when oxm length is not what we expect, explicitly raise an exception
with descriptive message like the following.
Exception: Unexpected OXM payload length 3 for ipv6_flabel (expected 4)
This often happens if you are using LINC and IPv6.
https://github.com/FlowForwarding/of_protocol/pull/57
Signed-off-by: YAMAMOTO Takashi <yamam...@valinux.co.jp>
---
ryu/ofproto/oxm_fields.py | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/ryu/ofproto/oxm_fields.py b/ryu/ofproto/oxm_fields.py
index 1f83a70..e89d1eb 100644
--- a/ryu/ofproto/oxm_fields.py
+++ b/ryu/ofproto/oxm_fields.py
@@ -188,6 +188,10 @@ def to_user(num_to_field, n, v, m):
t = UnknownType
name = 'field_%d' % n
if not v is None:
+ if hasattr(t, 'size') and t.size != len(v):
+ raise Exception(
+ 'Unexpected OXM payload length %d for %s (expected %d)'
+ % (len(v), name, t.size))
value = t.to_user(v)
else:
value = None
--
1.8.3.1
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