382 	int index = 0;  in process_ff_sf()  local
389 		if (frame->data[index++] != rctx->rx_addr.ext_addr) {  in process_ff_sf()
409 	switch (frame->data[index] & ISOTP_PCI_TYPE_MASK) {  in process_ff_sf()
432 		sf_len = frame->data[index] & ISOTP_PCI_SF_DL_MASK;  in process_ff_sf()
441 			sf_len = frame->data[index + 1];  in process_ff_sf()
442 			payload_len = index + 2 + sf_len;  in process_ff_sf()
444 			payload_len = index + 1 + sf_len;  in process_ff_sf()
460 	net_buf_add_mem(rctx->buf, &frame->data[index], payload_len - index);  in process_ff_sf()
487 	int index = 0;  in process_cf()  local
492 		if (frame->data[index++] != rctx->rx_addr.ext_addr) {  in process_cf()
497 	if ((frame->data[index] & ISOTP_PCI_TYPE_MASK) != ISOTP_PCI_TYPE_CF) {  in process_cf()
499 			frame->data[index] >> ISOTP_PCI_TYPE_POS);  in process_cf()
507 	if ((frame->data[index++] & ISOTP_PCI_SN_MASK) != rctx->sn_expected++) {  in process_cf()
526 	if (can_dl != rctx->rx_addr.dl && rctx->length > can_dl - index) {  in process_cf()
533 	data_len = MIN(rctx->length, can_dl - index);  in process_cf()
534 	receive_add_mem(rctx, &frame->data[index], data_len);  in process_cf()
899 	int index = 0;  in send_sf()  local
909 		frame.data[index++] = sctx->tx_addr.ext_addr;  in send_sf()
913 	    len > ISOTP_4BIT_SF_MAX_CAN_DL - 1 - index) {  in send_sf()
914 		frame.data[index++] = ISOTP_PCI_TYPE_SF;  in send_sf()
915 		frame.data[index++] = len;  in send_sf()
917 		frame.data[index++] = ISOTP_PCI_TYPE_SF | len;  in send_sf()
920 	if (len > sctx->tx_addr.dl - index) {  in send_sf()
925 	memcpy(&frame.data[index], data, len);  in send_sf()
929 	     len + index > ISOTP_PADDED_FRAME_DL_MIN)) {  in send_sf()
934 			MAX(ISOTP_PADDED_FRAME_DL_MIN, len + index));  in send_sf()
935 		memset(&frame.data[index + len], ISOTP_PAD_BYTE,  in send_sf()
936 		       can_dlc_to_bytes(frame.dlc) - len - index);  in send_sf()
938 		frame.dlc = can_bytes_to_dlc(len + index);  in send_sf()
949 	int index = 0;  in send_ff()  local
959 		frame.data[index++] = sctx->tx_addr.ext_addr;  in send_ff()
963 		frame.data[index++] = ISOTP_PCI_TYPE_FF;  in send_ff()
964 		frame.data[index++] = 0;  in send_ff()
965 		frame.data[index++] = (len >> 3 * 8) & 0xFF;  in send_ff()
966 		frame.data[index++] = (len >> 2 * 8) & 0xFF;  in send_ff()
967 		frame.data[index++] = (len >>   8) & 0xFF;  in send_ff()
968 		frame.data[index++] = len & 0xFF;  in send_ff()
970 		frame.data[index++] = ISOTP_PCI_TYPE_FF | (len >> 8);  in send_ff()
971 		frame.data[index++] = len & 0xFF;  in send_ff()
979 	pull_send_ctx_data(sctx, sctx->tx_addr.dl - index);  in send_ff()
980 	memcpy(&frame.data[index], data, sctx->tx_addr.dl - index);  in send_ff()
989 	int index = 0;  in send_cf()  local
998 		frame.data[index++] = sctx->tx_addr.ext_addr;  in send_cf()
1002 	frame.data[index++] = ISOTP_PCI_TYPE_CF | sctx->sn;  in send_cf()
1005 	len = MIN(rem_len, sctx->tx_addr.dl - index);  in send_cf()
1008 	memcpy(&frame.data[index], data, len);  in send_cf()
1012 	     len + index > ISOTP_PADDED_FRAME_DL_MIN)) {  in send_cf()
1017 			MAX(ISOTP_PADDED_FRAME_DL_MIN, len + index));  in send_cf()
1018 		memset(&frame.data[index + len], ISOTP_PAD_BYTE,  in send_cf()
1019 		       can_dlc_to_bytes(frame.dlc) - len - index);  in send_cf()
1021 		frame.dlc = can_bytes_to_dlc(len + index);  in send_cf()