bsd/netinet/ip_output.c

275 	int isbroadcast, sw_csum;
1630 	sw_csum = m->m_pkthdr.csum_flags
1647 			sw_csum = CSUM_DELAY_IP; /* do IP hdr chksum in software */
1650 			sw_csum |= (CSUM_DELAY_DATA & m->m_pkthdr.csum_flags);
1653 		sw_csum |= (CSUM_DELAY_DATA | CSUM_DELAY_IP) &
1657 	if (sw_csum & CSUM_DELAY_DATA) {
1659 		sw_csum &= ~CSUM_DELAY_DATA;
1686 		if (sw_csum & CSUM_DELAY_IP) {
1766 	error = ip_fragment(m, ifp, ifp->if_mtu, sw_csum);
1829 ip_fragment(struct mbuf *m, struct ifnet *ifp, unsigned long mtu, int sw_csum)
1913 		if (sw_csum & CSUM_DELAY_IP) {
1942 	if (sw_csum & CSUM_DELAY_IP) {
2997 	int sw_csum = (apple_hwcksum_tx == 0);
3047         if (sw_csum || (copym->m_pkthdr.csum_flags & CSUM_DELAY_DATA)) {
3048 		if (!sw_csum && IF_HWASSIST_CSUM_FLAGS(ifp->if_hwassist)) {