void do_net(void)
{
unsigned int len;
if(!(EINT0PEND & (1 << 7)))
goto end;
if((len = eth_recv((void *)recv_buf)) > 14)//判断mac+ip/arp 一共14个字节 大于14表示有数据
eth_unpack();//板子解包 pc---->板子 板子解包
end:
EINT0PEND = EINT0PEND;
}
int main(int argc, char** argv)
{
struct sigaction siginthandler;
siginthandler.sa_handler = sigcatcher;
sigemptyset(&siginthandler.sa_mask);
siginthandler.sa_flags = 0;
sigaction(SIGINT, &siginthandler, NULL);
sigaction(SIGHUP, &siginthandler, NULL);
sigaction(SIGQUIT, &siginthandler, NULL);
sigaction(SIGTERM, &siginthandler, NULL);
sigaction(SIGKILL, &siginthandler, NULL);
int socketfd = socket(AF_PACKET, SOCK_RAW, ntohs(0x0003));
if (socketfd < 0)
{
std::cout << "sockerror: " << strerror(errno) << std::endl;
return -1;
}
int packbufsize = 1024*64;
unsigned char packbuf[packbufsize];
struct sockaddr src_addr;
socklen_t addrlen;
memset(packbuf, 0, packbufsize);
memset(&src_addr, 0, sizeof(sockaddr));
memset(&addrlen, 0, sizeof(addrlen));
int flags = 0;
ssize_t packsize = 0;
while (!sigcatch) {
packsize = recvfrom(socketfd, packbuf, packbufsize, flags, &src_addr, &addrlen);
if (packsize < 0) continue;
eth_unpack(packbuf, packsize);
}
close(socketfd);
return 0;
}
