diff options
Diffstat (limited to 'net/netfilter/nf_conntrack_proto_generic.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_proto_generic.c | 81 |
1 files changed, 68 insertions, 13 deletions
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c index d8923d54b358..d25f29377648 100644 --- a/net/netfilter/nf_conntrack_proto_generic.c +++ b/net/netfilter/nf_conntrack_proto_generic.c @@ -14,6 +14,11 @@ static unsigned int nf_ct_generic_timeout __read_mostly = 600*HZ; +static inline struct nf_generic_net *generic_pernet(struct net *net) +{ + return &net->ct.nf_ct_proto.generic; +} + static bool generic_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff, struct nf_conntrack_tuple *tuple) @@ -42,7 +47,7 @@ static int generic_print_tuple(struct seq_file *s, static unsigned int *generic_get_timeouts(struct net *net) { - return &nf_ct_generic_timeout; + return &(generic_pernet(net)->timeout); } /* Returns verdict for packet, or -1 for invalid. */ @@ -70,16 +75,18 @@ static bool generic_new(struct nf_conn *ct, const struct sk_buff *skb, #include <linux/netfilter/nfnetlink.h> #include <linux/netfilter/nfnetlink_cttimeout.h> -static int generic_timeout_nlattr_to_obj(struct nlattr *tb[], void *data) +static int generic_timeout_nlattr_to_obj(struct nlattr *tb[], + struct net *net, void *data) { unsigned int *timeout = data; + struct nf_generic_net *gn = generic_pernet(net); if (tb[CTA_TIMEOUT_GENERIC_TIMEOUT]) *timeout = ntohl(nla_get_be32(tb[CTA_TIMEOUT_GENERIC_TIMEOUT])) * HZ; else { /* Set default generic timeout. */ - *timeout = nf_ct_generic_timeout; + *timeout = gn->timeout; } return 0; @@ -106,11 +113,9 @@ generic_timeout_nla_policy[CTA_TIMEOUT_GENERIC_MAX+1] = { #endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */ #ifdef CONFIG_SYSCTL -static struct ctl_table_header *generic_sysctl_header; static struct ctl_table generic_sysctl_table[] = { { .procname = "nf_conntrack_generic_timeout", - .data = &nf_ct_generic_timeout, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, @@ -121,7 +126,6 @@ static struct ctl_table generic_sysctl_table[] = { static struct ctl_table generic_compat_sysctl_table[] = { { .procname = "ip_conntrack_generic_timeout", - .data = &nf_ct_generic_timeout, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, @@ -131,6 +135,62 @@ static struct ctl_table generic_compat_sysctl_table[] = { #endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */ #endif /* CONFIG_SYSCTL */ +static int generic_kmemdup_sysctl_table(struct nf_proto_net *pn, + struct nf_generic_net *gn) +{ +#ifdef CONFIG_SYSCTL + pn->ctl_table = kmemdup(generic_sysctl_table, + sizeof(generic_sysctl_table), + GFP_KERNEL); + if (!pn->ctl_table) + return -ENOMEM; + + pn->ctl_table[0].data = &gn->timeout; +#endif + return 0; +} + +static int generic_kmemdup_compat_sysctl_table(struct nf_proto_net *pn, + struct nf_generic_net *gn) +{ +#ifdef CONFIG_SYSCTL +#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT + pn->ctl_compat_table = kmemdup(generic_compat_sysctl_table, + sizeof(generic_compat_sysctl_table), + GFP_KERNEL); + if (!pn->ctl_compat_table) + return -ENOMEM; + + pn->ctl_compat_table[0].data = &gn->timeout; +#endif +#endif + return 0; +} + +static int generic_init_net(struct net *net, u_int16_t proto) +{ + int ret; + struct nf_generic_net *gn = generic_pernet(net); + struct nf_proto_net *pn = &gn->pn; + + gn->timeout = nf_ct_generic_timeout; + + ret = generic_kmemdup_compat_sysctl_table(pn, gn); + if (ret < 0) + return ret; + + ret = generic_kmemdup_sysctl_table(pn, gn); + if (ret < 0) + nf_ct_kfree_compat_sysctl_table(pn); + + return ret; +} + +static struct nf_proto_net *generic_get_net_proto(struct net *net) +{ + return &net->ct.nf_ct_proto.generic.pn; +} + struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly = { .l3proto = PF_UNSPEC, @@ -151,11 +211,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly = .nla_policy = generic_timeout_nla_policy, }, #endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */ -#ifdef CONFIG_SYSCTL - .ctl_table_header = &generic_sysctl_header, - .ctl_table = generic_sysctl_table, -#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT - .ctl_compat_table = generic_compat_sysctl_table, -#endif -#endif + .init_net = generic_init_net, + .get_net_proto = generic_get_net_proto, }; |