Add a two-way floodping test and a test which sends icmp echos with

various sizes.

tests/net/icmp/t_ping.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: t_ping.c,v 1.2 2010/08/17 15:51:11 pooka Exp $	*/
+/*	$NetBSD: t_ping.c,v 1.3 2010/08/18 16:39:22 pooka Exp $	*/
 
 /*-
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: t_ping.c,v 1.2 2010/08/17 15:51:11 pooka Exp $");
+__RCSID("$NetBSD: t_ping.c,v 1.3 2010/08/18 16:39:22 pooka Exp $");
 #endif /* not lint */
 
 #include <sys/types.h>
@@ -101,20 +101,92 @@ ATF_TC_HEAD(floodping, tc)
 	atf_tc_set_md_var(tc, "use.fs", "true");
 }
 
-#define PERLOOP 100
+/* why the hell isn't this available in userspace??? */
-#define LOOPS 100
+static uint16_t
-ATF_TC_BODY(floodping, tc)
+in_cksum(void *data, size_t len)
 {
-	char buf[8192];
+	uint16_t *buf = data;
-	char ifname[IFNAMSIZ];
+	unsigned sum;
-	pid_t cpid;
+
-	int loop, i, succ;
+	for (sum = 0; len > 1; len -= 2)
+		sum += *buf++;
+	if (len)
+		sum += *(uint8_t *)buf;
+
+	sum = (sum >> 16) + (sum & 0xffff);
+	sum += (sum >> 16);
+
+	return ~sum;
+}
+
+static int
+doping(const char *target, int loops, size_t pktsize)
+{
+	char sndbuf[IP_MAXPACKET - sizeof(struct ip)];
+	char recvbuf[IP_MAXPACKET];
 	struct sockaddr_in dst, pingee;
-	struct icmp icmp;
+	struct icmp *icmp;
 	socklen_t slen;
 	ssize_t n;
+	int loop, i, succ;
 	int x, xnon, s;
 
+	RL(s = rump_sys_socket(PF_INET, SOCK_RAW, IPPROTO_ICMP));
+	RL(x = rump_sys_fcntl(s, F_GETFL, 0));
+	xnon = x | O_NONBLOCK;
+
+	memset(&dst, 0, sizeof(dst));
+	dst.sin_len = sizeof(dst);
+	dst.sin_family = AF_INET;
+	dst.sin_addr.s_addr = inet_addr(target);
+
+	icmp = (struct icmp *)sndbuf;
+	memset(icmp, 0, sizeof(*icmp));
+	icmp->icmp_type = ICMP_ECHO;
+	icmp->icmp_id = htons(37);
+
+	if (pktsize < sizeof(*icmp))
+		pktsize = sizeof(*icmp);
+	if (pktsize > sizeof(sndbuf))
+		pktsize = sizeof(sndbuf);
+
+	RL(rump_sys_setsockopt(s, SOL_SOCKET, SO_SNDBUF,
+	    &pktsize, sizeof(pktsize)));
+	RL(rump_sys_setsockopt(s, SOL_SOCKET, SO_RCVBUF,
+	    &pktsize, sizeof(pktsize)));
+
+	slen = sizeof(pingee);
+	succ = 0;
+	for (loop = 0; loop < loops; loop++) {
+		RL(rump_sys_fcntl(s, F_SETFL, x));
+		icmp->icmp_seq = htons(loop);
+		icmp->icmp_cksum = 0;
+		icmp->icmp_cksum = in_cksum(icmp, pktsize);
+		RL(rump_sys_sendto(s, icmp, pktsize, 0,
+		    (struct sockaddr *)&dst, sizeof(dst)));
+
+		RL(rump_sys_fcntl(s, F_SETFL, xnon));
+		while ((n = rump_sys_recvfrom(s, recvbuf, sizeof(recvbuf), 0,
+		    (struct sockaddr *)&pingee, &slen)) > 0) {
+			succ++;
+		}
+		if (n == -1 && errno == EAGAIN)
+			continue;
+		atf_tc_fail_errno("recv failed");
+	}
+
+	rump_sys_close(s);
+	return succ;
+}
+
+#define LOOPS 10000
+
+ATF_TC_BODY(floodping, tc)
+{
+	char ifname[IFNAMSIZ];
+	pid_t cpid;
+	int succ;
+
 	cpid = fork();
 	rump_init();
 	netcfg_rump_makeshmif("thank-you-driver-for-getting-me-here", ifname);
@@ -132,40 +204,92 @@ ATF_TC_BODY(floodping, tc)
 
 	netcfg_rump_if(ifname, "1.1.1.20", "255.255.255.0");
 
-	RL(s = rump_sys_socket(PF_INET, SOCK_RAW, IPPROTO_ICMP));
+	succ = doping("1.1.1.10", LOOPS, 56);
-	RL(x = rump_sys_fcntl(s, F_GETFL, 0));
+	printf("got %d/%d\n", succ, LOOPS);
-	xnon = x | O_NONBLOCK;
 
-	memset(&dst, 0, sizeof(dst));
+	kill(cpid, SIGKILL);
-	dst.sin_len = sizeof(dst);
+}
-	dst.sin_family = AF_INET;
-	dst.sin_addr.s_addr = inet_addr("1.1.1.10");
 
-	memset(&icmp, 0, sizeof(icmp));
+ATF_TC(floodping2);
-	icmp.icmp_type = ICMP_ECHO;
+ATF_TC_HEAD(floodping2, tc)
-	icmp.icmp_id = htons(37);
+{
-	icmp.icmp_cksum = htons(0xf7da);
 
-	slen = sizeof(pingee);
+	atf_tc_set_md_var(tc, "descr", "two hosts floodpinging each other");
-	succ = 0;
+	atf_tc_set_md_var(tc, "use.fs", "true");
-	for (loop = 0; loop < LOOPS; loop++) {
+}
-		RL(rump_sys_fcntl(s, F_SETFL, x));
+
-		for (i = 0; i < PERLOOP; i++) {
+ATF_TC_BODY(floodping2, tc)
-			RL(rump_sys_sendto(s, &icmp, sizeof(icmp), 0,
+{
-			    (struct sockaddr *)&dst, sizeof(dst)));
+	char ifname[IFNAMSIZ];
-		}
+	pid_t cpid;
-		RL(rump_sys_fcntl(s, F_SETFL, xnon));
+	int succ;
-		while ((n = rump_sys_recvfrom(s, buf, sizeof(buf), 0,
+
-		    (struct sockaddr *)&pingee, &slen)) > 0) {
+	cpid = fork();
-			succ++;
+	rump_init();
-		}
+	netcfg_rump_makeshmif("floodping2", ifname);
-		if (n == -1 && errno == EAGAIN)
+
-			continue;
+	switch (cpid) {
-		atf_tc_fail_errno("recv failed");
+	case -1:
+		atf_tc_fail_errno("fork failed");
+	case 0:
+		netcfg_rump_if(ifname, "1.1.1.10", "255.255.255.0");
+		succ = doping("1.1.1.20", LOOPS, 56);
+		break;
+	default:
+		netcfg_rump_if(ifname, "1.1.1.20", "255.255.255.0");
+		succ = doping("1.1.1.10", LOOPS, 56);
+		break;
 	}
 
-	printf("got %d/%d\n", succ, LOOPS * PERLOOP);
+	printf("got %d/%d\n", succ, LOOPS);
+}
 
+ATF_TC(pingsize);
+ATF_TC_HEAD(pingsize, tc)
+{
+
+	atf_tc_set_md_var(tc, "descr", "ping with packets min <= size <= max");
+	atf_tc_set_md_var(tc, "use.fs", "true");
+}
+
+ATF_TC_BODY(pingsize, tc)
+{
+	char ifname[IFNAMSIZ];
+	pid_t cpid;
+	int succ, i;
+
+	cpid = fork();
+	rump_init();
+	netcfg_rump_makeshmif("jippikaiee", ifname);
+
+	switch (cpid) {
+	case -1:
+		atf_tc_fail_errno("fork failed");
+	case 0:
+		netcfg_rump_if(ifname, "1.1.1.10", "255.255.255.0");
+		pause();
+		break;
+	default:
+		break;
+	}
+
+	netcfg_rump_if(ifname, "1.1.1.20", "255.255.255.0");
+
+	succ = 0;
+
+	/* small sizes */
+	for (i = IP_MAXPACKET - 60000; i > 0; i--)
+		succ += doping("1.1.1.10", 1, i);
+
+	/* medium sizes */
+	for (i = IP_MAXPACKET - 100; i > IP_MAXPACKET - 60000; i -= 1000)
+		succ += doping("1.1.1.10", 1, i);
+
+	/* big sizes */
+	for (i = IP_MAXPACKET; i > IP_MAXPACKET - 100; i -= 10)
+		succ += doping("1.1.1.10", 1, i);
+
+	printf("got %d/%d\n", succ, IP_MAXPACKET);
 	kill(cpid, SIGKILL);
 }
 
@@ -174,6 +298,8 @@ ATF_TP_ADD_TCS(tp)
 
 	ATF_TP_ADD_TC(tp, simpleping);
 	ATF_TP_ADD_TC(tp, floodping);
+	ATF_TP_ADD_TC(tp, floodping2);
+	ATF_TP_ADD_TC(tp, pingsize);
 
 	return atf_no_error();
 }