diff options
Diffstat (limited to 'drivers/staging/r8188eu/core/rtw_recv.c')
-rw-r--r-- | drivers/staging/r8188eu/core/rtw_recv.c | 721 |
1 files changed, 388 insertions, 333 deletions
diff --git a/drivers/staging/r8188eu/core/rtw_recv.c b/drivers/staging/r8188eu/core/rtw_recv.c index 51a13262a226..bb5c3b3888e0 100644 --- a/drivers/staging/r8188eu/core/rtw_recv.c +++ b/drivers/staging/r8188eu/core/rtw_recv.c @@ -3,10 +3,9 @@ #define _RTW_RECV_C_ +#include <linux/ieee80211.h> #include "../include/osdep_service.h" #include "../include/drv_types.h" -#include "../include/recv_osdep.h" -#include "../include/mlme_osdep.h" #include "../include/usb_ops.h" #include "../include/wifi.h" #include "../include/rtl8188e_recv.h" @@ -16,14 +15,14 @@ static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3}; /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ static u8 rtw_bridge_tunnel_header[] = { - 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 + 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; static u8 rtw_rfc1042_header[] = { - 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 + 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; -void rtw_signal_stat_timer_hdl(struct timer_list *); +static void rtw_signal_stat_timer_hdl(struct timer_list *t); void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv) { @@ -36,6 +35,69 @@ void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv) } +static int rtl8188eu_init_recv_priv(struct adapter *padapter) +{ + struct recv_priv *precvpriv = &padapter->recvpriv; + int i, res = _SUCCESS; + struct recv_buf *precvbuf; + + tasklet_init(&precvpriv->recv_tasklet, + rtl8188eu_recv_tasklet, + (unsigned long)padapter); + + /* init recv_buf */ + rtw_init_queue(&precvpriv->free_recv_buf_queue); + + precvpriv->pallocated_recv_buf = kzalloc(NR_RECVBUFF * sizeof(struct recv_buf) + 4, + GFP_KERNEL); + if (!precvpriv->pallocated_recv_buf) { + res = _FAIL; + goto exit; + } + + precvpriv->precv_buf = (u8 *)ALIGN((size_t)(precvpriv->pallocated_recv_buf), 4); + + precvbuf = (struct recv_buf *)precvpriv->precv_buf; + + for (i = 0; i < NR_RECVBUFF; i++) { + precvbuf->pskb = NULL; + precvbuf->reuse = false; + precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL); + if (!precvbuf->purb) { + res = _FAIL; + break; + } + precvbuf->adapter = padapter; + precvbuf++; + } + precvpriv->free_recv_buf_queue_cnt = NR_RECVBUFF; + skb_queue_head_init(&precvpriv->rx_skb_queue); + { + int i; + size_t tmpaddr = 0; + size_t alignment = 0; + struct sk_buff *pskb = NULL; + + skb_queue_head_init(&precvpriv->free_recv_skb_queue); + + for (i = 0; i < NR_PREALLOC_RECV_SKB; i++) { + pskb = __netdev_alloc_skb(padapter->pnetdev, + MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ, GFP_KERNEL); + if (pskb) { + pskb->dev = padapter->pnetdev; + tmpaddr = (size_t)pskb->data; + alignment = tmpaddr & (RECVBUFF_ALIGN_SZ - 1); + skb_reserve(pskb, (RECVBUFF_ALIGN_SZ - alignment)); + + skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb); + } + pskb = NULL; + } + } +exit: + return res; +} + int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter) { int i; @@ -54,8 +116,6 @@ int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter) precvpriv->free_recvframe_cnt = NR_RECVFRAME; - rtw_os_recv_resource_init(precvpriv, padapter); - precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(struct recv_frame) + RXFRAME_ALIGN_SZ); if (!precvpriv->pallocated_frame_buf) { @@ -63,7 +123,7 @@ int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter) goto exit; } - precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ); + precvpriv->precv_frame_buf = (u8 *)ALIGN((size_t)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ); precvframe = (struct recv_frame *)precvpriv->precv_frame_buf; @@ -72,7 +132,7 @@ int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter) list_add_tail(&precvframe->list, &precvpriv->free_recv_queue.queue); - res = rtw_os_recv_resource_alloc(padapter, precvframe); + precvframe->pkt = NULL; precvframe->len = 0; @@ -81,8 +141,6 @@ int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter) } precvpriv->rx_pending_cnt = 1; - sema_init(&precvpriv->allrxreturnevt, 0); - res = rtl8188eu_init_recv_priv(padapter); timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl, 0); @@ -94,17 +152,36 @@ exit: return res; } +static void rtl8188eu_free_recv_priv(struct adapter *padapter) +{ + int i; + struct recv_buf *precvbuf; + struct recv_priv *precvpriv = &padapter->recvpriv; + + precvbuf = (struct recv_buf *)precvpriv->precv_buf; + + for (i = 0; i < NR_RECVBUFF; i++) { + usb_free_urb(precvbuf->purb); + precvbuf++; + } + + kfree(precvpriv->pallocated_recv_buf); + + skb_queue_purge(&precvpriv->rx_skb_queue); + + skb_queue_purge(&precvpriv->free_recv_skb_queue); +} + void _rtw_free_recv_priv(struct recv_priv *precvpriv) { struct adapter *padapter = precvpriv->adapter; rtw_free_uc_swdec_pending_queue(padapter); - rtw_os_recv_resource_free(precvpriv); - vfree(precvpriv->pallocated_frame_buf); rtl8188eu_free_recv_priv(padapter); + _cancel_timer_ex(&precvpriv->signal_stat_timer); } struct recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue) @@ -170,10 +247,8 @@ int rtw_free_recvframe(struct recv_frame *precvframe, struct __queue *pfree_recv list_add_tail(&precvframe->list, get_list_head(pfree_recv_queue)); - if (padapter) { - if (pfree_recv_queue == &precvpriv->free_recv_queue) - precvpriv->free_recvframe_cnt++; - } + if (padapter && (pfree_recv_queue == &precvpriv->free_recv_queue)) + precvpriv->free_recvframe_cnt++; spin_unlock_bh(&pfree_recv_queue->lock); @@ -208,12 +283,12 @@ int rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue) } /* -caller : defrag ; recvframe_chk_defrag in recv_thread (passive) -pframequeue: defrag_queue : will be accessed in recv_thread (passive) - -using spinlock to protect - -*/ + * caller : defrag ; recvframe_chk_defrag in recv_thread (passive) + * pframequeue: defrag_queue : will be accessed in recv_thread (passive) + * + * using spinlock to protect + * + */ void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue) { @@ -241,15 +316,51 @@ u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter) { u32 cnt = 0; struct recv_frame *pending_frame; + while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) { rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue); - DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__); cnt++; } return cnt; } +static void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup) +{ + union iwreq_data wrqu; + struct iw_michaelmicfailure ev; + struct mlme_priv *pmlmepriv = &padapter->mlmepriv; + struct security_priv *psecuritypriv = &padapter->securitypriv; + u32 cur_time = 0; + + if (psecuritypriv->last_mic_err_time == 0) { + psecuritypriv->last_mic_err_time = jiffies; + } else { + cur_time = jiffies; + + if (cur_time - psecuritypriv->last_mic_err_time < 60 * HZ) { + psecuritypriv->btkip_countermeasure = true; + psecuritypriv->last_mic_err_time = 0; + psecuritypriv->btkip_countermeasure_time = cur_time; + } else { + psecuritypriv->last_mic_err_time = jiffies; + } + } + + memset(&ev, 0x00, sizeof(ev)); + if (bgroup) + ev.flags |= IW_MICFAILURE_GROUP; + else + ev.flags |= IW_MICFAILURE_PAIRWISE; + + ev.src_addr.sa_family = ARPHRD_ETHER; + memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN); + memset(&wrqu, 0x00, sizeof(wrqu)); + wrqu.data.length = sizeof(ev); + wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE, + &wrqu, (char *)&ev); +} + static int recvframe_chkmic(struct adapter *adapter, struct recv_frame *precvframe) { int i, res = _SUCCESS; @@ -275,7 +386,6 @@ static int recvframe_chkmic(struct adapter *adapter, struct recv_frame *precvfr if (!psecuritypriv) { res = _FAIL; - DBG_88E("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n"); goto exit; } } else { @@ -304,12 +414,9 @@ static int recvframe_chkmic(struct adapter *adapter, struct recv_frame *precvfr if (is_multicast_ether_addr(prxattrib->ra) && prxattrib->key_index != pmlmeinfo->key_index) brpt_micerror = false; - if ((prxattrib->bdecrypted) && (brpt_micerror)) { + if ((prxattrib->bdecrypted) && (brpt_micerror)) rtw_handle_tkip_mic_err(adapter, (u8)is_multicast_ether_addr(prxattrib->ra)); - DBG_88E(" mic error :prxattrib->bdecrypted=%d\n", prxattrib->bdecrypted); - } else { - DBG_88E(" mic error :prxattrib->bdecrypted=%d\n", prxattrib->bdecrypted); - } + res = _FAIL; } else { /* mic checked ok */ @@ -336,11 +443,10 @@ static struct recv_frame *decryptor(struct adapter *padapter, struct recv_frame if (prxattrib->encrypt > 0) { u8 *iv = precv_frame->rx_data + prxattrib->hdrlen; + prxattrib->key_index = (((iv[3]) >> 6) & 0x3); if (prxattrib->key_index > WEP_KEYS) { - DBG_88E("prxattrib->key_index(%d)>WEP_KEYS\n", prxattrib->key_index); - switch (prxattrib->encrypt) { case _WEP40_: case _WEP104_: @@ -463,8 +569,7 @@ static int recv_decache(struct recv_frame *precv_frame, u8 bretry, struct stainf return _SUCCESS; } -void process_pwrbit_data(struct adapter *padapter, struct recv_frame *precv_frame); -void process_pwrbit_data(struct adapter *padapter, struct recv_frame *precv_frame) +static void process_pwrbit_data(struct adapter *padapter, struct recv_frame *precv_frame) { unsigned char pwrbit; u8 *ptr = precv_frame->rx_data; @@ -568,15 +673,9 @@ static void count_rx_stats(struct adapter *padapter, struct recv_frame *prframe, } } -int sta2sta_data_frame( - struct adapter *adapter, - struct recv_frame *precv_frame, - struct sta_info **psta -); - -int sta2sta_data_frame(struct adapter *adapter, struct recv_frame *precv_frame, struct sta_info **psta) +static int sta2sta_data_frame(struct adapter *adapter, + struct recv_frame *precv_frame, struct sta_info **psta) { - u8 *ptr = precv_frame->rx_data; int ret = _SUCCESS; struct rx_pkt_attrib *pattrib = &precv_frame->attrib; struct sta_priv *pstapriv = &adapter->stapriv; @@ -631,12 +730,6 @@ int sta2sta_data_frame(struct adapter *adapter, struct recv_frame *precv_frame, sta_addr = pattrib->src; } } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { - memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN); - memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN); - memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN); - memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); - memcpy(pattrib->ta, pattrib->src, ETH_ALEN); - sta_addr = mybssid; } else { ret = _FAIL; @@ -661,6 +754,7 @@ static int ap2sta_data_frame( struct sta_info **psta) { u8 *ptr = precv_frame->rx_data; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)precv_frame->rx_data; struct rx_pkt_attrib *pattrib = &precv_frame->attrib; int ret = _SUCCESS; struct sta_priv *pstapriv = &adapter->stapriv; @@ -688,10 +782,8 @@ static int ap2sta_data_frame( if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) { - if (!bmcast) { - DBG_88E("issue_deauth to the nonassociated ap=%pM for the reason(7)\n", (pattrib->bssid)); + if (!bmcast) issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); - } ret = _FAIL; goto exit; @@ -707,24 +799,16 @@ static int ap2sta_data_frame( goto exit; } - /* if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) { */ - /* */ - - if (GetFrameSubType(ptr) & BIT(6)) { - /* No data, will not indicate to upper layer, temporily count it here */ + if (ieee80211_is_nullfunc(hdr->frame_control)) { + /* We count the nullfunc frame, but we'll not pass it on to higher layers. */ count_rx_stats(adapter, precv_frame, *psta); ret = RTW_RX_HANDLED; goto exit; } } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) && check_fwstate(pmlmepriv, _FW_LINKED)) { - memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN); memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN); - memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN); - memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); - memcpy(pattrib->ta, pattrib->src, ETH_ALEN); - /* */ memcpy(pattrib->bssid, mybssid, ETH_ALEN); *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */ @@ -739,11 +823,8 @@ static int ap2sta_data_frame( } else { if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) { *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */ - if (!*psta) { - DBG_88E("issue_deauth to the ap =%pM for the reason(7)\n", (pattrib->bssid)); - + if (!*psta) issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); - } } ret = _FAIL; @@ -762,6 +843,7 @@ static int sta2ap_data_frame(struct adapter *adapter, struct sta_priv *pstapriv = &adapter->stapriv; struct mlme_priv *pmlmepriv = &adapter->mlmepriv; u8 *ptr = precv_frame->rx_data; + __le16 fc = *(__le16 *)ptr; unsigned char *mybssid = get_bssid(pmlmepriv); int ret = _SUCCESS; @@ -774,8 +856,6 @@ static int sta2ap_data_frame(struct adapter *adapter, *psta = rtw_get_stainfo(pstapriv, pattrib->src); if (!*psta) { - DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src)); - issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); ret = RTW_RX_HANDLED; @@ -784,9 +864,8 @@ static int sta2ap_data_frame(struct adapter *adapter, process_pwrbit_data(adapter, precv_frame); - if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) { + if (ieee80211_is_data_qos(fc)) process_wmmps_data(adapter, precv_frame); - } if (GetFrameSubType(ptr) & BIT(6)) { /* No data, will not indicate to upper layer, temporily count it here */ @@ -796,11 +875,11 @@ static int sta2ap_data_frame(struct adapter *adapter, } } else { u8 *myhwaddr = myid(&adapter->eeprompriv); + if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) { ret = RTW_RX_HANDLED; goto exit; } - DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src)); issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); ret = RTW_RX_HANDLED; goto exit; @@ -811,148 +890,135 @@ exit: return ret; } -static int validate_recv_ctrl_frame(struct adapter *padapter, - struct recv_frame *precv_frame) +static void validate_recv_ctrl_frame(struct adapter *padapter, + struct recv_frame *precv_frame) { struct rx_pkt_attrib *pattrib = &precv_frame->attrib; struct sta_priv *pstapriv = &padapter->stapriv; - u8 *pframe = precv_frame->rx_data; - /* uint len = precv_frame->len; */ - - if (GetFrameType(pframe) != WIFI_CTRL_TYPE) - return _FAIL; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)precv_frame->rx_data; + struct ieee80211_pspoll *pspoll = (struct ieee80211_pspoll *)hdr; + u8 wmmps_ac; + struct sta_info *psta; /* receive the frames that ra(a1) is my address */ - if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN)) - return _FAIL; + if (memcmp(hdr->addr1, myid(&padapter->eeprompriv), ETH_ALEN)) + return; /* only handle ps-poll */ - if (GetFrameSubType(pframe) == WIFI_PSPOLL) { - u16 aid; - u8 wmmps_ac = 0; - struct sta_info *psta = NULL; + if (!ieee80211_is_pspoll(hdr->frame_control)) + return; - aid = GetAid(pframe); - psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe)); + psta = rtw_get_stainfo(pstapriv, hdr->addr2); + if (!psta || psta->aid != (le16_to_cpu(pspoll->aid) & 0x3FFF)) + return; - if (!psta || psta->aid != aid) - return _FAIL; + /* for rx pkt statistics */ + psta->sta_stats.rx_ctrl_pkts++; - /* for rx pkt statistics */ - psta->sta_stats.rx_ctrl_pkts++; + switch (pattrib->priority) { + case 1: + case 2: + wmmps_ac = psta->uapsd_bk & BIT(0); + break; + case 4: + case 5: + wmmps_ac = psta->uapsd_vi & BIT(0); + break; + case 6: + case 7: + wmmps_ac = psta->uapsd_vo & BIT(0); + break; + case 0: + case 3: + default: + wmmps_ac = psta->uapsd_be & BIT(0); + break; + } - switch (pattrib->priority) { - case 1: - case 2: - wmmps_ac = psta->uapsd_bk & BIT(0); - break; - case 4: - case 5: - wmmps_ac = psta->uapsd_vi & BIT(0); - break; - case 6: - case 7: - wmmps_ac = psta->uapsd_vo & BIT(0); - break; - case 0: - case 3: - default: - wmmps_ac = psta->uapsd_be & BIT(0); - break; - } + if (wmmps_ac) + return; - if (wmmps_ac) - return _FAIL; + if (psta->state & WIFI_STA_ALIVE_CHK_STATE) { + psta->expire_to = pstapriv->expire_to; + psta->state ^= WIFI_STA_ALIVE_CHK_STATE; + } - if (psta->state & WIFI_STA_ALIVE_CHK_STATE) { - DBG_88E("%s alive check-rx ps-poll\n", __func__); - psta->expire_to = pstapriv->expire_to; - psta->state ^= WIFI_STA_ALIVE_CHK_STATE; - } + if ((psta->state & WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap & BIT(psta->aid))) { + struct list_head *xmitframe_plist, *xmitframe_phead; + struct xmit_frame *pxmitframe = NULL; + struct xmit_priv *pxmitpriv = &padapter->xmitpriv; - if ((psta->state & WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap & BIT(psta->aid))) { - struct list_head *xmitframe_plist, *xmitframe_phead; - struct xmit_frame *pxmitframe = NULL; - struct xmit_priv *pxmitpriv = &padapter->xmitpriv; + spin_lock_bh(&pxmitpriv->lock); - spin_lock_bh(&pxmitpriv->lock); + xmitframe_phead = get_list_head(&psta->sleep_q); + xmitframe_plist = xmitframe_phead->next; - xmitframe_phead = get_list_head(&psta->sleep_q); - xmitframe_plist = xmitframe_phead->next; + if (xmitframe_phead != xmitframe_plist) { + pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list); - if (xmitframe_phead != xmitframe_plist) { - pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list); + xmitframe_plist = xmitframe_plist->next; - xmitframe_plist = xmitframe_plist->next; + list_del_init(&pxmitframe->list); - list_del_init(&pxmitframe->list); + psta->sleepq_len--; - psta->sleepq_len--; + if (psta->sleepq_len > 0) + pxmitframe->attrib.mdata = 1; + else + pxmitframe->attrib.mdata = 0; - if (psta->sleepq_len > 0) - pxmitframe->attrib.mdata = 1; - else - pxmitframe->attrib.mdata = 0; + pxmitframe->attrib.triggered = 1; - pxmitframe->attrib.triggered = 1; + if (psta->sleepq_len == 0) { + pstapriv->tim_bitmap &= ~BIT(psta->aid); - if (psta->sleepq_len == 0) { - pstapriv->tim_bitmap &= ~BIT(psta->aid); + /* upate BCN for TIM IE */ + /* update_BCNTIM(padapter); */ + update_beacon(padapter, _TIM_IE_, NULL, false); + } + } else { + if (pstapriv->tim_bitmap & BIT(psta->aid)) { + if (psta->sleepq_len == 0) + /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */ + issue_nulldata(padapter, psta->hwaddr, 0, 0, 0); + else + psta->sleepq_len = 0; - /* upate BCN for TIM IE */ - /* update_BCNTIM(padapter); */ - update_beacon(padapter, _TIM_IE_, NULL, false); - } - } else { - if (pstapriv->tim_bitmap & BIT(psta->aid)) { - if (psta->sleepq_len == 0) { - DBG_88E("no buffered packets to xmit\n"); - - /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */ - issue_nulldata(padapter, psta->hwaddr, 0, 0, 0); - } else { - DBG_88E("error!psta->sleepq_len=%d\n", psta->sleepq_len); - psta->sleepq_len = 0; - } - - pstapriv->tim_bitmap &= ~BIT(psta->aid); - - /* upate BCN for TIM IE */ - /* update_BCNTIM(padapter); */ - update_beacon(padapter, _TIM_IE_, NULL, false); - } + pstapriv->tim_bitmap &= ~BIT(psta->aid); + + /* upate BCN for TIM IE */ + /* update_BCNTIM(padapter); */ + update_beacon(padapter, _TIM_IE_, NULL, false); } - spin_unlock_bh(&pxmitpriv->lock); } + spin_unlock_bh(&pxmitpriv->lock); } - - return _FAIL; } struct recv_frame *recvframe_chk_defrag(struct adapter *padapter, struct recv_frame *precv_frame); -static int validate_recv_mgnt_frame(struct adapter *padapter, - struct recv_frame *precv_frame) +static void validate_recv_mgnt_frame(struct adapter *padapter, + struct recv_frame *precv_frame) { struct sta_info *psta; + struct ieee80211_hdr *hdr; precv_frame = recvframe_chk_defrag(padapter, precv_frame); if (!precv_frame) - return _SUCCESS; + return; - /* for rx pkt statistics */ - psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->rx_data)); + hdr = (struct ieee80211_hdr *)precv_frame->rx_data; + psta = rtw_get_stainfo(&padapter->stapriv, hdr->addr2); if (psta) { psta->sta_stats.rx_mgnt_pkts++; - if (GetFrameSubType(precv_frame->rx_data) == WIFI_BEACON) { + if (ieee80211_is_beacon(hdr->frame_control)) psta->sta_stats.rx_beacon_pkts++; - } else if (GetFrameSubType(precv_frame->rx_data) == WIFI_PROBEREQ) { + else if (ieee80211_is_probe_req(hdr->frame_control)) psta->sta_stats.rx_probereq_pkts++; - } else if (GetFrameSubType(precv_frame->rx_data) == WIFI_PROBERSP) { - if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->rx_data), ETH_ALEN)) + else if (ieee80211_is_probe_resp(hdr->frame_control)) { + if (!memcmp(padapter->eeprompriv.mac_addr, hdr->addr1, ETH_ALEN)) psta->sta_stats.rx_probersp_pkts++; - else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->rx_data)) || - is_multicast_mac_addr(GetAddr1Ptr(precv_frame->rx_data))) + else if (is_broadcast_mac_addr(hdr->addr1) || is_multicast_mac_addr(hdr->addr1)) psta->sta_stats.rx_probersp_bm_pkts++; else psta->sta_stats.rx_probersp_uo_pkts++; @@ -960,72 +1026,44 @@ static int validate_recv_mgnt_frame(struct adapter *padapter, } mgt_dispatcher(padapter, precv_frame); - - return _SUCCESS; } static int validate_recv_data_frame(struct adapter *adapter, struct recv_frame *precv_frame) { - u8 bretry; - u8 *psa, *pda, *pbssid; struct sta_info *psta = NULL; u8 *ptr = precv_frame->rx_data; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)precv_frame->rx_data; struct rx_pkt_attrib *pattrib = &precv_frame->attrib; struct security_priv *psecuritypriv = &adapter->securitypriv; - int ret = _SUCCESS; - - bretry = GetRetry(ptr); - pda = get_da(ptr); - psa = get_sa(ptr); - pbssid = get_hdr_bssid(ptr); + int ret; - if (!pbssid) { - ret = _FAIL; - goto exit; - } + memcpy(pattrib->dst, ieee80211_get_DA(hdr), ETH_ALEN); + memcpy(pattrib->src, ieee80211_get_SA(hdr), ETH_ALEN); - memcpy(pattrib->dst, pda, ETH_ALEN); - memcpy(pattrib->src, psa, ETH_ALEN); + /* address4 is used only if both to_ds and from_ds are set */ + if (ieee80211_has_a4(hdr->frame_control)) + return _FAIL; - memcpy(pattrib->bssid, pbssid, ETH_ALEN); + memcpy(pattrib->ra, hdr->addr1, ETH_ALEN); + memcpy(pattrib->ta, hdr->addr2, ETH_ALEN); - switch (pattrib->to_fr_ds) { - case 0: - memcpy(pattrib->ra, pda, ETH_ALEN); - memcpy(pattrib->ta, psa, ETH_ALEN); - ret = sta2sta_data_frame(adapter, precv_frame, &psta); - break; - case 1: - memcpy(pattrib->ra, pda, ETH_ALEN); - memcpy(pattrib->ta, pbssid, ETH_ALEN); + if (ieee80211_has_fromds(hdr->frame_control)) { + memcpy(pattrib->bssid, hdr->addr2, ETH_ALEN); ret = ap2sta_data_frame(adapter, precv_frame, &psta); - break; - case 2: - memcpy(pattrib->ra, pbssid, ETH_ALEN); - memcpy(pattrib->ta, psa, ETH_ALEN); + } else if (ieee80211_has_tods(hdr->frame_control)) { + memcpy(pattrib->bssid, hdr->addr1, ETH_ALEN); ret = sta2ap_data_frame(adapter, precv_frame, &psta); - break; - case 3: - memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN); - memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN); - ret = _FAIL; - break; - default: - ret = _FAIL; - break; + } else { + memcpy(pattrib->bssid, hdr->addr3, ETH_ALEN); + ret = sta2sta_data_frame(adapter, precv_frame, &psta); } - if (ret == _FAIL) { - goto exit; - } else if (ret == RTW_RX_HANDLED) { - goto exit; - } + if (ret == _FAIL || ret == RTW_RX_HANDLED) + return ret; - if (!psta) { - ret = _FAIL; - goto exit; - } + if (!psta) + return _FAIL; /* psta->rssi = prxcmd->rssi; */ /* psta->signal_quality = prxcmd->sq; */ @@ -1034,17 +1072,17 @@ static int validate_recv_data_frame(struct adapter *adapter, pattrib->amsdu = 0; pattrib->ack_policy = 0; /* parsing QC field */ - if (pattrib->qos == 1) { - pattrib->priority = GetPriority((ptr + 24)); + if (pattrib->qos) { + pattrib->priority = ieee80211_get_tid(hdr); pattrib->ack_policy = GetAckpolicy((ptr + 24)); pattrib->amsdu = GetAMsdu((ptr + 24)); - pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26; + pattrib->hdrlen = 26; if (pattrib->priority != 0 && pattrib->priority != 3) adapter->recvpriv.bIsAnyNonBEPkts = true; } else { pattrib->priority = 0; - pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24; + pattrib->hdrlen = 24; } if (pattrib->order)/* HT-CTRL 11n */ @@ -1053,10 +1091,9 @@ static int validate_recv_data_frame(struct adapter *adapter, precv_frame->preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority]; /* decache, drop duplicate recv packets */ - if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) { - ret = _FAIL; - goto exit; - } + if (recv_decache(precv_frame, ieee80211_has_retry(hdr->frame_control), + &psta->sta_recvpriv.rxcache) == _FAIL) + return _FAIL; if (pattrib->privacy) { GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, is_multicast_ether_addr(pattrib->ra)); @@ -1068,9 +1105,7 @@ static int validate_recv_data_frame(struct adapter *adapter, pattrib->icv_len = 0; } -exit: - - return ret; + return _SUCCESS; } static int validate_recv_frame(struct adapter *adapter, struct recv_frame *precv_frame) @@ -1079,97 +1114,46 @@ static int validate_recv_frame(struct adapter *adapter, struct recv_frame *precv /* then call check if rx seq/frag. duplicated. */ - u8 type; - u8 subtype; - int retval = _SUCCESS; - u8 bDumpRxPkt; + int retval = _FAIL; struct rx_pkt_attrib *pattrib = &precv_frame->attrib; - u8 *ptr = precv_frame->rx_data; - u8 ver = (unsigned char)(*ptr) & 0x3; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)precv_frame->rx_data; struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv; if (pmlmeext->sitesurvey_res.state == SCAN_PROCESS) { int ch_set_idx = rtw_ch_set_search_ch(pmlmeext->channel_set, rtw_get_oper_ch(adapter)); + if (ch_set_idx >= 0) pmlmeext->channel_set[ch_set_idx].rx_count++; } - /* add version chk */ - if (ver != 0) { - retval = _FAIL; - goto exit; - } - - type = GetFrameType(ptr); - subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */ - - pattrib->to_fr_ds = get_tofr_ds(ptr); + if ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_VERS)) != 0) + return _FAIL; - pattrib->frag_num = GetFragNum(ptr); - pattrib->seq_num = GetSequence(ptr); + pattrib->frag_num = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; + pattrib->seq_num = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); - pattrib->pw_save = GetPwrMgt(ptr); - pattrib->mfrag = GetMFrag(ptr); - pattrib->mdata = GetMData(ptr); - pattrib->privacy = GetPrivacy(ptr); - pattrib->order = GetOrder(ptr); + pattrib->pw_save = ieee80211_has_pm(hdr->frame_control); + pattrib->mfrag = ieee80211_has_morefrags(hdr->frame_control); + pattrib->mdata = ieee80211_has_moredata(hdr->frame_control); + pattrib->privacy = ieee80211_has_protected(hdr->frame_control); + pattrib->order = ieee80211_has_order(hdr->frame_control); - /* Dump rx packets */ - GetHalDefVar8188EUsb(adapter, HAL_DEF_DBG_DUMP_RXPKT, &bDumpRxPkt); - if (bDumpRxPkt == 1) {/* dump all rx packets */ - int i; - DBG_88E("#############################\n"); - - for (i = 0; i < 64; i = i + 8) - DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr + i), - *(ptr + i + 1), *(ptr + i + 2), *(ptr + i + 3), *(ptr + i + 4), *(ptr + i + 5), *(ptr + i + 6), *(ptr + i + 7)); - DBG_88E("#############################\n"); - } else if (bDumpRxPkt == 2) { - if (type == WIFI_MGT_TYPE) { - int i; - DBG_88E("#############################\n"); - - for (i = 0; i < 64; i = i + 8) - DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr + i), - *(ptr + i + 1), *(ptr + i + 2), *(ptr + i + 3), *(ptr + i + 4), *(ptr + i + 5), *(ptr + i + 6), *(ptr + i + 7)); - DBG_88E("#############################\n"); - } - } else if (bDumpRxPkt == 3) { - if (type == WIFI_DATA_TYPE) { - int i; - DBG_88E("#############################\n"); - - for (i = 0; i < 64; i = i + 8) - DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr + i), - *(ptr + i + 1), *(ptr + i + 2), *(ptr + i + 3), *(ptr + i + 4), *(ptr + i + 5), *(ptr + i + 6), *(ptr + i + 7)); - DBG_88E("#############################\n"); - } - } - switch (type) { - case WIFI_MGT_TYPE: /* mgnt */ + /* We return _SUCCESS only for data frames. */ + if (ieee80211_is_mgmt(hdr->frame_control)) validate_recv_mgnt_frame(adapter, precv_frame); - retval = _FAIL; /* only data frame return _SUCCESS */ - break; - case WIFI_CTRL_TYPE: /* ctrl */ + else if (ieee80211_is_ctl(hdr->frame_control)) validate_recv_ctrl_frame(adapter, precv_frame); - retval = _FAIL; /* only data frame return _SUCCESS */ - break; - case WIFI_DATA_TYPE: /* data */ + else if (ieee80211_is_data(hdr->frame_control)) { rtw_led_control(adapter, LED_CTL_RX); - pattrib->qos = (subtype & BIT(7)) ? 1 : 0; + pattrib->qos = ieee80211_is_data_qos(hdr->frame_control); retval = validate_recv_data_frame(adapter, precv_frame); if (retval == _FAIL) { struct recv_priv *precvpriv = &adapter->recvpriv; + precvpriv->rx_drop++; } - break; - default: - retval = _FAIL; - break; } -exit: - return retval; } @@ -1188,7 +1172,7 @@ static int wlanhdr_to_ethhdr(struct recv_frame *precvframe) struct adapter *adapter = precvframe->adapter; struct mlme_priv *pmlmepriv = &adapter->mlmepriv; - u8 *ptr = get_recvframe_data(precvframe); /* point to frame_ctrl field */ + u8 *ptr = precvframe->rx_data; /* point to frame_ctrl field */ struct rx_pkt_attrib *pattrib = &precvframe->attrib; if (pattrib->encrypt) @@ -1223,10 +1207,14 @@ static int wlanhdr_to_ethhdr(struct recv_frame *precvframe) eth_type = 0x8712; /* append rx status for mp test packets */ ptr = recvframe_pull(precvframe, (rmv_len - sizeof(struct ethhdr) + 2) - 24); + if (!ptr) + return _FAIL; memcpy(ptr, get_rxmem(precvframe), 24); ptr += 24; } else { ptr = recvframe_pull(precvframe, (rmv_len - sizeof(struct ethhdr) + (bsnaphdr ? 2 : 0))); + if (!ptr) + return _FAIL; } memcpy(ptr, pattrib->dst, ETH_ALEN); @@ -1345,8 +1333,9 @@ struct recv_frame *recvframe_chk_defrag(struct adapter *padapter, struct recv_fr psta_addr = pfhdr->attrib.ta; psta = rtw_get_stainfo(pstapriv, psta_addr); if (!psta) { - u8 type = GetFrameType(pfhdr->rx_data); - if (type != WIFI_DATA_TYPE) { + __le16 fc = *(__le16 *)pfhdr->rx_data; + + if (ieee80211_is_data(fc)) { psta = rtw_get_bcmc_stainfo(padapter); pdefrag_q = &psta->sta_recvpriv.defrag_q; } else { @@ -1422,11 +1411,12 @@ static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe) u8 nr_subframes, i; unsigned char *pdata; struct rx_pkt_attrib *pattrib; - unsigned char *data_ptr; struct sk_buff *sub_skb, *subframes[MAX_SUBFRAME_COUNT]; + struct recv_priv *precvpriv = &padapter->recvpriv; struct __queue *pfree_recv_queue = &precvpriv->free_recv_queue; int ret = _SUCCESS; + nr_subframes = 0; pattrib = &prframe->attrib; @@ -1444,10 +1434,8 @@ static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe) /* Offset 12 denote 2 mac address */ nSubframe_Length = RTW_GET_BE16(pdata + 12); - if (a_len < ETH_HLEN + nSubframe_Length) { - DBG_88E("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length); + if (a_len < ETH_HLEN + nSubframe_Length) goto exit; - } /* move the data point to data content */ pdata += ETH_HLEN; @@ -1457,8 +1445,7 @@ static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe) sub_skb = dev_alloc_skb(nSubframe_Length + 12); if (sub_skb) { skb_reserve(sub_skb, 12); - data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length); - memcpy(data_ptr, pdata, nSubframe_Length); + skb_put_data(sub_skb, pdata, nSubframe_Length); } else { sub_skb = skb_clone(prframe->pkt, GFP_ATOMIC); if (sub_skb) { @@ -1466,29 +1453,25 @@ static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe) sub_skb->len = nSubframe_Length; skb_set_tail_pointer(sub_skb, nSubframe_Length); } else { - DBG_88E("skb_clone() Fail!!! , nr_subframes=%d\n", nr_subframes); break; } } subframes[nr_subframes++] = sub_skb; - if (nr_subframes >= MAX_SUBFRAME_COUNT) { - DBG_88E("ParseSubframe(): Too many Subframes! Packets dropped!\n"); + if (nr_subframes >= MAX_SUBFRAME_COUNT) break; - } pdata += nSubframe_Length; a_len -= nSubframe_Length; if (a_len != 0) { padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4 - 1)); - if (padding_len == 4) { + if (padding_len == 4) padding_len = 0; - } - if (a_len < padding_len) { + if (a_len < padding_len) goto exit; - } + pdata += padding_len; a_len -= padding_len; } @@ -1533,7 +1516,7 @@ exit: return ret; } -static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num) +static bool check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num) { u8 wsize = preorder_ctrl->wsize_b; u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */ @@ -1563,8 +1546,7 @@ static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_n return true; } -int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, struct recv_frame *prframe); -int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, struct recv_frame *prframe) +static bool enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, struct recv_frame *prframe) { struct rx_pkt_attrib *pattrib = &prframe->attrib; struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; @@ -1593,7 +1575,86 @@ int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, struct re return true; } -static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced) +static int rtw_recv_indicatepkt(struct adapter *padapter, struct recv_frame *precv_frame) +{ + struct recv_priv *precvpriv; + struct __queue *pfree_recv_queue; + struct sk_buff *skb; + struct mlme_priv *pmlmepriv = &padapter->mlmepriv; + + precvpriv = &padapter->recvpriv; + pfree_recv_queue = &precvpriv->free_recv_queue; + + skb = precv_frame->pkt; + if (!skb) + goto _recv_indicatepkt_drop; + + skb->data = precv_frame->rx_data; + + skb_set_tail_pointer(skb, precv_frame->len); + + skb->len = precv_frame->len; + + if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { + struct sk_buff *pskb2 = NULL; + struct sta_info *psta = NULL; + struct sta_priv *pstapriv = &padapter->stapriv; + struct rx_pkt_attrib *pattrib = &precv_frame->attrib; + bool bmcast = is_multicast_ether_addr(pattrib->dst); + + if (memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)) { + if (bmcast) { + psta = rtw_get_bcmc_stainfo(padapter); + pskb2 = skb_clone(skb, GFP_ATOMIC); + } else { + psta = rtw_get_stainfo(pstapriv, pattrib->dst); + } + + if (psta) { + struct net_device *pnetdev; + + pnetdev = (struct net_device *)padapter->pnetdev; + skb->dev = pnetdev; + skb_set_queue_mapping(skb, rtw_recv_select_queue(skb)); + + rtw_xmit_entry(skb, pnetdev); + + if (bmcast) + skb = pskb2; + else + goto _recv_indicatepkt_end; + } + } + } + + rcu_read_lock(); + rcu_dereference(padapter->pnetdev->rx_handler_data); + rcu_read_unlock(); + + skb->ip_summed = CHECKSUM_NONE; + skb->dev = padapter->pnetdev; + skb->protocol = eth_type_trans(skb, padapter->pnetdev); + + netif_rx(skb); + +_recv_indicatepkt_end: + + /* pointers to NULL before rtw_free_recvframe() */ + precv_frame->pkt = NULL; + + rtw_free_recvframe(precv_frame, pfree_recv_queue); + + return _SUCCESS; + +_recv_indicatepkt_drop: + + /* enqueue back to free_recv_queue */ + rtw_free_recvframe(precv_frame, pfree_recv_queue); + + return _FAIL; +} + +static bool recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced) { struct list_head *phead, *plist; struct recv_frame *prframe; @@ -1663,7 +1724,7 @@ static int recv_indicatepkt_reorder(struct adapter *padapter, struct recv_frame /* s1. */ wlanhdr_to_ethhdr(prframe); - if (pattrib->qos != 1) { + if (!pattrib->qos) { if (!padapter->bDriverStopped && !padapter->bSurpriseRemoved) { rtw_recv_indicatepkt(padapter, prframe); @@ -1790,12 +1851,9 @@ static int recv_func_prehandle(struct adapter *padapter, struct recv_frame *rfra /* check the frame crtl field and decache */ ret = validate_recv_frame(padapter, rframe); - if (ret != _SUCCESS) { + if (ret != _SUCCESS) rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */ - goto exit; - } -exit: return ret; } @@ -1851,13 +1909,9 @@ static int recv_func(struct adapter *padapter, struct recv_frame *rframe) if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) { struct recv_frame *pending_frame; - int cnt = 0; - pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue); - while (pending_frame) { - cnt++; + while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) recv_func_posthandle(padapter, pending_frame); - } } ret = recv_func_prehandle(padapter, rframe); @@ -1870,11 +1924,12 @@ static int recv_func(struct adapter *padapter, struct recv_frame *rframe) psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK && !psecuritypriv->busetkipkey) { rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue); - DBG_88E("%s: no key, enqueue uc_swdec_pending_queue\n", __func__); if (recvpriv->free_recvframe_cnt < NR_RECVFRAME / 4) { - /* to prevent from recvframe starvation, + /* + * to prevent from recvframe starvation, * get recvframe from uc_swdec_pending_queue to - * free_recvframe_cnt */ + * free_recvframe_cnt + */ rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue); if (rframe) goto do_posthandle; @@ -1912,7 +1967,7 @@ _recv_entry_drop: return ret; } -void rtw_signal_stat_timer_hdl(struct timer_list *t) +static void rtw_signal_stat_timer_hdl(struct timer_list *t) { struct adapter *adapter = from_timer(adapter, t, recvpriv.signal_stat_timer); struct recv_priv *recvpriv = &adapter->recvpriv; |