diff options
Diffstat (limited to 'sys/netinet/ip_fw2.c')
| -rw-r--r-- | sys/netinet/ip_fw2.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sys/netinet/ip_fw2.c b/sys/netinet/ip_fw2.c index 19799bc..a532a6d 100644 --- a/sys/netinet/ip_fw2.c +++ b/sys/netinet/ip_fw2.c @@ -82,12 +82,16 @@ #include <machine/in_cksum.h> /* XXX for in_cksum */ /* - * XXX This one should go in sys/mbuf.h. It is used to avoid that - * a firewall-generated packet loops forever through the firewall. + * This is used to avoid that a firewall-generated packet + * loops forever through the firewall. Note that it must + * be a flag that is unused by other protocols that might + * be called from ip_output (e.g. IPsec) and it must be + * listed in M_COPYFLAGS in mbuf.h so that if the mbuf chain + * is altered on the way through ip_output it is not lost. + * It might be better to add an m_tag since the this happens + * infrequently. */ -#ifndef M_SKIP_FIREWALL -#define M_SKIP_FIREWALL 0x4000 -#endif +#define M_SKIP_FIREWALL M_PROTO6 /* * set_disable contains one bit per set value (0..31). |
