[src/trunk]: src/tests/net/if_loop Repeat the fragmentation on lo0 test, but ...

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

details:   https://anonhg.NetBSD.org/src/rev/5d7095fcec6a
branches:  trunk
changeset: 764009:5d7095fcec6a
user:      martin <martin%NetBSD.org@localhost>
date:      Sun Apr 10 11:31:48 2011 +0000

description:
Repeat the fragmentation on lo0 test, but with checksum on IFF_LOOPBACK
interfaces enabled.

diffstat:

 tests/net/if_loop/t_pr.c |  126 ++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 113 insertions(+), 13 deletions(-)

diffs (175 lines):

diff -r 0b31d5a18203 -r 5d7095fcec6a tests/net/if_loop/t_pr.c
--- a/tests/net/if_loop/t_pr.c  Sun Apr 10 10:59:13 2011 +0000
+++ b/tests/net/if_loop/t_pr.c  Sun Apr 10 11:31:48 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_pr.c,v 1.4 2011/04/09 20:42:12 martin Exp $  */
+/*     $NetBSD: t_pr.c,v 1.5 2011/04/10 11:31:48 martin Exp $  */
 
 /*-
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -29,11 +29,12 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: t_pr.c,v 1.4 2011/04/09 20:42:12 martin Exp $");
+__RCSID("$NetBSD: t_pr.c,v 1.5 2011/04/10 11:31:48 martin Exp $");
 #endif /* not lint */
 
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/sysctl.h>
 
 #include <netinet/in.h>
 #include <net/route.h>
@@ -51,15 +52,11 @@
 #include "../config/netconfig.c"
 #include "../../h_macros.h"
 
-ATF_TC(loopmtu);
-ATF_TC_HEAD(loopmtu, tc)
-{
-
-       atf_tc_set_md_var(tc, "descr", "test lo0 fragmentation");
-       /* PR kern/43664 */
-}
-
-ATF_TC_BODY(loopmtu, tc)
+/*
+ * Prepare rump server, configure interface and route to cause fragmentation
+ */
+static void
+setup(void)
 {
        char ifname[IFNAMSIZ];
        struct {
@@ -68,11 +65,12 @@
        } m_rtmsg;
 #define rtm m_rtmsg.m_rtm
 #define rsin m_rtmsg.m_sin
-       struct sockaddr_in sin;
        struct ifreq ifr;
-       char data[2000];
        int s;
 
+       static bool init_done = false;
+       if (init_done) return;
+
        strcpy(ifname, "lo0");
        rump_init();
 
@@ -113,6 +111,106 @@
                atf_tc_fail_errno("set route mtu");
        rump_sys_close(s);
 
+       init_done = true;
+}
+
+/*
+ * Turn on checksums on loopback interfaces
+ */
+static int
+enable_locsums(void)
+{
+       struct sysctlnode q, ans[256];
+       int mib[5], enable;
+       size_t alen;
+       unsigned i;
+
+       mib[0] = CTL_NET;
+       mib[1] = PF_INET;
+       mib[2] = IPPROTO_IP;
+       mib[3] = CTL_QUERY;
+       alen = sizeof(ans);
+
+       memset(&q, 0, sizeof(q));
+       q.sysctl_flags = SYSCTL_VERSION;
+
+       if (rump_sys___sysctl(mib, 4, ans, &alen, &q, sizeof(q)) == -1)
+               return -1;
+
+       for (i = 0; i < __arraycount(ans); i++)
+               if (strcmp("do_loopback_cksum", ans[i].sysctl_name) == 0)
+                       break;
+       if (i == __arraycount(ans)) {
+               errno = ENOENT;
+               return -1;
+       }
+
+       mib[3] = ans[i].sysctl_num;
+
+       enable = 1;
+       if (rump_sys___sysctl(mib, 4, NULL, NULL, &enable,
+           sizeof(enable)) == -1)
+               return errno;
+
+       return 0;
+}
+
+ATF_TC(loopmtu);
+ATF_TC_HEAD(loopmtu, tc)
+{
+
+       atf_tc_set_md_var(tc, "descr", "test lo0 fragmentation");
+       /* PR kern/43664 */
+}
+
+ATF_TC_BODY(loopmtu, tc)
+{
+       struct sockaddr_in sin;
+       char data[2000];
+       int s;
+
+       setup();
+
+       /* open raw socket */
+       s = rump_sys_socket(PF_INET, SOCK_RAW, 0);
+       if (s == -1)
+               atf_tc_fail_errno("raw socket");
+
+       /* then, send data */
+       memset(&sin, 0, sizeof(sin));
+       sin.sin_family = AF_INET;
+       sin.sin_len = sizeof(sin);
+       sin.sin_port = htons(12345);
+       sin.sin_addr.s_addr = inet_addr("127.0.0.1");
+
+       /*
+        * Should not fail anymore, PR has been fixed...
+        *
+        * atf_tc_expect_signal(SIGABRT, "PR kern/43664");
+        */
+       if (rump_sys_sendto(s, data, sizeof(data), 0,
+           (struct sockaddr *)&sin, sizeof(sin)) == -1)
+               atf_tc_fail_errno("sendto failed");
+}
+
+ATF_TC(loopmtu_csum);
+ATF_TC_HEAD(loopmtu_csum, tc)
+{
+
+       atf_tc_set_md_var(tc, "descr", "test lo0 fragmentation with checksums");
+       /* PR kern/43664 */
+}
+
+ATF_TC_BODY(loopmtu_csum, tc)
+{
+       struct sockaddr_in sin;
+       char data[2000];
+       int s;
+
+       setup();
+
+       ATF_CHECK(enable_locsums() == 0);
+
        /* open raw socket */
        s = rump_sys_socket(PF_INET, SOCK_RAW, 0);
        if (s == -1)
@@ -139,6 +237,8 @@
 {
 
        ATF_TP_ADD_TC(tp, loopmtu);
+       ATF_TP_ADD_TC(tp, loopmtu_csum);
 
        return atf_no_error();
 }
+