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[NET]: Make netlink processing routines semi-synchronious (inspired by rtnl) v2

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The code in netfilter/nfnetlink.c and in ./net/netlink/genetlink.c looks
like outdated copy/paste from rtnetlink.c. Push them into sync with the
original.

Changes from v1:
- deleted comment in nfnetlink_rcv_msg by request of Patrick McHardy

Signed-off-by: Denis V. Lunev <[email protected]>
Acked-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Denis V. Lunev 2007-10-10 21:13:32 -07:00 • committed by David S. Miller
commit 3b71535f35
2 changed files with 8 additions and 32 deletions
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15
net/netlink/genetlink.c
View file

@ -22,22 +22,14 @@ struct sock *genl_sock = NULL;
static DEFINE_MUTEX(genl_mutex); /* serialization of message processing */
static void genl_lock(void)
static inline void genl_lock(void)
{
mutex_lock(&genl_mutex);
}
static int genl_trylock(void)
{
return !mutex_trylock(&genl_mutex);
}
static void genl_unlock(void)
static inline void genl_unlock(void)
{
mutex_unlock(&genl_mutex);
if (genl_sock && genl_sock->sk_receive_queue.qlen)
genl_sock->sk_data_ready(genl_sock, 0);
}
#define GENL_FAM_TAB_SIZE 16
@ -483,8 +475,7 @@ static void genl_rcv(struct sock *sk, int len)
unsigned int qlen = 0;
do {
if (genl_trylock())
return;
genl_lock();
qlen = netlink_run_queue(sk, qlen, genl_rcv_msg);
genl_unlock();
} while (qlen && genl_sock && genl_sock->sk_receive_queue.qlen);