diff options
author | Florian Westphal <fw@strlen.de> | 2018-12-18 23:04:47 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-12-21 00:51:48 +0100 |
commit | d912dec124288553c734e25fef3ecfef92f894db (patch) | |
tree | 92cd98cf71cf63d5b1ad2b85936e302cf087617b /net | |
parent | 4a65798a94089f31883eee705f580e4b2d734ecf (diff) | |
download | linux-d912dec124288553c734e25fef3ecfef92f894db.tar.bz2 |
netfilter: conntrack: merge acct and helper sysctl table with main one
Needless copy&paste, just handle all in one. Next patch will handle
acct and timestamp, which have similar functions.
Intentionally leaves cruft behind, will be cleaned up in a followup
patch.
The obsolete sysctl pointers in netns_ct struct are left in place and
removed in a single change, as changes to netns trigger rebuild of
almost all files.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r-- | net/netfilter/nf_conntrack_acct.c | 65 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_helper.c | 64 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_standalone.c | 21 |
3 files changed, 22 insertions, 128 deletions
diff --git a/net/netfilter/nf_conntrack_acct.c b/net/netfilter/nf_conntrack_acct.c index a7ad0e19e0de..89c58946ec61 100644 --- a/net/netfilter/nf_conntrack_acct.c +++ b/net/netfilter/nf_conntrack_acct.c @@ -25,83 +25,20 @@ static bool nf_ct_acct __read_mostly; module_param_named(acct, nf_ct_acct, bool, 0644); MODULE_PARM_DESC(acct, "Enable connection tracking flow accounting."); -#ifdef CONFIG_SYSCTL -static struct ctl_table acct_sysctl_table[] = { - { - .procname = "nf_conntrack_acct", - .data = &init_net.ct.sysctl_acct, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - {} -}; -#endif /* CONFIG_SYSCTL */ - static const struct nf_ct_ext_type acct_extend = { .len = sizeof(struct nf_conn_acct), .align = __alignof__(struct nf_conn_acct), .id = NF_CT_EXT_ACCT, }; -#ifdef CONFIG_SYSCTL -static int nf_conntrack_acct_init_sysctl(struct net *net) -{ - struct ctl_table *table; - - table = kmemdup(acct_sysctl_table, sizeof(acct_sysctl_table), - GFP_KERNEL); - if (!table) - goto out; - - table[0].data = &net->ct.sysctl_acct; - - /* Don't export sysctls to unprivileged users */ - if (net->user_ns != &init_user_ns) - table[0].procname = NULL; - - net->ct.acct_sysctl_header = register_net_sysctl(net, "net/netfilter", - table); - if (!net->ct.acct_sysctl_header) { - pr_err("can't register to sysctl\n"); - goto out_register; - } - return 0; - -out_register: - kfree(table); -out: - return -ENOMEM; -} - -static void nf_conntrack_acct_fini_sysctl(struct net *net) -{ - struct ctl_table *table; - - table = net->ct.acct_sysctl_header->ctl_table_arg; - unregister_net_sysctl_table(net->ct.acct_sysctl_header); - kfree(table); -} -#else -static int nf_conntrack_acct_init_sysctl(struct net *net) -{ - return 0; -} - -static void nf_conntrack_acct_fini_sysctl(struct net *net) -{ -} -#endif - int nf_conntrack_acct_pernet_init(struct net *net) { net->ct.sysctl_acct = nf_ct_acct; - return nf_conntrack_acct_init_sysctl(net); + return 0; } void nf_conntrack_acct_pernet_fini(struct net *net) { - nf_conntrack_acct_fini_sysctl(net); } int nf_conntrack_acct_init(void) diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c index e24b762ffa1d..8b6fab94501d 100644 --- a/net/netfilter/nf_conntrack_helper.c +++ b/net/netfilter/nf_conntrack_helper.c @@ -42,67 +42,6 @@ module_param_named(nf_conntrack_helper, nf_ct_auto_assign_helper, bool, 0644); MODULE_PARM_DESC(nf_conntrack_helper, "Enable automatic conntrack helper assignment (default 0)"); -#ifdef CONFIG_SYSCTL -static struct ctl_table helper_sysctl_table[] = { - { - .procname = "nf_conntrack_helper", - .data = &init_net.ct.sysctl_auto_assign_helper, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, - {} -}; - -static int nf_conntrack_helper_init_sysctl(struct net *net) -{ - struct ctl_table *table; - - table = kmemdup(helper_sysctl_table, sizeof(helper_sysctl_table), - GFP_KERNEL); - if (!table) - goto out; - - table[0].data = &net->ct.sysctl_auto_assign_helper; - - /* Don't export sysctls to unprivileged users */ - if (net->user_ns != &init_user_ns) - table[0].procname = NULL; - - net->ct.helper_sysctl_header = - register_net_sysctl(net, "net/netfilter", table); - - if (!net->ct.helper_sysctl_header) { - pr_err("nf_conntrack_helper: can't register to sysctl.\n"); - goto out_register; - } - return 0; - -out_register: - kfree(table); -out: - return -ENOMEM; -} - -static void nf_conntrack_helper_fini_sysctl(struct net *net) -{ - struct ctl_table *table; - - table = net->ct.helper_sysctl_header->ctl_table_arg; - unregister_net_sysctl_table(net->ct.helper_sysctl_header); - kfree(table); -} -#else -static int nf_conntrack_helper_init_sysctl(struct net *net) -{ - return 0; -} - -static void nf_conntrack_helper_fini_sysctl(struct net *net) -{ -} -#endif /* CONFIG_SYSCTL */ - /* Stupid hash, but collision free for the default registrations of the * helpers currently in the kernel. */ static unsigned int helper_hash(const struct nf_conntrack_tuple *tuple) @@ -537,12 +476,11 @@ int nf_conntrack_helper_pernet_init(struct net *net) { net->ct.auto_assign_helper_warned = false; net->ct.sysctl_auto_assign_helper = nf_ct_auto_assign_helper; - return nf_conntrack_helper_init_sysctl(net); + return 0; } void nf_conntrack_helper_pernet_fini(struct net *net) { - nf_conntrack_helper_fini_sysctl(net); } int nf_conntrack_helper_init(void) diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c index f9fa825ddc62..9e2d9d5d824d 100644 --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c @@ -539,6 +539,8 @@ enum nf_ct_sysctl_index { NF_SYSCTL_CT_CHECKSUM, NF_SYSCTL_CT_LOG_INVALID, NF_SYSCTL_CT_EXPECT_MAX, + NF_SYSCTL_CT_ACCT, + NF_SYSCTL_CT_HELPER, }; static struct ctl_table nf_ct_sysctl_table[] = { @@ -586,6 +588,20 @@ static struct ctl_table nf_ct_sysctl_table[] = { .mode = 0644, .proc_handler = proc_dointvec, }, + [NF_SYSCTL_CT_ACCT] = { + .procname = "nf_conntrack_acct", + .data = &init_net.ct.sysctl_acct, + .maxlen = sizeof(unsigned int), + .mode = 0644, + .proc_handler = proc_dointvec, + }, + [NF_SYSCTL_CT_HELPER] = { + .procname = "nf_conntrack_helper", + .data = &init_net.ct.sysctl_auto_assign_helper, + .maxlen = sizeof(unsigned int), + .mode = 0644, + .proc_handler = proc_dointvec, + }, { } }; @@ -614,8 +630,11 @@ static int nf_conntrack_standalone_init_sysctl(struct net *net) table[NF_SYSCTL_CT_LOG_INVALID].data = &net->ct.sysctl_log_invalid; /* Don't export sysctls to unprivileged users */ - if (net->user_ns != &init_user_ns) + if (net->user_ns != &init_user_ns) { table[NF_SYSCTL_CT_MAX].procname = NULL; + table[NF_SYSCTL_CT_ACCT].procname = NULL; + table[NF_SYSCTL_CT_HELPER].procname = NULL; + } if (!net_eq(&init_net, net)) table[NF_SYSCTL_CT_BUCKETS].mode = 0444; |