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mwl8k: add support for enabling hardware sniffer mode 

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Lennert Buytenhek 2009-10-22 20:20:32 +02:00 committed by John W. Linville
parent 5dfd3e2c6f
commit a43c49a817
1 changed files with 63 additions and 3 deletions
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66
drivers/net/wireless/mwl8k.c
View File

@ -173,6 +173,7 @@ struct mwl8k_priv {
bool radio_on;
bool radio_short_preamble;
bool sniffer_enabled;
bool wmm_enabled;
/* XXX need to convert this to handle multiple interfaces */
@ -2560,6 +2561,18 @@ static int mwl8k_add_interface(struct ieee80211_hw *hw,
if (conf->type != NL80211_IFTYPE_STATION)
return -EINVAL;
/*
* Reject interface creation if sniffer mode is active, as
* STA operation is mutually exclusive with hardware sniffer
* mode.
*/
if (priv->sniffer_enabled) {
printk(KERN_INFO "%s: unable to create STA "
"interface due to sniffer mode being enabled\n",
wiphy_name(hw->wiphy));
return -EINVAL;
}
/* Clean out driver private area */
mwl8k_vif = MWL8K_VIF(conf->vif);
memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
@ -2730,13 +2743,56 @@ static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
return (unsigned long)cmd;
}
static int
mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags)
{
struct mwl8k_priv *priv = hw->priv;
/*
* Hardware sniffer mode is mutually exclusive with STA
* operation, so refuse to enable sniffer mode if a STA
* interface is active.
*/
if (priv->vif != NULL) {
if (net_ratelimit())
printk(KERN_INFO "%s: not enabling sniffer "
"mode because STA interface is active\n",
wiphy_name(hw->wiphy));
return 0;
}
if (!priv->sniffer_enabled) {
if (mwl8k_enable_sniffer(hw, 1))
return 0;
priv->sniffer_enabled = true;
}
*total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
FIF_OTHER_BSS;
return 1;
}
static void mwl8k_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_pkt *cmd;
struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
/*
* Enable hardware sniffer mode if FIF_CONTROL or
* FIF_OTHER_BSS is requested.
*/
if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
kfree(cmd);
return;
}
/* Clear unsupported feature flags */
*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
@ -2744,6 +2800,11 @@ static void mwl8k_configure_filter(struct ieee80211_hw *hw,
if (mwl8k_fw_lock(hw))
return;
if (priv->sniffer_enabled) {
mwl8k_enable_sniffer(hw, 0);
priv->sniffer_enabled = false;
}
if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
/*
@ -2769,8 +2830,6 @@ static void mwl8k_configure_filter(struct ieee80211_hw *hw,
}
}
cmd = (void *)(unsigned long)multicast;
/*
* If FIF_ALLMULTI is being requested, throw away the command
* packet that ->prepare_multicast() built and replace it with
@ -2929,6 +2988,7 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
priv = hw->priv;
priv->hw = hw;
priv->pdev = pdev;
priv->sniffer_enabled = false;
priv->wmm_enabled = false;
priv->pending_tx_pkts = 0;