Re: [PATCH v1 2/2] drivers: net: xgene: Adding support for TSO

From: Iyappan Subramanian <redacted>
Date: Mon, 17 Aug 2015 14:33:05 -0700

+			/* HW requires all header resides in the first buffer */
+			if (skb_is_nonlinear(skb) &&
+			    (skb_headlen(skb) < hdr_len)) {
+				netdev_warn(ndev, "Headers are required to reside in header buffer\n");
+				dev_kfree_skb(skb);
+				return 0;
+			}

You can't just drop the packet in this situation.

Instead, you must at least try to linearize the header to fit your
needs.