diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2024-03-28 08:27:49 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-04-03 09:59:38 +0100 |
| commit | 464eb03c4a7cfb32cb3324249193cf6bb5b35152 (patch) | |
| tree | 450903621dce4c85b8d7cde96a74dc75e5b0235d /include/linux | |
| parent | 84c41dcaae11ecd51d8514e2a9aaea4016cc5827 (diff) | |
rtnetlink: add guard for RTNL
The new guard/scoped_gard can be useful for the RTNL as well,
so add a guard definition for it. It gets used like
{
guard(rtnl)();
// RTNL held until end of block
}
or
scoped_guard(rtnl) {
// RTNL held in this block
}
as with any other guard/scoped_guard.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/rtnetlink.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h index cdfc897f1e3c..a7da7dfc06a2 100644 --- a/include/linux/rtnetlink.h +++ b/include/linux/rtnetlink.h @@ -7,6 +7,7 @@ #include <linux/netdevice.h> #include <linux/wait.h> #include <linux/refcount.h> +#include <linux/cleanup.h> #include <uapi/linux/rtnetlink.h> extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo); @@ -46,6 +47,8 @@ extern int rtnl_is_locked(void); extern int rtnl_lock_killable(void); extern bool refcount_dec_and_rtnl_lock(refcount_t *r); +DEFINE_LOCK_GUARD_0(rtnl, rtnl_lock(), rtnl_unlock()) + extern wait_queue_head_t netdev_unregistering_wq; extern atomic_t dev_unreg_count; extern struct rw_semaphore pernet_ops_rwsem; |