xdrgen: Pass the containing struct name to member codec emitters

A per-member code generation directive keyed on the (struct, member)
pair needs the name of the containing struct, but
emit_struct_member_encoder() and emit_struct_member_decoder()
receive only the member declaration.

Pass the containing struct's name to emit_struct_member_encoder() and
emit_struct_member_decoder(), and to the matching emitters in
pointer.py, as a required argument. A struct whose last field refers
to its own type is an _XdrPointer rather than an _XdrStruct, so
pointer.py takes the same argument. No emitter renders the new value
yet, so generated output is byte-identical. A subsequent patch keys
the "pragma pages" encoder on it.

Acked-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260908134234.512312-5-cel@kernel.org
Signed-off-by: Chuck Lever <cel@kernel.org>

2 files changed, 16 insertions, 8 deletions

diff --git a/tools/net/sunrpc/xdrgen/generators/pointer.py b/tools/net/sunrpc/xdrgen/generators/pointer.py
index 6dbda60ad2db..9a540e125786 100644
--- a/tools/net/sunrpc/xdrgen/generators/pointer.py
+++ b/tools/net/sunrpc/xdrgen/generators/pointer.py
@@ -91,7 +91,9 @@ def emit_pointer_definition(environment: Environment, node: _XdrPointer) -> None
 
 
 def emit_pointer_member_decoder(
-    environment: Environment, field: _XdrDeclaration
+    environment: Environment,
+    field: _XdrDeclaration,
+    struct_name: str,
 ) -> None:
     """Emit a decoder for one field in an XDR pointer"""
     if isinstance(field, _XdrBasic):
@@ -164,14 +166,16 @@ def emit_pointer_decoder(environment: Environment, node: _XdrPointer) -> None:
     print(template.render(name=node.name))
 
     for field in node.fields[0:-1]:
-        emit_pointer_member_decoder(environment, field)
+        emit_pointer_member_decoder(environment, field, node.name)
 
     template = get_jinja2_template(environment, "decoder", "close")
     print(template.render())
 
 
 def emit_pointer_member_encoder(
-    environment: Environment, field: _XdrDeclaration
+    environment: Environment,
+    field: _XdrDeclaration,
+    struct_name: str,
 ) -> None:
     """Emit an encoder for one field in a XDR pointer"""
     if isinstance(field, _XdrBasic):
@@ -241,7 +245,7 @@ def emit_pointer_encoder(environment: Environment, node: _XdrPointer) -> None:
     print(template.render(name=node.name))
 
     for field in node.fields[0:-1]:
-        emit_pointer_member_encoder(environment, field)
+        emit_pointer_member_encoder(environment, field, node.name)
 
     template = get_jinja2_template(environment, "encoder", "close")
     print(template.render())
diff --git a/tools/net/sunrpc/xdrgen/generators/struct.py b/tools/net/sunrpc/xdrgen/generators/struct.py
index 64911de46f62..91da3863c166 100644
--- a/tools/net/sunrpc/xdrgen/generators/struct.py
+++ b/tools/net/sunrpc/xdrgen/generators/struct.py
@@ -91,7 +91,9 @@ def emit_struct_definition(environment: Environment, node: _XdrStruct) -> None:
 
 
 def emit_struct_member_decoder(
-    environment: Environment, field: _XdrDeclaration
+    environment: Environment,
+    field: _XdrDeclaration,
+    struct_name: str,
 ) -> None:
     """Emit a decoder for one field in an XDR struct"""
     if isinstance(field, _XdrBasic):
@@ -164,14 +166,16 @@ def emit_struct_decoder(environment: Environment, node: _XdrStruct) -> None:
     print(template.render(name=node.name))
 
     for field in node.fields:
-        emit_struct_member_decoder(environment, field)
+        emit_struct_member_decoder(environment, field, node.name)
 
     template = get_jinja2_template(environment, "decoder", "close")
     print(template.render())
 
 
 def emit_struct_member_encoder(
-    environment: Environment, field: _XdrDeclaration
+    environment: Environment,
+    field: _XdrDeclaration,
+    struct_name: str,
 ) -> None:
     """Emit an encoder for one field in an XDR struct"""
     if isinstance(field, _XdrBasic):
@@ -241,7 +245,7 @@ def emit_struct_encoder(environment: Environment, node: _XdrStruct) -> None:
     print(template.render(name=node.name))
 
     for field in node.fields:
-        emit_struct_member_encoder(environment, field)
+        emit_struct_member_encoder(environment, field, node.name)
 
     template = get_jinja2_template(environment, "encoder", "close")
     print(template.render())