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linux-sg2042
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tcp: Namespace-ify sysctl_tcp_abort_on_overflow 

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2017-10-26 21:55:03 -07:00 committed by David S. Miller
parent 625357aa17
commit 65c9410cf5
4 changed files with 9 additions and 11 deletions
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1
include/net/netns/ipv4.h
View File

@ -135,6 +135,7 @@ struct netns_ipv4 {
int sysctl_tcp_retrans_collapse;
int sysctl_tcp_stdurg;
int sysctl_tcp_rfc1337;
int sysctl_tcp_abort_on_overflow;
struct inet_timewait_death_row tcp_death_row;
int sysctl_max_syn_backlog;
int sysctl_tcp_fastopen;

1
include/net/tcp.h
View File

@ -243,7 +243,6 @@ void tcp_time_wait(struct sock *sk, int state, int timeo);
/* sysctl variables for tcp */
extern int sysctl_tcp_abort_on_overflow;
extern int sysctl_tcp_max_orphans;
extern int sysctl_tcp_fack;
extern int sysctl_tcp_reordering;

14
net/ipv4/sysctl_net_ipv4.c
View File

@ -393,13 +393,6 @@ static struct ctl_table ipv4_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "tcp_abort_on_overflow",
.data = &sysctl_tcp_abort_on_overflow,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "inet_peer_threshold",
.data = &inet_peer_threshold,
@ -1145,6 +1138,13 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "tcp_abort_on_overflow",
.data = &init_net.ipv4.sysctl_tcp_abort_on_overflow,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{ }
};

4
net/ipv4/tcp_minisocks.c
View File

@ -29,8 +29,6 @@
#include <net/xfrm.h>
#include <net/busy_poll.h>
int sysctl_tcp_abort_on_overflow __read_mostly;
static bool tcp_in_window(u32 seq, u32 end_seq, u32 s_win, u32 e_win)
{
if (seq == s_win)
@ -783,7 +781,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
return inet_csk_complete_hashdance(sk, child, req, own_req);
listen_overflow:
if (!sysctl_tcp_abort_on_overflow) {
if (!sock_net(sk)->ipv4.sysctl_tcp_abort_on_overflow) {
inet_rsk(req)->acked = 1;
return NULL;
}