1 /* 2 Copyright (c) 2013-2016, 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); 171 172 173 174 protected: 175 176 int each_client_rt_rule_count[IPA_IP_MAX]; 177 178 uint32_t eth_bridge_flt_rule_offset[IPA_IP_MAX]; 179 180 /* mac address has to be provided for client related events */ 181 void eth_bridge_post_event(ipa_cm_event_id evt, ipa_ip_type iptype, uint8_t *mac); 182 183 184 185 virtual int add_dummy_private_subnet_flt_rule(ipa_ip_type iptype); 186 187 int handle_private_subnet_android(ipa_ip_type iptype); 188 189 int reset_to_dummy_flt_rule(ipa_ip_type iptype, uint32_t rule_hdl); 190 191 virtual int install_ipv6_prefix_flt_rule(uint32_t* prefix); 192 193 virtual void delete_ipv6_prefix_flt_rule(); 194 195 int install_ipv6_icmp_flt_rule(); 196 197 void post_del_self_evt(); 198 199 /* handle tethering stats */ 200 int handle_tethering_stats_event(ipa_get_data_stats_resp_msg_v01 *data); 201 202 /* handle tethering client */ 203 int handle_tethering_client(bool reset, ipacm_client_enum ipa_client); 204 205 /* store ipv4 UL filter rule handlers from Q6*/ 206 uint32_t wan_ul_fl_rule_hdl_v4[MAX_WAN_UL_FILTER_RULES]; 207 208 /* store ipv6 UL filter rule handlers from Q6*/ 209 uint32_t wan_ul_fl_rule_hdl_v6[MAX_WAN_UL_FILTER_RULES]; 210 211 uint32_t ipv4_icmp_flt_rule_hdl[NUM_IPV4_ICMP_FLT_RULE]; 212 213 uint32_t ipv6_prefix_flt_rule_hdl[NUM_IPV6_PREFIX_FLT_RULE]; 214 uint32_t ipv6_icmp_flt_rule_hdl[NUM_IPV6_ICMP_FLT_RULE]; 215 216 int num_wan_ul_fl_rule_v4; 217 int num_wan_ul_fl_rule_v6; 218 219 bool is_active; 220 bool modem_ul_v4_set; 221 bool modem_ul_v6_set; 222 223 uint32_t if_ipv4_subnet; 224 225 uint32_t ipv6_prefix[2]; 226 227 bool is_upstream_set[IPA_IP_MAX]; 228 bool is_downstream_set[IPA_IP_MAX]; 229 _ipacm_offload_prefix prefix[IPA_IP_MAX]; 230 231 private: 232 233 /* get hdr proc ctx type given source and destination l2 hdr type */ 234 ipa_hdr_proc_type eth_bridge_get_hdr_proc_type(ipa_hdr_l2_type t1, ipa_hdr_l2_type t2); 235 236 /* get partial header (header template of hdr proc ctx) */ 237 int eth_bridge_get_hdr_template_hdl(uint32_t* hdr_hdl); 238 239 240 /* dynamically allocate lan iface's unicast routing rule structure */ 241 242 bool is_mode_switch; /* indicate mode switch, need post internal up event */ 243 244 int eth_client_len; 245 246 ipa_eth_client *eth_client; 247 248 int header_name_count; 249 250 uint32_t num_eth_client; 251 252 NatApp *Nat_App; 253 254 int ipv6_set; 255 256 uint32_t ODU_hdr_hdl_v4, ODU_hdr_hdl_v6; 257 258 uint32_t *odu_route_rule_v4_hdl; 259 260 uint32_t *odu_route_rule_v6_hdl; 261 262 bool ipv4_header_set; 263 264 bool ipv6_header_set; 265 get_client_memptr(ipa_eth_client * param,int cnt)266 inline ipa_eth_client* get_client_memptr(ipa_eth_client *param, int cnt) 267 { 268 char *ret = ((char *)param) + (eth_client_len * cnt); 269 return (ipa_eth_client *)ret; 270 } 271 get_eth_client_index(uint8_t * mac_addr)272 inline int get_eth_client_index(uint8_t *mac_addr) 273 { 274 int cnt; 275 int num_eth_client_tmp = num_eth_client; 276 277 IPACMDBG_H("Passed MAC %02x:%02x:%02x:%02x:%02x:%02x\n", 278 mac_addr[0], mac_addr[1], mac_addr[2], 279 mac_addr[3], mac_addr[4], mac_addr[5]); 280 281 for(cnt = 0; cnt < num_eth_client_tmp; cnt++) 282 { 283 IPACMDBG_H("stored MAC %02x:%02x:%02x:%02x:%02x:%02x\n", 284 get_client_memptr(eth_client, cnt)->mac[0], 285 get_client_memptr(eth_client, cnt)->mac[1], 286 get_client_memptr(eth_client, cnt)->mac[2], 287 get_client_memptr(eth_client, cnt)->mac[3], 288 get_client_memptr(eth_client, cnt)->mac[4], 289 get_client_memptr(eth_client, cnt)->mac[5]); 290 291 if(memcmp(get_client_memptr(eth_client, cnt)->mac, 292 mac_addr, 293 sizeof(get_client_memptr(eth_client, cnt)->mac)) == 0) 294 { 295 IPACMDBG_H("Matched client index: %d\n", cnt); 296 return cnt; 297 } 298 } 299 300 return IPACM_INVALID_INDEX; 301 } 302 delete_eth_rtrules(int clt_indx,ipa_ip_type iptype)303 inline int delete_eth_rtrules(int clt_indx, ipa_ip_type iptype) 304 { 305 uint32_t tx_index; 306 uint32_t rt_hdl; 307 int num_v6; 308 309 if(iptype == IPA_IP_v4) 310 { 311 for(tx_index = 0; tx_index < iface_query->num_tx_props; tx_index++) 312 { 313 if((tx_prop->tx[tx_index].ip == IPA_IP_v4) && (get_client_memptr(eth_client, clt_indx)->route_rule_set_v4==true)) /* for ipv4 */ 314 { 315 IPACMDBG_H("Delete client index %d ipv4 RT-rules for tx:%d\n",clt_indx,tx_index); 316 rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_rt_rule_hdl_v4; 317 318 if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v4) == false) 319 { 320 return IPACM_FAILURE; 321 } 322 } 323 } /* end of for loop */ 324 325 /* clean the ipv4 RT rules for eth-client:clt_indx */ 326 if(get_client_memptr(eth_client, clt_indx)->route_rule_set_v4==true) /* for ipv4 */ 327 { 328 get_client_memptr(eth_client, clt_indx)->route_rule_set_v4 = false; 329 } 330 } 331 332 if(iptype == IPA_IP_v6) 333 { 334 for(tx_index = 0; tx_index < iface_query->num_tx_props; tx_index++) 335 { 336 if((tx_prop->tx[tx_index].ip == IPA_IP_v6) && (get_client_memptr(eth_client, clt_indx)->route_rule_set_v6 != 0)) /* for ipv6 */ 337 { 338 for(num_v6 =0;num_v6 < get_client_memptr(eth_client, clt_indx)->route_rule_set_v6;num_v6++) 339 { 340 IPACMDBG_H("Delete client index %d ipv6 RT-rules for %d-st ipv6 for tx:%d\n", clt_indx,num_v6,tx_index); 341 rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_rt_rule_hdl_v6[num_v6]; 342 if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v6) == false) 343 { 344 return IPACM_FAILURE; 345 } 346 347 rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_rt_rule_hdl_v6_wan[num_v6]; 348 if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v6) == false) 349 { 350 return IPACM_FAILURE; 351 } 352 } 353 } 354 } /* end of for loop */ 355 356 /* clean the ipv6 RT rules for eth-client:clt_indx */ 357 if(get_client_memptr(eth_client, clt_indx)->route_rule_set_v6 != 0) /* for ipv6 */ 358 { 359 get_client_memptr(eth_client, clt_indx)->route_rule_set_v6 = 0; 360 } 361 } 362 363 return IPACM_SUCCESS; 364 } 365 366 /* handle eth client initial, construct full headers (tx property) */ 367 int handle_eth_hdr_init(uint8_t *mac_addr); 368 369 /* handle eth client ip-address */ 370 int handle_eth_client_ipaddr(ipacm_event_data_all *data); 371 372 /* handle eth client routing rule*/ 373 int handle_eth_client_route_rule(uint8_t *mac_addr, ipa_ip_type iptype); 374 375 /*handle eth client del mode*/ 376 int handle_eth_client_down_evt(uint8_t *mac_addr); 377 378 /* handle odu client initial, construct full headers (tx property) */ 379 int handle_odu_hdr_init(uint8_t *mac_addr); 380 381 /* handle odu default route rule configuration */ 382 int handle_odu_route_add(); 383 384 /* handle odu default route rule deletion */ 385 int handle_odu_route_del(); 386 387 /*handle lan iface down event*/ 388 int handle_down_evt(); 389 390 /*handle reset usb-client rt-rules */ 391 int handle_lan_client_reset_rt(ipa_ip_type iptype); 392 }; 393 394 #endif /* IPACM_LAN_H */ 395