static void *uip_udp_socket_thread(void *p)
{
struct epoll_event events[UIP_UDP_MAX_EVENTS];
struct uip_udp_socket *sk;
struct uip_info *info;
struct uip_buf *buf;
int payload_len;
u8 *payload;
int nfds;
int i;
kvm__set_thread_name("uip-udp");
info = p;
do {
payload = malloc(UIP_MAX_UDP_PAYLOAD);
} while (!payload);
while (1) {
nfds = epoll_wait(info->udp_epollfd, events, UIP_UDP_MAX_EVENTS, -1);
if (nfds == -1)
continue;
for (i = 0; i < nfds; i++) {
sk = events[i].data.ptr;
payload_len = recvfrom(sk->fd, payload, UIP_MAX_UDP_PAYLOAD, 0, NULL, NULL);
if (payload_len < 0)
continue;
/*
* Get free buffer to send data to guest
*/
buf = uip_buf_get_free(info);
uip_udp_make_pkg(info, sk, buf, payload, payload_len);
/*
* Send data received from socket to guest
*/
uip_buf_set_used(info, buf);
}
}
free(payload);
pthread_exit(NULL);
return NULL;
}
int uip_tx_do_ipv4_udp_dhcp(struct uip_tx_arg *arg)
{
struct uip_udp_socket sk;
struct uip_dhcp *dhcp;
struct uip_info *info;
struct uip_buf *buf;
u8 reply_msg_type;
dhcp = (struct uip_dhcp *)arg->eth;
if (uip_dhcp_is_discovery(dhcp))
reply_msg_type = UIP_DHCP_OFFER;
else if (uip_dhcp_is_request(dhcp))
reply_msg_type = UIP_DHCP_ACK;
else
return -1;
buf = uip_buf_clone(arg);
info = arg->info;
/*
* Cook DHCP pkg
*/
uip_dhcp_make_pkg(info, &sk, buf, reply_msg_type);
/*
* Cook UDP pkg
*/
uip_udp_make_pkg(info, &sk, buf, NULL, UIP_DHCP_MAX_PAYLOAD_LEN);
/*
* Send data received from socket to guest
*/
uip_buf_set_used(info, buf);
return 0;
}
