cilium-map-migrate: remove program and all of its references

This has been replaced with a Go-based implementation, so no longer needs to
be part of the build/packaging process.

The CILIUM_BPF_MNT env has been removed from shell invocations pertaining to
bpffs since it was only referenced in cilium-map-migrate.

Signed-off-by: Timo Beckers <timo@isovalent.com>

CODEOWNERS

@@ -46,7 +46,6 @@
 /bpf/ @cilium/bpf
 Makefile* @cilium/build
 /bpf/Makefile* @cilium/build @cilium/loader
-/bpf/cilium-map-migrate.c @cilium/loader
 /bpf/init.sh @cilium/loader
 /bpf/custom/Makefile* @cilium/build @cilium/loader
 /bpf/sockops/Makefile* @cilium/build @cilium/loader

Makefile

@@ -134,8 +134,6 @@ PRIV_TEST_PKGS_EVAL := $(shell for pkg in $(TESTPKGS); do echo $$pkg; done | xar
 PRIV_TEST_PKGS ?= $(PRIV_TEST_PKGS_EVAL)
 tests-privileged: GO_TAGS_FLAGS+=privileged_tests ## Run integration-tests for Cilium that requires elevated privileges.
 tests-privileged:
-	# cilium-map-migrate is a dependency of some integration tests.
-	$(QUIET) $(MAKE) $(SUBMAKEOPTS) -C bpf cilium-map-migrate
 	$(MAKE) init-coverage
 	for pkg in $(patsubst %,github.com/cilium/cilium/%,$(PRIV_TEST_PKGS)); do \
 		PATH=$(PATH):$(ROOT_DIR)/bpf $(GO_TEST) $(TEST_LDFLAGS) $$pkg $(GOTEST_UNIT_BASE) $(GOTEST_COVER_OPTS) \

Makefile.defs

@@ -94,7 +94,7 @@ ifneq ($(wildcard $(dir $(lastword $(MAKEFILE_LIST)))/.git),)
     BPF_SRCFILES := $(shell git ls-files $(ROOT_DIR)/bpf/ | LC_ALL=C sort | tr "\n" ' ')
 else
     # this line has to be in-sync with bpf/.gitignore, please note usage of make patterns like `%.i`
-    BPF_SRCFILES_IGNORE += bpf/cilium-map-migrate bpf/cilium-probe-kernel-hz bpf/%.i bpf/%.s bpf/.rebuild_all
+    BPF_SRCFILES_IGNORE += bpf/cilium-probe-kernel-hz bpf/%.i bpf/%.s bpf/.rebuild_all
     BPF_SRCFILES := $(shell find $(ROOT_DIR)/bpf/ -type f | LC_ALL=C sort | tr "\n" ' ')
 endif
 

bpf/.gitignore

@@ -1,5 +1,4 @@
 # when updating this file, make sure to update `BPF_SRCFILES_IGNORE` in `Makefile.defs`
-cilium-map-migrate
 cilium-probe-kernel-hz
 compile_commands.json
 *.i

bpf/Makefile

@@ -13,7 +13,7 @@ BPF_SIMPLE_LL = $(patsubst %.o,%.ll,${BPF_SIMPLE})
 BPF_TEST=tests/bpf_ct_tests.o
 BPF = bpf_lxc.o bpf_overlay.o bpf_sock.o bpf_host.o bpf_xdp.o $(BPF_SIMPLE)
 
-TARGET=cilium-map-migrate cilium-probe-kernel-hz
+TARGET=cilium-probe-kernel-hz
 KERNEL ?= "49"
 
 include ./Makefile.bpf