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 #include <net/cfg80211.h> 13 14 void rtw_os_free_recvframe(union recv_frame *precvframe) 15 { 16 if (precvframe->u.hdr.pkt) { 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 void rtw_os_recv_resource_alloc(struct adapter *padapter, union recv_frame *precvframe) 25 { 26 precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL; 27 } 28 29 /* free os related resource in union recv_frame */ 30 void rtw_os_recv_resource_free(struct recv_priv *precvpriv) 31 { 32 sint i; 33 union recv_frame *precvframe; 34 35 precvframe = (union recv_frame*) precvpriv->precv_frame_buf; 36 37 for (i = 0; i < NR_RECVFRAME; i++) { 38 if (precvframe->u.hdr.pkt) { 39 /* free skb by driver */ 40 dev_kfree_skb_any(precvframe->u.hdr.pkt); 41 precvframe->u.hdr.pkt = NULL; 42 } 43 precvframe++; 44 } 45 } 46 47 /* free os related resource in struct recv_buf */ 48 void rtw_os_recvbuf_resource_free(struct adapter *padapter, struct recv_buf *precvbuf) 49 { 50 if (precvbuf->pskb) { 51 dev_kfree_skb_any(precvbuf->pskb); 52 } 53 } 54 55 _pkt *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata) 56 { 57 u16 eth_type; 58 _pkt *sub_skb; 59 struct rx_pkt_attrib *pattrib; 60 61 pattrib = &prframe->u.hdr.attrib; 62 63 sub_skb = rtw_skb_alloc(nSubframe_Length + 12); 64 if (!sub_skb) { 65 DBG_871X("%s(): rtw_skb_alloc() Fail!!!\n", __func__); 66 return NULL; 67 } 68 69 skb_reserve(sub_skb, 12); 70 skb_put_data(sub_skb, (pdata + ETH_HLEN), nSubframe_Length); 71 72 eth_type = RTW_GET_BE16(&sub_skb->data[6]); 73 74 if (sub_skb->len >= 8 && 75 ((!memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) && 76 eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || 77 !memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE))) { 78 /* 79 * remove RFC1042 or Bridge-Tunnel encapsulation and replace 80 * EtherType 81 */ 82 skb_pull(sub_skb, SNAP_SIZE); 83 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN); 84 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN); 85 } else { 86 __be16 len; 87 /* Leave Ethernet header part of hdr and full payload */ 88 len = htons(sub_skb->len); 89 memcpy(skb_push(sub_skb, 2), &len, 2); 90 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN); 91 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN); 92 } 93 94 return sub_skb; 95 } 96 97 void rtw_os_recv_indicate_pkt(struct adapter *padapter, _pkt *pkt, struct rx_pkt_attrib *pattrib) 98 { 99 struct mlme_priv*pmlmepriv = &padapter->mlmepriv; 100 int ret; 101 102 /* Indicate the packets to upper layer */ 103 if (pkt) { 104 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 105 _pkt *pskb2 = NULL; 106 struct sta_info *psta = NULL; 107 struct sta_priv *pstapriv = &padapter->stapriv; 108 int bmcast = IS_MCAST(pattrib->dst); 109 110 if (memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)) { 111 if (bmcast) { 112 psta = rtw_get_bcmc_stainfo(padapter); 113 pskb2 = skb_clone(pkt, GFP_ATOMIC); 114 } else { 115 psta = rtw_get_stainfo(pstapriv, pattrib->dst); 116 } 117 118 if (psta) { 119 struct net_device *pnetdev = (struct net_device*)padapter->pnetdev; 120 /* skb->ip_summed = CHECKSUM_NONE; */ 121 pkt->dev = pnetdev; 122 skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt)); 123 124 _rtw_xmit_entry(pkt, pnetdev); 125 126 if (bmcast && (pskb2 != NULL)) { 127 pkt = pskb2; 128 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_mcast); 129 } else { 130 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_forward); 131 return; 132 } 133 } 134 } else { 135 /* to APself */ 136 /* DBG_871X("to APSelf\n"); */ 137 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_self); 138 } 139 } 140 141 pkt->protocol = eth_type_trans(pkt, padapter->pnetdev); 142 pkt->dev = padapter->pnetdev; 143 144 #ifdef CONFIG_TCP_CSUM_OFFLOAD_RX 145 if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1)) 146 pkt->ip_summed = CHECKSUM_UNNECESSARY; 147 else 148 pkt->ip_summed = CHECKSUM_NONE; 149 150 #else /* !CONFIG_TCP_CSUM_OFFLOAD_RX */ 151 pkt->ip_summed = CHECKSUM_NONE; 152 #endif /* CONFIG_TCP_CSUM_OFFLOAD_RX */ 153 154 ret = rtw_netif_rx(padapter->pnetdev, pkt); 155 if (ret == NET_RX_SUCCESS) 156 DBG_COUNTER(padapter->rx_logs.os_netif_ok); 157 else 158 DBG_COUNTER(padapter->rx_logs.os_netif_err); 159 } 160 } 161 162 void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup) 163 { 164 enum nl80211_key_type key_type = 0; 165 union iwreq_data wrqu; 166 struct iw_michaelmicfailure ev; 167 struct mlme_priv* pmlmepriv = &padapter->mlmepriv; 168 struct security_priv *psecuritypriv = &padapter->securitypriv; 169 unsigned long cur_time = 0; 170 171 if (psecuritypriv->last_mic_err_time == 0) { 172 psecuritypriv->last_mic_err_time = jiffies; 173 } else { 174 cur_time = jiffies; 175 176 if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) { 177 psecuritypriv->btkip_countermeasure = true; 178 psecuritypriv->last_mic_err_time = 0; 179 psecuritypriv->btkip_countermeasure_time = cur_time; 180 } else { 181 psecuritypriv->last_mic_err_time = jiffies; 182 } 183 } 184 185 if (bgroup) { 186 key_type |= NL80211_KEYTYPE_GROUP; 187 } else { 188 key_type |= NL80211_KEYTYPE_PAIRWISE; 189 } 190 191 cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[0], key_type, -1, 192 NULL, GFP_ATOMIC); 193 194 memset(&ev, 0x00, sizeof(ev)); 195 if (bgroup) { 196 ev.flags |= IW_MICFAILURE_GROUP; 197 } else { 198 ev.flags |= IW_MICFAILURE_PAIRWISE; 199 } 200 201 ev.src_addr.sa_family = ARPHRD_ETHER; 202 memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN); 203 204 memset(&wrqu, 0x00, sizeof(wrqu)); 205 wrqu.data.length = sizeof(ev); 206 } 207 208 #ifdef CONFIG_AUTO_AP_MODE 209 static void rtw_os_ksocket_send(struct adapter *padapter, union recv_frame *precv_frame) 210 { 211 _pkt *skb = precv_frame->u.hdr.pkt; 212 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 213 struct sta_info *psta = precv_frame->u.hdr.psta; 214 215 DBG_871X("eth rx: got eth_type = 0x%x\n", pattrib->eth_type); 216 217 if (psta && psta->isrc && psta->pid > 0) { 218 u16 rx_pid; 219 220 rx_pid = *(u16*)(skb->data+ETH_HLEN); 221 222 DBG_871X("eth rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n", 223 rx_pid, MAC_ARG(psta->hwaddr), psta->pid); 224 225 if (rx_pid == psta->pid) { 226 int i; 227 u16 len = *(u16 *)(skb->data+ETH_HLEN+2); 228 DBG_871X("eth, RC: len = 0x%x\n", len); 229 230 for (i = 0; i < len; i++) 231 DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+4+i)); 232 233 DBG_871X("eth, RC-end\n"); 234 } 235 236 } 237 238 } 239 #endif /* CONFIG_AUTO_AP_MODE */ 240 241 int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame) 242 { 243 struct recv_priv *precvpriv; 244 struct __queue *pfree_recv_queue; 245 _pkt *skb; 246 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 247 248 DBG_COUNTER(padapter->rx_logs.os_indicate); 249 250 precvpriv = &(padapter->recvpriv); 251 pfree_recv_queue = &(precvpriv->free_recv_queue); 252 253 skb = precv_frame->u.hdr.pkt; 254 if (skb == NULL) { 255 RT_TRACE(_module_recv_osdep_c_, _drv_err_, ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n")); 256 goto _recv_indicatepkt_drop; 257 } 258 259 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("rtw_recv_indicatepkt():skb != NULL !!!\n")); 260 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)); 261 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)); 262 263 skb->data = precv_frame->u.hdr.rx_data; 264 265 skb_set_tail_pointer(skb, precv_frame->u.hdr.len); 266 267 skb->len = precv_frame->u.hdr.len; 268 269 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)); 270 271 #ifdef CONFIG_AUTO_AP_MODE 272 if (0x8899 == pattrib->eth_type) { 273 rtw_os_ksocket_send(padapter, precv_frame); 274 275 /* goto _recv_indicatepkt_drop; */ 276 } 277 #endif /* CONFIG_AUTO_AP_MODE */ 278 279 rtw_os_recv_indicate_pkt(padapter, skb, pattrib); 280 281 /* pointers to NULL before rtw_free_recvframe() */ 282 precv_frame->u.hdr.pkt = NULL; 283 284 rtw_free_recvframe(precv_frame, pfree_recv_queue); 285 286 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("\n rtw_recv_indicatepkt :after rtw_os_recv_indicate_pkt!!!!\n")); 287 288 return _SUCCESS; 289 290 _recv_indicatepkt_drop: 291 292 /* enqueue back to free_recv_queue */ 293 rtw_free_recvframe(precv_frame, pfree_recv_queue); 294 295 DBG_COUNTER(padapter->rx_logs.os_indicate_err); 296 return _FAIL; 297 } 298 299 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl) 300 { 301 timer_setup(&preorder_ctrl->reordering_ctrl_timer, 302 rtw_reordering_ctrl_timeout_handler, 0); 303 304 } 305