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net: page_pool: create page_pool_alloc_netmem

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Create page_pool_alloc_netmem to be the mirror of page_pool_alloc.

This enables drivers that want currently use page_pool_alloc to
transition to netmem by converting the call sites to
page_pool_alloc_netmem.

Signed-off-by: Mina Almasry <almasrymina@google.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241211212033.1684197-3-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Mina Almasry
2024-12-11 21:20:29 +00:00
committed by Jakub Kicinski
parent 91a152cbb4
commit 8156c31049
1 changed files with 16 additions and 9 deletions
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25
include/net/page_pool/helpers.h
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@@ -115,22 +115,22 @@ static inline struct page *page_pool_dev_alloc_frag(struct page_pool *pool,
return page_pool_alloc_frag(pool, offset, size, gfp);
}
static inline struct page *page_pool_alloc(struct page_pool *pool,
unsigned int *offset,
unsigned int *size, gfp_t gfp)
static inline netmem_ref page_pool_alloc_netmem(struct page_pool *pool,
unsigned int *offset,
unsigned int *size, gfp_t gfp)
{
unsigned int max_size = PAGE_SIZE << pool->p.order;
struct page *page;
netmem_ref netmem;
if ((*size << 1) > max_size) {
*size = max_size;
*offset = 0;
return page_pool_alloc_pages(pool, gfp);
return page_pool_alloc_netmems(pool, gfp);
}
page = page_pool_alloc_frag(pool, offset, *size, gfp);
if (unlikely(!page))
return NULL;
netmem = page_pool_alloc_frag_netmem(pool, offset, *size, gfp);
if (unlikely(!netmem))
return 0;
/* There is very likely not enough space for another fragment, so append
* the remaining size to the current fragment to avoid truesize
@@ -141,7 +141,14 @@ static inline struct page *page_pool_alloc(struct page_pool *pool,
pool->frag_offset = max_size;
}
return page;
return netmem;
}
static inline struct page *page_pool_alloc(struct page_pool *pool,
unsigned int *offset,
unsigned int *size, gfp_t gfp)
{
return netmem_to_page(page_pool_alloc_netmem(pool, offset, size, gfp));
}
/**