Similar to v4, we should ensure that at least a minimum fragmentation
length can be achieved.
Signed-off-by: Aaron Conole <acon...@redhat.com>
---
lib/librte_ip_frag/rte_ipv6_fragmentation.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/lib/librte_ip_frag/rte_ipv6_fragmentation.c
b/lib/librte_ip_frag/rte_ipv6_fragmentation.c
index 43449970e5..820a5dc725 100644
--- a/lib/librte_ip_frag/rte_ipv6_fragmentation.c
+++ b/lib/librte_ip_frag/rte_ipv6_fragmentation.c
@@ -79,6 +79,17 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in,
uint16_t fragment_offset, frag_size;
uint64_t frag_bytes_remaining;
+ /*
+ * The rules on ipv6 fragmentation means we need at least to be
+ * greater than the smallest fragment possible - ipv6hdr + frag header
+ * + min octets. We rely on the ipv6_extension_fragment header to
+ * include 'data' octets.
+ */
+ if (unlikely(mtu_size <
+ (sizeof(struct rte_ipv6_hdr) +
+ sizeof(struct ipv6_extension_fragment))))
+ return -EINVAL;
+
/*
* Ensure the IP payload length of all fragments (except the
* the last fragment) are a multiple of 8 bytes per RFC2460.
--
2.25.1
