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-rw-r--r--src/plugins/avf/output.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/plugins/avf/output.c b/src/plugins/avf/output.c
index b50a1e23c7a..decd8b5b939 100644
--- a/src/plugins/avf/output.c
+++ b/src/plugins/avf/output.c
@@ -63,9 +63,14 @@ avf_tx_prepare_cksum (vlib_buffer_t * b, u8 is_tso)
vnet_buffer_oflags_t oflags = vnet_buffer (b)->oflags;
u32 is_tcp = is_tso || oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
u32 is_udp = !is_tso && oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
+
+ if (!is_tcp && !is_udp)
+ return 0;
+
u32 is_ip4 = b->flags & VNET_BUFFER_F_IS_IP4;
u32 is_ip6 = b->flags & VNET_BUFFER_F_IS_IP6;
- ASSERT (!is_tcp || !is_udp);
+
+ ASSERT (!(is_tcp && is_udp));
ASSERT (is_ip4 || is_ip6);
i16 l2_hdr_offset = b->current_data;
i16 l3_hdr_offset = vnet_buffer (b)->l3_hdr_offset;