[PATCH 4/5] IPVS: Allow compilation with CONFIG_SYSCTL disabled
From: Simon Horman <horms@verge.net.au>
Date: 2011-02-01 10:09:13
Also in:
linux-next, lkml, lvs-devel
Subsystem:
ipvs, netfilter, networking [general], the rest · Maintainers:
Simon Horman, Julian Anastasov, Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This is a rather naieve approach to allowing PVS to compile with CONFIG_SYSCTL disabled. I am working on a more comprehensive patch which will remove compilation of all sysctl-related IPVS code when CONFIG_SYSCTL is disabled. Cc: Hans Schillstrom <redacted> Reported-by: Randy Dunlap <redacted> Signed-off-by: Simon Horman <horms@verge.net.au> --- net/netfilter/ipvs/ip_vs_ctl.c | 14 +++++++++----- net/netfilter/ipvs/ip_vs_lblc.c | 20 ++++++++++---------- net/netfilter/ipvs/ip_vs_lblcr.c | 20 ++++++++++---------- 3 files changed, 29 insertions(+), 25 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index d7c2fa8..c73b0c8 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c@@ -3552,10 +3552,15 @@ int __net_init __ip_vs_control_init(struct net *net) tbl[idx++].data = &ipvs->sysctl_nat_icmp_send; +#ifdef CONFIG_SYSCTL ipvs->sysctl_hdr = register_net_sysctl_table(net, net_vs_ctl_path, tbl); - if (ipvs->sysctl_hdr == NULL) - goto err_reg; + if (ipvs->sysctl_hdr == NULL) { + if (!net_eq(net, &init_net)) + kfree(tbl); + goto err_dup; + } +#endif ip_vs_new_estimator(net, ipvs->tot_stats); ipvs->sysctl_tbl = tbl; /* Schedule defense work */
@@ -3563,9 +3568,6 @@ int __net_init __ip_vs_control_init(struct net *net) schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); return 0; -err_reg: - if (!net_eq(net, &init_net)) - kfree(tbl); err_dup: free_percpu(ipvs->cpustats); err_alloc:
@@ -3581,7 +3583,9 @@ static void __net_exit __ip_vs_control_cleanup(struct net *net) ip_vs_kill_estimator(net, ipvs->tot_stats); cancel_delayed_work_sync(&ipvs->defense_work); cancel_work_sync(&ipvs->defense_work.work); +#ifdef CONFIG_SYSCTL unregister_net_sysctl_table(ipvs->sysctl_hdr); +#endif proc_net_remove(net, "ip_vs_stats_percpu"); proc_net_remove(net, "ip_vs_stats"); proc_net_remove(net, "ip_vs");
diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index d5bec33..00b5ffa 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c@@ -554,33 +554,33 @@ static int __net_init __ip_vs_lblc_init(struct net *net) sizeof(vs_vars_table), GFP_KERNEL); if (ipvs->lblc_ctl_table == NULL) - goto err_dup; + return -ENOMEM; } else ipvs->lblc_ctl_table = vs_vars_table; ipvs->sysctl_lblc_expiration = 24*60*60*HZ; ipvs->lblc_ctl_table[0].data = &ipvs->sysctl_lblc_expiration; +#ifdef CONFIG_SYSCTL ipvs->lblc_ctl_header = register_net_sysctl_table(net, net_vs_ctl_path, ipvs->lblc_ctl_table); - if (!ipvs->lblc_ctl_header) - goto err_reg; + if (!ipvs->lblc_ctl_header) { + if (!net_eq(net, &init_net)) + kfree(ipvs->lblc_ctl_table); + return -ENOMEM; + } +#endif return 0; - -err_reg: - if (!net_eq(net, &init_net)) - kfree(ipvs->lblc_ctl_table); - -err_dup: - return -ENOMEM; } static void __net_exit __ip_vs_lblc_exit(struct net *net) { struct netns_ipvs *ipvs = net_ipvs(net); +#ifdef CONFIG_SYSCTL unregister_net_sysctl_table(ipvs->lblc_ctl_header); +#endif if (!net_eq(net, &init_net)) kfree(ipvs->lblc_ctl_table);
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 61ae8cf..bfa25f1 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c@@ -754,33 +754,33 @@ static int __net_init __ip_vs_lblcr_init(struct net *net) sizeof(vs_vars_table), GFP_KERNEL); if (ipvs->lblcr_ctl_table == NULL) - goto err_dup; + return -ENOMEM; } else ipvs->lblcr_ctl_table = vs_vars_table; ipvs->sysctl_lblcr_expiration = 24*60*60*HZ; ipvs->lblcr_ctl_table[0].data = &ipvs->sysctl_lblcr_expiration; +#ifdef CONFIG_SYSCTL ipvs->lblcr_ctl_header = register_net_sysctl_table(net, net_vs_ctl_path, ipvs->lblcr_ctl_table); - if (!ipvs->lblcr_ctl_header) - goto err_reg; + if (!ipvs->lblcr_ctl_header) { + if (!net_eq(net, &init_net)) + kfree(ipvs->lblcr_ctl_table); + return -ENOMEM; + } +#endif return 0; - -err_reg: - if (!net_eq(net, &init_net)) - kfree(ipvs->lblcr_ctl_table);