test: add static tests for ICMP socket

Add ZDTM static tests for IP4/ICMP and IP6/ICMP
socket feature.

Signed-off-by: समीर सिंह Sameer Singh <lumarzeli30@gmail.com>
Signed-off-by: Andrei Vagin <avagin@google.com>

test/zdtm/static/Makefile

@@ -37,6 +37,8 @@ TST_NOFILE	:=				\
 		socket_udp-corked		\
 		socket6_udp			\
 		socket_udp_shutdown		\
+		socket_icmp			\
+		socket6_icmp			\
 		sk-freebind			\
 		sk-freebind-false		\
 		socket_udplite			\
@@ -630,6 +632,7 @@ socket-tcp6-closed:	CFLAGS += -D ZDTM_IPV6
 socket-tcp6-closed:	CFLAGS += -D ZDTM_IPV4V6
 socket-tcp-closed-last-ack:	CFLAGS += -D ZDTM_TCP_LAST_ACK
 socket-tcp-skip-in-flight:	CFLAGS += -D ZDTM_IPV4V6
+socket6-icmp:		CFLAGS += -DZDTM_IPV6
 sock_ip_opts01:		CFLAGS += -DZDTM_VAL_ZERO
 sock_tcp_opts01:	CFLAGS += -DZDTM_VAL_ZERO
 tun_ns:			CFLAGS += -DTUN_NS

test/zdtm/static/socket6_icmp.c

@@ -0,0 +1 @@
+socket_icmp.c

test/zdtm/static/socket_icmp.c

@@ -0,0 +1,128 @@
+#include "zdtmtst.h"
+
+const char *test_doc = "static test for ICMP socket\n";
+const char *test_author = "समीर सिंह Sameer Singh <lumarzeli30@gmail.com>\n";
+
+/* Description:
+ * Send a ping to localhost using ICMP socket
+ */
+
+#include <string.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#if defined(ZDTM_IPV6)
+#include <netinet/icmp6.h>
+#else
+#include <netinet/ip_icmp.h>
+#endif
+#include <arpa/inet.h>
+#include <sys/time.h>
+#include <netdb.h>
+
+#include "sysctl.h"
+
+#define PACKET_SIZE  64
+#define RECV_TIMEOUT 1
+
+static int echo_id = 1234;
+
+#if defined(ZDTM_IPV6)
+#define TEST_ICMP_ECHOREPLY ICMP6_ECHOREPLY
+#else
+#define TEST_ICMP_ECHOREPLY ICMP_ECHOREPLY
+#endif
+int main(int argc, char **argv)
+{
+	int ret, sock, seq = 0;
+	char packet[PACKET_SIZE], recv_packet[PACKET_SIZE];
+
+	struct timeval tv;
+#if defined(ZDTM_IPV6)
+	struct sockaddr_in6 addr, recv_addr;
+#else
+	struct icmphdr icmp_header, *icmp_reply;
+#endif
+	struct sockaddr_in addr, recv_addr;
+	socklen_t addr_len;
+
+	// Allow GIDs 0-58468 to open an unprivileged ICMP socket
+	if (sysctl_write_str("/proc/sys/net/ipv4/ping_group_range", "0 58468"))
+		return -1;
+
+	test_init(argc, argv);
+
+#if defined(ZDTM_IPV6)
+	sock = socket(PF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6);
+#else
+	sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_ICMP);
+#endif
+	if (sock < 0) {
+		pr_perror("Can't create socket");
+		return 1;
+	}
+
+	tv.tv_sec = RECV_TIMEOUT;
+	tv.tv_usec = 0;
+	if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
+		pr_perror("Can't set socket option");
+		return 1;
+	}
+
+	memset(&addr, 0, sizeof(addr));
+	memset(&icmp_header, 0, sizeof(icmp_header));
+#if defined(ZDTM_IPV6)
+	addr.sin6_family = AF_INET6;
+	inet_pton(AF_INET6, "::1", &addr.sin6_addr);
+
+	icmp_header.icmp6_type = ICMP6_ECHO_REQUEST;
+	icmp_header.icmp6_code = 0;
+	icmp_header.icmp6_id = echo_id;
+	icmp_header.icmp6_seq = seq;
+#else
+	addr.sin_family = AF_INET;
+	addr.sin_addr.s_addr = inet_addr("127.0.0.1");
+
+	icmp_header.type = ICMP_ECHO;
+	icmp_header.code = 0;
+	icmp_header.un.echo.id = echo_id;
+	icmp_header.un.echo.sequence = seq;
+#endif
+
+	memcpy(packet, &icmp_header, sizeof(icmp_header));
+	memset(packet + sizeof(icmp_header), 0xa5,
+	       PACKET_SIZE - sizeof(icmp_header));
+
+	test_daemon();
+	test_waitsig();
+
+	ret = sendto(sock, packet, PACKET_SIZE, 0,
+		     (struct sockaddr *)&addr, sizeof(addr));
+
+	if (ret < 0) {
+		fail("Can't send");
+		return 1;
+	}
+
+	addr_len = sizeof(recv_addr);
+
+	ret = recvfrom(sock, recv_packet, sizeof(recv_packet), 0,
+		       (struct sockaddr *)&recv_addr, &addr_len);
+
+	if (ret < 0) {
+		fail("Can't recv");
+		return 1;
+	}
+
+	icmp_reply = (struct icmphdr *)recv_packet;
+
+	if (icmp_reply->type != ICMP_ECHOREPLY) {
+		fail("Got no ICMP_ECHO_REPLY");
+		return 1;
+	}
+
+	close(sock);
+
+	pass();
+	return 0;
+}