Instead of piggybacking on test_sockmap_listen, introduce test_sockmap_redir especially for sockmap redirection tests.
Suggested-by: Jiayuan Chen mrpre@163.com Acked-by: John Fastabend john.fastabend@gmail.com Signed-off-by: Michal Luczaj mhal@rbox.co --- .../selftests/bpf/progs/test_sockmap_redir.c | 68 ++++++++++++++++++++++ 1 file changed, 68 insertions(+)
diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_redir.c b/tools/testing/selftests/bpf/progs/test_sockmap_redir.c new file mode 100644 index 0000000000000000000000000000000000000000..34d9f4f2f0a2e638c6e05cfa9f19971bd36c11ea --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_sockmap_redir.c @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> +#include "bpf_misc.h" + +SEC(".maps") struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} nop_map, sock_map; + +SEC(".maps") struct { + __uint(type, BPF_MAP_TYPE_SOCKHASH); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} nop_hash, sock_hash; + +SEC(".maps") struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __uint(max_entries, 2); + __type(key, int); + __type(value, unsigned int); +} verdict_map; + +/* Set by user space */ +int redirect_type; +int redirect_flags; + +#define redirect_map(__data) \ + _Generic((__data), \ + struct __sk_buff * : bpf_sk_redirect_map, \ + struct sk_msg_md * : bpf_msg_redirect_map \ + )((__data), &sock_map, (__u32){0}, redirect_flags) + +#define redirect_hash(__data) \ + _Generic((__data), \ + struct __sk_buff * : bpf_sk_redirect_hash, \ + struct sk_msg_md * : bpf_msg_redirect_hash \ + )((__data), &sock_hash, &(__u32){0}, redirect_flags) + +#define DEFINE_PROG(__type, __param) \ +SEC("sk_" XSTR(__type)) \ +int prog_ ## __type ## _verdict(__param data) \ +{ \ + unsigned int *count; \ + int verdict; \ + \ + if (redirect_type == BPF_MAP_TYPE_SOCKMAP) \ + verdict = redirect_map(data); \ + else if (redirect_type == BPF_MAP_TYPE_SOCKHASH) \ + verdict = redirect_hash(data); \ + else \ + verdict = redirect_type - __MAX_BPF_MAP_TYPE; \ + \ + count = bpf_map_lookup_elem(&verdict_map, &verdict); \ + if (count) \ + (*count)++; \ + \ + return verdict; \ +} + +DEFINE_PROG(skb, struct __sk_buff *); +DEFINE_PROG(msg, struct sk_msg_md *); + +char _license[] SEC("license") = "GPL";