--- ethtool-3/ethtool.c.orig	2006-04-29 19:01:18.000000000 -0700
+++ ethtool-3/ethtool.c	2006-05-25 23:09:26.000000000 -0700
@@ -66,6 +66,7 @@
 static int do_goffload(int fd, struct ifreq *ifr);
 static int do_soffload(int fd, struct ifreq *ifr);
 static int do_gstats(int fd, struct ifreq *ifr);
+static int do_cstats(int fd, struct ifreq *ifr);
 static int send_ioctl(int fd, struct ifreq *ifr);
 static int check_for_pre24_kernel();
 
@@ -136,6 +137,7 @@
  *		[ sopass %x:%x:%x:%x:%x:%x ] \
  *		[ msglvl %d ]
  *	ethtool -S DEVNAME
+ *      ethtool -Z DEVNAME
  */
 
 static void show_usage(int badarg)
@@ -217,6 +219,7 @@
 		"		[ sopass %%x:%%x:%%x:%%x:%%x:%%x ] \\\n"
 		"		[ msglvl %%d ] \n"
 		"	ethtool -S DEVNAME\n"
+		"	ethtool -Z DEVNAME\n"
 	    );
 	}
 	exit(badarg);
@@ -242,6 +245,7 @@
 	MODE_GOFFLOAD,
 	MODE_SOFFLOAD,
 	MODE_GSTATS,
+	MODE_CSTATS,
 } mode = MODE_GSET;
 
 static int goffload_changed = 0;
@@ -470,6 +474,8 @@
 				mode = MODE_TEST;
 			else if (!strcmp(argp[i], "-S"))
 				mode = MODE_GSTATS;
+			else if (!strcmp(argp[i], "-Z"))
+				mode = MODE_CSTATS;
 			else if (!strcmp(argp[i], "-h"))
 				show_usage(0);
 			else
@@ -492,6 +498,7 @@
 			    (mode == MODE_GOFFLOAD) ||
 			    (mode == MODE_SOFFLOAD) ||
 			    (mode == MODE_GSTATS) ||
+			    (mode == MODE_CSTATS) ||
 			    (mode == MODE_PHYS_ID)) {
 				devname = argp[i];
 				break;
@@ -1266,6 +1273,8 @@
 		return do_soffload(fd, &ifr);
 	} else if (mode == MODE_GSTATS) {
 		return do_gstats(fd, &ifr);
+	} else if (mode == MODE_CSTATS) {
+		return do_cstats(fd, &ifr);
 	}
 
 	return 69;
@@ -2010,6 +2019,67 @@
 	return 0;
 }
 
+static int do_cstats(int fd, struct ifreq *ifr)
+{
+	struct ethtool_drvinfo drvinfo;
+	struct ethtool_gstrings *strings;
+	struct ethtool_stats *stats;
+	unsigned int n_stats, sz_str, sz_stats, i;
+	int err;
+
+	drvinfo.cmd = ETHTOOL_GDRVINFO;
+	ifr->ifr_data = (caddr_t)&drvinfo;
+	err = send_ioctl(fd, ifr);
+	if (err < 0) {
+		perror("Cannot get driver information");
+		return 71;
+	}
+
+	n_stats = drvinfo.n_stats;
+	if (n_stats < 1) {
+		fprintf(stderr, "no stats available\n");
+		return 94;
+	}
+
+	sz_str = n_stats * ETH_GSTRING_LEN;
+	sz_stats = n_stats * sizeof(u64);
+
+	strings = calloc(1, sz_str + sizeof(struct ethtool_gstrings));
+	stats = calloc(1, sz_stats + sizeof(struct ethtool_stats));
+	if (!strings || !stats) {
+		fprintf(stderr, "no memory available\n");
+		return 95;
+	}
+
+	strings->cmd = ETHTOOL_GSTRINGS;
+	strings->string_set = ETH_SS_STATS;
+	strings->len = n_stats;
+	ifr->ifr_data = (caddr_t) strings;
+	err = send_ioctl(fd, ifr);
+	if (err < 0) {
+		perror("Cannot get stats strings information");
+		free(strings);
+		free(stats);
+		return 96;
+	}
+
+	stats->cmd = ETHTOOL_CSTATS;
+	stats->n_stats = n_stats;
+	ifr->ifr_data = (caddr_t) stats;
+	err = send_ioctl(fd, ifr);
+	if (err < 0) {
+		perror("Cannot clear stats information");
+		free(strings);
+		free(stats);
+		return 97;
+	}
+
+	free(strings);
+	free(stats);
+
+	return 0;
+}
+
 static int send_ioctl(int fd, struct ifreq *ifr)
 {
 	int err;
--- ethtool-3/ethtool-copy.h.orig	2006-04-29 19:01:26.000000000 -0700
+++ ethtool-3/ethtool-copy.h	2006-04-29 19:03:09.000000000 -0700
@@ -283,6 +283,7 @@
 #define ETHTOOL_GSTATS		0x0000001d /* get NIC-specific statistics */
 #define ETHTOOL_GTSO		0x0000001e /* Get TSO enable (ethtool_value) */
 #define ETHTOOL_STSO		0x0000001f /* Set TSO enable (ethtool_value) */
+#define ETHTOOL_CSTATS		0x00000023 /* get NIC-specific statistics */
 
 /* compatibility with older code */
 #define SPARC_ETH_GSET		ETHTOOL_GSET
--- ethtool-3/ethtool.8.orig	2006-05-25 22:58:38.000000000 -0700
+++ ethtool-3/ethtool.8	2006-05-25 23:07:00.000000000 -0700
@@ -181,6 +181,9 @@
 .RB [ sopass \ \*(MA]
 .RB [ msglvl
 .IR N ]
+
+.B ethtool \-Z
+.I ethX
 .SH DESCRIPTION
 .BI ethtool
 is used for querying settings of an ethernet device and changing them.
@@ -364,6 +367,9 @@
 .TP
 .BI msglvl \ N
 Set the driver message level. Meanings differ per driver.
+.TP
+.B \-Z
+Clear the statistics on the specified ethernet device.
 .SH BUGS
 Not supported (in part or whole) on all ethernet drivers (read
 /usr/share/doc/ethtool/README.Debian to get an idea about supported features).