diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c
index a4682e74e9d4..679b430c5cb2 100644
--- a/sys/dev/e1000/if_em.c
+++ b/sys/dev/e1000/if_em.c
@@ -1435,10 +1435,15 @@ em_init_locked(struct adapter *adapter)
 	*/
 	if (adapter->hw.mac.max_frame_size <= 2048)
 		adapter->rx_mbuf_sz = MCLBYTES;
+#ifndef CONTIGMALLOC_WORKS
+       else
+               adapter->rx_mbuf_sz = MJUMPAGESIZE;
+#else
 	else if (adapter->hw.mac.max_frame_size <= 4096)
 		adapter->rx_mbuf_sz = MJUMPAGESIZE;
 	else
 		adapter->rx_mbuf_sz = MJUM9BYTES;
+#endif
 
 	/* Prepare receive descriptors and buffers */
 	if (em_setup_receive_structures(adapter)) {
diff --git a/sys/dev/e1000/if_igb.c b/sys/dev/e1000/if_igb.c
index 0a8d75203b25..340ebd4a3e6b 100644
--- a/sys/dev/e1000/if_igb.c
+++ b/sys/dev/e1000/if_igb.c
@@ -1309,10 +1309,15 @@ igb_init_locked(struct adapter *adapter)
 	*/
 	if (adapter->max_frame_size <= 2048)
 		adapter->rx_mbuf_sz = MCLBYTES;
+#ifndef CONTIGMALLOC_WORKS
+       else
+               adapter->rx_mbuf_sz = MJUMPAGESIZE;
+#else
 	else if (adapter->max_frame_size <= 4096)
 		adapter->rx_mbuf_sz = MJUMPAGESIZE;
 	else
 		adapter->rx_mbuf_sz = MJUM9BYTES;
+#endif
 
 	/* Prepare receive descriptors and buffers */
 	if (igb_setup_receive_structures(adapter)) {
@@ -2857,7 +2862,7 @@ igb_init_dmac(struct adapter *adapter, u32 pba)
 			dmac = pba - 10;
 		reg = E1000_READ_REG(hw, E1000_DMACR);
 		reg &= ~E1000_DMACR_DMACTHR_MASK;
-		reg = ((dmac << E1000_DMACR_DMACTHR_SHIFT)
+		reg |= ((dmac << E1000_DMACR_DMACTHR_SHIFT)
 		    & E1000_DMACR_DMACTHR_MASK);
 
 		/* transition to L0x or L1 if available..*/
@@ -3807,7 +3812,6 @@ igb_tx_ctx_setup(struct tx_ring *txr, struct mbuf *mp,
 	int	ehdrlen, ip_hlen = 0;
 	u16	etype;
 	u8	ipproto = 0;
-	int	offload = TRUE;
 	int	ctxd = txr->next_avail_desc;
 	u16	vtag = 0;
 
@@ -3815,9 +3819,6 @@ igb_tx_ctx_setup(struct tx_ring *txr, struct mbuf *mp,
 	if (mp->m_pkthdr.csum_flags & CSUM_TSO)
 		return (igb_tso_setup(txr, mp, cmd_type_len, olinfo_status));
 
-	if ((mp->m_pkthdr.csum_flags & CSUM_OFFLOAD) == 0)
-		offload = FALSE;
-
 	/* Indicate the whole packet as payload when not doing TSO */
        	*olinfo_status |= mp->m_pkthdr.len << E1000_ADVTXD_PAYLEN_SHIFT;
 
@@ -3832,8 +3833,9 @@ igb_tx_ctx_setup(struct tx_ring *txr, struct mbuf *mp,
 	if (mp->m_flags & M_VLANTAG) {
 		vtag = htole16(mp->m_pkthdr.ether_vtag);
 		vlan_macip_lens |= (vtag << E1000_ADVTXD_VLAN_SHIFT);
-	} else if (offload == FALSE) /* ... no offload to do */
+	} else if ((mp->m_pkthdr.csum_flags & CSUM_OFFLOAD) == 0) {
 		return (0);
+	}
 
 	/*
 	 * Determine where frame payload starts.
@@ -3867,7 +3869,6 @@ igb_tx_ctx_setup(struct tx_ring *txr, struct mbuf *mp,
 			type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV6;
 			break;
 		default:
-			offload = FALSE;
 			break;
 	}
 
@@ -3877,39 +3878,41 @@ igb_tx_ctx_setup(struct tx_ring *txr, struct mbuf *mp,
 	switch (ipproto) {
 		case IPPROTO_TCP:
 #if __FreeBSD_version >= 1000000
-			if (mp->m_pkthdr.csum_flags & (CSUM_IP_TCP | CSUM_IP6_TCP))
+			if (mp->m_pkthdr.csum_flags & (CSUM_IP_TCP | CSUM_IP6_TCP)) {
 #else
-			if (mp->m_pkthdr.csum_flags & CSUM_TCP)
+			if (mp->m_pkthdr.csum_flags & CSUM_TCP) {
 #endif
 				type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
+				*olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+			}
 			break;
 		case IPPROTO_UDP:
 #if __FreeBSD_version >= 1000000
-			if (mp->m_pkthdr.csum_flags & (CSUM_IP_UDP | CSUM_IP6_UDP))
+			if (mp->m_pkthdr.csum_flags & (CSUM_IP_UDP | CSUM_IP6_UDP)) {
 #else
-			if (mp->m_pkthdr.csum_flags & CSUM_UDP)
+			if (mp->m_pkthdr.csum_flags & CSUM_UDP) {
 #endif
 				type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_UDP;
+				*olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+			}
 			break;
 
 #if __FreeBSD_version >= 800000
 		case IPPROTO_SCTP:
 #if __FreeBSD_version >= 1000000
-			if (mp->m_pkthdr.csum_flags & (CSUM_IP_SCTP | CSUM_IP6_SCTP))
+			if (mp->m_pkthdr.csum_flags & (CSUM_IP_SCTP | CSUM_IP6_SCTP)) {
 #else
-			if (mp->m_pkthdr.csum_flags & CSUM_SCTP)
+			if (mp->m_pkthdr.csum_flags & CSUM_SCTP) {
 #endif
 				type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_SCTP;
+				*olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+			}
 			break;
 #endif
 		default:
-			offload = FALSE;
 			break;
 	}
 
-	if (offload) /* For the TX descriptor setup */
-		*olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
-
 	/* 82575 needs the queue index added */
 	if (adapter->hw.mac.type == e1000_82575)
 		mss_l4len_idx = txr->me << 4;
diff --git a/sys/dev/e1000/if_lem.h b/sys/dev/e1000/if_lem.h
index 53e39f445705..e2fb1bdce8dd 100644
--- a/sys/dev/e1000/if_lem.h
+++ b/sys/dev/e1000/if_lem.h
@@ -241,7 +241,7 @@
 #define EM_MSIX_MASK		0x01F00000 /* For 82574 use */
 #define ETH_ZLEN		60
 #define ETH_ADDR_LEN		6
-#define CSUM_OFFLOAD		7	/* Offload bits in mbuf flag */
+#define CSUM_OFFLOAD		(CSUM_IP | CSUM_IP_UDP | CSUM_IP_TCP) /* Offload bits in mbuf flag */
 
 /*
  * 82574 has a nonstandard address for EIAC