48 static int lowpan_frag_reasm(struct lowpan_frag_queue *fq,
64 	const struct lowpan_frag_queue *fq;  in lowpan_hashfn()  local
66 	fq = container_of(q, struct lowpan_frag_queue, q);  in lowpan_hashfn()
67 	return lowpan_hash_frag(fq->tag, fq->d_size, &fq->saddr, &fq->daddr);  in lowpan_hashfn()
72 	const struct lowpan_frag_queue *fq;  in lowpan_frag_match()  local
75 	fq = container_of(q, struct lowpan_frag_queue, q);  in lowpan_frag_match()
76 	return	fq->tag == arg->tag && fq->d_size == arg->d_size &&  in lowpan_frag_match()
77 		ieee802154_addr_equal(&fq->saddr, arg->src) &&  in lowpan_frag_match()
78 		ieee802154_addr_equal(&fq->daddr, arg->dst);  in lowpan_frag_match()
84 	struct lowpan_frag_queue *fq;  in lowpan_frag_init()  local
86 	fq = container_of(q, struct lowpan_frag_queue, q);  in lowpan_frag_init()
88 	fq->tag = arg->tag;  in lowpan_frag_init()
89 	fq->d_size = arg->d_size;  in lowpan_frag_init()
90 	fq->saddr = *arg->src;  in lowpan_frag_init()
91 	fq->daddr = *arg->dst;  in lowpan_frag_init()
96 	struct frag_queue *fq;  in lowpan_frag_expire()  local
99 	fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q);  in lowpan_frag_expire()
100 	net = container_of(fq->q.net, struct net, ieee802154_lowpan.frags);  in lowpan_frag_expire()
102 	spin_lock(&fq->q.lock);  in lowpan_frag_expire()
104 	if (fq->q.flags & INET_FRAG_COMPLETE)  in lowpan_frag_expire()
107 	inet_frag_kill(&fq->q, &lowpan_frags);  in lowpan_frag_expire()
109 	spin_unlock(&fq->q.lock);  in lowpan_frag_expire()
110 	inet_frag_put(&fq->q, &lowpan_frags);  in lowpan_frag_expire()
140 static int lowpan_frag_queue(struct lowpan_frag_queue *fq,  in lowpan_frag_queue()  argument
147 	if (fq->q.flags & INET_FRAG_COMPLETE)  in lowpan_frag_queue()
158 		if (end < fq->q.len ||  in lowpan_frag_queue()
159 		    ((fq->q.flags & INET_FRAG_LAST_IN) && end != fq->q.len))  in lowpan_frag_queue()
161 		fq->q.flags |= INET_FRAG_LAST_IN;  in lowpan_frag_queue()
162 		fq->q.len = end;  in lowpan_frag_queue()
164 		if (end > fq->q.len) {  in lowpan_frag_queue()
166 			if (fq->q.flags & INET_FRAG_LAST_IN)  in lowpan_frag_queue()
168 			fq->q.len = end;  in lowpan_frag_queue()
176 	prev = fq->q.fragments_tail;  in lowpan_frag_queue()
182 	for (next = fq->q.fragments; next != NULL; next = next->next) {  in lowpan_frag_queue()
192 		fq->q.fragments_tail = skb;  in lowpan_frag_queue()
196 		fq->q.fragments = skb;  in lowpan_frag_queue()
202 	fq->q.stamp = skb->tstamp;  in lowpan_frag_queue()
205 		fq->q.meat += lowpan_uncompress_size(skb, NULL);  in lowpan_frag_queue()
206 		fq->q.flags |= INET_FRAG_FIRST_IN;  in lowpan_frag_queue()
208 		fq->q.meat += skb->len;  in lowpan_frag_queue()
210 	add_frag_mem_limit(&fq->q, skb->truesize);  in lowpan_frag_queue()
212 	if (fq->q.flags == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) &&  in lowpan_frag_queue()
213 	    fq->q.meat == fq->q.len) {  in lowpan_frag_queue()
218 		res = lowpan_frag_reasm(fq, prev, dev);  in lowpan_frag_queue()
237 static int lowpan_frag_reasm(struct lowpan_frag_queue *fq, struct sk_buff *prev,  in lowpan_frag_reasm()  argument
240 	struct sk_buff *fp, *head = fq->q.fragments;  in lowpan_frag_reasm()
243 	inet_frag_kill(&fq->q, &lowpan_frags);  in lowpan_frag_reasm()
255 			fq->q.fragments_tail = fp;  in lowpan_frag_reasm()
258 		skb_morph(head, fq->q.fragments);  in lowpan_frag_reasm()
259 		head->next = fq->q.fragments->next;  in lowpan_frag_reasm()
261 		consume_skb(fq->q.fragments);  in lowpan_frag_reasm()
262 		fq->q.fragments = head;  in lowpan_frag_reasm()
290 		add_frag_mem_limit(&fq->q, clone->truesize);  in lowpan_frag_reasm()
313 	sub_frag_mem_limit(&fq->q, sum_truesize);  in lowpan_frag_reasm()
317 	head->tstamp = fq->q.stamp;  in lowpan_frag_reasm()
319 	fq->q.fragments = NULL;  in lowpan_frag_reasm()
320 	fq->q.fragments_tail = NULL;  in lowpan_frag_reasm()
356 	struct lowpan_frag_queue *fq;  in lowpan_frag_rcv()  local
374 	fq = fq_find(net, frag_info, &source, &dest);  in lowpan_frag_rcv()
375 	if (fq != NULL) {  in lowpan_frag_rcv()
378 		spin_lock(&fq->q.lock);  in lowpan_frag_rcv()
379 		ret = lowpan_frag_queue(fq, skb, frag_type);  in lowpan_frag_rcv()
380 		spin_unlock(&fq->q.lock);  in lowpan_frag_rcv()
382 		inet_frag_put(&fq->q, &lowpan_frags);  in lowpan_frag_rcv()