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Convert IPFW_DEFAULT_TO_ACCEPT into a loader tunable

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'net.inet.ip.fw.default_to_accept'.  The current value can also be queried
via a read-only sysctl of the same name.

Requested by:	plosher
MFC after:	1 week
This commit is contained in:
John Baldwin 2009-05-09 05:07:36 +00:00
parent 8569258bf8
commit 5f17ebf94d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=191932
1 changed files with 9 additions and 5 deletions
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14
sys/netinet/ip_fw2.c
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@ -127,6 +127,11 @@ static struct callout ipfw_timeout;
static int verbose_limit;
#endif
#ifdef IPFIREWALL_DEFAULT_TO_ACCEPT
static int default_to_accept = 1;
#else
static int default_to_accept;
#endif
static uma_zone_t ipfw_dyn_rule_zone;
/*
@ -190,6 +195,9 @@ SYSCTL_UINT(_net_inet_ip_fw, OID_AUTO, default_rule, CTLFLAG_RD,
NULL, IPFW_DEFAULT_RULE, "The default/max possible rule number.");
SYSCTL_UINT(_net_inet_ip_fw, OID_AUTO, tables_max, CTLFLAG_RD,
NULL, IPFW_TABLES_MAX, "The maximum number of tables.");
SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, default_to_accept, CTLFLAG_RDTUN,
&default_to_accept, 0, "Make the default rule accept all packets.");
TUNABLE_INT("net.inet.ip.fw.default_to_accept", &default_to_accept);
#endif /* SYSCTL_NODE */
/*
@ -4636,11 +4644,7 @@ ipfw_init(void)
default_rule.set = RESVD_SET;
default_rule.cmd[0].len = 1;
default_rule.cmd[0].opcode =
#ifdef IPFIREWALL_DEFAULT_TO_ACCEPT
1 ? O_ACCEPT :
#endif
O_DENY;
default_rule.cmd[0].opcode = default_to_accept ? O_ACCEPT : O_DENY;
error = add_rule(&V_layer3_chain, &default_rule);
if (error != 0) {