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netns: ip6mr: store netns in struct mfc6_cache

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This patch stores into struct mfc6_cache the network namespace each
mfc6_cache belongs to. The new member is mfc6_net.

mfc6_net is assigned at cache allocation and doesn't change during
the rest of the cache entry life.

This will help to retrieve the current netns around the IPv6 multicast
forwarding code.

At the moment, all mfc6_cache are allocated in init_net.

Changelog:
==========
* Use write_pnet()/read_pnet() to set and get mfc6_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 16:22:34 -08:00
committed by David S. Miller
parent 4e16880cb4
commit 58701ad411
2 changed files with 32 additions and 9 deletions
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15
include/linux/mroute6.h
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@ -188,6 +188,9 @@ struct mif_device
struct mfc6_cache
{
struct mfc6_cache *next; /* Next entry on cache line */
#ifdef CONFIG_NET_NS
struct net *mfc6_net;
#endif
struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */
struct in6_addr mf6c_origin; /* Source of packet */
mifi_t mf6c_parent; /* Source interface */
@ -210,6 +213,18 @@ struct mfc6_cache
} mfc_un;
};
static inline
struct net *mfc6_net(const struct mfc6_cache *mfc)
{
return read_pnet(&mfc->mfc6_net);
}
static inline
void mfc6_net_set(struct mfc6_cache *mfc, struct net *net)
{
write_pnet(&mfc->mfc6_net, hold_net(net));
}
#define MFC_STATIC 1
#define MFC_NOTIFY 2