diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2025-02-04 13:56:15 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-02-06 16:27:30 -0800 |
| commit | 57afb483015768903029c8336ee287f4b03c1235 (patch) | |
| tree | 8392710f42beb4ff52520185f98df928d2e2d860 /include/net | |
| parent | net: generalise net_iov chunk owners (diff) | |
| download | linux-57afb483015768903029c8336ee287f4b03c1235.tar.gz linux-57afb483015768903029c8336ee287f4b03c1235.zip | |
net: page_pool: create hooks for custom memory providers
A spin off from the original page pool memory providers patch by Jakub,
which allows extending page pools with custom allocators. One of such
providers is devmem TCP, and the other is io_uring zerocopy added in
following patches.
Link: https://lore.kernel.org/netdev/20230707183935.997267-7-kuba@kernel.org/
Co-developed-by: Jakub Kicinski <kuba@kernel.org> # initial mp proposal
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: David Wei <dw@davidwei.uk>
Link: https://patch.msgid.link/20250204215622.695511-5-dw@davidwei.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/page_pool/memory_provider.h | 15 | ||||
| -rw-r--r-- | include/net/page_pool/types.h | 4 |
2 files changed, 19 insertions, 0 deletions
diff --git a/include/net/page_pool/memory_provider.h b/include/net/page_pool/memory_provider.h new file mode 100644 index 000000000000..e49d0a52629d --- /dev/null +++ b/include/net/page_pool/memory_provider.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _NET_PAGE_POOL_MEMORY_PROVIDER_H +#define _NET_PAGE_POOL_MEMORY_PROVIDER_H + +#include <net/netmem.h> +#include <net/page_pool/types.h> + +struct memory_provider_ops { + netmem_ref (*alloc_netmems)(struct page_pool *pool, gfp_t gfp); + bool (*release_netmem)(struct page_pool *pool, netmem_ref netmem); + int (*init)(struct page_pool *pool); + void (*destroy)(struct page_pool *pool); +}; + +#endif diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h index 7f405672b089..36eb57d73abc 100644 --- a/include/net/page_pool/types.h +++ b/include/net/page_pool/types.h @@ -152,8 +152,11 @@ struct page_pool_stats { */ #define PAGE_POOL_FRAG_GROUP_ALIGN (4 * sizeof(long)) +struct memory_provider_ops; + struct pp_memory_provider_params { void *mp_priv; + const struct memory_provider_ops *mp_ops; }; struct page_pool { @@ -216,6 +219,7 @@ struct page_pool { struct ptr_ring ring; void *mp_priv; + const struct memory_provider_ops *mp_ops; #ifdef CONFIG_PAGE_POOL_STATS /* recycle stats are per-cpu to avoid locking */ |