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 --- include/net/xdp_sock.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/net') diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h index d93d3aac3fc99..9fe472f2ac950 100644 --- a/include/net/xdp_sock.h +++ b/include/net/xdp_sock.h @@ -9,6 +9,7 @@ #include #include #include +#include #include #include @@ -42,6 +43,8 @@ struct xdp_umem { struct net_device *dev; u16 queue_id; bool zc; + spinlock_t xsk_list_lock; + struct list_head xsk_list; }; struct xdp_sock { @@ -53,6 +56,8 @@ struct xdp_sock { struct list_head flush_node; u16 queue_id; struct xsk_queue *tx ____cacheline_aligned_in_smp; + struct list_head list; + bool zc; /* Protects multiple processes in the control path */ struct mutex mutex; u64 rx_dropped; @@ -64,8 +69,12 @@ int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp); int xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp); void xsk_flush(struct xdp_sock *xs); bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs); +/* Used from netdev driver */ u64 *xsk_umem_peek_addr(struct xdp_umem *umem, u64 *addr); void xsk_umem_discard_addr(struct xdp_umem *umem); +void xsk_umem_complete_tx(struct xdp_umem *umem, u32 nb_entries); +bool xsk_umem_consume_tx(struct xdp_umem *umem, dma_addr_t *dma, u32 *len); +void xsk_umem_consume_tx_done(struct xdp_umem *umem); #else static inline int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) { -- cgit v1.2.3