Message ID | 20180823084813.5727-1-johannes@sipsolutions.net (mailing list archive) |
---|---|
State | Accepted |
Delegated to: | Johannes Berg |
Headers | show |
Series | netlink: add nl_set_extack_cookie_u64() | expand |
From: Johannes Berg <johannes@sipsolutions.net> Date: Thu, 23 Aug 2018 10:48:13 +0200 > From: Johannes Berg <johannes.berg@intel.com> > > Add a helper function nl_set_extack_cookie_u64() to use a u64 as > the netlink extended ACK cookie, to avoid having to open-code it > in any users of the cookie. > > A u64 should be sufficient for most subsystems though we allow > for up to 20 bytes right now. This also matches the cookies in > nl80211 where I intend to use this. > > Signed-off-by: Johannes Berg <johannes.berg@intel.com> Feel free to merge this in your wireless tree since the first user will be there. Acked-by: David S. Miller <davem@davemloft.net>
On Thu, 2018-08-23 at 08:45 -0700, David Miller wrote: > From: Johannes Berg <johannes@sipsolutions.net> > Date: Thu, 23 Aug 2018 10:48:13 +0200 > > > From: Johannes Berg <johannes.berg@intel.com> > > > > Add a helper function nl_set_extack_cookie_u64() to use a u64 as > > the netlink extended ACK cookie, to avoid having to open-code it > > in any users of the cookie. > > > > A u64 should be sufficient for most subsystems though we allow > > for up to 20 bytes right now. This also matches the cookies in > > nl80211 where I intend to use this. > > > > Signed-off-by: Johannes Berg <johannes.berg@intel.com> > > Feel free to merge this in your wireless tree since the first > user will be there. > > Acked-by: David S. Miller <davem@davemloft.net> Will do, thanks. johannes
diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 71f121b66ca8..dc3c21dc4ba2 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -110,6 +110,15 @@ struct netlink_ext_ack { } \ } while (0) +static inline void nl_set_extack_cookie_u64(struct netlink_ext_ack *extack, + u64 cookie) +{ + u64 __cookie = cookie; + + memcpy(extack->cookie, &__cookie, sizeof(__cookie)); + extack->cookie_len = sizeof(__cookie); +} + extern void netlink_kernel_release(struct sock *sk); extern int __netlink_change_ngroups(struct sock *sk, unsigned int groups); extern int netlink_change_ngroups(struct sock *sk, unsigned int groups);