Cleanup in sysdep KRT code, part 1.

OS-dependent functions renamed to be more consistent,
prepared to merge krt-set and krt-scan headers.

Name changes:

struct krt_if_params -> struct kif_params
struct krt_if_status -> struct kif_status
struct krt_set/scan_params -> struct krt_params
struct krt_set/scan_status -> struct krt_status

krt_if_params_same -> kif_sys_reconfigure
krt_if_copy_params -> kif_sys_copy_config
krt_set/scan_params_same -> krt_sys_reconfigure
krt_set/scan_copy_params -> krt_sys_copy_config

krt_if_scan -> kif_do_scan
krt_set_notify -> krt_do_notify
krt_scan_fire -> krt_do_scan

krt_if_ -> kif_sys_
krt_scan_ -> krt_sys_
krt_set_ -> krt_sys_

15 files changed, 360 insertions, 357 deletions

diff --git a/sysdep/bsd/krt-iface.h b/sysdep/bsd/krt-iface.h
index 7f0d52bd..278c4be9 100644
--- a/sysdep/bsd/krt-iface.h
+++ b/sysdep/bsd/krt-iface.h
@@ -13,13 +13,21 @@
  *  We don't have split iface/scan/set parts. See krt-sock.h.
  */
 
-struct krt_if_params {
+struct kif_params {
 };
 
-struct krt_if_status {
+struct kif_status {
 };
 
-static inline int kif_params_same(struct krt_if_params *old UNUSED, struct krt_if_params *new UNUSED) { return 1; }
-static inline void kif_copy_params(struct krt_if_params *dest UNUSED, struct krt_if_params *src UNUSED) { }
+
+static inline void kif_sys_init(struct kif_proto *p UNUSED) { }
+static inline int kif_sys_reconfigure(struct kif_proto *p UNUSED, struct kif_config *n UNUSED, struct kif_config *o UNUSED) { return 1; }
+
+static inline void kif_sys_preconfig(struct config *c UNUSED) { }
+static inline void kif_sys_postconfig(struct kif_config *c UNUSED) { }
+static inline void kif_sys_init_config(struct kif_config *c UNUSED) { }
+static inline void kif_sys_copy_config(struct kif_config *d UNUSED, struct kif_config *s UNUSED) { }
+
+static inline void kif_sys_io_init(void) { }
 
 #endif
diff --git a/sysdep/bsd/krt-scan.h b/sysdep/bsd/krt-scan.h
index 19cd930d..045b9e77 100644
--- a/sysdep/bsd/krt-scan.h
+++ b/sysdep/bsd/krt-scan.h
@@ -13,10 +13,18 @@ struct krt_scan_params {
 };
 
 struct krt_scan_status {
-  list temp_ifs;			/* Temporary interfaces */
 };
 
-static inline int krt_scan_params_same(struct krt_scan_params *o UNUSED, struct krt_scan_params *n UNUSED) { return 1; }
-static inline void krt_scan_copy_params(struct krt_scan_params *d UNUSED, struct krt_scan_params *s UNUSED) { }
+
+static inline void krt_sys_init(struct krt_proto *p UNUSED) { }
+static inline int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n UNUSED, struct krt_config *o UNUSED) { return 1; }
+
+static inline void krt_sys_preconfig(struct config *c UNUSED) { }
+static inline void krt_sys_postconfig(struct krt_config *c UNUSED) { }
+static inline void krt_sys_init_config(struct krt_config *c UNUSED) { }
+static inline void krt_sys_copy_config(struct krt_config *d UNUSED, struct krt_config *s UNUSED) { }
+
+
+
 
 #endif
diff --git a/sysdep/bsd/krt-sock.c b/sysdep/bsd/krt-sock.c
index 9ca36d83..5fb5f9f7 100644
--- a/sysdep/bsd/krt-sock.c
+++ b/sysdep/bsd/krt-sock.c
@@ -33,7 +33,19 @@
 #include "lib/string.h"
 #include "lib/socket.h"
 
-int rt_sock = 0;
+
+#ifndef RTAX_MAX
+#define RTAX_MAX        8
+#endif
+
+struct ks_msg
+{
+  struct rt_msghdr rtm;
+  struct sockaddr_storage buf[RTAX_MAX];
+};
+
+
+static int rt_sock = 0;
 
 int
 krt_capable(rte *e)
@@ -189,8 +201,8 @@ krt_sock_send(int cmd, rte *e)
 }
 
 void
-krt_set_notify(struct krt_proto *p UNUSED, net *n, rte *new, rte *old,
-	       struct ea_list *eattrs UNUSED)
+krt_do_notify(struct krt_proto *p UNUSED, net *n, rte *new, rte *old,
+	      struct ea_list *eattrs UNUSED)
 {
   int err = 0;
 
@@ -206,45 +218,6 @@ krt_set_notify(struct krt_proto *p UNUSED, net *n, rte *new, rte *old,
     n->n.flags &= ~KRF_SYNC_ERROR;
 }
 
-static int
-krt_set_hook(sock *sk, int size UNUSED)
-{
-  struct ks_msg msg;
-  int l = read(sk->fd, (char *)&msg, sizeof(msg));
-
-  if(l <= 0)
-    log(L_ERR "krt-sock: read failed");
-  else
-  krt_read_msg((struct proto *)sk->data, &msg, 0);
-
-  return 0;
-}
-
-void
-krt_set_start(struct krt_proto *x, int first UNUSED)
-{
-  sock *sk_rt;
-  static int ks_open_tried = 0;
-
-  if (ks_open_tried)
-    return;
-
-  ks_open_tried = 1;
-
-  DBG("KRT: Opening kernel socket\n");
-
-  if( (rt_sock = socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC)) < 0)
-    die("Cannot open kernel socket for routes");
-
-  sk_rt = sk_new(krt_pool);
-  sk_rt->type = SK_MAGIC;
-  sk_rt->rx_hook = krt_set_hook;
-  sk_rt->fd = rt_sock;
-  sk_rt->data = x;
-  if (sk_open(sk_rt))
-    bug("krt-sock: sk_open failed");
-}
-
 #define SKIP(ARG...) do { DBG("KRT: Ignoring route - " ARG); return; } while(0)
 
 static void
@@ -648,32 +621,6 @@ krt_read_msg(struct proto *p, struct ks_msg *msg, int scan)
   }
 }
 
-void
-krt_scan_construct(struct krt_config *c UNUSED)
-{
-}
-
-void
-krt_scan_preconfig(struct config *c UNUSED)
-{
-}
-
-void
-krt_scan_postconfig(struct krt_config *c UNUSED)
-{
-}
-
-void
-krt_scan_start(struct krt_proto *x, int first UNUSED)
-{
-  init_list(&x->scan.temp_ifs);
-}
-
-void
-krt_scan_shutdown(struct krt_proto *x UNUSED, int last UNUSED)
-{
-}
-
 static void
 krt_sysctl_scan(struct proto *p, pool *pool, byte **buf, size_t *bl, int cmd)
 {
@@ -732,13 +679,13 @@ static size_t krt_buflen = 32768;
 static size_t kif_buflen = 4096;
 
 void
-krt_scan_fire(struct krt_proto *p)
+krt_do_scan(struct krt_proto *p)
 {
   krt_sysctl_scan((struct proto *)p, p->krt_pool, &krt_buffer, &krt_buflen, NET_RT_DUMP);
 }
 
 void
-krt_if_scan(struct kif_proto *p)
+kif_do_scan(struct kif_proto *p)
 {
   struct proto *P = (struct proto *)p;
   if_start_update();
@@ -746,14 +693,47 @@ krt_if_scan(struct kif_proto *p)
   if_end_update();
 }
 
+static int
+krt_sock_hook(sock *sk, int size UNUSED)
+{
+  struct ks_msg msg;
+  int l = read(sk->fd, (char *)&msg, sizeof(msg));
+
+  if(l <= 0)
+    log(L_ERR "krt-sock: read failed");
+  else
+  krt_read_msg((struct proto *)sk->data, &msg, 0);
+
+  return 0;
+}
 
 void
-krt_set_construct(struct krt_config *c UNUSED)
+krt_sys_start(struct krt_proto *x, int first UNUSED)
 {
+  sock *sk_rt;
+  static int ks_open_tried = 0;
+
+  if (ks_open_tried)
+    return;
+
+  ks_open_tried = 1;
+
+  DBG("KRT: Opening kernel socket\n");
+
+  if( (rt_sock = socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC)) < 0)
+    die("Cannot open kernel socket for routes");
+
+  sk_rt = sk_new(krt_pool);
+  sk_rt->type = SK_MAGIC;
+  sk_rt->rx_hook = krt_sock_hook;
+  sk_rt->fd = rt_sock;
+  sk_rt->data = x;
+  if (sk_open(sk_rt))
+    bug("krt-sock: sk_open failed");
 }
 
 void
-krt_set_shutdown(struct krt_proto *x UNUSED, int last UNUSED)
+krt_sys_shutdown(struct krt_proto *x UNUSED, int last UNUSED)
 {
   if (!krt_buffer)
     return;
@@ -762,23 +742,14 @@ krt_set_shutdown(struct krt_proto *x UNUSED, int last UNUSED)
   krt_buffer = NULL;
 }
 
-void
-krt_if_io_init(void)
-{
-}
-
-void
-krt_if_construct(struct kif_config *c UNUSED)
-{
-}
 
 void
-krt_if_start(struct kif_proto *p UNUSED)
+kif_sys_start(struct kif_proto *p UNUSED)
 {
 }
 
 void
-krt_if_shutdown(struct kif_proto *p UNUSED)
+kif_sys_shutdown(struct kif_proto *p UNUSED)
 {
   if (!kif_buffer)
     return;
diff --git a/sysdep/bsd/krt-sock.h b/sysdep/bsd/krt-sock.h
index aab639c4..d9a7ca5d 100644
--- a/sysdep/bsd/krt-sock.h
+++ b/sysdep/bsd/krt-sock.h
@@ -9,29 +9,10 @@
 #ifndef _BIRD_KRT_SOCK_H_
 #define _BIRD_KRT_SOCK_H_
 
-#include <sys/socket.h>
-#include <net/route.h>
-#include "lib/socket.h"
-
-#ifndef RTAX_MAX
-#define RTAX_MAX        8
-#endif
-
-
-struct ks_msg
-{
-  struct rt_msghdr rtm;
-  struct sockaddr_storage buf[RTAX_MAX];
-};
-
-
-
-extern int krt_set_sock;
-
-struct krt_set_params {
+struct krt_params {
 };
 
-struct krt_set_status {
+struct krt_status {
 };
 
 static inline int krt_set_params_same(struct krt_set_params *o UNUSED, struct krt_set_params *n UNUSED) { return 1; }
diff --git a/sysdep/linux/netlink/krt-iface.h b/sysdep/linux/netlink/krt-iface.h
index 770c6e2e..8cfe1073 100644
--- a/sysdep/linux/netlink/krt-iface.h
+++ b/sysdep/linux/netlink/krt-iface.h
@@ -13,17 +13,21 @@
  *  We don't have split iface/scan/set parts. See krt-scan.h.
  */
 
-struct krt_if_params {
+struct kif_params {
 };
 
-struct krt_if_status {
+struct kif_status {
 };
 
-static inline void krt_if_construct(struct kif_config *c UNUSED) { };
-static inline void krt_if_shutdown(struct kif_proto *p UNUSED) { };
-static inline void krt_if_io_init(void) { };
 
-static inline int kif_params_same(struct krt_if_params *old UNUSED, struct krt_if_params *new UNUSED) { return 1; }
-static inline void kif_copy_params(struct krt_if_params *dest UNUSED, struct krt_if_params *src UNUSED) { }
+static inline void kif_sys_init(struct kif_proto *p UNUSED) { }
+static inline int kif_sys_reconfigure(struct kif_proto *p UNUSED, struct kif_config *n UNUSED, struct kif_config *o UNUSED) { return 1; }
+
+static inline void kif_sys_preconfig(struct config *c UNUSED) { }
+static inline void kif_sys_postconfig(struct kif_config *c UNUSED) { }
+static inline void kif_sys_init_config(struct kif_config *c UNUSED) { }
+static inline void kif_sys_copy_config(struct kif_config *d UNUSED, struct kif_config *s UNUSED) { }
+
+static inline void kif_sys_io_init(void) { }
 
 #endif
diff --git a/sysdep/linux/netlink/krt-scan.h b/sysdep/linux/netlink/krt-scan.h
index 9b5e075b..302b6093 100644
--- a/sysdep/linux/netlink/krt-scan.h
+++ b/sysdep/linux/netlink/krt-scan.h
@@ -17,20 +17,14 @@
 
 #define NL_NUM_TABLES 256
 
-struct krt_scan_params {
+struct krt_params {
   int table_id;				/* Kernel table ID we sync with */
 };
 
-struct krt_scan_status {
-  list temp_ifs;			/* Temporary interfaces */
+struct krt_status {
 };
 
-static inline int krt_scan_params_same(struct krt_scan_params *o, struct krt_scan_params *n)
-{
-  return o->table_id == n->table_id;
-}
 
-static inline void krt_scan_copy_params(struct krt_scan_params *d UNUSED, struct krt_scan_params *s UNUSED) { }
-/* table_id copied in krt_copy_config() */
+static inline void krt_sys_init(struct krt_proto *p UNUSED) { }
 
 #endif
diff --git a/sysdep/linux/netlink/netlink.Y b/sysdep/linux/netlink/netlink.Y
index b00b0eee..51689ff9 100644
--- a/sysdep/linux/netlink/netlink.Y
+++ b/sysdep/linux/netlink/netlink.Y
@@ -20,7 +20,7 @@ nl_item:
    KERNEL TABLE expr {
 	if ($3 <= 0 || $3 >= NL_NUM_TABLES)
 	  cf_error("Kernel routing table number out of range");
-	THIS_KRT->scan.table_id = $3;
+	THIS_KRT->sys.table_id = $3;
    }
  ;
 
diff --git a/sysdep/linux/netlink/netlink.c b/sysdep/linux/netlink/netlink.c
index 182088a1..e3faf043 100644
--- a/sysdep/linux/netlink/netlink.c
+++ b/sysdep/linux/netlink/netlink.c
@@ -548,7 +548,7 @@ nl_parse_addr(struct nlmsghdr *h)
 }
 
 void
-krt_if_scan(struct kif_proto *p UNUSED)
+kif_do_scan(struct kif_proto *p UNUSED)
 {
   struct nlmsghdr *h;
 
@@ -634,7 +634,7 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new)
   r.r.rtm_family = BIRD_AF;
   r.r.rtm_dst_len = net->n.pxlen;
   r.r.rtm_tos = 0;
-  r.r.rtm_table = KRT_CF->scan.table_id;
+  r.r.rtm_table = KRT_CF->sys.table_id;
   r.r.rtm_protocol = RTPROT_BIRD;
   r.r.rtm_scope = RT_SCOPE_UNIVERSE;
   nl_add_attr_ipa(&r.h, sizeof(r), RTA_DST, net->n.prefix);
@@ -687,7 +687,7 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new)
 }
 
 void
-krt_set_notify(struct krt_proto *p, net *n, rte *new, rte *old, struct ea_list *eattrs)
+krt_do_notify(struct krt_proto *p, net *n, rte *new, rte *old, struct ea_list *eattrs)
 {
   int err = 0;
 
@@ -940,7 +940,7 @@ nl_parse_route(struct nlmsghdr *h, int scan)
 }
 
 void
-krt_scan_fire(struct krt_proto *p UNUSED)	/* CONFIG_ALL_TABLES_AT_ONCE => p is NULL */
+krt_do_scan(struct krt_proto *p UNUSED)	/* CONFIG_ALL_TABLES_AT_ONCE => p is NULL */
 {
   struct nlmsghdr *h;
 
@@ -1084,15 +1084,38 @@ nl_open_async(void)
 static u8 nl_cf_table[(NL_NUM_TABLES+7) / 8];
 
 void
-krt_scan_preconfig(struct config *c UNUSED)
+krt_sys_start(struct krt_proto *p, int first)
+{
+  nl_table_map[KRT_CF->sys.table_id] = p;
+  if (first)
+    {
+      nl_open();
+      nl_open_async();
+    }
+}
+
+void
+krt_sys_shutdown(struct krt_proto *p UNUSED, int last UNUSED)
+{
+}
+
+int
+krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o)
+{
+  return n->sys.table_id == o->sys.table_id;
+}
+
+
+void
+krt_sys_preconfig(struct config *c UNUSED)
 {
   bzero(&nl_cf_table, sizeof(nl_cf_table));
 }
 
 void
-krt_scan_postconfig(struct krt_config *x)
+krt_sys_postconfig(struct krt_config *x)
 {
-  int id = x->scan.table_id;
+  int id = x->sys.table_id;
 
   if (nl_cf_table[id/8] & (1 << (id%8)))
     cf_error("Multiple kernel syncers defined for table #%d", id);
@@ -1100,35 +1123,27 @@ krt_scan_postconfig(struct krt_config *x)
 }
 
 void
-krt_scan_construct(struct krt_config *x)
+krt_sys_init_config(struct krt_config *cf)
 {
-#ifndef IPV6
-  x->scan.table_id = RT_TABLE_MAIN;
-#else
-  x->scan.table_id = 254;
-#endif
+  cf->sys.table_id = RT_TABLE_MAIN;
 }
 
 void
-krt_scan_start(struct krt_proto *p, int first)
+krt_sys_copy_config(struct krt_config *d, struct krt_config *s)
 {
-  init_list(&p->scan.temp_ifs);
-  nl_table_map[KRT_CF->scan.table_id] = p;
-  if (first)
-    {
-      nl_open();
-      nl_open_async();
-    }
+  d->sys.table_id = s->sys.table_id;
 }
 
+
+
 void
-krt_scan_shutdown(struct krt_proto *p UNUSED, int last UNUSED)
+kif_sys_start(struct kif_proto *p UNUSED)
 {
+  nl_open();
+  nl_open_async();
 }
 
 void
-krt_if_start(struct kif_proto *p UNUSED)
+kif_sys_shutdown(struct kif_proto *p UNUSED)
 {
-  nl_open();
-  nl_open_async();
 }
diff --git a/sysdep/unix/krt-iface.c b/sysdep/unix/krt-iface.c
index 69048ae8..88c17ecd 100644
--- a/sysdep/unix/krt-iface.c
+++ b/sysdep/unix/krt-iface.c
@@ -186,7 +186,7 @@ scan_ifs(struct ifreq *r, int cnt)
 }
 
 void
-krt_if_scan(struct kif_proto *p)
+kif_do_scan(struct kif_proto *p)
 {
   struct ifconf ic;
   static int last_ifbuf_size = 4*sizeof(struct ifreq);
@@ -208,22 +208,17 @@ krt_if_scan(struct kif_proto *p)
 }
 
 void
-krt_if_construct(struct kif_config *c)
+kif_start(struct kif_proto *p)
 {
 }
 
 void
-krt_if_start(struct kif_proto *p)
+kif_shutdown(struct kif_proto *p)
 {
 }
 
 void
-krt_if_shutdown(struct kif_proto *p)
-{
-}
-
-void
-krt_if_io_init(void)
+kif_io_init(void)
 {
   if_scan_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
   DBG("Using socket %d for interface and route scanning\n", if_scan_sock);
diff --git a/sysdep/unix/krt-iface.h b/sysdep/unix/krt-iface.h
index 9e12bcc3..e9e8e507 100644
--- a/sysdep/unix/krt-iface.h
+++ b/sysdep/unix/krt-iface.h
@@ -9,15 +9,21 @@
 #ifndef _BIRD_KRT_IFACE_H_
 #define _BIRD_KRT_IFACE_H_
 
-struct krt_if_params {
+struct kif_params {
 };
 
-struct krt_if_status {
+struct kif_status {
 };
 
 extern int if_scan_sock;
 
-static inline int kif_params_same(struct krt_if_params *old UNUSED, struct krt_if_params *new UNUSED) { return 1; }
-static inline void kif_copy_params(struct krt_if_params *dest UNUSED, struct krt_if_params *src UNUSED) { }
+
+static inline void kif_sys_init(struct kif_proto *p UNUSED) { }
+static inline int kif_sys_reconfigure(struct kif_proto *p UNUSED, struct kif_config *n UNUSED, struct kif_config *o UNUSED) { return 1; }
+
+static inline void kif_sys_preconfig(struct config *c UNUSED) { }
+static inline void kif_sys_postconfig(struct kif_config *c UNUSED) { }
+static inline void kif_sys_init_config(struct kif_config *c UNUSED) { }
+static inline void kif_sys_copy_config(struct kif_config *d UNUSED, struct kif_config *s UNUSED) { }
 
 #endif
diff --git a/sysdep/unix/krt-set.c b/sysdep/unix/krt-set.c
index 23cbe5c5..252c5d3e 100644
--- a/sysdep/unix/krt-set.c
+++ b/sysdep/unix/krt-set.c
@@ -79,7 +79,7 @@ krt_ioctl(int ioc, rte *e, char *name)
 }
 
 void
-krt_set_notify(struct krt_proto *p, net *net, rte *new, rte *old)
+krt_do_notify(struct krt_proto *p, net *net, rte *new, rte *old)
 {
   if (old)
     {
@@ -94,18 +94,19 @@ krt_set_notify(struct krt_proto *p, net *net, rte *new, rte *old)
 }
 
 void
-krt_set_start(struct krt_proto *x, int first)
+krt_sys_start(struct krt_proto *x, int first)
 {
   if (if_scan_sock < 0)
     bug("krt set: missing socket");
 }
 
 void
-krt_set_construct(struct krt_config *c)
+krt_sys_shutdown(struct krt_proto *x, int last)
 {
-}
+} 
 
 void
-krt_set_shutdown(struct krt_proto *x, int last)
+krt_sys_construct(struct krt_config *c)
 {
-} 
+}
+
diff --git a/sysdep/unix/krt-set.h b/sysdep/unix/krt-set.h
index 87cffcfc..8ef3170e 100644
--- a/sysdep/unix/krt-set.h
+++ b/sysdep/unix/krt-set.h
@@ -1,5 +1,5 @@
 /*
- *	BIRD -- Unix Kernel Route Syncer -- Setting
+ *	BIRD -- Unix Kernel Route Syncer
  *
  *	(c) 1998--2000 Martin Mares <mj@ucw.cz>
  *
@@ -9,13 +9,19 @@
 #ifndef _BIRD_KRT_SET_H_
 #define _BIRD_KRT_SET_H_
 
-struct krt_set_params {
+struct krt_params {
 };
 
-struct krt_set_status {
+struct krt_status {
 };
 
-static inline int krt_set_params_same(struct krt_set_params *o UNUSED, struct krt_set_params *n UNUSED) { return 1; }
-static inline void krt_set_copy_params(struct krt_set_params *d UNUSED, struct krt_set_params *s UNUSED) { }
+
+static inline void krt_sys_init(struct krt_proto *p UNUSED) { }
+static inline int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n UNUSED, struct krt_config *o UNUSED) { return 1; }
+
+static inline void krt_sys_preconfig(struct config *c UNUSED) { }
+static inline void krt_sys_postconfig(struct krt_config *c UNUSED) { }
+static inline void krt_sys_init_config(struct krt_config *c UNUSED) { }
+static inline void krt_sys_copy_config(struct krt_config *d UNUSED, struct krt_config *s UNUSED) { }
 
 #endif
diff --git a/sysdep/unix/krt.Y b/sysdep/unix/krt.Y
index c0141f57..469c136d 100644
--- a/sysdep/unix/krt.Y
+++ b/sysdep/unix/krt.Y
@@ -25,17 +25,7 @@ CF_GRAMMAR
 
 CF_ADDTO(proto, kern_proto '}')
 
-kern_proto_start: proto_start KERNEL {
-#ifndef CONFIG_MULTIPLE_TABLES
-     if (cf_krt)
-       cf_error("Kernel protocol already defined");
-#endif
-     cf_krt = this_proto = proto_config_new(&proto_unix_kernel, sizeof(struct krt_config), $1);
-     THIS_KRT->scan_time = 60;
-     THIS_KRT->learn = THIS_KRT->persist = 0;
-     krt_scan_construct(THIS_KRT);
-     krt_set_construct(THIS_KRT);
-   }
+kern_proto_start: proto_start KERNEL { this_proto = krt_init_config($1); }
  ;
 
 CF_ADDTO(kern_proto, kern_proto_start proto_name '{')
@@ -62,14 +52,7 @@ kern_item:
 
 CF_ADDTO(proto, kif_proto '}')
 
-kif_proto_start: proto_start DEVICE {
-     if (cf_kif)
-       cf_error("Kernel device protocol already defined");
-     cf_kif = this_proto = proto_config_new(&proto_unix_iface, sizeof(struct kif_config), $1);
-     THIS_KIF->scan_time = 60;
-     init_list(&THIS_KIF->primary);
-     krt_if_construct(THIS_KIF);
-   }
+kif_proto_start: proto_start DEVICE { this_proto = kif_init_config($1); }
  ;
 
 CF_ADDTO(kif_proto, kif_proto_start proto_name '{')
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index de97a092..cc03bb88 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -66,33 +66,26 @@ krt_io_init(void)
 {
   krt_pool = rp_new(&root_pool, "Kernel Syncer");
   krt_filter_lp = lp_new(krt_pool, 4080);
-  krt_if_io_init();
+  kif_sys_io_init();
 }
 
 /*
  *	Interfaces
  */
 
-struct proto_config *cf_kif;
-
+static struct kif_config *kif_cf;
 static struct kif_proto *kif_proto;
 static timer *kif_scan_timer;
 static bird_clock_t kif_last_shot;
 
 static void
-kif_preconfig(struct protocol *P UNUSED, struct config *c UNUSED)
-{
-  cf_kif = NULL;
-}
-
-static void
 kif_scan(timer *t)
 {
   struct kif_proto *p = t->data;
 
   KRT_TRACE(p, D_EVENTS, "Scanning interfaces");
   kif_last_shot = now;
-  krt_if_scan(p);
+  kif_do_scan(p);
 }
 
 static void
@@ -112,45 +105,6 @@ kif_request_scan(void)
     tm_start(kif_scan_timer, 1);
 }
 
-static struct proto *
-kif_init(struct proto_config *c)
-{
-  struct kif_proto *p = proto_new(c, sizeof(struct kif_proto));
-  return &p->p;
-}
-
-static int
-kif_start(struct proto *P)
-{
-  struct kif_proto *p = (struct kif_proto *) P;
-
-  kif_proto = p;
-  krt_if_start(p);
-
-  /* Start periodic interface scanning */
-  kif_scan_timer = tm_new(P->pool);
-  kif_scan_timer->hook = kif_scan;
-  kif_scan_timer->data = p;
-  kif_scan_timer->recurrent = KIF_CF->scan_time;
-  kif_scan(kif_scan_timer);
-  tm_start(kif_scan_timer, KIF_CF->scan_time);
-
-  return PS_UP;
-}
-
-static int
-kif_shutdown(struct proto *P)
-{
-  struct kif_proto *p = (struct kif_proto *) P;
-
-  tm_stop(kif_scan_timer);
-  krt_if_shutdown(p);
-  kif_proto = NULL;
-
-  return PS_DOWN;
-}
-
-
 static inline int
 prefer_scope(struct ifa *a, struct ifa *b)
 { return (a->scope > SCOPE_LINK) && (b->scope <= SCOPE_LINK); }
@@ -193,13 +147,53 @@ kif_choose_primary(struct iface *i)
 }
 
 
+static struct proto *
+kif_init(struct proto_config *c)
+{
+  struct kif_proto *p = proto_new(c, sizeof(struct kif_proto));
+
+  kif_sys_init(p);
+  return &p->p;
+}
+
+static int
+kif_start(struct proto *P)
+{
+  struct kif_proto *p = (struct kif_proto *) P;
+
+  kif_proto = p;
+  kif_sys_start(p);
+
+  /* Start periodic interface scanning */
+  kif_scan_timer = tm_new(P->pool);
+  kif_scan_timer->hook = kif_scan;
+  kif_scan_timer->data = p;
+  kif_scan_timer->recurrent = KIF_CF->scan_time;
+  kif_scan(kif_scan_timer);
+  tm_start(kif_scan_timer, KIF_CF->scan_time);
+
+  return PS_UP;
+}
+
+static int
+kif_shutdown(struct proto *P)
+{
+  struct kif_proto *p = (struct kif_proto *) P;
+
+  tm_stop(kif_scan_timer);
+  kif_sys_shutdown(p);
+  kif_proto = NULL;
+
+  return PS_DOWN;
+}
+
 static int
 kif_reconfigure(struct proto *p, struct proto_config *new)
 {
   struct kif_config *o = (struct kif_config *) p->cf;
   struct kif_config *n = (struct kif_config *) new;
 
-  if (!kif_params_same(&o->iface, &n->iface))
+  if (!kif_sys_reconfigure((struct kif_proto *) p, n, o))
     return 0;
 
   if (o->scan_time != n->scan_time)
@@ -224,6 +218,28 @@ kif_reconfigure(struct proto *p, struct proto_config *new)
   return 1;
 }
 
+
+static void
+kif_preconfig(struct protocol *P UNUSED, struct config *c)
+{
+  kif_cf = NULL;
+  kif_sys_preconfig(c);
+}
+
+struct proto_config *
+kif_init_config(int class)
+{
+  if (kif_cf)
+    cf_error("Kernel device protocol already defined");
+
+  kif_cf = (struct kif_config *) proto_config_new(&proto_unix_iface, sizeof(struct kif_config), class);
+  kif_cf->scan_time = 60;
+  init_list(&kif_cf->primary);
+
+  kif_sys_init_config(kif_cf);
+  return (struct proto_config *) kif_cf;
+}
+
 static void
 kif_copy_config(struct proto_config *dest, struct proto_config *src)
 {
@@ -231,13 +247,13 @@ kif_copy_config(struct proto_config *dest, struct proto_config *src)
   struct kif_config *s = (struct kif_config *) src;
 
   /* Shallow copy of everything (just scan_time currently) */
-  proto_copy_rest(dest, src, sizeof(struct krt_config));
+  proto_copy_rest(dest, src, sizeof(struct kif_config));
 
   /* Copy primary addr list */
   cfg_copy_list(&d->primary, &s->primary, sizeof(struct kif_primary_item));
 
   /* Fix sysdep parts */
-  kif_copy_params(&d->iface, &s->iface);
+  kif_sys_copy_config(d, s);
 }
 
 
@@ -558,7 +574,7 @@ krt_flush_routes(struct krt_proto *p)
 	      a->source != RTS_DEVICE && a->source != RTS_INHERIT)
 	    {
 	      /* FIXME: this does not work if gw is changed in export filter */
-	      krt_set_notify(p, e->net, NULL, e, NULL);
+	      krt_do_notify(p, e->net, NULL, e, NULL);
 	      n->n.flags &= ~KRF_INSTALLED;
 	    }
 	}
@@ -717,7 +733,7 @@ krt_prune(struct krt_proto *p)
 	  if (new && (f->flags & KRF_INSTALLED))
 	    {
 	      krt_trace_in(p, new, "reinstalling");
-	      krt_set_notify(p, n, new, NULL, tmpa);
+	      krt_do_notify(p, n, new, NULL, tmpa);
 	    }
 	  break;
 	case KRF_SEEN:
@@ -726,11 +742,11 @@ krt_prune(struct krt_proto *p)
 	  break;
 	case KRF_UPDATE:
 	  krt_trace_in(p, new, "updating");
-	  krt_set_notify(p, n, new, old, tmpa);
+	  krt_do_notify(p, n, new, old, tmpa);
 	  break;
 	case KRF_DELETE:
 	  krt_trace_in(p, old, "deleting");
-	  krt_set_notify(p, n, NULL, old, NULL);
+	  krt_do_notify(p, n, NULL, old, NULL);
 	  break;
 	default:
 	  bug("krt_prune: invalid route status");
@@ -766,7 +782,7 @@ krt_got_route_async(struct krt_proto *p, rte *e, int new)
       if (new)
 	{
 	  krt_trace_in(p, e, "[redirect] deleting");
-	  krt_set_notify(p, net, NULL, e, NULL);
+	  krt_do_notify(p, net, NULL, e, NULL);
 	}
       /* If !new, it is probably echo of our deletion */
       break;
@@ -800,7 +816,7 @@ krt_scan(timer *t UNUSED)
     p = SKIP_BACK(struct krt_proto, instance_node, HEAD(krt_instance_list));
     if (p->instance_node.next)
       KRT_TRACE(p, D_EVENTS, "Scanning routing table");
-    krt_scan_fire(NULL);
+    krt_do_scan(NULL);
     WALK_LIST(q, krt_instance_list)
       {
 	p = SKIP_BACK(struct krt_proto, instance_node, q);
@@ -810,14 +826,45 @@ krt_scan(timer *t UNUSED)
 #else
   p = t->data;
   KRT_TRACE(p, D_EVENTS, "Scanning routing table");
-  krt_scan_fire(p);
+  krt_do_scan(p);
   krt_prune(p);
 #endif
 }
 
+
 /*
  *	Updates
  */
+
+static struct ea_list *
+krt_make_tmp_attrs(rte *rt, struct linpool *pool)
+{
+  struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 2 * sizeof(eattr));
+
+  l->next = NULL;
+  l->flags = EALF_SORTED;
+  l->count = 2;
+
+  l->attrs[0].id = EA_KRT_SOURCE;
+  l->attrs[0].flags = 0;
+  l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP;
+  l->attrs[0].u.data = rt->u.krt.proto;
+
+  l->attrs[1].id = EA_KRT_METRIC;
+  l->attrs[1].flags = 0;
+  l->attrs[1].type = EAF_TYPE_INT | EAF_TEMP;
+  l->attrs[1].u.data = rt->u.krt.metric;
+
+  return l;
+}
+
+static void
+krt_store_tmp_attrs(rte *rt, struct ea_list *attrs)
+{
+  /* EA_KRT_SOURCE is read-only */
+  rt->u.krt.metric = ea_get_int(attrs, EA_KRT_METRIC, 0);
+}
+
 static int
 krt_import_control(struct proto *P, rte **new, ea_list **attrs, struct linpool *pool)
 {
@@ -853,37 +900,37 @@ krt_notify(struct proto *P, struct rtable *table UNUSED, net *net,
   else
     net->n.flags &= ~KRF_INSTALLED;
   if (p->initialized)		/* Before first scan we don't touch the routes */
-    krt_set_notify(p, net, new, old, eattrs);
+    krt_do_notify(p, net, new, old, eattrs);
 }
 
+static int
+krt_rte_same(rte *a, rte *b)
+{
+  /* src is always KRT_SRC_ALIEN and type is irrelevant */
+  return (a->u.krt.proto == b->u.krt.proto) && (a->u.krt.metric == b->u.krt.metric);
+}
+
+
 /*
  *	Protocol glue
  */
 
-struct proto_config *cf_krt;
+struct krt_config *krt_cf;
 
-static void
-krt_preconfig(struct protocol *P UNUSED, struct config *c)
-{
-  cf_krt = NULL;
-  krt_scan_preconfig(c);
-}
-
-static void
-krt_postconfig(struct proto_config *C)
+static struct proto *
+krt_init(struct proto_config *c)
 {
-  struct krt_config *c = (struct krt_config *) C;
+  struct krt_proto *p = proto_new(c, sizeof(struct krt_proto));
 
-#ifdef CONFIG_ALL_TABLES_AT_ONCE
-  struct krt_config *first = (struct krt_config *) cf_krt;
-  if (first->scan_time != c->scan_time)
-    cf_error("All kernel syncers must use the same table scan interval");
-#endif
+  p->p.accept_ra_types = RA_OPTIMAL;
+  p->p.make_tmp_attrs = krt_make_tmp_attrs;
+  p->p.store_tmp_attrs = krt_store_tmp_attrs;
+  p->p.import_control = krt_import_control;
+  p->p.rt_notify = krt_notify;
+  p->p.rte_same = krt_rte_same;
 
-  if (C->table->krt_attached)
-    cf_error("Kernel syncer (%s) already attached to table %s", C->table->krt_attached->name, C->table->name);
-  C->table->krt_attached = C;
-  krt_scan_postconfig(c);
+  krt_sys_init(p);
+  return &p->p;
 }
 
 static timer *
@@ -920,8 +967,7 @@ krt_start(struct proto *P)
   krt_learn_init(p);
 #endif
 
-  krt_scan_start(p, first);
-  krt_set_start(p, first);
+  krt_sys_start(p, first);
 
   /* Start periodic routing table scanning */
 #ifdef CONFIG_ALL_TABLES_AT_ONCE
@@ -955,8 +1001,7 @@ krt_shutdown(struct proto *P)
   if (p->initialized && !KRT_CF->persist)
     krt_flush_routes(p);
 
-  krt_set_shutdown(p, last);
-  krt_scan_shutdown(p, last);
+  krt_sys_shutdown(p, last);
 
 #ifdef CONFIG_ALL_TABLES_AT_ONCE
   if (last)
@@ -966,69 +1011,55 @@ krt_shutdown(struct proto *P)
   return PS_DOWN;
 }
 
-static struct ea_list *
-krt_make_tmp_attrs(rte *rt, struct linpool *pool)
+static int
+krt_reconfigure(struct proto *p, struct proto_config *new)
 {
-  struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 2 * sizeof(eattr));
-
-  l->next = NULL;
-  l->flags = EALF_SORTED;
-  l->count = 2;
-
-  l->attrs[0].id = EA_KRT_SOURCE;
-  l->attrs[0].flags = 0;
-  l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP;
-  l->attrs[0].u.data = rt->u.krt.proto;
+  struct krt_config *o = (struct krt_config *) p->cf;
+  struct krt_config *n = (struct krt_config *) new;
 
-  l->attrs[1].id = EA_KRT_METRIC;
-  l->attrs[1].flags = 0;
-  l->attrs[1].type = EAF_TYPE_INT | EAF_TEMP;
-  l->attrs[1].u.data = rt->u.krt.metric;
+  if (!krt_sys_reconfigure((struct krt_proto *) p, n, o))
+    return 0;
 
-  return l;
+  /* persist needn't be the same */
+  return o->scan_time == n->scan_time && o->learn == n->learn && o->devroutes == n->devroutes;
 }
 
 static void
-krt_store_tmp_attrs(rte *rt, struct ea_list *attrs)
-{
-  /* EA_KRT_SOURCE is read-only */
-  rt->u.krt.metric = ea_get_int(attrs, EA_KRT_METRIC, 0);
-}
-
-static int
-krt_rte_same(rte *a, rte *b)
+krt_preconfig(struct protocol *P UNUSED, struct config *c)
 {
-  /* src is always KRT_SRC_ALIEN and type is irrelevant */
-  return (a->u.krt.proto == b->u.krt.proto) && (a->u.krt.metric == b->u.krt.metric);
+  krt_cf = NULL;
+  krt_sys_preconfig(c);
 }
 
-static struct proto *
-krt_init(struct proto_config *c)
+static void
+krt_postconfig(struct proto_config *C)
 {
-  struct krt_proto *p = proto_new(c, sizeof(struct krt_proto));
+  struct krt_config *c = (struct krt_config *) C;
 
-  p->p.accept_ra_types = RA_OPTIMAL;
-  p->p.make_tmp_attrs = krt_make_tmp_attrs;
-  p->p.store_tmp_attrs = krt_store_tmp_attrs;
-  p->p.import_control = krt_import_control;
-  p->p.rt_notify = krt_notify;
-  p->p.rte_same = krt_rte_same;
+#ifdef CONFIG_ALL_TABLES_AT_ONCE
+  if (krt_cf->scan_time != c->scan_time)
+    cf_error("All kernel syncers must use the same table scan interval");
+#endif
 
-  return &p->p;
+  if (C->table->krt_attached)
+    cf_error("Kernel syncer (%s) already attached to table %s", C->table->krt_attached->name, C->table->name);
+  C->table->krt_attached = C;
+  krt_sys_postconfig(c);
 }
 
-static int
-krt_reconfigure(struct proto *p, struct proto_config *new)
+struct proto_config *
+krt_init_config(int class)
 {
-  struct krt_config *o = (struct krt_config *) p->cf;
-  struct krt_config *n = (struct krt_config *) new;
+#ifndef CONFIG_MULTIPLE_TABLES
+  if (krt_cf)
+    cf_error("Kernel protocol already defined");
+#endif
+
+  krt_cf = (struct krt_config *) proto_config_new(&proto_unix_kernel, sizeof(struct krt_config), class);
+  krt_cf->scan_time = 60;
 
-  return o->scan_time == n->scan_time
-    && o->learn == n->learn		/* persist needn't be the same */
-    && o->devroutes == n->devroutes
-    && krt_set_params_same(&o->set, &n->set)
-    && krt_scan_params_same(&o->scan, &n->scan)
-    ;
+  krt_sys_init_config(krt_cf);
+  return (struct proto_config *) krt_cf;
 }
 
 static void
@@ -1041,8 +1072,7 @@ krt_copy_config(struct proto_config *dest, struct proto_config *src)
   proto_copy_rest(dest, src, sizeof(struct krt_config));
 
   /* Fix sysdep parts */
-  krt_set_copy_params(&d->set, &s->set);
-  krt_scan_copy_params(&d->scan, &s->scan);
+  krt_sys_copy_config(d, s);
 }
 
 static int
diff --git a/sysdep/unix/krt.h b/sysdep/unix/krt.h
index 19b69e49..a3b5658a 100644
--- a/sysdep/unix/krt.h
+++ b/sysdep/unix/krt.h
@@ -45,8 +45,7 @@ extern struct protocol proto_unix_kernel;
 
 struct krt_config {
   struct proto_config c;
-  struct krt_set_params set;
-  struct krt_scan_params scan;
+  struct krt_params sys;	/* Sysdep params */
   int persist;			/* Keep routes when we exit */
   int scan_time;		/* How often we re-scan routes */
   int learn;			/* Learn routes from other sources */
@@ -55,9 +54,7 @@ struct krt_config {
 
 struct krt_proto {
   struct proto p;
-  struct krt_set_status set;
-  struct krt_scan_status scan;
-  struct krt_if_status iface;
+  struct krt_status sys;	/* Sysdep state */
 #ifdef KRT_ALLOW_LEARN
   struct rtable krt_table;	/* Internal table of inherited routes */
 #endif
@@ -69,7 +66,6 @@ struct krt_proto {
   int initialized;		/* First scan has already been finished */
 };
 
-extern struct proto_config *cf_krt;
 extern pool *krt_pool;
 
 #define KRT_CF ((struct krt_config *)p->p.cf)
@@ -79,6 +75,7 @@ extern pool *krt_pool;
   if (pr->p.debug & fl)				\
     { log(L_TRACE "%s: " msg, pr->p.name , ## args); } } while(0)
 
+struct proto_config * kif_init_config(int class);
 void kif_request_scan(void);
 void krt_got_route(struct krt_proto *p, struct rte *e);
 void krt_got_route_async(struct krt_proto *p, struct rte *e, int new);
@@ -101,46 +98,50 @@ struct kif_primary_item {
 
 struct kif_config {
   struct proto_config c;
-  struct krt_if_params iface;
+  struct kif_params sys;	/* Sysdep params */
   int scan_time;		/* How often we re-scan interfaces */
   list primary;			/* Preferences for primary addresses (struct kif_primary_item) */
 };
 
 struct kif_proto {
   struct proto p;
-  struct krt_if_status iface;
+  struct kif_status sys;	/* Sysdep state */
 };
 
-extern struct proto_config *cf_kif;
-
 #define KIF_CF ((struct kif_config *)p->p.cf)
 
-/* krt-scan.c */
+struct proto_config * krt_init_config(int class);
+
 
-void krt_scan_preconfig(struct config *);
-void krt_scan_postconfig(struct krt_config *);
-void krt_scan_construct(struct krt_config *);
-void krt_scan_start(struct krt_proto *, int);
-void krt_scan_shutdown(struct krt_proto *, int);
+/* krt-scan.c */
 
-void krt_scan_fire(struct krt_proto *);
+void krt_sys_init(struct krt_proto *);
+void krt_sys_start(struct krt_proto *, int);
+void krt_sys_shutdown(struct krt_proto *, int);
+int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o);
 
-/* krt-set.c */
+void krt_sys_preconfig(struct config *);
+void krt_sys_postconfig(struct krt_config *);
+void krt_sys_init_config(struct krt_config *);
+void krt_sys_copy_config(struct krt_config *, struct krt_config *);
 
-void krt_set_construct(struct krt_config *);
-void krt_set_start(struct krt_proto *, int);
-void krt_set_shutdown(struct krt_proto *, int);
+int  krt_capable(rte *e);
+void krt_do_scan(struct krt_proto *);
+void krt_do_notify(struct krt_proto *p, net *n, rte *new, rte *old, struct ea_list *eattrs);
 
-int krt_capable(rte *e);
-void krt_set_notify(struct krt_proto *p, net *n, rte *new, rte *old, struct ea_list *eattrs);
 
 /* krt-iface.c */
 
-void krt_if_construct(struct kif_config *);
-void krt_if_start(struct kif_proto *);
-void krt_if_shutdown(struct kif_proto *);
+void kif_sys_init(struct kif_proto *);
+void kif_sys_start(struct kif_proto *);
+void kif_sys_shutdown(struct kif_proto *);
+int kif_sys_reconfigure(struct kif_proto *, struct kif_config *, struct kif_config *);
+
+void kif_sys_init_config(struct kif_config *);
+void kif_sys_copy_config(struct kif_config *, struct kif_config *);
+
+void kif_do_scan(struct kif_proto *);
 
-void krt_if_scan(struct kif_proto *);
-void krt_if_io_init(void);
+// void kif_sys_io_init(void);
 
 #endif