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tcp: Namespace-ify sysctl_tcp_stdurg
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
e0a1e5b519
commit
3f4c7c6f6a
4 changed files with 9 additions and 10 deletions
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@ -133,6 +133,7 @@ struct netns_ipv4 {
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int sysctl_tcp_thin_linear_timeouts;
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int sysctl_tcp_slow_start_after_idle;
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int sysctl_tcp_retrans_collapse;
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int sysctl_tcp_stdurg;
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struct inet_timewait_death_row tcp_death_row;
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int sysctl_max_syn_backlog;
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int sysctl_tcp_fastopen;
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@ -243,7 +243,6 @@ void tcp_time_wait(struct sock *sk, int state, int timeo);
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/* sysctl variables for tcp */
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extern int sysctl_tcp_stdurg;
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extern int sysctl_tcp_rfc1337;
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extern int sysctl_tcp_abort_on_overflow;
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extern int sysctl_tcp_max_orphans;
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@ -400,13 +400,6 @@ static struct ctl_table ipv4_table[] = {
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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{
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.procname = "tcp_stdurg",
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.data = &sysctl_tcp_stdurg,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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{
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.procname = "tcp_rfc1337",
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.data = &sysctl_tcp_rfc1337,
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@ -1145,6 +1138,13 @@ static struct ctl_table ipv4_net_table[] = {
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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{
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.procname = "tcp_stdurg",
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.data = &init_net.ipv4.sysctl_tcp_stdurg,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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{ }
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};
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@ -89,7 +89,6 @@ EXPORT_SYMBOL(sysctl_tcp_adv_win_scale);
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/* rfc5961 challenge ack rate limiting */
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int sysctl_tcp_challenge_ack_limit = 1000;
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int sysctl_tcp_stdurg __read_mostly;
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int sysctl_tcp_rfc1337 __read_mostly;
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int sysctl_tcp_max_orphans __read_mostly = NR_FILE;
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int sysctl_tcp_frto __read_mostly = 2;
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@ -5123,7 +5122,7 @@ static void tcp_check_urg(struct sock *sk, const struct tcphdr *th)
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struct tcp_sock *tp = tcp_sk(sk);
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u32 ptr = ntohs(th->urg_ptr);
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if (ptr && !sysctl_tcp_stdurg)
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if (ptr && !sock_net(sk)->ipv4.sysctl_tcp_stdurg)
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ptr--;
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ptr += ntohl(th->seq);
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