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| author | Thomas Graf <tgraf@suug.ch> | 2006-08-15 00:32:48 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-22 14:54:51 -0700 |
| commit | c17084d21c18497b506bd28b82d964bc9e6c424b (patch) | |
| tree | 2c8c32dfc2b1535b2f9edf6cb70ec1a86c48c0f0 /net/core/fib_rules.c | |
| parent | 97676b6b5538b3e059d33b8338e7d5cc41c5f1f1 (diff) | |
| download | linux-c17084d21c18497b506bd28b82d964bc9e6c424b.tar.gz linux-c17084d21c18497b506bd28b82d964bc9e6c424b.tar.bz2 linux-c17084d21c18497b506bd28b82d964bc9e6c424b.zip | |
[NET] fib_rules: Convert fib rule notification to use rtnl_notify()
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>
Diffstat (limited to 'net/core/fib_rules.c')
| -rw-r--r-- | net/core/fib_rules.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index 873b04d5df81..7b2e9bb1a605 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -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 @@ skip: 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) |