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app/testpmd: prefetch data in the forwarding loop

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prefetch the next packet data address in advance in forwarding loop
for performance improvement.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
This commit is contained in:
Jerin Jacob 2016-05-03 19:37:45 +05:30 committed by Thomas Monjalon
parent d1eb542e05
commit 7fdb263bbb
5 changed files with 15 additions and 0 deletions
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3
app/test-pmd/csumonly.c
View File

@ -676,6 +676,9 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
info.tso_segsz = txp->tso_segsz;
for (i = 0; i < nb_rx; i++) {
if (likely(i < nb_rx - 1))
rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
void *));
ol_flags = 0;
info.is_tunnel = 0;

3
app/test-pmd/icmpecho.c
View File

@ -346,6 +346,9 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs)
fs->rx_packets += nb_rx;
nb_replies = 0;
for (i = 0; i < nb_rx; i++) {
if (likely(i < nb_rx - 1))
rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
void *));
pkt = pkts_burst[i];
eth_h = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
eth_type = RTE_BE_TO_CPU_16(eth_h->ether_type);

3
app/test-pmd/macfwd-retry.c
View File

@ -117,6 +117,9 @@ pkt_burst_mac_retry_forward(struct fwd_stream *fs)
#endif
fs->rx_packets += nb_rx;
for (i = 0; i < nb_rx; i++) {
if (likely(i < nb_rx - 1))
rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
void *));
mb = pkts_burst[i];
eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
ether_addr_copy(&peer_eth_addrs[fs->peer_addr],

3
app/test-pmd/macfwd.c
View File

@ -113,6 +113,9 @@ pkt_burst_mac_forward(struct fwd_stream *fs)
if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ)
ol_flags |= PKT_TX_QINQ_PKT;
for (i = 0; i < nb_rx; i++) {
if (likely(i < nb_rx - 1))
rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
void *));
mb = pkts_burst[i];
eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
ether_addr_copy(&peer_eth_addrs[fs->peer_addr],

3
app/test-pmd/macswap.c
View File

@ -113,6 +113,9 @@ pkt_burst_mac_swap(struct fwd_stream *fs)
if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ)
ol_flags |= PKT_TX_QINQ_PKT;
for (i = 0; i < nb_rx; i++) {
if (likely(i < nb_rx - 1))
rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
void *));
mb = pkts_burst[i];
eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);