/** Post a message to an mbox - may not fail
* -> blocks if full, only used from tasks not from ISR
* @param mbox mbox to posts the message
* @param msg message to post (ATTENTION: can be NULL)
*/
void sys_mbox_post(sys_mbox_t *mbox, void *msg)
{
RT_DEBUG_NOT_IN_INTERRUPT;
rt_mb_send_wait(*mbox, (rt_uint32_t)msg, RT_WAITING_FOREVER);
return;
}
void sys_mbox_post(sys_mbox_t mbox, void *msg)
{
#if SYS_DEBUG
{
struct rt_thread *thread;
thread = rt_thread_self();
LWIP_DEBUGF(SYS_DEBUG, ("%s, Post mail: %s ,0x%x\n",thread->name,
mbox->parent.parent.name, (rt_uint32_t)msg));
}
#endif
rt_mb_send_wait(mbox, (rt_uint32_t)msg,RT_WAITING_FOREVER);
return;
}
static void pcap_thread_entry(void* parameter)
{
pcap_if_t *netif;
pcap_t *tap;
char errbuf[PCAP_ERRBUF_SIZE];
struct pcap_pkthdr *header;
const u_char *pkt_data;
int res;
netif = (pcap_if_t *) parameter;
/* Open the adapter */
if ((tap = pcap_open_live(netif->name,
65536, // portion of the packet to capture.
1, // promiscuous mode (nonzero means promiscuous)
1, // read timeout, 0 blocked, -1 no timeout
errbuf )) == NULL)
{
rt_kprintf("Unable to open the adapter. %s is not supported by WinPcap\n", netif->name);
return;
}
NETIF_PCAP(&pcap_netif_device) = tap;
/* Read the packets */
while (1)
{
struct eth_device* eth;
struct pbuf *p;
rt_enter_critical();
res = pcap_next_ex(tap, &header, &pkt_data);
rt_exit_critical();
if (res == 0) continue;
eth = (struct eth_device*) &pcap_netif_device;
p = pbuf_alloc(PBUF_LINK, header->len, PBUF_RAM);
pbuf_take(p, pkt_data, header->len);
/* send to packet mailbox */
rt_mb_send_wait(packet_mb, (rt_uint32_t)p, RT_WAITING_FOREVER);
/* notify eth rx thread to receive packet */
eth_device_ready(eth);
}
}
err_t ethernetif_linkoutput(struct netif *netif, struct pbuf *p)
{
struct eth_tx_msg msg;
struct eth_device* enetif;
enetif = (struct eth_device*)netif->state;
/* send a message to eth tx thread */
msg.netif = netif;
msg.buf = p;
if (rt_mb_send_wait(ð_tx_thread_mb, (rt_uint32_t) &msg, RT_WAITING_FOREVER) == RT_EOK) {
/* waiting for ack */
rt_sem_take(&(enetif->tx_ack), RT_WAITING_FOREVER);
}
return ERR_OK;
}
