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net/enic: add Tx prepare handler

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Like most NICs, this hardware (Cisco VIC) also requires partial
checksum in the packet for checksum offload and TSO. So, add
the tx_pkt_prepare handler like other PMDs do.

Technically, VIC has an offload mode that does not require partial
checksum for non-TSO packets. But, it has no such mode for TSO
packets, making tx_pkt_prepare unavoidable.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
This commit is contained in:
Hyong Youb Kim 2018-01-22 17:05:29 -08:00 committed by Ferruh Yigit
parent 6c45c33058
commit 1e81dbb532
3 changed files with 45 additions and 0 deletions
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2
drivers/net/enic/enic.h
View File

@ -268,6 +268,8 @@ uint16_t enic_dummy_recv_pkts(void *rx_queue,
uint16_t nb_pkts);
uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
uint16_t enic_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
int enic_link_update(struct enic *enic);
void enic_fdir_info(struct enic *enic);

1
drivers/net/enic/enic_ethdev.c
View File

@ -641,6 +641,7 @@ static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
eth_dev->dev_ops = &enicpmd_eth_dev_ops;
eth_dev->rx_pkt_burst = &enic_recv_pkts;
eth_dev->tx_pkt_burst = &enic_xmit_pkts;
eth_dev->tx_pkt_prepare = &enic_prep_pkts;
pdev = RTE_ETH_DEV_TO_PCI(eth_dev);
rte_eth_copy_pci_info(eth_dev, pdev);

42
drivers/net/enic/enic_rxtx.c
View File

@ -5,6 +5,7 @@
#include <rte_mbuf.h>
#include <rte_ethdev_driver.h>
#include <rte_net.h>
#include <rte_prefetch.h>
#include "enic_compat.h"
@ -14,6 +15,15 @@
#include <rte_ip.h>
#include <rte_tcp.h>
#define ENIC_TX_OFFLOAD_MASK ( \
PKT_TX_VLAN_PKT | \
PKT_TX_IP_CKSUM | \
PKT_TX_L4_MASK | \
PKT_TX_TCP_SEG)
#define ENIC_TX_OFFLOAD_NOTSUP_MASK \
(PKT_TX_OFFLOAD_MASK ^ ENIC_TX_OFFLOAD_MASK)
#define RTE_PMD_USE_PREFETCH
#ifdef RTE_PMD_USE_PREFETCH
@ -433,6 +443,38 @@ unsigned int enic_cleanup_wq(__rte_unused struct enic *enic, struct vnic_wq *wq)
return 0;
}
uint16_t enic_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts)
{
int32_t ret;
uint16_t i;
uint64_t ol_flags;
struct rte_mbuf *m;
for (i = 0; i != nb_pkts; i++) {
m = tx_pkts[i];
ol_flags = m->ol_flags;
if (ol_flags & ENIC_TX_OFFLOAD_NOTSUP_MASK) {
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
ret = rte_net_intel_cksum_prepare(m);
if (ret != 0) {
rte_errno = ret;
return i;
}
}
return i;
}
uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts)
{