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* 3: if we always need to attach fragment header (alwaysfrag == 1)		* 3: if we always need to attach fragment header (alwaysfrag == 1)
* always fragment		* always fragment
*		*
* 4: if dontfrag == 1 && alwaysfrag == 1		* 4: if dontfrag == 1 && alwaysfrag == 1
* error, as we cannot handle this conflicting request.		* error, as we cannot handle this conflicting request.
*/		*/
sw_csum = m->m_pkthdr.csum_flags;		sw_csum = m->m_pkthdr.csum_flags;
if (!hdrsplit) {		if (!hdrsplit) {
tso = ((sw_csum & ifp->if_hwassist & CSUM_TSO) != 0) ? 1 : 0;		tso = ((sw_csum & ifp->if_hwassist &
		(CSUM_TSO \| CSUM_INNER_TSO)) != 0) ? 1 : 0;
sw_csum &= ~ifp->if_hwassist;		sw_csum &= ~ifp->if_hwassist;
} else		} else
tso = 0;		tso = 0;
/*		/*
* If we added extension headers, we will not do TSO and calculate the		* If we added extension headers, we will not do TSO and calculate the
* checksums ourselves for now.		* checksums ourselves for now.
* XXX-BZ Need a framework to know when the NIC can handle it, even		* XXX-BZ Need a framework to know when the NIC can handle it, even
* with ext. hdrs.		* with ext. hdrs.
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