Date: Thu, 10 Aug 2023 00:06:54 GMT From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 517e0978db1f - main - LinuxKPI: add page pool skeleton Message-ID: <202308100006.37A06sow092166@gitrepo.freebsd.org>
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The branch main has been updated by bz: URL: https://cgit.FreeBSD.org/src/commit/?id=517e0978db1ff92d9f2b86fe735aba24bca72038 commit 517e0978db1ff92d9f2b86fe735aba24bca72038 Author: Bjoern A. Zeeb <bz@FreeBSD.org> AuthorDate: 2023-05-23 23:15:57 +0000 Commit: Bjoern A. Zeeb <bz@FreeBSD.org> CommitDate: 2023-08-10 00:05:48 +0000 LinuxKPI: add page pool skeleton Add the page pool skeleton based on a wireless driver. We have to sort out some struct page problems first before we can start implementing this but that should happen independent of all other changes. MFC after: 10 days Reviewed by: emaste Differential Revision: https://reviews.freebsd.org/D40250 --- sys/compat/linuxkpi/common/include/net/page_pool.h | 119 +++++++++++++++++++++ 1 file changed, 119 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/net/page_pool.h b/sys/compat/linuxkpi/common/include/net/page_pool.h new file mode 100644 index 000000000000..4377ec1d53d4 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/net/page_pool.h @@ -0,0 +1,119 @@ +/*- + * Copyright (c) 2023 Bjoern A. Zeeb + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _LINUXKPI_NET_PAGE_POOL_H +#define _LINUXKPI_NET_PAGE_POOL_H + +#include <linux/kernel.h> /* pr_debug */ +#include <linux/types.h> +#include <linux/dma-mapping.h> + +struct device; + +struct page_pool_params { + struct device *dev; + uint32_t flags; + uint32_t order; + uint32_t pool_size; + uint32_t max_len; + uint32_t offset; + int nid; /* NUMA */ + enum dma_data_direction dma_dir; +}; + +struct page_pool { +}; + +#define PP_FLAG_DMA_MAP BIT(0) +#define PP_FLAG_DMA_SYNC_DEV BIT(1) +#define PP_FLAG_PAGE_FRAG BIT(2) + +static inline struct page_pool * +page_pool_create(const struct page_pool_params *ppparams) +{ + + pr_debug("%s: TODO\n", __func__); + return (NULL); +} + +static inline void +page_pool_destroy(struct page_pool *ppool) +{ + + pr_debug("%s: TODO\n", __func__); +} + +static inline struct page * +page_pool_dev_alloc_frag(struct page_pool *ppool, uint32_t *offset, + size_t size) +{ + + pr_debug("%s: TODO\n", __func__); + return (NULL); +} + +static inline dma_addr_t +page_pool_get_dma_addr(struct page *page) +{ + + pr_debug("%s: TODO\n", __func__); + return (0); +} + +static inline enum dma_data_direction +page_pool_get_dma_dir(const struct page_pool *ppool) +{ + + pr_debug("%s: TODO\n", __func__); + return (DMA_BIDIRECTIONAL); +} + +static inline void +page_pool_put_full_page(struct page_pool *ppool, struct page *page, + bool allow_direct) +{ + + pr_debug("%s: TODO\n", __func__); +} + +static inline int +page_pool_ethtool_stats_get_count(void) +{ + + pr_debug("%s: TODO\n", __func__); + return (0); +} + +static inline uint8_t * +page_pool_ethtool_stats_get_strings(uint8_t *x) +{ + + pr_debug("%s: TODO\n", __func__); + return (x); +} + +#endif /* _LINUXKPI_NET_PAGE_POOL_H */
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