2863 	__sum16 sum;  in __skb_checksum_complete_head()  local
2865 	sum = csum_fold(skb_checksum(skb, 0, len, skb->csum));  in __skb_checksum_complete_head()
2867 	if (likely(!sum)) {  in __skb_checksum_complete_head()
2873 		skb->csum_valid = !sum;  in __skb_checksum_complete_head()
2874 	return sum;  in __skb_checksum_complete_head()
2890 	__sum16 sum;  in __skb_checksum_complete()  local
2894 	sum = csum_fold(csum_add(skb->csum, csum));  in __skb_checksum_complete()
2902 	if (likely(!sum)) {  in __skb_checksum_complete()
2913 		skb->csum_valid = !sum;  in __skb_checksum_complete()
2916 	return sum;  in __skb_checksum_complete()
2920 static __wsum warn_crc32c_csum_update(const void *buff, int len, __wsum sum)  in warn_crc32c_csum_update()  argument
3149 	unsigned int sum = 0;  in skb_rbtree_purge()  local
3156 		sum += skb->truesize;  in skb_rbtree_purge()
3159 	return sum;  in skb_rbtree_purge()