37 static int lowpan_frag_reasm(struct lowpan_frag_queue *fq,
53 	const struct lowpan_frag_queue *fq;  in lowpan_hashfn()  local
55 	fq = container_of(q, struct lowpan_frag_queue, q);  in lowpan_hashfn()
56 	return lowpan_hash_frag(fq->tag, fq->d_size, &fq->saddr, &fq->daddr);  in lowpan_hashfn()
61 	const struct lowpan_frag_queue *fq;  in lowpan_frag_match()  local
64 	fq = container_of(q, struct lowpan_frag_queue, q);  in lowpan_frag_match()
65 	return	fq->tag == arg->tag && fq->d_size == arg->d_size &&  in lowpan_frag_match()
66 		ieee802154_addr_equal(&fq->saddr, arg->src) &&  in lowpan_frag_match()
67 		ieee802154_addr_equal(&fq->daddr, arg->dst);  in lowpan_frag_match()
73 	struct lowpan_frag_queue *fq;  in lowpan_frag_init()  local
75 	fq = container_of(q, struct lowpan_frag_queue, q);  in lowpan_frag_init()
77 	fq->tag = arg->tag;  in lowpan_frag_init()
78 	fq->d_size = arg->d_size;  in lowpan_frag_init()
79 	fq->saddr = *arg->src;  in lowpan_frag_init()
80 	fq->daddr = *arg->dst;  in lowpan_frag_init()
85 	struct frag_queue *fq;  in lowpan_frag_expire()  local
88 	fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q);  in lowpan_frag_expire()
89 	net = container_of(fq->q.net, struct net, ieee802154_lowpan.frags);  in lowpan_frag_expire()
91 	spin_lock(&fq->q.lock);  in lowpan_frag_expire()
93 	if (fq->q.flags & INET_FRAG_COMPLETE)  in lowpan_frag_expire()
96 	inet_frag_kill(&fq->q, &lowpan_frags);  in lowpan_frag_expire()
98 	spin_unlock(&fq->q.lock);  in lowpan_frag_expire()
99 	inet_frag_put(&fq->q, &lowpan_frags);  in lowpan_frag_expire()
129 static int lowpan_frag_queue(struct lowpan_frag_queue *fq,  in lowpan_frag_queue()  argument
136 	if (fq->q.flags & INET_FRAG_COMPLETE)  in lowpan_frag_queue()
147 		if (end < fq->q.len ||  in lowpan_frag_queue()
148 		    ((fq->q.flags & INET_FRAG_LAST_IN) && end != fq->q.len))  in lowpan_frag_queue()
150 		fq->q.flags |= INET_FRAG_LAST_IN;  in lowpan_frag_queue()
151 		fq->q.len = end;  in lowpan_frag_queue()
153 		if (end > fq->q.len) {  in lowpan_frag_queue()
155 			if (fq->q.flags & INET_FRAG_LAST_IN)  in lowpan_frag_queue()
157 			fq->q.len = end;  in lowpan_frag_queue()
165 	prev = fq->q.fragments_tail;  in lowpan_frag_queue()
173 	for (next = fq->q.fragments; next != NULL; next = next->next) {  in lowpan_frag_queue()
184 		fq->q.fragments_tail = skb;  in lowpan_frag_queue()
188 		fq->q.fragments = skb;  in lowpan_frag_queue()
194 	fq->q.stamp = skb->tstamp;  in lowpan_frag_queue()
196 		fq->q.flags |= INET_FRAG_FIRST_IN;  in lowpan_frag_queue()
198 	fq->q.meat += skb->len;  in lowpan_frag_queue()
199 	add_frag_mem_limit(fq->q.net, skb->truesize);  in lowpan_frag_queue()
201 	if (fq->q.flags == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) &&  in lowpan_frag_queue()
202 	    fq->q.meat == fq->q.len) {  in lowpan_frag_queue()
207 		res = lowpan_frag_reasm(fq, prev, ldev);  in lowpan_frag_queue()
226 static int lowpan_frag_reasm(struct lowpan_frag_queue *fq, struct sk_buff *prev,  in lowpan_frag_reasm()  argument
229 	struct sk_buff *fp, *head = fq->q.fragments;  in lowpan_frag_reasm()
232 	inet_frag_kill(&fq->q, &lowpan_frags);  in lowpan_frag_reasm()
244 			fq->q.fragments_tail = fp;  in lowpan_frag_reasm()
247 		skb_morph(head, fq->q.fragments);  in lowpan_frag_reasm()
248 		head->next = fq->q.fragments->next;  in lowpan_frag_reasm()
250 		consume_skb(fq->q.fragments);  in lowpan_frag_reasm()
251 		fq->q.fragments = head;  in lowpan_frag_reasm()
279 		add_frag_mem_limit(fq->q.net, clone->truesize);  in lowpan_frag_reasm()
302 	sub_frag_mem_limit(fq->q.net, sum_truesize);  in lowpan_frag_reasm()
306 	head->tstamp = fq->q.stamp;  in lowpan_frag_reasm()
308 	fq->q.fragments = NULL;  in lowpan_frag_reasm()
309 	fq->q.fragments_tail = NULL;  in lowpan_frag_reasm()
408 	struct lowpan_frag_queue *fq;  in lowpan_frag_rcv()  local
432 	fq = fq_find(net, cb, &hdr.source, &hdr.dest);  in lowpan_frag_rcv()
433 	if (fq != NULL) {  in lowpan_frag_rcv()
436 		spin_lock(&fq->q.lock);  in lowpan_frag_rcv()
437 		ret = lowpan_frag_queue(fq, skb, frag_type);  in lowpan_frag_rcv()
438 		spin_unlock(&fq->q.lock);  in lowpan_frag_rcv()
440 		inet_frag_put(&fq->q, &lowpan_frags);  in lowpan_frag_rcv()