On 10/23/24 08:20, Christoph Hellwig wrote:
On Wed, Oct 16, 2024 at 11:52:39AM -0700, David Wei wrote:
From: Pavel Begunkov <asml.silence@xxxxxxxxx>
Currently net_iov stores a pointer to struct dmabuf_genpool_chunk_owner,
which serves as a useful abstraction to share data and provide a
context. However, it's too devmem specific, and we want to reuse it for
other memory providers, and for that we need to decouple net_iov from
devmem. Make net_iov to point to a new base structure called
net_iov_area, which dmabuf_genpool_chunk_owner extends.
We've been there before. Instead of reinventing your own memory
provider please enhance dmabufs for your use case. We don't really
need to build memory buffer abstraction over memory buffer abstraction.
It doesn't care much what kind of memory it is, nor it's important
for internals how it's imported, it's user addresses -> pages for
user convenience sake. All the net_iov setup code is in the page pool
core code. What it does, however, is implementing the user API, so
There is no relevance with dmabufs.
--
Pavel Begunkov
