/* Check for decapsulation and pass packets directly to VIRTIO device */
int
vxlan_rx_pkts(struct virtio_net *dev, struct rte_mbuf **pkts_burst,
uint32_t rx_count)
{
uint32_t i = 0;
uint32_t count = 0;
int ret;
struct rte_mbuf *pkts_valid[rx_count];
for (i = 0; i < rx_count; i++) {
if (enable_stats) {
rte_atomic64_add(
&dev_statistics[dev->device_fh].rx_bad_ip_csum,
(pkts_burst[i]->ol_flags & PKT_RX_IP_CKSUM_BAD)
!= 0);
rte_atomic64_add(
&dev_statistics[dev->device_fh].rx_bad_ip_csum,
(pkts_burst[i]->ol_flags & PKT_RX_L4_CKSUM_BAD)
!= 0);
}
ret = vxlan_rx_process(pkts_burst[i]);
if (unlikely(ret < 0))
continue;
pkts_valid[count] = pkts_burst[i];
count++;
}
ret = rte_vhost_enqueue_burst(dev, VIRTIO_RXQ, pkts_valid, count);
return ret;
}
/*
functional description:
layer-2 decapsulate to decide which mod should recv it,
input mod:any
output mod:
RX_MOD_ARP
RX_MOD_IP
RX_MOD_IPv6
RX_MOD_DROP:we do not deal with other kind of pkt
mod stack pos:first module
date :2014-05-10
author:jzheng
*/
dbg_local enum RX_MOD_INDEX rx_module_l2decap(dbg_local struct rte_mbuf* pktbuf,dbg_local enum RX_MOD_INDEX imodid)
{
enum RX_MOD_INDEX nextmodid=RX_MOD_DROP;//default mod is droping
struct ether_hdr*eh;
uint16_t eth_type;
int iport_in;//for RX statistic
iport_in=pktbuf->pkt.in_port;
rte_atomic64_inc(&gPortParaConf[iport_in].sd_port.ui_cnt_rx);
rte_atomic64_add(&gPortParaConf[iport_in].sd_port.ui_byte_rx,pktbuf->pkt.pkt_len-sizeof(struct ether_hdr));
rte_atomic64_add(&gPortParaConf[iport_in].sd_port.ui_cnt_timer_rx,pktbuf->pkt.pkt_len-sizeof(struct ether_hdr));
eh=rte_pktmbuf_mtod(pktbuf,struct ether_hdr*);
eth_type=HTONS(eh->ether_type);
if(eth_type==ETH_TYPE_ARP)
nextmodid=RX_MOD_ARP;
else if(eth_type==ETH_TYPE_IP)
nextmodid=RX_MOD_IP;
else if(eth_type==ETH_TYPE_IPV6)
nextmodid=RX_MOD_IPv6;
else
nextmodid=RX_MOD_DROP;
//printf("flag:%d %04x\n",nextmodid,eth_type);
return nextmodid;
}
virtio_tx_local(struct virtio_net *dev, struct rte_mbuf *m)
{
struct virtio_net_data_ll *dev_ll;
struct ether_hdr *pkt_hdr;
uint64_t ret = 0;
pkt_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
/*get the used devices list*/
dev_ll = ll_root_used;
while (dev_ll != NULL) {
if (likely(dev_ll->dev->ready == DEVICE_READY) && ether_addr_cmp(&(pkt_hdr->d_addr),
&dev_ll->dev->mac_address)) {
/* Drop the packet if the TX packet is destined for the TX device. */
if (dev_ll->dev->device_fh == dev->device_fh) {
RTE_LOG(DEBUG, VHOST_DATA, "(%" PRIu64 ") TX: "
"Source and destination MAC addresses are the same. "
"Dropping packet.\n",
dev_ll->dev->device_fh);
return 0;
}
RTE_LOG(DEBUG, VHOST_DATA, "(%" PRIu64 ") TX: "
"MAC address is local\n", dev_ll->dev->device_fh);
if (dev_ll->dev->remove) {
/*drop the packet if the device is marked for removal*/
RTE_LOG(DEBUG, VHOST_DATA, "(%" PRIu64 ") "
"Device is marked for removal\n",
dev_ll->dev->device_fh);
} else {
/*send the packet to the local virtio device*/
ret = virtio_dev_rx(dev_ll->dev, &m, 1);
if (enable_stats) {
rte_atomic64_add(&dev_statistics[dev_ll->dev->device_fh].rx_total, 1);
rte_atomic64_add(&dev_statistics[dev_ll->dev->device_fh].rx, ret);
dev_statistics[dev->device_fh].tx_total++;
dev_statistics[dev->device_fh].tx += ret;
}
}
return 0;
}
dev_ll = dev_ll->next;
}
return -1;
}
