6.14-stable review patch. If anyone has any objections, please let me know.
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From: Alexander Wetzel Alexander@wetzel-home.de
[ Upstream commit 129860044c611008be37f49d04cf41874e3659e6 ]
Count open monitor interfaces regardless of the monitor interface type. The new counter virt_monitors takes over counting interfaces depending on the virtual monitor interface while monitors is used for all active monitor interfaces.
This fixes monitor packet mirroring when using MONITOR_FLAG_ACTIVE or NO_VIRTUAL_MONITOR interfaces.
Fixes: 286e69677065 ("wifi: mac80211: Drop cooked monitor support") Reported-by: Karthikeyan Periyasamy quic_periyasa@quicinc.com Closes: https://lore.kernel.org/r/cc715114-4e3b-619a-49dc-a4878075e1dc@quicinc.com Signed-off-by: Alexander Wetzel Alexander@wetzel-home.de Tested-by: Karthikeyan Periyasamy quic_periyasa@quicinc.com Link: https://patch.msgid.link/20250220094139.61459-1-Alexander@wetzel-home.de Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/mac80211/cfg.c | 5 ++--- net/mac80211/ethtool.c | 2 +- net/mac80211/ieee80211_i.h | 2 +- net/mac80211/iface.c | 22 +++++++++++++--------- net/mac80211/util.c | 3 ++- 5 files changed, 19 insertions(+), 15 deletions(-)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 1ec246133d244..a7aeb37254bbf 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -4370,9 +4370,8 @@ static int ieee80211_cfg_get_channel(struct wiphy *wiphy, if (chanctx_conf) { *chandef = link->conf->chanreq.oper; ret = 0; - } else if (!ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR) && - local->open_count > 0 && - local->open_count == local->monitors && + } else if (local->open_count > 0 && + local->open_count == local->virt_monitors && sdata->vif.type == NL80211_IFTYPE_MONITOR) { *chandef = local->monitor_chanreq.oper; ret = 0; diff --git a/net/mac80211/ethtool.c b/net/mac80211/ethtool.c index 42f7ee142ce3f..0397755a3bd1c 100644 --- a/net/mac80211/ethtool.c +++ b/net/mac80211/ethtool.c @@ -158,7 +158,7 @@ static void ieee80211_get_stats(struct net_device *dev, if (chanctx_conf) channel = chanctx_conf->def.chan; else if (local->open_count > 0 && - local->open_count == local->monitors && + local->open_count == local->virt_monitors && sdata->vif.type == NL80211_IFTYPE_MONITOR) channel = local->monitor_chanreq.oper.chan; else diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index afc6fda6b606b..3d7304ce23e23 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1378,7 +1378,7 @@ struct ieee80211_local { spinlock_t queue_stop_reason_lock;
int open_count; - int monitors, tx_mntrs; + int monitors, virt_monitors, tx_mntrs; /* number of interfaces with corresponding FIF_ flags */ int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, fif_probe_req; diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 5616c0adbe093..768d774d7d1f9 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -582,11 +582,13 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do /* no need to tell driver */ break; case NL80211_IFTYPE_MONITOR: + local->monitors--; + if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) {
- local->monitors--; - if (local->monitors == 0) { + local->virt_monitors--; + if (local->virt_monitors == 0) { local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; } @@ -686,7 +688,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do case NL80211_IFTYPE_AP_VLAN: break; case NL80211_IFTYPE_MONITOR: - if (local->monitors == 0) + if (local->virt_monitors == 0) ieee80211_del_virtual_monitor(local);
ieee80211_recalc_idle(local); @@ -723,7 +725,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do ieee80211_configure_filter(local); ieee80211_hw_config(local, hw_reconf_flags);
- if (local->monitors == local->open_count) + if (local->virt_monitors == local->open_count) ieee80211_add_virtual_monitor(local); }
@@ -982,7 +984,7 @@ static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdat local->hw.wiphy->frag_threshold != (u32)-1) flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED;
- if (local->monitors) + if (local->virt_monitors) flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; } else { flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; @@ -992,7 +994,7 @@ static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdat ieee80211_iftype_supports_hdr_offload(sdata->vif.type)) { flags |= IEEE80211_OFFLOAD_DECAP_ENABLED;
- if (local->monitors && + if (local->virt_monitors && !ieee80211_hw_check(&local->hw, SUPPORTS_CONC_MON_RX_DECAP)) flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED; } else { @@ -1336,20 +1338,22 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) if (res) goto err_stop; } else { - if (local->monitors == 0 && local->open_count == 0) { + if (local->virt_monitors == 0 && local->open_count == 0) { res = ieee80211_add_virtual_monitor(local); if (res) goto err_stop; } - local->monitors++; + local->virt_monitors++;
/* must be before the call to ieee80211_configure_filter */ - if (local->monitors == 1) { + if (local->virt_monitors == 1) { local->hw.conf.flags |= IEEE80211_CONF_MONITOR; hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; } }
+ local->monitors++; + ieee80211_adjust_monitor_flags(sdata, 1); ieee80211_configure_filter(local); ieee80211_recalc_offload(local); diff --git a/net/mac80211/util.c b/net/mac80211/util.c index fdda14c08e2b1..dec6e16b8c7d2 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2156,7 +2156,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
wake_up:
- if (local->monitors == local->open_count && local->monitors > 0) + if (local->virt_monitors > 0 && + local->virt_monitors == local->open_count) ieee80211_add_virtual_monitor(local);
/*