diff options
| author | Daniel C Halperin | 2009-08-28 18:44:47 +0200 |
|---|---|---|
| committer | John W. Linville | 2009-08-31 20:42:10 +0200 |
| commit | 31513be8a06874eb359908b7b735929837831a9a (patch) | |
| tree | 1bb7bbff7fa671ae2169012cf81dc84ebd64722b /drivers/net/wireless/iwlwifi/iwl-agn-rs.c | |
| parent | iwlwifi: remove incorrect uses of ieee80211_get_tx_rate to prevent TX stall (diff) | |
| download | kernel-qcow2-linux-31513be8a06874eb359908b7b735929837831a9a.tar.gz kernel-qcow2-linux-31513be8a06874eb359908b7b735929837831a9a.tar.xz kernel-qcow2-linux-31513be8a06874eb359908b7b735929837831a9a.zip | |
iwlwifi: use iwl_hwrate_get_mac80211_idx where appropriate
For HT packets, mac80211 expects the rate_idx to be an MCS number, which is the
lower byte of rate_n_flags. However, iwl_hwrate_to_plcp_idx takes the MCS
number and reduces it down to the range 0-8 (6 to 60 Mbps), removing the bits
that signify multiply streams, HT40 Duplicate mode, or unequal modulation.
This version is used for various internal purposes through the driver.
Add the function iwl_hwrate_get_mac80211_idx, an alternate version which takes
the rate and the band and returns the mac80211 index (MCS, for HT packets, and
PLCP rate, for legacy packets).
Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-rs.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-rs.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c index 8239e5508cac..40b207aa8fef 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c @@ -878,6 +878,12 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband, rs_index -= IWL_FIRST_OFDM_RATE; mac_flags = info->status.rates[0].flags; mac_index = info->status.rates[0].idx; + /* For HT packets, map MCS to PLCP */ + if (mac_flags & IEEE80211_TX_RC_MCS) { + mac_index &= RATE_MCS_CODE_MSK; /* Remove # of streams */ + if (mac_index >= (IWL_RATE_9M_INDEX - IWL_FIRST_OFDM_RATE)) + mac_index++; + } if ((mac_index < 0) || (tbl_type.is_SGI != !!(mac_flags & IEEE80211_TX_RC_SHORT_GI)) || @@ -886,8 +892,8 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband, (tbl_type.ant_type != info->antenna_sel_tx) || (!!(tx_rate & RATE_MCS_HT_MSK) != !!(mac_flags & IEEE80211_TX_RC_MCS)) || (!!(tx_rate & RATE_MCS_GF_MSK) != !!(mac_flags & IEEE80211_TX_RC_GREEN_FIELD)) || - rs_index != mac_index) { - IWL_DEBUG_RATE(priv, "initial rate does not match 0x%x\n", tx_rate); + (rs_index != mac_index)) { + IWL_DEBUG_RATE(priv, "initial rate %d does not match %d (0x%x)\n", mac_index, rs_index, tx_rate); /* the last LQ command could failed so the LQ in ucode not * the same in driver sync up */ |