 | } |
| 341 | |
| 342 | /* point to L3 */ |
| 343 | memcpy(skb->data - IPV6_HDR_LEN - ETH_HLEN, skb_push(skb, ETH_HLEN), ETH_HLEN); |
| 344 | memcpy(skb_push(skb, IPV6_HDR_LEN - ETH_HLEN), &mape_ip6h, IPV6_HDR_LEN); |
| 345 | |
| 346 | eth = (struct ethhdr *)(skb->data - ETH_HLEN); |
| 347 | eth->h_proto = htons(ETH_P_IPV6); |
| 348 | skb->protocol = htons(ETH_P_IPV6); |
| 349 | |
| 350 | iph = (struct iphdr *)(skb->data + IPV6_HDR_LEN); |
| 351 | ip6h = (struct ipv6hdr *)(skb->data); |
| 352 | ip6h->payload_len = iph->tot_len; /* maybe different with ipv4 */ |
| 353 | |
| 354 | skb_set_network_header(skb, 0); |
| 355 | skb_set_transport_header(skb, iph->ihl * 4 + IPV6_HDR_LEN); |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | static void fix_skb_packet_type(struct sk_buff *skb, struct net_device *dev, |
| 360 | struct ethhdr *eth) |
| 361 | { |
| 362 | skb->pkt_type = PACKET_HOST; |
| 363 | if (unlikely(is_multicast_ether_addr(eth->h_dest))) { |
| 364 | if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) |
| 365 | skb->pkt_type = PACKET_BROADCAST; |
| 366 | else |
| 367 | skb->pkt_type = PACKET_MULTICAST; |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | unsigned int do_hnat_ext_to_ge(struct sk_buff *skb, const struct net_device *in, |
| 372 | const char *func) |
| 373 | { |
| 374 | if (hnat_priv->g_ppdev && hnat_priv->g_ppdev->flags & IFF_UP) { |
| 375 | u16 vlan_id = 0; |
| 376 | skb_set_network_header(skb, 0); |
| 377 | skb_push(skb, ETH_HLEN); |
| 378 | set_to_ppe(skb); |
| 379 | |
| 380 | vlan_id = skb_vlan_tag_get_id(skb); |
| 381 | if (vlan_id) { |
| 382 | skb = vlan_insert_tag(skb, skb->vlan_proto, skb->vlan_tci); |
| 383 | if (!skb) |
| 384 | return -1; |
| 385 | } |
| 386 | |
| 387 | /*set where we come from*/ |
| 388 | skb->vlan_proto = htons(ETH_P_8021Q); |
| 389 | skb->vlan_tci = |
| 390 | (VLAN_CFI_MASK | (in->ifindex & VLAN_VID_MASK)); |
| 391 | trace_printk( |
| 392 | "%s: vlan_prot=0x%x, vlan_tci=%x, in->name=%s, skb->dev->name=%s\n", |
| 393 | __func__, ntohs(skb->vlan_proto), skb->vlan_tci, |
| 394 | in->name, hnat_priv->g_ppdev->name); |
| 395 | skb->dev = hnat_priv->g_ppdev; |
| 396 | dev_queue_xmit(skb); |
| 397 | trace_printk("%s: called from %s successfully\n", __func__, func); |
| 398 | return 0; |
| 399 | } |
| 400 | |
| 401 | trace_printk("%s: called from %s fail\n", __func__, func); |
| 402 | return -1; |
| 403 | } |
| 404 | |
| 405 | unsigned int do_hnat_ext_to_ge2(struct sk_buff *skb, const char *func) |
| 406 | { |
| 407 | struct ethhdr *eth = eth_hdr(skb); |
| 408 | struct net_device *dev; |
| 409 | struct foe_entry *entry; |
| 410 | |
| 411 | trace_printk("%s: vlan_prot=0x%x, vlan_tci=%x\n", __func__, |
| 412 | ntohs(skb->vlan_proto), skb->vlan_tci); |
| 413 | |
| 414 | dev = get_dev_from_index(skb->vlan_tci & VLAN_VID_MASK); |
| 415 | |
| 416 | if (dev) { |
| 417 | /*set where we to go*/ |
| 418 | skb->dev = dev; |
| 419 | skb->vlan_proto = 0; |
| 420 | skb->vlan_tci = 0; |
| 421 | |
| 422 | if (ntohs(eth->h_proto) == ETH_P_8021Q) { |
| 423 | skb = skb_vlan_untag(skb); |
| 424 | if (unlikely(!skb)) |
| 425 | return -1; |
| 426 | } |
| 427 | |
| 428 | if (IS_BOND_MODE && |
| 429 | (((hnat_priv->data->version == MTK_HNAT_V4) && |
| 430 | (skb_hnat_entry(skb) != 0x7fff)) || |
| 431 | ((hnat_priv->data->version != MTK_HNAT_V4) && |
| 432 | (skb_hnat_entry(skb) != 0x3fff)))) |
| 433 | skb_set_hash(skb, skb_hnat_entry(skb) >> 1, PKT_HASH_TYPE_L4); |
| 434 | |
| 435 | set_from_extge(skb); |
| 436 | fix_skb_packet_type(skb, skb->dev, eth); |
| 437 | netif_rx(skb); |
| 438 | trace_printk("%s: called from %s successfully\n", __func__, |
| 439 | func); |
| 440 | return 0; |
| 441 | } else { |
| 442 | /* MapE WAN --> LAN/WLAN PingPong. */ |
| 443 | dev = get_wandev_from_index(skb->vlan_tci & VLAN_VID_MASK); |
| 444 | if (mape_toggle && dev) { |
| 445 | if (!mape_add_ipv6_hdr(skb, mape_w2l_v6h)) { |
| 446 | skb_set_mac_header(skb, -ETH_HLEN); |
| 447 | skb->dev = dev; |
| 448 | set_from_mape(skb); |
| 449 | skb->vlan_proto = 0; |
| 450 | skb->vlan_tci = 0; |
| 451 | fix_skb_packet_type(skb, skb->dev, eth_hdr(skb)); |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 452 | entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)]; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 453 | entry->bfib1.pkt_type = IPV4_HNAPT; |
| 454 | netif_rx(skb); |
| 455 | return 0; |
| 456 | } |
| 457 | } |
| 458 | trace_printk("%s: called from %s fail\n", __func__, func); |
| 459 | return -1; |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | unsigned int do_hnat_ge_to_ext(struct sk_buff *skb, const char *func) |
| 464 | { |
| 465 | /*set where we to go*/ |
| 466 | u8 index; |
| 467 | struct foe_entry *entry; |
| 468 | struct net_device *dev; |
| 469 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 470 | entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)]; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 471 | |
| 472 | if (IS_IPV4_GRP(entry)) |
| 473 | index = entry->ipv4_hnapt.act_dp; |
| 474 | else |
| 475 | index = entry->ipv6_5t_route.act_dp; |
| 476 | |
| 477 | skb->dev = get_dev_from_index(index); |
| 478 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 479 | if (qos_toggle && eth_hdr(skb)->h_proto == HQOS_MAGIC_TAG) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 480 | skb = skb_unshare(skb, GFP_ATOMIC); |
| 481 | if (!skb) |
| 482 | return NF_ACCEPT; |
| 483 | |
| 484 | if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) |
| 485 | return NF_ACCEPT; |
| 486 | |
| 487 | skb_pull_rcsum(skb, VLAN_HLEN); |
| 488 | |
| 489 | memmove(skb->data - ETH_HLEN, skb->data - ETH_HLEN - VLAN_HLEN, |
| 490 | 2 * ETH_ALEN); |
| 491 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 492 | |
| 493 | if (skb->dev) { |
| 494 | skb_set_network_header(skb, 0); |
| 495 | skb_push(skb, ETH_HLEN); |
| 496 | dev_queue_xmit(skb); |
| 497 | trace_printk("%s: called from %s successfully\n", __func__, |
| 498 | func); |
| 499 | return 0; |
| 500 | } else { |
| 501 | if (mape_toggle) { |
| 502 | /* Add ipv6 header mape for lan/wlan -->wan */ |
| 503 | dev = get_wandev_from_index(index); |
| 504 | if (dev) { |
| 505 | if (!mape_add_ipv6_hdr(skb, mape_l2w_v6h)) { |
| 506 | skb_set_network_header(skb, 0); |
| 507 | skb_push(skb, ETH_HLEN); |
| 508 | skb_set_mac_header(skb, 0); |
| 509 | skb->dev = dev; |
| 510 | dev_queue_xmit(skb); |
| 511 | return 0; |
| 512 | } |
| 513 | trace_printk("%s: called from %s fail[MapE]\n", __func__, |
| 514 | func); |
| 515 | return -1; |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | /*if external devices is down, invalidate related ppe entry*/ |
| 520 | if (entry_hnat_is_bound(entry)) { |
| 521 | entry->bfib1.state = INVALID; |
| 522 | if (IS_IPV4_GRP(entry)) |
| 523 | entry->ipv4_hnapt.act_dp = 0; |
| 524 | else |
| 525 | entry->ipv6_5t_route.act_dp = 0; |
| 526 | |
| 527 | /* clear HWNAT cache */ |
| 528 | hnat_cache_ebl(1); |
| 529 | } |
| 530 | trace_printk("%s: called from %s fail, index=%x\n", __func__, |
| 531 | func, index); |
| 532 | return -1; |
| 533 | } |
| 534 | |
| 535 | static void pre_routing_print(struct sk_buff *skb, const struct net_device *in, |
| 536 | const struct net_device *out, const char *func) |
| 537 | { |
| 538 | trace_printk( |
| 539 | "[%s]: %s(iif=0x%x CB2=0x%x)-->%s (ppe_hash=0x%x) sport=0x%x reason=0x%x alg=0x%x from %s\n", |
| 540 | __func__, in->name, skb_hnat_iface(skb), |
| 541 | HNAT_SKB_CB2(skb)->magic, out->name, skb_hnat_entry(skb), |
| 542 | skb_hnat_sport(skb), skb_hnat_reason(skb), skb_hnat_alg(skb), |
| 543 | func); |
| 544 | } |
| 545 | |
| 546 | static void post_routing_print(struct sk_buff *skb, const struct net_device *in, |
| 547 | const struct net_device *out, const char *func) |
| 548 | { |
| 549 | trace_printk( |
| 550 | "[%s]: %s(iif=0x%x, CB2=0x%x)-->%s (ppe_hash=0x%x) sport=0x%x reason=0x%x alg=0x%x from %s\n", |
| 551 | __func__, in->name, skb_hnat_iface(skb), |
| 552 | HNAT_SKB_CB2(skb)->magic, out->name, skb_hnat_entry(skb), |
| 553 | skb_hnat_sport(skb), skb_hnat_reason(skb), skb_hnat_alg(skb), |
| 554 | func); |
| 555 | } |
| 556 | |
| 557 | static inline void hnat_set_iif(const struct nf_hook_state *state, |
| 558 | struct sk_buff *skb, int val) |
| 559 | { |
developer | 4001797 | 2021-06-29 14:27:35 +0800 | [diff] [blame] | 560 | if (IS_WHNAT(state->in) && FROM_WED(skb)) { |
developer | e567ad3 | 2021-05-25 17:16:17 +0800 | [diff] [blame] | 561 | return; |
| 562 | } else if (IS_LAN(state->in)) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 563 | skb_hnat_iface(skb) = FOE_MAGIC_GE_LAN; |
| 564 | } else if (IS_PPD(state->in)) { |
| 565 | skb_hnat_iface(skb) = FOE_MAGIC_GE_PPD; |
| 566 | } else if (IS_EXT(state->in)) { |
| 567 | skb_hnat_iface(skb) = FOE_MAGIC_EXT; |
| 568 | } else if (IS_WAN(state->in)) { |
| 569 | skb_hnat_iface(skb) = FOE_MAGIC_GE_WAN; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 570 | } else if (!IS_BR(state->in)) { |
developer | 99506e5 | 2021-06-30 22:03:02 +0800 | [diff] [blame] | 571 | if (state->in->netdev_ops->ndo_flow_offload_check) { |
| 572 | skb_hnat_iface(skb) = FOE_MAGIC_GE_VIRTUAL; |
| 573 | } else { |
| 574 | skb_hnat_iface(skb) = FOE_INVALID; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 575 | |
developer | 99506e5 | 2021-06-30 22:03:02 +0800 | [diff] [blame] | 576 | if (is_magic_tag_valid(skb) && |
| 577 | IS_SPACE_AVAILABLE_HEAD(skb)) |
| 578 | memset(skb_hnat_info(skb), 0, FOE_INFO_LEN); |
| 579 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 580 | } |
| 581 | } |
| 582 | |
| 583 | static inline void hnat_set_alg(const struct nf_hook_state *state, |
| 584 | struct sk_buff *skb, int val) |
| 585 | { |
| 586 | skb_hnat_alg(skb) = val; |
| 587 | } |
| 588 | |
| 589 | static inline void hnat_set_head_frags(const struct nf_hook_state *state, |
| 590 | struct sk_buff *head_skb, int val, |
| 591 | void (*fn)(const struct nf_hook_state *state, |
| 592 | struct sk_buff *skb, int val)) |
| 593 | { |
| 594 | struct sk_buff *segs = skb_shinfo(head_skb)->frag_list; |
| 595 | |
| 596 | fn(state, head_skb, val); |
| 597 | while (segs) { |
| 598 | fn(state, segs, val); |
| 599 | segs = segs->next; |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | unsigned int do_hnat_mape_w2l_fast(struct sk_buff *skb, const struct net_device *in, |
| 604 | const char *func) |
| 605 | { |
| 606 | struct ipv6hdr *ip6h = ipv6_hdr(skb); |
| 607 | struct iphdr _iphdr; |
| 608 | struct iphdr *iph; |
| 609 | struct ethhdr *eth; |
| 610 | |
| 611 | /* WAN -> LAN/WLAN MapE. */ |
| 612 | if (mape_toggle && (ip6h->nexthdr == NEXTHDR_IPIP)) { |
| 613 | iph = skb_header_pointer(skb, IPV6_HDR_LEN, sizeof(_iphdr), &_iphdr); |
developer | 4c32b7a | 2021-11-13 16:46:43 +0800 | [diff] [blame] | 614 | if (unlikely(!iph)) |
| 615 | return -1; |
| 616 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 617 | switch (iph->protocol) { |
| 618 | case IPPROTO_UDP: |
| 619 | case IPPROTO_TCP: |
| 620 | break; |
| 621 | default: |
| 622 | return -1; |
| 623 | } |
| 624 | mape_w2l_v6h = *ip6h; |
| 625 | |
| 626 | /* Remove ipv6 header. */ |
| 627 | memcpy(skb->data + IPV6_HDR_LEN - ETH_HLEN, |
| 628 | skb->data - ETH_HLEN, ETH_HLEN); |
| 629 | skb_pull(skb, IPV6_HDR_LEN - ETH_HLEN); |
| 630 | skb_set_mac_header(skb, 0); |
| 631 | skb_set_network_header(skb, ETH_HLEN); |
| 632 | skb_set_transport_header(skb, ETH_HLEN + sizeof(_iphdr)); |
| 633 | |
| 634 | eth = eth_hdr(skb); |
| 635 | eth->h_proto = htons(ETH_P_IP); |
| 636 | set_to_ppe(skb); |
| 637 | |
| 638 | skb->vlan_proto = htons(ETH_P_8021Q); |
| 639 | skb->vlan_tci = |
| 640 | (VLAN_CFI_MASK | (in->ifindex & VLAN_VID_MASK)); |
| 641 | |
| 642 | if (!hnat_priv->g_ppdev) |
| 643 | hnat_priv->g_ppdev = dev_get_by_name(&init_net, hnat_priv->ppd); |
| 644 | |
| 645 | skb->dev = hnat_priv->g_ppdev; |
| 646 | skb->protocol = htons(ETH_P_IP); |
| 647 | |
| 648 | dev_queue_xmit(skb); |
| 649 | |
| 650 | return 0; |
| 651 | } |
| 652 | return -1; |
| 653 | } |
| 654 | |
| 655 | static unsigned int is_ppe_support_type(struct sk_buff *skb) |
| 656 | { |
| 657 | struct ethhdr *eth = NULL; |
| 658 | struct iphdr *iph = NULL; |
| 659 | struct ipv6hdr *ip6h = NULL; |
| 660 | struct iphdr _iphdr; |
| 661 | |
| 662 | eth = eth_hdr(skb); |
developer | fd2d742 | 2021-06-09 17:09:39 +0800 | [diff] [blame] | 663 | if (!is_magic_tag_valid(skb) || !IS_SPACE_AVAILABLE_HEAD(skb) || |
developer | 8116b0a | 2021-08-23 18:07:20 +0800 | [diff] [blame] | 664 | is_multicast_ether_addr(eth->h_dest)) |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 665 | return 0; |
| 666 | |
| 667 | switch (ntohs(skb->protocol)) { |
| 668 | case ETH_P_IP: |
| 669 | iph = ip_hdr(skb); |
| 670 | |
| 671 | /* do not accelerate non tcp/udp traffic */ |
| 672 | if ((iph->protocol == IPPROTO_TCP) || |
| 673 | (iph->protocol == IPPROTO_UDP) || |
| 674 | (iph->protocol == IPPROTO_IPV6)) { |
| 675 | return 1; |
| 676 | } |
| 677 | |
| 678 | break; |
| 679 | case ETH_P_IPV6: |
| 680 | ip6h = ipv6_hdr(skb); |
| 681 | |
| 682 | if ((ip6h->nexthdr == NEXTHDR_TCP) || |
| 683 | (ip6h->nexthdr == NEXTHDR_UDP)) { |
| 684 | return 1; |
| 685 | } else if (ip6h->nexthdr == NEXTHDR_IPIP) { |
| 686 | iph = skb_header_pointer(skb, IPV6_HDR_LEN, |
| 687 | sizeof(_iphdr), &_iphdr); |
developer | 4c32b7a | 2021-11-13 16:46:43 +0800 | [diff] [blame] | 688 | if (unlikely(!iph)) |
| 689 | return 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 690 | |
| 691 | if ((iph->protocol == IPPROTO_TCP) || |
| 692 | (iph->protocol == IPPROTO_UDP)) { |
| 693 | return 1; |
| 694 | } |
| 695 | |
| 696 | } |
| 697 | |
| 698 | break; |
| 699 | case ETH_P_8021Q: |
| 700 | return 1; |
| 701 | } |
| 702 | |
| 703 | return 0; |
| 704 | } |
| 705 | |
| 706 | static unsigned int |
| 707 | mtk_hnat_ipv6_nf_pre_routing(void *priv, struct sk_buff *skb, |
| 708 | const struct nf_hook_state *state) |
| 709 | { |
| 710 | if (!is_ppe_support_type(skb)) { |
| 711 | hnat_set_head_frags(state, skb, 1, hnat_set_alg); |
| 712 | return NF_ACCEPT; |
| 713 | } |
| 714 | |
| 715 | hnat_set_head_frags(state, skb, -1, hnat_set_iif); |
| 716 | |
| 717 | pre_routing_print(skb, state->in, state->out, __func__); |
| 718 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 719 | /* packets from external devices -> xxx ,step 1 , learning stage & bound stage*/ |
| 720 | if (do_ext2ge_fast_try(state->in, skb)) { |
| 721 | if (!do_hnat_ext_to_ge(skb, state->in, __func__)) |
| 722 | return NF_STOLEN; |
| 723 | if (!skb) |
| 724 | goto drop; |
| 725 | return NF_ACCEPT; |
| 726 | } |
| 727 | |
| 728 | /* packets form ge -> external device |
| 729 | * For standalone wan interface |
| 730 | */ |
| 731 | if (do_ge2ext_fast(state->in, skb)) { |
| 732 | if (!do_hnat_ge_to_ext(skb, __func__)) |
| 733 | return NF_STOLEN; |
| 734 | goto drop; |
| 735 | } |
| 736 | |
| 737 | /* MapE need remove ipv6 header and pingpong. */ |
| 738 | if (do_mape_w2l_fast(state->in, skb)) { |
| 739 | if (!do_hnat_mape_w2l_fast(skb, state->in, __func__)) |
| 740 | return NF_STOLEN; |
| 741 | else |
| 742 | return NF_ACCEPT; |
| 743 | } |
| 744 | |
| 745 | if (is_from_mape(skb)) |
| 746 | clr_from_extge(skb); |
| 747 | |
| 748 | return NF_ACCEPT; |
| 749 | drop: |
| 750 | printk_ratelimited(KERN_WARNING |
| 751 | "%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x, sport=0x%x, reason=0x%x, alg=0x%x)\n", |
| 752 | __func__, state->in->name, skb_hnat_iface(skb), |
| 753 | HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb), |
| 754 | skb_hnat_sport(skb), skb_hnat_reason(skb), |
| 755 | skb_hnat_alg(skb)); |
| 756 | |
| 757 | return NF_DROP; |
| 758 | } |
| 759 | |
| 760 | static unsigned int |
| 761 | mtk_hnat_ipv4_nf_pre_routing(void *priv, struct sk_buff *skb, |
| 762 | const struct nf_hook_state *state) |
| 763 | { |
| 764 | if (!is_ppe_support_type(skb)) { |
| 765 | hnat_set_head_frags(state, skb, 1, hnat_set_alg); |
| 766 | return NF_ACCEPT; |
| 767 | } |
| 768 | |
| 769 | hnat_set_head_frags(state, skb, -1, hnat_set_iif); |
| 770 | |
| 771 | pre_routing_print(skb, state->in, state->out, __func__); |
| 772 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 773 | /* packets from external devices -> xxx ,step 1 , learning stage & bound stage*/ |
| 774 | if (do_ext2ge_fast_try(state->in, skb)) { |
| 775 | if (!do_hnat_ext_to_ge(skb, state->in, __func__)) |
| 776 | return NF_STOLEN; |
| 777 | if (!skb) |
| 778 | goto drop; |
| 779 | return NF_ACCEPT; |
| 780 | } |
| 781 | |
| 782 | /* packets form ge -> external device |
| 783 | * For standalone wan interface |
| 784 | */ |
| 785 | if (do_ge2ext_fast(state->in, skb)) { |
| 786 | if (!do_hnat_ge_to_ext(skb, __func__)) |
| 787 | return NF_STOLEN; |
| 788 | goto drop; |
| 789 | } |
| 790 | |
| 791 | return NF_ACCEPT; |
| 792 | drop: |
| 793 | printk_ratelimited(KERN_WARNING |
| 794 | "%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x, sport=0x%x, reason=0x%x, alg=0x%x)\n", |
| 795 | __func__, state->in->name, skb_hnat_iface(skb), |
| 796 | HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb), |
| 797 | skb_hnat_sport(skb), skb_hnat_reason(skb), |
| 798 | skb_hnat_alg(skb)); |
| 799 | |
| 800 | return NF_DROP; |
| 801 | } |
| 802 | |
| 803 | static unsigned int |
| 804 | mtk_hnat_br_nf_local_in(void *priv, struct sk_buff *skb, |
| 805 | const struct nf_hook_state *state) |
| 806 | { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 807 | struct vlan_ethhdr *veth; |
| 808 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 809 | if (qos_toggle && hnat_priv->data->whnat) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 810 | veth = (struct vlan_ethhdr *)skb_mac_header(skb); |
| 811 | |
| 812 | if (eth_hdr(skb)->h_proto == HQOS_MAGIC_TAG) { |
| 813 | skb_hnat_entry(skb) = ntohs(veth->h_vlan_TCI) & 0x3fff; |
| 814 | skb_hnat_reason(skb) = HIT_BIND_FORCE_TO_CPU; |
| 815 | } |
| 816 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 817 | |
| 818 | if (!HAS_HQOS_MAGIC_TAG(skb) && !is_ppe_support_type(skb)) { |
| 819 | hnat_set_head_frags(state, skb, 1, hnat_set_alg); |
| 820 | return NF_ACCEPT; |
| 821 | } |
| 822 | |
| 823 | hnat_set_head_frags(state, skb, -1, hnat_set_iif); |
| 824 | |
| 825 | pre_routing_print(skb, state->in, state->out, __func__); |
| 826 | |
| 827 | if (unlikely(debug_level >= 7)) { |
| 828 | hnat_cpu_reason_cnt(skb); |
| 829 | if (skb_hnat_reason(skb) == dbg_cpu_reason) |
| 830 | foe_dump_pkt(skb); |
| 831 | } |
| 832 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 833 | /* packets from external devices -> xxx ,step 1 , learning stage & bound stage*/ |
| 834 | if ((skb_hnat_iface(skb) == FOE_MAGIC_EXT) && !is_from_extge(skb) && |
| 835 | !is_multicast_ether_addr(eth_hdr(skb)->h_dest)) { |
| 836 | if (!hnat_priv->g_ppdev) |
| 837 | hnat_priv->g_ppdev = dev_get_by_name(&init_net, hnat_priv->ppd); |
| 838 | |
| 839 | if (!do_hnat_ext_to_ge(skb, state->in, __func__)) |
| 840 | return NF_STOLEN; |
| 841 | if (!skb) |
| 842 | goto drop; |
| 843 | return NF_ACCEPT; |
| 844 | } |
| 845 | |
| 846 | if (hnat_priv->data->whnat) { |
| 847 | if (skb_hnat_iface(skb) == FOE_MAGIC_EXT) |
| 848 | clr_from_extge(skb); |
| 849 | |
| 850 | /* packets from external devices -> xxx ,step 2, learning stage */ |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 851 | if (do_ext2ge_fast_learn(state->in, skb) && (!qos_toggle || |
| 852 | (qos_toggle && eth_hdr(skb)->h_proto != HQOS_MAGIC_TAG))) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 853 | if (!do_hnat_ext_to_ge2(skb, __func__)) |
| 854 | return NF_STOLEN; |
| 855 | goto drop; |
| 856 | } |
| 857 | |
| 858 | /* packets form ge -> external device */ |
| 859 | if (do_ge2ext_fast(state->in, skb)) { |
| 860 | if (!do_hnat_ge_to_ext(skb, __func__)) |
| 861 | return NF_STOLEN; |
| 862 | goto drop; |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | /* MapE need remove ipv6 header and pingpong. (bridge mode) */ |
| 867 | if (do_mape_w2l_fast(state->in, skb)) { |
| 868 | if (!do_hnat_mape_w2l_fast(skb, state->in, __func__)) |
| 869 | return NF_STOLEN; |
| 870 | else |
| 871 | return NF_ACCEPT; |
| 872 | } |
| 873 | |
| 874 | return NF_ACCEPT; |
| 875 | drop: |
| 876 | printk_ratelimited(KERN_WARNING |
| 877 | "%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x, sport=0x%x, reason=0x%x, alg=0x%x)\n", |
| 878 | __func__, state->in->name, skb_hnat_iface(skb), |
| 879 | HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb), |
| 880 | skb_hnat_sport(skb), skb_hnat_reason(skb), |
| 881 | skb_hnat_alg(skb)); |
| 882 | |
| 883 | return NF_DROP; |
| 884 | } |
| 885 | |
| 886 | static unsigned int hnat_ipv6_get_nexthop(struct sk_buff *skb, |
| 887 | const struct net_device *out, |
| 888 | struct flow_offload_hw_path *hw_path) |
| 889 | { |
| 890 | const struct in6_addr *ipv6_nexthop; |
| 891 | struct neighbour *neigh = NULL; |
| 892 | struct dst_entry *dst = skb_dst(skb); |
| 893 | struct ethhdr *eth; |
| 894 | |
| 895 | if (hw_path->flags & FLOW_OFFLOAD_PATH_PPPOE) { |
| 896 | memcpy(eth_hdr(skb)->h_source, hw_path->eth_src, ETH_ALEN); |
| 897 | memcpy(eth_hdr(skb)->h_dest, hw_path->eth_dest, ETH_ALEN); |
| 898 | return 0; |
| 899 | } |
| 900 | |
| 901 | rcu_read_lock_bh(); |
| 902 | ipv6_nexthop = |
| 903 | rt6_nexthop((struct rt6_info *)dst, &ipv6_hdr(skb)->daddr); |
| 904 | neigh = __ipv6_neigh_lookup_noref(dst->dev, ipv6_nexthop); |
| 905 | if (unlikely(!neigh)) { |
| 906 | dev_notice(hnat_priv->dev, "%s:No neigh (daddr=%pI6)\n", __func__, |
| 907 | &ipv6_hdr(skb)->daddr); |
| 908 | rcu_read_unlock_bh(); |
| 909 | return -1; |
| 910 | } |
| 911 | |
| 912 | /* why do we get all zero ethernet address ? */ |
| 913 | if (!is_valid_ether_addr(neigh->ha)) { |
| 914 | rcu_read_unlock_bh(); |
| 915 | return -1; |
| 916 | } |
| 917 | |
| 918 | if (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPIP) { |
| 919 | /*copy ether type for DS-Lite and MapE */ |
| 920 | eth = (struct ethhdr *)(skb->data - ETH_HLEN); |
| 921 | eth->h_proto = skb->protocol; |
| 922 | } else { |
| 923 | eth = eth_hdr(skb); |
| 924 | } |
| 925 | |
| 926 | ether_addr_copy(eth->h_dest, neigh->ha); |
| 927 | ether_addr_copy(eth->h_source, out->dev_addr); |
| 928 | |
| 929 | rcu_read_unlock_bh(); |
| 930 | |
| 931 | return 0; |
| 932 | } |
| 933 | |
| 934 | static unsigned int hnat_ipv4_get_nexthop(struct sk_buff *skb, |
| 935 | const struct net_device *out, |
| 936 | struct flow_offload_hw_path *hw_path) |
| 937 | { |
| 938 | u32 nexthop; |
| 939 | struct neighbour *neigh; |
| 940 | struct dst_entry *dst = skb_dst(skb); |
| 941 | struct rtable *rt = (struct rtable *)dst; |
| 942 | struct net_device *dev = (__force struct net_device *)out; |
| 943 | |
| 944 | if (hw_path->flags & FLOW_OFFLOAD_PATH_PPPOE) { |
| 945 | memcpy(eth_hdr(skb)->h_source, hw_path->eth_src, ETH_ALEN); |
| 946 | memcpy(eth_hdr(skb)->h_dest, hw_path->eth_dest, ETH_ALEN); |
| 947 | return 0; |
| 948 | } |
| 949 | |
| 950 | rcu_read_lock_bh(); |
| 951 | nexthop = (__force u32)rt_nexthop(rt, ip_hdr(skb)->daddr); |
| 952 | neigh = __ipv4_neigh_lookup_noref(dev, nexthop); |
| 953 | if (unlikely(!neigh)) { |
| 954 | dev_notice(hnat_priv->dev, "%s:No neigh (daddr=%pI4)\n", __func__, |
| 955 | &ip_hdr(skb)->daddr); |
| 956 | rcu_read_unlock_bh(); |
| 957 | return -1; |
| 958 | } |
| 959 | |
| 960 | /* why do we get all zero ethernet address ? */ |
| 961 | if (!is_valid_ether_addr(neigh->ha)) { |
| 962 | rcu_read_unlock_bh(); |
| 963 | return -1; |
| 964 | } |
| 965 | |
| 966 | memcpy(eth_hdr(skb)->h_dest, neigh->ha, ETH_ALEN); |
| 967 | memcpy(eth_hdr(skb)->h_source, out->dev_addr, ETH_ALEN); |
| 968 | |
| 969 | rcu_read_unlock_bh(); |
| 970 | |
| 971 | return 0; |
| 972 | } |
| 973 | |
| 974 | static u16 ppe_get_chkbase(struct iphdr *iph) |
| 975 | { |
| 976 | u16 org_chksum = ntohs(iph->check); |
| 977 | u16 org_tot_len = ntohs(iph->tot_len); |
| 978 | u16 org_id = ntohs(iph->id); |
| 979 | u16 chksum_tmp, tot_len_tmp, id_tmp; |
| 980 | u32 tmp = 0; |
| 981 | u16 chksum_base = 0; |
| 982 | |
| 983 | chksum_tmp = ~(org_chksum); |
| 984 | tot_len_tmp = ~(org_tot_len); |
| 985 | id_tmp = ~(org_id); |
| 986 | tmp = chksum_tmp + tot_len_tmp + id_tmp; |
| 987 | tmp = ((tmp >> 16) & 0x7) + (tmp & 0xFFFF); |
| 988 | tmp = ((tmp >> 16) & 0x7) + (tmp & 0xFFFF); |
| 989 | chksum_base = tmp & 0xFFFF; |
| 990 | |
| 991 | return chksum_base; |
| 992 | } |
| 993 | |
| 994 | struct foe_entry ppe_fill_L2_info(struct ethhdr *eth, struct foe_entry entry, |
| 995 | struct flow_offload_hw_path *hw_path) |
| 996 | { |
| 997 | switch (entry.bfib1.pkt_type) { |
| 998 | case IPV4_HNAPT: |
| 999 | case IPV4_HNAT: |
| 1000 | entry.ipv4_hnapt.dmac_hi = swab32(*((u32 *)eth->h_dest)); |
| 1001 | entry.ipv4_hnapt.dmac_lo = swab16(*((u16 *)ð->h_dest[4])); |
| 1002 | entry.ipv4_hnapt.smac_hi = swab32(*((u32 *)eth->h_source)); |
| 1003 | entry.ipv4_hnapt.smac_lo = swab16(*((u16 *)ð->h_source[4])); |
| 1004 | entry.ipv4_hnapt.pppoe_id = hw_path->pppoe_sid; |
| 1005 | break; |
| 1006 | case IPV4_DSLITE: |
| 1007 | case IPV4_MAP_E: |
| 1008 | case IPV6_6RD: |
| 1009 | case IPV6_5T_ROUTE: |
| 1010 | case IPV6_3T_ROUTE: |
| 1011 | entry.ipv6_5t_route.dmac_hi = swab32(*((u32 *)eth->h_dest)); |
| 1012 | entry.ipv6_5t_route.dmac_lo = swab16(*((u16 *)ð->h_dest[4])); |
| 1013 | entry.ipv6_5t_route.smac_hi = swab32(*((u32 *)eth->h_source)); |
| 1014 | entry.ipv6_5t_route.smac_lo = |
| 1015 | swab16(*((u16 *)ð->h_source[4])); |
| 1016 | entry.ipv6_5t_route.pppoe_id = hw_path->pppoe_sid; |
| 1017 | break; |
| 1018 | } |
| 1019 | return entry; |
| 1020 | } |
| 1021 | |
| 1022 | struct foe_entry ppe_fill_info_blk(struct ethhdr *eth, struct foe_entry entry, |
| 1023 | struct flow_offload_hw_path *hw_path) |
| 1024 | { |
| 1025 | entry.bfib1.psn = (hw_path->flags & FLOW_OFFLOAD_PATH_PPPOE) ? 1 : 0; |
| 1026 | entry.bfib1.vlan_layer += (hw_path->flags & FLOW_OFFLOAD_PATH_VLAN) ? 1 : 0; |
| 1027 | entry.bfib1.vpm = (entry.bfib1.vlan_layer) ? 1 : 0; |
| 1028 | entry.bfib1.ttl = 1; |
| 1029 | entry.bfib1.cah = 1; |
| 1030 | entry.bfib1.ka = 1; |
| 1031 | entry.bfib1.time_stamp = (hnat_priv->data->version == MTK_HNAT_V4) ? |
| 1032 | readl(hnat_priv->fe_base + 0x0010) & (0xFF) : |
| 1033 | readl(hnat_priv->fe_base + 0x0010) & (0x7FFF); |
| 1034 | |
| 1035 | switch (entry.bfib1.pkt_type) { |
| 1036 | case IPV4_HNAPT: |
| 1037 | case IPV4_HNAT: |
developer | 8116b0a | 2021-08-23 18:07:20 +0800 | [diff] [blame] | 1038 | if (hnat_priv->data->mcast && |
| 1039 | is_multicast_ether_addr(ð->h_dest[0])) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1040 | entry.ipv4_hnapt.iblk2.mcast = 1; |
| 1041 | if (hnat_priv->data->version == MTK_HNAT_V3) { |
| 1042 | entry.bfib1.sta = 1; |
| 1043 | entry.ipv4_hnapt.m_timestamp = foe_timestamp(hnat_priv); |
| 1044 | } |
| 1045 | } else { |
| 1046 | entry.ipv4_hnapt.iblk2.mcast = 0; |
| 1047 | } |
| 1048 | |
| 1049 | entry.ipv4_hnapt.iblk2.port_ag = |
developer | 2494820 | 2021-11-24 17:38:27 +0800 | [diff] [blame^] | 1050 | (hnat_priv->data->version == MTK_HNAT_V4) ? 0xf : 0x3f; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1051 | break; |
| 1052 | case IPV4_DSLITE: |
| 1053 | case IPV4_MAP_E: |
| 1054 | case IPV6_6RD: |
| 1055 | case IPV6_5T_ROUTE: |
| 1056 | case IPV6_3T_ROUTE: |
developer | 8116b0a | 2021-08-23 18:07:20 +0800 | [diff] [blame] | 1057 | if (hnat_priv->data->mcast && |
| 1058 | is_multicast_ether_addr(ð->h_dest[0])) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1059 | entry.ipv6_5t_route.iblk2.mcast = 1; |
| 1060 | if (hnat_priv->data->version == MTK_HNAT_V3) { |
| 1061 | entry.bfib1.sta = 1; |
| 1062 | entry.ipv4_hnapt.m_timestamp = foe_timestamp(hnat_priv); |
| 1063 | } |
| 1064 | } else { |
| 1065 | entry.ipv6_5t_route.iblk2.mcast = 0; |
| 1066 | } |
| 1067 | |
| 1068 | entry.ipv6_5t_route.iblk2.port_ag = |
developer | 2494820 | 2021-11-24 17:38:27 +0800 | [diff] [blame^] | 1069 | (hnat_priv->data->version == MTK_HNAT_V4) ? 0xf : 0x3f; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1070 | break; |
| 1071 | } |
| 1072 | return entry; |
| 1073 | } |
| 1074 | |
| 1075 | static void ppe_fill_flow_lbl(struct foe_entry *entry, struct ipv6hdr *ip6h) |
| 1076 | { |
| 1077 | entry->ipv4_dslite.flow_lbl[0] = ip6h->flow_lbl[2]; |
| 1078 | entry->ipv4_dslite.flow_lbl[1] = ip6h->flow_lbl[1]; |
| 1079 | entry->ipv4_dslite.flow_lbl[2] = ip6h->flow_lbl[0]; |
| 1080 | } |
| 1081 | |
| 1082 | static unsigned int skb_to_hnat_info(struct sk_buff *skb, |
| 1083 | const struct net_device *dev, |
| 1084 | struct foe_entry *foe, |
| 1085 | struct flow_offload_hw_path *hw_path) |
| 1086 | { |
| 1087 | struct foe_entry entry = { 0 }; |
| 1088 | int whnat = IS_WHNAT(dev); |
| 1089 | struct ethhdr *eth; |
| 1090 | struct iphdr *iph; |
| 1091 | struct ipv6hdr *ip6h; |
| 1092 | struct tcpudphdr _ports; |
| 1093 | const struct tcpudphdr *pptr; |
| 1094 | u32 gmac = NR_DISCARD; |
| 1095 | int udp = 0; |
| 1096 | u32 qid = 0; |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1097 | u32 port_id = 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1098 | int mape = 0; |
| 1099 | |
| 1100 | if (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPIP) |
| 1101 | /* point to ethernet header for DS-Lite and MapE */ |
| 1102 | eth = (struct ethhdr *)(skb->data - ETH_HLEN); |
| 1103 | else |
| 1104 | eth = eth_hdr(skb); |
developer | 8116b0a | 2021-08-23 18:07:20 +0800 | [diff] [blame] | 1105 | |
| 1106 | /*do not bind multicast if PPE mcast not enable*/ |
| 1107 | if (!hnat_priv->data->mcast && is_multicast_ether_addr(eth->h_dest)) |
| 1108 | return 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1109 | |
| 1110 | entry.bfib1.pkt_type = foe->udib1.pkt_type; /* Get packte type state*/ |
| 1111 | #if defined(CONFIG_MEDIATEK_NETSYS_V2) |
| 1112 | entry.bfib1.sp = foe->udib1.sp; |
| 1113 | #endif |
| 1114 | |
| 1115 | switch (ntohs(eth->h_proto)) { |
| 1116 | case ETH_P_IP: |
| 1117 | iph = ip_hdr(skb); |
| 1118 | switch (iph->protocol) { |
| 1119 | case IPPROTO_UDP: |
| 1120 | udp = 1; |
| 1121 | /* fallthrough */ |
| 1122 | case IPPROTO_TCP: |
| 1123 | entry.ipv4_hnapt.etype = htons(ETH_P_IP); |
| 1124 | |
| 1125 | /* DS-Lite WAN->LAN */ |
| 1126 | if (entry.ipv4_hnapt.bfib1.pkt_type == IPV4_DSLITE || |
| 1127 | entry.ipv4_hnapt.bfib1.pkt_type == IPV4_MAP_E) { |
| 1128 | entry.ipv4_dslite.sip = foe->ipv4_dslite.sip; |
| 1129 | entry.ipv4_dslite.dip = foe->ipv4_dslite.dip; |
| 1130 | entry.ipv4_dslite.sport = |
| 1131 | foe->ipv4_dslite.sport; |
| 1132 | entry.ipv4_dslite.dport = |
| 1133 | foe->ipv4_dslite.dport; |
| 1134 | |
| 1135 | #if defined(CONFIG_MEDIATEK_NETSYS_V2) |
| 1136 | if (entry.bfib1.pkt_type == IPV4_MAP_E) { |
| 1137 | pptr = skb_header_pointer(skb, |
| 1138 | iph->ihl * 4, |
| 1139 | sizeof(_ports), |
| 1140 | &_ports); |
developer | 4c32b7a | 2021-11-13 16:46:43 +0800 | [diff] [blame] | 1141 | if (unlikely(!pptr)) |
| 1142 | return -1; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1143 | |
| 1144 | entry.ipv4_dslite.new_sip = |
| 1145 | ntohl(iph->saddr); |
| 1146 | entry.ipv4_dslite.new_dip = |
| 1147 | ntohl(iph->daddr); |
| 1148 | entry.ipv4_dslite.new_sport = |
| 1149 | ntohs(pptr->src); |
| 1150 | entry.ipv4_dslite.new_dport = |
| 1151 | ntohs(pptr->dst); |
| 1152 | } |
| 1153 | #endif |
| 1154 | |
| 1155 | entry.ipv4_dslite.tunnel_sipv6_0 = |
| 1156 | foe->ipv4_dslite.tunnel_sipv6_0; |
| 1157 | entry.ipv4_dslite.tunnel_sipv6_1 = |
| 1158 | foe->ipv4_dslite.tunnel_sipv6_1; |
| 1159 | entry.ipv4_dslite.tunnel_sipv6_2 = |
| 1160 | foe->ipv4_dslite.tunnel_sipv6_2; |
| 1161 | entry.ipv4_dslite.tunnel_sipv6_3 = |
| 1162 | foe->ipv4_dslite.tunnel_sipv6_3; |
| 1163 | |
| 1164 | entry.ipv4_dslite.tunnel_dipv6_0 = |
| 1165 | foe->ipv4_dslite.tunnel_dipv6_0; |
| 1166 | entry.ipv4_dslite.tunnel_dipv6_1 = |
| 1167 | foe->ipv4_dslite.tunnel_dipv6_1; |
| 1168 | entry.ipv4_dslite.tunnel_dipv6_2 = |
| 1169 | foe->ipv4_dslite.tunnel_dipv6_2; |
| 1170 | entry.ipv4_dslite.tunnel_dipv6_3 = |
| 1171 | foe->ipv4_dslite.tunnel_dipv6_3; |
| 1172 | |
| 1173 | entry.ipv4_dslite.bfib1.rmt = 1; |
| 1174 | entry.ipv4_dslite.iblk2.dscp = iph->tos; |
| 1175 | entry.ipv4_dslite.vlan1 = hw_path->vlan_id; |
| 1176 | if (hnat_priv->data->per_flow_accounting) |
| 1177 | entry.ipv4_dslite.iblk2.mibf = 1; |
| 1178 | |
| 1179 | } else { |
| 1180 | entry.ipv4_hnapt.iblk2.dscp = iph->tos; |
| 1181 | if (hnat_priv->data->per_flow_accounting) |
| 1182 | entry.ipv4_hnapt.iblk2.mibf = 1; |
| 1183 | |
| 1184 | entry.ipv4_hnapt.vlan1 = hw_path->vlan_id; |
| 1185 | |
| 1186 | if (skb->vlan_tci && FROM_GE_WAN(skb) && IS_LAN(dev)) { |
| 1187 | entry.bfib1.vlan_layer += 1; |
| 1188 | |
| 1189 | if (entry.ipv4_hnapt.vlan1) |
| 1190 | entry.ipv4_hnapt.vlan2 = (skb->vlan_tci & VLAN_VID_MASK); |
| 1191 | else |
| 1192 | entry.ipv4_hnapt.vlan1 = (skb->vlan_tci & VLAN_VID_MASK); |
| 1193 | } |
| 1194 | |
| 1195 | entry.ipv4_hnapt.sip = foe->ipv4_hnapt.sip; |
| 1196 | entry.ipv4_hnapt.dip = foe->ipv4_hnapt.dip; |
| 1197 | entry.ipv4_hnapt.sport = foe->ipv4_hnapt.sport; |
| 1198 | entry.ipv4_hnapt.dport = foe->ipv4_hnapt.dport; |
| 1199 | |
| 1200 | entry.ipv4_hnapt.new_sip = ntohl(iph->saddr); |
| 1201 | entry.ipv4_hnapt.new_dip = ntohl(iph->daddr); |
| 1202 | } |
| 1203 | |
| 1204 | entry.ipv4_hnapt.bfib1.udp = udp; |
| 1205 | if (IS_IPV4_HNAPT(foe)) { |
| 1206 | pptr = skb_header_pointer(skb, iph->ihl * 4, |
| 1207 | sizeof(_ports), |
| 1208 | &_ports); |
developer | 4c32b7a | 2021-11-13 16:46:43 +0800 | [diff] [blame] | 1209 | if (unlikely(!pptr)) |
| 1210 | return -1; |
| 1211 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1212 | entry.ipv4_hnapt.new_sport = ntohs(pptr->src); |
| 1213 | entry.ipv4_hnapt.new_dport = ntohs(pptr->dst); |
| 1214 | } |
| 1215 | |
| 1216 | break; |
| 1217 | |
| 1218 | default: |
| 1219 | return -1; |
| 1220 | } |
| 1221 | trace_printk( |
| 1222 | "[%s]skb->head=%p, skb->data=%p,ip_hdr=%p, skb->len=%d, skb->data_len=%d\n", |
| 1223 | __func__, skb->head, skb->data, iph, skb->len, |
| 1224 | skb->data_len); |
| 1225 | break; |
| 1226 | |
| 1227 | case ETH_P_IPV6: |
| 1228 | ip6h = ipv6_hdr(skb); |
| 1229 | switch (ip6h->nexthdr) { |
| 1230 | case NEXTHDR_UDP: |
| 1231 | udp = 1; |
| 1232 | /* fallthrough */ |
| 1233 | case NEXTHDR_TCP: /* IPv6-5T or IPv6-3T */ |
| 1234 | entry.ipv6_5t_route.etype = htons(ETH_P_IPV6); |
| 1235 | |
| 1236 | entry.ipv6_5t_route.vlan1 = hw_path->vlan_id; |
| 1237 | |
| 1238 | if (skb->vlan_tci && FROM_GE_WAN(skb) && IS_LAN(dev)) { |
| 1239 | entry.bfib1.vlan_layer += 1; |
| 1240 | |
| 1241 | if (entry.ipv6_5t_route.vlan1) |
| 1242 | entry.ipv6_5t_route.vlan2 = (skb->vlan_tci & VLAN_VID_MASK); |
| 1243 | else |
| 1244 | entry.ipv6_5t_route.vlan1 = (skb->vlan_tci & VLAN_VID_MASK); |
| 1245 | } |
| 1246 | |
| 1247 | if (hnat_priv->data->per_flow_accounting) |
| 1248 | entry.ipv6_5t_route.iblk2.mibf = 1; |
| 1249 | entry.ipv6_5t_route.bfib1.udp = udp; |
| 1250 | |
| 1251 | if (IS_IPV6_6RD(foe)) { |
| 1252 | entry.ipv6_5t_route.bfib1.rmt = 1; |
| 1253 | entry.ipv6_6rd.tunnel_sipv4 = |
| 1254 | foe->ipv6_6rd.tunnel_sipv4; |
| 1255 | entry.ipv6_6rd.tunnel_dipv4 = |
| 1256 | foe->ipv6_6rd.tunnel_dipv4; |
| 1257 | } |
| 1258 | |
| 1259 | entry.ipv6_3t_route.ipv6_sip0 = |
| 1260 | foe->ipv6_3t_route.ipv6_sip0; |
| 1261 | entry.ipv6_3t_route.ipv6_sip1 = |
| 1262 | foe->ipv6_3t_route.ipv6_sip1; |
| 1263 | entry.ipv6_3t_route.ipv6_sip2 = |
| 1264 | foe->ipv6_3t_route.ipv6_sip2; |
| 1265 | entry.ipv6_3t_route.ipv6_sip3 = |
| 1266 | foe->ipv6_3t_route.ipv6_sip3; |
| 1267 | |
| 1268 | entry.ipv6_3t_route.ipv6_dip0 = |
| 1269 | foe->ipv6_3t_route.ipv6_dip0; |
| 1270 | entry.ipv6_3t_route.ipv6_dip1 = |
| 1271 | foe->ipv6_3t_route.ipv6_dip1; |
| 1272 | entry.ipv6_3t_route.ipv6_dip2 = |
| 1273 | foe->ipv6_3t_route.ipv6_dip2; |
| 1274 | entry.ipv6_3t_route.ipv6_dip3 = |
| 1275 | foe->ipv6_3t_route.ipv6_dip3; |
| 1276 | |
developer | 729f027 | 2021-06-09 17:28:38 +0800 | [diff] [blame] | 1277 | if (IS_IPV6_3T_ROUTE(foe)) { |
| 1278 | entry.ipv6_3t_route.prot = |
| 1279 | foe->ipv6_3t_route.prot; |
| 1280 | entry.ipv6_3t_route.hph = |
| 1281 | foe->ipv6_3t_route.hph; |
| 1282 | } |
| 1283 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1284 | if (IS_IPV6_5T_ROUTE(foe) || IS_IPV6_6RD(foe)) { |
| 1285 | entry.ipv6_5t_route.sport = |
| 1286 | foe->ipv6_5t_route.sport; |
| 1287 | entry.ipv6_5t_route.dport = |
| 1288 | foe->ipv6_5t_route.dport; |
| 1289 | } |
| 1290 | entry.ipv6_5t_route.iblk2.dscp = |
| 1291 | (ip6h->priority << 4 | |
| 1292 | (ip6h->flow_lbl[0] >> 4)); |
| 1293 | break; |
| 1294 | |
| 1295 | case NEXTHDR_IPIP: |
| 1296 | if ((!mape_toggle && |
| 1297 | entry.bfib1.pkt_type == IPV4_DSLITE) || |
| 1298 | (mape_toggle && |
| 1299 | entry.bfib1.pkt_type == IPV4_MAP_E)) { |
| 1300 | /* DS-Lite LAN->WAN */ |
| 1301 | entry.ipv4_dslite.bfib1.udp = |
| 1302 | foe->ipv4_dslite.bfib1.udp; |
| 1303 | entry.ipv4_dslite.sip = foe->ipv4_dslite.sip; |
| 1304 | entry.ipv4_dslite.dip = foe->ipv4_dslite.dip; |
| 1305 | entry.ipv4_dslite.sport = |
| 1306 | foe->ipv4_dslite.sport; |
| 1307 | entry.ipv4_dslite.dport = |
| 1308 | foe->ipv4_dslite.dport; |
| 1309 | |
| 1310 | entry.ipv4_dslite.tunnel_sipv6_0 = |
| 1311 | ntohl(ip6h->saddr.s6_addr32[0]); |
| 1312 | entry.ipv4_dslite.tunnel_sipv6_1 = |
| 1313 | ntohl(ip6h->saddr.s6_addr32[1]); |
| 1314 | entry.ipv4_dslite.tunnel_sipv6_2 = |
| 1315 | ntohl(ip6h->saddr.s6_addr32[2]); |
| 1316 | entry.ipv4_dslite.tunnel_sipv6_3 = |
| 1317 | ntohl(ip6h->saddr.s6_addr32[3]); |
| 1318 | |
| 1319 | entry.ipv4_dslite.tunnel_dipv6_0 = |
| 1320 | ntohl(ip6h->daddr.s6_addr32[0]); |
| 1321 | entry.ipv4_dslite.tunnel_dipv6_1 = |
| 1322 | ntohl(ip6h->daddr.s6_addr32[1]); |
| 1323 | entry.ipv4_dslite.tunnel_dipv6_2 = |
| 1324 | ntohl(ip6h->daddr.s6_addr32[2]); |
| 1325 | entry.ipv4_dslite.tunnel_dipv6_3 = |
| 1326 | ntohl(ip6h->daddr.s6_addr32[3]); |
| 1327 | |
| 1328 | ppe_fill_flow_lbl(&entry, ip6h); |
| 1329 | |
| 1330 | entry.ipv4_dslite.priority = ip6h->priority; |
| 1331 | entry.ipv4_dslite.hop_limit = ip6h->hop_limit; |
| 1332 | entry.ipv4_dslite.vlan1 = hw_path->vlan_id; |
| 1333 | if (hnat_priv->data->per_flow_accounting) |
| 1334 | entry.ipv4_dslite.iblk2.mibf = 1; |
| 1335 | } else if (mape_toggle && |
| 1336 | entry.bfib1.pkt_type == IPV4_HNAPT) { |
| 1337 | /* MapE LAN -> WAN */ |
| 1338 | mape = 1; |
| 1339 | entry.ipv4_hnapt.iblk2.dscp = |
| 1340 | foe->ipv4_hnapt.iblk2.dscp; |
| 1341 | if (hnat_priv->data->per_flow_accounting) |
| 1342 | entry.ipv4_hnapt.iblk2.mibf = 1; |
| 1343 | |
developer | bb81641 | 2021-06-11 15:43:44 +0800 | [diff] [blame] | 1344 | if (IS_GMAC1_MODE) |
| 1345 | entry.ipv4_hnapt.vlan1 = 1; |
| 1346 | else |
| 1347 | entry.ipv4_hnapt.vlan1 = hw_path->vlan_id; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1348 | |
| 1349 | entry.ipv4_hnapt.sip = foe->ipv4_hnapt.sip; |
| 1350 | entry.ipv4_hnapt.dip = foe->ipv4_hnapt.dip; |
| 1351 | entry.ipv4_hnapt.sport = foe->ipv4_hnapt.sport; |
| 1352 | entry.ipv4_hnapt.dport = foe->ipv4_hnapt.dport; |
| 1353 | |
| 1354 | entry.ipv4_hnapt.new_sip = |
| 1355 | foe->ipv4_hnapt.new_sip; |
| 1356 | entry.ipv4_hnapt.new_dip = |
| 1357 | foe->ipv4_hnapt.new_dip; |
| 1358 | entry.ipv4_hnapt.etype = htons(ETH_P_IP); |
| 1359 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1360 | if (qos_toggle) { |
| 1361 | entry.ipv4_hnapt.iblk2.qid = |
| 1362 | (hnat_priv->data->version == MTK_HNAT_V4) ? |
| 1363 | skb->mark & 0x7f : skb->mark & 0xf; |
| 1364 | entry.ipv4_hnapt.iblk2.fqos = 1; |
| 1365 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1366 | |
| 1367 | entry.ipv4_hnapt.bfib1.udp = |
| 1368 | foe->ipv4_hnapt.bfib1.udp; |
| 1369 | |
| 1370 | entry.ipv4_hnapt.new_sport = |
| 1371 | foe->ipv4_hnapt.new_sport; |
| 1372 | entry.ipv4_hnapt.new_dport = |
| 1373 | foe->ipv4_hnapt.new_dport; |
| 1374 | mape_l2w_v6h = *ip6h; |
| 1375 | } |
| 1376 | break; |
| 1377 | |
| 1378 | default: |
| 1379 | return -1; |
| 1380 | } |
| 1381 | |
| 1382 | trace_printk( |
| 1383 | "[%s]skb->head=%p, skb->data=%p,ipv6_hdr=%p, skb->len=%d, skb->data_len=%d\n", |
| 1384 | __func__, skb->head, skb->data, ip6h, skb->len, |
| 1385 | skb->data_len); |
| 1386 | break; |
| 1387 | |
| 1388 | default: |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1389 | iph = ip_hdr(skb); |
| 1390 | switch (entry.bfib1.pkt_type) { |
| 1391 | case IPV6_6RD: /* 6RD LAN->WAN */ |
| 1392 | entry.ipv6_6rd.ipv6_sip0 = foe->ipv6_6rd.ipv6_sip0; |
| 1393 | entry.ipv6_6rd.ipv6_sip1 = foe->ipv6_6rd.ipv6_sip1; |
| 1394 | entry.ipv6_6rd.ipv6_sip2 = foe->ipv6_6rd.ipv6_sip2; |
| 1395 | entry.ipv6_6rd.ipv6_sip3 = foe->ipv6_6rd.ipv6_sip3; |
| 1396 | |
| 1397 | entry.ipv6_6rd.ipv6_dip0 = foe->ipv6_6rd.ipv6_dip0; |
| 1398 | entry.ipv6_6rd.ipv6_dip1 = foe->ipv6_6rd.ipv6_dip1; |
| 1399 | entry.ipv6_6rd.ipv6_dip2 = foe->ipv6_6rd.ipv6_dip2; |
| 1400 | entry.ipv6_6rd.ipv6_dip3 = foe->ipv6_6rd.ipv6_dip3; |
| 1401 | |
| 1402 | entry.ipv6_6rd.sport = foe->ipv6_6rd.sport; |
| 1403 | entry.ipv6_6rd.dport = foe->ipv6_6rd.dport; |
| 1404 | entry.ipv6_6rd.tunnel_sipv4 = ntohl(iph->saddr); |
| 1405 | entry.ipv6_6rd.tunnel_dipv4 = ntohl(iph->daddr); |
| 1406 | entry.ipv6_6rd.hdr_chksum = ppe_get_chkbase(iph); |
| 1407 | entry.ipv6_6rd.flag = (ntohs(iph->frag_off) >> 13); |
| 1408 | entry.ipv6_6rd.ttl = iph->ttl; |
| 1409 | entry.ipv6_6rd.dscp = iph->tos; |
| 1410 | entry.ipv6_6rd.per_flow_6rd_id = 1; |
| 1411 | entry.ipv6_6rd.vlan1 = hw_path->vlan_id; |
| 1412 | if (hnat_priv->data->per_flow_accounting) |
| 1413 | entry.ipv6_6rd.iblk2.mibf = 1; |
| 1414 | break; |
| 1415 | |
| 1416 | default: |
| 1417 | return -1; |
| 1418 | } |
| 1419 | } |
| 1420 | |
| 1421 | /* Fill Layer2 Info.*/ |
| 1422 | entry = ppe_fill_L2_info(eth, entry, hw_path); |
| 1423 | |
| 1424 | /* Fill Info Blk*/ |
| 1425 | entry = ppe_fill_info_blk(eth, entry, hw_path); |
| 1426 | |
| 1427 | if (IS_LAN(dev)) { |
| 1428 | if (IS_DSA_LAN(dev)) |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1429 | port_id = hnat_dsa_fill_stag(dev, &entry, hw_path, |
| 1430 | ntohs(eth->h_proto), |
| 1431 | mape); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1432 | |
| 1433 | if (IS_BOND_MODE) |
| 1434 | gmac = ((skb_hnat_entry(skb) >> 1) % hnat_priv->gmac_num) ? |
| 1435 | NR_GMAC2_PORT : NR_GMAC1_PORT; |
| 1436 | else |
| 1437 | gmac = NR_GMAC1_PORT; |
| 1438 | } else if (IS_WAN(dev)) { |
| 1439 | if (IS_DSA_WAN(dev)) |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1440 | port_id = hnat_dsa_fill_stag(dev,&entry, hw_path, |
| 1441 | ntohs(eth->h_proto), |
| 1442 | mape); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1443 | if (mape_toggle && mape == 1) { |
| 1444 | gmac = NR_PDMA_PORT; |
| 1445 | /* Set act_dp = wan_dev */ |
| 1446 | entry.ipv4_hnapt.act_dp = dev->ifindex; |
| 1447 | } else { |
| 1448 | gmac = (IS_GMAC1_MODE) ? NR_GMAC1_PORT : NR_GMAC2_PORT; |
| 1449 | } |
| 1450 | } else if (IS_EXT(dev) && (FROM_GE_PPD(skb) || FROM_GE_LAN(skb) || |
developer | 99506e5 | 2021-06-30 22:03:02 +0800 | [diff] [blame] | 1451 | FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb) || FROM_WED(skb))) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1452 | if (!hnat_priv->data->whnat && IS_GMAC1_MODE) { |
| 1453 | entry.bfib1.vpm = 1; |
| 1454 | entry.bfib1.vlan_layer = 1; |
| 1455 | |
| 1456 | if (FROM_GE_LAN(skb)) |
| 1457 | entry.ipv4_hnapt.vlan1 = 1; |
| 1458 | else if (FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb)) |
| 1459 | entry.ipv4_hnapt.vlan1 = 2; |
| 1460 | } |
| 1461 | |
| 1462 | trace_printk("learn of lan or wan(iif=%x) --> %s(ext)\n", |
| 1463 | skb_hnat_iface(skb), dev->name); |
| 1464 | /* To CPU then stolen by pre-routing hant hook of LAN/WAN |
| 1465 | * Current setting is PDMA RX. |
| 1466 | */ |
| 1467 | gmac = NR_PDMA_PORT; |
| 1468 | if (IS_IPV4_GRP(foe)) |
| 1469 | entry.ipv4_hnapt.act_dp = dev->ifindex; |
| 1470 | else |
| 1471 | entry.ipv6_5t_route.act_dp = dev->ifindex; |
| 1472 | } else { |
| 1473 | printk_ratelimited(KERN_WARNING |
| 1474 | "Unknown case of dp, iif=%x --> %s\n", |
| 1475 | skb_hnat_iface(skb), dev->name); |
| 1476 | |
| 1477 | return 0; |
| 1478 | } |
| 1479 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1480 | if (IS_HQOS_MODE) |
| 1481 | qid = skb->mark & (MTK_QDMA_TX_MASK); |
| 1482 | else if (IS_PPPQ_MODE) |
| 1483 | qid = port_id & MTK_QDMA_TX_MASK; |
| 1484 | else |
| 1485 | qid = 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1486 | |
| 1487 | if (IS_IPV4_GRP(foe)) { |
| 1488 | entry.ipv4_hnapt.iblk2.dp = gmac; |
| 1489 | entry.ipv4_hnapt.iblk2.port_mg = |
| 1490 | (hnat_priv->data->version == MTK_HNAT_V1) ? 0x3f : 0; |
developer | 2494820 | 2021-11-24 17:38:27 +0800 | [diff] [blame^] | 1491 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1492 | if (qos_toggle) { |
| 1493 | if (hnat_priv->data->version == MTK_HNAT_V4) { |
| 1494 | entry.ipv4_hnapt.iblk2.qid = qid & 0x7f; |
| 1495 | } else { |
| 1496 | /* qid[5:0]= port_mg[1:0]+ qid[3:0] */ |
| 1497 | entry.ipv4_hnapt.iblk2.qid = qid & 0xf; |
| 1498 | if (hnat_priv->data->version != MTK_HNAT_V1) |
| 1499 | entry.ipv4_hnapt.iblk2.port_mg |= |
| 1500 | ((qid >> 4) & 0x3); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1501 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1502 | if (((IS_EXT(dev) && (FROM_GE_LAN(skb) || |
| 1503 | FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))) || |
| 1504 | ((mape_toggle && mape == 1) && !FROM_EXT(skb))) && |
| 1505 | (!whnat)) { |
| 1506 | entry.ipv4_hnapt.etype = htons(HQOS_MAGIC_TAG); |
| 1507 | entry.ipv4_hnapt.vlan1 = skb_hnat_entry(skb); |
| 1508 | entry.bfib1.vlan_layer = 1; |
| 1509 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1510 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1511 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1512 | if (FROM_EXT(skb) || skb_hnat_sport(skb) == NR_QDMA_PORT) |
| 1513 | entry.ipv4_hnapt.iblk2.fqos = 0; |
| 1514 | else |
| 1515 | entry.ipv4_hnapt.iblk2.fqos = 1; |
| 1516 | } else { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1517 | entry.ipv4_hnapt.iblk2.fqos = 0; |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1518 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1519 | } else { |
| 1520 | entry.ipv6_5t_route.iblk2.dp = gmac; |
| 1521 | entry.ipv6_5t_route.iblk2.port_mg = |
| 1522 | (hnat_priv->data->version == MTK_HNAT_V1) ? 0x3f : 0; |
developer | 2494820 | 2021-11-24 17:38:27 +0800 | [diff] [blame^] | 1523 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1524 | if (qos_toggle) { |
| 1525 | if (hnat_priv->data->version == MTK_HNAT_V4) { |
| 1526 | entry.ipv6_5t_route.iblk2.qid = qid & 0x7f; |
| 1527 | } else { |
| 1528 | /* qid[5:0]= port_mg[1:0]+ qid[3:0] */ |
| 1529 | entry.ipv6_5t_route.iblk2.qid = qid & 0xf; |
| 1530 | if (hnat_priv->data->version != MTK_HNAT_V1) |
| 1531 | entry.ipv6_5t_route.iblk2.port_mg |= |
| 1532 | ((qid >> 4) & 0x3); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1533 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1534 | if (IS_EXT(dev) && (FROM_GE_LAN(skb) || |
| 1535 | FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb)) && |
| 1536 | (!whnat)) { |
| 1537 | entry.ipv6_5t_route.etype = htons(HQOS_MAGIC_TAG); |
| 1538 | entry.ipv6_5t_route.vlan1 = skb_hnat_entry(skb); |
| 1539 | entry.bfib1.vlan_layer = 1; |
| 1540 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1541 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1542 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1543 | if (FROM_EXT(skb)) |
| 1544 | entry.ipv6_5t_route.iblk2.fqos = 0; |
| 1545 | else |
| 1546 | entry.ipv6_5t_route.iblk2.fqos = 1; |
| 1547 | } else { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1548 | entry.ipv6_5t_route.iblk2.fqos = 0; |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1549 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1550 | } |
| 1551 | |
developer | 60e6096 | 2021-06-15 21:05:07 +0800 | [diff] [blame] | 1552 | /* The INFO2.port_mg and 2nd VLAN ID fields of PPE entry are redefined |
| 1553 | * by Wi-Fi whnat engine. These data and INFO2.dp will be updated and |
| 1554 | * the entry is set to BIND state in mtk_sw_nat_hook_tx(). |
| 1555 | */ |
| 1556 | if (!whnat) |
| 1557 | entry.bfib1.state = BIND; |
| 1558 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1559 | memcpy(foe, &entry, sizeof(entry)); |
| 1560 | /*reset statistic for this entry*/ |
| 1561 | if (hnat_priv->data->per_flow_accounting) |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 1562 | memset(&hnat_priv->acct[skb_hnat_ppe(skb)][skb_hnat_entry(skb)], |
| 1563 | 0, sizeof(struct mib_entry)); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1564 | |
| 1565 | wmb(); |
developer | fdfe157 | 2021-09-13 16:56:33 +0800 | [diff] [blame] | 1566 | skb_hnat_filled(skb) = HNAT_INFO_FILLED; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1567 | |
| 1568 | return 0; |
| 1569 | } |
| 1570 | |
| 1571 | int mtk_sw_nat_hook_tx(struct sk_buff *skb, int gmac_no) |
| 1572 | { |
| 1573 | struct foe_entry *entry; |
| 1574 | struct ethhdr *eth; |
| 1575 | |
developer | fdfe157 | 2021-09-13 16:56:33 +0800 | [diff] [blame] | 1576 | if (skb_hnat_alg(skb) || !is_hnat_info_filled(skb) || |
| 1577 | !is_magic_tag_valid(skb) || !IS_SPACE_AVAILABLE_HEAD(skb)) |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1578 | return NF_ACCEPT; |
| 1579 | |
| 1580 | trace_printk( |
| 1581 | "[%s]entry=%x reason=%x gmac_no=%x wdmaid=%x rxid=%x wcid=%x bssid=%x\n", |
| 1582 | __func__, skb_hnat_entry(skb), skb_hnat_reason(skb), gmac_no, |
| 1583 | skb_hnat_wdma_id(skb), skb_hnat_bss_id(skb), |
| 1584 | skb_hnat_wc_id(skb), skb_hnat_rx_id(skb)); |
| 1585 | |
developer | 99506e5 | 2021-06-30 22:03:02 +0800 | [diff] [blame] | 1586 | if ((gmac_no != NR_WDMA0_PORT) && (gmac_no != NR_WDMA1_PORT) && |
| 1587 | (gmac_no != NR_WHNAT_WDMA_PORT)) |
| 1588 | return NF_ACCEPT; |
| 1589 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1590 | if (!skb_hnat_is_hashed(skb)) |
| 1591 | return NF_ACCEPT; |
| 1592 | |
developer | 955a6f6 | 2021-07-26 10:54:39 +0800 | [diff] [blame] | 1593 | if (skb_hnat_entry(skb) >= hnat_priv->foe_etry_num || |
| 1594 | skb_hnat_ppe(skb) >= CFG_PPE_NUM) |
| 1595 | return NF_ACCEPT; |
| 1596 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 1597 | entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)]; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1598 | if (entry_hnat_is_bound(entry)) |
| 1599 | return NF_ACCEPT; |
| 1600 | |
| 1601 | if (skb_hnat_reason(skb) != HIT_UNBIND_RATE_REACH) |
| 1602 | return NF_ACCEPT; |
| 1603 | |
| 1604 | eth = eth_hdr(skb); |
developer | 8116b0a | 2021-08-23 18:07:20 +0800 | [diff] [blame] | 1605 | |
| 1606 | /*not bind multicast if PPE mcast not enable*/ |
developer | fdfe157 | 2021-09-13 16:56:33 +0800 | [diff] [blame] | 1607 | if (!hnat_priv->data->mcast) { |
| 1608 | if (is_multicast_ether_addr(eth->h_dest)) |
| 1609 | return NF_ACCEPT; |
| 1610 | |
| 1611 | if (IS_IPV4_GRP(entry)) |
| 1612 | entry->ipv4_hnapt.iblk2.mcast = 0; |
| 1613 | else |
| 1614 | entry->ipv6_5t_route.iblk2.mcast = 0; |
| 1615 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1616 | |
| 1617 | /* Some mt_wifi virtual interfaces, such as apcli, |
| 1618 | * will change the smac for specail purpose. |
| 1619 | */ |
| 1620 | switch (entry->bfib1.pkt_type) { |
| 1621 | case IPV4_HNAPT: |
| 1622 | case IPV4_HNAT: |
| 1623 | entry->ipv4_hnapt.smac_hi = swab32(*((u32 *)eth->h_source)); |
| 1624 | entry->ipv4_hnapt.smac_lo = swab16(*((u16 *)ð->h_source[4])); |
| 1625 | break; |
| 1626 | case IPV4_DSLITE: |
| 1627 | case IPV4_MAP_E: |
| 1628 | case IPV6_6RD: |
| 1629 | case IPV6_5T_ROUTE: |
| 1630 | case IPV6_3T_ROUTE: |
| 1631 | entry->ipv6_5t_route.smac_hi = swab32(*((u32 *)eth->h_source)); |
| 1632 | entry->ipv6_5t_route.smac_lo = swab16(*((u16 *)ð->h_source[4])); |
| 1633 | break; |
| 1634 | } |
| 1635 | |
developer | 0ff7688 | 2021-10-26 10:54:13 +0800 | [diff] [blame] | 1636 | if (skb->vlan_tci) { |
| 1637 | entry->bfib1.vlan_layer += 1; |
| 1638 | entry->bfib1.vpm = 1; |
| 1639 | if (IS_IPV4_GRP(entry)) { |
| 1640 | entry->ipv4_hnapt.etype = htons(ETH_P_8021Q); |
| 1641 | if(entry->ipv4_hnapt.vlan1) |
| 1642 | entry->ipv4_hnapt.vlan2 = skb->vlan_tci; |
| 1643 | else |
| 1644 | entry->ipv4_hnapt.vlan1 = skb->vlan_tci; |
| 1645 | } else if (IS_IPV6_GRP(entry)) { |
| 1646 | entry->ipv6_5t_route.etype = htons(ETH_P_8021Q); |
| 1647 | if(entry->ipv6_5t_route.vlan1) |
| 1648 | entry->ipv6_5t_route.vlan2 = skb->vlan_tci; |
| 1649 | else |
| 1650 | entry->ipv6_5t_route.vlan1 = skb->vlan_tci; |
| 1651 | } |
| 1652 | } else { |
| 1653 | entry->bfib1.vpm = 0; |
| 1654 | entry->bfib1.vlan_layer = 0; |
| 1655 | } |
developer | 60e6096 | 2021-06-15 21:05:07 +0800 | [diff] [blame] | 1656 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1657 | /* MT7622 wifi hw_nat not support QoS */ |
| 1658 | if (IS_IPV4_GRP(entry)) { |
| 1659 | entry->ipv4_hnapt.iblk2.fqos = 0; |
developer | e567ad3 | 2021-05-25 17:16:17 +0800 | [diff] [blame] | 1660 | if ((hnat_priv->data->version == MTK_HNAT_V2 && |
| 1661 | gmac_no == NR_WHNAT_WDMA_PORT) || |
| 1662 | (hnat_priv->data->version == MTK_HNAT_V4 && |
| 1663 | (gmac_no == NR_WDMA0_PORT || gmac_no == NR_WDMA1_PORT))) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1664 | entry->ipv4_hnapt.winfo.bssid = skb_hnat_bss_id(skb); |
| 1665 | entry->ipv4_hnapt.winfo.wcid = skb_hnat_wc_id(skb); |
| 1666 | #if defined(CONFIG_MEDIATEK_NETSYS_V2) |
developer | 2494820 | 2021-11-24 17:38:27 +0800 | [diff] [blame^] | 1667 | entry->ipv4_hnapt.iblk2.fqos = (qos_toggle) ? 1 : 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1668 | entry->ipv4_hnapt.iblk2.rxid = skb_hnat_rx_id(skb); |
| 1669 | entry->ipv4_hnapt.iblk2.winfoi = 1; |
| 1670 | #else |
| 1671 | entry->ipv4_hnapt.winfo.rxid = skb_hnat_rx_id(skb); |
| 1672 | entry->ipv4_hnapt.iblk2w.winfoi = 1; |
| 1673 | entry->ipv4_hnapt.iblk2w.wdmaid = skb_hnat_wdma_id(skb); |
| 1674 | #endif |
| 1675 | } else { |
| 1676 | if (IS_GMAC1_MODE && !hnat_dsa_is_enable(hnat_priv)) { |
| 1677 | entry->bfib1.vpm = 1; |
| 1678 | entry->bfib1.vlan_layer = 1; |
| 1679 | |
| 1680 | if (FROM_GE_LAN(skb)) |
| 1681 | entry->ipv4_hnapt.vlan1 = 1; |
| 1682 | else if (FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb)) |
| 1683 | entry->ipv4_hnapt.vlan1 = 2; |
| 1684 | } |
| 1685 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1686 | if (qos_toggle && |
| 1687 | (FROM_GE_LAN(skb) || FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1688 | entry->bfib1.vpm = 0; |
| 1689 | entry->bfib1.vlan_layer = 1; |
| 1690 | entry->ipv4_hnapt.etype = htons(HQOS_MAGIC_TAG); |
| 1691 | entry->ipv4_hnapt.vlan1 = skb_hnat_entry(skb); |
| 1692 | entry->ipv4_hnapt.iblk2.fqos = 1; |
| 1693 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1694 | } |
| 1695 | entry->ipv4_hnapt.iblk2.dp = gmac_no; |
| 1696 | } else { |
| 1697 | entry->ipv6_5t_route.iblk2.fqos = 0; |
developer | e567ad3 | 2021-05-25 17:16:17 +0800 | [diff] [blame] | 1698 | if ((hnat_priv->data->version == MTK_HNAT_V2 && |
| 1699 | gmac_no == NR_WHNAT_WDMA_PORT) || |
| 1700 | (hnat_priv->data->version == MTK_HNAT_V4 && |
| 1701 | (gmac_no == NR_WDMA0_PORT || gmac_no == NR_WDMA1_PORT))) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1702 | entry->ipv6_5t_route.winfo.bssid = skb_hnat_bss_id(skb); |
| 1703 | entry->ipv6_5t_route.winfo.wcid = skb_hnat_wc_id(skb); |
| 1704 | #if defined(CONFIG_MEDIATEK_NETSYS_V2) |
developer | 2494820 | 2021-11-24 17:38:27 +0800 | [diff] [blame^] | 1705 | entry->ipv6_5t_route.iblk2.fqos = (qos_toggle) ? 1 : 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1706 | entry->ipv6_5t_route.iblk2.rxid = skb_hnat_rx_id(skb); |
| 1707 | entry->ipv6_5t_route.iblk2.winfoi = 1; |
| 1708 | #else |
| 1709 | entry->ipv6_5t_route.winfo.rxid = skb_hnat_rx_id(skb); |
| 1710 | entry->ipv6_5t_route.iblk2w.winfoi = 1; |
| 1711 | entry->ipv6_5t_route.iblk2w.wdmaid = skb_hnat_wdma_id(skb); |
| 1712 | #endif |
| 1713 | } else { |
| 1714 | if (IS_GMAC1_MODE && !hnat_dsa_is_enable(hnat_priv)) { |
| 1715 | entry->bfib1.vpm = 1; |
| 1716 | entry->bfib1.vlan_layer = 1; |
| 1717 | |
| 1718 | if (FROM_GE_LAN(skb)) |
| 1719 | entry->ipv6_5t_route.vlan1 = 1; |
| 1720 | else if (FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb)) |
| 1721 | entry->ipv6_5t_route.vlan1 = 2; |
| 1722 | } |
| 1723 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 1724 | if (qos_toggle && |
| 1725 | (FROM_GE_LAN(skb) || FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1726 | entry->bfib1.vpm = 0; |
| 1727 | entry->bfib1.vlan_layer = 1; |
| 1728 | entry->ipv6_5t_route.etype = htons(HQOS_MAGIC_TAG); |
| 1729 | entry->ipv6_5t_route.vlan1 = skb_hnat_entry(skb); |
| 1730 | entry->ipv6_5t_route.iblk2.fqos = 1; |
| 1731 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1732 | } |
| 1733 | entry->ipv6_5t_route.iblk2.dp = gmac_no; |
| 1734 | } |
| 1735 | |
| 1736 | entry->bfib1.state = BIND; |
| 1737 | |
| 1738 | return NF_ACCEPT; |
| 1739 | } |
| 1740 | |
| 1741 | int mtk_sw_nat_hook_rx(struct sk_buff *skb) |
| 1742 | { |
developer | 99506e5 | 2021-06-30 22:03:02 +0800 | [diff] [blame] | 1743 | if (!IS_SPACE_AVAILABLE_HEAD(skb) || !FROM_WED(skb)) { |
| 1744 | skb_hnat_magic_tag(skb) = 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1745 | return NF_ACCEPT; |
developer | 99506e5 | 2021-06-30 22:03:02 +0800 | [diff] [blame] | 1746 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1747 | |
| 1748 | skb_hnat_alg(skb) = 0; |
developer | fdfe157 | 2021-09-13 16:56:33 +0800 | [diff] [blame] | 1749 | skb_hnat_filled(skb) = 0; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1750 | skb_hnat_magic_tag(skb) = HNAT_MAGIC_TAG; |
| 1751 | |
| 1752 | if (skb_hnat_iface(skb) == FOE_MAGIC_WED0) |
| 1753 | skb_hnat_sport(skb) = NR_WDMA0_PORT; |
| 1754 | else if (skb_hnat_iface(skb) == FOE_MAGIC_WED1) |
| 1755 | skb_hnat_sport(skb) = NR_WDMA1_PORT; |
| 1756 | |
| 1757 | return NF_ACCEPT; |
| 1758 | } |
| 1759 | |
| 1760 | void mtk_ppe_dev_register_hook(struct net_device *dev) |
| 1761 | { |
| 1762 | int i, number = 0; |
| 1763 | struct extdev_entry *ext_entry; |
| 1764 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1765 | for (i = 1; i < MAX_IF_NUM; i++) { |
| 1766 | if (hnat_priv->wifi_hook_if[i] == dev) { |
| 1767 | pr_info("%s : %s has been registered in wifi_hook_if table[%d]\n", |
| 1768 | __func__, dev->name, i); |
| 1769 | return; |
| 1770 | } |
| 1771 | if (!hnat_priv->wifi_hook_if[i]) { |
| 1772 | if (find_extif_from_devname(dev->name)) { |
| 1773 | extif_set_dev(dev); |
| 1774 | goto add_wifi_hook_if; |
| 1775 | } |
| 1776 | |
| 1777 | number = get_ext_device_number(); |
| 1778 | if (number >= MAX_EXT_DEVS) { |
| 1779 | pr_info("%s : extdev array is full. %s is not registered\n", |
| 1780 | __func__, dev->name); |
| 1781 | return; |
| 1782 | } |
| 1783 | |
| 1784 | ext_entry = kzalloc(sizeof(*ext_entry), GFP_KERNEL); |
| 1785 | if (!ext_entry) |
| 1786 | return; |
| 1787 | |
developer | 4c32b7a | 2021-11-13 16:46:43 +0800 | [diff] [blame] | 1788 | strncpy(ext_entry->name, dev->name, IFNAMSIZ - 1); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1789 | dev_hold(dev); |
| 1790 | ext_entry->dev = dev; |
| 1791 | ext_if_add(ext_entry); |
| 1792 | |
| 1793 | add_wifi_hook_if: |
| 1794 | dev_hold(dev); |
| 1795 | hnat_priv->wifi_hook_if[i] = dev; |
| 1796 | |
| 1797 | break; |
| 1798 | } |
| 1799 | } |
| 1800 | pr_info("%s : ineterface %s register (%d)\n", __func__, dev->name, i); |
| 1801 | } |
| 1802 | |
| 1803 | void mtk_ppe_dev_unregister_hook(struct net_device *dev) |
| 1804 | { |
| 1805 | int i; |
| 1806 | |
| 1807 | for (i = 1; i < MAX_IF_NUM; i++) { |
| 1808 | if (hnat_priv->wifi_hook_if[i] == dev) { |
| 1809 | hnat_priv->wifi_hook_if[i] = NULL; |
| 1810 | dev_put(dev); |
| 1811 | |
| 1812 | break; |
| 1813 | } |
| 1814 | } |
| 1815 | |
| 1816 | extif_put_dev(dev); |
| 1817 | pr_info("%s : ineterface %s set null (%d)\n", __func__, dev->name, i); |
| 1818 | } |
| 1819 | |
| 1820 | static unsigned int mtk_hnat_accel_type(struct sk_buff *skb) |
| 1821 | { |
| 1822 | struct dst_entry *dst; |
| 1823 | struct nf_conn *ct; |
| 1824 | enum ip_conntrack_info ctinfo; |
| 1825 | const struct nf_conn_help *help; |
| 1826 | |
| 1827 | /* Do not accelerate 1st round of xfrm flow, and 2nd round of xfrm flow |
| 1828 | * is from local_out which is also filtered in sanity check. |
| 1829 | */ |
| 1830 | dst = skb_dst(skb); |
| 1831 | if (dst && dst_xfrm(dst)) |
| 1832 | return 0; |
| 1833 | |
| 1834 | ct = nf_ct_get(skb, &ctinfo); |
| 1835 | if (!ct) |
| 1836 | return 1; |
| 1837 | |
| 1838 | /* rcu_read_lock()ed by nf_hook_slow */ |
| 1839 | help = nfct_help(ct); |
| 1840 | if (help && rcu_dereference(help->helper)) |
| 1841 | return 0; |
| 1842 | |
| 1843 | return 1; |
| 1844 | } |
| 1845 | |
developer | 6f4a0c7 | 2021-10-19 10:04:22 +0800 | [diff] [blame] | 1846 | static void mtk_hnat_dscp_update(struct sk_buff *skb, struct foe_entry *entry) |
| 1847 | { |
| 1848 | struct iphdr *iph; |
| 1849 | struct ethhdr *eth; |
| 1850 | struct ipv6hdr *ip6h; |
| 1851 | bool flag = false; |
| 1852 | |
| 1853 | eth = eth_hdr(skb); |
| 1854 | switch (ntohs(eth->h_proto)) { |
| 1855 | case ETH_P_IP: |
| 1856 | iph = ip_hdr(skb); |
| 1857 | if (entry->ipv4_hnapt.iblk2.dscp != iph->tos) |
| 1858 | flag = true; |
| 1859 | break; |
| 1860 | case ETH_P_IPV6: |
| 1861 | ip6h = ipv6_hdr(skb); |
| 1862 | if (entry->ipv6_5t_route.iblk2.dscp != |
| 1863 | (ip6h->priority << 4 | |
| 1864 | (ip6h->flow_lbl[0] >> 4))) |
| 1865 | flag = true; |
| 1866 | break; |
| 1867 | default: |
| 1868 | return; |
| 1869 | } |
| 1870 | |
| 1871 | if (flag) { |
| 1872 | memset(entry, 0, sizeof(struct foe_entry)); |
| 1873 | hnat_cache_ebl(1); |
| 1874 | } |
| 1875 | } |
| 1876 | |
developer | 30a4768 | 2021-11-02 17:06:14 +0800 | [diff] [blame] | 1877 | static void mtk_hnat_nf_update(struct sk_buff *skb) |
| 1878 | { |
| 1879 | struct nf_conn *ct; |
| 1880 | struct nf_conn_acct *acct; |
| 1881 | struct nf_conn_counter *counter; |
| 1882 | enum ip_conntrack_info ctinfo; |
| 1883 | struct hnat_accounting diff; |
| 1884 | |
| 1885 | ct = nf_ct_get(skb, &ctinfo); |
| 1886 | if (ct) { |
| 1887 | if (!hnat_get_count(hnat_priv, skb_hnat_ppe(skb), skb_hnat_entry(skb), &diff)) |
| 1888 | return; |
| 1889 | |
| 1890 | acct = nf_conn_acct_find(ct); |
| 1891 | if (acct) { |
| 1892 | counter = acct->counter; |
| 1893 | atomic64_add(diff.packets, &counter[CTINFO2DIR(ctinfo)].packets); |
| 1894 | atomic64_add(diff.bytes, &counter[CTINFO2DIR(ctinfo)].bytes); |
| 1895 | } |
| 1896 | } |
| 1897 | } |
| 1898 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1899 | static unsigned int mtk_hnat_nf_post_routing( |
| 1900 | struct sk_buff *skb, const struct net_device *out, |
| 1901 | unsigned int (*fn)(struct sk_buff *, const struct net_device *, |
| 1902 | struct flow_offload_hw_path *), |
| 1903 | const char *func) |
| 1904 | { |
| 1905 | struct foe_entry *entry; |
| 1906 | struct flow_offload_hw_path hw_path = { .dev = (struct net_device*)out, |
developer | e576351 | 2021-05-21 01:04:58 +0800 | [diff] [blame] | 1907 | .virt_dev = (struct net_device*)out }; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1908 | const struct net_device *arp_dev = out; |
| 1909 | |
| 1910 | if (skb_hnat_alg(skb) || unlikely(!is_magic_tag_valid(skb) || |
| 1911 | !IS_SPACE_AVAILABLE_HEAD(skb))) |
| 1912 | return 0; |
| 1913 | |
| 1914 | if (unlikely(!skb_hnat_is_hashed(skb))) |
| 1915 | return 0; |
| 1916 | |
| 1917 | if (out->netdev_ops->ndo_flow_offload_check) { |
developer | e576351 | 2021-05-21 01:04:58 +0800 | [diff] [blame] | 1918 | out->netdev_ops->ndo_flow_offload_check(&hw_path); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1919 | out = (IS_GMAC1_MODE) ? hw_path.virt_dev : hw_path.dev; |
| 1920 | } |
| 1921 | |
| 1922 | if (!IS_LAN(out) && !IS_WAN(out) && !IS_EXT(out)) |
| 1923 | return 0; |
| 1924 | |
| 1925 | trace_printk("[%s] case hit, %x-->%s, reason=%x\n", __func__, |
| 1926 | skb_hnat_iface(skb), out->name, skb_hnat_reason(skb)); |
| 1927 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 1928 | entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)]; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1929 | |
| 1930 | switch (skb_hnat_reason(skb)) { |
| 1931 | case HIT_UNBIND_RATE_REACH: |
| 1932 | if (entry_hnat_is_bound(entry)) |
| 1933 | break; |
| 1934 | |
| 1935 | if (fn && !mtk_hnat_accel_type(skb)) |
| 1936 | break; |
| 1937 | |
| 1938 | if (fn && fn(skb, arp_dev, &hw_path)) |
| 1939 | break; |
| 1940 | |
| 1941 | skb_to_hnat_info(skb, out, entry, &hw_path); |
| 1942 | break; |
| 1943 | case HIT_BIND_KEEPALIVE_DUP_OLD_HDR: |
developer | 30a4768 | 2021-11-02 17:06:14 +0800 | [diff] [blame] | 1944 | /* update hnat count to nf_conntrack by keepalive */ |
| 1945 | if (hnat_priv->data->per_flow_accounting && hnat_priv->nf_stat_en) |
| 1946 | mtk_hnat_nf_update(skb); |
| 1947 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1948 | if (fn && !mtk_hnat_accel_type(skb)) |
| 1949 | break; |
| 1950 | |
developer | 6f4a0c7 | 2021-10-19 10:04:22 +0800 | [diff] [blame] | 1951 | /* update dscp for qos */ |
| 1952 | mtk_hnat_dscp_update(skb, entry); |
| 1953 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1954 | /* update mcast timestamp*/ |
| 1955 | if (hnat_priv->data->version == MTK_HNAT_V3 && |
| 1956 | hnat_priv->data->mcast && entry->bfib1.sta == 1) |
| 1957 | entry->ipv4_hnapt.m_timestamp = foe_timestamp(hnat_priv); |
| 1958 | |
| 1959 | if (entry_hnat_is_bound(entry)) { |
| 1960 | memset(skb_hnat_info(skb), 0, FOE_INFO_LEN); |
| 1961 | |
| 1962 | return -1; |
| 1963 | } |
| 1964 | break; |
| 1965 | case HIT_BIND_MULTICAST_TO_CPU: |
| 1966 | case HIT_BIND_MULTICAST_TO_GMAC_CPU: |
| 1967 | /*do not forward to gdma again,if ppe already done it*/ |
| 1968 | if (IS_LAN(out) || IS_WAN(out)) |
| 1969 | return -1; |
| 1970 | break; |
| 1971 | } |
| 1972 | |
| 1973 | return 0; |
| 1974 | } |
| 1975 | |
| 1976 | static unsigned int |
| 1977 | mtk_hnat_ipv6_nf_local_out(void *priv, struct sk_buff *skb, |
| 1978 | const struct nf_hook_state *state) |
| 1979 | { |
| 1980 | struct foe_entry *entry; |
| 1981 | struct ipv6hdr *ip6h; |
| 1982 | struct iphdr _iphdr; |
| 1983 | const struct iphdr *iph; |
| 1984 | struct tcpudphdr _ports; |
| 1985 | const struct tcpudphdr *pptr; |
| 1986 | int udp = 0; |
| 1987 | |
| 1988 | if (unlikely(!skb_hnat_is_hashed(skb))) |
| 1989 | return NF_ACCEPT; |
| 1990 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 1991 | entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)]; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1992 | if (skb_hnat_reason(skb) == HIT_UNBIND_RATE_REACH) { |
| 1993 | ip6h = ipv6_hdr(skb); |
| 1994 | if (ip6h->nexthdr == NEXTHDR_IPIP) { |
| 1995 | /* Map-E LAN->WAN: need to record orig info before fn. */ |
| 1996 | if (mape_toggle) { |
| 1997 | iph = skb_header_pointer(skb, IPV6_HDR_LEN, |
| 1998 | sizeof(_iphdr), &_iphdr); |
developer | 4c32b7a | 2021-11-13 16:46:43 +0800 | [diff] [blame] | 1999 | if (unlikely(!iph)) |
| 2000 | return NF_ACCEPT; |
| 2001 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2002 | switch (iph->protocol) { |
| 2003 | case IPPROTO_UDP: |
| 2004 | udp = 1; |
| 2005 | case IPPROTO_TCP: |
| 2006 | break; |
| 2007 | |
| 2008 | default: |
| 2009 | return NF_ACCEPT; |
| 2010 | } |
| 2011 | |
| 2012 | pptr = skb_header_pointer(skb, IPV6_HDR_LEN + iph->ihl * 4, |
| 2013 | sizeof(_ports), &_ports); |
developer | 4c32b7a | 2021-11-13 16:46:43 +0800 | [diff] [blame] | 2014 | if (unlikely(!pptr)) |
| 2015 | return NF_ACCEPT; |
| 2016 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2017 | entry->bfib1.udp = udp; |
| 2018 | |
| 2019 | #if defined(CONFIG_MEDIATEK_NETSYS_V2) |
| 2020 | entry->bfib1.pkt_type = IPV4_MAP_E; |
| 2021 | entry->ipv4_dslite.iblk2.dscp = iph->tos; |
| 2022 | entry->ipv4_dslite.new_sip = ntohl(iph->saddr); |
| 2023 | entry->ipv4_dslite.new_dip = ntohl(iph->daddr); |
| 2024 | entry->ipv4_dslite.new_sport = ntohs(pptr->src); |
| 2025 | entry->ipv4_dslite.new_dport = ntohs(pptr->dst); |
| 2026 | #else |
| 2027 | entry->ipv4_hnapt.iblk2.dscp = iph->tos; |
| 2028 | entry->ipv4_hnapt.new_sip = ntohl(iph->saddr); |
| 2029 | entry->ipv4_hnapt.new_dip = ntohl(iph->daddr); |
| 2030 | entry->ipv4_hnapt.new_sport = ntohs(pptr->src); |
| 2031 | entry->ipv4_hnapt.new_dport = ntohs(pptr->dst); |
| 2032 | #endif |
| 2033 | } else { |
| 2034 | entry->bfib1.pkt_type = IPV4_DSLITE; |
| 2035 | } |
| 2036 | } |
| 2037 | } |
| 2038 | return NF_ACCEPT; |
| 2039 | } |
| 2040 | |
| 2041 | static unsigned int |
| 2042 | mtk_hnat_ipv6_nf_post_routing(void *priv, struct sk_buff *skb, |
| 2043 | const struct nf_hook_state *state) |
| 2044 | { |
| 2045 | post_routing_print(skb, state->in, state->out, __func__); |
| 2046 | |
| 2047 | if (!mtk_hnat_nf_post_routing(skb, state->out, hnat_ipv6_get_nexthop, |
| 2048 | __func__)) |
| 2049 | return NF_ACCEPT; |
| 2050 | |
| 2051 | trace_printk( |
| 2052 | "%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x, sport=0x%x, reason=0x%x, alg=0x%x)\n", |
| 2053 | __func__, skb_hnat_iface(skb), state->out->name, HNAT_SKB_CB2(skb)->magic, |
| 2054 | skb_hnat_entry(skb), skb_hnat_sport(skb), skb_hnat_reason(skb), |
| 2055 | skb_hnat_alg(skb)); |
| 2056 | |
| 2057 | return NF_DROP; |
| 2058 | } |
| 2059 | |
| 2060 | static unsigned int |
| 2061 | mtk_hnat_ipv4_nf_post_routing(void *priv, struct sk_buff *skb, |
| 2062 | const struct nf_hook_state *state) |
| 2063 | { |
| 2064 | post_routing_print(skb, state->in, state->out, __func__); |
| 2065 | |
| 2066 | if (!mtk_hnat_nf_post_routing(skb, state->out, hnat_ipv4_get_nexthop, |
| 2067 | __func__)) |
| 2068 | return NF_ACCEPT; |
| 2069 | |
| 2070 | trace_printk( |
| 2071 | "%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x, sport=0x%x, reason=0x%x, alg=0x%x)\n", |
| 2072 | __func__, skb_hnat_iface(skb), state->out->name, HNAT_SKB_CB2(skb)->magic, |
| 2073 | skb_hnat_entry(skb), skb_hnat_sport(skb), skb_hnat_reason(skb), |
| 2074 | skb_hnat_alg(skb)); |
| 2075 | |
| 2076 | return NF_DROP; |
| 2077 | } |
| 2078 | |
| 2079 | static unsigned int |
| 2080 | mtk_pong_hqos_handler(void *priv, struct sk_buff *skb, |
| 2081 | const struct nf_hook_state *state) |
| 2082 | { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2083 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); |
| 2084 | |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 2085 | if (qos_toggle && eth_hdr(skb)->h_proto == HQOS_MAGIC_TAG) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2086 | skb_hnat_entry(skb) = ntohs(veth->h_vlan_TCI) & 0x3fff; |
| 2087 | skb_hnat_reason(skb) = HIT_BIND_FORCE_TO_CPU; |
| 2088 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2089 | |
| 2090 | if (skb_hnat_iface(skb) == FOE_MAGIC_EXT) |
| 2091 | clr_from_extge(skb); |
| 2092 | |
| 2093 | /* packets from external devices -> xxx ,step 2, learning stage */ |
developer | af07fad | 2021-11-19 17:53:42 +0800 | [diff] [blame] | 2094 | if (do_ext2ge_fast_learn(state->in, skb) && (!qos_toggle || |
| 2095 | (qos_toggle && eth_hdr(skb)->h_proto != HQOS_MAGIC_TAG))) { |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2096 | if (!do_hnat_ext_to_ge2(skb, __func__)) |
| 2097 | return NF_STOLEN; |
| 2098 | goto drop; |
| 2099 | } |
| 2100 | |
| 2101 | /* packets form ge -> external device */ |
| 2102 | if (do_ge2ext_fast(state->in, skb)) { |
| 2103 | if (!do_hnat_ge_to_ext(skb, __func__)) |
| 2104 | return NF_STOLEN; |
| 2105 | goto drop; |
| 2106 | } |
| 2107 | |
| 2108 | return NF_ACCEPT; |
| 2109 | drop: |
| 2110 | printk_ratelimited(KERN_WARNING |
| 2111 | "%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x, sport=0x%x, reason=0x%x, alg=0x%x)\n", |
| 2112 | __func__, state->in->name, skb_hnat_iface(skb), |
| 2113 | HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb), |
| 2114 | skb_hnat_sport(skb), skb_hnat_reason(skb), |
| 2115 | skb_hnat_alg(skb)); |
| 2116 | |
| 2117 | return NF_DROP; |
| 2118 | } |
| 2119 | |
| 2120 | static unsigned int |
| 2121 | mtk_hnat_br_nf_local_out(void *priv, struct sk_buff *skb, |
| 2122 | const struct nf_hook_state *state) |
| 2123 | { |
| 2124 | post_routing_print(skb, state->in, state->out, __func__); |
| 2125 | |
| 2126 | if (!mtk_hnat_nf_post_routing(skb, state->out, 0, __func__)) |
| 2127 | return NF_ACCEPT; |
| 2128 | |
| 2129 | trace_printk( |
| 2130 | "%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x, sport=0x%x, reason=0x%x, alg=0x%x)\n", |
| 2131 | __func__, skb_hnat_iface(skb), state->out->name, HNAT_SKB_CB2(skb)->magic, |
| 2132 | skb_hnat_entry(skb), skb_hnat_sport(skb), skb_hnat_reason(skb), |
| 2133 | skb_hnat_alg(skb)); |
| 2134 | |
| 2135 | return NF_DROP; |
| 2136 | } |
| 2137 | |
| 2138 | static unsigned int |
| 2139 | mtk_hnat_ipv4_nf_local_out(void *priv, struct sk_buff *skb, |
| 2140 | const struct nf_hook_state *state) |
| 2141 | { |
| 2142 | struct sk_buff *new_skb; |
| 2143 | struct foe_entry *entry; |
| 2144 | struct iphdr *iph; |
| 2145 | |
| 2146 | if (!skb_hnat_is_hashed(skb)) |
| 2147 | return NF_ACCEPT; |
| 2148 | |
developer | 471f656 | 2021-05-10 20:48:34 +0800 | [diff] [blame] | 2149 | entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)]; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2150 | |
| 2151 | if (unlikely(skb_headroom(skb) < FOE_INFO_LEN)) { |
| 2152 | new_skb = skb_realloc_headroom(skb, FOE_INFO_LEN); |
| 2153 | if (!new_skb) { |
| 2154 | dev_info(hnat_priv->dev, "%s:drop\n", __func__); |
| 2155 | return NF_DROP; |
| 2156 | } |
| 2157 | dev_kfree_skb(skb); |
| 2158 | skb = new_skb; |
| 2159 | } |
| 2160 | |
| 2161 | /* Make the flow from local not be bound. */ |
| 2162 | iph = ip_hdr(skb); |
| 2163 | if (iph->protocol == IPPROTO_IPV6) { |
| 2164 | entry->udib1.pkt_type = IPV6_6RD; |
| 2165 | hnat_set_head_frags(state, skb, 0, hnat_set_alg); |
| 2166 | } else { |
| 2167 | hnat_set_head_frags(state, skb, 1, hnat_set_alg); |
| 2168 | } |
| 2169 | |
| 2170 | return NF_ACCEPT; |
| 2171 | } |
| 2172 | |
| 2173 | static unsigned int mtk_hnat_br_nf_forward(void *priv, |
| 2174 | struct sk_buff *skb, |
| 2175 | const struct nf_hook_state *state) |
| 2176 | { |
developer | 99506e5 | 2021-06-30 22:03:02 +0800 | [diff] [blame] | 2177 | if ((hnat_priv->data->version == MTK_HNAT_V2) && |
| 2178 | unlikely(IS_EXT(state->in) && IS_EXT(state->out))) |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2179 | hnat_set_head_frags(state, skb, 1, hnat_set_alg); |
| 2180 | |
| 2181 | return NF_ACCEPT; |
| 2182 | } |
| 2183 | |
| 2184 | static struct nf_hook_ops mtk_hnat_nf_ops[] __read_mostly = { |
| 2185 | { |
| 2186 | .hook = mtk_hnat_ipv4_nf_pre_routing, |
| 2187 | .pf = NFPROTO_IPV4, |
| 2188 | .hooknum = NF_INET_PRE_ROUTING, |
| 2189 | .priority = NF_IP_PRI_FIRST + 1, |
| 2190 | }, |
| 2191 | { |
| 2192 | .hook = mtk_hnat_ipv6_nf_pre_routing, |
| 2193 | .pf = NFPROTO_IPV6, |
| 2194 | .hooknum = NF_INET_PRE_ROUTING, |
| 2195 | .priority = NF_IP_PRI_FIRST + 1, |
| 2196 | }, |
| 2197 | { |
| 2198 | .hook = mtk_hnat_ipv6_nf_post_routing, |
| 2199 | .pf = NFPROTO_IPV6, |
| 2200 | .hooknum = NF_INET_POST_ROUTING, |
| 2201 | .priority = NF_IP_PRI_LAST, |
| 2202 | }, |
| 2203 | { |
| 2204 | .hook = mtk_hnat_ipv6_nf_local_out, |
| 2205 | .pf = NFPROTO_IPV6, |
| 2206 | .hooknum = NF_INET_LOCAL_OUT, |
| 2207 | .priority = NF_IP_PRI_LAST, |
| 2208 | }, |
| 2209 | { |
| 2210 | .hook = mtk_hnat_ipv4_nf_post_routing, |
| 2211 | .pf = NFPROTO_IPV4, |
| 2212 | .hooknum = NF_INET_POST_ROUTING, |
| 2213 | .priority = NF_IP_PRI_LAST, |
| 2214 | }, |
| 2215 | { |
| 2216 | .hook = mtk_hnat_ipv4_nf_local_out, |
| 2217 | .pf = NFPROTO_IPV4, |
| 2218 | .hooknum = NF_INET_LOCAL_OUT, |
| 2219 | .priority = NF_IP_PRI_LAST, |
| 2220 | }, |
| 2221 | { |
| 2222 | .hook = mtk_hnat_br_nf_local_in, |
| 2223 | .pf = NFPROTO_BRIDGE, |
| 2224 | .hooknum = NF_BR_LOCAL_IN, |
| 2225 | .priority = NF_BR_PRI_FIRST, |
| 2226 | }, |
| 2227 | { |
| 2228 | .hook = mtk_hnat_br_nf_local_out, |
| 2229 | .pf = NFPROTO_BRIDGE, |
| 2230 | .hooknum = NF_BR_LOCAL_OUT, |
| 2231 | .priority = NF_BR_PRI_LAST - 1, |
| 2232 | }, |
| 2233 | { |
| 2234 | .hook = mtk_pong_hqos_handler, |
| 2235 | .pf = NFPROTO_BRIDGE, |
| 2236 | .hooknum = NF_BR_PRE_ROUTING, |
developer | 2b85f65 | 2021-08-19 16:09:50 +0800 | [diff] [blame] | 2237 | .priority = NF_BR_PRI_FIRST + 1, |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2238 | }, |
| 2239 | }; |
| 2240 | |
| 2241 | int hnat_register_nf_hooks(void) |
| 2242 | { |
| 2243 | return nf_register_net_hooks(&init_net, mtk_hnat_nf_ops, ARRAY_SIZE(mtk_hnat_nf_ops)); |
| 2244 | } |
| 2245 | |
| 2246 | void hnat_unregister_nf_hooks(void) |
| 2247 | { |
| 2248 | nf_unregister_net_hooks(&init_net, mtk_hnat_nf_ops, ARRAY_SIZE(mtk_hnat_nf_ops)); |
| 2249 | } |
| 2250 | |
| 2251 | int whnat_adjust_nf_hooks(void) |
| 2252 | { |
| 2253 | struct nf_hook_ops *hook = mtk_hnat_nf_ops; |
| 2254 | unsigned int n = ARRAY_SIZE(mtk_hnat_nf_ops); |
| 2255 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2256 | while (n-- > 0) { |
| 2257 | if (hook[n].hook == mtk_hnat_br_nf_local_in) { |
| 2258 | hook[n].hooknum = NF_BR_PRE_ROUTING; |
developer | 2b85f65 | 2021-08-19 16:09:50 +0800 | [diff] [blame] | 2259 | hook[n].priority = NF_BR_PRI_FIRST + 1; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2260 | } else if (hook[n].hook == mtk_hnat_br_nf_local_out) { |
| 2261 | hook[n].hooknum = NF_BR_POST_ROUTING; |
| 2262 | } else if (hook[n].hook == mtk_pong_hqos_handler) { |
| 2263 | hook[n].hook = mtk_hnat_br_nf_forward; |
| 2264 | hook[n].hooknum = NF_BR_FORWARD; |
| 2265 | hook[n].priority = NF_BR_PRI_LAST - 1; |
| 2266 | } |
| 2267 | } |
| 2268 | |
| 2269 | return 0; |
| 2270 | } |
| 2271 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2272 | int mtk_hqos_ptype_cb(struct sk_buff *skb, struct net_device *dev, |
| 2273 | struct packet_type *pt, struct net_device *unused) |
| 2274 | { |
| 2275 | struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); |
| 2276 | |
| 2277 | skb_hnat_entry(skb) = ntohs(veth->h_vlan_TCI) & 0x3fff; |
| 2278 | skb_hnat_reason(skb) = HIT_BIND_FORCE_TO_CPU; |
| 2279 | |
| 2280 | do_hnat_ge_to_ext(skb, __func__); |
| 2281 | |
| 2282 | return 0; |
| 2283 | } |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 2284 | |