bsd/netinet6/ah_core.c

1199 ah_update_mbuf(m, off, len, algo, algos)
1201 	int off;
1210 	if (off + len <= m->m_len) {
1211 		(algo->update)(algos, mtod(m, caddr_t) + off, len);
1216 		if (off < n->m_len)
1219 		off -= n->m_len;
1228 		if (n->m_len - off < len)
1229 			tlen = n->m_len - off;
1233 		(algo->update)(algos, mtod(n, caddr_t) + off, tlen);
1236 		off = 0;
1256 	int off;
1271 	off = 0;
1291 		m_copydata(m, off, sizeof(iphdr), (caddr_t)&iphdr);
1324 			m_copydata(m, off, hlen, mtod(n, caddr_t));
1412 		m_copydata(m, off, sizeof(ah), (caddr_t)&ah);
1423 			if (totlen > m->m_pkthdr.len - off ||
1440 			m_copydata(m, off, totlen, mtod(n, caddr_t));
1447 			ah_update_mbuf(m, off, totlen, algo, &algos);
1456 		ah_update_mbuf(m, off, m->m_pkthdr.len - off, algo, &algos);
1457 		advancewidth = m->m_pkthdr.len - off;
1461 	off += advancewidth;
1462 	if (off < m->m_pkthdr.len)
1500 	int newoff, off;
1515 	off = 0;
1521 	newoff = ip6_nexthdr(m, off, proto, &nxt);
1524 	else if (newoff <= off) {
1534 		if (off == 0) {
1537 			if (newoff - off != sizeof(struct ip6_hdr)) {
1542 			m_copydata(m, off, newoff - off, (caddr_t)&ip6copy);
1556 			ah_update_mbuf(m, off, m->m_pkthdr.len - off, algo,
1575 			if (newoff - off > MCLBYTES) {
1580 			if (n && newoff - off > MLEN) {
1591 			m_copydata(m, off, newoff - off, mtod(n, caddr_t));
1592 			n->m_len = newoff - off;
1598 			ah_update_mbuf(m, off, newoff - off, algo, &algos);
1610 		if (newoff - off > MCLBYTES) {
1615 		if (n && newoff - off > MLEN) {
1626 		m_copydata(m, off, newoff - off, mtod(n, caddr_t));
1627 		n->m_len = newoff - off;
1631 		if (newoff - off < hdrlen) {
1682 		ah_update_mbuf(m, off, newoff - off, algo, &algos);
1688 		off = newoff;