提交 c4835d81 编写于 作者: D Dmitry Eremin-Solenikov

ieee802154: add locking for seq numbers

Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
上级 066fc512
......@@ -35,6 +35,7 @@
#include <net/ieee802154_netdev.h>
static unsigned int ieee802154_seq_num;
static DEFINE_SPINLOCK(ieee802154_seq_lock);
static struct genl_family ieee802154_coordinator_family = {
.id = GENL_ID_GENERATE,
......@@ -57,12 +58,15 @@ static struct sk_buff *ieee802154_nl_create(int flags, u8 req)
{
void *hdr;
struct sk_buff *msg = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
unsigned long f;
if (!msg)
return NULL;
spin_lock_irqsave(&ieee802154_seq_lock, f);
hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
&ieee802154_coordinator_family, flags, req);
spin_unlock_irqrestore(&ieee802154_seq_lock, f);
if (!hdr) {
nlmsg_free(msg);
return NULL;
......
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