pppoe: introduced called-sid option.

This new option will control how to represent Called-Station-ID.
Its value maybe ifname,mac or ifname:mac.
By default mac is used to keep compatibility with old versions.
Also old option ifname-in-sid is removed from documentation, but is still supported for compatibility.

1 files changed, 32 insertions, 10 deletions

diff --git a/accel-pppd/ctrl/pppoe/pppoe.c b/accel-pppd/ctrl/pppoe/pppoe.c
index 1dc21a3d..07019d89 100644
--- a/accel-pppd/ctrl/pppoe/pppoe.c
+++ b/accel-pppd/ctrl/pppoe/pppoe.c
@@ -33,8 +33,7 @@
 
 #include "memdebug.h"
 
-struct pppoe_conn_t
-{
+struct pppoe_conn_t {
 	struct list_head entry;
 	struct triton_context_t ctx;
 	struct pppoe_serv_t *serv;
@@ -90,6 +89,8 @@ int conf_tr101 = 1;
 int conf_padi_limit = 0;
 int conf_mppe = MPPE_UNSET;
 static const char *conf_ip_pool;
+enum {CSID_MAC, CSID_IFNAME, CSID_IFNAME_MAC};
+static int conf_called_sid;
 
 static mempool_t conn_pool;
 static mempool_t pado_pool;
@@ -280,8 +281,23 @@ static struct pppoe_conn_t *allocate_channel(struct pppoe_serv_t *serv, const ui
 	conn->ctrl.name = "pppoe";
 	conn->ctrl.mppe = conf_mppe;
 
+	if (conf_called_sid == CSID_IFNAME)
+		conn->ctrl.called_station_id = _strdup(serv->ifname);
+	else if (conf_called_sid == CSID_IFNAME_MAC) {
+		conn->ctrl.called_station_id = _malloc(IFNAMSIZ + 19);
+		sprintf(conn->ctrl.called_station_id, "%s:%02x:%02x:%02x:%02x:%02x:%02x", serv->ifname,
+			serv->hwaddr[0], serv->hwaddr[1], serv->hwaddr[2], serv->hwaddr[3], serv->hwaddr[4], serv->hwaddr[5]);
+	} else {
+		conn->ctrl.called_station_id = _malloc(IFNAMSIZ + 19);
+		if (conf_ifname_in_sid == 2 || conf_ifname_in_sid == 3)
+			sprintf(conn->ctrl.called_station_id, "%s:%02x:%02x:%02x:%02x:%02x:%02x", serv->ifname,
+				serv->hwaddr[0], serv->hwaddr[1], serv->hwaddr[2], serv->hwaddr[3], serv->hwaddr[4], serv->hwaddr[5]);
+		else
+			sprintf(conn->ctrl.called_station_id, "%02x:%02x:%02x:%02x:%02x:%02x",
+				serv->hwaddr[0], serv->hwaddr[1], serv->hwaddr[2], serv->hwaddr[3], serv->hwaddr[4], serv->hwaddr[5]);
+	}
+
 	conn->ctrl.calling_station_id = _malloc(IFNAMSIZ + 19);
-	conn->ctrl.called_station_id = _malloc(IFNAMSIZ + 19);
 
 	if (conf_ifname_in_sid == 1 || conf_ifname_in_sid == 3)
 		sprintf(conn->ctrl.calling_station_id, "%s:%02x:%02x:%02x:%02x:%02x:%02x", serv->ifname,
@@ -290,13 +306,6 @@ static struct pppoe_conn_t *allocate_channel(struct pppoe_serv_t *serv, const ui
 		sprintf(conn->ctrl.calling_station_id, "%02x:%02x:%02x:%02x:%02x:%02x",
 			addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 	
-	if (conf_ifname_in_sid == 2 || conf_ifname_in_sid == 3)
-		sprintf(conn->ctrl.called_station_id, "%s:%02x:%02x:%02x:%02x:%02x:%02x", serv->ifname,
-			serv->hwaddr[0], serv->hwaddr[1], serv->hwaddr[2], serv->hwaddr[3], serv->hwaddr[4], serv->hwaddr[5]);
-	else
-		sprintf(conn->ctrl.called_station_id, "%02x:%02x:%02x:%02x:%02x:%02x",
-			serv->hwaddr[0], serv->hwaddr[1], serv->hwaddr[2], serv->hwaddr[3], serv->hwaddr[4], serv->hwaddr[5]);
-	
 	ppp_init(&conn->ppp);
 
 	conn->ppp.ses.ctrl = &conn->ctrl;
@@ -1508,6 +1517,19 @@ static void load_config(void)
 	}
 
 	conf_ip_pool = conf_get_opt("pppoe", "ip-pool");
+
+	conf_called_sid = CSID_MAC;
+	opt = conf_get_opt("pppoe", "called-sid");
+	if (opt) {
+		if (!strcmp(opt, "mac"))
+			conf_called_sid = CSID_MAC;
+		else if (!strcmp(opt, "ifname"))
+			conf_called_sid = CSID_IFNAME;
+		else if (!strcmp(opt, "ifname:mac"))
+			conf_called_sid = CSID_IFNAME_MAC;
+		else
+			log_error("pppoe: unknown called-sid type\n");
+	}
 }
 
 static void pppoe_init(void)