1 // SPDX-License-Identifier: GPL-2.0 2 /****************************************************************************** 3 * 4 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved. 5 * 6 ******************************************************************************/ 7 #define _RECV_OSDEP_C_ 8 9 #include <drv_types.h> 10 #include <rtw_debug.h> 11 #include <linux/jiffies.h> 12 13 void rtw_os_free_recvframe(union recv_frame *precvframe) 14 { 15 if (precvframe->u.hdr.pkt) 16 { 17 dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */ 18 19 precvframe->u.hdr.pkt = NULL; 20 } 21 } 22 23 /* alloc os related resource in union recv_frame */ 24 int rtw_os_recv_resource_alloc(struct adapter *padapter, union recv_frame *precvframe) 25 { 26 int res = _SUCCESS; 27 28 precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL; 29 30 return res; 31 } 32 33 /* free os related resource in union recv_frame */ 34 void rtw_os_recv_resource_free(struct recv_priv *precvpriv) 35 { 36 sint i; 37 union recv_frame *precvframe; 38 39 precvframe = (union recv_frame*) precvpriv->precv_frame_buf; 40 41 for (i = 0; i < NR_RECVFRAME; i++) 42 { 43 if (precvframe->u.hdr.pkt) 44 { 45 dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */ 46 precvframe->u.hdr.pkt = NULL; 47 } 48 precvframe++; 49 } 50 } 51 52 /* free os related resource in struct recv_buf */ 53 int rtw_os_recvbuf_resource_free(struct adapter *padapter, struct recv_buf *precvbuf) 54 { 55 int ret = _SUCCESS; 56 57 if (precvbuf->pskb) 58 { 59 dev_kfree_skb_any(precvbuf->pskb); 60 } 61 return ret; 62 63 } 64 65 _pkt *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata) 66 { 67 u16 eth_type; 68 _pkt *sub_skb; 69 struct rx_pkt_attrib *pattrib; 70 71 pattrib = &prframe->u.hdr.attrib; 72 73 sub_skb = rtw_skb_alloc(nSubframe_Length + 12); 74 if (sub_skb) 75 { 76 skb_reserve(sub_skb, 12); 77 skb_put_data(sub_skb, (pdata + ETH_HLEN), nSubframe_Length); 78 } 79 else 80 { 81 sub_skb = rtw_skb_clone(prframe->u.hdr.pkt); 82 if (sub_skb) 83 { 84 sub_skb->data = pdata + ETH_HLEN; 85 sub_skb->len = nSubframe_Length; 86 skb_set_tail_pointer(sub_skb, nSubframe_Length); 87 } 88 else 89 { 90 DBG_871X("%s(): rtw_skb_clone() Fail!!!\n", __func__); 91 return NULL; 92 } 93 } 94 95 eth_type = RTW_GET_BE16(&sub_skb->data[6]); 96 97 if (sub_skb->len >= 8 && 98 ((!memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) && 99 eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || 100 !memcmp(sub_skb->data, rtw_bridge_tunnel_header, SNAP_SIZE))) { 101 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */ 102 skb_pull(sub_skb, SNAP_SIZE); 103 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN); 104 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN); 105 } else { 106 __be16 len; 107 /* Leave Ethernet header part of hdr and full payload */ 108 len = htons(sub_skb->len); 109 memcpy(skb_push(sub_skb, 2), &len, 2); 110 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN); 111 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN); 112 } 113 114 return sub_skb; 115 } 116 117 void rtw_os_recv_indicate_pkt(struct adapter *padapter, _pkt *pkt, struct rx_pkt_attrib *pattrib) 118 { 119 struct mlme_priv*pmlmepriv = &padapter->mlmepriv; 120 int ret; 121 122 /* Indicat the packets to upper layer */ 123 if (pkt) { 124 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) 125 { 126 _pkt *pskb2 = NULL; 127 struct sta_info *psta = NULL; 128 struct sta_priv *pstapriv = &padapter->stapriv; 129 int bmcast = IS_MCAST(pattrib->dst); 130 131 /* DBG_871X("bmcast =%d\n", bmcast); */ 132 133 if (memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)) 134 { 135 /* DBG_871X("not ap psta =%p, addr =%pM\n", psta, pattrib->dst); */ 136 137 if (bmcast) 138 { 139 psta = rtw_get_bcmc_stainfo(padapter); 140 pskb2 = rtw_skb_clone(pkt); 141 } else { 142 psta = rtw_get_stainfo(pstapriv, pattrib->dst); 143 } 144 145 if (psta) 146 { 147 struct net_device *pnetdev = (struct net_device*)padapter->pnetdev; 148 149 /* DBG_871X("directly forwarding to the rtw_xmit_entry\n"); */ 150 151 /* skb->ip_summed = CHECKSUM_NONE; */ 152 pkt->dev = pnetdev; 153 skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt)); 154 155 _rtw_xmit_entry(pkt, pnetdev); 156 157 if (bmcast && (pskb2 != NULL)) { 158 pkt = pskb2; 159 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_mcast); 160 } else { 161 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_forward); 162 return; 163 } 164 } 165 } 166 else/* to APself */ 167 { 168 /* DBG_871X("to APSelf\n"); */ 169 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_self); 170 } 171 } 172 173 pkt->protocol = eth_type_trans(pkt, padapter->pnetdev); 174 pkt->dev = padapter->pnetdev; 175 176 #ifdef CONFIG_TCP_CSUM_OFFLOAD_RX 177 if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1)) 178 pkt->ip_summed = CHECKSUM_UNNECESSARY; 179 else 180 pkt->ip_summed = CHECKSUM_NONE; 181 182 #else /* !CONFIG_TCP_CSUM_OFFLOAD_RX */ 183 pkt->ip_summed = CHECKSUM_NONE; 184 #endif /* CONFIG_TCP_CSUM_OFFLOAD_RX */ 185 186 ret = rtw_netif_rx(padapter->pnetdev, pkt); 187 if (ret == NET_RX_SUCCESS) 188 DBG_COUNTER(padapter->rx_logs.os_netif_ok); 189 else 190 DBG_COUNTER(padapter->rx_logs.os_netif_err); 191 } 192 } 193 194 void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup) 195 { 196 enum nl80211_key_type key_type = 0; 197 union iwreq_data wrqu; 198 struct iw_michaelmicfailure ev; 199 struct mlme_priv* pmlmepriv = &padapter->mlmepriv; 200 struct security_priv *psecuritypriv = &padapter->securitypriv; 201 unsigned long cur_time = 0; 202 203 if (psecuritypriv->last_mic_err_time == 0) 204 { 205 psecuritypriv->last_mic_err_time = jiffies; 206 } 207 else 208 { 209 cur_time = jiffies; 210 211 if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) 212 { 213 psecuritypriv->btkip_countermeasure = true; 214 psecuritypriv->last_mic_err_time = 0; 215 psecuritypriv->btkip_countermeasure_time = cur_time; 216 } 217 else 218 { 219 psecuritypriv->last_mic_err_time = jiffies; 220 } 221 } 222 223 if (bgroup) 224 { 225 key_type |= NL80211_KEYTYPE_GROUP; 226 } 227 else 228 { 229 key_type |= NL80211_KEYTYPE_PAIRWISE; 230 } 231 232 cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[ 0 ], key_type, -1, 233 NULL, GFP_ATOMIC); 234 235 memset(&ev, 0x00, sizeof(ev)); 236 if (bgroup) 237 { 238 ev.flags |= IW_MICFAILURE_GROUP; 239 } 240 else 241 { 242 ev.flags |= IW_MICFAILURE_PAIRWISE; 243 } 244 245 ev.src_addr.sa_family = ARPHRD_ETHER; 246 memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[ 0 ], ETH_ALEN); 247 248 memset(&wrqu, 0x00, sizeof(wrqu)); 249 wrqu.data.length = sizeof(ev); 250 } 251 252 #ifdef CONFIG_AUTO_AP_MODE 253 static void rtw_os_ksocket_send(struct adapter *padapter, union recv_frame *precv_frame) 254 { 255 _pkt *skb = precv_frame->u.hdr.pkt; 256 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 257 struct sta_info *psta = precv_frame->u.hdr.psta; 258 259 DBG_871X("eth rx: got eth_type = 0x%x\n", pattrib->eth_type); 260 261 if (psta && psta->isrc && psta->pid>0) 262 { 263 u16 rx_pid; 264 265 rx_pid = *(u16*)(skb->data+ETH_HLEN); 266 267 DBG_871X("eth rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n", 268 rx_pid, MAC_ARG(psta->hwaddr), psta->pid); 269 270 if (rx_pid == psta->pid) 271 { 272 int i; 273 u16 len = *(u16*)(skb->data+ETH_HLEN+2); 274 /* u16 ctrl_type = *(u16*)(skb->data+ETH_HLEN+4); */ 275 276 /* DBG_871X("eth, RC: len = 0x%x, ctrl_type = 0x%x\n", len, ctrl_type); */ 277 DBG_871X("eth, RC: len = 0x%x\n", len); 278 279 for (i = 0;i<len;i++) 280 DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+4+i)); 281 /* DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+6+i)); */ 282 283 DBG_871X("eth, RC-end\n"); 284 } 285 286 } 287 288 } 289 #endif /* CONFIG_AUTO_AP_MODE */ 290 291 int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame) 292 { 293 struct recv_priv *precvpriv; 294 struct __queue *pfree_recv_queue; 295 _pkt *skb; 296 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 297 298 DBG_COUNTER(padapter->rx_logs.os_indicate); 299 300 precvpriv = &(padapter->recvpriv); 301 pfree_recv_queue = &(precvpriv->free_recv_queue); 302 303 skb = precv_frame->u.hdr.pkt; 304 if (skb == NULL) 305 { 306 RT_TRACE(_module_recv_osdep_c_, _drv_err_, ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n")); 307 goto _recv_indicatepkt_drop; 308 } 309 310 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("rtw_recv_indicatepkt():skb != NULL !!!\n")); 311 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("rtw_recv_indicatepkt():precv_frame->u.hdr.rx_head =%p precv_frame->hdr.rx_data =%p\n", precv_frame->u.hdr.rx_head, precv_frame->u.hdr.rx_data)); 312 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("precv_frame->hdr.rx_tail =%p precv_frame->u.hdr.rx_end =%p precv_frame->hdr.len =%d\n", precv_frame->u.hdr.rx_tail, precv_frame->u.hdr.rx_end, precv_frame->u.hdr.len)); 313 314 skb->data = precv_frame->u.hdr.rx_data; 315 316 skb_set_tail_pointer(skb, precv_frame->u.hdr.len); 317 318 skb->len = precv_frame->u.hdr.len; 319 320 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("\n skb->head =%p skb->data =%p skb->tail =%p skb->end =%p skb->len =%d\n", skb->head, skb->data, skb_tail_pointer(skb), skb_end_pointer(skb), skb->len)); 321 322 #ifdef CONFIG_AUTO_AP_MODE 323 if (0x8899 == pattrib->eth_type) 324 { 325 rtw_os_ksocket_send(padapter, precv_frame); 326 327 /* goto _recv_indicatepkt_drop; */ 328 } 329 #endif /* CONFIG_AUTO_AP_MODE */ 330 331 rtw_os_recv_indicate_pkt(padapter, skb, pattrib); 332 333 precv_frame->u.hdr.pkt = NULL; /* pointers to NULL before rtw_free_recvframe() */ 334 335 rtw_free_recvframe(precv_frame, pfree_recv_queue); 336 337 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("\n rtw_recv_indicatepkt :after rtw_os_recv_indicate_pkt!!!!\n")); 338 339 return _SUCCESS; 340 341 _recv_indicatepkt_drop: 342 343 /* enqueue back to free_recv_queue */ 344 rtw_free_recvframe(precv_frame, pfree_recv_queue); 345 346 DBG_COUNTER(padapter->rx_logs.os_indicate_err); 347 return _FAIL; 348 } 349 350 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl) 351 { 352 timer_setup(&preorder_ctrl->reordering_ctrl_timer, 353 rtw_reordering_ctrl_timeout_handler, 0); 354 355 } 356