597 	__u8			ip_summed:2;  member
2507 	if (skb->ip_summed == CHECKSUM_NONE) {  in skb_add_data()
2590 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_postpull_rcsum()
2592 	else if (skb->ip_summed == CHECKSUM_PARTIAL &&  in skb_postpull_rcsum()
2594 		skb->ip_summed = CHECKSUM_NONE;  in skb_postpull_rcsum()
2612 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in pskb_trim_rcsum()
2613 		skb->ip_summed = CHECKSUM_NONE;  in pskb_trim_rcsum()
2934 	return ((skb->ip_summed == CHECKSUM_UNNECESSARY) ||  in skb_csum_unnecessary()
2936 		(skb->ip_summed == CHECKSUM_PARTIAL &&  in skb_csum_unnecessary()
2964 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_decr_checksum_unnecessary()
2966 			skb->ip_summed = CHECKSUM_NONE;  in __skb_decr_checksum_unnecessary()
2974 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_incr_checksum_unnecessary()
2977 	} else if (skb->ip_summed == CHECKSUM_NONE) {  in __skb_incr_checksum_unnecessary()
2978 		skb->ip_summed = CHECKSUM_UNNECESSARY;  in __skb_incr_checksum_unnecessary()
2993 	if (skb->ip_summed == CHECKSUM_NONE ||  in __skb_mark_checksum_bad()
2994 	    skb->ip_summed == CHECKSUM_UNNECESSARY)  in __skb_mark_checksum_bad()
3029 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_checksum_complete_unset()
3030 		skb->ip_summed = CHECKSUM_NONE;  in skb_checksum_complete_unset()
3046 	if (skb->ip_summed == CHECKSUM_COMPLETE) {  in __skb_checksum_validate_complete()
3113 	return (skb->ip_summed == CHECKSUM_NONE &&  in __skb_checksum_convert_check()
3121 	skb->ip_summed = CHECKSUM_COMPLETE;  in __skb_checksum_convert()
3134 	skb->ip_summed = CHECKSUM_PARTIAL;  in skb_remcsum_adjust_partial()
3154 	 if (unlikely(skb->ip_summed != CHECKSUM_COMPLETE)) {  in skb_remcsum_process()
3400 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_forward_csum()
3401 		skb->ip_summed = CHECKSUM_NONE;  in skb_forward_csum()
3415 	BUG_ON(skb->ip_summed != CHECKSUM_NONE);  in skb_checksum_none_assert()