[1601] | 1 | #include <assert.h> |
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| 2 | #include <unistd.h> |
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| 3 | #include <signal.h> |
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| 4 | #include <stdio.h> |
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| 5 | #include <string.h> |
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| 6 | #include <stdlib.h> |
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| 7 | #include <pcap.h> |
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| 8 | #include "phy_logger.h" |
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| 9 | #include <sys/time.h> |
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| 10 | #include <netinet/in.h> |
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| 11 | |
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| 12 | //Global variables |
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| 13 | |
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| 14 | //Lookup table of numbers of ones in binary representations of each 8-bit value |
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| 15 | const unsigned char ones_in_chars[256] = {0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8}; |
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| 16 | |
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| 17 | //PCAP session handle (used by pcap Rx and Tx threads) |
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| 18 | pcap_t *pcap_handle; |
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| 19 | |
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| 20 | //Network device for PCAP (en0 = Ethernet; en5 = USB Ethernet) |
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| 21 | char* pcap_device; |
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| 22 | |
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| 23 | const char debug = 0; |
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| 24 | |
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| 25 | //Number of WARP nodes |
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| 26 | unsigned int numWARPnodes; |
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| 27 | |
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| 28 | unsigned int log_param0; |
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| 29 | unsigned int log_param1; |
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| 30 | unsigned int log_param2; |
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| 31 | unsigned int log_param3; |
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| 32 | unsigned short berLog_fileSuffix; |
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| 33 | |
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| 34 | //WARPnet structs |
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| 35 | warpnetEthernetPktHeader txEthPktHdr; |
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| 36 | warpnetControllerGroup groupStruct; |
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| 37 | |
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| 38 | unsigned char txEthPktBuf[MAX_ETHPKTSIZE]; |
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| 39 | |
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| 40 | //This "node's" ID (for talking to the warpnet server as if it were a node) |
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| 41 | unsigned char myID; |
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| 42 | |
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| 43 | //Array of log file handles, one per node |
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| 44 | FILE* log_fds[MAX_NUMWARPNODES]; |
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| 45 | |
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| 46 | //Time structs for scheduled node updates |
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| 47 | struct timeval currentTime; |
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| 48 | struct timezone theTimezone; |
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| 49 | |
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| 50 | void pcap_pktRx_handler(u_char *args, const struct pcap_pkthdr *header, const u_char *packet) { |
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| 51 | |
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| 52 | warpnetEthernetPktHeader* ethPktHdr; |
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| 53 | |
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| 54 | ethPktHdr = (warpnetEthernetPktHeader*)packet; |
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| 55 | |
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| 56 | if(ethPktHdr->ethType == WARPNET_ETHTYPE_SVR2NODE) |
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| 57 | ProcessServerMessage(args, header, packet); |
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| 58 | else if(ethPktHdr->ethType == WARPNET_ETHTYPE_NODE2COPROC) |
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| 59 | ProcessWARPnodeMessage(args, header, packet); |
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| 60 | else |
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| 61 | printf("pcap_pktRx_handler: Unknown ethertype: 0x%04x\n", ethPktHdr->ethType); |
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| 62 | |
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| 63 | return; |
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| 64 | } |
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| 65 | |
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| 66 | void ProcessServerMessage(u_char *args, const struct pcap_pkthdr *header, const u_char *packet) { |
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| 67 | |
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| 68 | void* rxPktPtr; |
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| 69 | |
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| 70 | int i, numRxStructs; |
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| 71 | unsigned char rxSeqNum, theStructID; |
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| 72 | |
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| 73 | //Typed pointers for interpreting received structs |
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| 74 | warpnetEthernetPktHeader* pktHeader; |
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| 75 | warpnetControllerGroup* groupStructCopy; |
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| 76 | warpnetCommand* commandStruct; |
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| 77 | warpnetLogParams* logParams; |
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| 78 | |
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| 79 | unsigned short berLog_fileSuffix_new; |
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| 80 | |
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| 81 | //Local ACK struct, used to send responses to the server |
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| 82 | warpnetAck ackStruct; |
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| 83 | |
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| 84 | //Interpret the received bytes as an Ethernet packet |
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| 85 | pktHeader = (warpnetEthernetPktHeader*)packet; |
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| 86 | |
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| 87 | if((pktHeader->ethType) != WARPNET_ETHTYPE_SVR2NODE) { |
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| 88 | //Should never happen; all management packets are type WARPNET_ETHTYPE_SVR2NODE |
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| 89 | return; |
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| 90 | } |
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| 91 | |
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| 92 | numRxStructs = pktHeader->numStructs; |
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| 93 | rxSeqNum = pktHeader->seqNum; |
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| 94 | |
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| 95 | //Initialize the rx pointer to the first byte past the Ethernet header |
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| 96 | rxPktPtr = (void*)(packet + sizeof(warpnetEthernetPktHeader)); |
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| 97 | |
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| 98 | //Iterate over each pair of warpnetControllerGroup / otherStruct in the server message |
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| 99 | for(i=0; i<numRxStructs; i++) { |
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| 100 | |
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| 101 | if( ( ((int)rxPktPtr) - ((int)packet) ) >= header->len) { |
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| 102 | printf("Error! Mgmt pktLength too short for numStructs\n"); |
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| 103 | return; |
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| 104 | } |
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| 105 | |
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| 106 | //Alternate structs (starting with the first) are always warpnetControllerGroup |
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| 107 | groupStructCopy = (warpnetControllerGroup*)rxPktPtr; |
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| 108 | rxPktPtr += sizeof(warpnetControllerGroup); |
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| 109 | |
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| 110 | //Extract the first byte of the actual struct and interpret as the structID |
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| 111 | theStructID = *( (unsigned char *)rxPktPtr ); |
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| 112 | //xil_printf("Mgmt Pkt: StructID=0x%x\r\n", theStructID); |
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| 113 | |
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| 114 | switch(theStructID) |
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| 115 | { |
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| 116 | case STRUCTID_COMMAND: |
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| 117 | commandStruct = (warpnetCommand*)rxPktPtr; |
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| 118 | rxPktPtr += sizeof(warpnetCommand); |
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| 119 | |
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| 120 | if((commandStruct->nodeID) == myID) { |
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| 121 | |
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| 122 | //Send an ACK struct back to the server |
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| 123 | ackStruct.structID = STRUCTID_COMMAND_ACK; |
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| 124 | ackStruct.nodeID = myID; |
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| 125 | ackStruct.cmdID = commandStruct->cmdID; |
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| 126 | |
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| 127 | SendStructToServer(groupStructCopy, &ackStruct); |
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| 128 | |
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| 129 | //Process the received struct |
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| 130 | //processCommand(commandStruct); |
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| 131 | } |
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| 132 | break; |
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| 133 | case STRUCTID_LOGPARAMS: |
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| 134 | logParams = (warpnetLogParams*)rxPktPtr; |
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| 135 | rxPktPtr += sizeof(warpnetLogParams); |
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| 136 | |
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| 137 | if((logParams->nodeID) == myID) { |
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| 138 | |
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| 139 | berLog_fileSuffix_new = htons(logParams->fileSuffix); //Endian swap, since it's used internally, not just written to the file |
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| 140 | |
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| 141 | log_param0 = logParams->param0; |
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| 142 | log_param1 = logParams->param1; |
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| 143 | log_param2 = logParams->param2; |
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| 144 | log_param3 = logParams->param3; |
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| 145 | |
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| 146 | if(berLog_fileSuffix_new != berLog_fileSuffix) { |
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| 147 | berLog_fileSuffix = berLog_fileSuffix_new; |
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| 148 | SetupLogFiles(); |
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| 149 | } |
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| 150 | |
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| 151 | if(debug > 1) printf("Got LOGPARAMS: 0=%d, 1=%d, 2=%d, 3=%d\n", htonl(log_param0), htonl(log_param1), htonl(log_param2), htonl(log_param3)); |
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| 152 | |
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| 153 | //Send an ACK struct back to the server |
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| 154 | ackStruct.structID = STRUCTID_LOGPARAMS_ACK; |
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| 155 | ackStruct.nodeID = myID; |
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| 156 | ackStruct.cmdID = 0; |
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| 157 | |
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| 158 | SendStructToServer(groupStructCopy, &ackStruct); |
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| 159 | } |
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| 160 | break; |
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| 161 | |
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| 162 | default: |
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| 163 | //Unrecognized structID; do nothing |
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| 164 | //printf("Unknown structID: 0x%x\n", theStructID); |
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| 165 | break; |
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| 166 | }//END switch(theStructID) |
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| 167 | |
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| 168 | |
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| 169 | }//END for(0...numStructs-1) |
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| 170 | |
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| 171 | return; |
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| 172 | } |
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| 173 | |
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| 174 | void ProcessWARPnodeMessage(u_char *args, const struct pcap_pkthdr *header, const u_char *packet) |
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| 175 | { |
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| 176 | //printf("ProcessWARPnodeMessage: Got a WARP node update\n"); |
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| 177 | |
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| 178 | //Packets from the WARP node must have this sturcture; indicies are bytes: |
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| 179 | // warpnetEthernetPktHeader struct first: |
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| 180 | // 0-5: Source MAC address (last nibble assumed to be nodeID) |
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| 181 | // 6-11: Destination MAC address |
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| 182 | // 12-13: Ethertype = WARPNET_ETHTYPE_NODE2BER |
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| 183 | // 14-15: Number of bytes in full packet, including this header |
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| 184 | // 16: Number of WARPNet structs in packet |
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| 185 | // 17: seqNum (for what?) |
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| 186 | // 18:... beginning of warpnet structs |
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| 187 | |
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| 188 | void* rxPktPtr; |
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| 189 | |
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| 190 | int i, j, numRxStructs; |
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| 191 | unsigned char theStructID; |
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| 192 | |
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| 193 | unsigned char inner_structID; |
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| 194 | unsigned short inner_numStructs; |
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| 195 | unsigned int concat_trialIndex; |
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| 196 | |
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| 197 | //Typed pointers for interpreting received structs |
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| 198 | warpnetEthernetPktHeader* pktHeader; |
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| 199 | warpnetConcatStruct* ptr_concatStruct; |
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| 200 | warpnetRTObserve* ptr_rtObserve; |
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| 201 | warpnetCommand* ptr_commandStruct; |
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| 202 | warpnetRxPHYdump* ptr_rxPHYdumpStruct; |
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| 203 | |
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| 204 | unsigned char ethpkt_nodeID; |
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| 205 | unsigned int ethpkt_len; |
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| 206 | |
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| 207 | unsigned short tmp_relNode; |
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| 208 | |
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| 209 | if( (header->len) < (sizeof(warpnetEthernetPktHeader))) { |
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| 210 | printf("ProcessWARPnodeMessage: pcap captured too short a packet! (%d bytes)\n", (header->len)); |
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| 211 | return; |
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| 212 | } |
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| 213 | |
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| 214 | //Intrepret the received packet's header |
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| 215 | pktHeader = (warpnetEthernetPktHeader*)packet; |
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| 216 | ethpkt_len = htons(pktHeader->pktLength); |
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| 217 | ethpkt_nodeID = ((pktHeader->srcAddr[5]) & 0xF); |
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| 218 | |
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| 219 | //Sanity-check the received Ethernet header |
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| 220 | if( (header->len) < ethpkt_len) { |
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| 221 | printf("ProcessWARPnodeMessage: pcap captured too short a packet! (%d bytes captured, ethPktHdr.len claimed %d)\n", (header->len), ethpkt_len); |
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| 222 | return; |
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| 223 | } |
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| 224 | |
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| 225 | if((ethpkt_nodeID >= numWARPnodes)) { |
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| 226 | printf("ProcessWARPnodeMessage: invalid nodeID! nodeID=%d\n", ethpkt_nodeID); |
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| 227 | return; |
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| 228 | } |
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| 229 | |
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| 230 | if((pktHeader->ethType) != WARPNET_ETHTYPE_NODE2COPROC) { |
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| 231 | //Should never happen; pcap should only accept COPROC packets |
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| 232 | return; |
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| 233 | } |
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| 234 | |
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| 235 | numRxStructs = pktHeader->numStructs; |
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| 236 | |
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| 237 | //Initialize the rx pointer to the first byte past the Ethernet header |
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| 238 | rxPktPtr = (void*)(packet + sizeof(warpnetEthernetPktHeader)); |
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| 239 | |
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| 240 | //Iterate over each pair of warpnetControllerGroup / otherStruct in the server message |
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| 241 | for(i=0; i<numRxStructs; i++) { |
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| 242 | |
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| 243 | if( ( ((int)rxPktPtr) - ((int)packet) ) >= (header->len)) { |
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| 244 | printf("Error! pktLength too short for numStructs\r\n"); |
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| 245 | return; |
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| 246 | } |
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| 247 | |
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| 248 | //Extract the first byte of the actual struct and interpret as the structID |
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| 249 | theStructID = *( (unsigned char *)rxPktPtr ); |
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| 250 | |
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| 251 | switch(theStructID) |
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| 252 | { |
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| 253 | case STRUCTID_COMMAND: |
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| 254 | ptr_commandStruct = (warpnetCommand*)rxPktPtr; |
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| 255 | rxPktPtr += sizeof(warpnetCommand); |
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| 256 | |
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| 257 | if((ptr_commandStruct->nodeID) == myID) { |
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| 258 | //FIXME: do something with the commandStruct |
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| 259 | } |
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| 260 | break; |
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| 261 | case STRUCTID_RXPHYDUMP: |
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| 262 | ptr_rxPHYdumpStruct = (warpnetRxPHYdump*)rxPktPtr; |
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| 263 | rxPktPtr += sizeof(warpnetRxPHYdump); |
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| 264 | |
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| 265 | if( (ptr_rxPHYdumpStruct->nodeID) < numWARPnodes) { |
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| 266 | LogRxPHYDump(ptr_rxPHYdumpStruct, log_fds[(ptr_rxPHYdumpStruct->nodeID)]); |
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| 267 | } |
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| 268 | |
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| 269 | break; |
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| 270 | case STRUCTID_CONCAT: |
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| 271 | ptr_concatStruct = (warpnetConcatStruct*)rxPktPtr; |
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| 272 | concat_trialIndex = htonl(ptr_concatStruct->trialIndex); |
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| 273 | inner_numStructs = htons(ptr_concatStruct->numStructs); |
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| 274 | |
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| 275 | rxPktPtr = &(ptr_concatStruct->innerStructs); |
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| 276 | |
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| 277 | if(debug > 1) printf("Got ConcatStruct with %d inner structs, trial index %d\n", inner_numStructs, concat_trialIndex); |
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| 278 | |
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| 279 | for(j=0; j<inner_numStructs; j++) { |
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| 280 | inner_structID = *( (unsigned char*)rxPktPtr); |
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| 281 | |
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| 282 | if(inner_structID == STRUCTID_RTOBSERVE) { |
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| 283 | ptr_rtObserve = (warpnetRTObserve*)rxPktPtr; |
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| 284 | |
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| 285 | tmp_relNode = (ptr_rtObserve->relNode); |
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| 286 | |
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| 287 | if(log_fds[ethpkt_nodeID] != NULL) { |
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| 288 | LogRTobserve(ptr_rtObserve, concat_trialIndex, log_fds[ethpkt_nodeID]); |
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| 289 | } |
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| 290 | else { |
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| 291 | printf("Error! File closed for node %d\n", ethpkt_nodeID); |
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| 292 | return; |
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| 293 | } |
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| 294 | rxPktPtr += sizeof(warpnetRTObserve); |
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| 295 | } |
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| 296 | else { |
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| 297 | printf("\tUnknown inner_structID: 0x%x\n", inner_structID); |
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| 298 | break; |
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| 299 | } |
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| 300 | }//for concatStruct.numStructs |
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| 301 | |
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| 302 | fflush(log_fds[ethpkt_nodeID]); |
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| 303 | break;//case STRUCTID_CONCAT: |
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| 304 | } |
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| 305 | }//for ethPkt.numStructs |
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| 306 | |
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| 307 | return; |
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| 308 | } |
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| 309 | |
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| 310 | void SendStructToServer(warpnetControllerGroup* theGroupStruct, void *theStruct) { |
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| 311 | |
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| 312 | unsigned char structID; |
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| 313 | void* structPtr; |
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| 314 | |
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| 315 | int structLen = 0; |
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| 316 | int rv; |
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| 317 | |
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| 318 | structPtr = theStruct; |
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| 319 | |
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| 320 | structID = *( (unsigned char *)theStruct); |
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| 321 | void* txPktPtr; |
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| 322 | |
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| 323 | switch(structID) |
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| 324 | { |
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| 325 | case STRUCTID_LOGPARAMS_ACK: |
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| 326 | structLen = sizeof(warpnetAck); |
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| 327 | structPtr = theStruct; |
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| 328 | break; |
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| 329 | |
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| 330 | default: |
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| 331 | printf("SendStructToServer: Unknown structID! (0x%x)\n", structID); |
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| 332 | break; |
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| 333 | } |
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| 334 | |
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| 335 | if(structLen > 0) |
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| 336 | { |
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| 337 | txEthPktHdr.ethType = WARPNET_ETHTYPE_NODE2SVR; |
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| 338 | txEthPktHdr.pktLength = sizeof(warpnetEthernetPktHeader) + sizeof(warpnetControllerGroup) + structLen; |
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| 339 | txEthPktHdr.numStructs = 1; |
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| 340 | txEthPktHdr.seqNum = 0; |
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| 341 | |
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| 342 | txPktPtr = &txEthPktBuf; |
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| 343 | memcpy(txPktPtr, &txEthPktHdr, sizeof(warpnetEthernetPktHeader)); |
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| 344 | memcpy(txPktPtr+sizeof(warpnetEthernetPktHeader), theGroupStruct, sizeof(warpnetControllerGroup)); |
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| 345 | memcpy(txPktPtr+sizeof(warpnetEthernetPktHeader)+sizeof(warpnetControllerGroup), structPtr, structLen); |
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| 346 | |
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| 347 | rv = pcap_inject(pcap_handle, (void *)txPktPtr, (txEthPktHdr.pktLength) ); |
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| 348 | |
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| 349 | if(rv < 0){ |
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| 350 | pcap_perror(pcap_handle, ""); |
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| 351 | printf("Error on pcap_inject!\n"); |
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| 352 | } |
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| 353 | } |
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| 354 | |
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| 355 | return; |
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| 356 | } |
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| 357 | |
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| 358 | int LogRxPHYDump(warpnetRxPHYdump* ptr_rxPHYdumpStruct, FILE* logFile) { |
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| 359 | |
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| 360 | int writeLen, rv; |
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| 361 | |
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| 362 | //Write the server-provided params first |
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| 363 | rv = fwrite((void *)&log_param0, sizeof(unsigned int), 1, logFile); if(rv<1) {printf("Error writing log! (0; write %d)\n", rv); return -1;} |
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| 364 | rv = fwrite((void *)&log_param1, sizeof(unsigned int), 1, logFile); if(rv<1) {printf("Error writing log! (1; write %d)\n", rv); return -1;} |
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| 365 | rv = fwrite((void *)&log_param2, sizeof(unsigned int), 1, logFile); if(rv<1) {printf("Error writing log! (2; write %d)\n", rv); return -1;} |
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| 366 | rv = fwrite((void *)&log_param3, sizeof(unsigned int), 1, logFile); if(rv<1) {printf("Error writing log! (3; write %d)\n", rv); return -1;} |
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| 367 | |
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| 368 | writeLen = sizeof(warpnetRxPHYdump); |
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| 369 | |
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| 370 | if( (ptr_rxPHYdumpStruct->includedData) & RXPHYDUMP_INCLUDE_EVMPERSC) { |
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| 371 | writeLen += RXPHYDUMP_SIZE_EVMPERSC; |
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| 372 | } |
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| 373 | if( (ptr_rxPHYdumpStruct->includedData) & RXPHYDUMP_INCLUDE_EVMPERSYM) { |
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| 374 | writeLen += RXPHYDUMP_SIZE_EVMPERSYM; |
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| 375 | } |
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| 376 | if( (ptr_rxPHYdumpStruct->includedData) & RXPHYDUMP_INCLUDE_CHANESTAA) { |
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| 377 | writeLen += RXPHYDUMP_SIZE_CHANEST; |
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| 378 | } |
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| 379 | if( (ptr_rxPHYdumpStruct->includedData) & RXPHYDUMP_INCLUDE_CHANESTBA) { |
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| 380 | writeLen += RXPHYDUMP_SIZE_CHANEST; |
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| 381 | } |
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| 382 | |
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| 383 | rv = fwrite((void *)ptr_rxPHYdumpStruct, sizeof(char), writeLen, logFile); |
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| 384 | if(rv != writeLen) { |
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| 385 | printf("LogRxPHYDump: Error writing log file; tried to write %d bytes; fwrite returned %d\n", writeLen, rv); |
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| 386 | return -1; |
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| 387 | } |
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| 388 | |
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| 389 | fflush(logFile); |
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| 390 | return 0; |
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| 391 | } |
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| 392 | |
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| 393 | int LogRTobserve(warpnetRTObserve* ptr_rtObserve, unsigned int trialIndex, FILE* logFile) { |
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| 394 | |
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| 395 | //trialIndex, sequenceNumber, pktType, srcNode, dstNode, relayNode, phystatus, macstate, RSSI, gain, local timestamp High, local timestamp Low, numPacketDet |
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| 396 | fprintf(logFile, "%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u\r\n",\ |
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| 397 | trialIndex, \ |
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| 398 | htons(ptr_rtObserve->sequenceNumber), \ |
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| 399 | (ptr_rtObserve->srcNode), \ |
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| 400 | (ptr_rtObserve->destNode), \ |
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| 401 | (ptr_rtObserve->relNode), \ |
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| 402 | (ptr_rtObserve->pktType), \ |
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| 403 | (ptr_rtObserve->phystatus), \ |
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| 404 | (ptr_rtObserve->macstate), \ |
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| 405 | htons(ptr_rtObserve->rssi), \ |
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| 406 | htons(ptr_rtObserve->gain), \ |
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| 407 | htons(ptr_rtObserve->timeStampHigh), \ |
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| 408 | htonl(ptr_rtObserve->timeStampLow), \ |
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| 409 | htonl(ptr_rtObserve->packetDetCount) \ |
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| 410 | ); |
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| 411 | return 0; |
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| 412 | } |
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| 413 | |
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| 414 | //This code is based on the excellent libpcap examples at http://www.tcpdump.org/pcap.htm |
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| 415 | int SetupPCAP() |
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| 416 | { |
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| 417 | char errbuf[PCAP_ERRBUF_SIZE]; // Error string |
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| 418 | struct bpf_program fp; // The compiled filter |
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| 419 | // char filter_exp[19]; |
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| 420 | char filter_exp[43]; |
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| 421 | bpf_u_int32 mask; // Our netmask |
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| 422 | bpf_u_int32 net; // Our IP |
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| 423 | |
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| 424 | fprintf(stdout, "Attaching to device %s\n", pcap_device); |
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| 425 | |
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| 426 | // sprintf((char *)&filter_exp, "ether proto 0x%04x", WARPNET_ETHTYPE_NODE2COPROC); |
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| 427 | sprintf((char *)&filter_exp, "(ether proto 0x%04x or ether proto 0x%04x)", WARPNET_ETHTYPE_NODE2COPROC, WARPNET_ETHTYPE_SVR2NODE); |
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| 428 | |
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| 429 | //Lookup properties for the network device |
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| 430 | // pcap_device is a global variable, defined either by default or as a cmd line argument |
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| 431 | if (pcap_lookupnet(pcap_device, &net, &mask, errbuf) == -1) |
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| 432 | { |
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| 433 | fprintf(stderr, "PCAP: Couldn't get netmask for device %s: %s\n", pcap_device, errbuf); |
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| 434 | net = 0; |
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| 435 | mask = 0; |
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| 436 | } |
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| 437 | |
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| 438 | // Open the session in promiscuous mode with a big enough buffer |
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| 439 | pcap_handle = pcap_open_live(pcap_device, 65535, 1, 100, errbuf); |
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| 440 | |
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| 441 | if (pcap_handle == NULL) |
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| 442 | { |
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| 443 | fprintf(stderr, "PCAP: Couldn't open device %s: %s\n", pcap_device, errbuf); |
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| 444 | return -2; |
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| 445 | } |
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| 446 | |
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| 447 | // Compile and apply the filter |
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| 448 | if (pcap_compile(pcap_handle, &fp, filter_exp, 0, net) == -1) |
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| 449 | { |
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| 450 | fprintf(stderr, "PCAP: Couldn't parse filter %s: %s\n", filter_exp, pcap_geterr(pcap_handle)); |
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| 451 | return -2; |
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| 452 | } |
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| 453 | |
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| 454 | if (pcap_setfilter(pcap_handle, &fp) == -1) |
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| 455 | { |
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| 456 | fprintf(stderr, "PCAP: Couldn't install filter %s: %s\n", filter_exp, pcap_geterr(pcap_handle)); |
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| 457 | return -2; |
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| 458 | } |
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| 459 | |
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| 460 | fprintf(stdout, "Applied filter '%s'\n", filter_exp); |
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| 461 | |
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| 462 | //Loop forever on received Ethernet frames |
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| 463 | pcap_loop(pcap_handle, -1, (pcap_handler)pcap_pktRx_handler, NULL); |
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| 464 | |
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| 465 | return 0; |
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| 466 | } |
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| 467 | |
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| 468 | int SetupLogFiles() { |
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| 469 | int i; |
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| 470 | char fileName[50]; |
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| 471 | |
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| 472 | for(i=0; i<numWARPnodes; i++) { |
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| 473 | sprintf(fileName, "logs/phylog_%04d_n%d.log", berLog_fileSuffix, i); |
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| 474 | |
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| 475 | if(log_fds[i] != NULL) |
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| 476 | fclose(log_fds[i]); |
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| 477 | |
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| 478 | log_fds[i] = fopen(fileName, "w"); |
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| 479 | |
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| 480 | if(log_fds[i] == NULL) { |
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| 481 | printf("Error creating log file\r\n"); |
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| 482 | return -1; |
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| 483 | } |
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| 484 | } |
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| 485 | |
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| 486 | return 0; |
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| 487 | }; |
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| 488 | |
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| 489 | int main(int argc, char *argv[]) |
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| 490 | { |
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| 491 | printf("Starting WARP PHY Logger\n"); |
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| 492 | |
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| 493 | int i; |
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| 494 | //Default number of WARP nodes; can be overridden on the command line |
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| 495 | numWARPnodes = 3; |
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| 496 | |
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| 497 | log_param0 = 0; |
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| 498 | log_param1 = 0; |
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| 499 | log_param2 = 0; |
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| 500 | log_param3 = 0; |
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| 501 | |
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| 502 | berLog_fileSuffix = 0; |
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| 503 | |
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| 504 | //Use the next-largest ID, after all the actual nodes |
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| 505 | myID = 98; |
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| 506 | |
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| 507 | groupStruct.controllerID = 0; |
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| 508 | groupStruct.controllerGrp = 0; |
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| 509 | groupStruct.access = 1; |
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| 510 | groupStruct.reserved0 = 0xA5; |
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| 511 | |
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| 512 | txEthPktHdr.ethType = WARPNET_ETHTYPE_NODE2SVR; |
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| 513 | txEthPktHdr.srcAddr[0]=0x00; |
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| 514 | txEthPktHdr.srcAddr[1]=0x50; |
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| 515 | txEthPktHdr.srcAddr[2]=0xC2; |
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| 516 | txEthPktHdr.srcAddr[3]=0x63; |
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| 517 | txEthPktHdr.srcAddr[4]=0x3F; |
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| 518 | txEthPktHdr.srcAddr[5]=0x80+myID; |
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| 519 | |
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| 520 | |
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| 521 | //Linux RiceNet2 NIC |
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| 522 | txEthPktHdr.dstAddr[0]=0x00; |
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| 523 | txEthPktHdr.dstAddr[1]=0x50; |
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| 524 | txEthPktHdr.dstAddr[2]=0xC2; |
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| 525 | txEthPktHdr.dstAddr[3]=0x63; |
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| 526 | txEthPktHdr.dstAddr[4]=0x3F; |
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| 527 | txEthPktHdr.dstAddr[5]=0xFC; |
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| 528 | |
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| 529 | /* |
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| 530 | //Macbook #1 |
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| 531 | txEthPktHdr.dstAddr[0]=0x00; |
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| 532 | txEthPktHdr.dstAddr[1]=0x17; |
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| 533 | txEthPktHdr.dstAddr[2]=0xf2; |
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| 534 | txEthPktHdr.dstAddr[3]=0xdb; |
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| 535 | txEthPktHdr.dstAddr[4]=0x05; |
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| 536 | txEthPktHdr.dstAddr[5]=0x07; |
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| 537 | */ |
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| 538 | |
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| 539 | if(argc == 1) |
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| 540 | { |
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| 541 | //Set sensible defaults if the user forgets to provide arguments |
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| 542 | pcap_device = "eth1"; |
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| 543 | printf("No cmd line params; Assuming pcapDevice: %s, numNodes: %d\n", pcap_device, numWARPnodes); |
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| 544 | } |
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| 545 | else if(argc == 2) |
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| 546 | { |
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| 547 | //User provided an Ethernet interface to use |
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| 548 | pcap_device = argv[1]; |
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| 549 | printf("Cmd line params: pcapDevice: %s\nAssuming numNodes: %d\n", pcap_device, numWARPnodes); |
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| 550 | } |
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| 551 | else if(argc == 3) |
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| 552 | { |
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| 553 | //User provided an Ethernet interface to use and number of WARP nodes |
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| 554 | pcap_device = argv[1]; |
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| 555 | numWARPnodes = atoi((char *)argv[2]); |
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| 556 | printf("Cmd line params: pcapDevice: %s, numNodes: %d\n", pcap_device, numWARPnodes); |
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| 557 | } |
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| 558 | else |
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| 559 | { |
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| 560 | //User didn't provide good arguments; print usage and quit |
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| 561 | printf("Usage: %s <Ethernet device> <number of WARP nodes>\nExamples:\n\t%s (defaults to interface eth1)\n\t%s eth1 3 (use interface eth1, 3 WARP nodes)", argv[0], argv[0], argv[0]); |
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| 562 | return -1; |
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| 563 | } |
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| 564 | |
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| 565 | //Null out the file descriptors to start out |
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| 566 | for(i=0; i<numWARPnodes; i++) { |
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| 567 | log_fds[i] = NULL; |
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| 568 | } |
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| 569 | |
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| 570 | if(SetupLogFiles() != 0) { |
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| 571 | return -1; |
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| 572 | } |
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| 573 | |
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| 574 | //Sets up the PCAP capture interface |
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| 575 | // This function blocks, processing Ethernet packets forever |
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| 576 | SetupPCAP(); |
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| 577 | |
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| 578 | return 0; |
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| 579 | } |
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