diff options
| author | Michal Kazior <michal.kazior@tieto.com> | 2014-06-25 12:35:07 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-06-25 18:06:20 +0200 |
| commit | 71e6195ed2541d764fb0d7ef39cdb2236817116b (patch) | |
| tree | 6b05bec5528281f5cd790905f3e5a21927184218 /net | |
| parent | mac80211: implement multi-vif in-place reservations (diff) | |
| download | linux-71e6195ed2541d764fb0d7ef39cdb2236817116b.tar.xz linux-71e6195ed2541d764fb0d7ef39cdb2236817116b.zip | |
mac80211: make check_combinations() aware of chanctx reservation
The ieee80211_check_combinations() computes
radar_detect accordingly depending on chanctx
reservation status.
This makes it possible to use the function for
channel_switch validation.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/util.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 1b42aa16ec03..ea79668c2e5f 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2933,6 +2933,35 @@ void ieee80211_recalc_dtim(struct ieee80211_local *local, ps->dtim_count = dtim_count; } +static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, + struct ieee80211_chanctx *ctx) +{ + struct ieee80211_sub_if_data *sdata; + u8 radar_detect = 0; + + lockdep_assert_held(&local->chanctx_mtx); + + if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) + return 0; + + list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) + if (sdata->reserved_radar_required) + radar_detect |= BIT(sdata->reserved_chandef.width); + + /* + * An in-place reservation context should not have any assigned vifs + * until it replaces the other context. + */ + WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && + !list_empty(&ctx->assigned_vifs)); + + list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) + if (sdata->radar_required) + radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); + + return radar_detect; +} + int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, const struct cfg80211_chan_def *chandef, enum ieee80211_chanctx_mode chanmode, @@ -2976,8 +3005,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, list_for_each_entry(ctx, &local->chanctx_list, list) { if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) continue; - if (ctx->conf.radar_enabled) - radar_detect |= BIT(ctx->conf.def.width); + radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { num_different_channels++; continue; @@ -3039,8 +3067,7 @@ int ieee80211_max_num_channels(struct ieee80211_local *local) num_different_channels++; - if (ctx->conf.radar_enabled) - radar_detect |= BIT(ctx->conf.def.width); + radar_detect |= ieee80211_chanctx_radar_detect(local, ctx); } list_for_each_entry_rcu(sdata, &local->interfaces, list) |