diff options
Diffstat (limited to 'drivers/staging/rtl8712/xmit_linux.c')
| -rw-r--r-- | drivers/staging/rtl8712/xmit_linux.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/drivers/staging/rtl8712/xmit_linux.c b/drivers/staging/rtl8712/xmit_linux.c new file mode 100644 index 0000000..7dea8b5 --- /dev/null +++ b/drivers/staging/rtl8712/xmit_linux.c @@ -0,0 +1,182 @@ +/****************************************************************************** + * xmit_linux.c + * + * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. + * Linux device driver for RTL8192SU + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * Modifications for inclusion into the Linux staging tree are + * Copyright(c) 2010 Larry Finger. All rights reserved. + * + * Contact information: + * WLAN FAE <wlanfae@realtek.com> + * Larry Finger <Larry.Finger@lwfinger.net> + * + ******************************************************************************/ + +#define _XMIT_OSDEP_C_ + +#include "osdep_service.h" +#include "drv_types.h" + + +#include "if_ether.h" +#include "ip.h" +#include "rtl871x_byteorder.h" +#include "wifi.h" +#include "mlme_osdep.h" +#include "xmit_osdep.h" +#include "osdep_intf.h" + +static uint remainder_len(struct pkt_file *pfile) +{ + /* Kovich: Need to extend the buf_len to 64 bit ?(unsigned long long) */ + return (uint)(pfile->buf_len - ((addr_t)(pfile->cur_addr) - + (addr_t)(pfile->buf_start))); +} + +void _r8712_open_pktfile(_pkt *pktptr, struct pkt_file *pfile) +{ + pfile->pkt = pktptr; + pfile->cur_addr = pfile->buf_start = pktptr->data; + pfile->pkt_len = pfile->buf_len = pktptr->len; + pfile->cur_buffer = pfile->buf_start ; +} + +uint _r8712_pktfile_read(struct pkt_file *pfile, u8 *rmem, uint rlen) +{ + uint len; + + len = remainder_len(pfile); + len = (rlen > len) ? len : rlen; + if (rmem) + skb_copy_bits(pfile->pkt, pfile->buf_len - pfile->pkt_len, + rmem, len); + pfile->cur_addr += len; + pfile->pkt_len -= len; + return len; +} + +sint r8712_endofpktfile(struct pkt_file *pfile) +{ + if (pfile->pkt_len == 0) + return true; + else + return false; +} + + +void r8712_set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib) +{ + int i; + struct ethhdr etherhdr; + struct iphdr ip_hdr; + u16 UserPriority = 0; + + _r8712_open_pktfile(ppktfile->pkt, ppktfile); + _r8712_pktfile_read(ppktfile, (unsigned char *)ðerhdr, ETH_HLEN); + + /* get UserPriority from IP hdr*/ + if (pattrib->ether_type == 0x0800) { + i = _r8712_pktfile_read(ppktfile, (u8 *)&ip_hdr, + sizeof(ip_hdr)); + /*UserPriority = (ntohs(ip_hdr.tos) >> 5) & 0x3 ;*/ + UserPriority = ip_hdr.tos >> 5; + } else { + /* "When priority processing of data frames is supported, + * a STA's SME should send EAPOL-Key frames at the highest + * priority." */ + + if (pattrib->ether_type == 0x888e) + UserPriority = 7; + } + pattrib->priority = UserPriority; + pattrib->hdrlen = WLAN_HDR_A3_QOS_LEN; + pattrib->subtype = WIFI_QOS_DATA_TYPE; +} + +int r8712_xmit_resource_alloc(struct _adapter *padapter, + struct xmit_buf *pxmitbuf) +{ + int i; + + for (i = 0; i < 8; i++) { + pxmitbuf->pxmit_urb[i] = _usb_alloc_urb(0, GFP_KERNEL); + if (pxmitbuf->pxmit_urb[i] == NULL) { + printk(KERN_ERR "r8712u: pxmitbuf->pxmit_urb[i]" + " == NULL"); + return _FAIL; + } + } + return _SUCCESS; +} + +void r8712_xmit_resource_free(struct _adapter *padapter, + struct xmit_buf *pxmitbuf) +{ + int i; + + for (i = 0; i < 8; i++) { + if (pxmitbuf->pxmit_urb[i]) { + usb_kill_urb(pxmitbuf->pxmit_urb[i]); + usb_free_urb(pxmitbuf->pxmit_urb[i]); + } + } +} + +void r8712_xmit_complete(struct _adapter *padapter, struct xmit_frame *pxframe) +{ + if (pxframe->pkt) + dev_kfree_skb_any(pxframe->pkt); + pxframe->pkt = NULL; +} + +int r8712_xmit_entry(_pkt *pkt, struct net_device *pnetdev) +{ + struct xmit_frame *pxmitframe = NULL; + struct _adapter *padapter = (struct _adapter *)_netdev_priv(pnetdev); + struct xmit_priv *pxmitpriv = &(padapter->xmitpriv); + int ret = 0; + + if (r8712_if_up(padapter) == false) { + ret = 0; + goto _xmit_entry_drop; + } + pxmitframe = r8712_alloc_xmitframe(pxmitpriv); + if (pxmitframe == NULL) { + ret = 0; + goto _xmit_entry_drop; + } + if ((!r8712_update_attrib(padapter, pkt, &pxmitframe->attrib))) { + ret = 0; + goto _xmit_entry_drop; + } + padapter->ledpriv.LedControlHandler(padapter, LED_CTL_TX); + pxmitframe->pkt = pkt; + if (r8712_pre_xmit(padapter, pxmitframe) == true) { + /*dump xmitframe directly or drop xframe*/ + dev_kfree_skb_any(pkt); + pxmitframe->pkt = NULL; + } + pxmitpriv->tx_pkts++; + pxmitpriv->tx_bytes += pxmitframe->attrib.last_txcmdsz; + return ret; +_xmit_entry_drop: + if (pxmitframe) + r8712_free_xmitframe(pxmitpriv, pxmitframe); + pxmitpriv->tx_drop++; + dev_kfree_skb_any(pkt); + return ret; +} |
