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vmxnet3: add Rx check offloads

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Only supports IPv4 so far.

Signed-off-by: Yong Wang <yongwang@vmware.com>
This commit is contained in:
Yong Wang 2014-11-04 17:49:41 -08:00 committed by Thomas Monjalon
parent 5aecdc17a9
commit d768f6273c
1 changed files with 21 additions and 1 deletions
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22
lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c
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@ -65,6 +65,7 @@
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_prefetch.h>
#include <rte_ip.h>
#include <rte_udp.h>
#include <rte_tcp.h>
#include <rte_sctp.h>
@ -614,7 +615,7 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
/* Check for hardware stripped VLAN tag */
if (rcd->ts) {
PMD_RX_LOG(ERR, "Received packet with vlan ID: %d.",
PMD_RX_LOG(DEBUG, "Received packet with vlan ID: %d.",
rcd->tci);
rxm->ol_flags = PKT_RX_VLAN_PKT;
#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER
@ -637,6 +638,25 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
rxm->port = rxq->port_id;
rxm->data_off = RTE_PKTMBUF_HEADROOM;
/* Check packet types, rx checksum errors, etc. Only support IPv4 so far. */
if (rcd->v4) {
struct ether_hdr *eth = rte_pktmbuf_mtod(rxm, struct ether_hdr *);
struct ipv4_hdr *ip = (struct ipv4_hdr *)(eth + 1);
if (((ip->version_ihl & 0xf) << 2) > (int)sizeof(struct ipv4_hdr))
rxm->ol_flags |= PKT_RX_IPV4_HDR_EXT;
else
rxm->ol_flags |= PKT_RX_IPV4_HDR;
if (!rcd->cnc) {
if (!rcd->ipc)
rxm->ol_flags |= PKT_RX_IP_CKSUM_BAD;
if ((rcd->tcp || rcd->udp) && !rcd->tuc)
rxm->ol_flags |= PKT_RX_L4_CKSUM_BAD;
}
}
rx_pkts[nb_rx++] = rxm;
rcd_done:
rxq->cmd_ring[ring_idx].next2comp = idx;