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2865d42c LF |
1 | /****************************************************************************** |
2 | * xmit_linux.c | |
3 | * | |
4 | * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. | |
5 | * Linux device driver for RTL8192SU | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along with | |
17 | * this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
19 | * | |
20 | * Modifications for inclusion into the Linux staging tree are | |
21 | * Copyright(c) 2010 Larry Finger. All rights reserved. | |
22 | * | |
23 | * Contact information: | |
24 | * WLAN FAE <wlanfae@realtek.com> | |
25 | * Larry Finger <Larry.Finger@lwfinger.net> | |
26 | * | |
27 | ******************************************************************************/ | |
28 | ||
29 | #define _XMIT_OSDEP_C_ | |
30 | ||
359140aa | 31 | #include <linux/usb.h> |
20467825 | 32 | #include <linux/ip.h> |
be9a1204 | 33 | #include <linux/if_ether.h> |
359140aa | 34 | |
2865d42c LF |
35 | #include "osdep_service.h" |
36 | #include "drv_types.h" | |
37 | ||
2865d42c LF |
38 | #include "wifi.h" |
39 | #include "mlme_osdep.h" | |
40 | #include "xmit_osdep.h" | |
41 | #include "osdep_intf.h" | |
42 | ||
43 | static uint remainder_len(struct pkt_file *pfile) | |
44 | { | |
2865d42c LF |
45 | return (uint)(pfile->buf_len - ((addr_t)(pfile->cur_addr) - |
46 | (addr_t)(pfile->buf_start))); | |
47 | } | |
48 | ||
49 | void _r8712_open_pktfile(_pkt *pktptr, struct pkt_file *pfile) | |
50 | { | |
51 | pfile->pkt = pktptr; | |
52 | pfile->cur_addr = pfile->buf_start = pktptr->data; | |
53 | pfile->pkt_len = pfile->buf_len = pktptr->len; | |
77e73e8c | 54 | pfile->cur_buffer = pfile->buf_start; |
2865d42c LF |
55 | } |
56 | ||
57 | uint _r8712_pktfile_read(struct pkt_file *pfile, u8 *rmem, uint rlen) | |
58 | { | |
59 | uint len; | |
60 | ||
61 | len = remainder_len(pfile); | |
62 | len = (rlen > len) ? len : rlen; | |
63 | if (rmem) | |
64 | skb_copy_bits(pfile->pkt, pfile->buf_len - pfile->pkt_len, | |
65 | rmem, len); | |
66 | pfile->cur_addr += len; | |
67 | pfile->pkt_len -= len; | |
68 | return len; | |
69 | } | |
70 | ||
71 | sint r8712_endofpktfile(struct pkt_file *pfile) | |
72 | { | |
6e4eb869 | 73 | return (pfile->pkt_len == 0); |
2865d42c LF |
74 | } |
75 | ||
76 | ||
77 | void r8712_set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib) | |
78 | { | |
2865d42c LF |
79 | struct ethhdr etherhdr; |
80 | struct iphdr ip_hdr; | |
81 | u16 UserPriority = 0; | |
82 | ||
83 | _r8712_open_pktfile(ppktfile->pkt, ppktfile); | |
84 | _r8712_pktfile_read(ppktfile, (unsigned char *)ðerhdr, ETH_HLEN); | |
85 | ||
86 | /* get UserPriority from IP hdr*/ | |
87 | if (pattrib->ether_type == 0x0800) { | |
e29d3ebc | 88 | _r8712_pktfile_read(ppktfile, (u8 *)&ip_hdr, sizeof(ip_hdr)); |
2865d42c LF |
89 | /*UserPriority = (ntohs(ip_hdr.tos) >> 5) & 0x3 ;*/ |
90 | UserPriority = ip_hdr.tos >> 5; | |
91 | } else { | |
92 | /* "When priority processing of data frames is supported, | |
93 | * a STA's SME should send EAPOL-Key frames at the highest | |
94 | * priority." */ | |
95 | ||
96 | if (pattrib->ether_type == 0x888e) | |
97 | UserPriority = 7; | |
98 | } | |
99 | pattrib->priority = UserPriority; | |
100 | pattrib->hdrlen = WLAN_HDR_A3_QOS_LEN; | |
101 | pattrib->subtype = WIFI_QOS_DATA_TYPE; | |
102 | } | |
103 | ||
f95302ee AB |
104 | void r8712_SetFilter(struct work_struct *work) |
105 | { | |
106 | struct _adapter *padapter = container_of(work, struct _adapter, | |
107 | wkFilterRxFF0); | |
108 | u8 oldvalue = 0x00, newvalue = 0x00; | |
109 | unsigned long irqL; | |
110 | ||
111 | oldvalue = r8712_read8(padapter, 0x117); | |
112 | newvalue = oldvalue & 0xfe; | |
113 | r8712_write8(padapter, 0x117, newvalue); | |
114 | ||
115 | spin_lock_irqsave(&padapter->lockRxFF0Filter, irqL); | |
116 | padapter->blnEnableRxFF0Filter = 1; | |
117 | spin_unlock_irqrestore(&padapter->lockRxFF0Filter, irqL); | |
118 | do { | |
119 | msleep(100); | |
120 | } while (padapter->blnEnableRxFF0Filter == 1); | |
121 | r8712_write8(padapter, 0x117, oldvalue); | |
122 | } | |
123 | ||
2865d42c LF |
124 | int r8712_xmit_resource_alloc(struct _adapter *padapter, |
125 | struct xmit_buf *pxmitbuf) | |
126 | { | |
127 | int i; | |
128 | ||
129 | for (i = 0; i < 8; i++) { | |
68e9b249 | 130 | pxmitbuf->pxmit_urb[i] = usb_alloc_urb(0, GFP_KERNEL); |
7cb07dc4 | 131 | if (!pxmitbuf->pxmit_urb[i]) { |
87a573ad | 132 | netdev_err(padapter->pnetdev, "pxmitbuf->pxmit_urb[i] == NULL\n"); |
2865d42c LF |
133 | return _FAIL; |
134 | } | |
135 | } | |
136 | return _SUCCESS; | |
137 | } | |
138 | ||
139 | void r8712_xmit_resource_free(struct _adapter *padapter, | |
140 | struct xmit_buf *pxmitbuf) | |
141 | { | |
142 | int i; | |
143 | ||
144 | for (i = 0; i < 8; i++) { | |
145 | if (pxmitbuf->pxmit_urb[i]) { | |
146 | usb_kill_urb(pxmitbuf->pxmit_urb[i]); | |
147 | usb_free_urb(pxmitbuf->pxmit_urb[i]); | |
148 | } | |
149 | } | |
150 | } | |
151 | ||
152 | void r8712_xmit_complete(struct _adapter *padapter, struct xmit_frame *pxframe) | |
153 | { | |
154 | if (pxframe->pkt) | |
155 | dev_kfree_skb_any(pxframe->pkt); | |
156 | pxframe->pkt = NULL; | |
157 | } | |
158 | ||
159 | int r8712_xmit_entry(_pkt *pkt, struct net_device *pnetdev) | |
160 | { | |
161 | struct xmit_frame *pxmitframe = NULL; | |
8f47c28b | 162 | struct _adapter *padapter = netdev_priv(pnetdev); |
2865d42c | 163 | struct xmit_priv *pxmitpriv = &(padapter->xmitpriv); |
2865d42c | 164 | |
1ca96884 | 165 | if (!r8712_if_up(padapter)) { |
2865d42c LF |
166 | goto _xmit_entry_drop; |
167 | } | |
168 | pxmitframe = r8712_alloc_xmitframe(pxmitpriv); | |
7cb07dc4 | 169 | if (!pxmitframe) { |
2865d42c LF |
170 | goto _xmit_entry_drop; |
171 | } | |
172 | if ((!r8712_update_attrib(padapter, pkt, &pxmitframe->attrib))) { | |
2865d42c LF |
173 | goto _xmit_entry_drop; |
174 | } | |
175 | padapter->ledpriv.LedControlHandler(padapter, LED_CTL_TX); | |
176 | pxmitframe->pkt = pkt; | |
1ca96884 | 177 | if (r8712_pre_xmit(padapter, pxmitframe)) { |
2865d42c LF |
178 | /*dump xmitframe directly or drop xframe*/ |
179 | dev_kfree_skb_any(pkt); | |
180 | pxmitframe->pkt = NULL; | |
181 | } | |
182 | pxmitpriv->tx_pkts++; | |
183 | pxmitpriv->tx_bytes += pxmitframe->attrib.last_txcmdsz; | |
40430f0c | 184 | return 0; |
2865d42c LF |
185 | _xmit_entry_drop: |
186 | if (pxmitframe) | |
187 | r8712_free_xmitframe(pxmitpriv, pxmitframe); | |
188 | pxmitpriv->tx_drop++; | |
189 | dev_kfree_skb_any(pkt); | |
40430f0c | 190 | return 0; |
2865d42c | 191 | } |