From 2a637c5b1aaf3b21418fadffad7e56ff27cee6f7 Mon Sep 17 00:00:00 2001 From: Jesper Dangaard Brouer Date: Thu, 14 May 2020 12:51:15 +0200 Subject: xdp: For Intel AF_XDP drivers add XDP frame_sz MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Intel drivers implement native AF_XDP zerocopy in separate C-files, that have its own invocation of bpf_prog_run_xdp(). The setup of xdp_buff is also handled in separately from normal code path. This patch update XDP frame_sz for AF_XDP zerocopy drivers i40e, ice and ixgbe, as the code changes needed are very similar. Introduce a helper function xsk_umem_xdp_frame_sz() for calculating frame size. Signed-off-by: Jesper Dangaard Brouer Signed-off-by: Alexei Starovoitov Acked-by: Björn Töpel Cc: intel-wired-lan@lists.osuosl.org Cc: Magnus Karlsson Link: https://lore.kernel.org/bpf/158945347511.97035.8536753731329475655.stgit@firesoul --- include/net/xdp_sock.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/net/xdp_sock.h') diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h index 67191ccaab85..abd72de25fa4 100644 --- a/include/net/xdp_sock.h +++ b/include/net/xdp_sock.h @@ -236,6 +236,12 @@ static inline u64 xsk_umem_adjust_offset(struct xdp_umem *umem, u64 address, else return address + offset; } + +static inline u32 xsk_umem_xdp_frame_sz(struct xdp_umem *umem) +{ + return umem->chunk_size_nohr + umem->headroom; +} + #else static inline int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) { @@ -366,6 +372,11 @@ static inline u64 xsk_umem_adjust_offset(struct xdp_umem *umem, u64 handle, return 0; } +static inline u32 xsk_umem_xdp_frame_sz(struct xdp_umem *umem) +{ + return 0; +} + static inline int __xsk_map_redirect(struct xdp_sock *xs, struct xdp_buff *xdp) { return -EOPNOTSUPP; -- cgit v1.2.3