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Date: Fri, 14 Feb 2014 15:32:36 -0600
From: Larry Finger <Larry.Finger@...inger.net>
To: Peter Wu <lekensteyn@...il.com>,
Chaoming_Li <chaoming_li@...lsil.com.cn>
CC: linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] rtlwifi: properly apply filter flags
On 02/14/2014 12:03 PM, Peter Wu wrote:
> commit 0baa0fd76f3f5a134461d6cf30294f6bb1bb824c
> ("rtlwifi: Convert core routines for addition of rtl8192se and
> rtl8192de") removed setting HW_VAR_RCR, HW_VAR_MGT_FILTER and
> HW_VAR_CTRL_FILTER. The last two are probably done because some hardware
> does not support them. The first is probably a mistake. This patch adds
> the missing set_hw_reg call.
>
> For PCI support, rx_conf is not touched directly. Instead, get_hw_reg is
> used to abstract between receive_config (for PCI) and rx_conf (for USB).
>
> This was tested on a 10ec:8176 Realtek RTL8188CE (according to the
> label on the mini-PCIe card). Before this patch, `iw wlan0 set monitor
> otherbss` did not capture frames from other BSS's. After this patch, it
> does print packets.
>
> Tested-by: Peter Wu <lekensteyn@...il.com>
> Signed-off-by: Peter Wu <lekensteyn@...il.com>
> ---
Acked-by: Larry Finger <Larry.Finger@...inger.net>
Thanks,
Larry
> drivers/net/wireless/rtlwifi/core.c | 52 +++++++++++++++++++++----------------
> 1 file changed, 30 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/net/wireless/rtlwifi/core.c b/drivers/net/wireless/rtlwifi/core.c
> index 2d337a0..6df4df0 100644
> --- a/drivers/net/wireless/rtlwifi/core.c
> +++ b/drivers/net/wireless/rtlwifi/core.c
> @@ -475,20 +475,40 @@ static void rtl_op_configure_filter(struct ieee80211_hw *hw,
> {
> struct rtl_priv *rtlpriv = rtl_priv(hw);
> struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
> + u32 rx_conf;
>
> *new_flags &= RTL_SUPPORTED_FILTERS;
> if (!changed_flags)
> return;
>
> + /* if ssid not set to hw don't check bssid
> + * here just used for linked scanning, & linked
> + * and nolink check bssid is set in set network_type */
> + if ((changed_flags & FIF_BCN_PRBRESP_PROMISC) &&
> + (mac->link_state >= MAC80211_LINKED)) {
> + if (mac->opmode != NL80211_IFTYPE_AP &&
> + mac->opmode != NL80211_IFTYPE_MESH_POINT) {
> + if (*new_flags & FIF_BCN_PRBRESP_PROMISC) {
> + rtlpriv->cfg->ops->set_chk_bssid(hw, false);
> + } else {
> + rtlpriv->cfg->ops->set_chk_bssid(hw, true);
> + }
> + }
> + }
> +
> + /* must be called after set_chk_bssid since that function modifies the
> + * RCR register too. */
> + rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *)(&rx_conf));
> +
> /*TODO: we disable broadcase now, so enable here */
> if (changed_flags & FIF_ALLMULTI) {
> if (*new_flags & FIF_ALLMULTI) {
> - mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AM] |
> + rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AM] |
> rtlpriv->cfg->maps[MAC_RCR_AB];
> RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
> "Enable receive multicast frame\n");
> } else {
> - mac->rx_conf &= ~(rtlpriv->cfg->maps[MAC_RCR_AM] |
> + rx_conf &= ~(rtlpriv->cfg->maps[MAC_RCR_AM] |
> rtlpriv->cfg->maps[MAC_RCR_AB]);
> RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
> "Disable receive multicast frame\n");
> @@ -497,39 +517,25 @@ static void rtl_op_configure_filter(struct ieee80211_hw *hw,
>
> if (changed_flags & FIF_FCSFAIL) {
> if (*new_flags & FIF_FCSFAIL) {
> - mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACRC32];
> + rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACRC32];
> RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
> "Enable receive FCS error frame\n");
> } else {
> - mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACRC32];
> + rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACRC32];
> RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
> "Disable receive FCS error frame\n");
> }
> }
>
> - /* if ssid not set to hw don't check bssid
> - * here just used for linked scanning, & linked
> - * and nolink check bssid is set in set network_type */
> - if ((changed_flags & FIF_BCN_PRBRESP_PROMISC) &&
> - (mac->link_state >= MAC80211_LINKED)) {
> - if (mac->opmode != NL80211_IFTYPE_AP &&
> - mac->opmode != NL80211_IFTYPE_MESH_POINT) {
> - if (*new_flags & FIF_BCN_PRBRESP_PROMISC) {
> - rtlpriv->cfg->ops->set_chk_bssid(hw, false);
> - } else {
> - rtlpriv->cfg->ops->set_chk_bssid(hw, true);
> - }
> - }
> - }
>
> if (changed_flags & FIF_CONTROL) {
> if (*new_flags & FIF_CONTROL) {
> - mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACF];
> + rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACF];
>
> RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
> "Enable receive control frame\n");
> } else {
> - mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACF];
> + rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACF];
> RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
> "Disable receive control frame\n");
> }
> @@ -537,15 +543,17 @@ static void rtl_op_configure_filter(struct ieee80211_hw *hw,
>
> if (changed_flags & FIF_OTHER_BSS) {
> if (*new_flags & FIF_OTHER_BSS) {
> - mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AAP];
> + rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AAP];
> RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
> "Enable receive other BSS's frame\n");
> } else {
> - mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_AAP];
> + rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_AAP];
> RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
> "Disable receive other BSS's frame\n");
> }
> }
> +
> + rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, (u8 *)(&rx_conf));
> }
> static int rtl_op_sta_add(struct ieee80211_hw *hw,
> struct ieee80211_vif *vif,
>
--
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