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Message-ID: <20240326063728.2369353-2-liuhangbin@gmail.com>
Date: Tue, 26 Mar 2024 14:37:27 +0800
From: Hangbin Liu <liuhangbin@...il.com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Donald Hunter <donald.hunter@...il.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Jacob Keller <jacob.e.keller@...el.com>,
	Stanislav Fomichev <sdf@...gle.com>,
	Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCH net-next 1/2] ynl: rename array-nest to indexed-array

Some implementations, like bonding, has nest array with same attr type.
To support all kinds of entries under one nest array. As disscussed[1],
let's rename array-nest to indexed-array, and assuming the value is
a nest by passing the type via sub-type.

[1] https://lore.kernel.org/netdev/20240312100105.16a59086@kernel.org/

Suggested-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 Documentation/netlink/genetlink-c.yaml      |  2 +-
 Documentation/netlink/genetlink-legacy.yaml |  2 +-
 Documentation/netlink/genetlink.yaml        |  2 +-
 Documentation/netlink/netlink-raw.yaml      |  2 +-
 Documentation/netlink/specs/nlctrl.yaml     |  6 ++++--
 Documentation/netlink/specs/rt_link.yaml    |  3 ++-
 Documentation/netlink/specs/tc.yaml         | 21 ++++++++++++++-------
 tools/net/ynl/lib/ynl.py                    |  5 +++--
 tools/net/ynl/ynl-gen-c.py                  | 17 ++++++++++-------
 9 files changed, 37 insertions(+), 23 deletions(-)

diff --git a/Documentation/netlink/genetlink-c.yaml b/Documentation/netlink/genetlink-c.yaml
index 4dfd899a1661..4f803eaac6d8 100644
--- a/Documentation/netlink/genetlink-c.yaml
+++ b/Documentation/netlink/genetlink-c.yaml
@@ -158,7 +158,7 @@ properties:
               type: &attr-type
                 enum: [ unused, pad, flag, binary,
                         uint, sint, u8, u16, u32, u64, s32, s64,
-                        string, nest, array-nest, nest-type-value ]
+                        string, nest, indexed-array, nest-type-value ]
               doc:
                 description: Documentation of the attribute.
                 type: string
diff --git a/Documentation/netlink/genetlink-legacy.yaml b/Documentation/netlink/genetlink-legacy.yaml
index b48ad3b1cc32..8db0e22fa72c 100644
--- a/Documentation/netlink/genetlink-legacy.yaml
+++ b/Documentation/netlink/genetlink-legacy.yaml
@@ -201,7 +201,7 @@ properties:
                 description: The netlink attribute type
                 enum: [ unused, pad, flag, binary, bitfield32,
                         uint, sint, u8, u16, u32, u64, s32, s64,
-                        string, nest, array-nest, nest-type-value ]
+                        string, nest, indexed-array, nest-type-value ]
               doc:
                 description: Documentation of the attribute.
                 type: string
diff --git a/Documentation/netlink/genetlink.yaml b/Documentation/netlink/genetlink.yaml
index ebd6ee743fcc..b036227b46f1 100644
--- a/Documentation/netlink/genetlink.yaml
+++ b/Documentation/netlink/genetlink.yaml
@@ -124,7 +124,7 @@ properties:
               type: &attr-type
                 enum: [ unused, pad, flag, binary,
                         uint, sint, u8, u16, u32, u64, s32, s64,
-                        string, nest, array-nest, nest-type-value ]
+                        string, nest, indexed-array, nest-type-value ]
               doc:
                 description: Documentation of the attribute.
                 type: string
diff --git a/Documentation/netlink/netlink-raw.yaml b/Documentation/netlink/netlink-raw.yaml
index a76e54cbadbc..914aa1c0a273 100644
--- a/Documentation/netlink/netlink-raw.yaml
+++ b/Documentation/netlink/netlink-raw.yaml
@@ -222,7 +222,7 @@ properties:
                 description: The netlink attribute type
                 enum: [ unused, pad, flag, binary, bitfield32,
                         u8, u16, u32, u64, s8, s16, s32, s64,
-                        string, nest, array-nest, nest-type-value,
+                        string, nest, indexed-array, nest-type-value,
                         sub-message ]
               doc:
                 description: Documentation of the attribute.
diff --git a/Documentation/netlink/specs/nlctrl.yaml b/Documentation/netlink/specs/nlctrl.yaml
index b1632b95f725..a36535350bdb 100644
--- a/Documentation/netlink/specs/nlctrl.yaml
+++ b/Documentation/netlink/specs/nlctrl.yaml
@@ -65,11 +65,13 @@ attribute-sets:
         type: u32
       -
         name: ops
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: op-attrs
       -
         name: mcast-groups
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: mcast-group-attrs
       -
         name: policy
diff --git a/Documentation/netlink/specs/rt_link.yaml b/Documentation/netlink/specs/rt_link.yaml
index 8e4d19adee8c..08bec2537a63 100644
--- a/Documentation/netlink/specs/rt_link.yaml
+++ b/Documentation/netlink/specs/rt_link.yaml
@@ -1617,7 +1617,8 @@ attribute-sets:
         type: binary
       -
         name: hw-s-info
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: hw-s-info-one
       -
         name: l3-stats
diff --git a/Documentation/netlink/specs/tc.yaml b/Documentation/netlink/specs/tc.yaml
index 324fa182cd14..dbcf19e494ec 100644
--- a/Documentation/netlink/specs/tc.yaml
+++ b/Documentation/netlink/specs/tc.yaml
@@ -1937,7 +1937,8 @@ attribute-sets:
         nested-attributes: tc-ematch-attrs
       -
         name: act
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: tc-act-attrs
       -
         name: police
@@ -2077,7 +2078,8 @@ attribute-sets:
         type: u32
       -
         name: tin-stats
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: tc-cake-tin-stats-attrs
       -
         name: deficit
@@ -2297,7 +2299,8 @@ attribute-sets:
         type: string
       -
         name: act
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: tc-act-attrs
       -
         name: key-eth-dst
@@ -2798,7 +2801,8 @@ attribute-sets:
         type: string
       -
         name: act
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: tc-act-attrs
       -
         name: mask
@@ -2951,7 +2955,8 @@ attribute-sets:
         type: u32
       -
         name: act
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: tc-act-attrs
       -
         name: flags
@@ -3324,7 +3329,8 @@ attribute-sets:
         nested-attributes: tc-police-attrs
       -
         name: act
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: tc-act-attrs
   -
     name: tc-taprio-attrs
@@ -3542,7 +3548,8 @@ attribute-sets:
         nested-attributes: tc-police-attrs
       -
         name: act
-        type: array-nest
+        type: indexed-array
+        sub-type: nest
         nested-attributes: tc-act-attrs
       -
         name: indev
diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
index 5fa7957f6e0f..7239e673a28a 100644
--- a/tools/net/ynl/lib/ynl.py
+++ b/tools/net/ynl/lib/ynl.py
@@ -686,8 +686,9 @@ class YnlFamily(SpecFamily):
                 decoded = attr.as_scalar(attr_spec['type'], attr_spec.byte_order)
                 if 'enum' in attr_spec:
                     decoded = self._decode_enum(decoded, attr_spec)
-            elif attr_spec["type"] == 'array-nest':
-                decoded = self._decode_array_nest(attr, attr_spec)
+            elif attr_spec["type"] == 'indexed-array' and 'sub-type' in attr_spec:
+                if attr_spec["sub-type"] == 'nest':
+                    decoded = self._decode_array_nest(attr, attr_spec)
             elif attr_spec["type"] == 'bitfield32':
                 value, selector = struct.unpack("II", attr.raw)
                 if 'enum' in attr_spec:
diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py
index 6b7eb2d2aaf1..8d5ec5449648 100755
--- a/tools/net/ynl/ynl-gen-c.py
+++ b/tools/net/ynl/ynl-gen-c.py
@@ -838,8 +838,9 @@ class AttrSet(SpecAttrSet):
             t = TypeBitfield32(self.family, self, elem, value)
         elif elem['type'] == 'nest':
             t = TypeNest(self.family, self, elem, value)
-        elif elem['type'] == 'array-nest':
-            t = TypeArrayNest(self.family, self, elem, value)
+        elif elem['type'] == 'indexed-array' and 'sub-type' in elem:
+            if elem["sub-type"] == 'nest':
+                t = TypeArrayNest(self.family, self, elem, value)
         elif elem['type'] == 'nest-type-value':
             t = TypeNestTypeValue(self.family, self, elem, value)
         else:
@@ -1052,8 +1053,9 @@ class Family(SpecFamily):
                     if nested in self.root_sets:
                         raise Exception("Inheriting members to a space used as root not supported")
                     inherit.update(set(spec['type-value']))
-                elif spec['type'] == 'array-nest':
-                    inherit.add('idx')
+                elif spec['type'] == 'indexed-array' and 'sub-type' in spec:
+                    if spec["sub-type"] == 'nest':
+                        inherit.add('idx')
                 self.pure_nested_structs[nested].set_inherited(inherit)
 
         for root_set, rs_members in self.root_sets.items():
@@ -1616,9 +1618,10 @@ def _multi_parse(ri, struct, init_lines, local_vars):
     multi_attrs = set()
     needs_parg = False
     for arg, aspec in struct.member_list():
-        if aspec['type'] == 'array-nest':
-            local_vars.append(f'const struct nlattr *attr_{aspec.c_name};')
-            array_nests.add(arg)
+        if aspec['type'] == 'indexed-array' and 'sub-type' in aspec:
+            if aspec["sub-type"] == 'nest':
+                local_vars.append(f'const struct nlattr *attr_{aspec.c_name};')
+                array_nests.add(arg)
         if 'multi-attr' in aspec:
             multi_attrs.add(arg)
         needs_parg |= 'nested-attributes' in aspec
-- 
2.43.0


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