Re: [RFC PATCH net-next v6 02/15] net: page_pool: create hooks for custom page providers
From: David Wei <hidden>
Date: 2024-03-05 21:55:07
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bpf, dri-devel, linux-alpha, linux-arch, linux-doc, linux-kselftest, linux-media, linux-mips, linux-trace-kernel, lkml, sparclinux
On 2024-03-04 18:01, Mina Almasry wrote:
+struct memory_provider_ops {
+ int (*init)(struct page_pool *pool);
+ void (*destroy)(struct page_pool *pool);
+ struct page *(*alloc_pages)(struct page_pool *pool, gfp_t gfp);
+ bool (*release_page)(struct page_pool *pool, struct page *page);For ZC Rx we added a scrub() function to memory_provider_ops that is called from page_pool_scrub(). Does TCP devmem not custom behaviour waiting for all netmem_refs to return before destroying the page pool? What happens if e.g. application crashes?