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33 * @(#)ip_var.h 8.2 (Berkeley) 1/9/95
37 #ifndef _NETINET_IP_VAR_H_
38 #define _NETINET_IP_VAR_H_
41 * Overlay for ip header used by other protocols (tcp, udp).
44 u_char ih_x1[9]; /* (unused) */
45 u_char ih_pr; /* protocol */
46 u_short ih_len; /* protocol length */
47 struct in_addr ih_src; /* source internet address */
48 struct in_addr ih_dst; /* destination internet address */
52 * Ip reassembly queue structure. Each fragment
53 * being reassembled is attached to one of these structures.
54 * They are timed out after ipq_ttl drops to 0, and may also
55 * be reclaimed if memory becomes tight.
58 struct ipq *next,*prev; /* to other reass headers */
59 u_char ipq_ttl; /* time for reass q to live */
60 u_char ipq_p; /* protocol of this fragment */
61 u_short ipq_id; /* sequence id for reassembly */
62 struct mbuf *ipq_frags; /* to ip headers of fragments */
63 struct in_addr ipq_src,ipq_dst;
65 u_short ipq_divert; /* divert protocol port */
66 u_short ipq_div_cookie; /* divert protocol cookie */
71 * Structure stored in mbuf in inpcb.ip_options
72 * and passed to ip_output when ip options are in use.
73 * The actual length of the options (including ipopt_dst)
76 #define MAX_IPOPTLEN 40
79 struct in_addr ipopt_dst; /* first-hop dst if source routed */
80 char ipopt_list[MAX_IPOPTLEN]; /* options proper */
84 * Structure attached to inpcb.ip_moptions and
85 * passed to ip_output when IP multicast options are in use.
88 struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */
89 u_char imo_multicast_ttl; /* TTL for outgoing multicasts */
90 u_char imo_multicast_loop; /* 1 => hear sends if a member */
91 u_short imo_num_memberships; /* no. memberships this socket */
92 struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS];
93 u_long imo_multicast_vif; /* vif num outgoing multicasts */
97 u_long ips_total; /* total packets received */
98 u_long ips_badsum; /* checksum bad */
99 u_long ips_tooshort; /* packet too short */
100 u_long ips_toosmall; /* not enough data */
101 u_long ips_badhlen; /* ip header length < data size */
102 u_long ips_badlen; /* ip length < ip header length */
103 u_long ips_fragments; /* fragments received */
104 u_long ips_fragdropped; /* frags dropped (dups, out of space) */
105 u_long ips_fragtimeout; /* fragments timed out */
106 u_long ips_forward; /* packets forwarded */
107 u_long ips_fastforward; /* packets fast forwarded */
108 u_long ips_cantforward; /* packets rcvd for unreachable dest */
109 u_long ips_redirectsent; /* packets forwarded on same net */
110 u_long ips_noproto; /* unknown or unsupported protocol */
111 u_long ips_delivered; /* datagrams delivered to upper level*/
112 u_long ips_localout; /* total ip packets generated here */
113 u_long ips_odropped; /* lost packets due to nobufs, etc. */
114 u_long ips_reassembled; /* total packets reassembled ok */
115 u_long ips_fragmented; /* datagrams successfully fragmented */
116 u_long ips_ofragments; /* output fragments created */
117 u_long ips_cantfrag; /* don't fragment flag was set, etc. */
118 u_long ips_badoptions; /* error in option processing */
119 u_long ips_noroute; /* packets discarded due to no route */
120 u_long ips_badvers; /* ip version != 4 */
121 u_long ips_rawout; /* total raw ip packets generated */
122 u_long ips_toolong; /* ip length > max ip packet size */
123 u_long ips_notmember; /* multicasts for unregistered grps */
124 u_long ips_nogif; /* no match gif found */
129 /* flags passed to ip_output as last parameter */
130 #define IP_FORWARDING 0x1 /* most of ip header exists */
131 #define IP_RAWOUTPUT 0x2 /* raw ip header exists */
132 #define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */
133 #define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */
140 extern struct ipstat ipstat;
141 extern u_short ip_id; /* ip packet ctr, for ids */
142 extern int ip_defttl; /* default IP ttl */
143 extern int ipforwarding; /* ip forwarding */
144 extern u_char ip_protox[];
145 extern struct socket *ip_rsvpd; /* reservation protocol daemon */
146 extern struct socket *ip_mrouter; /* multicast routing daemon */
147 extern int (*legal_vif_num) __P((int));
148 extern u_long (*ip_mcast_src) __P((int));
150 extern struct pr_usrreqs rip_usrreqs;
152 int ip_ctloutput __P((struct socket *, struct sockopt *sopt));
153 void ip_drain __P((void));
154 void ip_freemoptions __P((struct ip_moptions *));
155 void ip_init __P((void));
156 extern int (*ip_mforward) __P((struct ip *, struct ifnet *, struct mbuf *,
157 struct ip_moptions *));
158 int ip_output __P((struct mbuf *,
159 struct mbuf *, struct route *, int, struct ip_moptions *));
160 void ip_savecontrol __P((struct inpcb *, struct mbuf **, struct ip *,
162 void ip_slowtimo __P((void));
164 ip_srcroute __P((void));
165 void ip_stripoptions __P((struct mbuf *, struct mbuf *));
166 int rip_ctloutput __P((struct socket *, struct sockopt *));
167 void rip_ctlinput __P((int, struct sockaddr *, void *));
168 void rip_init __P((void));
169 void rip_input __P((struct mbuf *, int));
170 int rip_output __P((struct mbuf *, struct socket *, u_long));
171 void ipip_input __P((struct mbuf *, int));
172 void rsvp_input __P((struct mbuf *, int));
173 int ip_rsvp_init __P((struct socket *));
174 int ip_rsvp_done __P((void));
175 int ip_rsvp_vif_init __P((struct socket *, struct sockopt *));
176 int ip_rsvp_vif_done __P((struct socket *, struct sockopt *));
177 void ip_rsvp_force_done __P((struct socket *));
180 void div_init __P((void));
181 void div_input __P((struct mbuf *, int));
182 extern struct pr_usrreqs div_usrreqs;
183 extern u_short ip_divert_port;
184 extern u_short ip_divert_cookie;
187 extern struct sockaddr_in *ip_fw_fwd_addr;
191 #endif /* !_NETINET_IP_VAR_H_ */