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authorBenjamin Thery <benjamin.thery@bull.net>2009-01-22 04:56:19 +0000
committerDavid S. Miller <davem@davemloft.net>2009-01-22 13:57:39 -0800
commit1e8fb3b6a4ac6c5e486298d88289038456957545 (patch)
treeff2c02ed95edcf510e553c15c8abd476cdc6d669 /include/net/netns
parent2bb8b26c3ea8bde1943dc5cd4dda2dc9f48fb281 (diff)
downloadop-kernel-dev-1e8fb3b6a4ac6c5e486298d88289038456957545.zip
op-kernel-dev-1e8fb3b6a4ac6c5e486298d88289038456957545.tar.gz
netns: ipmr: declare counter cache_resolve_queue_len per-namespace
Preliminary work to make IPv4 multicast routing netns-aware. Declare variable cache_resolve_queue_len per-namespace: move it into struct netns_ipv4. This variable counts the number of unresolved cache entries queued in the list mfc_unres_queue. This list is kept global to all netns as the number of entries per namespace is limited to 10 (hardcoded in routine ipmr_cache_unresolved). Entries belonging to different namespaces in mfc_unres_queue will be identified by matching the mfc_net member introduced previously in struct mfc_cache. Keeping this list global to all netns, also allows us to keep a single timer (ipmr_expire_timer) to handle their expiration. In some places cache_resolve_queue_len value was tested for arming or deleting the timer. These tests were equivalent to testing mfc_unres_queue value instead and are replaced in this patch. At the moment, cache_resolve_queue_len is only referenced in init_net. Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/netns')
-rw-r--r--include/net/netns/ipv4.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 0b4285a..90b7cd2 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -60,6 +60,7 @@ struct netns_ipv4 {
struct mfc_cache **mfc_cache_array;
struct vif_device *vif_table;
int maxvif;
+ atomic_t cache_resolve_queue_len;
#endif
};
#endif
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