More cleanup in preparation of ipfw relocation (no actual code change):

+ move ipfw and dummynet hooks declarations to raw_ip.c (definitions
  in ip_var.h) same as for most other global variables.
  This removes some dependencies from ip_input.c;

+ remove the IPFW_LOADED macro, just test ip_fw_chk_ptr directly;

+ remove the DUMMYNET_LOADED macro, just test ip_dn_io_ptr directly;

+ move ip_dn_ruledel_ptr to ip_fw2.c which is the only file using it;

To be merged together with rev 193497

MFC after:	5 days

1 files changed, 7 insertions, 1 deletions

diff --git a/sys/netinet/ip_fw2.c b/sys/netinet/ip_fw2.c
index 965cddb..65a2e26 100644
--- a/sys/netinet/ip_fw2.c
+++ b/sys/netinet/ip_fw2.c
@@ -3603,6 +3603,12 @@ remove_rule(struct ip_fw_chain *chain, struct ip_fw *rule,
 	return n;
 }
 
+/*
+ * Hook for cleaning up dummynet when an ipfw rule is deleted.
+ * Set/cleared when dummynet module is loaded/unloaded.
+ */
+void   (*ip_dn_ruledel_ptr)(void *) = NULL;
+
 /**
  * Reclaim storage associated with a list of rules.  This is
  * typically the list created using remove_rule.
@@ -3614,7 +3620,7 @@ reap_rules(struct ip_fw *head)
 
 	while ((rule = head) != NULL) {
 		head = head->next;
-		if (DUMMYNET_LOADED)
+		if (ip_dn_ruledel_ptr)
 			ip_dn_ruledel_ptr(rule);
 		free(rule, M_IPFW);
 	}