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-rw-r--r--src/vnet/buffer.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/vnet/buffer.h b/src/vnet/buffer.h
index 97dd31c1979..5a3bc3fc279 100644
--- a/src/vnet/buffer.h
+++ b/src/vnet/buffer.h
@@ -427,7 +427,10 @@ STATIC_ASSERT (sizeof (vnet_buffer_opaque2_t) <=
STRUCT_SIZE_OF (vlib_buffer_t, opaque2),
"VNET buffer opaque2 meta-data too large for vlib_buffer");
-#define gso_mtu_sz(b) (vnet_buffer2(b)->gso_size + vnet_buffer2(b)->gso_l4_hdr_sz + vnet_buffer(b)->l4_hdr_offset)
+#define gso_mtu_sz(b) (vnet_buffer2(b)->gso_size + \
+ vnet_buffer2(b)->gso_l4_hdr_sz + \
+ vnet_buffer(b)->l4_hdr_offset - \
+ vnet_buffer (b)->l3_hdr_offset)
format_function_t format_vnet_buffer;