gve: Reduce alloc and copy costs in the GQ rx path

Browse source

Previously, even if just one of the many fragments of a 9k packet
required a copy, we'd copy the whole packet into a freshly-allocated
9k-sized linear SKB, and this led to performance issues.

By having a pool of pages to copy into, each fragment can be
independently handled, leading to a reduced incidence of
allocation and copy.

Signed-off-by: Shailend Chand <shailend@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Shailend Chand 2022-10-29 09:53:22 -07:00 • committed by David S. Miller

parent d08b0f8f46

commit 82fd151d38

6 changed files with 338 additions and 266 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

26

drivers/net/ethernet/google/gve/gve.h

View file

2

drivers/net/ethernet/google/gve/gve_ethtool.c

View file

534

drivers/net/ethernet/google/gve/gve_rx.c

View file

2

drivers/net/ethernet/google/gve/gve_rx_dqo.c

View file

28

drivers/net/ethernet/google/gve/gve_utils.c

View file

2

drivers/net/ethernet/google/gve/gve_utils.h

View file