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mac80211: remove support for IFF_PROMISC
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This support is essentially useless as typically networks are encrypted,
frames will be filtered by hardware, and rate scaling will be done with
the intended recipient in mind. For real monitoring of the network, the
monitor mode support should be used instead.

Removing it removes a lot of corner cases.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Johannes Berg committed Apr 24, 2015
1 parent ebd82b3 commit df14046
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Showing 43 changed files with 63 additions and 204 deletions.
7 changes: 1 addition & 6 deletions drivers/net/wireless/adm8211.c
Original file line number Diff line number Diff line change
Expand Up @@ -1353,12 +1353,7 @@ static void adm8211_configure_filter(struct ieee80211_hw *dev,

new_flags = 0;

if (*total_flags & FIF_PROMISC_IN_BSS) {
new_flags |= FIF_PROMISC_IN_BSS;
priv->nar |= ADM8211_NAR_PR;
priv->nar &= ~ADM8211_NAR_MM;
mc_filter[1] = mc_filter[0] = ~0;
} else if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) {
if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) {
new_flags |= FIF_ALLMULTI;
priv->nar &= ~ADM8211_NAR_PR;
priv->nar |= ADM8211_NAR_MM;
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2 changes: 1 addition & 1 deletion drivers/net/wireless/at76c50x-usb.h
Original file line number Diff line number Diff line change
Expand Up @@ -447,7 +447,7 @@ struct at76_priv {
int mac80211_registered;
};

#define AT76_SUPPORTED_FILTERS FIF_PROMISC_IN_BSS
#define AT76_SUPPORTED_FILTERS 0

#define SCAN_POLL_INTERVAL (HZ / 4)

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3 changes: 1 addition & 2 deletions drivers/net/wireless/ath/ar5523/ar5523.c
Original file line number Diff line number Diff line change
Expand Up @@ -1319,8 +1319,7 @@ static void ar5523_bss_info_changed(struct ieee80211_hw *hw,

}

#define AR5523_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
FIF_ALLMULTI | \
#define AR5523_SUPPORTED_FILTERS (FIF_ALLMULTI | \
FIF_FCSFAIL | \
FIF_OTHER_BSS)

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4 changes: 1 addition & 3 deletions drivers/net/wireless/ath/ath10k/mac.c
Original file line number Diff line number Diff line change
Expand Up @@ -773,7 +773,6 @@ static int ath10k_monitor_recalc(struct ath10k *ar)
lockdep_assert_held(&ar->conf_mutex);

should_start = ar->monitor ||
ar->filter_flags & FIF_PROMISC_IN_BSS ||
test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

ath10k_dbg(ar, ATH10K_DBG_MAC,
Expand Down Expand Up @@ -3493,8 +3492,7 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw,
* FIXME: Has to be verified.
*/
#define SUPPORTED_FILTERS \
(FIF_PROMISC_IN_BSS | \
FIF_ALLMULTI | \
(FIF_ALLMULTI | \
FIF_CONTROL | \
FIF_PSPOLL | \
FIF_OTHER_BSS | \
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1 change: 0 additions & 1 deletion drivers/net/wireless/ath/ath5k/ath5k.h
Original file line number Diff line number Diff line change
Expand Up @@ -1280,7 +1280,6 @@ struct ath5k_hw {

DECLARE_BITMAP(status, 4);
#define ATH_STAT_INVALID 0 /* disable hardware accesses */
#define ATH_STAT_PROMISC 1
#define ATH_STAT_LEDSOFT 2 /* enable LED gpio status */
#define ATH_STAT_STARTED 3 /* opened & irqs enabled */
#define ATH_STAT_RESET 4 /* hw reset */
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15 changes: 2 additions & 13 deletions drivers/net/wireless/ath/ath5k/mac80211-ops.c
Original file line number Diff line number Diff line change
Expand Up @@ -369,7 +369,7 @@ ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
unsigned int *new_flags, u64 multicast)
{
#define SUPPORTED_FIF_FLAGS \
(FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | \
(FIF_ALLMULTI | FIF_FCSFAIL | \
FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \
FIF_BCN_PRBRESP_PROMISC)

Expand All @@ -393,16 +393,6 @@ ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
(AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST |
AR5K_RX_FILTER_MCAST);

if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
if (*new_flags & FIF_PROMISC_IN_BSS)
__set_bit(ATH_STAT_PROMISC, ah->status);
else
__clear_bit(ATH_STAT_PROMISC, ah->status);
}

if (test_bit(ATH_STAT_PROMISC, ah->status))
rfilt |= AR5K_RX_FILTER_PROM;

/* Note, AR5K_RX_FILTER_MCAST is already enabled */
if (*new_flags & FIF_ALLMULTI) {
mfilt[0] = ~0;
Expand All @@ -418,8 +408,7 @@ ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
if ((*new_flags & FIF_BCN_PRBRESP_PROMISC) || (ah->nvifs > 1))
rfilt |= AR5K_RX_FILTER_BEACON;

/* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not
* set we should only pass on control frames for this
/* FIF_CONTROL doc says we should only pass on control frames for this
* station. This needs testing. I believe right now this
* enables *all* control frames, which is OK.. but
* but we should see if we can improve on granularity */
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3 changes: 1 addition & 2 deletions drivers/net/wireless/ath/ath9k/htc_drv_main.c
Original file line number Diff line number Diff line change
Expand Up @@ -1238,8 +1238,7 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
}

#define SUPPORTED_FILTERS \
(FIF_PROMISC_IN_BSS | \
FIF_ALLMULTI | \
(FIF_ALLMULTI | \
FIF_CONTROL | \
FIF_PSPOLL | \
FIF_OTHER_BSS | \
Expand Down
9 changes: 1 addition & 8 deletions drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
Original file line number Diff line number Diff line change
Expand Up @@ -872,14 +872,7 @@ u32 ath9k_htc_calcrxfilter(struct ath9k_htc_priv *priv)
if (priv->rxfilter & FIF_PROBE_REQ)
rfilt |= ATH9K_RX_FILTER_PROBEREQ;

/*
* Set promiscuous mode when FIF_PROMISC_IN_BSS is enabled for station
* mode interface or when in monitor mode. AP mode does not need this
* since it receives all in-BSS frames anyway.
*/
if (((ah->opmode != NL80211_IFTYPE_AP) &&
(priv->rxfilter & FIF_PROMISC_IN_BSS)) ||
ah->is_monitoring)
if (ah->is_monitoring)
rfilt |= ATH9K_RX_FILTER_PROM;

if (priv->rxfilter & FIF_CONTROL)
Expand Down
3 changes: 1 addition & 2 deletions drivers/net/wireless/ath/ath9k/main.c
Original file line number Diff line number Diff line change
Expand Up @@ -1442,8 +1442,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
}

#define SUPPORTED_FILTERS \
(FIF_PROMISC_IN_BSS | \
FIF_ALLMULTI | \
(FIF_ALLMULTI | \
FIF_CONTROL | \
FIF_PSPOLL | \
FIF_OTHER_BSS | \
Expand Down
5 changes: 0 additions & 5 deletions drivers/net/wireless/ath/ath9k/recv.c
Original file line number Diff line number Diff line change
Expand Up @@ -392,11 +392,6 @@ u32 ath_calcrxfilter(struct ath_softc *sc)
if (sc->cur_chan->rxfilter & FIF_PROBE_REQ)
rfilt |= ATH9K_RX_FILTER_PROBEREQ;

/*
* Set promiscuous mode when FIF_PROMISC_IN_BSS is enabled for station
* mode interface or when in monitor mode. AP mode does not need this
* since it receives all in-BSS frames anyway.
*/
if (sc->sc_ah->is_monitoring)
rfilt |= ATH9K_RX_FILTER_PROM;

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3 changes: 1 addition & 2 deletions drivers/net/wireless/ath/carl9170/fw.c
Original file line number Diff line number Diff line change
Expand Up @@ -310,8 +310,7 @@ static int carl9170_fw(struct ar9170 *ar, const __u8 *data, size_t len)
if (SUPP(CARL9170FW_RX_FILTER)) {
ar->fw.rx_filter = true;
ar->rx_filter_caps = FIF_FCSFAIL | FIF_PLCPFAIL |
FIF_CONTROL | FIF_PSPOLL | FIF_OTHER_BSS |
FIF_PROMISC_IN_BSS;
FIF_CONTROL | FIF_PSPOLL | FIF_OTHER_BSS;
}

if (SUPP(CARL9170FW_HW_COUNTERS))
Expand Down
7 changes: 3 additions & 4 deletions drivers/net/wireless/ath/carl9170/main.c
Original file line number Diff line number Diff line change
Expand Up @@ -1011,9 +1011,8 @@ static void carl9170_op_configure_filter(struct ieee80211_hw *hw,
if (multicast != ar->cur_mc_hash)
WARN_ON(carl9170_update_multicast(ar, multicast));

if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
ar->sniffer_enabled = !!(*new_flags &
(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS));
if (changed_flags & FIF_OTHER_BSS) {
ar->sniffer_enabled = !!(*new_flags & FIF_OTHER_BSS);

WARN_ON(carl9170_set_operating_mode(ar));
}
Expand All @@ -1033,7 +1032,7 @@ static void carl9170_op_configure_filter(struct ieee80211_hw *hw,
if (!(*new_flags & FIF_PSPOLL))
rx_filter |= CARL9170_RX_FILTER_CTL_PSPOLL;

if (!(*new_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))) {
if (!(*new_flags & FIF_OTHER_BSS)) {
rx_filter |= CARL9170_RX_FILTER_OTHER_RA;
rx_filter |= CARL9170_RX_FILTER_DECRY_FAIL;
}
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8 changes: 2 additions & 6 deletions drivers/net/wireless/b43/main.c
Original file line number Diff line number Diff line change
Expand Up @@ -3131,8 +3131,6 @@ static void b43_adjust_opmode(struct b43_wldev *dev)
ctl |= B43_MACCTL_KEEP_BAD;
if (wl->filter_flags & FIF_PLCPFAIL)
ctl |= B43_MACCTL_KEEP_BADPLCP;
if (wl->filter_flags & FIF_PROMISC_IN_BSS)
ctl |= B43_MACCTL_PROMISC;
if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
ctl |= B43_MACCTL_BEACPROMISC;

Expand Down Expand Up @@ -4310,16 +4308,14 @@ static void b43_op_configure_filter(struct ieee80211_hw *hw,
goto out_unlock;
}

*fflags &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
*fflags &= FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
FIF_OTHER_BSS |
FIF_BCN_PRBRESP_PROMISC;

changed &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
changed &= FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
Expand Down
8 changes: 2 additions & 6 deletions drivers/net/wireless/b43legacy/main.c
Original file line number Diff line number Diff line change
Expand Up @@ -2055,8 +2055,6 @@ static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev)
ctl |= B43legacy_MACCTL_KEEP_BAD;
if (wl->filter_flags & FIF_PLCPFAIL)
ctl |= B43legacy_MACCTL_KEEP_BADPLCP;
if (wl->filter_flags & FIF_PROMISC_IN_BSS)
ctl |= B43legacy_MACCTL_PROMISC;
if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
ctl |= B43legacy_MACCTL_BEACPROMISC;

Expand Down Expand Up @@ -2922,16 +2920,14 @@ static void b43legacy_op_configure_filter(struct ieee80211_hw *hw,
}

spin_lock_irqsave(&wl->irq_lock, flags);
*fflags &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
*fflags &= FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
FIF_OTHER_BSS |
FIF_BCN_PRBRESP_PROMISC;

changed &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
changed &= FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
Expand Down
5 changes: 1 addition & 4 deletions drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
Original file line number Diff line number Diff line change
Expand Up @@ -41,8 +41,7 @@
#define BRCMS_FLUSH_TIMEOUT 500 /* msec */

/* Flags we support */
#define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
FIF_ALLMULTI | \
#define MAC_FILTERS (FIF_ALLMULTI | \
FIF_FCSFAIL | \
FIF_CONTROL | \
FIF_OTHER_BSS | \
Expand Down Expand Up @@ -743,8 +742,6 @@ brcms_ops_configure_filter(struct ieee80211_hw *hw,
changed_flags &= MAC_FILTERS;
*total_flags &= MAC_FILTERS;

if (changed_flags & FIF_PROMISC_IN_BSS)
brcms_dbg_info(core, "FIF_PROMISC_IN_BSS\n");
if (changed_flags & FIF_ALLMULTI)
brcms_dbg_info(core, "FIF_ALLMULTI\n");
if (changed_flags & FIF_FCSFAIL)
Expand Down
2 changes: 1 addition & 1 deletion drivers/net/wireless/brcm80211/brcmsmac/main.c
Original file line number Diff line number Diff line change
Expand Up @@ -3571,7 +3571,7 @@ void brcms_c_mac_promisc(struct brcms_c_info *wlc, uint filter_flags)

wlc->filter_flags = filter_flags;

if (filter_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
if (filter_flags & FIF_OTHER_BSS)
promisc_bits |= MCTL_PROMISC;

if (filter_flags & FIF_BCN_PRBRESP_PROMISC)
Expand Down
10 changes: 3 additions & 7 deletions drivers/net/wireless/cw1200/sta.c
Original file line number Diff line number Diff line change
Expand Up @@ -578,28 +578,24 @@ void cw1200_configure_filter(struct ieee80211_hw *dev,
{
struct cw1200_common *priv = dev->priv;
bool listening = !!(*total_flags &
(FIF_PROMISC_IN_BSS |
FIF_OTHER_BSS |
(FIF_OTHER_BSS |
FIF_BCN_PRBRESP_PROMISC |
FIF_PROBE_REQ));

*total_flags &= FIF_PROMISC_IN_BSS |
FIF_OTHER_BSS |
*total_flags &= FIF_OTHER_BSS |
FIF_FCSFAIL |
FIF_BCN_PRBRESP_PROMISC |
FIF_PROBE_REQ;

down(&priv->scan.lock);
mutex_lock(&priv->conf_mutex);

priv->rx_filter.promiscuous = (*total_flags & FIF_PROMISC_IN_BSS)
? 1 : 0;
priv->rx_filter.promiscuous = 0;
priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS |
FIF_PROBE_REQ)) ? 1 : 0;
priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0;
priv->disable_beacon_filter = !(*total_flags &
(FIF_BCN_PRBRESP_PROMISC |
FIF_PROMISC_IN_BSS |
FIF_PROBE_REQ));
if (priv->listening != listening) {
priv->listening = listening;
Expand Down
4 changes: 2 additions & 2 deletions drivers/net/wireless/iwlegacy/3945-mac.c
Original file line number Diff line number Diff line change
Expand Up @@ -3048,7 +3048,7 @@ il3945_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags,
*total_flags);

CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
CHK(FIF_OTHER_BSS, RXON_FILTER_PROMISC_MSK);
CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);

Expand All @@ -3074,7 +3074,7 @@ il3945_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
* filters into the device.
*/
*total_flags &=
FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
FIF_OTHER_BSS | FIF_ALLMULTI |
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
}

Expand Down
4 changes: 2 additions & 2 deletions drivers/net/wireless/iwlegacy/4965-mac.c
Original file line number Diff line number Diff line change
Expand Up @@ -6166,7 +6166,7 @@ il4965_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags,
*total_flags);

CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
CHK(FIF_OTHER_BSS, RXON_FILTER_PROMISC_MSK);
/* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
Expand All @@ -6192,7 +6192,7 @@ il4965_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
* filters into the device.
*/
*total_flags &=
FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
FIF_OTHER_BSS | FIF_ALLMULTI |
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
}

Expand Down
4 changes: 2 additions & 2 deletions drivers/net/wireless/iwlwifi/dvm/mac80211.c
Original file line number Diff line number Diff line change
Expand Up @@ -1061,7 +1061,7 @@ static void iwlagn_configure_filter(struct ieee80211_hw *hw,
IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
changed_flags, *total_flags);

CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
CHK(FIF_OTHER_BSS, RXON_FILTER_PROMISC_MSK);
/* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
Expand All @@ -1088,7 +1088,7 @@ static void iwlagn_configure_filter(struct ieee80211_hw *hw,
* since we currently do not support programming multicast
* filters into the device.
*/
*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
}

Expand Down
7 changes: 2 additions & 5 deletions drivers/net/wireless/libertas_tf/main.c
Original file line number Diff line number Diff line change
Expand Up @@ -439,7 +439,7 @@ static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
return mc_count;
}

#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)
#define SUPPORTED_FIF_FLAGS FIF_ALLMULTI
static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *new_flags,
Expand All @@ -458,10 +458,7 @@ static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
return;
}

if (*new_flags & (FIF_PROMISC_IN_BSS))
priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
else
priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
if (*new_flags & (FIF_ALLMULTI) ||
multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
Expand Down
2 changes: 0 additions & 2 deletions drivers/net/wireless/mac80211_hwsim.c
Original file line number Diff line number Diff line change
Expand Up @@ -1554,8 +1554,6 @@ static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
wiphy_debug(hw->wiphy, "%s\n", __func__);

data->rx_filter = 0;
if (*total_flags & FIF_PROMISC_IN_BSS)
data->rx_filter |= FIF_PROMISC_IN_BSS;
if (*total_flags & FIF_ALLMULTI)
data->rx_filter |= FIF_ALLMULTI;

Expand Down
2 changes: 1 addition & 1 deletion drivers/net/wireless/mwl8k.c
Original file line number Diff line number Diff line change
Expand Up @@ -5192,7 +5192,7 @@ mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
priv->sniffer_enabled = true;
}

*total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
*total_flags &= FIF_ALLMULTI |
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
FIF_OTHER_BSS;

Expand Down
3 changes: 1 addition & 2 deletions drivers/net/wireless/p54/fwio.c
Original file line number Diff line number Diff line change
Expand Up @@ -351,8 +351,7 @@ int p54_setup_mac(struct p54_common *priv)
* "TRANSPARENT and PROMISCUOUS are mutually exclusive"
* STSW45X0C LMAC API - page 12
*/
if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
(priv->filter_flags & FIF_OTHER_BSS)) &&
if (priv->filter_flags & FIF_OTHER_BSS &&
(mode != P54_FILTER_TYPE_PROMISCUOUS))
mode |= P54_FILTER_TYPE_TRANSPARENT;
} else {
Expand Down
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