Author: sam
Date: Mon May 18 17:18:40 2009
New Revision: 192313
URL: http://svn.freebsd.org/changeset/base/192313
Log:
add bpf_track eventhandler for monitoring bpf taps attached/detached
Reviewed by: csjp
Modified:
head/sys/net/bpf.c
head/sys/sys/eventhandler.h
Modified: head/sys/net/bpf.c
==============================================================================
--- head/sys/net/bpf.c Mon May 18 17:14:48 2009 (r192312)
+++ head/sys/net/bpf.c Mon May 18 17:18:40 2009 (r192313)
@@ -534,6 +534,8 @@ bpf_attachd(struct bpf_d *d, struct bpf_
bpf_bpfd_cnt++;
BPFIF_UNLOCK(bp);
+
+ EVENTHANDLER_INVOKE(bpf_track, bp->bif_ifp, 1);
}
/*
@@ -561,6 +563,8 @@ bpf_detachd(struct bpf_d *d)
BPFD_UNLOCK(d);
BPFIF_UNLOCK(bp);
+ EVENTHANDLER_INVOKE(bpf_track, ifp, 0);
+
/*
* Check if this descriptor had requested promiscuous mode.
* If so, turn it off.
Modified: head/sys/sys/eventhandler.h
==============================================================================
--- head/sys/sys/eventhandler.h Mon May 18 17:14:48 2009 (r192312)
+++ head/sys/sys/eventhandler.h Mon May 18 17:18:40 2009 (r192313)
@@ -182,6 +182,11 @@ typedef void (*vlan_unconfig_fn)(void *,
EVENTHANDLER_DECLARE(vlan_config, vlan_config_fn);
EVENTHANDLER_DECLARE(vlan_unconfig, vlan_unconfig_fn);
+/* BPF attach/detach events */
+struct ifnet;
+typedef void (*bpf_track_fn)(void *, struct ifnet *, int /* 1 =>'s attach */);
+EVENTHANDLER_DECLARE(bpf_track, bpf_track_fn);
+
/*
* Process events
* process_fork and exit handlers are called without Giant.
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