Getting creation and modification time of an IPv6 interface address

[Hartmut.Brandt at dlr.de]

Hi,

I'm working on the IpAddressTable for bsnmpd. This table has two rows ipAddressCreated and ipAddressLastUpdated which seem to
correspond to the created and changed fields of the struct in6_ifaddr. Because there seems no way (except for poking in the
kernel memory) to get at these values I have added an ioctl to get them much in the spirit of the other ioctls for IPv6 addresses.

I'm not sure how the ioctl codes are allocated so I just took the next available one. If this looks ok and there are no principal problems,
I would like to commit that.

harti

Index: in6.c
===================================================================
RCS file: /usr/cvsup/src/sys/netinet6/in6.c,v
retrieving revision 1.121.2.8
diff -u -r1.121.2.8 in6.c
--- in6.c	28 Oct 2009 21:45:25 -0000	1.121.2.8
+++ in6.c	25 Nov 2009 17:41:40 -0000
@@ -312,6 +312,7 @@
 	case SIOCSIFALIFETIME_IN6:
 	case SIOCGIFSTAT_IN6:
 	case SIOCGIFSTAT_ICMP6:
+	case SIOCGIFATIMES_IN6:
 		sa6 = &ifr->ifr_addr;
 		break;
 	default:
@@ -383,6 +384,7 @@
 	case SIOCGIFNETMASK_IN6:
 	case SIOCGIFDSTADDR_IN6:
 	case SIOCGIFALIFETIME_IN6:
+	case SIOCGIFATIMES_IN6:
 		/* must think again about its semantics */
 		if (ia == NULL) {
 			error = EADDRNOTAVAIL;
@@ -652,6 +654,11 @@
 			prelist_remove(pr);
 		EVENTHANDLER_INVOKE(ifaddr_event, ifp);
 		break;
+
+	case SIOCGIFATIMES_IN6:
+		ifr->ifr_ifru.ifru_times[0] = ia->ia6_createtime;
+		ifr->ifr_ifru.ifru_times[1] = ia->ia6_updatetime;
+		break;
 	}
 
 	default:
Index: in6_var.h
===================================================================
RCS file: /usr/cvsup/src/sys/netinet6/in6_var.h,v
retrieving revision 1.45.2.1
diff -u -r1.45.2.1 in6_var.h
--- in6_var.h	3 Aug 2009 08:13:06 -0000	1.45.2.1
+++ in6_var.h	25 Nov 2009 17:07:34 -0000
@@ -277,6 +277,7 @@
 		struct in6_ifstat ifru_stat;
 		struct icmp6_ifstat ifru_icmp6stat;
 		u_int32_t ifru_scope_id[16];
+		time_t	ifru_times[2];
 	} ifr_ifru;
 };
 
@@ -463,6 +464,8 @@
 #define SIOCAADDRCTL_POLICY	_IOW('u', 108, struct in6_addrpolicy)
 #define SIOCDADDRCTL_POLICY	_IOW('u', 109, struct in6_addrpolicy)
 
+#define	SIOCGIFATIMES_IN6	_IOWR('i', 110, struct in6_ifreq)
+
 #define IN6_IFF_ANYCAST		0x01	/* anycast address */
 #define IN6_IFF_TENTATIVE	0x02	/* tentative address */
 #define IN6_IFF_DUPLICATED	0x04	/* DAD detected duplicate */