net/ena: add Tx preparation

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index dcee8ed..e99bf29 100644 (file)
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -39,6 +39,7 @@
 #include <rte_errno.h>
 #include <rte_version.h>
 #include <rte_eal_memconfig.h>
+#include <rte_net.h>
 
 #include "ena_ethdev.h"
 #include "ena_logs.h"
@@ -168,6 +169,14 @@ static const struct ena_stats ena_stats_ena_com_strings[] = {
 #define PCI_DEVICE_ID_ENA_VF   0xEC20
 #define PCI_DEVICE_ID_ENA_LLQ_VF       0xEC21
 
+#define        ENA_TX_OFFLOAD_MASK     (\
+       PKT_TX_L4_MASK |         \
+       PKT_TX_IP_CKSUM |        \
+       PKT_TX_TCP_SEG)
+
+#define        ENA_TX_OFFLOAD_NOTSUP_MASK      \
+       (PKT_TX_OFFLOAD_MASK ^ ENA_TX_OFFLOAD_MASK)
+
 static struct rte_pci_id pci_id_ena_map[] = {
        { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_VF) },
        { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_LLQ_VF) },
@@ -179,6 +188,8 @@ static int ena_device_init(struct ena_com_dev *ena_dev,
 static int ena_dev_configure(struct rte_eth_dev *dev);
 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
                                  uint16_t nb_pkts);
+static uint16_t eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
+               uint16_t nb_pkts);
 static int ena_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
                              uint16_t nb_desc, unsigned int socket_id,
                              const struct rte_eth_txconf *tx_conf);
@@ -1272,6 +1283,7 @@ static int eth_ena_dev_init(struct rte_eth_dev *eth_dev)
        eth_dev->dev_ops = &ena_dev_ops;
        eth_dev->rx_pkt_burst = &eth_ena_recv_pkts;
        eth_dev->tx_pkt_burst = &eth_ena_xmit_pkts;
+       eth_dev->tx_pkt_prepare = &eth_ena_prep_pkts;
        adapter->rte_eth_dev_data = eth_dev->data;
        adapter->rte_dev = eth_dev;
 
@@ -1572,6 +1584,45 @@ static uint16_t eth_ena_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
        return recv_idx;
 }
 
+static uint16_t
+eth_ena_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
+               uint16_t nb_pkts)
+{
+       int32_t ret;
+       uint32_t i;
+       struct rte_mbuf *m;
+       uint64_t ol_flags;
+
+       for (i = 0; i != nb_pkts; i++) {
+               m = tx_pkts[i];
+               ol_flags = m->ol_flags;
+
+               if ((ol_flags & ENA_TX_OFFLOAD_NOTSUP_MASK) != 0 ||
+                               (ol_flags & PKT_TX_L4_MASK) ==
+                               PKT_TX_SCTP_CKSUM) {
+                       rte_errno = -ENOTSUP;
+                       return i;
+               }
+
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+               ret = rte_validate_tx_offload(m);
+               if (ret != 0) {
+                       rte_errno = ret;
+                       return i;
+               }
+#endif
+               /* ENA doesn't need different phdr cskum for TSO */
+               ret = rte_net_intel_cksum_flags_prepare(m,
+                       ol_flags & ~PKT_TX_TCP_SEG);
+               if (ret != 0) {
+                       rte_errno = ret;
+                       return i;
+               }
+       }
+
+       return i;
+}
+
 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
                                  uint16_t nb_pkts)
 {