net: enable driver support for netmem TX

Browse source

Drivers need to make sure not to pass netmem dma-addrs to the
dma-mapping API in order to support netmem TX.

Add helpers and netmem_dma_*() helpers that enables special handling of
netmem dma-addrs that drivers can use.

Document in netmem.rst what drivers need to do to support netmem TX.

Signed-off-by: Mina Almasry <almasrymina@google.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250508004830.4100853-7-almasrymina@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

This commit is contained in:

Mina Almasry 2025-05-08 00:48:26 +00:00 • committed by Paolo Abeni

parent 17af8cc06a

commit 383faec0fd

5 changed files with 49 additions and 2 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

1

Documentation/networking/net_cachelines/net_device.rst

View file

5

Documentation/networking/netdev-features.rst

View file

23

Documentation/networking/netmem.rst

View file

2

include/linux/netdevice.h

View file

20

include/net/netmem.h

View file