Index: head/sys/dev/hyperv/netvsc/if_hn.c =================================================================== --- head/sys/dev/hyperv/netvsc/if_hn.c +++ head/sys/dev/hyperv/netvsc/if_hn.c @@ -1924,17 +1924,20 @@ static int hn_txpkt(struct ifnet *ifp, struct hn_tx_ring *txr, struct hn_txdesc *txd) { - int error, send_failed = 0; + int error, send_failed = 0, has_bpf; again: - /* - * Make sure that this txd and any aggregated txds are not freed - * before ETHER_BPF_MTAP. - */ - hn_txdesc_hold(txd); + has_bpf = bpf_peers_present(ifp->if_bpf); + if (has_bpf) { + /* + * Make sure that this txd and any aggregated txds are not + * freed before ETHER_BPF_MTAP. + */ + hn_txdesc_hold(txd); + } error = txr->hn_sendpkt(txr, txd); if (!error) { - if (bpf_peers_present(ifp->if_bpf)) { + if (has_bpf) { const struct hn_txdesc *tmp_txd; ETHER_BPF_MTAP(ifp, txd->m); @@ -1957,7 +1960,8 @@ txr->hn_pkts += txr->hn_stat_pkts; txr->hn_sends++; } - hn_txdesc_put(txr, txd); + if (has_bpf) + hn_txdesc_put(txr, txd); if (__predict_false(error)) { int freed;