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iwlwifi: fix default LQ table in 5.2 band

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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>
This commit is contained in:
Tomas Winkler 2010-08-23 14:00:54 -07:00 committed by Wey-Yi Guy
parent 950094cb06
commit cf6da94acb
2 changed files with 8 additions and 20 deletions
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9
drivers/net/wireless/iwlwifi/iwl-agn-rs.h
View File

@ -453,15 +453,6 @@ static inline u8 first_antenna(u8 mask)
}
static inline u8 iwl_get_prev_ieee_rate(u8 rate_index)
{
u8 rate = iwl_rates[rate_index].prev_ieee;
if (rate == IWL_RATE_INVALID)
rate = rate_index;
return rate;
}
static inline u8 iwl3945_get_prev_ieee_rate(u8 rate_index)
{
u8 rate = iwl3945_rates[rate_index].prev_ieee;

13
drivers/net/wireless/iwlwifi/iwl-sta.c
View File

@ -386,7 +386,8 @@ static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv,
{
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 @@ static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv,
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;
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);