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[NET] fib_rules: Convert fib rule notification to use rtnl_notify()

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Adds support for NLM_F_ECHO to simplify the process of identifying
inserted rules with an auto generated priority.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2006-08-15 00:32:48 -07:00 committed by David S. Miller
parent 97676b6b55
commit c17084d21c
1 changed files with 21 additions and 11 deletions
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32
net/core/fib_rules.c
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@ -18,7 +18,8 @@ static LIST_HEAD(rules_ops);
static DEFINE_SPINLOCK(rules_mod_lock);
static void notify_rule_change(int event, struct fib_rule *rule,
struct fib_rules_ops *ops);
struct fib_rules_ops *ops, struct nlmsghdr *nlh,
u32 pid);
static struct fib_rules_ops *lookup_rules_ops(int family)
{
@ -209,7 +210,7 @@ int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
else
list_add_rcu(&rule->list, ops->rules_list);
notify_rule_change(RTM_NEWRULE, rule, ops);
notify_rule_change(RTM_NEWRULE, rule, ops, nlh, NETLINK_CB(skb).pid);
rules_ops_put(ops);
return 0;
@ -266,7 +267,8 @@ int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
list_del_rcu(&rule->list);
synchronize_rcu();
notify_rule_change(RTM_DELRULE, rule, ops);
notify_rule_change(RTM_DELRULE, rule, ops, nlh,
NETLINK_CB(skb).pid);
fib_rule_put(rule);
rules_ops_put(ops);
return 0;
@ -344,18 +346,26 @@ int fib_rules_dump(struct sk_buff *skb, struct netlink_callback *cb, int family)
EXPORT_SYMBOL_GPL(fib_rules_dump);
static void notify_rule_change(int event, struct fib_rule *rule,
struct fib_rules_ops *ops)
struct fib_rules_ops *ops, struct nlmsghdr *nlh,
u32 pid)
{
int size = nlmsg_total_size(sizeof(struct fib_rule_hdr) + 128);
struct sk_buff *skb = alloc_skb(size, GFP_KERNEL);
struct sk_buff *skb;
int err = -ENOBUFS;
skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb == NULL)
netlink_set_err(rtnl, 0, ops->nlgroup, ENOBUFS);
else if (fib_nl_fill_rule(skb, rule, 0, 0, event, 0, ops) < 0) {
goto errout;
err = fib_nl_fill_rule(skb, rule, pid, nlh->nlmsg_seq, event, 0, ops);
if (err < 0) {
kfree_skb(skb);
netlink_set_err(rtnl, 0, ops->nlgroup, EINVAL);
} else
netlink_broadcast(rtnl, skb, 0, ops->nlgroup, GFP_KERNEL);
goto errout;
}
err = rtnl_notify(skb, pid, ops->nlgroup, nlh, GFP_KERNEL);
errout:
if (err < 0)
rtnl_set_sk_err(ops->nlgroup, err);
}
static void attach_rules(struct list_head *rules, struct net_device *dev)