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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2006-09-22 14:43:49 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 15:20:25 -0700
commitfbea49e1e2404baa2d88ab47e2db89e49551b53b (patch)
tree7e11746b350048e04867a9f67b843057428c2ef0 /net
parent62dd93181aaa1d5a501a9cebcb254f44b8a48af7 (diff)
[IPV6] NDISC: Add proxy_ndp sysctl.
We do not always need proxy NDP functionality even we enable forwarding. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/addrconf.c11
-rw-r--r--net/ipv6/ip6_output.c4
-rw-r--r--net/ipv6/ndisc.c8
3 files changed, 21 insertions, 2 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 1e5a296d0a8..825a291d5aa 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -175,6 +175,7 @@ struct ipv6_devconf ipv6_devconf __read_mostly = {
.accept_ra_rt_info_max_plen = 0,
#endif
#endif
+ .proxy_ndp = 0,
};
static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
@@ -205,6 +206,7 @@ static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = {
.accept_ra_rt_info_max_plen = 0,
#endif
#endif
+ .proxy_ndp = 0,
};
/* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */
@@ -3337,6 +3339,7 @@ static void inline ipv6_store_devconf(struct ipv6_devconf *cnf,
array[DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN] = cnf->accept_ra_rt_info_max_plen;
#endif
#endif
+ array[DEVCONF_PROXY_NDP] = cnf->proxy_ndp;
}
/* Maximum length of ifinfomsg attributes */
@@ -3860,6 +3863,14 @@ static struct addrconf_sysctl_table
#endif
#endif
{
+ .ctl_name = NET_IPV6_PROXY_NDP,
+ .procname = "proxy_ndp",
+ .data = &ipv6_devconf.proxy_ndp,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
.ctl_name = 0, /* sentinel */
}
},
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index b2be749d221..66716911962 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -412,7 +412,9 @@ int ip6_forward(struct sk_buff *skb)
return -ETIMEDOUT;
}
- if (pneigh_lookup(&nd_tbl, &hdr->daddr, skb->dev, 0)) {
+ /* XXX: idev->cnf.proxy_ndp? */
+ if (ipv6_devconf.proxy_ndp &&
+ pneigh_lookup(&nd_tbl, &hdr->daddr, skb->dev, 0)) {
int proxied = ip6_forward_proxy_check(skb);
if (proxied > 0)
return ip6_input(skb);
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index ddf038636f0..76517a5f657 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -824,6 +824,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
if (ipv6_chk_acast_addr(dev, &msg->target) ||
(idev->cnf.forwarding &&
+ (ipv6_devconf.proxy_ndp || idev->cnf.proxy_ndp) &&
(pneigh = pneigh_lookup(&nd_tbl,
&msg->target, dev, 0)) != NULL)) {
if (!(NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED) &&
@@ -966,8 +967,13 @@ static void ndisc_recv_na(struct sk_buff *skb)
* has already sent a NA to us.
*/
if (lladdr && !memcmp(lladdr, dev->dev_addr, dev->addr_len) &&
- pneigh_lookup(&nd_tbl, &msg->target, dev, 0))
+ ipv6_devconf.forwarding && ipv6_devconf.proxy_ndp &&
+ pneigh_lookup(&nd_tbl, &msg->target, dev, 0)) {
+ /* XXX: idev->cnf.prixy_ndp */
+ WARN_ON(skb->dst != NULL &&
+ ((struct rt6_info *)skb->dst)->rt6i_idev);
goto out;
+ }
neigh_update(neigh, lladdr,
msg->icmph.icmp6_solicited ? NUD_REACHABLE : NUD_STALE,