eth_dev->data->dev_flags = dev_flags;
/* reset device and negotiate default features */
- ret = virtio_init_device(eth_dev, VIRTIO_PMD_GUEST_FEATURES);
+ ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
if (ret < 0)
return ret;
int ret;
PMD_INIT_LOG(DEBUG, "configure");
+ req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
+ if (rxmode->hw_ip_checksum)
+ req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
- if (rxmode->hw_ip_checksum) {
- PMD_DRV_LOG(ERR, "HW IP checksum not supported");
- return -EINVAL;
- }
-
- req_features = VIRTIO_PMD_GUEST_FEATURES;
/* if request features changed, reinit the device */
if (req_features != hw->req_guest_features) {
ret = virtio_init_device(dev, req_features);
return ret;
}
+ if (rxmode->hw_ip_checksum &&
+ !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
+ PMD_DRV_LOG(NOTICE,
+ "rx ip checksum not available on this host");
+ return -ENOTSUP;
+ }
+
/* Setup and start control queue */
if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
ret = virtio_dev_cq_queue_setup(dev,
dev_info->default_txconf = (struct rte_eth_txconf) {
.txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
};
+ dev_info->rx_offload_capa =
+ DEV_RX_OFFLOAD_TCP_CKSUM |
+ DEV_RX_OFFLOAD_UDP_CKSUM;
}
/*
#include <rte_errno.h>
#include <rte_byteorder.h>
#include <rte_cpuflags.h>
+#include <rte_net.h>
+#include <rte_ip.h>
#include "virtio_logs.h"
#include "virtio_ethdev.h"
}
}
+/* Optionally fill offload information in structure */
+static int
+virtio_rx_offload(struct rte_mbuf *m, struct virtio_net_hdr *hdr)
+{
+ struct rte_net_hdr_lens hdr_lens;
+ uint32_t hdrlen, ptype;
+ int l4_supported = 0;
+
+ /* nothing to do */
+ if (hdr->flags == 0 && hdr->gso_type == VIRTIO_NET_HDR_GSO_NONE)
+ return 0;
+
+ m->ol_flags |= PKT_RX_IP_CKSUM_UNKNOWN;
+
+ ptype = rte_net_get_ptype(m, &hdr_lens, RTE_PTYPE_ALL_MASK);
+ m->packet_type = ptype;
+ if ((ptype & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP ||
+ (ptype & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP ||
+ (ptype & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_SCTP)
+ l4_supported = 1;
+
+ if (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) {
+ hdrlen = hdr_lens.l2_len + hdr_lens.l3_len + hdr_lens.l4_len;
+ if (hdr->csum_start <= hdrlen && l4_supported) {
+ m->ol_flags |= PKT_RX_L4_CKSUM_NONE;
+ } else {
+ /* Unknown proto or tunnel, do sw cksum. We can assume
+ * the cksum field is in the first segment since the
+ * buffers we provided to the host are large enough.
+ * In case of SCTP, this will be wrong since it's a CRC
+ * but there's nothing we can do.
+ */
+ uint16_t csum, off;
+
+ rte_raw_cksum_mbuf(m, hdr->csum_start,
+ rte_pktmbuf_pkt_len(m) - hdr->csum_start,
+ &csum);
+ if (likely(csum != 0xffff))
+ csum = ~csum;
+ off = hdr->csum_offset + hdr->csum_start;
+ if (rte_pktmbuf_data_len(m) >= off + 1)
+ *rte_pktmbuf_mtod_offset(m, uint16_t *,
+ off) = csum;
+ }
+ } else if (hdr->flags & VIRTIO_NET_HDR_F_DATA_VALID && l4_supported) {
+ m->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
+ }
+
+ return 0;
+}
+
+static inline int
+rx_offload_enabled(struct virtio_hw *hw)
+{
+ return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM);
+}
+
#define VIRTIO_MBUF_BURST_SZ 64
#define DESC_PER_CACHELINE (RTE_CACHE_LINE_SIZE / sizeof(struct vring_desc))
uint16_t
int error;
uint32_t i, nb_enqueued;
uint32_t hdr_size;
+ int offload;
+ struct virtio_net_hdr *hdr;
nb_used = VIRTQUEUE_NUSED(vq);
nb_rx = 0;
nb_enqueued = 0;
hdr_size = hw->vtnet_hdr_size;
+ offload = rx_offload_enabled(hw);
for (i = 0; i < num ; i++) {
rxm = rcv_pkts[i];
rxm->pkt_len = (uint32_t)(len[i] - hdr_size);
rxm->data_len = (uint16_t)(len[i] - hdr_size);
+ hdr = (struct virtio_net_hdr *)((char *)rxm->buf_addr +
+ RTE_PKTMBUF_HEADROOM - hdr_size);
+
if (hw->vlan_strip)
rte_vlan_strip(rxm);
+ if (offload && virtio_rx_offload(rxm, hdr) < 0) {
+ virtio_discard_rxbuf(vq, rxm);
+ rxvq->stats.errors++;
+ continue;
+ }
+
VIRTIO_DUMP_PACKET(rxm, rxm->data_len);
rx_pkts[nb_rx++] = rxm;
uint16_t extra_idx;
uint32_t seg_res;
uint32_t hdr_size;
+ int offload;
nb_used = VIRTQUEUE_NUSED(vq);
extra_idx = 0;
seg_res = 0;
hdr_size = hw->vtnet_hdr_size;
+ offload = rx_offload_enabled(hw);
while (i < nb_used) {
struct virtio_net_hdr_mrg_rxbuf *header;
rx_pkts[nb_rx] = rxm;
prev = rxm;
+ if (offload && virtio_rx_offload(rxm, &header->hdr) < 0) {
+ virtio_discard_rxbuf(vq, rxm);
+ rxvq->stats.errors++;
+ continue;
+ }
+
seg_res = seg_num - 1;
while (seg_res != 0) {