Public bug reported:
The DPDK build system uses the RTE_KERNELDIR make variable to determine
which kernel version to build for. DKMS provides the kernel version to
build for in the $kernelver and $kernel_source_dir variables. Because
you use a custom MAKE command, this must be used in the MAKE variable of
dkms.conf to generate the correct RTE_KERNELDIR for the build, by doing
something like this:
--- /usr/src/dpdk-rte-kni-16.07.2/dkms.conf 2017-05-01 18:23:13.242496251
-0400
+++ /usr/src/dpdk-rte-kni-16.07.2/dkms.conf.new 2017-05-01 18:23:20.638620058
-0400
@@ -1,7 +1,7 @@
PACKAGE_NAME="dpdk-rte-kni"
PACKAGE_VERSION="16.07.2"
BUILT_MODULE_NAME[0]="rte_kni"
-MAKE="source /usr/share/dpdk/dpdk-sdk-env.sh; make
MODULE_CFLAGS='-I/usr/include/dpdk -include /usr/include/dpdk/rte_config.h
-I$source_tree/dpdk-rte-kni-16.07.2/ethtool/ixgbe
-I$source_tree/dpdk-rte-kni-16.07.2/ethtool/igb'"
+MAKE="source /usr/share/dpdk/dpdk-sdk-env.sh; make
MODULE_CFLAGS='-I/usr/include/dpdk -include /usr/include/dpdk/rte_config.h
-I$source_tree/dpdk-rte-kni-16.07.2/ethtool/ixgbe
-I$source_tree/dpdk-rte-kni-16.07.2/ethtool/igb'
RTE_KERNELDIR=$kernel_source_dir"
CLEAN="source /usr/share/dpdk/dpdk-sdk-env.sh; make clean"
DEST_MODULE_LOCATION[0]="/updates/dkms"
AUTOINSTALL="YES"
Because this is not done, whenever the kernel package is upgraded and
DKMS triggers a rebuild, it will trigger a rebuild for the *running*
kernel which gets installed into the *newly installed* kernel directory,
which is wrong and causes the module to fail to load when the newly
installed kernel is booted.
** Affects: dpdk (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1687492
Title:
DPDK dkms packages build for wrong kernel
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