static void process_msg(struct slip_context *slip)
{
u16_t vlan_tag = NET_VLAN_TAG_UNSPEC;
struct net_pkt *pkt;
pkt = slip_poll_handler(slip);
if (!pkt || !pkt->frags) {
return;
}
#if defined(CONFIG_NET_VLAN)
{
struct net_eth_hdr *hdr = NET_ETH_HDR(pkt);
if (ntohs(hdr->type) == NET_ETH_PTYPE_VLAN) {
struct net_eth_vlan_hdr *hdr_vlan =
(struct net_eth_vlan_hdr *)NET_ETH_HDR(pkt);
net_pkt_set_vlan_tci(pkt, ntohs(hdr_vlan->vlan.tci));
vlan_tag = net_pkt_vlan_tag(pkt);
}
}
#endif
if (net_recv_data(get_iface(slip, vlan_tag), pkt) < 0) {
net_pkt_unref(pkt);
}
slip->rx = NULL;
slip->last = NULL;
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(slip_process, ev, data)
{
PROCESS_BEGIN();
rxbuf_init();
while(1) {
PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_POLL);
slip_active = 1;
/* Move packet from rxbuf to buffer provided by uIP. */
uip_len = slip_poll_handler(&uip_buf[UIP_LLH_LEN],
UIP_BUFSIZE - UIP_LLH_LEN);
#if !UIP_CONF_IPV6
if(uip_len == 4 && strncmp((char*)&uip_buf[UIP_LLH_LEN], "?IPA", 4) == 0) {
char buf[8];
memcpy(&buf[0], "=IPA", 4);
memcpy(&buf[4], &uip_hostaddr, 4);
if(input_callback) {
input_callback();
}
slip_write(buf, 8);
} else if(uip_len > 0
&& uip_len == (((u16_t)(BUF->len[0]) << 8) + BUF->len[1])
&& uip_ipchksum() == 0xffff) {
#define IP_DF 0x40
if(BUF->ipid[0] == 0 && BUF->ipid[1] == 0 && BUF->ipoffset[0] & IP_DF) {
static u16_t ip_id;
u16_t nid = ip_id++;
BUF->ipid[0] = nid >> 8;
BUF->ipid[1] = nid;
nid = uip_htons(nid);
nid = ~nid; /* negate */
BUF->ipchksum += nid; /* add */
if(BUF->ipchksum < nid) { /* 1-complement overflow? */
BUF->ipchksum++;
}
}
tcpip_input();
} else {
uip_len = 0;
SLIP_STATISTICS(slip_ip_drop++);
}
#else /* UIP_CONF_IPV6 */
if(uip_len > 0) {
if(input_callback) {
input_callback();
}
tcpip_input();
}
#endif /* UIP_CONF_IPV6 */
}
static void process_msg(struct slip_context *slip)
{
struct net_pkt *pkt;
pkt = slip_poll_handler(slip);
if (!pkt || !pkt->frags) {
return;
}
if (net_recv_data(slip->iface, pkt) < 0) {
net_pkt_unref(pkt);
}
slip->rx = NULL;
slip->last = NULL;
}
