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Set the current vnet inside the ioctl handler for ipfilter.

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Without this fix, the vnet was NULL and would crash.
This fix is similar to what was done inside the ioctl handler for PF.

Tested by:
   (1) Boot a kernel with "options VIMAGE" enabled
   (2) Type:

   echo "map lo0 from 10.0.0.0/24 to ! 10.0.0.0/24 -> 127.0.0.1/32" > /etc/ipnat.rules ; service ipnat onerestart

PR: 176992
Differential Revision: https://reviews.freebsd.org/D1191
Reviewed by: cy
This commit is contained in:
Craig Rodrigues 2014-11-20 08:11:54 +00:00
parent eaed5fd136
commit f687a7c2dd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=274744
1 changed files with 11 additions and 0 deletions
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11
sys/contrib/ipfilter/netinet/ip_fil_freebsd.c
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@ -33,6 +33,9 @@ static const char rcsid[] = "@(#)$Id$";
#include <sys/time.h>
#include <sys/systm.h>
# include <sys/dirent.h>
#if defined(__FreeBSD_version) && (__FreeBSD_version >= 800000)
#include <sys/jail.h>
#endif
# include <sys/mbuf.h>
# include <sys/sockopt.h>
#if !defined(__hpux)
@ -52,6 +55,12 @@ static const char rcsid[] = "@(#)$Id$";
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#if defined(__FreeBSD_version) && (__FreeBSD_version >= 800000)
#include <net/vnet.h>
#else
#define CURVNET_SET(arg)
#define CURVNET_RESTORE()
#endif
#if defined(__osf__)
# include <netinet/tcp_timer.h>
#endif
@ -323,7 +332,9 @@ ipfioctl(dev, cmd, data, mode
SPL_NET(s);
CURVNET_SET(TD_TO_VNET(p));
error = ipf_ioctlswitch(&ipfmain, unit, data, cmd, mode, p->p_uid, p);
CURVNET_RESTORE();
if (error != -1) {
SPL_X(s);
return error;