938 	__u8			ip_summed:2;
3635 	if (skb->ip_summed == CHECKSUM_NONE) {  in skb_add_data()
3710 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in __skb_postpull_rcsum()
3713 	else if (skb->ip_summed == CHECKSUM_PARTIAL &&  in __skb_postpull_rcsum()
3715 		skb->ip_summed = CHECKSUM_NONE;  in __skb_postpull_rcsum()
3731 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_postpull_rcsum()
3734 	else if (skb->ip_summed == CHECKSUM_PARTIAL &&  in skb_postpull_rcsum()
3736 		skb->ip_summed = CHECKSUM_NONE;  in skb_postpull_rcsum()
3743 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in __skb_postpush_rcsum()
3803 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in __skb_trim_rcsum()
3804 		skb->ip_summed = CHECKSUM_NONE;  in __skb_trim_rcsum()
3811 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in __skb_grow_rcsum()
3812 		skb->ip_summed = CHECKSUM_NONE;  in __skb_grow_rcsum()
4316 	return ((skb->ip_summed == CHECKSUM_UNNECESSARY) ||  in skb_csum_unnecessary()
4318 		(skb->ip_summed == CHECKSUM_PARTIAL &&  in skb_csum_unnecessary()
4346 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_decr_checksum_unnecessary()
4348 			skb->ip_summed = CHECKSUM_NONE;  in __skb_decr_checksum_unnecessary()
4356 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_incr_checksum_unnecessary()
4359 	} else if (skb->ip_summed == CHECKSUM_NONE) {  in __skb_incr_checksum_unnecessary()
4360 		skb->ip_summed = CHECKSUM_UNNECESSARY;  in __skb_incr_checksum_unnecessary()
4367 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_reset_checksum_unnecessary()
4368 		skb->ip_summed = CHECKSUM_NONE;  in __skb_reset_checksum_unnecessary()
4404 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_checksum_complete_unset()
4405 		skb->ip_summed = CHECKSUM_NONE;  in skb_checksum_complete_unset()
4421 	if (skb->ip_summed == CHECKSUM_COMPLETE) {  in __skb_checksum_validate_complete()
4485 	return (skb->ip_summed == CHECKSUM_NONE && skb->csum_valid);  in __skb_checksum_convert_check()
4491 	skb->ip_summed = CHECKSUM_COMPLETE;  in __skb_checksum_convert()
4503 	skb->ip_summed = CHECKSUM_PARTIAL;  in skb_remcsum_adjust_partial()
4523 	if (unlikely(skb->ip_summed != CHECKSUM_COMPLETE)) {  in skb_remcsum_process()
4941 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_forward_csum()
4942 		skb->ip_summed = CHECKSUM_NONE;  in skb_forward_csum()
4955 	DEBUG_NET_WARN_ON_ONCE(skb->ip_summed != CHECKSUM_NONE);  in skb_checksum_none_assert()