[src/trunk]: src/usr.sbin/ifwatchd Now that sppp announces address additions ...

[roy <roy%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0856fd7c7593
branches:  trunk
changeset: 818144:0856fd7c7593
user:      roy <roy%NetBSD.org@localhost>
date:      Thu Sep 29 15:21:09 2016 +0000

description:
Now that sppp announces address additions and removals with state
flags, we no longer need the custom sppp code to detect if we are
connected or not.

Add commentary on if we really need to handle RTM_DELADDR only when
detached.

diffstat:

 usr.sbin/ifwatchd/ifwatchd.c |  71 ++-----------------------------------------
 1 files changed, 4 insertions(+), 67 deletions(-)

diffs (115 lines):

diff -r 80eaea94666e -r 0856fd7c7593 usr.sbin/ifwatchd/ifwatchd.c
--- a/usr.sbin/ifwatchd/ifwatchd.c      Thu Sep 29 15:18:18 2016 +0000
+++ b/usr.sbin/ifwatchd/ifwatchd.c      Thu Sep 29 15:21:09 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ifwatchd.c,v 1.34 2016/09/29 13:36:30 roy Exp $        */
+/*     $NetBSD: ifwatchd.c,v 1.35 2016/09/29 15:21:09 roy Exp $        */
 
 /*-
  * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
@@ -29,11 +29,6 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-/*
- * Define this for special treatment of sys/net/if_spppsubr.c based interfaces.
- */
-#define SPPP_IF_SUPPORT
-
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/ioctl.h>
@@ -43,9 +38,6 @@
 #include <net/if.h>
 #include <net/if_dl.h>
 #include <net/if_media.h>
-#ifdef SPPP_IF_SUPPORT
-#include <net/if_sppp.h>
-#endif
 #include <net/route.h>
 #include <netinet/in.h>
 #include <netinet/in_var.h>
@@ -79,15 +71,6 @@
 static struct interface_data * find_interface(int index);
 static void run_initial_ups(void);
 
-#ifdef SPPP_IF_SUPPORT
-static int check_is_connected(const char * ifname, int def_retvalue);
-#define if_is_connected(X)     (check_is_connected((X), 1))
-#define if_is_not_connected(X) (!check_is_connected((X), 0))
-#else
-#define        if_is_connected(X)      1
-#define        if_is_not_connected(X)  1
-#endif
-
 /* global variables */
 static int verbose = 0, quiet = 0;
 static int inhibit_initial = 0;
@@ -359,8 +342,8 @@
                        if (aflag == DETACHED)
                                return;         /* XXX set ev to DOWN? */
                }
-               if ((ev == UP && if_is_connected(ifd->ifname)) ||
-                   (ev == DOWN && if_is_not_connected(ifd->ifname)))
+               if ((ev == UP && aflag == READY) ||
+                   (ev == DOWN && aflag == DETACHED /* XXX why DETACHED? */))
                        invoke_script(ifa, brd, ev, ifd->index, ifd->ifname);
        }
 }
@@ -633,55 +616,9 @@
                aflag = check_addrflags(ifa->sa_family, p->ifa_addrflags);
                if (aflag != READY)
                        continue;
-               if (if_is_connected(ifd->ifname))
-                       invoke_script(ifa, p->ifa_dstaddr, UP,
-                           ifd->index, ifd->ifname);
+               invoke_script(ifa, p->ifa_dstaddr, UP, ifd->index, ifd->ifname);
        }
        freeifaddrs(res);
 out:
        close(s);
 }
-
-#ifdef SPPP_IF_SUPPORT
-/*
- * Special case support for in-kernel PPP interfaces.
- * If these are IFF_UP, but have not yet connected or completed authentication
- * we don't want to call the up script in the initial interface scan (there
- * will be an UP event generated later, when IPCP completes, anyway).
- *
- * If this is no if_spppsubr.c based interface, this ioctl just fails and we
- * treat is as connected.
- */
-static int
-check_is_connected(const char *ifname, int def_retval)
-{
-       int s, error;
-       struct spppstatus oldstatus;
-       struct spppstatusncp status;
-
-       memset(&status, 0, sizeof status);
-       strncpy(status.ifname, ifname, sizeof status.ifname);
-       memset(&oldstatus, 0, sizeof oldstatus);
-       strncpy(oldstatus.ifname, ifname, sizeof oldstatus.ifname);
-
-       s = socket(AF_INET, SOCK_DGRAM, 0);
-       if (s < 0)
-               return 1;       /* no idea how to handle this... */
-       error = ioctl(s, SPPPGETSTATUSNCP, &status);
-       if (error != 0) {
-               error = ioctl(s, SPPPGETSTATUS, &oldstatus);
-               if (error != 0) {
-                       /* not if_spppsubr.c based - return default */
-                       close(s);
-                       return def_retval;
-               } else {
-                       /* can't query NCPs, so use default */
-                       status.phase = oldstatus.phase;
-                       status.ncpup = def_retval;
-               }
-       }
-       close(s);
-
-       return status.phase == SPPP_PHASE_NETWORK && status.ncpup > 0;
-}
-#endif