185     uint16_t       offset;  in SendCommand()  local
193     offset = static_cast<uint16_t>(packed);  in SendCommand()
195     SuccessOrExit(error = mSpinelInterface->SendFrame(buffer, offset));  in SendCommand()
196     LogSpinelFrame(buffer, offset, true /* aTx */);  in SendCommand()
211     uint16_t       offset;  in SendCommand()  local
219     offset = static_cast<uint16_t>(packed);  in SendCommand()
224         packed = spinel_datatype_vpack(buffer + offset, sizeof(buffer) - offset, aFormat, aArgs);  in SendCommand()
225 …VerifyOrExit(packed > 0 && static_cast<size_t>(packed + offset) <= sizeof(buffer), error = OT_ERRO…  in SendCommand()
227         offset += static_cast<uint16_t>(packed);  in SendCommand()
230     SuccessOrExit(error = mSpinelInterface->SendFrame(buffer, offset));  in SendCommand()
231     LogSpinelFrame(buffer, offset, true /* aTx */);  in SendCommand()