Merge branch 'bpf-prog-build'

Jiong Wang says:

====================
This set improves bpf object file related rules in selftests Makefile.
  - tell git to ignore the build dir "alu32".
  - extend sub-register mode compilation to all bpf object files to give
    LLVM compiler bpf back-end more exercise.
  - auto-generate bpf kernel object file list.
  - relax sub-register mode compilation criteria.

v1 -> v2:
  - rename "kern_progs" to "progs". (Alexei)
  - spin a new patch to remove build server kernel requirement for
    sub-register mode compilation (Alexei)
  - rebase on top of KaFai’s latest "test_sock_fields" patch set.
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>

51 files changed, 12 insertions, 34 deletions

diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore
index dd093bd91aa9..e47168d1257d 100644
--- a/tools/testing/selftests/bpf/.gitignore
+++ b/tools/testing/selftests/bpf/.gitignore
@@ -29,3 +29,4 @@ test_netcnt
 test_section_names
 test_tcpnotify_user
 test_libbpf
+alu32
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index c7e1e3255448..c3edf47da05d 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -25,41 +25,17 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test
 	test_socket_cookie test_cgroup_storage test_select_reuseport test_section_names \
 	test_netcnt test_tcpnotify_user test_sock_fields
 
-BPF_OBJ_FILES = \
-	test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \
-	sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o \
-	test_tcpnotify_kern.o sample_map_ret0.o test_tcpbpf_kern.o \
-	sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o \
-	test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o \
-	test_tunnel_kern.o test_sockhash_kern.o test_lwt_seg6local.o \
-	sendmsg4_prog.o sendmsg6_prog.o test_lirc_mode2_kern.o \
-	get_cgroup_id_kern.o socket_cookie_prog.o test_select_reuseport_kern.o \
-	test_skb_cgroup_id_kern.o bpf_flow.o netcnt_prog.o test_xdp_vlan.o \
-	xdp_dummy.o test_map_in_map.o test_spin_lock.o test_map_lock.o \
-	test_sock_fields_kern.o
-
-# Objects are built with default compilation flags and with sub-register
-# code-gen enabled.
-BPF_OBJ_FILES_DUAL_COMPILE = \
-	test_pkt_access.o test_pkt_access.o test_xdp.o test_adjust_tail.o \
-	test_l4lb.o test_l4lb_noinline.o test_xdp_noinline.o test_tcp_estats.o \
-	test_obj_id.o test_pkt_md_access.o test_tracepoint.o \
-	test_stacktrace_map.o test_stacktrace_map.o test_stacktrace_build_id.o \
-	test_stacktrace_build_id.o test_get_stack_rawtp.o \
-	test_get_stack_rawtp.o test_tracepoint.o test_sk_lookup_kern.o \
-	test_queue_map.o test_stack_map.o
-
-TEST_GEN_FILES = $(BPF_OBJ_FILES) $(BPF_OBJ_FILES_DUAL_COMPILE)
-
-# Also test sub-register code-gen if LLVM + kernel both has eBPF v3 processor
-# support which is the first version to contain both ALU32 and JMP32
-# instructions.
+BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c)))
+TEST_GEN_FILES = $(BPF_OBJ_FILES)
+
+# Also test sub-register code-gen if LLVM has eBPF v3 processor support which
+# contains both ALU32 and JMP32 instructions.
 SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
 			$(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \
-			$(LLC) -mattr=+alu32 -mcpu=probe 2>&1 | \
+			$(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \
 			grep 'if w')
 ifneq ($(SUBREG_CODEGEN),)
-TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES_DUAL_COMPILE))
+TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES))
 endif
 
 # Order correspond to 'make run_tests' order
@@ -190,7 +166,8 @@ $(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(ALU32_BUILD_DIR) \
 	$(CC) $(CFLAGS) -o $(ALU32_BUILD_DIR)/test_progs_32 $< \
 		trace_helpers.c $(OUTPUT)/libbpf.a $(LDLIBS)
 
-$(ALU32_BUILD_DIR)/%.o: %.c $(ALU32_BUILD_DIR) $(ALU32_BUILD_DIR)/test_progs_32
+$(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR) \
+					$(ALU32_BUILD_DIR)/test_progs_32
 	$(CLANG) $(CLANG_FLAGS) \
 		 -O2 -target bpf -emit-llvm -c $< -o - |      \
 	$(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \
@@ -202,7 +179,7 @@ endif
 
 # Have one program compiled without "-target bpf" to test whether libbpf loads
 # it successfully
-$(OUTPUT)/test_xdp.o: test_xdp.c
+$(OUTPUT)/test_xdp.o: progs/test_xdp.c
 	$(CLANG) $(CLANG_FLAGS) \
 		-O2 -emit-llvm -c $< -o - | \
 	$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
@@ -210,7 +187,7 @@ ifeq ($(DWARF2BTF),y)
 	$(BTF_PAHOLE) -J $@
 endif
 
-$(OUTPUT)/%.o: %.c
+$(OUTPUT)/%.o: progs/%.c
 	$(CLANG) $(CLANG_FLAGS) \
 		 -O2 -target bpf -emit-llvm -c $< -o - |      \
 	$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
diff --git a/tools/testing/selftests/bpf/bpf_flow.c b/tools/testing/selftests/bpf/progs/bpf_flow.c
index 284660f5aa95..284660f5aa95 100644
--- a/tools/testing/selftests/bpf/bpf_flow.c
+++ b/tools/testing/selftests/bpf/progs/bpf_flow.c
diff --git a/tools/testing/selftests/bpf/connect4_prog.c b/tools/testing/selftests/bpf/progs/connect4_prog.c
index 1fd244d35ba9..1fd244d35ba9 100644
--- a/tools/testing/selftests/bpf/connect4_prog.c
+++ b/tools/testing/selftests/bpf/progs/connect4_prog.c
diff --git a/tools/testing/selftests/bpf/connect6_prog.c b/tools/testing/selftests/bpf/progs/connect6_prog.c
index 26397ab7b3c7..26397ab7b3c7 100644
--- a/tools/testing/selftests/bpf/connect6_prog.c
+++ b/tools/testing/selftests/bpf/progs/connect6_prog.c
diff --git a/tools/testing/selftests/bpf/dev_cgroup.c b/tools/testing/selftests/bpf/progs/dev_cgroup.c
index ce41a3475f27..ce41a3475f27 100644
--- a/tools/testing/selftests/bpf/dev_cgroup.c
+++ b/tools/testing/selftests/bpf/progs/dev_cgroup.c
diff --git a/tools/testing/selftests/bpf/get_cgroup_id_kern.c b/tools/testing/selftests/bpf/progs/get_cgroup_id_kern.c
index 014dba10b8a5..014dba10b8a5 100644
--- a/tools/testing/selftests/bpf/get_cgroup_id_kern.c
+++ b/tools/testing/selftests/bpf/progs/get_cgroup_id_kern.c
diff --git a/tools/testing/selftests/bpf/netcnt_prog.c b/tools/testing/selftests/bpf/progs/netcnt_prog.c
index 9f741e69cebe..9f741e69cebe 100644
--- a/tools/testing/selftests/bpf/netcnt_prog.c
+++ b/tools/testing/selftests/bpf/progs/netcnt_prog.c
diff --git a/tools/testing/selftests/bpf/sample_map_ret0.c b/tools/testing/selftests/bpf/progs/sample_map_ret0.c
index 0756303676ac..0756303676ac 100644
--- a/tools/testing/selftests/bpf/sample_map_ret0.c
+++ b/tools/testing/selftests/bpf/progs/sample_map_ret0.c
diff --git a/tools/testing/selftests/bpf/sample_ret0.c b/tools/testing/selftests/bpf/progs/sample_ret0.c
index fec99750d6ea..fec99750d6ea 100644
--- a/tools/testing/selftests/bpf/sample_ret0.c
+++ b/tools/testing/selftests/bpf/progs/sample_ret0.c
diff --git a/tools/testing/selftests/bpf/sendmsg4_prog.c b/tools/testing/selftests/bpf/progs/sendmsg4_prog.c
index a91536b1c47e..a91536b1c47e 100644
--- a/tools/testing/selftests/bpf/sendmsg4_prog.c
+++ b/tools/testing/selftests/bpf/progs/sendmsg4_prog.c
diff --git a/tools/testing/selftests/bpf/sendmsg6_prog.c b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c
index 5aeaa284fc47..5aeaa284fc47 100644
--- a/tools/testing/selftests/bpf/sendmsg6_prog.c
+++ b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c
diff --git a/tools/testing/selftests/bpf/socket_cookie_prog.c b/tools/testing/selftests/bpf/progs/socket_cookie_prog.c
index 9ff8ac4b0bf6..9ff8ac4b0bf6 100644
--- a/tools/testing/selftests/bpf/socket_cookie_prog.c
+++ b/tools/testing/selftests/bpf/progs/socket_cookie_prog.c
diff --git a/tools/testing/selftests/bpf/sockmap_parse_prog.c b/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c
index 0f92858f6226..0f92858f6226 100644
--- a/tools/testing/selftests/bpf/sockmap_parse_prog.c
+++ b/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c
diff --git a/tools/testing/selftests/bpf/sockmap_tcp_msg_prog.c b/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c
index 12a7b5c82ed6..12a7b5c82ed6 100644
--- a/tools/testing/selftests/bpf/sockmap_tcp_msg_prog.c
+++ b/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c
diff --git a/tools/testing/selftests/bpf/sockmap_verdict_prog.c b/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c
index 2ce7634a4012..2ce7634a4012 100644
--- a/tools/testing/selftests/bpf/sockmap_verdict_prog.c
+++ b/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c
diff --git a/tools/testing/selftests/bpf/test_adjust_tail.c b/tools/testing/selftests/bpf/progs/test_adjust_tail.c
index 4cd5e860c903..4cd5e860c903 100644
--- a/tools/testing/selftests/bpf/test_adjust_tail.c
+++ b/tools/testing/selftests/bpf/progs/test_adjust_tail.c
diff --git a/tools/testing/selftests/bpf/test_btf_haskv.c b/tools/testing/selftests/bpf/progs/test_btf_haskv.c
index e5c79fe0ffdb..e5c79fe0ffdb 100644
--- a/tools/testing/selftests/bpf/test_btf_haskv.c
+++ b/tools/testing/selftests/bpf/progs/test_btf_haskv.c
diff --git a/tools/testing/selftests/bpf/test_btf_nokv.c b/tools/testing/selftests/bpf/progs/test_btf_nokv.c
index 434188c37774..434188c37774 100644
--- a/tools/testing/selftests/bpf/test_btf_nokv.c
+++ b/tools/testing/selftests/bpf/progs/test_btf_nokv.c
diff --git a/tools/testing/selftests/bpf/test_get_stack_rawtp.c b/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c
index f6d9f238e00a..f6d9f238e00a 100644
--- a/tools/testing/selftests/bpf/test_get_stack_rawtp.c
+++ b/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c
diff --git a/tools/testing/selftests/bpf/test_l4lb.c b/tools/testing/selftests/bpf/progs/test_l4lb.c
index 1e10c9590991..1e10c9590991 100644
--- a/tools/testing/selftests/bpf/test_l4lb.c
+++ b/tools/testing/selftests/bpf/progs/test_l4lb.c
diff --git a/tools/testing/selftests/bpf/test_l4lb_noinline.c b/tools/testing/selftests/bpf/progs/test_l4lb_noinline.c
index ba44a14e6dc4..ba44a14e6dc4 100644
--- a/tools/testing/selftests/bpf/test_l4lb_noinline.c
+++ b/tools/testing/selftests/bpf/progs/test_l4lb_noinline.c
diff --git a/tools/testing/selftests/bpf/test_lirc_mode2_kern.c b/tools/testing/selftests/bpf/progs/test_lirc_mode2_kern.c
index 4147130cc3b7..4147130cc3b7 100644
--- a/tools/testing/selftests/bpf/test_lirc_mode2_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_lirc_mode2_kern.c
diff --git a/tools/testing/selftests/bpf/test_lwt_seg6local.c b/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c
index 0575751bc1bc..0575751bc1bc 100644
--- a/tools/testing/selftests/bpf/test_lwt_seg6local.c
+++ b/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c
diff --git a/tools/testing/selftests/bpf/test_map_in_map.c b/tools/testing/selftests/bpf/progs/test_map_in_map.c
index ce923e67e08e..ce923e67e08e 100644
--- a/tools/testing/selftests/bpf/test_map_in_map.c
+++ b/tools/testing/selftests/bpf/progs/test_map_in_map.c
diff --git a/tools/testing/selftests/bpf/test_map_lock.c b/tools/testing/selftests/bpf/progs/test_map_lock.c
index af8cc68ed2f9..af8cc68ed2f9 100644
--- a/tools/testing/selftests/bpf/test_map_lock.c
+++ b/tools/testing/selftests/bpf/progs/test_map_lock.c
diff --git a/tools/testing/selftests/bpf/test_obj_id.c b/tools/testing/selftests/bpf/progs/test_obj_id.c
index 880d2963b472..880d2963b472 100644
--- a/tools/testing/selftests/bpf/test_obj_id.c
+++ b/tools/testing/selftests/bpf/progs/test_obj_id.c
diff --git a/tools/testing/selftests/bpf/test_pkt_access.c b/tools/testing/selftests/bpf/progs/test_pkt_access.c
index 6e11ba11709e..6e11ba11709e 100644
--- a/tools/testing/selftests/bpf/test_pkt_access.c
+++ b/tools/testing/selftests/bpf/progs/test_pkt_access.c
diff --git a/tools/testing/selftests/bpf/test_pkt_md_access.c b/tools/testing/selftests/bpf/progs/test_pkt_md_access.c
index 7956302ecdf2..7956302ecdf2 100644
--- a/tools/testing/selftests/bpf/test_pkt_md_access.c
+++ b/tools/testing/selftests/bpf/progs/test_pkt_md_access.c
diff --git a/tools/testing/selftests/bpf/test_queue_map.c b/tools/testing/selftests/bpf/progs/test_queue_map.c
index 87db1f9da33d..87db1f9da33d 100644
--- a/tools/testing/selftests/bpf/test_queue_map.c
+++ b/tools/testing/selftests/bpf/progs/test_queue_map.c
diff --git a/tools/testing/selftests/bpf/test_select_reuseport_kern.c b/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
index 5b54ec637ada..5b54ec637ada 100644
--- a/tools/testing/selftests/bpf/test_select_reuseport_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
diff --git a/tools/testing/selftests/bpf/test_sk_lookup_kern.c b/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c
index e21cd736c196..e21cd736c196 100644
--- a/tools/testing/selftests/bpf/test_sk_lookup_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c
diff --git a/tools/testing/selftests/bpf/test_skb_cgroup_id_kern.c b/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c
index 68cf9829f5a7..68cf9829f5a7 100644
--- a/tools/testing/selftests/bpf/test_skb_cgroup_id_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c
diff --git a/tools/testing/selftests/bpf/test_sock_fields_kern.c b/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c
index de1a43e8f610..de1a43e8f610 100644
--- a/tools/testing/selftests/bpf/test_sock_fields_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c
diff --git a/tools/testing/selftests/bpf/test_sockhash_kern.c b/tools/testing/selftests/bpf/progs/test_sockhash_kern.c
index e6755916442a..e6755916442a 100644
--- a/tools/testing/selftests/bpf/test_sockhash_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_sockhash_kern.c
diff --git a/tools/testing/selftests/bpf/test_sockmap_kern.c b/tools/testing/selftests/bpf/progs/test_sockmap_kern.c
index 677b2ed1cc1e..677b2ed1cc1e 100644
--- a/tools/testing/selftests/bpf/test_sockmap_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_sockmap_kern.c
diff --git a/tools/testing/selftests/bpf/test_spin_lock.c b/tools/testing/selftests/bpf/progs/test_spin_lock.c
index 40f904312090..40f904312090 100644
--- a/tools/testing/selftests/bpf/test_spin_lock.c
+++ b/tools/testing/selftests/bpf/progs/test_spin_lock.c
diff --git a/tools/testing/selftests/bpf/test_stack_map.c b/tools/testing/selftests/bpf/progs/test_stack_map.c
index 31c3880e6da0..31c3880e6da0 100644
--- a/tools/testing/selftests/bpf/test_stack_map.c
+++ b/tools/testing/selftests/bpf/progs/test_stack_map.c
diff --git a/tools/testing/selftests/bpf/test_stacktrace_build_id.c b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
index d86c281e957f..d86c281e957f 100644
--- a/tools/testing/selftests/bpf/test_stacktrace_build_id.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
diff --git a/tools/testing/selftests/bpf/test_stacktrace_map.c b/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
index af111af7ca1a..af111af7ca1a 100644
--- a/tools/testing/selftests/bpf/test_stacktrace_map.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
diff --git a/tools/testing/selftests/bpf/test_tcp_estats.c b/tools/testing/selftests/bpf/progs/test_tcp_estats.c
index bee3bbecc0c4..bee3bbecc0c4 100644
--- a/tools/testing/selftests/bpf/test_tcp_estats.c
+++ b/tools/testing/selftests/bpf/progs/test_tcp_estats.c
diff --git a/tools/testing/selftests/bpf/test_tcpbpf_kern.c b/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c
index 74f73b33a7b0..74f73b33a7b0 100644
--- a/tools/testing/selftests/bpf/test_tcpbpf_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c
diff --git a/tools/testing/selftests/bpf/test_tcpnotify_kern.c b/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
index edbca203ce2d..edbca203ce2d 100644
--- a/tools/testing/selftests/bpf/test_tcpnotify_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
diff --git a/tools/testing/selftests/bpf/test_tracepoint.c b/tools/testing/selftests/bpf/progs/test_tracepoint.c
index 04bf084517e0..04bf084517e0 100644
--- a/tools/testing/selftests/bpf/test_tracepoint.c
+++ b/tools/testing/selftests/bpf/progs/test_tracepoint.c
diff --git a/tools/testing/selftests/bpf/test_tunnel_kern.c b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
index 504df69c83df..504df69c83df 100644
--- a/tools/testing/selftests/bpf/test_tunnel_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
diff --git a/tools/testing/selftests/bpf/test_xdp.c b/tools/testing/selftests/bpf/progs/test_xdp.c
index 5e7df8bb5b5d..5e7df8bb5b5d 100644
--- a/tools/testing/selftests/bpf/test_xdp.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp.c
diff --git a/tools/testing/selftests/bpf/test_xdp_meta.c b/tools/testing/selftests/bpf/progs/test_xdp_meta.c
index 8d0182650653..8d0182650653 100644
--- a/tools/testing/selftests/bpf/test_xdp_meta.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_meta.c
diff --git a/tools/testing/selftests/bpf/test_xdp_noinline.c b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c
index 5e4aac74f9d0..5e4aac74f9d0 100644
--- a/tools/testing/selftests/bpf/test_xdp_noinline.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c
diff --git a/tools/testing/selftests/bpf/test_xdp_redirect.c b/tools/testing/selftests/bpf/progs/test_xdp_redirect.c
index ef9e704be140..ef9e704be140 100644
--- a/tools/testing/selftests/bpf/test_xdp_redirect.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_redirect.c
diff --git a/tools/testing/selftests/bpf/test_xdp_vlan.c b/tools/testing/selftests/bpf/progs/test_xdp_vlan.c
index 365a7d2d9f5c..365a7d2d9f5c 100644
--- a/tools/testing/selftests/bpf/test_xdp_vlan.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_vlan.c
diff --git a/tools/testing/selftests/bpf/xdp_dummy.c b/tools/testing/selftests/bpf/progs/xdp_dummy.c
index 43b0ef1001ed..43b0ef1001ed 100644
--- a/tools/testing/selftests/bpf/xdp_dummy.c
+++ b/tools/testing/selftests/bpf/progs/xdp_dummy.c