Hi all,
This patch series continues the work to migrate the script tests into prog_tests.
test_xdp_meta.sh uses the BPF programs defined in progs/test_xdp_meta.c to do a simple XDP/TC functional test that checks the metadata allocation performed by the bpf_xdp_adjust_meta() helper.
This is already partly covered by two tests under prog_tests/: - xdp_context_test_run.c uses bpf_prog_test_run_opts() to verify the validity of the xdp_md context after a call to bpf_xdp_adjust_meta() - xdp_metadata.c ensures that these meta-data can be exchanged through an AF_XDP socket.
However test_xdp_meta.sh also verifies that the meta-data initialized in the struct xdp_md is forwarded to the struct __sk_buff used by BPF programs at 'TC level'. To cover this, I add a test case in xdp_context_test_run.c that uses the same BPF programs from progs/test_xdp_meta.c.
--- Changes in v2: - Add missing close_netns() - Use a unique 'close' label - Link to v1: https://lore.kernel.org/r/20241206-xdp_meta-v1-0-5c150618f6e9@bootlin.com
--- Bastien Curutchet (2): selftests/bpf: test_xdp_meta: Rename BPF sections selftests/bpf: Migrate test_xdp_meta.sh into xdp_context_test_run.c
tools/testing/selftests/bpf/Makefile | 1 - .../bpf/prog_tests/xdp_context_test_run.c | 87 ++++++++++++++++++++++ tools/testing/selftests/bpf/progs/test_xdp_meta.c | 4 +- tools/testing/selftests/bpf/test_xdp_meta.sh | 58 --------------- 4 files changed, 89 insertions(+), 61 deletions(-) --- base-commit: 0c30734c4f35c4784d3d3ca1bb89d9779045878c change-id: 20241203-xdp_meta-868307cd0e03
Best regards,
SEC("t") and SEC("x") can't be loaded by the __load() helper.
Rename these sections SEC("tc") and SEC("xdp") so they can be interpreted by the __load() helper in upcoming patch. Update the test_xdp_meta.sh to fit these new names.
Signed-off-by: Bastien Curutchet (eBPF Foundation) bastien.curutchet@bootlin.com --- tools/testing/selftests/bpf/progs/test_xdp_meta.c | 4 ++-- tools/testing/selftests/bpf/test_xdp_meta.sh | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_meta.c b/tools/testing/selftests/bpf/progs/test_xdp_meta.c index a7c4a7d49fe6b54b5841e36bcbe9ae9c8577df38..fe2d71ae0e717a32bd2b3a891da8e0d6fa3eba2c 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_meta.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_meta.c @@ -8,7 +8,7 @@ #define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1) #define ctx_ptr(ctx, mem) (void *)(unsigned long)ctx->mem
-SEC("t") +SEC("tc") int ing_cls(struct __sk_buff *ctx) { __u8 *data, *data_meta, *data_end; @@ -28,7 +28,7 @@ int ing_cls(struct __sk_buff *ctx) return diff ? TC_ACT_SHOT : TC_ACT_OK; }
-SEC("x") +SEC("xdp") int ing_xdp(struct xdp_md *ctx) { __u8 *data, *data_meta, *data_end; diff --git a/tools/testing/selftests/bpf/test_xdp_meta.sh b/tools/testing/selftests/bpf/test_xdp_meta.sh index 2740322c1878b3687d9cc4295f81a40042dd24c6..6039b92f10949d48cd9d703d6981ae8a9388e8df 100755 --- a/tools/testing/selftests/bpf/test_xdp_meta.sh +++ b/tools/testing/selftests/bpf/test_xdp_meta.sh @@ -43,11 +43,11 @@ ip netns exec ${NS2} ip addr add 10.1.1.22/24 dev veth2 ip netns exec ${NS1} tc qdisc add dev veth1 clsact ip netns exec ${NS2} tc qdisc add dev veth2 clsact
-ip netns exec ${NS1} tc filter add dev veth1 ingress bpf da obj ${BPF_FILE} sec t -ip netns exec ${NS2} tc filter add dev veth2 ingress bpf da obj ${BPF_FILE} sec t +ip netns exec ${NS1} tc filter add dev veth1 ingress bpf da obj ${BPF_FILE} sec tc +ip netns exec ${NS2} tc filter add dev veth2 ingress bpf da obj ${BPF_FILE} sec tc
-ip netns exec ${NS1} ip link set dev veth1 xdp obj ${BPF_FILE} sec x -ip netns exec ${NS2} ip link set dev veth2 xdp obj ${BPF_FILE} sec x +ip netns exec ${NS1} ip link set dev veth1 xdp obj ${BPF_FILE} sec xdp +ip netns exec ${NS2} ip link set dev veth2 xdp obj ${BPF_FILE} sec xdp
ip netns exec ${NS1} ip link set dev veth1 up ip netns exec ${NS2} ip link set dev veth2 up
test_xdp_meta.sh can't be used by the BPF CI.
Migrate test_xdp_meta.sh in a new test case in xdp_context_test_run.c. It uses the same BPF programs located in progs/test_xdp_meta.c and the same network topology. Remove test_xdp_meta.sh and its Makefile entry.
Signed-off-by: Bastien Curutchet (eBPF Foundation) bastien.curutchet@bootlin.com --- tools/testing/selftests/bpf/Makefile | 1 - .../bpf/prog_tests/xdp_context_test_run.c | 87 ++++++++++++++++++++++ tools/testing/selftests/bpf/test_xdp_meta.sh | 58 --------------- 3 files changed, 87 insertions(+), 59 deletions(-)
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 9e870e519c30e4a241ce05491743e1784af2bd8b..947ac47f2f6b2c59c6d7555c68c3f2c057b1c061 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -129,7 +129,6 @@ TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) TEST_PROGS := test_kmod.sh \ test_xdp_redirect.sh \ test_xdp_redirect_multi.sh \ - test_xdp_meta.sh \ test_tunnel.sh \ test_lwt_seg6local.sh \ test_lirc_mode2.sh \ diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c b/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c index e6a783c7f5db9c818bd354027bae7393ee3c166b..7c4156af0c299bcaf07843b880a10b4aa7737110 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c @@ -2,6 +2,14 @@ #include <test_progs.h> #include <network_helpers.h> #include "test_xdp_context_test_run.skel.h" +#include "test_xdp_meta.skel.h" + +#define TX_ADDR "10.0.0.1" +#define RX_ADDR "10.0.0.2" +#define RX_NAME "veth0" +#define TX_NAME "veth1" +#define TX_NETNS "xdp_context_tx" +#define RX_NETNS "xdp_context_rx"
void test_xdp_context_error(int prog_fd, struct bpf_test_run_opts opts, __u32 data_meta, __u32 data, __u32 data_end, @@ -103,3 +111,82 @@ void test_xdp_context_test_run(void)
test_xdp_context_test_run__destroy(skel); } + +void test_xdp_context_functional(void) +{ + LIBBPF_OPTS(bpf_tc_hook, tc_hook, .attach_point = BPF_TC_INGRESS); + LIBBPF_OPTS(bpf_tc_opts, tc_opts, .handle = 1, .priority = 1); + struct netns_obj *rx_ns = NULL, *tx_ns = NULL; + struct bpf_program *tc_prog, *xdp_prog; + struct test_xdp_meta *skel = NULL; + struct nstoken *nstoken = NULL; + int rx_ifindex; + int ret; + + tx_ns = netns_new(TX_NETNS, false); + if (!ASSERT_OK_PTR(tx_ns, "create tx_ns")) + return; + + rx_ns = netns_new(RX_NETNS, false); + if (!ASSERT_OK_PTR(rx_ns, "create rx_ns")) + goto close; + + SYS(close, "ip link add " RX_NAME " netns " RX_NETNS + " type veth peer name " TX_NAME " netns " TX_NETNS); + + nstoken = open_netns(RX_NETNS); + if (!ASSERT_OK_PTR(nstoken, "setns rx_ns")) + goto close; + + SYS(close, "ip addr add " RX_ADDR "/24 dev " RX_NAME); + SYS(close, "ip link set dev " RX_NAME " up"); + + skel = test_xdp_meta__open_and_load(); + if (!ASSERT_OK_PTR(skel, "open and load skeleton")) + goto close; + + rx_ifindex = if_nametoindex(RX_NAME); + if (!ASSERT_GE(rx_ifindex, 0, "if_nametoindex rx")) + goto close; + + tc_hook.ifindex = rx_ifindex; + ret = bpf_tc_hook_create(&tc_hook); + if (!ASSERT_OK(ret, "bpf_tc_hook_create")) + goto close; + + tc_prog = bpf_object__find_program_by_name(skel->obj, "ing_cls"); + if (!ASSERT_OK_PTR(tc_prog, "open ing_cls prog")) + goto close; + + tc_opts.prog_fd = bpf_program__fd(tc_prog); + ret = bpf_tc_attach(&tc_hook, &tc_opts); + if (!ASSERT_OK(ret, "bpf_tc_attach")) + goto close; + + xdp_prog = bpf_object__find_program_by_name(skel->obj, "ing_xdp"); + if (!ASSERT_OK_PTR(xdp_prog, "open ing_xdp prog")) + goto close; + + ret = bpf_xdp_attach(rx_ifindex, + bpf_program__fd(xdp_prog), + 0, NULL); + if (!ASSERT_GE(ret, 0, "bpf_xdp_attach")) + goto close; + + close_netns(nstoken); + + nstoken = open_netns(TX_NETNS); + if (!ASSERT_OK_PTR(nstoken, "setns tx_ns")) + goto close; + + SYS(close, "ip addr add " TX_ADDR "/24 dev " TX_NAME); + SYS(close, "ip link set dev " TX_NAME " up"); + SYS(close, "ping -c 1 " RX_ADDR); + +close: + close_netns(nstoken); + test_xdp_meta__destroy(skel); + netns_free(rx_ns); + netns_free(tx_ns); +} + diff --git a/tools/testing/selftests/bpf/test_xdp_meta.sh b/tools/testing/selftests/bpf/test_xdp_meta.sh deleted file mode 100755 index 6039b92f10949d48cd9d703d6981ae8a9388e8df..0000000000000000000000000000000000000000 --- a/tools/testing/selftests/bpf/test_xdp_meta.sh +++ /dev/null @@ -1,58 +0,0 @@ -#!/bin/sh - -BPF_FILE="test_xdp_meta.bpf.o" -# Kselftest framework requirement - SKIP code is 4. -readonly KSFT_SKIP=4 -readonly NS1="ns1-$(mktemp -u XXXXXX)" -readonly NS2="ns2-$(mktemp -u XXXXXX)" - -cleanup() -{ - if [ "$?" = "0" ]; then - echo "selftests: test_xdp_meta [PASS]"; - else - echo "selftests: test_xdp_meta [FAILED]"; - fi - - set +e - ip link del veth1 2> /dev/null - ip netns del ${NS1} 2> /dev/null - ip netns del ${NS2} 2> /dev/null -} - -ip link set dev lo xdp off 2>/dev/null > /dev/null -if [ $? -ne 0 ];then - echo "selftests: [SKIP] Could not run test without the ip xdp support" - exit $KSFT_SKIP -fi -set -e - -ip netns add ${NS1} -ip netns add ${NS2} - -trap cleanup 0 2 3 6 9 - -ip link add veth1 type veth peer name veth2 - -ip link set veth1 netns ${NS1} -ip link set veth2 netns ${NS2} - -ip netns exec ${NS1} ip addr add 10.1.1.11/24 dev veth1 -ip netns exec ${NS2} ip addr add 10.1.1.22/24 dev veth2 - -ip netns exec ${NS1} tc qdisc add dev veth1 clsact -ip netns exec ${NS2} tc qdisc add dev veth2 clsact - -ip netns exec ${NS1} tc filter add dev veth1 ingress bpf da obj ${BPF_FILE} sec tc -ip netns exec ${NS2} tc filter add dev veth2 ingress bpf da obj ${BPF_FILE} sec tc - -ip netns exec ${NS1} ip link set dev veth1 xdp obj ${BPF_FILE} sec xdp -ip netns exec ${NS2} ip link set dev veth2 xdp obj ${BPF_FILE} sec xdp - -ip netns exec ${NS1} ip link set dev veth1 up -ip netns exec ${NS2} ip link set dev veth2 up - -ip netns exec ${NS1} ping -c 1 10.1.1.22 -ip netns exec ${NS2} ping -c 1 10.1.1.11 - -exit 0
Hello:
This series was applied to bpf/bpf-next.git (net) by Martin KaFai Lau martin.lau@kernel.org:
On Fri, 13 Dec 2024 16:06:19 +0100 you wrote:
Hi all,
This patch series continues the work to migrate the script tests into prog_tests.
test_xdp_meta.sh uses the BPF programs defined in progs/test_xdp_meta.c to do a simple XDP/TC functional test that checks the metadata allocation performed by the bpf_xdp_adjust_meta() helper.
[...]
Here is the summary with links: - [bpf-next,v2,1/2] selftests/bpf: test_xdp_meta: Rename BPF sections https://git.kernel.org/bpf/bpf-next/c/8dccbecbb969 - [bpf-next,v2,2/2] selftests/bpf: Migrate test_xdp_meta.sh into xdp_context_test_run.c (no matching commit)
You are awesome, thank you!
linux-kselftest-mirror@lists.linaro.org
-
Bastien Curutchet -
patchwork-bot+netdevbpf＠kernel.org