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iwlagn: improve RXON checking

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The current RXON checking doesn't verify that
the channel is valid (or at least non-zero),
so add that. Also, add a WARN() so we get a
stacktrace, and capture a bitmask of errors
in order to capture all necessary information
in the warning itself (in case the previous
messages are snipped off.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
This commit is contained in:
Johannes Berg 2011-04-21 10:57:23 -07:00 committed by Wey-Yi Guy
parent bbf18ff1be
commit c914ac26ca
1 changed files with 19 additions and 19 deletions
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38
drivers/net/wireless/iwlwifi/iwl-core.c
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@ -416,72 +416,72 @@ void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
{
struct iwl_rxon_cmd *rxon = &ctx->staging;
bool error = false;
u32 errors = 0;
if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
IWL_WARN(priv, "check 2.4G: wrong narrow\n");
error = true;
errors |= BIT(0);
}
if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
IWL_WARN(priv, "check 2.4G: wrong radar\n");
error = true;
errors |= BIT(1);
}
} else {
if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
IWL_WARN(priv, "check 5.2G: not short slot!\n");
error = true;
errors |= BIT(2);
}
if (rxon->flags & RXON_FLG_CCK_MSK) {
IWL_WARN(priv, "check 5.2G: CCK!\n");
error = true;
errors |= BIT(3);
}
}
if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
IWL_WARN(priv, "mac/bssid mcast!\n");
error = true;
errors |= BIT(4);
}
/* make sure basic rates 6Mbps and 1Mbps are supported */
if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 &&
(rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) {
IWL_WARN(priv, "neither 1 nor 6 are basic\n");
error = true;
errors |= BIT(5);
}
if (le16_to_cpu(rxon->assoc_id) > 2007) {
IWL_WARN(priv, "aid > 2007\n");
error = true;
errors |= BIT(6);
}
if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
IWL_WARN(priv, "CCK and short slot\n");
error = true;
errors |= BIT(7);
}
if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
IWL_WARN(priv, "CCK and auto detect");
error = true;
errors |= BIT(8);
}
if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
RXON_FLG_TGG_PROTECT_MSK)) ==
RXON_FLG_TGG_PROTECT_MSK) {
IWL_WARN(priv, "TGg but no auto-detect\n");
error = true;
errors |= BIT(9);
}
if (error)
IWL_WARN(priv, "Tuning to channel %d\n",
le16_to_cpu(rxon->channel));
if (error) {
IWL_ERR(priv, "Invalid RXON\n");
return -EINVAL;
if (rxon->channel == 0) {
IWL_WARN(priv, "zero channel is invalid\n");
errors |= BIT(10);
}
return 0;
WARN(errors, "Invalid RXON (%#x), channel %d",
errors, le16_to_cpu(rxon->channel));
return errors ? -EINVAL : 0;
}
/**