Being able to check attribute presence and set extack
if not on one line is handy, add helpers.
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
} \
} while (0)
+#define NL_REQ_ATTR_CHECK(extack, nest, tb, type) ({ \
+ struct nlattr **__tb = (tb); \
+ u32 __attr = (type); \
+ int __retval; \
+ \
+ __retval = !__tb[__attr]; \
+ if (__retval) \
+ NL_SET_ERR_ATTR_MISS((extack), (nest), __attr); \
+ __retval; \
+})
+
static inline void nl_set_extack_cookie_u64(struct netlink_ext_ack *extack,
u64 cookie)
{
#define GENL_SET_ERR_MSG(info, msg) NL_SET_ERR_MSG((info)->extack, msg)
+/* Report that a root attribute is missing */
+#define GENL_REQ_ATTR_CHECK(info, attr) ({ \
+ struct genl_info *__info = (info); \
+ \
+ NL_REQ_ATTR_CHECK(__info->extack, NULL, __info->attrs, (attr)); \
+})
+
enum genl_validate_flags {
GENL_DONT_VALIDATE_STRICT = BIT(0),
GENL_DONT_VALIDATE_DUMP = BIT(1),