From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexey Dobriyan Subject: [PATCH] igmp: make /proc/net/{igmp,mcfilter} per netns Date: Mon, 8 Sep 2008 05:28:55 +0400 Message-ID: <20080908012855.GC575@x200.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, containers@lists.linux-foundation.org To: davem@davemloft.net Return-path: Received: from gv-out-0910.google.com ([216.239.58.191]:59660 "EHLO gv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751458AbYIHB1L (ORCPT ); Sun, 7 Sep 2008 21:27:11 -0400 Received: by gv-out-0910.google.com with SMTP id e6so81720gvc.37 for ; Sun, 07 Sep 2008 18:27:09 -0700 (PDT) Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: Signed-off-by: Alexey Dobriyan --- net/ipv4/igmp.c | 49 ++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 40 insertions(+), 9 deletions(-) --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -2272,6 +2272,7 @@ int ip_check_mc(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 p #if defined(CONFIG_PROC_FS) struct igmp_mc_iter_state { + struct seq_net_private p; struct net_device *dev; struct in_device *in_dev; }; @@ -2280,11 +2281,12 @@ struct igmp_mc_iter_state { static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq) { + struct net *net = seq_file_net(seq); struct ip_mc_list *im = NULL; struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq); state->in_dev = NULL; - for_each_netdev(&init_net, state->dev) { + for_each_netdev(net, state->dev) { struct in_device *in_dev; in_dev = in_dev_get(state->dev); if (!in_dev) @@ -2405,7 +2407,7 @@ static const struct seq_operations igmp_mc_seq_ops = { static int igmp_mc_seq_open(struct inode *inode, struct file *file) { - return seq_open_private(file, &igmp_mc_seq_ops, + return seq_open_net(inode, file, &igmp_mc_seq_ops, sizeof(struct igmp_mc_iter_state)); } @@ -2414,10 +2416,11 @@ static const struct file_operations igmp_mc_seq_fops = { .open = igmp_mc_seq_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; struct igmp_mcf_iter_state { + struct seq_net_private p; struct net_device *dev; struct in_device *idev; struct ip_mc_list *im; @@ -2427,13 +2430,14 @@ struct igmp_mcf_iter_state { static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq) { + struct net *net = seq_file_net(seq); struct ip_sf_list *psf = NULL; struct ip_mc_list *im = NULL; struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); state->idev = NULL; state->im = NULL; - for_each_netdev(&init_net, state->dev) { + for_each_netdev(net, state->dev) { struct in_device *idev; idev = in_dev_get(state->dev); if (unlikely(idev == NULL)) @@ -2564,7 +2568,7 @@ static const struct seq_operations igmp_mcf_seq_ops = { static int igmp_mcf_seq_open(struct inode *inode, struct file *file) { - return seq_open_private(file, &igmp_mcf_seq_ops, + return seq_open_net(inode, file, &igmp_mcf_seq_ops, sizeof(struct igmp_mcf_iter_state)); } @@ -2573,14 +2577,41 @@ static const struct file_operations igmp_mcf_seq_fops = { .open = igmp_mcf_seq_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; -int __init igmp_mc_proc_init(void) +static int igmp_net_init(struct net *net) { - proc_net_fops_create(&init_net, "igmp", S_IRUGO, &igmp_mc_seq_fops); - proc_net_fops_create(&init_net, "mcfilter", S_IRUGO, &igmp_mcf_seq_fops); + struct proc_dir_entry *pde; + + pde = proc_net_fops_create(net, "igmp", S_IRUGO, &igmp_mc_seq_fops); + if (!pde) + goto out_igmp; + pde = proc_net_fops_create(net, "mcfilter", S_IRUGO, &igmp_mcf_seq_fops); + if (!pde) + goto out_mcfilter; return 0; + +out_mcfilter: + proc_net_remove(net, "igmp"); +out_igmp: + return -ENOMEM; +} + +static void igmp_net_exit(struct net *net) +{ + proc_net_remove(net, "mcfilter"); + proc_net_remove(net, "igmp"); +} + +static struct pernet_operations igmp_net_ops = { + .init = igmp_net_init, + .exit = igmp_net_exit, +}; + +int __init igmp_mc_proc_init(void) +{ + return register_pernet_subsys(&igmp_net_ops); } #endif