D9120.diff
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	Index: head/sys/dev/sfxge/sfxge_tx.c
	===================================================================
	--- head/sys/dev/sfxge/sfxge_tx.c
	+++ head/sys/dev/sfxge/sfxge_tx.c
	@@ -363,8 +363,22 @@

	KASSERT(!txq->blocked, ("txq->blocked"));

	+#if SFXGE_TX_PARSE_EARLY
	+ /*
	+ * If software TSO is used, we still need to copy packet header,
	+ * even if we have already parsed it early before enqueue.
	+ */
	+ if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) &&
	+ (txq->tso_fw_assisted == 0))
	+ prefetch_read_many(mbuf->m_data);
	+#else
	+ /*
	+ * Prefetch packet header since we need to parse it and extract
	+ * IP ID, TCP sequence number and flags.
	+ */
	if (mbuf->m_pkthdr.csum_flags & CSUM_TSO)
	prefetch_read_many(mbuf->m_data);
	+#endif

	if (__predict_false(txq->init_state != SFXGE_TXQ_STARTED)) {
	rc = EINTR;