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mwl8k: enable multi-BSS AP operation 

As follows:
- GET_HW_SPEC is now responsible for setting
  priv->{ap,sta}_macids_supported, which are bitmasks of supported
  macids for AP and STA mode.  (Typically, STA firmware images will
  support only one macid, #0, in STA mode, and AP firmware images
  will support macids #0-7, in AP mode.)
- Our wiphy ->interfaces_modes is now set based on the non-zero-ness
  of these two bitmasks.
- We main priv->macids_used, a bitmask of which macids are currently
  in use.  ->add_interface() will assign the lowest free macid for
  this interface type as it is created, or bail out if there are no
  more free macids to assign.  ->delete_interface() will mark the
  macid as being free again.

This enables the multi-BSS code added in the previous commits.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Lennert Buytenhek 2010-01-12 13:51:30 +01:00 committed by John W. Linville
parent aa21d0f69a
commit ee0ddf1865
1 changed files with 56 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
drivers/net/wireless/mwl8k.c
View File

@ -147,6 +147,8 @@ struct mwl8k_priv {
struct ieee80211_supported_band band_50;
struct ieee80211_channel channels_50[4];
struct ieee80211_rate rates_50[9];
u32 ap_macids_supported;
u32 sta_macids_supported;
/* firmware access */
struct mutex fw_mutex;
@ -161,6 +163,7 @@ struct mwl8k_priv {
struct completion *tx_wait;
/* List of interfaces. */
u32 macids_used;
struct list_head vif_list;
/* power management status cookie from firmware */
@ -1786,6 +1789,8 @@ static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
priv->fw_rev = le32_to_cpu(cmd->fw_rev);
priv->hw_rev = cmd->hw_rev;
mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
priv->ap_macids_supported = 0x00000000;
priv->sta_macids_supported = 0x00000001;
}
kfree(cmd);
@ -1840,6 +1845,8 @@ static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
priv->fw_rev = le32_to_cpu(cmd->fw_rev);
priv->hw_rev = cmd->hw_rev;
mwl8k_setup_2ghz_band(hw);
priv->ap_macids_supported = 0x000000ff;
priv->sta_macids_supported = 0x00000000;
off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
iowrite32(cpu_to_le32(priv->txq[0].txd_dma), priv->sram + off);
@ -2759,16 +2766,33 @@ struct mwl8k_cmd_set_mac_addr {
};
} __attribute__((packed));
#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
#define MWL8K_MAC_TYPE_PRIMARY_AP 2
#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
#define MWL8K_MAC_TYPE_PRIMARY_AP 2
#define MWL8K_MAC_TYPE_SECONDARY_AP 3
static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u8 *mac)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
struct mwl8k_cmd_set_mac_addr *cmd;
int mac_type;
int rc;
mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
else
mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
} else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
else
mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
}
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
@ -2776,7 +2800,7 @@ static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
if (priv->ap_fw) {
cmd->mbss.mac_type = cpu_to_le16(MWL8K_MAC_TYPE_PRIMARY_AP);
cmd->mbss.mac_type = cpu_to_le16(mac_type);
memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
} else {
memcpy(cmd->mac_addr, mac, ETH_ALEN);
@ -3271,12 +3295,8 @@ static int mwl8k_add_interface(struct ieee80211_hw *hw,
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mwl8k_vif;
/*
* We only support one active interface at a time.
*/
if (!list_empty(&priv->vif_list))
return -EBUSY;
u32 macids_supported;
int macid;
/*
* Reject interface creation if sniffer mode is active, as
@ -3290,11 +3310,27 @@ static int mwl8k_add_interface(struct ieee80211_hw *hw,
return -EINVAL;
}
switch (vif->type) {
case NL80211_IFTYPE_AP:
macids_supported = priv->ap_macids_supported;
break;
case NL80211_IFTYPE_STATION:
macids_supported = priv->sta_macids_supported;
break;
default:
return -EINVAL;
}
macid = ffs(macids_supported & ~priv->macids_used);
if (!macid--)
return -EBUSY;
/* Setup driver private area. */
mwl8k_vif = MWL8K_VIF(vif);
memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
mwl8k_vif->vif = vif;
mwl8k_vif->macid = 0;
mwl8k_vif->macid = macid;
mwl8k_vif->seqno = 0;
/* Set the mac address. */
@ -3303,6 +3339,7 @@ static int mwl8k_add_interface(struct ieee80211_hw *hw,
if (priv->ap_fw)
mwl8k_cmd_set_new_stn_add_self(hw, vif);
priv->macids_used |= 1 << mwl8k_vif->macid;
list_add_tail(&mwl8k_vif->list, &priv->vif_list);
return 0;
@ -3319,6 +3356,7 @@ static void mwl8k_remove_interface(struct ieee80211_hw *hw,
mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
priv->macids_used &= ~(1 << mwl8k_vif->macid);
list_del(&mwl8k_vif->list);
}
@ -4023,6 +4061,7 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
hw->vif_data_size = sizeof(struct mwl8k_vif);
hw->sta_data_size = sizeof(struct mwl8k_sta);
priv->macids_used = 0;
INIT_LIST_HEAD(&priv->vif_list);
/* Set default radio state and preamble */
@ -4094,12 +4133,8 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
rc = mwl8k_cmd_get_hw_spec_ap(hw);
if (!rc)
rc = mwl8k_cmd_set_hw_spec(hw);
hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_AP);
} else {
rc = mwl8k_cmd_get_hw_spec_sta(hw);
hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
}
if (rc) {
printk(KERN_ERR "%s: Cannot initialise firmware\n",
@ -4107,6 +4142,13 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
goto err_free_irq;
}
hw->wiphy->interface_modes = 0;
if (priv->ap_macids_supported)
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
if (priv->sta_macids_supported)
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
/* Turn radio off */
rc = mwl8k_cmd_radio_disable(hw);
if (rc) {