Symbol: VIRTIO_NET_HDR_GSO_ECN
sys/dev/netmap/netmap_kern.h
2237
#define VIRTIO_NET_HDR_GSO_ECN 0x80 /* TCP has ECN set */
sys/dev/virtio/network/virtio_net.h
111
#define VIRTIO_NET_HDR_GSO_ECN 0x80 /* TCP has ECN set */