+ if (rxm->udata64 > 1)
+ return (rte_pktmbuf_pkt_len(rxm) - hlen +
+ rxm->udata64 - 1) / rxm->udata64;
+ else
+ return hw->mtu - hlen + sizeof(struct rte_ether_hdr);
+}
+
+/* Receive side checksum and other offloads */
+static inline void
+vmxnet3_rx_offload(struct vmxnet3_hw *hw, const Vmxnet3_RxCompDesc *rcd,
+ struct rte_mbuf *rxm, const uint8_t sop)
+{
+ uint64_t ol_flags = rxm->ol_flags;
+ uint32_t packet_type = rxm->packet_type;
+
+ /* Offloads set in sop */
+ if (sop) {
+ /* Set packet type */
+ packet_type |= RTE_PTYPE_L2_ETHER;
+
+ /* Check large packet receive */
+ if (VMXNET3_VERSION_GE_2(hw) &&
+ rcd->type == VMXNET3_CDTYPE_RXCOMP_LRO) {
+ const Vmxnet3_RxCompDescExt *rcde =
+ (const Vmxnet3_RxCompDescExt *)rcd;
+
+ rxm->tso_segsz = rcde->mss;
+ rxm->udata64 = rcde->segCnt;
+ ol_flags |= PKT_RX_LRO;
+ }
+ } else { /* Offloads set in eop */
+ /* Check for RSS */
+ if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE) {
+ ol_flags |= PKT_RX_RSS_HASH;
+ rxm->hash.rss = rcd->rssHash;
+ }
+
+ /* Check for hardware stripped VLAN tag */
+ if (rcd->ts) {
+ ol_flags |= (PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED);
+ rxm->vlan_tci = rte_le_to_cpu_16((uint16_t)rcd->tci);
+ }
+
+ /* Check packet type, checksum errors, etc. */
+ if (rcd->cnc) {
+ ol_flags |= PKT_RX_L4_CKSUM_UNKNOWN;
+ } else {
+ if (rcd->v4) {
+ packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
+
+ if (rcd->ipc)
+ ol_flags |= PKT_RX_IP_CKSUM_GOOD;
+ else
+ ol_flags |= PKT_RX_IP_CKSUM_BAD;
+
+ if (rcd->tuc) {
+ ol_flags |= PKT_RX_L4_CKSUM_GOOD;
+ if (rcd->tcp)
+ packet_type |= RTE_PTYPE_L4_TCP;
+ else
+ packet_type |= RTE_PTYPE_L4_UDP;
+ } else {
+ if (rcd->tcp) {
+ packet_type |= RTE_PTYPE_L4_TCP;
+ ol_flags |= PKT_RX_L4_CKSUM_BAD;
+ } else if (rcd->udp) {
+ packet_type |= RTE_PTYPE_L4_UDP;
+ ol_flags |= PKT_RX_L4_CKSUM_BAD;
+ }
+ }
+ } else if (rcd->v6) {
+ packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
+
+ if (rcd->tuc) {
+ ol_flags |= PKT_RX_L4_CKSUM_GOOD;
+ if (rcd->tcp)
+ packet_type |= RTE_PTYPE_L4_TCP;
+ else
+ packet_type |= RTE_PTYPE_L4_UDP;
+ } else {
+ if (rcd->tcp) {
+ packet_type |= RTE_PTYPE_L4_TCP;
+ ol_flags |= PKT_RX_L4_CKSUM_BAD;
+ } else if (rcd->udp) {
+ packet_type |= RTE_PTYPE_L4_UDP;
+ ol_flags |= PKT_RX_L4_CKSUM_BAD;
+ }
+ }
+ } else {
+ packet_type |= RTE_PTYPE_UNKNOWN;
+ }
+
+ /* Old variants of vmxnet3 do not provide MSS */
+ if ((ol_flags & PKT_RX_LRO) && rxm->tso_segsz == 0)
+ rxm->tso_segsz = vmxnet3_guess_mss(hw,
+ rcd, rxm);