1. 30 4月, 2017 19 次提交
  2. 29 4月, 2017 9 次提交
  3. 28 4月, 2017 12 次提交
    • H
      rhashtable: Do not lower max_elems when max_size is zero · 2d2ab658
      Herbert Xu 提交于
      The commit 6d684e54 ("rhashtable: Cap total number of entries
      to 2^31") breaks rhashtable users that do not set max_size.  This
      is because when max_size is zero max_elems is also incorrectly set
      to zero instead of 2^31.
      
      This patch fixes it by only lowering max_elems when max_size is not
      zero.
      
      Fixes: 6d684e54 ("rhashtable: Cap total number of entries to 2^31")
      Reported-by: NFlorian Fainelli <f.fainelli@gmail.com>
      Reported-by: Nkernel test robot <fengguang.wu@intel.com>
      Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2d2ab658
    • A
      cfg80211: add request id to cfg80211_sched_scan_*() api · b34939b9
      Arend Van Spriel 提交于
      Have proper request id filled in the SCHED_SCAN_RESULTS and
      SCHED_SCAN_STOPPED notifications toward user-space by having the
      driver provide it through the api.
      Reviewed-by: NHante Meuleman <hante.meuleman@broadcom.com>
      Reviewed-by: NPieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
      Reviewed-by: NFranky Lin <franky.lin@broadcom.com>
      Signed-off-by: NArend van Spriel <arend.vanspriel@broadcom.com>
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      b34939b9
    • A
      mac80211: Add support for BSS max idle period element · e38a017b
      Avraham Stern 提交于
      Parse the BSS max idle period element and set the BSS configuration
      accordingly so the driver can use this information to configure the
      max idle period and to use protected management frames for keep alive
      when required.
      
      The BSS max idle period element is defined in IEEE802.11-2016,
      section 9.4.2.79
      Signed-off-by: NAvraham Stern <avraham.stern@intel.com>
      Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      e38a017b
    • A
      cfg80211: unify cfg80211_roamed() and cfg80211_roamed_bss() · 29ce6ecb
      Avraham Stern 提交于
      cfg80211_roamed() and cfg80211_roamed_bss() take the same arguments
      except that cfg80211_roamed() requires the BSSID and
      cfg80211_roamed_bss() requires the bss entry.
      
      Unify the two functions by using a struct for driver initiated
      roaming information so that either the BSSID or the bss entry can be
      passed as an argument to the unified function.
      Signed-off-by: NAvraham Stern <avraham.stern@intel.com>
      [modified the ath6k, brcm80211, rndis and wlan-ng drivers accordingly]
      Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>
      [modify brcmfmac to remove the useless cast, spotted by Arend]
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      29ce6ecb
    • M
      mac80211: Fix possible sband related NULL pointer de-reference · 21a8e9dd
      Mohammed Shafi Shajakhan 提交于
      Existing API 'ieee80211_get_sdata_band' returns default 2 GHz band even
      if the channel context configuration is NULL. This crashes for chipsets
      which support 5 Ghz alone when it tries to access members of 'sband'.
      Channel context configuration can be NULL in multivif case and when
      channel switch is in progress (or) when it fails. Fix this by replacing
      the API 'ieee80211_get_sdata_band' with  'ieee80211_get_sband' which
      returns a NULL pointer for sband when the channel configuration is NULL.
      
      An example scenario is as below:
      
      In multivif mode (AP + STA) with drivers like ath10k, when we do a
      channel switch in the AP vif (which has a number of clients connected)
      and a STA vif which is connected to some other AP, when the channel
      switch in AP vif fails, while the STA vifs tries to connect to the
      other AP, there is a window where the channel context is NULL/invalid
      and this results in a crash  while the clients connected to the AP vif
      tries to reconnect and this race is very similar to the one investigated
      by Michal in https://patchwork.kernel.org/patch/3788161/ and this does
      happens with hardware that supports 5Ghz alone after long hours of
      testing with continuous channel switch on the AP vif
      
      ieee80211 phy0: channel context reservation cannot be finalized because
      some interfaces aren't switching
      wlan0: failed to finalize CSA, disconnecting
      wlan0-1: deauthenticating from 8c:fd:f0:01:54:9c by local choice
      	(Reason: 3=DEAUTH_LEAVING)
      
      	WARNING: CPU: 1 PID: 19032 at net/mac80211/ieee80211_i.h:1013 sta_info_alloc+0x374/0x3fc [mac80211]
      	[<bf77272c>] (sta_info_alloc [mac80211])
      	[<bf78776c>] (ieee80211_add_station [mac80211]))
      	[<bf73cc50>] (nl80211_new_station [cfg80211])
      
      	Unable to handle kernel NULL pointer dereference at virtual
      	address 00000014
      	pgd = d5f4c000
      	Internal error: Oops: 17 [#1] PREEMPT SMP ARM
      	PC is at sta_info_alloc+0x380/0x3fc [mac80211]
      	LR is at sta_info_alloc+0x37c/0x3fc [mac80211]
      	[<bf772738>] (sta_info_alloc [mac80211])
      	[<bf78776c>] (ieee80211_add_station [mac80211])
      	[<bf73cc50>] (nl80211_new_station [cfg80211]))
      
      Cc: Michal Kazior <michal.kazior@tieto.com>
      Signed-off-by: NMohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      21a8e9dd
    • F
      mac80211: add ieee80211_tx_status_ext · 5fe49a9d
      Felix Fietkau 提交于
      This allows the driver to pass in struct ieee80211_tx_status directly.
      Make ieee80211_tx_status_noskb a wrapper around it.
      
      As with ieee80211_tx_status_noskb, there is no _ni variant of this call,
      because it probably won't be needed.
      
      Even if the driver won't provide any extra status info other than what's
      in struct ieee80211_tx_info already, it can optimize status reporting
      this way by passing in the station pointer.
      Signed-off-by: NFelix Fietkau <nbd@nbd.name>
      [use C99 initializers]
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      5fe49a9d
    • F
      mac80211: move ieee80211_tx_status_noskb below ieee80211_tx_status · eefebd31
      Felix Fietkau 提交于
      Makes further cleanups more readable
      Signed-off-by: NFelix Fietkau <nbd@nbd.name>
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      eefebd31
    • F
      mac80211: make rate control tx status API more extensible · 18fb84d9
      Felix Fietkau 提交于
      Rename .tx_status_noskb to .tx_status_ext and pass a new on-stack
      struct ieee80211_tx_status instead of struct ieee80211_tx_info.
      
      This struct can be used to pass extra information, e.g. for dynamic tx
      power control
      Signed-off-by: NFelix Fietkau <nbd@nbd.name>
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      18fb84d9
    • J
      mac80211: use bitfield macros for encoded rate · dcba665b
      Johannes Berg 提交于
      Instead of hand-coding the bit manipulations, use the bitfield
      macros to generate the code for the encoded bitrate.
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      dcba665b
    • J
      mac80211: rename ieee80211_rx_status::vht_nss to just nss · 8613c948
      Johannes Berg 提交于
      This field will need to be used again for HE, so rename it now.
      
      Again, mostly done with this spatch:
      
      @@
      expression status;
      @@
      -status->vht_nss
      +status->nss
      @@
      expression status;
      @@
      -status.vht_nss
      +status.nss
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      8613c948
    • J
      mac80211: separate encoding/bandwidth from flags · da6a4352
      Johannes Berg 提交于
      We currently use a lot of flags that are mutually incompatible,
      separate this out into actual encoding and bandwidth enum values.
      
      Much of this again done with spatch, with manual post-editing,
      mostly to add the switch statements and get rid of the conversions.
      
      @@
      expression status;
      @@
      -status->enc_flags |= RX_ENC_FLAG_80MHZ
      +status->bw = RATE_INFO_BW_80
      @@
      expression status;
      @@
      -status->enc_flags |= RX_ENC_FLAG_40MHZ
      +status->bw = RATE_INFO_BW_40
      @@
      expression status;
      @@
      -status->enc_flags |= RX_ENC_FLAG_20MHZ
      +status->bw = RATE_INFO_BW_20
      @@
      expression status;
      @@
      -status->enc_flags |= RX_ENC_FLAG_160MHZ
      +status->bw = RATE_INFO_BW_160
      @@
      expression status;
      @@
      -status->enc_flags |= RX_ENC_FLAG_5MHZ
      +status->bw = RATE_INFO_BW_5
      @@
      expression status;
      @@
      -status->enc_flags |= RX_ENC_FLAG_10MHZ
      +status->bw = RATE_INFO_BW_10
      
      @@
      expression status;
      @@
      -status->enc_flags |= RX_ENC_FLAG_VHT
      +status->encoding = RX_ENC_VHT
      @@
      expression status;
      @@
      -status->enc_flags |= RX_ENC_FLAG_HT
      +status->encoding = RX_ENC_HT
      @@
      expression status;
      @@
      -status.enc_flags |= RX_ENC_FLAG_VHT
      +status.encoding = RX_ENC_VHT
      @@
      expression status;
      @@
      -status.enc_flags |= RX_ENC_FLAG_HT
      +status.encoding = RX_ENC_HT
      
      @@
      expression status;
      @@
      -(status->enc_flags & RX_ENC_FLAG_HT)
      +(status->encoding == RX_ENC_HT)
      @@
      expression status;
      @@
      -(status->enc_flags & RX_ENC_FLAG_VHT)
      +(status->encoding == RX_ENC_VHT)
      
      @@
      expression status;
      @@
      -(status->enc_flags & RX_ENC_FLAG_5MHZ)
      +(status->bw == RATE_INFO_BW_5)
      @@
      expression status;
      @@
      -(status->enc_flags & RX_ENC_FLAG_10MHZ)
      +(status->bw == RATE_INFO_BW_10)
      @@
      expression status;
      @@
      -(status->enc_flags & RX_ENC_FLAG_40MHZ)
      +(status->bw == RATE_INFO_BW_40)
      @@
      expression status;
      @@
      -(status->enc_flags & RX_ENC_FLAG_80MHZ)
      +(status->bw == RATE_INFO_BW_80)
      @@
      expression status;
      @@
      -(status->enc_flags & RX_ENC_FLAG_160MHZ)
      +(status->bw == RATE_INFO_BW_160)
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      da6a4352
    • J
      mac80211: clean up rate encoding bits in RX status · 7fdd69c5
      Johannes Berg 提交于
      In preparation for adding support for HE rates, clean up
      the driver report encoding for rate/bandwidth reporting
      on RX frames.
      
      Much of this patch was done with the following spatch:
      
      @@
      expression status;
      @@
      -status->flag & (RX_FLAG_HT | RX_FLAG_VHT)
      +status->enc_flags & (RX_ENC_FLAG_HT | RX_ENC_FLAG_VHT)
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_SHORTPRE
      +status->enc_flags op RX_ENC_FLAG_SHORTPRE
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_SHORTPRE
      +status->enc_flags & RX_ENC_FLAG_SHORTPRE
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_HT
      +status->enc_flags op RX_ENC_FLAG_HT
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_HT
      +status->enc_flags & RX_ENC_FLAG_HT
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_40MHZ
      +status->enc_flags op RX_ENC_FLAG_40MHZ
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_40MHZ
      +status->enc_flags & RX_ENC_FLAG_40MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_SHORT_GI
      +status->enc_flags op RX_ENC_FLAG_SHORT_GI
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_SHORT_GI
      +status->enc_flags & RX_ENC_FLAG_SHORT_GI
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_HT_GF
      +status->enc_flags op RX_ENC_FLAG_HT_GF
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_HT_GF
      +status->enc_flags & RX_ENC_FLAG_HT_GF
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_VHT
      +status->enc_flags op RX_ENC_FLAG_VHT
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_VHT
      +status->enc_flags & RX_ENC_FLAG_VHT
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_STBC_MASK
      +status->enc_flags op RX_ENC_FLAG_STBC_MASK
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_STBC_MASK
      +status->enc_flags & RX_ENC_FLAG_STBC_MASK
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_LDPC
      +status->enc_flags op RX_ENC_FLAG_LDPC
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_LDPC
      +status->enc_flags & RX_ENC_FLAG_LDPC
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_10MHZ
      +status->enc_flags op RX_ENC_FLAG_10MHZ
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_10MHZ
      +status->enc_flags & RX_ENC_FLAG_10MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->flag op RX_FLAG_5MHZ
      +status->enc_flags op RX_ENC_FLAG_5MHZ
      @@
      expression status;
      @@
      -status->flag & RX_FLAG_5MHZ
      +status->enc_flags & RX_ENC_FLAG_5MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->vht_flag op RX_VHT_FLAG_80MHZ
      +status->enc_flags op RX_ENC_FLAG_80MHZ
      @@
      expression status;
      @@
      -status->vht_flag & RX_VHT_FLAG_80MHZ
      +status->enc_flags & RX_ENC_FLAG_80MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->vht_flag op RX_VHT_FLAG_160MHZ
      +status->enc_flags op RX_ENC_FLAG_160MHZ
      @@
      expression status;
      @@
      -status->vht_flag & RX_VHT_FLAG_160MHZ
      +status->enc_flags & RX_ENC_FLAG_160MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status->vht_flag op RX_VHT_FLAG_BF
      +status->enc_flags op RX_ENC_FLAG_BF
      @@
      expression status;
      @@
      -status->vht_flag & RX_VHT_FLAG_BF
      +status->enc_flags & RX_ENC_FLAG_BF
      
      @@
      assignment operator op;
      expression status, STBC;
      @@
      -status->flag op STBC << RX_FLAG_STBC_SHIFT
      +status->enc_flags op STBC << RX_ENC_FLAG_STBC_SHIFT
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_SHORTPRE
      +status.enc_flags op RX_ENC_FLAG_SHORTPRE
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_SHORTPRE
      +status.enc_flags & RX_ENC_FLAG_SHORTPRE
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_HT
      +status.enc_flags op RX_ENC_FLAG_HT
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_HT
      +status.enc_flags & RX_ENC_FLAG_HT
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_40MHZ
      +status.enc_flags op RX_ENC_FLAG_40MHZ
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_40MHZ
      +status.enc_flags & RX_ENC_FLAG_40MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_SHORT_GI
      +status.enc_flags op RX_ENC_FLAG_SHORT_GI
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_SHORT_GI
      +status.enc_flags & RX_ENC_FLAG_SHORT_GI
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_HT_GF
      +status.enc_flags op RX_ENC_FLAG_HT_GF
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_HT_GF
      +status.enc_flags & RX_ENC_FLAG_HT_GF
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_VHT
      +status.enc_flags op RX_ENC_FLAG_VHT
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_VHT
      +status.enc_flags & RX_ENC_FLAG_VHT
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_STBC_MASK
      +status.enc_flags op RX_ENC_FLAG_STBC_MASK
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_STBC_MASK
      +status.enc_flags & RX_ENC_FLAG_STBC_MASK
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_LDPC
      +status.enc_flags op RX_ENC_FLAG_LDPC
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_LDPC
      +status.enc_flags & RX_ENC_FLAG_LDPC
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_10MHZ
      +status.enc_flags op RX_ENC_FLAG_10MHZ
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_10MHZ
      +status.enc_flags & RX_ENC_FLAG_10MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.flag op RX_FLAG_5MHZ
      +status.enc_flags op RX_ENC_FLAG_5MHZ
      @@
      expression status;
      @@
      -status.flag & RX_FLAG_5MHZ
      +status.enc_flags & RX_ENC_FLAG_5MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.vht_flag op RX_VHT_FLAG_80MHZ
      +status.enc_flags op RX_ENC_FLAG_80MHZ
      @@
      expression status;
      @@
      -status.vht_flag & RX_VHT_FLAG_80MHZ
      +status.enc_flags & RX_ENC_FLAG_80MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.vht_flag op RX_VHT_FLAG_160MHZ
      +status.enc_flags op RX_ENC_FLAG_160MHZ
      @@
      expression status;
      @@
      -status.vht_flag & RX_VHT_FLAG_160MHZ
      +status.enc_flags & RX_ENC_FLAG_160MHZ
      
      @@
      assignment operator op;
      expression status;
      @@
      -status.vht_flag op RX_VHT_FLAG_BF
      +status.enc_flags op RX_ENC_FLAG_BF
      @@
      expression status;
      @@
      -status.vht_flag & RX_VHT_FLAG_BF
      +status.enc_flags & RX_ENC_FLAG_BF
      
      @@
      assignment operator op;
      expression status, STBC;
      @@
      -status.flag op STBC << RX_FLAG_STBC_SHIFT
      +status.enc_flags op STBC << RX_ENC_FLAG_STBC_SHIFT
      
      @@
      @@
      -RX_FLAG_STBC_SHIFT
      +RX_ENC_FLAG_STBC_SHIFT
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      7fdd69c5