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Re: [PATCH 2/3] brcmfmac: Fix interoperating DPP and other encryption network access

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On Tue, Sep 20, 2022 at 7:04 PM Ian Lin <ian.lin@xxxxxxxxxxxx> wrote:
>
> From: Kurt Lee <kurt.lee@xxxxxxxxxxx>
>
> 1. If firmware supports 4-way handshake offload but not supports DPP
> 4-way offload, when user first connects encryption network, driver will
> set "sup_wpa 1" to firmware, but it will further result in DPP
> connection failure since firmware won't send EAPOL frame to host.
>
> 2. Fix DPP AP mode handling action frames.
>
> 3. For some firmware without fwsup support, the join procedure will be
> skipped due to "sup_wpa" iovar returning not-support. Check the fwsup
> feature before do such iovar.

It is not a good practice to fix multiple issues in one patch. Please
break this up.

>
> Signed-off-by: Kurt Lee <kurt.lee@xxxxxxxxxxx>
> Signed-off-by: Double Lo <double.lo@xxxxxxxxxxx>
> Signed-off-by: Chi-hsien Lin <chi-hsien.lin@xxxxxxxxxxx>
> Signed-off-by: Ian Lin <ian.lin@xxxxxxxxxxxx>
> ---
>  .../broadcom/brcm80211/brcmfmac/cfg80211.c    | 68 ++++++++++---------
>  .../broadcom/brcm80211/brcmfmac/p2p.c         |  5 ++
>  2 files changed, 42 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> index 4a8aceda8fe8..c0e184db0e5d 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> @@ -2128,44 +2128,50 @@ brcmf_cfg80211_connect(struct wiphy *wiphy, struct net_device *ndev,
>                 goto done;
>         }
>
> -       if (sme->crypto.psk &&
> -           profile->use_fwsup != BRCMF_PROFILE_FWSUP_SAE) {
> -               if (WARN_ON(profile->use_fwsup != BRCMF_PROFILE_FWSUP_NONE)) {
> -                       err = -EINVAL;
> -                       goto done;
> +       if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_FWSUP)) {
> +               if (sme->crypto.psk) {
> +                       if (profile->use_fwsup != BRCMF_PROFILE_FWSUP_SAE) {
> +                               if (WARN_ON(profile->use_fwsup !=
> +                                       BRCMF_PROFILE_FWSUP_NONE)) {
> +                                       err = -EINVAL;
> +                                       goto done;
> +                               }
> +                               brcmf_dbg(INFO, "using PSK offload\n");
> +                               profile->use_fwsup = BRCMF_PROFILE_FWSUP_PSK;
> +                       }
> +               } else {
> +                       profile->use_fwsup = BRCMF_PROFILE_FWSUP_NONE;
>                 }
> -               brcmf_dbg(INFO, "using PSK offload\n");
> -               profile->use_fwsup = BRCMF_PROFILE_FWSUP_PSK;
> -       }
>
> -       if (profile->use_fwsup != BRCMF_PROFILE_FWSUP_NONE) {
> -               /* enable firmware supplicant for this interface */
> -               err = brcmf_fil_iovar_int_set(ifp, "sup_wpa", 1);
> -               if (err < 0) {
> -                       bphy_err(drvr, "failed to enable fw supplicant\n");
> -                       goto done;
> +               if (profile->use_fwsup != BRCMF_PROFILE_FWSUP_NONE) {
> +                       /* enable firmware supplicant for this interface */
> +                       err = brcmf_fil_iovar_int_set(ifp, "sup_wpa", 1);
> +                       if (err < 0) {
> +                               bphy_err(drvr, "failed to enable fw supplicant\n");
> +                               goto done;
> +                       }
> +               } else {
> +                       err = brcmf_fil_iovar_int_set(ifp, "sup_wpa", 0);
>                 }
> -       }
>
> -       if (profile->use_fwsup == BRCMF_PROFILE_FWSUP_PSK)
> -               err = brcmf_set_pmk(ifp, sme->crypto.psk,
> -                                   BRCMF_WSEC_MAX_PSK_LEN);
> -       else if (profile->use_fwsup == BRCMF_PROFILE_FWSUP_SAE) {
> -               /* clean up user-space RSNE */
> -               err = brcmf_fil_iovar_data_set(ifp, "wpaie", NULL, 0);
> -               if (err) {
> -                       bphy_err(drvr, "failed to clean up user-space RSNE\n");
> -                       goto done;
> -               }
> -               err = brcmf_set_sae_password(ifp, sme->crypto.sae_pwd,
> -                                            sme->crypto.sae_pwd_len);
> -               if (!err && sme->crypto.psk)
> +               if (profile->use_fwsup == BRCMF_PROFILE_FWSUP_PSK)
>                         err = brcmf_set_pmk(ifp, sme->crypto.psk,
>                                             BRCMF_WSEC_MAX_PSK_LEN);
> +               else if (profile->use_fwsup == BRCMF_PROFILE_FWSUP_SAE) {
> +                       /* clean up user-space RSNE */
> +                       if (brcmf_fil_iovar_data_set(ifp, "wpaie", NULL, 0)) {
> +                               bphy_err(drvr, "failed to clean up user-space RSNE\n");
> +                               goto done;
> +                       }
> +                       err = brcmf_set_sae_password(ifp, sme->crypto.sae_pwd,
> +                                                    sme->crypto.sae_pwd_len);
> +                       if (!err && sme->crypto.psk)
> +                               err = brcmf_set_pmk(ifp, sme->crypto.psk,
> +                                                   BRCMF_WSEC_MAX_PSK_LEN);
> +               }
> +               if (err)
> +                       goto done;
>         }
> -       if (err)
> -               goto done;
> -
>         /* Join with specific BSSID and cached SSID
>          * If SSID is zero join based on BSSID only
>          */
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
> index 4636fc27e915..3d96ad872593 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
> @@ -1318,6 +1318,10 @@ static s32 brcmf_p2p_abort_action_frame(struct brcmf_cfg80211_info *cfg)
>         brcmf_dbg(TRACE, "Enter\n");
>
>         vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
> +
> +       if (!vif)
> +               vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
> +
>         err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe_abort", &int_val,
>                                         sizeof(s32));
>         if (err)
> @@ -1867,6 +1871,7 @@ bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg,
>         /* validate channel and p2p ies */
>         if (config_af_params.search_channel &&
>             IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) &&
> +           p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif &&
>             p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) {
>                 afx_hdl = &p2p->afx_hdl;
>                 afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel);
> --
> 2.25.0
>

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