d/rules: make auto-loaded drivers dir versioned

The dir registered as CONFIG_RTE_EAL_PMD_PATH= will be loaded by EAL.
But that is an issue if multiple versions of DPDK are co-installed.

Version A of EAL might load drivers of version B or vice versa.
Since this isn't the normal linker loads, but loads from a dir we must
version it to avoid issues of these cross-version loads.

Fixes: https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/1741244

Change-Id: I4e97f077f531f7fcb746a2c5b2ffec60d140a4a1
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

diff --git a/debian/rules b/debian/rules
index ef7af40..41eb0e0 100755 (executable)
--- a/debian/rules
+++ b/debian/rules
@@ -8,6 +8,7 @@ export DH_OPTIONS=-v
 include /usr/share/dpkg/default.mk
 
 DPDK_ABI := $(shell echo $(DEB_VERSION_UPSTREAM) | cut -d '-' -f1 | cut -d '.'  -f1-2 | cut -d '~' -f1)
+DPDK_DRIVER_DIR ?= dpdk-$(DPDK_ABI)-drivers
 
 # see FEATURE AREAS in dpkg-buildflags(1)
 export DEB_BUILD_MAINT_OPTIONS = hardening=+all,-pie
@@ -181,7 +182,7 @@ ifeq (,$(filter dpdk_config=%,$(DEB_BUILD_OPTIONS)))
                -e 's,(CONFIG_RTE_EAL_IGB_UIO=).*,\1$(DPDK_CONFIG_BUILD_KMOD),' \
                -e 's,(CONFIG_RTE_KNI_KMOD=).*,\1$(DPDK_CONFIG_BUILD_KMOD),' \
                -e 's,(LIBRTE_PMD_PCAP=).*,\1y,' \
-               -e 's,(CONFIG_RTE_EAL_PMD_PATH=).*,\1"/usr/lib/$(DEB_HOST_MULTIARCH)/dpdk-pmds/",' \
+               -e 's,(CONFIG_RTE_EAL_PMD_PATH=).*,\1"/usr/lib/$(DEB_HOST_MULTIARCH)/$(DPDK_DRIVER_DIR)/",' \
                $(DPDK_STATIC_DIR)/.config
 endif
        echo "CONFIG_RTE_MAJOR_ABI=\"$(DPDK_ABI)\"" >> \
@@ -318,17 +319,17 @@ endif
          mkdir -p $${LIBD}; \
          mv $${lib} $${LIBD}; \
          if [ "$${LIBF#librte_pmd_}x" != "$${LIBF}x" ]; then \
-           mkdir -p $${LIBD}/dpdk-pmds; \
-           echo "PMD: linking $${LIBF} into RTE_EAL_PMD_PATH at $${LIBD}/dpdk-pmds/"; \
-           ln -s --relative --target-directory=$${LIBD}/dpdk-pmds/ $${LIBD}/$${LIBF}; \
+           mkdir -p $${LIBD}/$(DPDK_DRIVER_DIR); \
+           echo "PMD: linking $${LIBF} into RTE_EAL_PMD_PATH at $${LIBD}/$(DPDK_DRIVER_DIR)/"; \
+           ln -s --relative --target-directory=$${LIBD}/$(DPDK_DRIVER_DIR)/ $${LIBD}/$${LIBF}; \
          fi; \
          if [ "$${LIBF#librte_mempool_}x" != "$${LIBF}x" ]; then \
-           mkdir -p $${LIBD}/dpdk-pmds; \
-           echo "MEMPOOL: linking $${LIBF} into RTE_EAL_PMD_PATH at $${LIBD}/dpdk-pmds/"; \
-           ln -s --relative --target-directory=$${LIBD}/dpdk-pmds/ $${LIBD}/$${LIBF}; \
+           mkdir -p $${LIBD}/$(DPDK_DRIVER_DIR); \
+           echo "MEMPOOL: linking $${LIBF} into RTE_EAL_PMD_PATH at $${LIBD}/$(DPDK_DRIVER_DIR)/"; \
+           ln -s --relative --target-directory=$${LIBD}/$(DPDK_DRIVER_DIR)/ $${LIBD}/$${LIBF}; \
          fi; \
          if [ "$${LIBF#librte_eal}x" != "$${LIBF}x" ]; then \
-           mkdir -p $${LIBD}/dpdk-pmds; \
+           mkdir -p $${LIBD}/$(DPDK_DRIVER_DIR); \
          fi; \
        done
        # pkg-config