From: Xinming Hu <h...@marvell.com>

Usb tx aggregation feature will utilize 4-bytes bus interface header,
otherwise it will be set to zero in default case.

Signed-off-by: Xinming Hu <h...@marvell.com>
Signed-off-by: Cathy Luo <c...@marvell.com>
Signed-off-by: Ganapathi Bhat <gb...@marvell.com>
---
v3: same as v1,v2
---
 drivers/net/wireless/marvell/mwifiex/11n_aggr.c |  2 +-
 drivers/net/wireless/marvell/mwifiex/cmdevt.c   |  8 ++++----
 drivers/net/wireless/marvell/mwifiex/init.c     |  5 +++++
 drivers/net/wireless/marvell/mwifiex/main.h     |  1 +
 drivers/net/wireless/marvell/mwifiex/pcie.c     | 19 ++++++++++---------
 drivers/net/wireless/marvell/mwifiex/sdio.c     | 12 ++++++------
 drivers/net/wireless/marvell/mwifiex/sta_tx.c   | 12 ++++++------
 drivers/net/wireless/marvell/mwifiex/txrx.c     | 11 +++--------
 drivers/net/wireless/marvell/mwifiex/uap_txrx.c |  5 ++---
 9 files changed, 38 insertions(+), 37 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/11n_aggr.c 
b/drivers/net/wireless/marvell/mwifiex/11n_aggr.c
index a75013a..e8ffb26 100644
--- a/drivers/net/wireless/marvell/mwifiex/11n_aggr.c
+++ b/drivers/net/wireless/marvell/mwifiex/11n_aggr.c
@@ -164,7 +164,7 @@
        int pad = 0, aggr_num = 0, ret;
        struct mwifiex_tx_param tx_param;
        struct txpd *ptx_pd = NULL;
-       int headroom = adapter->iface_type == MWIFIEX_USB ? 0 : INTF_HEADER_LEN;
+       int headroom = adapter->intf_hdr_len;
 
        skb_src = skb_peek(&pra_list->skb_head);
        if (!skb_src) {
diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c 
b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index 0c3b217..d62f729 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -258,10 +258,10 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private 
*priv,
                if (ret == -EBUSY)
                        cmd_node->cmd_skb = NULL;
        } else {
-               skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);
+               skb_push(cmd_node->cmd_skb, adapter->intf_hdr_len);
                ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
                                                   cmd_node->cmd_skb, NULL);
-               skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);
+               skb_pull(cmd_node->cmd_skb, adapter->intf_hdr_len);
        }
 
        if (ret == -1) {
@@ -351,10 +351,10 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct 
mwifiex_adapter *adapter)
                if (ret != -EBUSY)
                        dev_kfree_skb_any(sleep_cfm_tmp);
        } else {
-               skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
+               skb_push(adapter->sleep_cfm, adapter->intf_hdr_len);
                ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
                                                   adapter->sleep_cfm, NULL);
-               skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
+               skb_pull(adapter->sleep_cfm, adapter->intf_hdr_len);
        }
 
        if (ret == -1) {
diff --git a/drivers/net/wireless/marvell/mwifiex/init.c 
b/drivers/net/wireless/marvell/mwifiex/init.c
index 7569483..0710b917 100644
--- a/drivers/net/wireless/marvell/mwifiex/init.c
+++ b/drivers/net/wireless/marvell/mwifiex/init.c
@@ -217,6 +217,11 @@ static void mwifiex_init_adapter(struct mwifiex_adapter 
*adapter)
        else
                adapter->data_sent = false;
 
+       if (adapter->iface_type == MWIFIEX_USB)
+               adapter->intf_hdr_len = 0;
+       else
+               adapter->intf_hdr_len = INTF_HEADER_LEN;
+
        adapter->cmd_resp_received = false;
        adapter->event_received = false;
        adapter->data_received = false;
diff --git a/drivers/net/wireless/marvell/mwifiex/main.h 
b/drivers/net/wireless/marvell/mwifiex/main.h
index 6e76b30..ee496ab 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.h
+++ b/drivers/net/wireless/marvell/mwifiex/main.h
@@ -849,6 +849,7 @@ struct mwifiex_adapter {
        u8 perm_addr[ETH_ALEN];
        bool surprise_removed;
        u32 fw_release_number;
+       u8 intf_hdr_len;
        u16 init_wait_q_woken;
        wait_queue_head_t init_wait_q;
        void *card;
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c 
b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 78688ff..e47326e 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -1391,7 +1391,7 @@ static int mwifiex_pcie_process_recv_data(struct 
mwifiex_adapter *adapter)
                 * first 2 bytes for len, next 2 bytes is for type
                 */
                rx_len = get_unaligned_le16(skb_data->data);
-               if (WARN_ON(rx_len <= INTF_HEADER_LEN ||
+               if (WARN_ON(rx_len <= adapter->intf_hdr_len ||
                            rx_len > MWIFIEX_RX_DATA_BUF_SIZE)) {
                        mwifiex_dbg(adapter, ERROR,
                                    "Invalid RX len %d, Rd=%#x, Wr=%#x\n",
@@ -1402,7 +1402,7 @@ static int mwifiex_pcie_process_recv_data(struct 
mwifiex_adapter *adapter)
                        mwifiex_dbg(adapter, DATA,
                                    "info: RECV DATA: Rd=%#x, Wr=%#x, Len=%d\n",
                                    card->rxbd_rdptr, wrptr, rx_len);
-                       skb_pull(skb_data, INTF_HEADER_LEN);
+                       skb_pull(skb_data, adapter->intf_hdr_len);
                        if (adapter->rx_work_enabled) {
                                skb_queue_tail(&adapter->rx_data_q, skb_data);
                                adapter->data_received = true;
@@ -1736,7 +1736,7 @@ static int mwifiex_pcie_process_cmd_complete(struct 
mwifiex_adapter *adapter)
                                                       MWIFIEX_MAX_DELAY_COUNT);
                        mwifiex_unmap_pci_memory(adapter, skb,
                                                 PCI_DMA_FROMDEVICE);
-                       skb_pull(skb, INTF_HEADER_LEN);
+                       skb_pull(skb, adapter->intf_hdr_len);
                        while (reg->sleep_cookie && (count++ < 10) &&
                               mwifiex_pcie_ok_to_access_hw(adapter))
                                usleep_range(50, 60);
@@ -1749,12 +1749,12 @@ static int mwifiex_pcie_process_cmd_complete(struct 
mwifiex_adapter *adapter)
                }
                memcpy(adapter->upld_buf, skb->data,
                       min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, skb->len));
-               skb_push(skb, INTF_HEADER_LEN);
+               skb_push(skb, adapter->intf_hdr_len);
                if (mwifiex_map_pci_memory(adapter, skb, MWIFIEX_UPLD_SIZE,
                                           PCI_DMA_FROMDEVICE))
                        return -1;
        } else if (mwifiex_pcie_ok_to_access_hw(adapter)) {
-               skb_pull(skb, INTF_HEADER_LEN);
+               skb_pull(skb, adapter->intf_hdr_len);
                adapter->curr_cmd->resp_skb = skb;
                adapter->cmd_resp_received = true;
                /* Take the pointer and set it to CMD node and will
@@ -1791,7 +1791,7 @@ static int mwifiex_pcie_cmdrsp_complete(struct 
mwifiex_adapter *adapter,
 
        if (skb) {
                card->cmdrsp_buf = skb;
-               skb_push(card->cmdrsp_buf, INTF_HEADER_LEN);
+               skb_push(card->cmdrsp_buf, adapter->intf_hdr_len);
                if (mwifiex_map_pci_memory(adapter, skb, MWIFIEX_UPLD_SIZE,
                                           PCI_DMA_FROMDEVICE))
                        return -1;
@@ -1856,14 +1856,15 @@ static int mwifiex_pcie_process_event_ready(struct 
mwifiex_adapter *adapter)
                desc = card->evtbd_ring[rdptr];
                memset(desc, 0, sizeof(*desc));
 
-               event = get_unaligned_le32(&skb_cmd->data[INTF_HEADER_LEN]);
+               event = get_unaligned_le32(
+                       &skb_cmd->data[adapter->intf_hdr_len]);
                adapter->event_cause = event;
                /* The first 4bytes will be the event transfer header
                   len is 2 bytes followed by type which is 2 bytes */
                memcpy(&data_len, skb_cmd->data, sizeof(__le16));
                evt_len = le16_to_cpu(data_len);
                skb_trim(skb_cmd, evt_len);
-               skb_pull(skb_cmd, INTF_HEADER_LEN);
+               skb_pull(skb_cmd, adapter->intf_hdr_len);
                mwifiex_dbg(adapter, EVENT,
                            "info: Event length: %d\n", evt_len);
 
@@ -1922,7 +1923,7 @@ static int mwifiex_pcie_event_complete(struct 
mwifiex_adapter *adapter,
        }
 
        if (!card->evt_buf_list[rdptr]) {
-               skb_push(skb, INTF_HEADER_LEN);
+               skb_push(skb, adapter->intf_hdr_len);
                skb_put(skb, MAX_EVENT_SIZE - skb->len);
                if (mwifiex_map_pci_memory(adapter, skb,
                                           MAX_EVENT_SIZE,
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c 
b/drivers/net/wireless/marvell/mwifiex/sdio.c
index d38d31b..f81a006 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -1125,7 +1125,7 @@ static void mwifiex_deaggr_sdio_pkt(struct 
mwifiex_adapter *adapter,
        data = skb->data;
        total_pkt_len = skb->len;
 
-       while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) {
+       while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) {
                if (total_pkt_len < adapter->sdio_rx_block_size)
                        break;
                blk_num = *(data + BLOCK_NUMBER_OFFSET);
@@ -1152,7 +1152,7 @@ static void mwifiex_deaggr_sdio_pkt(struct 
mwifiex_adapter *adapter,
                        break;
                skb_put(skb_deaggr, pkt_len);
                memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
-               skb_pull(skb_deaggr, INTF_HEADER_LEN);
+               skb_pull(skb_deaggr, adapter->intf_hdr_len);
 
                mwifiex_handle_rx_packet(adapter, skb_deaggr);
                data += blk_size;
@@ -1178,7 +1178,7 @@ static int mwifiex_decode_rx_packet(struct 
mwifiex_adapter *adapter,
 
        if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
                skb_trim(skb, pkt_len);
-               skb_pull(skb, INTF_HEADER_LEN);
+               skb_pull(skb, adapter->intf_hdr_len);
        }
 
        switch (upld_typ) {
@@ -1537,7 +1537,7 @@ static int mwifiex_process_int_status(struct 
mwifiex_adapter *adapter)
                rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
                rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
                rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
-               if (rx_len <= INTF_HEADER_LEN ||
+               if (rx_len <= adapter->intf_hdr_len ||
                    (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
                     MWIFIEX_RX_DATA_BUF_SIZE)
                        return -1;
@@ -1635,7 +1635,7 @@ static int mwifiex_process_int_status(struct 
mwifiex_adapter *adapter)
                        rx_blocks =
                                (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
                                 1) / MWIFIEX_SDIO_BLOCK_SIZE;
-                       if (rx_len <= INTF_HEADER_LEN ||
+                       if (rx_len <= adapter->intf_hdr_len ||
                            (card->mpa_rx.enabled &&
                             ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
                              card->mpa_rx.buf_size))) {
@@ -1896,7 +1896,7 @@ static int mwifiex_sdio_host_to_card(struct 
mwifiex_adapter *adapter,
                adapter->cmd_sent = true;
                /* Type must be MWIFIEX_TYPE_CMD */
 
-               if (pkt_len <= INTF_HEADER_LEN ||
+               if (pkt_len <= adapter->intf_hdr_len ||
                    pkt_len > MWIFIEX_UPLD_SIZE)
                        mwifiex_dbg(adapter, ERROR,
                                    "%s: payload=%p, nb=%d\n",
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_tx.c 
b/drivers/net/wireless/marvell/mwifiex/sta_tx.c
index f6683ea..620f865 100644
--- a/drivers/net/wireless/marvell/mwifiex/sta_tx.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_tx.c
@@ -49,8 +49,7 @@ void *mwifiex_process_sta_txpd(struct mwifiex_private *priv,
        struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
        unsigned int pad;
        u16 pkt_type, pkt_offset;
-       int hroom = (priv->adapter->iface_type == MWIFIEX_USB) ? 0 :
-                      INTF_HEADER_LEN;
+       int hroom = adapter->intf_hdr_len;
 
        if (!skb->len) {
                mwifiex_dbg(adapter, ERROR,
@@ -116,7 +115,7 @@ void *mwifiex_process_sta_txpd(struct mwifiex_private *priv,
 
        local_tx_pd->tx_pkt_offset = cpu_to_le16(pkt_offset);
 
-       /* make space for INTF_HEADER_LEN */
+       /* make space for adapter->intf_hdr_len */
        skb_push(skb, hroom);
 
        if (!local_tx_pd->tx_control)
@@ -165,8 +164,9 @@ int mwifiex_send_null_packet(struct mwifiex_private *priv, 
u8 flags)
        memset(tx_info, 0, sizeof(*tx_info));
        tx_info->bss_num = priv->bss_num;
        tx_info->bss_type = priv->bss_type;
-       tx_info->pkt_len = data_len - (sizeof(struct txpd) + INTF_HEADER_LEN);
-       skb_reserve(skb, sizeof(struct txpd) + INTF_HEADER_LEN);
+       tx_info->pkt_len = data_len -
+                       (sizeof(struct txpd) + adapter->intf_hdr_len);
+       skb_reserve(skb, sizeof(struct txpd) + adapter->intf_hdr_len);
        skb_push(skb, sizeof(struct txpd));
 
        local_tx_pd = (struct txpd *) skb->data;
@@ -177,11 +177,11 @@ int mwifiex_send_null_packet(struct mwifiex_private 
*priv, u8 flags)
        local_tx_pd->bss_num = priv->bss_num;
        local_tx_pd->bss_type = priv->bss_type;
 
+       skb_push(skb, adapter->intf_hdr_len);
        if (adapter->iface_type == MWIFIEX_USB) {
                ret = adapter->if_ops.host_to_card(adapter, priv->usb_port,
                                                   skb, NULL);
        } else {
-               skb_push(skb, INTF_HEADER_LEN);
                tx_param.next_pkt_len = 0;
                ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
                                                   skb, &tx_param);
diff --git a/drivers/net/wireless/marvell/mwifiex/txrx.c 
b/drivers/net/wireless/marvell/mwifiex/txrx.c
index fac28bd..15e92af 100644
--- a/drivers/net/wireless/marvell/mwifiex/txrx.c
+++ b/drivers/net/wireless/marvell/mwifiex/txrx.c
@@ -91,7 +91,7 @@ int mwifiex_process_tx(struct mwifiex_private *priv, struct 
sk_buff *skb,
        struct mwifiex_sta_node *dest_node;
        struct ethhdr *hdr = (void *)skb->data;
 
-       hroom = (adapter->iface_type == MWIFIEX_USB) ? 0 : INTF_HEADER_LEN;
+       hroom = adapter->intf_hdr_len;
 
        if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) {
                dest_node = mwifiex_get_sta_entry(priv, hdr->h_dest);
@@ -179,13 +179,8 @@ static int mwifiex_host_to_card(struct mwifiex_adapter 
*adapter,
                mwifiex_write_data_complete(adapter, skb, 0, 0);
                return ret;
        }
-       if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
-               if (adapter->iface_type == MWIFIEX_USB)
-                       local_tx_pd = (struct txpd *)head_ptr;
-               else
-                       local_tx_pd = (struct txpd *) (head_ptr +
-                               INTF_HEADER_LEN);
-       }
+       if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA)
+               local_tx_pd = (struct txpd *)(head_ptr + adapter->intf_hdr_len);
 
        if (adapter->iface_type == MWIFIEX_USB) {
                ret = adapter->if_ops.host_to_card(adapter,
diff --git a/drivers/net/wireless/marvell/mwifiex/uap_txrx.c 
b/drivers/net/wireless/marvell/mwifiex/uap_txrx.c
index bf5660e..1e6a62c 100644
--- a/drivers/net/wireless/marvell/mwifiex/uap_txrx.c
+++ b/drivers/net/wireless/marvell/mwifiex/uap_txrx.c
@@ -468,8 +468,7 @@ void *mwifiex_process_uap_txpd(struct mwifiex_private *priv,
        struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
        int pad;
        u16 pkt_type, pkt_offset;
-       int hroom = (priv->adapter->iface_type == MWIFIEX_USB) ? 0 :
-                      INTF_HEADER_LEN;
+       int hroom = adapter->intf_hdr_len;
 
        if (!skb->len) {
                mwifiex_dbg(adapter, ERROR,
@@ -521,7 +520,7 @@ void *mwifiex_process_uap_txpd(struct mwifiex_private *priv,
 
        txpd->tx_pkt_offset = cpu_to_le16(pkt_offset);
 
-       /* make space for INTF_HEADER_LEN */
+       /* make space for adapter->intf_hdr_len */
        skb_push(skb, hroom);
 
        if (!txpd->tx_control)
-- 
1.9.1

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