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netlink: specs: support setting prefix-name per attribute

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Ethtool's PSE PoDL has a attr nest with different prefixes:

/* Power Sourcing Equipment */
enum {
	ETHTOOL_A_PSE_UNSPEC,
	ETHTOOL_A_PSE_HEADER,			/* nest - _A_HEADER_* */
	ETHTOOL_A_PODL_PSE_ADMIN_STATE,		/* u32 */
	ETHTOOL_A_PODL_PSE_ADMIN_CONTROL,	/* u32 */
	ETHTOOL_A_PODL_PSE_PW_D_STATUS,		/* u32 */

Header has a prefix of ETHTOOL_A_PSE_ and other attrs prefix of
ETHTOOL_A_PODL_PSE_ we can't cover them uniformly.
If PODL was after PSE life would be easy.

Now we either need to add prefixes to attr names which is yucky
or support setting prefix name per attr.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2023-06-09 14:43:37 -07:00 committed by David S. Miller
parent 33eedb0071
commit ed2042cc77
3 changed files with 13 additions and 2 deletions
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4
Documentation/netlink/genetlink-c.yaml
View file

@ -195,6 +195,10 @@ properties:
description: Max length for a string or a binary attribute.
$ref: '#/$defs/len-or-define'
sub-type: *attr-type
# Start genetlink-c
name-prefix:
type: string
# End genetlink-c
# Make sure name-prefix does not appear in subsets (subsets inherit naming)
dependencies:

4
Documentation/netlink/genetlink-legacy.yaml
View file

@ -226,6 +226,10 @@ properties:
description: Max length for a string or a binary attribute.
$ref: '#/$defs/len-or-define'
sub-type: *attr-type
# Start genetlink-c
name-prefix:
type: string
# End genetlink-c
# Start genetlink-legacy
struct:
description: Name of the struct type used for the attribute.

7
tools/net/ynl/ynl-gen-c.py
View file

@ -58,8 +58,11 @@ class Type(SpecAttr):
delattr(self, "enum_name")
def resolve(self):
self.enum_name = f"{self.attr_set.name_prefix}{self.name}"
self.enum_name = c_upper(self.enum_name)
if 'name-prefix' in self.attr:
enum_name = f"{self.attr['name-prefix']}{self.name}"
else:
enum_name = f"{self.attr_set.name_prefix}{self.name}"
self.enum_name = c_upper(enum_name)
def is_multi_val(self):
return None