ip_input.c File Reference

#include "opt_ipfw.h"
#include <stddef.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/route.h>
#include <net/netisr.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
#include <netinet/ip_var.h>
#include <netinet/ip_icmp.h>
#include <machine/in_cksum.h>
#include <sys/socketvar.h>

Include dependency graph for ip_input.c:

Data Structures
struct	ip_srcrt

Macros
#define	_IP_VHL
#define	IPREASS_NHASH_LOG2   6
#define	IPREASS_NHASH   (1 << IPREASS_NHASH_LOG2)
#define	IPREASS_HMASK   (IPREASS_NHASH - 1)
#define	IPREASS_HASH(x, y)   (((((x) & 0xF) | ((((x) >> 8) & 0xF) << 4)) ^ (y)) & IPREASS_HMASK)
#define	COMPAT_IPFW   1
#define	satosin(sa)   ((struct sockaddr_in *)(sa))
#define	INA   struct in_ifaddr *
#define	SA   struct sockaddr *
#define	OPTSIZ   (sizeof(ip_srcrt.nop) + sizeof(ip_srcrt.srcopt))
#define	satosin(sa)   ((struct sockaddr_in *)(sa))
#define	RTA(rt)   ((struct in_ifaddr *)(rt->rt_ifa))

Functions
	SYSCTL_INT (_net_inet_ip, IPCTL_FORWARDING, forwarding, CTLFLAG_RW, &ipforwarding, 0, "Enable IP forwarding between interfaces")
	SYSCTL_INT (_net_inet_ip, IPCTL_SENDREDIRECTS, redirect, CTLFLAG_RW, &ipsendredirects, 0, "Enable sending IP redirects")
	SYSCTL_INT (_net_inet_ip, IPCTL_DEFTTL, ttl, CTLFLAG_RW, &ip_defttl, 0, "Maximum TTL on IP packets")
	SYSCTL_INT (_net_inet_ip, IPCTL_SOURCEROUTE, sourceroute, CTLFLAG_RW, &ip_dosourceroute, 0, "")
	SYSCTL_INT (_net_inet_ip, IPCTL_ACCEPTSOURCEROUTE, accept_sourceroute, CTLFLAG_RW, &ip_acceptsourceroute, 0, "")
	SYSCTL_INT (_net_inet_ip, IPCTL_INTRQMAXLEN, intr_queue_maxlen, CTLFLAG_RD, &ipintrq.ifq_maxlen, 0, "")
	SYSCTL_INT (_net_inet_ip, IPCTL_INTRQDROPS, intr_queue_drops, CTLFLAG_RD, &ipintrq.ifq_drops, 0, "Number of packets dropped from the IP input queue")
void	ipintr (void)
void	ip_init (void)
void	ip_input (struct mbuf *m)
	NETISR_SET (NETISR_IP, ipintr)
void	ip_slowtimo (void)
void	ip_drain (void)
struct mbuf *	ip_srcroute (void)
void	ip_stripoptions (struct mbuf *m, struct mbuf *mopt)
void	ip_savecontrol (struct inpcb *inp, struct mbuf **mp, struct ip *ip, struct mbuf *m)
int	ip_rsvp_init (struct socket *so)
int	ip_rsvp_done (void)

Variables
int	rsvp_on = 0
struct socket *	ip_rsvpd
int	ipforwarding = 0
int	ip_defttl = IPDEFTTL
struct domain	inetdomain
struct protosw	inetsw []
u_char	ip_protox [IPPROTO_MAX]
struct in_ifaddr *	in_ifaddr
struct ifqueue	ipintrq
struct ipstat	ipstat
ip_fw_chk_t *	ip_fw_chk_ptr
ip_fw_ctl_t *	ip_fw_ctl_ptr
ip_nat_t *	ip_nat_ptr
ip_nat_ctl_t *	ip_nat_ctl_ptr
u_char	inetctlerrmap [PRC_NCMDS]

Variable Documentation

inetctlerrmap

u_char inetctlerrmap[PRC_NCMDS]

Initial value:

= {
        0,              0,              0,              0,
        0,              EMSGSIZE,       EHOSTDOWN,      EHOSTUNREACH,
        EHOSTUNREACH,   EHOSTUNREACH,   ECONNREFUSED,   ECONNREFUSED,
        EMSGSIZE,       EHOSTUNREACH,   0,              0,
        0,              0,              0,              0,
        ENOPROTOOPT
}