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      1 /*
      2  * Copyright (c) 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 #ifndef _IPACM_OFFLOAD_MANAGER_H_
     30 #define _IPACM_OFFLOAD_MANAGER_H_
     31 
     32 #include <list>
     33 #include <stdint.h>
     34 #include <IOffloadManager.h>
     35 #include "IPACM_Defs.h"
     36 
     37 using RET = ::IOffloadManager::RET;
     38 using Prefix = ::IOffloadManager::Prefix;
     39 using IP_FAM = ::IOffloadManager::IP_FAM;
     40 using L4Protocol = ::IOffloadManager::ConntrackTimeoutUpdater::L4Protocol;
     41 using natTimeoutUpdate_t = ::IOffloadManager::ConntrackTimeoutUpdater::natTimeoutUpdate_t;
     42 //using ipAddrPortPair_t = ::IOffloadManager::ConntrackTimeoutUpdater::ipAddrPortPair_t;
     43 //using UDP = ::IOffloadManager::ConntrackTimeoutUpdater::UDP;
     44 //using TCP = ::IOffloadManager::ConntrackTimeoutUpdater::TCP;
     45 
     46 #define MAX_EVENT_CACHE  10
     47 
     48 typedef struct _framework_event_cache
     49 {
     50 	/* IPACM interface name */
     51 	ipa_cm_event_id event;
     52 	char dev_name[IF_NAME_LEN];
     53 	Prefix prefix_cache;
     54 	Prefix prefix_cache_v6; //for setupstream use
     55 	bool valid;
     56 }framework_event_cache;
     57 
     58 class IPACM_OffloadManager : public IOffloadManager
     59 {
     60 
     61 public:
     62 
     63 	IPACM_OffloadManager();
     64 	static IPACM_OffloadManager* GetInstance();
     65 
     66 	virtual RET registerEventListener(IpaEventListener* /* listener */);
     67 	virtual RET unregisterEventListener(IpaEventListener* /* listener */);
     68 	virtual RET registerCtTimeoutUpdater(ConntrackTimeoutUpdater* /* cb */);
     69 	virtual RET unregisterCtTimeoutUpdater(ConntrackTimeoutUpdater* /* cb */);
     70 
     71 	virtual RET provideFd(int /* fd */, unsigned int /* group */);
     72 	virtual RET clearAllFds();
     73 	virtual bool isStaApSupported();
     74 
     75     /* ---------------------------- ROUTE ------------------------------- */
     76     virtual RET setLocalPrefixes(std::vector<Prefix> &/* prefixes */);
     77     virtual RET addDownstream(const char * /* downstream */,
     78             const Prefix & /* prefix */);
     79     virtual RET removeDownstream(const char * /* downstream */,
     80             const Prefix &/* prefix */);
     81 	virtual RET setUpstream(const char* /* iface */, const Prefix& /* v4Gw */, const Prefix& /* v6Gw */);
     82     virtual RET stopAllOffload();
     83 
     84     /* ------------------------- STATS/POLICY --------------------------- */
     85     virtual RET setQuota(const char * /* upstream */, uint64_t /* limit */);
     86     virtual RET getStats(const char * /* upstream */, bool /* reset */,
     87 		OffloadStatistics& /* ret */);
     88 
     89 	static IPACM_OffloadManager *pInstance; //sky
     90 
     91 	IpaEventListener *elrInstance;
     92 
     93 	ConntrackTimeoutUpdater *touInstance;
     94 
     95 	bool search_framwork_cache(char * interface_name);
     96 
     97 private:
     98 
     99 	std::list<std::string> valid_ifaces;
    100 
    101 	bool upstream_v4_up;
    102 
    103 	bool upstream_v6_up;
    104 
    105 	int default_gw_index;
    106 
    107 	int post_route_evt(enum ipa_ip_type iptype, int index, ipa_cm_event_id event, const Prefix &gw_addr);
    108 
    109 	int ipa_get_if_index(const char *if_name, int *if_index);
    110 
    111 	int resetTetherStats(const char *upstream_name);
    112 
    113 	static const char *DEVICE_NAME;
    114 
    115 	/* cache the add_downstream events if netdev is not ready */
    116 	framework_event_cache event_cache[MAX_EVENT_CACHE];
    117 
    118 	/* latest update cache entry */
    119 	int latest_cache_index;
    120 
    121 }; /* IPACM_OffloadManager */
    122 
    123 #endif /* _IPACM_OFFLOAD_MANAGER_H_ */
    124