Support uint / sint types in specs and YNL.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
name:
type: string
type: &attr-type
- enum: [ unused, pad, flag, binary, u8, u16, u32, u64, s32, s64,
+ enum: [ unused, pad, flag, binary,
+ uint, sint, u8, u16, u32, u64, s32, s64,
string, nest, array-nest, nest-type-value ]
doc:
description: Documentation of the attribute.
type: string
type: &attr-type
description: The netlink attribute type
- enum: [ unused, pad, flag, binary, u8, u16, u32, u64, s32, s64,
+ enum: [ unused, pad, flag, binary,
+ uint, sint, u8, u16, u32, u64, s32, s64,
string, nest, array-nest, nest-type-value ]
doc:
description: Documentation of the attribute.
name:
type: string
type: &attr-type
- enum: [ unused, pad, flag, binary, u8, u16, u32, u64, s32, s64,
+ enum: [ unused, pad, flag, binary,
+ uint, sint, u8, u16, u32, u64, s32, s64,
string, nest, array-nest, nest-type-value ]
doc:
description: Documentation of the attribute.
Represents a single attribute type within an attr space.
Attributes:
+ type string, attribute type
value numerical ID when serialized
attr_set Attribute Set containing this attr
is_multi bool, attr may repeat multiple times
len integer, optional byte length of binary types
display_hint string, hint to help choose format specifier
when displaying the value
+
+ is_auto_scalar bool, attr is a variable-size scalar
"""
def __init__(self, family, attr_set, yaml, value):
super().__init__(family, yaml)
+ self.type = yaml['type']
self.value = value
self.attr_set = attr_set
self.is_multi = yaml.get('multi-attr', False)
self.len = yaml.get('len')
self.display_hint = yaml.get('display-hint')
+ self.is_auto_scalar = self.type == "sint" or self.type == "uint"
+
class SpecAttrSet(SpecElement):
""" Netlink Attribute Set class.
yerr(yarg->ys, YNL_ERROR_ATTR_INVALID,
"Invalid attribute (u64 %s)", policy->name);
return -1;
+ case YNL_PT_UINT:
+ if (len == sizeof(__u32) || len == sizeof(__u64))
+ break;
+ yerr(yarg->ys, YNL_ERROR_ATTR_INVALID,
+ "Invalid attribute (uint %s)", policy->name);
+ return -1;
case YNL_PT_FLAG:
/* Let flags grow into real attrs, why not.. */
break;
YNL_PT_U16,
YNL_PT_U32,
YNL_PT_U64,
+ YNL_PT_UINT,
YNL_PT_NUL_STR,
};
void ynl_error_unknown_notification(struct ynl_sock *ys, __u8 cmd);
int ynl_error_parse(struct ynl_parse_arg *yarg, const char *msg);
+#ifndef MNL_HAS_AUTO_SCALARS
+static inline uint64_t mnl_attr_get_uint(const struct nlattr *attr)
+{
+ if (mnl_attr_get_len(attr) == 4)
+ return mnl_attr_get_u32(attr);
+ return mnl_attr_get_u64(attr);
+}
+
+static inline void
+mnl_attr_put_uint(struct nlmsghdr *nlh, uint16_t type, uint64_t data)
+{
+ if ((uint32_t)data == (uint64_t)data)
+ return mnl_attr_put_u32(nlh, type, data);
+ return mnl_attr_put_u64(nlh, type, data);
+}
+#endif
#endif
format = self.get_format(attr_type, byte_order)
return format.unpack(self.raw)[0]
+ def as_auto_scalar(self, attr_type, byte_order=None):
+ if len(self.raw) != 4 and len(self.raw) != 8:
+ raise Exception(f"Auto-scalar len payload be 4 or 8 bytes, got {len(self.raw)}")
+ real_type = attr_type[0] + str(len(self.raw) * 8)
+ format = self.get_format(real_type, byte_order)
+ return format.unpack(self.raw)[0]
+
def as_strz(self):
return self.raw.decode('ascii')[:-1]
attr_payload = bytes.fromhex(value)
else:
raise Exception(f'Unknown type for binary attribute, value: {value}')
+ elif attr.is_auto_scalar:
+ scalar = int(value)
+ real_type = attr["type"][0] + ('32' if scalar.bit_length() <= 32 else '64')
+ format = NlAttr.get_format(real_type, attr.byte_order)
+ attr_payload = format.pack(int(value))
elif attr['type'] in NlAttr.type_formats:
format = NlAttr.get_format(attr['type'], attr.byte_order)
attr_payload = format.pack(int(value))
decoded = self._decode_binary(attr, attr_spec)
elif attr_spec["type"] == 'flag':
decoded = True
+ elif attr_spec.is_auto_scalar:
+ decoded = attr.as_auto_scalar(attr_spec['type'], attr_spec.byte_order)
elif attr_spec["type"] in NlAttr.type_formats:
decoded = attr.as_scalar(attr_spec['type'], attr_spec.byte_order)
elif attr_spec["type"] == 'array-nest':
maybe_enum = not self.is_bitfield and 'enum' in self.attr
if maybe_enum and self.family.consts[self.attr['enum']].enum_name:
self.type_name = f"enum {self.family.name}_{c_lower(self.attr['enum'])}"
+ elif self.is_auto_scalar:
+ self.type_name = '__' + self.type[0] + '64'
else:
self.type_name = '__' + self.type
return super()._attr_policy(policy)
def _attr_typol(self):
- return f'.type = YNL_PT_U{self.type[1:]}, '
+ return f'.type = YNL_PT_U{c_upper(self.type[1:])}, '
def arg_member(self, ri):
return [f'{self.type_name} {self.c_name}{self.byte_order_comment}']
self.p(line)
-scalars = {'u8', 'u16', 'u32', 'u64', 's32', 's64'}
+scalars = {'u8', 'u16', 'u32', 'u64', 's32', 's64', 'uint', 'sint'}
direction_to_suffix = {
'reply': '_rsp',