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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Alexander Lobakin , Maciej Fijalkowski , Larysa Zaremba , Yunsheng Lin , Alexander Duyck , Jesper Dangaard Brouer , Ilias Apalodimas , Simon Horman , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v4 1/6] page_pool: split types and declarations from page_pool.h Date: Fri, 4 Aug 2023 20:05:24 +0200 Message-ID: <20230804180529.2483231-2-aleksander.lobakin@intel.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230804180529.2483231-1-aleksander.lobakin@intel.com> References: <20230804180529.2483231-1-aleksander.lobakin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_NONE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yunsheng Lin Split types and pure function declarations from page_pool.h and add them in page_page/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. Rename page_pool.h to page_pool/helpers.h to have both in one place. Signed-off-by: Yunsheng Lin Suggested-by: Jakub Kicinski Signed-off-by: Alexander Lobakin --- MAINTAINERS | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +- drivers/net/ethernet/engleder/tsnep_main.c | 1 + drivers/net/ethernet/freescale/fec_main.c | 1 + .../net/ethernet/hisilicon/hns3/hns3_enet.c | 1 + .../net/ethernet/hisilicon/hns3/hns3_enet.h | 2 +- drivers/net/ethernet/marvell/mvneta.c | 2 +- drivers/net/ethernet/marvell/mvpp2/mvpp2.h | 2 +- .../net/ethernet/marvell/mvpp2/mvpp2_main.c | 1 + .../marvell/octeontx2/nic/otx2_common.c | 1 + .../ethernet/marvell/octeontx2/nic/otx2_pf.c | 1 + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 1 + drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +- .../ethernet/mellanox/mlx5/core/en/params.c | 1 + .../net/ethernet/mellanox/mlx5/core/en/trap.c | 1 - .../net/ethernet/mellanox/mlx5/core/en/xdp.c | 1 + .../net/ethernet/mellanox/mlx5/core/en_main.c | 2 +- .../net/ethernet/mellanox/mlx5/core/en_rx.c | 2 +- .../ethernet/mellanox/mlx5/core/en_stats.c | 2 +- .../ethernet/microchip/lan966x/lan966x_fdma.c | 1 + .../ethernet/microchip/lan966x/lan966x_main.h | 2 +- drivers/net/ethernet/socionext/netsec.c | 2 +- drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 1 + drivers/net/ethernet/ti/cpsw.c | 2 +- drivers/net/ethernet/ti/cpsw_new.c | 2 +- drivers/net/ethernet/ti/cpsw_priv.c | 2 +- drivers/net/ethernet/wangxun/libwx/wx_lib.c | 2 +- drivers/net/veth.c | 2 +- drivers/net/wireless/mediatek/mt76/mac80211.c | 1 - drivers/net/wireless/mediatek/mt76/mt76.h | 1 + drivers/net/xen-netfront.c | 2 +- include/linux/skbuff.h | 2 +- .../net/{page_pool.h => page_pool/helpers.h} | 242 +----------------- include/net/page_pool/types.h | 238 +++++++++++++++++ include/trace/events/page_pool.h | 2 +- net/bpf/test_run.c | 2 +- net/core/page_pool.c | 2 +- net/core/skbuff.c | 2 +- net/core/xdp.c | 2 +- 41 files changed, 280 insertions(+), 264 deletions(-) rename include/net/{page_pool.h => page_pool/helpers.h} (51%) create mode 100644 include/net/page_pool/types.h diff --git a/MAINTAINERS b/MAINTAINERS index 5e2bb1059ab6..08bcf3a7c482 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -16020,7 +16020,7 @@ M: Ilias Apalodimas L: netdev@vger.kernel.org S: Supported F: Documentation/networking/page_pool.rst -F: include/net/page_pool.h +F: include/net/page_pool/ F: include/trace/events/page_pool.h F: net/core/page_pool.c diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 6a643aae7802..eb168ca983b7 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -54,7 +54,7 @@ #include #include #include -#include +#include #include #include diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c index 2ce46d7affe4..96f5ca778c67 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c @@ -15,7 +15,7 @@ #include #include #include -#include +#include #include "bnxt_hsi.h" #include "bnxt.h" #include "bnxt_xdp.h" diff --git a/drivers/net/ethernet/engleder/tsnep_main.c b/drivers/net/ethernet/engleder/tsnep_main.c index 079f9f6ae21a..f61bd89734c5 100644 --- a/drivers/net/ethernet/engleder/tsnep_main.c +++ b/drivers/net/ethernet/engleder/tsnep_main.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #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 43f14cec91e9..3bd0bf03aedb 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -38,6 +38,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 9f6890059666..e5e37a33fd81 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h index 88af34bbee34..acd756b0c7c9 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h @@ -6,7 +6,7 @@ #include #include -#include +#include #include #include "hnae3.h" diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index acf4f6ba73a6..d483b8c00ec0 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -37,7 +37,7 @@ #include #include #include -#include +#include #include #include diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h index 11e603686a27..e809f91c08fb 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h @@ -16,7 +16,7 @@ #include #include #include -#include +#include #include #include diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index 9e1b596c8f08..eb74ccddb440 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c index 8cdd92dd9762..8336cea16aff 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 #include +#include #include #include diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c index 61f62a6ec662..70b9065f7d10 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 #include #include +#include #include "otx2_reg.h" #include "otx2_common.h" diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 1b89f800f6df..fe05c9020269 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -26,6 +26,7 @@ #include #include #include +#include #include "mtk_eth_soc.h" #include "mtk_wed.h" diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 80d17729e557..4a2470fbad2c 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -18,7 +18,7 @@ #include #include #include -#include +#include #include #include "mtk_ppe.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..e097f336e1c4 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 #include static u8 mlx5e_mpwrq_min_page_shift(struct mlx5_core_dev *mdev) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c b/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c index 201ac7dd338f..698647cc8c0f 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c @@ -1,7 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB /* Copyright (c) 2020 Mellanox Technologies */ -#include #include "en/txrx.h" #include "en/params.h" #include "en/trap.h" diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c index 40589cebb773..12f56d0db0af 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 +#include int mlx5e_xdp_max_mtu(struct mlx5e_params *params, struct mlx5e_xsk_param *xsk) { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 1c820119e438..c8ec6467d4d1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -38,7 +38,7 @@ #include #include #include -#include +#include #include #include #include "eswitch.h" diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index f7bb5f4aaaca..3fd11b0761e0 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -36,7 +36,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c index 4d77055abd4b..07b84d668fcc 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c @@ -38,7 +38,7 @@ #include "en/port.h" #ifdef CONFIG_PAGE_POOL_STATS -#include +#include #endif static unsigned int stats_grps_num(struct mlx5e_priv *priv) diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c b/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c index bd72fbc2220f..3960534ac2ad 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c @@ -2,6 +2,7 @@ #include #include +#include #include "lan966x_main.h" diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h index aebc9154693a..caa9e0533c96 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h @@ -10,7 +10,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index 0dcd6a568b06..f358ea003193 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -15,7 +15,7 @@ #include #include -#include +#include #include #define NETSEC_REG_SOFT_RST 0x104 diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index a6d034968654..3401e888a9f6 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -21,7 +21,7 @@ #include #include #include -#include +#include #include #include diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index e1f1c034d325..380ac6c7046f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include #include "stmmac_ptp.h" diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index f9cd566d1c9b..ca4d4548f85e 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -31,7 +31,7 @@ #include #include #include -#include +#include #include #include diff --git a/drivers/net/ethernet/ti/cpsw_new.c b/drivers/net/ethernet/ti/cpsw_new.c index c61e4e44a78f..0e4f526b1753 100644 --- a/drivers/net/ethernet/ti/cpsw_new.c +++ b/drivers/net/ethernet/ti/cpsw_new.c @@ -30,7 +30,7 @@ #include #include -#include +#include #include #include diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c index ae52cdbcf8cc..0ec85635dfd6 100644 --- a/drivers/net/ethernet/ti/cpsw_priv.c +++ b/drivers/net/ethernet/ti/cpsw_priv.c @@ -18,7 +18,7 @@ #include #include #include -#include +#include #include #include diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c index 2c3f08be8c37..e04d4a5eed7b 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c @@ -3,7 +3,7 @@ #include #include -#include +#include #include #include #include diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 614f3e3efab0..953f6d8f8db0 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -26,7 +26,7 @@ #include #include #include -#include +#include #define DRV_NAME "veth" #define DRV_VERSION "1.0" diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c index 467afef98ba2..c8f7f80746e8 100644 --- a/drivers/net/wireless/mediatek/mt76/mac80211.c +++ b/drivers/net/wireless/mediatek/mt76/mac80211.c @@ -4,7 +4,6 @@ */ #include #include -#include #include "mt76.h" #define CHAN2G(_idx, _freq) { \ diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 6b07b8fafec2..81192a07f17f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -15,6 +15,7 @@ #include #include #include +#include #include "util.h" #include "testmode.h" diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index 47d54d8ea59d..ad29f370034e 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -45,7 +45,7 @@ #include #include #include -#include +#include #include #include diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 16a49ba534e4..888e3d7e74c1 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -32,7 +32,7 @@ #include #include #include -#include +#include #if IS_ENABLED(CONFIG_NF_CONNTRACK) #include #endif diff --git a/include/net/page_pool.h b/include/net/page_pool/helpers.h similarity index 51% rename from include/net/page_pool.h rename to include/net/page_pool/helpers.h index 73d4f786418d..78df91804c87 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool/helpers.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 * - * page_pool.h + * page_pool/helpers.h * Author: Jesper Dangaard Brouer * Copyright (C) 2016 Red Hat, Inc. */ @@ -26,126 +26,12 @@ * will release the DMA mapping and in-flight state accounting. We * hope to lift this requirement in the future. */ -#ifndef _NET_PAGE_POOL_H -#define _NET_PAGE_POOL_H +#ifndef _NET_PAGE_POOL_HELPERS_H +#define _NET_PAGE_POOL_HELPERS_H -#include /* Needed by ptr_ring */ -#include -#include - -#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 - page pool parameters - * @flags: PP_FLAG_DMA_MAP, PP_FLAG_DMA_SYNC_DEV, PP_FLAG_PAGE_FRAG - * @order: 2^order pages on allocation - * @pool_size: size of the ptr_ring - * @nid: NUMA node id to allocate from pages from - * @dev: device, for DMA pre-mapping purposes - * @napi: NAPI which is the sole consumer of pages, otherwise NULL - * @dma_dir: DMA mapping direction - * @max_len: max DMA sync memory size for PP_FLAG_DMA_SYNC_DEV - * @offset: DMA sync address offset for PP_FLAG_DMA_SYNC_DEV - */ -struct page_pool_params { - unsigned int flags; - unsigned int order; - unsigned int pool_size; - int nid; - struct device *dev; - struct napi_struct *napi; - enum dma_data_direction dma_dir; - unsigned int max_len; - unsigned int offset; -/* private: used by test code only */ - void (*init_callback)(struct page *page, void *arg); - void *init_arg; -}; +#include #ifdef CONFIG_PAGE_POOL_STATS -/** - * struct page_pool_alloc_stats - allocation statistics - * @fast: successful fast path allocations - * @slow: slow path order-0 allocations - * @slow_high_order: slow path high order allocations - * @empty: ptr ring is empty, so a slow path allocation was forced - * @refill: an allocation which triggered a refill of the cache - * @waive: pages obtained from the ptr ring that cannot be added to - * the cache due to a NUMA mismatch - */ -struct page_pool_alloc_stats { - u64 fast; - u64 slow; - u64 slow_high_order; - u64 empty; - u64 refill; - u64 waive; -}; - -/** - * struct page_pool_recycle_stats - recycling (freeing) statistics - * @cached: recycling placed page in the page pool cache - * @cache_full: page pool cache was full - * @ring: page placed into the ptr ring - * @ring_full: page released from page pool because the ptr ring was full - * @released_refcnt: page released (and not recycled) because refcnt > 1 - */ -struct page_pool_recycle_stats { - u64 cached; - u64 cache_full; - u64 ring; - u64 ring_full; - u64 released_refcnt; -}; - -/** - * struct page_pool_stats - combined page pool use statistics - * @alloc_stats: see struct page_pool_alloc_stats - * @recycle_stats: see struct page_pool_recycle_stats - * - * Wrapper struct for combining page pool stats with different storage - * requirements. - */ -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); @@ -158,7 +44,6 @@ u64 *page_pool_ethtool_stats_get(u64 *data, void *stats); bool page_pool_get_stats(struct page_pool *pool, struct page_pool_stats *stats); #else - static inline int page_pool_ethtool_stats_get_count(void) { return 0; @@ -173,72 +58,7 @@ 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); /** * page_pool_dev_alloc_pages() - allocate a page. @@ -253,9 +73,6 @@ 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) @@ -278,44 +95,6 @@ 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 -static inline void page_pool_unlink_napi(struct page_pool *pool) -{ -} - -static inline void page_pool_destroy(struct page_pool *pool) -{ -} - -static inline void page_pool_use_xdp_mem(struct page_pool *pool, - void (*disconnect)(void *), - struct xdp_mem_info *mem) -{ -} - -static inline 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); - /* 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 @@ -445,26 +224,15 @@ static inline void page_pool_set_dma_addr(struct page *page, dma_addr_t addr) page->dma_addr_upper = upper_32_bits(addr); } -static inline bool is_page_pool_compiled_in(void) -{ -#ifdef CONFIG_PAGE_POOL - return true; -#else - return false; -#endif -} - 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)) page_pool_update_nid(pool, new_nid); } -#endif /* _NET_PAGE_POOL_H */ +#endif /* _NET_PAGE_POOL_HELPERS_H */ diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h new file mode 100644 index 000000000000..9ac39191bed7 --- /dev/null +++ b/include/net/page_pool/types.h @@ -0,0 +1,238 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _NET_PAGE_POOL_TYPES_H +#define _NET_PAGE_POOL_TYPES_H + +#include +#include + +#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 - page pool parameters + * @flags: PP_FLAG_DMA_MAP, PP_FLAG_DMA_SYNC_DEV, PP_FLAG_PAGE_FRAG + * @order: 2^order pages on allocation + * @pool_size: size of the ptr_ring + * @nid: NUMA node id to allocate from pages from + * @dev: device, for DMA pre-mapping purposes + * @napi: NAPI which is the sole consumer of pages, otherwise NULL + * @dma_dir: DMA mapping direction + * @max_len: max DMA sync memory size for PP_FLAG_DMA_SYNC_DEV + * @offset: DMA sync address offset for PP_FLAG_DMA_SYNC_DEV + */ +struct page_pool_params { + unsigned int flags; + unsigned int order; + unsigned int pool_size; + int nid; + struct device *dev; + struct napi_struct *napi; + enum dma_data_direction dma_dir; + unsigned int max_len; + unsigned int offset; +/* private: used by test code only */ + void (*init_callback)(struct page *page, void *arg); + void *init_arg; +}; + +#ifdef CONFIG_PAGE_POOL_STATS +/** + * struct page_pool_alloc_stats - allocation statistics + * @fast: successful fast path allocations + * @slow: slow path order-0 allocations + * @slow_high_order: slow path high order allocations + * @empty: ptr ring is empty, so a slow path allocation was forced + * @refill: an allocation which triggered a refill of the cache + * @waive: pages obtained from the ptr ring that cannot be added to + * the cache due to a NUMA mismatch + */ +struct page_pool_alloc_stats { + u64 fast; + u64 slow; + u64 slow_high_order; + u64 empty; + u64 refill; + u64 waive; +}; + +/** + * struct page_pool_recycle_stats - recycling (freeing) statistics + * @cached: recycling placed page in the page pool cache + * @cache_full: page pool cache was full + * @ring: page placed into the ptr ring + * @ring_full: page released from page pool because the ptr ring was full + * @released_refcnt: page released (and not recycled) because refcnt > 1 + */ +struct page_pool_recycle_stats { + u64 cached; + u64 cache_full; + u64 ring; + u64 ring_full; + u64 released_refcnt; +}; + +/** + * struct page_pool_stats - combined page pool use statistics + * @alloc_stats: see struct page_pool_alloc_stats + * @recycle_stats: see struct page_pool_recycle_stats + * + * Wrapper struct for combining page pool stats with different storage + * requirements. + */ +struct page_pool_stats { + struct page_pool_alloc_stats alloc_stats; + struct page_pool_recycle_stats recycle_stats; +}; +#endif + +struct page_pool { + struct page_pool_params p; + + struct delayed_work release_dw; + void (*disconnect)(void *pool); + 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); + +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 +static inline void page_pool_unlink_napi(struct page_pool *pool) +{ +} + +static inline void page_pool_destroy(struct page_pool *pool) +{ +} + +static inline void page_pool_use_xdp_mem(struct page_pool *pool, + void (*disconnect)(void *), + struct xdp_mem_info *mem) +{ +} + +static inline 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); + +static inline bool is_page_pool_compiled_in(void) +{ +#ifdef CONFIG_PAGE_POOL + return true; +#else + return false; +#endif +} + +/* 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 */ diff --git a/include/trace/events/page_pool.h b/include/trace/events/page_pool.h index ca534501158b..6834356b2d2a 100644 --- a/include/trace/events/page_pool.h +++ b/include/trace/events/page_pool.h @@ -9,7 +9,7 @@ #include #include -#include +#include TRACE_EVENT(page_pool_release, diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 0aac76c13fd4..57a7a64b84ed 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -15,7 +15,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 5d615a169718..cd28c1f14002 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -10,7 +10,7 @@ #include #include -#include +#include #include #include diff --git a/net/core/skbuff.c b/net/core/skbuff.c index c6f98245582c..d3bed964123c 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -73,7 +73,7 @@ #include #include #include -#include +#include #include #include diff --git a/net/core/xdp.c b/net/core/xdp.c index 8362130bf085..a70670fe9a2d 100644 --- a/net/core/xdp.c +++ b/net/core/xdp.c @@ -14,7 +14,7 @@ #include #include #include -#include +#include #include #include /* struct xdp_mem_allocator */ -- 2.41.0