staging: rtl8188eu: Remove function rtw_br_client_tx()

rtw_br_client_tx() pass tx packet to functions responsible for
building NAT table.

Signed-off-by: navin patidar <navin.patidar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8188eu/core/rtw_xmit.c b/drivers/staging/rtl8188eu/core/rtw_xmit.c
index 1413ec8..a113f0f 100644 (file)
--- a/drivers/staging/rtl8188eu/core/rtw_xmit.c
+++ b/drivers/staging/rtl8188eu/core/rtw_xmit.c
@@ -1676,127 +1676,6 @@ void rtw_init_hwxmits(struct hw_xmit *phwxmit, int entry)
                phwxmit->accnt = 0;
 }
 
-static int rtw_br_client_tx(struct adapter *padapter, struct sk_buff **pskb)
-{
-       struct sk_buff *skb = *pskb;
-       int res, is_vlan_tag = 0, i, do_nat25 = 1;
-       unsigned short vlan_hdr = 0;
-       void *br_port = NULL;
-
-       rcu_read_lock();
-       br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
-       rcu_read_unlock();
-       spin_lock_bh(&padapter->br_ext_lock);
-       if (!(skb->data[0] & 1) && br_port &&
-           memcmp(skb->data+MACADDRLEN, padapter->br_mac, MACADDRLEN) &&
-           *((__be16 *)(skb->data+MACADDRLEN*2)) != __constant_htons(ETH_P_8021Q) &&
-           *((__be16 *)(skb->data+MACADDRLEN*2)) == __constant_htons(ETH_P_IP) &&
-           !memcmp(padapter->scdb_mac, skb->data+MACADDRLEN, MACADDRLEN) && padapter->scdb_entry) {
-               memcpy(skb->data+MACADDRLEN, GET_MY_HWADDR(padapter), MACADDRLEN);
-               padapter->scdb_entry->ageing_timer = jiffies;
-               spin_unlock_bh(&padapter->br_ext_lock);
-       } else {
-               if (*((__be16 *)(skb->data+MACADDRLEN*2)) == __constant_htons(ETH_P_8021Q)) {
-                       is_vlan_tag = 1;
-                       vlan_hdr = *((unsigned short *)(skb->data+MACADDRLEN*2+2));
-                       for (i = 0; i < 6; i++)
-                               *((unsigned short *)(skb->data+MACADDRLEN*2+2-i*2)) = *((unsigned short *)(skb->data+MACADDRLEN*2-2-i*2));
-                       skb_pull(skb, 4);
-               }
-               if (!memcmp(skb->data+MACADDRLEN, padapter->br_mac, MACADDRLEN) &&
-                   (*((__be16 *)(skb->data+MACADDRLEN*2)) == __constant_htons(ETH_P_IP)))
-                       memcpy(padapter->br_ip, skb->data+WLAN_ETHHDR_LEN+12, 4);
-
-               if (*((__be16 *)(skb->data+MACADDRLEN*2)) == __constant_htons(ETH_P_IP)) {
-                       if (memcmp(padapter->scdb_mac, skb->data+MACADDRLEN, MACADDRLEN)) {
-                               padapter->scdb_entry = (struct nat25_network_db_entry *)scdb_findEntry(padapter,
-                                                       skb->data+MACADDRLEN, skb->data+WLAN_ETHHDR_LEN+12);
-                               if (padapter->scdb_entry) {
-                                       memcpy(padapter->scdb_mac, skb->data+MACADDRLEN, MACADDRLEN);
-                                       memcpy(padapter->scdb_ip, skb->data+WLAN_ETHHDR_LEN+12, 4);
-                                       padapter->scdb_entry->ageing_timer = jiffies;
-                                       do_nat25 = 0;
-                               }
-                       } else {
-                               if (padapter->scdb_entry) {
-                                       padapter->scdb_entry->ageing_timer = jiffies;
-                                       do_nat25 = 0;
-                               } else {
-                                       memset(padapter->scdb_mac, 0, MACADDRLEN);
-                                       memset(padapter->scdb_ip, 0, 4);
-                               }
-                       }
-               }
-               spin_unlock_bh(&padapter->br_ext_lock);
-               if (do_nat25) {
-                       if (nat25_db_handle(padapter, skb, NAT25_CHECK) == 0) {
-                               struct sk_buff *newskb;
-
-                               if (is_vlan_tag) {
-                                       skb_push(skb, 4);
-                                       for (i = 0; i < 6; i++)
-                                               *((unsigned short *)(skb->data+i*2)) = *((unsigned short *)(skb->data+4+i*2));
-                                       *((__be16 *)(skb->data+MACADDRLEN*2)) = __constant_htons(ETH_P_8021Q);
-                                       *((unsigned short *)(skb->data+MACADDRLEN*2+2)) = vlan_hdr;
-                               }
-
-                               newskb = skb_copy(skb, GFP_ATOMIC);
-                               if (newskb == NULL) {
-                                       DEBUG_ERR("TX DROP: skb_copy fail!\n");
-                                       return -1;
-                               }
-                               dev_kfree_skb_any(skb);
-
-                               *pskb = skb = newskb;
-                               if (is_vlan_tag) {
-                                       vlan_hdr = *((unsigned short *)(skb->data+MACADDRLEN*2+2));
-                                       for (i = 0; i < 6; i++)
-                                               *((unsigned short *)(skb->data+MACADDRLEN*2+2-i*2)) = *((unsigned short *)(skb->data+MACADDRLEN*2-2-i*2));
-                                       skb_pull(skb, 4);
-                               }
-                       }
-
-                       if (skb_is_nonlinear(skb))
-                               DEBUG_ERR("%s(): skb_is_nonlinear!!\n", __func__);
-
-                       res = skb_linearize(skb);
-                       if (res < 0) {
-                                       DEBUG_ERR("TX DROP: skb_linearize fail!\n");
-                                       return -1;
-                       }
-
-                       res = nat25_db_handle(padapter, skb, NAT25_INSERT);
-                       if (res < 0) {
-                               if (res == -2) {
-                                       DEBUG_ERR("TX DROP: nat25_db_handle fail!\n");
-                                       return -1;
-                               }
-                               return 0;
-                       }
-               }
-
-               memcpy(skb->data+MACADDRLEN, GET_MY_HWADDR(padapter), MACADDRLEN);
-
-               dhcp_flag_bcast(padapter, skb);
-
-               if (is_vlan_tag) {
-                       skb_push(skb, 4);
-                       for (i = 0; i < 6; i++)
-                               *((unsigned short *)(skb->data+i*2)) = *((unsigned short *)(skb->data+4+i*2));
-                       *((__be16 *)(skb->data+MACADDRLEN*2)) = __constant_htons(ETH_P_8021Q);
-                       *((unsigned short *)(skb->data+MACADDRLEN*2+2)) = vlan_hdr;
-               }
-       }
-
-       /*  check if SA is equal to our MAC */
-       if (memcmp(skb->data+MACADDRLEN, GET_MY_HWADDR(padapter), MACADDRLEN)) {
-               DEBUG_ERR("TX DROP: untransformed frame SA:%02X%02X%02X%02X%02X%02X!\n",
-                         skb->data[6], skb->data[7], skb->data[8], skb->data[9], skb->data[10], skb->data[11]);
-                       return -1;
-       }
-       return 0;
-}
-
 u32 rtw_get_ff_hwaddr(struct xmit_frame *pxmitframe)
 {
        u32 addr;
@@ -1856,8 +1735,6 @@ s32 rtw_xmit(struct adapter *padapter, struct sk_buff **ppkt)
 {
        struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
        struct xmit_frame *pxmitframe = NULL;
-       struct mlme_priv        *pmlmepriv = &padapter->mlmepriv;
-       void *br_port = NULL;
        s32 res;
 
        pxmitframe = rtw_alloc_xmitframe(pxmitpriv);
@@ -1867,18 +1744,6 @@ s32 rtw_xmit(struct adapter *padapter, struct sk_buff **ppkt)
                return -1;
        }
 
-       rcu_read_lock();
-       br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
-       rcu_read_unlock();
-
-       if (br_port && check_fwstate(pmlmepriv, WIFI_STATION_STATE|WIFI_ADHOC_STATE)) {
-               res = rtw_br_client_tx(padapter, ppkt);
-               if (res == -1) {
-                       rtw_free_xmitframe(pxmitpriv, pxmitframe);
-                       return -1;
-               }
-       }
-
        res = update_attrib(padapter, *ppkt, &pxmitframe->attrib);
 
        if (res == _FAIL) {