[linux-2.6-block.git] / net / xdp / xdp_umem.h

/* SPDX-License-Identifier: GPL-2.0 */
/* XDP user-space packet buffer
 * Copyright(c) 2018 Intel Corporation.
 */

#ifndef XDP_UMEM_H_
#define XDP_UMEM_H_

#include <net/xdp_sock.h>

static inline char *xdp_umem_get_data(struct xdp_umem *umem, u64 addr)
{
	return umem->pages[addr >> PAGE_SHIFT].addr + (addr & (PAGE_SIZE - 1));
}

static inline dma_addr_t xdp_umem_get_dma(struct xdp_umem *umem, u64 addr)
{
	return umem->pages[addr >> PAGE_SHIFT].dma + (addr & (PAGE_SIZE - 1));
}

int xdp_umem_assign_dev(struct xdp_umem *umem, struct net_device *dev,
			u32 queue_id, u16 flags);
bool xdp_umem_validate_queues(struct xdp_umem *umem);
void xdp_get_umem(struct xdp_umem *umem);
void xdp_put_umem(struct xdp_umem *umem);
void xdp_add_sk_umem(struct xdp_umem *umem, struct xdp_sock *xs);
void xdp_del_sk_umem(struct xdp_umem *umem, struct xdp_sock *xs);
struct xdp_umem *xdp_umem_create(struct xdp_umem_reg *mr);

#endif /* XDP_UMEM_H_ */
Commit	Line	Data
dac09149 BT	1	/* SPDX-License-Identifier: GPL-2.0 */
dac09149 BT	2	/* XDP user-space packet buffer
c0c77d8f	3	* Copyright(c) 2018 Intel Corporation.
c0c77d8f BT	4	*/
	5
	6	#ifndef XDP_UMEM_H_
	7	#define XDP_UMEM_H_
	8
e61e62b9	9	#include <net/xdp_sock.h>
c0c77d8f	10
bbff2f32	11	static inline char xdp_umem_get_data(struct xdp_umem umem, u64 addr)
c497176c	12	{
8aef7340	13	return umem->pages[addr >> PAGE_SHIFT].addr + (addr & (PAGE_SIZE - 1));
c497176c BT	14	}
c497176c BT	15
ac98d8aa MK	16	static inline dma_addr_t xdp_umem_get_dma(struct xdp_umem *umem, u64 addr)
	17	{
	18	return umem->pages[addr >> PAGE_SHIFT].dma + (addr & (PAGE_SIZE - 1));
	19	}
	20
173d3adb BT	21	int xdp_umem_assign_dev(struct xdp_umem umem, struct net_device dev,
173d3adb BT	22	u32 queue_id, u16 flags);
965a9909	23	bool xdp_umem_validate_queues(struct xdp_umem *umem);
c0c77d8f BT	24	void xdp_get_umem(struct xdp_umem *umem);
c0c77d8f BT	25	void xdp_put_umem(struct xdp_umem *umem);
ac98d8aa MK	26	void xdp_add_sk_umem(struct xdp_umem umem, struct xdp_sock xs);
ac98d8aa MK	27	void xdp_del_sk_umem(struct xdp_umem umem, struct xdp_sock xs);
a49049ea	28	struct xdp_umem xdp_umem_create(struct xdp_umem_reg mr);
c0c77d8f BT	29
c0c77d8f BT	30	#endif /* XDP_UMEM_H_ */