From 22ac03772f2b7cedbd531f588f0b77a77d943585 Mon Sep 17 00:00:00 2001 From: Gao feng Date: Thu, 21 Jun 2012 04:36:47 +0000 Subject: [PATCH] netfilter: nf_ct_generic: add generic_kmemdup_sysctl_table function This patch is a cleanup. It adds generic_kmemdup_sysctl_table to split code into smaller chunks. Yet it prepares introduction of nf_conntrack_proto_*_sysctl.c. Signed-off-by: Gao feng Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_conntrack_proto_generic.c | 39 +++++++++++++++++----- 1 file changed, 31 insertions(+), 8 deletions(-) diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c index d1ed7b44e079..7c11c5444194 100644 --- a/net/netfilter/nf_conntrack_proto_generic.c +++ b/net/netfilter/nf_conntrack_proto_generic.c @@ -135,34 +135,57 @@ static struct ctl_table generic_compat_sysctl_table[] = { #endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */ #endif /* CONFIG_SYSCTL */ -static int generic_init_net(struct net *net, u_int16_t proto) +static int generic_kmemdup_sysctl_table(struct nf_proto_net *pn, + struct nf_generic_net *gn) { - struct nf_generic_net *gn = generic_pernet(net); - struct nf_proto_net *pn = (struct nf_proto_net *)gn; - gn->timeout = nf_ct_generic_timeout; #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) { - kfree(pn->ctl_table); - pn->ctl_table = NULL; + 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; +} + struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly = { .l3proto = PF_UNSPEC, -- 2.20.1