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can-utils
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Merge pull request #504 from hartkopp/master 

can-utils: support CAN XL

This patch set adds support for CAN XL including VCIDs (Linux v6.9+)

Tools that completely support CAN XL:

    candump
    cangen
    canlogserver
    canplayer
    cansend
    log2long

CC/FD-only tools that have been adapted to the lib.[ch] changes:

    log2asc
    asc2log

Main changes:

    lib/cangen: add documentation for CAN XL ASCII representation
    lib: remove separate maxdlen parameter as every needed info is part of the CAN frame now
    lib: remove fprint functions and only support sprint
    lib: rework for static single buffer to contain a complete ASCII CAN XL frame
    lib: introduce a CAN frame unit type to contain CAN CC/FD/XL frames in one union
    canplayer/log2asc/log2long: make sscanf() buffer length aware
    cangen: fix views for some features for long CAN frame output
    general cleanups and buffer overflow safety measures
pull/506/head
Oliver Hartkopp 2024-03-13 22:03:02 +01:00 committed by GitHub
parent 64dc0b2169 dd16f2603b
commit 6d47f5c22b
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
13 changed files with 960 additions and 425 deletions
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46
asc2log.c
View File

@ -62,7 +62,7 @@
extern int optind, opterr, optopt;
void print_usage(char *prg)
static void print_usage(char *prg)
{
fprintf(stderr, "%s - convert ASC logfile to compact CAN frame logfile.\n", prg);
fprintf(stderr, "Usage: %s\n", prg);
@ -71,7 +71,10 @@ void print_usage(char *prg)
fprintf(stderr, "\t-O <outfile>\t(default stdout)\n");
}
void prframe(FILE *file, struct timeval *tv, int dev, struct canfd_frame *cf, unsigned int max_dlen, char *extra_info) {
static void prframe(FILE *file, struct timeval *tv, int dev,
struct canfd_frame *cf, char *extra_info)
{
static char abuf[BUFLEN];
fprintf(file, "(%llu.%06llu) ", (unsigned long long)tv->tv_sec, (unsigned long long)tv->tv_usec);
@ -80,11 +83,12 @@ void prframe(FILE *file, struct timeval *tv, int dev, struct canfd_frame *cf, un
else
fprintf(file, "canX ");
fprint_canframe(file, cf, extra_info, 0, max_dlen);
snprintf_canframe(abuf, sizeof(abuf), (cu_t *)cf, 0);
fprintf(file, "%s%s", abuf, extra_info);
}
void get_can_id(struct canfd_frame *cf, char *idstring, int base) {
static void get_can_id(struct canfd_frame *cf, char *idstring, int base)
{
if (idstring[strlen(idstring)-1] == 'x') {
cf->can_id = CAN_EFF_FLAG;
idstring[strlen(idstring)-1] = 0;
@ -94,9 +98,9 @@ void get_can_id(struct canfd_frame *cf, char *idstring, int base) {
cf->can_id |= strtoul(idstring, NULL, base);
}
void calc_tv(struct timeval *tv, struct timeval *read_tv,
struct timeval *date_tv, char timestamps, int dplace) {
static void calc_tv(struct timeval *tv, struct timeval *read_tv,
struct timeval *date_tv, char timestamps, int dplace)
{
if (dplace == 4) /* shift values having only 4 decimal places */
read_tv->tv_usec *= 100; /* and need for 6 */
@ -126,12 +130,13 @@ void calc_tv(struct timeval *tv, struct timeval *read_tv,
}
}
void eval_can(char* buf, struct timeval *date_tvp, char timestamps, char base, int dplace, FILE *outfile) {
static void eval_can(char* buf, struct timeval *date_tvp, char timestamps,
char base, int dplace, FILE *outfile)
{
int interface;
static struct timeval tv; /* current frame timestamp */
static struct timeval read_tv; /* frame timestamp from ASC file */
struct canfd_frame cf;
struct canfd_frame cf = { 0 };
struct can_frame *ccf = (struct can_frame *)&cf; /* for len8_dlc */
char rtr;
int dlc = 0;
@ -152,13 +157,12 @@ void eval_can(char* buf, struct timeval *date_tvp, char timestamps, char base, i
if (!strncmp(tmp1, "ErrorFrame", strlen("ErrorFrame"))) {
memset(&cf, 0, sizeof(cf));
/* do not know more than 'Error' */
cf.can_id = (CAN_ERR_FLAG | CAN_ERR_BUSERROR);
cf.len = CAN_ERR_DLC;
calc_tv(&tv, &read_tv, date_tvp, timestamps, dplace);
prframe(outfile, &tv, interface, &cf, CAN_MAX_DLEN, "\n");
prframe(outfile, &tv, interface, &cf, "\n");
fflush(outfile);
return;
}
@ -232,13 +236,14 @@ void eval_can(char* buf, struct timeval *date_tvp, char timestamps, char base, i
cf.data[i] = data[i] & 0xFFU;
calc_tv(&tv, &read_tv, date_tvp, timestamps, dplace);
prframe(outfile, &tv, interface, &cf, CAN_MAX_DLEN, extra_info);
prframe(outfile, &tv, interface, &cf, extra_info);
fflush(outfile);
}
}
void eval_canfd(char* buf, struct timeval *date_tvp, char timestamps, int dplace, FILE *outfile) {
static void eval_canfd(char* buf, struct timeval *date_tvp, char timestamps,
int dplace, FILE *outfile)
{
int interface;
static struct timeval tv; /* current frame timestamp */
static struct timeval read_tv; /* frame timestamp from ASC file */
@ -343,14 +348,13 @@ void eval_canfd(char* buf, struct timeval *date_tvp, char timestamps, int dplace
#define ASC_F_ESI 0x00004000
if (flags & ASC_F_FDF) {
dlen = CANFD_MAX_DLEN;
cf.flags = CANFD_FDF;
if (flags & ASC_F_BRS)
cf.flags |= CANFD_BRS;
if (flags & ASC_F_ESI)
cf.flags |= CANFD_ESI;
} else {
/* yes. The 'CANFD' format supports classic CAN content! */
dlen = CAN_MAX_DLEN;
if (flags & ASC_F_RTR) {
cf.can_id |= CAN_RTR_FLAG;
/* dlen is always 0 for classic CAN RTR frames
@ -369,14 +373,14 @@ void eval_canfd(char* buf, struct timeval *date_tvp, char timestamps, int dplace
}
calc_tv(&tv, &read_tv, date_tvp, timestamps, dplace);
prframe(outfile, &tv, interface, &cf, dlen, extra_info);
prframe(outfile, &tv, interface, &cf, extra_info);
fflush(outfile);
/* No support for really strange CANFD ErrorFrames format m( */
}
int get_date(struct timeval *tv, char *date) {
static int get_date(struct timeval *tv, char *date)
{
struct tm tms;
unsigned int msecs = 0;

6
canbusload.c
View File

@ -94,7 +94,7 @@ static unsigned char bargraph;
static enum cfl_mode mode = CFL_WORSTCASE;
static char *prg;
void print_usage(char *prg)
static void print_usage(char *prg)
{
fprintf(stderr, "%s - monitor CAN bus load.\n", prg);
fprintf(stderr, "\nUsage: %s [options] <CAN interface>+\n", prg);
@ -124,13 +124,13 @@ void print_usage(char *prg)
fprintf(stderr, "\n");
}
void sigterm(int signo)
static void sigterm(int signo)
{
running = 0;
signal_num = signo;
}
void printstats(int signo)
static void printstats(int signo)
{
int i, j, percent;

143
candump.c
View File

@ -109,7 +109,7 @@ static char *progname;
static char devname[MAXIFNAMES][IFNAMSIZ + 1];
static int dindex[MAXIFNAMES];
static int max_devname_len; /* to prevent frazzled device name output */
static const int canfd_on = 1;
static const int canfx_on = 1;
#define MAXANI 4
static const char anichar[MAXANI] = { '|', '/', '-', '\\' };
@ -220,12 +220,16 @@ static int idx2dindex(int ifidx, int socket)
return i;
}
static inline void sprint_timestamp(const char timestamp, const struct timeval *tv,
struct timeval *const last_tv, char *ts_buffer)
static int sprint_timestamp(char *ts_buffer, const char timestamp,
const struct timeval *tv, struct timeval *const last_tv)
{
int numchars = 0;
switch (timestamp) {
case 'a': /* absolute with timestamp */
sprintf(ts_buffer, "(%010llu.%06llu) ", (unsigned long long)tv->tv_sec, (unsigned long long)tv->tv_usec);
numchars = sprintf(ts_buffer, "(%010llu.%06llu) ",
(unsigned long long)tv->tv_sec,
(unsigned long long)tv->tv_usec);
break;
case 'A': /* absolute with date */
@ -235,7 +239,8 @@ static inline void sprint_timestamp(const char timestamp, const struct timeval *
tm = *localtime(&tv->tv_sec);
strftime(timestring, 24, "%Y-%m-%d %H:%M:%S", &tm);
sprintf(ts_buffer, "(%s.%06llu) ", timestring, (unsigned long long)tv->tv_usec);
numchars = sprintf(ts_buffer, "(%s.%06llu) ", timestring,
(unsigned long long)tv->tv_usec);
}
break;
@ -252,7 +257,9 @@ static inline void sprint_timestamp(const char timestamp, const struct timeval *
diff.tv_sec--, diff.tv_usec += 1000000;
if (diff.tv_sec < 0)
diff.tv_sec = diff.tv_usec = 0;
sprintf(ts_buffer, "(%03llu.%06llu) ", (unsigned long long)diff.tv_sec, (unsigned long long)diff.tv_usec);
numchars = sprintf(ts_buffer, "(%03llu.%06llu) ",
(unsigned long long)diff.tv_sec,
(unsigned long long)diff.tv_usec);
if (timestamp == 'd')
*last_tv = *tv; /* update for delta calculation */
@ -262,15 +269,13 @@ static inline void sprint_timestamp(const char timestamp, const struct timeval *
default: /* no timestamp output */
break;
}
if (numchars <= 0) {
ts_buffer[0] = 0; /* empty terminated string */
numchars = 0;
}
static inline void print_timestamp(const char timestamp, const struct timeval *tv,
struct timeval *const last_tv)
{
static char buffer[TIMESTAMPSZ];
sprint_timestamp(timestamp, tv, last_tv, buffer);
printf("%s", buffer);
return numchars;
}
int main(int argc, char **argv)
@ -301,6 +306,11 @@ int main(int argc, char **argv)
struct sockaddr_can addr = {
.can_family = AF_CAN,
};
struct can_raw_vcid_options vcid_opts = {
.flags = CAN_RAW_XL_VCID_RX_FILTER,
.rx_vcid = 0,
.rx_vcid_mask = 0,
};
char ctrlmsg[CMSG_SPACE(sizeof(struct timeval)) +
CMSG_SPACE(3 * sizeof(struct timespec)) +
CMSG_SPACE(sizeof(__u32))];
@ -309,14 +319,16 @@ int main(int argc, char **argv)
struct cmsghdr *cmsg;
struct can_filter *rfilter;
can_err_mask_t err_mask;
struct canfd_frame frame;
int nbytes, i, maxdlen;
static cu_t cu; /* union for CAN CC/FD/XL frames */
int nbytes, i;
struct ifreq ifr;
struct timeval tv, last_tv;
int timeout_ms = -1; /* default to no timeout */
FILE *logfile = NULL;
char fname[83]; /* suggested by -Wformat-overflow= */
const char *logname = NULL;
static char afrbuf[AFRSZ]; /* ASCII CAN frame buffer size */
static int alen;
signal(SIGTERM, sigterm);
signal(SIGHUP, sigterm);
@ -589,7 +601,13 @@ int main(int argc, char **argv)
} /* if (nptr) */
/* try to switch the socket into CAN FD mode */
setsockopt(obj->s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfd_on, sizeof(canfd_on));
setsockopt(obj->s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfx_on, sizeof(canfx_on));
/* try to switch the socket into CAN XL mode */
setsockopt(obj->s, SOL_CAN_RAW, CAN_RAW_XL_FRAMES, &canfx_on, sizeof(canfx_on));
/* try to enable the CAN XL VCID pass through mode */
setsockopt(obj->s, SOL_CAN_RAW, CAN_RAW_XL_VCID_OPTS, &vcid_opts, sizeof(vcid_opts));
if (rcvbuf_size) {
int curr_rcvbuf_size;
@ -693,7 +711,7 @@ int main(int argc, char **argv)
}
/* these settings are static and can be held out of the hot path */
iov.iov_base = &frame;
iov.iov_base = &cu;
msg.msg_name = &addr;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
@ -719,7 +737,7 @@ int main(int argc, char **argv)
char *extra_info = "";
/* these settings may be modified by recvmsg() */
iov.iov_len = sizeof(frame);
iov.iov_len = sizeof(cu);
msg.msg_namelen = sizeof(addr);
msg.msg_controllen = sizeof(ctrlmsg);
msg.msg_flags = 0;
@ -736,15 +754,29 @@ int main(int argc, char **argv)
return 1;
}
if ((size_t)nbytes == CAN_MTU)
maxdlen = CAN_MAX_DLEN;
else if ((size_t)nbytes == CANFD_MTU)
maxdlen = CANFD_MAX_DLEN;
else {
fprintf(stderr, "read: incomplete CAN frame\n");
/* mark dual-use struct canfd_frame */
if (nbytes < CANXL_HDR_SIZE + CANXL_MIN_DLEN) {
fprintf(stderr, "read: no CAN frame\n");
return 1;
}
if (cu.xl.flags & CANXL_XLF) {
if (nbytes != CANXL_HDR_SIZE + cu.xl.len) {
printf("nbytes = %d\n", nbytes);
fprintf(stderr, "read: no CAN XL frame\n");
return 1;
}
} else {
if (nbytes == CAN_MTU)
cu.fd.flags = 0;
else if (nbytes == CANFD_MTU)
cu.fd.flags |= CANFD_FDF;
else {
fprintf(stderr, "read: incomplete CAN CC/FD frame\n");
return 1;
}
}
if (count && (--count == 0))
running = 0;
@ -786,7 +818,7 @@ int main(int argc, char **argv)
}
/* once we detected a EFF frame indent SFF frames accordingly */
if (frame.can_id & CAN_EFF_FLAG)
if (cu.fd.can_id & CAN_EFF_FLAG)
view |= CANLIB_VIEW_INDENT_SFF;
if (extra_msg_info) {
@ -796,32 +828,29 @@ int main(int argc, char **argv)
extra_info = " R";
}
if (log) {
char buf[CL_CFSZ]; /* max length */
char ts_buf[TIMESTAMPSZ];
/* build common log format output */
if ((log) || ((logfrmt) && (silent == SILENT_OFF))) {
sprint_timestamp(logtimestamp, &tv, &last_tv, ts_buf);
alen = sprint_timestamp(afrbuf, logtimestamp,
&tv, &last_tv);
/* log CAN frame with absolute timestamp & device */
sprint_canframe(buf, &frame, 0, maxdlen);
fprintf(logfile, "%s%*s %s%s\n", ts_buf,
max_devname_len, devname[idx], buf,
extra_info);
alen += sprintf(afrbuf + alen, "%*s ",
max_devname_len, devname[idx]);
alen += snprintf_canframe(afrbuf + alen, sizeof(afrbuf) - alen, &cu, 0);
}
if ((logfrmt) && (silent == SILENT_OFF)) {
char buf[CL_CFSZ]; /* max length */
/* write CAN frame in log file style to logfile */
if (log)
fprintf(logfile, "%s%s\n", afrbuf, extra_info);
/* print CAN frame in log file style to stdout */
sprint_canframe(buf, &frame, 0, maxdlen);
print_timestamp(logtimestamp, &tv, &last_tv);
printf("%*s %s%s\n",
max_devname_len, devname[idx], buf,
extra_info);
if ((logfrmt) && (silent == SILENT_OFF)) {
printf("%s%s\n", afrbuf, extra_info);
goto out_fflush; /* no other output to stdout */
}
/* print only animation */
if (silent != SILENT_OFF) {
if (silent == SILENT_ANI) {
printf("%c\b", anichar[silentani %= MAXANI]);
@ -830,25 +859,33 @@ int main(int argc, char **argv)
goto out_fflush; /* no other output to stdout */
}
printf(" %s", (color > 2) ? col_on[idx % MAXCOL] : "");
print_timestamp(timestamp, &tv, &last_tv);
printf(" %s", (color && (color < 3)) ? col_on[idx % MAXCOL] : "");
printf("%*s", max_devname_len, devname[idx]);
/* print (colored) long CAN frame style to stdout */
alen = sprintf(afrbuf, " %s", (color > 2) ? col_on[idx % MAXCOL] : "");
alen += sprint_timestamp(afrbuf + alen, timestamp, &tv, &last_tv);
alen += sprintf(afrbuf + alen, " %s%*s",
(color && (color < 3)) ? col_on[idx % MAXCOL] : "",
max_devname_len, devname[idx]);
if (extra_msg_info) {
if (msg.msg_flags & MSG_DONTROUTE)
printf(" TX %s", extra_m_info[frame.flags & 3]);
alen += sprintf(afrbuf + alen, " TX %s",
extra_m_info[cu.fd.flags & 3]);
else
printf(" RX %s", extra_m_info[frame.flags & 3]);
alen += sprintf(afrbuf + alen, " RX %s",
extra_m_info[cu.fd.flags & 3]);
}
printf("%s ", (color == 1) ? col_off : "");
alen += sprintf(afrbuf + alen, "%s ", (color == 1) ? col_off : "");
alen += snprintf_long_canframe(afrbuf + alen, sizeof(afrbuf) - alen, &cu, view);
fprint_long_canframe(stdout, &frame, NULL, view, maxdlen);
printf("%s", (color > 1) ? col_off : "");
printf("\n");
if ((view & CANLIB_VIEW_ERROR) && (cu.fd.can_id & CAN_ERR_FLAG)) {
alen += sprintf(afrbuf + alen, "\n\t");
alen += snprintf_can_error_frame(afrbuf + alen,
sizeof(afrbuf) - alen,
&cu.fd, "\n\t");
}
printf("%s%s\n", afrbuf, (color > 1) ? col_off : "");
out_fflush:
fflush(stdout);
}

333
cangen.c
View File

@ -177,12 +177,17 @@ static void print_usage(char *prg)
fprintf(stderr, " -f (generate CAN FD CAN frames)\n");
fprintf(stderr, " -b (generate CAN FD CAN frames with bitrate switch (BRS))\n");
fprintf(stderr, " -E (generate CAN FD CAN frames with error state (ESI))\n");
fprintf(stderr, " -X (generate CAN XL CAN frames)\n");
fprintf(stderr, " -R (generate RTR frames)\n");
fprintf(stderr, " -8 (allow DLC values greater then 8 for Classic CAN frames)\n");
fprintf(stderr, " -m (mix -e -f -b -E -R frames)\n");
fprintf(stderr, " -m (mix -e -f -b -E -R -X frames)\n");
fprintf(stderr, " -I <mode> (CAN ID generation mode - see below)\n");
fprintf(stderr, " -L <mode> (CAN data length code (dlc) generation mode - see below)\n");
fprintf(stderr, " -D <mode> (CAN data (payload) generation mode - see below)\n");
fprintf(stderr, " -F <mode> (CAN XL Flags generation mode - see below, no e/o mode)\n");
fprintf(stderr, " -S <mode> (CAN XL SDT generation mode - see below, no e/o mode)\n");
fprintf(stderr, " -A <mode> (CAN XL AF generation mode - see below, no e/o mode)\n");
fprintf(stderr, " -V <mode> (CAN XL VCID generation mode - see below, no e/o mode)\n");
fprintf(stderr, " -p <timeout> (poll on -ENOBUFS to write frames with <timeout> ms)\n");
fprintf(stderr, " -n <count> (terminate after <count> CAN frames - default infinite)\n");
fprintf(stderr, " -i (ignore -ENOBUFS return values on write() syscalls)\n");
@ -293,12 +298,11 @@ static int setsockopt_txtime(int fd)
return 0;
}
static int do_send_one(int fd, void *buf, size_t len, int timeout)
static int do_send_one(int fd, cu_t *cu, size_t len, int timeout)
{
uint8_t control[CMSG_SPACE(sizeof(uint64_t))] = { 0 };
struct iovec iov = {
.iov_base = buf,
.iov_len = len,
.iov_base = cu,
};
struct msghdr msg = {
.msg_iov = &iov,
@ -307,6 +311,12 @@ static int do_send_one(int fd, void *buf, size_t len, int timeout)
ssize_t nbytes;
int ret;
/* CAN XL frames need real frame length for sending */
if (len == CANXL_MTU)
len = CANXL_HDR_SIZE + cu->xl.len;
iov.iov_len = len;
if (use_so_txtime) {
struct cmsghdr *cm;
uint64_t tdeliver;
@ -443,20 +453,31 @@ int main(int argc, char **argv)
unsigned long polltimeout = 0;
unsigned char extended = 0;
unsigned char canfd = 0;
unsigned char canxl = 0;
unsigned char brs = 0;
unsigned char esi = 0;
unsigned char mix = 0;
unsigned char id_mode = MODE_RANDOM;
unsigned char data_mode = MODE_RANDOM;
unsigned char dlc_mode = MODE_RANDOM;
__u8 xl_flags = 0;
__u8 xl_sdt = 0;
__u32 xl_af = 0;
__u8 xl_vcid = 0;
unsigned char xl_flags_mode = MODE_RANDOM;
unsigned char xl_sdt_mode = MODE_RANDOM;
unsigned char xl_af_mode = MODE_RANDOM;
unsigned char xl_vcid_mode = MODE_RANDOM;
unsigned char loopback_disable = 0;
unsigned char verbose = 0;
unsigned char rtr_frame = 0;
unsigned char len8_dlc = 0;
unsigned char view = 0;
int count = 0;
unsigned long burst_sent_count = 0;
int mtu, maxdlen;
uint64_t incdata = 0;
__u8 *data; /* base pointer for CC/FD or XL data */
int incdlc = 0;
unsigned long rnd;
unsigned char fixdata[CANFD_MAX_DLEN];
@ -466,10 +487,13 @@ int main(int argc, char **argv)
int s; /* socket */
struct sockaddr_can addr = { 0 };
static struct canfd_frame frame;
struct can_frame *ccf = (struct can_frame *)&frame;
struct can_raw_vcid_options vcid_opts = {
.flags = CAN_RAW_XL_VCID_TX_PASS,
};
static cu_t cu;
int i;
struct ifreq ifr;
struct ifreq ifr = { 0 };
const int enable_canfx = 1;
struct timeval now;
int ret;
@ -488,7 +512,7 @@ int main(int argc, char **argv)
{ 0, 0, 0, 0 },
};
while ((opt = getopt_long(argc, argv, "g:atefbER8mI:L:D:p:n:ixc:vh?", long_options, NULL)) != -1) {
while ((opt = getopt_long(argc, argv, "g:atefbEXR8mI:L:D:F:S:A:V:p:n:ixc:vh?", long_options, NULL)) != -1) {
switch (opt) {
case 'g':
gap = strtod(optarg, NULL);
@ -516,6 +540,7 @@ int main(int argc, char **argv)
break;
case 'e':
extended = 1;
view |= CANLIB_VIEW_INDENT_SFF;
break;
case 'f':
@ -532,17 +557,23 @@ int main(int argc, char **argv)
canfd = 1;
break;
case 'X':
canxl = 1;
break;
case 'R':
rtr_frame = 1;
break;
case '8':
len8_dlc = 1;
view |= CANLIB_VIEW_LEN8_DLC;
break;
case 'm':
mix = 1;
canfd = 1; /* to switch the socket into CAN FD mode */
view |= CANLIB_VIEW_INDENT_SFF;
break;
case 'I':
@ -556,7 +587,7 @@ int main(int argc, char **argv)
id_mode = MODE_RANDOM_ODD;
} else {
id_mode = MODE_FIX;
frame.can_id = strtoul(optarg, NULL, 16);
cu.fd.can_id = strtoul(optarg, NULL, 16);
}
break;
@ -567,7 +598,7 @@ int main(int argc, char **argv)
dlc_mode = MODE_INCREMENT;
} else {
dlc_mode = MODE_FIX;
frame.len = atoi(optarg) & 0xFF; /* is cut to 8 / 64 later */
cu.fd.len = atoi(optarg) & 0xFF; /* is cut to 8 / 64 later */
}
break;
@ -586,6 +617,59 @@ int main(int argc, char **argv)
}
break;
case 'F':
if (optarg[0] == 'r') {
xl_flags_mode = MODE_RANDOM;
} else if (optarg[0] == 'i') {
xl_flags_mode = MODE_INCREMENT;
} else {
xl_flags_mode = MODE_FIX;
if (sscanf(optarg, "%hhx", &xl_flags) != 1) {
printf("Bad xl_flags definition '%s'.\n", optarg);
exit(1);
}
}
break;
case 'S':
if (optarg[0] == 'r') {
xl_sdt_mode = MODE_RANDOM;
} else if (optarg[0] == 'i') {
xl_sdt_mode = MODE_INCREMENT;
} else {
xl_sdt_mode = MODE_FIX;
if (sscanf(optarg, "%hhx", &xl_sdt) != 1) {
printf("Bad xl_sdt definition '%s'.\n", optarg);
exit(1);
}
}
break;
case 'A':
if (optarg[0] == 'r') {
xl_af_mode = MODE_RANDOM;
} else if (optarg[0] == 'i') {
xl_af_mode = MODE_INCREMENT;
} else {
xl_af_mode = MODE_FIX;
xl_af = strtoul(optarg, NULL, 16);
}
break;
case 'V':
if (optarg[0] == 'r') {
xl_vcid_mode = MODE_RANDOM;
} else if (optarg[0] == 'i') {
xl_vcid_mode = MODE_INCREMENT;
} else {
xl_vcid_mode = MODE_FIX;
if (sscanf(optarg, "%hhx", &xl_vcid) != 1) {
printf("Bad xl_vcid definition '%s'.\n", optarg);
exit(1);
}
}
break;
case 'p':
polltimeout = strtoul(optarg, NULL, 10);
break;
@ -627,10 +711,13 @@ int main(int argc, char **argv)
return 1;
}
if (verbose > 2)
view |= CANLIB_VIEW_ASCII;
ts_gap = double_to_timespec(gap / 1000);
/* recognize obviously missing commandline option */
if (id_mode == MODE_FIX && frame.can_id > 0x7FF && !extended) {
if (id_mode == MODE_FIX && cu.fd.can_id > 0x7FF && !extended) {
printf("The given CAN-ID is greater than 0x7FF and the '-e' option is not set.\n");
return 1;
}
@ -670,8 +757,7 @@ int main(int argc, char **argv)
&loopback, sizeof(loopback));
}
if (canfd) {
const int enable_canfd = 1;
if (canfd || canxl) {
/* check if the frame fits into the CAN netdevice */
if (ioctl(s, SIOCGIFMTU, &ifr) < 0) {
@ -679,31 +765,61 @@ int main(int argc, char **argv)
return 1;
}
if (ifr.ifr_mtu != CANFD_MTU && ifr.ifr_mtu != CANXL_MTU) {
printf("CAN interface is only Classical CAN capable - sorry.\n");
if (canfd) {
/* ensure discrete CAN FD length values 0..8, 12, 16, 20, 24, 32, 64 */
cu.fd.len = can_fd_dlc2len(can_fd_len2dlc(cu.fd.len));
} else {
/* limit fixed CAN XL data length to 64 */
if (cu.fd.len > CANFD_MAX_DLEN)
cu.fd.len = CANFD_MAX_DLEN;
}
if (canxl && (ifr.ifr_mtu < CANXL_MIN_MTU)) {
printf("CAN interface not CAN XL capable - sorry.\n");
return 1;
}
if (canfd && (ifr.ifr_mtu < CANFD_MTU)) {
printf("CAN interface not CAN FD capable - sorry.\n");
return 1;
}
if (ifr.ifr_mtu == CANFD_MTU) {
/* interface is ok - try to switch the socket into CAN FD mode */
if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &enable_canfd, sizeof(enable_canfd))) {
if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES,
&enable_canfx, sizeof(enable_canfx))){
printf("error when enabling CAN FD support\n");
return 1;
}
}
if (ifr.ifr_mtu >= CANXL_MIN_MTU) {
/* interface is ok - try to switch the socket into CAN XL mode */
if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_XL_FRAMES,
&enable_canfx, sizeof(enable_canfx))){
printf("error when enabling CAN XL support\n");
return 1;
}
/* try to enable the CAN XL VCID pass through mode */
if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_XL_VCID_OPTS,
&vcid_opts, sizeof(vcid_opts))) {
printf("error when enabling CAN XL VCID pass through\n");
return 1;
}
}
/* ensure discrete CAN FD length values 0..8, 12, 16, 20, 24, 32, 64 */
frame.len = can_fd_dlc2len(can_fd_len2dlc(frame.len));
} else {
/* sanitize Classical CAN 2.0 frame length */
if (len8_dlc) {
if (frame.len > CAN_MAX_RAW_DLC)
frame.len = CAN_MAX_RAW_DLC;
if (cu.cc.len > CAN_MAX_RAW_DLC)
cu.cc.len = CAN_MAX_RAW_DLC;
if (frame.len > CAN_MAX_DLEN)
ccf->len8_dlc = frame.len;
if (cu.cc.len > CAN_MAX_DLEN)
cu.cc.len8_dlc = cu.cc.len;
}
if (frame.len > CAN_MAX_DLEN)
frame.len = CAN_MAX_DLEN;
if (cu.cc.len > CAN_MAX_DLEN)
cu.cc.len = CAN_MAX_DLEN;
}
if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
@ -722,96 +838,107 @@ int main(int argc, char **argv)
return 1;
while (running) {
frame.flags = 0;
cu.fd.flags = 0;
if (count && (--count == 0))
running = 0;
if (canfd) {
if (canxl) {
mtu = CANXL_MTU;
maxdlen = CANFD_MAX_DLEN; /* generate up to 64 byte */
extended = 0; /* prio has only 11 bit ID content */
data = cu.xl.data; /* fill CAN XL data */
} else if (canfd) {
mtu = CANFD_MTU;
maxdlen = CANFD_MAX_DLEN;
data = cu.fd.data; /* fill CAN CC/FD data */
cu.fd.flags = CANFD_FDF;
if (brs)
frame.flags |= CANFD_BRS;
cu.fd.flags |= CANFD_BRS;
if (esi)
frame.flags |= CANFD_ESI;
cu.fd.flags |= CANFD_ESI;
} else {
mtu = CAN_MTU;
maxdlen = CAN_MAX_DLEN;
data = cu.cc.data; /* fill CAN CC/FD data */
}
if (id_mode == MODE_RANDOM)
frame.can_id = random();
cu.fd.can_id = random();
else if (id_mode == MODE_RANDOM_EVEN)
frame.can_id = random() & ~0x1;
cu.fd.can_id = random() & ~0x1;
else if (id_mode == MODE_RANDOM_ODD)
frame.can_id = random() | 0x1;
cu.fd.can_id = random() | 0x1;
if (extended) {
frame.can_id &= CAN_EFF_MASK;
frame.can_id |= CAN_EFF_FLAG;
} else
frame.can_id &= CAN_SFF_MASK;
cu.fd.can_id &= CAN_EFF_MASK;
cu.fd.can_id |= CAN_EFF_FLAG;
} else {
cu.fd.can_id &= CAN_SFF_MASK;
}
if (rtr_frame && !canfd)
frame.can_id |= CAN_RTR_FLAG;
if (rtr_frame && !canfd && !canxl)
cu.fd.can_id |= CAN_RTR_FLAG;
if (dlc_mode == MODE_RANDOM) {
if (canfd)
frame.len = can_fd_dlc2len(random() & 0xF);
if (canxl)
cu.fd.len = CANXL_MIN_DLEN + (random() & 0x3F);
else if (canfd)
cu.fd.len = can_fd_dlc2len(random() & 0xF);
else {
frame.len = random() & 0xF;
cu.cc.len = random() & 0xF;
if (frame.len > CAN_MAX_DLEN) {
if (cu.cc.len > CAN_MAX_DLEN) {
/* generate Classic CAN len8 DLCs? */
if (len8_dlc)
ccf->len8_dlc = frame.len;
cu.cc.len8_dlc = cu.cc.len;
frame.len = 8; /* for about 50% of the frames */
cu.cc.len = 8; /* for about 50% of the frames */
} else {
ccf->len8_dlc = 0;
cu.cc.len8_dlc = 0;
}
}
}
if (data_mode == MODE_INCREMENT && !frame.len)
frame.len = 1; /* min dlc value for incr. data */
if (data_mode == MODE_INCREMENT && !cu.cc.len)
cu.cc.len = 1; /* min dlc value for incr. data */
if (data_mode == MODE_RANDOM) {
rnd = random();
memcpy(&frame.data[0], &rnd, 4);
memcpy(&data[0], &rnd, 4);
rnd = random();
memcpy(&frame.data[4], &rnd, 4);
memcpy(&data[4], &rnd, 4);
/* omit extra random number generation for CAN FD */
if (canfd && frame.len > 8) {
memcpy(&frame.data[8], &frame.data[0], 8);
memcpy(&frame.data[16], &frame.data[0], 16);
memcpy(&frame.data[32], &frame.data[0], 32);
if ((canfd || canxl) && cu.fd.len > 8) {
memcpy(&data[8], &data[0], 8);
memcpy(&data[16], &data[0], 16);
memcpy(&data[32], &data[0], 32);
}
}
if (data_mode == MODE_RANDOM_FIX) {
int i;
memcpy(frame.data, fixdata, CANFD_MAX_DLEN);
memcpy(data, fixdata, CANFD_MAX_DLEN);
for (i = 0; i < frame.len; i++) {
for (i = 0; i < cu.fd.len; i++) {
if (rand_position[i] == (NIBBLE_H | NIBBLE_L)) {
frame.data[i] = random();
data[i] = random();
} else if (rand_position[i] == NIBBLE_H) {
frame.data[i] = (frame.data[i] & 0x0f) | (random() & 0xf0);
data[i] = (data[i] & 0x0f) | (random() & 0xf0);
} else if (rand_position[i] == NIBBLE_L) {
frame.data[i] = (frame.data[i] & 0xf0) | (random() & 0x0f);
data[i] = (data[i] & 0xf0) | (random() & 0x0f);
}
}
}
if (data_mode == MODE_FIX)
memcpy(frame.data, fixdata, CANFD_MAX_DLEN);
memcpy(data, fixdata, CANFD_MAX_DLEN);
/* set unused payload data to zero like the CAN driver does it on rx */
if (frame.len < maxdlen)
memset(&frame.data[frame.len], 0, maxdlen - frame.len);
if (cu.fd.len < maxdlen)
memset(&data[cu.fd.len], 0, maxdlen - cu.fd.len);
if (!use_so_txtime &&
(ts.tv_sec || ts.tv_nsec) &&
@ -826,16 +953,70 @@ int main(int argc, char **argv)
}
}
if (canxl) {
/* convert some CAN FD frame content into a CAN XL frame */
if (cu.fd.len < CANXL_MIN_DLEN) {
cu.fd.len = CANXL_MIN_DLEN;
data[0] = 0xCC; /* default filler */
}
cu.xl.len = cu.fd.len;
rnd = random();
if (xl_flags_mode == MODE_RANDOM) {
cu.xl.flags = rnd & CANXL_SEC;
} else if (xl_flags_mode == MODE_FIX) {
cu.xl.flags = xl_flags;
} else if (xl_flags_mode == MODE_INCREMENT) {
xl_flags ^= CANXL_SEC;
cu.xl.flags = (xl_flags & CANXL_SEC);
}
/* mark CAN XL frame */
cu.xl.flags |= CANXL_XLF;
if (xl_sdt_mode == MODE_RANDOM) {
cu.xl.sdt = rnd & 0xFF;
} else if (xl_sdt_mode == MODE_FIX) {
cu.xl.sdt = xl_sdt;
} else if (xl_sdt_mode == MODE_INCREMENT) {
xl_sdt++;
cu.xl.sdt = xl_sdt;
}
if (xl_af_mode == MODE_RANDOM) {
cu.xl.af = rnd;
} else if (xl_af_mode == MODE_FIX) {
cu.xl.af = xl_af;
} else if (xl_af_mode == MODE_INCREMENT) {
xl_af++;
cu.xl.af = xl_af;
}
if (xl_vcid_mode == MODE_RANDOM) {
cu.xl.prio |= rnd & CANXL_VCID_MASK;
} else if (xl_vcid_mode == MODE_FIX) {
cu.xl.prio |= xl_vcid << CANXL_VCID_OFFSET;
} else if (xl_vcid_mode == MODE_INCREMENT) {
xl_vcid++;
cu.xl.prio |= xl_vcid << CANXL_VCID_OFFSET;
}
}
if (verbose) {
static char afrbuf[AFRSZ]; /* ASCII CAN frame buffer size */
printf(" %s ", argv[optind]);
if (verbose > 1)
fprint_long_canframe(stdout, &frame, "\n", (verbose > 2) ? 1 : 0, maxdlen);
snprintf_long_canframe(afrbuf, sizeof(afrbuf), &cu, view);
else
fprint_canframe(stdout, &frame, "\n", 1, maxdlen);
snprintf_canframe(afrbuf, sizeof(afrbuf), &cu, 1);
printf("%s\n", afrbuf);
}
ret = do_send_one(s, &frame, mtu, polltimeout);
ret = do_send_one(s, &cu, mtu, polltimeout);
if (ret)
return 1;
@ -843,26 +1024,30 @@ int main(int argc, char **argv)
burst_sent_count = 0;
burst_sent_count++;
/* restore some CAN FD frame content from CAN XL frame */
if (canxl)
cu.fd.len = cu.xl.len;
if (id_mode == MODE_INCREMENT)
frame.can_id++;
cu.cc.can_id++;
if (dlc_mode == MODE_INCREMENT) {
incdlc++;
incdlc %= CAN_MAX_RAW_DLC + 1;
if (canfd && !mix)
frame.len = can_fd_dlc2len(incdlc);
if ((canfd || canxl) && !mix)
cu.fd.len = can_fd_dlc2len(incdlc);
else if (len8_dlc) {
if (incdlc > CAN_MAX_DLEN) {
frame.len = CAN_MAX_DLEN;
ccf->len8_dlc = incdlc;
cu.cc.len = CAN_MAX_DLEN;
cu.cc.len8_dlc = incdlc;
} else {
frame.len = incdlc;
ccf->len8_dlc = 0;
cu.cc.len = incdlc;
cu.cc.len8_dlc = 0;
}
} else {
incdlc %= CAN_MAX_DLEN + 1;
frame.len = incdlc;
cu.fd.len = incdlc;
}
}
@ -870,7 +1055,7 @@ int main(int argc, char **argv)
incdata++;
for (i = 0; i < 8; i++)
frame.data[i] = incdata >> i * 8;
data[i] = incdata >> i * 8;
}
if (mix) {
@ -881,6 +1066,10 @@ int main(int argc, char **argv)
brs = i & 4;
esi = i & 8;
}
/* generate CAN XL traffic if the interface is capable */
if (ifr.ifr_mtu >= CANXL_MIN_MTU)
canxl = ((i & 96) == 96);
rtr_frame = ((i & 24) == 24); /* reduce RTR frames to 1/4 */
}
}

28
cangw.c
View File

@ -82,8 +82,8 @@ struct fdmodattr {
#define NLMSG_TAIL(nmsg) \
((struct rtattr *)(((char *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
int alen)
static int addattr_l(struct nlmsghdr *n, int maxlen, int type,
const void *data, int alen)
{
int len = RTA_LENGTH(alen);
struct rtattr *rta;
@ -101,7 +101,7 @@ int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
return 0;
}
void printfilter(const void *data)
static void printfilter(const void *data)
{
struct can_filter *filter = (struct can_filter *)data;
@ -111,7 +111,7 @@ void printfilter(const void *data)
printf("-f %03X:%X ", filter->can_id, filter->can_mask);
}
void printmod(const char *type, const void *data)
static void printmod(const char *type, const void *data)
{
struct modattr mod;
int i;
@ -137,7 +137,7 @@ void printmod(const char *type, const void *data)
printf(" ");
}
void printfdmod(const char *type, const void *data)
static void printfdmod(const char *type, const void *data)
{
struct fdmodattr mod;
int i;
@ -166,14 +166,14 @@ void printfdmod(const char *type, const void *data)
printf(" ");
}
void print_cs_xor(struct cgw_csum_xor *cs_xor)
static void print_cs_xor(struct cgw_csum_xor *cs_xor)
{
printf("-x %d:%d:%d:%02X ",
cs_xor->from_idx, cs_xor->to_idx,
cs_xor->result_idx, cs_xor->init_xor_val);
}
void print_cs_crc8_profile(struct cgw_csum_crc8 *cs_crc8)
static void print_cs_crc8_profile(struct cgw_csum_crc8 *cs_crc8)
{
int i;
@ -202,7 +202,7 @@ void print_cs_crc8_profile(struct cgw_csum_crc8 *cs_crc8)
printf(" ");
}
void print_cs_crc8(struct cgw_csum_crc8 *cs_crc8)
static void print_cs_crc8(struct cgw_csum_crc8 *cs_crc8)
{
int i;
@ -220,7 +220,7 @@ void print_cs_crc8(struct cgw_csum_crc8 *cs_crc8)
print_cs_crc8_profile(cs_crc8);
}
void print_usage(char *prg)
static void print_usage(char *prg)
{
fprintf(stderr, "%s - manage PF_CAN netlink gateway.\n", prg);
fprintf(stderr, "\nUsage: %s [options]\n\n", prg);
@ -279,7 +279,7 @@ void print_usage(char *prg)
fprintf(stderr, "\n");
}
int b64hex(char *asc, unsigned char *bin, int len)
static int b64hex(char *asc, unsigned char *bin, int len)
{
int i;
@ -290,7 +290,7 @@ int b64hex(char *asc, unsigned char *bin, int len)
return 0;
}
int parse_crc8_profile(char *optarg, struct cgw_csum_crc8 *crc8)
static int parse_crc8_profile(char *optarg, struct cgw_csum_crc8 *crc8)
{
int ret = 1;
char *ptr;
@ -329,7 +329,7 @@ int parse_crc8_profile(char *optarg, struct cgw_csum_crc8 *crc8)
return ret;
}
int parse_mod(char *optarg, struct modattr *modmsg)
static int parse_mod(char *optarg, struct modattr *modmsg)
{
char *ptr, *nptr;
char hexdata[(CAN_MAX_DLEN * 2) + 1] = {0};
@ -397,7 +397,7 @@ int parse_mod(char *optarg, struct modattr *modmsg)
return 0; /* ok */
}
int parse_fdmod(char *optarg, struct fdmodattr *modmsg)
static int parse_fdmod(char *optarg, struct fdmodattr *modmsg)
{
char *ptr, *nptr;
char hexdata[(CANFD_MAX_DLEN * 2) + 1] = {0};
@ -470,7 +470,7 @@ int parse_fdmod(char *optarg, struct fdmodattr *modmsg)
return 0; /* ok */
}
int parse_rtlist(char *prgname, unsigned char *rxbuf, int len)
static int parse_rtlist(char *prgname, unsigned char *rxbuf, int len)
{
char ifname[IF_NAMESIZE]; /* interface name for if_indextoname() */
struct rtcanmsg *rtc;

73
canlogserver.c
View File

@ -72,9 +72,6 @@
#define ANYDEV "any"
#define ANL "\r\n" /* newline in ASC mode */
#define COMMENTSZ 200
#define BUFSZ (sizeof("(1345212884.318850)") + IFNAMSIZ + 4 + CL_CFSZ + COMMENTSZ) /* for one line in the logfile */
#define DEFPORT 28700
static char devname[MAXDEV][IFNAMSIZ+1];
@ -86,7 +83,7 @@ extern int optind, opterr, optopt;
static volatile int running = 1;
static volatile sig_atomic_t signal_num;
void print_usage(char *prg)
static void print_usage(char *prg)
{
fprintf(stderr, "%s - log CAN frames and serves them.\n", prg);
fprintf(stderr, "\nUsage: %s [options] <CAN interface>+\n", prg);
@ -110,7 +107,7 @@ void print_usage(char *prg)
fprintf(stderr, "\n");
}
int idx2dindex(int ifidx, int socket)
static int idx2dindex(int ifidx, int socket)
{
int i;
struct ifreq ifr;
@ -160,7 +157,7 @@ int idx2dindex(int ifidx, int socket)
* This is a Signalhandler. When we get a signal, that a child
* terminated, we wait for it, so the zombie will disappear.
*/
void childdied(int i)
static void childdied(int i)
{
wait(NULL);
}
@ -168,13 +165,12 @@ void childdied(int i)
/*
* This is a Signalhandler for a caught SIGTERM
*/
void shutdown_gra(int i)
static void shutdown_gra(int i)
{
running = 0;
signal_num = i;
}
int main(int argc, char **argv)
{
struct sigaction signalaction;
@ -189,17 +185,22 @@ int main(int argc, char **argv)
int opt, ret;
int currmax = 1; /* we assume at least one can bus ;-) */
struct sockaddr_can addr;
struct can_raw_vcid_options vcid_opts = {
.flags = CAN_RAW_XL_VCID_RX_FILTER,
.rx_vcid = 0,
.rx_vcid_mask = 0,
};
struct can_filter rfilter;
struct canfd_frame frame;
const int canfd_on = 1;
int nbytes, i, j, maxdlen;
static cu_t cu; /* union for CAN CC/FD/XL frames */
const int canfx_on = 1;
int nbytes, i, j;
struct ifreq ifr;
struct timeval tv;
int port = DEFPORT;
struct sockaddr_in inaddr;
struct sockaddr_in clientaddr;
socklen_t sin_size = sizeof(clientaddr);
char temp[BUFSZ];
static char afrbuf[AFRSZ];
sigemptyset(&sigset);
signalaction.sa_handler = &childdied;
@ -345,7 +346,13 @@ int main(int argc, char **argv)
&err_mask[i], sizeof(err_mask[i]));
/* try to switch the socket into CAN FD mode */
setsockopt(s[i], SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfd_on, sizeof(canfd_on));
setsockopt(s[i], SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfx_on, sizeof(canfx_on));
/* try to switch the socket into CAN XL mode */
setsockopt(s[i], SOL_CAN_RAW, CAN_RAW_XL_FRAMES, &canfx_on, sizeof(canfx_on));
/* try to enable the CAN XL VCID pass through mode */
setsockopt(s[i], SOL_CAN_RAW, CAN_RAW_XL_VCID_OPTS, &vcid_opts, sizeof(vcid_opts));
j = strlen(argv[optind+i]);
@ -394,42 +401,54 @@ int main(int argc, char **argv)
socklen_t len = sizeof(addr);
int idx;
if ((nbytes = recvfrom(s[i], &frame, CANFD_MTU, 0,
if ((nbytes = recvfrom(s[i], &cu, sizeof(cu), 0,
(struct sockaddr*)&addr, &len)) < 0) {
perror("read");
return 1;
}
if ((size_t)nbytes == CAN_MTU)
maxdlen = CAN_MAX_DLEN;
else if ((size_t)nbytes == CANFD_MTU)
maxdlen = CANFD_MAX_DLEN;
else {
fprintf(stderr, "read: incomplete CAN frame\n");
if (nbytes < CANXL_HDR_SIZE + CANXL_MIN_DLEN) {
fprintf(stderr, "read: no CAN frame\n");
return 1;
}
if (cu.xl.flags & CANXL_XLF) {
if (nbytes != CANXL_HDR_SIZE + cu.xl.len) {
printf("nbytes = %d\n", nbytes);
fprintf(stderr, "read: no CAN XL frame\n");
return 1;
}
} else {
/* mark dual-use struct canfd_frame */
if (nbytes == CAN_MTU) {
cu.fd.flags = 0;
} else if (nbytes == CANFD_MTU) {
cu.fd.flags |= CANFD_FDF;
} else {
fprintf(stderr, "read: incomplete CAN CC/FD frame\n");
return 1;
}
}
if (ioctl(s[i], SIOCGSTAMP, &tv) < 0)
perror("SIOCGSTAMP");
idx = idx2dindex(addr.can_ifindex, s[i]);
sprintf(temp, "(%llu.%06llu) %*s ",
sprintf(afrbuf, "(%llu.%06llu) %*s ",
(unsigned long long)tv.tv_sec, (unsigned long long)tv.tv_usec, max_devname_len, devname[idx]);
sprint_canframe(temp+strlen(temp), &frame, 0, maxdlen);
strcat(temp, "\n");
snprintf_canframe(afrbuf + strlen(afrbuf), sizeof(afrbuf) - strlen(afrbuf), &cu, 0);
strcat(afrbuf, "\n");
if (write(accsocket, temp, strlen(temp)) < 0) {
if (write(accsocket, afrbuf, strlen(afrbuf)) < 0) {
perror("writeaccsock");
return 1;
}
#if 0
/* print CAN frame in log file style to stdout */
printf("(%lu.%06lu) ", tv.tv_sec, tv.tv_usec);
printf("%*s ", max_devname_len, devname[idx]);
fprint_canframe(stdout, &frame, "\n", 0, maxdlen);
printf("%s", afrbuf);
#endif
}

67
canplayer.c
View File

@ -61,21 +61,35 @@
#define DEFAULT_GAP 1 /* ms */
#define DEFAULT_LOOPS 1 /* only one replay */
#define CHANNELS 20 /* anyone using more than 20 CAN interfaces at a time? */
#define COMMENTSZ 200
#define BUFSZ (sizeof("(1345212884.318850)") + IFNAMSIZ + 4 + CL_CFSZ + COMMENTSZ) /* for one line in the logfile */
#define STDOUTIDX 65536 /* interface index for printing on stdout - bigger than max uint16 */
#if (IFNAMSIZ != 16)
#error "IFNAMSIZ value does not to DEVSZ calculation!"
#endif
#define DEVSZ 22 /* IFNAMSZ + 6 */
#define TIMESZ sizeof("(1345212884.318850) ")
#define BUFSZ (TIMESZ + DEVSZ + AFRSZ)
/* adapt sscanf() functions below on error */
#if (AFRSZ != 6300)
#error "AFRSZ value does not fit sscanf restrictions!"
#endif
#if (DEVSZ != 22)
#error "DEVSZ value does not fit sscanf restrictions!"
#endif
struct assignment {
char txif[IFNAMSIZ];
int txifidx;
char rxif[IFNAMSIZ];
};
static struct assignment asgn[CHANNELS];
const int canfd_on = 1;
const int canfx_on = 1;
extern int optind, opterr, optopt;
void print_usage(char *prg)
static void print_usage(char *prg)
{
fprintf(stderr, "%s - replay a compact CAN frame logfile to CAN devices.\n", prg);
fprintf(stderr, "\nUsage: %s <options> [interface assignment]*\n\n", prg);
@ -158,7 +172,7 @@ static inline int frames_to_send(struct timeval *today, struct timeval *diff, st
return timeval_compare(&cmp, today);
}
int get_txidx(char *logif_name)
static int get_txidx(char *logif_name)
{
int i;
@ -175,7 +189,7 @@ int get_txidx(char *logif_name)
return asgn[i].txifidx; /* return interface index */
}
char *get_txname(char *logif_name)
static char *get_txname(char *logif_name)
{
int i;
@ -192,7 +206,8 @@ char *get_txname(char *logif_name)
return asgn[i].txif; /* return interface name */
}
int add_assignment(char *mode, int socket, char *txname, char *rxname, int verbose)
static int add_assignment(char *mode, int socket, char *txname,
char *rxname, int verbose)
{
struct ifreq ifr;
int i;
@ -239,9 +254,12 @@ int add_assignment(char *mode, int socket, char *txname, char *rxname, int verbo
int main(int argc, char **argv)
{
static char buf[BUFSZ], device[BUFSZ], ascframe[BUFSZ];
static char buf[BUFSZ], device[DEVSZ], afrbuf[AFRSZ];
struct sockaddr_can addr;
static struct canfd_frame frame;
struct can_raw_vcid_options vcid_opts = {
.flags = CAN_RAW_XL_VCID_TX_PASS,
};
static cu_t cu;
static struct timeval today_tv, log_tv, last_log_tv, diff_tv;
struct timespec sleep_ts;
int s; /* CAN_RAW socket */
@ -360,7 +378,13 @@ int main(int argc, char **argv)
setsockopt(s, SOL_CAN_RAW, CAN_RAW_FILTER, NULL, 0);
/* try to switch the socket into CAN FD mode */
setsockopt(s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfd_on, sizeof(canfd_on));
setsockopt(s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfx_on, sizeof(canfx_on));
/* try to switch the socket into CAN XL mode */
setsockopt(s, SOL_CAN_RAW, CAN_RAW_XL_FRAMES, &canfx_on, sizeof(canfx_on));
/* try to enable the CAN XL VCID pass through mode */
setsockopt(s, SOL_CAN_RAW, CAN_RAW_XL_VCID_OPTS, &vcid_opts, sizeof(vcid_opts));
if (loopback_disable) {
int loopback = 0;
@ -417,7 +441,7 @@ int main(int argc, char **argv)
eof = 0;
if (sscanf(buf, "(%llu.%llu) %s %s", &sec, &usec, device, ascframe) != 4) {
if (sscanf(buf, "(%llu.%llu) %21s %6299s", &sec, &usec, device, afrbuf) != 4) {
fprintf(stderr, "incorrect line format in logfile\n");
return 1;
}
@ -446,7 +470,7 @@ int main(int argc, char **argv)
if (interactive)
getchar();
/* log_tv/device/ascframe are valid here */
/* log_tv/device/afrbuf are valid here */
if (strlen(device) >= IFNAMSIZ) {
fprintf(stderr, "log interface name '%s' too long!", device);
@ -470,27 +494,28 @@ int main(int argc, char **argv)
} else if (txidx > 0) { /* only send to valid CAN devices */
txmtu = parse_canframe(ascframe, &frame);
txmtu = parse_canframe(afrbuf, &cu); /* dual-use frame */
if (!txmtu) {
fprintf(stderr, "wrong CAN frame format: '%s'!", ascframe);
fprintf(stderr, "wrong CAN frame format: '%s'!", afrbuf);
return 1;
}
/* CAN XL frames need real frame length for sending */
if (txmtu == CANXL_MTU)
txmtu = CANXL_HDR_SIZE + cu.xl.len;
addr.can_family = AF_CAN;
addr.can_ifindex = txidx; /* send via this interface */
if (sendto(s, &frame, txmtu, 0, (struct sockaddr *)&addr, sizeof(addr)) != txmtu) {
if (sendto(s, &cu, txmtu, 0, (struct sockaddr *)&addr, sizeof(addr)) != txmtu) {
perror("sendto");
return 1;
}
if (verbose) {
printf("%s (%s) ", get_txname(device), device);
if (txmtu == CAN_MTU)
fprint_long_canframe(stdout, &frame, "\n", CANLIB_VIEW_INDENT_SFF, CAN_MAX_DLEN);
else
fprint_long_canframe(stdout, &frame, "\n", CANLIB_VIEW_INDENT_SFF, CANFD_MAX_DLEN);
snprintf_long_canframe(afrbuf, sizeof(afrbuf), &cu, CANLIB_VIEW_INDENT_SFF);
printf("%s\n", afrbuf);
}
if (count && (--count == 0))
@ -510,7 +535,7 @@ int main(int argc, char **argv)
break;
}
if (sscanf(buf, "(%llu.%llu) %s %s", &sec, &usec, device, ascframe) != 4) {
if (sscanf(buf, "(%llu.%llu) %s %s", &sec, &usec, device, afrbuf) != 4) {
fprintf(stderr, "incorrect line format in logfile\n");
return 1;
}

72
cansend.c
View File

@ -64,11 +64,13 @@ static void print_usage(char *prg)
"Usage: %s <device> <can_frame>.\n"
"\n"
"<can_frame>:\n"
" <can_id>#{data} for Classical CAN 2.0 data frames\n"
" <can_id>#R{len} for Classical CAN 2.0 data frames\n"
" <can_id>#{data}_{dlc} for Classical CAN 2.0 data frames\n"
" <can_id>#R{len}_{dlc} for Classical CAN 2.0 data frames\n"
" <can_id>##<flags>{data} for CAN FD frames\n\n"
" <can_id>#{data} for CAN CC (Classical CAN 2.0B) data frames\n"
" <can_id>#R{len} for CAN CC (Classical CAN 2.0B) data frames\n"
" <can_id>#{data}_{dlc} for CAN CC (Classical CAN 2.0B) data frames\n"
" <can_id>#R{len}_{dlc} for CAN CC (Classical CAN 2.0B) data frames\n"
" <can_id>##<flags>{data} for CAN FD frames\n"
" <vcid><prio>#<flags>:<sdt>:<af>#<data> for CAN XL frames\n"
"\n"
"<can_id>:\n"
" 3 (SFF) or 8 (EFF) hex chars\n"
"{data}:\n"
@ -80,9 +82,23 @@ static void print_usage(char *prg)
"<flags>:\n"
" a single ASCII Hex value (0 .. F) which defines canfd_frame.flags\n"
"\n"
"<vcid>:\n"
" 2 hex chars - virtual CAN network identifier (00 .. FF)\n"
"<prio>:\n"
" 3 hex chars - 11 bit priority value (000 .. 7FF)\n"
"<flags>:\n"
" 2 hex chars values (00 .. FF) which defines canxl_frame.flags\n"
"<sdt>:\n"
" 2 hex chars values (00 .. FF) which defines canxl_frame.sdt\n"
"<af>:\n"
" 8 hex chars - 32 bit acceptance field (canxl_frame.af)\n"
"<data>:\n"
" 1..2048 ASCII hex-values (optionally separated by '.')\n"
"\n"
"Examples:\n"
" 5A1#11.2233.44556677.88 / 123#DEADBEEF / 5AA# / 123##1 / 213##311223344 /\n"
" 1F334455#1122334455667788_B / 123#R / 00000123#R3 / 333#R8_E\n"
" 1F334455#1122334455667788_B / 123#R / 00000123#R3 / 333#R8_E /\n"
" 45123#81:00:12345678#11223344.556677 / 00242#81:07:40000123#112233\n"
"\n",
prg, prg);
}
@ -92,9 +108,12 @@ int main(int argc, char **argv)
int s; /* can raw socket */
int required_mtu;
int mtu;
int enable_canfd = 1;
int enable_canfx = 1;
struct sockaddr_can addr;
struct canfd_frame frame;
struct can_raw_vcid_options vcid_opts = {
.flags = CAN_RAW_XL_VCID_TX_PASS,
};
static cu_t cu;
struct ifreq ifr;
/* check command line options */
@ -104,7 +123,7 @@ int main(int argc, char **argv)
}
/* parse CAN frame */
required_mtu = parse_canframe(argv[2], &frame);
required_mtu = parse_canframe(argv[2], &cu);
if (!required_mtu) {
fprintf(stderr, "\nWrong CAN-frame format!\n\n");
print_usage(argv[0]);
@ -137,21 +156,38 @@ int main(int argc, char **argv)
}
mtu = ifr.ifr_mtu;
if (mtu != CANFD_MTU && mtu != CANXL_MTU) {
printf("CAN interface is only Classical CAN capable - sorry.\n");
return 1;
}
if (mtu == CANFD_MTU) {
/* interface is ok - try to switch the socket into CAN FD mode */
if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_FD_FRAMES,
&enable_canfd, sizeof(enable_canfd))){
&enable_canfx, sizeof(enable_canfx))){
printf("error when enabling CAN FD support\n");
return 1;
}
}
if (mtu >= CANXL_MIN_MTU) {
/* interface is ok - try to switch the socket into CAN XL mode */
if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_XL_FRAMES,
&enable_canfx, sizeof(enable_canfx))){
printf("error when enabling CAN XL support\n");
return 1;
}
/* try to enable the CAN XL VCID pass through mode */
if (setsockopt(s, SOL_CAN_RAW, CAN_RAW_XL_VCID_OPTS,
&vcid_opts, sizeof(vcid_opts))) {
printf("error when enabling CAN XL VCID pass through\n");
return 1;
}
}
}
/* ensure discrete CAN FD length values 0..8, 12, 16, 20, 24, 32, 64 */
frame.len = can_fd_dlc2len(can_fd_len2dlc(frame.len));
}
if (required_mtu == CANFD_MTU)
cu.fd.len = can_fd_dlc2len(can_fd_len2dlc(cu.fd.len));
/* CAN XL frames need real frame length for sending */
if (required_mtu == CANXL_MTU)
required_mtu = CANXL_HDR_SIZE + cu.xl.len;
/*
* disable default receive filter on this RAW socket This is
@ -167,7 +203,7 @@ int main(int argc, char **argv)
}
/* send frame */
if (write(s, &frame, required_mtu) != required_mtu) {
if (write(s, &cu, required_mtu) != required_mtu) {
perror("write");
return 1;
}

394
lib.c
View File

@ -55,6 +55,7 @@
#define CANID_DELIM '#'
#define CC_DLC_DELIM '_'
#define XL_HDR_DELIM ':'
#define DATA_SEPERATOR '.'
const char hex_asc_upper[] = "0123456789ABCDEF";
@ -153,77 +154,126 @@ int hexstring2data(char *arg, unsigned char *data, int maxdlen)
return 0;
}
int parse_canframe(char *cs, struct canfd_frame *cf)
int parse_canframe(char *cs, cu_t *cu)
{
/* documentation see lib.h */
int i, idx, dlen, len;
int maxdlen = CAN_MAX_DLEN;
int ret = CAN_MTU;
int mtu = CAN_MTU;
__u8 *data = cu->fd.data; /* fill CAN CC/FD data by default */
canid_t tmp;
len = strlen(cs);
//printf("'%s' len %d\n", cs, len);
memset(cf, 0, sizeof(*cf)); /* init CAN FD frame, e.g. LEN = 0 */
memset(cu, 0, sizeof(*cu)); /* init CAN CC/FD/XL frame, e.g. LEN = 0 */
if (len < 4)
return 0;
if (cs[3] == CANID_DELIM) { /* 3 digits */
if (cs[3] == CANID_DELIM) { /* 3 digits SFF */
idx = 4;
for (i = 0; i < 3; i++) {
if ((tmp = asc2nibble(cs[i])) > 0x0F)
return 0;
cf->can_id |= (tmp << (2 - i) * 4);
cu->cc.can_id |= tmp << (2 - i) * 4;
}
} else if (cs[8] == CANID_DELIM) { /* 8 digits */
} else if (cs[5] == CANID_DELIM) { /* 5 digits CAN XL VCID/PRIO*/
idx = 6;
for (i = 0; i < 5; i++) {
if ((tmp = asc2nibble(cs[i])) > 0x0F)
return 0;
cu->xl.prio |= tmp << (4 - i) * 4;
}
/* the VCID starts at bit position 16 */
tmp = (cu->xl.prio << 4) & CANXL_VCID_MASK;
cu->xl.prio &= CANXL_PRIO_MASK;
cu->xl.prio |= tmp;
} else if (cs[8] == CANID_DELIM) { /* 8 digits EFF */
idx = 9;
for (i = 0; i < 8; i++) {
if ((tmp = asc2nibble(cs[i])) > 0x0F)
return 0;
cf->can_id |= (tmp << (7 - i) * 4);
cu->cc.can_id |= tmp << (7 - i) * 4;
}
if (!(cf->can_id & CAN_ERR_FLAG)) /* 8 digits but no errorframe? */
cf->can_id |= CAN_EFF_FLAG; /* then it is an extended frame */
if (!(cu->cc.can_id & CAN_ERR_FLAG)) /* 8 digits but no errorframe? */
cu->cc.can_id |= CAN_EFF_FLAG; /* then it is an extended frame */
} else
return 0;
if ((cs[idx] == 'R') || (cs[idx] == 'r')) { /* RTR frame */
cf->can_id |= CAN_RTR_FLAG;
cu->cc.can_id |= CAN_RTR_FLAG;
/* check for optional DLC value for CAN 2.0B frames */
if (cs[++idx] && (tmp = asc2nibble(cs[idx++])) <= CAN_MAX_DLEN) {
cf->len = tmp;
cu->cc.len = tmp;
/* check for optional raw DLC value for CAN 2.0B frames */
if ((tmp == CAN_MAX_DLEN) && (cs[idx++] == CC_DLC_DELIM)) {
tmp = asc2nibble(cs[idx]);
if ((tmp > CAN_MAX_DLEN) && (tmp <= CAN_MAX_RAW_DLC)) {
struct can_frame *ccf = (struct can_frame *)cf;
ccf->len8_dlc = tmp;
if ((tmp > CAN_MAX_DLEN) && (tmp <= CAN_MAX_RAW_DLC))
cu->cc.len8_dlc = tmp;
}
}
}
return ret;
return mtu;
}
if (cs[idx] == CANID_DELIM) { /* CAN FD frame escape char '##' */
maxdlen = CANFD_MAX_DLEN;
ret = CANFD_MTU;
mtu = CANFD_MTU;
/* CAN FD frame <canid>##<flags><data>* */
if ((tmp = asc2nibble(cs[idx + 1])) > 0x0F)
return 0;
cf->flags = tmp;
cu->fd.flags = tmp;
cu->fd.flags |= CANFD_FDF; /* dual-use */
idx += 2;
} else if (cs[idx + 14] == CANID_DELIM) { /* CAN XL frame '#80:00:11223344#' */
maxdlen = CANXL_MAX_DLEN;
mtu = CANXL_MTU;
data = cu->xl.data; /* fill CAN XL data */
if ((cs[idx + 2] != XL_HDR_DELIM) || (cs[idx + 5] != XL_HDR_DELIM))
return 0;
if ((tmp = asc2nibble(cs[idx++])) > 0x0F)
return 0;
cu->xl.flags = tmp << 4;
if ((tmp = asc2nibble(cs[idx++])) > 0x0F)
return 0;
cu->xl.flags |= tmp;
/* force CAN XL flag if it was missing in the ASCII string */
cu->xl.flags |= CANXL_XLF;
idx++; /* skip XL_HDR_DELIM */
if ((tmp = asc2nibble(cs[idx++])) > 0x0F)
return 0;
cu->xl.sdt = tmp << 4;
if ((tmp = asc2nibble(cs[idx++])) > 0x0F)
return 0;
cu->xl.sdt |= tmp;
idx++; /* skip XL_HDR_DELIM */
for (i = 0; i < 8; i++) {
if ((tmp = asc2nibble(cs[idx++])) > 0x0F)
return 0;
cu->xl.af |= tmp << (7 - i) * 4;
}
idx++; /* skip CANID_DELIM */
}
for (i = 0, dlen = 0; i < maxdlen; i++) {
@ -235,102 +285,141 @@ int parse_canframe(char *cs, struct canfd_frame *cf)
if ((tmp = asc2nibble(cs[idx++])) > 0x0F)
return 0;
cf->data[i] = (tmp << 4);
data[i] = tmp << 4;
if ((tmp = asc2nibble(cs[idx++])) > 0x0F)
return 0;
cf->data[i] |= tmp;
data[i] |= tmp;
dlen++;
}
cf->len = dlen;
if (mtu == CANXL_MTU)
cu->xl.len = dlen;
else
cu->fd.len = dlen;
/* check for extra DLC when having a Classic CAN with 8 bytes payload */
if ((maxdlen == CAN_MAX_DLEN) && (dlen == CAN_MAX_DLEN) && (cs[idx++] == CC_DLC_DELIM)) {
unsigned char dlc = asc2nibble(cs[idx]);
if ((dlc > CAN_MAX_DLEN) && (dlc <= CAN_MAX_RAW_DLC)) {
struct can_frame *ccf = (struct can_frame *)cf;
ccf->len8_dlc = dlc;
}
if ((dlc > CAN_MAX_DLEN) && (dlc <= CAN_MAX_RAW_DLC))
cu->cc.len8_dlc = dlc;
}
return ret;
return mtu;
}
void fprint_canframe(FILE *stream, struct canfd_frame *cf, char *eol, int sep, int maxdlen)
{
/* documentation see lib.h */
char buf[CL_CFSZ]; /* max length */
sprint_canframe(buf, cf, sep, maxdlen);
fprintf(stream, "%s", buf);
if (eol)
fprintf(stream, "%s", eol);
}
void sprint_canframe(char *buf, struct canfd_frame *cf, int sep, int maxdlen)
int snprintf_canframe(char *buf, size_t size, cu_t *cu, int sep)
{
/* documentation see lib.h */
unsigned char is_canfd = cu->fd.flags;
int i, offset;
int len = (cf->len > maxdlen) ? maxdlen : cf->len;
int len;
if (cf->can_id & CAN_ERR_FLAG) {
put_eff_id(buf, cf->can_id & (CAN_ERR_MASK | CAN_ERR_FLAG));
/* ensure space for string termination */
if (size < 1)
return size;
/* handle CAN XL frames */
if (cu->xl.flags & CANXL_XLF) {
len = cu->xl.len;
/* check if the CAN frame fits into the provided buffer */
if (sizeof("00123#11:22:12345678#") + 2 * len + (sep ? len : 0) > size - 1) {
/* mark buffer overflow in output */
memset(buf, '-', size - 1);
buf[size - 1] = 0;
return size;
}
/* print prio and CAN XL header content */
offset = sprintf(buf, "%02X%03X#%02X:%02X:%08X#",
(canid_t)(cu->xl.prio & CANXL_VCID_MASK) >> CANXL_VCID_OFFSET,
(canid_t)(cu->xl.prio & CANXL_PRIO_MASK),
cu->xl.flags, cu->xl.sdt, cu->xl.af);
/* data */
for (i = 0; i < len; i++) {
put_hex_byte(buf + offset, cu->xl.data[i]);
offset += 2;
if (sep && (i + 1 < len))
buf[offset++] = '.';
}
buf[offset] = 0;
return offset;
}
/* handle CAN CC/FD frames - ensure max length values */
if (is_canfd)
len = (cu->fd.len > CANFD_MAX_DLEN) ? CANFD_MAX_DLEN : cu->fd.len;
else
len = (cu->fd.len > CAN_MAX_DLEN) ? CAN_MAX_DLEN : cu->fd.len;
/* check if the CAN frame fits into the provided buffer */
if (sizeof("12345678#_F") + 2 * len + (sep ? len : 0) + \
(cu->fd.can_id & CAN_RTR_FLAG ? 2 : 0) > size - 1) {
/* mark buffer overflow in output */
memset(buf, '-', size - 1);
buf[size - 1] = 0;
return size;
}
if (cu->fd.can_id & CAN_ERR_FLAG) {
put_eff_id(buf, cu->fd.can_id & (CAN_ERR_MASK | CAN_ERR_FLAG));
buf[8] = '#';
offset = 9;
} else if (cf->can_id & CAN_EFF_FLAG) {
put_eff_id(buf, cf->can_id & CAN_EFF_MASK);
} else if (cu->fd.can_id & CAN_EFF_FLAG) {
put_eff_id(buf, cu->fd.can_id & CAN_EFF_MASK);
buf[8] = '#';
offset = 9;
} else {
put_sff_id(buf, cf->can_id & CAN_SFF_MASK);
put_sff_id(buf, cu->fd.can_id & CAN_SFF_MASK);
buf[3] = '#';
offset = 4;
}
/* standard CAN frames may have RTR enabled. There are no ERR frames with RTR */
if (maxdlen == CAN_MAX_DLEN && cf->can_id & CAN_RTR_FLAG) {
/* CAN CC frames may have RTR enabled. There are no ERR frames with RTR */
if (!is_canfd && cu->fd.can_id & CAN_RTR_FLAG) {
buf[offset++] = 'R';
/* print a given CAN 2.0B DLC if it's not zero */
if (cf->len && cf->len <= CAN_MAX_DLEN) {
buf[offset++] = hex_asc_upper_lo(cf->len);
if (len && len <= CAN_MAX_DLEN) {
buf[offset++] = hex_asc_upper_lo(cu->fd.len);
/* check for optional raw DLC value for CAN 2.0B frames */
if (cf->len == CAN_MAX_DLEN) {
struct can_frame *ccf = (struct can_frame *)cf;
if ((ccf->len8_dlc > CAN_MAX_DLEN) && (ccf->len8_dlc <= CAN_MAX_RAW_DLC)) {
if (len == CAN_MAX_DLEN) {
if ((cu->cc.len8_dlc > CAN_MAX_DLEN) && (cu->cc.len8_dlc <= CAN_MAX_RAW_DLC)) {
buf[offset++] = CC_DLC_DELIM;
buf[offset++] = hex_asc_upper_lo(ccf->len8_dlc);
buf[offset++] = hex_asc_upper_lo(cu->cc.len8_dlc);
}
}
}
buf[offset] = 0;
return;
return offset;
}
if (maxdlen == CANFD_MAX_DLEN) {
/* any CAN FD flags */
if (is_canfd) {
/* add CAN FD specific escape char and flags */
buf[offset++] = '#';
buf[offset++] = hex_asc_upper_lo(cf->flags);
buf[offset++] = hex_asc_upper_lo(cu->fd.flags);
if (sep && len)
buf[offset++] = '.';
}
/* data */
for (i = 0; i < len; i++) {
put_hex_byte(buf + offset, cf->data[i]);
put_hex_byte(buf + offset, cu->fd.data[i]);
offset += 2;
if (sep && (i + 1 < len))
buf[offset++] = '.';
}
/* check for extra DLC when having a Classic CAN with 8 bytes payload */
if ((maxdlen == CAN_MAX_DLEN) && (len == CAN_MAX_DLEN)) {
struct can_frame *ccf = (struct can_frame *)cf;
unsigned char dlc = ccf->len8_dlc;
if (!is_canfd && (len == CAN_MAX_DLEN)) {
unsigned char dlc = cu->cc.len8_dlc;
if ((dlc > CAN_MAX_DLEN) && (dlc <= CAN_MAX_RAW_DLC)) {
buf[offset++] = CC_DLC_DELIM;
@ -339,55 +428,130 @@ void sprint_canframe(char *buf, struct canfd_frame *cf, int sep, int maxdlen)
}
buf[offset] = 0;
return offset;
}
void fprint_long_canframe(FILE *stream, struct canfd_frame *cf, char *eol, int view, int maxdlen)
int snprintf_long_canframe(char *buf, size_t size, cu_t *cu, int view)
{
/* documentation see lib.h */
char buf[CL_LONGCFSZ];
unsigned char is_canfd = cu->fd.flags;
int i, j, dlen, offset, maxsize;
int len;
sprint_long_canframe(buf, cf, view, maxdlen);
fprintf(stream, "%s", buf);
if ((view & CANLIB_VIEW_ERROR) && (cf->can_id & CAN_ERR_FLAG)) {
snprintf_can_error_frame(buf, sizeof(buf), cf, "\n\t");
fprintf(stream, "\n\t%s", buf);
}
if (eol)
fprintf(stream, "%s", eol);
/* ensure space for string termination */
if (size < 1)
return size;
/* handle CAN XL frames */
if (cu->xl.flags & CANXL_XLF) {
len = cu->xl.len;
/* crop to CANFD_MAX_DLEN */
if (len > CANFD_MAX_DLEN)
dlen = CANFD_MAX_DLEN;
else
dlen = len;
/* check if the CAN frame fits into the provided buffer */
if (sizeof(".....123 [2048] (00|11:22:12345678) ...") + 3 * dlen > size - 1) {
/* mark buffer overflow in output */
memset(buf, '-', size - 1);
buf[size - 1] = 0;
return size;
}
void sprint_long_canframe(char *buf, struct canfd_frame *cf, int view, int maxdlen)
{
/* documentation see lib.h */
if (view & CANLIB_VIEW_INDENT_SFF) {
memset(buf, ' ', 5);
put_sff_id(buf + 5, cu->xl.prio & CANXL_PRIO_MASK);
offset = 8;
} else {
put_sff_id(buf, cu->xl.prio & CANXL_PRIO_MASK);
offset = 3;
}
int i, j, dlen, offset;
int len = (cf->len > maxdlen) ? maxdlen : cf->len;
/* print prio and CAN XL header content */
offset += sprintf(buf + offset, " [%04d] (%02X|%02X:%02X:%08X) ",
len,
(canid_t)(cu->xl.prio & CANXL_VCID_MASK) >> CANXL_VCID_OFFSET,
cu->xl.flags, cu->xl.sdt, cu->xl.af);
for (i = 0; i < dlen; i++) {
put_hex_byte(buf + offset, cu->xl.data[i]);
offset += 2;
if (i + 1 < dlen)
buf[offset++] = ' ';
}
/* indicate cropped output */
if (cu->xl.len > dlen)
offset += sprintf(buf + offset, " ...");
buf[offset] = 0;
return offset;
}
/* ensure max length values */
if (is_canfd)
len = (cu->fd.len > CANFD_MAX_DLEN) ? CANFD_MAX_DLEN : cu->fd.len;
else
len = (cu->fd.len > CAN_MAX_DLEN) ? CAN_MAX_DLEN : cu->fd.len;
/* check if the CAN frame fits into the provided buffer */
maxsize = sizeof("12345678 [12] ");
if (view & CANLIB_VIEW_BINARY)
dlen = 9; /* _10101010 */
else
dlen = 3; /* _AA */
if (cu->fd.can_id & CAN_RTR_FLAG) {
maxsize += sizeof(" remote request");
} else {
maxsize += len * dlen;
if (len <= CAN_MAX_DLEN) {
if (cu->fd.can_id & CAN_ERR_FLAG) {
maxsize += sizeof(" ERRORFRAME");
maxsize += (8 - len) * dlen;
} else if (view & CANLIB_VIEW_ASCII) {
maxsize += sizeof(" 'a.b.CDEF'");
maxsize += (8 - len) * dlen;
}
}
}
if (maxsize > size - 1) {
/* mark buffer overflow in output */
memset(buf, '-', size - 1);
buf[size - 1] = 0;
return size;
}
/* initialize space for CAN-ID and length information */
memset(buf, ' ', 15);
if (cf->can_id & CAN_ERR_FLAG) {
put_eff_id(buf, cf->can_id & (CAN_ERR_MASK | CAN_ERR_FLAG));
if (cu->cc.can_id & CAN_ERR_FLAG) {
put_eff_id(buf, cu->cc.can_id & (CAN_ERR_MASK | CAN_ERR_FLAG));
offset = 10;
} else if (cf->can_id & CAN_EFF_FLAG) {
put_eff_id(buf, cf->can_id & CAN_EFF_MASK);
} else if (cu->fd.can_id & CAN_EFF_FLAG) {
put_eff_id(buf, cu->fd.can_id & CAN_EFF_MASK);
offset = 10;
} else {
if (view & CANLIB_VIEW_INDENT_SFF) {
put_sff_id(buf + 5, cf->can_id & CAN_SFF_MASK);
put_sff_id(buf + 5, cu->fd.can_id & CAN_SFF_MASK);
offset = 10;
} else {
put_sff_id(buf, cf->can_id & CAN_SFF_MASK);
put_sff_id(buf, cu->fd.can_id & CAN_SFF_MASK);
offset = 5;
}
}
/* The len value is sanitized by maxdlen (see above) */
if (maxdlen == CAN_MAX_DLEN) {
/* The len value is sanitized (see above) */
if (!is_canfd) {
if (view & CANLIB_VIEW_LEN8_DLC) {
struct can_frame *ccf = (struct can_frame *)cf;
unsigned char dlc = ccf->len8_dlc;
unsigned char dlc = cu->cc.len8_dlc;
/* fall back to len if we don't have a valid DLC > 8 */
if (!((len == CAN_MAX_DLEN) && (dlc > CAN_MAX_DLEN) &&
@ -404,9 +568,9 @@ void sprint_long_canframe(char *buf, struct canfd_frame *cf, int view, int maxdl
}
/* standard CAN frames may have RTR enabled */
if (cf->can_id & CAN_RTR_FLAG) {
sprintf(buf + offset + 5, " remote request");
return;
if (cu->fd.can_id & CAN_RTR_FLAG) {
offset += sprintf(buf + offset + 5, " remote request");
return offset + 5;
}
} else {
buf[offset] = '[';
@ -417,22 +581,22 @@ void sprint_long_canframe(char *buf, struct canfd_frame *cf, int view, int maxdl
offset += 5;
if (view & CANLIB_VIEW_BINARY) {
dlen = 9; /* _10101010 */
/* _10101010 - dlen = 9, see above */
if (view & CANLIB_VIEW_SWAP) {
for (i = len - 1; i >= 0; i--) {
buf[offset++] = (i == len - 1) ? ' ' : SWAP_DELIMITER;
for (j = 7; j >= 0; j--)
buf[offset++] = (1 << j & cf->data[i]) ? '1' : '0';
buf[offset++] = (1 << j & cu->fd.data[i]) ? '1' : '0';
}
} else {
for (i = 0; i < len; i++) {
buf[offset++] = ' ';
for (j = 7; j >= 0; j--)
buf[offset++] = (1 << j & cf->data[i]) ? '1' : '0';
buf[offset++] = (1 << j & cu->fd.data[i]) ? '1' : '0';
}
}
} else {
dlen = 3; /* _AA */
/* _AA - dlen = 3, see above */
if (view & CANLIB_VIEW_SWAP) {
for (i = len - 1; i >= 0; i--) {
if (i == len - 1)
@ -440,13 +604,13 @@ void sprint_long_canframe(char *buf, struct canfd_frame *cf, int view, int maxdl
else
buf[offset++] = SWAP_DELIMITER;
put_hex_byte(buf + offset, cf->data[i]);
put_hex_byte(buf + offset, cu->fd.data[i]);
offset += 2;
}
} else {
for (i = 0; i < len; i++) {
buf[offset++] = ' ';
put_hex_byte(buf + offset, cf->data[i]);
put_hex_byte(buf + offset, cu->fd.data[i]);
offset += 2;
}
}
@ -460,34 +624,36 @@ void sprint_long_canframe(char *buf, struct canfd_frame *cf, int view, int maxdl
* Does it make sense to write 64 ASCII byte behind 64 ASCII HEX data on the console?
*/
if (len > CAN_MAX_DLEN)
return;
return offset;
if (cf->can_id & CAN_ERR_FLAG)
sprintf(buf + offset, "%*s", dlen * (8 - len) + 13, "ERRORFRAME");
if (cu->fd.can_id & CAN_ERR_FLAG)
offset += sprintf(buf + offset, "%*s", dlen * (8 - len) + 13, "ERRORFRAME");
else if (view & CANLIB_VIEW_ASCII) {
j = dlen * (8 - len) + 4;
if (view & CANLIB_VIEW_SWAP) {
sprintf(buf + offset, "%*s", j, "`");
offset += j;
for (i = len - 1; i >= 0; i--)
if ((cf->data[i] > 0x1F) && (cf->data[i] < 0x7F))
buf[offset++] = cf->data[i];
if ((cu->fd.data[i] > 0x1F) && (cu->fd.data[i] < 0x7F))
buf[offset++] = cu->fd.data[i];
else
buf[offset++] = '.';
sprintf(buf + offset, "`");
offset += sprintf(buf + offset, "`");
} else {
sprintf(buf + offset, "%*s", j, "'");
offset += j;
for (i = 0; i < len; i++)
if ((cf->data[i] > 0x1F) && (cf->data[i] < 0x7F))
buf[offset++] = cf->data[i];
if ((cu->fd.data[i] > 0x1F) && (cu->fd.data[i] < 0x7F))
buf[offset++] = cu->fd.data[i];
else
buf[offset++] = '.';
sprintf(buf + offset, "'");
offset += sprintf(buf + offset, "'");
}
}
return offset;
}
static const char *error_classes[] = {
@ -651,7 +817,7 @@ static int snprintf_error_cnt(char *buf, size_t len, const struct canfd_frame *c
return n;
}
void snprintf_can_error_frame(char *buf, size_t len, const struct canfd_frame *cf,
int snprintf_can_error_frame(char *buf, size_t len, const struct canfd_frame *cf,
const char* sep)
{
canid_t class, mask;
@ -659,12 +825,12 @@ void snprintf_can_error_frame(char *buf, size_t len, const struct canfd_frame *c
char *defsep = ",";
if (!(cf->can_id & CAN_ERR_FLAG))
return;
return 0;
class = cf->can_id & CAN_EFF_MASK;
if (class > (1 << ARRAY_SIZE(error_classes))) {
fprintf(stderr, "Error class %#x is invalid\n", class);
return;
return 0;
}
if (!sep)
@ -678,13 +844,15 @@ void snprintf_can_error_frame(char *buf, size_t len, const struct canfd_frame *c
/* Fix for potential buffer overflow https://lgtm.com/rules/1505913226124/ */
tmp_n = snprintf(buf + n, len - n, "%s", sep);
if (tmp_n < 0 || (size_t)tmp_n >= len - n) {
return;
buf[0] = 0; /* empty terminated string */
return 0;
}
n += tmp_n;
}
tmp_n = snprintf(buf + n, len - n, "%s", error_classes[i]);
if (tmp_n < 0 || (size_t)tmp_n >= len - n) {
return;
buf[0] = 0; /* empty terminated string */
return 0;
}
n += tmp_n;
if (mask == CAN_ERR_LOSTARB)
@ -704,6 +872,8 @@ void snprintf_can_error_frame(char *buf, size_t len, const struct canfd_frame *c
n += snprintf(buf + n, len - n, "%serror-counter-tx-rx", sep);
n += snprintf_error_cnt(buf + n, len - n, cf);
}
return n;
}
int64_t timespec_diff_ms(struct timespec *ts1,

88
lib.h
View File

@ -46,6 +46,7 @@
#define CAN_UTILS_LIB_H
#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#ifdef DEBUG
@ -55,17 +56,21 @@ __attribute__((format (printf, 1, 2)))
static inline int pr_debug(const char* fmt, ...) {return 0;}
#endif
/* buffer sizes for CAN frame string representations */
/* CAN CC/FD/XL frame union */
typedef union {
struct can_frame cc;
struct canfd_frame fd;
struct canxl_frame xl;
} cu_t;
#define CL_ID (sizeof("12345678##1"))
#define CL_DATA sizeof(".AA")
#define CL_BINDATA sizeof(".10101010")
/* CAN FD ASCII hex short representation with DATA_SEPERATORs */
#define CL_CFSZ (2*CL_ID + 64*CL_DATA)
/* CAN FD ASCII hex long representation with binary output */
#define CL_LONGCFSZ (2*CL_ID + sizeof(" [255] ") + (64*CL_BINDATA))
/*
* The buffer size for ASCII CAN frame string representations
* covers also the 'long' CAN frame output from sprint_long_canframe()
* including (swapped) binary represetations, timestamps, netdevice names,
* lengths and error message details as the CAN XL data is cropped to 64
* byte (the 'long' CAN frame output is only for display on terminals).
*/
#define AFRSZ 6300 /* 3*2048 (data) + 22 (timestamp) + 18 (netdev) + ID/HDR */
/* CAN DLC to real data length conversion helpers especially for CAN FD */
@ -103,12 +108,12 @@ int hexstring2data(char *arg, unsigned char *data, int maxdlen);
*
*/
struct canfd_frame;
int parse_canframe(char *cs, struct canfd_frame *cf);
int parse_canframe(char *cs, cu_t *cu);
/*
* Transfers a valid ASCII string describing a CAN frame into struct canfd_frame.
* Transfers a valid ASCII string describing a CAN frame into the CAN union
* containing CAN CC/FD/XL structs.
*
* CAN 2.0 frames (aka Classical CAN)
* CAN CC frames (aka Classical CAN, CAN 2.0B)
* - string layout <can_id>#{R{len}|data}{_len8_dlc}
* - {data} has 0 to 8 hex-values that can (optionally) be separated by '.'
* - {len} can take values from 0 to 8 and can be omitted if zero
@ -121,6 +126,16 @@ int parse_canframe(char *cs, struct canfd_frame *cf);
* - {data} has 0 to 64 hex-values that can (optionally) be separated by '.'
* - return value on successful parsing: CANFD_MTU
*
* CAN XL frames
* - string layout <vcid><prio>#<flags>:<sdt>:<af>#{data}
* - <vcid> a two ASCII Hex value (00 .. FF) which defines the VCID
* - <prio> a three ASCII Hex value (000 .. 7FF) which defines the 11 bit PRIO
* - <flags> a two ASCII Hex value (00 .. FF) which defines canxl_frame.flags
* - <sdt> a two ASCII Hex value (00 .. FF) which defines canxl_frame.sdt
* - <af> a 8 digit ASCII Hex value which defines the 32 bit canxl_frame.af
* - {data} has 1 to 2048 hex-values that can (optionally) be separated by '.'
* - return value on successful parsing: CANXL_MTU
*
* Return value on detected problems: 0
*
* <can_id> can have 3 (standard frame format) or 8 (extended frame format)
@ -151,6 +166,9 @@ int parse_canframe(char *cs, struct canfd_frame *cf);
* ^^
* CAN FD extension to handle the canfd_frame.flags content
*
* 45123#81:00:12345678#11223344.556677 -> CAN XL frame with len = 7,
* VCID = 0x45, PRIO = 0x123, flags = 0x81, sdt = 0x00, af = 0x12345678
*
* Simple facts on this compact ASCII CAN frame representation:
*
* - 3 digits: standard frame format
@ -160,15 +178,16 @@ int parse_canframe(char *cs, struct canfd_frame *cf);
* - CAN FD frames do not have a RTR bit
*/
void fprint_canframe(FILE *stream , struct canfd_frame *cf, char *eol, int sep, int maxdlen);
void sprint_canframe(char *buf , struct canfd_frame *cf, int sep, int maxdlen);
int snprintf_canframe(char *buf, size_t size, cu_t *cu, int sep);
/*
* Creates a CAN frame hexadecimal output in compact format.
* The CAN data[] is separated by '.' when sep != 0.
*
* The type of the CAN frame (CAN 2.0 / CAN FD) is specified by maxdlen:
* maxdlen = 8 -> CAN2.0 frame (aka Classical CAN)
* maxdlen = 64 -> CAN FD frame
* A CAN XL frame is detected when CANXL_XLF is set in the struct
* cu.canxl_frame.flags. Otherwise the type of the CAN frame (CAN CC/FD)
* is specified by the dual-use struct cu.canfd_frame.flags element:
* w/o CAN FD flags (== 0) -> CAN CC frame (aka Classical CAN, CAN2.0B)
* with CAN FD flags (!= 0) -> CAN FD frame (with CANFD_[FDF/BRS/ESI])
*
* 12345678#112233 -> extended CAN-Id = 0x12345678, len = 3, data, sep = 0
* 123#1122334455667788_E -> standard CAN-Id = 0x123, len = 8, dlc = 14, data, sep = 0
@ -178,11 +197,8 @@ void sprint_canframe(char *buf , struct canfd_frame *cf, int sep, int maxdlen);
* 32345678#112233 -> error frame with CAN_ERR_FLAG (0x2000000) set
* 123##0112233 -> CAN FD frame standard CAN-Id = 0x123, flags = 0, len = 3
* 123##2112233 -> CAN FD frame, flags = CANFD_ESI, len = 3
*
* Examples:
*
* fprint_canframe(stdout, &frame, "\n", 0); // with eol to STDOUT
* fprint_canframe(stderr, &frame, NULL, 0); // no eol to STDERR
* 45123#81:00:12345678#11223344.556677 -> CAN XL frame with len = 7,
* VCID = 0x45, PRIO = 0x123, flags = 0x81, sdt = 0x00, af = 0x12345678
*
*/
@ -195,14 +211,15 @@ void sprint_canframe(char *buf , struct canfd_frame *cf, int sep, int maxdlen);
#define SWAP_DELIMITER '`'
void fprint_long_canframe(FILE *stream , struct canfd_frame *cf, char *eol, int view, int maxdlen);
void sprint_long_canframe(char *buf , struct canfd_frame *cf, int view, int maxdlen);
int snprintf_long_canframe(char *buf, size_t size, cu_t *cu, int view);
/*
* Creates a CAN frame hexadecimal output in user readable format.
*
* The type of the CAN frame (CAN 2.0 / CAN FD) is specified by maxdlen:
* maxdlen = 8 -> CAN2.0 frame (aka Classical CAN)
* maxdlen = 64 -> CAN FD frame
* A CAN XL frame is detected when CANXL_XLF is set in the struct
* cu.canxl_frame.flags. Otherwise the type of the CAN frame (CAN CC/FD)
* is specified by the dual-use struct cu.canfd_frame.flags element:
* w/o CAN FD flags (== 0) -> CAN CC frame (aka Classical CAN, CAN2.0B)
* with CAN FD flags (!= 0) -> CAN FD frame (with CANFD_[FDF/BRS/ESI])
*
* 12345678 [3] 11 22 33 -> extended CAN-Id = 0x12345678, len = 3, data
* 12345678 [0] remote request -> extended CAN-Id = 0x12345678, RTR
@ -210,21 +227,16 @@ void sprint_long_canframe(char *buf , struct canfd_frame *cf, int view, int maxd
* 321 {B} 11 22 33 44 55 66 77 88 -> Classical CAN with raw '{DLC}' value B
* 20001111 [7] C6 23 7B 32 69 98 3C ERRORFRAME -> (CAN_ERR_FLAG set)
* 12345678 [03] 11 22 33 -> CAN FD with extended CAN-Id = 0x12345678, len = 3
* 123 [0003] (45|81:00:12345678) 11 22 33 -> CAN XL frame with VCID 0x45
*
* 123 [3] 11 22 33 -> CANLIB_VIEW_INDENT_SFF == 0
* 123 [3] 11 22 33 -> CANLIB_VIEW_INDENT_SFF == set
*
* Examples:
*
* // CAN FD frame with eol to STDOUT
* fprint_long_canframe(stdout, &frame, "\n", 0, CANFD_MAX_DLEN);
*
* // Classical CAN 2.0 frame without eol to STDERR
* fprint_long_canframe(stderr, &frame, NULL, 0, CAN_MAX_DLEN);
*
* There are no binary or ASCII view modes for CAN XL and the number of displayed
* data bytes is limited to 64 to fit terminal output use-cases.
*/
void snprintf_can_error_frame(char *buf, size_t len, const struct canfd_frame *cf,
int snprintf_can_error_frame(char *buf, size_t len, const struct canfd_frame *cf,
const char *sep);
/*
* Creates a CAN error frame output in user readable format.

53
log2asc.c
View File

@ -54,11 +54,9 @@
#include "lib.h"
#define BUFSZ 400 /* for one line in the logfile */
extern int optind, opterr, optopt;
void print_usage(char *prg)
static void print_usage(char *prg)
{
fprintf(stderr, "%s - convert compact CAN frame logfile to ASC logfile.\n", prg);
fprintf(stderr, "Usage: %s <options> [can-interfaces]\n", prg);
@ -71,7 +69,8 @@ void print_usage(char *prg)
fprintf(stderr, " -r (suppress dlc for RTR frames - pre v8.5 tools)\n");
}
void can_asc(struct canfd_frame *cfd, int devno, int nortrdlc, char *extra_info, FILE *outfile)
static void can_asc(struct canfd_frame *cfd, int devno, int nortrdlc,
char *extra_info, FILE *outfile)
{
int i;
char id[10];
@ -118,7 +117,8 @@ void can_asc(struct canfd_frame *cfd, int devno, int nortrdlc, char *extra_info,
}
}
void canfd_asc(struct canfd_frame *cf, int devno, int mtu, char *extra_info, FILE *outfile)
static void canfd_asc(struct canfd_frame *cf, int devno, int mtu,
char *extra_info, FILE *outfile)
{
int i;
char id[10];
@ -181,11 +181,27 @@ void canfd_asc(struct canfd_frame *cf, int devno, int mtu, char *extra_info, FIL
fprintf(outfile, " %8d %4d %8X 0 0 0 0 0", 130000, 130, flags);
}
#define DEVSZ 22
#define EXTRASZ 20
#define TIMESZ sizeof("(1345212884.318850) ")
#define BUFSZ (DEVSZ + AFRSZ + EXTRASZ + TIMESZ)
/* adapt sscanf() functions below on error */
#if (AFRSZ != 6300)
#error "AFRSZ value does not fit sscanf restrictions!"
#endif
#if (DEVSZ != 22)
#error "DEVSZ value does not fit sscanf restrictions!"
#endif
#if (EXTRASZ != 20)
#error "EXTRASZ value does not fit sscanf restrictions!"
#endif
int main(int argc, char **argv)
{
static char buf[BUFSZ], device[BUFSZ], ascframe[BUFSZ], extra_info[BUFSZ];
static char buf[BUFSZ], device[DEVSZ], afrbuf[AFRSZ], extra_info[EXTRASZ];
struct canfd_frame cf;
static cu_t cu;
static struct timeval tv, start_tv;
FILE *infile = stdin;
FILE *outfile = stdout;
@ -261,14 +277,14 @@ int main(int argc, char **argv)
if (buf[0] != '(')
continue;
if (sscanf(buf, "(%llu.%llu) %s %s %s", &sec, &usec,
device, ascframe, extra_info) != 5) {
if (sscanf(buf, "(%llu.%llu) %21s %6299s %19s", &sec, &usec,
device, afrbuf, extra_info) != 5) {
/* do not evaluate the extra info */
extra_info[0] = 0;
if (sscanf(buf, "(%llu.%llu) %s %s", &sec, &usec,
device, ascframe) != 4) {
if (sscanf(buf, "(%llu.%llu) %21s %6299s", &sec, &usec,
device, afrbuf) != 4) {
fprintf(stderr, "incorrect line format in logfile\n");
return 1;
}
@ -294,12 +310,17 @@ int main(int argc, char **argv)
}
if (devno) { /* only convert for selected CAN devices */
mtu = parse_canframe(ascframe, &cf);
if ((mtu != CAN_MTU) && (mtu != CANFD_MTU))
mtu = parse_canframe(afrbuf, &cu);
/* convert only CAN CC and CAN FD frames */
if ((mtu != CAN_MTU) && (mtu != CANFD_MTU)) {
printf("no valid CAN CC/FD frame\n");
return 1;
}
/* we don't support error message frames in CAN FD */
if ((mtu == CANFD_MTU) && (cf.can_id & CAN_ERR_FLAG))
if ((mtu == CANFD_MTU) && (cu.cc.can_id & CAN_ERR_FLAG))
continue;
tv.tv_sec = tv.tv_sec - start_tv.tv_sec;
@ -315,9 +336,9 @@ int main(int argc, char **argv)
fprintf(outfile, "%4llu.%06llu ", (unsigned long long)tv.tv_sec, (unsigned long long)tv.tv_usec);
if ((mtu == CAN_MTU) && (fdfmt == 0))
can_asc(&cf, devno, nortrdlc, extra_info, outfile);
can_asc(&cu.fd, devno, nortrdlc, extra_info, outfile);
else
canfd_asc(&cf, devno, mtu, extra_info, outfile);
canfd_asc(&cu.fd, devno, mtu, extra_info, outfile);
if (crlf)
fprintf(outfile, "\r");

57
log2long.c
View File

@ -43,40 +43,61 @@
*/
#include <stdio.h>
#include <string.h>
#include <linux/can.h>
#include <net/if.h>
#include "lib.h"
#define COMMENTSZ 200
#define BUFSZ (sizeof("(1345212884.318850)") + IFNAMSIZ + 4 + CL_CFSZ + COMMENTSZ) /* for one line in the logfile */
#define DEVSZ 22
#define TIMESZ 22 /* sizeof("(1345212884.318850) ") */
#define BUFSZ (DEVSZ + AFRSZ + TIMESZ)
/* adapt sscanf() functions below on error */
#if (AFRSZ != 6300)
#error "AFRSZ value does not fit sscanf restrictions!"
#endif
#if (DEVSZ != 22)
#error "DEVSZ value does not fit sscanf restrictions!"
#endif
#if (TIMESZ != 22)
#error "TIMESZ value does not fit sscanf restrictions!"
#endif
int main(void)
{
char buf[BUFSZ], timestamp[BUFSZ], device[BUFSZ], ascframe[BUFSZ];
struct canfd_frame cf;
int mtu, maxdlen;
static char buf[BUFSZ], timestamp[TIMESZ], device[DEVSZ], afrbuf[AFRSZ];
static cu_t cu;
int mtu;
while (fgets(buf, BUFSZ-1, stdin)) {
if (sscanf(buf, "%s %s %s", timestamp, device, ascframe) != 3)
return 1;
mtu = parse_canframe(ascframe, &cf);
if (mtu == CAN_MTU)
maxdlen = CAN_MAX_DLEN;
else if (mtu == CANFD_MTU)
maxdlen = CANFD_MAX_DLEN;
else {
fprintf(stderr, "read: incomplete CAN frame\n");
if (strlen(buf) >= BUFSZ-2) {
fprintf(stderr, "line too long for input buffer\n");
return 1;
}
sprint_long_canframe(ascframe, &cf,
(CANLIB_VIEW_INDENT_SFF | CANLIB_VIEW_ASCII),
maxdlen); /* with ASCII output */
if (sscanf(buf, "%21s %21s %6299s", timestamp, device, afrbuf) != 3)
return 1;
printf("%s %s %s\n", timestamp, device, ascframe);
mtu = parse_canframe(afrbuf, &cu);
/* mark dual-use struct canfd_frame - no CAN_XL support */
if (mtu == CAN_MTU)
cu.fd.flags = 0;
else if (mtu == CANFD_MTU)
cu.fd.flags |= CANFD_FDF;
else {
fprintf(stderr, "read: no valid CAN CC/FD frame\n");
return 1;
}
/* with ASCII output */
snprintf_long_canframe(afrbuf, sizeof(afrbuf), &cu,
(CANLIB_VIEW_INDENT_SFF | CANLIB_VIEW_ASCII));
printf("%s %s %s\n", timestamp, device, afrbuf);
}
return 0;

7
slcanpty.c
View File

@ -50,7 +50,8 @@
#define DEVICE_NAME_PTMX "/dev/ptmx"
/* read data from pty, send CAN frames to CAN socket and answer commands */
int pty2can(int pty, int socket, struct can_filter *fi, int *is_open, int *tstamp)
static int pty2can(int pty, int socket, struct can_filter *fi,
int *is_open, int *tstamp)
{
unsigned int nbytes;
char cmd;
@ -313,7 +314,7 @@ rx_out:
}
/* read CAN frames from CAN interface and write it to the pty */
int can2pty(int pty, int socket, int *tstamp)
static int can2pty(int pty, int socket, int *tstamp)
{
int nbytes;
char cmd;
@ -365,7 +366,7 @@ int can2pty(int pty, int socket, int *tstamp)
return 0;
}
int check_select_stdin(void)
static int check_select_stdin(void)
{
fd_set rdfs;
struct timeval timeout;