diff options
| -rw-r--r-- | net/ipv6/addrconf.c | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 3c3425ee6a2b..cd2d7d0fb558 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -442,6 +442,8 @@ static int inet6_netconf_msgsize_devconf(int type) if (type == -1 || type == NETCONFA_MC_FORWARDING) size += nla_total_size(4); #endif + if (type == -1 || type == NETCONFA_PROXY_NEIGH) + size += nla_total_size(4); return size; } @@ -475,6 +477,10 @@ static int inet6_netconf_fill_devconf(struct sk_buff *skb, int ifindex, devconf->mc_forwarding) < 0) goto nla_put_failure; #endif + if ((type == -1 || type == NETCONFA_PROXY_NEIGH) && + nla_put_s32(skb, NETCONFA_PROXY_NEIGH, devconf->proxy_ndp) < 0) + goto nla_put_failure; + return nlmsg_end(skb, nlh); nla_put_failure: @@ -509,6 +515,7 @@ errout: static const struct nla_policy devconf_ipv6_policy[NETCONFA_MAX+1] = { [NETCONFA_IFINDEX] = { .len = sizeof(int) }, [NETCONFA_FORWARDING] = { .len = sizeof(int) }, + [NETCONFA_PROXY_NEIGH] = { .len = sizeof(int) }, }; static int inet6_netconf_get_devconf(struct sk_buff *in_skb, @@ -4728,6 +4735,46 @@ int addrconf_sysctl_disable(struct ctl_table *ctl, int write, return ret; } +static +int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + int *valp = ctl->data; + int ret; + int old, new; + + old = *valp; + ret = proc_dointvec(ctl, write, buffer, lenp, ppos); + new = *valp; + + if (write && old != new) { + struct net *net = ctl->extra2; + + if (!rtnl_trylock()) + return restart_syscall(); + + if (valp == &net->ipv6.devconf_dflt->proxy_ndp) + inet6_netconf_notify_devconf(net, NETCONFA_PROXY_NEIGH, + NETCONFA_IFINDEX_DEFAULT, + net->ipv6.devconf_dflt); + else if (valp == &net->ipv6.devconf_all->proxy_ndp) + inet6_netconf_notify_devconf(net, NETCONFA_PROXY_NEIGH, + NETCONFA_IFINDEX_ALL, + net->ipv6.devconf_all); + else { + struct inet6_dev *idev = ctl->extra1; + + inet6_netconf_notify_devconf(net, NETCONFA_PROXY_NEIGH, + idev->dev->ifindex, + &idev->cnf); + } + rtnl_unlock(); + } + + return ret; +} + + static struct addrconf_sysctl_table { struct ctl_table_header *sysctl_header; @@ -4914,7 +4961,7 @@ static struct addrconf_sysctl_table .data = &ipv6_devconf.proxy_ndp, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec, + .proc_handler = addrconf_sysctl_proxy_ndp, }, { .procname = "accept_source_route", |