1 /* 2 Copyright (c) 2013-2017, The Linux Foundation. All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions are 6 met: 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above 10 copyright notice, this list of conditions and the following 11 disclaimer in the documentation and/or other materials provided 12 with the distribution. 13 * Neither the name of The Linux Foundation nor the names of its 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 /*! 30 @file 31 IPACM_Lan.h 32 33 @brief 34 This file implements the LAN iface definitions 35 36 @Author 37 Skylar Chang 38 39 */ 40 #ifndef IPACM_LAN_H 41 #define IPACM_LAN_H 42 43 #include <stdio.h> 44 #include <linux/msm_ipa.h> 45 46 #include "IPACM_CmdQueue.h" 47 #include "IPACM_Iface.h" 48 #include "IPACM_Routing.h" 49 #include "IPACM_Filtering.h" 50 #include "IPACM_Config.h" 51 #include "IPACM_Conntrack_NATApp.h" 52 53 #define IPA_WAN_DEFAULT_FILTER_RULE_HANDLES 1 54 #define IPA_PRIV_SUBNET_FILTER_RULE_HANDLES 3 55 #define IPA_NUM_ODU_ROUTE_RULES 2 56 #define MAX_WAN_UL_FILTER_RULES MAX_NUM_EXT_PROPS 57 #define NUM_IPV4_ICMP_FLT_RULE 1 58 #define NUM_IPV6_ICMP_FLT_RULE 1 59 60 /* ndc bandwidth ipatetherstats <ifaceIn> <ifaceOut> */ 61 /* <in->out_bytes> <in->out_pkts> <out->in_bytes> <out->in_pkts */ 62 63 #define PIPE_STATS "%s %s %lu %lu %lu %lu" 64 #define IPA_PIPE_STATS_FILE_NAME "/data/misc/ipa/tether_stats" 65 66 /* store each lan-iface unicast routing rule and its handler*/ 67 struct ipa_lan_rt_rule 68 { 69 ipa_ip_type ip; 70 uint32_t v4_addr; 71 uint32_t v4_addr_mask; 72 uint32_t v6_addr[4]; 73 uint32_t rt_rule_hdl[0]; 74 }; 75 76 /* Support multiple eth client */ 77 typedef struct _eth_client_rt_hdl 78 { 79 uint32_t eth_rt_rule_hdl_v4; 80 uint32_t eth_rt_rule_hdl_v6[IPV6_NUM_ADDR]; 81 uint32_t eth_rt_rule_hdl_v6_wan[IPV6_NUM_ADDR]; 82 }eth_client_rt_hdl; 83 84 typedef struct _ipa_eth_client 85 { 86 uint8_t mac[IPA_MAC_ADDR_SIZE]; 87 uint32_t v4_addr; 88 uint32_t v6_addr[IPV6_NUM_ADDR][4]; 89 uint32_t hdr_hdl_v4; 90 uint32_t hdr_hdl_v6; 91 bool route_rule_set_v4; 92 int route_rule_set_v6; 93 bool ipv4_set; 94 int ipv6_set; 95 bool ipv4_header_set; 96 bool ipv6_header_set; 97 eth_client_rt_hdl eth_rt_hdl[0]; /* depends on number of tx properties */ 98 }ipa_eth_client; 99 100 101 /* lan iface */ 102 class IPACM_Lan : public IPACM_Iface 103 { 104 public: 105 106 IPACM_Lan(int iface_index); 107 ~IPACM_Lan(); 108 109 /* store lan's wan-up filter rule handlers */ 110 uint32_t lan_wan_fl_rule_hdl[IPA_WAN_DEFAULT_FILTER_RULE_HANDLES]; 111 112 /* store private-subnet filter rule handlers */ 113 uint32_t private_fl_rule_hdl[IPA_MAX_PRIVATE_SUBNET_ENTRIES]; 114 115 /* LAN-iface's callback function */ 116 void event_callback(ipa_cm_event_id event, void *data); 117 118 virtual int handle_wan_up(ipa_ip_type ip_type); 119 120 /* configure filter rule for wan_up event*/ 121 virtual int handle_wan_up_ex(ipacm_ext_prop* ext_prop, ipa_ip_type iptype, uint8_t xlat_mux_id); 122 123 /* delete filter rule for wan_down event*/ 124 virtual int handle_wan_down(bool is_sta_mode); 125 126 /* delete filter rule for wan_down event*/ 127 virtual int handle_wan_down_v6(bool is_sta_mode); 128 129 /* configure private subnet filter rules*/ 130 virtual int handle_private_subnet(ipa_ip_type iptype); 131 132 /* handle new_address event*/ 133 int handle_addr_evt(ipacm_event_data_addr *data); 134 135 int handle_addr_evt_odu_bridge(ipacm_event_data_addr* data); 136 137 int handle_del_ipv6_addr(ipacm_event_data_all *data); 138 139 static bool odu_up; 140 141 /* install UL filter rule from Q6 */ 142 virtual int handle_uplink_filter_rule(ipacm_ext_prop* prop, ipa_ip_type iptype, uint8_t xlat_mux_id); 143 144 int handle_cradle_wan_mode_switch(bool is_wan_bridge_mode); 145 146 int install_ipv4_icmp_flt_rule(); 147 148 149 /* add header processing context and return handle to lan2lan controller */ 150 int eth_bridge_add_hdr_proc_ctx(ipa_hdr_l2_type peer_l2_hdr_type, uint32_t *hdl); 151 152 /* add routing rule and return handle to lan2lan controller */ 153 int eth_bridge_add_rt_rule(uint8_t *mac, char *rt_tbl_name, uint32_t hdr_proc_ctx_hdl, 154 ipa_hdr_l2_type peer_l2_hdr_type, ipa_ip_type iptype, uint32_t *rt_rule_hdl, int *rt_rule_count); 155 156 /* modify routing rule*/ 157 int eth_bridge_modify_rt_rule(uint8_t *mac, uint32_t hdr_proc_ctx_hdl, 158 ipa_hdr_l2_type peer_l2_hdr_type, ipa_ip_type iptype, uint32_t *rt_rule_hdl, int rt_rule_count); 159 160 /* add filtering rule and return handle to lan2lan controller */ 161 int eth_bridge_add_flt_rule(uint8_t *mac, uint32_t rt_tbl_hdl, ipa_ip_type iptype, uint32_t *flt_rule_hdl); 162 163 /* delete filtering rule */ 164 int eth_bridge_del_flt_rule(uint32_t flt_rule_hdl, ipa_ip_type iptype); 165 166 /* delete routing rule */ 167 int eth_bridge_del_rt_rule(uint32_t rt_rule_hdl, ipa_ip_type iptype); 168 169 /* delete header processing context */ 170 int eth_bridge_del_hdr_proc_ctx(uint32_t hdr_proc_ctx_hdl); 171 172 #ifdef FEATURE_L2TP 173 /* add l2tp rt rule for l2tp client */ 174 int add_l2tp_rt_rule(ipa_ip_type iptype, uint8_t *dst_mac, ipa_hdr_l2_type peer_l2_hdr_type, 175 uint32_t l2tp_session_id, uint32_t vlan_id, uint8_t *vlan_client_mac, uint32_t *vlan_iface_ipv6_addr, 176 uint32_t *vlan_client_ipv6_addr, uint32_t *first_pass_hdr_hdl, uint32_t *first_pass_hdr_proc_ctx_hdl, 177 uint32_t *second_pass_hdr_hdl, int *num_rt_hdl, uint32_t *first_pass_rt_rule_hdl, uint32_t *second_pass_rt_rule_hdl); 178 179 /* delete l2tp rt rule for l2tp client */ 180 int del_l2tp_rt_rule(ipa_ip_type iptype, uint32_t first_pass_hdr_hdl, uint32_t first_pass_hdr_proc_ctx_hdl, 181 uint32_t second_pass_hdr_hdl, int num_rt_hdl, uint32_t *first_pass_rt_rule_hdl, uint32_t *second_pass_rt_rule_hdl); 182 183 /* add l2tp rt rule for non l2tp client */ 184 int add_l2tp_rt_rule(ipa_ip_type iptype, uint8_t *dst_mac, uint32_t *hdr_proc_ctx_hdl, 185 int *num_rt_hdl, uint32_t *rt_rule_hdl); 186 187 /* delete l2tp rt rule for non l2tp client */ 188 int del_l2tp_rt_rule(ipa_ip_type iptype, int num_rt_hdl, uint32_t *rt_rule_hdl); 189 190 /* add l2tp flt rule on l2tp interface */ 191 int add_l2tp_flt_rule(uint8_t *dst_mac, uint32_t *flt_rule_hdl); 192 193 /* delete l2tp flt rule on l2tp interface */ 194 int del_l2tp_flt_rule(uint32_t flt_rule_hdl); 195 196 /* add l2tp flt rule on non l2tp interface */ 197 int add_l2tp_flt_rule(ipa_ip_type iptype, uint8_t *dst_mac, uint32_t *vlan_client_ipv6_addr, 198 uint32_t *first_pass_flt_rule_hdl, uint32_t *second_pass_flt_rule_hdl); 199 200 /* delete l2tp flt rule on non l2tp interface */ 201 int del_l2tp_flt_rule(ipa_ip_type iptype, uint32_t first_pass_flt_rule_hdl, uint32_t second_pass_flt_rule_hdl); 202 #endif 203 204 protected: 205 206 int each_client_rt_rule_count[IPA_IP_MAX]; 207 208 uint32_t eth_bridge_flt_rule_offset[IPA_IP_MAX]; 209 210 /* mac address has to be provided for client related events */ 211 void eth_bridge_post_event(ipa_cm_event_id evt, ipa_ip_type iptype, uint8_t *mac, 212 uint32_t *ipv6_addr, char *iface_name); 213 214 #ifdef FEATURE_L2TP 215 /* check if the event is associated with vlan interface */ 216 bool is_vlan_event(char *event_iface_name); 217 /* check if the event is associated with l2tp interface */ 218 bool is_l2tp_event(char *event_iface_name); 219 220 /* check if the IPv6 address is unique local address */ 221 bool is_unique_local_ipv6_addr(uint32_t *ipv6_addr); 222 223 #endif 224 virtual int add_dummy_private_subnet_flt_rule(ipa_ip_type iptype); 225 226 int handle_private_subnet_android(ipa_ip_type iptype); 227 228 int reset_to_dummy_flt_rule(ipa_ip_type iptype, uint32_t rule_hdl); 229 230 virtual int install_ipv6_prefix_flt_rule(uint32_t* prefix); 231 232 virtual void delete_ipv6_prefix_flt_rule(); 233 234 int install_ipv6_icmp_flt_rule(); 235 236 void post_del_self_evt(); 237 238 /* handle tethering stats */ 239 int handle_tethering_stats_event(ipa_get_data_stats_resp_msg_v01 *data); 240 241 /* handle tethering client */ 242 int handle_tethering_client(bool reset, ipacm_client_enum ipa_client); 243 244 /* add tcp syn flt rule */ 245 int add_tcp_syn_flt_rule(ipa_ip_type iptype); 246 247 /* add tcp syn flt rule for l2tp interface*/ 248 int add_tcp_syn_flt_rule_l2tp(ipa_ip_type inner_ip_type); 249 250 /* store ipv4 UL filter rule handlers from Q6*/ 251 uint32_t wan_ul_fl_rule_hdl_v4[MAX_WAN_UL_FILTER_RULES]; 252 253 /* store ipv6 UL filter rule handlers from Q6*/ 254 uint32_t wan_ul_fl_rule_hdl_v6[MAX_WAN_UL_FILTER_RULES]; 255 256 uint32_t ipv4_icmp_flt_rule_hdl[NUM_IPV4_ICMP_FLT_RULE]; 257 258 uint32_t ipv6_prefix_flt_rule_hdl[NUM_IPV6_PREFIX_FLT_RULE]; 259 uint32_t ipv6_icmp_flt_rule_hdl[NUM_IPV6_ICMP_FLT_RULE]; 260 261 int num_wan_ul_fl_rule_v4; 262 int num_wan_ul_fl_rule_v6; 263 264 bool is_active; 265 bool modem_ul_v4_set; 266 uint8_t v4_mux_id; 267 bool modem_ul_v6_set; 268 uint8_t v6_mux_id; 269 270 bool sta_ul_v4_set; 271 bool sta_ul_v6_set; 272 273 uint32_t if_ipv4_subnet; 274 275 uint32_t ipv6_prefix[2]; 276 277 bool is_upstream_set[IPA_IP_MAX]; 278 bool is_downstream_set[IPA_IP_MAX]; 279 _ipacm_offload_prefix prefix[IPA_IP_MAX]; 280 281 uint32_t tcp_syn_flt_rule_hdl[IPA_IP_MAX]; 282 283 private: 284 285 /* get hdr proc ctx type given source and destination l2 hdr type */ 286 ipa_hdr_proc_type eth_bridge_get_hdr_proc_type(ipa_hdr_l2_type t1, ipa_hdr_l2_type t2); 287 288 /* get partial header (header template of hdr proc ctx) */ 289 int eth_bridge_get_hdr_template_hdl(uint32_t* hdr_hdl); 290 291 292 /* dynamically allocate lan iface's unicast routing rule structure */ 293 294 bool is_mode_switch; /* indicate mode switch, need post internal up event */ 295 296 int eth_client_len; 297 298 ipa_eth_client *eth_client; 299 300 int header_name_count; 301 302 uint32_t num_eth_client; 303 304 NatApp *Nat_App; 305 306 int ipv6_set; 307 308 uint32_t ODU_hdr_hdl_v4, ODU_hdr_hdl_v6; 309 310 uint32_t *odu_route_rule_v4_hdl; 311 312 uint32_t *odu_route_rule_v6_hdl; 313 314 bool ipv4_header_set; 315 316 bool ipv6_header_set; 317 get_client_memptr(ipa_eth_client * param,int cnt)318 inline ipa_eth_client* get_client_memptr(ipa_eth_client *param, int cnt) 319 { 320 char *ret = ((char *)param) + (eth_client_len * cnt); 321 return (ipa_eth_client *)ret; 322 } 323 get_eth_client_index(uint8_t * mac_addr)324 inline int get_eth_client_index(uint8_t *mac_addr) 325 { 326 int cnt; 327 int num_eth_client_tmp = num_eth_client; 328 329 IPACMDBG_H("Passed MAC %02x:%02x:%02x:%02x:%02x:%02x\n", 330 mac_addr[0], mac_addr[1], mac_addr[2], 331 mac_addr[3], mac_addr[4], mac_addr[5]); 332 333 for(cnt = 0; cnt < num_eth_client_tmp; cnt++) 334 { 335 IPACMDBG_H("stored MAC %02x:%02x:%02x:%02x:%02x:%02x\n", 336 get_client_memptr(eth_client, cnt)->mac[0], 337 get_client_memptr(eth_client, cnt)->mac[1], 338 get_client_memptr(eth_client, cnt)->mac[2], 339 get_client_memptr(eth_client, cnt)->mac[3], 340 get_client_memptr(eth_client, cnt)->mac[4], 341 get_client_memptr(eth_client, cnt)->mac[5]); 342 343 if(memcmp(get_client_memptr(eth_client, cnt)->mac, 344 mac_addr, 345 sizeof(get_client_memptr(eth_client, cnt)->mac)) == 0) 346 { 347 IPACMDBG_H("Matched client index: %d\n", cnt); 348 return cnt; 349 } 350 } 351 352 return IPACM_INVALID_INDEX; 353 } 354 delete_eth_rtrules(int clt_indx,ipa_ip_type iptype)355 inline int delete_eth_rtrules(int clt_indx, ipa_ip_type iptype) 356 { 357 uint32_t tx_index; 358 uint32_t rt_hdl; 359 int num_v6; 360 361 if(iptype == IPA_IP_v4) 362 { 363 for(tx_index = 0; tx_index < iface_query->num_tx_props; tx_index++) 364 { 365 if((tx_prop->tx[tx_index].ip == IPA_IP_v4) && (get_client_memptr(eth_client, clt_indx)->route_rule_set_v4==true)) /* for ipv4 */ 366 { 367 IPACMDBG_H("Delete client index %d ipv4 RT-rules for tx:%d\n",clt_indx,tx_index); 368 rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_rt_rule_hdl_v4; 369 370 if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v4) == false) 371 { 372 return IPACM_FAILURE; 373 } 374 } 375 } /* end of for loop */ 376 377 /* clean the ipv4 RT rules for eth-client:clt_indx */ 378 if(get_client_memptr(eth_client, clt_indx)->route_rule_set_v4==true) /* for ipv4 */ 379 { 380 get_client_memptr(eth_client, clt_indx)->route_rule_set_v4 = false; 381 } 382 } 383 384 if(iptype == IPA_IP_v6) 385 { 386 for(tx_index = 0; tx_index < iface_query->num_tx_props; tx_index++) 387 { 388 if((tx_prop->tx[tx_index].ip == IPA_IP_v6) && (get_client_memptr(eth_client, clt_indx)->route_rule_set_v6 != 0)) /* for ipv6 */ 389 { 390 for(num_v6 =0;num_v6 < get_client_memptr(eth_client, clt_indx)->route_rule_set_v6;num_v6++) 391 { 392 IPACMDBG_H("Delete client index %d ipv6 RT-rules for %d-st ipv6 for tx:%d\n", clt_indx,num_v6,tx_index); 393 rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_rt_rule_hdl_v6[num_v6]; 394 if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v6) == false) 395 { 396 return IPACM_FAILURE; 397 } 398 399 rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_rt_rule_hdl_v6_wan[num_v6]; 400 if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v6) == false) 401 { 402 return IPACM_FAILURE; 403 } 404 } 405 } 406 } /* end of for loop */ 407 408 /* clean the ipv6 RT rules for eth-client:clt_indx */ 409 if(get_client_memptr(eth_client, clt_indx)->route_rule_set_v6 != 0) /* for ipv6 */ 410 { 411 get_client_memptr(eth_client, clt_indx)->route_rule_set_v6 = 0; 412 } 413 } 414 415 return IPACM_SUCCESS; 416 } 417 418 /* handle eth client initial, construct full headers (tx property) */ 419 int handle_eth_hdr_init(uint8_t *mac_addr); 420 421 /* handle eth client ip-address */ 422 int handle_eth_client_ipaddr(ipacm_event_data_all *data); 423 424 /* handle eth client routing rule*/ 425 int handle_eth_client_route_rule(uint8_t *mac_addr, ipa_ip_type iptype); 426 427 /*handle eth client del mode*/ 428 int handle_eth_client_down_evt(uint8_t *mac_addr); 429 430 /* handle odu client initial, construct full headers (tx property) */ 431 int handle_odu_hdr_init(uint8_t *mac_addr); 432 433 /* handle odu default route rule configuration */ 434 int handle_odu_route_add(); 435 436 /* handle odu default route rule deletion */ 437 int handle_odu_route_del(); 438 439 /*handle lan iface down event*/ 440 int handle_down_evt(); 441 442 /*handle reset usb-client rt-rules */ 443 int handle_lan_client_reset_rt(ipa_ip_type iptype); 444 }; 445 446 #endif /* IPACM_LAN_H */ 447