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Message-Id: <20231219210357.4029713-15-dw@davidwei.uk> Date: Tue, 19 Dec 2023 13:03:51 -0800 From: David Wei <dw@...idwei.uk> To: io-uring@...r.kernel.org, netdev@...r.kernel.org Cc: Jens Axboe <axboe@...nel.dk>, Pavel Begunkov <asml.silence@...il.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jesper Dangaard Brouer <hawk@...nel.org>, David Ahern <dsahern@...nel.org>, Mina Almasry <almasrymina@...gle.com> Subject: [RFC PATCH v3 14/20] net: page pool: add io_uring memory provider From: Pavel Begunkov <asml.silence@...il.com> Allow creating a special io_uring pp memory providers, which will be for implementing io_uring zerocopy receive. Signed-off-by: Pavel Begunkov <asml.silence@...il.com> Signed-off-by: David Wei <dw@...idwei.uk> --- include/net/page_pool/types.h | 1 + net/core/page_pool.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h index fd846cac9fb6..f54ee759e362 100644 --- a/include/net/page_pool/types.h +++ b/include/net/page_pool/types.h @@ -129,6 +129,7 @@ struct mem_provider; enum pp_memory_provider_type { __PP_MP_NONE, /* Use system allocator directly */ PP_MP_DMABUF_DEVMEM, /* dmabuf devmem provider */ + PP_MP_IOU_ZCRX, /* io_uring zerocopy receive provider */ }; struct pp_memory_provider_ops { diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 9e3073d61a97..ebf5ff009d9d 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -21,6 +21,7 @@ #include <linux/ethtool.h> #include <linux/netdevice.h> #include <linux/genalloc.h> +#include <linux/io_uring/net.h> #include <trace/events/page_pool.h> @@ -242,6 +243,11 @@ static int page_pool_init(struct page_pool *pool, case PP_MP_DMABUF_DEVMEM: pool->mp_ops = &dmabuf_devmem_ops; break; +#if defined(CONFIG_IO_URING) + case PP_MP_IOU_ZCRX: + pool->mp_ops = &io_uring_pp_zc_ops; + break; +#endif default: err = -EINVAL; goto free_ptr_ring; -- 2.39.3
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