tools/tcpcong: Reduce code redundancy #5122
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1: Ports that do not meet the conditions in function "entry_state_update_func" will not be stored in the "start_ipv4" or "start_ipv6", and the "ret_state_update_func" function will not obtain values, so there is no need to perform port filtering again. 2: Sock_store can be directly deleted in function "ret_func". Signed-off-by: Feng Yang <[email protected]>
kknjh
requested review from
brendangregg,
davemarchevsky and
goldshtn
as code owners
| } | ||
| start_ipv6.delete(&key); | ||
| } | ||
| SOCK_STORE_DEL |
Collaborator
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How about the following prog?
KRETFUNC_PROBE(tcp_fastretrans_alert, struct sock *sk)
{
return ret_state_update_func(sk);
}
Contributor
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if is_support_kfunc:
bpf_text += kfunc_program
bpf_text = bpf_text.replace('SOCK_STORE_DEF', '')
bpf_text = bpf_text.replace('SOCK_STORE_ADD', '')
bpf_text = bpf_text.replace('SOCK_STORE_DEL', '')
else:
bpf_text += kprobe_program
bpf_text = bpf_text.replace('SOCK_STORE_DEF',
'BPF_HASH(sock_store, process_key_t, struct sock *);')
bpf_text = bpf_text.replace('SOCK_STORE_ADD',
'sock_store.update(&key, &sk);')
bpf_text = bpf_text.replace('SOCK_STORE_DEL',
'sock_store.delete(&key);')
It does not use SOCK_STORE, so it does not affect
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Okay, I see. Indeed this is the case.
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1: Ports that do not meet the conditions in function "entry_state_update_func" will not be stored in the "start_ipv4" or "start_ipv6", and the "ret_state_update_func" function will not obtain values, so there is no need to perform port filtering again.
2: Sock_store can be directly deleted in function "ret_func".