#define DGM_FLOW_OFF 0x81
#define DGM_FLOW_ON 0x80
#define DGM_CTRL_PKT_SIZE 1
+#define DGM_MTU 1500
static int cfdgml_receive(struct cflayer *layr, struct cfpkt *pkt);
static int cfdgml_transmit(struct cflayer *layr, struct cfpkt *pkt);
}
caif_assert(offsetof(struct cfsrvl, layer) == 0);
memset(dgm, 0, sizeof(struct cfsrvl));
- cfsrvl_init(dgm, channel_id, dev_info);
+ cfsrvl_init(dgm, channel_id, dev_info, true);
dgm->layer.receive = cfdgml_receive;
dgm->layer.transmit = cfdgml_transmit;
snprintf(dgm->layer.name, CAIF_LAYER_NAME_SZ - 1, "dgm%d", channel_id);
if (!cfsrvl_ready(service, &ret))
return ret;
+ /* STE Modem cannot handle more than 1500 bytes datagrams */
+ if (cfpkt_getlen(pkt) > DGM_MTU)
+ return -EMSGSIZE;
+
cfpkt_add_head(pkt, &zero, 4);
/* Add info for MUX-layer to route the packet out. */