commit 5cda06d55bf533abf65636a08446002ffa455fb6
Author: Ryan Stone <rstone@FreeBSD.org>
Date:   Thu Mar 23 13:49:14 2017

    ixl: Use new interface to limit TSO segs per mss

diff --git a/sys/dev/ixl/if_ixlv.c b/sys/dev/ixl/if_ixlv.c
index 390ef51e5ce8..676bafce65f3 100644
--- a/sys/dev/ixl/if_ixlv.c
+++ b/sys/dev/ixl/if_ixlv.c
@@ -1573,6 +1573,12 @@ ixlv_setup_interface(device_t dev, struct ixlv_sc *sc)
 	    ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN
 	    + ETHER_VLAN_ENCAP_LEN;
 
+	/* Set TSO limits */
+	ifp->if_hw_tsomax = IP_MAXPACKET - (ETHER_HDR_LEN + ETHER_CRC_LEN);
+	ifp->if_hw_tsomaxsegcount = IXL_MAX_TSO_SEGS;
+	ifp->if_hw_tsomaxsegsize = PAGE_SIZE;
+	ifp->if_hw_tsomaxsegpermss = IXL_MAX_TX_SEGS;
+
 	/*
 	 * Tell the upper layer(s) we support long frames.
 	 */
diff --git a/sys/dev/ixl/ixl_pf_main.c b/sys/dev/ixl/ixl_pf_main.c
index fa271d434ec4..57282e1b9f47 100644
--- a/sys/dev/ixl/ixl_pf_main.c
+++ b/sys/dev/ixl/ixl_pf_main.c
@@ -1917,6 +1917,7 @@ ixl_setup_interface(device_t dev, struct ixl_vsi *vsi)
 	ifp->if_hw_tsomax = IP_MAXPACKET - (ETHER_HDR_LEN + ETHER_CRC_LEN);
 	ifp->if_hw_tsomaxsegcount = IXL_MAX_TSO_SEGS;
 	ifp->if_hw_tsomaxsegsize = PAGE_SIZE;
+	ifp->if_hw_tsomaxsegpermss = IXL_SPARSE_CHAIN;
 
 	/*
 	 * Tell the upper layer(s) we support long frames.
diff --git a/sys/dev/ixl/ixl_txrx.c b/sys/dev/ixl/ixl_txrx.c
index 3501ebc4cd50..36d806eee4c6 100644
--- a/sys/dev/ixl/ixl_txrx.c
+++ b/sys/dev/ixl/ixl_txrx.c
@@ -215,6 +215,7 @@ ixl_qflush(struct ifnet *ifp)
 static inline bool
 ixl_tso_detect_sparse(struct mbuf *mp)
 {
+#if __FreeBSD_version < 1200053
 	struct mbuf	*m;
 	int		num, mss;
 
@@ -235,6 +236,7 @@ ixl_tso_detect_sparse(struct mbuf *mp)
 			mss += mp->m_pkthdr.tso_segsz;
 		}
 	}
+#endif
 
 	return (false);
 }