[dpdk-dev] [PATCH v6 2/3] ip_frag: ensure minimum v6 fragmentation length
Aaron Conole
aconole at redhat.com
Mon Apr 20 21:25:22 CEST 2020
In addition, do a formal parameter check.
Acked-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
Acked-by: Lukasz Wojciechowski <l.wojciechow at partner.samsung.com>
Signed-off-by: Aaron Conole <aconole at redhat.com>
---
lib/librte_ip_frag/rte_ipv6_fragmentation.c | 9 +++++++++
lib/librte_net/rte_ip.h | 2 ++
2 files 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..5d67336f2d 100644
--- a/lib/librte_ip_frag/rte_ipv6_fragmentation.c
+++ b/lib/librte_ip_frag/rte_ipv6_fragmentation.c
@@ -79,6 +79,15 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in,
uint16_t fragment_offset, frag_size;
uint64_t frag_bytes_remaining;
+ /*
+ * Formal parameter checking.
+ */
+ if (unlikely(pkt_in == NULL) || unlikely(pkts_out == NULL) ||
+ unlikely(nb_pkts_out == 0) ||
+ unlikely(pool_direct == NULL) || unlikely(pool_indirect == NULL) ||
+ unlikely(mtu_size < RTE_IPV6_MIN_MTU))
+ return -EINVAL;
+
/*
* Ensure the IP payload length of all fragments (except the
* the last fragment) are a multiple of 8 bytes per RFC2460.
diff --git a/lib/librte_net/rte_ip.h b/lib/librte_net/rte_ip.h
index 1ceb7b7931..d50edec572 100644
--- a/lib/librte_net/rte_ip.h
+++ b/lib/librte_net/rte_ip.h
@@ -371,6 +371,8 @@ struct rte_ipv6_hdr {
#define RTE_IPV6_HDR_ECN_MASK (0x03 << RTE_IPV6_HDR_TC_SHIFT)
#define RTE_IPV6_HDR_ECN_CE RTE_IPV6_HDR_ECN_MASK
+#define RTE_IPV6_MIN_MTU 1280 /**< Minimum MTU for IPv6, see RFC 8200. */
+
/**
* Process the pseudo-header checksum of an IPv6 header.
*
--
2.25.1
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