diff options
author | Florian Westphal <fw@strlen.de> | 2019-01-16 00:03:43 +0300 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-01-18 17:02:34 +0300 |
commit | b884fa46177659166ab6a9fd87640b9cd5f04fe7 (patch) | |
tree | 69dc0e3a30493b4a628776709178642fe0572fa3 /net/netfilter/nf_conntrack_proto_tcp.c | |
parent | 303e0c5589592e4f623bfcaf4292a1ed816328ad (diff) | |
download | linux-b884fa46177659166ab6a9fd87640b9cd5f04fe7.tar.xz |
netfilter: conntrack: unify sysctl handling
Due to historical reasons, all l4 trackers register their own
sysctls.
This leads to copy&pasted boilerplate code, that does exactly same
thing, just with different data structure.
Place all of this in a single file.
This allows to remove the various ctl_table pointers from the ct_netns
structure and reduces overall code size.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nf_conntrack_proto_tcp.c')
-rw-r--r-- | net/netfilter/nf_conntrack_proto_tcp.c | 116 |
1 files changed, 1 insertions, 115 deletions
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 32aac9a835d4..422bdedac0ed 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -1387,120 +1387,6 @@ static const struct nla_policy tcp_timeout_nla_policy[CTA_TIMEOUT_TCP_MAX+1] = { }; #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ -#ifdef CONFIG_SYSCTL -static struct ctl_table tcp_sysctl_table[] = { - { - .procname = "nf_conntrack_tcp_timeout_syn_sent", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_syn_recv", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_established", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_fin_wait", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_close_wait", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_last_ack", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_time_wait", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_close", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_max_retrans", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_timeout_unacknowledged", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec_jiffies, - }, - { - .procname = "nf_conntrack_tcp_loose", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "nf_conntrack_tcp_be_liberal", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { - .procname = "nf_conntrack_tcp_max_retrans", - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - { } -}; -#endif /* CONFIG_SYSCTL */ - -static int tcp_kmemdup_sysctl_table(struct nf_proto_net *pn, - struct nf_tcp_net *tn) -{ -#ifdef CONFIG_SYSCTL - if (pn->ctl_table) - return 0; - - pn->ctl_table = kmemdup(tcp_sysctl_table, - sizeof(tcp_sysctl_table), - GFP_KERNEL); - if (!pn->ctl_table) - return -ENOMEM; - - pn->ctl_table[0].data = &tn->timeouts[TCP_CONNTRACK_SYN_SENT]; - pn->ctl_table[1].data = &tn->timeouts[TCP_CONNTRACK_SYN_RECV]; - pn->ctl_table[2].data = &tn->timeouts[TCP_CONNTRACK_ESTABLISHED]; - pn->ctl_table[3].data = &tn->timeouts[TCP_CONNTRACK_FIN_WAIT]; - pn->ctl_table[4].data = &tn->timeouts[TCP_CONNTRACK_CLOSE_WAIT]; - pn->ctl_table[5].data = &tn->timeouts[TCP_CONNTRACK_LAST_ACK]; - pn->ctl_table[6].data = &tn->timeouts[TCP_CONNTRACK_TIME_WAIT]; - pn->ctl_table[7].data = &tn->timeouts[TCP_CONNTRACK_CLOSE]; - pn->ctl_table[8].data = &tn->timeouts[TCP_CONNTRACK_RETRANS]; - pn->ctl_table[9].data = &tn->timeouts[TCP_CONNTRACK_UNACK]; - pn->ctl_table[10].data = &tn->tcp_loose; - pn->ctl_table[11].data = &tn->tcp_be_liberal; - pn->ctl_table[12].data = &tn->tcp_max_retrans; -#endif - return 0; -} - static int tcp_init_net(struct net *net) { struct nf_tcp_net *tn = nf_tcp_pernet(net); @@ -1521,7 +1407,7 @@ static int tcp_init_net(struct net *net) tn->tcp_max_retrans = nf_ct_tcp_max_retrans; } - return tcp_kmemdup_sysctl_table(pn, tn); + return 0; } static struct nf_proto_net *tcp_get_net_proto(struct net *net) |