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sys/compat/linuxkpi/common/include/net/page_pool.h
- This file was added.
| /*- | |||||
| * 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) | |||||
| { | |||||
emaste: looks like this should take another arg?
| |||||
Done Inline ActionsBased on what? Have they changed things already again? Based on roughly v6.4-rc1 driver I see: page = page_pool_dev_alloc_frag(q->page_pool, offset, size); bz: Based on what? Have they changed things already again? Based on roughly v6.4-rc1 driver I see… | |||||
Done Inline Actions@emaste based on what was your comment suggesting another argument? Did you check an older version of Linux and they have changed it? bz: @emaste based on what was your comment suggesting another argument? Did you check an older… | |||||
Not Done Inline ActionsHmm, good question - looking now, I'm not sure what I was thinking. emaste: Hmm, good question - looking now, I'm not sure what I was thinking. | |||||
| 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) | |||||
| { | |||||
Done Inline Actionscould this be const? (even if not matching linux) emaste: could this be const? (even if not matching linux) | |||||
Done Inline ActionsProbably. Given the input I get from the driver wasn't const I hadn't put thought into it yet. Not sure what Linux does. I'll change it. bz: Probably. Given the input I get from the driver wasn't const I hadn't put thought into it yet. | |||||
| 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 */ | |||||
looks like this should take another arg?