static bool
mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
struct sk_buff *skb)
{
struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
mwifiex_is_skb_mgmt_frame(skb) ||
(GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
(ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
mwifiex_dbg(priv->adapter, DATA,
"bypass txqueue; eth type %#x, mgmt %d\n",
ntohs(eth_hdr->h_proto),
mwifiex_is_skb_mgmt_frame(skb));
return true;
}
return false;
}
/*
* This function fills the TxPD for tx packets.
*
* The Tx buffer received by this function should already have the
* header space allocated for TxPD.
*
* This function inserts the TxPD in between interface header and actual
* data and adjusts the buffer pointers accordingly.
*
* The following TxPD fields are set by this function, as required -
* - BSS number
* - Tx packet length and offset
* - Priority
* - Packet delay
* - Priority specific Tx control
* - Flags
*/
void *mwifiex_process_sta_txpd(struct mwifiex_private *priv,
struct sk_buff *skb)
{
struct mwifiex_adapter *adapter = priv->adapter;
struct txpd *local_tx_pd;
struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
u8 pad;
u16 pkt_type, pkt_offset;
if (!skb->len) {
dev_err(adapter->dev, "Tx: bad packet length: %d\n", skb->len);
tx_info->status_code = -1;
return skb->data;
}
pkt_type = mwifiex_is_skb_mgmt_frame(skb) ? PKT_TYPE_MGMT : 0;
/* If skb->data is not aligned; add padding */
pad = (4 - (((void *)skb->data - NULL) & 0x3)) % 4;
BUG_ON(skb_headroom(skb) < (sizeof(*local_tx_pd) + INTF_HEADER_LEN
+ pad));
skb_push(skb, sizeof(*local_tx_pd) + pad);
local_tx_pd = (struct txpd *) skb->data;
memset(local_tx_pd, 0, sizeof(struct txpd));
local_tx_pd->bss_num = priv->bss_num;
local_tx_pd->bss_type = priv->bss_type;
local_tx_pd->tx_pkt_length = cpu_to_le16((u16)(skb->len -
(sizeof(struct txpd)
+ pad)));
local_tx_pd->priority = (u8) skb->priority;
local_tx_pd->pkt_delay_2ms =
mwifiex_wmm_compute_drv_pkt_delay(priv, skb);
if (local_tx_pd->priority <
ARRAY_SIZE(priv->wmm.user_pri_pkt_tx_ctrl))
/*
* Set the priority specific tx_control field, setting of 0 will
* cause the default value to be used later in this function
*/
local_tx_pd->tx_control =
cpu_to_le32(priv->wmm.user_pri_pkt_tx_ctrl[local_tx_pd->
priority]);
if (adapter->pps_uapsd_mode) {
if (mwifiex_check_last_packet_indication(priv)) {
adapter->tx_lock_flag = true;
local_tx_pd->flags =
MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET;
}
}
if (tx_info->flags & MWIFIEX_BUF_FLAG_TDLS_PKT)
local_tx_pd->flags |= MWIFIEX_TXPD_FLAGS_TDLS_PACKET;
/* Offset of actual data */
pkt_offset = sizeof(struct txpd) + pad;
if (pkt_type == PKT_TYPE_MGMT) {
/* Set the packet type and add header for management frame */
local_tx_pd->tx_pkt_type = cpu_to_le16(pkt_type);
pkt_offset += MWIFIEX_MGMT_FRAME_HEADER_SIZE;
}
local_tx_pd->tx_pkt_offset = cpu_to_le16(pkt_offset);
/* make space for INTF_HEADER_LEN */
skb_push(skb, INTF_HEADER_LEN);
if (!local_tx_pd->tx_control)
/* TxCtrl set by user or default */
local_tx_pd->tx_control = cpu_to_le32(priv->pkt_tx_ctrl);
return skb->data;
}
