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netns: ip6mr: declare mroute_do_assert and mroute_do_pim per-namespace

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Preliminary work to make IPv6 multicast forwarding netns-aware.

Declare IPv6 multicast forwarding variables 'mroute_do_assert' and
'mroute_do_pim' per-namespace in struct netns_ipv6.

At the moment, these variables are only referenced in init_net.

Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Benjamin Thery 2008-12-10 16:28:44 -08:00 committed by David S. Miller
parent 4045e57c19
commit a21f3f997c
2 changed files with 12 additions and 16 deletions
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2
include/net/netns/ipv6.h
View File

@ -61,6 +61,8 @@ struct netns_ipv6 {
struct mif_device *vif6_table;
int maxvif;
atomic_t cache_resolve_queue_len;
int mroute_do_assert;
int mroute_do_pim;
#endif
};
#endif

26
net/ipv6/ip6mr.c
View File

@ -61,13 +61,6 @@ static DEFINE_RWLOCK(mrt_lock);
#define MIF_EXISTS(_net, _idx) ((_net)->ipv6.vif6_table[_idx].dev != NULL)
static int mroute_do_assert; /* Set in PIM assert */
#ifdef CONFIG_IPV6_PIMSM_V2
static int mroute_do_pim;
#else
#define mroute_do_pim 0
#endif
static struct mfc6_cache *mfc_unres_queue; /* Queue of unresolved entries */
/* Special spinlock for queue of unresolved entries */
@ -1306,7 +1299,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, int
int v;
if (get_user(v, (int __user *)optval))
return -EFAULT;
mroute_do_assert = !!v;
init_net.ipv6.mroute_do_assert = !!v;
return 0;
}
@ -1319,10 +1312,10 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, int
v = !!v;
rtnl_lock();
ret = 0;
if (v != mroute_do_pim) {
mroute_do_pim = v;
mroute_do_assert = v;
if (mroute_do_pim)
if (v != init_net.ipv6.mroute_do_pim) {
init_net.ipv6.mroute_do_pim = v;
init_net.ipv6.mroute_do_assert = v;
if (init_net.ipv6.mroute_do_pim)
ret = inet6_add_protocol(&pim6_protocol,
IPPROTO_PIM);
else
@ -1361,11 +1354,11 @@ int ip6_mroute_getsockopt(struct sock *sk, int optname, char __user *optval,
break;
#ifdef CONFIG_IPV6_PIMSM_V2
case MRT6_PIM:
val = mroute_do_pim;
val = init_net.ipv6.mroute_do_pim;
break;
#endif
case MRT6_ASSERT:
val = mroute_do_assert;
val = init_net.ipv6.mroute_do_assert;
break;
default:
return -ENOPROTOOPT;
@ -1553,13 +1546,14 @@ static int ip6_mr_forward(struct sk_buff *skb, struct mfc6_cache *cache)
cache->mfc_un.res.wrong_if++;
true_vifi = ip6mr_find_vif(skb->dev);
if (true_vifi >= 0 && mroute_do_assert &&
if (true_vifi >= 0 && init_net.ipv6.mroute_do_assert &&
/* pimsm uses asserts, when switching from RPT to SPT,
so that we cannot check that packet arrived on an oif.
It is bad, but otherwise we would need to move pretty
large chunk of pimd to kernel. Ough... --ANK
*/
(mroute_do_pim || cache->mfc_un.res.ttls[true_vifi] < 255) &&
(init_net.ipv6.mroute_do_pim ||
cache->mfc_un.res.ttls[true_vifi] < 255) &&
time_after(jiffies,
cache->mfc_un.res.last_assert + MFC_ASSERT_THRESH)) {
cache->mfc_un.res.last_assert = jiffies;