4 files changed, 153 insertions, 10 deletions
diff --git a/Documentation/networking/timestamping/.gitignore b/Documentation/networking/timestamping/.gitignore
index 71e81eb2e22..a380159765c 100644
--- a/Documentation/networking/timestamping/.gitignore
+++ b/Documentation/networking/timestamping/.gitignore
@@ -1 +1,2 @@
 timestamping
+hwtstamp_config
diff --git a/Documentation/networking/timestamping/Makefile b/Documentation/networking/timestamping/Makefile
index 2a1489fdc03..d934afc8306 100644
--- a/Documentation/networking/timestamping/Makefile
+++ b/Documentation/networking/timestamping/Makefile
@@ -1,6 +1,14 @@
-CPPFLAGS = -I../../../include
+# kbuild trick to avoid linker error. Can be omitted if a module is built.
+obj- := dummy.o
 
-timestamping: timestamping.c
+# List of programs to build
+hostprogs-y := timestamping hwtstamp_config
+
+# Tell kbuild to always build the programs
+always := $(hostprogs-y)
+
+HOSTCFLAGS_timestamping.o += -I$(objtree)/usr/include
+HOSTCFLAGS_hwtstamp_config.o += -I$(objtree)/usr/include
 
 clean:
-	rm -f timestamping
+	rm -f timestamping hwtstamp_config
diff --git a/Documentation/networking/timestamping/hwtstamp_config.c b/Documentation/networking/timestamping/hwtstamp_config.c
new file mode 100644
index 00000000000..e8b685a7f15
--- /dev/null
+++ b/Documentation/networking/timestamping/hwtstamp_config.c
@@ -0,0 +1,134 @@
+/* Test program for SIOC{G,S}HWTSTAMP
+ * Copyright 2013 Solarflare Communications
+ * Author: Ben Hutchings
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+
+#include <linux/if.h>
+#include <linux/net_tstamp.h>
+#include <linux/sockios.h>
+
+static int
+lookup_value(const char **names, int size, const char *name)
+{
+	int value;
+
+	for (value = 0; value < size; value++)
+		if (names[value] && strcasecmp(names[value], name) == 0)
+			return value;
+
+	return -1;
+}
+
+static const char *
+lookup_name(const char **names, int size, int value)
+{
+	return (value >= 0 && value < size) ? names[value] : NULL;
+}
+
+static void list_names(FILE *f, const char **names, int size)
+{
+	int value;
+
+	for (value = 0; value < size; value++)
+		if (names[value])
+			fprintf(f, "    %s\n", names[value]);
+}
+
+static const char *tx_types[] = {
+#define TX_TYPE(name) [HWTSTAMP_TX_ ## name] = #name
+	TX_TYPE(OFF),
+	TX_TYPE(ON),
+	TX_TYPE(ONESTEP_SYNC)
+#undef TX_TYPE
+};
+#define N_TX_TYPES ((int)(sizeof(tx_types) / sizeof(tx_types[0])))
+
+static const char *rx_filters[] = {
+#define RX_FILTER(name) [HWTSTAMP_FILTER_ ## name] = #name
+	RX_FILTER(NONE),
+	RX_FILTER(ALL),
+	RX_FILTER(SOME),
+	RX_FILTER(PTP_V1_L4_EVENT),
+	RX_FILTER(PTP_V1_L4_SYNC),
+	RX_FILTER(PTP_V1_L4_DELAY_REQ),
+	RX_FILTER(PTP_V2_L4_EVENT),
+	RX_FILTER(PTP_V2_L4_SYNC),
+	RX_FILTER(PTP_V2_L4_DELAY_REQ),
+	RX_FILTER(PTP_V2_L2_EVENT),
+	RX_FILTER(PTP_V2_L2_SYNC),
+	RX_FILTER(PTP_V2_L2_DELAY_REQ),
+	RX_FILTER(PTP_V2_EVENT),
+	RX_FILTER(PTP_V2_SYNC),
+	RX_FILTER(PTP_V2_DELAY_REQ),
+#undef RX_FILTER
+};
+#define N_RX_FILTERS ((int)(sizeof(rx_filters) / sizeof(rx_filters[0])))
+
+static void usage(void)
+{
+	fputs("Usage: hwtstamp_config if_name [tx_type rx_filter]\n"
+	      "tx_type is any of (case-insensitive):\n",
+	      stderr);
+	list_names(stderr, tx_types, N_TX_TYPES);
+	fputs("rx_filter is any of (case-insensitive):\n", stderr);
+	list_names(stderr, rx_filters, N_RX_FILTERS);
+}
+
+int main(int argc, char **argv)
+{
+	struct ifreq ifr;
+	struct hwtstamp_config config;
+	const char *name;
+	int sock;
+
+	if ((argc != 2 && argc != 4) || (strlen(argv[1]) >= IFNAMSIZ)) {
+		usage();
+		return 2;
+	}
+
+	if (argc == 4) {
+		config.flags = 0;
+		config.tx_type = lookup_value(tx_types, N_TX_TYPES, argv[2]);
+		config.rx_filter = lookup_value(rx_filters, N_RX_FILTERS, argv[3]);
+		if (config.tx_type < 0 || config.rx_filter < 0) {
+			usage();
+			return 2;
+		}
+	}
+
+	sock = socket(AF_INET, SOCK_DGRAM, 0);
+	if (sock < 0) {
+		perror("socket");
+		return 1;
+	}
+
+	strcpy(ifr.ifr_name, argv[1]);
+	ifr.ifr_data = (caddr_t)&config;
+
+	if (ioctl(sock, (argc == 2) ? SIOCGHWTSTAMP : SIOCSHWTSTAMP, &ifr)) {
+		perror("ioctl");
+		return 1;
+	}
+
+	printf("flags = %#x\n", config.flags);
+	name = lookup_name(tx_types, N_TX_TYPES, config.tx_type);
+	if (name)
+		printf("tx_type = %s\n", name);
+	else
+		printf("tx_type = %d\n", config.tx_type);
+	name = lookup_name(rx_filters, N_RX_FILTERS, config.rx_filter);
+	if (name)
+		printf("rx_filter = %s\n", name);
+	else
+		printf("rx_filter = %d\n", config.rx_filter);
+
+	return 0;
+}
diff --git a/Documentation/networking/timestamping/timestamping.c b/Documentation/networking/timestamping/timestamping.c
index 43d14310421..8ba82bfe6a3 100644
--- a/Documentation/networking/timestamping/timestamping.c
+++ b/Documentation/networking/timestamping/timestamping.c
@@ -41,9 +41,9 @@
 #include <arpa/inet.h>
 #include <net/if.h>
 
-#include "asm/types.h"
-#include "linux/net_tstamp.h"
-#include "linux/errqueue.h"
+#include <asm/types.h>
+#include <linux/net_tstamp.h>
+#include <linux/errqueue.h>
 
 #ifndef SO_TIMESTAMPING
 # define SO_TIMESTAMPING         37
@@ -164,7 +164,7 @@ static void printpacket(struct msghdr *msg, int res,
 
 	gettimeofday(&now, 0);
 
-	printf("%ld.%06ld: received %s data, %d bytes from %s, %d bytes control messages\n",
+	printf("%ld.%06ld: received %s data, %d bytes from %s, %zu bytes control messages\n",
 	       (long)now.tv_sec, (long)now.tv_usec,
 	       (recvmsg_flags & MSG_ERRQUEUE) ? "error" : "regular",
 	       res,
@@ -173,7 +173,7 @@ static void printpacket(struct msghdr *msg, int res,
 	for (cmsg = CMSG_FIRSTHDR(msg);
 	     cmsg;
 	     cmsg = CMSG_NXTHDR(msg, cmsg)) {
-		printf("   cmsg len %d: ", cmsg->cmsg_len);
+		printf("   cmsg len %zu: ", cmsg->cmsg_len);
 		switch (cmsg->cmsg_level) {
 		case SOL_SOCKET:
 			printf("SOL_SOCKET ");
@@ -370,7 +370,7 @@ int main(int argc, char **argv)
 	}
 
 	sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
-	if (socket < 0)
+	if (sock < 0)
 		bail("socket");
 
 	memset(&device, 0, sizeof(device));
@@ -381,7 +381,7 @@ int main(int argc, char **argv)
 	memset(&hwtstamp, 0, sizeof(hwtstamp));
 	strncpy(hwtstamp.ifr_name, interface, sizeof(hwtstamp.ifr_name));
 	hwtstamp.ifr_data = (void *)&hwconfig;
-	memset(&hwconfig, 0, sizeof(&hwconfig));
+	memset(&hwconfig, 0, sizeof(hwconfig));
 	hwconfig.tx_type =
 		(so_timestamping_flags & SOF_TIMESTAMPING_TX_HARDWARE) ?
 		HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;