Valid ethertypes start at 1536.
Signed-off-by: Rich Lane <[email protected]>
---
This is the userspace equivalent of "datapath: Fix parsing invalid LLC/SNAP
ethertypes".
lib/flow.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/lib/flow.c b/lib/flow.c
index 5e7d1d4..397bda1 100644
--- a/lib/flow.c
+++ b/lib/flow.c
@@ -147,7 +147,12 @@ parse_ethertype(struct ofpbuf *b)
}
ofpbuf_pull(b, sizeof *llc);
- return llc->snap.snap_type;
+
+ if (ntohs(llc->snap.snap_type) >= ETH_TYPE_MIN) {
+ return llc->snap.snap_type;
+ }
+
+ return htons(FLOW_DL_TYPE_NONE);
}
static int
--
1.7.9.5
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