commit 8ed8d0b5d1596ec9a6cce5ca45eb1cb1dff94978
author Christian Franke <nobody@nowhere.ws> Sun Apr 03 12:46:26 2016 -0300
committer Donald Sharp <sharpd@cumulusnetworks.com> Fri Apr 22 08:33:54 2016 -0400
tree 645a36cc091c6ab5d8ec6c8003d42c2085510a2f
parent 106e38e4d42ecd94c083907872d514e8c67036f6

isisd: fix a crash due to an lsp-mtu issue

isisd crashed on startup if it was enabled for an interface with
a too small MTU.

To fix this, we treat this case as an invalid configuration and
disable isis on that interface if that case happens, since it is
a configuration error.

Signed-off-by: Christian Franke <nobody@nowhere.ws>

isisd/isis_circuit.c

diff --git a/isisd/isis_circuit.c b/isisd/isis_circuit.c
index a48afd2..01a9d1e 100644
--- a/isisd/isis_circuit.c
+++ b/isisd/isis_circuit.c
@@ -640,7 +640,7 @@
       zlog_err("Interface MTU %zu on %s is too low to support area lsp mtu %u!",
                isis_circuit_pdu_size(circuit), circuit->interface->name,
                circuit->area->lsp_mtu);
-      isis_circuit_down(circuit);
+      isis_circuit_update_all_srmflags(circuit, 0);
       return ISIS_ERROR;
     }