[PATCH net-next v2] page_pool: split types and declarations from page_pool.h
Ilias Apalodimas
ilias.apalodimas at linaro.org
Tue Jul 25 07:42:28 PDT 2023
Hi Yunsheng, all
On Tue, Jul 25, 2023 at 09:12:55PM +0800, Yunsheng Lin wrote:
> Split types and pure function declarations from page_pool.h
> and add them in page_pool/types.h, so that C sources can
> include page_pool.h and headers should generally only include
> page_pool/types.h as suggested by jakub.
>
Apologies for the very late replies, I was on long vacation with limited
internet access.
Yunsheng, since there's been a few mails and I lost track, this is instead of
[0] right? If so, I prefer this approach. It looks ok on a first quick pass,
I'll have a closer look later.
[0] https://lore.kernel.org/netdev/20230714170853.866018-2-aleksander.lobakin@intel.com/
Thanks
/Ilias
> Signed-off-by: Yunsheng Lin <linyunsheng at huawei.com>
> Suggested-by: Jakub Kicinski <kuba at kernel.org>
> CC: Alexander Lobakin <aleksander.lobakin at intel.com>
> ---
> V2: Move from page_pool_types.h to page_pool/types.h, fix
> some typo and alphabetic sorting.
> ---
> MAINTAINERS | 1 +
> drivers/net/ethernet/engleder/tsnep_main.c | 1 +
> drivers/net/ethernet/freescale/fec_main.c | 1 +
> .../marvell/octeontx2/nic/otx2_common.c | 1 +
> .../ethernet/marvell/octeontx2/nic/otx2_pf.c | 1 +
> .../ethernet/mellanox/mlx5/core/en/params.c | 1 +
> .../net/ethernet/mellanox/mlx5/core/en/xdp.c | 1 +
> drivers/net/wireless/mediatek/mt76/mt76.h | 1 +
> include/linux/skbuff.h | 2 +-
> include/net/page_pool.h | 192 +----------------
> include/net/page_pool/types.h | 193 ++++++++++++++++++
> 11 files changed, 206 insertions(+), 189 deletions(-)
> create mode 100644 include/net/page_pool/types.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index d0553ad37865..1dbfe7fcb10e 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -16016,6 +16016,7 @@ L: netdev at vger.kernel.org
> S: Supported
> F: Documentation/networking/page_pool.rst
> F: include/net/page_pool.h
> +F: include/net/page_pool_types.h
> F: include/trace/events/page_pool.h
> F: net/core/page_pool.c
>
> diff --git a/drivers/net/ethernet/engleder/tsnep_main.c b/drivers/net/ethernet/engleder/tsnep_main.c
> index 079f9f6ae21a..934b890ba2ab 100644
> --- a/drivers/net/ethernet/engleder/tsnep_main.c
> +++ b/drivers/net/ethernet/engleder/tsnep_main.c
> @@ -28,6 +28,7 @@
> #include <linux/iopoll.h>
> #include <linux/bpf.h>
> #include <linux/bpf_trace.h>
> +#include <net/page_pool.h>
> #include <net/xdp_sock_drv.h>
>
> #define TSNEP_RX_OFFSET (max(NET_SKB_PAD, XDP_PACKET_HEADROOM) + NET_IP_ALIGN)
> diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
> index 03ac7690b5c4..68b79bda632a 100644
> --- a/drivers/net/ethernet/freescale/fec_main.c
> +++ b/drivers/net/ethernet/freescale/fec_main.c
> @@ -38,6 +38,7 @@
> #include <linux/in.h>
> #include <linux/ip.h>
> #include <net/ip.h>
> +#include <net/page_pool.h>
> #include <net/selftests.h>
> #include <net/tso.h>
> #include <linux/tcp.h>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
> index 8cdd92dd9762..d4f1baf0f987 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
> @@ -7,6 +7,7 @@
>
> #include <linux/interrupt.h>
> #include <linux/pci.h>
> +#include <net/page_pool.h>
> #include <net/tso.h>
> #include <linux/bitfield.h>
>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> index 9551b422622a..8807e40b1174 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> @@ -16,6 +16,7 @@
> #include <linux/bpf.h>
> #include <linux/bpf_trace.h>
> #include <linux/bitfield.h>
> +#include <net/page_pool.h>
>
> #include "otx2_reg.h"
> #include "otx2_common.h"
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
> index 5ce28ff7685f..0f152f14165b 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
> @@ -6,6 +6,7 @@
> #include "en/port.h"
> #include "en_accel/en_accel.h"
> #include "en_accel/ipsec.h"
> +#include <net/page_pool.h>
> #include <net/xdp_sock_drv.h>
>
> static u8 mlx5e_mpwrq_min_page_shift(struct mlx5_core_dev *mdev)
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> index 40589cebb773..16038c23b7d8 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> @@ -35,6 +35,7 @@
> #include "en/xdp.h"
> #include "en/params.h"
> #include <linux/bitfield.h>
> +#include <net/page_pool.h>
>
> int mlx5e_xdp_max_mtu(struct mlx5e_params *params, struct mlx5e_xsk_param *xsk)
> {
> diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
> index 6b07b8fafec2..95c16f11d156 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt76.h
> +++ b/drivers/net/wireless/mediatek/mt76/mt76.h
> @@ -15,6 +15,7 @@
> #include <linux/average.h>
> #include <linux/soc/mediatek/mtk_wed.h>
> #include <net/mac80211.h>
> +#include <net/page_pool.h>
> #include "util.h"
> #include "testmode.h"
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index faaba050f843..864c51c95ac4 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -32,7 +32,7 @@
> #include <linux/if_packet.h>
> #include <linux/llist.h>
> #include <net/flow.h>
> -#include <net/page_pool.h>
> +#include <net/page_pool/types.h>
> #if IS_ENABLED(CONFIG_NF_CONNTRACK)
> #include <linux/netfilter/nf_conntrack_common.h>
> #endif
> diff --git a/include/net/page_pool.h b/include/net/page_pool.h
> index f1d5cc1fa13b..dd70474c67cc 100644
> --- a/include/net/page_pool.h
> +++ b/include/net/page_pool.h
> @@ -29,107 +29,9 @@
> #ifndef _NET_PAGE_POOL_H
> #define _NET_PAGE_POOL_H
>
> -#include <linux/mm.h> /* Needed by ptr_ring */
> -#include <linux/ptr_ring.h>
> -#include <linux/dma-direction.h>
> -
> -#define PP_FLAG_DMA_MAP BIT(0) /* Should page_pool do the DMA
> - * map/unmap
> - */
> -#define PP_FLAG_DMA_SYNC_DEV BIT(1) /* If set all pages that the driver gets
> - * from page_pool will be
> - * DMA-synced-for-device according to
> - * the length provided by the device
> - * driver.
> - * Please note DMA-sync-for-CPU is still
> - * device driver responsibility
> - */
> -#define PP_FLAG_PAGE_FRAG BIT(2) /* for page frag feature */
> -#define PP_FLAG_ALL (PP_FLAG_DMA_MAP |\
> - PP_FLAG_DMA_SYNC_DEV |\
> - PP_FLAG_PAGE_FRAG)
> -
> -/*
> - * Fast allocation side cache array/stack
> - *
> - * The cache size and refill watermark is related to the network
> - * use-case. The NAPI budget is 64 packets. After a NAPI poll the RX
> - * ring is usually refilled and the max consumed elements will be 64,
> - * thus a natural max size of objects needed in the cache.
> - *
> - * Keeping room for more objects, is due to XDP_DROP use-case. As
> - * XDP_DROP allows the opportunity to recycle objects directly into
> - * this array, as it shares the same softirq/NAPI protection. If
> - * cache is already full (or partly full) then the XDP_DROP recycles
> - * would have to take a slower code path.
> - */
> -#define PP_ALLOC_CACHE_SIZE 128
> -#define PP_ALLOC_CACHE_REFILL 64
> -struct pp_alloc_cache {
> - u32 count;
> - struct page *cache[PP_ALLOC_CACHE_SIZE];
> -};
> -
> -struct page_pool_params {
> - unsigned int flags;
> - unsigned int order;
> - unsigned int pool_size;
> - int nid; /* Numa node id to allocate from pages from */
> - struct device *dev; /* device, for DMA pre-mapping purposes */
> - struct napi_struct *napi; /* Sole consumer of pages, otherwise NULL */
> - enum dma_data_direction dma_dir; /* DMA mapping direction */
> - unsigned int max_len; /* max DMA sync memory size */
> - unsigned int offset; /* DMA addr offset */
> - void (*init_callback)(struct page *page, void *arg);
> - void *init_arg;
> -};
> -
> -#ifdef CONFIG_PAGE_POOL_STATS
> -struct page_pool_alloc_stats {
> - u64 fast; /* fast path allocations */
> - u64 slow; /* slow-path order 0 allocations */
> - u64 slow_high_order; /* slow-path high order allocations */
> - u64 empty; /* failed refills due to empty ptr ring, forcing
> - * slow path allocation
> - */
> - u64 refill; /* allocations via successful refill */
> - u64 waive; /* failed refills due to numa zone mismatch */
> -};
> -
> -struct page_pool_recycle_stats {
> - u64 cached; /* recycling placed page in the cache. */
> - u64 cache_full; /* cache was full */
> - u64 ring; /* recycling placed page back into ptr ring */
> - u64 ring_full; /* page was released from page-pool because
> - * PTR ring was full.
> - */
> - u64 released_refcnt; /* page released because of elevated
> - * refcnt
> - */
> -};
> -
> -/* This struct wraps the above stats structs so users of the
> - * page_pool_get_stats API can pass a single argument when requesting the
> - * stats for the page pool.
> - */
> -struct page_pool_stats {
> - struct page_pool_alloc_stats alloc_stats;
> - struct page_pool_recycle_stats recycle_stats;
> -};
> -
> -int page_pool_ethtool_stats_get_count(void);
> -u8 *page_pool_ethtool_stats_get_strings(u8 *data);
> -u64 *page_pool_ethtool_stats_get(u64 *data, void *stats);
> -
> -/*
> - * Drivers that wish to harvest page pool stats and report them to users
> - * (perhaps via ethtool, debugfs, or another mechanism) can allocate a
> - * struct page_pool_stats call page_pool_get_stats to get stats for the specified pool.
> - */
> -bool page_pool_get_stats(struct page_pool *pool,
> - struct page_pool_stats *stats);
> -#else
> +#include <net/page_pool/types.h>
>
> +#ifndef CONFIG_PAGE_POOL_STATS
> static inline int page_pool_ethtool_stats_get_count(void)
> {
> return 0;
> @@ -144,72 +46,7 @@ static inline u64 *page_pool_ethtool_stats_get(u64 *data, void *stats)
> {
> return data;
> }
> -
> -#endif
> -
> -struct page_pool {
> - struct page_pool_params p;
> -
> - struct delayed_work release_dw;
> - void (*disconnect)(void *);
> - unsigned long defer_start;
> - unsigned long defer_warn;
> -
> - u32 pages_state_hold_cnt;
> - unsigned int frag_offset;
> - struct page *frag_page;
> - long frag_users;
> -
> -#ifdef CONFIG_PAGE_POOL_STATS
> - /* these stats are incremented while in softirq context */
> - struct page_pool_alloc_stats alloc_stats;
> -#endif
> - u32 xdp_mem_id;
> -
> - /*
> - * Data structure for allocation side
> - *
> - * Drivers allocation side usually already perform some kind
> - * of resource protection. Piggyback on this protection, and
> - * require driver to protect allocation side.
> - *
> - * For NIC drivers this means, allocate a page_pool per
> - * RX-queue. As the RX-queue is already protected by
> - * Softirq/BH scheduling and napi_schedule. NAPI schedule
> - * guarantee that a single napi_struct will only be scheduled
> - * on a single CPU (see napi_schedule).
> - */
> - struct pp_alloc_cache alloc ____cacheline_aligned_in_smp;
> -
> - /* Data structure for storing recycled pages.
> - *
> - * Returning/freeing pages is more complicated synchronization
> - * wise, because free's can happen on remote CPUs, with no
> - * association with allocation resource.
> - *
> - * Use ptr_ring, as it separates consumer and producer
> - * effeciently, it a way that doesn't bounce cache-lines.
> - *
> - * TODO: Implement bulk return pages into this structure.
> - */
> - struct ptr_ring ring;
> -
> -#ifdef CONFIG_PAGE_POOL_STATS
> - /* recycle stats are per-cpu to avoid locking */
> - struct page_pool_recycle_stats __percpu *recycle_stats;
> #endif
> - atomic_t pages_state_release_cnt;
> -
> - /* A page_pool is strictly tied to a single RX-queue being
> - * protected by NAPI, due to above pp_alloc_cache. This
> - * refcnt serves purpose is to simplify drivers error handling.
> - */
> - refcount_t user_cnt;
> -
> - u64 destroy_cnt;
> -};
> -
> -struct page *page_pool_alloc_pages(struct page_pool *pool, gfp_t gfp);
>
> static inline struct page *page_pool_dev_alloc_pages(struct page_pool *pool)
> {
> @@ -218,9 +55,6 @@ static inline struct page *page_pool_dev_alloc_pages(struct page_pool *pool)
> return page_pool_alloc_pages(pool, gfp);
> }
>
> -struct page *page_pool_alloc_frag(struct page_pool *pool, unsigned int *offset,
> - unsigned int size, gfp_t gfp);
> -
> static inline struct page *page_pool_dev_alloc_frag(struct page_pool *pool,
> unsigned int *offset,
> unsigned int size)
> @@ -239,20 +73,7 @@ inline enum dma_data_direction page_pool_get_dma_dir(struct page_pool *pool)
> return pool->p.dma_dir;
> }
>
> -bool page_pool_return_skb_page(struct page *page, bool napi_safe);
> -
> -struct page_pool *page_pool_create(const struct page_pool_params *params);
> -
> -struct xdp_mem_info;
> -
> -#ifdef CONFIG_PAGE_POOL
> -void page_pool_unlink_napi(struct page_pool *pool);
> -void page_pool_destroy(struct page_pool *pool);
> -void page_pool_use_xdp_mem(struct page_pool *pool, void (*disconnect)(void *),
> - struct xdp_mem_info *mem);
> -void page_pool_put_page_bulk(struct page_pool *pool, void **data,
> - int count);
> -#else
> +#ifndef CONFIG_PAGE_POOL
> static inline void page_pool_unlink_napi(struct page_pool *pool)
> {
> }
> @@ -261,6 +82,7 @@ static inline void page_pool_destroy(struct page_pool *pool)
> {
> }
>
> +struct xdp_mem_info;
> static inline void page_pool_use_xdp_mem(struct page_pool *pool,
> void (*disconnect)(void *),
> struct xdp_mem_info *mem)
> @@ -273,10 +95,6 @@ static inline void page_pool_put_page_bulk(struct page_pool *pool, void **data,
> }
> #endif
>
> -void page_pool_put_defragged_page(struct page_pool *pool, struct page *page,
> - unsigned int dma_sync_size,
> - bool allow_direct);
> -
> /* pp_frag_count represents the number of writers who can update the page
> * either by updating skb->data or via DMA mappings for the device.
> * We can't rely on the page refcnt for that as we don't know who might be
> @@ -385,8 +203,6 @@ static inline bool page_pool_put(struct page_pool *pool)
> return refcount_dec_and_test(&pool->user_cnt);
> }
>
> -/* Caller must provide appropriate safe context, e.g. NAPI. */
> -void page_pool_update_nid(struct page_pool *pool, int new_nid);
> static inline void page_pool_nid_changed(struct page_pool *pool, int new_nid)
> {
> if (unlikely(pool->p.nid != new_nid))
> diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
> new file mode 100644
> index 000000000000..1d54ba0708db
> --- /dev/null
> +++ b/include/net/page_pool/types.h
> @@ -0,0 +1,193 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +
> +#ifndef _NET_PAGE_POOL_TYPES_H
> +#define _NET_PAGE_POOL_TYPES_H
> +
> +#include <linux/dma-direction.h>
> +#include <linux/ptr_ring.h>
> +
> +#define PP_FLAG_DMA_MAP BIT(0) /* Should page_pool do the DMA
> + * map/unmap
> + */
> +#define PP_FLAG_DMA_SYNC_DEV BIT(1) /* If set all pages that the driver gets
> + * from page_pool will be
> + * DMA-synced-for-device according to
> + * the length provided by the device
> + * driver.
> + * Please note DMA-sync-for-CPU is still
> + * device driver responsibility
> + */
> +#define PP_FLAG_PAGE_FRAG BIT(2) /* for page frag feature */
> +#define PP_FLAG_ALL (PP_FLAG_DMA_MAP |\
> + PP_FLAG_DMA_SYNC_DEV |\
> + PP_FLAG_PAGE_FRAG)
> +
> +/*
> + * Fast allocation side cache array/stack
> + *
> + * The cache size and refill watermark is related to the network
> + * use-case. The NAPI budget is 64 packets. After a NAPI poll the RX
> + * ring is usually refilled and the max consumed elements will be 64,
> + * thus a natural max size of objects needed in the cache.
> + *
> + * Keeping room for more objects, is due to XDP_DROP use-case. As
> + * XDP_DROP allows the opportunity to recycle objects directly into
> + * this array, as it shares the same softirq/NAPI protection. If
> + * cache is already full (or partly full) then the XDP_DROP recycles
> + * would have to take a slower code path.
> + */
> +#define PP_ALLOC_CACHE_SIZE 128
> +#define PP_ALLOC_CACHE_REFILL 64
> +struct pp_alloc_cache {
> + u32 count;
> + struct page *cache[PP_ALLOC_CACHE_SIZE];
> +};
> +
> +struct page_pool_params {
> + unsigned int flags;
> + unsigned int order;
> + unsigned int pool_size;
> + int nid; /* Numa node id to allocate from pages from */
> + struct device *dev; /* device, for DMA pre-mapping purposes */
> + struct napi_struct *napi; /* Sole consumer of pages, otherwise NULL */
> + enum dma_data_direction dma_dir; /* DMA mapping direction */
> + unsigned int max_len; /* max DMA sync memory size */
> + unsigned int offset; /* DMA addr offset */
> + void (*init_callback)(struct page *page, void *arg);
> + void *init_arg;
> +};
> +
> +#ifdef CONFIG_PAGE_POOL_STATS
> +struct page_pool_alloc_stats {
> + u64 fast; /* fast path allocations */
> + u64 slow; /* slow-path order 0 allocations */
> + u64 slow_high_order; /* slow-path high order allocations */
> + u64 empty; /* failed refills due to empty ptr ring, forcing
> + * slow path allocation
> + */
> + u64 refill; /* allocations via successful refill */
> + u64 waive; /* failed refills due to numa zone mismatch */
> +};
> +
> +struct page_pool_recycle_stats {
> + u64 cached; /* recycling placed page in the cache. */
> + u64 cache_full; /* cache was full */
> + u64 ring; /* recycling placed page back into ptr ring */
> + u64 ring_full; /* page was released from page-pool because
> + * PTR ring was full.
> + */
> + u64 released_refcnt; /* page released because of elevated
> + * refcnt
> + */
> +};
> +
> +/* This struct wraps the above stats structs so users of the
> + * page_pool_get_stats API can pass a single argument when requesting the
> + * stats for the page pool.
> + */
> +struct page_pool_stats {
> + struct page_pool_alloc_stats alloc_stats;
> + struct page_pool_recycle_stats recycle_stats;
> +};
> +
> +int page_pool_ethtool_stats_get_count(void);
> +u8 *page_pool_ethtool_stats_get_strings(u8 *data);
> +u64 *page_pool_ethtool_stats_get(u64 *data, void *stats);
> +
> +/*
> + * Drivers that wish to harvest page pool stats and report them to users
> + * (perhaps via ethtool, debugfs, or another mechanism) can allocate a
> + * struct page_pool_stats call page_pool_get_stats to get stats for the
> + * specified pool.
> + */
> +bool page_pool_get_stats(struct page_pool *pool,
> + struct page_pool_stats *stats);
> +#endif
> +
> +struct page_pool {
> + struct page_pool_params p;
> +
> + struct delayed_work release_dw;
> + void (*disconnect)(void *);
> + unsigned long defer_start;
> + unsigned long defer_warn;
> +
> + u32 pages_state_hold_cnt;
> + unsigned int frag_offset;
> + struct page *frag_page;
> + long frag_users;
> +
> +#ifdef CONFIG_PAGE_POOL_STATS
> + /* these stats are incremented while in softirq context */
> + struct page_pool_alloc_stats alloc_stats;
> +#endif
> + u32 xdp_mem_id;
> +
> + /*
> + * Data structure for allocation side
> + *
> + * Drivers allocation side usually already perform some kind
> + * of resource protection. Piggyback on this protection, and
> + * require driver to protect allocation side.
> + *
> + * For NIC drivers this means, allocate a page_pool per
> + * RX-queue. As the RX-queue is already protected by
> + * Softirq/BH scheduling and napi_schedule. NAPI schedule
> + * guarantee that a single napi_struct will only be scheduled
> + * on a single CPU (see napi_schedule).
> + */
> + struct pp_alloc_cache alloc ____cacheline_aligned_in_smp;
> +
> + /* Data structure for storing recycled pages.
> + *
> + * Returning/freeing pages is more complicated synchronization
> + * wise, because free's can happen on remote CPUs, with no
> + * association with allocation resource.
> + *
> + * Use ptr_ring, as it separates consumer and producer
> + * efficiently, it a way that doesn't bounce cache-lines.
> + *
> + * TODO: Implement bulk return pages into this structure.
> + */
> + struct ptr_ring ring;
> +
> +#ifdef CONFIG_PAGE_POOL_STATS
> + /* recycle stats are per-cpu to avoid locking */
> + struct page_pool_recycle_stats __percpu *recycle_stats;
> +#endif
> + atomic_t pages_state_release_cnt;
> +
> + /* A page_pool is strictly tied to a single RX-queue being
> + * protected by NAPI, due to above pp_alloc_cache. This
> + * refcnt serves purpose is to simplify drivers error handling.
> + */
> + refcount_t user_cnt;
> +
> + u64 destroy_cnt;
> +};
> +
> +struct page *page_pool_alloc_pages(struct page_pool *pool, gfp_t gfp);
> +struct page *page_pool_alloc_frag(struct page_pool *pool, unsigned int *offset,
> + unsigned int size, gfp_t gfp);
> +bool page_pool_return_skb_page(struct page *page, bool napi_safe);
> +struct page_pool *page_pool_create(const struct page_pool_params *params);
> +
> +#ifdef CONFIG_PAGE_POOL
> +void page_pool_unlink_napi(struct page_pool *pool);
> +void page_pool_destroy(struct page_pool *pool);
> +
> +struct xdp_mem_info;
> +void page_pool_use_xdp_mem(struct page_pool *pool, void (*disconnect)(void *),
> + struct xdp_mem_info *mem);
> +void page_pool_put_page_bulk(struct page_pool *pool, void **data,
> + int count);
> +#endif
> +
> +void page_pool_put_defragged_page(struct page_pool *pool, struct page *page,
> + unsigned int dma_sync_size,
> + bool allow_direct);
> +
> +/* Caller must provide appropriate safe context, e.g. NAPI. */
> +void page_pool_update_nid(struct page_pool *pool, int new_nid);
> +
> +#endif /* _NET_PAGE_POOL_H */
> --
> 2.33.0
>
More information about the Linux-mediatek
mailing list