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netfilter: ctnetlink: support individual atomic-get-and-reset of counters 

This allows to use the get operation to atomically get-and-reset
counters.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2011-12-14 13:01:32 +01:00
parent 35dba1d7f3
commit c4042a339f
1 changed files with 11 additions and 0 deletions
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11
net/netfilter/nf_conntrack_netlink.c
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@ -1015,6 +1015,17 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb,
if (err < 0)
goto out;
if (NFNL_MSG_TYPE(nlh->nlmsg_type) == IPCTNL_MSG_CT_GET_CTRZERO) {
struct nf_conn_counter *acct;
acct = nf_conn_acct_find(ct);
if (acct) {
atomic64_set(&acct[IP_CT_DIR_ORIGINAL].bytes, 0);
atomic64_set(&acct[IP_CT_DIR_ORIGINAL].packets, 0);
atomic64_set(&acct[IP_CT_DIR_REPLY].bytes, 0);
atomic64_set(&acct[IP_CT_DIR_REPLY].packets, 0);
}
}
return 0;
free: