122 	int hlen, plen, proto;  in tcpmod_ipv6_setmss()  local
125 	hlen = sizeof(*ip6);  in tcpmod_ipv6_setmss()
135 		hbh = mtodo(*mp, hlen);  in tcpmod_ipv6_setmss()
137 		hlen += (hbh->ip6h_len + 1) << 3;  in tcpmod_ipv6_setmss()
139 	tcp = mtodo(*mp, hlen);  in tcpmod_ipv6_setmss()
140 	plen = (*mp)->m_pkthdr.len - hlen;  in tcpmod_ipv6_setmss()
141 	hlen = tcp->th_off << 2;  in tcpmod_ipv6_setmss()
143 	if (hlen <= sizeof(struct tcphdr) || hlen > plen)  in tcpmod_ipv6_setmss()
145 	return (tcpmod_setmss(mp, tcp, hlen, mss));  in tcpmod_ipv6_setmss()
155 	int hlen, plen;  in tcpmod_ipv4_setmss()  local
158 	hlen = ip->ip_hl << 2;  in tcpmod_ipv4_setmss()
159 	tcp = mtodo(*mp, hlen);  in tcpmod_ipv4_setmss()
160 	plen = (*mp)->m_pkthdr.len - hlen;  in tcpmod_ipv4_setmss()
161 	hlen = tcp->th_off << 2;  in tcpmod_ipv4_setmss()
163 	if (hlen <= sizeof(struct tcphdr) || hlen > plen)  in tcpmod_ipv4_setmss()
165 	return (tcpmod_setmss(mp, tcp, hlen, mss));  in tcpmod_ipv4_setmss()