[PATCH 106/379][SRU][OEM-5.6] ath11k: add tx hw 802.11 encapsulation offloading support
You-Sheng Yang
vicamo.yang at canonical.com
Wed Dec 23 08:47:19 UTC 2020
From: John Crispin <john at phrozen.org>
BugLink: https://bugs.launchpad.net/bugs/1879633
This patch adds support for ethernet rxtx mode to the driver. The feature
is enabled via a new module parameter. If enabled to driver will enable
the feature on a per vif basis if all other requirements were met.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli at datto.com>
Signed-off-by: John Crispin <john at phrozen.org>
Signed-off-by: Kalle Valo <kvalo at codeaurora.org>
Link: https://lore.kernel.org/r/20200430152814.18481-1-john@phrozen.org
(cherry picked from commit e7f33e0c52c0df42f817a8468bf55be6648f9b5f)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
drivers/net/wireless/ath/ath11k/core.h | 5 +++
drivers/net/wireless/ath/ath11k/dp_tx.c | 17 +++++++--
drivers/net/wireless/ath/ath11k/mac.c | 47 ++++++++++++++++++++-----
drivers/net/wireless/ath/ath11k/wmi.h | 3 ++
4 files changed, 60 insertions(+), 12 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 33237eaf0371..70ec544eee67 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -60,9 +60,14 @@ static inline enum wme_ac ath11k_tid_to_ac(u32 tid)
WME_AC_VO);
}
+enum ath11k_skb_flags {
+ ATH11K_SKB_HW_80211_ENCAP = BIT(0),
+};
+
struct ath11k_skb_cb {
dma_addr_t paddr;
u8 eid;
+ u8 flags;
struct ath11k *ar;
struct ieee80211_vif *vif;
} __packed;
diff --git a/drivers/net/wireless/ath/ath11k/dp_tx.c b/drivers/net/wireless/ath/ath11k/dp_tx.c
index 59018ccb14da..41c990aec6b7 100644
--- a/drivers/net/wireless/ath/ath11k/dp_tx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_tx.c
@@ -12,7 +12,11 @@
static enum hal_tcl_encap_type
ath11k_dp_tx_get_encap_type(struct ath11k_vif *arvif, struct sk_buff *skb)
{
- /* TODO: Determine encap type based on vif_type and configuration */
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+
+ if (tx_info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP)
+ return HAL_TCL_ENCAP_TYPE_ETHERNET;
+
return HAL_TCL_ENCAP_TYPE_NATIVE_WIFI;
}
@@ -36,8 +40,11 @@ static void ath11k_dp_tx_encap_nwifi(struct sk_buff *skb)
static u8 ath11k_dp_tx_get_tid(struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
+ struct ath11k_skb_cb *cb = ATH11K_SKB_CB(skb);
- if (!ieee80211_is_data_qos(hdr->frame_control))
+ if (cb->flags & ATH11K_SKB_HW_80211_ENCAP)
+ return skb->priority & IEEE80211_QOS_CTL_TID_MASK;
+ else if (!ieee80211_is_data_qos(hdr->frame_control))
return HAL_DESC_REO_NON_QOS_TID;
else
return skb->priority & IEEE80211_QOS_CTL_TID_MASK;
@@ -86,7 +93,8 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
if (test_bit(ATH11K_FLAG_CRASH_FLUSH, &ar->ab->dev_flags))
return -ESHUTDOWN;
- if (!ieee80211_is_data(hdr->frame_control))
+ if (!(info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) &&
+ !ieee80211_is_data(hdr->frame_control))
return -ENOTSUPP;
pool_id = skb_get_queue_mapping(skb) & (ATH11K_HW_MAX_QUEUES - 1);
@@ -166,7 +174,10 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
* skb_checksum_help() is needed
*/
case HAL_TCL_ENCAP_TYPE_ETHERNET:
+ /* no need to encap */
+ break;
case HAL_TCL_ENCAP_TYPE_802_3:
+ default:
/* TODO: Take care of other encap modes as well */
ret = -EINVAL;
goto fail_remove_idr;
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index f151792578db..d9117ebf2809 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -33,6 +33,12 @@
.max_power = 30, \
}
+/* frame mode values are mapped as per enum ath11k_hw_txrx_mode */
+static unsigned int ath11k_frame_mode = ATH11K_HW_TXRX_NATIVE_WIFI;
+module_param_named(frame_mode, ath11k_frame_mode, uint, 0644);
+MODULE_PARM_DESC(frame_mode,
+ "Datapath frame mode (0: raw, 1: native wifi (default), 2: ethernet)");
+
static const struct ieee80211_channel ath11k_2ghz_channels[] = {
CHAN2G(1, 2412, 0),
CHAN2G(2, 2417, 0),
@@ -3685,10 +3691,10 @@ static int __ath11k_set_antenna(struct ath11k *ar, u32 tx_ant, u32 rx_ant)
int ath11k_mac_tx_mgmt_pending_free(int buf_id, void *skb, void *ctx)
{
+ struct sk_buff *msdu = skb;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(msdu);
struct ath11k *ar = ctx;
struct ath11k_base *ab = ar->ab;
- struct sk_buff *msdu = skb;
- struct ieee80211_tx_info *info;
spin_lock_bh(&ar->txmgmt_idr_lock);
idr_remove(&ar->txmgmt_idr, buf_id);
@@ -3728,6 +3734,7 @@ static int ath11k_mac_mgmt_tx_wmi(struct ath11k *ar, struct ath11k_vif *arvif,
{
struct ath11k_base *ab = ar->ab;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_tx_info *info;
dma_addr_t paddr;
int buf_id;
int ret;
@@ -3739,11 +3746,14 @@ static int ath11k_mac_mgmt_tx_wmi(struct ath11k *ar, struct ath11k_vif *arvif,
if (buf_id < 0)
return -ENOSPC;
- 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(skb, IEEE80211_CCMP_MIC_LEN);
+ info = IEEE80211_SKB_CB(skb);
+ if (!(info->control.flags & IEEE80211_TX_CTRL_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(skb, IEEE80211_CCMP_MIC_LEN);
+ }
}
paddr = dma_map_single(ab->dev, skb->data, skb->len, DMA_TO_DEVICE);
@@ -3855,6 +3865,7 @@ static void ath11k_mac_op_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
+ struct ath11k_skb_cb *skb_cb = ATH11K_SKB_CB(skb);
struct ath11k *ar = hw->priv;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_vif *vif = info->control.vif;
@@ -3863,7 +3874,9 @@ static void ath11k_mac_op_tx(struct ieee80211_hw *hw,
bool is_prb_rsp;
int ret;
- if (ieee80211_is_mgmt(hdr->frame_control)) {
+ if (info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) {
+ skb_cb->flags |= ATH11K_SKB_HW_80211_ENCAP;
+ } else if (ieee80211_is_mgmt(hdr->frame_control)) {
is_prb_rsp = ieee80211_is_probe_resp(hdr->frame_control);
ret = ath11k_mac_mgmt_tx(ar, skb, is_prb_rsp);
if (ret) {
@@ -4144,6 +4157,7 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,
struct vdev_create_params vdev_param = {0};
struct peer_create_params peer_param;
u32 param_id, param_value;
+ int hw_encap = 0;
u16 nss;
int i;
int ret;
@@ -4238,7 +4252,22 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,
spin_unlock_bh(&ar->data_lock);
param_id = WMI_VDEV_PARAM_TX_ENCAP_TYPE;
- param_value = ATH11K_HW_TXRX_NATIVE_WIFI;
+ if (ath11k_frame_mode == ATH11K_HW_TXRX_ETHERNET)
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_AP_VLAN:
+ case NL80211_IFTYPE_AP:
+ hw_encap = 1;
+ break;
+ default:
+ break;
+ }
+
+ if (ieee80211_set_hw_80211_encap(vif, hw_encap))
+ param_value = ATH11K_HW_TXRX_ETHERNET;
+ else
+ param_value = ATH11K_HW_TXRX_NATIVE_WIFI;
+
ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
param_id, param_value);
if (ret) {
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index ba05935b715a..bce8fc2b7257 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -4568,6 +4568,9 @@ enum wmi_sta_ps_param_rx_wake_policy {
WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD = 1,
};
+/* Do not change existing values! Used by ath11k_frame_mode parameter
+ * module parameter.
+ */
enum ath11k_hw_txrx_mode {
ATH11K_HW_TXRX_RAW = 0,
ATH11K_HW_TXRX_NATIVE_WIFI = 1,
--
2.29.2
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