From: Oliver Hartkopp <socketcan@hartkopp.net>
Date: Thu, 10 Jul 2008 10:59:37 +0000 (+0000)
Subject: Added -f option to filter only on the CAN-ID and not on the content.
X-Git-Tag: 0.1~177
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f33075946d9eddd6b4f329c4aaaab078821d96bf;p=profile%2Fivi%2Fcan-utils.git

Added -f option to filter only on the CAN-ID and not on the content.
This can be useful when the timestamp cyle needs to be displayed.
---

diff --git a/cansniffer.c b/cansniffer.c
index c2b5930..bedaf5c 100644
--- a/cansniffer.c
+++ b/cansniffer.c
@@ -118,13 +118,14 @@ extern int optind, opterr, optopt;
 
 static int running = 1;
 static int clearscreen = 1;
-static int notch = 0;
+static int notch;
+static int filter_id_only;
 static long timeout = TIMEOUT;
 static long hold = HOLD;
 static long loop = LOOP;
-static unsigned char binary = 0;
-static unsigned char binary_gap = 0;
-static unsigned char color  = 0;
+static unsigned char binary;
+static unsigned char binary_gap;
+static unsigned char color;
 
 void rx_setup (int fd, int id);
 void rx_delete (int fd, int id);
@@ -195,7 +196,6 @@ int main(int argc, char **argv)
 	long currcms = 0;
 	long lastcms = 0;
 	unsigned char quiet = 0;
-
 	int opt, ret;
 	struct timeval timeo, start_tv, tv;
 	struct sockaddr_can addr;
@@ -210,7 +210,7 @@ int main(int argc, char **argv)
 	for (i=0; i < 2048 ;i++) /* default: check all CAN-IDs */
 		do_set(i, ENABLE);
 
-	while ((opt = getopt(argc, argv, "m:v:r:t:h:l:qbBc")) != -1) {
+	while ((opt = getopt(argc, argv, "m:v:r:t:h:l:qbBcf")) != -1) {
 		switch (opt) {
 		case 'm':
 			sscanf(optarg, "%x", &mask);
@@ -254,6 +254,10 @@ int main(int argc, char **argv)
 			color = 1;
 			break;
 
+		case 'f':
+			filter_id_only = 1;
+			break;
+
 		case '?':
 			break;
 
@@ -371,6 +375,9 @@ void rx_setup (int fd, int id){
 	txmsg.msg_head.nframes = 1;
 	U64_DATA(&txmsg.frame) = (__u64) 0xFFFFFFFFFFFFFFFFULL;
 
+	if (filter_id_only)
+		txmsg.msg_head.flags |= RX_FILTER_ID;
+
 	if (write(fd, &txmsg, sizeof(txmsg)) < 0)
 		perror("write");
 };