svn commit: r320611 - head/sys/net

[Sean Bruno]

Author: sbruno
Date: Mon Jul  3 19:23:45 2017
New Revision: 320611
URL: https://svnweb.freebsd.org/changeset/base/320611

Log:
  iflib - flib_busdma_load_mbuf_sg used isc_tx_maxsize as max semgent size.
  
  Submitted by:	krzysztof.galazka at intel.com
  Differential Revision:	https://reviews.freebsd.org/D11403

Modified:
  head/sys/net/iflib.c

Modified: head/sys/net/iflib.c
==============================================================================
--- head/sys/net/iflib.c	Mon Jul  3 18:42:26 2017	(r320610)
+++ head/sys/net/iflib.c	Mon Jul  3 19:23:45 2017	(r320611)
@@ -2892,7 +2892,7 @@ iflib_busdma_load_mbuf_sg(iflib_txq_t txq, bus_dma_tag
 	if_ctx_t ctx;
 	if_shared_ctx_t		sctx;
 	if_softc_ctx_t		scctx;
-	int i, next, pidx, err, maxsegsz, ntxd, count;
+	int i, next, pidx, err, ntxd, count;
 	struct mbuf *m, *tmp, **ifsd_m;
 
 	m = *m0;
@@ -2935,13 +2935,17 @@ iflib_busdma_load_mbuf_sg(iflib_txq_t txq, bus_dma_tag
 			m = m->m_next;
 		} while (m != NULL);
 	} else {
-		int buflen, sgsize, max_sgsize;
+		int buflen, sgsize, maxsegsz, max_sgsize;
 		vm_offset_t vaddr;
 		vm_paddr_t curaddr;
 
 		count = i = 0;
-		maxsegsz = sctx->isc_tx_maxsize;
 		m = *m0;
+		if (m->m_pkthdr.csum_flags & CSUM_TSO)
+			maxsegsz = scctx->isc_tx_tso_segsize_max;
+		else
+			maxsegsz = sctx->isc_tx_maxsegsize;
+
 		do {
 			if (__predict_false(m->m_len <= 0)) {
 				tmp = m;