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For the IPv4 multicast membership socket regression test:

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Add command line flags to increase the number of test iterations.
 Be deterministic by default, for automated operation.
 Better document assumptions.
This commit is contained in:
Bruce M Simpson 2007-02-02 21:10:37 +00:00
parent d055815799
commit 3250f640aa
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=166437
1 changed files with 58 additions and 12 deletions
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70
tools/regression/netinet/ipsockopt/ipsockopt.c
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@ -32,14 +32,20 @@
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <err.h>
#include <errno.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static int dorandom = 0;
static int nmcastgroups = IP_MAX_MEMBERSHIPS;
static int verbose = 0;
/*
* The test tool exercises IP-level socket options by interrogating the
* getsockopt()/setsockopt() APIs. It does not currently test that the
@ -634,6 +640,7 @@ test_ip_boolean(int sock, const char *socktypename, int option,
static void
test_ip_multicast_membership(int sock, const char *socktypename)
{
char addrbuf[16];
struct ip_mreq mreq;
uint32_t basegroup;
uint16_t i;
@ -651,38 +658,51 @@ test_ip_multicast_membership(int sock, const char *socktypename)
if (sotype == SOCK_STREAM)
return;
/*
* For SOCK_DGRAM and SOCK_RAW sockets, pick a multicast group ID
* in subnet 224/5 with 11 random bits in the middle, and the groups
* themselves joined in sequential order up to IP_MAX_MEMBERSHIPS.
* The 224/8 range has special meaning, so don't use it.
* The 224/8 range is administratively scoped and has special meaning,
* therefore it is not used for this test.
* If we were not told to be non-deterministic:
* Join multicast groups from 238.1.1.0 up to nmcastgroups.
* Otherwise, pick a multicast group ID in subnet 238/5 with 11 random
* bits in the middle, and join groups in linear order up to nmcastgroups.
*/
basegroup = 0xEE000000; /* 224.0.0.0/5 i.e. 5 bits. */
basegroup |= ((random() % ((1 << 11) - 1)) << 16); /* Mid 11 bits. */
if (dorandom) {
/* be non-deterministic (for interactive operation; a fuller test) */
srandomdev();
basegroup = 0xEE000000; /* 238.0.0.0 */
basegroup |= ((random() % ((1 << 11) - 1)) << 16); /* 11 bits */
} else {
/* be deterministic (for automated operation) */
basegroup = 0xEE010100; /* 238.1.1.0 */
}
/*
* Join the multicast group(s) on the default multicast interface;
* this usually maps to the interface to which the default
* route is pointing.
*/
for (i = 0; i < IP_MAX_MEMBERSHIPS; i++) {
for (i = 0; i < nmcastgroups; i++) {
mreq.imr_multiaddr.s_addr = htonl((basegroup | i));
mreq.imr_interface.s_addr = INADDR_ANY;
inet_ntop(AF_INET, &mreq.imr_multiaddr, addrbuf, sizeof(addrbuf));
if (verbose)
fprintf(stderr, "IP_ADD_MEMBERSHIP %s INADDR_ANY\n", addrbuf);
if (setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq,
sizeof(mreq)) < 0) {
err(-1,
"test_ip_multicast_membership(%d, %s): failed IP_ADD_MEMBERSHIP (%s, %s)",
sock, socktypename,
inet_ntoa(mreq.imr_multiaddr), "INADDR_ANY");
sock, socktypename, addrbuf, "INADDR_ANY");
}
}
for (i = 0; i < IP_MAX_MEMBERSHIPS; i++) {
for (i = 0; i < nmcastgroups; i++) {
mreq.imr_multiaddr.s_addr = htonl((basegroup | i));
mreq.imr_interface.s_addr = INADDR_ANY;
inet_ntop(AF_INET, &mreq.imr_multiaddr, addrbuf, sizeof(addrbuf));
if (verbose)
fprintf(stderr, "IP_DROP_MEMBERSHIP %s INADDR_ANY\n", addrbuf);
if (setsockopt(sock, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq,
sizeof(mreq)) < 0) {
err(-1,
"test_ip_multicast_membership(%d, %s): failed IP_DROP_MEMBERSHIP (%s, %s)",
sock, socktypename,
inet_ntoa(mreq.imr_multiaddr), "INADDR_ANY");
sock, socktypename, addrbuf, "INADDR_ANY");
}
}
}
@ -860,6 +880,14 @@ testsuite(int priv)
}
}
static void
usage()
{
fprintf(stderr, "usage: ipsockopt [-M ngroups] [-r] [-v]\n");
exit(EXIT_FAILURE);
}
/*
* Very simply exercise that we can get and set each option. If we're running
* as root, run it also as nobody. If not as root, complain about that.
@ -867,8 +895,26 @@ testsuite(int priv)
int
main(int argc, char *argv[])
{
int ch;
while ((ch = getopt(argc, argv, "M:rv")) != -1) {
switch (ch) {
case 'M':
nmcastgroups = atoi(optarg);
break;
case 'r':
dorandom = 1; /* introduce non-determinism */
break;
case 'v':
verbose = 1;
break;
default:
usage();
}
}
printf("1..1\n");
if (geteuid() != 0) {
warnx("Not running as root, can't run tests as root");
fprintf(stderr, "\n");