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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /samples/bpf/sockex2_user.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'samples/bpf/sockex2_user.c')
-rw-r--r-- | samples/bpf/sockex2_user.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/samples/bpf/sockex2_user.c b/samples/bpf/sockex2_user.c new file mode 100644 index 000000000..2c1847133 --- /dev/null +++ b/samples/bpf/sockex2_user.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdio.h> +#include <assert.h> +#include <linux/bpf.h> +#include <bpf/bpf.h> +#include <bpf/libbpf.h> +#include "sock_example.h" +#include <unistd.h> +#include <arpa/inet.h> + +struct pair { + __u64 packets; + __u64 bytes; +}; + +int main(int ac, char **argv) +{ + struct bpf_program *prog; + struct bpf_object *obj; + int map_fd, prog_fd; + char filename[256]; + int i, sock, err; + FILE *f; + + snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); + obj = bpf_object__open_file(filename, NULL); + if (libbpf_get_error(obj)) + return 1; + + prog = bpf_object__next_program(obj, NULL); + bpf_program__set_type(prog, BPF_PROG_TYPE_SOCKET_FILTER); + + err = bpf_object__load(obj); + if (err) + return 1; + + prog_fd = bpf_program__fd(prog); + map_fd = bpf_object__find_map_fd_by_name(obj, "hash_map"); + + sock = open_raw_sock("lo"); + + assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd, + sizeof(prog_fd)) == 0); + + f = popen("ping -4 -c5 localhost", "r"); + (void) f; + + for (i = 0; i < 5; i++) { + int key = 0, next_key; + struct pair value; + + while (bpf_map_get_next_key(map_fd, &key, &next_key) == 0) { + bpf_map_lookup_elem(map_fd, &next_key, &value); + printf("ip %s bytes %lld packets %lld\n", + inet_ntoa((struct in_addr){htonl(next_key)}), + value.bytes, value.packets); + key = next_key; + } + sleep(1); + } + return 0; +} |