[v2,3/4] ip_frag: ipv6 fragments must not be resubmitted to fragmentation
diff mbox series

Message ID 20200401131849.2209336-4-aconole@redhat.com
State Superseded, archived
Delegated to: Thomas Monjalon
Headers show
Series
  • ip_frag: add a unit test for fragmentation
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Checks

Context Check Description
ci/Intel-compilation fail Compilation issues
ci/checkpatch success coding style OK

Commit Message

Aaron Conole April 1, 2020, 1:18 p.m. UTC
IPv6 only allows traffic source nodes to fragment, so submitting
a packet with next header of IPPROTO_FRAGMENT would be invalid.

Signed-off-by: Aaron Conole <aconole@redhat.com>
---
 lib/librte_ip_frag/rte_ipv6_fragmentation.c | 4 ++++
 1 file changed, 4 insertions(+)

Patch
diff mbox series

diff --git a/lib/librte_ip_frag/rte_ipv6_fragmentation.c b/lib/librte_ip_frag/rte_ipv6_fragmentation.c
index 820a5dc725..aebcfa4325 100644
--- a/lib/librte_ip_frag/rte_ipv6_fragmentation.c
+++ b/lib/librte_ip_frag/rte_ipv6_fragmentation.c
@@ -106,6 +106,10 @@  rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in,
 
 	in_hdr = rte_pktmbuf_mtod(pkt_in, struct rte_ipv6_hdr *);
 
+	/* Fragmenting a fragmented packet?! */
+	if (unlikely(in_hdr->proto == IPPROTO_FRAGMENT))
+		return -ENOTSUP;
+
 	in_seg = pkt_in;
 	in_seg_data_pos = sizeof(struct rte_ipv6_hdr);
 	out_pkt_pos = 0;