Add spxabort, a simple netipx/spx regression test that triggers

pru_abort() by closing a listen socket while completed connections are
presenting in its listen queue.  Unfortunately, it's difficult to
trigger the other two pru_abort() cases using user APIs, so they are
not covered by this test.

tools/regression/netipx/spxabort/Makefile

@@ -0,0 +1,12 @@
+#
+# $FreeBSD$
+#
+
+PROG=	spxabort
+NO_MAN=
+
+DPADD=	${LIBIPX};
+LDADD=	-lipx
+WARNS=	3
+
+.include <bsd.prog.mk>

tools/regression/netipx/spxabort/spxabort.c

@@ -0,0 +1,96 @@
+/*-
+ * Copyright (c) 2006 Robert N. M. Watson
+ * 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Exercise the pru_abort() code for SPX by opening an SPX connection to a
+ * listen socket, then closing the listen socket before accepting.
+ *
+ * We would also like to be able to test the other two abort cases, in which
+ * incomplete connections are aborted due to overflow, and due to close of
+ * the listen socket, but that requires a packet level test rather than using
+ * the socket API.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <netipx/ipx.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#define	IPX_ENDPOINT	"0xbebe.1.0x8a13"
+
+int
+main(int argc, char *argv[])
+{
+	struct sockaddr_ipx sipx;
+	int sock_listen, sock;
+
+	sock_listen = socket(PF_IPX, SOCK_STREAM, 0);
+	if (sock_listen < 0)
+		err(-1, "sock_listen = socket(PF_IPX, SOCK_STREAM, 0)");
+
+	bzero(&sipx, sizeof(sipx));
+	sipx.sipx_len = sizeof(sipx);
+	sipx.sipx_family = AF_IPX;
+	sipx.sipx_addr = ipx_addr(IPX_ENDPOINT);
+
+	if (bind(sock_listen, (struct sockaddr *)&sipx, sizeof(sipx)) < 0)
+		err(-1, "bind(sock_listen)");
+
+	if (listen(sock_listen, -1) < 0)
+		err(-1, "listen(sock_listen)");
+
+	sock = socket(PF_IPX, SOCK_STREAM, 0);
+	if (sock < 0)
+		err(-1, "sock = socket(PF_IPX, SOCK_STREAM, 0)");
+
+	bzero(&sipx, sizeof(sipx));
+	sipx.sipx_len = sizeof(sipx);
+	sipx.sipx_family = AF_IPX;
+	sipx.sipx_addr = ipx_addr(IPX_ENDPOINT);
+
+	if (fcntl(sock, F_SETFL, O_NONBLOCK) < 0)
+		err(-1, "fcntl(sock, F_SETFL, O_NONBLOCKING)");
+
+	if (connect(sock, (struct sockaddr *)&sipx, sizeof(sipx)) < 0) {
+		if (errno != EINPROGRESS)
+			err(-1, "sock = socket(PF_IPX, SOCK_STREAM, 0)");
+	}
+
+	sleep(1);	/* Arbitrary. */
+
+	close(sock_listen);
+
+	return (0);
+};