From 8a933964e8a4da3f28b46ac43d2e57eecfd833f6 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Wed, 18 Nov 2015 06:59:17 +0100 Subject: [PATCH] ath10k: remove txmode from skb_cb It was wasteful to keep it in the struct because it can be passed as function argument down the tx path. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/core.h | 1 - drivers/net/wireless/ath/ath10k/htt.h | 4 ++- drivers/net/wireless/ath/ath10k/htt_tx.c | 9 +++--- drivers/net/wireless/ath/ath10k/mac.c | 40 ++++++++++++++++++------ 4 files changed, 38 insertions(+), 16 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 73737ea06ccd..063c34ac76d2 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -85,7 +85,6 @@ struct ath10k_skb_cb { dma_addr_t paddr; u8 eid; u8 vdev_id; - enum ath10k_hw_txrx_mode txmode; struct { u8 tid; diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index 2b87ed6458db..47ca048feaf0 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -1602,7 +1602,9 @@ void __ath10k_htt_tx_dec_pending(struct ath10k_htt *htt, bool limit_mgmt_desc); int ath10k_htt_tx_alloc_msdu_id(struct ath10k_htt *htt, struct sk_buff *skb); void ath10k_htt_tx_free_msdu_id(struct ath10k_htt *htt, u16 msdu_id); int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *); -int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *); +int ath10k_htt_tx(struct ath10k_htt *htt, + enum ath10k_hw_txrx_mode txmode, + struct sk_buff *msdu); void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar, struct sk_buff *skb); diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c index b57335d47c78..f6fb4f131542 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -532,7 +532,8 @@ err: return res; } -int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) +int ath10k_htt_tx(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode, + struct sk_buff *msdu) { struct ath10k *ar = htt->ar; struct device *dev = ar->dev; @@ -584,7 +585,7 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) ieee80211_has_protected(hdr->frame_control)) { skb_put(msdu, IEEE80211_CCMP_MIC_LEN); } else if (!skb_cb->htt.nohwcrypt && - skb_cb->txmode == ATH10K_HW_TXRX_RAW && + txmode == ATH10K_HW_TXRX_RAW && ieee80211_has_protected(hdr->frame_control)) { skb_put(msdu, IEEE80211_CCMP_MIC_LEN); } @@ -597,7 +598,7 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) goto err_free_msdu_id; } - switch (skb_cb->txmode) { + switch (txmode) { case ATH10K_HW_TXRX_RAW: case ATH10K_HW_TXRX_NATIVE_WIFI: flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT; @@ -626,7 +627,7 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) frags_paddr = skb_cb->htt.txbuf_paddr; } - flags0 |= SM(skb_cb->txmode, HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); + flags0 |= SM(txmode, HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); break; case ATH10K_HW_TXRX_MGMT: flags0 |= SM(ATH10K_HW_TXRX_MGMT, diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index e905722f17c1..fd4c13507790 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -3335,24 +3335,24 @@ unlock: return ret; } -static void ath10k_mac_tx(struct ath10k *ar, struct sk_buff *skb) +static void ath10k_mac_tx(struct ath10k *ar, enum ath10k_hw_txrx_mode txmode, + struct sk_buff *skb) { - struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb); struct ath10k_htt *htt = &ar->htt; int ret = 0; - switch (cb->txmode) { + switch (txmode) { case ATH10K_HW_TXRX_RAW: case ATH10K_HW_TXRX_NATIVE_WIFI: case ATH10K_HW_TXRX_ETHERNET: - ret = ath10k_htt_tx(htt, skb); + ret = ath10k_htt_tx(htt, txmode, skb); break; case ATH10K_HW_TXRX_MGMT: if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX, ar->fw_features)) ret = ath10k_mac_tx_wmi_mgmt(ar, skb); else if (ar->htt.target_version_major >= 3) - ret = ath10k_htt_tx(htt, skb); + ret = ath10k_htt_tx(htt, txmode, skb); else ret = ath10k_htt_mgmt_tx(htt, skb); break; @@ -3382,9 +3382,13 @@ void ath10k_offchan_tx_work(struct work_struct *work) { struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work); struct ath10k_peer *peer; + struct ath10k_vif *arvif; struct ieee80211_hdr *hdr; + struct ieee80211_vif *vif; + struct ieee80211_sta *sta; struct sk_buff *skb; const u8 *peer_addr; + enum ath10k_hw_txrx_mode txmode; int vdev_id; int ret; unsigned long time_left; @@ -3434,7 +3438,22 @@ void ath10k_offchan_tx_work(struct work_struct *work) ar->offchan_tx_skb = skb; spin_unlock_bh(&ar->data_lock); - ath10k_mac_tx(ar, skb); + /* It's safe to access vif and sta - conf_mutex guarantees that + * sta_state() and remove_interface() are locked exclusively + * out wrt to this offchannel worker. + */ + arvif = ath10k_get_arvif(ar, vdev_id); + if (arvif) { + vif = arvif->vif; + sta = ieee80211_find_sta(vif, peer_addr); + } else { + vif = NULL; + sta = NULL; + } + + txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb); + + ath10k_mac_tx(ar, txmode, skb); time_left = wait_for_completion_timeout(&ar->offchan_tx_completed, 3 * HZ); @@ -3656,20 +3675,21 @@ static void ath10k_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif = info->control.vif; struct ieee80211_sta *sta = control->sta; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + enum ath10k_hw_txrx_mode txmode; /* We should disable CCK RATE due to P2P */ if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE) ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n"); + txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb); + ATH10K_SKB_CB(skb)->htt.is_offchan = false; ATH10K_SKB_CB(skb)->htt.freq = 0; ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr); ATH10K_SKB_CB(skb)->htt.nohwcrypt = !ath10k_tx_h_use_hwcrypto(vif, skb); ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif); - ATH10K_SKB_CB(skb)->txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, - skb); - switch (ATH10K_SKB_CB(skb)->txmode) { + switch (txmode) { case ATH10K_HW_TXRX_MGMT: case ATH10K_HW_TXRX_NATIVE_WIFI: ath10k_tx_h_nwifi(hw, skb); @@ -3706,7 +3726,7 @@ static void ath10k_tx(struct ieee80211_hw *hw, } } - ath10k_mac_tx(ar, skb); + ath10k_mac_tx(ar, txmode, skb); } /* Must not be called with conf_mutex held as workers can use that also. */ -- 2.20.1