Author: emax
Date: Tue Jun 5 21:35:47 2012
New Revision: 236644
URL: http://svn.freebsd.org/changeset/base/236644
Log:
Add a very simple debug tool that would dump list of interfaces,
addresses on each interface, and, associated refcounter. I found
it handy to check for address refcounter leaks.
Added:
head/tools/tools/ifpifa/
head/tools/tools/ifpifa/Makefile (contents, props changed)
head/tools/tools/ifpifa/ifpifa.c (contents, props changed)
Added: head/tools/tools/ifpifa/Makefile
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/tools/tools/ifpifa/Makefile Tue Jun 5 21:35:47 2012
(r236644)
@@ -0,0 +1,10 @@
+# $FreeBSD$
+
+PROG= ifpifa
+NO_MAN=
+WARNS?=6
+BINDIR?=/usr/local/bin
+DPADD=${LIBKVM}
+LDADD=-lkvm
+
+.include <bsd.prog.mk>
Added: head/tools/tools/ifpifa/ifpifa.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/tools/tools/ifpifa/ifpifa.c Tue Jun 5 21:35:47 2012
(r236644)
@@ -0,0 +1,190 @@
+/*-
+ * Copyright (c) 2012 maksim yevmenkin <e...@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* gcc -Wall -ggdb ifpifa.c -lkvm -o ifpifa */
+
+#include <sys/types.h>
+#include <sys/callout.h>
+#include <sys/cdefs.h>
+#include <sys/param.h>
+#include <sys/protosw.h>
+#include <sys/queue.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/ethernet.h>
+#include <netinet/in.h>
+#include <netinet/in_var.h>
+#include <arpa/inet.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <kvm.h>
+#include <limits.h>
+#include <nlist.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+__FBSDID("$FreeBSD$");
+
+static struct nlist nl[] = {
+#define N_IFNET 0
+ { .n_name = "_ifnet", },
+ { .n_name = NULL, },
+};
+
+static int
+kread(kvm_t *kd, u_long addr, char *buffer, int size)
+{
+ if (kd == NULL || buffer == NULL)
+ return (-1);
+
+ if (kvm_read(kd, addr, buffer, size) != size) {
+ warnx("kvm_read: %s", kvm_geterr(kd));
+ return (-1);
+ }
+
+ return (0);
+}
+
+int
+main(void)
+{
+ kvm_t *kd;
+ char errbuf[_POSIX2_LINE_MAX];
+ u_long ifnetaddr, ifnetaddr_next;
+ u_long ifaddraddr, ifaddraddr_next;
+ struct ifnet ifnet;
+ struct ifnethead ifnethead;
+ union {
+ struct ifaddr ifa;
+ struct in_ifaddr in;
+ struct in6_ifaddr in6;
+ } ifaddr;
+ union {
+ struct sockaddr *sa;
+ struct sockaddr_dl *sal;
+ struct sockaddr_in *sa4;
+ struct sockaddr_in6 *sa6;
+ } sa;
+ char addr[INET6_ADDRSTRLEN];
+
+ kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf);
+ if (kd == NULL) {
+ warnx("kvm_openfiles: %s", errbuf);
+ exit(0);
+ }
+
+ if (kvm_nlist(kd, nl) < 0) {
+ warnx("kvm_nlist: %s", kvm_geterr(kd));
+ goto out;
+ }
+
+ if (nl[N_IFNET].n_type == 0) {
+ warnx("kvm_nlist: no namelist");
+ goto out;
+ }
+
+ if (kread(kd, nl[N_IFNET].n_value,
+ (char *) &ifnethead, sizeof(ifnethead)) != 0)
+ goto out;
+
+ for (ifnetaddr = (u_long) TAILQ_FIRST(&ifnethead);
+ ifnetaddr != 0;
+ ifnetaddr = ifnetaddr_next) {
+ if (kread(kd, ifnetaddr, (char *) &ifnet, sizeof(ifnet)) != 0)
+ goto out;
+ ifnetaddr_next = (u_long) TAILQ_NEXT(&ifnet, if_link);
+
+ printf("%s\n", ifnet.if_xname);
+
+ for (ifaddraddr = (u_long) TAILQ_FIRST(&ifnet.if_addrhead);
+ ifaddraddr != 0;
+ ifaddraddr = ifaddraddr_next) {
+ if (kread(kd, ifaddraddr,
+ (char *) &ifaddr, sizeof(ifaddr)) != 0)
+ goto out;
+
+ ifaddraddr_next = (u_long)
+ TAILQ_NEXT(&ifaddr.ifa, ifa_link);
+
+ sa.sa = (struct sockaddr *)(
+ (unsigned char *) ifaddr.ifa.ifa_addr -
+ (unsigned char *) ifaddraddr +
+ (unsigned char *) &ifaddr);
+
+ switch (sa.sa->sa_family) {
+ case AF_LINK:
+ switch (sa.sal->sdl_type) {
+ case IFT_ETHER:
+ case IFT_FDDI:
+ ether_ntoa_r((struct ether_addr * )
+ LLADDR(sa.sal), addr);
+ break;
+
+ case IFT_LOOP:
+ strcpy(addr, "loopback");
+ break;
+
+ default:
+ snprintf(addr, sizeof(addr),
+ "<Link type %#x>",
+ sa.sal->sdl_type);
+ break;
+ }
+ break;
+
+ case AF_INET:
+ inet_ntop(AF_INET, &sa.sa4->sin_addr,
+ addr, sizeof(addr));
+ break;
+
+ case AF_INET6:
+ inet_ntop(AF_INET6, &sa.sa6->sin6_addr,
+ addr, sizeof(addr));
+ break;
+
+ default:
+ snprintf(addr, sizeof(addr), "family=%d",
+ sa.sa->sa_family);
+ break;
+ }
+
+ printf("\t%s ifa_refcnt=%u\n",
+ addr, ifaddr.ifa.ifa_refcnt);
+ }
+ }
+out:
+ kvm_close(kd);
+
+ return (0);
+}
+
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