819 	__u8			ip_summed:2;  member
3328 	if (skb->ip_summed == CHECKSUM_NONE) {  in skb_add_data()
3403 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in __skb_postpull_rcsum()
3406 	else if (skb->ip_summed == CHECKSUM_PARTIAL &&  in __skb_postpull_rcsum()
3408 		skb->ip_summed = CHECKSUM_NONE;  in __skb_postpull_rcsum()
3431 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in __skb_postpush_rcsum()
3491 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in __skb_trim_rcsum()
3492 		skb->ip_summed = CHECKSUM_NONE;  in __skb_trim_rcsum()
3499 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in __skb_grow_rcsum()
3500 		skb->ip_summed = CHECKSUM_NONE;  in __skb_grow_rcsum()
3959 	return ((skb->ip_summed == CHECKSUM_UNNECESSARY) ||  in skb_csum_unnecessary()
3961 		(skb->ip_summed == CHECKSUM_PARTIAL &&  in skb_csum_unnecessary()
3989 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_decr_checksum_unnecessary()
3991 			skb->ip_summed = CHECKSUM_NONE;  in __skb_decr_checksum_unnecessary()
3999 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_incr_checksum_unnecessary()
4002 	} else if (skb->ip_summed == CHECKSUM_NONE) {  in __skb_incr_checksum_unnecessary()
4003 		skb->ip_summed = CHECKSUM_UNNECESSARY;  in __skb_incr_checksum_unnecessary()
4010 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_reset_checksum_unnecessary()
4011 		skb->ip_summed = CHECKSUM_NONE;  in __skb_reset_checksum_unnecessary()
4047 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_checksum_complete_unset()
4048 		skb->ip_summed = CHECKSUM_NONE;  in skb_checksum_complete_unset()
4064 	if (skb->ip_summed == CHECKSUM_COMPLETE) {  in __skb_checksum_validate_complete()
4128 	return (skb->ip_summed == CHECKSUM_NONE && skb->csum_valid);  in __skb_checksum_convert_check()
4134 	skb->ip_summed = CHECKSUM_COMPLETE;  in __skb_checksum_convert()
4146 	skb->ip_summed = CHECKSUM_PARTIAL;  in skb_remcsum_adjust_partial()
4166 	 if (unlikely(skb->ip_summed != CHECKSUM_COMPLETE)) {  in skb_remcsum_process()
4579 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_forward_csum()
4580 		skb->ip_summed = CHECKSUM_NONE;  in skb_forward_csum()
4594 	BUG_ON(skb->ip_summed != CHECKSUM_NONE);  in skb_checksum_none_assert()