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ip_fil_solaris.c
2862 lines (2550 loc) · 77.3 KB
/
ip_fil_solaris.c
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/*
* Copyright (C) 1993-2001, 2003 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#if !defined(lint)
static const char sccsid[] = "@(#)ip_fil_solaris.c 1.7 07/22/06 (C) 1993-2000 Darren Reed";
static const char rcsid[] = "@(#)$Id: ip_fil_solaris.c,v 2.62.2.19 2005/07/13 21:40:46 darrenr Exp $";
#endif
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/param.h>
#include <sys/cpuvar.h>
#include <sys/open.h>
#include <sys/ioctl.h>
#include <sys/filio.h>
#include <sys/systm.h>
#include <sys/strsubr.h>
#include <sys/cred.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/ksynch.h>
#include <sys/kmem.h>
#include <sys/mkdev.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/dditypes.h>
#include <sys/cmn_err.h>
#include <sys/zone.h>
#include <net/if.h>
#include <net/af.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <netinet/tcpip.h>
#include <netinet/ip_icmp.h>
#include "netinet/ip_compat.h"
#ifdef USE_INET6
# include <netinet/icmp6.h>
#endif
#include "netinet/ip_fil.h"
#include "netinet/ip_nat.h"
#include "netinet/ip_frag.h"
#include "netinet/ip_state.h"
#include "netinet/ip_auth.h"
#include "netinet/ip_proxy.h"
#include "netinet/ipf_stack.h"
#ifdef IPFILTER_LOOKUP
# include "netinet/ip_lookup.h"
#endif
#include <inet/ip_ire.h>
#include <sys/md5.h>
#include <sys/neti.h>
static int frzerostats __P((caddr_t, ipf_stack_t *));
static int fr_setipfloopback __P((int, ipf_stack_t *));
static int fr_enableipf __P((ipf_stack_t *, int));
static int fr_send_ip __P((fr_info_t *fin, mblk_t *m, mblk_t **mp));
static int ipf_nic_event_v4 __P((hook_event_token_t, hook_data_t, void *));
static int ipf_nic_event_v6 __P((hook_event_token_t, hook_data_t, void *));
static int ipf_hook __P((hook_data_t, int, int, void *));
static int ipf_hook4_in __P((hook_event_token_t, hook_data_t, void *));
static int ipf_hook4_out __P((hook_event_token_t, hook_data_t, void *));
static int ipf_hook4_loop_out __P((hook_event_token_t, hook_data_t,
void *));
static int ipf_hook4_loop_in __P((hook_event_token_t, hook_data_t, void *));
static int ipf_hook4 __P((hook_data_t, int, int, void *));
static int ipf_hook6_out __P((hook_event_token_t, hook_data_t, void *));
static int ipf_hook6_in __P((hook_event_token_t, hook_data_t, void *));
static int ipf_hook6_loop_out __P((hook_event_token_t, hook_data_t,
void *));
static int ipf_hook6_loop_in __P((hook_event_token_t, hook_data_t,
void *));
static int ipf_hook6 __P((hook_data_t, int, int, void *));
extern int ipf_geniter __P((ipftoken_t *, ipfgeniter_t *, ipf_stack_t *));
extern int ipf_frruleiter __P((void *, int, void *, ipf_stack_t *));
#if SOLARIS2 < 10
#if SOLARIS2 >= 7
u_int *ip_ttl_ptr = NULL;
u_int *ip_mtudisc = NULL;
# if SOLARIS2 >= 8
int *ip_forwarding = NULL;
u_int *ip6_forwarding = NULL;
# else
u_int *ip_forwarding = NULL;
# endif
#else
u_long *ip_ttl_ptr = NULL;
u_long *ip_mtudisc = NULL;
u_long *ip_forwarding = NULL;
#endif
#endif
/* ------------------------------------------------------------------------ */
/* Function: ipldetach */
/* Returns: int - 0 == success, else error. */
/* Parameters: Nil */
/* */
/* This function is responsible for undoing anything that might have been */
/* done in a call to iplattach(). It must be able to clean up from a call */
/* to iplattach() that did not succeed. Why might that happen? Someone */
/* configures a table to be so large that we cannot allocate enough memory */
/* for it. */
/* ------------------------------------------------------------------------ */
int ipldetach(ifs)
ipf_stack_t *ifs;
{
ASSERT(rw_read_locked(&ifs->ifs_ipf_global.ipf_lk) == 0);
#if SOLARIS2 < 10
if (ifs->ifs_fr_control_forwarding & 2) {
if (ip_forwarding != NULL)
*ip_forwarding = 0;
#if SOLARIS2 >= 8
if (ip6_forwarding != NULL)
*ip6_forwarding = 0;
#endif
}
#endif
/*
* This lock needs to be dropped around the net_hook_unregister calls
* because we can deadlock here with:
* W(ipf_global)->R(hook_family)->W(hei_lock) (this code path) vs
* R(hook_family)->R(hei_lock)->R(ipf_global) (active hook running)
*/
RWLOCK_EXIT(&ifs->ifs_ipf_global);
#define UNDO_HOOK(_f, _b, _e, _h) \
do { \
if (ifs->_f != NULL) { \
if (ifs->_b) { \
int tmp = net_hook_unregister(ifs->_f, \
_e, ifs->_h); \
ifs->_b = (tmp != 0 && tmp != ENXIO); \
if (!ifs->_b && ifs->_h != NULL) { \
hook_free(ifs->_h); \
ifs->_h = NULL; \
} \
} else if (ifs->_h != NULL) { \
hook_free(ifs->_h); \
ifs->_h = NULL; \
} \
} \
_NOTE(CONSTCOND) \
} while (0)
/*
* Remove IPv6 Hooks
*/
if (ifs->ifs_ipf_ipv6 != NULL) {
UNDO_HOOK(ifs_ipf_ipv6, ifs_hook6_physical_in,
NH_PHYSICAL_IN, ifs_ipfhook6_in);
UNDO_HOOK(ifs_ipf_ipv6, ifs_hook6_physical_out,
NH_PHYSICAL_OUT, ifs_ipfhook6_out);
UNDO_HOOK(ifs_ipf_ipv6, ifs_hook6_nic_events,
NH_NIC_EVENTS, ifs_ipfhook6_nicevents);
UNDO_HOOK(ifs_ipf_ipv6, ifs_hook6_loopback_in,
NH_LOOPBACK_IN, ifs_ipfhook6_loop_in);
UNDO_HOOK(ifs_ipf_ipv6, ifs_hook6_loopback_out,
NH_LOOPBACK_OUT, ifs_ipfhook6_loop_out);
if (net_protocol_release(ifs->ifs_ipf_ipv6) != 0)
goto detach_failed;
ifs->ifs_ipf_ipv6 = NULL;
}
/*
* Remove IPv4 Hooks
*/
if (ifs->ifs_ipf_ipv4 != NULL) {
UNDO_HOOK(ifs_ipf_ipv4, ifs_hook4_physical_in,
NH_PHYSICAL_IN, ifs_ipfhook4_in);
UNDO_HOOK(ifs_ipf_ipv4, ifs_hook4_physical_out,
NH_PHYSICAL_OUT, ifs_ipfhook4_out);
UNDO_HOOK(ifs_ipf_ipv4, ifs_hook4_nic_events,
NH_NIC_EVENTS, ifs_ipfhook4_nicevents);
UNDO_HOOK(ifs_ipf_ipv4, ifs_hook4_loopback_in,
NH_LOOPBACK_IN, ifs_ipfhook4_loop_in);
UNDO_HOOK(ifs_ipf_ipv4, ifs_hook4_loopback_out,
NH_LOOPBACK_OUT, ifs_ipfhook4_loop_out);
if (net_protocol_release(ifs->ifs_ipf_ipv4) != 0)
goto detach_failed;
ifs->ifs_ipf_ipv4 = NULL;
}
#undef UNDO_HOOK
#ifdef IPFDEBUG
cmn_err(CE_CONT, "ipldetach()\n");
#endif
WRITE_ENTER(&ifs->ifs_ipf_global);
fr_deinitialise(ifs);
(void) frflush(IPL_LOGIPF, 0, FR_INQUE|FR_OUTQUE|FR_INACTIVE, ifs);
(void) frflush(IPL_LOGIPF, 0, FR_INQUE|FR_OUTQUE, ifs);
if (ifs->ifs_ipf_locks_done == 1) {
MUTEX_DESTROY(&ifs->ifs_ipf_timeoutlock);
MUTEX_DESTROY(&ifs->ifs_ipf_rw);
RW_DESTROY(&ifs->ifs_ipf_tokens);
RW_DESTROY(&ifs->ifs_ipf_ipidfrag);
ifs->ifs_ipf_locks_done = 0;
}
if (ifs->ifs_hook4_physical_in || ifs->ifs_hook4_physical_out ||
ifs->ifs_hook4_nic_events || ifs->ifs_hook4_loopback_in ||
ifs->ifs_hook4_loopback_out || ifs->ifs_hook6_nic_events ||
ifs->ifs_hook6_physical_in || ifs->ifs_hook6_physical_out ||
ifs->ifs_hook6_loopback_in || ifs->ifs_hook6_loopback_out)
return -1;
return 0;
detach_failed:
WRITE_ENTER(&ifs->ifs_ipf_global);
return -1;
}
int iplattach(ifs)
ipf_stack_t *ifs;
{
#if SOLARIS2 < 10
int i;
#endif
netid_t id = ifs->ifs_netid;
#ifdef IPFDEBUG
cmn_err(CE_CONT, "iplattach()\n");
#endif
ASSERT(rw_read_locked(&ifs->ifs_ipf_global.ipf_lk) == 0);
ifs->ifs_fr_flags = IPF_LOGGING;
#ifdef _KERNEL
ifs->ifs_fr_update_ipid = 0;
#else
ifs->ifs_fr_update_ipid = 1;
#endif
ifs->ifs_fr_minttl = 4;
ifs->ifs_fr_icmpminfragmtu = 68;
#if defined(IPFILTER_DEFAULT_BLOCK)
ifs->ifs_fr_pass = FR_BLOCK|FR_NOMATCH;
#else
ifs->ifs_fr_pass = (IPF_DEFAULT_PASS)|FR_NOMATCH;
#endif
bzero((char *)ifs->ifs_frcache, sizeof(ifs->ifs_frcache));
MUTEX_INIT(&ifs->ifs_ipf_rw, "ipf rw mutex");
MUTEX_INIT(&ifs->ifs_ipf_timeoutlock, "ipf timeout lock mutex");
RWLOCK_INIT(&ifs->ifs_ipf_ipidfrag, "ipf IP NAT-Frag rwlock");
RWLOCK_INIT(&ifs->ifs_ipf_tokens, "ipf token rwlock");
ifs->ifs_ipf_locks_done = 1;
if (fr_initialise(ifs) < 0)
return -1;
HOOK_INIT(ifs->ifs_ipfhook4_nicevents, ipf_nic_event_v4,
"ipfilter_hook4_nicevents", ifs);
HOOK_INIT(ifs->ifs_ipfhook4_in, ipf_hook4_in,
"ipfilter_hook4_in", ifs);
HOOK_INIT(ifs->ifs_ipfhook4_out, ipf_hook4_out,
"ipfilter_hook4_out", ifs);
HOOK_INIT(ifs->ifs_ipfhook4_loop_in, ipf_hook4_loop_in,
"ipfilter_hook4_loop_in", ifs);
HOOK_INIT(ifs->ifs_ipfhook4_loop_out, ipf_hook4_loop_out,
"ipfilter_hook4_loop_out", ifs);
/*
* If we hold this lock over all of the net_hook_register calls, we
* can cause a deadlock to occur with the following lock ordering:
* W(ipf_global)->R(hook_family)->W(hei_lock) (this code path) vs
* R(hook_family)->R(hei_lock)->R(ipf_global) (packet path)
*/
RWLOCK_EXIT(&ifs->ifs_ipf_global);
/*
* Add IPv4 hooks
*/
ifs->ifs_ipf_ipv4 = net_protocol_lookup(id, NHF_INET);
if (ifs->ifs_ipf_ipv4 == NULL)
goto hookup_failed;
ifs->ifs_hook4_nic_events = (net_hook_register(ifs->ifs_ipf_ipv4,
NH_NIC_EVENTS, ifs->ifs_ipfhook4_nicevents) == 0);
if (!ifs->ifs_hook4_nic_events)
goto hookup_failed;
ifs->ifs_hook4_physical_in = (net_hook_register(ifs->ifs_ipf_ipv4,
NH_PHYSICAL_IN, ifs->ifs_ipfhook4_in) == 0);
if (!ifs->ifs_hook4_physical_in)
goto hookup_failed;
ifs->ifs_hook4_physical_out = (net_hook_register(ifs->ifs_ipf_ipv4,
NH_PHYSICAL_OUT, ifs->ifs_ipfhook4_out) == 0);
if (!ifs->ifs_hook4_physical_out)
goto hookup_failed;
if (ifs->ifs_ipf_loopback) {
ifs->ifs_hook4_loopback_in = (net_hook_register(
ifs->ifs_ipf_ipv4, NH_LOOPBACK_IN,
ifs->ifs_ipfhook4_loop_in) == 0);
if (!ifs->ifs_hook4_loopback_in)
goto hookup_failed;
ifs->ifs_hook4_loopback_out = (net_hook_register(
ifs->ifs_ipf_ipv4, NH_LOOPBACK_OUT,
ifs->ifs_ipfhook4_loop_out) == 0);
if (!ifs->ifs_hook4_loopback_out)
goto hookup_failed;
}
/*
* Add IPv6 hooks
*/
ifs->ifs_ipf_ipv6 = net_protocol_lookup(id, NHF_INET6);
if (ifs->ifs_ipf_ipv6 == NULL)
goto hookup_failed;
HOOK_INIT(ifs->ifs_ipfhook6_nicevents, ipf_nic_event_v6,
"ipfilter_hook6_nicevents", ifs);
HOOK_INIT(ifs->ifs_ipfhook6_in, ipf_hook6_in,
"ipfilter_hook6_in", ifs);
HOOK_INIT(ifs->ifs_ipfhook6_out, ipf_hook6_out,
"ipfilter_hook6_out", ifs);
HOOK_INIT(ifs->ifs_ipfhook6_loop_in, ipf_hook6_loop_in,
"ipfilter_hook6_loop_in", ifs);
HOOK_INIT(ifs->ifs_ipfhook6_loop_out, ipf_hook6_loop_out,
"ipfilter_hook6_loop_out", ifs);
ifs->ifs_hook6_nic_events = (net_hook_register(ifs->ifs_ipf_ipv6,
NH_NIC_EVENTS, ifs->ifs_ipfhook6_nicevents) == 0);
if (!ifs->ifs_hook6_nic_events)
goto hookup_failed;
ifs->ifs_hook6_physical_in = (net_hook_register(ifs->ifs_ipf_ipv6,
NH_PHYSICAL_IN, ifs->ifs_ipfhook6_in) == 0);
if (!ifs->ifs_hook6_physical_in)
goto hookup_failed;
ifs->ifs_hook6_physical_out = (net_hook_register(ifs->ifs_ipf_ipv6,
NH_PHYSICAL_OUT, ifs->ifs_ipfhook6_out) == 0);
if (!ifs->ifs_hook6_physical_out)
goto hookup_failed;
if (ifs->ifs_ipf_loopback) {
ifs->ifs_hook6_loopback_in = (net_hook_register(
ifs->ifs_ipf_ipv6, NH_LOOPBACK_IN,
ifs->ifs_ipfhook6_loop_in) == 0);
if (!ifs->ifs_hook6_loopback_in)
goto hookup_failed;
ifs->ifs_hook6_loopback_out = (net_hook_register(
ifs->ifs_ipf_ipv6, NH_LOOPBACK_OUT,
ifs->ifs_ipfhook6_loop_out) == 0);
if (!ifs->ifs_hook6_loopback_out)
goto hookup_failed;
}
/*
* Reacquire ipf_global, now it is safe.
*/
WRITE_ENTER(&ifs->ifs_ipf_global);
/* Do not use private interface ip_params_arr[] in Solaris 10 */
#if SOLARIS2 < 10
#if SOLARIS2 >= 8
ip_forwarding = &ip_g_forward;
#endif
/*
* XXX - There is no terminator for this array, so it is not possible
* to tell if what we are looking for is missing and go off the end
* of the array.
*/
#if SOLARIS2 <= 8
for (i = 0; ; i++) {
if (!strcmp(ip_param_arr[i].ip_param_name, "ip_def_ttl")) {
ip_ttl_ptr = &ip_param_arr[i].ip_param_value;
} else if (!strcmp(ip_param_arr[i].ip_param_name,
"ip_path_mtu_discovery")) {
ip_mtudisc = &ip_param_arr[i].ip_param_value;
}
#if SOLARIS2 < 8
else if (!strcmp(ip_param_arr[i].ip_param_name,
"ip_forwarding")) {
ip_forwarding = &ip_param_arr[i].ip_param_value;
}
#else
else if (!strcmp(ip_param_arr[i].ip_param_name,
"ip6_forwarding")) {
ip6_forwarding = &ip_param_arr[i].ip_param_value;
}
#endif
if (ip_mtudisc != NULL && ip_ttl_ptr != NULL &&
#if SOLARIS2 >= 8
ip6_forwarding != NULL &&
#endif
ip_forwarding != NULL)
break;
}
#endif
if (ifs->ifs_fr_control_forwarding & 1) {
if (ip_forwarding != NULL)
*ip_forwarding = 1;
#if SOLARIS2 >= 8
if (ip6_forwarding != NULL)
*ip6_forwarding = 1;
#endif
}
#endif
return 0;
hookup_failed:
WRITE_ENTER(&ifs->ifs_ipf_global);
return -1;
}
static int fr_setipfloopback(set, ifs)
int set;
ipf_stack_t *ifs;
{
if (ifs->ifs_ipf_ipv4 == NULL || ifs->ifs_ipf_ipv6 == NULL)
return EFAULT;
if (set && !ifs->ifs_ipf_loopback) {
ifs->ifs_ipf_loopback = 1;
ifs->ifs_hook4_loopback_in = (net_hook_register(
ifs->ifs_ipf_ipv4, NH_LOOPBACK_IN,
ifs->ifs_ipfhook4_loop_in) == 0);
if (!ifs->ifs_hook4_loopback_in)
return EINVAL;
ifs->ifs_hook4_loopback_out = (net_hook_register(
ifs->ifs_ipf_ipv4, NH_LOOPBACK_OUT,
ifs->ifs_ipfhook4_loop_out) == 0);
if (!ifs->ifs_hook4_loopback_out)
return EINVAL;
ifs->ifs_hook6_loopback_in = (net_hook_register(
ifs->ifs_ipf_ipv6, NH_LOOPBACK_IN,
ifs->ifs_ipfhook6_loop_in) == 0);
if (!ifs->ifs_hook6_loopback_in)
return EINVAL;
ifs->ifs_hook6_loopback_out = (net_hook_register(
ifs->ifs_ipf_ipv6, NH_LOOPBACK_OUT,
ifs->ifs_ipfhook6_loop_out) == 0);
if (!ifs->ifs_hook6_loopback_out)
return EINVAL;
} else if (!set && ifs->ifs_ipf_loopback) {
ifs->ifs_ipf_loopback = 0;
ifs->ifs_hook4_loopback_in =
(net_hook_unregister(ifs->ifs_ipf_ipv4,
NH_LOOPBACK_IN, ifs->ifs_ipfhook4_loop_in) != 0);
if (ifs->ifs_hook4_loopback_in)
return EBUSY;
ifs->ifs_hook4_loopback_out =
(net_hook_unregister(ifs->ifs_ipf_ipv4,
NH_LOOPBACK_OUT, ifs->ifs_ipfhook4_loop_out) != 0);
if (ifs->ifs_hook4_loopback_out)
return EBUSY;
ifs->ifs_hook6_loopback_in =
(net_hook_unregister(ifs->ifs_ipf_ipv6,
NH_LOOPBACK_IN, ifs->ifs_ipfhook4_loop_in) != 0);
if (ifs->ifs_hook6_loopback_in)
return EBUSY;
ifs->ifs_hook6_loopback_out =
(net_hook_unregister(ifs->ifs_ipf_ipv6,
NH_LOOPBACK_OUT, ifs->ifs_ipfhook6_loop_out) != 0);
if (ifs->ifs_hook6_loopback_out)
return EBUSY;
}
return 0;
}
/*
* Filter ioctl interface.
*/
/*ARGSUSED*/
int iplioctl(dev, cmd, data, mode, cp, rp)
dev_t dev;
int cmd;
#if SOLARIS2 >= 7
intptr_t data;
#else
int *data;
#endif
int mode;
cred_t *cp;
int *rp;
{
int error = 0, tmp;
friostat_t fio;
minor_t unit;
u_int enable;
ipf_stack_t *ifs;
#ifdef IPFDEBUG
cmn_err(CE_CONT, "iplioctl(%x,%x,%x,%d,%x,%d)\n",
dev, cmd, data, mode, cp, rp);
#endif
unit = getminor(dev);
if (IPL_LOGMAX < unit)
return ENXIO;
/*
* As we're calling ipf_find_stack in user space, from a given zone
* to find the stack pointer for this zone, there is no need to have
* a hold/refence count here.
*/
ifs = ipf_find_stack(crgetzoneid(cp));
ASSERT(ifs != NULL);
if (ifs->ifs_fr_running <= 0) {
if (unit != IPL_LOGIPF) {
return EIO;
}
if (cmd != SIOCIPFGETNEXT && cmd != SIOCIPFGET &&
cmd != SIOCIPFSET && cmd != SIOCFRENB &&
cmd != SIOCGETFS && cmd != SIOCGETFF) {
return EIO;
}
}
READ_ENTER(&ifs->ifs_ipf_global);
if (ifs->ifs_fr_enable_active != 0) {
RWLOCK_EXIT(&ifs->ifs_ipf_global);
return EBUSY;
}
error = fr_ioctlswitch(unit, (caddr_t)data, cmd, mode, crgetuid(cp),
curproc, ifs);
if (error != -1) {
RWLOCK_EXIT(&ifs->ifs_ipf_global);
return error;
}
error = 0;
switch (cmd)
{
case SIOCFRENB :
if (!(mode & FWRITE))
error = EPERM;
else {
error = COPYIN((caddr_t)data, (caddr_t)&enable,
sizeof(enable));
if (error != 0) {
error = EFAULT;
break;
}
RWLOCK_EXIT(&ifs->ifs_ipf_global);
WRITE_ENTER(&ifs->ifs_ipf_global);
/*
* We must recheck fr_enable_active here, since we've
* dropped ifs_ipf_global from R in order to get it
* exclusively.
*/
if (ifs->ifs_fr_enable_active == 0) {
ifs->ifs_fr_enable_active = 1;
error = fr_enableipf(ifs, enable);
ifs->ifs_fr_enable_active = 0;
}
}
break;
case SIOCIPFSET :
if (!(mode & FWRITE)) {
error = EPERM;
break;
}
/* FALLTHRU */
case SIOCIPFGETNEXT :
case SIOCIPFGET :
error = fr_ipftune(cmd, (void *)data, ifs);
break;
case SIOCSETFF :
if (!(mode & FWRITE))
error = EPERM;
else {
error = COPYIN((caddr_t)data,
(caddr_t)&ifs->ifs_fr_flags,
sizeof(ifs->ifs_fr_flags));
if (error != 0)
error = EFAULT;
}
break;
case SIOCIPFLP :
error = COPYIN((caddr_t)data, (caddr_t)&tmp,
sizeof(tmp));
if (error != 0)
error = EFAULT;
else
error = fr_setipfloopback(tmp, ifs);
break;
case SIOCGETFF :
error = COPYOUT((caddr_t)&ifs->ifs_fr_flags, (caddr_t)data,
sizeof(ifs->ifs_fr_flags));
if (error != 0)
error = EFAULT;
break;
case SIOCFUNCL :
error = fr_resolvefunc((void *)data);
break;
case SIOCINAFR :
case SIOCRMAFR :
case SIOCADAFR :
case SIOCZRLST :
if (!(mode & FWRITE))
error = EPERM;
else
error = frrequest(unit, cmd, (caddr_t)data,
ifs->ifs_fr_active, 1, ifs);
break;
case SIOCINIFR :
case SIOCRMIFR :
case SIOCADIFR :
if (!(mode & FWRITE))
error = EPERM;
else
error = frrequest(unit, cmd, (caddr_t)data,
1 - ifs->ifs_fr_active, 1, ifs);
break;
case SIOCSWAPA :
if (!(mode & FWRITE))
error = EPERM;
else {
WRITE_ENTER(&ifs->ifs_ipf_mutex);
bzero((char *)ifs->ifs_frcache,
sizeof (ifs->ifs_frcache));
error = COPYOUT((caddr_t)&ifs->ifs_fr_active,
(caddr_t)data,
sizeof(ifs->ifs_fr_active));
if (error != 0)
error = EFAULT;
else
ifs->ifs_fr_active = 1 - ifs->ifs_fr_active;
RWLOCK_EXIT(&ifs->ifs_ipf_mutex);
}
break;
case SIOCGETFS :
fr_getstat(&fio, ifs);
error = fr_outobj((void *)data, &fio, IPFOBJ_IPFSTAT);
break;
case SIOCFRZST :
if (!(mode & FWRITE))
error = EPERM;
else
error = fr_zerostats((caddr_t)data, ifs);
break;
case SIOCIPFFL :
if (!(mode & FWRITE))
error = EPERM;
else {
error = COPYIN((caddr_t)data, (caddr_t)&tmp,
sizeof(tmp));
if (!error) {
tmp = frflush(unit, 4, tmp, ifs);
error = COPYOUT((caddr_t)&tmp, (caddr_t)data,
sizeof(tmp));
if (error != 0)
error = EFAULT;
} else
error = EFAULT;
}
break;
#ifdef USE_INET6
case SIOCIPFL6 :
if (!(mode & FWRITE))
error = EPERM;
else {
error = COPYIN((caddr_t)data, (caddr_t)&tmp,
sizeof(tmp));
if (!error) {
tmp = frflush(unit, 6, tmp, ifs);
error = COPYOUT((caddr_t)&tmp, (caddr_t)data,
sizeof(tmp));
if (error != 0)
error = EFAULT;
} else
error = EFAULT;
}
break;
#endif
case SIOCSTLCK :
error = COPYIN((caddr_t)data, (caddr_t)&tmp, sizeof(tmp));
if (error == 0) {
ifs->ifs_fr_state_lock = tmp;
ifs->ifs_fr_nat_lock = tmp;
ifs->ifs_fr_frag_lock = tmp;
ifs->ifs_fr_auth_lock = tmp;
} else
error = EFAULT;
break;
#ifdef IPFILTER_LOG
case SIOCIPFFB :
if (!(mode & FWRITE))
error = EPERM;
else {
tmp = ipflog_clear(unit, ifs);
error = COPYOUT((caddr_t)&tmp, (caddr_t)data,
sizeof(tmp));
if (error)
error = EFAULT;
}
break;
#endif /* IPFILTER_LOG */
case SIOCFRSYN :
if (!(mode & FWRITE))
error = EPERM;
else {
RWLOCK_EXIT(&ifs->ifs_ipf_global);
WRITE_ENTER(&ifs->ifs_ipf_global);
frsync(IPFSYNC_RESYNC, 0, NULL, NULL, ifs);
fr_natifpsync(IPFSYNC_RESYNC, 0, NULL, NULL, ifs);
fr_nataddrsync(0, NULL, NULL, ifs);
fr_statesync(IPFSYNC_RESYNC, 0, NULL, NULL, ifs);
error = 0;
}
break;
case SIOCGFRST :
error = fr_outobj((void *)data, fr_fragstats(ifs),
IPFOBJ_FRAGSTAT);
break;
case FIONREAD :
#ifdef IPFILTER_LOG
tmp = (int)ifs->ifs_iplused[IPL_LOGIPF];
error = COPYOUT((caddr_t)&tmp, (caddr_t)data, sizeof(tmp));
if (error != 0)
error = EFAULT;
#endif
break;
case SIOCIPFITER :
error = ipf_frruleiter((caddr_t)data, crgetuid(cp),
curproc, ifs);
break;
case SIOCGENITER :
error = ipf_genericiter((caddr_t)data, crgetuid(cp),
curproc, ifs);
break;
case SIOCIPFDELTOK :
error = BCOPYIN((caddr_t)data, (caddr_t)&tmp, sizeof(tmp));
if (error != 0) {
error = EFAULT;
} else {
error = ipf_deltoken(tmp, crgetuid(cp), curproc, ifs);
}
break;
default :
#ifdef IPFDEBUG
cmn_err(CE_NOTE, "Unknown: cmd 0x%x data %p",
cmd, (void *)data);
#endif
error = EINVAL;
break;
}
RWLOCK_EXIT(&ifs->ifs_ipf_global);
return error;
}
static int fr_enableipf(ifs, enable)
ipf_stack_t *ifs;
int enable;
{
int error;
if (!enable) {
error = ipldetach(ifs);
if (error == 0)
ifs->ifs_fr_running = -1;
return error;
}
if (ifs->ifs_fr_running > 0)
return 0;
error = iplattach(ifs);
if (error == 0) {
if (ifs->ifs_fr_timer_id == NULL) {
int hz = drv_usectohz(500000);
ifs->ifs_fr_timer_id = timeout(fr_slowtimer,
(void *)ifs,
hz);
}
ifs->ifs_fr_running = 1;
} else {
(void) ipldetach(ifs);
}
return error;
}
phy_if_t get_unit(name, v, ifs)
char *name;
int v;
ipf_stack_t *ifs;
{
net_handle_t nif;
if (v == 4)
nif = ifs->ifs_ipf_ipv4;
else if (v == 6)
nif = ifs->ifs_ipf_ipv6;
else
return 0;
return (net_phylookup(nif, name));
}
/*
* routines below for saving IP headers to buffer
*/
/*ARGSUSED*/
int iplopen(devp, flags, otype, cred)
dev_t *devp;
int flags, otype;
cred_t *cred;
{
minor_t min = getminor(*devp);
#ifdef IPFDEBUG
cmn_err(CE_CONT, "iplopen(%x,%x,%x,%x)\n", devp, flags, otype, cred);
#endif
if (!(otype & OTYP_CHR))
return ENXIO;
min = (IPL_LOGMAX < min) ? ENXIO : 0;
return min;
}
/*ARGSUSED*/
int iplclose(dev, flags, otype, cred)
dev_t dev;
int flags, otype;
cred_t *cred;
{
minor_t min = getminor(dev);
#ifdef IPFDEBUG
cmn_err(CE_CONT, "iplclose(%x,%x,%x,%x)\n", dev, flags, otype, cred);
#endif
min = (IPL_LOGMAX < min) ? ENXIO : 0;
return min;
}
#ifdef IPFILTER_LOG
/*
* iplread/ipllog
* both of these must operate with at least splnet() lest they be
* called during packet processing and cause an inconsistancy to appear in
* the filter lists.
*/
/*ARGSUSED*/
int iplread(dev, uio, cp)
dev_t dev;
register struct uio *uio;
cred_t *cp;
{
ipf_stack_t *ifs;
int ret;
/*
* As we're calling ipf_find_stack in user space, from a given zone
* to find the stack pointer for this zone, there is no need to have
* a hold/refence count here.
*/
ifs = ipf_find_stack(crgetzoneid(cp));
ASSERT(ifs != NULL);
# ifdef IPFDEBUG
cmn_err(CE_CONT, "iplread(%x,%x,%x)\n", dev, uio, cp);
# endif
if (ifs->ifs_fr_running < 1) {
return EIO;
}
# ifdef IPFILTER_SYNC
if (getminor(dev) == IPL_LOGSYNC) {
return ipfsync_read(uio);
}
# endif
ret = ipflog_read(getminor(dev), uio, ifs);
return ret;
}
#endif /* IPFILTER_LOG */
/*
* iplread/ipllog
* both of these must operate with at least splnet() lest they be
* called during packet processing and cause an inconsistancy to appear in
* the filter lists.
*/
int iplwrite(dev, uio, cp)
dev_t dev;
register struct uio *uio;
cred_t *cp;
{
ipf_stack_t *ifs;
/*
* As we're calling ipf_find_stack in user space, from a given zone
* to find the stack pointer for this zone, there is no need to have
* a hold/refence count here.
*/
ifs = ipf_find_stack(crgetzoneid(cp));
ASSERT(ifs != NULL);
#ifdef IPFDEBUG
cmn_err(CE_CONT, "iplwrite(%x,%x,%x)\n", dev, uio, cp);
#endif
if (ifs->ifs_fr_running < 1) {
return EIO;
}
#ifdef IPFILTER_SYNC
if (getminor(dev) == IPL_LOGSYNC)
return ipfsync_write(uio);
#endif /* IPFILTER_SYNC */
dev = dev; /* LINT */
uio = uio; /* LINT */
cp = cp; /* LINT */
return ENXIO;
}
/*
* fr_send_reset - this could conceivably be a call to tcp_respond(), but that
* requires a large amount of setting up and isn't any more efficient.
*/
int fr_send_reset(fin)
fr_info_t *fin;
{
tcphdr_t *tcp, *tcp2;
int tlen, hlen;
mblk_t *m;
#ifdef USE_INET6
ip6_t *ip6;
#endif
ip_t *ip;
tcp = fin->fin_dp;
if (tcp->th_flags & TH_RST)
return -1;
#ifndef IPFILTER_CKSUM
if (fr_checkl4sum(fin) == -1)
return -1;
#endif
tlen = (tcp->th_flags & (TH_SYN|TH_FIN)) ? 1 : 0;
#ifdef USE_INET6
if (fin->fin_v == 6)
hlen = sizeof(ip6_t);
else
#endif
hlen = sizeof(ip_t);
hlen += sizeof(*tcp2);
if ((m = (mblk_t *)allocb(hlen + 64, BPRI_HI)) == NULL)
return -1;
m->b_rptr += 64;
MTYPE(m) = M_DATA;