ipvs: convert app locks

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We use locks like tcp_app_lock, udp_app_lock,
sctp_app_lock to protect access to the protocol hash tables
from readers in packet context while the application
instances (inc) are [un]registered under global mutex.

As the hash tables are mostly read when conns are
created and bound to app, use RCU for readers and reclaim
app instance after grace period.

Simplify ip_vs_app_inc_get because we use usecnt
only for statistics and rely on module refcounting.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off by: Hans Schillstrom <hans@schillstrom.com>
Signed-off-by: Simon Horman <horms@verge.net.au>

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This commit is contained in:

Julian Anastasov 2013-03-21 11:58:07 +02:00 • committed by Pablo Neira Ayuso

parent 026ace060d

commit 363c97d743

6 changed files with 40 additions and 48 deletions

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4

include/net/ip_vs.h

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27

net/netfilter/ipvs/ip_vs_app.c

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2

net/netfilter/ipvs/ip_vs_ftp.c

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18

net/netfilter/ipvs/ip_vs_proto_sctp.c

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18

net/netfilter/ipvs/ip_vs_proto_tcp.c

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19

net/netfilter/ipvs/ip_vs_proto_udp.c

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