netdev - [bpf-next V2 PATCH 1/5] bpf: Sync kernel ABI header with tooling header for bpf

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Message-ID: <151792884794.16520.17908175139779935350.stgit@firesoul>
Date:   Tue, 06 Feb 2018 15:54:08 +0100
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     netdev@...r.kernel.org, Daniel Borkmann <borkmann@...earbox.net>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        wangnan0@...wei.com
Cc:     jakub.kicinski@...ronome.com, joe@....org, acme@...hat.com,
        eric@...it.org, Jesper Dangaard Brouer <brouer@...hat.com>,
        yhs@...com
Subject: [bpf-next V2 PATCH 1/5] bpf: Sync kernel ABI header with tooling
 header for bpf_common.h

I recently fixed up a lot of commits that forgot to keep the tooling
headers in sync.  And then I forgot to do the same thing in commit
cb5f7334d479 ("bpf: add comments to BPF ld/ldx sizes"). Let correct
that before people notice ;-).

Lawrence did partly fix/sync this for bpf.h in commit d6d4f60c3a09
("bpf: add selftest for tcpbpf").

Fixes: cb5f7334d479 ("bpf: add comments to BPF ld/ldx sizes")
Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com>
---
 tools/include/uapi/linux/bpf_common.h |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/include/uapi/linux/bpf_common.h b/tools/include/uapi/linux/bpf_common.h
index 18be90725ab0..ee97668bdadb 100644
--- a/tools/include/uapi/linux/bpf_common.h
+++ b/tools/include/uapi/linux/bpf_common.h
@@ -15,9 +15,10 @@
 
 /* ld/ldx fields */
 #define BPF_SIZE(code)  ((code) & 0x18)
-#define		BPF_W		0x00
-#define		BPF_H		0x08
-#define		BPF_B		0x10
+#define		BPF_W		0x00 /* 32-bit */
+#define		BPF_H		0x08 /* 16-bit */
+#define		BPF_B		0x10 /*  8-bit */
+/* eBPF		BPF_DW		0x18    64-bit */
 #define BPF_MODE(code)  ((code) & 0xe0)
 #define		BPF_IMM		0x00
 #define		BPF_ABS		0x20