unsigned
rte_kni_tx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned num)
{
unsigned ret = kni_fifo_put(kni->rx_q, (void **)mbufs, num);
/* Get mbufs from free_q and then free them */
kni_free_mbufs(kni);
return ret;
}
unsigned
rte_kni_tx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned num)
{
unsigned ret = kni_fifo_put(kni->rx_q, (void **)mbufs, num);
#ifdef RTE_LIBRW_PIOT
/* try allocating buffer only if the fifo is not full */
if (ret)
#endif
/* Get mbufs from free_q and then free them */
kni_free_mbufs(kni);
return ret;
}
unsigned
rte_kni_tx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned num)
{
unsigned ret = kni_fifo_put(kni->rx_q, (void **)mbufs, num);
/* Get mbufs from free_q and then free them */
kni_free_mbufs(kni);
/* Handle the requests from kernel space */
kni_request_handler(kni);
return ret;
}
int
rte_kni_handle_request(struct rte_kni *kni)
{
unsigned ret;
struct rte_kni_request *req;
if (kni == NULL)
return -1;
#ifdef RTE_LIBRW_PIOT
/*If there is a case where the kni interface is unidirectional. then the
free-q will never get freed. Hence calling it here*/
if (!kni_fifo_empty(kni->free_q))
kni_free_mbufs(kni);
#endif
/* Get request mbuf */
ret = kni_fifo_get(kni->req_q, (void **)&req, 1);
if (ret != 1)
return 0; /* It is OK of can not getting the request mbuf */
if (req != kni->sync_addr) {
rte_panic("Wrong req pointer %p\n", req);
}
/* Analyze the request and call the relevant actions for it */
switch (req->req_id) {
case RTE_KNI_REQ_CHANGE_MTU: /* Change MTU */
if (kni->ops.change_mtu)
req->result = kni->ops.change_mtu(kni->ops.port_id,
req->new_mtu);
break;
case RTE_KNI_REQ_CFG_NETWORK_IF: /* Set network interface up/down */
if (kni->ops.config_network_if)
req->result = kni->ops.config_network_if(\
kni->ops.port_id, req->if_up);
break;
default:
RTE_LOG(ERR, KNI, "Unknown request id %u\n", req->req_id);
req->result = -EINVAL;
break;
}
/* Construct response mbuf and put it back to resp_q */
ret = kni_fifo_put(kni->resp_q, (void **)&req, 1);
if (ret != 1) {
RTE_LOG(ERR, KNI, "Fail to put the muf back to resp_q\n");
return -1; /* It is an error of can't putting the mbuf back */
}
return 0;
}
unsigned
rte_kni_tx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned num)
{
void *phy_mbufs[num];
unsigned int ret;
unsigned int i;
for (i = 0; i < num; i++)
phy_mbufs[i] = va2pa(mbufs[i]);
ret = kni_fifo_put(kni->rx_q, phy_mbufs, num);
/* Get mbufs from free_q and then free them */
kni_free_mbufs(kni);
return ret;
}