linux-kernel - Re: [PATCH v2] wifi: mwifiex: fix STA cannot connect to AP

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Date:   Mon, 11 Dec 2023 14:29:37 -0300
From:   Rafael Beims <rafael@...ms.me>
To:     David Lin <yu-hao.lin@....com>, linux-wireless@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, briannorris@...omium.org,
        kvalo@...nel.org, francesco@...cini.it, tsung-hsien.hsieh@....com,
        stable@...r.kernel.org
Subject: Re: [PATCH v2] wifi: mwifiex: fix STA cannot connect to AP

On 08/12/2023 20:41, David Lin wrote:
> AP BSSID configuration is missing at AP start.
> Without this fix, FW returns STA interface MAC address after first init.
> When hostapd restarts, it gets MAC address from netdev before driver
> sets STA MAC to netdev again. Now MAC address between hostapd and net
> interface are different causes STA cannot connect to AP.
> After that MAC address of uap0 mlan0 become the same. And issue
> disappears after following hostapd restart (another issue is AP/STA MAC
> address become the same).
> This patch fixes the issue cleanly.
>
> Signed-off-by: David Lin <yu-hao.lin@....com>
> Fixes: 12190c5d80bd ("mwifiex: add cfg80211 start_ap and stop_ap handlers")
> Cc: stable@...r.kernel.org
>
> ---
>
> v2:
>     - v1 was a not finished patch that was send to the LKML by mistake
> ---
>   drivers/net/wireless/marvell/mwifiex/cfg80211.c | 2 ++
>   drivers/net/wireless/marvell/mwifiex/fw.h       | 1 +
>   drivers/net/wireless/marvell/mwifiex/ioctl.h    | 1 +
>   drivers/net/wireless/marvell/mwifiex/uap_cmd.c  | 8 ++++++++
>   4 files changed, 12 insertions(+)
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
> index 7a15ea8072e6..3604abcbcff9 100644
> --- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
> +++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
> @@ -2047,6 +2047,8 @@ static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy,
>   
>   	mwifiex_set_sys_config_invalid_data(bss_cfg);
>   
> +	memcpy(bss_cfg->mac_addr, priv->curr_addr, ETH_ALEN);
> +
>   	if (params->beacon_interval)
>   		bss_cfg->beacon_period = params->beacon_interval;
>   	if (params->dtim_period)
> diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
> index 8e6db904e5b2..62f3c9a52a1d 100644
> --- a/drivers/net/wireless/marvell/mwifiex/fw.h
> +++ b/drivers/net/wireless/marvell/mwifiex/fw.h
> @@ -165,6 +165,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
>   #define TLV_TYPE_STA_MAC_ADDR       (PROPRIETARY_TLV_BASE_ID + 32)
>   #define TLV_TYPE_BSSID              (PROPRIETARY_TLV_BASE_ID + 35)
>   #define TLV_TYPE_CHANNELBANDLIST    (PROPRIETARY_TLV_BASE_ID + 42)
> +#define TLV_TYPE_UAP_MAC_ADDRESS    (PROPRIETARY_TLV_BASE_ID + 43)
>   #define TLV_TYPE_UAP_BEACON_PERIOD  (PROPRIETARY_TLV_BASE_ID + 44)
>   #define TLV_TYPE_UAP_DTIM_PERIOD    (PROPRIETARY_TLV_BASE_ID + 45)
>   #define TLV_TYPE_UAP_BCAST_SSID     (PROPRIETARY_TLV_BASE_ID + 48)
> diff --git a/drivers/net/wireless/marvell/mwifiex/ioctl.h b/drivers/net/wireless/marvell/mwifiex/ioctl.h
> index 091e7ca79376..e8825f302de8 100644
> --- a/drivers/net/wireless/marvell/mwifiex/ioctl.h
> +++ b/drivers/net/wireless/marvell/mwifiex/ioctl.h
> @@ -107,6 +107,7 @@ struct mwifiex_uap_bss_param {
>   	u8 qos_info;
>   	u8 power_constraint;
>   	struct mwifiex_types_wmm_info wmm_info;
> +	u8 mac_addr[ETH_ALEN];
>   };
>   
>   enum {
> diff --git a/drivers/net/wireless/marvell/mwifiex/uap_cmd.c b/drivers/net/wireless/marvell/mwifiex/uap_cmd.c
> index e78a201cd150..491e36611909 100644
> --- a/drivers/net/wireless/marvell/mwifiex/uap_cmd.c
> +++ b/drivers/net/wireless/marvell/mwifiex/uap_cmd.c
> @@ -468,6 +468,7 @@ void mwifiex_config_uap_11d(struct mwifiex_private *priv,
>   static int
>   mwifiex_uap_bss_param_prepare(u8 *tlv, void *cmd_buf, u16 *param_size)
>   {
> +	struct host_cmd_tlv_mac_addr *mac_tlv;
>   	struct host_cmd_tlv_dtim_period *dtim_period;
>   	struct host_cmd_tlv_beacon_period *beacon_period;
>   	struct host_cmd_tlv_ssid *ssid;
> @@ -487,6 +488,13 @@ mwifiex_uap_bss_param_prepare(u8 *tlv, void *cmd_buf, u16 *param_size)
>   	int i;
>   	u16 cmd_size = *param_size;
>   
> +	mac_tlv = (struct host_cmd_tlv_mac_addr *)tlv;
> +	mac_tlv->header.type = cpu_to_le16(TLV_TYPE_UAP_MAC_ADDRESS);
> +	mac_tlv->header.len = cpu_to_le16(ETH_ALEN);
> +	memcpy(mac_tlv->mac_addr, bss_cfg->mac_addr, ETH_ALEN);
> +	cmd_size += sizeof(struct host_cmd_tlv_mac_addr);
> +	tlv += sizeof(struct host_cmd_tlv_mac_addr);
> +
>   	if (bss_cfg->ssid.ssid_len) {
>   		ssid = (struct host_cmd_tlv_ssid *)tlv;
>   		ssid->header.type = cpu_to_le16(TLV_TYPE_UAP_SSID);
>
> base-commit: 783004b6dbda2cfe9a552a4cc9c1d168a2068f6c


Tested-by: Rafael Beims <rafael.beims@...adex.com> # Verdin iMX8MP / 
SD8997 SD


Rafael