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-rw-r--r--sys/net/if.c26
-rw-r--r--sys/net/if.h5
-rw-r--r--sys/netinet6/in6_src.c45
-rw-r--r--sys/netinet6/ip6_mroute.c4
-rw-r--r--sys/netinet6/ip6_output.c37
5 files changed, 54 insertions, 63 deletions
diff --git a/sys/net/if.c b/sys/net/if.c
index 7b240389444..6d6f5cc70fb 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: if.c,v 1.251 2013/03/15 20:45:34 tedu Exp $ */
+/* $OpenBSD: if.c,v 1.252 2013/03/20 10:34:12 mpi Exp $ */
/* $NetBSD: if.c,v 1.35 1996/05/07 05:26:04 thorpej Exp $ */
/*
@@ -190,8 +190,8 @@ ifinit()
if_slowtimo(&if_slowtim);
}
-static int if_index = 0;
-int if_indexlim = 0;
+static unsigned int if_index = 0;
+static unsigned int if_indexlim = 0;
struct ifaddr **ifnet_addrs = NULL;
struct ifnet **ifindex2ifnet = NULL;
struct ifnet_head ifnet = TAILQ_HEAD_INITIALIZER(ifnet);
@@ -932,8 +932,7 @@ ifa_ifwithnet(struct sockaddr *addr, u_int rdomain)
rdomain = rtable_l2(rdomain);
if (af == AF_LINK) {
struct sockaddr_dl *sdl = (struct sockaddr_dl *)addr;
- if (sdl->sdl_index && sdl->sdl_index < if_indexlim &&
- ifindex2ifnet[sdl->sdl_index])
+ if (sdl->sdl_index && if_get(sdl->sdl_index))
return (ifnet_addrs[sdl->sdl_index]);
}
TAILQ_FOREACH(ifp, &ifnet, if_list) {
@@ -1164,8 +1163,7 @@ if_slowtimo(void *arg)
}
/*
- * Map interface name to
- * interface structure pointer.
+ * Map interface name to interface structure pointer.
*/
struct ifnet *
ifunit(const char *name)
@@ -1180,6 +1178,20 @@ ifunit(const char *name)
}
/*
+ * Map interface index to interface structure pointer.
+ */
+struct ifnet *
+if_get(unsigned int index)
+{
+ struct ifnet *ifp = NULL;
+
+ if (index < if_indexlim)
+ ifp = ifindex2ifnet[index];
+
+ return (ifp);
+}
+
+/*
* Interface ioctls.
*/
int
diff --git a/sys/net/if.h b/sys/net/if.h
index 5c3d4d1251a..f496059d9d9 100644
--- a/sys/net/if.h
+++ b/sys/net/if.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: if.h,v 1.139 2013/03/07 09:40:19 mpi Exp $ */
+/* $OpenBSD: if.h,v 1.140 2013/03/20 10:34:12 mpi Exp $ */
/* $NetBSD: if.h,v 1.23 1996/05/07 02:40:27 thorpej Exp $ */
/*
@@ -798,9 +798,7 @@ do { \
extern int ifqmaxlen;
extern struct ifnet_head ifnet;
-extern struct ifnet **ifindex2ifnet;
extern struct ifnet *lo0ifp;
-extern int if_indexlim;
#define ether_input_mbuf(ifp, m) ether_input((ifp), NULL, (m))
@@ -833,6 +831,7 @@ int if_addgroup(struct ifnet *, const char *);
int if_delgroup(struct ifnet *, const char *);
void if_group_routechange(struct sockaddr *, struct sockaddr *);
struct ifnet *ifunit(const char *);
+struct ifnet *if_get(unsigned int);
void if_start(struct ifnet *);
void ifnewlladdr(struct ifnet *);
diff --git a/sys/netinet6/in6_src.c b/sys/netinet6/in6_src.c
index e46678d79b0..3068833ac18 100644
--- a/sys/netinet6/in6_src.c
+++ b/sys/netinet6/in6_src.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: in6_src.c,v 1.28 2013/03/04 14:42:25 bluhm Exp $ */
+/* $OpenBSD: in6_src.c,v 1.29 2013/03/20 10:34:12 mpi Exp $ */
/* $KAME: in6_src.c,v 1.36 2001/02/06 04:08:17 itojun Exp $ */
/*
@@ -103,6 +103,7 @@ in6_selectsrc(struct sockaddr_in6 *dstsock, struct ip6_pktopts *opts,
struct ip6_moptions *mopts, struct route_in6 *ro, struct in6_addr *laddr,
int *errorp, u_int rtableid)
{
+ struct ifnet *ifp = NULL;
struct in6_addr *dst;
struct in6_ifaddr *ia6 = NULL;
struct in6_pktinfo *pi = NULL;
@@ -118,7 +119,6 @@ in6_selectsrc(struct sockaddr_in6 *dstsock, struct ip6_pktopts *opts,
*/
if (opts && (pi = opts->ip6po_pktinfo) &&
!IN6_IS_ADDR_UNSPECIFIED(&pi->ipi6_addr)) {
- struct ifnet *ifp = NULL;
struct sockaddr_in6 sa6;
/* get the outgoing interface */
@@ -160,9 +160,12 @@ in6_selectsrc(struct sockaddr_in6 *dstsock, struct ip6_pktopts *opts,
* the interface.
*/
if (pi && pi->ipi6_ifindex) {
- /* XXX boundary check is assumed to be already done. */
- ia6 = in6_ifawithscope(ifindex2ifnet[pi->ipi6_ifindex],
- dst, rtableid);
+ ifp = if_get(pi->ipi6_ifindex);
+ if (ifp == NULL) {
+ *errorp = ENXIO; /* XXX: better error? */
+ return (0);
+ }
+ ia6 = in6_ifawithscope(ifp, dst, rtableid);
if (ia6 == 0) {
*errorp = EADDRNOTAVAIL;
return (0);
@@ -181,18 +184,12 @@ in6_selectsrc(struct sockaddr_in6 *dstsock, struct ip6_pktopts *opts,
*/
if ((IN6_IS_ADDR_LINKLOCAL(dst) || IN6_IS_ADDR_MC_LINKLOCAL(dst) ||
IN6_IS_ADDR_MC_INTFACELOCAL(dst)) && dstsock->sin6_scope_id) {
- /*
- * I'm not sure if boundary check for scope_id is done
- * somewhere...
- */
- if (dstsock->sin6_scope_id < 0 ||
- if_indexlim <= dstsock->sin6_scope_id ||
- !ifindex2ifnet[dstsock->sin6_scope_id]) {
+ ifp = if_get(dstsock->sin6_scope_id);
+ if (ifp == NULL) {
*errorp = ENXIO; /* XXX: better error? */
return (0);
}
- ia6 = in6_ifawithscope(ifindex2ifnet[dstsock->sin6_scope_id],
- dst, rtableid);
+ ia6 = in6_ifawithscope(ifp, dst, rtableid);
if (ia6 == 0) {
*errorp = EADDRNOTAVAIL;
return (0);
@@ -208,10 +205,10 @@ in6_selectsrc(struct sockaddr_in6 *dstsock, struct ip6_pktopts *opts,
* choose a loopback interface as the outgoing interface.
*/
if (IN6_IS_ADDR_MULTICAST(dst)) {
- struct ifnet *ifp = mopts ? mopts->im6o_multicast_ifp : NULL;
+ ifp = mopts ? mopts->im6o_multicast_ifp : NULL;
if (!ifp && dstsock->sin6_scope_id)
- ifp = ifindex2ifnet[htons(dstsock->sin6_scope_id)];
+ ifp = if_get(htons(dstsock->sin6_scope_id));
if (ifp) {
ia6 = in6_ifawithscope(ifp, dst, rtableid);
@@ -349,8 +346,7 @@ selectroute(struct sockaddr_in6 *dstsock, struct ip6_pktopts *opts,
/* If the caller specify the outgoing interface explicitly, use it. */
if (opts && (pi = opts->ip6po_pktinfo) != NULL && pi->ipi6_ifindex) {
- /* XXX boundary check is assumed to be already done. */
- ifp = ifindex2ifnet[pi->ipi6_ifindex];
+ ifp = if_get(pi->ipi6_ifindex);
if (ifp != NULL &&
(norouteok || retrt == NULL ||
IN6_IS_ADDR_MULTICAST(dst))) {
@@ -640,7 +636,9 @@ in6_embedscope(in6, sin6, in6p, ifpp)
if (in6p && in6p->in6p_outputopts &&
(pi = in6p->in6p_outputopts->ip6po_pktinfo) &&
pi->ipi6_ifindex) {
- ifp = ifindex2ifnet[pi->ipi6_ifindex];
+ ifp = if_get(pi->ipi6_ifindex);
+ if (ifp == NULL)
+ return ENXIO; /* XXX EINVAL? */
in6->s6_addr16[1] = htons(pi->ipi6_ifindex);
} else if (in6p && IN6_IS_ADDR_MULTICAST(in6) &&
in6p->in6p_moptions &&
@@ -648,11 +646,9 @@ in6_embedscope(in6, sin6, in6p, ifpp)
ifp = in6p->in6p_moptions->im6o_multicast_ifp;
in6->s6_addr16[1] = htons(ifp->if_index);
} else if (scopeid) {
- /* boundary check */
- if (scopeid < 0 || if_indexlim <= scopeid ||
- !ifindex2ifnet[scopeid])
+ ifp = if_get(scopeid);
+ if (ifp == NULL)
return ENXIO; /* XXX EINVAL? */
- ifp = ifindex2ifnet[scopeid];
/*XXX assignment to 16bit from 32bit variable */
in6->s6_addr16[1] = htons(scopeid & 0xffff);
}
@@ -694,8 +690,7 @@ in6_recoverscope(struct sockaddr_in6 *sin6, const struct in6_addr *in6,
scopeid = ntohs(sin6->sin6_addr.s6_addr16[1]);
if (scopeid) {
/* sanity check */
- if (scopeid < 0 || if_indexlim <= scopeid ||
- !ifindex2ifnet[scopeid])
+ if (if_get(scopeid) == NULL)
return ENXIO;
if (ifp && ifp->if_index != scopeid)
return ENXIO;
diff --git a/sys/netinet6/ip6_mroute.c b/sys/netinet6/ip6_mroute.c
index 762bcff38d5..35f50677523 100644
--- a/sys/netinet6/ip6_mroute.c
+++ b/sys/netinet6/ip6_mroute.c
@@ -584,9 +584,7 @@ add_m6if(struct mif6ctl *mifcp)
mifp = mif6table + mifcp->mif6c_mifi;
if (mifp->m6_ifp)
return EADDRINUSE; /* XXX: is it appropriate? */
- if (mifcp->mif6c_pifi == 0 || mifcp->mif6c_pifi >= if_indexlim)
- return ENXIO;
- ifp = ifindex2ifnet[mifcp->mif6c_pifi];
+ ifp = if_get(mifcp->mif6c_pifi);
if (!ifp)
return ENXIO;
diff --git a/sys/netinet6/ip6_output.c b/sys/netinet6/ip6_output.c
index 5ab27a5b0ef..9ec2f19239d 100644
--- a/sys/netinet6/ip6_output.c
+++ b/sys/netinet6/ip6_output.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ip6_output.c,v 1.134 2013/03/14 11:18:37 mpi Exp $ */
+/* $OpenBSD: ip6_output.c,v 1.135 2013/03/20 10:34:12 mpi Exp $ */
/* $KAME: ip6_output.c,v 1.172 2001/03/25 09:55:56 itojun Exp $ */
/*
@@ -742,9 +742,9 @@ reroute:
*/
origifp = NULL;
if (IN6_IS_SCOPE_EMBED(&ip6->ip6_src))
- origifp = ifindex2ifnet[ntohs(ip6->ip6_src.s6_addr16[1])];
+ origifp = if_get(ntohs(ip6->ip6_src.s6_addr16[1]));
else if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst))
- origifp = ifindex2ifnet[ntohs(ip6->ip6_dst.s6_addr16[1])];
+ origifp = if_get(ntohs(ip6->ip6_dst.s6_addr16[1]));
/*
* XXX: origifp can be NULL even in those two cases above.
* For example, if we remove the (only) link-local address
@@ -2380,14 +2380,12 @@ ip6_setmoptions(int optname, struct ip6_moptions **im6op, struct mbuf *m)
if (ifindex == 0)
ifp = NULL;
else {
- if (ifindex < 0 || if_indexlim <= ifindex ||
- !ifindex2ifnet[ifindex]) {
+ ifp = if_get(ifindex);
+ if (ifp == NULL) {
error = ENXIO; /* XXX EINVAL? */
break;
}
- ifp = ifindex2ifnet[ifindex];
- if (ifp == NULL ||
- (ifp->if_flags & IFF_MULTICAST) == 0) {
+ if ((ifp->if_flags & IFF_MULTICAST) == 0) {
error = EADDRNOTAVAIL;
break;
}
@@ -2484,13 +2482,11 @@ ip6_setmoptions(int optname, struct ip6_moptions **im6op, struct mbuf *m)
/*
* If the interface is specified, validate it.
*/
- if (mreq->ipv6mr_interface < 0 ||
- if_indexlim <= mreq->ipv6mr_interface ||
- !ifindex2ifnet[mreq->ipv6mr_interface]) {
+ ifp = if_get(mreq->ipv6mr_interface);
+ if (ifp == NULL) {
error = ENXIO; /* XXX EINVAL? */
break;
}
- ifp = ifindex2ifnet[mreq->ipv6mr_interface];
}
/*
@@ -2558,13 +2554,11 @@ ip6_setmoptions(int optname, struct ip6_moptions **im6op, struct mbuf *m)
if (mreq->ipv6mr_interface == 0)
ifp = NULL;
else {
- if (mreq->ipv6mr_interface < 0 ||
- if_indexlim <= mreq->ipv6mr_interface ||
- !ifindex2ifnet[mreq->ipv6mr_interface]) {
+ ifp = if_get(mreq->ipv6mr_interface);
+ if (ifp == NULL) {
error = ENXIO; /* XXX EINVAL? */
break;
}
- ifp = ifindex2ifnet[mreq->ipv6mr_interface];
}
/*
@@ -2827,13 +2821,8 @@ ip6_setpktopt(int optname, u_char *buf, int len, struct ip6_pktopts *opt,
return (EINVAL);
}
- /* validate the interface index if specified. */
- if (pktinfo->ipi6_ifindex >= if_indexlim ||
- pktinfo->ipi6_ifindex < 0) {
- return (ENXIO);
- }
if (pktinfo->ipi6_ifindex) {
- ifp = ifindex2ifnet[pktinfo->ipi6_ifindex];
+ ifp = if_get(pktinfo->ipi6_ifindex);
if (ifp == NULL)
return (ENXIO);
}
@@ -2921,9 +2910,7 @@ ip6_setpktopt(int optname, u_char *buf, int len, struct ip6_pktopts *opt,
return (EINVAL);
}
if (IN6_IS_SCOPE_EMBED(&sa6->sin6_addr)) {
- if (sa6->sin6_scope_id < 0 ||
- if_indexlim <= sa6->sin6_scope_id ||
- !ifindex2ifnet[sa6->sin6_scope_id])
+ if (if_get(sa6->sin6_scope_id) == NULL)
return (EINVAL);
sa6->sin6_addr.s6_addr16[1] =
htonl(sa6->sin6_scope_id);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 12:29:55 +0000