svn commit: r356932 - stable/12/sys/dev/vmware/vmxnet3

[Vincenzo Maffione]

Author: vmaffione
Date: Mon Jan 20 22:15:33 2020
New Revision: 356932
URL: https://svnweb.freebsd.org/changeset/base/356932

Log:
  MFC r356703
  
  vmx: fix initialization of TSO related descriptor fields
  
  Fix a mistake introduced by r343291, which ported the vmx(4)
  driver to iflib.
  In case of TSO, the hlen field of the (first) tx descriptor must
  be initialized to the cumulative length of Ethernet, IP and TCP
  headers. The length of the TCP header was missing.
  
  PR:             236999
  Reported by:    pkelsey
  Reviewed by:    avg
  Differential Revision:  https://reviews.freebsd.org/D22967

Modified:
  stable/12/sys/dev/vmware/vmxnet3/if_vmx.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/dev/vmware/vmxnet3/if_vmx.c
==============================================================================
--- stable/12/sys/dev/vmware/vmxnet3/if_vmx.c	Mon Jan 20 20:27:51 2020	(r356931)
+++ stable/12/sys/dev/vmware/vmxnet3/if_vmx.c	Mon Jan 20 22:15:33 2020	(r356932)
@@ -1320,7 +1320,7 @@ vmxnet3_isc_txd_encap(void *vsc, if_pkt_info_t pi)
 	hdrlen = pi->ipi_ehdrlen + pi->ipi_ip_hlen;
 	if (pi->ipi_csum_flags & CSUM_TSO) {
 		sop->offload_mode = VMXNET3_OM_TSO;
-		sop->hlen = hdrlen;
+		sop->hlen = hdrlen + pi->ipi_tcp_hlen;
 		sop->offload_pos = pi->ipi_tso_segsz;
 	} else if (pi->ipi_csum_flags & (VMXNET3_CSUM_OFFLOAD |
 	    VMXNET3_CSUM_OFFLOAD_IPV6)) {