net: stmmac: Switch to zero-copy in non-XDP RX path

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Avoid memcpy in non-XDP RX path by marking all allocated SKBs to
be recycled in the upper network stack.

This patch brings ~11.5% driver performance improvement in a TCP RX
throughput test with iPerf tool on a single isolated Cortex-A65 CPU
core, from 2.18 Gbits/sec increased to 2.43 Gbits/sec.

Signed-off-by: Furong Xu <0x1207@gmail.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Reviewed-by: Yanteng Si <si.yanteng@linux.dev>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

This commit is contained in:

Furong Xu 2025-01-15 11:27:02 +08:00 • committed by Paolo Abeni

parent 0b21051a4a

commit df542f6693

2 changed files with 18 additions and 9 deletions

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1

drivers/net/ethernet/stmicro/stmmac/stmmac.h

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26

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

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