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authorLorenzo Bianconi <lorenzo@kernel.org>2020-05-28 22:47:28 +0200
committerAlexei Starovoitov <ast@kernel.org>2020-06-01 15:02:53 -0700
commitfc37987265b5979129a72c672b20245119768fb8 (patch)
tree0db2d17cad54922b10d061997f7d1d7db7cf6f02 /include/net
parentc48a24f00e7a8b90c817e3f7aa800a3150bb83d0 (diff)
downloadlinux-fc37987265b5979129a72c672b20245119768fb8.tar.bz2
xdp: Introduce xdp_convert_frame_to_buff utility routine
Introduce xdp_convert_frame_to_buff utility routine to initialize xdp_buff fields from xdp_frames ones. Rely on xdp_convert_frame_to_buff in veth xdp code. Suggested-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Link: https://lore.kernel.org/bpf/87acf133073c4b2d4cbb8097e8c2480c0a0fac32.1590698295.git.lorenzo@kernel.org
Diffstat (limited to 'include/net')
-rw-r--r--include/net/xdp.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/xdp.h b/include/net/xdp.h
index d54022959491..db5c2c687f48 100644
--- a/include/net/xdp.h
+++ b/include/net/xdp.h
@@ -111,6 +111,16 @@ void xdp_warn(const char *msg, const char *func, const int line);
struct xdp_frame *xdp_convert_zc_to_xdp_frame(struct xdp_buff *xdp);
+static inline
+void xdp_convert_frame_to_buff(struct xdp_frame *frame, struct xdp_buff *xdp)
+{
+ xdp->data_hard_start = frame->data - frame->headroom - sizeof(*frame);
+ xdp->data = frame->data;
+ xdp->data_end = frame->data + frame->len;
+ xdp->data_meta = frame->data - frame->metasize;
+ xdp->frame_sz = frame->frame_sz;
+}
+
/* Convert xdp_buff to xdp_frame */
static inline
struct xdp_frame *convert_to_xdp_frame(struct xdp_buff *xdp)