623 	__u8			ip_summed:2;  member
2659 	if (skb->ip_summed == CHECKSUM_NONE) {  in skb_add_data()
2742 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_postpull_rcsum()
2744 	else if (skb->ip_summed == CHECKSUM_PARTIAL &&  in skb_postpull_rcsum()
2746 		skb->ip_summed = CHECKSUM_NONE;  in skb_postpull_rcsum()
2764 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_postpush_rcsum()
2781 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in pskb_trim_rcsum()
2782 		skb->ip_summed = CHECKSUM_NONE;  in pskb_trim_rcsum()
3104 	return ((skb->ip_summed == CHECKSUM_UNNECESSARY) ||  in skb_csum_unnecessary()
3106 		(skb->ip_summed == CHECKSUM_PARTIAL &&  in skb_csum_unnecessary()
3134 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_decr_checksum_unnecessary()
3136 			skb->ip_summed = CHECKSUM_NONE;  in __skb_decr_checksum_unnecessary()
3144 	if (skb->ip_summed == CHECKSUM_UNNECESSARY) {  in __skb_incr_checksum_unnecessary()
3147 	} else if (skb->ip_summed == CHECKSUM_NONE) {  in __skb_incr_checksum_unnecessary()
3148 		skb->ip_summed = CHECKSUM_UNNECESSARY;  in __skb_incr_checksum_unnecessary()
3163 	if (skb->ip_summed == CHECKSUM_NONE ||  in __skb_mark_checksum_bad()
3164 	    skb->ip_summed == CHECKSUM_UNNECESSARY)  in __skb_mark_checksum_bad()
3199 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_checksum_complete_unset()
3200 		skb->ip_summed = CHECKSUM_NONE;  in skb_checksum_complete_unset()
3216 	if (skb->ip_summed == CHECKSUM_COMPLETE) {  in __skb_checksum_validate_complete()
3283 	return (skb->ip_summed == CHECKSUM_NONE &&  in __skb_checksum_convert_check()
3291 	skb->ip_summed = CHECKSUM_COMPLETE;  in __skb_checksum_convert()
3304 	skb->ip_summed = CHECKSUM_PARTIAL;  in skb_remcsum_adjust_partial()
3324 	 if (unlikely(skb->ip_summed != CHECKSUM_COMPLETE)) {  in skb_remcsum_process()
3566 	if (skb->ip_summed == CHECKSUM_COMPLETE)  in skb_forward_csum()
3567 		skb->ip_summed = CHECKSUM_NONE;  in skb_forward_csum()
3581 	BUG_ON(skb->ip_summed != CHECKSUM_NONE);  in skb_checksum_none_assert()