Re: [PATCH iwl-next v5 2/5] libeth: handle creating pools with unreadable buffers

[Pavel Begunkov]

On 5/5/26 16:29, Alexander Lobakin wrote:
> libeth uses netmems for quite some time already, so in order to
> support unreadable frags / memory providers, it only needs to set
> PP_FLAG_ALLOW_UNREADABLE_NETMEM when needed.
> Also add a couple sanity checks to make sure the driver didn't mess
> up the configuration options and, in case when an MP is installed,
> return the truesize always equal to PAGE_SIZE, so that
> libeth_rx_alloc() will never try to allocate frags. Memory providers
> manage buffers on their own and expect 1:1 buffer / HW Rx descriptor
> association.

Maybe I'm misreading it, but providers don't expect that. It's
fine to use page_pool_alloc_frag_netmem() and friends, just like
bnxt and other drivers do. net_iovs are refcounted in the same
way as normal pages. Hope it helps.

--
Pavel Begunkov