[dpdk-dev] [RFC] Yet another option for DPDK options

[Matthew Hall]

On Thu, Jun 02, 2016 at 04:08:37PM -0400, Neil Horman wrote:
> struct key_vals {
> 	char *key;
> 	union {
> 		ulong longval;
> 		void *ptrval;
> 	} value;
> };
> 
> struct config {
> 	size_t count;
> 	struct key_vals kvp[0];
> };

This sort of code is very 1970s / ioctl / messy binary. And doesn't buy any 
performance advantage because it's just for config.

Something that looks more like sysctl MIBs with hierarchical names or like 
JSON w/ a hierarchy of hash tables and arrays is much less user-hostile.

https://www.freebsd.org/cgi/man.cgi?sysctl(3)

http://json-c.github.io/json-c/json-c-0.12/doc/html/json__object_8h.html

Matthew.