233 строки
5.1 KiB
C
233 строки
5.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Interface for implementing AF_XDP zero-copy support in drivers.
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* Copyright(c) 2020 Intel Corporation.
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*/
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#ifndef _LINUX_XDP_SOCK_DRV_H
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#define _LINUX_XDP_SOCK_DRV_H
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#include <net/xdp_sock.h>
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#include <net/xsk_buff_pool.h>
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#ifdef CONFIG_XDP_SOCKETS
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void xsk_umem_complete_tx(struct xdp_umem *umem, u32 nb_entries);
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bool xsk_umem_consume_tx(struct xdp_umem *umem, struct xdp_desc *desc);
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void xsk_umem_consume_tx_done(struct xdp_umem *umem);
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struct xdp_umem *xdp_get_umem_from_qid(struct net_device *dev, u16 queue_id);
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void xsk_set_rx_need_wakeup(struct xdp_umem *umem);
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void xsk_set_tx_need_wakeup(struct xdp_umem *umem);
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void xsk_clear_rx_need_wakeup(struct xdp_umem *umem);
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void xsk_clear_tx_need_wakeup(struct xdp_umem *umem);
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bool xsk_umem_uses_need_wakeup(struct xdp_umem *umem);
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static inline u32 xsk_umem_get_headroom(struct xdp_umem *umem)
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{
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return XDP_PACKET_HEADROOM + umem->headroom;
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}
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static inline u32 xsk_umem_get_chunk_size(struct xdp_umem *umem)
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{
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return umem->chunk_size;
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}
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static inline u32 xsk_umem_get_rx_frame_size(struct xdp_umem *umem)
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{
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return xsk_umem_get_chunk_size(umem) - xsk_umem_get_headroom(umem);
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}
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static inline void xsk_buff_set_rxq_info(struct xdp_umem *umem,
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struct xdp_rxq_info *rxq)
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{
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xp_set_rxq_info(umem->pool, rxq);
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}
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static inline void xsk_buff_dma_unmap(struct xdp_umem *umem,
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unsigned long attrs)
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{
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xp_dma_unmap(umem->pool, attrs);
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}
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static inline int xsk_buff_dma_map(struct xdp_umem *umem, struct device *dev,
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unsigned long attrs)
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{
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return xp_dma_map(umem->pool, dev, attrs, umem->pgs, umem->npgs);
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}
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static inline dma_addr_t xsk_buff_xdp_get_dma(struct xdp_buff *xdp)
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{
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struct xdp_buff_xsk *xskb = container_of(xdp, struct xdp_buff_xsk, xdp);
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return xp_get_dma(xskb);
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}
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static inline dma_addr_t xsk_buff_xdp_get_frame_dma(struct xdp_buff *xdp)
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{
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struct xdp_buff_xsk *xskb = container_of(xdp, struct xdp_buff_xsk, xdp);
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return xp_get_frame_dma(xskb);
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}
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static inline struct xdp_buff *xsk_buff_alloc(struct xdp_umem *umem)
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{
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return xp_alloc(umem->pool);
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}
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static inline bool xsk_buff_can_alloc(struct xdp_umem *umem, u32 count)
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{
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return xp_can_alloc(umem->pool, count);
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}
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static inline void xsk_buff_free(struct xdp_buff *xdp)
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{
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struct xdp_buff_xsk *xskb = container_of(xdp, struct xdp_buff_xsk, xdp);
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xp_free(xskb);
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}
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static inline dma_addr_t xsk_buff_raw_get_dma(struct xdp_umem *umem, u64 addr)
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{
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return xp_raw_get_dma(umem->pool, addr);
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}
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static inline void *xsk_buff_raw_get_data(struct xdp_umem *umem, u64 addr)
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{
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return xp_raw_get_data(umem->pool, addr);
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}
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static inline void xsk_buff_dma_sync_for_cpu(struct xdp_buff *xdp)
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{
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struct xdp_buff_xsk *xskb = container_of(xdp, struct xdp_buff_xsk, xdp);
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xp_dma_sync_for_cpu(xskb);
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}
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static inline void xsk_buff_raw_dma_sync_for_device(struct xdp_umem *umem,
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dma_addr_t dma,
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size_t size)
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{
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xp_dma_sync_for_device(umem->pool, dma, size);
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}
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#else
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static inline void xsk_umem_complete_tx(struct xdp_umem *umem, u32 nb_entries)
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{
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}
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static inline bool xsk_umem_consume_tx(struct xdp_umem *umem,
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struct xdp_desc *desc)
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{
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return false;
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}
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static inline void xsk_umem_consume_tx_done(struct xdp_umem *umem)
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{
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}
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static inline struct xdp_umem *xdp_get_umem_from_qid(struct net_device *dev,
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u16 queue_id)
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{
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return NULL;
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}
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static inline void xsk_set_rx_need_wakeup(struct xdp_umem *umem)
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{
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}
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static inline void xsk_set_tx_need_wakeup(struct xdp_umem *umem)
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{
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}
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static inline void xsk_clear_rx_need_wakeup(struct xdp_umem *umem)
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{
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}
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static inline void xsk_clear_tx_need_wakeup(struct xdp_umem *umem)
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{
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}
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static inline bool xsk_umem_uses_need_wakeup(struct xdp_umem *umem)
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{
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return false;
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}
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static inline u32 xsk_umem_get_headroom(struct xdp_umem *umem)
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{
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return 0;
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}
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static inline u32 xsk_umem_get_chunk_size(struct xdp_umem *umem)
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{
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return 0;
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}
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static inline u32 xsk_umem_get_rx_frame_size(struct xdp_umem *umem)
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{
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return 0;
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}
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static inline void xsk_buff_set_rxq_info(struct xdp_umem *umem,
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struct xdp_rxq_info *rxq)
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{
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}
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static inline void xsk_buff_dma_unmap(struct xdp_umem *umem,
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unsigned long attrs)
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{
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}
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static inline int xsk_buff_dma_map(struct xdp_umem *umem, struct device *dev,
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unsigned long attrs)
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{
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return 0;
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}
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static inline dma_addr_t xsk_buff_xdp_get_dma(struct xdp_buff *xdp)
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{
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return 0;
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}
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static inline dma_addr_t xsk_buff_xdp_get_frame_dma(struct xdp_buff *xdp)
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{
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return 0;
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}
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static inline struct xdp_buff *xsk_buff_alloc(struct xdp_umem *umem)
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{
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return NULL;
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}
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static inline bool xsk_buff_can_alloc(struct xdp_umem *umem, u32 count)
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{
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return false;
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}
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static inline void xsk_buff_free(struct xdp_buff *xdp)
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{
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}
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static inline dma_addr_t xsk_buff_raw_get_dma(struct xdp_umem *umem, u64 addr)
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{
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return 0;
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}
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static inline void *xsk_buff_raw_get_data(struct xdp_umem *umem, u64 addr)
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{
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return NULL;
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}
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static inline void xsk_buff_dma_sync_for_cpu(struct xdp_buff *xdp)
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{
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}
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static inline void xsk_buff_raw_dma_sync_for_device(struct xdp_umem *umem,
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dma_addr_t dma,
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size_t size)
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{
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}
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#endif /* CONFIG_XDP_SOCKETS */
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#endif /* _LINUX_XDP_SOCK_DRV_H */
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