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author | Luciano Coelho | 2014-11-10 10:10:14 +0100 |
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committer | Emmanuel Grumbach | 2014-11-24 07:30:31 +0100 |
commit | dc88b4baa9d16fdf15f76b6277461e6d9e4eb8e6 (patch) | |
tree | 8b5f98f7c7bbeb80d5fff39f2d048bf4a991c51b /drivers/net/wireless/iwlwifi/mvm/mvm.h | |
parent | iwlwifi: mvm: use switching_chanctx argument instead of csa_active (diff) | |
download | kernel-qcow2-linux-dc88b4baa9d16fdf15f76b6277461e6d9e4eb8e6.tar.gz kernel-qcow2-linux-dc88b4baa9d16fdf15f76b6277461e6d9e4eb8e6.tar.xz kernel-qcow2-linux-dc88b4baa9d16fdf15f76b6277461e6d9e4eb8e6.zip |
iwlwifi: mvm: add CSA absent time event for clients
Add an absent time event when pre_channel_switch is called and use the
time event started indication to set the disable_tx bit instead of
doing it in unassign_vif(). This is done so that the firmware queues
are stopped before the actual switch takes place to avoid losing
packets while the AP/GO is performing its actual switch.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/mvm.h')
-rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/mvm.h | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index 2c54c522b8c6..2816c6b9222b 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -87,11 +87,12 @@ /* A TimeUnit is 1024 microsecond */ #define MSEC_TO_TU(_msec) (_msec*1000/1024) -/* This value represents the number of TUs before CSA "beacon 0" TBTT - * when the CSA time-event needs to be scheduled to start. It must be - * big enough to ensure that we switch in time. +/* These values represent the number of TUs before CSA "beacon 0" TBTT + * when the CSA time-event needs to be scheduled to start. They must + * be big enough to ensure that we switch in time. */ #define IWL_MVM_CHANNEL_SWITCH_TIME_GO 40 +#define IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT 110 /* * This value (in TUs) is used to fine tune the CSA NoA end time which should @@ -797,6 +798,26 @@ static inline bool iwl_mvm_is_radio_killed(struct iwl_mvm *mvm) test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); } +/* Must be called with rcu_read_lock() held and it can only be + * released when mvmsta is not needed anymore. + */ +static inline struct iwl_mvm_sta * +iwl_mvm_sta_from_staid_rcu(struct iwl_mvm *mvm, u8 sta_id) +{ + struct ieee80211_sta *sta; + + if (sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)) + return NULL; + + sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); + + /* This can happen if the station has been removed right now */ + if (IS_ERR_OR_NULL(sta)) + return NULL; + + return iwl_mvm_sta_from_mac80211(sta); +} + static inline struct iwl_mvm_sta * iwl_mvm_sta_from_staid_protected(struct iwl_mvm *mvm, u8 sta_id) { |