1 /* 2 * Copyright 2003-2004, Waldemar Kornewald <Waldemar.Kornewald@web.de> 3 * Distributed under the terms of the MIT License. 4 */ 5 6 #ifndef PROTOCOL__H 7 #define PROTOCOL__H 8 9 #include <driver_settings.h> 10 11 #include <KPPPProtocol.h> 12 #include <Locker.h> 13 14 #include <arpa/inet.h> 15 16 17 #define IPCP_PROTOCOL 0x8021 18 #define IP_PROTOCOL 0x0021 19 20 21 typedef struct ip_item { 22 uint8 type; 23 uint8 length; 24 in_addr_t address; 25 } _PACKED ip_item; 26 27 28 enum ipcp_configure_item_codes { 29 IPCP_ADDRESSES = 1, 30 IPCP_COMPRESSION_PROTOCOL = 2, 31 IPCP_ADDRESS = 3, 32 IPCP_PRIMARY_DNS = 129, 33 IPCP_SECONDARY_DNS = 131 34 }; 35 36 37 typedef struct ipcp_requests { 38 // let peer suggest value if ours equals 0.0.0.0 39 in_addr_t address; 40 in_addr_t netmask; 41 // if equal 0.0.0.0 it will be chosen automatically 42 in_addr_t primaryDNS; 43 in_addr_t secondaryDNS; 44 } ipcp_requests; 45 46 47 // the values that were negotiated 48 typedef struct ipcp_configuration { 49 in_addr_t address; 50 in_addr_t primaryDNS; 51 in_addr_t secondaryDNS; 52 } ipcp_configuration; 53 54 55 extern struct protosw *gProto[]; 56 // defined in ipcp.cpp 57 58 59 class IPCP : public KPPPProtocol { 60 public: 61 IPCP(KPPPInterface& interface, driver_parameter *settings); 62 virtual ~IPCP(); 63 64 virtual void Uninit(); 65 66 ppp_state State() const 67 { return fState; } 68 69 virtual status_t StackControl(uint32 op, void *data); 70 71 virtual void ProfileChanged(); 72 73 virtual bool Up(); 74 virtual bool Down(); 75 76 virtual status_t Send(struct mbuf *packet, 77 uint16 protocolNumber = IPCP_PROTOCOL); 78 virtual status_t Receive(struct mbuf *packet, uint16 protocolNumber); 79 status_t ReceiveIPPacket(struct mbuf *packet, uint16 protocolNumber); 80 virtual void Pulse(); 81 82 private: 83 bool ParseSideRequests(const driver_parameter *requests, ppp_side side); 84 void UpdateAddresses(); 85 void RemoveRoutes(); 86 87 // for state machine 88 void NewState(ppp_state next); 89 uint8 NextID(); 90 // return the next id for IPCP packets 91 92 // events 93 void TOGoodEvent(); 94 void TOBadEvent(); 95 void RCREvent(struct mbuf *packet); 96 void RCRGoodEvent(struct mbuf *packet); 97 void RCRBadEvent(struct mbuf *nak, struct mbuf *reject); 98 void RCAEvent(struct mbuf *packet); 99 void RCNEvent(struct mbuf *packet); 100 void RTREvent(struct mbuf *packet); 101 void RTAEvent(struct mbuf *packet); 102 void RUCEvent(struct mbuf *packet); 103 void RXJBadEvent(struct mbuf *packet); 104 105 // actions 106 void IllegalEvent(ppp_event event); 107 void ReportUpFailedEvent(); 108 void ReportUpEvent(); 109 void ReportDownEvent(); 110 void InitializeRestartCount(); 111 void ZeroRestartCount(); 112 bool SendConfigureRequest(); 113 bool SendConfigureAck(struct mbuf *packet); 114 bool SendConfigureNak(struct mbuf *packet); 115 bool SendTerminateRequest(); 116 bool SendTerminateAck(struct mbuf *request = NULL); 117 bool SendCodeReject(struct mbuf *packet); 118 119 private: 120 ipcp_configuration fLocalConfiguration, fPeerConfiguration; 121 ipcp_requests fLocalRequests, fPeerRequests; 122 123 // default route 124 struct sockaddr_in fGateway; 125 rtentry *fDefaultRoute; 126 127 // used for local requests 128 bool fRequestPrimaryDNS, fRequestSecondaryDNS; 129 130 // for state machine 131 ppp_state fState; 132 vint32 fID; 133 134 // counters and timers 135 int32 fMaxRequest, fMaxTerminate, fMaxNak; 136 int32 fRequestCounter, fTerminateCounter, fNakCounter; 137 uint8 fRequestID, fTerminateID; 138 // the ID we used for the last configure/terminate request 139 bigtime_t fNextTimeout; 140 141 BLocker fLock; 142 }; 143 144 145 #endif 146