On Thursday 21 May 2020 14:35:59 Pali Rohár wrote:
> SD8997 firmware sends TLV_TYPE_MAX_CONN with struct hw_spec_max_conn to
> inform kernel about maximum number of p2p connections and stations in AP
> mode.
>
> During initialization of SD8997 wifi chip kernel prints warning:
>
> mwifiex_sdio mmc0:0001:1: Unknown GET_HW_SPEC TLV type: 0x217
>
> This patch adds support for parsing TLV_TYPE_MAX_CONN (0x217) and sets
> appropriate cfg80211 member 'max_ap_assoc_sta' from retrieved structure.
>
> It allows userspace to retrieve NL80211_ATTR_MAX_AP_ASSOC_STA attribute.
>
> Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Hello Kalle and Ganapathi, could you please review this patch?
> ---
> drivers/net/wireless/marvell/mwifiex/cfg80211.c | 5 +++++
> drivers/net/wireless/marvell/mwifiex/cmdevt.c | 12 ++++++++++++
> drivers/net/wireless/marvell/mwifiex/fw.h | 8 ++++++++
> drivers/net/wireless/marvell/mwifiex/main.h | 1 +
> 4 files changed, 26 insertions(+)
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
> index 12bfd653a..7998e91c9 100644
> --- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
> +++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
> @@ -4339,6 +4339,11 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
> wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
> wiphy->n_iface_combinations = 1;
>
> + if (adapter->max_sta_conn > adapter->max_p2p_conn)
> + wiphy->max_ap_assoc_sta = adapter->max_sta_conn;
> + else
> + wiphy->max_ap_assoc_sta = adapter->max_p2p_conn;
> +
> /* Initialize cipher suits */
> wiphy->cipher_suites = mwifiex_cipher_suites;
> wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
> diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> index 589cc5eb1..d068b9075 100644
> --- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> +++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> @@ -1495,6 +1495,7 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
> struct mwifiex_adapter *adapter = priv->adapter;
> struct mwifiex_ie_types_header *tlv;
> struct hw_spec_api_rev *api_rev;
> + struct hw_spec_max_conn *max_conn;
> u16 resp_size, api_id;
> int i, left_len, parsed_len = 0;
>
> @@ -1604,6 +1605,17 @@ int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
> break;
> }
> break;
> + case TLV_TYPE_MAX_CONN:
> + max_conn = (struct hw_spec_max_conn *)tlv;
> + adapter->max_p2p_conn = max_conn->max_p2p_conn;
> + adapter->max_sta_conn = max_conn->max_sta_conn;
> + mwifiex_dbg(adapter, INFO,
> + "max p2p connections: %u\n",
> + adapter->max_p2p_conn);
> + mwifiex_dbg(adapter, INFO,
> + "max sta connections: %u\n",
> + adapter->max_sta_conn);
> + break;
> default:
> mwifiex_dbg(adapter, FATAL,
> "Unknown GET_HW_SPEC TLV type: %#x\n",
> diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
> index 6f86f5b96..8047e3078 100644
> --- a/drivers/net/wireless/marvell/mwifiex/fw.h
> +++ b/drivers/net/wireless/marvell/mwifiex/fw.h
> @@ -220,6 +220,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
> #define TLV_TYPE_BSS_MODE (PROPRIETARY_TLV_BASE_ID + 206)
> #define TLV_TYPE_RANDOM_MAC (PROPRIETARY_TLV_BASE_ID + 236)
> #define TLV_TYPE_CHAN_ATTR_CFG (PROPRIETARY_TLV_BASE_ID + 237)
> +#define TLV_TYPE_MAX_CONN (PROPRIETARY_TLV_BASE_ID + 279)
>
> #define MWIFIEX_TX_DATA_BUF_SIZE_2K 2048
>
> @@ -2388,4 +2389,11 @@ struct mwifiex_opt_sleep_confirm {
> __le16 action;
> __le16 resp_ctrl;
> } __packed;
> +
> +struct hw_spec_max_conn {
> + struct mwifiex_ie_types_header header;
> + u8 max_p2p_conn;
> + u8 max_sta_conn;
> +} __packed;
> +
> #endif /* !_MWIFIEX_FW_H_ */
> diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
> index afaffc325..5923c5c14 100644
> --- a/drivers/net/wireless/marvell/mwifiex/main.h
> +++ b/drivers/net/wireless/marvell/mwifiex/main.h
> @@ -1022,6 +1022,7 @@ struct mwifiex_adapter {
> bool ext_scan;
> u8 fw_api_ver;
> u8 key_api_major_ver, key_api_minor_ver;
> + u8 max_p2p_conn, max_sta_conn;
> struct memory_type_mapping *mem_type_mapping_tbl;
> u8 num_mem_types;
> bool scan_chan_gap_enabled;
> --
> 2.20.1
>
