[2053] | 1 | //////////////////////////////////////////////////////////////////////////////// |
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| 2 | // Copyright (c) 2004 Xilinx, Inc. All rights reserved. |
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| 3 | // |
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| 4 | // Xilinx, Inc. |
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| 5 | // XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A |
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| 6 | // COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS |
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| 7 | // ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR |
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| 8 | // STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION |
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| 9 | // IS FREE FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE |
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| 10 | // FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION. |
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| 11 | // XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO |
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| 12 | // THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO |
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| 13 | // ANY WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE |
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| 14 | // FROM CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY |
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| 15 | // AND FITNESS FOR A PARTICULAR PURPOSE. |
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| 16 | // |
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| 17 | // File : xilsock.c |
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| 18 | // Date : 2002, March 20. |
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| 19 | // Author : Sathya Thammanur |
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| 20 | // Company: Xilinx |
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| 21 | // Group : Emerging Software Technologies |
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| 22 | // |
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| 23 | // Summary: |
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| 24 | // Xilinx internal socket related functions (xilsock functions) |
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| 25 | // |
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| 26 | // $Id: xilsock.c,v 1.2.8.6 2005/11/15 23:41:10 salindac Exp $ |
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| 27 | // |
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| 28 | //////////////////////////////////////////////////////////////////////////////// |
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| 29 | |
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| 30 | //////////////////////////////////////////////////////////////////////////////// |
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| 31 | // see copyright.txt for Rice University/Mango Communications modifications |
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| 32 | //////////////////////////////////////////////////////////////////////////////// |
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| 33 | |
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| 34 | #include <xilnet_config.h> |
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| 35 | |
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| 36 | /* |
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| 37 | * Initialization of xilsock_sockets |
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| 38 | */ |
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| 39 | |
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| 40 | int xilsock_init (unsigned int eth_dev_num) { |
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| 41 | |
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| 42 | int i; |
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| 43 | |
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| 44 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 45 | |
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| 46 | if (!eth_device[eth_dev_num].is_xilsock_init) { |
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| 47 | for (i = 0; i < NO_OF_XILSOCKS; i++) { |
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| 48 | sockets[i].type = 0; |
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| 49 | sockets[i].domain = 0; |
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| 50 | sockets[i].proto = 0; |
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| 51 | sockets[i].listen = 0; |
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| 52 | sockets[i].bound = 0; |
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| 53 | sockets[i].accept = 0; |
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| 54 | sockets[i].connect = 0; |
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| 55 | sockets[i].closing = 0; |
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| 56 | sockets[i].closed = 0; |
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| 57 | sockets[i].free = 1; |
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| 58 | sockets[i].conn.tcp_conn = NULL; |
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| 59 | sockets[i].recvbuf.buf = NULL; |
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| 60 | sockets[i].recvbuf.size = 0; |
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| 61 | } |
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| 62 | eth_device[eth_dev_num].is_xilsock_init = 1; |
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| 63 | } |
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| 64 | return eth_device[eth_dev_num].is_xilsock_init; |
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| 65 | } |
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| 66 | |
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| 67 | |
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| 68 | /* |
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| 69 | * Release a socket |
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| 70 | */ |
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| 71 | |
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| 72 | void xilsock_rel_socket (int sd, unsigned int eth_dev_num) { |
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| 73 | |
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| 74 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 75 | |
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| 76 | if (sockets[sd].type == SOCK_STREAM) { |
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| 77 | sockets[sd].conn.tcp_conn = NULL; |
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| 78 | } |
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| 79 | else { |
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| 80 | sockets[sd].conn.udp_conn = NULL; |
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| 81 | } |
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| 82 | sockets[sd].type = 0; |
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| 83 | sockets[sd].domain = 0; |
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| 84 | sockets[sd].proto = 0; |
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| 85 | sockets[sd].listen = 0; |
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| 86 | sockets[sd].bound = 0; |
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| 87 | sockets[sd].accept = 0; |
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| 88 | sockets[sd].connect = 0; |
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| 89 | sockets[sd].closing = 0; |
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| 90 | sockets[sd].closed = 0; |
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| 91 | sockets[sd].free = 1; |
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| 92 | sockets[sd].recvbuf.buf = NULL; |
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| 93 | sockets[sd].recvbuf.size = 0; |
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| 94 | |
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| 95 | } |
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| 96 | |
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| 97 | |
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| 98 | /* |
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| 99 | * Allocate a xilsock_socket and return socket descriptor |
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| 100 | * if not able to alloc socket, return -1 |
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| 101 | */ |
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| 102 | |
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| 103 | int xilsock_socket(int domain, int type, int proto, unsigned int eth_dev_num) { |
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| 104 | |
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| 105 | int sd; |
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| 106 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 107 | |
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| 108 | // find a free xilsock_socket |
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| 109 | if (!xilsock_init(eth_dev_num)){ |
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| 110 | xil_printf("xilsock is not initialized\n"); |
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| 111 | return (-1); |
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| 112 | } |
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| 113 | for (sd = 0; sd < NO_OF_XILSOCKS; sd++) { |
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| 114 | if (sockets[sd].free) { |
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| 115 | // initialise the socket & make it unavailable |
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| 116 | sockets[sd].domain = domain; |
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| 117 | sockets[sd].type = type; |
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| 118 | sockets[sd].proto = proto; |
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| 119 | sockets[sd].free = 0; |
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| 120 | return sd; |
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| 121 | } |
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| 122 | } |
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| 123 | // return as no sockets available |
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| 124 | return -1; |
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| 125 | } |
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| 126 | |
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| 127 | |
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| 128 | /* |
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| 129 | * bind a socket to the specified address. |
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| 130 | * binds addr to socket sd. returns 1 if bound |
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| 131 | * returns -1 if not able to bind |
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| 132 | */ |
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| 133 | |
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| 134 | int xilsock_bind(int sd, struct sockaddr* addr, int addrlen, void (*callback) (), unsigned int eth_dev_num) { |
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| 135 | |
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| 136 | int connd; |
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| 137 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 138 | struct xilnet_udp_conn * conns = (struct xilnet_udp_conn *)eth_device[eth_dev_num].xilnet_udp_conns; |
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| 139 | |
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| 140 | // open a tcp conn/udp conn |
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| 141 | if (sockets[sd].type == SOCK_STREAM) { |
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| 142 | xil_printf("*** Error xilsock_bind: tcp sockets not available \n"); |
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| 143 | xilsock_rel_socket(sd, eth_dev_num); |
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| 144 | return -1; |
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| 145 | } |
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| 146 | else if (sockets[sd].type == SOCK_DGRAM) { |
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| 147 | if ( (connd = xilnet_udp_open_conn (((struct sockaddr_in*)addr)->sin_port, callback, eth_dev_num)) == -1) { |
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| 148 | xil_printf("*** Error xilsock_bind: udp sockets not available \n"); |
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| 149 | xilsock_rel_socket(sd, eth_dev_num); |
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| 150 | return -1; |
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| 151 | } |
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| 152 | sockets[sd].conn.udp_conn = (conns + connd); |
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| 153 | // update fd of udp conn |
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| 154 | conns[connd].fd = sd; |
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| 155 | } |
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| 156 | |
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| 157 | return 1; |
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| 158 | } |
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| 159 | |
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| 160 | |
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| 161 | /* |
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| 162 | * listen on a socket |
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| 163 | * called from listen() |
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| 164 | */ |
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| 165 | |
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| 166 | int xilsock_listen(int s, int backlog, unsigned int eth_dev_num) { |
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| 167 | |
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| 168 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 169 | |
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| 170 | sockets[s].listen = 1; |
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| 171 | return 1; |
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| 172 | } |
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| 173 | |
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| 174 | |
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| 175 | |
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| 176 | /* |
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| 177 | * recv data on socket |
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| 178 | * called from recv() |
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| 179 | * returns -1 if no data recvd for "s" (non_blocking call) or |
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| 180 | * number of bytes recvd for "s" |
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| 181 | */ |
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| 182 | |
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| 183 | int xilsock_recv(int s, unsigned char *buf, unsigned int len, unsigned int eth_dev_num) { |
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| 184 | |
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| 185 | unsigned int n; |
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| 186 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 187 | int bytes_recvd = 0; |
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| 188 | |
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| 189 | if (s > NO_OF_XILSOCKS) { |
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| 190 | xil_printf("*** Error xilsock_recv: invalid socket descriptor %d \n", s); |
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| 191 | return -1; |
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| 192 | } |
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| 193 | |
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| 194 | n = xilnet_eth_recv_frame(eth_dev_num); |
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| 195 | |
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| 196 | // Return if data not for socket s |
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| 197 | if ((n == -1) || (sockets[s].recvbuf.buf == NULL)) |
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| 198 | return -1; |
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| 199 | |
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| 200 | // Copy data if required onto buf |
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| 201 | if (sockets[s].recvbuf.buf != buf) |
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| 202 | { |
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| 203 | memcpy(buf, sockets[s].recvbuf.buf, len); |
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| 204 | bytes_recvd = sockets[s].recvbuf.size; |
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| 205 | |
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| 206 | //reset socket buffer and size |
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| 207 | sockets[s].recvbuf.buf = NULL; |
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| 208 | sockets[s].recvbuf.size = 0; |
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| 209 | } |
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| 210 | |
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| 211 | // return no of bytes recvd for this conn |
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| 212 | return bytes_recvd; |
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| 213 | } |
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| 214 | |
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| 215 | |
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| 216 | /* |
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| 217 | * send data on socket |
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| 218 | * called from send() |
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| 219 | */ |
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| 220 | |
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| 221 | int xilsock_send(int s, unsigned char* buf, unsigned int len, unsigned int eth_dev_num) { |
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| 222 | |
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| 223 | xil_printf("*** Error xilsock_send: TCP connections are not supported\n"); |
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| 224 | return -1; |
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| 225 | |
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| 226 | #if 0 |
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| 227 | struct xilnet_tcp_conn *conn; |
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| 228 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 229 | unsigned char * sendbuf = (unsigned char *)eth_device[eth_dev_num].sendbuf; |
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| 230 | |
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| 231 | |
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| 232 | conn = sockets[s].conn.tcp_conn; |
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| 233 | |
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| 234 | if (!conn) { |
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| 235 | xil_printf("*** Error xilsock_send: no such socket %d \n", conn); |
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| 236 | return -1; |
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| 237 | } |
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| 238 | |
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| 239 | if (buf != sendbuf) { |
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| 240 | memset(sendbuf, 0, eth_device[eth_dev_num].buf_size); |
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| 241 | memcpy(sendbuf+LINK_HDR_LEN+IP_HDR_LEN*4+(TCP_HDR_LEN*4), buf, len); |
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| 242 | } |
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| 243 | |
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| 244 | xilnet_tcp_send_pkt(conn, sendbuf+LINK_HDR_LEN+IP_HDR_LEN*4, len, TCP_ACK, eth_dev_num); |
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| 245 | xilnet_ip_header(sendbuf+LINK_HDR_LEN, len+(TCP_HDR_LEN*4)+IP_HDR_LEN*4, IP_PROTO_TCP, conn->dst_ip, eth_dev_num); |
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| 246 | |
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| 247 | xilnet_eth_send_frame(sendbuf, len+(TCP_HDR_LEN*4)+IP_HDR_LEN*4+ETH_HDR_LEN, conn->dst_ip, NULL, ETH_PROTO_IP, eth_dev_num); |
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| 248 | |
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| 249 | return len; |
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| 250 | #endif |
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| 251 | } |
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| 252 | |
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| 253 | |
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| 254 | /* |
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| 255 | * recvfrom socket |
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| 256 | * Data recvd on any UDP socket |
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| 257 | * return -1 if data not for socket "s" [non-blocking call] |
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| 258 | */ |
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| 259 | int xilsock_recvfrom(int s, unsigned char *buf, unsigned int len, |
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| 260 | struct sockaddr* from, unsigned int *fromlen, unsigned int eth_dev_num) |
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| 261 | { |
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| 262 | int n; |
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| 263 | int bytes_recvd = 0; |
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| 264 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 265 | struct xilnet_udp_conn * conn = sockets[s].conn.udp_conn; |
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| 266 | |
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| 267 | if (s > NO_OF_XILSOCKS) { |
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| 268 | xil_printf("*** Error xilsock_recvfrom: invalid socket descriptor %d \n", s); |
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| 269 | return -1; |
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| 270 | } |
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| 271 | |
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| 272 | n = xilnet_eth_recv_frame(eth_dev_num); |
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| 273 | |
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| 274 | // Return if data not for socket s |
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| 275 | if ((n < 0 ) || (sockets[s].recvbuf.buf == NULL)) |
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| 276 | return -1; |
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| 277 | |
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| 278 | // Copy data if required onto buf |
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| 279 | if (sockets[s].recvbuf.buf != buf) |
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| 280 | { |
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| 281 | memcpy(buf, sockets[s].recvbuf.buf, len); |
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| 282 | bytes_recvd = sockets[s].recvbuf.size; |
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| 283 | |
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| 284 | //reset socket buffer and size |
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| 285 | sockets[s].recvbuf.buf = NULL; |
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| 286 | sockets[s].recvbuf.size = 0; |
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| 287 | } |
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| 288 | |
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| 289 | // Copy the source address onto "to" |
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| 290 | ((struct sockaddr_in*)from)->sin_addr.s_addr = |
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| 291 | (conn->dst_ip[0] << 24) + (conn->dst_ip[1] << 16) + (conn->dst_ip[2] << 8) + conn->dst_ip[3]; |
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| 292 | ((struct sockaddr_in*)from)->sin_port = conn->dst_port; |
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| 293 | *fromlen = sizeof(from); |
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| 294 | |
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| 295 | // return no of bytes recvd for this conn |
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| 296 | return bytes_recvd; |
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| 297 | } |
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| 298 | |
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| 299 | |
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| 300 | /* |
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| 301 | * sendto socket |
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| 302 | * called from sendto() |
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| 303 | */ |
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| 304 | |
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| 305 | int xilsock_sendto(int s, unsigned char* buf, unsigned int len, struct sockaddr* to, unsigned int eth_dev_num) |
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| 306 | { |
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| 307 | |
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| 308 | struct xilnet_udp_conn * conn; |
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| 309 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 310 | unsigned int dstaddr = ((struct sockaddr_in*)to)->sin_addr.s_addr; |
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| 311 | unsigned char * sendbuf = (unsigned char *)eth_device[eth_dev_num].sendbuf; |
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| 312 | |
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| 313 | |
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| 314 | conn = sockets[s].conn.udp_conn; |
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| 315 | conn->dst_ip[0] = (unsigned char) ((dstaddr >> 24) & 0xFF); |
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| 316 | conn->dst_ip[1] = (unsigned char) ((dstaddr >> 16) & 0xFF); |
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| 317 | conn->dst_ip[2] = (unsigned char) ((dstaddr >> 8) & 0xFF); |
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| 318 | conn->dst_ip[3] = (unsigned char) ((dstaddr) & 0xFF); |
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| 319 | conn->dst_port = ((struct sockaddr_in*)to)->sin_port; |
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| 320 | |
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| 321 | if (!conn) { |
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| 322 | xil_printf("*** Error xilsock_sendto: no such socket %d \n", conn); |
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| 323 | return -1; |
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| 324 | } |
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| 325 | |
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| 326 | if (buf != sendbuf) { |
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| 327 | memset(sendbuf, 0, eth_device[eth_dev_num].buf_size); |
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| 328 | memcpy(sendbuf+LINK_HDR_LEN+IP_HDR_LEN*4+UDP_HDR_LEN, buf, len); |
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| 329 | } |
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| 330 | |
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| 331 | // calls to udp stack |
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| 332 | xilnet_udp_header(conn, sendbuf+LINK_HDR_LEN+IP_HDR_LEN*4, len+UDP_HDR_LEN, eth_dev_num); |
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[2068] | 333 | |
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[2053] | 334 | xilnet_ip_header(sendbuf+LINK_HDR_LEN, len+UDP_HDR_LEN+IP_HDR_LEN*4, IP_PROTO_UDP, conn->dst_ip, eth_dev_num); |
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| 335 | |
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| 336 | xilnet_eth_send_frame(sendbuf, len+UDP_HDR_LEN+IP_HDR_LEN*4+ETH_HDR_LEN, conn->dst_ip, NULL, ETH_PROTO_IP, eth_dev_num); |
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| 337 | |
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[2068] | 338 | return len; |
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[2053] | 339 | } |
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| 340 | |
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| 341 | |
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| 342 | /* |
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| 343 | * close socket |
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| 344 | */ |
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| 345 | |
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| 346 | void xilsock_close(int s, unsigned int eth_dev_num) { |
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| 347 | |
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| 348 | #if 0 |
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| 349 | unsigned char flags = 0; |
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| 350 | unsigned short check = 0; |
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| 351 | unsigned char *tcp_reply; |
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| 352 | unsigned char * sendbuf = (unsigned char *)eth_device[eth_dev_num].sendbuf; |
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| 353 | #endif |
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| 354 | struct xilsock_socket * sockets = (struct xilsock_socket *)eth_device[eth_dev_num].xilsock_sockets; |
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| 355 | |
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| 356 | if (sockets[s].type == SOCK_STREAM) { |
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| 357 | |
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| 358 | xil_printf("*** Error xilsock_close: TCP connections are not supported\n"); |
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| 359 | |
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| 360 | #if 0 |
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| 361 | struct xilnet_tcp_conn *conn = sockets[s].conn.tcp_conn; |
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| 362 | |
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| 363 | // construct the FIN and wait for ack & FIN from client |
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| 364 | flags = (TCP_FIN | TCP_ACK); |
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| 365 | ((struct xilnet_tcp_conn*)conn)->state = TCP_FIN_WAIT1; |
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| 366 | memset(sendbuf, 0, LINK_FRAME_LEN); |
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| 367 | tcp_reply = sendbuf+ETH_HDR_LEN+(IP_HDR_LEN*4); |
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| 368 | |
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| 369 | xilnet_tcp_header(((struct xilnet_tcp_conn*)conn), tcp_reply, 1, flags, eth_dev_num); |
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| 370 | |
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| 371 | // calculate tcp checksum |
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| 372 | check = xilnet_udp_tcp_calc_chksum(tcp_reply, (TCP_HDR_LEN*4), eth_device[eth_dev_num].node_ip_addr, ((struct xilnet_tcp_conn*)conn)->dst_ip, IP_PROTO_TCP); |
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| 373 | tcp_reply[TCP_CHECK_OFF] = (check & 0xff00) >> 8; |
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| 374 | tcp_reply[TCP_CHECK_OFF+1] = (check & 0x00ff); |
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| 375 | |
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| 376 | xilnet_ip_header(sendbuf+ETH_HDR_LEN,(IP_HDR_LEN*4)+(TCP_HDR_LEN*4), IP_PROTO_TCP, ((struct xilnet_tcp_conn*)conn)->dst_ip, eth_dev_num); |
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| 377 | xilnet_eth_send_frame(sendbuf, (TCP_HDR_LEN*4)+(IP_HDR_LEN*4)+ETH_HDR_LEN, ((struct xilnet_tcp_conn*)conn)->dst_ip, NULL, ETH_PROTO_IP, eth_dev_num); |
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| 378 | #endif |
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| 379 | |
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| 380 | } |
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| 381 | else if (sockets[s].type == SOCK_DGRAM) { |
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| 382 | xilnet_udp_close_conn(sockets[s].conn.udp_conn, eth_dev_num); |
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| 383 | // close the socket |
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| 384 | xilsock_rel_socket(s, eth_dev_num); |
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| 385 | } |
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| 386 | } |
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