forked from Minki/linux
ac98d8aab6
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>
31 lines
940 B
C
31 lines
940 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* XDP user-space packet buffer
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* Copyright(c) 2018 Intel Corporation.
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*/
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#ifndef XDP_UMEM_H_
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#define XDP_UMEM_H_
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#include <net/xdp_sock.h>
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static inline char *xdp_umem_get_data(struct xdp_umem *umem, u64 addr)
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{
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return umem->pages[addr >> PAGE_SHIFT].addr + (addr & (PAGE_SIZE - 1));
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}
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static inline dma_addr_t xdp_umem_get_dma(struct xdp_umem *umem, u64 addr)
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{
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return umem->pages[addr >> PAGE_SHIFT].dma + (addr & (PAGE_SIZE - 1));
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}
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int xdp_umem_assign_dev(struct xdp_umem *umem, struct net_device *dev,
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u32 queue_id, u16 flags);
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bool xdp_umem_validate_queues(struct xdp_umem *umem);
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void xdp_get_umem(struct xdp_umem *umem);
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void xdp_put_umem(struct xdp_umem *umem);
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void xdp_add_sk_umem(struct xdp_umem *umem, struct xdp_sock *xs);
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void xdp_del_sk_umem(struct xdp_umem *umem, struct xdp_sock *xs);
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struct xdp_umem *xdp_umem_create(struct xdp_umem_reg *mr);
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#endif /* XDP_UMEM_H_ */
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