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netns: ipmr: store netns in struct mfc_cache

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

mfc_net is assigned at cache allocation and doesn't change during
the rest of the cache entry life.
A new net parameter is added to ipmr_cache_alloc/ipmr_cache_alloc_unres.

This will help to retrieve the current netns around the IPv4 multicast
routing code.

At the moment, all mfc_cache are allocated 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
2009-01-22 04:56:17 +00:00
committed by David S. Miller
parent cf958ae377
commit 5c0a66f5f3
2 changed files with 32 additions and 9 deletions
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15
include/linux/mroute.h
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@@ -193,6 +193,9 @@ struct vif_device
struct mfc_cache
{
struct mfc_cache *next; /* Next entry on cache line */
#ifdef CONFIG_NET_NS
struct net *mfc_net;
#endif
__be32 mfc_mcastgrp; /* Group the entry belongs to */
__be32 mfc_origin; /* Source of packet */
vifi_t mfc_parent; /* Source interface */
@@ -215,6 +218,18 @@ struct mfc_cache
} mfc_un;
};
static inline
struct net *mfc_net(const struct mfc_cache *mfc)
{
return read_pnet(&mfc->mfc_net);
}
static inline
void mfc_net_set(struct mfc_cache *mfc, struct net *net)
{
write_pnet(&mfc->mfc_net, hold_net(net));
}
#define MFC_STATIC 1
#define MFC_NOTIFY 2