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dsig_cansock : Handle non-FD-interfaces correctly #53

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Merged
andoma merged 1 commit into from
May 27, 2026
Merged

dsig_cansock : Handle non-FD-interfaces correctly #53

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28 changes: 19 additions & 9 deletions host/dsig/dsig_cansock.c
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Original file line number Diff line number Diff line change
Expand Up @@ -64,16 +64,26 @@ void
dsig_cansock_tx(void *opaque, uint32_t signal, const void *data, size_t len)
{
dsig_cansock_t *t = opaque;
struct canfd_frame frame;
memset(&frame, 0, sizeof(frame));
frame.can_id = signal;
if(len > sizeof(frame.data))
len = sizeof(frame.data);
frame.len = len;
if(len)
if(len > CANFD_MAX_DLEN)
len = CANFD_MAX_DLEN;
if(len <= CAN_MAX_DLEN) {
struct can_frame frame;
memset(&frame, 0, sizeof(frame));
frame.can_id = signal;
frame.can_dlc = len;
if(len)
memcpy(frame.data, data, len);
ssize_t r = write(t->fd, &frame, sizeof(frame));
(void)r;
} else {
struct canfd_frame frame;
memset(&frame, 0, sizeof(frame));
frame.can_id = signal;
frame.len = len;
memcpy(frame.data, data, len);
ssize_t r = write(t->fd, &frame, sizeof(frame));
(void)r;
ssize_t r = write(t->fd, &frame, sizeof(frame));
(void)r;
}
}

static void *
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