Whistle's Netgraph link-layer (sometimes more) networking infrastructure.

Been in production for 3 years now. Gives Instant Frame relay to if_sr
and if_ar drivers, and PPPOE support soon. See:
ftp://ftp.whistle.com/pub/archie/netgraph/index.html
for on-line manual pages.

Reviewed by: Doug Rabson (dfr@freebsd.org)
Obtained from:  Whistle CVS tree

1 files changed, 188 insertions, 0 deletions

diff --git a/usr.bin/netstat/netgraph.c b/usr.bin/netstat/netgraph.c
new file mode 100644
index 0000000..33bc779
--- /dev/null
+++ b/usr.bin/netstat/netgraph.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef lint
+static const char rcsid[] =
+	"$Id: atalk.c,v 1.11 1998/07/06 21:01:22 bde Exp $";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/protosw.h>
+#include <sys/linker.h>
+
+#include <net/route.h>
+
+#include <netgraph/ng_message.h>
+#include <netgraph/ng_socket.h>
+#include <netgraph/ng_socketvar.h>
+
+#include <nlist.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <netgraph.h>
+#include <err.h>
+#include "netstat.h"
+
+static	int first = 1;
+static	int csock = -1;
+
+void
+netgraphprotopr(u_long off, char *name)
+{
+	struct ngpcb *this, *next;
+	struct ngpcb ngpcb;
+	struct ngsock info;
+	struct socket sockb;
+	int debug = 1;
+
+	/* If symbol not found, try looking in the KLD module */
+	if (off == 0) {
+		const char *const modname = "ng_socket.ko";
+/* XXX We should get "mpath" from "sysctl kern.module_path" */
+		const char *mpath[] = { "/", "/boot/", "/modules/", NULL };
+		struct nlist sym[] = { { "_ngsocklist" }, { NULL } };
+		const char **pre;
+		struct kld_file_stat ks;
+		int fileid;
+
+		/* See if module is loaded */
+		if ((fileid = kldfind(modname)) < 0) {
+			if (debug)
+				warn("kldfind(%s)", modname);
+			return;
+		}
+
+		/* Get module info */
+		memset(&ks, 0, sizeof(ks));
+		ks.version = sizeof(struct kld_file_stat);
+		if (kldstat(fileid, &ks) < 0) {
+			if (debug)
+				warn("kldstat(%d)", fileid);
+			return;
+		}
+
+		/* Get symbol table from module file */
+		for (pre = mpath; *pre; pre++) {
+			char path[MAXPATHLEN];
+
+			snprintf(path, sizeof(path), "%s%s", *pre, modname);
+			if (nlist(path, sym) == 0)
+				break;
+		}
+
+		/* Did we find it? */
+		if (sym[0].n_value == 0) {
+			if (debug)
+				warnx("%s not found", modname);
+			return;
+		}
+
+		/* Symbol found at load address plus symbol offset */
+		off = (u_long) ks.address + sym[0].n_value;
+	}
+
+	/* Get pointer to first socket */
+	kread(off, (char *)&this, sizeof(this));
+
+	/* Get my own socket node */
+	if (csock == -1)
+		NgMkSockNode(NULL, &csock, NULL);
+
+	for (; this != NULL; this = next) {
+		u_char rbuf[sizeof(struct ng_mesg) + sizeof(struct nodeinfo)];
+		struct ng_mesg *resp = (struct ng_mesg *) rbuf;
+		struct nodeinfo *ni = (struct nodeinfo *) resp->data;
+		char path[64];
+
+		/* Read in ngpcb structure */
+		kread((u_long)this, (char *)&ngpcb, sizeof(ngpcb));
+		next = ngpcb.socks.le_next;
+
+		/* Read in socket structure */
+		kread((u_long)ngpcb.ng_socket, (char *)&sockb, sizeof(sockb));
+
+		/* Check type of socket */
+		if (strcmp(name, "ctrl") == 0 && ngpcb.type != NG_CONTROL)
+			continue;
+		if (strcmp(name, "data") == 0 && ngpcb.type != NG_DATA)
+			continue;
+
+		/* Do headline */
+		if (first) {
+			printf("Netgraph sockets\n");
+			if (Aflag)
+				printf("%-8.8s ", "PCB");
+			printf("%-5.5s %-6.6s %-6.6s %-14.14s %s\n",
+			    "Type", "Recv-Q", "Send-Q",
+			    "Node Address", "#Hooks");
+			first = 0;
+		}
+
+		/* Show socket */
+		if (Aflag)
+			printf("%8lx ", (u_long) this);
+		printf("%-5.5s %6lu %6lu ",
+		    name, sockb.so_rcv.sb_cc, sockb.so_snd.sb_cc);
+
+		/* Get ngsock structure */
+		if (ngpcb.sockdata == 0)	/* unconnected data socket */
+			goto finish;
+		kread((u_long)ngpcb.sockdata, (char *)&info, sizeof(info));
+
+		/* Get info on associated node */
+		if (info.node == 0 || csock == -1)
+			goto finish;
+		snprintf(path, sizeof(path), "[%lx]:", (u_long) info.node);
+		if (NgSendMsg(csock, path,
+		    NGM_GENERIC_COOKIE, NGM_NODEINFO, NULL, 0) < 0)
+			goto finish;
+		if (NgRecvMsg(csock, resp, sizeof(rbuf), NULL) < 0)
+			goto finish;
+
+		/* Display associated node info */
+		if (*ni->name != '\0')
+			snprintf(path, sizeof(path), "%s:", ni->name);
+		printf("%-14.14s %4d", path, ni->hooks);
+finish:
+		putchar('\n');
+	}
+}
+