Initial commit for Tizen ExtrasHEADsubmit/2.0alpha/20130201.230646accepted/2.0alpha/20130201.2258362.0alpha

13 files changed, 1638 insertions, 0 deletions

diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..3912109
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+These restrictions translate to certain responsibilities for you if you
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+
+  For example, if you distribute copies of such a program, whether
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+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
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+want its recipients to know that what they have is not the original, so
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+  Finally, any free program is threatened constantly by software
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+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
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+language.  (Hereinafter, translation is included without limitation in
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+
+Activities other than copying, distribution and modification are not
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+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
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+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
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+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
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+above, provided that you also meet all of these conditions:
+
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+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
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+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
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+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
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+distribute the same sections as part of a whole which is a work based
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+
+Thus, it is not the intent of this section to claim rights or contest
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+In addition, mere aggregation of another work not based on the Program
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+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
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+
+  4. You may not copy, modify, sublicense, or distribute the Program
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+otherwise to copy, modify, sublicense or distribute the Program is
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+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
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+
+  6. Each time you redistribute the Program (or any work based on the
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+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
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+license would not permit royalty-free redistribution of the Program by
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+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
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+
+It is not the purpose of this section to induce you to infringe any
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+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
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+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
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+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
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+Software Foundation, write to the Free Software Foundation; we sometimes
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+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
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+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..56d04ae
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,47 @@
+REL_VERSION:=1.4
+ROOT_DIR=$(shell pwd)
+
+all: release srpm rpm
+
+rel-upload: release
+	scp $(ROOT_DIR)/dropwatch-$(REL_VERSION).tbz2 fedorahosted.org:dropwatch
+
+release: tarball 
+
+tarball:
+	mkdir -p stage 
+	ln -s $(ROOT_DIR) stage/dropwatch-$(REL_VERSION)
+	tar jchf $(ROOT_DIR)/stage/dropwatch-$(REL_VERSION).tbz2 --exclude \.git --exclude stage -C stage dropwatch-$(REL_VERSION)/
+	mv $(ROOT_DIR)/stage/*.tbz2 $(ROOT_DIR)
+	rm -rf stage
+
+srpm: tarball
+	$(shell sed -e"s/MAKEFILE_VERSION/$(REL_VERSION)/" ./spec/dropwatch.spec > ./dropwatch.spec)
+	rpmbuild --define "_sourcedir $(ROOT_DIR)" --define "_srcrpmdir $(ROOT_DIR)" -bs $(ROOT_DIR)/dropwatch.spec
+
+rpm: srpm
+	mkdir -p BUILD
+	mkdir -p RPMS
+	rpmbuild --define "_sourcedir $(ROOT_DIR)" --define "_builddir $(ROOT_DIR)/BUILD" --define "_rpmdir $(ROOT_DIR)/RPMS" -bb $(ROOT_DIR)/dropwatch.spec
+	rm -rf BUILD
+
+clean:
+	rm -f $(ROOT_DIR)/dropwatch*.tbz2 $(ROOT_DIR)/*.rpm $(ROOT_DIR)/*.spec
+	rm -rf BUILD
+	rm -rf RPMS
+	rm -rf stage
+	make -C src clean 
+
+build:
+	make -C src all 
+
+build_clean:
+	make -c src clean
+
+tag:
+	git tag -s -u $(GIT_AUTHOR_EMAIL) -m"Tag V$(REL_VERSION)" V$(REL_VERSION)
+
+git-upload:
+	git push --all ssh://git.fedorahosted.org/git/dropwatch.git
+	git push --tags ssh://git.fedorahosted.org/git/dropwatch.git
+
diff --git a/README b/README
new file mode 100644
index 0000000..40aa1c1
--- /dev/null
+++ b/README
@@ -0,0 +1,37 @@
+Thanks for Downloading dropwatch!
+
+What is Dropwatch?
+Dropwatch is a project I started in an effort to improve the ability for
+developers and system administrator to diagnose problems in the Linux Networking
+stack, specifically in our ability to diagnose where packets are getting
+dropped.  From my probing, I've come to the conclusion that there are four main
+shortcommings in our current environment:
+
+1) Consolidation, or lack thereof.  Currently, if you would like to check on the
+status of dropped packets in the kernel, you need to check at least 3 places,
+and possibly more: The /proc/net/snmp file, the netstat utility, the tc utility,
+and ethool.  This project aims to consolidate several of those checks into one
+tool, making it easier for a sysadmin or developer to detect lost packets
+
+2) Clarity of information.  Dropped packets are not obvious.  a sysadmin needs
+to be intimately familiar with each of the above tools to understand which
+events or statistics correlate to a dropped packet and which do not.  While that
+is often self evident, it is also often not.  Dropwatch aims to improve that
+clarity
+
+3) Ambiguity.  Even when a dropped packet is detected, the causes for those
+dropped packets are not always clear.  Does a UDPInError mean the application
+receive buffer was full, or does it mean its checksum was bad?  Dropwatch
+attempts to disambiguate the causes for dropped packets.
+
+4) Performance.  Utilties can be written to aggregate the data in the various
+other utilities to solve some of these problems, but such solutions require
+periodic polling of several interfaces, which is far from optimal, especially
+when lost packets are rare.  This solution improves on the performance aspect by
+implementing a kernel feature which allows asyncronous notification of dropped
+packets when they happen.
+
+Questions
+Feel free to email me directly at nhorman@redhat.com with question, or if you
+find a bug, open a trac ticket at https://fedorahosted.org/dropwatch/
+
diff --git a/doc/dropwatch.1 b/doc/dropwatch.1
new file mode 100644
index 0000000..d9e754e
--- /dev/null
+++ b/doc/dropwatch.1
@@ -0,0 +1,36 @@
+.PU
+.TH dropwatch "1" "Mar 2009" "Neil Horman"
+.SH NAME
+dropwatch - kernel dropped packet monitoring utility 
+.SH SYNOPSIS
+.B dropwatch [-l <method> | list]
+.SH DESCRIPTION
+.I dropwatch 
+dropwatch is an interactive utility for monitoring and recording packets that
+are dropped by the kernel
+.SH OPTIONS  
+.TP
+.B -l <method> | list
+Select the translation method to use when a drop alert arrives.  By default the
+raw instruction pointer of a drop location is output, but by the use of the -l
+option, we can assign a translation method so that the instruction pointer can
+be translated into function names.  Currently supported lookup methods are:
+.PP
+.B kas - use /proc/kallsyms to lookup instruction pointers to function mappings
+.SH INTERACTIVE COMMANDS
+.TP
+.B start 
+Tells the kernel to start reporting dropped packets
+.TP
+.B stop 
+Tells the kernel to discontinue reporting dropped packets
+.TP
+.B exit 
+Exits the dropmonitor program
+.TP
+.B help 
+Displays summary of all commands
+.TP
+.B set alertlimit <value>
+Sets a triggerpoint to stop monitoring for dropped packets after <value> alerts
+have been received
diff --git a/packaging/dropwatch.spec b/packaging/dropwatch.spec
new file mode 100644
index 0000000..7ac0f51
--- /dev/null
+++ b/packaging/dropwatch.spec
@@ -0,0 +1,46 @@
+Summary: Kernel dropped packet monitor 
+Name: dropwatch 
+Version: 1.4 
+Release: 1 
+Source0: https://fedorahosted.org/releases/d/r/dropwatch/dropwatch-%{version}.tbz2
+URL: http://fedorahosted.org/dropwatch
+License: GPLv2+ 
+Group: Applications/System 
+BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root
+BuildRequires: kernel-adaptation-intel-automotive-devel
+BuildRequires: libnl2-devel
+BuildRequires: readline-devel
+BuildRequires: binutils-devel
+BuildRequires: ncurses-devel
+Requires: libnl2
+Requires: readline
+
+%description
+dropwatch is an utility to interface to the kernel to monitor for dropped
+network packets.
+
+%prep
+%setup -q
+
+%build
+cd src
+export CFLAGS=$RPM_OPT_FLAGS
+make 
+
+%install
+rm -rf $RPM_BUILD_ROOT
+mkdir -p $RPM_BUILD_ROOT%{_bindir}
+mkdir -p $RPM_BUILD_ROOT%{_mandir}/man1
+install -m0755 src/dropwatch $RPM_BUILD_ROOT%{_bindir}
+install -m0644 doc/dropwatch.1 $RPM_BUILD_ROOT%{_mandir}/man1
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+
+%files
+%defattr(-,root,root,-)
+%{_bindir}/*
+%{_mandir}/man1/*
+%doc README
+%doc COPYING
diff --git a/spec/dropwatch.spec b/spec/dropwatch.spec
new file mode 100644
index 0000000..02d48aa
--- /dev/null
+++ b/spec/dropwatch.spec
@@ -0,0 +1,43 @@
+%define uversion MAKEFILE_VERSION
+Summary: Kernel dropped packet monitor 
+Name: dropwatch 
+Version: %{uversion} 
+Release: 0%{?dist} 
+Source0: https://fedorahosted.org/releases/d/r/dropwatch/dropwatch-%{uversion}.tbz2
+URL: http://fedorahosted.org/dropwatch
+License: GPLv2+ 
+Group: Applications/System 
+BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root
+BuildRequires: kernel-devel, libnl-devel, readline-devel
+BuildRequires: binutils-devel, binutils-static pkgconfig
+Requires: libnl, readline
+
+%description
+dropwatch is an utility to interface to the kernel to monitor for dropped
+network packets.
+
+%prep
+%setup -q
+
+%build
+cd src
+export CFLAGS=$RPM_OPT_FLAGS
+make 
+
+%install
+rm -rf $RPM_BUILD_ROOT
+mkdir -p $RPM_BUILD_ROOT%{_bindir}
+mkdir -p $RPM_BUILD_ROOT%{_mandir}/man1
+install -m0755 src/dropwatch $RPM_BUILD_ROOT%{_bindir}
+install -m0644 doc/dropwatch.1 $RPM_BUILD_ROOT%{_mandir}/man1
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+
+%files
+%defattr(-,root,root,-)
+%{_bindir}/*
+%{_mandir}/man1/*
+%doc README
+%doc COPYING
diff --git a/src/Makefile b/src/Makefile
new file mode 100644
index 0000000..d131f90
--- /dev/null
+++ b/src/Makefile
@@ -0,0 +1,16 @@
+all: dropwatch
+CFLAGS += -c -g -D_GNU_SOURCE -Wall -Werror
+CFLAGS += `pkg-config --cflags libnl-2.0`
+LDFLAGS += -lbfd -lreadline -ltermcap
+LDFLAGS += `pkg-config --libs libnl-2.0`
+OBJFILES := main.o lookup.o\
+	 lookup_bfd.o lookup_kas.o
+
+dropwatch: $(OBJFILES) 
+	gcc -g -o dropwatch $(OBJFILES) $(LDFLAGS) 
+
+%.o: %.c
+	gcc $(CFLAGS) $<
+clean:
+	rm -f dropwatch *.o
+
diff --git a/src/lookup.c b/src/lookup.c
new file mode 100644
index 0000000..ba54991
--- /dev/null
+++ b/src/lookup.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2009, Neil Horman <nhorman@redhat.com>
+ * 
+ * This program file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program in a file named COPYING; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ */
+
+/*
+ * This is a translator.  given an input address, this will convert it into a
+ * function and offset.  Unless overridden, it will automatically determine
+ * tranlations using the following methods, in order of priority:
+ * 1) /usr/lib/debug/<kernel version> using libbfd
+ * 2) /proc/kallsyms
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/utsname.h>
+#include <bfd.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "lookup.h"
+
+extern struct lookup_methods bfd_methods;
+extern struct lookup_methods kallsym_methods;
+
+static int lookup_null_init(void)
+{
+	printf("Initalizing null lookup method\n");
+	return 0;
+}
+
+static int lookup_null_sym(void *pc, struct loc_result *location)
+{
+	/*
+	 * In the null method, every lookup fails
+	 */
+	return 1;
+}
+
+static struct lookup_methods null_methods = {
+	lookup_null_init,
+        lookup_null_sym,
+};
+
+static struct lookup_methods *methods = NULL;
+
+int init_lookup(lookup_init_method_t method)
+{
+	int rc;
+	switch (method) {
+	case METHOD_NULL:
+		/*
+ 		 * Don't actuall do any lookups,
+ 		 * just pretend everything is
+ 		 * not found
+ 		 */
+		methods = &null_methods;
+		break;
+	case METHOD_AUTO:
+		methods = &bfd_methods;
+		if (methods->lookup_init() == 0)
+			return 0;
+		methods = &kallsym_methods;
+		if (methods->lookup_init() == 0)
+			return 0;
+		methods = NULL;
+		return -1;
+	case METHOD_DEBUGINFO:
+		methods = &bfd_methods;
+		break;
+	case METHOD_KALLSYMS:
+		methods = &kallsym_methods;
+		break;
+	}
+
+	rc = methods->lookup_init();
+	if (rc < 0)
+		methods = NULL;
+	return rc;
+}
+
+int lookup_symbol(void *pc, struct loc_result *loc)
+{
+	if (loc == NULL)
+		return 1;
+	return methods->get_symbol(pc, loc);
+}
diff --git a/src/lookup.h b/src/lookup.h
new file mode 100644
index 0000000..e6568d8
--- /dev/null
+++ b/src/lookup.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2009, Neil Horman <nhorman@redhat.com>
+ * 
+ * This program file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program in a file named COPYING; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ */
+
+/*
+ * This is a translator.  given an input address, this will convert it into a
+ * function and offset.  Unless overridden, it will automatically determine
+ * tranlations using the following methods, in order of priority:
+ * 1) /usr/lib/debug/<kernel version> using libbfd
+ * 2) /proc/kallsyms
+ */
+
+#include <stdlib.h>
+#include <asm/types.h>
+
+
+/*
+ * Initalization routine
+ * INPUTS:
+ *   method - enum describing how to do translation
+ *          * METHOD_NULL : Just print pc values, not symbols
+ *          * METHOD_AUTO : automatic search for best method
+ *          * METHOD_DEBUGINFO : use debuginfo package
+ *          * METHOD_KALLSYMS : use /proc/kallsyms
+ *   returns:
+ *          * 0   : initalization succeded
+ *          * < 0 : initalization failed
+ */
+typedef enum {
+	METHOD_NULL = 0,
+	METHOD_AUTO,
+	METHOD_DEBUGINFO,
+	METHOD_KALLSYMS
+} lookup_init_method_t;
+
+struct loc_result {
+	const char *symbol;
+	__u64 offset;
+};
+
+int init_lookup(lookup_init_method_t method);
+int lookup_symbol(void *pc, struct loc_result *location);
+
+struct lookup_methods {
+        int (*lookup_init)(void);
+	int(*get_symbol)(void *pc, struct loc_result *location);
+};
+
+
diff --git a/src/lookup_bfd.c b/src/lookup_bfd.c
new file mode 100644
index 0000000..cc7010b
--- /dev/null
+++ b/src/lookup_bfd.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2009, Neil Horman <nhorman@redhat.com>
+ * 
+ * This program file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program in a file named COPYING; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ */
+
+/*
+ * This is a translator.  given an input address, this will convert it into a
+ * symbollic name using the bfd library
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/utsname.h>
+#include <bfd.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "lookup.h"
+
+
+static int lookup_bfd_init(void)
+{
+	struct utsname uts;
+	struct stat sb;
+	char *dbibuf;
+
+	/*
+	*Start by determining if we have the required debuginfo package
+	*here
+	*/
+	if(uname(&uts)<0)
+		return-1;
+
+	dbibuf = malloc(strlen("/usr/lib/debug/lib/modules") + strlen(uts.release) + 1);
+	sprintf(dbibuf,"/usr/lib/debug/lib/modules/%s", uts.release);
+	if (stat(dbibuf,&sb) < 0) {
+		free(dbibuf);
+		goto out_fail;
+	}
+
+	free(dbibuf);
+
+
+	bfd_init();
+	return 0;
+
+out_fail:
+	return-1;
+}
+
+static int lookup_bfd_sym(void *pc, struct loc_result *location)
+{
+	return 1;
+}
+
+struct lookup_methods bfd_methods = {
+	lookup_bfd_init,
+	lookup_bfd_sym,
+};
diff --git a/src/lookup_kas.c b/src/lookup_kas.c
new file mode 100644
index 0000000..09fad98
--- /dev/null
+++ b/src/lookup_kas.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2009, Neil Horman <nhorman@redhat.com>
+ * 
+ * This program file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program in a file named COPYING; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ */
+
+/*
+ * This is a translator.  given an input address, this will convert it into a
+ * symbolic name using /proc/kallsyms
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/utsname.h>
+#include <bfd.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/queue.h>
+
+#include "lookup.h"
+
+struct symbol_entry {
+	char *sym_name;
+	__u64 start;
+	__u64 end;
+	LIST_ENTRY(symbol_entry) list;
+};
+
+LIST_HEAD(sym_list, symbol_entry);
+
+/*
+ * This is our cache of symbols that we've previously looked up
+ */ 
+static struct sym_list sym_list_head = {NULL}; 
+
+
+static int lookup_kas_cache( __u64 pc, struct loc_result *location)
+{
+	struct symbol_entry *sym;
+
+	LIST_FOREACH(sym, &sym_list_head, list) {
+		if ((pc >= sym->start) &&
+		    (pc <= sym->end)) {
+			location->symbol = sym->sym_name;
+			location->offset = (pc - sym->start);
+			return 0;
+		}
+	}
+
+	return 1;
+}
+
+static void kas_add_cache(__u64 start, __u64 end, char *name)
+{
+	struct symbol_entry *sym = NULL;
+
+	sym = malloc(sizeof(struct symbol_entry));
+	if (!sym)
+		return;
+
+	sym->start = start;
+	sym->end = end;
+	sym->sym_name = name;
+
+	LIST_INSERT_HEAD(&sym_list_head, sym, list);
+	return;
+}
+
+static int lookup_kas_proc(__u64 pc, struct loc_result *location)
+{
+	FILE *pf;
+	__u64 ppc;
+	__u64 uppc, ulpc, uipc;
+	char *name, *last_name;
+
+	pf = fopen("/proc/kallsyms", "r");
+
+	if (!pf)
+		return 1;
+
+	last_name = NULL;
+	uipc = pc;
+	ulpc = 0;
+	while (!feof(pf)) {
+		/* 
+		 * Each line of /proc/kallsyms is formatteded as:
+		 *  - "%pK %c %s\n" (for kernel internal symbols), or
+		 *  - "%pK %c %s\t[%s]\n" (for module-provided symbols)
+		 */
+		if (fscanf(pf, "%llx %*s %as [ %*[^]] ]", &ppc, &name) < 0) {
+			perror("Error Scanning File: ");
+			break;
+		}
+
+		uppc = (__u64)ppc;
+		if ((uipc >= ulpc) &&
+		    (uipc < uppc)) {
+			/*
+ 			 * The last symbol we looked at
+ 			 * was a hit, record and return it
+ 			 * Note that we don't free last_name
+ 			 * here, because the cache is using it
+ 			 */
+			kas_add_cache(ulpc, uppc-1, last_name);
+			fclose(pf);
+			free(name);
+			return lookup_kas_cache(pc, location);
+		} 
+
+		/*
+ 		 * Advance all our state holders
+ 		 */
+		free(last_name);
+		last_name = name;
+		ulpc = uppc;
+	}
+
+	fclose(pf);
+	return 1;
+}
+
+static int lookup_kas_init(void)
+{
+	printf("Initalizing kallsyms db\n");
+	
+	return 0;
+}
+
+
+static int lookup_kas_sym(void *pc, struct loc_result *location)
+{
+	__u64 pcv;
+
+	memset(&pcv, 0, sizeof(__u64));
+
+	memcpy(&pcv, &pc, sizeof(void *));
+
+	if (!lookup_kas_cache(pcv, location))
+		return 0;
+
+	return lookup_kas_proc(pcv, location);
+}
+
+struct lookup_methods kallsym_methods = {
+	lookup_kas_init,
+	lookup_kas_sym,
+};
+
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..caccaf1
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,613 @@
+/*
+ * Copyright (C) 2009, Neil Horman <nhorman@redhat.com>
+ * 
+ * This program file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program in a file named COPYING; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ */
+
+/*
+ * Opens our netlink socket.  Returns the socket descriptor or < 0 on error
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdint.h>
+#include <getopt.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/socket.h>
+#include <sys/queue.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+#include <asm/types.h>
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/ctrl.h>
+
+#include "net_dropmon.h"
+#include "lookup.h"
+
+/*
+ * This is just in place until the kernel changes get comitted
+ */
+#ifndef NETLINK_DRPMON
+#define NETLINK_DRPMON 20
+#endif
+
+struct netlink_message {
+	void *msg;
+	struct nl_msg *nlbuf;
+	int refcnt;
+	LIST_ENTRY(netlink_message) ack_list_element;
+	int seq;
+	void (*ack_cb)(struct netlink_message *amsg, struct netlink_message *msg, int err);
+};
+
+LIST_HEAD(ack_list, netlink_message);
+
+struct ack_list ack_list_head = {NULL};
+
+unsigned long alimit = 0;
+unsigned long acount = 0;
+
+void handle_dm_alert_msg(struct netlink_message *msg, int err);
+void handle_dm_config_msg(struct netlink_message *msg, int err);
+void handle_dm_start_msg(struct netlink_message *amsg, struct netlink_message *msg, int err);
+void handle_dm_stop_msg(struct netlink_message *amsg, struct netlink_message *msg, int err);
+int disable_drop_monitor();
+
+
+static void(*type_cb[_NET_DM_CMD_MAX])(struct netlink_message *, int err) = {
+	NULL,
+	handle_dm_alert_msg,
+	handle_dm_config_msg,
+	NULL,
+	NULL
+};
+
+static struct nl_sock *nsd;
+static int nsf;
+
+enum {
+	STATE_IDLE = 0,
+	STATE_ACTIVATING,
+	STATE_RECEIVING,
+	STATE_RQST_DEACTIVATE,
+	STATE_RQST_ACTIVATE,
+	STATE_DEACTIVATING,
+	STATE_FAILED,
+	STATE_EXIT,
+};
+
+static int state = STATE_IDLE;
+
+void sigint_handler(int signum)
+{
+	if ((state == STATE_RECEIVING) ||
+	   (state == STATE_RQST_DEACTIVATE)) {
+		disable_drop_monitor();
+		state = STATE_DEACTIVATING;
+	}
+	else
+		printf("Got a sigint while not receiving\n");
+	return;	
+}
+
+struct nl_sock *setup_netlink_socket()
+{
+	struct nl_sock *sd;
+	int family;
+
+	
+	sd = nl_socket_alloc();
+
+	genl_connect(sd);
+
+	family = genl_ctrl_resolve(sd, "NET_DM");
+
+	if (family < 0) {
+		printf("Unable to find NET_DM family, dropwatch can't work\n");
+		goto out_close;
+	}
+
+	nsf = family;
+
+	nl_close(sd);
+	nl_socket_free(sd);
+
+	sd = nl_socket_alloc();
+	nl_join_groups(sd, NET_DM_GRP_ALERT);
+
+	nl_connect(sd, NETLINK_GENERIC);
+
+	return sd;
+
+out_close:
+	nl_close(sd);
+	nl_socket_free(sd);
+	return NULL;
+
+}
+
+struct netlink_message *alloc_netlink_msg(uint32_t type, uint16_t flags, size_t size)
+{
+	struct netlink_message *msg;
+	static uint32_t seq = 0;
+
+	msg = (struct netlink_message *)malloc(sizeof(struct netlink_message));
+
+	if (!msg)
+		return NULL;
+
+	msg->refcnt = 1;
+	msg->nlbuf = nlmsg_alloc(); 
+	msg->msg = genlmsg_put(msg->nlbuf, 0, seq, nsf, size, flags, type, 1);
+
+	msg->ack_cb = NULL;
+	msg->seq = seq++;
+
+	return msg;
+}
+
+void set_ack_cb(struct netlink_message *msg,
+			void (*cb)(struct netlink_message *, struct netlink_message *, int))
+{
+
+	if (msg->ack_cb)
+		return;
+
+	msg->ack_cb = cb;
+	msg->refcnt++;
+	LIST_INSERT_HEAD(&ack_list_head, msg, ack_list_element);
+}
+
+		
+struct netlink_message *wrap_netlink_msg(struct nlmsghdr *buf)
+{
+	struct netlink_message *msg;
+
+	msg = (struct netlink_message *)malloc(sizeof(struct netlink_message));
+	if (msg) {
+		msg->refcnt = 1;
+		msg->msg = buf;
+		msg->nlbuf = NULL;
+	}
+
+	return msg;
+}
+
+int free_netlink_msg(struct netlink_message *msg)
+{
+	int refcnt;
+
+	msg->refcnt--;
+
+	refcnt = msg->refcnt;
+
+	if (!refcnt) {
+		if (msg->nlbuf)
+			nlmsg_free(msg->nlbuf);
+		else
+			free(msg->msg);
+		free(msg);
+	}
+
+	return refcnt;
+}
+
+int send_netlink_message(struct netlink_message *msg)
+{
+	return nl_send(nsd, msg->nlbuf);
+}
+
+struct netlink_message *recv_netlink_message(int *err)
+{
+	static unsigned char *buf;
+	struct netlink_message *msg;
+	struct genlmsghdr *glm;
+	struct sockaddr_nl nla;
+	int type;
+	int rc;
+
+	*err = 0;
+
+	do {
+		rc = nl_recv(nsd, &nla, &buf, NULL);
+		if (rc < 0) {	
+			switch (errno) {
+			case EINTR:
+				/*
+				 * Take a pass throught the state loop
+				 */
+				return NULL;
+				break;
+			default:
+				perror("Receive operation failed:");
+				return NULL;
+				break;
+			}
+		}
+	} while (rc == 0);
+
+	msg = wrap_netlink_msg((struct nlmsghdr *)buf);
+
+	type = ((struct nlmsghdr *)msg->msg)->nlmsg_type;
+
+	/*
+	 * Note the NLMSG_ERROR is overloaded
+	 * Its also used to deliver ACKs
+	 */
+	if (type == NLMSG_ERROR) {
+		struct netlink_message *am;
+		struct nlmsgerr *errm = nlmsg_data(msg->msg);
+		LIST_FOREACH(am, &ack_list_head, ack_list_element) {
+			if (am->seq == errm->msg.nlmsg_seq)
+				break;
+		}
+	
+		if (am) {	
+			LIST_REMOVE(am, ack_list_element);
+			am->ack_cb(msg, am, errm->error);
+			free_netlink_msg(am);
+		} else {
+			printf("Got an unexpected ack for sequence %d\n", errm->msg.nlmsg_seq);
+		}
+
+		free_netlink_msg(msg);
+		return NULL;
+	}
+
+	glm = nlmsg_data(msg->msg);
+	type = glm->cmd;
+	
+	if ((type > NET_DM_CMD_MAX) ||
+	    (type <= NET_DM_CMD_UNSPEC)) {
+		printf("Received message of unknown type %d\n", 
+			type);
+		free_netlink_msg(msg);
+		return NULL;
+	}
+
+	return msg;	
+}
+
+void process_rx_message(void)
+{
+	struct netlink_message *msg;
+	int err;
+	int type;
+	sigset_t bs;
+
+	sigemptyset(&bs);
+	sigaddset(&bs, SIGINT);
+	sigprocmask(SIG_UNBLOCK, &bs, NULL);
+	msg = recv_netlink_message(&err);
+	sigprocmask(SIG_BLOCK, &bs, NULL);
+
+	if (msg) {
+		struct nlmsghdr *nlh = msg->msg;
+		struct genlmsghdr *glh = nlmsg_data(nlh);
+		type  = glh->cmd; 
+		type_cb[type](msg, err);
+	}
+	return;
+}
+
+
+
+/*
+ * These are the received message handlers
+ */
+void handle_dm_alert_msg(struct netlink_message *msg, int err)
+{
+	int i;
+	struct nlmsghdr *nlh = msg->msg;
+	struct genlmsghdr *glh = nlmsg_data(nlh);
+	struct loc_result res;
+	struct net_dm_alert_msg *alert = nla_data(genlmsg_data(glh));
+
+	if (state != STATE_RECEIVING)
+		goto out_free;
+
+
+
+	for (i=0; i < alert->entries; i++) {
+		void *location;
+		memcpy(&location, alert->points[i].pc, sizeof(void *));
+		if (lookup_symbol(location, &res))
+			printf ("%d drops at location %p\n", alert->points[i].count, location);
+		else
+			printf ("%d drops at %s+%llx (%p)\n",
+				alert->points[i].count, res.symbol, res.offset, location);
+		acount++;
+		if (alimit && (acount == alimit)) {
+			printf("Alert limit reached, deactivating!\n");
+			state = STATE_RQST_DEACTIVATE;
+		}
+	}	
+
+out_free:
+	free_netlink_msg(msg);
+}
+
+void handle_dm_config_msg(struct netlink_message *msg, int err)
+{
+	printf("Got a config message\n");
+}
+
+void handle_dm_start_msg(struct netlink_message *amsg, struct netlink_message *msg, int err)
+{
+	if (err != 0) {
+		char *erm = strerror(err*-1);
+		printf("Failed activation request, error: %s\n", erm);
+		state = STATE_FAILED;
+		goto out;
+	}
+	
+	if (state == STATE_ACTIVATING) {
+		struct sigaction act;
+		memset(&act, 0, sizeof(struct sigaction));
+		act.sa_handler = sigint_handler;
+		act.sa_flags = SA_RESETHAND;
+
+		printf("Kernel monitoring activated.\n");
+		printf("Issue Ctrl-C to stop monitoring\n");
+		sigaction(SIGINT, &act, NULL);
+
+		state = STATE_RECEIVING;
+	} else {
+		printf("Odd, the kernel told us that it activated and we didn't ask\n");
+		state = STATE_FAILED;
+	}
+out:
+	return;
+}
+
+void handle_dm_stop_msg(struct netlink_message *amsg, struct netlink_message *msg, int err)
+{
+	char *erm;
+
+	if ((err == 0) || (err == -EAGAIN)) {
+		printf("Got a stop message\n");
+		state = STATE_IDLE;
+	} else {
+		erm = strerror(err*-1);
+		printf("Stop request failed, error: %s\n", erm);
+	}
+
+}
+
+int enable_drop_monitor()
+{
+	struct netlink_message *msg;
+
+	msg = alloc_netlink_msg(NET_DM_CMD_START, NLM_F_REQUEST|NLM_F_ACK, 0);
+
+	set_ack_cb(msg, handle_dm_start_msg);
+	
+	return send_netlink_message(msg);
+}
+
+int disable_drop_monitor()
+{
+	struct netlink_message *msg;
+
+	msg = alloc_netlink_msg(NET_DM_CMD_STOP, NLM_F_REQUEST|NLM_F_ACK, 0);
+
+	set_ack_cb(msg, handle_dm_stop_msg);
+
+	return send_netlink_message(msg);
+}
+
+void display_help()
+{
+	printf("Command Syntax:\n");
+	printf("exit\t\t\t\t - Quit dropwatch\n");
+	printf("help\t\t\t\t - Display this message\n");
+	printf("set:\n");
+	printf("\talertlimit <number>\t - caputre only this many alert packets\n");
+	printf("start\t\t\t\t - start capture\n");
+	printf("stop\t\t\t\t - stop capture\n");
+}
+
+void enter_command_line_mode()
+{
+	char *input;
+
+	do {
+		input = readline("dropwatch> ");
+
+		if (input == NULL) {
+			/* Someone closed stdin on us */
+			printf("Terminating dropwatch...\n");
+			state = STATE_EXIT;
+			break;
+		}
+
+		if (!strcmp(input,"start")) {
+			state = STATE_RQST_ACTIVATE;
+			break;
+		}
+
+		if (!strcmp(input, "stop")) {
+			state = STATE_RQST_DEACTIVATE;
+			break;
+		}
+
+		if (!strcmp(input, "exit")) {
+			state = STATE_EXIT;
+			break;
+		}
+
+		if (!strcmp (input, "help")) {
+			display_help();
+			goto next_input;
+		}
+
+		if (!strncmp(input, "set", 3)) {
+			char *ninput = input+4;
+			if (!strncmp(ninput, "alertlimit", 10)) {
+				alimit = strtoul(ninput+10, NULL, 10);
+				printf("setting alert capture limit to %lu\n",
+					alimit);
+				goto next_input;
+			}
+		}
+next_input:
+		free(input);
+	} while(1);
+
+	free(input);
+}
+
+void enter_state_loop(void)
+{
+
+	int should_rx = 0;
+
+	while (1) {
+		switch(state) {
+
+		case STATE_IDLE:
+			should_rx = 0;
+			enter_command_line_mode();
+			break;
+		case STATE_RQST_ACTIVATE:
+			printf("Enabling monitoring...\n");
+			if (enable_drop_monitor() < 0) {
+				perror("Unable to send activation msg:");
+				state = STATE_FAILED;
+			} else {
+				state = STATE_ACTIVATING;
+				should_rx = 1;
+			}
+			
+			break;
+
+		case STATE_ACTIVATING:
+			printf("Waiting for activation ack....\n");
+			break;
+		case STATE_RECEIVING:
+			break;
+		case STATE_RQST_DEACTIVATE:
+			printf("Deactivation requested, turning off monitoring\n");
+			if (disable_drop_monitor() < 0) {
+				perror("Unable to send deactivation msg:");
+				state = STATE_FAILED;
+			} else
+				state = STATE_DEACTIVATING;
+			should_rx = 1;
+			break;
+		case STATE_DEACTIVATING:
+			printf("Waiting for deactivation ack...\n");
+			break;
+
+		case STATE_EXIT:
+		case STATE_FAILED:
+			should_rx = 0;
+			return;
+		default:
+			printf("Unknown state received!  exiting!\n");
+			state = STATE_FAILED;
+			should_rx = 0;
+			break;
+		}
+
+		/*
+		 * After we process our state loop, look to see if we have messages
+		 */
+		if (should_rx)
+			process_rx_message();
+	}
+}
+
+struct option options[] = {
+	{"lmethod", 1, 0, 'l'},
+	{0, 0, 0, 0}
+};
+
+void usage()
+{
+	printf("dropwatch [-l|--lmethod <method | list>]\n");
+}
+
+int main (int argc, char **argv)
+{
+	int c, optind;
+	lookup_init_method_t meth = METHOD_NULL;
+	/*
+	 * parse the options
+	 */
+	for(;;) {
+		c = getopt_long(argc, argv, "l:", options, &optind);
+
+		/* are we done parsing ? */
+		if (c == -1)
+			break;
+
+		switch(c) {
+
+		case '?':
+			usage();
+			exit(1);
+			/* NOTREACHED */
+		case 'l':
+			/* select the lookup method we want to use */
+			if (!strncmp(optarg, "list", 4)) {
+				printf("Available lookup methods:\n");
+				printf("kas - use /proc/kallsyms\n");
+				exit(0);
+			} else if (!strncmp(optarg, "kas", 3)) {
+				meth = METHOD_KALLSYMS;
+			} else {
+				printf("Unknown lookup method %s\n", optarg);
+				exit(1);
+			}
+			break;
+		default:
+			printf("Unknown option\n");
+			usage();
+			exit(1);
+			/* NOTREACHED */
+		}
+	}
+
+	/*
+	 * open up the netlink socket that we need to talk to our dropwatch socket
+	 */
+	nsd = setup_netlink_socket();
+
+	if (nsd == NULL) {
+		printf("Cleaning up on socket creation error\n");
+		goto out;
+	}
+
+
+	/*
+ 	 * Initalize our lookup library
+ 	 */
+	init_lookup(meth);
+
+	enter_state_loop();
+	printf("Shutting down ...\n");
+
+	nl_close(nsd);
+	exit(0);
+out:
+	exit(1);
+}
diff --git a/src/net_dropmon.h b/src/net_dropmon.h
new file mode 100644
index 0000000..0217fb8
--- /dev/null
+++ b/src/net_dropmon.h
@@ -0,0 +1,56 @@
+#ifndef __NET_DROPMON_H
+#define __NET_DROPMON_H
+
+#include <linux/netlink.h>
+
+struct net_dm_drop_point {
+	__u8 pc[8];
+	__u32 count;
+};
+
+#define NET_DM_CFG_VERSION  0
+#define NET_DM_CFG_ALERT_COUNT  1
+#define NET_DM_CFG_ALERT_DELAY 2
+#define NET_DM_CFG_MAX 3
+
+struct net_dm_config_entry {
+	__u32 type;
+	__u64 data __attribute__((aligned(8)));
+};
+
+struct net_dm_config_msg {
+	__u32 entries;
+	struct net_dm_config_entry options[0];
+};
+
+struct net_dm_alert_msg {
+	__u32 entries;
+	struct net_dm_drop_point points[0];
+};
+
+struct net_dm_user_msg {
+	union {
+		struct net_dm_config_msg user;
+		struct net_dm_alert_msg alert;
+	} u;
+};
+
+
+/* These are the netlink message types for this protocol */
+
+enum {
+	NET_DM_CMD_UNSPEC = 0,
+	NET_DM_CMD_ALERT,
+	NET_DM_CMD_CONFIG,
+	NET_DM_CMD_START,
+	NET_DM_CMD_STOP,
+	_NET_DM_CMD_MAX,
+};
+
+#define NET_DM_CMD_MAX (_NET_DM_CMD_MAX - 1)
+
+/*
+ * Our group identifiers
+ */
+#define NET_DM_GRP_ALERT 1
+#endif