From a680400e8ac32adda81b5e2d7f23dfac63e064fe Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Mon, 4 Jan 2010 21:55:42 +0100 Subject: [PATCH] mwl8k: move ->peer_id from mwl8k_vif to mwl8k_sta For STA firmware, move the per-peer hardware station ID to the driver-private part of struct ieee80211_sta, where it belongs. (Since issuing a hardware station database maintenance command sleeps, we can't hold a reference to the ieee80211_sta * across the command, and since we won't know the station ID until after the command completes, we need to re-lookup the sta when the command is done to write the returned station ID back to its driver-private part.) Signed-off-by: Lennert Buytenhek Signed-off-by: John W. Linville --- drivers/net/wireless/mwl8k.c | 119 ++++++++++++++++++++++++------------------- 1 file changed, 67 insertions(+), 52 deletions(-) diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c index ed666b7..5b5cf93 100644 --- a/drivers/net/wireless/mwl8k.c +++ b/drivers/net/wireless/mwl8k.c @@ -211,15 +211,17 @@ struct mwl8k_vif { /* Local MAC address. */ u8 mac_addr[ETH_ALEN]; - /* Index into station database. Returned by UPDATE_STADB. */ - u8 peer_id; - /* Non AMPDU sequence number assigned by driver */ - u16 seqno; + u16 seqno; }; - #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv)) +struct mwl8k_sta { + /* Index into station database. Returned by UPDATE_STADB. */ + u8 peer_id; +}; +#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv)) + static const struct ieee80211_channel mwl8k_channels[] = { { .center_freq = 2412, .hw_value = 1, }, { .center_freq = 2417, .hw_value = 2, }, @@ -1402,7 +1404,10 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) tx->pkt_phys_addr = cpu_to_le32(dma); tx->pkt_len = cpu_to_le16(skb->len); tx->rate_info = 0; - tx->peer_id = mwl8k_vif->peer_id; + if (!priv->ap_fw && tx_info->control.sta != NULL) + tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id; + else + tx->peer_id = 0; wmb(); tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); @@ -2582,14 +2587,6 @@ static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) /* * CMD_UPDATE_STADB. */ -#define MWL8K_STA_DB_ADD_ENTRY 0 -#define MWL8K_STA_DB_MODIFY_ENTRY 1 -#define MWL8K_STA_DB_DEL_ENTRY 2 -#define MWL8K_STA_DB_FLUSH 3 - -/* Peer Entry flags - used to define the type of the peer node */ -#define MWL8K_PEER_TYPE_ACCESSPOINT 2 - struct ewc_ht_info { __le16 control1; __le16 control2; @@ -2640,12 +2637,17 @@ struct mwl8k_cmd_update_stadb { struct peer_capability_info peer_info; } __attribute__((packed)); -static int mwl8k_cmd_update_stadb(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, __u32 action, u8 *addr) +#define MWL8K_STA_DB_MODIFY_ENTRY 1 +#define MWL8K_STA_DB_DEL_ENTRY 2 + +/* Peer Entry flags - used to define the type of the peer node */ +#define MWL8K_PEER_TYPE_ACCESSPOINT 2 + +static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u8 *addr) { - struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); struct mwl8k_cmd_update_stadb *cmd; - struct peer_capability_info *peer_info; + struct peer_capability_info *p; int rc; cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); @@ -2654,37 +2656,38 @@ static int mwl8k_cmd_update_stadb(struct ieee80211_hw *hw, cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); cmd->header.length = cpu_to_le16(sizeof(*cmd)); + cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); + memcpy(cmd->peer_addr, addr, ETH_ALEN); - cmd->action = cpu_to_le32(action); - peer_info = &cmd->peer_info; + p = &cmd->peer_info; + p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; + p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); + memcpy(p->legacy_rates, mwl8k_rateids, sizeof(mwl8k_rateids)); + p->interop = 1; + p->amsdu_enabled = 0; + + rc = mwl8k_post_cmd(hw, &cmd->header); + kfree(cmd); + + return rc ? rc : p->station_id; +} + +static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u8 *addr) +{ + struct mwl8k_cmd_update_stadb *cmd; + int rc; + + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); + if (cmd == NULL) + return -ENOMEM; + + cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); + cmd->header.length = cpu_to_le16(sizeof(*cmd)); + cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); memcpy(cmd->peer_addr, addr, ETH_ALEN); - switch (action) { - case MWL8K_STA_DB_ADD_ENTRY: - case MWL8K_STA_DB_MODIFY_ENTRY: - /* Build peer_info block */ - peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; - peer_info->basic_caps = - cpu_to_le16(vif->bss_conf.assoc_capability); - memcpy(peer_info->legacy_rates, mwl8k_rateids, - sizeof(mwl8k_rateids)); - peer_info->interop = 1; - peer_info->amsdu_enabled = 0; - - rc = mwl8k_post_cmd(hw, &cmd->header); - if (rc == 0) - mv_vif->peer_id = peer_info->station_id; - - break; - - case MWL8K_STA_DB_DEL_ENTRY: - case MWL8K_STA_DB_FLUSH: - default: - rc = mwl8k_post_cmd(hw, &cmd->header); - if (rc == 0) - mv_vif->peer_id = 0; - break; - } + rc = mwl8k_post_cmd(hw, &cmd->header); kfree(cmd); return rc; @@ -3142,11 +3145,11 @@ static void mwl8k_sta_notify_worker(struct work_struct *work) { struct mwl8k_priv *priv = container_of(work, struct mwl8k_priv, sta_notify_worker); + struct ieee80211_hw *hw = priv->hw; spin_lock_bh(&priv->sta_notify_list_lock); while (!list_empty(&priv->sta_notify_list)) { struct mwl8k_sta_notify_item *s; - int action; s = list_entry(priv->sta_notify_list.next, struct mwl8k_sta_notify_item, list); @@ -3154,11 +3157,22 @@ static void mwl8k_sta_notify_worker(struct work_struct *work) spin_unlock_bh(&priv->sta_notify_list_lock); - if (s->cmd == STA_NOTIFY_ADD) - action = MWL8K_STA_DB_MODIFY_ENTRY; - else - action = MWL8K_STA_DB_DEL_ENTRY; - mwl8k_cmd_update_stadb(priv->hw, s->vif, action, s->addr); + if (s->cmd == STA_NOTIFY_ADD) { + int rc; + + rc = mwl8k_cmd_update_stadb_add(hw, s->vif, s->addr); + if (rc >= 0) { + struct ieee80211_sta *sta; + + rcu_read_lock(); + sta = ieee80211_find_sta(s->vif, s->addr); + if (sta != NULL) + MWL8K_STA(sta)->peer_id = rc; + rcu_read_unlock(); + } + } else { + mwl8k_cmd_update_stadb_del(hw, s->vif, s->addr); + } kfree(s); @@ -3448,6 +3462,7 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev, /* Set rssi and noise values to dBm */ hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM; hw->vif_data_size = sizeof(struct mwl8k_vif); + hw->sta_data_size = sizeof(struct mwl8k_sta); priv->vif = NULL; /* Set default radio state and preamble */ -- 2.7.4