summaryrefslogtreecommitdiff
path: root/net/mac80211
diff options
context:
space:
mode:
authorKees Cook <keescook@chromium.org>2017-10-05 10:39:10 -0700
committerJohannes Berg <johannes.berg@intel.com>2017-10-06 11:47:52 +0200
commit4c02d62fa37a05254a87575c7d430819f77bd6c9 (patch)
tree046e98fd9c69e40bd3453540599883469d342c6d /net/mac80211
parent753d179ad001b25425beb977d00f2531540e7d42 (diff)
net/mac80211/mesh_plink: Convert timers to use timer_setup()
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. Cc: Johannes Berg <johannes@sipsolutions.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/mesh.h1
-rw-r--r--net/mac80211/mesh_plink.c10
-rw-r--r--net/mac80211/sta_info.c4
-rw-r--r--net/mac80211/sta_info.h2
4 files changed, 10 insertions, 7 deletions
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 7e5f271e3c30..465b7853edc0 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -275,6 +275,7 @@ void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
u8 *hw_addr, struct ieee802_11_elems *ie);
bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
+void mesh_plink_timer(struct timer_list *t);
void mesh_plink_broken(struct sta_info *sta);
u32 mesh_plink_deactivate(struct sta_info *sta);
u32 mesh_plink_open(struct sta_info *sta);
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index dc8e10f87207..e2d00cce3c17 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -603,8 +603,9 @@ out:
ieee80211_mbss_info_change_notify(sdata, changed);
}
-static void mesh_plink_timer(unsigned long data)
+void mesh_plink_timer(struct timer_list *t)
{
+ struct mesh_sta *mesh = from_timer(mesh, t, plink_timer);
struct sta_info *sta;
u16 reason = 0;
struct ieee80211_sub_if_data *sdata;
@@ -616,7 +617,7 @@ static void mesh_plink_timer(unsigned long data)
* del_timer_sync() this timer after having made sure
* it cannot be readded (by deleting the plink.)
*/
- sta = (struct sta_info *) data;
+ sta = mesh->plink_sta;
if (sta->sdata->local->quiescing)
return;
@@ -696,11 +697,8 @@ static void mesh_plink_timer(unsigned long data)
static inline void mesh_plink_timer_set(struct sta_info *sta, u32 timeout)
{
- sta->mesh->plink_timer.expires = jiffies + msecs_to_jiffies(timeout);
- sta->mesh->plink_timer.data = (unsigned long) sta;
- sta->mesh->plink_timer.function = mesh_plink_timer;
sta->mesh->plink_timeout = timeout;
- add_timer(&sta->mesh->plink_timer);
+ mod_timer(&sta->mesh->plink_timer, jiffies + msecs_to_jiffies(timeout));
}
static bool llid_in_use(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index ffcd25c4908c..9673e157bf8f 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -329,10 +329,12 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
sta->mesh = kzalloc(sizeof(*sta->mesh), gfp);
if (!sta->mesh)
goto free;
+ sta->mesh->plink_sta = sta;
spin_lock_init(&sta->mesh->plink_lock);
if (ieee80211_vif_is_mesh(&sdata->vif) &&
!sdata->u.mesh.user_mpm)
- init_timer(&sta->mesh->plink_timer);
+ timer_setup(&sta->mesh->plink_timer, mesh_plink_timer,
+ 0);
sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
}
#endif
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index a35c964f6217..5c54acd10562 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -344,6 +344,7 @@ DECLARE_EWMA(mesh_fail_avg, 20, 8)
* @plink_state: peer link state
* @plink_timeout: timeout of peer link
* @plink_timer: peer link watch timer
+ * @plink_sta: peer link watch timer's sta_info
* @t_offset: timing offset relative to this host
* @t_offset_setpoint: reference timing offset of this sta to be used when
* calculating clockdrift
@@ -356,6 +357,7 @@ DECLARE_EWMA(mesh_fail_avg, 20, 8)
*/
struct mesh_sta {
struct timer_list plink_timer;
+ struct sta_info *plink_sta;
s64 t_offset;
s64 t_offset_setpoint;