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Virtualize the pfil hooks so that different jails may chose different

Browse Source 
packet filters. ALso allows ipfw to be enabled on on ejail and disabled
on another. In 8.0 it's a global setting.

Sitting aroung in tree waiting to commit for: 2 months
MFC after:	2 months
This commit is contained in:
Julian Elischer 2009-10-11 05:59:43 +00:00
parent 33cba7feac
commit 0b4b0b0fee
15 changed files with 199 additions and 130 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
sys/net/if_bridge.c
View File

@ -109,6 +109,7 @@ __FBSDID("$FreeBSD$");
#include <net/if_types.h>
#include <net/if_var.h>
#include <net/pfil.h>
#include <net/vnet.h>
#include <netinet/in.h> /* for struct arpcom */
#include <netinet/in_systm.h>
@ -1800,9 +1801,9 @@ bridge_dummynet(struct mbuf *m, struct ifnet *ifp)
return;
}
if (PFIL_HOOKED(&inet_pfil_hook)
if (PFIL_HOOKED(&V_inet_pfil_hook)
#ifdef INET6
|| PFIL_HOOKED(&inet6_pfil_hook)
|| PFIL_HOOKED(&V_inet6_pfil_hook)
#endif
) {
if (bridge_pfil(&m, sc->sc_ifp, ifp, PFIL_OUT) != 0)
@ -2062,9 +2063,9 @@ bridge_forward(struct bridge_softc *sc, struct bridge_iflist *sbif,
ETHER_BPF_MTAP(ifp, m);
/* run the packet filter */
if (PFIL_HOOKED(&inet_pfil_hook)
if (PFIL_HOOKED(&V_inet_pfil_hook)
#ifdef INET6
|| PFIL_HOOKED(&inet6_pfil_hook)
|| PFIL_HOOKED(&V_inet6_pfil_hook)
#endif
) {
BRIDGE_UNLOCK(sc);
@ -2102,9 +2103,9 @@ bridge_forward(struct bridge_softc *sc, struct bridge_iflist *sbif,
BRIDGE_UNLOCK(sc);
if (PFIL_HOOKED(&inet_pfil_hook)
if (PFIL_HOOKED(&V_inet_pfil_hook)
#ifdef INET6
|| PFIL_HOOKED(&inet6_pfil_hook)
|| PFIL_HOOKED(&V_inet6_pfil_hook)
#endif
) {
if (bridge_pfil(&m, ifp, dst_if, PFIL_OUT) != 0)
@ -2243,7 +2244,7 @@ bridge_input(struct ifnet *ifp, struct mbuf *m)
#ifdef INET6
# define OR_PFIL_HOOKED_INET6 \
|| PFIL_HOOKED(&inet6_pfil_hook)
|| PFIL_HOOKED(&V_inet6_pfil_hook)
#else
# define OR_PFIL_HOOKED_INET6
#endif
@ -2260,7 +2261,7 @@ bridge_input(struct ifnet *ifp, struct mbuf *m)
iface->if_ipackets++; \
/* Filter on the physical interface. */ \
if (pfil_local_phys && \
(PFIL_HOOKED(&inet_pfil_hook) \
(PFIL_HOOKED(&V_inet_pfil_hook) \
OR_PFIL_HOOKED_INET6)) { \
if (bridge_pfil(&m, NULL, ifp, \
PFIL_IN) != 0 || m == NULL) { \
@ -2349,9 +2350,9 @@ bridge_broadcast(struct bridge_softc *sc, struct ifnet *src_if,
}
/* Filter on the bridge interface before broadcasting */
if (runfilt && (PFIL_HOOKED(&inet_pfil_hook)
if (runfilt && (PFIL_HOOKED(&V_inet_pfil_hook)
#ifdef INET6
|| PFIL_HOOKED(&inet6_pfil_hook)
|| PFIL_HOOKED(&V_inet6_pfil_hook)
#endif
)) {
if (bridge_pfil(&m, sc->sc_ifp, NULL, PFIL_OUT) != 0)
@ -2396,9 +2397,9 @@ bridge_broadcast(struct bridge_softc *sc, struct ifnet *src_if,
* pointer so we do not redundantly filter on the bridge for
* each interface we broadcast on.
*/
if (runfilt && (PFIL_HOOKED(&inet_pfil_hook)
if (runfilt && (PFIL_HOOKED(&V_inet_pfil_hook)
#ifdef INET6
|| PFIL_HOOKED(&inet6_pfil_hook)
|| PFIL_HOOKED(&V_inet6_pfil_hook)
#endif
)) {
if (used == 0) {
@ -3037,7 +3038,7 @@ bridge_pfil(struct mbuf **mp, struct ifnet *bifp, struct ifnet *ifp, int dir)
goto bad;
}
if (ip_fw_chk_ptr && pfil_ipfw != 0 && dir == PFIL_OUT && ifp != NULL) {
if (V_ip_fw_chk_ptr && pfil_ipfw != 0 && dir == PFIL_OUT && ifp != NULL) {
struct dn_pkt_tag *dn_tag;
error = -1;
@ -3057,7 +3058,7 @@ bridge_pfil(struct mbuf **mp, struct ifnet *bifp, struct ifnet *ifp, int dir)
args.next_hop = NULL;
args.eh = &eh2;
args.inp = NULL; /* used by ipfw uid/gid/jail rules */
i = ip_fw_chk_ptr(&args);
i = V_ip_fw_chk_ptr(&args);
*mp = args.m;
if (*mp == NULL)
@ -3109,21 +3110,21 @@ bridge_pfil(struct mbuf **mp, struct ifnet *bifp, struct ifnet *ifp, int dir)
* in_if -> bridge_if -> out_if
*/
if (pfil_bridge && dir == PFIL_OUT && bifp != NULL)
error = pfil_run_hooks(&inet_pfil_hook, mp, bifp,
error = pfil_run_hooks(&V_inet_pfil_hook, mp, bifp,
dir, NULL);
if (*mp == NULL || error != 0) /* filter may consume */
break;
if (pfil_member && ifp != NULL)
error = pfil_run_hooks(&inet_pfil_hook, mp, ifp,
error = pfil_run_hooks(&V_inet_pfil_hook, mp, ifp,
dir, NULL);
if (*mp == NULL || error != 0) /* filter may consume */
break;
if (pfil_bridge && dir == PFIL_IN && bifp != NULL)
error = pfil_run_hooks(&inet_pfil_hook, mp, bifp,
error = pfil_run_hooks(&V_inet_pfil_hook, mp, bifp,
dir, NULL);
if (*mp == NULL || error != 0) /* filter may consume */
@ -3163,21 +3164,21 @@ bridge_pfil(struct mbuf **mp, struct ifnet *bifp, struct ifnet *ifp, int dir)
#ifdef INET6
case ETHERTYPE_IPV6:
if (pfil_bridge && dir == PFIL_OUT && bifp != NULL)
error = pfil_run_hooks(&inet6_pfil_hook, mp, bifp,
error = pfil_run_hooks(&V_inet6_pfil_hook, mp, bifp,
dir, NULL);
if (*mp == NULL || error != 0) /* filter may consume */
break;
if (pfil_member && ifp != NULL)
error = pfil_run_hooks(&inet6_pfil_hook, mp, ifp,
error = pfil_run_hooks(&V_inet6_pfil_hook, mp, ifp,
dir, NULL);
if (*mp == NULL || error != 0) /* filter may consume */
break;
if (pfil_bridge && dir == PFIL_IN && bifp != NULL)
error = pfil_run_hooks(&inet6_pfil_hook, mp, bifp,
error = pfil_run_hooks(&V_inet6_pfil_hook, mp, bifp,
dir, NULL);
break;
#endif

6
sys/net/if_ethersubr.c
View File

@ -434,7 +434,7 @@ ether_output_frame(struct ifnet *ifp, struct mbuf *m)
{
#if defined(INET) || defined(INET6)
if (ip_fw_chk_ptr && V_ether_ipfw != 0) {
if (V_ip_fw_chk_ptr && V_ether_ipfw != 0) {
if (ether_ipfw_chk(&m, ifp, 0) == 0) {
if (m) {
m_freem(m);
@ -502,7 +502,7 @@ ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst, int shared)
args.next_hop = NULL; /* we do not support forward yet */
args.eh = &save_eh; /* MAC header for bridged/MAC packets */
args.inp = NULL; /* used by ipfw uid/gid/jail rules */
i = ip_fw_chk_ptr(&args);
i = V_ip_fw_chk_ptr(&args);
m = args.m;
if (m != NULL) {
/*
@ -775,7 +775,7 @@ ether_demux(struct ifnet *ifp, struct mbuf *m)
* Allow dummynet and/or ipfw to claim the frame.
* Do not do this for PROMISC frames in case we are re-entered.
*/
if (ip_fw_chk_ptr && V_ether_ipfw != 0 && !(m->m_flags & M_PROMISC)) {
if (V_ip_fw_chk_ptr && V_ether_ipfw != 0 && !(m->m_flags & M_PROMISC)) {
if (ether_ipfw_chk(&m, NULL, 0) == 0) {
if (m)
m_freem(m); /* dropped; free mbuf chain */

53
sys/net/pfil.c
View File

@ -56,8 +56,9 @@ static int pfil_list_add(pfil_list_t *, struct packet_filter_hook *, int);
static int pfil_list_remove(pfil_list_t *,
int (*)(void *, struct mbuf **, struct ifnet *, int, struct inpcb *), void *);
LIST_HEAD(, pfil_head) pfil_head_list =
LIST_HEAD_INITIALIZER(&pfil_head_list);
LIST_HEAD(pfilheadhead, pfil_head);
VNET_DEFINE(struct pfilheadhead, pfil_head_list);
#define V_pfil_head_list VNET(pfil_head_list)
/*
* pfil_run_hooks() runs the specified packet filter hooks.
@ -97,7 +98,7 @@ pfil_head_register(struct pfil_head *ph)
struct pfil_head *lph;
PFIL_LIST_LOCK();
LIST_FOREACH(lph, &pfil_head_list, ph_list) {
LIST_FOREACH(lph, &V_pfil_head_list, ph_list) {
if (ph->ph_type == lph->ph_type &&
ph->ph_un.phu_val == lph->ph_un.phu_val) {
PFIL_LIST_UNLOCK();
@ -108,7 +109,7 @@ pfil_head_register(struct pfil_head *ph)
ph->ph_nhooks = 0;
TAILQ_INIT(&ph->ph_in);
TAILQ_INIT(&ph->ph_out);
LIST_INSERT_HEAD(&pfil_head_list, ph, ph_list);
LIST_INSERT_HEAD(&V_pfil_head_list, ph, ph_list);
PFIL_LIST_UNLOCK();
return (0);
}
@ -143,7 +144,7 @@ pfil_head_get(int type, u_long val)
struct pfil_head *ph;
PFIL_LIST_LOCK();
LIST_FOREACH(ph, &pfil_head_list, ph_list)
LIST_FOREACH(ph, &V_pfil_head_list, ph_list)
if (ph->ph_type == type && ph->ph_un.phu_val == val)
break;
PFIL_LIST_UNLOCK();
@ -284,3 +285,45 @@ pfil_list_remove(pfil_list_t *list,
}
return ENOENT;
}
/****************
* Stuff that must be initialized for every instance
* (including the first of course).
*/
static int
vnet_pfil_init(const void *unused)
{
LIST_INIT(&V_pfil_head_list);
return (0);
}
/***********************
* Called for the removal of each instance.
*/
static int
vnet_pfil_uninit(const void *unused)
{
/* XXX should panic if list is not empty */
return 0;
}
/* Define startup order. */
#define PFIL_SYSINIT_ORDER SI_SUB_PROTO_BEGIN
#define PFIL_MODEVENT_ORDER (SI_ORDER_FIRST) /* On boot slot in here. */
#define PFIL_VNET_ORDER (PFIL_MODEVENT_ORDER + 2) /* Later still. */
/*
* Starting up.
* VNET_SYSINIT is called for each existing vnet and each new vnet.
*/
VNET_SYSINIT(vnet_pfil_init, PFIL_SYSINIT_ORDER, PFIL_VNET_ORDER,
vnet_pfil_init, NULL);
/*
* Closing up shop. These are done in REVERSE ORDER,
* Not called on reboot.
* VNET_SYSUNINIT is called for each exiting vnet as it exits.
*/
VNET_SYSUNINIT(vnet_pfil_uninit, PFIL_SYSINIT_ORDER, PFIL_VNET_ORDER,
vnet_pfil_uninit, NULL);

2
sys/netgraph/ng_bridge.c
View File

@ -634,7 +634,7 @@ ng_bridge_rcvdata(hook_p hook, item_p item)
/* Run packet through ipfw processing, if enabled */
#if 0
if (priv->conf.ipfw[linkNum] && V_fw_enable && ip_fw_chk_ptr != NULL) {
if (priv->conf.ipfw[linkNum] && V_fw_enable && V_ip_fw_chk_ptr != NULL) {
/* XXX not implemented yet */
}
#endif

9
sys/netinet/ip_fastfwd.c
View File

@ -351,10 +351,11 @@ ip_fastforward(struct mbuf *m)
/*
* Run through list of ipfilter hooks for input packets
*/
if (!PFIL_HOOKED(&inet_pfil_hook))
if (!PFIL_HOOKED(&V_inet_pfil_hook))
goto passin;
if (pfil_run_hooks(&inet_pfil_hook, &m, m->m_pkthdr.rcvif, PFIL_IN, NULL) ||
if (pfil_run_hooks(
&V_inet_pfil_hook, &m, m->m_pkthdr.rcvif, PFIL_IN, NULL) ||
m == NULL)
goto drop;
@ -438,10 +439,10 @@ ip_fastforward(struct mbuf *m)
/*
* Run through list of hooks for output packets.
*/
if (!PFIL_HOOKED(&inet_pfil_hook))
if (!PFIL_HOOKED(&V_inet_pfil_hook))
goto passout;
if (pfil_run_hooks(&inet_pfil_hook, &m, ifp, PFIL_OUT, NULL) || m == NULL) {
if (pfil_run_hooks(&V_inet_pfil_hook, &m, ifp, PFIL_OUT, NULL) || m == NULL) {
goto drop;
}

20
sys/netinet/ip_input.c
View File

@ -170,7 +170,7 @@ SYSCTL_VNET_INT(_net_inet_ip, OID_AUTO, check_interface, CTLFLAG_RW,
&VNET_NAME(ip_checkinterface), 0,
"Verify packet arrives on correct interface");
struct pfil_head inet_pfil_hook; /* Packet filter hooks */
VNET_DEFINE(struct pfil_head, inet_pfil_hook); /* Packet filter hooks */
static struct netisr_handler ip_nh = {
.nh_name = "ip",
@ -318,6 +318,13 @@ ip_init(void)
NULL, UMA_ALIGN_PTR, 0);
maxnipq_update();
/* Initialize packet filter hooks. */
V_inet_pfil_hook.ph_type = PFIL_TYPE_AF;
V_inet_pfil_hook.ph_af = AF_INET;
if ((i = pfil_head_register(&V_inet_pfil_hook)) != 0)
printf("%s: WARNING: unable to register pfil hook, "
"error %d\n", __func__, i);
#ifdef FLOWTABLE
TUNABLE_INT_FETCH("net.inet.ip.output_flowtable_size",
&V_ip_output_flowtable_size);
@ -348,13 +355,6 @@ ip_init(void)
ip_protox[pr->pr_protocol] = pr - inetsw;
}
/* Initialize packet filter hooks. */
inet_pfil_hook.ph_type = PFIL_TYPE_AF;
inet_pfil_hook.ph_af = AF_INET;
if ((i = pfil_head_register(&inet_pfil_hook)) != 0)
printf("%s: WARNING: unable to register pfil hook, "
"error %d\n", __func__, i);
/* Start ipport_tick. */
callout_init(&ipport_tick_callout, CALLOUT_MPSAFE);
callout_reset(&ipport_tick_callout, 1, ipport_tick, NULL);
@ -510,11 +510,11 @@ ip_input(struct mbuf *m)
*/
/* Jump over all PFIL processing if hooks are not active. */
if (!PFIL_HOOKED(&inet_pfil_hook))
if (!PFIL_HOOKED(&V_inet_pfil_hook))
goto passin;
odst = ip->ip_dst;
if (pfil_run_hooks(&inet_pfil_hook, &m, ifp, PFIL_IN, NULL) != 0)
if (pfil_run_hooks(&V_inet_pfil_hook, &m, ifp, PFIL_IN, NULL) != 0)
return;
if (m == NULL) /* consumed by filter */
return;

4
sys/netinet/ip_output.c
View File

@ -489,12 +489,12 @@ ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags,
#endif /* IPSEC */
/* Jump over all PFIL processing if hooks are not active. */
if (!PFIL_HOOKED(&inet_pfil_hook))
if (!PFIL_HOOKED(&V_inet_pfil_hook))
goto passout;
/* Run through list of hooks for output packets. */
odst.s_addr = ip->ip_dst.s_addr;
error = pfil_run_hooks(&inet_pfil_hook, &m, ifp, PFIL_OUT, inp);
error = pfil_run_hooks(&V_inet_pfil_hook, &m, ifp, PFIL_OUT, inp);
if (error != 0 || m == NULL)
goto done;

12
sys/netinet/ip_var.h
View File

@ -244,14 +244,20 @@ extern int (*ip_rsvp_vif)(struct socket *, struct sockopt *);
extern void (*ip_rsvp_force_done)(struct socket *);
extern void (*rsvp_input_p)(struct mbuf *m, int off);
extern struct pfil_head inet_pfil_hook; /* packet filter hooks */
VNET_DECLARE(struct pfil_head, inet_pfil_hook); /* packet filter hooks */
#define V_inet_pfil_hook VNET(inet_pfil_hook)
void in_delayed_cksum(struct mbuf *m);
/* ipfw and dummynet hooks. Most are declared in raw_ip.c */
struct ip_fw_args;
extern int (*ip_fw_chk_ptr)(struct ip_fw_args *args);
extern int (*ip_fw_ctl_ptr)(struct sockopt *);
typedef int (*ip_fw_chk_ptr_t)(struct ip_fw_args *args);
typedef int (*ip_fw_ctl_ptr_t)(struct sockopt *);
VNET_DECLARE(ip_fw_chk_ptr_t, ip_fw_chk_ptr);
VNET_DECLARE(ip_fw_ctl_ptr_t, ip_fw_ctl_ptr);
#define V_ip_fw_chk_ptr VNET(ip_fw_chk_ptr)
#define V_ip_fw_ctl_ptr VNET(ip_fw_ctl_ptr)
extern int (*ip_dn_ctl_ptr)(struct sockopt *);
extern int (*ip_dn_io_ptr)(struct mbuf **m, int dir, struct ip_fw_args *fwa);
extern void (*ip_dn_ruledel_ptr)(void *); /* in ip_fw2.c */

102
sys/netinet/ipfw/ip_fw2.c
View File

@ -2495,6 +2495,10 @@ do { \
}
IPFW_RLOCK(chain);
if (! V_ipfw_vnet_ready) { /* shutting down, leave NOW. */
IPFW_RUNLOCK(chain);
return (IP_FW_PASS); /* accept */
}
mtag = m_tag_find(m, PACKET_TAG_DIVERT, NULL);
if (args->rule) {
/*
@ -4637,29 +4641,21 @@ ipfw_init(void)
printf("limited to %d packets/entry by default\n",
V_verbose_limit);
/*
* Hook us up to pfil.
* Eventually pfil will be per vnet.
*/
if ((error = ipfw_hook()) != 0) {
printf("ipfw_hook() error\n");
return (error);
}
#ifdef INET6
if ((error = ipfw6_hook()) != 0) {
printf("ipfw6_hook() error\n");
return (error);
}
#endif
/*
* Other things that are only done the first time.
* (now that we are guaranteed of success).
*/
ip_fw_ctl_ptr = ipfw_ctl;
ip_fw_chk_ptr = ipfw_chk;
return (error);
}
/**********************
* Called for the removal of the last instance only on module unload.
*/
static void
ipfw_destroy(void)
{
uma_zdestroy(ipfw_dyn_rule_zone);
IPFW_DYN_LOCK_DESTROY();
printf("IP firewall unloaded\n");
}
/****************
* Stuff that must be initialized for every instance
* (including the first of course).
@ -4743,21 +4739,32 @@ vnet_ipfw_init(const void *unused)
/* First set up some values that are compile time options */
V_ipfw_vnet_ready = 1; /* Open for business */
/* Hook up the raw inputs */
V_ip_fw_ctl_ptr = ipfw_ctl;
V_ip_fw_chk_ptr = ipfw_chk;
/*
* Hook us up to pfil.
*/
if (V_fw_enable) {
if ((error = ipfw_hook()) != 0) {
printf("ipfw_hook() error\n");
return (error);
}
}
#ifdef INET6
if (V_fw6_enable) {
if ((error = ipfw6_hook()) != 0) {
printf("ipfw6_hook() error\n");
/* XXX should we unhook everything else? */
return (error);
}
}
#endif
return (0);
}
/**********************
* Called for the removal of the last instance only on module unload.
*/
static void
ipfw_destroy(void)
{
uma_zdestroy(ipfw_dyn_rule_zone);
IPFW_DYN_LOCK_DESTROY();
printf("IP firewall unloaded\n");
}
/***********************
* Called for the removal of each instance.
*/
@ -4767,9 +4774,18 @@ vnet_ipfw_uninit(const void *unused)
struct ip_fw *reap;
V_ipfw_vnet_ready = 0; /* tell new callers to go away */
callout_drain(&V_ipfw_timeout);
/* We wait on the wlock here until the last user leaves */
ipfw_unhook();
#ifdef INET6
ipfw6_unhook();
#endif
/* layer2 and other entrypoints still come in this way. */
V_ip_fw_chk_ptr = NULL;
V_ip_fw_ctl_ptr = NULL;
IPFW_WLOCK(&V_layer3_chain);
/* We wait on the wlock here until the last user leaves */
IPFW_WUNLOCK(&V_layer3_chain);
IPFW_WLOCK(&V_layer3_chain);
callout_drain(&V_ipfw_timeout);
flush_tables(&V_layer3_chain);
V_layer3_chain.reap = NULL;
free_chain(&V_layer3_chain, 1 /* kill default rule */);
@ -4803,21 +4819,10 @@ ipfw_modevent(module_t mod, int type, void *unused)
/* Called once at module load or
* system boot if compiled in. */
break;
case MOD_UNLOAD:
break;
case MOD_QUIESCE:
/* Yes, the unhooks can return errors, we can safely ignore
* them. Eventually these will be done per jail as they
* shut down. We will wait on each vnet's l3 lock as existing
* callers go away.
*/
ipfw_unhook();
#ifdef INET6
ipfw6_unhook();
#endif
/* layer2 and other entrypoints still come in this way. */
ip_fw_chk_ptr = NULL;
ip_fw_ctl_ptr = NULL;
/* Called before unload. May veto unloading. */
break;
case MOD_UNLOAD:
/* Called during unload. */
break;
case MOD_SHUTDOWN:
@ -4866,4 +4871,3 @@ SYSUNINIT(ipfw_destroy, IPFW_SI_SUB_FIREWALL, IPFW_MODULE_ORDER,
VNET_SYSUNINIT(vnet_ipfw_uninit, IPFW_SI_SUB_FIREWALL, IPFW_VNET_ORDER,
vnet_ipfw_uninit, NULL);

36
sys/netinet/ipfw/ip_fw_pfil.c
View File

@ -515,42 +515,54 @@ ipfw6_unhook(void)
int
ipfw_chg_hook(SYSCTL_HANDLER_ARGS)
{
int enable = *(int *)arg1;
int enable;
int oldenable;
int error;
#ifdef VIMAGE /* Since enabling is global, only let base do it. */
if (! IS_DEFAULT_VNET(curvnet))
return (EPERM);
if (arg1 == &VNET_NAME(fw_enable)) {
enable = V_fw_enable;
}
#ifdef INET6
else if (arg1 == &VNET_NAME(fw6_enable)) {
enable = V_fw6_enable;
}
#endif
else
return (EINVAL);
oldenable = enable;
error = sysctl_handle_int(oidp, &enable, 0, req);
if (error)
return (error);
enable = (enable) ? 1 : 0;
if (enable == *(int *)arg1)
if (enable == oldenable)
return (0);
if (arg1 == &V_fw_enable) {
if (arg1 == &VNET_NAME(fw_enable)) {
if (enable)
error = ipfw_hook();
else
error = ipfw_unhook();
if (error)
return (error);
V_fw_enable = enable;
}
#ifdef INET6
if (arg1 == &V_fw6_enable) {
else if (arg1 == &VNET_NAME(fw6_enable)) {
if (enable)
error = ipfw6_hook();
else
error = ipfw6_unhook();
if (error)
return (error);
V_fw6_enable = enable;
}
#endif
if (error)
return (error);
*(int *)arg1 = enable;
return (0);
}

12
sys/netinet/raw_ip.c
View File

@ -84,9 +84,9 @@ VNET_DEFINE(struct inpcbinfo, ripcbinfo);
* The data hooks are not used here but it is convenient
* to keep them all in one place.
*/
int (*ip_fw_ctl_ptr)(struct sockopt *) = NULL;
VNET_DEFINE(ip_fw_chk_ptr_t, ip_fw_chk_ptr) = NULL;
VNET_DEFINE(ip_fw_ctl_ptr_t, ip_fw_ctl_ptr) = NULL;
int (*ip_dn_ctl_ptr)(struct sockopt *) = NULL;
int (*ip_fw_chk_ptr)(struct ip_fw_args *args) = NULL;
int (*ip_dn_io_ptr)(struct mbuf **m, int dir, struct ip_fw_args *fwa) = NULL;
/*
@ -523,8 +523,8 @@ rip_ctloutput(struct socket *so, struct sockopt *sopt)
case IP_FW_TABLE_LIST:
case IP_FW_NAT_GET_CONFIG:
case IP_FW_NAT_GET_LOG:
if (ip_fw_ctl_ptr != NULL)
error = ip_fw_ctl_ptr(sopt);
if (V_ip_fw_ctl_ptr != NULL)
error = V_ip_fw_ctl_ptr(sopt);
else
error = ENOPROTOOPT;
break;
@ -584,8 +584,8 @@ rip_ctloutput(struct socket *so, struct sockopt *sopt)
case IP_FW_TABLE_FLUSH:
case IP_FW_NAT_CFG:
case IP_FW_NAT_DEL:
if (ip_fw_ctl_ptr != NULL)
error = ip_fw_ctl_ptr(sopt);
if (V_ip_fw_ctl_ptr != NULL)
error = V_ip_fw_ctl_ptr(sopt);
else
error = ENOPROTOOPT;
break;

4
sys/netinet6/ip6_forward.c
View File

@ -551,11 +551,11 @@ ip6_forward(struct mbuf *m, int srcrt)
in6_clearscope(&ip6->ip6_dst);
/* Jump over all PFIL processing if hooks are not active. */
if (!PFIL_HOOKED(&inet6_pfil_hook))
if (!PFIL_HOOKED(&V_inet6_pfil_hook))
goto pass;
/* Run through list of hooks for output packets. */
error = pfil_run_hooks(&inet6_pfil_hook, &m, rt->rt_ifp, PFIL_OUT, NULL);
error = pfil_run_hooks(&V_inet6_pfil_hook, &m, rt->rt_ifp, PFIL_OUT, NULL);
if (error != 0)
goto senderr;
if (m == NULL)

21
sys/netinet6/ip6_input.c
View File

@ -152,7 +152,7 @@ VNET_DECLARE(int, udp6_recvspace);
struct rwlock in6_ifaddr_lock;
RW_SYSINIT(in6_ifaddr_lock, &in6_ifaddr_lock, "in6_ifaddr_lock");
struct pfil_head inet6_pfil_hook;
VNET_DEFINE (struct pfil_head, inet6_pfil_hook);
static void ip6_init2(void *);
static struct ip6aux *ip6_setdstifaddr(struct mbuf *, struct in6_ifaddr *);
@ -247,6 +247,13 @@ ip6_init(void)
V_ip6_desync_factor = arc4random() % MAX_TEMP_DESYNC_FACTOR;
/* Initialize packet filter hooks. */
V_inet6_pfil_hook.ph_type = PFIL_TYPE_AF;
V_inet6_pfil_hook.ph_af = AF_INET6;
if ((i = pfil_head_register(&V_inet6_pfil_hook)) != 0)
printf("%s: WARNING: unable to register pfil hook, "
"error %d\n", __func__, i);
/* Skip global initialization stuff for non-default instances. */
if (!IS_DEFAULT_VNET(curvnet))
return;
@ -275,13 +282,6 @@ ip6_init(void)
ip6_protox[pr->pr_protocol] = pr - inet6sw;
}
/* Initialize packet filter hooks. */
inet6_pfil_hook.ph_type = PFIL_TYPE_AF;
inet6_pfil_hook.ph_af = AF_INET6;
if ((i = pfil_head_register(&inet6_pfil_hook)) != 0)
printf("%s: WARNING: unable to register pfil hook, "
"error %d\n", __func__, i);
netisr_register(&ip6_nh);
}
@ -515,10 +515,11 @@ ip6_input(struct mbuf *m)
odst = ip6->ip6_dst;
/* Jump over all PFIL processing if hooks are not active. */
if (!PFIL_HOOKED(&inet6_pfil_hook))
if (!PFIL_HOOKED(&V_inet6_pfil_hook))
goto passin;
if (pfil_run_hooks(&inet6_pfil_hook, &m, m->m_pkthdr.rcvif, PFIL_IN, NULL))
if (pfil_run_hooks(&V_inet6_pfil_hook, &m,
m->m_pkthdr.rcvif, PFIL_IN, NULL))
return;
if (m == NULL) /* consumed by filter */
return;

4
sys/netinet6/ip6_output.c
View File

@ -805,12 +805,12 @@ skip_ipsec2:;
}
/* Jump over all PFIL processing if hooks are not active. */
if (!PFIL_HOOKED(&inet6_pfil_hook))
if (!PFIL_HOOKED(&V_inet6_pfil_hook))
goto passout;
odst = ip6->ip6_dst;
/* Run through list of hooks for output packets. */
error = pfil_run_hooks(&inet6_pfil_hook, &m, ifp, PFIL_OUT, inp);
error = pfil_run_hooks(&V_inet6_pfil_hook, &m, ifp, PFIL_OUT, inp);
if (error != 0 || m == NULL)
goto done;
ip6 = mtod(m, struct ip6_hdr *);

3
sys/netinet6/ip6_var.h
View File

@ -358,7 +358,8 @@ VNET_DECLARE(int, ip6_use_defzone); /* Whether to use the default scope
#endif
#define V_ip6_use_defzone VNET(ip6_use_defzone)
extern struct pfil_head inet6_pfil_hook; /* packet filter hooks */
VNET_DECLARE (struct pfil_head, inet6_pfil_hook); /* packet filter hooks */
#define V_inet6_pfil_hook VNET(inet6_pfil_hook)
extern struct pr_usrreqs rip6_usrreqs;
struct sockopt;