With VPP 18.04, installation of vpp-dpdk-dkms_18.02.1-vpp1_amd64.dep fails.

root@tqt102:/opt/vpp/dpdk# dpkg -i vpp-dpdk-dkms_18.02.1-vpp1_amd64.debSelecting previously unselected package vpp-dpdk-dkms.
(Reading database ... 264709 files and directories currently installed.)
Preparing to unpack vpp-dpdk-dkms_18.02.1-vpp1_amd64.deb ...
Unpacking vpp-dpdk-dkms (18.02.1-vpp1) ...
Setting up vpp-dpdk-dkms (18.02.1-vpp1) ...
Loading new vpp-dpdk-dkms-18.02.1-vpp1 DKMS files...
First Installation: checking all kernels...
Building only for 4.4.0-109-generic
Building initial module for 4.4.0-109-generic
ERROR (dkms apport): unable to determine source package for vpp-dpdk-dkms
Error! Bad return status for module build on kernel: 4.4.0-109-generic (x86_64)
Consult /var/lib/dkms/vpp-dpdk-dkms/18.02.1-vpp1/build/make.log for more information.
root@tqt102:/opt/vpp/dpdk# less vpp-dpdk-dkms_18.02.1-vpp1_amd64.deb
vpp-dpdk-dkms_18.02.1-vpp1_amd64.deb:
new debian package, version 2.0.
size 1984 bytes: control archive=1044 bytes.
281 bytes, 11 lines control
239 bytes, 3 lines md5sums
906 bytes, 31 lines * postinst #!/bin/sh
327 bytes, 14 lines * prerm #!/bin/sh
Package: vpp-dpdk-dkms
Source: vpp-dpdk
Version: 18.02.1-vpp1
Architecture: amd64
Maintainer: vpp-dev@lists.fd.io
Installed-Size: 13
Depends: dkms (>= 2.1.0.0)
Conflicts: dpdk-igb-uio-dkms
Section: net
Priority: extra
Description: DPDK Development Package for VPP - Kernel Modules

• • • Contents:
      drwxr-xr-x root/root 0 2018-04-25 16:43 ./
      drwxr-xr-x root/root 0 2018-04-25 16:42 ./usr/
      drwxr-xr-x root/root 0 2018-04-25 16:42 ./usr/share/
      drwxr-xr-x root/root 0 2018-04-25 16:42 ./usr/share/doc/
      drwxr-xr-x root/root 0 2018-04-25 16:42 ./usr/share/doc/vpp-dpdk-dkms/
      rw-rr- root/root 146 2018-04-25 16:41 ./usr/share/doc/vpp-dpdk-dkms/changelog.Debian.gz
      drwxr-xr-x root/root 0 2018-04-25 16:42 ./usr/src/
      drwxr-xr-x root/root 0 2018-04-25 16:42 ./usr/src/vpp-dpdk-dkms-18.02.1-vpp1/
      rw-rr- root/root 240 2018-04-25 16:31 ./usr/src/vpp-dpdk-dkms-18.02.1-vpp1/Makefile
      rw-rr- root/root 209 2018-04-25 16:42 ./usr/src/vpp-dpdk-dkms-18.02.1-vpp1/dkms.conf

The following files are missing from the .deb:

rw-rr- root/root 3000 2018-04-19 11:03 ./usr/src/vpp-dpdk-dkms-18.02.1-vpp1/rte_pci_dev_feature_defs.h
rw-rr- root/root 3043 2018-04-19 11:03 ./usr/src/vpp-dpdk-dkms-18.02.1-vpp1/rte_pci_dev_features.h
rw-rr- root/root 15149 2018-04-19 11:03 ./usr/src/vpp-dpdk-dkms-18.02.1-vpp1/igb_uio.c
rw-rr- root/root 3279 2018-04-19 11:03 ./usr/src/vpp-dpdk-dkms-18.02.1-vpp1/compat.h

The problem is due to the DPDK source moving to the "-stable" directory,
in this case "dpdk-stable-18.02.1", instead of being in "dpdk-18.02.1".
The following change is one possible fix.

diff --git a/dpdk/deb/debian/rules b/dpdk/deb/debian/rules
index 98b1048..2b23821 100755
— a/dpdk/deb/debian/rules
+++ b/dpdk/deb/debian/rules
@@ -8,7 +8,7 @@ BASE_VER = $(word 1, $(subst -, ,$(VERSION)))
export DPDK_BUILD_DIR=$(CURDIR)/_build
export DPDK_INSTALL_DIR=$(CURDIR)/debian/tmp/usr

SRC=_build/dpdk$(BASE_VER)
+SRC=_build/dpdk-stable-$(BASE_VER)

MAKE_ARGS=-C ..

Maybe the code can be enhanced to use "dpdk-" or "dpdk-stable" as needed.