linux/net/xdp/xdp_umem.h
Magnus Karlsson ac98d8aab6 xsk: wire upp Tx zero-copy functions
Here we add the functionality required to support zero-copy Tx, and
also exposes various zero-copy related functions for the netdevs.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-05 15:48:34 +02:00

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940 B
C

/* 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_ */