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Remove route caching from IP multicast routing code. There is no

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reason to do that, and also, cached route never got unreferenced,
which meant a reference leak.

Reviewed by:	bms
This commit is contained in:
Gleb Smirnoff 2012-07-02 19:44:18 +00:00
parent f0d0cee0be
commit 3df6468a2d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=238016
4 changed files with 17 additions and 18 deletions
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3
sys/netinet/ip_mroute.c
View File

@ -924,7 +924,6 @@ add_vif(struct vifctl *vifcp)
vifp->v_pkt_out = 0;
vifp->v_bytes_in = 0;
vifp->v_bytes_out = 0;
bzero(&vifp->v_route, sizeof(vifp->v_route));
/* Adjust numvifs up if the vifi is higher than numvifs */
if (V_numvifs <= vifcp->vifc_vifi)
@ -1702,7 +1701,7 @@ send_packet(struct vif *vifp, struct mbuf *m)
* should get rejected because they appear to come from
* the loopback interface, thus preventing looping.
*/
error = ip_output(m, NULL, &vifp->v_route, IP_FORWARDING, &imo, NULL);
error = ip_output(m, NULL, NULL, IP_FORWARDING, &imo, NULL);
CTR3(KTR_IPMF, "%s: vif %td err %d", __func__,
(ptrdiff_t)(vifp - V_viftable), error);
}

1
sys/netinet/ip_mroute.h
View File

@ -262,7 +262,6 @@ struct vif {
u_long v_pkt_out; /* # pkts out on interface */
u_long v_bytes_in; /* # bytes in on interface */
u_long v_bytes_out; /* # bytes out on interface */
struct route v_route; /* cached route */
};
#ifdef _KERNEL

30
sys/netinet6/ip6_mroute.c
View File

@ -717,7 +717,6 @@ add_m6if(struct mif6ctl *mifcp)
mifp->m6_pkt_out = 0;
mifp->m6_bytes_in = 0;
mifp->m6_bytes_out = 0;
bzero(&mifp->m6_route, sizeof(mifp->m6_route));
/* Adjust nummifs up if the mifi is higher than nummifs */
if (nummifs <= mifcp->mif6c_mifi)
@ -1576,11 +1575,8 @@ phyint_send(struct ip6_hdr *ip6, struct mif6 *mifp, struct mbuf *m)
struct mbuf *mb_copy;
struct ifnet *ifp = mifp->m6_ifp;
int error = 0;
struct sockaddr_in6 *dst6;
u_long linkmtu;
dst6 = &mifp->m6_route.ro_dst;
/*
* Make a new reference to the packet; make sure that
* the IPv6 header is actually copied, not just referenced,
@ -1610,8 +1606,8 @@ phyint_send(struct ip6_hdr *ip6, struct mif6 *mifp, struct mbuf *m)
/* XXX: ip6_output will override ip6->ip6_hlim */
im6o.im6o_multicast_hlim = ip6->ip6_hlim;
im6o.im6o_multicast_loop = 1;
error = ip6_output(mb_copy, NULL, &mifp->m6_route,
IPV6_FORWARDING, &im6o, NULL, NULL);
error = ip6_output(mb_copy, NULL, NULL, IPV6_FORWARDING, &im6o,
NULL, NULL);
#ifdef MRT6DEBUG
if (V_mrt6debug & DEBUG_XMIT)
@ -1626,10 +1622,13 @@ phyint_send(struct ip6_hdr *ip6, struct mif6 *mifp, struct mbuf *m)
* loop back a copy now.
*/
if (in6_mcast_loop) {
dst6->sin6_len = sizeof(struct sockaddr_in6);
dst6->sin6_family = AF_INET6;
dst6->sin6_addr = ip6->ip6_dst;
ip6_mloopback(ifp, m, &mifp->m6_route.ro_dst);
struct sockaddr_in6 dst6;
bzero(&dst6, sizeof(dst6));
dst6.sin6_len = sizeof(struct sockaddr_in6);
dst6.sin6_family = AF_INET6;
dst6.sin6_addr = ip6->ip6_dst;
ip6_mloopback(ifp, m, &dst6);
}
/*
@ -1638,15 +1637,18 @@ phyint_send(struct ip6_hdr *ip6, struct mif6 *mifp, struct mbuf *m)
*/
linkmtu = IN6_LINKMTU(ifp);
if (mb_copy->m_pkthdr.len <= linkmtu || linkmtu < IPV6_MMTU) {
dst6->sin6_len = sizeof(struct sockaddr_in6);
dst6->sin6_family = AF_INET6;
dst6->sin6_addr = ip6->ip6_dst;
struct sockaddr_in6 dst6;
bzero(&dst6, sizeof(dst6));
dst6.sin6_len = sizeof(struct sockaddr_in6);
dst6.sin6_family = AF_INET6;
dst6.sin6_addr = ip6->ip6_dst;
/*
* We just call if_output instead of nd6_output here, since
* we need no ND for a multicast forwarded packet...right?
*/
error = (*ifp->if_output)(ifp, mb_copy,
(struct sockaddr *)&mifp->m6_route.ro_dst, NULL);
(struct sockaddr *)&dst6, NULL);
#ifdef MRT6DEBUG
if (V_mrt6debug & DEBUG_XMIT)
log(LOG_DEBUG, "phyint_send on mif %d err %d\n",

1
sys/netinet6/ip6_mroute.h
View File

@ -212,7 +212,6 @@ struct mif6 {
u_quad_t m6_pkt_out; /* # pkts out on interface */
u_quad_t m6_bytes_in; /* # bytes in on interface */
u_quad_t m6_bytes_out; /* # bytes out on interface */
struct route_in6 m6_route; /* cached route */
#ifdef notyet
u_int m6_rsvp_on; /* RSVP listening on this vif */
struct socket *m6_rsvpd; /* RSVP daemon socket */