patch-2.1.15 linux/net/netbeui/netbeui_llc.c

• Lines: 187
• Date: Thu Dec 12 16:54:26 1996
• Orig file: v2.1.14/linux/net/netbeui/netbeui_llc.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.14/linux/net/netbeui/netbeui_llc.c linux/net/netbeui/netbeui_llc.c
@@ -0,0 +1,186 @@
+/*
+ *	Maintain 802.2 LLC logical channels being used by NetBEUI
+ */
+
+
+
+void netbeui_disc_indication(llcptr llc)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	if(nb->users>0)
+		llc_connect_request(&nb->llc);
+}
+
+void netbeui_disc_confirm(llcptr llc)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	if(nb->users>0)
+		llc_connect_request(&nb->llc);
+	else
+	{
+		netbeui_destroy_channel(nb);
+	}
+}
+
+void netbeui_connect_confirm(llcptr llc)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	nb->status=SS_CONNECTED;
+	wakeup(&nb->wait_queue);
+}
+
+void netbeui_connect_indication(llcptr llc)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	nb->status=SS_CONNECTED;
+	wakeup(&nb->wait_queue);
+}
+
+void netbeui_reset_confirm(llcptr llc)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	/* Good question .. */
+}
+
+void netbeui_reset_indication(llcptr llc, char lr)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	printk("netbeui: 802.2LLC reset.\n");
+	/* Good question too */
+}
+	 
+void netbeui_data_indication(llcptr llc, struct sk_buff *skb)
+{
+	netbeui_rcv_seq(LLC_TO_NB(llc),skb);
+}
+
+int netbeui_unit_data_indication(llcptr llc, struct sk_buff *skb)
+{
+	return netbeui_rcv_dgram(LLC_TO_NB(llc),skb);
+}
+
+int netbeui_xid_indication(llcptr llc, int ll, char *data)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	/* No action needed */
+}
+
+int netbeui_test_indication(llcptr llc, int ll, char *data)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	/* No action needed */
+}
+
+void netbeui_report_status(llcptr llc, char status)
+{
+	struct nb_link *nb=LLC_TO_NB(llc);
+	switch(status)
+	{
+		case FRMR_RECEIVED:
+		case FRMR_SENT:
+			printk("netbeui: FRMR event %d\n",status);
+			break;	/* FRMR's - shouldnt occur - debug log */
+		case REMOTE_BUSY:
+			nb->busy=1;
+			break;
+		case REMOTE_NOT_BUSY:
+			nb->busy=0;
+			wakeup(&nb->wakeup);
+			break;
+		default:
+			printk("LLC passed netbeui bogus state %d\n",status);
+			break;
+	}
+}
+
+struct llc_ops netbeui_ops=
+{
+	netbeui_data_indication,		/* Sequenced frame */
+	netbeui_unit_data_indication,		/* Datagrams */
+	netbeui_connect_indication,		/* They called us */
+	netbeui_connect_confirm,		/* We called them, they OK'd */
+	netbeui_data_connect_indication,	/* Erm ?????? */
+	netbeui_data_connect_confirm,		/* Erm ?????? */
+	netbeui_disc_indication,		/* They closed */
+	netbeui_disc_confirm,			/* We closed they OK'd */
+	netbeui_reset_confirm,			/* Our reset worked */
+	netbeui_reset_indication,		/* They reset on us */
+	netbeui_xid_indication,			/* An XID frame */
+	netbeui_test_indication,		/* A TEST frame */
+	netbeui_report_status			/* Link state change */
+};
+
+/*
+ *	Create a new outgoing session
+ */
+ 
+struct nb_link *netbeui_create_channel(struct device *dev, u8 *remote_mac, int pri)
+{
+	struct nb_link *nb=netbeui_find_channel(dev,remote_mac);
+	if(nb)
+	{
+		nb->users++;
+		return nb;
+	}
+	nb=netbeui_alloc_link(pri);
+	if(nb==NULL)
+		return NULL;
+	
+	/*
+	 *	Internal book keeping
+	 */
+	 
+	nb->dev=dev;
+	init_timer(&nb->timer);
+	nb->timer.function=netbeui_link_timer;
+	nb->users=1;
+	nb->busy=0;
+	nb->wakeup=NULL;
+	nb->status=SS_CONNECTING;
+	memcpy(nb->remote_mac, remote_mac, ETH_ALEN);
+	
+	/*
+	 *	Now try and attach an LLC.
+	 */
+	
+	if(register_cl2llc_client(&nb->llc,dev->name,&nebeui_llcops,
+		remote_mac, NETBEUI_SAP, NETBEUI_SAP)<0)
+	{
+		netbeui_free_link(nb);
+		return NULL;
+	}
+	
+	/*
+	 *	Commence connection establishment.
+	 */
+	 
+	llc_connect_request(&nb->llc);
+	
+	/*
+	 *	Done
+	 */
+
+	nb->next=nb_link_list;
+	nb_link_list=nb;
+	 
+	return nb;
+}
+	
+int netbeui_delete_channel(struct nb_link *nb)
+{
+	nb->users--;
+	if(nb->users)
+		return 0;
+		
+	llc_disconnect_request(lp);
+	/*
+	 *	Ensure we drop soon. The disconnect confirm will let
+	 *	us fix the deletion
+	 */
+	nb->state = SS_DISCONNECTING;
+	nb->timer.expires=jiffies+NB_DROP_TIMEOUT;
+	add_timer(&nb->timer);
+	return 0;
+}
+
+