netdev - [PATCH 6/6] bpf, docs: Fully document the JMP mode modifiers

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Message-Id: <20220103183556.41040-7-hch@lst.de>
Date:   Mon,  3 Jan 2022 19:35:56 +0100
From:   Christoph Hellwig <hch@....de>
To:     Jonathan Corbet <corbet@....net>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>
Cc:     Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>,
        Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, linux-doc@...r.kernel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: [PATCH 6/6] bpf, docs: Fully document the JMP mode modifiers

Add a description for all the modifiers.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 Documentation/bpf/instruction-set.rst | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/Documentation/bpf/instruction-set.rst b/Documentation/bpf/instruction-set.rst
index 88e8d6a9195cd..3704836fe6df6 100644
--- a/Documentation/bpf/instruction-set.rst
+++ b/Documentation/bpf/instruction-set.rst
@@ -173,15 +173,15 @@ The size modifier is one of:
 
 The mode modifier is one of:
 
-  =============  =====  =====================
+  =============  =====  ====================================
   mode modifier  value  description
-  =============  =====  =====================
+  =============  =====  ====================================
   BPF_IMM        0x00   used for 64-bit mov
-  BPF_ABS        0x20
-  BPF_IND        0x40
-  BPF_MEM        0x60
+  BPF_ABS        0x20   legacy BPF packet access
+  BPF_IND        0x40   legacy BPF packet access
+  BPF_MEM        0x60   all normal load and store operations
   BPF_ATOMIC     0xc0   atomic operations
-  =============  =====  =====================
+  =============  =====  ====================================
 
 BPF_MEM | <size> | BPF_STX means::
 
-- 
2.30.2