[LLC] use the core lists to get info for /proc/net/llc

With this llc_ui_sockets is almost not needed anymore, next
changesets will deal with the dataunit/xid/test primitives, that
are still using it.

net/llc/llc_sock.c

@@ -1320,18 +1320,26 @@ static int llc_ui_get_info(char *buffer, char **start, off_t offset, int length)
 {
 	off_t pos = 0;
 	off_t begin = 0;
-	struct sock *s;
+	struct llc_opt *llc;
+	struct llc_sap *sap;
+	struct list_head *sap_entry, *llc_entry;
+	struct llc_station *station = llc_station_get();
 	int len = sprintf(buffer, "SKt Mc local_mac_sap        "
 				  "remote_mac_sap       tx_queue rx_queue st uid "
 				  "link\n");
+
 	/* Output the LLC socket data for the /proc filesystem */
-	read_lock_bh(&llc_ui_sockets_lock);
-	for (s = llc_ui_sockets; s; s = s->next) {
-		struct llc_opt *llc = llc_sk(s);
+	spin_lock_bh(&station->sap_list.lock);
+	list_for_each(sap_entry, &station->sap_list.list) {
+		sap = list_entry(sap_entry, struct llc_sap, node);
 
-		len += sprintf(buffer + len, "%2X  %2X ", s->type,
+		spin_lock_bh(&sap->sk_list.lock);
+		list_for_each(llc_entry, &sap->sk_list.list) {
+			llc = list_entry(llc_entry, struct llc_opt, node);
+
+			len += sprintf(buffer + len, "%2X  %2X ",
+				       llc->sk->type,
 				       !llc_mac_null(llc->addr.sllc_mmac));
-		if (llc->sap) {
 			if (llc->dev && llc_mac_null(llc->addr.sllc_mmac))
 				llc_ui_format_mac(buffer + len,
 						  llc->dev->dev_addr);
@@ -1344,19 +1352,19 @@ static int llc_ui_get_info(char *buffer, char **start, off_t offset, int length)
 						"00:00:00:00:00:00");
 			}
 			len += MAC_FORMATTED_SIZE;
-			len += sprintf(buffer + len, "@%02X ",
-					llc->sap->laddr.lsap);
-		} else
-			len += sprintf(buffer + len, "00:00:00:00:00:00@00 ");
+			len += sprintf(buffer + len, "@%02X ", sap->laddr.lsap);
 			llc_ui_format_mac(buffer + len, llc->addr.sllc_dmac);
 			len += MAC_FORMATTED_SIZE;
 			len += sprintf(buffer + len,
-				"@%02X %8d %8d %2d %-3d ",
+					"@%02X %8d %8d %2d %3d ",
 					llc->addr.sllc_dsap,
-				atomic_read(&s->wmem_alloc),
-				atomic_read(&s->rmem_alloc), s->state,
-				SOCK_INODE(s->socket)->i_uid);
-		len += sprintf(buffer + len, "%-4d\n", llc->link);
+					atomic_read(&llc->sk->wmem_alloc),
+					atomic_read(&llc->sk->rmem_alloc),
+					llc->sk->state,
+					llc->sk->socket ?
+					  SOCK_INODE(llc->sk->socket)->i_uid :
+					  -1);
+			len += sprintf(buffer + len, "%4d\n", llc->link);
 			/* Are we still dumping unwanted data then discard the record */
 			pos = begin + len;
 
@@ -1367,7 +1375,9 @@ static int llc_ui_get_info(char *buffer, char **start, off_t offset, int length)
 			if (pos > offset + length) /* We have dumped enough */
 				break;
 		}
-	read_unlock_bh(&llc_ui_sockets_lock);
+		spin_unlock_bh(&sap->sk_list.lock);
+	}
+	spin_unlock_bh(&station->sap_list.lock);
 
 	/* The data in question runs from begin to begin + len */
 	*start = buffer + offset - begin; /* Start of wanted data */