netdev - [PATCH bpf-next v3 04/15] xsk: move defines only used by AF

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Date:   Tue, 19 May 2020 10:57:13 +0200
From:   Björn Töpel <bjorn.topel@...il.com>
To:     ast@...nel.org, daniel@...earbox.net, davem@...emloft.net,
        kuba@...nel.org, hawk@...nel.org, john.fastabend@...il.com,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        magnus.karlsson@...el.com, jonathan.lemon@...il.com,
        jeffrey.t.kirsher@...el.com
Cc:     Björn Töpel <bjorn.topel@...el.com>,
        maximmi@...lanox.com, maciej.fijalkowski@...el.com
Subject: [PATCH bpf-next v3 04/15] xsk: move defines only used by AF_XDP internals to xsk.h

From: Björn Töpel <bjorn.topel@...el.com>

Move the XSK_NEXT_PG_CONTIG_{MASK,SHIFT}, and
XDP_UMEM_USES_NEED_WAKEUP defines from xdp_sock.h to the AF_XDP
internal xsk.h file. Also, start using the BIT{,_ULL} macro instead of
explicit shifts.

Signed-off-by: Björn Töpel <bjorn.topel@...el.com>
---
 include/net/xdp_sock.h | 14 --------------
 net/xdp/xsk.h          | 14 ++++++++++++++
 net/xdp/xsk_queue.h    |  2 ++
 3 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h
index 6a986dcbc336..fb7fe3060175 100644
--- a/include/net/xdp_sock.h
+++ b/include/net/xdp_sock.h
@@ -17,13 +17,6 @@ struct net_device;
 struct xsk_queue;
 struct xdp_buff;
 
-/* Masks for xdp_umem_page flags.
- * The low 12-bits of the addr will be 0 since this is the page address, so we
- * can use them for flags.
- */
-#define XSK_NEXT_PG_CONTIG_SHIFT 0
-#define XSK_NEXT_PG_CONTIG_MASK (1ULL << XSK_NEXT_PG_CONTIG_SHIFT)
-
 struct xdp_umem_page {
 	void *addr;
 	dma_addr_t dma;
@@ -35,13 +28,6 @@ struct xdp_umem_fq_reuse {
 	u64 handles[];
 };
 
-/* Flags for the umem flags field.
- *
- * The NEED_WAKEUP flag is 1 due to the reuse of the flags field for public
- * flags. See inlude/uapi/include/linux/if_xdp.h.
- */
-#define XDP_UMEM_USES_NEED_WAKEUP (1 << 1)
-
 struct xdp_umem {
 	struct xsk_queue *fq;
 	struct xsk_queue *cq;
diff --git a/net/xdp/xsk.h b/net/xdp/xsk.h
index d6a0979050e6..455ddd480f3d 100644
--- a/net/xdp/xsk.h
+++ b/net/xdp/xsk.h
@@ -4,6 +4,20 @@
 #ifndef XSK_H_
 #define XSK_H_
 
+/* Masks for xdp_umem_page flags.
+ * The low 12-bits of the addr will be 0 since this is the page address, so we
+ * can use them for flags.
+ */
+#define XSK_NEXT_PG_CONTIG_SHIFT 0
+#define XSK_NEXT_PG_CONTIG_MASK BIT_ULL(XSK_NEXT_PG_CONTIG_SHIFT)
+
+/* Flags for the umem flags field.
+ *
+ * The NEED_WAKEUP flag is 1 due to the reuse of the flags field for public
+ * flags. See inlude/uapi/include/linux/if_xdp.h.
+ */
+#define XDP_UMEM_USES_NEED_WAKEUP BIT(1)
+
 struct xdp_ring_offset_v1 {
 	__u64 producer;
 	__u64 consumer;
diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h
index 648733ec24ac..a322a7dac58c 100644
--- a/net/xdp/xsk_queue.h
+++ b/net/xdp/xsk_queue.h
@@ -10,6 +10,8 @@
 #include <linux/if_xdp.h>
 #include <net/xdp_sock.h>
 
+#include "xsk.h"
+
 struct xdp_ring {
 	u32 producer ____cacheline_aligned_in_smp;
 	u32 consumer ____cacheline_aligned_in_smp;
-- 
2.25.1