perror("read");
exit(1);
}
- return SEND;
+ return STORE_ONLY;
}
void init_read(struct in_ctx *ctx)
s = CHECK(socket(PF_CAN, SOCK_RAW, CAN_RAW));
+ int rcvbuf = 25000; /* Limit rcvbuf to not have so big queueing latencies */
+ CHECK(setsockopt(s, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf)));
+
if (nonblocking) {
int flags = CHECK(fcntl(s, F_GETFL, 0));
CHECK(fcntl(s, F_SETFL, flags | O_NONBLOCK));
int out_packet_tx(struct out_ctx *ctx, struct can_frame *cf)
{
volatile struct tpacket2_hdr *hdr = ctx->ptr + ctx->current*FRAME_SIZE;
- int ret = -1;
- if (ctx->from_in == NOP)
+ if (ctx->from_in == NOP) {
+ CHECK(send(ctx->s, NULL, 0, 0));
return 0;
-
+ }
while (hdr->tp_status != TP_STATUS_AVAILABLE) {
- struct pollfd pfd = {.fd = ctx->s, .revents = 0,
- .events = POLLIN|POLLRDNORM|POLLERR };
- ret = CHECK(poll(&pfd, 1, -1));
+ CHECK(send(ctx->s, NULL, 0, 0));
}
- (void)ret;
+
//struct sockaddr_ll *addr = (void*)hdr + TPACKET_HDRLEN - sizeof(struct sockaddr_ll);
struct can_frame *cf_mmap = (void*)hdr + TPACKET_HDRLEN - sizeof(struct sockaddr_ll);
*cf_mmap = *cf;
ctx->current = (ctx->current + 1) % FRAME_NR;
if (ctx->from_in == SEND){
- ret = CHECK(send(ctx->s, NULL, 0, 0));
+ CHECK(send(ctx->s, NULL, 0, 0));
return 0;
}
return 0;