D4131.id10125.diff
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D4131.id10125.diff
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	Index: sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
	===================================================================
	--- sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
	+++ sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
	@@ -128,6 +128,9 @@
	#define HV_NV_SC_PTR_OFFSET_IN_BUF 0
	#define HV_NV_PACKET_OFFSET_IN_BUF 16

	+#define CSUM_FOR_OUTBOUND \
	+ (CSUM_IP\|CSUM_IP_UDP\|CSUM_IP_TCP\|CSUM_IP_SCTP\|CSUM_IP_TSO\|CSUM_IP_ISCSI\| \
	+ CSUM_IP6_UDP\|CSUM_IP6_TCP\|CSUM_IP6_SCTP\|CSUM_IP6_TSO\|CSUM_IP6_ISCSI)

	/*
	* Data types
	@@ -570,7 +573,8 @@
	packet->vlan_tci & 0xfff;
	}

	- if (0 == m_head->m_pkthdr.csum_flags) {
	+ /* Ignore flags for checksum already calculated or valid */
	+ if (0 == (m_head->m_pkthdr.csum_flags & CSUM_FOR_OUTBOUND)) {
	goto pre_send;
	}