diff options
Diffstat (limited to 'samples/bpf')
| -rw-r--r-- | samples/bpf/Makefile | 2 | ||||
| -rw-r--r-- | samples/bpf/test_cgrp2_sock2.c | 61 | ||||
| -rwxr-xr-x | samples/bpf/test_cgrp2_sock2.sh | 21 |
3 files changed, 62 insertions, 22 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 7c61118525f7..d31e082c369e 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -82,7 +82,7 @@ test_overhead-objs := bpf_load.o test_overhead_user.o test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o test_cgrp2_attach-objs := test_cgrp2_attach.o test_cgrp2_sock-objs := test_cgrp2_sock.o -test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o +test_cgrp2_sock2-objs := test_cgrp2_sock2.o xdp1-objs := xdp1_user.o # reuse xdp1 source intentionally xdp2-objs := xdp1_user.o diff --git a/samples/bpf/test_cgrp2_sock2.c b/samples/bpf/test_cgrp2_sock2.c index a9277b118c33..e7060aaa2f5a 100644 --- a/samples/bpf/test_cgrp2_sock2.c +++ b/samples/bpf/test_cgrp2_sock2.c @@ -20,9 +20,9 @@ #include <net/if.h> #include <linux/bpf.h> #include <bpf/bpf.h> +#include <bpf/libbpf.h> #include "bpf_insn.h" -#include "bpf_load.h" static int usage(const char *argv0) { @@ -32,37 +32,64 @@ static int usage(const char *argv0) int main(int argc, char **argv) { - int cg_fd, ret, filter_id = 0; + int cg_fd, err, ret = EXIT_FAILURE, filter_id = 0, prog_cnt = 0; + const char *link_pin_path = "/sys/fs/bpf/test_cgrp2_sock2"; + struct bpf_link *link = NULL; + struct bpf_program *progs[2]; + struct bpf_program *prog; + struct bpf_object *obj; if (argc < 3) return usage(argv[0]); + if (argc > 3) + filter_id = atoi(argv[3]); + cg_fd = open(argv[1], O_DIRECTORY | O_RDONLY); if (cg_fd < 0) { printf("Failed to open cgroup path: '%s'\n", strerror(errno)); - return EXIT_FAILURE; + return ret; } - if (load_bpf_file(argv[2])) - return EXIT_FAILURE; - - printf("Output from kernel verifier:\n%s\n-------\n", bpf_log_buf); + obj = bpf_object__open_file(argv[2], NULL); + if (libbpf_get_error(obj)) { + printf("ERROR: opening BPF object file failed\n"); + return ret; + } - if (argc > 3) - filter_id = atoi(argv[3]); + bpf_object__for_each_program(prog, obj) { + progs[prog_cnt] = prog; + prog_cnt++; + } if (filter_id >= prog_cnt) { printf("Invalid program id; program not found in file\n"); - return EXIT_FAILURE; + goto cleanup; + } + + /* load BPF program */ + if (bpf_object__load(obj)) { + printf("ERROR: loading BPF object file failed\n"); + goto cleanup; } - ret = bpf_prog_attach(prog_fd[filter_id], cg_fd, - BPF_CGROUP_INET_SOCK_CREATE, 0); - if (ret < 0) { - printf("Failed to attach prog to cgroup: '%s'\n", - strerror(errno)); - return EXIT_FAILURE; + link = bpf_program__attach_cgroup(progs[filter_id], cg_fd); + if (libbpf_get_error(link)) { + printf("ERROR: bpf_program__attach failed\n"); + link = NULL; + goto cleanup; } - return EXIT_SUCCESS; + err = bpf_link__pin(link, link_pin_path); + if (err < 0) { + printf("ERROR: bpf_link__pin failed: %d\n", err); + goto cleanup; + } + + ret = EXIT_SUCCESS; + +cleanup: + bpf_link__destroy(link); + bpf_object__close(obj); + return ret; } diff --git a/samples/bpf/test_cgrp2_sock2.sh b/samples/bpf/test_cgrp2_sock2.sh index 0f396a86e0cb..6a3dbe642b2b 100755 --- a/samples/bpf/test_cgrp2_sock2.sh +++ b/samples/bpf/test_cgrp2_sock2.sh @@ -1,6 +1,9 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0 +BPFFS=/sys/fs/bpf +LINK_PIN=$BPFFS/test_cgrp2_sock2 + function config_device { ip netns add at_ns0 ip link add veth0 type veth peer name veth0b @@ -21,16 +24,22 @@ function config_cgroup { echo $$ >> /tmp/cgroupv2/foo/cgroup.procs } +function config_bpffs { + if mount | grep $BPFFS > /dev/null; then + echo "bpffs already mounted" + else + echo "bpffs not mounted. Mounting..." + mount -t bpf none $BPFFS + fi +} function attach_bpf { - test_cgrp2_sock2 /tmp/cgroupv2/foo sock_flags_kern.o $1 + ./test_cgrp2_sock2 /tmp/cgroupv2/foo sock_flags_kern.o $1 [ $? -ne 0 ] && exit 1 } function cleanup { - if [ -d /tmp/cgroupv2/foo ]; then - test_cgrp2_sock -d /tmp/cgroupv2/foo - fi + rm -rf $LINK_PIN ip link del veth0b ip netns delete at_ns0 umount /tmp/cgroupv2 @@ -42,6 +51,7 @@ cleanup 2>/dev/null set -e config_device config_cgroup +config_bpffs set +e # @@ -62,6 +72,9 @@ if [ $? -eq 0 ]; then exit 1 fi +rm -rf $LINK_PIN +sleep 1 # Wait for link detach + # # Test 2 - fail ping # |