static void
discovery (int n, PPPoEConnection* conns)
{
int a;
if (open_interfaces (n, conns))
{
for (a = 0; a < MAX_ATTEMPTS; a++)
{
ADD2LOG ("Attempt number %d\n", a + 1);
if (!send_padi (n, conns))
break;
if (wait_for_pado (n, conns))
break;
}
}
close_intefaces (n, conns);
}
int main(int argc, char** argv) {
int listening_socket;
int socket_to_client;
int yes_local;
in_port_t port_num;
struct sockaddr_in local_addr;
struct sockaddr_in client_addr;
socklen_t client_len;
int num_netfpgas;
struct nf2device *nf2devices[10];
yes_local=1;
DPRINTF("Starting proxy...\n");
if (argc < 4) {
printf("Usage: reg_proxy_server <num_NetFPGAs> <ip_addr> <port_num>\n");
printf(" num_NetFPGAs is the number of netfpga card in the system.\n");
printf(" ip_addr is the address to accept connections on.\n");
printf(" port_num is the port number to accept connections on.\n");
exit(0);
}
/* get the parameters for the proxy */
if (!inet_aton(argv[2], &local_addr.sin_addr)) {
perror("inet_aton");
fprintf(stderr, "Error: IP address specified is invalid.\n");
exit(1);
}
port_num = strtol(argv[3], NULL, 0);
if (errno == EINVAL || errno == ERANGE || port_num < 1024 || port_num > 65535) {
fprintf(stderr, "Error: port number has to be between 1024 and 65535. Saw %s.\n", argv[3]);
exit(1);
}
num_netfpgas = strtol(argv[1], NULL, 0);
if (num_netfpgas < 0 || num_netfpgas > 10) {
fprintf(stderr, "Error: Number of NetFPGAs has to be between 1 and 10. Saw %s.\n", argv[1]);
exit(1);
}
DPRINTF("Args have been parsed. num_netfpgas=%d\n", num_netfpgas);
open_interfaces(nf2devices, num_netfpgas);
DPRINTF("Interfaces now open.\n");
DPRINTF("Starting a connection...\n");
/* fill in the local address struct */
memset(&local_addr, 0, sizeof(SA));
local_addr.sin_family = AF_INET;
local_addr.sin_port = htons(port_num);
/* get a socket fd */
if ( (listening_socket = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
perror("socket");
DPRINTF();
exit(1);
}
/* allow reuse to get around port in use problem */
if (setsockopt(listening_socket, SOL_SOCKET, SO_REUSEADDR, &yes_local,
sizeof(int)) == -1) {
perror("setsockopt");
DPRINTF();
exit(1);
}
/* bind the socket to a port */
if (bind(listening_socket, (SA *)&local_addr, sizeof(SA)) < 0) {
perror("bind");
DPRINTF("Exiting...\n");
exit(1);
}
DPRINTF("Socket is now bound to port %d\n", port_num);
/* start listening to connections */
if (listen(listening_socket, 10) < 0) {
perror("listen");
DPRINTF();
close(listening_socket);
exit(1);
}
DPRINTF("Now listening to connections\n");
/* loop until we are interrupted, servicing every request */
while (1) {
client_len=sizeof(client_addr);
/* accept the connection and start parsing */
if ( (socket_to_client = accept(listening_socket, (SA *) &client_addr,
&client_len)) < 0) {
DPRINTF();
perror("accept");
continue;
}
DPRINTF("Accepted connection from client");
/* read the request, parse,
* send response back to client */
if (parse_request(socket_to_client, nf2devices, num_netfpgas) < 0) {
DPRINTF();
fprintf(stderr, "Error parsing the request\n");
}
close(socket_to_client);
}
return 0;
}
