Re: [PATCH] net/mac80211/mesh_plink: Convert timers to use
From: Johannes Berg
Date: Thu Oct 05 2017 - 02:47:55 EST
On Wed, 2017-10-04 at 17:49 -0700, Kees Cook wrote:
> In preparation for unconditionally passing the struct timer_list
> pointer to all timer callbacks, switch to using the new timer_setup()
> and from_timer() to pass the timer pointer explicitly. This requires
> adding a pointer back to the sta_info since container_of() can't
> resolve the sta_info.
The subject seems to be lacking something ... :-)
> This requires commit 686fef928bba ("timer: Prepare to change timer
> callback argument type") in v4.14-rc3, but should be otherwise
I still can't apply that because that's not in net-next right now.
> static inline void mesh_plink_timer_set(struct sta_info *sta, u32
> sta->mesh->plink_timer.expires = jiffies +
> - sta->mesh->plink_timer.data = (unsigned long) sta;
> - sta->mesh->plink_timer.function = mesh_plink_timer;
> + sta->mesh->plink_sta = sta;
> + sta->mesh->plink_timer.function =
> sta->mesh->plink_timeout = timeout;
Wouldn't it be better to convert this to timer_setup() now?
That add_timer() should probably also be mod_timer() anyway?
> diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
> index 69615016d5bf..5e5de9455e4e 100644
> --- a/net/mac80211/sta_info.c
> +++ b/net/mac80211/sta_info.c
> @@ -332,7 +332,7 @@ struct sta_info *sta_info_alloc(struct
> ieee80211_sub_if_data *sdata,
> if (ieee80211_vif_is_mesh(&sdata->vif) &&
> - init_timer(&sta->mesh->plink_timer);
> + timer_setup(&sta->mesh->plink_timer, NULL,
> sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
You just have to make mesh_plink_timer() non-static, put a prototype
into mesh.h and then you can use the proper timer_setup() here with the
Also, the sta->mesh->plink_sta assignment should be here I'd say, no
point rewriting it all the time.
I guess you were shooting for minimal, and I suppose we can do the
cleanups later too ...