net: page_pool: record pools per netdev

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Link the page pools with netdevs. This needs to be netns compatible
so we have two options. Either we record the pools per netns and
have to worry about moving them as the netdev gets moved.
Or we record them directly on the netdev so they move with the netdev
without any extra work.

Implement the latter option. Since pools may outlast netdev we need
a place to store orphans. In time honored tradition use loopback
for this purpose.

Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

This commit is contained in:

Jakub Kicinski 2023-11-26 15:07:30 -08:00 • committed by Paolo Abeni

parent f17c69649c

commit 083772c9f9

5 changed files with 114 additions and 0 deletions

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20

include/linux/list.h

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4

include/linux/netdevice.h

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2

include/linux/poison.h

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4

include/net/page_pool/types.h

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84

net/core/page_pool_user.c

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