diff options
author | Tomas Winkler <tomas.winkler@intel.com> | 2008-06-12 09:47:11 +0800 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2008-06-14 12:18:08 -0400 |
commit | e7d326ac437e9e9425dcd79382f4e5f6ca31fb16 (patch) | |
tree | 82dad05f71fd368c98f30b39eb15921c17487a78 /drivers/net/wireless/iwlwifi/iwl-core.c | |
parent | 2a421b91d6fe89e27ded7544a25449c0b050098f (diff) |
iwlwifi: move rate helpers to iwlcore
This patch moves rate helpers to iwlcore.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-core.c')
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 164697a6413..7e20f46132d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -85,6 +85,63 @@ const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = { }; EXPORT_SYMBOL(iwl_rates); +/** + * translate ucode response to mac80211 tx status control values + */ +void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, + struct ieee80211_tx_info *control) +{ + int rate_index; + + control->antenna_sel_tx = + ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); + if (rate_n_flags & RATE_MCS_HT_MSK) + control->flags |= IEEE80211_TX_CTL_OFDM_HT; + if (rate_n_flags & RATE_MCS_GF_MSK) + control->flags |= IEEE80211_TX_CTL_GREEN_FIELD; + if (rate_n_flags & RATE_MCS_FAT_MSK) + control->flags |= IEEE80211_TX_CTL_40_MHZ_WIDTH; + if (rate_n_flags & RATE_MCS_DUP_MSK) + control->flags |= IEEE80211_TX_CTL_DUP_DATA; + if (rate_n_flags & RATE_MCS_SGI_MSK) + control->flags |= IEEE80211_TX_CTL_SHORT_GI; + rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags); + if (control->band == IEEE80211_BAND_5GHZ) + rate_index -= IWL_FIRST_OFDM_RATE; + control->tx_rate_idx = rate_index; +} +EXPORT_SYMBOL(iwl_hwrate_to_tx_control); + +int iwl_hwrate_to_plcp_idx(u32 rate_n_flags) +{ + int idx = 0; + + /* HT rate format */ + if (rate_n_flags & RATE_MCS_HT_MSK) { + idx = (rate_n_flags & 0xff); + + if (idx >= IWL_RATE_MIMO2_6M_PLCP) + idx = idx - IWL_RATE_MIMO2_6M_PLCP; + + idx += IWL_FIRST_OFDM_RATE; + /* skip 9M not supported in ht*/ + if (idx >= IWL_RATE_9M_INDEX) + idx += 1; + if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE)) + return idx; + + /* legacy rate format, search for match in table */ + } else { + for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++) + if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF)) + return idx; + } + + return -1; +} +EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx); + + const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; EXPORT_SYMBOL(iwl_bcast_addr); |