[ipa] Handle losing the RSL/OML connection..

This is addressing multiple issues regarding the loss of the
OML/RSL link to the BTS.

1.) When we lose the OML link, close down all RSL connections
on all TRXs (only tested with one TRX) and free the e1inp_line
allocated for the OML connection.
2.) When we lose the RSL link on any TRX and we know to which
lines this connection belongs, we will close down the OML connection
as we have a problem to just reactivate the RSL link.
3.) When we lose the RSL link on any TRX and we do not know
where it belongs to we will free the bfd we have allocated in the
rsl listen/accept method and we properly close the socket (i could
not test this one properly).
4.) When we already have a bts->oml_link we will throw it away
and use the new link.

1 files changed, 5 insertions, 6 deletions

diff --git a/openbsc/src/vty_interface.c b/openbsc/src/vty_interface.c
index 3c1f0ba5c..b89d633ae 100644
--- a/openbsc/src/vty_interface.c
+++ b/openbsc/src/vty_interface.c
@@ -39,6 +39,7 @@
 #include <osmocore/talloc.h>
 #include <openbsc/telnet_interface.h>
 #include <openbsc/vty.h>
+#include <openbsc/ipaccess.h>
 
 static struct gsm_network *gsmnet;
 
@@ -984,14 +985,12 @@ DEFUN(drop_bts,
 
 
 	/* close all connections */
-	if (strcmp(argv[1], "oml") == 0) {
-		if (bts->oml_link)
-			close(bts->oml_link->ts->driver.ipaccess.fd.fd);
-	} else if (strcmp(argv[1], "rsl") == 0) {
+	if (strcmp(argv[1], "oml") == 0)
+		ipaccess_drop_oml(bts);
+	else if (strcmp(argv[1], "rsl") == 0) {
 		/* close all rsl connections */
 		llist_for_each_entry(trx, &bts->trx_list, list) {
-			if (trx->rsl_link)
-				close(trx->rsl_link->ts->driver.ipaccess.fd.fd);
+			ipaccess_drop_rsl(trx);
 		}
 	} else {
 		vty_out(vty, "Argument must be 'oml# or 'rsl'.%s", VTY_NEWLINE);