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authorDaniel T. Lee <danieltimlee@gmail.com>2023-08-18 18:01:18 +0900
committerAlexei Starovoitov <ast@kernel.org>2023-08-21 15:39:10 -0700
commit8dc80551463197ec79ce0966ec2b5bd700042614 (patch)
tree978a0c87bfc6deec1432b848410b9986720f40cf /samples/bpf
parentd93a7cf6ca2cfcd7de5d06f753ce8d5e863316ac (diff)
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>
Diffstat (limited to 'samples/bpf')
-rw-r--r--samples/bpf/test_map_in_map.bpf.c10
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;