#include <stdio.h> #include <assert.h> #include <linux/bpf.h> #include <unistd.h> #include "libbpf.h" #include "bpf_load.h" #include <sys/socket.h> #include <string.h> #include <netinet/in.h> #include <arpa/inet.h> int main(int ac, char **argv) { int serverfd, serverconnfd, clientfd; socklen_t sockaddr_len; struct sockaddr serv_addr, mapped_addr, tmp_addr; struct sockaddr_in *serv_addr_in, *mapped_addr_in, *tmp_addr_in; char filename[256]; char *ip; serv_addr_in = (struct sockaddr_in *)&serv_addr; mapped_addr_in = (struct sockaddr_in *)&mapped_addr; tmp_addr_in = (struct sockaddr_in *)&tmp_addr; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); return 1; } assert((serverfd = socket(AF_INET, SOCK_STREAM, 0)) > 0); assert((clientfd = socket(AF_INET, SOCK_STREAM, 0)) > 0); /* Bind server to ephemeral port on lo */ memset(&serv_addr, 0, sizeof(serv_addr)); serv_addr_in->sin_family = AF_INET; serv_addr_in->sin_port = 0; serv_addr_in->sin_addr.s_addr = htonl(INADDR_LOOPBACK); assert(bind(serverfd, &serv_addr, sizeof(serv_addr)) == 0); sockaddr_len = sizeof(serv_addr); assert(getsockname(serverfd, &serv_addr, &sockaddr_len) == 0); ip = inet_ntoa(serv_addr_in->sin_addr); printf("Server bound to: %s:%d\n", ip, ntohs(serv_addr_in->sin_port)); memset(&mapped_addr, 0, sizeof(mapped_addr)); mapped_addr_in->sin_family = AF_INET; mapped_addr_in->sin_port = htons(5555); mapped_addr_in->sin_addr.s_addr = inet_addr("255.255.255.255"); assert(!bpf_map_update_elem(map_fd[0], &mapped_addr, &serv_addr, BPF_ANY)); assert(listen(serverfd, 5) == 0); ip = inet_ntoa(mapped_addr_in->sin_addr); printf("Client connecting to: %s:%d\n", ip, ntohs(mapped_addr_in->sin_port)); assert(connect(clientfd, &mapped_addr, sizeof(mapped_addr)) == 0); sockaddr_len = sizeof(tmp_addr); ip = inet_ntoa(tmp_addr_in->sin_addr); assert((serverconnfd = accept(serverfd, &tmp_addr, &sockaddr_len)) > 0); printf("Server received connection from: %s:%d\n", ip, ntohs(tmp_addr_in->sin_port)); sockaddr_len = sizeof(tmp_addr); assert(getpeername(clientfd, &tmp_addr, &sockaddr_len) == 0); ip = inet_ntoa(tmp_addr_in->sin_addr); printf("Client's peer address: %s:%d\n", ip, ntohs(tmp_addr_in->sin_port)); /* Is the server's getsockname = the socket getpeername */ assert(memcmp(&serv_addr, &tmp_addr, sizeof(struct sockaddr_in)) == 0); return 0; } <input type='hidden' name='id2' value='fe6bce8d30a86c693bf7cfbf4759cbafd121289f'/><select name='qt'> <option value='grep'>log msg</option> <option value='author'>author</option> <option value='committer'>committer</option> <option value='range'>range</option> </select> <input class='txt' type='search' size='10' name='q' value=''/> <input type='submit' value='search'/> </form> </td></tr></table> <div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?id=e34bac726d27056081d0250c0e173e4b155aa340&id2=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/tools?id=e34bac726d27056081d0250c0e173e4b155aa340&id2=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing?id=e34bac726d27056081d0250c0e173e4b155aa340&id2=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>testing</a>/<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests?id=e34bac726d27056081d0250c0e173e4b155aa340&id2=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>selftests</a>/<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/futex?id=e34bac726d27056081d0250c0e173e4b155aa340&id2=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>futex</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='e34bac726d27056081d0250c0e173e4b155aa340'/><input type='hidden' name='id2' value='fe6bce8d30a86c693bf7cfbf4759cbafd121289f'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=e34bac726d27056081d0250c0e173e4b155aa340&id2=fe6bce8d30a86c693bf7cfbf4759cbafd121289f'>Diffstat</a> (limited to 'tools/testing/selftests/futex')</div><table summary='diffstat' class='diffstat'>