[RFC] ath10k: add tx hw 802.11 encapsulation offloading support
游智鈞
hujy652 at gmail.com
Wed May 26 23:32:58 PDT 2021
> On Wed, May 26, 2021 at 2:23 AM Daniel Lenski <dlenski at gmail.com> wrote:
> >
> > On Mon, May 24, 2021 at 4:30 PM Zhijun You <hujy652 at gmail.com> wrote:
> > > Currently only implement for 32bit target with 3-addr AP and STA mode.
> >
> > Any reason this couldn't be implemented for 64bit targets?
> > It looks like the 2-line changes to ath10k_htt_tx_32 would simply need
> > copying to ath10k_htt_tx_64.
Here the 64bit target means the chip not the host CPU.
If you look at the core.c only WCN3990 has target_64bit set to true.
I don't have that specific chip to test.
Best,
Zhijun
On Wed, May 26, 2021 at 2:23 AM Daniel Lenski <dlenski at gmail.com> wrote:
>
> On Mon, May 24, 2021 at 4:30 PM Zhijun You <hujy652 at gmail.com> wrote:
> > Currently only implement for 32bit target with 3-addr AP and STA mode.
>
> Any reason this couldn't be implemented for 64bit targets?
> It looks like the 2-line changes to ath10k_htt_tx_32 would simply need
> copying to ath10k_htt_tx_64.
>
> I could test this on amd64 with QCA9377, if there are no other impediments.
>
> Dan
> > @@ -1436,15 +1439,17 @@ static int ath10k_htt_tx_32(struct ath10k_htt *htt,
> > txbuf_paddr = htt->txbuf.paddr +
> > (sizeof(struct ath10k_htt_txbuf_32) * msdu_id);
> >
> > - if ((ieee80211_is_action(hdr->frame_control) ||
> > - ieee80211_is_deauth(hdr->frame_control) ||
> > - ieee80211_is_disassoc(hdr->frame_control)) &&
> > - ieee80211_has_protected(hdr->frame_control)) {
> > - skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
> > - } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) &&
> > - txmode == ATH10K_HW_TXRX_RAW &&
> > - ieee80211_has_protected(hdr->frame_control)) {
> > - skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
> > + if (!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) {
> > + if ((ieee80211_is_action(hdr->frame_control) ||
> > + ieee80211_is_deauth(hdr->frame_control) ||
> > + ieee80211_is_disassoc(hdr->frame_control)) &&
> > + ieee80211_has_protected(hdr->frame_control)) {
> > + skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
> > + } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) &&
> > + txmode == ATH10K_HW_TXRX_RAW &&
> > + ieee80211_has_protected(hdr->frame_control)) {
> > + skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
> > + }
> > }
> >
> > skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
> > diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
> > index bb6c5ee43ac0..ee64039c3726 100644
> > --- a/drivers/net/wireless/ath/ath10k/mac.c
> > +++ b/drivers/net/wireless/ath/ath10k/mac.c
> > @@ -3703,12 +3703,16 @@ ath10k_mac_tx_h_get_txmode(struct ath10k *ar,
> > struct sk_buff *skb)
> > {
> > const struct ieee80211_hdr *hdr = (void *)skb->data;
> > + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
> > const struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb);
> > __le16 fc = hdr->frame_control;
> >
> > if (!vif || vif->type == NL80211_IFTYPE_MONITOR)
> > return ATH10K_HW_TXRX_RAW;
> >
> > + if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)
> > + return ATH10K_HW_TXRX_ETHERNET;
> > +
> > if (ieee80211_is_mgmt(fc))
> > return ATH10K_HW_TXRX_MGMT;
> >
> > @@ -3866,6 +3870,13 @@ static void ath10k_mac_tx_h_fill_cb(struct ath10k *ar,
> > bool noack = false;
> >
> > cb->flags = 0;
> > + cb->vif = vif;
> > + cb->txq = txq;
> > + cb->airtime_est = airtime;
> > +
> > + if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)
> > + return;
> > +
> > if (!ath10k_tx_h_use_hwcrypto(vif, skb))
> > cb->flags |= ATH10K_SKB_F_NO_HWCRYPT;
> >
> > @@ -3904,9 +3915,6 @@ static void ath10k_mac_tx_h_fill_cb(struct ath10k *ar,
> > cb->flags |= ATH10K_SKB_F_RAW_TX;
> > }
> >
> > - cb->vif = vif;
> > - cb->txq = txq;
> > - cb->airtime_est = airtime;
> > if (sta) {
> > arsta = (struct ath10k_sta *)sta->drv_priv;
> > spin_lock_bh(&ar->data_lock);
> > @@ -4015,6 +4023,9 @@ static int ath10k_mac_tx(struct ath10k *ar,
> > const struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb);
> > int ret;
> >
> > + if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)
> > + goto skip_encap;
> > +
> > /* 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");
> > @@ -4038,6 +4049,7 @@ static int ath10k_mac_tx(struct ath10k *ar,
> > }
> > }
> >
> > +skip_encap:
> > if (!noque_offchan && info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
> > if (!ath10k_mac_tx_frm_has_freq(ar)) {
> > ath10k_dbg(ar, ATH10K_DBG_MAC, "mac queued offchannel skb %pK len %d\n",
> > @@ -4087,6 +4099,7 @@ void ath10k_offchan_tx_work(struct work_struct *work)
> > int ret;
> > unsigned long time_left;
> > bool tmp_peer_created = false;
> > + struct ieee80211_tx_info *info;
> >
> > /* FW requirement: We must create a peer before FW will send out
> > * an offchannel frame. Otherwise the frame will be stuck and
> > @@ -4106,8 +4119,13 @@ void ath10k_offchan_tx_work(struct work_struct *work)
> > ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %pK len %d\n",
> > skb, skb->len);
> >
> > - hdr = (struct ieee80211_hdr *)skb->data;
> > - peer_addr = ieee80211_get_DA(hdr);
> > + info = IEEE80211_SKB_CB(skb);
> > + if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) {
> > + peer_addr = skb->data;
> > + } else {
> > + hdr = (struct ieee80211_hdr *)skb->data;
> > + peer_addr = ieee80211_get_DA(hdr);
> > + }
> >
> > spin_lock_bh(&ar->data_lock);
> > vdev_id = ar->scan.vdev_id;
> > @@ -4639,7 +4657,7 @@ static void ath10k_mac_op_tx(struct ieee80211_hw *hw,
> > struct ieee80211_vif *vif = info->control.vif;
> > struct ieee80211_sta *sta = control->sta;
> > struct ieee80211_txq *txq = NULL;
> > - struct ieee80211_hdr *hdr = (void *)skb->data;
> > + struct ieee80211_hdr *hdr;
> > enum ath10k_hw_txrx_mode txmode;
> > enum ath10k_mac_tx_path txpath;
> > bool is_htt;
> > @@ -4659,7 +4677,6 @@ static void ath10k_mac_op_tx(struct ieee80211_hw *hw,
> >
> > if (is_htt) {
> > spin_lock_bh(&ar->htt.tx_lock);
> > - is_presp = ieee80211_is_probe_resp(hdr->frame_control);
> >
> > ret = ath10k_htt_tx_inc_pending(htt);
> > if (ret) {
> > @@ -4670,14 +4687,19 @@ static void ath10k_mac_op_tx(struct ieee80211_hw *hw,
> > return;
> > }
> >
> > - ret = ath10k_htt_tx_mgmt_inc_pending(htt, is_mgmt, is_presp);
> > - if (ret) {
> > - ath10k_dbg(ar, ATH10K_DBG_MAC, "failed to increase tx mgmt pending count: %d, dropping\n",
> > - ret);
> > - ath10k_htt_tx_dec_pending(htt);
> > - spin_unlock_bh(&ar->htt.tx_lock);
> > - ieee80211_free_txskb(ar->hw, skb);
> > - return;
> > + if (is_mgmt) {
> > + hdr = (struct ieee80211_hdr *)skb->data;
> > + is_presp = ieee80211_is_probe_resp(hdr->frame_control);
> > +
> > + ret = ath10k_htt_tx_mgmt_inc_pending(htt, is_mgmt, is_presp);
> > + if (ret) {
> > + ath10k_dbg(ar, ATH10K_DBG_MAC, "failed to increase tx mgmt pending count: %d, dropping\n",
> > + ret);
> > + ath10k_htt_tx_dec_pending(htt);
> > + spin_unlock_bh(&ar->htt.tx_lock);
> > + ieee80211_free_txskb(ar->hw, skb);
> > + return;
> > + }
> > }
> > spin_unlock_bh(&ar->htt.tx_lock);
> > }
> > @@ -5441,6 +5463,36 @@ static int ath10k_mac_set_txbf_conf(struct ath10k_vif *arvif)
> > ar->wmi.vdev_param->txbf, value);
> > }
> >
> > +static void ath10k_mac_op_update_vif_offload(struct ieee80211_hw *hw,
> > + struct ieee80211_vif *vif)
> > +{
> > + struct ath10k *ar = hw->priv;
> > + struct ath10k_vif *arvif = (void *)vif->drv_priv;
> > + u32 vdev_param, param_value;
> > + int ret;
> > +
> > + if (!ar->ethernetmode ||
> > + (vif->type != NL80211_IFTYPE_STATION &&
> > + vif->type != NL80211_IFTYPE_AP))
> > + vif->offload_flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED;
> > +
> > + if (vif->offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED)
> > + param_value = ATH10K_HW_TXRX_ETHERNET;
> > + else
> > + param_value = ATH10K_HW_TXRX_NATIVE_WIFI;
> > +
> > + vdev_param = ar->wmi.vdev_param->tx_encap_type;
> > + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
> > + param_value);
> > +
> > + /* 10.X firmware does not support this VDEV parameter. Do not warn */
> > + if (ret && ret != -EOPNOTSUPP) {
> > + ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
> > + arvif->vdev_id, ret);
> > + vif->offload_flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED;
> > + }
> > +}
> > +
> > /*
> > * TODO:
> > * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
> > @@ -5634,15 +5686,7 @@ static int ath10k_add_interface(struct ieee80211_hw *hw,
> >
> > arvif->def_wep_key_idx = -1;
> >
> > - vdev_param = ar->wmi.vdev_param->tx_encap_type;
> > - ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
> > - ATH10K_HW_TXRX_NATIVE_WIFI);
> > - /* 10.X firmware does not support this VDEV parameter. Do not warn */
> > - if (ret && ret != -EOPNOTSUPP) {
> > - ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
> > - arvif->vdev_id, ret);
> > - goto err_vdev_delete;
> > - }
> > + ath10k_mac_op_update_vif_offload(hw, vif);
> >
> > /* Configuring number of spatial stream for monitor interface is causing
> > * target assert in qca9888 and qca6174.
> > @@ -9327,6 +9371,7 @@ static const struct ieee80211_ops ath10k_ops = {
> > .config = ath10k_config,
> > .add_interface = ath10k_add_interface,
> > .remove_interface = ath10k_remove_interface,
> > + .update_vif_offload = ath10k_mac_op_update_vif_offload,
> > .configure_filter = ath10k_configure_filter,
> > .bss_info_changed = ath10k_bss_info_changed,
> > .set_coverage_class = ath10k_mac_op_set_coverage_class,
> > @@ -9936,6 +9981,8 @@ int ath10k_mac_register(struct ath10k *ar)
> > ieee80211_hw_set(ar->hw, QUEUE_CONTROL);
> > ieee80211_hw_set(ar->hw, SUPPORTS_TX_FRAG);
> > ieee80211_hw_set(ar->hw, REPORTS_LOW_ACK);
> > + if (ar->ethernetmode)
> > + ieee80211_hw_set(ar->hw, SUPPORTS_TX_ENCAP_OFFLOAD);
> >
> > if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
> > ieee80211_hw_set(ar->hw, SW_CRYPTO_CONTROL);
> > diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c
> > index 7c9ea0c073d8..5876381f27cd 100644
> > --- a/drivers/net/wireless/ath/ath10k/txrx.c
> > +++ b/drivers/net/wireless/ath/ath10k/txrx.c
> > @@ -51,6 +51,7 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
> > struct ath10k_txq *artxq;
> > struct sk_buff *msdu;
> > u8 flags;
> > + struct ieee80211_vif *vif;
> >
> > ath10k_dbg(ar, ATH10K_DBG_HTT,
> > "htt tx completion msdu_id %u status %d\n",
> > @@ -80,6 +81,8 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
> > }
> >
> > flags = skb_cb->flags;
> > + vif = skb_cb->vif;
> > +
> > ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id);
> > ath10k_htt_tx_dec_pending(htt);
> > if (htt->num_pending_tx == 0)
> > @@ -130,7 +133,10 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
> > info->status.is_valid_ack_signal = true;
> > }
> >
> > - ieee80211_tx_status(htt->ar->hw, msdu);
> > + if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)
> > + ieee80211_tx_status_8023(htt->ar->hw, vif, msdu);
> > + else
> > + ieee80211_tx_status(htt->ar->hw, msdu);
> > /* we do not own the msdu anymore */
> >
> > return 0;
> > --
> > 2.25.1
> >
> >
> > _______________________________________________
> > ath10k mailing list
> > ath10k at lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/ath10k
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