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 #include <asm/unaligned.h> 14 15 void rtw_os_free_recvframe(union recv_frame *precvframe) 16 { 17 if (precvframe->u.hdr.pkt) { 18 dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */ 19 20 precvframe->u.hdr.pkt = NULL; 21 } 22 } 23 24 /* alloc os related resource in union recv_frame */ 25 void rtw_os_recv_resource_alloc(struct adapter *padapter, union recv_frame *precvframe) 26 { 27 precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL; 28 } 29 30 /* free os related resource in union recv_frame */ 31 void rtw_os_recv_resource_free(struct recv_priv *precvpriv) 32 { 33 sint i; 34 union recv_frame *precvframe; 35 36 precvframe = (union recv_frame *) precvpriv->precv_frame_buf; 37 38 for (i = 0; i < NR_RECVFRAME; i++) { 39 if (precvframe->u.hdr.pkt) { 40 /* free skb by driver */ 41 dev_kfree_skb_any(precvframe->u.hdr.pkt); 42 precvframe->u.hdr.pkt = NULL; 43 } 44 precvframe++; 45 } 46 } 47 48 /* free os related resource in struct recv_buf */ 49 void rtw_os_recvbuf_resource_free(struct adapter *padapter, struct recv_buf *precvbuf) 50 { 51 if (precvbuf->pskb) { 52 dev_kfree_skb_any(precvbuf->pskb); 53 } 54 } 55 56 _pkt *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata) 57 { 58 u16 eth_type; 59 _pkt *sub_skb; 60 struct rx_pkt_attrib *pattrib; 61 62 pattrib = &prframe->u.hdr.attrib; 63 64 sub_skb = rtw_skb_alloc(nSubframe_Length + 12); 65 if (!sub_skb) { 66 DBG_871X("%s(): rtw_skb_alloc() Fail!!!\n", __func__); 67 return NULL; 68 } 69 70 skb_reserve(sub_skb, 12); 71 skb_put_data(sub_skb, (pdata + ETH_HLEN), nSubframe_Length); 72 73 eth_type = get_unaligned_be16(&sub_skb->data[6]); 74 75 if (sub_skb->len >= 8 && 76 ((!memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) && 77 eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || 78 !memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE))) { 79 /* 80 * remove RFC1042 or Bridge-Tunnel encapsulation and replace 81 * EtherType 82 */ 83 skb_pull(sub_skb, SNAP_SIZE); 84 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN); 85 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN); 86 } else { 87 __be16 len; 88 /* Leave Ethernet header part of hdr and full payload */ 89 len = htons(sub_skb->len); 90 memcpy(skb_push(sub_skb, 2), &len, 2); 91 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN); 92 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN); 93 } 94 95 return sub_skb; 96 } 97 98 void rtw_os_recv_indicate_pkt(struct adapter *padapter, _pkt *pkt, struct rx_pkt_attrib *pattrib) 99 { 100 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 101 int ret; 102 103 /* Indicate the packets to upper layer */ 104 if (pkt) { 105 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 106 _pkt *pskb2 = NULL; 107 struct sta_info *psta = NULL; 108 struct sta_priv *pstapriv = &padapter->stapriv; 109 int bmcast = IS_MCAST(pattrib->dst); 110 111 if (memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)) { 112 if (bmcast) { 113 psta = rtw_get_bcmc_stainfo(padapter); 114 pskb2 = skb_clone(pkt, GFP_ATOMIC); 115 } else { 116 psta = rtw_get_stainfo(pstapriv, pattrib->dst); 117 } 118 119 if (psta) { 120 struct net_device *pnetdev = (struct net_device *)padapter->pnetdev; 121 /* skb->ip_summed = CHECKSUM_NONE; */ 122 pkt->dev = pnetdev; 123 skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt)); 124 125 _rtw_xmit_entry(pkt, pnetdev); 126 127 if (bmcast && pskb2) { 128 pkt = pskb2; 129 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_mcast); 130 } else { 131 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_forward); 132 return; 133 } 134 } 135 } else { 136 /* to APself */ 137 /* DBG_871X("to APSelf\n"); */ 138 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_self); 139 } 140 } 141 142 pkt->protocol = eth_type_trans(pkt, padapter->pnetdev); 143 pkt->dev = padapter->pnetdev; 144 145 #ifdef CONFIG_TCP_CSUM_OFFLOAD_RX 146 if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1)) 147 pkt->ip_summed = CHECKSUM_UNNECESSARY; 148 else 149 pkt->ip_summed = CHECKSUM_NONE; 150 151 #else /* !CONFIG_TCP_CSUM_OFFLOAD_RX */ 152 pkt->ip_summed = CHECKSUM_NONE; 153 #endif /* CONFIG_TCP_CSUM_OFFLOAD_RX */ 154 155 ret = rtw_netif_rx(padapter->pnetdev, pkt); 156 if (ret == NET_RX_SUCCESS) 157 DBG_COUNTER(padapter->rx_logs.os_netif_ok); 158 else 159 DBG_COUNTER(padapter->rx_logs.os_netif_err); 160 } 161 } 162 163 void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup) 164 { 165 enum nl80211_key_type key_type = 0; 166 union iwreq_data wrqu; 167 struct iw_michaelmicfailure ev; 168 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 169 struct security_priv *psecuritypriv = &padapter->securitypriv; 170 unsigned long cur_time = 0; 171 172 if (psecuritypriv->last_mic_err_time == 0) { 173 psecuritypriv->last_mic_err_time = jiffies; 174 } else { 175 cur_time = jiffies; 176 177 if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) { 178 psecuritypriv->btkip_countermeasure = true; 179 psecuritypriv->last_mic_err_time = 0; 180 psecuritypriv->btkip_countermeasure_time = cur_time; 181 } else { 182 psecuritypriv->last_mic_err_time = jiffies; 183 } 184 } 185 186 if (bgroup) { 187 key_type |= NL80211_KEYTYPE_GROUP; 188 } else { 189 key_type |= NL80211_KEYTYPE_PAIRWISE; 190 } 191 192 cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[0], key_type, -1, 193 NULL, GFP_ATOMIC); 194 195 memset(&ev, 0x00, sizeof(ev)); 196 if (bgroup) { 197 ev.flags |= IW_MICFAILURE_GROUP; 198 } else { 199 ev.flags |= IW_MICFAILURE_PAIRWISE; 200 } 201 202 ev.src_addr.sa_family = ARPHRD_ETHER; 203 memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN); 204 205 memset(&wrqu, 0x00, sizeof(wrqu)); 206 wrqu.data.length = sizeof(ev); 207 } 208 209 #ifdef CONFIG_AUTO_AP_MODE 210 static void rtw_os_ksocket_send(struct adapter *padapter, union recv_frame *precv_frame) 211 { 212 _pkt *skb = precv_frame->u.hdr.pkt; 213 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 214 struct sta_info *psta = precv_frame->u.hdr.psta; 215 216 DBG_871X("eth rx: got eth_type = 0x%x\n", pattrib->eth_type); 217 218 if (psta && psta->isrc && psta->pid > 0) { 219 u16 rx_pid; 220 221 rx_pid = *(u16 *)(skb->data+ETH_HLEN); 222 223 DBG_871X("eth rx(pid = 0x%x): sta(%pM) pid = 0x%x\n", 224 rx_pid, MAC_ARG(psta->hwaddr), psta->pid); 225 226 if (rx_pid == psta->pid) { 227 int i; 228 u16 len = *(u16 *)(skb->data+ETH_HLEN+2); 229 DBG_871X("eth, RC: len = 0x%x\n", len); 230 231 for (i = 0; i < len; i++) 232 DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+4+i)); 233 234 DBG_871X("eth, RC-end\n"); 235 } 236 237 } 238 239 } 240 #endif /* CONFIG_AUTO_AP_MODE */ 241 242 int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame) 243 { 244 struct recv_priv *precvpriv; 245 struct __queue *pfree_recv_queue; 246 _pkt *skb; 247 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 248 249 DBG_COUNTER(padapter->rx_logs.os_indicate); 250 251 precvpriv = &(padapter->recvpriv); 252 pfree_recv_queue = &(precvpriv->free_recv_queue); 253 254 skb = precv_frame->u.hdr.pkt; 255 if (skb == NULL) { 256 RT_TRACE(_module_recv_osdep_c_, _drv_err_, ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n")); 257 goto _recv_indicatepkt_drop; 258 } 259 260 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("rtw_recv_indicatepkt():skb != NULL !!!\n")); 261 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)); 262 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)); 263 264 skb->data = precv_frame->u.hdr.rx_data; 265 266 skb_set_tail_pointer(skb, precv_frame->u.hdr.len); 267 268 skb->len = precv_frame->u.hdr.len; 269 270 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)); 271 272 #ifdef CONFIG_AUTO_AP_MODE 273 if (0x8899 == pattrib->eth_type) { 274 rtw_os_ksocket_send(padapter, precv_frame); 275 276 /* goto _recv_indicatepkt_drop; */ 277 } 278 #endif /* CONFIG_AUTO_AP_MODE */ 279 280 rtw_os_recv_indicate_pkt(padapter, skb, pattrib); 281 282 /* pointers to NULL before rtw_free_recvframe() */ 283 precv_frame->u.hdr.pkt = NULL; 284 285 rtw_free_recvframe(precv_frame, pfree_recv_queue); 286 287 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("\n rtw_recv_indicatepkt :after rtw_os_recv_indicate_pkt!!!!\n")); 288 289 return _SUCCESS; 290 291 _recv_indicatepkt_drop: 292 293 /* enqueue back to free_recv_queue */ 294 rtw_free_recvframe(precv_frame, pfree_recv_queue); 295 296 DBG_COUNTER(padapter->rx_logs.os_indicate_err); 297 return _FAIL; 298 } 299 300 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl) 301 { 302 timer_setup(&preorder_ctrl->reordering_ctrl_timer, 303 rtw_reordering_ctrl_timeout_handler, 0); 304 305 } 306