control plane. The API messages supports shared memory transport and
Unix domain sockets (SOCK_STREAM).
-The wire format is essentially that of a packed C struct.
+The wire format is essentially that of a network formatted (big-endian) packed C struct.
The VPP API compiler is located in *src/tools/vppapigen* and can currently
compile to JSON or C (used by the VPP binary itself).
{
u32 context;
i32 retval;
- string program [limit = 32];
- string version [limit = 32];
- string build_date [limit = 32];
- string build_directory [limit = 256];
+ string program [32];
+ string version [32];
+ string build_date [32];
+ /* The final field can be a variable length argument */
+ string build_directory [];
};
```
```
Where the above defines two new types *vl_api_ip4_address_t* and
-*vl_api_ip6_address_t*. These are aliases for the underlaying
+*vl_api_ip6_address_t*. These are aliases for the underlying
u8 array.
In the other form, it is used to specify an abstract data type.
### Scalar Value Types
.api type|size|C type|Python type
----------|----|------------------
+---------|----|------|-----------
i8 | 1|i8 |int
u8 | 1|u8 |int
i16 | 2|i16 |int
vl_api_prefix_t|21|vl_api_prefix_t|`<class 'ipaddress.IPv4Network'> or <class 'ipaddress.IPv6Network'>`
vl_api_ip4_prefix_t|5|vl_api_ip4_prefix_t|`<class 'ipaddress.IPv4Network'>`
vl_api_ip6_prefix_t|17|vl_api_ip6_prefix_t|`<class 'ipaddress.IPv6Network'>`
+vl_api_ip4_address_with_prefix_t|5|vl_api_ip4_address_with_prefix_t|`<class 'ipaddress.IPv4Interface'>`
+vl_api_ip6_address_with_prefix_t|17|vl_api_ip6_address_with_prefix_t|`<class 'ipaddress.IPv6Interface'>`
#### vnet/ethernet/ethernet_types.api
.api type|size|C type|Python type