fprintf(stderr, "Options: -t (preserve src_dev rx timestamp)\n");
fprintf(stderr, " -e (echo sent frames - recommended on vcanx)\n");
fprintf(stderr, " -i (allow to route to incoming interface)\n");
+ fprintf(stderr, " -u <uid> (user defined modification identifier)\n");
fprintf(stderr, " -l <hops> (limit the number of frame hops / routings)\n");
fprintf(stderr, " -f <filter> (set CAN filter)\n");
fprintf(stderr, " -m <mod> (set frame modifications)\n");
case CGW_MOD_OR:
case CGW_MOD_XOR:
case CGW_MOD_SET:
+ case CGW_MOD_UID:
case CGW_LIM_HOPS:
case CGW_CS_XOR:
case CGW_CS_CRC8:
printmod("SET", RTA_DATA(rta));
break;
+ case CGW_MOD_UID:
+ printf("-u %X ", *(__u32 *)RTA_DATA(rta));
+ break;
+
case CGW_LIM_HOPS:
printf("-l %d ", *(__u8 *)RTA_DATA(rta));
break;
struct nlmsgerr *rte;
unsigned int src_ifindex = 0;
unsigned int dst_ifindex = 0;
+ __u32 uid = 0;
__u8 limit_hops = 0;
__u16 flags = 0;
int len;
memset(&cs_xor, 0, sizeof(cs_xor));
memset(&cs_crc8, 0, sizeof(cs_crc8));
- while ((opt = getopt(argc, argv, "ADFLs:d:teil:f:c:p:x:m:?")) != -1) {
+ while ((opt = getopt(argc, argv, "ADFLs:d:teiu:l:f:c:p:x:m:?")) != -1) {
switch (opt) {
case 'A':
flags |= CGW_FLAGS_CAN_IIF_TX_OK;
break;
+ case 'u':
+ uid = strtoul(optarg, (char **)NULL, 16);
+ break;
+
case 'l':
if (sscanf(optarg, "%hhd", &limit_hops) != 1 || !(limit_hops)) {
printf("Bad hop limit definition '%s'.\n", optarg);
if (have_cs_xor)
addattr_l(&req.nh, sizeof(req), CGW_CS_XOR, &cs_xor, sizeof(cs_xor));
+ if (uid)
+ addattr_l(&req.nh, sizeof(req), CGW_MOD_UID, &uid, sizeof(__u32));
+
if (limit_hops)
addattr_l(&req.nh, sizeof(req), CGW_LIM_HOPS, &limit_hops, sizeof(__u8));
CGW_FILTER, /* specify struct can_filter on source CAN device */
CGW_DELETED, /* number of deleted CAN frames (see max_hops param) */
CGW_LIM_HOPS, /* limit the number of hops of this specific rule */
+ CGW_MOD_UID, /* user defined identifier for modification updates */
__CGW_MAX
};
* load time of the can-gw module). This value is used to reduce the number of
* possible hops for this gateway rule to a value smaller then max_hops.
*
+ * CGW_MOD_UID (length 4 bytes):
+ * Optional non-zero user defined routing job identifier to alter existing
+ * modification settings at runtime.
+ *
* CGW_CS_XOR (length 4 bytes):
* Set a simple XOR checksum starting with an initial value into
* data[result-idx] using data[start-idx] .. data[end-idx]