diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2022-06-17 22:36:37 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2022-07-15 11:43:14 +0200 |
| commit | d8675a63518c6148827838058feb7f18403faed1 (patch) | |
| tree | fbdee52aa9f31da2b33ad5804cc4ea76a9a82a24 /net/mac80211/mesh.c | |
| parent | 3d1cc7cdf2e848181398837fe158bf0850d29ee6 (diff) | |
wifi: mac80211: RCU-ify link/link_conf pointers
Since links can be added and removed dynamically, we need to
somehow protect the sdata->link[] and vif->link_conf[] array
pointers from disappearing when accessing them without locks.
RCU-ify the pointers to achieve this, which requires quite a
bit of rework.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/mesh.c')
| -rw-r--r-- | net/mac80211/mesh.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 6160211a7eee..ba4e0921fa5d 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -1056,7 +1056,7 @@ int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) } ieee80211_recalc_dtim(local, sdata); - ieee80211_link_info_change_notify(sdata, 0, changed); + ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed); netif_carrier_on(sdata->dev); return 0; @@ -1080,7 +1080,8 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata) sdata->vif.bss_conf.enable_beacon = false; sdata->beacon_rate_set = false; clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); - ieee80211_link_info_change_notify(sdata, 0, BSS_CHANGED_BEACON_ENABLED); + ieee80211_link_info_change_notify(sdata, &sdata->deflink, + BSS_CHANGED_BEACON_ENABLED); /* remove beacon */ bcn = sdata_dereference(ifmsh->beacon, sdata); @@ -1578,7 +1579,7 @@ static void mesh_bss_info_changed(struct ieee80211_sub_if_data *sdata) if (ieee80211_mesh_rebuild_beacon(sdata)) return; - ieee80211_link_info_change_notify(sdata, 0, changed); + ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed); } void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata) |