netdev - [PATCH net-next 09/10] tools: ynl-gen: switch to family struct

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Date: Thu,  1 Jun 2023 19:35:47 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 09/10] tools: ynl-gen: switch to family struct

We'll want to store static info about the family soon.
Generate a struct. This changes creation from, e.g.:

	 ys = ynl_sock_create("netdev", &yerr);
to:
	 ys = ynl_sock_create(&ynl_netdev_family, &yerr);

on user's side.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 tools/net/ynl/ynl-gen-c.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py
index 4a7ca2823270..320e5e90920a 100755
--- a/tools/net/ynl/ynl-gen-c.py
+++ b/tools/net/ynl/ynl-gen-c.py
@@ -2109,6 +2109,16 @@ _C_KW = {
     cw.p(f'#endif /* {hdr_prot} */')
 
 
+def render_user_family(family, cw, prototype):
+    symbol = f'const struct ynl_family ynl_{family.c_name}_family'
+    if prototype:
+        cw.p(f'extern {symbol};')
+    else:
+        cw.block_start(f'{symbol} = ')
+        cw.p(f'.name = "{family.name}",')
+        cw.block_end(line=';')
+
+
 def find_kernel_root(full_path):
     sub_path = ''
     while True:
@@ -2204,6 +2214,8 @@ _C_KW = {
                 cw.p(f'#include "{one}"')
         else:
             cw.p('struct ynl_sock;')
+            cw.nl()
+            render_user_family(parsed, cw, True)
         cw.nl()
 
     if args.mode == "kernel":
@@ -2397,6 +2409,9 @@ _C_KW = {
                 cw.p('/* --------------- Common notification parsing --------------- */')
                 print_ntf_type_parse(parsed, cw, args.mode)
 
+            cw.nl()
+            render_user_family(parsed, cw, False)
+
     if args.header:
         cw.p(f'#endif /* {hdr_prot} */')
 
-- 
2.40.1