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net/core/filter: fix unused-variable warning

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Building with CONFIG_INET=n will show the warning below:
net/core/filter.c: In function ‘____bpf_getsockopt’:
net/core/filter.c:4048:19: warning: unused variable ‘tp’ [-Wunused-variable]
  struct tcp_sock *tp;
                   ^~
net/core/filter.c:4046:31: warning: unused variable ‘icsk’ [-Wunused-variable]
  struct inet_connection_sock *icsk;
                               ^~~~
Move the variable declarations inside the {} block where they are used.

Fixes: 1e215300f1 ("bpf: add TCP_SAVE_SYN/TCP_SAVED_SYN options for bpf_(set|get)sockopt")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Anders Roxell 2018-09-07 14:50:05 +02:00 committed by Alexei Starovoitov
parent 9d0b3c1f14
commit 1edb6e035e
1 changed files with 3 additions and 2 deletions
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5
net/core/filter.c
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@ -4051,14 +4051,15 @@ static const struct bpf_func_proto bpf_setsockopt_proto = {
BPF_CALL_5(bpf_getsockopt, struct bpf_sock_ops_kern *, bpf_sock,
int, level, int, optname, char *, optval, int, optlen)
{
struct inet_connection_sock *icsk;
struct sock *sk = bpf_sock->sk;
struct tcp_sock *tp;
if (!sk_fullsock(sk))
goto err_clear;
#ifdef CONFIG_INET
if (level == SOL_TCP && sk->sk_prot->getsockopt == tcp_getsockopt) {
struct inet_connection_sock *icsk;
struct tcp_sock *tp;
switch (optname) {
case TCP_CONGESTION:
icsk = inet_csk(sk);