Store protocol config size inside protocol structure

CF_ADDTO(proto, dev_proto '}')

dev_proto_start: proto_start DIRECT {

     this_proto = proto_config_new(&proto_device, sizeof(struct rt_dev_config), $1);

     this_proto = proto_config_new(&proto_device, $1);

     init_list(&DIRECT_CFG->iface_list);

   }

 ;

/**

 * proto_config_new - create a new protocol configuration

 * @pr: protocol the configuration will belong to

 * @size: size of the structure including generic data

 * @class: SYM_PROTO or SYM_TEMPLATE

 *

 * Whenever the configuration file says that a new instance

 * initialized during protos_commit()).

 */

void *

proto_config_new(struct protocol *pr, unsigned size, int class)

proto_config_new(struct protocol *pr, int class)

{

  struct proto_config *c = cfg_allocz(size);

  struct proto_config *c = cfg_allocz(pr->config_size);

  if (class == SYM_PROTO)

    add_tail(&new_config->protos, &c->n);

  int name_counter;			/* Counter for automatic name generation */

  int attr_class;			/* Attribute class known to this protocol */

  int multitable;			/* Protocol handles all announce hooks itself */

  unsigned preference;			/* Default protocol preference */

  uint preference;			/* Default protocol preference */

  uint config_size;			/* Size of protocol config */

  void (*preconfig)(struct protocol *, struct config *);	/* Just before configuring */

  void (*postconfig)(struct proto_config *);			/* After configuring each instance */

void *proto_new(struct proto_config *, unsigned size);

void *proto_config_new(struct protocol *, unsigned size, int class);

void *proto_config_new(struct protocol *, int class);

void proto_copy_config(struct proto_config *dest, struct proto_config *src);

void proto_request_feeding(struct proto *p);

  .name = 		"Direct",

  .template = 		"direct%d",

  .preference = 	DEF_PREF_DIRECT,

  .config_size =	sizeof(struct rt_dev_config),

  .init = 		dev_init,

  .reconfigure = 	dev_reconfigure,

  .copy_config = 	dev_copy_config

struct protocol proto_bfd = {

  .name =		"BFD",

  .template =		"bfd%d",

  .config_size =	sizeof(struct bfd_config),

  .init =		bfd_init,

  .start =		bfd_start,

  .shutdown =		bfd_shutdown,