From ac98d8aab61baf785eb8f099b36daf34fc76a70e Mon Sep 17 00:00:00 2001 From: Magnus Karlsson Date: Mon, 4 Jun 2018 14:05:57 +0200 Subject: 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 Signed-off-by: Daniel Borkmann --- net/xdp/xdp_umem.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'net/xdp/xdp_umem.h') diff --git a/net/xdp/xdp_umem.h b/net/xdp/xdp_umem.h index 674508a32a4d..f11560334f88 100644 --- a/net/xdp/xdp_umem.h +++ b/net/xdp/xdp_umem.h @@ -13,12 +13,18 @@ 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); -void xdp_umem_clear_dev(struct xdp_umem *umem); 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_ */ -- cgit v1.2.3-70-g09d2