Index: if_myx.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/if_myx.c,v
retrieving revision 1.103
diff -u -p -r1.103 if_myx.c
--- if_myx.c	1 Aug 2017 01:11:35 -0000	1.103
+++ if_myx.c	4 Mar 2019 10:44:46 -0000
@@ -1102,7 +1102,7 @@ myx_up(struct myx_softc *sc)
 	}
 
 	memset(&mc, 0, sizeof(mc));
-	if (myx_cmd(sc, MYXCMD_FC_DEFAULT, &mc, NULL) != 0) {
+	if (myx_cmd(sc, MYXCMD_UNSET_FC, &mc, NULL) != 0) {
 		printf("%s: failed to configure flow control\n", DEVNAME(sc));
 		goto free_intrq;
 	}
@@ -1703,7 +1703,7 @@ myx_rxeof(struct myx_softc *sc)
 	struct myx_rx_ring *mrr;
 	struct myx_slot *ms;
 	struct mbuf *m;
-	int ring;
+	int ring, livelocked;
 	u_int rxfree[2] = { 0 , 0 };
 	u_int len;
 
@@ -1741,6 +1741,8 @@ myx_rxeof(struct myx_softc *sc)
 	bus_dmamap_sync(sc->sc_dmat, sc->sc_intrq_dma.mxm_map, 0,
 	    sc->sc_intrq_dma.mxm_map->dm_mapsize, BUS_DMASYNC_PREREAD);
 
+	livelocked = ifiq_input(&ifp->if_rcv, &ml);
+
 	for (ring = MYX_RXSMALL; ring <= MYX_RXBIG; ring++) {
 		if (rxfree[ring] == 0)
 			continue;
@@ -1748,12 +1750,12 @@ myx_rxeof(struct myx_softc *sc)
 		mrr = &sc->sc_rx_ring[ring];
 
 		if_rxr_put(&mrr->mrr_rxr, rxfree[ring]);
+		if (livelocked)
+			if_rxr_livelocked(&mrr->mrr_rxr);
 		myx_rx_fill(sc, mrr);
 		if (mrr->mrr_prod == mrr->mrr_cons)
 			timeout_add(&mrr->mrr_refill, 0);
 	}
-
-	if_input(ifp, &ml);
 }
 
 static int