8ca6c11a7c
If an if_gif exists and has an address assigned inside a vnet when the vnet is shut down we failed to clean up the address, leading to a panic when we ip_destroy() and the V_in_ifaddrhashtbl is not empty. This happens because of the VNET_SYS(UN)INIT order, which means we destroy the if_gif interface before the addresses can be purged (and if_detach() does not remove addresses, it assumes this will be done by the stack teardown code). Set subsystem SI_SUB_PSEUDO just like if_bridge so the cleanup operations happen in the correct order. MFC after: 3 weeks Sponsored by: Rubicon Communications, LLC ("Netgate") Differential Revision: https://reviews.freebsd.org/D32835
724 lines
17 KiB
C
724 lines
17 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
|
* Copyright (c) 2018 Andrey V. Elsukov <ae@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the project nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $KAME: if_gif.c,v 1.87 2001/10/19 08:50:27 itojun Exp $
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_inet.h"
|
|
#include "opt_inet6.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/module.h>
|
|
#include <sys/rmlock.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/sx.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/time.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/priv.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/conf.h>
|
|
#include <machine/cpu.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_var.h>
|
|
#include <net/if_clone.h>
|
|
#include <net/if_types.h>
|
|
#include <net/netisr.h>
|
|
#include <net/route.h>
|
|
#include <net/bpf.h>
|
|
#include <net/vnet.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_ecn.h>
|
|
#ifdef INET
|
|
#include <netinet/in_var.h>
|
|
#include <netinet/ip_var.h>
|
|
#endif /* INET */
|
|
|
|
#ifdef INET6
|
|
#ifndef INET
|
|
#include <netinet/in.h>
|
|
#endif
|
|
#include <netinet6/in6_var.h>
|
|
#include <netinet/ip6.h>
|
|
#include <netinet6/ip6_ecn.h>
|
|
#include <netinet6/ip6_var.h>
|
|
#endif /* INET6 */
|
|
|
|
#include <netinet/ip_encap.h>
|
|
#include <net/ethernet.h>
|
|
#include <net/if_bridgevar.h>
|
|
#include <net/if_gif.h>
|
|
|
|
#include <security/mac/mac_framework.h>
|
|
|
|
static const char gifname[] = "gif";
|
|
|
|
MALLOC_DEFINE(M_GIF, "gif", "Generic Tunnel Interface");
|
|
static struct sx gif_ioctl_sx;
|
|
SX_SYSINIT(gif_ioctl_sx, &gif_ioctl_sx, "gif_ioctl");
|
|
|
|
void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp, int af);
|
|
void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m, int af);
|
|
void (*ng_gif_attach_p)(struct ifnet *ifp);
|
|
void (*ng_gif_detach_p)(struct ifnet *ifp);
|
|
|
|
#ifdef VIMAGE
|
|
static void gif_reassign(struct ifnet *, struct vnet *, char *);
|
|
#endif
|
|
static void gif_delete_tunnel(struct gif_softc *);
|
|
static int gif_ioctl(struct ifnet *, u_long, caddr_t);
|
|
static int gif_transmit(struct ifnet *, struct mbuf *);
|
|
static void gif_qflush(struct ifnet *);
|
|
static int gif_clone_create(struct if_clone *, int, caddr_t);
|
|
static void gif_clone_destroy(struct ifnet *);
|
|
VNET_DEFINE_STATIC(struct if_clone *, gif_cloner);
|
|
#define V_gif_cloner VNET(gif_cloner)
|
|
|
|
SYSCTL_DECL(_net_link);
|
|
static SYSCTL_NODE(_net_link, IFT_GIF, gif, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
|
|
"Generic Tunnel Interface");
|
|
#ifndef MAX_GIF_NEST
|
|
/*
|
|
* This macro controls the default upper limitation on nesting of gif tunnels.
|
|
* Since, setting a large value to this macro with a careless configuration
|
|
* may introduce system crash, we don't allow any nestings by default.
|
|
* If you need to configure nested gif tunnels, you can define this macro
|
|
* in your kernel configuration file. However, if you do so, please be
|
|
* careful to configure the tunnels so that it won't make a loop.
|
|
*/
|
|
#define MAX_GIF_NEST 1
|
|
#endif
|
|
VNET_DEFINE_STATIC(int, max_gif_nesting) = MAX_GIF_NEST;
|
|
#define V_max_gif_nesting VNET(max_gif_nesting)
|
|
SYSCTL_INT(_net_link_gif, OID_AUTO, max_nesting, CTLFLAG_VNET | CTLFLAG_RW,
|
|
&VNET_NAME(max_gif_nesting), 0, "Max nested tunnels");
|
|
|
|
static int
|
|
gif_clone_create(struct if_clone *ifc, int unit, caddr_t params)
|
|
{
|
|
struct gif_softc *sc;
|
|
|
|
sc = malloc(sizeof(struct gif_softc), M_GIF, M_WAITOK | M_ZERO);
|
|
sc->gif_fibnum = curthread->td_proc->p_fibnum;
|
|
GIF2IFP(sc) = if_alloc(IFT_GIF);
|
|
GIF2IFP(sc)->if_softc = sc;
|
|
if_initname(GIF2IFP(sc), gifname, unit);
|
|
|
|
GIF2IFP(sc)->if_addrlen = 0;
|
|
GIF2IFP(sc)->if_mtu = GIF_MTU;
|
|
GIF2IFP(sc)->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
|
|
GIF2IFP(sc)->if_ioctl = gif_ioctl;
|
|
GIF2IFP(sc)->if_transmit = gif_transmit;
|
|
GIF2IFP(sc)->if_qflush = gif_qflush;
|
|
GIF2IFP(sc)->if_output = gif_output;
|
|
#ifdef VIMAGE
|
|
GIF2IFP(sc)->if_reassign = gif_reassign;
|
|
#endif
|
|
GIF2IFP(sc)->if_capabilities |= IFCAP_LINKSTATE;
|
|
GIF2IFP(sc)->if_capenable |= IFCAP_LINKSTATE;
|
|
if_attach(GIF2IFP(sc));
|
|
bpfattach(GIF2IFP(sc), DLT_NULL, sizeof(u_int32_t));
|
|
if (ng_gif_attach_p != NULL)
|
|
(*ng_gif_attach_p)(GIF2IFP(sc));
|
|
|
|
return (0);
|
|
}
|
|
|
|
#ifdef VIMAGE
|
|
static void
|
|
gif_reassign(struct ifnet *ifp, struct vnet *new_vnet __unused,
|
|
char *unused __unused)
|
|
{
|
|
struct gif_softc *sc;
|
|
|
|
sx_xlock(&gif_ioctl_sx);
|
|
sc = ifp->if_softc;
|
|
if (sc != NULL)
|
|
gif_delete_tunnel(sc);
|
|
sx_xunlock(&gif_ioctl_sx);
|
|
}
|
|
#endif /* VIMAGE */
|
|
|
|
static void
|
|
gif_clone_destroy(struct ifnet *ifp)
|
|
{
|
|
struct gif_softc *sc;
|
|
|
|
sx_xlock(&gif_ioctl_sx);
|
|
sc = ifp->if_softc;
|
|
gif_delete_tunnel(sc);
|
|
if (ng_gif_detach_p != NULL)
|
|
(*ng_gif_detach_p)(ifp);
|
|
bpfdetach(ifp);
|
|
if_detach(ifp);
|
|
ifp->if_softc = NULL;
|
|
sx_xunlock(&gif_ioctl_sx);
|
|
|
|
GIF_WAIT();
|
|
if_free(ifp);
|
|
free(sc, M_GIF);
|
|
}
|
|
|
|
static void
|
|
vnet_gif_init(const void *unused __unused)
|
|
{
|
|
|
|
V_gif_cloner = if_clone_simple(gifname, gif_clone_create,
|
|
gif_clone_destroy, 0);
|
|
#ifdef INET
|
|
in_gif_init();
|
|
#endif
|
|
#ifdef INET6
|
|
in6_gif_init();
|
|
#endif
|
|
}
|
|
VNET_SYSINIT(vnet_gif_init, SI_SUB_PSEUDO, SI_ORDER_ANY,
|
|
vnet_gif_init, NULL);
|
|
|
|
static void
|
|
vnet_gif_uninit(const void *unused __unused)
|
|
{
|
|
|
|
if_clone_detach(V_gif_cloner);
|
|
#ifdef INET
|
|
in_gif_uninit();
|
|
#endif
|
|
#ifdef INET6
|
|
in6_gif_uninit();
|
|
#endif
|
|
}
|
|
VNET_SYSUNINIT(vnet_gif_uninit, SI_SUB_PSEUDO, SI_ORDER_ANY,
|
|
vnet_gif_uninit, NULL);
|
|
|
|
static int
|
|
gifmodevent(module_t mod, int type, void *data)
|
|
{
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
case MOD_UNLOAD:
|
|
break;
|
|
default:
|
|
return (EOPNOTSUPP);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static moduledata_t gif_mod = {
|
|
"if_gif",
|
|
gifmodevent,
|
|
0
|
|
};
|
|
|
|
DECLARE_MODULE(if_gif, gif_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
|
|
MODULE_VERSION(if_gif, 1);
|
|
|
|
struct gif_list *
|
|
gif_hashinit(void)
|
|
{
|
|
struct gif_list *hash;
|
|
int i;
|
|
|
|
hash = malloc(sizeof(struct gif_list) * GIF_HASH_SIZE,
|
|
M_GIF, M_WAITOK);
|
|
for (i = 0; i < GIF_HASH_SIZE; i++)
|
|
CK_LIST_INIT(&hash[i]);
|
|
|
|
return (hash);
|
|
}
|
|
|
|
void
|
|
gif_hashdestroy(struct gif_list *hash)
|
|
{
|
|
|
|
free(hash, M_GIF);
|
|
}
|
|
|
|
#define MTAG_GIF 1080679712
|
|
static int
|
|
gif_transmit(struct ifnet *ifp, struct mbuf *m)
|
|
{
|
|
struct gif_softc *sc;
|
|
struct etherip_header *eth;
|
|
#ifdef INET
|
|
struct ip *ip;
|
|
#endif
|
|
#ifdef INET6
|
|
struct ip6_hdr *ip6;
|
|
uint32_t t;
|
|
#endif
|
|
uint32_t af;
|
|
uint8_t proto, ecn;
|
|
int error;
|
|
|
|
NET_EPOCH_ASSERT();
|
|
#ifdef MAC
|
|
error = mac_ifnet_check_transmit(ifp, m);
|
|
if (error) {
|
|
m_freem(m);
|
|
goto err;
|
|
}
|
|
#endif
|
|
error = ENETDOWN;
|
|
sc = ifp->if_softc;
|
|
if ((ifp->if_flags & IFF_MONITOR) != 0 ||
|
|
(ifp->if_flags & IFF_UP) == 0 ||
|
|
(ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
|
|
sc->gif_family == 0 ||
|
|
(error = if_tunnel_check_nesting(ifp, m, MTAG_GIF,
|
|
V_max_gif_nesting)) != 0) {
|
|
m_freem(m);
|
|
goto err;
|
|
}
|
|
/* Now pull back the af that we stashed in the csum_data. */
|
|
if (ifp->if_bridge)
|
|
af = AF_LINK;
|
|
else
|
|
af = m->m_pkthdr.csum_data;
|
|
m->m_flags &= ~(M_BCAST|M_MCAST);
|
|
M_SETFIB(m, sc->gif_fibnum);
|
|
BPF_MTAP2(ifp, &af, sizeof(af), m);
|
|
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
|
|
if_inc_counter(ifp, IFCOUNTER_OBYTES, m->m_pkthdr.len);
|
|
/* inner AF-specific encapsulation */
|
|
ecn = 0;
|
|
switch (af) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
proto = IPPROTO_IPV4;
|
|
if (m->m_len < sizeof(struct ip))
|
|
m = m_pullup(m, sizeof(struct ip));
|
|
if (m == NULL) {
|
|
error = ENOBUFS;
|
|
goto err;
|
|
}
|
|
ip = mtod(m, struct ip *);
|
|
ip_ecn_ingress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
|
|
ECN_NOCARE, &ecn, &ip->ip_tos);
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
proto = IPPROTO_IPV6;
|
|
if (m->m_len < sizeof(struct ip6_hdr))
|
|
m = m_pullup(m, sizeof(struct ip6_hdr));
|
|
if (m == NULL) {
|
|
error = ENOBUFS;
|
|
goto err;
|
|
}
|
|
t = 0;
|
|
ip6 = mtod(m, struct ip6_hdr *);
|
|
ip6_ecn_ingress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
|
|
ECN_NOCARE, &t, &ip6->ip6_flow);
|
|
ecn = (ntohl(t) >> 20) & 0xff;
|
|
break;
|
|
#endif
|
|
case AF_LINK:
|
|
proto = IPPROTO_ETHERIP;
|
|
M_PREPEND(m, sizeof(struct etherip_header), M_NOWAIT);
|
|
if (m == NULL) {
|
|
error = ENOBUFS;
|
|
goto err;
|
|
}
|
|
eth = mtod(m, struct etherip_header *);
|
|
eth->eip_resvh = 0;
|
|
eth->eip_ver = ETHERIP_VERSION;
|
|
eth->eip_resvl = 0;
|
|
break;
|
|
default:
|
|
error = EAFNOSUPPORT;
|
|
m_freem(m);
|
|
goto err;
|
|
}
|
|
/* XXX should we check if our outer source is legal? */
|
|
/* dispatch to output logic based on outer AF */
|
|
switch (sc->gif_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
error = in_gif_output(ifp, m, proto, ecn);
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
error = in6_gif_output(ifp, m, proto, ecn);
|
|
break;
|
|
#endif
|
|
default:
|
|
m_freem(m);
|
|
}
|
|
err:
|
|
if (error)
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
gif_qflush(struct ifnet *ifp __unused)
|
|
{
|
|
|
|
}
|
|
|
|
int
|
|
gif_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
|
|
struct route *ro)
|
|
{
|
|
uint32_t af;
|
|
|
|
if (dst->sa_family == AF_UNSPEC)
|
|
bcopy(dst->sa_data, &af, sizeof(af));
|
|
else
|
|
af = RO_GET_FAMILY(ro, dst);
|
|
/*
|
|
* Now save the af in the inbound pkt csum data, this is a cheat since
|
|
* we are using the inbound csum_data field to carry the af over to
|
|
* the gif_transmit() routine, avoiding using yet another mtag.
|
|
*/
|
|
m->m_pkthdr.csum_data = af;
|
|
return (ifp->if_transmit(ifp, m));
|
|
}
|
|
|
|
void
|
|
gif_input(struct mbuf *m, struct ifnet *ifp, int proto, uint8_t ecn)
|
|
{
|
|
struct etherip_header *eip;
|
|
#ifdef INET
|
|
struct ip *ip;
|
|
#endif
|
|
#ifdef INET6
|
|
struct ip6_hdr *ip6;
|
|
uint32_t t;
|
|
#endif
|
|
struct ether_header *eh;
|
|
struct ifnet *oldifp;
|
|
int isr, n, af;
|
|
|
|
NET_EPOCH_ASSERT();
|
|
|
|
if (ifp == NULL) {
|
|
/* just in case */
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
m->m_pkthdr.rcvif = ifp;
|
|
m_clrprotoflags(m);
|
|
switch (proto) {
|
|
#ifdef INET
|
|
case IPPROTO_IPV4:
|
|
af = AF_INET;
|
|
if (m->m_len < sizeof(struct ip))
|
|
m = m_pullup(m, sizeof(struct ip));
|
|
if (m == NULL)
|
|
goto drop;
|
|
ip = mtod(m, struct ip *);
|
|
if (ip_ecn_egress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
|
|
ECN_NOCARE, &ecn, &ip->ip_tos) == 0) {
|
|
m_freem(m);
|
|
goto drop;
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case IPPROTO_IPV6:
|
|
af = AF_INET6;
|
|
if (m->m_len < sizeof(struct ip6_hdr))
|
|
m = m_pullup(m, sizeof(struct ip6_hdr));
|
|
if (m == NULL)
|
|
goto drop;
|
|
t = htonl((uint32_t)ecn << 20);
|
|
ip6 = mtod(m, struct ip6_hdr *);
|
|
if (ip6_ecn_egress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
|
|
ECN_NOCARE, &t, &ip6->ip6_flow) == 0) {
|
|
m_freem(m);
|
|
goto drop;
|
|
}
|
|
break;
|
|
#endif
|
|
case IPPROTO_ETHERIP:
|
|
af = AF_LINK;
|
|
break;
|
|
default:
|
|
m_freem(m);
|
|
goto drop;
|
|
}
|
|
|
|
#ifdef MAC
|
|
mac_ifnet_create_mbuf(ifp, m);
|
|
#endif
|
|
|
|
if (bpf_peers_present(ifp->if_bpf)) {
|
|
uint32_t af1 = af;
|
|
bpf_mtap2(ifp->if_bpf, &af1, sizeof(af1), m);
|
|
}
|
|
|
|
if ((ifp->if_flags & IFF_MONITOR) != 0) {
|
|
if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
|
|
if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len);
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
if (ng_gif_input_p != NULL) {
|
|
(*ng_gif_input_p)(ifp, &m, af);
|
|
if (m == NULL)
|
|
goto drop;
|
|
}
|
|
|
|
/*
|
|
* Put the packet to the network layer input queue according to the
|
|
* specified address family.
|
|
* Note: older versions of gif_input directly called network layer
|
|
* input functions, e.g. ip6_input, here. We changed the policy to
|
|
* prevent too many recursive calls of such input functions, which
|
|
* might cause kernel panic. But the change may introduce another
|
|
* problem; if the input queue is full, packets are discarded.
|
|
* The kernel stack overflow really happened, and we believed
|
|
* queue-full rarely occurs, so we changed the policy.
|
|
*/
|
|
switch (af) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
isr = NETISR_IP;
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
isr = NETISR_IPV6;
|
|
break;
|
|
#endif
|
|
case AF_LINK:
|
|
n = sizeof(struct etherip_header) +
|
|
sizeof(struct ether_header);
|
|
if (n > m->m_len)
|
|
m = m_pullup(m, n);
|
|
if (m == NULL)
|
|
goto drop;
|
|
eip = mtod(m, struct etherip_header *);
|
|
if (eip->eip_ver != ETHERIP_VERSION) {
|
|
/* discard unknown versions */
|
|
m_freem(m);
|
|
goto drop;
|
|
}
|
|
|
|
m_adj_decap(m, sizeof(struct etherip_header));
|
|
|
|
m->m_flags &= ~(M_BCAST|M_MCAST);
|
|
m->m_pkthdr.rcvif = ifp;
|
|
|
|
if (ifp->if_bridge) {
|
|
oldifp = ifp;
|
|
eh = mtod(m, struct ether_header *);
|
|
if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
|
|
if (ETHER_IS_BROADCAST(eh->ether_dhost))
|
|
m->m_flags |= M_BCAST;
|
|
else
|
|
m->m_flags |= M_MCAST;
|
|
if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1);
|
|
}
|
|
BRIDGE_INPUT(ifp, m);
|
|
|
|
if (m != NULL && ifp != oldifp) {
|
|
/*
|
|
* The bridge gave us back itself or one of the
|
|
* members for which the frame is addressed.
|
|
*/
|
|
ether_demux(ifp, m);
|
|
return;
|
|
}
|
|
}
|
|
if (m != NULL)
|
|
m_freem(m);
|
|
return;
|
|
|
|
default:
|
|
if (ng_gif_input_orphan_p != NULL)
|
|
(*ng_gif_input_orphan_p)(ifp, m, af);
|
|
else
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
|
|
if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len);
|
|
M_SETFIB(m, ifp->if_fib);
|
|
netisr_dispatch(isr, m);
|
|
return;
|
|
drop:
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
}
|
|
|
|
static int
|
|
gif_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
|
|
{
|
|
struct ifreq *ifr = (struct ifreq*)data;
|
|
struct gif_softc *sc;
|
|
u_int options;
|
|
int error;
|
|
|
|
switch (cmd) {
|
|
case SIOCSIFADDR:
|
|
ifp->if_flags |= IFF_UP;
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
case SIOCGIFMTU:
|
|
case SIOCSIFFLAGS:
|
|
return (0);
|
|
case SIOCSIFMTU:
|
|
if (ifr->ifr_mtu < GIF_MTU_MIN ||
|
|
ifr->ifr_mtu > GIF_MTU_MAX)
|
|
return (EINVAL);
|
|
else
|
|
ifp->if_mtu = ifr->ifr_mtu;
|
|
return (0);
|
|
}
|
|
sx_xlock(&gif_ioctl_sx);
|
|
sc = ifp->if_softc;
|
|
if (sc == NULL) {
|
|
error = ENXIO;
|
|
goto bad;
|
|
}
|
|
error = 0;
|
|
switch (cmd) {
|
|
case SIOCDIFPHYADDR:
|
|
if (sc->gif_family == 0)
|
|
break;
|
|
gif_delete_tunnel(sc);
|
|
break;
|
|
#ifdef INET
|
|
case SIOCSIFPHYADDR:
|
|
case SIOCGIFPSRCADDR:
|
|
case SIOCGIFPDSTADDR:
|
|
error = in_gif_ioctl(sc, cmd, data);
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case SIOCSIFPHYADDR_IN6:
|
|
case SIOCGIFPSRCADDR_IN6:
|
|
case SIOCGIFPDSTADDR_IN6:
|
|
error = in6_gif_ioctl(sc, cmd, data);
|
|
break;
|
|
#endif
|
|
case SIOCGTUNFIB:
|
|
ifr->ifr_fib = sc->gif_fibnum;
|
|
break;
|
|
case SIOCSTUNFIB:
|
|
if ((error = priv_check(curthread, PRIV_NET_GIF)) != 0)
|
|
break;
|
|
if (ifr->ifr_fib >= rt_numfibs)
|
|
error = EINVAL;
|
|
else
|
|
sc->gif_fibnum = ifr->ifr_fib;
|
|
break;
|
|
case GIFGOPTS:
|
|
options = sc->gif_options;
|
|
error = copyout(&options, ifr_data_get_ptr(ifr),
|
|
sizeof(options));
|
|
break;
|
|
case GIFSOPTS:
|
|
if ((error = priv_check(curthread, PRIV_NET_GIF)) != 0)
|
|
break;
|
|
error = copyin(ifr_data_get_ptr(ifr), &options,
|
|
sizeof(options));
|
|
if (error)
|
|
break;
|
|
if (options & ~GIF_OPTMASK) {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
if (sc->gif_options != options) {
|
|
switch (sc->gif_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
error = in_gif_setopts(sc, options);
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
error = in6_gif_setopts(sc, options);
|
|
break;
|
|
#endif
|
|
default:
|
|
/* No need to invoke AF-handler */
|
|
sc->gif_options = options;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
if (error == 0 && sc->gif_family != 0) {
|
|
if (
|
|
#ifdef INET
|
|
cmd == SIOCSIFPHYADDR ||
|
|
#endif
|
|
#ifdef INET6
|
|
cmd == SIOCSIFPHYADDR_IN6 ||
|
|
#endif
|
|
0) {
|
|
if_link_state_change(ifp, LINK_STATE_UP);
|
|
}
|
|
}
|
|
bad:
|
|
sx_xunlock(&gif_ioctl_sx);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
gif_delete_tunnel(struct gif_softc *sc)
|
|
{
|
|
|
|
sx_assert(&gif_ioctl_sx, SA_XLOCKED);
|
|
if (sc->gif_family != 0) {
|
|
CK_LIST_REMOVE(sc, srchash);
|
|
CK_LIST_REMOVE(sc, chain);
|
|
/* Wait until it become safe to free gif_hdr */
|
|
GIF_WAIT();
|
|
free(sc->gif_hdr, M_GIF);
|
|
}
|
|
sc->gif_family = 0;
|
|
GIF2IFP(sc)->if_drv_flags &= ~IFF_DRV_RUNNING;
|
|
if_link_state_change(GIF2IFP(sc), LINK_STATE_DOWN);
|
|
}
|