src/sys/netinet/ip_input.c - diff

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version 1.20, 1995/06/04 05:58:26

version 1.21, 1995/06/07 16:01:15

Line 96 static struct ip_srcrt {

struct in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)];

} ip_srcrt;

#ifdef GATEWAY

extern int if_index;

u_int32_t *ip_ifmatrix;

#endif

static void save_rte __P((u_char *, struct in_addr));

* IP initialization: fill in IP protocol switch table.

Line 125 ip_init()

Line 120 ip_init()

ipq.next = ipq.prev = &ipq;

ip_id = time.tv_sec & 0xffff;

ipintrq.ifq_maxlen = ipqmaxlen;

#ifdef GATEWAY

i = (if_index + 1) * (if_index + 1) * sizeof (u_int32_t);

ip_ifmatrix = (u_int32_t *) malloc(i, M_RTABLE, M_WAITOK);

bzero((char *)ip_ifmatrix, i);

#endif

}

struct sockaddr_in ipaddr = { sizeof(ipaddr), AF_INET };

Line 1054 ip_forward(m, srcrt)

Line 1044 ip_forward(m, srcrt)

mcopy = m_copy(m, 0, imin((int)ip->ip_len, 64));

#ifdef GATEWAY

ip_ifmatrix[rt->rt_ifp->if_index +

if_index * m->m_pkthdr.rcvif->if_index]++;

#endif

* If forwarding packet using same interface that it came in on,

* perhaps should send a redirect to sender to shortcut a hop.