net/ppp/ppp_generic.c

285 static struct ppp *ppp_find_unit(struct ppp_net *pn, int unit);
286 static struct channel *ppp_find_channel(struct ppp_net *pn, int unit);
738 		struct ppp_net *pn;
757 			pn = ppp_pernet(current->nsproxy->net_ns);
758 			spin_lock_bh(&pn->all_channels_lock);
759 			pchb = ppp_find_channel(pn, unit);
765 			spin_unlock_bh(&pn->all_channels_lock);
1037 	struct ppp_net *pn;
1060 		pn = ppp_pernet(net);
1061 		mutex_lock(&pn->all_ppp_mutex);
1062 		ppp = ppp_find_unit(pn, unit);
1068 		mutex_unlock(&pn->all_ppp_mutex);
1075 		pn = ppp_pernet(net);
1076 		spin_lock_bh(&pn->all_channels_lock);
1077 		chan = ppp_find_channel(pn, unit);
1083 		spin_unlock_bh(&pn->all_channels_lock);
1109 	struct ppp_net *pn = net_generic(net, ppp_net_id);
1111 	idr_init(&pn->units_idr);
1112 	mutex_init(&pn->all_ppp_mutex);
1114 	INIT_LIST_HEAD(&pn->all_channels);
1115 	INIT_LIST_HEAD(&pn->new_channels);
1117 	spin_lock_init(&pn->all_channels_lock);
1124 	struct ppp_net *pn = net_generic(net, ppp_net_id);
1137 	idr_for_each_entry(&pn->units_idr, ppp, id)
1145 	mutex_destroy(&pn->all_ppp_mutex);
1146 	idr_destroy(&pn->units_idr);
1147 	WARN_ON_ONCE(!list_empty(&pn->all_channels));
1148 	WARN_ON_ONCE(!list_empty(&pn->new_channels));
1160 	struct ppp_net *pn = ppp_pernet(ppp->ppp_net);
1163 	mutex_lock(&pn->all_ppp_mutex);
1166 		ret = unit_get(&pn->units_idr, ppp, 0);
1174 				unit_put(&pn->units_idr, ret);
1175 				ret = unit_get(&pn->units_idr, ppp, ret + 1);
1186 		if (unit_find(&pn->units_idr, unit)) {
1190 		ret = unit_set(&pn->units_idr, ppp, unit);
1202 	mutex_unlock(&pn->all_ppp_mutex);
1213 	mutex_lock(&pn->all_ppp_mutex);
1214 	unit_put(&pn->units_idr, ppp->file.index);
1216 	mutex_unlock(&pn->all_ppp_mutex);
1555 	struct ppp_net *pn = ppp_pernet(ppp->ppp_net);
1561 	mutex_lock(&pn->all_ppp_mutex);
1562 	unit_put(&pn->units_idr, ppp->file.index);
1563 	mutex_unlock(&pn->all_ppp_mutex);
2880 	struct ppp_net *pn;
2886 	pn = ppp_pernet(net);
2901 	spin_lock_bh(&pn->all_channels_lock);
2902 	pch->file.index = ++pn->last_channel_index;
2903 	list_add(&pch->list, &pn->new_channels);
2905 	spin_unlock_bh(&pn->all_channels_lock);
2965 	struct ppp_net *pn;
2983 	pn = ppp_pernet(pch->chan_net);
2984 	spin_lock_bh(&pn->all_channels_lock);
2986 	spin_unlock_bh(&pn->all_channels_lock);
3413 ppp_find_unit(struct ppp_net *pn, int unit)
3415 	return unit_find(&pn->units_idr, unit);
3427 ppp_find_channel(struct ppp_net *pn, int unit)
3431 	list_for_each_entry(pch, &pn->new_channels, list) {
3433 			list_move(&pch->list, &pn->all_channels);
3438 	list_for_each_entry(pch, &pn->all_channels, list) {
3453 	struct ppp_net *pn;
3457 	pn = ppp_pernet(pch->chan_net);
3459 	mutex_lock(&pn->all_ppp_mutex);
3460 	ppp = ppp_find_unit(pn, unit);
3494 	mutex_unlock(&pn->all_ppp_mutex);