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| author | Julian Anastasov <ja@ssi.bg> | 2013-03-22 10:46:37 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-04-02 00:23:47 +0200 |
| commit | 6b6df46663e7aa6f7b1d82435a3488f9b81316b3 (patch) | |
| tree | 72d44c02f38bbe96bc4a468da732abbd23037008 /include/net/ip_vs.h | |
| parent | ipvs: change ip_vs_sched_lock to mutex (diff) | |
| download | linux-6b6df46663e7aa6f7b1d82435a3488f9b81316b3.tar.xz linux-6b6df46663e7aa6f7b1d82435a3488f9b81316b3.zip | |
ipvs: preparations for using rcu in schedulers
Allow schedulers to use rcu_dereference when
returning destination on lookup. The RCU read-side critical
section will allow ip_vs_bind_dest to get dest refcnt as
preparation for the step where destinations will be
deleted without an IP_VS_WAIT_WHILE guard that holds the
packet processing during update.
Add new optional scheduler methods add_dest,
del_dest and upd_dest. For now the methods are called
together with update_service but update_service will be
removed in a following change.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'include/net/ip_vs.h')
| -rw-r--r-- | include/net/ip_vs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index 43886bb282fb..d91385c1b3a2 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -805,6 +805,12 @@ struct ip_vs_scheduler { int (*done_service)(struct ip_vs_service *svc); /* scheduler updating service */ int (*update_service)(struct ip_vs_service *svc); + /* dest is linked */ + int (*add_dest)(struct ip_vs_service *svc, struct ip_vs_dest *dest); + /* dest is unlinked */ + int (*del_dest)(struct ip_vs_service *svc, struct ip_vs_dest *dest); + /* dest is updated */ + int (*upd_dest)(struct ip_vs_service *svc, struct ip_vs_dest *dest); /* selecting a server from the given service */ struct ip_vs_dest* (*schedule)(struct ip_vs_service *svc, |