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| author | Daniel T. Lee <danieltimlee@gmail.com> | 2023-08-18 11:01:18 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-08-22 00:39:10 +0200 |
| commit | 8dc80551463197ec79ce0966ec2b5bd700042614 (patch) | |
| tree | 978a0c87bfc6deec1432b848410b9986720f40cf | |
| parent | samples/bpf: fix broken map lookup probe (diff) | |
| download | linux-8dc80551463197ec79ce0966ec2b5bd700042614.tar.xz linux-8dc80551463197ec79ce0966ec2b5bd700042614.zip | |
samples/bpf: refactor syscall tracing programs using BPF_KSYSCALL macro
This commit refactors the syscall tracing programs by adopting the
BPF_KSYSCALL macro. This change aims to enhance the clarity and
simplicity of the BPF programs by reducing the complexity of argument
parsing from pt_regs.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20230818090119.477441-9-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | samples/bpf/test_map_in_map.bpf.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/samples/bpf/test_map_in_map.bpf.c b/samples/bpf/test_map_in_map.bpf.c index 1883559e5977..9f030f9c4e1b 100644 --- a/samples/bpf/test_map_in_map.bpf.c +++ b/samples/bpf/test_map_in_map.bpf.c @@ -103,19 +103,15 @@ static __always_inline int do_inline_hash_lookup(void *inner_map, u32 port) return result ? *result : -ENOENT; } -SEC("kprobe/__sys_connect") -int trace_sys_connect(struct pt_regs *ctx) +SEC("ksyscall/connect") +int BPF_KSYSCALL(trace_sys_connect, unsigned int fd, struct sockaddr_in6 *in6, int addrlen) { - struct sockaddr_in6 *in6; u16 test_case, port, dst6[8]; - int addrlen, ret, inline_ret, ret_key = 0; + int ret, inline_ret, ret_key = 0; u32 port_key; void *outer_map, *inner_map; bool inline_hash = false; - in6 = (struct sockaddr_in6 *)PT_REGS_PARM2_CORE(ctx); - addrlen = (int)PT_REGS_PARM3_CORE(ctx); - if (addrlen != sizeof(*in6)) return 0; |