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-rw-r--r--lib/odp-util.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/odp-util.c b/lib/odp-util.c
index dd67ef62..7b725412 100644
--- a/lib/odp-util.c
+++ b/lib/odp-util.c
@@ -1155,7 +1155,10 @@ ovs_to_odp_frag(uint8_t ovs_frag)
: OVS_FRAG_TYPE_NONE);
}
-/* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'. */
+/* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
+ *
+ * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
+ * capable of being expanded to allow for that much space. */
void
odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow)
{