commit b0d511c385715d4f80b91179e41089e00c295cdf
Author: Ryota Ozaki <ozaki-r@iij.ad.jp>
Date:   Wed Dec 7 13:26:58 2016 +0900

    Move bpf_mtap in txintr to if_start

diff --git a/sys/dev/ic/sgec.c b/sys/dev/ic/sgec.c
index 670ff07..5a54011 100644
--- a/sys/dev/ic/sgec.c
+++ b/sys/dev/ic/sgec.c
@@ -421,6 +421,8 @@ zestart(struct ifnet *ifp)
 		if ((ZE_RCSR(ZE_CSR5) & ZE_NICSR5_TS) != ZE_NICSR5_TS_RUN)
 			ZE_WCSR(ZE_CSR1, -1);
 		sc->sc_nexttx = nexttx;
+
+		bpf_mtap(ifp, m);
 	}
 	if (sc->sc_inq == (TXDESCS - 1))
 		ifp->if_flags |= IFF_OACTIVE;
@@ -504,7 +506,6 @@ sgec_intr(struct ze_softc *sc)
 			ifp->if_opackets++;
 			bus_dmamap_unload(sc->sc_dmat, map);
 			KASSERT(sc->sc_txmbuf[lastack]);
-			bpf_mtap(ifp, sc->sc_txmbuf[lastack]);
 			m_freem(sc->sc_txmbuf[lastack]);
 			sc->sc_txmbuf[lastack] = 0;
 			if (++lastack == TXDESCS)
diff --git a/sys/dev/pci/if_de.c b/sys/dev/pci/if_de.c
index e97b4fe..3f91b8b 100644
--- a/sys/dev/pci/if_de.c
+++ b/sys/dev/pci/if_de.c
@@ -3894,8 +3894,6 @@ tulip_tx_intr(
 		    TULIP_TXMAP_POSTSYNC(sc, map);
 		    tulip_free_txmap(sc, map);
 #endif /* TULIP_BUS_DMA */
-		    if (sc->tulip_bpf != NULL)
-			bpf_mtap(&sc->tulip_if, m);
 		    m_freem(m);
 #if defined(TULIP_DEBUG)
 		} else {
@@ -4548,6 +4546,8 @@ tulip_txput(
     } while ((m0 = m0->m_next) != NULL);
 #endif /* TULIP_BUS_DMA */
 
+    if (sc->tulip_bpf != NULL)
+	bpf_mtap(&sc->tulip_if, m);
     /*
      * The descriptors have been filled in.  Now get ready
      * to transmit.