221 static void inet_frag_destroy_rcu(struct rcu_head *head)  in inet_frag_destroy_rcu()  argument
223 	struct inet_frag_queue *q = container_of(head, struct inet_frag_queue,  in inet_frag_destroy_rcu()
413 	struct sk_buff *fp, *head = skb_rb_first(&q->rb_fragments);  in inet_frag_reasm_prepare()  local
417 	if (head != skb) {  in inet_frag_reasm_prepare()
429 		skb_morph(skb, head);  in inet_frag_reasm_prepare()
430 		FRAG_CB(skb)->next_frag = FRAG_CB(head)->next_frag;  in inet_frag_reasm_prepare()
431 		rb_replace_node(&head->rbnode, &skb->rbnode,  in inet_frag_reasm_prepare()
433 		consume_skb(head);  in inet_frag_reasm_prepare()
434 		head = skb;  in inet_frag_reasm_prepare()
436 	WARN_ON(head->ip_defrag_offset != 0);  in inet_frag_reasm_prepare()
438 	delta = -head->truesize;  in inet_frag_reasm_prepare()
441 	if (skb_unclone(head, GFP_ATOMIC))  in inet_frag_reasm_prepare()
444 	delta += head->truesize;  in inet_frag_reasm_prepare()
452 	if (skb_has_frag_list(head)) {  in inet_frag_reasm_prepare()
459 		skb_shinfo(clone)->frag_list = skb_shinfo(head)->frag_list;  in inet_frag_reasm_prepare()
460 		skb_frag_list_init(head);  in inet_frag_reasm_prepare()
461 		for (i = 0; i < skb_shinfo(head)->nr_frags; i++)  in inet_frag_reasm_prepare()
462 			plen += skb_frag_size(&skb_shinfo(head)->frags[i]);  in inet_frag_reasm_prepare()
463 		clone->data_len = head->data_len - plen;  in inet_frag_reasm_prepare()
465 		head->truesize += clone->truesize;  in inet_frag_reasm_prepare()
467 		clone->ip_summed = head->ip_summed;  in inet_frag_reasm_prepare()
469 		skb_shinfo(head)->frag_list = clone;  in inet_frag_reasm_prepare()
472 		nextp = &skb_shinfo(head)->frag_list;  in inet_frag_reasm_prepare()
479 void inet_frag_reasm_finish(struct inet_frag_queue *q, struct sk_buff *head,  in inet_frag_reasm_finish()  argument
487 	skb_push(head, head->data - skb_network_header(head));  in inet_frag_reasm_finish()
490 	fp = FRAG_CB(head)->next_frag;  in inet_frag_reasm_finish()
491 	rbn = rb_next(&head->rbnode);  in inet_frag_reasm_finish()
492 	rb_erase(&head->rbnode, &q->rb_fragments);  in inet_frag_reasm_finish()
494 	sum_truesize = head->truesize;  in inet_frag_reasm_finish()
506 			if (head->ip_summed != fp->ip_summed)  in inet_frag_reasm_finish()
507 				head->ip_summed = CHECKSUM_NONE;  in inet_frag_reasm_finish()
508 			else if (head->ip_summed == CHECKSUM_COMPLETE)  in inet_frag_reasm_finish()
509 				head->csum = csum_add(head->csum, fp->csum);  in inet_frag_reasm_finish()
511 			if (try_coalesce && skb_try_coalesce(head, fp, &stolen,  in inet_frag_reasm_finish()
519 				head->data_len += fp->len;  in inet_frag_reasm_finish()
520 				head->len += fp->len;  in inet_frag_reasm_finish()
521 				head->truesize += fp->truesize;  in inet_frag_reasm_finish()
541 	skb_mark_not_on_list(head);  in inet_frag_reasm_finish()
542 	head->prev = NULL;  in inet_frag_reasm_finish()
543 	head->tstamp = q->stamp;  in inet_frag_reasm_finish()
549 	struct sk_buff *head, *skb;  in inet_frag_pull_head()  local
551 	head = skb_rb_first(&q->rb_fragments);  in inet_frag_pull_head()
552 	if (!head)  in inet_frag_pull_head()
554 	skb = FRAG_CB(head)->next_frag;  in inet_frag_pull_head()
556 		rb_replace_node(&head->rbnode, &skb->rbnode,  in inet_frag_pull_head()
559 		rb_erase(&head->rbnode, &q->rb_fragments);  in inet_frag_pull_head()
560 	memset(&head->rbnode, 0, sizeof(head->rbnode));  in inet_frag_pull_head()
563 	if (head == q->fragments_tail)  in inet_frag_pull_head()
566 	sub_frag_mem_limit(q->fqdir, head->truesize);  in inet_frag_pull_head()
568 	return head;  in inet_frag_pull_head()