diff options
author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2013-03-05 23:42:06 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2013-03-06 20:40:53 (GMT) |
commit | 7a6742003f3c8650c4d3f9edcae1cf8a5cdda276 (patch) | |
tree | 26b37b324a5efe81c42af647ed701107e3c05077 /net/ipv4/devinet.c | |
parent | 753f993911b32e479b4fab5d228dc07c11d1e7e7 (diff) | |
download | linux-7a6742003f3c8650c4d3f9edcae1cf8a5cdda276.tar.xz |
netconf: add the handler to dump entries
It's useful to be able to get the initial state of all entries. The patch adds
the support for IPv4 and IPv6.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/devinet.c')
-rw-r--r-- | net/ipv4/devinet.c | 70 |
1 files changed, 69 insertions, 1 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index f678507..af57bba 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1791,6 +1791,74 @@ errout: return err; } +static int inet_netconf_dump_devconf(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct net *net = sock_net(skb->sk); + int h, s_h; + int idx, s_idx; + struct net_device *dev; + struct in_device *in_dev; + struct hlist_head *head; + + s_h = cb->args[0]; + s_idx = idx = cb->args[1]; + + for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { + idx = 0; + head = &net->dev_index_head[h]; + rcu_read_lock(); + hlist_for_each_entry_rcu(dev, head, index_hlist) { + if (idx < s_idx) + goto cont; + in_dev = __in_dev_get_rcu(dev); + if (!in_dev) + goto cont; + + if (inet_netconf_fill_devconf(skb, dev->ifindex, + &in_dev->cnf, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + RTM_NEWNETCONF, + NLM_F_MULTI, + -1) <= 0) { + rcu_read_unlock(); + goto done; + } +cont: + idx++; + } + rcu_read_unlock(); + } + if (h == NETDEV_HASHENTRIES) { + if (inet_netconf_fill_devconf(skb, NETCONFA_IFINDEX_ALL, + net->ipv4.devconf_all, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + RTM_NEWNETCONF, NLM_F_MULTI, + -1) <= 0) + goto done; + else + h++; + } + if (h == NETDEV_HASHENTRIES + 1) { + if (inet_netconf_fill_devconf(skb, NETCONFA_IFINDEX_DEFAULT, + net->ipv4.devconf_dflt, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + RTM_NEWNETCONF, NLM_F_MULTI, + -1) <= 0) + goto done; + else + h++; + } +done: + cb->args[0] = h; + cb->args[1] = idx; + + return skb->len; +} + #ifdef CONFIG_SYSCTL static void devinet_copy_dflt_conf(struct net *net, int i) @@ -2195,6 +2263,6 @@ void __init devinet_init(void) rtnl_register(PF_INET, RTM_DELADDR, inet_rtm_deladdr, NULL, NULL); rtnl_register(PF_INET, RTM_GETADDR, NULL, inet_dump_ifaddr, NULL); rtnl_register(PF_INET, RTM_GETNETCONF, inet_netconf_get_devconf, - NULL, NULL); + inet_netconf_dump_devconf, NULL); } |