genetlink: make info in GENL_REQ_ATTR_CHECK() const

Make the local variable in GENL_REQ_ATTR_CHECK() const.
genl_info_dump() returns a const pointer, so the macro
is currently hard to use in genl dumps.

Link: https://lore.kernel.org/r/20240222222819.156320-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index ecadba836ae56385bc24c05af1e4455171ecf9ad..9ece6e5a3ea8c325c6839db997112088540e570f 100644 (file)
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -153,7 +153,7 @@ static inline void *genl_info_userhdr(const struct genl_info *info)
 
 /* Report that a root attribute is missing */
 #define GENL_REQ_ATTR_CHECK(info, attr) ({                             \
-       struct genl_info *__info = (info);                              \
+       const struct genl_info *__info = (info);                        \
                                                                        \
        NL_REQ_ATTR_CHECK(__info->extack, NULL, __info->attrs, (attr)); \
 })