iwlwifi: fix default LQ table in 5.2 band
The default LQ is filled decreasingly using
iwl_get_prev_ieee_rate from a starting rate.
Since the starting rate is already the lowest one for
a specific band it should be actually filled evenly with
the starting rate: 1M and 6M for 5.2GHZ and 2.4GH respectively.
The bug is that for for A or G-only it decreases to
CCK rates which are not supported.
iwl_get_prev_ieee_rate function is just not band aware.
This affects broadcast station which lq table
is not updated by rs algorithm
G-only scenario is not treated by this patch
iwl_get_prev_ieee_rate is removed completely as it
is not used in other contexts
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index ccd0902..6edd034 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -386,7 +386,8 @@
{
int i, r;
struct iwl_link_quality_cmd *link_cmd;
- u32 rate_flags;
+ u32 rate_flags = 0;
+ __le32 rate_n_flags;
link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
if (!link_cmd) {
@@ -400,18 +401,14 @@
else
r = IWL_RATE_1M_INDEX;
- for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
- rate_flags = 0;
- if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
- rate_flags |= RATE_MCS_CCK_MSK;
+ if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
+ rate_flags |= RATE_MCS_CCK_MSK;
- rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
+ rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
RATE_MCS_ANT_POS;
-
- link_cmd->rs_table[i].rate_n_flags =
- iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
- r = iwl_get_prev_ieee_rate(r);
- }
+ rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
+ for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
+ link_cmd->rs_table[i].rate_n_flags = rate_n_flags;
link_cmd->general_params.single_stream_ant_msk =
first_antenna(priv->hw_params.valid_tx_ant);