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iwlwifi: mvm: Update TX power in TPC reports 

Introduce new tx command flag (TX_CMD_FLG_WRITE_TX_POWER) which requests the
fw to update the tx power value at some constant offset.
Set this flag when transmitting either TPC report or Link measurement report
action frames.
In addition, introduce new tlv which indicates whether the fw supports power
insertion (IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) and publish the
corresponding nl80211 feature.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Andrei Otcheretianski 2014-07-01 12:54:25 +03:00 committed by Emmanuel Grumbach
parent b71d9c8a9d
commit f1daa00e36
4 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/iwlwifi/iwl-fw.h
View File

@ -145,9 +145,13 @@ enum iwl_ucode_tlv_api {
/**
* enum iwl_ucode_tlv_capa - ucode capabilities
* @IWL_UCODE_TLV_CAPA_D0I3_SUPPORT: supports D0i3
* @IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT: supports insertion of current
* tx power value into TPC Report action frame and Link Measurement Report
* action frame
*/
enum iwl_ucode_tlv_capa {
IWL_UCODE_TLV_CAPA_D0I3_SUPPORT = BIT(0),
IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT = BIT(8),
};
/* The default calibrate table size if not specified by firmware file */

2
drivers/net/wireless/iwlwifi/mvm/fw-api-tx.h
View File

@ -66,6 +66,7 @@
/**
* enum iwl_tx_flags - bitmasks for tx_flags in TX command
* @TX_CMD_FLG_PROT_REQUIRE: use RTS or CTS-to-self to protect the frame
* @TX_CMD_FLG_WRITE_TX_POWER: update current tx power value in the mgmt frame
* @TX_CMD_FLG_ACK: expect ACK from receiving station
* @TX_CMD_FLG_STA_RATE: use RS table with initial index from the TX command.
* Otherwise, use rate_n_flags from the TX command
@ -97,6 +98,7 @@
*/
enum iwl_tx_flags {
TX_CMD_FLG_PROT_REQUIRE = BIT(0),
TX_CMD_FLG_WRITE_TX_POWER = BIT(1),
TX_CMD_FLG_ACK = BIT(3),
TX_CMD_FLG_STA_RATE = BIT(4),
TX_CMD_FLG_BAR = BIT(6),

4
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View File

@ -412,6 +412,10 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
NL80211_FEATURE_DYNAMIC_SMPS |
NL80211_FEATURE_STATIC_SMPS;
if (mvm->fw->ucode_capa.capa[0] &
IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
/* currently FW API supports only one optional cipher scheme */

5
drivers/net/wireless/iwlwifi/mvm/tx.c
View File

@ -133,6 +133,11 @@ static void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb,
!is_multicast_ether_addr(ieee80211_get_DA(hdr)))
tx_flags |= TX_CMD_FLG_PROT_REQUIRE;
if ((mvm->fw->ucode_capa.capa[0] &
IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) &&
ieee80211_action_contains_tpc(skb))
tx_flags |= TX_CMD_FLG_WRITE_TX_POWER;
tx_cmd->tx_flags = cpu_to_le32(tx_flags);
/* Total # bytes to be transmitted */
tx_cmd->len = cpu_to_le16((u16)skb->len);