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| author | Eric W. Biederman <ebiederm@xmission.com> | 2009-12-03 12:22:55 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-12-03 12:22:55 -0800 |
| commit | e9c5158ac26affd5d8ce006521bdfb7148090e18 (patch) | |
| tree | a8d43fb446a1908175923f4109c977dcb84e4f91 /net/ipv4/fib_rules.c | |
| parent | 3a765edadb28cc736d185f67d1ba6bedcc85f4b9 (diff) | |
| download | lwn-e9c5158ac26affd5d8ce006521bdfb7148090e18.tar.gz lwn-e9c5158ac26affd5d8ce006521bdfb7148090e18.zip | |
net: Allow fib_rule_unregister to batch
Refactor the code so fib_rules_register always takes a template instead
of the actual fib_rules_ops structure that will be used. This is
required for network namespace support so 2 out of the 3 callers already
do this, it allows the error handling to be made common, and it allows
fib_rules_unregister to free the template for hte caller.
Modify fib_rules_unregister to use call_rcu instead of syncrhonize_rcu
to allw multiple namespaces to be cleaned up in the same rcu grace
period.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_rules.c')
| -rw-r--r-- | net/ipv4/fib_rules.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c index 1239ed23cab6..ca2d07b1c706 100644 --- a/net/ipv4/fib_rules.c +++ b/net/ipv4/fib_rules.c @@ -301,13 +301,9 @@ int __net_init fib4_rules_init(struct net *net) int err; struct fib_rules_ops *ops; - ops = kmemdup(&fib4_rules_ops_template, sizeof(*ops), GFP_KERNEL); - if (ops == NULL) - return -ENOMEM; - INIT_LIST_HEAD(&ops->rules_list); - ops->fro_net = net; - - fib_rules_register(ops); + ops = fib_rules_register(&fib4_rules_ops_template, net); + if (IS_ERR(ops)) + return PTR_ERR(ops); err = fib_default_rules_init(ops); if (err < 0) @@ -318,12 +314,10 @@ int __net_init fib4_rules_init(struct net *net) fail: /* also cleans all rules already added */ fib_rules_unregister(ops); - kfree(ops); return err; } void __net_exit fib4_rules_exit(struct net *net) { fib_rules_unregister(net->ipv4.rules_ops); - kfree(net->ipv4.rules_ops); } |