76 	struct qib_mcast *mcast;  in qib_mcast_alloc()  local
78 	mcast = kmalloc(sizeof(*mcast), GFP_KERNEL);  in qib_mcast_alloc()
79 	if (!mcast)  in qib_mcast_alloc()
82 	mcast->mgid = *mgid;  in qib_mcast_alloc()
83 	INIT_LIST_HEAD(&mcast->qp_list);  in qib_mcast_alloc()
84 	init_waitqueue_head(&mcast->wait);  in qib_mcast_alloc()
85 	atomic_set(&mcast->refcount, 0);  in qib_mcast_alloc()
86 	mcast->n_attached = 0;  in qib_mcast_alloc()
89 	return mcast;  in qib_mcast_alloc()
92 static void qib_mcast_free(struct qib_mcast *mcast)  in qib_mcast_free()  argument
96 	list_for_each_entry_safe(p, tmp, &mcast->qp_list, list)  in qib_mcast_free()
99 	kfree(mcast);  in qib_mcast_free()
115 	struct qib_mcast *mcast;  in qib_mcast_find()  local
122 		mcast = rb_entry(n, struct qib_mcast, rb_node);  in qib_mcast_find()
124 		ret = memcmp(mgid->raw, mcast->mgid.raw,  in qib_mcast_find()
131 			atomic_inc(&mcast->refcount);  in qib_mcast_find()
138 	mcast = NULL;  in qib_mcast_find()
141 	return mcast;  in qib_mcast_find()
154 			 struct qib_mcast *mcast, struct qib_mcast_qp *mqp)  in qib_mcast_add()  argument
169 		ret = memcmp(mcast->mgid.raw, tmcast->mgid.raw,  in qib_mcast_add()
209 	mcast->n_attached++;  in qib_mcast_add()
211 	list_add_tail_rcu(&mqp->list, &mcast->qp_list);  in qib_mcast_add()
213 	atomic_inc(&mcast->refcount);  in qib_mcast_add()
214 	rb_link_node(&mcast->rb_node, pn, n);  in qib_mcast_add()
215 	rb_insert_color(&mcast->rb_node, &ibp->mcast_tree);  in qib_mcast_add()
230 	struct qib_mcast *mcast;  in qib_multicast_attach()  local
243 	mcast = qib_mcast_alloc(gid);  in qib_multicast_attach()
244 	if (mcast == NULL) {  in qib_multicast_attach()
250 		qib_mcast_free(mcast);  in qib_multicast_attach()
255 	switch (qib_mcast_add(dev, ibp, mcast, mqp)) {  in qib_multicast_attach()
259 		qib_mcast_free(mcast);  in qib_multicast_attach()
263 		qib_mcast_free(mcast);  in qib_multicast_attach()
269 		qib_mcast_free(mcast);  in qib_multicast_attach()
288 	struct qib_mcast *mcast = NULL;  in qib_multicast_detach()  local
307 		mcast = rb_entry(n, struct qib_mcast, rb_node);  in qib_multicast_detach()
308 		ret = memcmp(gid->raw, mcast->mgid.raw,  in qib_multicast_detach()
319 	list_for_each_entry_safe(p, tmp, &mcast->qp_list, list) {  in qib_multicast_detach()
327 		mcast->n_attached--;  in qib_multicast_detach()
331 		if (list_empty(&mcast->qp_list)) {  in qib_multicast_detach()
332 			rb_erase(&mcast->rb_node, &ibp->mcast_tree);  in qib_multicast_detach()
346 	wait_event(mcast->wait, atomic_read(&mcast->refcount) <= 1);  in qib_multicast_detach()
350 		atomic_dec(&mcast->refcount);  in qib_multicast_detach()
351 		wait_event(mcast->wait, !atomic_read(&mcast->refcount));  in qib_multicast_detach()
352 		qib_mcast_free(mcast);  in qib_multicast_detach()