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| author | Pavel Begunkov <asml.silence@gmail.com> | 2025-02-04 13:56:20 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-02-06 16:27:31 -0800 |
| commit | 56102c013fa7b8dbba8c5d5f7e042ad5f18cf4ec (patch) | |
| tree | dd9ebe9e069b8648a940da7b4e6cfe925adca615 /include/net/page_pool | |
| parent | net: prepare for non devmem TCP memory providers (diff) | |
| download | linux-56102c013fa7b8dbba8c5d5f7e042ad5f18cf4ec.tar.gz linux-56102c013fa7b8dbba8c5d5f7e042ad5f18cf4ec.zip | |
net: page_pool: add memory provider helpers
Add helpers for memory providers to interact with page pools.
net_mp_niov_{set,clear}_page_pool() serve to [dis]associate a net_iov
with a page pool. If used, the memory provider is responsible to match
"set" calls with "clear" once a net_iov is not going to be used by a page
pool anymore, changing a page pool, etc.
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: David Wei <dw@davidwei.uk>
Link: https://patch.msgid.link/20250204215622.695511-10-dw@davidwei.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/page_pool')
| -rw-r--r-- | include/net/page_pool/memory_provider.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/net/page_pool/memory_provider.h b/include/net/page_pool/memory_provider.h index 36469a7e649f..4f0ffb8f6a0a 100644 --- a/include/net/page_pool/memory_provider.h +++ b/include/net/page_pool/memory_provider.h @@ -18,4 +18,23 @@ struct memory_provider_ops { void (*uninstall)(void *mp_priv, struct netdev_rx_queue *rxq); }; +bool net_mp_niov_set_dma_addr(struct net_iov *niov, dma_addr_t addr); +void net_mp_niov_set_page_pool(struct page_pool *pool, struct net_iov *niov); +void net_mp_niov_clear_page_pool(struct net_iov *niov); + +/** + * net_mp_netmem_place_in_cache() - give a netmem to a page pool + * @pool: the page pool to place the netmem into + * @netmem: netmem to give + * + * Push an accounted netmem into the page pool's allocation cache. The caller + * must ensure that there is space in the cache. It should only be called off + * the mp_ops->alloc_netmems() path. + */ +static inline void net_mp_netmem_place_in_cache(struct page_pool *pool, + netmem_ref netmem) +{ + pool->alloc.cache[pool->alloc.count++] = netmem; +} + #endif |