netdev - [PATCH 25/26] netpool: Additional utility functions

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Message-Id: <20221206160537.1092343-1-willy@infradead.org>
Date:   Tue,  6 Dec 2022 16:05:36 +0000
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     Jesper Dangaard Brouer <hawk@...nel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        netdev@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH 25/26] netpool: Additional utility functions

To be folded into earlier commit
---
 include/net/page_pool.h | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index 4878fe30f52c..94bad45ed8d0 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -117,16 +117,28 @@ static inline void *netmem_to_virt(const struct netmem *nmem)
 	return page_to_virt(netmem_page(nmem));
 }
 
+static inline void *netmem_address(const struct netmem *nmem)
+{
+	return page_address(netmem_page(nmem));
+}
+
 static inline int netmem_ref_count(const struct netmem *nmem)
 {
 	return page_ref_count(netmem_page(nmem));
 }
 
+static inline void netmem_get(struct netmem *nmem)
+{
+	struct folio *folio = (struct folio *)nmem;
+
+	folio_get(folio);
+}
+
 static inline void netmem_put(struct netmem *nmem)
 {
 	struct folio *folio = (struct folio *)nmem;
 
-	return folio_put(folio);
+	folio_put(folio);
 }
 
 static inline bool netmem_is_pfmemalloc(const struct netmem *nmem)
@@ -295,6 +307,11 @@ struct page_pool {
 
 struct netmem *page_pool_alloc_netmem(struct page_pool *pool, gfp_t gfp);
 
+static inline struct netmem *page_pool_dev_alloc_netmem(struct page_pool *pool)
+{
+	return page_pool_alloc_netmem(pool, GFP_ATOMIC | __GFP_NOWARN);
+}
+
 static inline
 struct page *page_pool_alloc_pages(struct page_pool *pool, gfp_t gfp)
 {
@@ -452,6 +469,12 @@ static inline void page_pool_recycle_direct(struct page_pool *pool,
 	page_pool_put_full_page(pool, page, true);
 }
 
+static inline void page_pool_recycle_netmem(struct page_pool *pool,
+					    struct netmem *nmem)
+{
+	page_pool_put_full_netmem(pool, nmem, true);
+}
+
 #define PAGE_POOL_DMA_USE_PP_FRAG_COUNT	\
 		(sizeof(dma_addr_t) > sizeof(unsigned long))
 
-- 
2.35.1