/*
- * $Id$
- */
-
-/*
* cangw.c - manage PF_CAN netlink gateway
*
* Copyright (c) 2010 Volkswagen Group Electronic Research
{
struct can_filter *filter = (struct can_filter *)data;
- printf("-f %03X:%X ", filter->can_id, filter->can_mask);
+ if (filter->can_id & CAN_INV_FILTER)
+ printf("-f %03X~%X ", (filter->can_id & ~CAN_INV_FILTER), filter->can_mask);
+ else
+ printf("-f %03X:%X ", filter->can_id, filter->can_mask);
}
void printmod(const char *type, const void *data)
fprintf(stderr, " -d <dst_dev> (destination netdevice)\n");
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, " -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");
fprintf(stderr, " -x <from_idx>:<to_idx>:<result_idx>:<init_xor_val> (XOR checksum)\n");
struct nlmsghdr *nlh;
unsigned int src_ifindex = 0;
unsigned int dst_ifindex = 0;
- __u32 handled, dropped;
+ __u32 handled, dropped, deleted;
int rtlen;
handled = 0;
dropped = 0;
+ deleted = 0;
src_ifindex = 0;
dst_ifindex = 0;
case CGW_MOD_OR:
case CGW_MOD_XOR:
case CGW_MOD_SET:
+ case CGW_LIM_HOPS:
case CGW_CS_XOR:
case CGW_CS_CRC8:
break;
dropped = *(__u32 *)RTA_DATA(rta);
break;
+ case CGW_DELETED:
+ deleted = *(__u32 *)RTA_DATA(rta);
+ break;
+
default:
printf("Unknown attribute %d!", rta->rta_type);
return -EINVAL;
if (rtc->flags & CGW_FLAGS_CAN_SRC_TSTAMP)
printf("-t ");
+ if (rtc->flags & CGW_FLAGS_CAN_IIF_TX_OK)
+ printf("-i ");
+
/* second parse for mod attributes */
rta = (struct rtattr *) RTCAN_RTA(rtc);
rtlen = RTCAN_PAYLOAD(nlh);
printmod("SET", RTA_DATA(rta));
break;
+ case CGW_LIM_HOPS:
+ printf("-l %d ", *(__u8 *)RTA_DATA(rta));
+ break;
+
case CGW_CS_XOR:
print_cs_xor((struct cgw_csum_xor *)RTA_DATA(rta));
break;
case CGW_DST_IF:
case CGW_HANDLED:
case CGW_DROPPED:
+ case CGW_DELETED:
break;
default:
}
}
- printf("# %d handled %d dropped\n", handled, dropped); /* end of entry */
+ /* end of entry */
+ printf("# %d handled %d dropped %d deleted\n",
+ handled, dropped, deleted);
/* jump to next NLMSG in the given buffer */
nlh = NLMSG_NEXT(nlh, len);
struct nlmsgerr *rte;
unsigned int src_ifindex = 0;
unsigned int dst_ifindex = 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:tef:c:p:x:m:?")) != -1) {
+ while ((opt = getopt(argc, argv, "ADFLs:d:teil:f:c:p:x:m:?")) != -1) {
switch (opt) {
case 'A':
flags |= CGW_FLAGS_CAN_ECHO;
break;
+ case 'i':
+ flags |= CGW_FLAGS_CAN_IIF_TX_OK;
+ break;
+
+ case 'l':
+ if (sscanf(optarg, "%hhd", &limit_hops) != 1 || !(limit_hops)) {
+ printf("Bad hop limit definition '%s'.\n", optarg);
+ exit(1);
+ }
+ break;
+
case 'f':
if (sscanf(optarg, "%x:%x", &filter.can_id,
&filter.can_mask) == 2) {
exit(1);
}
+ if (!modidx && (have_cs_crc8 || have_cs_xor)) {
+ printf("-c or -x can only be used in conjunction with -m\n");
+ exit(1);
+ }
+
s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
switch (cmd) {
if (have_cs_xor)
addattr_l(&req.nh, sizeof(req), CGW_CS_XOR, &cs_xor, sizeof(cs_xor));
+ if (limit_hops)
+ addattr_l(&req.nh, sizeof(req), CGW_LIM_HOPS, &limit_hops, sizeof(__u8));
+
/*
* a better example code
* modmsg.modtype = CGW_MOD_ID;