net: stmmac: Convert prefetch() to net_prefetch() for received frames

The size of DMA descriptors is 32 bytes at most.
net_prefetch() for received frames, and keep prefetch() for descriptors.

This patch brings ~4.8% driver performance improvement in a TCP RX
throughput test with iPerf tool on a single isolated Cortex-A65 CPU
core, 2.92 Gbits/sec increased to 3.06 Gbits/sec.

Suggested-by: Joe Damato <[email protected]>
Signed-off-by: Furong Xu <[email protected]>
Reviewed-by: Yanteng Si <[email protected]>
Reviewed-by: Larysa Zaremba <[email protected]>
Reviewed-by: Joe Damato <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>

0 files changed, 0 insertions, 0 deletions