diff options
Diffstat (limited to 'drivers/staging/rtl8712/xmit_linux.c')
| -rw-r--r-- | drivers/staging/rtl8712/xmit_linux.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/staging/rtl8712/xmit_linux.c b/drivers/staging/rtl8712/xmit_linux.c new file mode 100644 index 0000000000..ceb6b590b3 --- /dev/null +++ b/drivers/staging/rtl8712/xmit_linux.c @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: GPL-2.0 +/****************************************************************************** + * xmit_linux.c + * + * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. + * Linux device driver for RTL8192SU + * + * 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 <linux/usb.h> +#include <linux/ip.h> +#include <linux/if_ether.h> +#include <linux/kmemleak.h> + +#include "osdep_service.h" +#include "drv_types.h" + +#include "wifi.h" +#include "mlme_osdep.h" +#include "xmit_osdep.h" +#include "osdep_intf.h" + +static uint remainder_len(struct pkt_file *pfile) +{ + 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) +{ + return (pfile->pkt_len == 0); +} + +void r8712_set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib) +{ + struct ethhdr etherhdr; + struct iphdr ip_hdr; + u16 user_priority = 0; + + _r8712_open_pktfile(ppktfile->pkt, ppktfile); + _r8712_pktfile_read(ppktfile, (unsigned char *)ðerhdr, ETH_HLEN); + + /* get user_priority from IP hdr*/ + if (pattrib->ether_type == 0x0800) { + _r8712_pktfile_read(ppktfile, (u8 *)&ip_hdr, sizeof(ip_hdr)); + /*user_priority = (ntohs(ip_hdr.tos) >> 5) & 0x3 ;*/ + user_priority = 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) + user_priority = 7; + } + pattrib->priority = user_priority; + pattrib->hdrlen = WLAN_HDR_A3_QOS_LEN; + pattrib->subtype = WIFI_QOS_DATA_TYPE; +} + +void r8712_SetFilter(struct work_struct *work) +{ + struct _adapter *adapter = container_of(work, struct _adapter, + wk_filter_rx_ff0); + u8 oldvalue = 0x00, newvalue = 0x00; + + oldvalue = r8712_read8(adapter, 0x117); + newvalue = oldvalue & 0xfe; + r8712_write8(adapter, 0x117, newvalue); + + wait_for_completion(&adapter->rx_filter_ready); + r8712_write8(adapter, 0x117, oldvalue); +} + +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]) { + int k; + + for (k = i - 1; k >= 0; k--) { + /* handle allocation errors part way through loop */ + usb_free_urb(pxmitbuf->pxmit_urb[k]); + } + netdev_err(padapter->pnetdev, "pxmitbuf->pxmit_urb[i] == NULL\n"); + return -ENOMEM; + } + kmemleak_not_leak(pxmitbuf->pxmit_urb[i]); + } + return 0; +} + +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; +} + +netdev_tx_t r8712_xmit_entry(_pkt *pkt, struct net_device *netdev) +{ + struct xmit_frame *xmitframe = NULL; + struct _adapter *adapter = netdev_priv(netdev); + struct xmit_priv *xmitpriv = &(adapter->xmitpriv); + + if (!r8712_if_up(adapter)) + goto _xmit_entry_drop; + + xmitframe = r8712_alloc_xmitframe(xmitpriv); + if (!xmitframe) + goto _xmit_entry_drop; + + if (r8712_update_attrib(adapter, pkt, &xmitframe->attrib)) + goto _xmit_entry_drop; + + adapter->ledpriv.LedControlHandler(adapter, LED_CTL_TX); + xmitframe->pkt = pkt; + if (r8712_pre_xmit(adapter, xmitframe)) { + /*dump xmitframe directly or drop xframe*/ + dev_kfree_skb_any(pkt); + xmitframe->pkt = NULL; + } + xmitpriv->tx_pkts++; + xmitpriv->tx_bytes += xmitframe->attrib.last_txcmdsz; + return NETDEV_TX_OK; +_xmit_entry_drop: + if (xmitframe) + r8712_free_xmitframe(xmitpriv, xmitframe); + xmitpriv->tx_drop++; + dev_kfree_skb_any(pkt); + return NETDEV_TX_OK; +} |