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wl18xx: count HW block spare based correctly on keys 

We have no idea how many VIFs there are requiring a special spare, we
know just about the number of keys set. Rename the counter appropriately
and toggle it whenever a special key is added/removed.
Previously this was only changed once, since it was toggled whenever
the actual spare was changed.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Arik Nemtsov 2012-11-28 11:42:48 +02:00 committed by Luciano Coelho
parent 0b70078c38
commit 2fd8a3bb49
2 changed files with 34 additions and 28 deletions
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58
drivers/net/wireless/ti/wl18xx/main.c
View File

@ -1021,7 +1021,7 @@ static int wl18xx_hw_init(struct wl1271 *wl)
/* (re)init private structures. Relevant on recovery as well. */
priv->last_fw_rls_idx = 0;
priv->extra_spare_vif_count = 0;
priv->extra_spare_key_count = 0;
/* set the default amount of spare blocks in the bitmap */
ret = wl18xx_set_host_cfg_bitmap(wl, WL18XX_TX_HW_BLOCK_SPARE);
@ -1285,8 +1285,8 @@ static int wl18xx_get_spare_blocks(struct wl1271 *wl, bool is_gem)
{
struct wl18xx_priv *priv = wl->priv;
/* If we have VIFs requiring extra spare, indulge them */
if (priv->extra_spare_vif_count)
/* If we have keys requiring extra spare, indulge them */
if (priv->extra_spare_key_count)
return WL18XX_TX_HW_EXTRA_BLOCK_SPARE;
return WL18XX_TX_HW_BLOCK_SPARE;
@ -1298,42 +1298,48 @@ static int wl18xx_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
struct ieee80211_key_conf *key_conf)
{
struct wl18xx_priv *priv = wl->priv;
bool change_spare = false;
bool change_spare = false, special_enc;
int ret;
/*
* when adding the first or removing the last GEM/TKIP interface,
* we have to adjust the number of spare blocks.
*/
change_spare = (key_conf->cipher == WL1271_CIPHER_SUITE_GEM ||
key_conf->cipher == WLAN_CIPHER_SUITE_TKIP) &&
((priv->extra_spare_vif_count == 0 && cmd == SET_KEY) ||
(priv->extra_spare_vif_count == 1 && cmd == DISABLE_KEY));
wl1271_debug(DEBUG_CRYPT, "extra spare keys before: %d",
priv->extra_spare_key_count);
/* no need to change spare - just regular set_key */
if (!change_spare)
return wlcore_set_key(wl, cmd, vif, sta, key_conf);
special_enc = key_conf->cipher == WL1271_CIPHER_SUITE_GEM ||
key_conf->cipher == WLAN_CIPHER_SUITE_TKIP;
ret = wlcore_set_key(wl, cmd, vif, sta, key_conf);
if (ret < 0)
goto out;
/*
* when adding the first or removing the last GEM/TKIP key,
* we have to adjust the number of spare blocks.
*/
if (special_enc) {
if (cmd == SET_KEY) {
/* first key */
change_spare = (priv->extra_spare_key_count == 0);
priv->extra_spare_key_count++;
} else if (cmd == DISABLE_KEY) {
/* last key */
change_spare = (priv->extra_spare_key_count == 1);
priv->extra_spare_key_count--;
}
}
wl1271_debug(DEBUG_CRYPT, "extra spare keys after: %d",
priv->extra_spare_key_count);
if (!change_spare)
goto out;
/* key is now set, change the spare blocks */
if (cmd == SET_KEY) {
if (priv->extra_spare_key_count)
ret = wl18xx_set_host_cfg_bitmap(wl,
WL18XX_TX_HW_EXTRA_BLOCK_SPARE);
if (ret < 0)
goto out;
priv->extra_spare_vif_count++;
} else {
else
ret = wl18xx_set_host_cfg_bitmap(wl,
WL18XX_TX_HW_BLOCK_SPARE);
if (ret < 0)
goto out;
priv->extra_spare_vif_count--;
}
out:
return ret;

4
drivers/net/wireless/ti/wl18xx/wl18xx.h
View File

@ -49,8 +49,8 @@ struct wl18xx_priv {
/* Index of last released Tx desc in FW */
u8 last_fw_rls_idx;
/* number of VIFs requiring extra spare mem-blocks */
int extra_spare_vif_count;
/* number of keys requiring extra spare mem-blocks */
int extra_spare_key_count;
};
#define WL18XX_FW_MAX_TX_STATUS_DESC 33