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83 lines
2.4 KiB
Diff
83 lines
2.4 KiB
Diff
From: Felix Fietkau <nbd@openwrt.org>
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Date: Mon, 24 Nov 2014 18:09:03 +0100
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Subject: [PATCH] mac80211: copy chandef from AP vif to VLANs
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Fixes a crash in nl80211_send_chandef, introduced in
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commit c12bc4885f4b3bab0ed779c69d5d7e3223fa5003
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"mac80211: return the vif's chandef in ieee80211_cfg_get_channel()"
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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---
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--- a/net/mac80211/chan.c
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+++ b/net/mac80211/chan.c
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@@ -932,6 +932,21 @@ ieee80211_vif_chanctx_reservation_comple
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}
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}
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+static void
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+ieee80211_vif_update_chandef(struct ieee80211_sub_if_data *sdata,
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+ const struct cfg80211_chan_def *chandef)
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+{
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+ struct ieee80211_sub_if_data *vlan;
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+
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+ sdata->vif.bss_conf.chandef = *chandef;
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+
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+ if (sdata->vif.type != NL80211_IFTYPE_AP)
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+ return;
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+
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+ list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
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+ vlan->vif.bss_conf.chandef = *chandef;
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+}
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+
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static int
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ieee80211_vif_use_reserved_reassign(struct ieee80211_sub_if_data *sdata)
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{
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@@ -994,7 +1009,7 @@ ieee80211_vif_use_reserved_reassign(stru
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if (sdata->vif.bss_conf.chandef.width != sdata->reserved_chandef.width)
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changed = BSS_CHANGED_BANDWIDTH;
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- sdata->vif.bss_conf.chandef = sdata->reserved_chandef;
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+ ieee80211_vif_update_chandef(sdata, &sdata->reserved_chandef);
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if (changed)
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ieee80211_bss_info_change_notify(sdata, changed);
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@@ -1336,7 +1351,7 @@ static int ieee80211_vif_use_reserved_sw
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sdata->reserved_chandef.width)
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changed = BSS_CHANGED_BANDWIDTH;
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- sdata->vif.bss_conf.chandef = sdata->reserved_chandef;
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+ ieee80211_vif_update_chandef(sdata, &sdata->reserved_chandef);
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if (changed)
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ieee80211_bss_info_change_notify(sdata,
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changed);
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@@ -1507,7 +1522,7 @@ int ieee80211_vif_use_channel(struct iee
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goto out;
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}
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- sdata->vif.bss_conf.chandef = *chandef;
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+ ieee80211_vif_update_chandef(sdata, chandef);
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ret = ieee80211_assign_vif_chanctx(sdata, ctx);
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if (ret) {
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@@ -1649,7 +1664,7 @@ int ieee80211_vif_change_bandwidth(struc
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break;
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}
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- sdata->vif.bss_conf.chandef = *chandef;
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+ ieee80211_vif_update_chandef(sdata, chandef);
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ieee80211_recalc_chanctx_chantype(local, ctx);
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--- a/net/mac80211/iface.c
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+++ b/net/mac80211/iface.c
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@@ -520,6 +520,7 @@ int ieee80211_do_open(struct wireless_de
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sdata->vif.cab_queue = master->vif.cab_queue;
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memcpy(sdata->vif.hw_queue, master->vif.hw_queue,
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sizeof(sdata->vif.hw_queue));
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+ sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef;
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break;
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}
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case NL80211_IFTYPE_AP:
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