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Date: Mon, 16 Jun 2014 21:35:38 +0530
From: navin patidar <navin.patidar@...il.com>
To: gregkh@...uxfoundation.org
Cc: Larry.Finger@...inger.net, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org,
navin patidar <navin.patidar@...il.com>
Subject: [PATCH 1/9] 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@...il.com>
---
drivers/staging/rtl8188eu/core/rtw_xmit.c | 135 -----------------------------
1 file changed, 135 deletions(-)
diff --git a/drivers/staging/rtl8188eu/core/rtw_xmit.c b/drivers/staging/rtl8188eu/core/rtw_xmit.c
index 1413ec8..a113f0f 100644
--- 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) {
--
1.7.10.4
--
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