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Convert ipfilter to the new routing KPI.

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Differential Revision:	D4764
This commit is contained in:
Alexander V. Chernikov 2016-01-10 07:50:35 +00:00
parent 6437b8e7d9
commit 5d86098e84
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=293628
1 changed files with 29 additions and 40 deletions
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69
sys/contrib/ipfilter/netinet/ip_fil_freebsd.c
View file

@ -50,6 +50,7 @@ static const char rcsid[] = "@(#)$Id$";
# include <net/netisr.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_fib.h>
#include <netinet/in_var.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
@ -712,17 +713,16 @@ ipf_fastroute(m0, mpp, fin, fdp)
{
register struct ip *ip, *mhip;
register struct mbuf *m = *mpp;
register struct route *ro;
int len, off, error = 0, hlen, code;
struct ifnet *ifp, *sifp;
struct sockaddr_in *dst;
struct route iproute;
struct sockaddr_in dst;
struct nhop4_extended nh4;
int has_nhop = 0;
u_long fibnum = 0;
u_short ip_off;
frdest_t node;
frentry_t *fr;
ro = NULL;
#ifdef M_WRITABLE
/*
* HOT FIX/KLUDGE:
@ -766,11 +766,10 @@ ipf_fastroute(m0, mpp, fin, fdp)
/*
* Route packet.
*/
ro = &iproute;
bzero(ro, sizeof (*ro));
dst = (struct sockaddr_in *)&ro->ro_dst;
dst->sin_family = AF_INET;
dst->sin_addr = ip->ip_dst;
bzero(&dst, sizeof (dst));
dst.sin_family = AF_INET;
dst.sin_addr = ip->ip_dst;
dst.sin_len = sizeof(dst);
fr = fin->fin_fr;
if ((fr != NULL) && !(fr->fr_flags & FR_KEEPSTATE) && (fdp != NULL) &&
@ -790,25 +789,22 @@ ipf_fastroute(m0, mpp, fin, fdp)
}
if ((fdp != NULL) && (fdp->fd_ip.s_addr != 0))
dst->sin_addr = fdp->fd_ip;
dst.sin_addr = fdp->fd_ip;
dst->sin_len = sizeof(*dst);
in_rtalloc(ro, M_GETFIB(m0));
if ((ifp == NULL) && (ro->ro_rt != NULL))
ifp = ro->ro_rt->rt_ifp;
if ((ro->ro_rt == NULL) || (ifp == NULL)) {
fibnum = M_GETFIB(m0);
if (fib4_lookup_nh_ext(fibnum, dst.sin_addr, NHR_REF, 0, &nh4) != 0) {
if (in_localaddr(ip->ip_dst))
error = EHOSTUNREACH;
else
error = ENETUNREACH;
goto bad;
}
if (ro->ro_rt->rt_flags & RTF_GATEWAY)
dst = (struct sockaddr_in *)ro->ro_rt->rt_gateway;
if (ro->ro_rt)
counter_u64_add(ro->ro_rt->rt_pksent, 1);
has_nhop = 1;
if (ifp == NULL)
ifp = nh4.nh_ifp;
if (nh4.nh_flags & NHF_GATEWAY)
dst.sin_addr = nh4.nh_addr;
/*
* For input packets which are being "fastrouted", they won't
@ -852,8 +848,8 @@ ipf_fastroute(m0, mpp, fin, fdp)
if (ntohs(ip->ip_len) <= ifp->if_mtu) {
if (!ip->ip_sum)
ip->ip_sum = in_cksum(m, hlen);
error = (*ifp->if_output)(ifp, m, (struct sockaddr *)dst,
ro
error = (*ifp->if_output)(ifp, m, (struct sockaddr *)&dst,
NULL
);
goto done;
}
@ -935,8 +931,8 @@ ipf_fastroute(m0, mpp, fin, fdp)
m->m_act = 0;
if (error == 0)
error = (*ifp->if_output)(ifp, m,
(struct sockaddr *)dst,
ro
(struct sockaddr *)&dst,
NULL
);
else
FREE_MB_T(m);
@ -948,9 +944,9 @@ ipf_fastroute(m0, mpp, fin, fdp)
else
ipfmain.ipf_frouteok[1]++;
if ((ro != NULL) && (ro->ro_rt != NULL)) {
RTFREE(ro->ro_rt);
}
if (has_nhop)
fib4_free_nh_ext(fibnum, &nh4);
return 0;
bad:
if (error == EMSGSIZE) {
@ -971,18 +967,11 @@ int
ipf_verifysrc(fin)
fr_info_t *fin;
{
struct sockaddr_in *dst;
struct route iproute;
struct nhop4_basic nh4;
bzero((char *)&iproute, sizeof(iproute));
dst = (struct sockaddr_in *)&iproute.ro_dst;
dst->sin_len = sizeof(*dst);
dst->sin_family = AF_INET;
dst->sin_addr = fin->fin_src;
in_rtalloc(&iproute, 0);
if (iproute.ro_rt == NULL)
return 0;
return (fin->fin_ifp == iproute.ro_rt->rt_ifp);
if (fib4_lookup_nh_basic(0, fin->fin_src, 0, 0, &nh4) != 0)
return (0);
return (fin->fin_ifp == nh4.nh_ifp);
}