[ofa-general] RFC: SRC API

[Michael S. Tsirkin]

Some code examples:
	/* create a domain and share it: */

	struct ibv_src_domain * d = ibv_get_new_src_domain(ctx);
	int fd = open(path, O_CREAT | O_RDWR, mode);
	ibv_share_src_domain(d, fd);

	/* get a reference to a shared domain: */

	int fd = open(path, O_CREAT | O_RDWR, mode);
	struct ibv_src_domain * d = ibv_get_shared_src_domain(ctx, fd);

	/* once done: */
	ibv_put_src_domain(d);

Note: when all users do put, domain is destroyed.

-- 
MST