xsk: introduce xdp_umem_page

The xdp_umem_page holds the address for a page. Trade memory for
faster lookup. Later, we'll add DMA address here as well.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h
index 3a6cd88..caf343a 100644
--- a/include/net/xdp_sock.h
+++ b/include/net/xdp_sock.h
@@ -20,10 +20,14 @@ struct xdp_umem_props {
 	u64 size;
 };
 
+struct xdp_umem_page {
+	void *addr;
+};
+
 struct xdp_umem {
 	struct xsk_queue *fq;
 	struct xsk_queue *cq;
-	struct page **pgs;
+	struct xdp_umem_page *pages;
 	struct xdp_umem_props props;
 	u32 headroom;
 	u32 chunk_size_nohr;
@@ -32,6 +36,7 @@ struct xdp_umem {
 	unsigned long address;
 	refcount_t users;
 	struct work_struct work;
+	struct page **pgs;
 	u32 npgs;
 };