Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * recv_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 _RECV_OSDEP_C_ |
| 30 | |
Ali Bahar | 359140a | 2011-09-04 03:14:11 +0800 | [diff] [blame] | 31 | #include <linux/usb.h> |
| 32 | |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 33 | #include "osdep_service.h" |
| 34 | #include "drv_types.h" |
| 35 | #include "wifi.h" |
| 36 | #include "recv_osdep.h" |
| 37 | #include "osdep_intf.h" |
Ali Bahar | 359140a | 2011-09-04 03:14:11 +0800 | [diff] [blame] | 38 | #include "ethernet.h" |
| 39 | #include <linux/if_arp.h> |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 40 | #include "usb_ops.h" |
| 41 | |
| 42 | /*init os related resource in struct recv_priv*/ |
| 43 | /*alloc os related resource in union recv_frame*/ |
| 44 | int r8712_os_recv_resource_alloc(struct _adapter *padapter, |
| 45 | union recv_frame *precvframe) |
| 46 | { |
| 47 | precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL; |
| 48 | return _SUCCESS; |
| 49 | } |
| 50 | |
| 51 | /*alloc os related resource in struct recv_buf*/ |
| 52 | int r8712_os_recvbuf_resource_alloc(struct _adapter *padapter, |
| 53 | struct recv_buf *precvbuf) |
| 54 | { |
| 55 | int res = _SUCCESS; |
| 56 | |
| 57 | precvbuf->irp_pending = false; |
Ali Bahar | 68e9b24 | 2011-09-04 03:14:07 +0800 | [diff] [blame] | 58 | precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL); |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 59 | if (precvbuf->purb == NULL) |
| 60 | res = _FAIL; |
| 61 | precvbuf->pskb = NULL; |
| 62 | precvbuf->reuse = false; |
| 63 | precvbuf->pallocated_buf = NULL; |
| 64 | precvbuf->pbuf = NULL; |
| 65 | precvbuf->pdata = NULL; |
| 66 | precvbuf->phead = NULL; |
| 67 | precvbuf->ptail = NULL; |
| 68 | precvbuf->pend = NULL; |
| 69 | precvbuf->transfer_len = 0; |
| 70 | precvbuf->len = 0; |
| 71 | return res; |
| 72 | } |
| 73 | |
| 74 | /*free os related resource in struct recv_buf*/ |
| 75 | int r8712_os_recvbuf_resource_free(struct _adapter *padapter, |
| 76 | struct recv_buf *precvbuf) |
| 77 | { |
| 78 | if (precvbuf->pskb) |
| 79 | dev_kfree_skb_any(precvbuf->pskb); |
| 80 | if (precvbuf->purb) { |
| 81 | usb_kill_urb(precvbuf->purb); |
| 82 | usb_free_urb(precvbuf->purb); |
| 83 | } |
| 84 | return _SUCCESS; |
| 85 | } |
| 86 | |
| 87 | void r8712_handle_tkip_mic_err(struct _adapter *padapter, u8 bgroup) |
| 88 | { |
| 89 | union iwreq_data wrqu; |
| 90 | struct iw_michaelmicfailure ev; |
| 91 | struct mlme_priv *pmlmepriv = &padapter->mlmepriv; |
| 92 | |
| 93 | memset(&ev, 0x00, sizeof(ev)); |
| 94 | if (bgroup) |
| 95 | ev.flags |= IW_MICFAILURE_GROUP; |
| 96 | else |
| 97 | ev.flags |= IW_MICFAILURE_PAIRWISE; |
| 98 | ev.src_addr.sa_family = ARPHRD_ETHER; |
| 99 | memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN); |
| 100 | memset(&wrqu, 0x00, sizeof(wrqu)); |
| 101 | wrqu.data.length = sizeof(ev); |
| 102 | wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu, |
| 103 | (char *)&ev); |
| 104 | } |
| 105 | |
| 106 | void r8712_recv_indicatepkt(struct _adapter *padapter, |
| 107 | union recv_frame *precv_frame) |
| 108 | { |
| 109 | struct recv_priv *precvpriv; |
| 110 | struct __queue *pfree_recv_queue; |
| 111 | _pkt *skb; |
| 112 | struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; |
| 113 | |
| 114 | precvpriv = &(padapter->recvpriv); |
| 115 | pfree_recv_queue = &(precvpriv->free_recv_queue); |
| 116 | skb = precv_frame->u.hdr.pkt; |
| 117 | if (skb == NULL) |
| 118 | goto _recv_indicatepkt_drop; |
| 119 | skb->data = precv_frame->u.hdr.rx_data; |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 120 | skb->len = precv_frame->u.hdr.len; |
Eric Dumazet | abf02cf | 2012-09-10 21:22:11 +0200 | [diff] [blame] | 121 | skb_set_tail_pointer(skb, skb->len); |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 122 | if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1)) |
| 123 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 124 | else |
| 125 | skb->ip_summed = CHECKSUM_NONE; |
| 126 | skb->dev = padapter->pnetdev; |
| 127 | skb->protocol = eth_type_trans(skb, padapter->pnetdev); |
| 128 | netif_rx(skb); |
| 129 | precv_frame->u.hdr.pkt = NULL; /* pointers to NULL before |
| 130 | * r8712_free_recvframe() */ |
| 131 | r8712_free_recvframe(precv_frame, pfree_recv_queue); |
| 132 | return; |
| 133 | _recv_indicatepkt_drop: |
| 134 | /*enqueue back to free_recv_queue*/ |
| 135 | if (precv_frame) |
| 136 | r8712_free_recvframe(precv_frame, pfree_recv_queue); |
| 137 | precvpriv->rx_drop++; |
| 138 | } |
| 139 | |
| 140 | void r8712_os_read_port(struct _adapter *padapter, struct recv_buf *precvbuf) |
| 141 | { |
| 142 | struct recv_priv *precvpriv = &padapter->recvpriv; |
| 143 | |
| 144 | precvbuf->ref_cnt--; |
| 145 | /*free skb in recv_buf*/ |
| 146 | dev_kfree_skb_any(precvbuf->pskb); |
| 147 | precvbuf->pskb = NULL; |
| 148 | precvbuf->reuse = false; |
| 149 | if (precvbuf->irp_pending == false) |
| 150 | r8712_read_port(padapter, precvpriv->ff_hwaddr, 0, |
| 151 | (unsigned char *)precvbuf); |
| 152 | } |
| 153 | |
| 154 | static void _r8712_reordering_ctrl_timeout_handler (void *FunctionContext) |
| 155 | { |
| 156 | struct recv_reorder_ctrl *preorder_ctrl = |
| 157 | (struct recv_reorder_ctrl *)FunctionContext; |
| 158 | |
| 159 | r8712_reordering_ctrl_timeout_handler(preorder_ctrl); |
| 160 | } |
| 161 | |
| 162 | void r8712_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl) |
| 163 | { |
| 164 | struct _adapter *padapter = preorder_ctrl->padapter; |
| 165 | |
| 166 | _init_timer(&(preorder_ctrl->reordering_ctrl_timer), padapter->pnetdev, |
| 167 | _r8712_reordering_ctrl_timeout_handler, preorder_ctrl); |
| 168 | } |