* [PATCH v5.4 v2] iwlwifi: fw api: support new API for scan config cmd
@ 2019-10-29 15:47 Luca Coelho
2019-10-29 16:00 ` Kalle Valo
2019-10-30 15:08 ` Kalle Valo
0 siblings, 2 replies; 3+ messages in thread
From: Luca Coelho @ 2019-10-29 15:47 UTC (permalink / raw)
To: kvalo; +Cc: linux-wireless
From: Ayala Beker <ayala.beker@intel.com>
The API was reduced to include only knowledge currently needed by the
FW scan logic, the rest is legacy. Support the new, reduced version.
Using the old API with newer firmwares (starting from
iwlwifi-*-50.ucode, which implements and requires the new API version)
causes an assertion failure similar to this one:
[ 2.854505] iwlwifi 0000:00:14.3: 0x20000038 | BAD_COMMAND
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
In v2:
* Expand the commit message to explain what the problem is.
.../net/wireless/intel/iwlwifi/fw/api/scan.h | 22 +++++++++-
drivers/net/wireless/intel/iwlwifi/fw/file.h | 3 ++
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 6 +++
drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 40 +++++++++++++++----
4 files changed, 61 insertions(+), 10 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h b/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
index 39c64850cb6f..c0750ced5ac2 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
@@ -520,7 +520,7 @@ struct iwl_scan_dwell {
} __packed;
/**
- * struct iwl_scan_config
+ * struct iwl_scan_config_v1
* @flags: enum scan_config_flags
* @tx_chains: valid_tx antenna - ANT_* definitions
* @rx_chains: valid_rx antenna - ANT_* definitions
@@ -552,7 +552,7 @@ struct iwl_scan_config_v1 {
#define SCAN_LB_LMAC_IDX 0
#define SCAN_HB_LMAC_IDX 1
-struct iwl_scan_config {
+struct iwl_scan_config_v2 {
__le32 flags;
__le32 tx_chains;
__le32 rx_chains;
@@ -564,6 +564,24 @@ struct iwl_scan_config {
u8 bcast_sta_id;
u8 channel_flags;
u8 channel_array[];
+} __packed; /* SCAN_CONFIG_DB_CMD_API_S_2 */
+
+/**
+ * struct iwl_scan_config
+ * @enable_cam_mode: whether to enable CAM mode.
+ * @enable_promiscouos_mode: whether to enable promiscouos mode
+ * @bcast_sta_id: the index of the station in the fw
+ * @reserved: reserved
+ * @tx_chains: valid_tx antenna - ANT_* definitions
+ * @rx_chains: valid_rx antenna - ANT_* definitions
+ */
+struct iwl_scan_config {
+ u8 enable_cam_mode;
+ u8 enable_promiscouos_mode;
+ u8 bcast_sta_id;
+ u8 reserved;
+ __le32 tx_chains;
+ __le32 rx_chains;
} __packed; /* SCAN_CONFIG_DB_CMD_API_S_3 */
/**
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/file.h b/drivers/net/wireless/intel/iwlwifi/fw/file.h
index 423cc0cf8e78..0d5bc4ce5c07 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/file.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h
@@ -288,6 +288,8 @@ typedef unsigned int __bitwise iwl_ucode_tlv_api_t;
* STA_CONTEXT_DOT11AX_API_S
* @IWL_UCODE_TLV_CAPA_SAR_TABLE_VER: This ucode supports different sar
* version tables.
+ * @IWL_UCODE_TLV_API_REDUCED_SCAN_CONFIG: This ucode supports v3 of
+ * SCAN_CONFIG_DB_CMD_API_S.
*
* @NUM_IWL_UCODE_TLV_API: number of bits used
*/
@@ -321,6 +323,7 @@ enum iwl_ucode_tlv_api {
IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE = (__force iwl_ucode_tlv_api_t)53,
IWL_UCODE_TLV_API_FTM_RTT_ACCURACY = (__force iwl_ucode_tlv_api_t)54,
IWL_UCODE_TLV_API_SAR_TABLE_VER = (__force iwl_ucode_tlv_api_t)55,
+ IWL_UCODE_TLV_API_REDUCED_SCAN_CONFIG = (__force iwl_ucode_tlv_api_t)56,
IWL_UCODE_TLV_API_ADWELL_HB_DEF_N_AP = (__force iwl_ucode_tlv_api_t)57,
IWL_UCODE_TLV_API_SCAN_EXT_CHAN_VER = (__force iwl_ucode_tlv_api_t)58,
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 843d00bf2bd5..5ca50f39a023 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -1405,6 +1405,12 @@ static inline bool iwl_mvm_is_scan_ext_chan_supported(struct iwl_mvm *mvm)
IWL_UCODE_TLV_API_SCAN_EXT_CHAN_VER);
}
+static inline bool iwl_mvm_is_reduced_config_scan_supported(struct iwl_mvm *mvm)
+{
+ return fw_has_api(&mvm->fw->ucode_capa,
+ IWL_UCODE_TLV_API_REDUCED_SCAN_CONFIG);
+}
+
static inline bool iwl_mvm_has_new_rx_stats_api(struct iwl_mvm *mvm)
{
return fw_has_api(&mvm->fw->ucode_capa,
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index f6b3045badbd..fcafa22ec6ce 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -1137,11 +1137,11 @@ static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
}
-static void iwl_mvm_fill_scan_config(struct iwl_mvm *mvm, void *config,
- u32 flags, u8 channel_flags,
- u32 max_channels)
+static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
+ u32 flags, u8 channel_flags,
+ u32 max_channels)
{
- struct iwl_scan_config *cfg = config;
+ struct iwl_scan_config_v2 *cfg = config;
cfg->flags = cpu_to_le32(flags);
cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
@@ -1185,7 +1185,7 @@ static void iwl_mvm_fill_scan_config(struct iwl_mvm *mvm, void *config,
iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
}
-int iwl_mvm_config_scan(struct iwl_mvm *mvm)
+static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
{
void *cfg;
int ret, cmd_size;
@@ -1217,7 +1217,7 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
}
if (iwl_mvm_cdb_scan_api(mvm))
- cmd_size = sizeof(struct iwl_scan_config);
+ cmd_size = sizeof(struct iwl_scan_config_v2);
else
cmd_size = sizeof(struct iwl_scan_config_v1);
cmd_size += num_channels;
@@ -1254,8 +1254,8 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
- iwl_mvm_fill_scan_config(mvm, cfg, flags, channel_flags,
- num_channels);
+ iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
+ num_channels);
} else {
iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
num_channels);
@@ -1277,6 +1277,30 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
return ret;
}
+int iwl_mvm_config_scan(struct iwl_mvm *mvm)
+{
+ struct iwl_scan_config cfg;
+ struct iwl_host_cmd cmd = {
+ .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
+ .len[0] = sizeof(cfg),
+ .data[0] = &cfg,
+ .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
+ };
+
+ if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
+ return iwl_mvm_legacy_config_scan(mvm);
+
+ memset(&cfg, 0, sizeof(cfg));
+
+ cfg.bcast_sta_id = mvm->aux_sta.sta_id;
+ cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
+ cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
+
+ IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
+
+ return iwl_mvm_send_cmd(mvm, &cmd);
+}
+
static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
{
int i;
--
2.23.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v5.4 v2] iwlwifi: fw api: support new API for scan config cmd
2019-10-29 15:47 [PATCH v5.4 v2] iwlwifi: fw api: support new API for scan config cmd Luca Coelho
@ 2019-10-29 16:00 ` Kalle Valo
2019-10-30 15:08 ` Kalle Valo
1 sibling, 0 replies; 3+ messages in thread
From: Kalle Valo @ 2019-10-29 16:00 UTC (permalink / raw)
To: Luca Coelho; +Cc: linux-wireless
Luca Coelho <luca@coelho.fi> writes:
> From: Ayala Beker <ayala.beker@intel.com>
>
> The API was reduced to include only knowledge currently needed by the
> FW scan logic, the rest is legacy. Support the new, reduced version.
>
> Using the old API with newer firmwares (starting from
> iwlwifi-*-50.ucode, which implements and requires the new API version)
> causes an assertion failure similar to this one:
>
> [ 2.854505] iwlwifi 0000:00:14.3: 0x20000038 | BAD_COMMAND
>
> Signed-off-by: Ayala Beker <ayala.beker@intel.com>
> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
> ---
>
> In v2:
>
> * Expand the commit message to explain what the problem is.
Perfect, thanks!
--
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v5.4 v2] iwlwifi: fw api: support new API for scan config cmd
2019-10-29 15:47 [PATCH v5.4 v2] iwlwifi: fw api: support new API for scan config cmd Luca Coelho
2019-10-29 16:00 ` Kalle Valo
@ 2019-10-30 15:08 ` Kalle Valo
1 sibling, 0 replies; 3+ messages in thread
From: Kalle Valo @ 2019-10-30 15:08 UTC (permalink / raw)
To: Luca Coelho; +Cc: linux-wireless
Luca Coelho <luca@coelho.fi> wrote:
> From: Ayala Beker <ayala.beker@intel.com>
>
> The API was reduced to include only knowledge currently needed by the
> FW scan logic, the rest is legacy. Support the new, reduced version.
>
> Using the old API with newer firmwares (starting from
> iwlwifi-*-50.ucode, which implements and requires the new API version)
> causes an assertion failure similar to this one:
>
> [ 2.854505] iwlwifi 0000:00:14.3: 0x20000038 | BAD_COMMAND
>
> Signed-off-by: Ayala Beker <ayala.beker@intel.com>
> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Patch applied to wireless-drivers.git, thanks.
3d206e6899a0 iwlwifi: fw api: support new API for scan config cmd
--
https://patchwork.kernel.org/patch/11218089/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-10-29 15:47 [PATCH v5.4 v2] iwlwifi: fw api: support new API for scan config cmd Luca Coelho
2019-10-29 16:00 ` Kalle Valo
2019-10-30 15:08 ` Kalle Valo
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